Dish-washing machine control device and dish-washing machine

Abstract

The utility model discloses a dish-washing machine and a control device thereof, the dish-washing machine comprises a driving motor and a water pump, the control device is electrically connected with a power panel in the dish-washing machine, and the control device comprises a door body state detection device, a motor power supply device, a voltage dividing device and a voltage reducing device; the door body state detection device is electrically connected with the motor power supply device, and the door body state detection device is in communication connection with the voltage dividing device; the voltage dividing device is electrically connected with the motor power supply device and the voltage reducing device respectively; the voltage reduction device is electrically connected with the driving motor so as to supply power to the driving motor; and the driving motor is electrically connected with the water pump so as to control the working state of the water pump. Power is supplied to the driving motor through the control device of the dish-washing machine, so that the function of closing the water pump when the dish-washing machine is opened is achieved, user interaction experience is not affected, and the problems of safety and interactivity when a user opens the dish-washing machine door are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a dishwasher control device and the dishwasher. Background Art

[0002] A dishwasher is a device that automatically washes dishes. During operation, the water pump system runs at high speed, spraying water into the dishwasher cavity through multiple water paths through the spray arm. The heating system continuously heats the water inside the dishwasher (generally heated to 70-80°C). If the door is opened manually during the dishwashing process, water will splash out, posing a safety hazard. Therefore, the washing pump needs to be controlled to shut down at the moment the door is opened, and resume operation after the door is closed.

[0003] Existing technology avoids the risk of electric shock by disconnecting the live wire. However, dishwashers are designed with separate high and low voltages. Accessible areas are at safe low voltage, and all accessible metal parts are grounded for double insulation. Disconnecting the live wire de-energizes the entire dishwasher, depriving users of the interactive experience when the door is open. Therefore, a safe and reliable dishwasher control device is urgently needed to address this issue. Utility Model Content

[0004] The utility model provides a control device for a dishwasher and a dishwasher, which supplies power to a driving motor through a door state detection device, a motor power supply device, a voltage dividing device and a voltage reducing device, so as to realize the function of shutting off the water pump when the dishwasher door is open, thereby solving the safety and interactivity problems of users opening the dishwasher door.

[0005] According to one aspect of the present invention, a control device for a dishwasher is provided.

[0006] The dishwasher includes a driving motor and a water pump. The control device is electrically connected to a power board inside the dishwasher. The control device includes a door status detection device, a motor power supply device, a voltage dividing device, and a voltage reducing device.

[0007] The door state detection device is electrically connected to the motor power supply device, and the door state detection device is communicatively connected to the voltage dividing device;

[0008] The voltage dividing device is electrically connected to the motor power supply device and the voltage reducing device respectively;

[0009] The voltage reduction device is electrically connected to the drive motor to supply power to the drive motor;

[0010] The driving motor is electrically connected to the water pump to control the working state of the water pump.

[0011] Furthermore, the door state detection device includes a micro switch, a first interface and a second interface.

[0012] The micro switch is electrically connected to the first interface and the second interface respectively, and the first interface is electrically connected to the second interface through the micro switch;

[0013] The first interface is electrically connected to the motor power supply device, and the door state detection device is electrically connected to the motor power supply device through the first interface.

[0014] Furthermore, the door state detection device further includes a first voltage dividing module and a door control detection unit.

[0015] The first voltage dividing module is electrically connected to the second interface and the gate detection unit respectively.

[0016] Furthermore, the door state detection device further includes a signal output terminal, and the voltage divider device includes a signal receiving terminal and a third interface.

[0017] The signal output terminal is electrically connected to the gate detection unit;

[0018] The signal receiving terminal is communicatively connected to the signal output terminal, and the voltage dividing device is communicatively connected to the signal output terminal via the signal receiving terminal;

[0019] The third interface is electrically connected to the second interface, and the voltage divider is electrically connected to the motor power supply device through the third interface.

[0020] Furthermore, the voltage dividing device further includes a fourth interface and a second voltage dividing module.

[0021] The fourth interface is electrically connected to the second voltage divider module, and the fourth interface is communicatively connected to the third interface.

