Patent Application
20250127345
This disclosure relates to the technical field of household electric appliances, and more particularly to a dry and wet tissue machine and a control method thereof.
Tissues are common daily supply in people's lives, which are classified into individual pieces of tissues and rolled tissues. With the improvement of people's living standards, the demand of humidifying tissues before use is increasing, and corresponding equipment is gradually being promoted and used. A Chinese patent with a publication No. CN209346855U discloses a humidifying mechanism and tissue distributor to moisturize tissues through a water spray. During a process of outputting a tissue, a fixed length of the tissue is output mainly by detecting a number of rotations of a conveying spindle, and the output tissue is cut using a blade, which cannot utilize a tear line formed by the tissue itself for tearing. This makes an overall structure more complex. Moreover, due to a limited cutting force of the blade, it can only cut thinner tissues. For tissues that requires humidification, the thicker the tissues, the better the humidifying effect. The case of using the blade leads to the inability to use thicker tissues, thereby affecting the user experience. Therefore, how to improve user experience and simplify the overall structure is a technical problem that the disclosure aims to solve.
The disclosure provides a dry and wet tissue machine and a control method thereof, which simplifies an overall structure of the dry and wet tissue machine and improves use experience of users to meet usage requirements of thicker tissues.
In order to achieve the aforementioned purpose, the disclosure applies the following technical scheme.
The disclosure provides the dry and wet tissue machine, including:
In an embodiment, the pressing component includes a first press roller, and the first press roller is rotatably disposed on the cover.
In an embodiment, a number of the first press roller of the pressing component is two, and the two first press rollers are arranged side by side.
In an embodiment, the pressing component further includes a second press roller and a pressing piece, the second press roller is rotatably disposed on the cover, and the pressing piece is disposed on the cover and is located on an inner side of the second press roller.
In an embodiment, the driver includes a motor, a worm wheel and a worm shaft, the worm shaft is disposed on a rotating shaft of the motor, the worm wheel is connected to the worm shaft, and the worm wheel is rotatably connected to the conveying roller.
In an embodiment, the dry and wet machine further includes a magnetic induction switch, the magnetic induction switch includes a permanent magnet and a magnetic induction component, the permanent magnet is disposed on the cover, and the magnetic induction component is disposed on the housing and electrically connected to the electric control board; the permanent magnet and the magnetic induction component are disposed opposite to each other when the cover is closed.
In an embodiment, the dry and wet machine further includes a water tank assembly, the water tank assembly includes a water tank, a tank cover and a flexible pipe, the tank cover is provided with a water outlet and an air intake, and an inner surface of the tank cover is provided with a pressing type valve and an air intake check valve; the pressing type valve is in communication with the water outlet, the air intake check valve is in communication with the air intake, and the pressing type valve is configured to open the water outlet under external pressure; the flexible pipe is connected to the water outlet, and the tank cover is detachably disposed on a tank opening of the water tank;
In an embodiment, the insertion slot is arranged horizontally, the water tank is horizontally inserted into the insertion slot, and a counterweight is disposed at a free end of the flexible pipe.
In an embodiment, the pressing type valve includes a mounting pipe and a glass ball, the mounting pipe is provided with an annular blocking surface, the glass ball is slidably disposed in the mounting pipe and configured to have a tendency of moving towards the annular blocking surface under an action of water flow, and the mounting pipe is in communication with the water outlet and arranged coaxially with the water outlet.
