Shunt valve structure, dish washing machine and control method

Abstract

The invention discloses a shunt valve structure, a dish-washing machine and a control method.The shunt valve structure further comprises a driving motor, a water diversion shifting piece, an infrared transceiver and a controller, the driving motor is in transmission connection with the water diversion shifting piece, and a water inlet is communicated with each single water outlet in a switchable mode through the action of the water diversion shifting piece; the controller is electrically connected with the driving motor and the infrared transceiver; a plurality of grooves are concavely formed in the water diversion plectrum at intervals in sequence in the perimeter direction of the water diversion plectrum, the grooves and the water outlets are arranged in a one-to-one correspondence manner, and the lengths of the grooves in the perimeter direction of the water diversion plectrum are different; the infrared transceiver is arranged corresponding to the water diversion plectrum so as to detect the length of each groove and send the length of each groove to the controller, and the controller controls the rotation angle of the water diversion plectrum according to the length of each groove. The shunt valve is simple in structure, the dependence of control of the shunt valve on the precision of components can be effectively reduced, and the control precision of the shunt valve is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a water diversion valve structure, a dishwasher and a control method. Background Art

[0002] In the prior art, most dishwasher water diverter valves are controlled by a synchronous motor and a micro switch combination. The micro switch is triggered as the origin, and then the synchronous motor runs for a period of time to move to a fixed position. However, this method is limited by the precision design of the structure and the fluctuation of the power grid, which causes the speed of the synchronous motor to vary, making the reached position less accurate. Summary of the invention

[0003] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes a water diverter valve structure with a simple structure, which can effectively reduce the dependence of the control of the water diverter valve on the accuracy of components, thereby further improving the accuracy of the water diverter valve control.

[0004] Secondly, the present invention also provides a dishwasher, which has a simple structure and can effectively improve the washing performance of the dishwasher.

[0005] In addition, the present invention also provides a control method for a dishwasher, which is simple and feasible and can realize closed-loop control of the water diversion valve, thereby effectively improving the washing performance of the dishwasher.

[0006] The first objective is achieved through the following technical solutions:

[0007] A water diversion valve structure comprises a valve body, a valve cavity is defined in the valve body, a water inlet and a plurality of water outlets are respectively opened on the valve cavity, and also comprises a driving motor, a water diversion paddle, an infrared transceiver and a controller, wherein the driving motor is transmission-connected with the water diversion paddle, and the water inlet is switchably connected to each single water outlet through the action of the water diversion paddle, and the controller is electrically connected to the driving motor and the infrared transceiver; a plurality of grooves are sequentially spaced along the circumference direction of the water diversion paddle, and the plurality of grooves are arranged one-to-one with the plurality of water outlets, and the lengths of the plurality of grooves in the circumference direction of the water diversion paddle are all different, the infrared transceiver is arranged corresponding to the water diversion paddle to detect the length of each groove and send the length of each groove to the controller, and the controller controls the rotation angle of the water diversion paddle according to the length of each groove.

[0008] In some embodiments, the water diverter paddle is provided with a first groove, a second groove, and a third groove in sequence and at intervals along the circumference thereof, and the lengths of the first groove, the second groove, and the third groove are all different.

[0009] In some embodiments, a water inlet is provided at the water inlet end of the valve cavity, and a first water outlet, a second water outlet, and a third water outlet are respectively provided at the water outlet end of the valve cavity; when the first groove is arranged corresponding to the infrared transceiver, the first water outlet is connected to the water inlet; when the second groove is arranged corresponding to the infrared transceiver, the second water outlet is connected to the water inlet; or when the third groove is arranged corresponding to the infrared transceiver, the third water outlet is connected to the water inlet.

[0010] In some embodiments, the infrared transceiver has an infrared transmitting module and an infrared receiving module, and the infrared transmitting module is arranged corresponding to the infrared receiving module.

[0011] In some embodiments, a white coating is coated on each of the grooves, and a black coating is coated on the water-dividing paddle in areas other than the grooves.

[0012] The above second purpose is achieved through the following technical solutions:

[0013] A dishwasher comprises the dishwasher water diversion valve structure as described in any one of the above embodiments.

