The invention relates to a textile product or fabrics treating apparatus, in particular to a washing machine, a drying apparatus or a refreshing apparatus, comprising a hand-held ultrasonic cleaning device connected to a main body of the textile product treating apparatus via a flexible hose.
US 2002/0134117 A1 discloses a washing machine comprising an ultrasonic partial washing apparatus. In one embodiment the ultrasonic partial washing apparatus is stationarily mounted above the loading opening of the top loader washing machine. The sonotrode of the ultrasonic partial washing apparatus is pointing down to the opening of the washing machine and a fabrics to be cleaned by the partial washing apparatus is passed along the bottom surface of the sonotrode to clean stained areas of the fabrics. In another embodiment the partial washing apparatus is formed as a hand-held wand which is connected via a flexible hose to the washing machine. Electrical leads to the transducer within the wand and a liquid pipe connected to a nozzle in the wand run within the flexible hose such that the wand is supplied with liquid and electrical energy from the main body of the washing machine.
It is an object of the invention to provide a textile product treating apparatus having a hand-held ultrasonic cleaning device with improved amenities for the user of the ultrasonic cleaning device. It is a further object of the invention to provide a textile product treating apparatus having improved security functions when using the ultrasonic cleaning device of the apparatus.
The invention is defined in claim 1. Particular embodiments are set out in the dependent claims.
According to claim 1, a textile product or fabrics treating apparatus is provided having a main body in which the main unit for washing, drying and/or refreshing the textile product or fabrics is arranged. A hand-held ultrasonic cleaning device or partial washing device is connected to the main body via a flexible hose and may be freely moved by the user of the ultrasonic cleaning device. At least a portion of the top area of the main body is formed as a treatment area in which a stained textile product or fabric can be laid down to be cleaned by the user by pointing at the stained region of the textile product with an ultrasonic wave emitting surface of the ultrasonic cleaning device. Thereby a working space for the user is provided which does not necessitate a separate table located close to the treating apparatus for placing the textile product.
Preferably the ultrasonic cleaning device can be operated completely independent of the operation of the treating apparatus in which other textile products may be washed, dried or refreshed. For example, only the main power of the treating apparatus has to be switched on so that the washing, drying and/or refreshing device of the treating apparatus and the ultrasonic cleaning device can be operated, as far as need for cleaning exists. The textile product treating apparatus may be any type of washing machine, for example a tumbler-type washing machine including the function of a tumble dryer. Or it may be a stand-alone drying apparatus, for example a condenser dryer for drying the laundry. Or it may be a refreshing apparatus which provides a partial wash (dry washing with partial humidification of the laundry) or the like.
In a preferred embodiment a sink unit is arranged at the top portion of the main body, wherein the treatment area is part of or neighbouring the sink unit. The sink unit has a drain to discharge liquid from the sink, thereby liquid (for example water) is collected by the sink and drained out of the working area. In particular when the ultrasonic cleaning device comprises a nozzle for spraying a liquid to the textile product to be cleaned, the excessive liquid of the cleaning device and the soiled liquid are removed. Thereby for example the humidifying of the textile product can be restricted to the stained area.
In a further embodiment a basin is integrated to the sink unit for a fluid pre-treatment of the textile products, for example by a hand-wash. Also liquid may be applied to the textile by drowning the textile in the liquid stored in the basin prior to the ultrasonic cleaning using the ultrasonic cleaning device.
Preferentially the ultrasonic cleaning device is provided with a nozzle for spraying a liquid from a liquid supply device to humidify the textile product while cleaning. The liquid supply device may comprise a liquid container arranged within the ultrasonic cleaning device or it is arranged in the treating apparatus and connected to the nozzle in the ultrasonic cleaning device by a liquid conduit.
In a preferred embodiment a heater element is provided to heat the liquid supplied to the nozzle such that the cleaning efficiency may be further improved by heating the cleaning liquid prior to its application to the textile product. The heater element can be arranged within the main body of the apparatus. For example the heater element is the standard heater element of a washing machine or the like. Preferentially the heater element is arranged in the ultrasonic cleaning device and is provided as an electrical flow heater, the energy of which is supplied via conductive leads through the flexible hose from the treating apparatus.