In an embodiment, the disclosure further provides a control method of the dry and wet tissue machine, and a tissue of a tissue roll to be used is provided with tear lines to form multiple equal length tissue sections;
In an embodiment, after placing the tissue roll into the storage space and closing the cover, the initial mode specifically includes:
Compared with the related art, the technical solution of the disclosure has the following technical effects: the first photoelectric sensor, the spray head, and the second photoelectric sensor are sequentially arranged in that order in the conveying channel defined between the cover and the housing, and the first photoelectric sensor and the second photoelectric sensor are electrically connected to the electric control board individually; during a process of the tissue roll outputting the tissue, an initial position of the tissue end of the tissue roll can be detected each time through the first photoelectric sensor, which enables the conveying roller to output the fixed length tissue even after a long-term operation. When the dry and wet tissue machine is in use by a user, the output tissue can be pulled off by using the tear lines on the tissue, thereby improving the user experience; by using the tear lines formed on the tissue roll itself to pull off the tissue for single fixed-length output without an additional cutting blade, the overall structure is effectively simplified.
As shown in
A humidification mechanism 2, the humidification mechanism 2 includes a spray head 21, and the spray head 21 is disposed on the housing 11.
A conveying and pressing assembly 3, and the conveying and pressing assembly 3 includes a driving module (also referred to as driver) 31, a conveying roller 32 and a pressing component 33; the conveying roller 32 is rotatably disposed on the housing 11, the pressing component 33 is disposed on the cover 12, and the driving module 31 is configured to drive the conveying roller 32 to rotate.
A detection assembly 4, the detection assembly 4 includes an electric control board 41, a first photoelectric sensor 42 and a second photoelectric sensor 43, and the first photoelectric sensor 42 and the second photoelectric sensor 43 are connected to the electric control board 41 individually.
When the cover 12 is closed, a conveying channel 16 is defined between the cover 12 and the housing 11, the spray head 21 is configured to spray water into the conveying channel 16, and the pressing component 33 is pressed on the conveying roller 32; along a conveying direction of the conveying channel 16, the first photoelectric sensor 42, the spray head 21 and the second photoelectric sensor 43 are sequentially arranged in that order.
In addition, the electric control board 41 is disposed in the electric compartment 200, the driving module 31 is also electrically connected to the electric control board 41 to control power on or off of the driving module 31 through the electric control board 41.
Specifically, during an actual use, a user places a tissue roll into the storage space 100 and extends an end of the tissue roll over the conveying roller 32 downward. The conveying roller 32 is generally disposed at a top edge of the storage space 100 to ensure that a tissue that passes over the conveying roller 32 can extend downward along a front surface of the housing 11.
After the cover 12 is closed, the pressing component 33 presses the tissue tightly against the conveying roller 32, and the tissue is located in the conveying channel 16 defined by the cover 12 and the front surface of the housing 11. After the user presses a control button on the cover 12 or the housing 11, the electric control board 41 receives a signal to control the driving module 31 to power on and drive the conveying roller 32 to rotate. A rotation of the conveying roller 32 will drive the tissue roll to unroll to make the tissue be continuously output outward. By controlling a number of the rotation of the conveying roller 32, a fixed length tissue can be output. As for a mode to accurately control the number of the rotation of the conveying roller 32, conventional techniques such as grating can be used to detect the number of the rotation, which is not limited and will not be further discussed here.
Due to tear lines on the tissue, after the fixed length tissue is output, the driving module 31 is powered off, thereby making the conveying roller 32 be locked and cannot rotate. At this time, a tear line of a single section tissue that is output completely has passed over the conveying roller 32 and is located in the conveying channel 16. When the user pulls the tissue that is exposed outside the conveying channel 16, the tissue is pressed between the conveying roller 32 and the pressing component 33, and a certain pressing force is generated between the conveying roller 32 and the pressing component 33. This ensures that a contact area between the tissue and the conveying roller 32 is large enough, thereby allowing the user can pull off at least one section of the output tissue through the tear lines.
In this way, there is no need for additional configuration of a cutting blade to cut the tissue, thus achieving an effective simplification of an overall structure. Moreover, for a thicker tissue roll being unrolled to output tissue, the output tissue can be pulled off by the user using its own tear lines. At the same time, the thicker tissue has a better water absorption when the tissue is in use, which improves the use experience.
