Patent Application
20160129404
The invention relates to the field of diffusing an encapsulated product into a stream of water and more particularly into washing water such as bath water, shower water or the like.
WO 2011107221 discloses a device for diffusing a product of the shower gel, shampoo, essential oil or other type, packaged in the form of disposable capsules which are punctured as the casing intended to accept the capsule is closed. This casing comprises a hatch or a stopper that can be unscrewed in order to allow it to be opened and then a capsule inserted, the housing then being closed again. A pump or a suction system is used to expel the product contained in the capsule and mix it into a stream of water passing through the device. An adjusting plate that can be controlled by a lever is used to regulate the quantity of product expelled from the capsule. Also, U.S. Pat. No. 3,349,788 discloses a fluid mixer comprising a valve.
An idea underlying the invention is that of allowing a user to mix an encapsulated product into a stream of water using a device of little bulk. One object of the invention is also to provide a device that allows simple use in which the user has only a limited number of handling operations to perform in order to bring the product contained in a capsule into contact with a stream of water passing through the device.
In order to achieve that, the invention provides a diffusion device intended to accept a peripherally flanged capsule containing a product that is to be diffused into a stream of water, the device comprising:
Such a device allows for a space saving on installation, installation not requiring the provision of the space required for manipulating a hatch for opening the housing, the capsule being inserted via an opening of the housing and a simple turn of the knob being enough to close the device. In addition, the opening of the housing allows the capsule to be inserted simply and quickly into the housing.
In one particular embodiment, the device comprises:
According to this embodiment, such a device for diffusing an encapsulated product into a stream of water may have one or more of the following additional features.
In this preferred embodiment, the bearing surface is situated on an upper face of the body, the knob being mounted with the capacity for helicoidal rotation on the body.
In an alternative form of embodiment, a piston is mounted with the ability to move translationally in the body, the bearing surface being situated on a periphery of an upper face of the piston, the knob being mounted with the capacity for helicoidal rotation with the piston, the product return passage passing through the piston, a closure movement of the knob being able to move the piston translationally in the body in order to bring the lower face of the rim and the bearing surface closer together.
The device according to this embodiment advantageously allows the knob, in a simple movement that consists in effecting a rotation, for example of the order of 180°, to trap the flange of the capsule in the groove of the housing in a sealed manner between the bearing surface on the one hand and, on the other hand, the lower face of the upper part of the knob and the lower face of the shoulder of the backing ring. This sealing may be obtained for example through the presence of sealing beads on the flange of the capsule or alternatively the presence of a seal arranged on the upper face of the cylindrical body and having a bearing surface on its upper face.
For preference, the lower face of the rim develops over 360° about the axis of rotation of the knob, the bearing surface develops over 360° about the axis of rotation of the knob, the closure movement of the knob being able to bring the lower face of the rim to face the bearing surface over 360° so as to allow the flange of the capsule to be inserted in a sealed manner between said rim and the bearing surface over 360° when the device is in the closed position.
This embodiment ensures that, in use, the flange of the capsule is pressed by the lower face of the rim over the entirety of the peripheral flange of the capsule, making it possible to obtain a perfect seal in the housing of the device.
In one embodiment, the rim delimits with the bearing surface a peripheral groove of the housing which groove is open toward the inside of the housing and intended to accept the flange of the capsule, the opening of the housing when the device is in the open position being delimited by a portion of the bearing surface that does not face the lower face of the rim. The opening of the housing is preferably lateral but may equally be on an upper face of the knob. Such a lateral opening limits the amount of space needed to insert the capsule into the housing. The presence of the groove in such a lateral opening advantageously provides guidance for the capsule while it is being inserted. Furthermore, such a lateral opening allows stable insertion into the device whatever the positioning of the device in space if the opening is not oriented downward. Thus, if the device is installed on a downward facing surface such as the ceiling of a shower or the like, the user simply inserts the capsule via the lateral opening and closes the device without having to hold the capsule in position while closing the device.
In one embodiment, a backing ring is mounted such that it is translationally mobile in the body, said backing ring comprising a shoulder projecting in the axial direction of the body beyond the bearing surface, the rim of the device comprising a lower face of the shoulder, the backing ring being coupled to the knob so as to be driven by the knob in the closure movement so as to bring the lower face of the shoulder of the backing ring and the bearing surface closer together in order by compression to keep a portion of the flange of the capsule between the bearing surface and the lower face of the shoulder in a sealed manner.
One embodiment makes provision for the backing ring to comprise a skirt of a shape that complements a trench in the body, the skirt of the backing ring being inserted into the trench, a face of the skirt having axially extending ribs, the trench comprising axially extending grooves that complement the ribs of the skirt so as to guide the movement of the backing ring with respect to the body in an axial movement. Such a skirt makes it possible to limit the movement of the backing ring with respect to the body to a translational movement but this limitation of the movement may be obtained by any means known to those skilled in the art.