In a further embodiment a sensor device is provided which detects the ultrasonic wave emitting surface of the ultrasonic cleaning device being in contact or in close proximity to an object (i.e. the textile product or fabrics to be cleaned) and the operation of the ultrasonic transducer is interrupted as soon as the ultrasonic wave emitting surface is not in contact or close to an object. Thereby a free emission of ultrasonic waves which may propagate to the body of the user is avoided and the security of the device in use is improved. The sensor device may be arranged at or within the ultrasonic cleaning device or may be arranged at the treatment area on the top of the main body.
In a particular embodiment the treatment surface for treating the textile product using the ultrasonic cleaning device comprises an illumination device, in particular arranged below the treatment surface, such that during ultrasonic cleaning the stained area of the textile product can be visually inspected and the cleaning result can be verified. In this case the sensor device for activating/deactivating the ultrasonic transducer preferentially comprises a photo-detecting device which is sensitive to the light emission from the illumination device. Preferably the illumination device emits a specific wavelength or a modulated light signal such that by wavelength or modulation correlation the proximity of the ultrasonic wave emission surface to the treatment surface is detected without interference from other light sources.
According to a further embodiment, the drain of the sink is connected to a liquid collecting container which collects the liquid coming from the sink and treating area. By providing the liquid container, e.g. ultrasonic cleaning liquids do not come in contact with the laundry being simultaneously cleaned in the main body of the treating apparatus. In particular, when the treating apparatus is a condenser dryer, one liquid container may be provided for collecting the liquid drained from the sink and treatment area as well as collecting water condensed from drying laundry in the condenser dryer.
In a further embodiment the liquid for ultrasonic cleaning is supplied from the main body of the treatment apparatus to the ultrasonic cleaning device and a compartment for storing a liquid or dry detergent to be added to the cleaning liquid is arranged within a drawer arranged at the main body of the treating apparatus. If the treating apparatus is for example a washing machine, one or more separate compartments or liquid containers may be provided in the conventional drawer which is provided to store the detergent for the washing cycles of the washing machine.
In a further embodiment a lid is arranged at the top of the main body which covers the sink and/or treating area on the top of the main body when not in use.
In a preferred embodiment a compartment preferentially integrated within the main body's outer shape is arranged at the main body in which the ultrasonic cleaning device can be stored when not in use. Thereby the ultrasonic cleaning device can not be damaged during transportation of the treating apparatus. Preferentially the flexible hose connecting the main body to the ultrasonic cleaning device can also be stored in the compartment which improves the optical appearance and security of the apparatus.
In a further embodiment the compartment for the ultrasonic cleaning device has its opening on the top side of the apparatus and preferentially the opening is covered by the lid for covering the sink and/or treatment area. Than all functional elements provided for ultrasonic cleaning are available or hidden when opening and closing the lid.
Reference is made in detail to preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. The drawings show:
At the front-edge of the top cover 3 a deposition compartment 8 is arranged below the outer surface of the overall body of the washing machine 1. As shown, the deposition compartment 8 has an opening and an ultrasonic wand 10 is stored within the deposition compartment 8, thereby being freely accessible through the opening. In a further embodiment not shown the deposition compartment 8 is covered by a pivotable or slideable lid or may be formed in a separate drawer. It may also be integrated in the detergent drawer which has the deposition compartment 8 as a separate compartment.
As shown in
As shown in
The shielding member 33 has an opening 37 and when the tip portion of the shield member 33 adjoining the opening 37 abuts a textile product to be cleaned, the shield member axially slides into the wand body 32. When the user pushes the wand body 32 down while the shield member 33 abuts on a textile product, the shield member 33 is pushed inwardly until the emitting surface 36 also abuts the textile product at the opening 37. In this position, a lever of a micro-switch 44 is pushed by a protrusion 46 at the inner end of the shield member 33.