It is important to ensure that a length of the tissue per output remains substantially constant to meet a requirement of the user to precisely pull off the tissue through the tear lines, then an initial position of a tissue end is detected by the first photoelectric sensor 42.
An adjustment process for the initial position of the tissue end is as follows: when the user presses for outputting the tissue, the first photoelectric sensor 42 detects whether the tissue can be detected. If the first photoelectric sensor 42 can detect the tissue, the driving module 31 is triggered to drive the conveying roller 32 to rotate in a reverse direction until the tissue end moves above the first photoelectric sensor 42. Conversely, if the first photoelectric sensor 42 fails to detect the tissue, the driving module 31 is controlled to drive the conveying roller 32 to rotate in a forward direction until the tissue end moves to the first photoelectric sensor 42, thereby making the first photoelectric sensor 42 detect the tissue, and then the driving module 31 is triggered to stop driving the conveying roller 32 to rotate.
Though the aforementioned operations, the initial position of the tissue end is always located at the first photoelectric sensor 42 when the tissue is output every time. In this way, when the conveying roller 32 rotates a set number of the rotation, the fixed length tissue is output. Moreover, it effectively solves a problem that the tissue is output too long or too short due to excessive accumulated errors after prolonged use, which can affect the user's experience.
In order to assemble the tissue roll easily, a detachable tissue roll shaft 13 can be disposed in the storage space 100, and the tissue roll shaft 13 is configured to hole the tissue roll and meet a requirement for smooth rotation of the tissue roll.
In addition, physical forms of the first photoelectric sensor 42 and the second photoelectric sensor 43 can be diverse. A detection area of the first photoelectric sensor 42 is located in the conveying channel 16, therefore, the first photoelectric sensor 42 can use a through-beam photoelectric switch, and an emitting element and a receiving element of the through-beam photoelectric switch are correspondingly disposed on the housing 11 and the cover 12.
A detection area of the second photoelectric sensor 43 can be located in the conveying channel 16, or can be located outside the conveying channel 16. When the detection area of the second photoelectric sensor 43 is located in the conveying channel 16, the second photoelectric sensor 43 can also use a through-beam photoelectric switch. When the detection area of the second photoelectric sensor 43 is located outside the conveying channel 16, the second photoelectric sensor 43 can use a reflective photoelectric switch. At this time, the second photoelectric sensor 43 is disposed on the housing 11, and when the cover 12 is closed, the second photoelectric sensor 43 is not covered by the cover 12.
In addition, an extra photoelectric sensor can be added to control a position of the tissue end. First photoelectric sensors 42 can be respectively disposed above and below the spray head 21, and then when the tissue is conveyed, the tissue end is located between the two first photoelectric sensors 42.
In an embodiment, a physical form of the pressing component 33 can include a first press roller 331, and the first press roller 331 is rotatably disposed on the cover 12.
Specifically, by using the first press roller 331 in conjunction with the conveying roller 32 to output the tissue, smooth output of the tissue can be ensured.
Preferably, a number of the first press roller 331 of the pressing component 33 is two, and the two first press rollers 331 are arranged side by side.
Specifically, by configuring the two first press rollers 331 to cooperate to squeeze the conveying roller 32, when the user pulls off the tissue, the two first press rollers 331 can press the tissue more firmly against the conveying roller 32 to prevent the tissue from sliding relative to the conveying roller 32 when the user pulls the tissue, thereby improving the reliability of use.
The conveying roller 32 is located between the two first press rollers 331, one of the two first press rollers 331 is located on an outside of the housing 11, and the other first press roller 331 is located on an inside of the housing 11.
Specifically, the conveying roller 32 is located between the two first press rollers 331, thereby making the contact area between the tissue and the conveying roller 32 is larger. When pulling off the tissue, a greater frictional force is generated between the conveying roller 32 and the tissue to prevent the tissue from sliding relative to the conveying roller 32.