[0014] The third objective is achieved through the following technical solutions:

[0015] A method for controlling a dishwasher is applied to the dishwasher as described in the above embodiment, and the method for controlling the dishwasher comprises the following steps:

[0016] Starting the driving motor to drive the water diversion paddle to rotate;

[0017] At the same time, the infrared transceiver is started to transmit an infrared signal and the duration of a single time when the infrared transceiver receives the infrared signal reflected by the water-dividing paddle;

[0018] Acquire the current rotation angle of the water-dividing paddle according to the single duration;

[0019] Continue to activate the infrared transceiver until the water diversion paddle rotates to a preset angle;

[0020] The driving motor is turned off to stop the water diversion paddle from rotating, and the infrared transceiver is turned off at the same time.

[0021] In some embodiments, the method for controlling the dishwasher further includes:

[0022] Obtaining the sum of the duration of each single rotation of the water-dividing paddle;

[0023] It is determined whether the total value exceeds a preset receiving and transmitting time range. If so, it is determined that the operation of the driving motor is abnormal; if not, the driving motor and the infrared transceiver are turned off.

[0024] In some embodiments, the step of determining that the operation of the drive motor is abnormal includes:

[0025] After determining that the operation of the drive motor is abnormal, an abnormality alarm is issued.

[0026] In some implementations, the step of obtaining the current rotation angle of the water-dividing paddle according to the single duration includes:

[0027] Obtaining the current groove length according to the single duration;

[0028] The corresponding rotation angle is obtained according to the current groove length, thereby obtaining the current rotation angle of the water-dividing paddle.

[0029] Compared with the prior art, the present invention has at least the following beneficial effects:

[0030] 1. The water diverter valve structure of the present invention has a simple structure and can effectively reduce the dependence of the control of the water diverter valve on the accuracy of components, thereby further improving the accuracy of the control of the water diverter valve.

[0031] 2. The dishwasher of the present invention has a simple structure and can effectively improve the washing performance of the dishwasher.

[0032] 3. The control method of the dishwasher of the present invention is simple and feasible, and can realize closed-loop control of the water diversion valve, thereby effectively improving the washing performance of the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 is a schematic structural diagram of a water-dividing paddle in Embodiment 1 of the present invention;

[0035] Figure 2 It is a flow chart of the dishwasher control method in the second embodiment of the present invention. DETAILED DESCRIPTION

[0036] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in combination with the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, but not all of the embodiments. The components of the embodiment of the present invention can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the technical solution claimed for protection of the present invention.

[0038] Embodiment 1:

[0039] like Figure 1 As shown, the present embodiment provides a water diversion valve structure, including a valve body, a valve cavity is defined in the valve body, a water inlet and a plurality of water outlets are respectively opened on the valve cavity, and also includes a driving motor, a water diversion paddle 1, an infrared transceiver 2 and a controller, wherein the driving motor is transmission-connected to the water diversion paddle 1, and the water inlet is switchably connected to each single water outlet through the action of the water diversion paddle 1, and the controller is electrically connected to the driving motor and the infrared transceiver 2; a plurality of grooves are sequentially spaced along the circumference direction of the water diversion paddle 1, and the plurality of grooves are arranged one-to-one with the plurality of water outlets, and the lengths of the plurality of grooves in the circumference direction of the water diversion paddle 1 are all different, the infrared transceiver 2 is arranged corresponding to the water diversion paddle 1 to detect the length of each groove and send the length of each groove to the controller, and the controller controls the rotation angle of the water diversion paddle 1 according to the length of each groove.

[0040] In the present embodiment, a valve cavity is defined in the valve body, a water inlet is provided at the water inlet end of the valve cavity, and a plurality of water outlets are provided at the water outlet end of the valve cavity, a driving motor is transmission-connected to the water-dividing paddle 1 so that the driving motor drives the water-dividing paddle 1 to rotate, and the water inlet is switchably connected to a single water outlet through the action of the water-dividing paddle 1, a plurality of grooves are sequentially concavely provided on the water-dividing paddle 1 along its circumference direction, since the positions and widths of the plurality of grooves on the water-dividing paddle 1 are fixed, and the lengths of the plurality of grooves are different, an infrared transceiver 2 is arranged corresponding to the water-dividing paddle 1, and an infrared signal is emitted to the water-dividing paddle 1 through the infrared transceiver 2, and an infrared signal reflected back by the water-dividing paddle 1 is received. signal, so that the infrared transceiver 2 transmits a specific wavelength to the water-dividing paddle 1, and then receives the specific data as a feedback signal of the rotation angle of the water-dividing paddle 1, so that the length data of each groove can be obtained. Since the lengths of the multiple grooves are different, it is possible to quickly obtain which groove of the multiple grooves the current groove length corresponds to, and then obtain the current rotation angle of the water-dividing paddle 1. At the same time, since the multiple grooves are arranged corresponding to the multiple water outlets, the water inlet can be switchably connected to a single water outlet through the action of the water-dividing paddle 1. The structure is simple, and the control of the water-dividing valve can effectively reduce the dependence on the accuracy of components, thereby further improving the accuracy of the water-dividing valve control.