In one embodiment, the rim of the device comprises a lower face of the upper part of the knob, the lower face of the upper part of the knob constituting a first portion of the rim of the device, the lower face of the shoulder of the backing ring constituting a second portion of the rim of the device, the closure movement of the knob being able to bring the first portion of the rim to face a second portion of the bearing surface while at the same time bringing said first portion of the rim and said second portion of the bearing surface closer together and being able to bring the second portion of the rim to face a first portion of the bearing surface while at the same time bringing said second portion of the rim and the second portion of the bearing surface closer together so as to trap the flange of a flanged capsule between, on the one hand, the first portion of the bearing surface and the second portion of the rim and, on the other hand, the second portion of the bearing surface and the first portion of the rim.
The rim here is produced in two portions which together form a lower face intended to collaborate with the bearing surface, but other modes of embodiment are possible, for example with the rim being formed by a diaphragm such as those used in photographic equipment, the diaphragm in a retracted position having no face facing the bearing surface and, as it deploys, bringing the lower face of said diaphragm to face the bearing surface in order to form the peripheral groove.
In one embodiment, the first portion of the rim and the second portion of the rim are in distinct planes. Typically, the first portion of the rim and the second portion of the rim constitute a step in the groove of the housing which will guide the capsule as it is being inserted into the housing, said capsule also comprising a step that complements the step in the groove of the housing.
In one embodiment, the first portion of the rim has the shape of an arc of a circle with a first radius and the second portion of the rim has the shape of an arc of a circle with a second radius greater than the first radius and concentric with the first portion of the rim, when the device is in the open position, the shoulder of the backing ring being housed at least partially in a groove in the upper part of the knob.
In one embodiment, the first portion of the rim faces the bearing surface over half or more of the periphery of the bearing surface and the second portion of the rim faces the bearing surface over half or more of the periphery of the bearing surface.
Advantageously, the first portion and the second portion of the rim each develop over more than 180°, thus creating a region of overlap. The presence of a region of overlap in which, when the device is in the closed position, the flange is trapped by the bearing surface on the one hand and, on the other hand, by both the first portion of the rim and the second portion of the rim, completely guarantees the sealing of the housing. Advantageously, a first portion of the rim and a second portion of the rim each extend over, for example, 190° of the periphery of the device.
In one embodiment, the device comprises a water supply passage supplying water from a water inlet as far as the capsule housing. Such a water supply passage allows the housing to be supplied with water and offers better circulation of the product that is to be diluted in the stream of water. However, the expulsion of the product from the housing via the outlet passage may be obtained in a different way, for example using a Venturi effect. In the case of a device comprising an expulsion of the product using a Venturi effect, an element is preferably provided for letting air or water into the housing to ensure proper emptying of the capsule.
In an alternative form of this embodiment, the outlet passage and/or the water-supply passage pass through the body as far as the lower surface of the housing.
In one embodiment, the device comprises a water supply control element able to close off or uncover the water supply passage and/or the outlet passage, the control element being able to move in the device from a closed position in which the water return control element closes off the water supplying passage and/or the outlet passage as far as an open position in which the water supplying passage and/or the outlet passage is uncovered, the device comprising a return element applying a return force to the control element, said return force being able to keep the control element in the closed position when there is no opposing force applied to said control element, the device comprising a plate placed on an upper face of the body in the central region of the housing which region is surrounded by the bearing surface and able to move in the axial direction, the plate being coupled to the control element and being able to apply a thrust force to the control element, said thrust force causing the control element to move into the open position.
In one embodiment, the device comprises a puncturing mechanism intended to degrade a wall of a capsule inserted into the housing so as to create a communication between the inside of the capsule containing the product and the outside of the capsule.
In one embodiment, the puncturing mechanism comprises two puncturing pins borne by the body in such a way as to project in the axial direction in a central region of the housing which region is surrounded by the bearing surface, the device comprising a plate arranged in the central region of the housing which region is surrounded by the bearing surface and able to move in the axial direction between a deployed position in which the plate masks the pins and a retracted position in which the plate uncovers the puncturing pins. In an alternative form, the outlet passage comprises an inlet situated on an upper face of one of the pins of the puncturing mechanism.
In one embodiment, the body comprises on its upper face a cover of a shape that complements the plate, the pins being situated on the upper face of the body in the cover, a movement of the plate from its deployed position into its retracted position causing the water return control element to move into the open position.
Advantageously, the water supply control element is mechanically connected to the movement of the knob, said control element being in its closed position when the device is in an open position and passing to an open position upon a closure movement of the device when a capsule is inserted into the device. This mechanical connection between the rotation of the knob and the water supply control element makes use of the device simple, a user not having any additional operation to perform in order to open or close the water supply control element. This automation of the opening of the water supply control element also avoids leaks of water from the housing in the event of user oversight, there being no risk of the user opening the housing in order to insert a capsule therein when the water supply control element is open and the housing is being supplied with water.