In addition, a plane where axes of the first press roller 331 located on the outside of the housing 11 and the conveying roller 32 are located is perpendicular to a tissue output direction.
Specifically, the first press roller 331 located on the outside of the housing 11 is arranged side by side with the conveying roller 32, which makes the plane where the axes of the first press roller 331 located on the outside of the housing 11 and the conveying roller 32 are located is perpendicular to the tissue output direction. This allows the tissue to be output vertically downward along a tangential direction of a circumference of the first press roller 331 and the conveying roller 32, thereby ensuring that the tissue can be smoothly output from the conveying channel 16.
In addition, in order to make the first press rollers 331 can evenly apply pressure to the conveying roller 32 to ensure a smooth output of the tissue and meet a requirement that a static friction between the tissue and the conveying roller 32 can pull off the tear lines, the conveying and pressing assembly 33 further includes a spring 34, and the spring 34 is configured to apply an elastic force towards the conveying roller 32 on the first press rollers 331.
Specifically, the spring 34 applies the elastic force to the first press rollers 331, which makes the first press rollers 331 apply pressure evenly to the conveying roller 32 as a whole. The spring 34 is a torsion spring, an end of the torsion spring is connected to the one of the first press rollers 331, and the other end of the torsion spring is connected to the other first press roller 331.
In order to meet a requirement for installing the first press rollers 331, two bar-shaped mounting holes 121 are respectively disposed on two sides of the cover 12, and ends of the first press rollers 331 are disposed in the bar-shaped mounting holes 121. In addition, for an outer first press roller 331 (i.e., the first press roller 331 located on the outside of the cover), in order to meet a requirement for the first press roller 331 to apply uniform pressure to the conveying roller 32 and ensure a smooth output of the tissue, when the cover 12 is closed, the bar-shaped mounting holes 121 on the outer side are arranged to extend horizontally.
Specifically, after the cover 12 is closed, the first press roller 331 located on the outside squeezes against the conveying roller 32. The first press roller 331 on the outside, under a reaction force of the conveying roller 32, moves along the horizontally arranged bar-shaped mounting holes 121 to ensure that the plane where the axes of the first press roller 331 on the outside of the housing 11 and the conveying roller 32 are located is perpendicular to the tissue output direction, thereby meeting the requirement for smooth output of the tissue.
In another embodiment, for the pressing component 33, the physical form of the pressing component 33 can also include a second press roller 332 and a pressing piece 333. The second press roller 332 is rotatably disposed on the cover 12, and the pressing piece 333 is disposed on the cover 12 and located on an inner side of the second press roller 332.
Specifically, when the second press roller 332 is in use, on the one hand, the second press roller 332 cooperates with the conveying roller 32 to output the tissue, and on the other hand, the second press roller 332 cooperates with the pressing piece 333 to increase the static friction between the tissue and the conveying roller 32 when pulling off the tissue. During a process where the conveying roller 32 rotates to output the tissue, the second press roller 332 will rotate due to an action of the tissue, and the tissue will slide relative to the pressing piece 333. The pressing piece 333 can be formed as a pressure bar or a pressure plate, among other physical forms.
In another embodiment, in order to provide a self-locking function for the conveying roller 32 through the driving module 31, the driving module 31 includes a motor 311, a worm wheel 312, and a worm shaft 313. The worm shaft 313 is disposed on a rotating shaft of the motor 311, the worm wheel 312 is connected to the worm shaft 313, and the worm wheel 312 is drivingly connected to the conveying roller 32.
Specifically, a power transmission of the motor 311 is achieved by a cooperation of the worm wheel 312 and the worm shaft 313. When the motor 311 is powered off, a self-locking mechanism is formed between the worm wheel 312 and the worm shaft 313, and then the rotation of the conveying roller 32 is locked. In this way, when the user pulls the tissue, the conveying roller 32 can generate a strong friction force against the tissue. A drive connection design between the worm wheel 312 and the conveying roller 32 can be achieved through gears. For example, the gears are respectively disposed on the worm wheel 312 and the conveying roller 32, and the two gears are meshing with each other.