[0022] Furthermore, the voltage dividing device further includes a first filtering module,

[0023] The input end of the first filtering module is electrically connected to the output end of the second voltage dividing module, so that the first filtering module receives the signal output by the output end of the second voltage dividing module.

[0024] Furthermore, the pressure reduction device includes a pressure reduction module.

[0025] The input end of the voltage reduction module is electrically connected to the output end of the first filtering module, so that the voltage reduction module receives the signal output by the output end of the first filtering module.

[0026] Furthermore, the voltage reduction device further includes a second filtering module.

[0027] The input end of the second filter module is electrically connected to the output end of the step-down module, so that the second filter module performs filtering processing on the signal output from the output end of the step-down module.

[0028] Furthermore, the input end of the driving motor is electrically connected to the output end of the second filtering module, so that the driving motor controls the water pump.

[0029] On the other hand, the present invention further provides a dishwasher, comprising a housing, a power supply board, a drive motor, a water pump, and the control device of any one of the above dishwashers.

[0030] The power board is arranged at a first preset position inside the housing;

[0031] The driving motor and the control device are integrated on the power board, and the control device is electrically connected to the driving motor and the power board respectively;

[0032] The water pump is arranged at a second preset position of the housing, and the water pump is communicated with the cavity of the dishwasher, and the water pump is electrically connected to the driving motor.

[0033] The beneficial effects of the utility model are:

[0034] The utility model provides a control device for a dishwasher, comprising a drive motor and a water pump. The control device is electrically connected to a power supply board inside the dishwasher and includes a door status detection device, a motor power supply device, a voltage divider, and a voltage reducing device. The door status detection device is electrically connected to the motor power supply device, and the door status detection device is communicatively connected to the voltage divider device. The voltage divider device is electrically connected to the motor power supply device and the voltage reducing device, respectively. The voltage reducing device is electrically connected to the drive motor to supply power to the drive motor. The drive motor is electrically connected to the water pump to control the working state of the water pump. The drive motor is powered by the door status detection device, the motor power supply device, the voltage divider, and the voltage reducing device, so that the dishwasher can turn off the water pump when the door is open, without affecting the user's interactive experience. This solves the safety and interactivity issues of users opening the dishwasher door. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 This is a schematic block diagram of the structure of a control device for a dishwasher provided by an embodiment of the present utility model;

[0037] Figure 2 This is a circuit diagram of a control device for a dishwasher provided by an embodiment of the utility model;

[0038] Among them, the corresponding reference numerals in the figure are: 1-driving motor, 2-water pump, 3-door state detection device, 4-motor power supply device, 5-voltage dividing device, 6-voltage reducing device. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] A dishwasher is a device that automatically washes dishes. Spray-type dishwashers use high-pressure water to spray upwards, downwards, and leftwards to achieve the best cleaning effect. During operation, the water pump system runs at high speed, spraying water into the dishwasher cavity through multiple water paths through the spray arm. The heating system continuously heats the water inside the dishwasher, generally to 70-80°C. If the door is opened manually during the dishwashing process, water will splash out, posing a safety hazard. Therefore, the washing pump needs to be controlled to shut off at the moment the door is opened, and resume operation after the door is closed. Usually, the risk of electric shock is avoided by disconnecting the live wire after opening the door, but disconnecting the live wire also completely cuts off the user's interaction with the dishwasher.

[0041] like Figure 1 As shown, the embodiment of the present utility model discloses a control device for a dishwasher, the dishwasher comprising a drive motor 1 and a water pump 2, the control device being electrically connected to a power board inside the dishwasher, the control device comprising a door state detection device 3, a motor power supply device 4, a voltage dividing device 5 and a voltage reducing device 6,

[0042] The door state detection device 3 is electrically connected to the motor power supply device 4, and the door state detection device 3 is communicatively connected to the voltage dividing device 5;

[0043] The voltage dividing device 5 is electrically connected to the motor power supply device 4 and the voltage reducing device 6 respectively;

[0044] The voltage reducing device 6 is electrically connected to the driving motor 1 to supply power to the driving motor 1;

[0045] The driving motor 1 is electrically connected to the water pump 2 to control the working state of the water pump 2 .