[0041] In this example, the water diversion valve structure is preferably applied to a dishwasher, but is not limited to dishwashers, and can also be applied to other household electrical appliances according to actual needs.

[0042] Furthermore, a first groove 11, a second groove 12 and a third groove 13 are sequentially and spaced apart on the water-dividing paddle 1 along the circumference thereof, and the lengths of the first groove 11, the second groove 12 and the third groove 13 are all different.

[0043] Preferably, a water inlet is provided at the water inlet end of the valve cavity, and a first water outlet, a second water outlet, and a third water outlet are respectively provided at the water outlet end of the valve cavity. When the first groove 11 is arranged corresponding to the infrared transceiver 2, the first water outlet is connected to the water inlet; when the second groove 12 is arranged corresponding to the infrared transceiver 2, the second water outlet is connected to the water inlet; or when the third groove 13 is arranged corresponding to the infrared transceiver 2, the third water outlet is connected to the water inlet.

[0044] Specifically, the infrared transceiver 2 has an infrared transmitting module and an infrared receiving module, and the infrared transmitting module is arranged correspondingly to the infrared receiving module.

[0045] In particular, a white coating is coated on each groove, and a black coating is coated on the non-groove area of ​​the water-dividing paddle 1 .

[0046] In this embodiment, the infrared transceiver 2 has an infrared transmitting module and an infrared receiving module. The infrared transmitting module is arranged corresponding to the infrared receiving module. The infrared transmitting module can send data of a fixed wavelength. The infrared receiving module receives the infrared light signal through the reflection of the water-dividing paddle 1, and identifies the corresponding groove position according to the sending and receiving time, thereby determining the position of the motor operation.

[0047] In the present embodiment, a plurality of grooves are sequentially spaced along the circumference direction of the water-dividing paddle 1, and the plurality of grooves include a first groove 11, a second groove 12, and a third groove 13, and the lengths of the first groove 11, the second groove 12, and the third groove 13 are all different. Since the first groove 11, the second groove 12, and the third groove 13 are recessed on the outer peripheral wall of the water-dividing paddle 1, that is, a certain distance is formed between the bottom walls of the first groove 11, the second groove 12, and the third groove 13 and the outer peripheral wall of the water-dividing paddle 1, the time for the infrared signal emitted by the infrared transmitting module to pass through the outer peripheral wall of the water-dividing paddle 1 and then be reflected on the infrared receiving module is shorter than the time for the infrared signal emitted by the infrared transmitting module to pass through the outer peripheral wall of the water-dividing paddle 1 and then be reflected on the infrared receiving module. The time it takes for the infrared signal to be reflected on the infrared receiving module after passing through any one of the multiple grooves can be determined. In this way, it can be determined that any one of the grooves in the water-dividing paddle 1 is set corresponding to the infrared transceiver 2, and then the current groove length can be obtained by counting the time it takes for the infrared signal to be sent and received in the current groove. The current rotation angle of the water-dividing paddle 1 can be obtained according to which groove among the multiple grooves the current groove length corresponds to, so that the rotation angle of the water-dividing paddle 1 can be accurately controlled, and then the water outlet corresponding to the current groove length is controlled to be connected to the water inlet. In this way, the water inlet can be switchably connected to a single water outlet through the action of the water-dividing paddle 1.

[0048] In this embodiment, when the infrared transceiver 2 determines that the groove corresponding to the current groove length is the first groove 11, that is, the first groove 11 is set corresponding to the infrared transceiver 2, the first water outlet is connected to the water inlet; when the infrared transceiver 2 determines that the groove corresponding to the current groove length is the second groove 12, that is, the second groove 12 is set corresponding to the infrared transceiver 2, the second water outlet is connected to the water inlet; when the infrared transceiver 2 determines that the groove corresponding to the current groove length is the third groove 13, that is, the third groove 13 is set corresponding to the infrared transceiver 2, the third water outlet is connected to the water inlet. In addition, since the first water outlet, the second water outlet, and the third water outlet are respectively opened on the water outlet end of the valve cavity, the water path of the dishwasher is divided into three paths, so the water inlet can be controlled to switchably connect to a single water outlet by rotating the water diversion paddle 1, that is, the washing pump of the dishwasher is controlled to pump water to different water paths, thereby achieving the effect of washing by separate water paths.