A double press rollers design and a worm wheel and worm shaft drive combination design together achieve self-locking of the tissue, which enables the user to reliably pull off the tissue.
In order to further increase a friction coefficient of the conveying roller 32, a rubber layer or other materials with a higher friction coefficient can be used to wrap around the conveying roller 32, thereby further enhancing the friction coefficient.
In another embodiment, the dry and wet tissue machine also includes a magnetic induction switch, and the magnetic induction switch includes a permanent magnet 61 and a magnetic induction component 62. The permanent magnet 61 is disposed on the cover 12, and the magnetic induction component 62 is disposed on the housing 11 and electrically connected to the electric control board 41; when the cover is closed, the permanent magnet 61 and the magnetic induction component 62 are arranged opposite to each other.
Specifically, by adding the magnetic induction switch, the magnetic induction switch is used to detect whether the cover 12 is closed. After the cover 12 is fully closed, the permanent magnet 61 is located in an induction area produced by the magnetic induction component 62 to provide a signal to the electric control board 41. This allows the electric control board 41 to perform corresponding operations according to a button press by the user, thereby improving the operation reliability of the machine. The magnetic induction component 62 can be a Hall switch or a reed switch.
As shown in
An insertion slot 14 is defined on the shell 1, and a plug pipe 15 is disposed in the insertion slot 14; the humidification mechanism 2 further includes a water pump 22, a heating passage 23 and an electric heating element (also referred to as electric heater) 24, the electric heating element 24 is disposed on the heating passage 23, and the plug pipe 15 is connected to the spray head 21 through the water pump 22 and the heating passage 23 in sequence.
After the water tank 51 is inserted into the insertion slot 14, the plug pipe 15 is sealingly inserted into the water outlet 521 and presses the pressing type valve 54 to open the pressing type valve 54.
Specifically, when the dry and wet machine is in use, the water pump 22 is started to transport water from the water tank 51 to the spray head 21, and the water is atomized into a mist and sprayed through the spray head 21.
The water tank 51 can lie horizontally or be inserted vertically in the insertion slot 14. In order to maximize a volume of the water tank 51 and fully utilize a space inside the shell 1, the water tank 51 is installed horizontally in the housing 11 when the water tank 51 is in use. By configuring an additional pressing type valve 54 at the water outlet 521, when the water tank 51 is installed into the insertion slot 14, a lying water tank 51 (i.e., the water tank 51 is installed horizontally in the housing 11) is closed due to the pressing type valve 54, which prevents the water from being discharged through the water outlet 521, thereby avoiding water leakage at the water outlet 521 during a disassembly and assembly process.
After the plug pipe 14 is sealingly inserted into the water outlet 521, a water sealing structure is formed at a connection part between the plug pipe 15 and the water outlet 521. As the plug pipe 15 continues to be inserted into the water outlet 521, the plug pipe 15 presses against the pressing type valve 54 to open the pressing type valve 54. In this way, under an action of the water pump 22, the water from the water tank 51 can be discharged through the flexible pipe 53 from the water outlet 521.
In addition, when the water is discharged, in order to balance pressure inside the water tank 51, outside air can enter into the water tank 51 through the air intake 522. When the water pump 22 is operated, a negative pressure is formed inside the water tank 51 to open the air intake check valve 55, which allows the outside air to enter into the water tank 51.
By setting the water outlet 521 on the tank cover 52 and installing the pressing type valve 54 on the inner side of the tank cover 52, when the pressing type valve 54 is not subjected to external pressure during use, the pressing type valve 54 is closed, and then the water outlet 521 is also closed, thereby preventing water leakage when the water tank 51 is installed horizontally. After the water tank 51 is installed into the dry and wet tissue machine, the pressing type valve 54 is pressed, which opens the water outlet 521 to meet the requirement for the water in the water tank 51 to be discharged under the action of the water pump 22. In this way, the horizontal installation of the water tank 51 can be achieved, which makes full use of the horizontal space in the shell 1 of the dry and wet tissue machine to accommodate the water tank 51 to be large enough, thereby increasing the volume of the water tank 51, preventing water leakage during assembly, and enhancing the reliability of use.
