Water pressure control method and apparatus for water jet outlet of dish-washing machine, and dish-washing machine

Abstract

A water pressure control method and apparatus for a water jet outlet (105) of a dish-washing machine (100), and a dish-washing machine (100). A controller (101) of the dish-washing machine (100) acquires water jet pressure at the water jet outlet (105) of a washing tube (104); when the difference between the water jet pressure at the water jet outlet (105) and a standard water jet pressure associated with a target washing mode is greater than a set difference threshold value, adjusting operating parameters of a driving electric motor (102) on the basis of the difference; and returning to execute the step of controlling the driving electric motor (102) to drive a washing water pump (103) to suck water outside a washing cavity (106) into the washing tube (104), and jet the water from the water jet outlet (105) until the difference between the water jet pressure at the water jet outlet (105) and the standard water jet pressure is not greater than the difference threshold value.

Description

Method and device for controlling water pressure of water spray port of dishwasher and dishwasher

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application No. 202410374343.8 filed on March 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of dishwashers, and in particular to a method and device for controlling the water pressure of a water spray port of a dishwasher, and the dishwasher. Background Art

[0004] With the advancement of technology, dishwashers have become ubiquitous, bringing convenience to people's lives. When washing dishes, dishwashers control the water spray from the dishwasher's nozzles according to different wash modes to rinse the dishes. Different wash modes correspond to different nozzle pressures, and each wash mode requires a constant nozzle pressure.

[0005] Summary of the Invention

[0006] By utilizing one or more embodiments of the present disclosure, the problem of blockage of the water circulation pipeline of the dishwasher in the related art is solved, which causes the flushing pressure of the dishwasher's water nozzle to be unstable when spraying water, resulting in incomplete cleaning of the dishes.

[0007] In a first aspect, the present disclosure provides a method for controlling the water pressure of a water spray outlet of a dishwasher, wherein the dishwasher includes a controller, a drive motor, and a washing chamber, wherein the controller is electrically connected to the drive motor, a washing pipe is provided in the washing chamber, a washing water pump is provided outside the washing chamber, the drive motor is used to drive the washing water pump to operate, the washing water pump is connected to the washing pipe, and the washing pipe is provided with a water spray outlet, and the method includes: in a target washing mode, the controller controls the drive motor to drive the washing water pump to draw water outside the washing chamber into the washing pipe and spray it out from the water spray outlet; the controller obtains the water pressure of the water spray outlet of the washing pipe; when the difference between the water pressure of the water spray outlet and the standard water pressure associated with the target washing mode is greater than a set difference threshold, the controller adjusts the operating parameters of the drive motor according to the difference; and until the difference between the water pressure of the water spray outlet and the standard water pressure is no greater than the difference threshold.

[0008] In one possible embodiment, the controller determines the water spray pressure of the water spray outlet of the washing pipe based on the operating parameters of the driving motor, including: the controller searches for the water spray pressure of the water spray outlet of the washing pipe from a pre-stored relationship table based on the operating parameters of the driving motor.

[0009] In a possible embodiment, the operating parameters of the drive motor include the speed of the drive motor and the current flowing through the drive motor. The controller searches the pre-stored relationship table for the water spray pressure of the water spray outlet of the washing pipe based on the operating parameters of the drive motor, including: searching the pre-stored relationship table for the water spray pressure of the water spray outlet of the washing pipe that has a corresponding relationship with the speed of the drive motor and the current flowing through the drive motor.

[0010] In one possible embodiment, a first water pressure sensor is provided at the water inlet or outlet of the washing water pump. After controlling the driving motor to drive the washing water pump to draw water outside the washing chamber into the washing pipe and spray it out from the water spray port, the method provided in the present application also includes: the controller receives the water pump pressure flowing through the washing water pump transmitted from the first water pressure sensor; the controller determines the real-time water spray pressure of the water spray port of the washing pipe according to the water pump pressure of the washing water pump and the set adjustment coefficient when the time length between the current moment and the moment of the last correction of the pre-recorded relationship table reaches a preset time length; and the controller corrects the water spray pressure of the water spray port corresponding to the operating parameters of the driving motor in the relationship table according to the determined real-time water spray pressure of the water spray port.

[0011] In one possible embodiment, the controller determines the water pressure of the water outlet of the washing pipe based on the operating parameters of the drive motor, including: the controller inputting the operating parameters of the drive motor into a pre-trained water pressure determination model, so that the water pressure determination model outputs the water pressure of the water outlet of the washing pipe. The water pressure determination model is trained by inputting a training sample set consisting of multiple historical drive motor operating parameters and corresponding historical water pressures of the water outlet of the washing pipe into an initial model to be trained.

[0012] In a possible embodiment, the controller obtains the water pressure of the water outlet of the washing pipe, including: the controller obtains the operating parameters of the drive motor; the controller determines the water pressure of the water outlet of the washing pipe according to the operating parameters of the drive motor.

[0013] In a second aspect, the present disclosure also provides a method for controlling the water pressure of a water spray outlet of a dishwasher. The dishwasher includes a controller, a drive motor, and a washing chamber. The controller is electrically connected to the drive motor. A washing pipe is provided in the washing chamber. A washing water pump is provided outside the washing chamber. The drive motor is used to drive the washing water pump to operate. The washing water pump is connected to the washing pipe, and the washing pipe is provided with a water spray outlet. The method provided by the present disclosure includes: in a target washing mode, the controller controls the drive motor to drive the washing water pump to draw water outside the washing chamber into the washing pipe and spray it out from the water spray outlet; the controller obtains the operating power of the drive motor; when the difference between the obtained operating power of the drive motor and the standard operating power associated with the target washing mode is greater than a set difference threshold, the controller performs magnetic field oriented control adjustment on the drive motor; and until the difference between the obtained operating power of the drive motor and the standard operating power associated with the target washing mode is less than the set difference threshold.