[0049] In this embodiment, three groove positions and lengths are set to be different to distinguish three different locations, that is, to distinguish 13 different rotation angles of the water-dividing paddle 1. Since the positions and widths of the multiple grooves are fixed, the current angular position of the water-dividing paddle 1 can be determined by the position of the previous groove. When the next groove appears, the water-dividing paddle 1 can be rotated to the specified position by stopping in time. Since infrared rays will be absorbed by black light, the water-dividing paddle 1 is coated with a white coating at the groove position to effectively reflect the infrared light. At the same time, the water-dividing paddle 1 is coated with a black coating at the non-groove position to avoid the reflection of infrared light, thereby further improving the stability of product operation.

[0050] Embodiment 2:

[0051] like Figure 2 As shown, the present embodiment provides a control method for a dishwasher, which is applied to the water diversion valve structure described in the first embodiment. Since the positions and widths of the plurality of grooves on the water diversion paddle are fixed, and the lengths of the plurality of grooves are different, the infrared transceiver is arranged corresponding to the water diversion paddle. The infrared transceiver transmits a specific wavelength to the water diversion paddle, and then receives specific data as a feedback signal of the rotation angle of the water diversion paddle, so that the length data of each groove can be obtained. Since the lengths of the plurality of grooves are different, the single duration of the infrared signal reflected by the water diversion paddle received by the infrared transceiver in each groove can be quickly obtained. Since the single duration of the infrared signal reflected by the water diversion paddle in each groove is different, the rotation angle of the water diversion paddle corresponding to the single duration is obtained. At the same time, since the plurality of grooves are arranged corresponding to the plurality of water outlets, the water diversion paddle is rotated to a specified position, and then the water inlet is switchably connected to a single water outlet through the action of the water diversion paddle. The method is simple and feasible, and the control of the water diversion valve can be realized in a closed-loop control, thereby effectively improving the washing performance of the dishwasher.

[0052] The control method of the dishwasher in this embodiment includes the following steps:

[0053] Step S101, starting the driving motor to drive the water diversion paddle to rotate.

[0054] Step S102, simultaneously starting the infrared transceiver to transmit an infrared signal and recording a single duration of the infrared signal reflected by the water-dividing paddle being received by the infrared transceiver.

[0055] Step S103, obtaining the current rotation angle of the water-dividing paddle according to the single duration.

[0056] Specifically, the step of obtaining the current rotation angle of the water-dividing paddle according to the single duration includes:

[0057] Get the current groove length according to the single duration;

[0058] The corresponding rotation angle is obtained according to the current groove length, thereby obtaining the current rotation angle of the water-dividing paddle.

[0059] Step S104, continue to start the infrared transceiver until the water diversion paddle rotates to a preset angle.

[0060] Step S105, turning off the driving motor to stop the water diverting paddle from rotating, and turning off the infrared transceiver at the same time.

[0061] In this embodiment, the driving motor of the water diverter valve drives the water diverter paddle to rotate synchronously when it is working, and the positions are distinguished by providing three grooves of different lengths. Since a white coating is applied on each groove, the water diverter paddle 1 is coated with a black coating in the non-groove area, so that infrared rays will be absorbed by black light. Therefore, the water diverter paddle 1 is coated with a white coating at the position of the groove to effectively reflect the infrared light. At the same time, the water diverter paddle 1 is coated with a black coating at the non-groove position to avoid the infrared light from being reflected. In addition, since the positions of the three grooves are fixed, after the infrared transceiver transmits the infrared signal, until the infrared transceiver receives the infrared signal reflected by the water diverter paddle, Then, recording and timing start until the infrared transceiver stops receiving the infrared signal reflected by the water-dividing paddle, then the single duration of the infrared signal reflected by the water-dividing paddle is obtained, and the corresponding groove length is obtained according to the current single duration, so as to obtain the current groove length, and the corresponding rotation angle is obtained according to the current groove length, so as to obtain the current rotation angle of the water-dividing paddle, and then, the next time the infrared signal is received again, it can be determined whether the water-dividing paddle has reached the specified position, and the drive motor is controlled to stop working, so that the water-dividing paddle can accurately reach the specified position, so that the water inlet can be switchably connected to a single water outlet through the action of the water-dividing paddle.