In another embodiment, due to a horizontal arrangement of the insertion slot 14, the water tank 51 is inserted horizontally into the insertion slot 14. In order to ensure an effective extraction of the water from the water tank 51, a counterweight 56 can be installed at a free end of the flexible pipe 53.
Specifically, When the water tank 51 is placed horizontally, under an influence of the counterweight 56, a lower end of the flexible pipe 53 is fell onto a side wall of a bottom of the water tank 51. Consequently, during a usage process, the water at the bottom of the water tank 51 can be thoroughly and effectively drawn out through the flexible pipe 53.
In another embodiment, the pressing type valve 54 includes a mounting pipe 541 and a glass ball 542, and the mounting pipe 541 is provided with an annular blocking surface 544; the glass ball 542 is slidably disposed in the mounting pipe 541 and configured to have a tendency of moving towards the annular blocking surface 544 under an action of water flow, and the mounting pipe 541 is in communication with the water outlet 521 and arranged coaxially with the water outlet 521.
Specifically, the glass ball 542 is located in the mounting pipe 541 and in a section of the mounting pipe 541 that the annular blocking surface 544 is away from the water outlet 521, and the glass ball 542 is restricted to slide in the mounting pipe 541.
When the glass ball 542 is not subjected to the external pressure, and as the water tank 51 is laid down or tilted to make the water from the water tank 51 flow outward through the mounting pipe 541, the glass ball 542 will block the outward flow of the water in the mounting pipe 541. Moreover, under an influence of water pressure, the glass ball 542 slides in the mounting pipe 541 and presses against the annular blocking surface 544 to serve to automatically close the mounting pipe 541. When the water tank 51 is installed into the insertion slot 14, the plug pipe 15 is inserted into the mounting pipe 541 and pushes off the glass ball 542, thereby opening the mounting pipe 541.
In some embodiments, in order to further enhance a leak-proof reliability of the water tank 51, the pressing type valve 54 also includes an elastic element 543. The elastic element 543 is located in the mounting pipe 541 and configured to apply an elastic force towards the annular blocking surface 544 on the glass ball 542.
Specifically, the mounting pipe 541 is coaxially arranged with the water outlet 521. After the plug pipe 15 is inserted into the water outlet 521 and is sealingly connected to the water outlet 521, as the water tank 51 continues to be pushed into the insertion slot 14, the plug pipe 15 further extends into the mounting pipe 541 and presses against the glass ball 542. This allows the glass ball 542 to overcome the elastic force of the elastic element 543 and move away from the annular blocking surface 544, thereby opening the water outlet 521.
In some embodiments, in order to disassemble and assemble the water tank 51 easily, the bottom of the water tank 51 defines a mounting groove 57, a handle 58 is disposed in the mounting groove 57, and the handle 58 does not protrude from the mounting groove 57.
Specifically, when it is necessary to disassemble the water tank 51 to refill water, the user can grasp the handle 58 and pull the water tank 51 out from the insertion slot 14.
this embodiment provides a control method of the dry and wet tissue machine as described in the above embodiments, and the tissue of the tissue roll to be used is provided with tear lines to form multiple equal length tissue sections.
The control method includes an initial mode and a working mode.
Under the initial mode, after placing the tissue roll into the storage space 100 and closing the cover 12, the conveying roller 32 is driven to rotate in the forward direction and or in the reverse direction by the driving module 31, thereby making an exposed tissue end of the tissue roll move to the first photoelectric sensor 42.