The presence of the puncturing pins as above, associated with capsules of which one wall is made of a puncturable material that is intended to be punctured by the puncturing mechanism, allows the product contained in the capsule to be removed therefrom without the user having to open said capsule. Typically, the user inserts a capsule directly into the housing without having to worry about removing a film that seals the capsule or conditioning the capsule so that the product it contains can be brought into contact with the water flowing through the housing. The automation of the puncturing of the capsule avoids a user having to perform an additional operation such as pushing a pushbutton intended to deploy the pins into the housing so as to puncture the capsule. Furthermore, if the automating of the puncturing is connected with the opening of the supply of water to the housing (in a way that may or may not be automated), this automation of the puncturing guarantees that a capsule is punctured only when the control element is open and water is circulating through the housing so as to dissolve or remove the product contained in the capsule. Thus, a capsule that has been inserted into the housing without the device being closed is not punctured and can therefore be used later or, on the other hand, removed from the device without the product it contains becoming unusable.
In one embodiment, the body is mounted on a hollow mount comprising an inlet, an outlet and a passage for the stream of water between the inlet and the outlet of the mount. In a refinement, the outlet of the outlet passage is situated in a downstream part of the water passage of the mount and faces toward the outlet of the mount so as to create a reduced pressure at the outlet of the outlet passage.
For preference, the inlet of the water supply passage is situated in an upstream part of the water passage of the mount and oriented toward the inlet of the mount so as to divert a secondary stream of the stream of water. The location and orientation of the inlet of the water supply passage and of the outlet of the outlet passage respectively with respect to the inlet of the passage for the stream and the outlet of the passage for the stream ensures that the housing is correctly supplied with water and that the product to be diffused in the stream passing through the passage is diffused correctly.
In one embodiment, the housing comprises an opening at the center of the knob intended to allow a sealed body of the capsule to protrude beyond an upper face of the device.
This embodiment allows an exterior face of the sealed capsule to be left visible to a user without the need to open the housing. Thus, a user can, without manipulating the device, determine whether or not the housing thereof contains a capsule. Moreover, if the exterior face of the capsule bears information such as the nature of the product contained in the capsule or the like, this information is visible to the user without the user having to manipulate the device. In addition, ejecting the capsule once the capsule has been used becomes simpler and a user can press against the exterior surface of the capsule in order to take it out of the device. Furthermore, in this embodiment, if the capsule bears product level indications, for example if the capsule is translucent or has a translucent wall section that acts as a product level indicator, the user can see whether the capsule still contains active products or whether the capsule is spent without having to open the housing.
In one embodiment, the device further comprises a valve comprising the bearing surface and mounted with the capacity for axial translational movement in the body, the valve having the capacity for helicoidal rotational movement with respect to the knob.
In one particular embodiment, the body comprises a shoulder projecting in the axial direction of the body beyond the bearing surface, the rim of the device comprising a lower face of the shoulder, the valve being coupled to the knob to be driven in axial translation by the knob during the closure movement so as to bring the bearing surface and the lower face of the shoulder closer together so as by compression to hold a portion of the flange of the capsule between the bearing surface and the lower face of the shoulder in a sealed manner.
In one embodiment, the rim of the device comprises a lower face of the upper part of the knob, the lower face of the upper part of the knob constituting a first portion of the rim of the device, the lower face of the shoulder constituting a second portion of the rim of the device, the closure movement of the knob being able to bring the first portion of the rim to face a second portion of the bearing surface while at the same time bringing said second portion of the bearing surface and said first portion of the rim closer together and being able to bring the second portion of the rim to face a first portion of the bearing surface while at the same time bringing the first portion of the bearing surface and said second portion of the rim closer together so as to trap the flange of a capsule between, on the one hand, the first portion of the bearing surface and the second portion of the rim and, on the other hand, the second portion of the bearing surface and the first portion of the rim.
In one embodiment, the first portion of the rim faces the bearing surface over half or more of the periphery of the bearing surface and the second portion of the rim faces the bearing surface over half or more of the periphery of the bearing surface.
In one embodiment, the device further comprises a water supply passage supplying water from a water inlet as far as the capsule housing, and the outlet passage and the water supplying passage pass through the valve as far as the lower surface of the housing.
In one embodiment, the valve comprises a water supply control element surrounded in a sealed manner by a first seal borne by the body and by a second seal borne by the body, the first and second seals being spaced apart from one another in the axial direction of translational movement of the valve, the valve being able to move in the body, from a closed position in which the water inlet of the second passage and the outlet of the first passage are situated axially in line with the first seal so as to be closed off by the first seal as far as an open position in which the water inlet and the water outlet of the passage are situated in axial projection between the two seals and the water inlet and water outlet of the passage are uncovered.