The ultrasonic wand 1 is connected via a hose 38 to a washing machine, a dryer or a pre-treatment machine (not shown) which supply the electrical transducer driving signals to the piezo transducer 34 and a detergent liquid for cleaning the product. The electrical wave signal from the machine is transmitted via a first wire 39 to a push button 43 to be operated by the user, if he wants to emit the ultrasonic waves. The push button 43 is serial-connected via a third wire 41 with the micro-switch 44 and from there by a fourth wire 42 to a first metalized surface of the piezo transducer 34. A second metalized surface of the piezo transducer 34 is connected to a second wire 40 which is fed back to the hose 38 and from there to the machine where an electrical ultra wave signal generator is arranged. In another embodiment not shown the ultra wave signal generator may be arranged within the wand body 32 and in a further embodiment the power supply for the ultra wave generator is also arranged within the wand body 32.
If no compression force is applied between the shield member 33 and the wand body 32, a spiral spring 45 between the wand body 32 and the inner end of the shield member 33 pushes the shield member 33 to its outmost position where a further movement of the shield member 33 is stopped by a ledge 47 running at the inner front end of the wand body 32. In the machine connected via hose 38 to the ultrasonic wand 31 a current detector is arranged for detecting a current from the ultrasonic generator to the ultrasonic transducer 34. As soon as a current is detected, i.e. as soon as push button 43 and micro-switch 44 close their electrical contacts, a pump in the machine is activated for supplying the cleaning detergent and a detergent liquid is sprayed from a nozzle at the tip end of a conduit 48. Thereby a liquid jet 49 is sprayed through the opening 37 to humidify the textile product to be cleaned with the ultrasonic wand 31.
A draining pump 64 is controlled by the control unit 61 to discharge soiled water from the washing machine. Draining pump 64 may be the main draining pump of the washing machine for also draining the washing tub or may be a separate draining pump 63 connected only to a container 68 to drain soiled liquid from this container 68. The soiled liquid is discharged via draining hose 65 to the outside of the washing machine. A level switch 70 is arranged at the container 61 and provides a level signal to the control unit 61 which, upon receipt of the level signal, activates the draining pump 64 to pump out the liquid from container 68.
An electrical wand supply 66 is also controlled by the control unit 61 and includes an ultrasonic generator providing the electrical ultrasonic driving signal for the ultrasonic transducer 34 arranged within the ultrasonic wand 10. If a heater 50 is arranged within the wand 10, a controllable voltage supply is also included in the electrical wand supply 66. Electrical leads (e.g. first and second wires 39 and 40) run from electrical wand supply 66 through the hose 11 to the ultrasonic wand 10.
In the wand 10 a nozzle unit 72 is arranged comprising the conduit 48 and the nozzle for spraying the liquid (see
A remote control unit 74 arranged within the wand 10 comprises push button 43 and micro switch 44 (range detector). In the case of the ultrasonic wand shown in
In addition or alternatively to the detector (herein micro-switch 44 detecting the contact of the wave emitting surface to the laundry to be cleaned) an ultrasonic detector 76 may be arranged beneath or close to the treatment platform 6 to detect ultrasonic waves emitted from the wand 10. The detected signal is supplied to the control unit 61. In this case, ultrasonic acoustic signals are periodically transmitted with low energy from the emitting surface 36, as long as the wand is not close to the detector 76, and as soon as the weak ultrasonic signals are detected by detector 76, the ultrasonic power is increased for ultrasonic treating of the laundry. As soon as the ultrasonic signal detected by the detector 76 falls below a lower threshold, emission of ultrasonic waves with high energy is stopped. Thereby, ultrasonic waves having high energy are only emitted into the direction of the treatment platform 6 and uncontrolled emission into other directions is prevented.
As indicated by the dashed lines, the first detergent compartment and the second liquid compartment 88 are arranged within the drawer 14 of the washing machine. One or more of elements 82, 84, 89 and 62 can also be arranged within the drawer 14. In a further embodiment not shown a separate drawer may be provided in the washing machine for storing the ultrasonic liquids and/or ultrasonic detergent.
By opening the lid 91, as shown in the sequence of
Number | Date | Country | Kind |
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05 000 647.7 | Jan 2005 | EP | regional |