[0046] Optionally, the driving motor 1 is electrically connected to the water pump 2 so that the water pump 2 rotates following the driving motor.

[0047] Optionally, the water pump 2 pressurizes the water and sprays it out from the spray arm, so that the spray arm sprays a hot water flow with a certain pressure in three directions to spray and rinse the tableware.

[0048] Optionally, the control device may be integrated on a power supply board inside the dishwasher to improve the integration of the device.

[0049] Optionally, the door state detection device 3 includes a micro switch, a first interface and a second interface.

[0050] The micro switch is electrically connected to the first interface and the second interface respectively, and the first interface is electrically connected to the second interface through the micro switch;

[0051] The first interface is electrically connected to the motor power supply device 4 , and the door state detection device 3 is electrically connected to the motor power supply device 4 through the first interface.

[0052] Optionally, the micro switch is a switch in which an external mechanical force acts on an action reed through a transmission element, causing the fixed contact and the moving contact at its end to be quickly connected or disconnected, and is used in devices that require frequent circuit switching.

[0053] Optionally, when the micro switch is closed, the first interface and the second interface are electrically connected successfully. Figure 2 As shown, when the dishwasher door is closed, the micro switch is automatically closed, so that pins 1 and 3 of terminal CN1 are connected, wherein pin 1 of terminal CN1 is the first interface, and pin 3 of terminal CN1 is the second interface.

[0054] Optionally, the voltage dividing device 5 includes an optical coupler PC1, such as Figure 2 As shown, when the micro switch is closed, pins 1 and 3 at terminal CN1 are connected, and the +5V voltage is limited to the input end of the optocoupler PC1 through the resistor R3.

[0055] Optionally, when the micro switch is turned on, the first interface and the second interface are electrically disconnected. Figure 2 As shown, when the dishwasher door is closed, the micro switch is automatically closed, disconnecting pins 1 and 3 at terminal CN1.

[0056] In this implementation, the door opening and closing status is reflected by a micro switch, which has a simple structure and high sensitivity, thereby reducing costs.

[0057] Optionally, the door state detection device 3 further includes a first voltage dividing module and a door control detection unit.

[0058] The first voltage dividing module is electrically connected to the second interface and the gate detection unit respectively.

[0059] Alternatively, as Figure 2 As shown, the first voltage divider module is composed of a resistor R5 and a resistor R6.

[0060] Alternatively, as Figure 2 As shown, the gate control detection unit includes a transistor Q2 and a gate control MCU (Microcontroller Unit, microprocessor).

[0061] Alternatively, as Figure 2 As shown, when the micro switch is closed, pins 1 and 3 of terminal CN1 are turned on, and the high level +5V of pin 3 of CN1 terminal is divided by resistors R5 and R6 to reach the turn-on voltage of transistor Q2. At this time, "MCU gate detection" is at a low level 0.

[0062] Alternatively, as Figure 2 As shown in the figure, when "MCU gate detection" is at low level 0, the gate control MCU reads the low level data and determines that the dishwasher door is in the closed state. At the same time, the gate control MCU issues the instruction "MCU output" to be low level 0.

[0063] Alternatively, as Figure 2 As shown, when the micro switch is turned on, pins 1 and 3 of terminal CN1 are disconnected, pin 3 of CN1 is grounded to GND by resistors R5 and R6, pin 3 of CN1 is directly pulled down to level 0, pin 1 of transistor Q2 is also at low level 0, transistor Q2 is not conducting, and the "MCU gate detection" signal is pulled up to +5V through resistors R4 and R7. At this time, "MCU gate detection" is at high level 1.

[0064] Alternatively, as Figure 2 As shown, when "MCU gate detection" is at high level 1, the gate control MCU reads high level data and determines that the dishwasher door is in the open state. At the same time, the gate control MCU issues an instruction "MCU output" to be high level 1.

[0065] In this embodiment, the door status information is transmitted through the door control detection unit, thereby improving the accuracy of the dishwasher door status detection.

[0066] Optionally, the door state detection device 3 further includes a signal output terminal, and the voltage divider 5 includes a signal receiving terminal and a third interface.