Under the working mode, the conveying roller 32 is driven to rotate in the forward direction by the driving module 31 to make the tissue roll unroll and output the tissue, then the tissue end passes sequentially through the first photoelectric sensor 42, the spray head 21 and the second photoelectric sensor 43, and the conveying roller 32 is stopped driving to rotate after the tissue roll outputs a tissue section with a fixed length, where the first photoelectric sensor 42 and the second photoelectric sensor 43 are electrically connected to the electric control board 41 individually. After the output tissue section (i.e., tissue section with a fixed length) is tore off, the second photoelectric sensor 43 is exposed and the driving module 31 is triggered to drive the conveying roller 32 to rotate in the forward direction or in the reverse direction until a tissue end moves to the first photoelectric sensor 42.
Specifically, when the user places the tissue roll into the storage space 100 and closes the cover 12, the first photoelectric sensor 42 detects whether there is the tissue. If the first photoelectric sensor 42 detects the tissue, the driving module 31 is triggered to drive the conveying roller 32 to rotate in the reverse direction until the tissue end moves above the first photoelectric sensor 42. Conversely, if the first photoelectric sensor 42 does not detect the tissue, the driving module 31 is controlled to drive the conveying roller 32 to rotate in the forward direction until the first photoelectric sensor 42 detects the tissue.
Through the aforementioned operations, an initial position of the tissue end is always at a position of the first photoelectric sensor 42 and adjacent to the first photoelectric sensor 42. In this way, after the conveying roller 32 rotates the set number of the rotation, the fixed length tissue can be output. Moreover, it can effectively solve the problem of the output tissue being too long or too short due to accumulated errors after prolonged use, which affects the user's experience.
Furthermore, after placing the tissue roll into the storage space 100 and closing the cover 12, the initial mode specifically includes:
Specifically, in the initial mode, when the user places the tissue roll into the storage space 100, a length of the tissue that is pulled out cannot be uniformly controlled. The conveying roller 32 can only play the role of unrolling the tissue roll and cannot rewind the tissue roll. Therefore, when the length of the tissue pulled out is not detected by the second photoelectric sensor 43, the conveying roller 32 can rotate in the reverse direction, thereby allowing a part of the tissue outside the storage space 100 to pull back into the storage space 100, while the tissue roll inside the storage space 100 does not rewind. Moreover, a certain amount of returned tissue can exit outside the tissue roll in the storage space 100.
When the length of the tissue pulled out is detected by the second photoelectric sensor 43, it is determined that the length of the tissue pulled out in an initial state is too long. At this time, the conveying roller 32 does not rotate to avoid the conveying roller 32 rotating in the reverse direction, which could cause the returned tissue to not be completely stored back into the storage space 100 and result in damage to the dry and wet machine.
The following explanation is combined with specific usage scenarios.
When the user just put the tissue roll into the storage space 100, there are three initial states:
When the tissue roll is placed into the storage space 100 and the cover 12 is closed, the magnetic induction component 62 receives a signal, and one second later, the tissue initialization begins operating.
In the state one, the tissue end is located above the first photoelectric sensor 42, and the conveying roller 32 rotates in the forward direction to make the tissue end move to the first photoelectric sensor 42. When the first photoelectric sensor 42 detects a signal value change, the conveying roller 32 stops rotating, and the tissue end reaches the initial position.
In the state two, the tissue end is located between the first photoelectric sensor 42 and the second photoelectric sensor 43, and the conveying roller 32 rotates in the reverse direction to make the tissue end move to the first photoelectric sensor 42. When the first photoelectric sensor 42 detects the signal value change, the conveying roller 32 stops rotating, and the tissue end reaches the initial position.
In the state three, the tissue end is located below the second photoelectric sensor 43, the conveying roller 32 does not rotate automatically, and the tissue does not initialize. When the user tears off the tissue and the tissue end is in the state one or in the state two, the tissue initializes.