In one embodiment, the device comprises a puncturing mechanism intended to degrade a wall of a capsule inserted into the housing so as to create a communication between the inside of the capsule containing the product and the outside of the capsule and in which the puncturing mechanism comprises two pins which are situated on an upper face of the valve so as to project in the axial direction in a central region of the housing which region is surrounded by the bearing surface when the knob is in the closed position, the device comprising a plate bearing the bearing surface and able to move in the axial direction with respect to the valve between a deployed position in which the plate masks the pins and a retracted position in which the plate uncovers the puncturing pins.
The invention also relates to a water distribution system comprising a water inlet connected to a diffusion head further comprising a device according to the invention installed in said diffusion head. For example, the device according to the invention may be installed in a shower head, the opening of the housing being situated on the part of the shower head opposite the the diffusion rows.
In one embodiment, the body comprises a hollow mount comprising an inlet, an outlet and a passage for the stream of water between the inlet and the outlet of the mount, the outlet of the outlet passage being situated in a downstream part of the water passage of the mount and oriented toward the outlet of the mount so as to create a reduced pressure at the outlet of the outlet passage.
The invention will be better understood, and further objects, details, features and advantages thereof will become more clearly apparent during the course of the following description of a number of preferred embodiments of the invention which are given solely by way of nonlimiting example with reference to the attached drawings.
The device 1 is intended to be installed on any existing water pipe in a sanitary installation, for example the water inlet 6 being directly screwed using a screw thread 8 of the water inlet 6 onto a shower tap (not depicted) and a shower hose (not depicted) being screwed onto it onto a screw thread 9 of the water outlet 7.
The diffusion device 1 may also be incorporated directly into existing devices or installations, for example into a shower head, a water inlet of the shower head constituting the water inlet 6 into the base 2 and the shower head rows constituting the water outlet 7 from the base 2, the base 2 potentially comprising a mixing chamber intended to allow the product to mix with the stream of water. Typically, the diffusion device may be installed at various points in a sanitary water distribution system, for example at a tap, in a shower head or some intermediate location between the tap and the shower head.
The diffusion device 1 allows an encapsulated product to be mixed into the water passing through said device 1. For that, the device comprises a housing 10 intended to accept a capsule 11 with a peripheral flange 12 containing a water soluble product 13. The product 13 contained in the capsule 11 may for example be soap, a cream, a foaming agent, a shampoo, a bodycare, skincare or haircare product, an antibacterial product, essential oils, detergent or any other liquid, gel, solid or water-soluble powder product.
In order to allow the product 13 to mix into a stream of water 14 entering the device 1, the device 1 comprises an element 15 for supplying water from the passage 5 of the base 2 as far as the housing 10 for a capsule 11 on the one hand and, on the other hand, an element 16 for returning water from the housing 10 for a capsule 11 as far as said water passage 5 in the base 2. Typically, the water supply element 15 supplying water from the passage 5 to the housing 10 is a water supply hose 15. The hose 15 supplying water to the housing 10 comprises a water supply inlet 17 situated in the passage 5, this water supply inlet 17 being situated upstream of the passage 5 and oriented in such a way as to divert part of the stream 14 as a secondary stream 18 circulating along the pipe 15. An outlet 19 of the pipe 15 opens directly into the housing 10 into which the capsule 11 is inserted. When the device is being used, the water supply outlet 19 ideally opens directly into a puncturable capsule 11, as can be seen in
In the same way, the water return element 16 takes the form of a hose 16 that has an inlet 20 situated in the housing 10, or even inside the puncturable capsule 11 when the device is in use, as well as an outlet 21 which opens directly into the passage 5 downstream of said passage 5 and is directed toward the water outlet 7 from the base 2. The positioning of the water supply inlet 17 downstream of the passage 5 creates a raised pressure in the capsule 11 as the secondary stream 18 enters said capsule. Likewise, the positioning of the water return outlet 20 downstream of the passage 5 creates a reduced pressure in the capsule which, combined with the raised pressure created by the entry of the secondary stream 18, allows a secondary stream 23 of water laden with product to be expelled into the passage 5.
As can be seen in
Reference is made to
The mount 3 comprises a screw thread 26 intended to collaborate with a lower screw thread 27 of the puncturing device 4. The mount 3 also comprises a guide 28 intended to guide a valve 29 in translational movement along the axis 25.
The puncturing device 4 comprises a trench 37 situated between an upper face 38 of the puncturing device 4 and the lateral face 32 thereof. This trench 37 has grooves 39 developing parallel to the axis 25.