[0067] The signal output terminal is electrically connected to the gate detection unit;

[0068] The signal receiving terminal is communicatively connected to the signal output terminal, and the voltage dividing device 5 is communicatively connected to the signal output terminal via the signal receiving terminal;

[0069] The third interface is electrically connected to the second interface, and the voltage divider 5 is electrically connected to the motor power supply device 4 via the third interface.

[0070] Alternatively, as Figure 2 As shown, the gate control MCU issues the instruction "MCU output" through the signal output terminal. Specifically, when the micro switch is closed, "MCU output" is a low level 0; when the micro switch is open, "MCU output" is a high level 1.

[0071] Optionally, the voltage dividing device 5 is communicatively connected to the signal output terminal via the signal receiving terminal.

[0072] Alternatively, as Figure 2 As shown, the voltage dividing device 5 includes an optical coupler PC1 , and the voltage dividing device 5 receives the instruction “MCU output” issued by the gate control MCU through the optical coupler PC1 .

[0073] Alternatively, as Figure 2 As shown, the gate control MCU issues the instruction "MCU output" low level 0, so that current flows through the input end of the optocoupler PC1, and stimulates the output end of the optocoupler to conduct to MGND (strong ground terminal).

[0074] Alternatively, as Figure 2 As shown, the door control MCU detects a high level 1 and believes that the dishwasher door has been opened. It outputs a signal "MCU output" of a high level 1, causing the negative end of the diode of the optocoupler PC1 to be a high level 1 and the positive end to be a low level 0. The optocoupler PC1 is cut off and does not output a signal. The output end of the optocoupler is disconnected from the MGND (strong ground terminal).

[0075] In this embodiment, the motor power supply end and the low-voltage gate control MCU are isolated by an optical coupler, which is safe and reliable and has a simple circuit.

[0076] Optionally, the voltage dividing device 5 further includes a fourth interface and a second voltage dividing module.

[0077] The fourth interface is electrically connected to the second voltage divider module, and the fourth interface is communicatively connected to the third interface.

[0078] Alternatively, as Figure 2 As shown, the second voltage divider module is composed of a resistor R1 and a resistor R2. Specifically, the M18V (power supply voltage) voltage is divided by the resistors R1 and R2.

[0079] Alternatively, as Figure 2 As shown, the gate-controlled MCU issues the command "MCU output" low level 0, causing current to flow through the input of the optocoupler PC1, which in turn turns on the optocoupler output terminal MGND. At this time, the M18V voltage is divided by resistors R1 and R2, reaching a voltage that turns on transistor Q1. Specifically, the M18V voltage is the output voltage of the switching power supply transformer.

[0080] Alternatively, as Figure 2 As shown, the gate-controlled MCU issues the instruction "MCU output" high level 1, so that the negative end of the diode of the optocoupler PC1 is high level 1 and the positive end is low level 0. The optocoupler PC1 is cut off and no signal is output. The output end of the optocoupler is disconnected from MGND. The voltage of pin 1 of the transistor Q1 is pulled up to M18V through the resistor R1. The potentials of pins 1 and 2 of the transistor Q1 are equal, and the transistor is in the cut-off state.

[0081] In this embodiment, the voltage dividing device is used to perform voltage dividing processing, thereby improving the stability and safety of the circuit.

[0082] Optionally, the voltage dividing device 5 further includes a first filtering module,

[0083] The input end of the first filtering module is electrically connected to the output end of the second voltage dividing module, so that the first filtering module receives the signal output by the output end of the second voltage dividing module.

[0084] Alternatively, as Figure 2 As shown, the first filtering module is composed of capacitor EC1 and capacitor C1.

[0085] Optionally, the pressure reducing device 6 includes a pressure reducing module.

[0086] The input end of the voltage reduction module 6 is electrically connected to the output end of the first filtering module, so that the voltage reduction module 6 receives the signal output by the output end of the first filtering module.

[0087] Alternatively, as Figure 2 As shown, the buck module is a buck chip U1.

[0088] Optionally, the voltage reduction device 6 further includes a second filtering module.

[0089] The input end of the second filtering module is electrically connected to the output end of the voltage reduction module 6 , so that the second filtering module performs filtering processing on the signal output from the output end of the voltage reduction module 6 .