[0062] In this embodiment, the control method of the dishwasher further includes the following steps:

[0063] Obtain the sum of the duration of each single rotation of the water-dividing paddle;

[0064] It is determined whether the total value exceeds the preset receiving and sending time range. If so, it is determined that the operation of the drive motor is abnormal; if not, the drive motor and the infrared transceiver are turned off.

[0065] Furthermore, the steps after determining that the operation of the drive motor is abnormal include:

[0066] After determining that the drive motor is working abnormally, an abnormal alarm is issued.

[0067] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A water diversion valve structure, comprising a valve body, a valve cavity is defined in the valve body, a water inlet and a plurality of water outlets are respectively opened on the valve cavity, characterized in that: The invention also comprises a driving motor, a water diverter paddle (1), an infrared transceiver (2) and a controller, wherein the driving motor is in transmission connection with the water diverter paddle (1), and the water inlet is switchably connected to each single water outlet through the action of the water diverter paddle (1), and the controller is electrically connected to the driving motor and the infrared transceiver (2); a plurality of grooves are sequentially arranged at intervals along the circumference direction of the water diverter paddle (1), and the plurality of grooves are arranged in a one-to-one correspondence with the plurality of water outlets, and the lengths of the plurality of grooves in the circumference direction of the water diverter paddle (1) are all different; the infrared transceiver (2) is arranged corresponding to the water diverter paddle (1) to detect the length of each groove and send the length of each groove to the controller, and the controller controls the rotation angle of the water diverter paddle (1) according to the length of each groove.

2. A water diversion valve structure according to claim 1, characterized in that: A first groove (11), a second groove (12), and a third groove (13) are sequentially and spaced apart on the water-dividing paddle (1) along its circumference direction, and the lengths of the first groove (11), the second groove (12), and the third groove (13) are all different.

3. A water diversion valve structure according to claim 2, characterized in that: A water inlet is provided at the water inlet end of the valve cavity, and a first water outlet, a second water outlet, and a third water outlet are respectively provided at the water outlet end of the valve cavity. When the first groove (11) is arranged corresponding to the infrared transceiver (2), the first water outlet is connected to the water inlet; when the second groove (12) is arranged corresponding to the infrared transceiver (2), the second water outlet is connected to the water inlet; or when the third groove (13) is arranged corresponding to the infrared transceiver (2), the third water outlet is connected to the water inlet.

4. A water diversion valve structure according to claim 1, characterized in that: The infrared transceiver (2) comprises an infrared transmitting module and an infrared receiving module, and the infrared transmitting module is arranged corresponding to the infrared receiving module.

5. A water diversion valve structure according to claim 1, characterized in that: A white coating is coated on each of the grooves, and a black coating is coated on the water-dividing paddle (1) in areas other than the grooves.

6. A dishwasher, characterized in that: It comprises the dishwasher water diversion valve structure as described in any one of claims 1 to 5.

7. A method for controlling a dishwasher, characterized in that: Applied to the dishwasher according to claim 6, the control method of the dishwasher comprises the following steps: Starting the driving motor to drive the water diversion paddle to rotate; At the same time, the infrared transceiver is started to transmit an infrared signal and the duration of a single time when the infrared transceiver receives the infrared signal reflected by the water-dividing paddle; Acquire the current rotation angle of the water-dividing paddle according to the single duration; Continue to activate the infrared transceiver until the water diversion paddle rotates to a preset angle; The driving motor is turned off to stop the water diversion paddle from rotating, and the infrared transceiver is turned off at the same time.

8. A method for controlling a dishwasher according to claim 7, characterized in that: The control method of the dishwasher further includes: Obtaining the sum of the duration of each single rotation of the water-dividing paddle; It is determined whether the total value exceeds a preset receiving and transmitting time range. If so, it is determined that the operation of the driving motor is abnormal; if not, the driving motor and the infrared transceiver are turned off.

9. A water diversion valve structure according to claim 8, characterized in that: The step of determining that the driving motor is abnormal includes: After determining that the operation of the drive motor is abnormal, an abnormality alarm is issued.

10. A water diversion valve structure according to claim 7, characterized in that: The step of obtaining the current rotation angle of the water-dividing paddle according to the single duration includes: Obtaining the current groove length according to the single duration; The corresponding rotation angle is obtained according to the current groove length, thereby obtaining the current rotation angle of the water-dividing paddle.

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