The upper face 38 of the puncturing device 4 comprises a puncturing mechanism in the form of two chamfered pins 40 that have an upper end 41 able to puncture a wall 42 of the capsule 11. Advantageously, the outlet 19 of the hose 15 supplying water to the housing 10 and the inlet 20 of the hose 16 returning water to the passage 5 are situated on upper faces 43 of a first pin 40A and of a second pin 40B respectively. Locating the outlet 19 of the water supply pipe 15 on an upper face 43A of the first pin 40A allows the secondary stream of water 18 to open directly into the capsule 11 in use, the upper end 41A of the first pin 40A having passed through the wall 42 of the capsule 11. Likewise, locating the second pin 40B for the inlet 20 of the water return pipe 16 into the passage 5 on the upper face 43B ensures that the secondary stream 23 of laden water is removed correctly from the capsule 11 to the passage 5. The first pin 40A and the second pin 40B are both situated in a circular cover 44 situated on the upper face 38 of the puncturing device and intended to accept a plate 45 of the valve 29. The puncturing device 4 further comprises a central circular orifice 46 passing through the puncturing device 4 along the axis 25. The pins 40 may have any shape that allows them to degrade a wall of the capsule so as to allow the product to escape from the capsule. Thus, the pins 40 may have a spiked shape as depicted in
The puncturing device 4 on a periphery of its upper face 38 comprises a receptacle 99 for a seal 48. The receptacle 99 extends around the periphery of the upper face 38 around the cover 44. The seal 48 is housed in this receptacle and mechanically held in position for example using a bead 49. The seal 48 on an upper face comprises a bearing surface 47, said upper surface of the seal 48 being the opposite face to the face of the seal 48 in contact with the upper face 38 of the puncturing device 4. In an embodiment that has not been depicted, the upper face 38 of the puncturing device 4 has no receptacle 99 and no bead 49 for the seal 48, the bearing surface 47 being incorporated directly into said upper face 38 of the puncturing device, a sealing bead in this case being provided on the flange 12 of the capsule 11.
The lower part 29A of the valve 29 is secured to the upper part 29B of the valve 29 by any means known to those skilled in the art, for example by screw fastening. A central section 55 of the valve 29, which may potentially be made up jointly by the lower part 29A and the upper part 29B of the valve 29, complements the central orifice 46 of the puncturing device 4. Lateral housings 56 are situated on a lateral exterior face 57 of this central section 55 so as to accept seals 58 that guarantee the sealing of the valve 29 in the central orifice 46 of the puncturing device. This central section 55 connects the plate 45 of the upper part 29B of the valve 29 to the chamfered lower face 50 of the lower part 29A of the valve 29. The plate 45 is of a shape that complements the cover 44 provided in the upper face 38 of the puncturing device 4. The plate has two through-orifices 59 that complement the pins 40 of the puncturing device 4.
When the device 1 is in the open position, the lower face 82 of the upper part 72 of the knob 34 and the lower face 83 of the shoulder 70 of the step 69 of the backing ring 60 both face a first portion 85 of the bearing surface 47. When the device is in the open position, a second portion 86 of the bearing surface 47, which is distinct from the first portion 85 of the bearing surface 47, faces neither the lower face 83 of the shoulder 70 of the step 69 of the backing ring 60 nor the lower face 82 of the upper part 72 of the knob 34. When the device is in the open position, it is possible to insert a capsule 11 into the housing 10 via the lateral opening 84 of the housing 10. The device 1 in the open position in which a capsule has been inserted can be seen in
In order to close the device 1, a user needs to turn the knob 34. The rotating of the knob 34 does not cause the backing ring 60 to rotate. The rotation of the knob 34 and the absence of rotation of the backing ring 60 causes the upper part 72 of the knob 34 to turn with respect to the step 69 of the backing ring 60. When the knob rotates through 180°, the lower face 83 of the shoulder 70 of the step 69 remains facing a first portion 85 of the bearing surface 47 while the lower face 82 of the upper part 72 of the knob 34 comes to face a second portion 86 of the bearing surface 47 that is distinct from the first portion 85 of the bearing surface 47. The housing 10 is thus closed, the lateral opening 84 of the housing 10 being closed off by the upper part 72 of the knob 34 and not allowing a capsule 11 to be inserted into or removed from the housing 10.
The configuration depicted in
In use, the guide 28 of the mount 3 is housed in the orifice 51 of the chamfered lower face 50 of the lower part 29A of the valve 29. A return element 88, such as a return spring 88, is situated between an end wall 89 of the orifice 51 of the chamfered lower face 50 of the lower part 29A of the valve 29 on the one hand and, on the other hand, an upper face 90 of the guide 28 of the mount 3. The return spring 88 applies, along the axis 25, a return force to the valve 29 keeping the latter away from the mount 3 and ensuring, in the absence of an opposing force, contact between the upper face 53 of the lateral wall 52 of the lower part 29A of the valve 29 and the seal 54 of the lower face 31 of the puncturing device 4. If there is a stream 14 flowing along the passage 5, this stream also applies to the chamfered lower face 50 of the valve 29 a force which also tends to push the valve 29 back and maintain contact between the upper face 53 of the wall 52 of the lower part 29A of the valve 29 and the seal 54 of the lower face 31 of the puncturing device 4. The external lateral clearance 66 of the backing ring 60 is housed between the knob 34 and the retaining ring 67. The skirt 63 of the backing ring 60 is housed in the trench 37 of the puncturing device 4. Likewise, the ribs 65 of the lateral outer face 64 of the skirt 63 are housed in the grooves 39 of the trench 37.