[0090] Alternatively, as Figure 2 As shown, the second filtering module is composed of capacitor C2 and capacitor EC2.

[0091] Alternatively, as Figure 2 As shown, the transistor Q1 is turned on, and the M18V passes through the filter capacitors EC1 and C1 and reaches the input end of the buck chip U1. After being stepped down by the chip U1, the output is 15V. The 15V is then filtered by C2 and EC2 and reaches the IPM module U2 that controls the motor M1, so that the IPM module U2 has a normal 15V power supply and meets the conditions for driving the motor.

[0092] Alternatively, as Figure 2 As shown, the transistor is in the cut-off state, and there is no voltage at the input end of the step-down chip U1, that is, there is no 15V voltage at the output end. The IPM module of the drive motor has no power supply, and the dishwasher water pump stops rotating immediately, realizing the function of stopping the water pump when the door is opened.

[0093] In this embodiment, interference signals in the signal transmission process are filtered out through the processing of the voltage divider device and the pressure reducing device, thereby improving the accuracy of the signal and further improving the control accuracy of the water pump.

[0094] Optionally, an input end of the driving motor 1 is electrically connected to an output end of the second filtering module, so that the driving motor 1 controls the water pump 2 .

[0095] Alternatively, as Figure 2 As shown, the drive motor 1 includes an IPM (Intelligent Power Module), the IPM is U2, and the output end of the second filter module is electrically connected to the input end of U2, so that U2 has a normal 15V power supply.

[0096] Optionally, when the IPM is powered by 15V, the condition for driving the drive motor 1 is met; when the IPM is not powered, the condition for driving the drive motor 1 is not met.

[0097] Optionally, the drive motor 1 controls the water pump 2. When the IPM is powered by 15V, the drive motor 1 is driven to control the water pump 2 to control the rotation of the water pump; when the IPM is not powered, the drive motor 1 controls the water pump 2 to stop rotating, thereby realizing the function of stopping the water pump when the door is opened.

[0098] In this embodiment, the working state of the water pump is controlled by powering the drive motor, thereby realizing the function of stopping the water pump when the door is opened, thereby improving the safety and reliability of the dishwasher during use.

[0099] An embodiment of the present utility model also provides a control method for a dishwasher, when the door status detection device detects that the door of the dishwasher is closed, the motor power supply device is connected to the power supply, and the driving motor is powered by the voltage divider and the voltage reducing device to control the rotation of the water pump; when the door status detection device detects that the door of the dishwasher is open, the motor power supply device is disconnected from the power supply, and the power supply to the driving motor is disconnected to control the water pump to stop rotating, thereby realizing the function of stopping the water pump when the door is opened.

[0100] The present invention also discloses a dishwasher, which includes a housing, a power supply board, a drive motor, a water pump, and a control device for the dishwasher as described above.

[0101] The power board is arranged at a first preset position inside the housing;

[0102] The control device is electrically connected to the drive motor 1 and the power board respectively;

[0103] The water pump 2 is disposed at a second preset position of the housing, and the water pump 2 is communicated with the cavity of the dishwasher, and the water pump 2 is electrically connected to the driving motor 1 .

[0104] Optionally, the drive motor 1 and the control device are integrated on the power board.

[0105] The above-mentioned embodiment of the present utility model has the following beneficial effects: a control device for a dishwasher, the dishwasher including a drive motor and a water pump, the control device being electrically connected to a power board inside the dishwasher, the control device including a door status detection device, a motor power supply device, a voltage divider device, and a voltage reducing device; the door status detection device being electrically connected to the motor power supply device, the door status detection device being communicatively connected to the voltage divider device; the voltage divider device being electrically connected to the motor power supply device and the voltage reducing device, respectively; the voltage reducing device being electrically connected to the drive motor to supply power to the drive motor; and the drive motor being electrically connected to the water pump to control the working state of the water pump. The drive motor is powered by the door status detection device, the motor power supply device, the voltage divider device, and the voltage reducing device, so as to realize the function of turning off the water pump when the dishwasher door is open, while not affecting the user's interactive experience, thereby solving the safety and interactivity issues of users opening the dishwasher door.