After the initialization is complete, when the user touches an initialization button on the shell 1, the conveying roller 32 rotates in the forward direction, and the tissue is output 150 millimeter (mm) (it is known that a length of each section of the tissue is 150 mm, and there is no restriction on the length of each section of the tissue here); at this time, the tissue is in the state three (both the first photoelectric sensor 42 and the second photoelectric sensor 43 detect a tissue signal simultaneously). After the user tears off the tissue, the tissue returns to the state one or the state two, and after a certain period, the tissue initializes again; waiting for a next cycle.
After the initialization is complete, when a wet tissue button is touched, the conveying roller 32 rotates in the forward direction, the tissue is output 150 mm, and a corresponding water pump 22 also operates to spray water, the tissue is humidified when the tissue is output; at this time, the tissue is in the state three (both the first photoelectric sensor 42 and the second photoelectric sensor 43 detect the tissue signal simultaneously). After the user tears off the tissue, the tissue returns to the state one or the state two, and after the certain period, the tissue initializes again; waiting for the next cycle.
In addition, a length of a single-section tissue produced by different manufacturers is different. In order to automatically calculate the length of a single-section tissue to adjust the rotation of the conveying roller 32 accordingly, the specific process is as follows.
After the tissue is initialized, the tissue end is located at the first photoelectric sensor 42, the user triggers a tissue output button, and the conveying roller 32 outputs the tissue according to a default single-section tissue length L0. After outputting the tissue is finished, the user tears off a first section tissue. At this time, an end of the next section tissue is in the state one or the state two (tissue lengths that are significantly larger or smaller than L0 are not considered). After a certain period, the tissue is initialized again. If the conveying roller 32 rotates in the reverse direction by ΔL mm (a output distance of the tissue corresponding to a rotation angle of the conveying roller 32 is calculated by a grating count) and then the tissue reaches the initialization position, it indicates that the length of each section tissue is shorter than the default length by ΔL mm, and the length of each section of the tissue roll is calculated as (L0−ΔL) mm. Similarly, if the conveying roller 32 rotates in the forward direction by AL mm and then the tissue reaches the initialization position, it indicates that the tissue length of each section tissue is longer than the default length by ΔL mm, and the length of each section of the tissue roll is calculated as (L0−ΔL) mm. At this time, the dry and wet tissue machine defaults the calculated length of each section tissue as an output length for this tissue roll, until the cover 12 is opened, the magnetic induction component 62 is triggered, and the tissue length is recalculated.
In another embodiment, last N tissue sections on the tissue roll are provided with multiple detection holes spaced along an unrolling direction; in the working mode, when the driving module 31 drives the conveying roller 32 to output the fixed length tissue, if the first photoelectric sensor 42 is triggered to occur intermittent signal changes, it alerts to replace the tissue roll.
Specifically, as time goes on and the tissue roll is used, a number of remaining sections decreases. By designing the detection holes in the last N tissue section, multiple detection holes are spaced along the un rolling direction. In this way, when the tissue roll is used up to the end, the detection holes intermittently pass by the first photoelectric sensor 42 and are detected, thereby triggering the electric control board 41 to initiate a reminder operation, such as an alarm, to prompt the user to replace the tissue roll timely.
The above only represents specific embodiments of the disclosure, but the scope of protection of the disclosure is not limited thereto. Any variations or substitutions that those skilled in the art, familiar with the technical field of the disclosure, can easily conceive within the scope of the technology disclosed by the disclosure should be covered within the scope of protection of the disclosure. Therefore, the scope of protection of the disclosure should be determined by the scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202310135082X | Feb 2023 | CN | national |
This application is a continuation of International Patent Application No. PCT/CN2023/128225, filed on Oct. 31, 2023, which claims the priority of Chinese Patent Application No. CN202310135082.X, filed on Feb. 20, 2023, both of which are herein incorporated by references in their entirety.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2023/128225 | Oct 2023 | WO |
| Child | 19001616 | US |