In an alternative form of embodiment, the lower face 83 of the shoulder 70 of the step 69 of the backing ring 60 and the lower face 82 of the upper part 72 of the knob are situated in the same plane, the space between the plane in which the plate 45 is situated and the plane in which the lower face 83 of the shoulder 70 and the lower face 82 are situated being slightly greater than the thickness of the flange 12 of the capsule 11, said flange 12 developing in the continuation of the puncturable wall 42 of the capsule 11. In this alternative form, the capsule 11 is guided in insertion by collaboration of the puncturable wall 42 with the plate 45 and of the upper face 95 of the flange with the lower face 82 and the lower face 83 of the shoulder 70.
In another alternative form that can be seen in
When the knob 34 is turned to close, collaboration between the lateral screw threads 33 of the puncturing device 4 and the spikes 35 of the knob 34 forces the knob 34 to effect a helicoidal movement with respect to the puncturing device 4.
The knob 34 presses against the external lateral clearance 66 of the backing ring 60 causing said backing ring 60 to move. However, the abutment of the ribs 65 against internal faces of the grooves 39 of the trench 37 prevents the backing ring 60 from turning, limiting its movement to a translational movement along the axis 25 with respect to the puncturing device 4. The helicoidal rotation of the knob 34 brings the lower face 78 of the knob 34 and the rim 79 of the base 2 closer together. Likewise, the translational movement of the backing ring 60 brings the skirt 63 of the backing ring 60 and the end wall 94 of the trench 37 closer together. During the closure movement, the lower face 82 of the upper part 72 of the knob 34 presses against the upper face 95 of the flange 12. Likewise, translational movement of the backing ring 60 forces the lower face 83 of the shoulder 70 of the step 69 of the backing ring 60 to bear against the upper face 95 of the flange 12. These pressures on the flange 12 of the capsule 11, applied respectively by the lower face 82 and by the lower face 83 of the shoulder 70, force the capsule 11 to move translationally along the axis 25. During this movement of the capsule 11, the lower face 96 of the flange 12 of the capsule 11 presses against the plate 45 of the valve 29, applying to the valve 29 a force that opposes the force applied by the return spring 88 and causing the valve 29 to move axially along the axis 25. The pressure of the lower face 96 of the flange 12 of the capsule 11 on the plate 45 of the valve 29 pushes the plate 45 back into the cover 44 of the puncturing device 4. As the plate 45 is pushed back into the cover 44, the pins 40 come through said plate 45, the upper end 41 of the pins 40 thus puncturing the puncturable wall 42 of the capsule 11 resting against the upper face 80 of the plate 45. Further, the section 55 of the valve 29 slides in the central orifice 46 of the puncturing device 4 and the upper face 53 of the lateral wall 52 of the lower part 29A of the valve 29 moves away from the seal 54 of the lower face 31 of the puncturing device 4. The movement of the seal 54 away from the upper face 53 simultaneously opens the pipe 15 that supplies water to the housing 10 and the pipe 16 that returns water to the passage 5. Finally, the pressure of the lower face 82 of the upper part 72 of the knob 34 and of the lower face 83 of the shoulder 70 of the step 69 of the backing ring 60 brings the lower face 96 of the flange 12 of the capsule 11 into sealed contact with the bearing surface 47 of the seal 48.
In the embodiment depicted in
When the knob 34 is rotated in the opposite direction corresponding to a movement for opening the device 1, the constituent elements of the device 1 collaborate in the opposite way to the way in which they collaborate in a closure movement, the knob 34 effecting a helicoidal movement that moves it away from the puncturing device 4. As a result, the return spring 88 and the incoming stream 14 push back the valve 29 so as to close the water supply pipe 15 and the water return pipe 16, the flange 12 is no longer held in a sealed manner in the housing 10 and the capsule 11 is pushed back by the plate 45 of the valve 29.
In this alternative embodiment, the knob 234 rests directly on the mount 203, the inner face 278 of the knob being in direct contact with an upper face 100 of the mount 203 or in indirect contact via a sliding seal 101. The knob 234 is mounted with the ability to rotate on the mount 203 by collaboration between spikes 102 situated on the upper face of the mount 203 and complementary grooves 103 in the lower face 278 of the knob 234. A piston 104 is mounted with the capacity for translational movement in the mount 203, the bearing surface 247 intended to collaborate with the rim 273 being situated on an upper face of said piston 104. The piston 104 collaborates with the knob via spikes 235 of the piston 104 that complement a screw thread 233 belonging to the knob. The mount 203 comprises grooves 239 along the axis 25 and in which piston guide elements 265 are inserted.