[0106] In this utility model, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal connection between two components, or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0107] It should be noted that the order of the above embodiments of the present invention is for descriptive purposes only and does not represent the superiority or inferiority of the embodiments. Moreover, the above description describes specific embodiments, and other embodiments are also within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in the order of different embodiments and can achieve the expected results. In addition, the processes depicted in the drawings do not necessarily require a specific order or a connection order to achieve the desired results. In some embodiments, multi-tasking parallel processing is also possible or may be advantageous.

[0108] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. The key points of each embodiment are the differences from other embodiments.

[0109] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A control device for a dishwasher, characterized in that: The dishwasher comprises a driving motor (1) and a water pump (2); the control device is electrically connected to a power supply board inside the dishwasher; the control device comprises a door state detection device (3), a motor power supply device (4), a voltage dividing device (5) and a voltage reducing device (6); The door state detection device (3) is electrically connected to the motor power supply device (4), and the door state detection device (3) is communicatively connected to the voltage dividing device (5); The voltage dividing device (5) is electrically connected to the motor power supply device (4) and the voltage reducing device (6) respectively; The voltage reduction device (6) is electrically connected to the drive motor (1) to supply power to the drive motor (1); The driving motor (1) is electrically connected to the water pump (2) to control the working state of the water pump (2).

2. The control device of the dishwasher according to claim 1, characterized in that: The door state detection device (3) comprises a micro switch, a first interface and a second interface, The micro switch is electrically connected to the first interface and the second interface respectively, and the first interface is electrically connected to the second interface through the micro switch; The first interface is electrically connected to the motor power supply device (4), and the door state detection device (3) is electrically connected to the motor power supply device (4) via the first interface.

3. The control device of the dishwasher according to claim 2, characterized in that: The door state detection device (3) further comprises a first voltage dividing module and a door control detection unit. The first voltage dividing module is electrically connected to the second interface and the gate detection unit respectively.

4. The control device of the dishwasher according to claim 3, characterized in that: The door state detection device (3) further includes a signal output terminal, and the voltage dividing device (5) includes a signal receiving terminal and a third interface. The signal output terminal is electrically connected to the gate detection unit; The signal receiving terminal is communicatively connected to the signal output terminal, and the voltage dividing device (5) is communicatively connected to the signal output terminal via the signal receiving terminal; The third interface is electrically connected to the second interface, and the voltage dividing device (5) is electrically connected to the motor power supply device (4) via the third interface.

5. The control device of the dishwasher according to claim 4, characterized in that: The voltage dividing device (5) further comprises a fourth interface and a second voltage dividing module, The fourth interface is electrically connected to the second voltage divider module, and the fourth interface is communicatively connected to the third interface.

6. The control device of the dishwasher according to claim 5, characterized in that: The voltage dividing device (5) further comprises a first filtering module, The input end of the first filtering module is electrically connected to the output end of the second voltage dividing module, so that the first filtering module receives the signal output by the output end of the second voltage dividing module.

7. The control device of the dishwasher according to claim 6, characterized in that: The pressure reduction device (6) comprises a pressure reduction module, The input end of the voltage reduction module (6) is electrically connected to the output end of the first filtering module, so that the voltage reduction module (6) receives the signal output by the output end of the first filtering module.

8. The control device of the dishwasher according to claim 7, characterized in that: The voltage reduction device (6) further comprises a second filtering module, The input end of the second filter module is electrically connected to the output end of the voltage reduction module (6), so that the second filter module performs filtering processing on the signal output from the output end of the voltage reduction module (6).

9. The control device of the dishwasher according to claim 8, characterized in that: The input end of the drive motor (1) is electrically connected to the output end of the second filter module, so that the drive motor (1) controls the water pump (2).

10. A dishwasher, characterized in that: The dishwasher comprises a housing, a power board, a driving motor, a water pump, and a control device for the dishwasher according to any one of claims 1 to 9. The power board is arranged at a first preset position inside the housing; The control device is electrically connected to the drive motor (1) and the power board respectively; The water pump (2) is arranged at a second preset position of the housing, and the water pump (2) is communicated with the cavity of the dishwasher, and the water pump (2) is electrically connected to the drive motor (1).

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