When the knob 234 is turned, the screw thread 233 of the knob 234 collaborates with the spikes 235 of the piston 104 and, at the same time, the guide elements 265 of the piston 104 collaborate with the grooves 239 of the mount 203. A turning of the knob 234 therefore forces the piston 104 closer, the grooves 239 of the mount 203 limiting the movement of the piston 104 to a transverse movement. When a capsule 211 is inserted in the knob 234, the turning of the knob 234 will allow the flange 212 to be compressed between the bearing region 247 situated on the piston 104 and the interior face of the rim 273. In this embodiment, pins 240 may be situated on the piston 104 and move transversely with it to degrade the capsule 211.
Thus, in another alternative form of the device of
A valve 329 is preferably made in two parts 329A and 329B bonded together for reasons of ease of manufacture but the valve could also be produced as a single piece.
In this embodiment, the guide orifice 351 of the lower face 350 of the valve 329 is of hexagonal shape complementing the guide 328. The guide 328 and the orifice 351 may have any specific shape suited to preventing the valve 329 from turning relative to the mount 303.
In this embodiment, the water supply pipe 315 and the water return pipe 316 pass through the valve 329. The outlet 319 of the water supply pipe 315 and the inlet 320 of the water return pipe 316 are situated in circular orifices 124 of an upper face 125 of the upper part 329B of the valve 329. Hollow needles 128 (see
An upper portion 129 of the upper part 329B of the valve 329 comprises through-orifices 130 opening onto the upper face 125 of the valve 329 on the one hand and, on the other hand, onto a lower face 150 of said upper portion 129. The upper portion 129 on an external lateral face has a screw thread 131 that complements an internal screw thread 132 (see
The plate 345 comprises pins 139 on a peripheral lateral wall 138. The plate 345 also comprises a discontinuity 141 on an upper peripheral edge. A circular seal 152 is housed in this discontinuity 141. This seal 152 forms the bearing surface 347 which is analogous to the bearing surface 47 described hereinabove with reference to
When the device is in the open position, the inlet of the water supply pipe (these are not visible in this cross section) and the outlet 321 of the water return pipe 316 are situated facing the first seal 114. The first seal 114 closes the water supply pipe and the water return pipe 316 by providing sealing between the wall 105 of an external lateral face 117 of the lower part 329A of the valve 329. The sealing of the passage 305 is provided by the collaboration between an external lateral face 149 of the lower portion 127 of the upper part 329B of the valve 329 and the second seal 118, thus preventing water from flowing into the central passage of the bolt 119.
The spike 148 situated on the lower face 378 of the knob 334 is housed at one end of the groove 108 situated on the peripheral upper face 109 of the mount 303. The valve 329 is in the low position in the screw thread 132 of the bolt 119. The plate 345 is distant from the upper face 125 of the upper part 329B of the valve 329, the end-stop sections 137 of the clips 134 being in abutment against the lower face 150 of the upper portion 129 of the upper part 329B of the valve 329. The needles 128 are housed in the orifices 124 of the valve 329 and extend the water supply and water return pipes 316. However, the needles 128 are retracted by the plate 345 which is distant from the upper face 125, the needles 128 then not being long enough to cover the space separating the plate 345 from said upper face 125 and pass through the orifices 144 in the plate 345.
During a movement to close the device after a capsule (not depicted) has been inserted into the housing 310 formed jointly by the plate 345, the knob 334 and the backing ring 360, collaboration of the spike 148 situated on the lower face 378 of the knob 334 and of the groove 108 situated on the peripheral upper face 109 of the mount 303 limits the rotation of the knob 334 with respect to the mount 303 for example to a rotation of 180°. The groove 108 acts as an end stop halting the rotation of the knob 334 between the closed position and the open position of the device. Furthermore, the knob 334 is held axially in position with respect to the mount 303 by the guidance of the dog points 147 in the lateral groove 112 of the support 110, the dog points 147 jointly with the groove 112 blocking the axial movement of the knob 334. The knob 334 is thus limited to a rotational movement between the closed position of the device and the open position of the device and vice versa.
During the closure movement, collaboration between the pins 123 of the bolt 119 and the internal housings 151 of the knob 334 cause the bolt 119 to turn as the knob 334 is turned. This turning of the bolt 119 causes the valve 329 to effect an axial translational movement toward the knob 334 through the collaboration of the internal screw thread 132 of the bolt 119 with the external screw thread 131 of the valve 329. Rotation of the valve 329 is blocked by the collaboration between the guide 328 of the mount 303 and the guide orifice 351 of the lower part 329A of the valve 329. The backing ring 360 is itself kept fixed in terms of rotation by collaboration between the pins 139 of the plate 345 which is borne by the valve 329 and the housings 145 of the backing ring. The turning of the knob 334 and the absence of turning of the backing ring 360 allows the housing 310 to be closed in a way similar to the way described hereinabove with reference to
The axial movement of the valve 329 moves in the passage 305 the inlet of the water supply pipe and the outlet 321 of the water return pipe 316 in such a way as to position the inlet of the water supply pipe and the outlet 321 of the water return pipe 316 between the first seal 114 and the second seal 118 in axial projection, which means to say in the water flow passage 305. This positioning of the inlet of the water supply pipe and of the outlet 321 of the water return pipe 316 uncovers these pipes and allows the housing 310 to be supplied with a stream of water as explained with reference to
Furthermore, the axial movement of the valve 329 first of all causes the upper face 125 of the valve 329 to come into contact with the lower face 133 of the plate 345. As a result, the needles 128 are no longer retracted by the plate 345 and pass through the orifices 144 and project onto the upper face of the plate 345. The projection of the needles 128 allows a film of a capsule situated in the housing to be torn, as described with reference to
Next, the axial movement of the valve 329 pushes the plate 345 toward the knob 334. This movement of the plate 345 causes the bearing surface 347 and the knob 334 to move closer together and allows the flange of a capsule to be clamped between the bearing surface 347 formed by the seal 142 borne by the plate 345 and the lower faces 382 and 383 of the knob 334 and of the backing ring 360 respectively. The clamping of the flange of the capsule is performed in a way similar to that described with reference to
Thus, turning of the knob 334 from an open position of the device to a closed position allows the valve to be moved in such a way as to:
This then allows the product contained in the capsule to diffuse into the stream flowing through the device.
In one particular embodiment, the valve 329 is free to move axially by 5.5 mm and the plate 345 is free to move axially by 1 mm.
In a reverse movement, typically from the closed position of the device to the open position thereof, the turning of the knob causes the valve 329 and the knob 334 to move further apart. During this distancing movement, the inlet of the water supply pipe and the outlet of the water return pipe are moved toward the mount 30 in such a way that said pipes are closed off in a sealed manner by the first seal 114. First of all, while the end-stop sections 137 of the clips 134 are not in contact with the lower face 150 of the upper portion 127 of the upper part 329B of the valve 329, the movement of the valve 329 moves said valve 329 away from the plate 345. This distancing movement retracts the needles 128 into the orifices 144 of the plate 345. Next, the end-stop sections 137 collaborate with the lower face 150 in such a way as to move the plate 345 away from the knob and free the flange of the capsule in the housing. This turning of the knob 334 also causes the capsule housing 310 to open as described hereinabove with reference to
Advantageously, a visual reference is situated on the exterior face of the knob 334 to indicate the location of the spike 148. Likewise, a visual reference is situated on the external face of the mount 303. These references allow the external positions of the spike 148 in the groove 108 to be identified.
Advantageously, one of the pins 123 of the bolt 119 is of special shape and one of the housings 151 of the knob 334 is of a shape that complements said special pin 123. Such a pin 123 of special shape and the complementary housing 151 therefor guarantee that the knob 334 is mounted correctly. The same system may apply in the context of the pins 139 of the plate that complements the housings 145 of the backing ring. The needles 128 may be attached elements or incorporated directly into the upper part 329A of the valve 329. Likewise, the water supply and water return pipes passing through the valve may be formed in any suitable way, for example being situated only in the upper part 329B of the valve 329.
In the embodiments described hereinabove, the inlet of the water supply pipe and the outlet of the water return pipe are positioned along the axis of the inlet and outlet of the passage of the mount respectively. However, in alternative forms of embodiment, the orientation of the water supply pipe inlet and of the water return pipe outlet may differ. A change in orientation and in position of the inlet of the water supply pipe and/or of the outlet of the water return pipe notably allows the flow rate of the streams flowing along the water supply and water return pipes to be regulated. In addition, the inlet of the water supply pipe and the outlet of the water return pipe may open onto the external face of the valve in different radial planes but be oriented in such a way that the water supply and water return pipes are themselves situated in one and the same radial plane. Thus, in the embodiment depicted in
As a general rule, the inlet of the water supply pipe is situated upstream of the passage of the mount and the outlet of the water return pipe is situated downstream of said passage. However, in certain cases, depending on the distribution of pressure in the passage, the position of the inlet of the water supply pipe and the position of the outlet of the water return pipe may be reversed. In an example depicted in
Although the invention has been described in conjunction with a number of particular embodiments it is quite obvious that it is not in any way restricted thereto and that it encompasses all technical equivalents of the means described and combinations thereof where these fall within the scope of the invention.
Use of the verb “comprise”, “have” or “include” and conjugated forms thereof does not exclude there being other elements or steps present than those listed in a claim. The use of the indefinite article “a” or “an” with reference to an element or a step does not, unless otherwise mentioned, exclude there being a plurality of such elements or steps.
In the claims, any reference symbol between parentheses must not be interpreted as placing a restriction on the claim.
| Number | Date | Country | Kind |
|---|---|---|---|
| 1353866 | Apr 2013 | FR | national |
| 1358094 | Aug 2013 | FR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/FR2014/050951 | 4/18/2014 | WO | 00 |