[0014] In a third aspect, the present disclosure further provides a water pressure control device for a water spray outlet of a dishwasher, the device being configured in a controller, the controller being applied to the dishwasher, the dishwasher further comprising a drive motor and a washing chamber, the controller being electrically connected to the drive motor, a washing pipe being provided within the washing chamber, a washing water pump being provided outside the washing chamber, the drive motor being configured to drive the washing water pump, the washing water pump being in electrical communication with the washing pipe, and the washing pipe being provided with a water spray outlet. The device comprises: a motor control unit configured to, in a target washing mode, control the drive motor to drive the washing water pump to draw water outside the washing chamber into the washing pipe and spray it out of the water spray outlet; a parameter acquisition unit configured to acquire operating parameters of the drive motor; a water pressure determination unit configured to determine the water pressure of the water spray outlet of the washing pipe based on the operating parameters of the drive motor; and a parameter adjustment unit configured to, when the difference between the water pressure of the water spray outlet and a standard water pressure associated with the target washing mode is greater than a set difference threshold, adjust the operating parameters of the drive motor based on the difference until the difference between the water pressure of the water spray outlet and the standard water pressure is no greater than the difference threshold.

[0015] In a fourth aspect, the present disclosure further provides a dishwasher, which includes a controller, a drive motor, and a washing chamber. The controller is electrically connected to the drive motor. A washing pipe is provided in the washing chamber. A washing water pump is provided outside the washing chamber. The drive motor is used to drive the washing water pump to operate. The washing water pump is connected to the washing pipe. The washing pipe is provided with a water spray port. The controller is used to execute the water pressure control method of the water spray port of the dishwasher provided in the first aspect of the present disclosure.

[0016] In a fifth aspect, the present disclosure provides a storage medium comprising computer program instructions stored thereon. When the computer program instructions are executed by a controller of a dishwasher, the controller is enabled to execute the water pressure control method for the water spray port of the dishwasher as provided in the first aspect or the second aspect of the present application.

[0017] In a sixth aspect, the present disclosure further provides a computer program product, comprising a computer program, which, when executed, enables a computer to execute the water pressure control method for a water spray port of a dishwasher as provided in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings described below are some embodiments of the present disclosure. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0019] FIG1 is a schematic structural diagram of a dishwasher according to some embodiments of the present disclosure;

[0020] FIG2 is a flow chart of a method for controlling water pressure of a water spray port of a dishwasher according to some embodiments of the present disclosure;

[0021] FIG3 is a flow chart of correcting the water pump water pressure of a water spout according to some embodiments of the present disclosure;

[0022] FIG4 is a second flow chart of a method for controlling water pressure of a water spray port of a dishwasher according to some embodiments of the present disclosure;

[0023] FIG5 is a functional module block diagram of a water pressure control device for a water spray port of a dishwasher according to some embodiments of the present disclosure;

[0024] FIG6 is a second functional module block diagram of the water pressure control device of the water spray port of the dishwasher according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0025] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0026] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments of the present disclosure. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes, relative sizes, and positional relationships of the various regions and layers shown in the figures are merely illustrative and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0027] In the context of the present disclosure, when a layer / element is referred to as being "on" another layer / element, it can be directly on the other layer / element or an intervening layer / element may be present therebetween. In addition, if a layer / element is "on" another layer / element in one orientation, it may be "below" the other layer / element when the orientation is reversed.

[0028] Below, the technical solution of the present disclosure and how the technical solution of the present disclosure solves the above-mentioned technical problems are described in detail with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present disclosure will be described below with reference to the accompanying drawings.

[0029] Currently, the method for maintaining a constant rinse pressure during a particular wash mode is to control the dishwasher's drive motor to maintain a constant speed. However, if the dishwasher's water circulation piping becomes clogged or bubbles form, even with a constant drive motor speed, the rinse pressure from the dishwasher's water outlets may still be unstable. This, in turn, results in incomplete cleaning of the dishes.

[0030] The embodiment of the present disclosure provides a water pressure control method for a water spray port of a dishwasher, which is applied to a dishwasher 100. As shown in FIG1 , the dishwasher 100 may include a controller 101, a drive motor 102, and a washing chamber 106. In some embodiments, the controller 101 may be, but is not limited to, a single-chip microcomputer. The drive motor 102 may be, but is not limited to, a brushless DC motor. The controller 101 is electrically connected to the drive motor 102, respectively. A washing pipe 104 is provided in the washing chamber 106, and a washing water pump 103 is provided outside the washing chamber 106. The drive motor 102 is used to drive the washing water pump 103 to operate. The washing water pump 103 is connected to the washing pipe 104, and the washing pipe 104 is provided with a water spray port 105. As shown in FIG2 , the method provided in the embodiment of the present disclosure includes steps S201 to S205.

[0031] In step S201 , the controller 101 controls the driving motor 102 to drive the washing water pump 103 in the target washing mode to draw water outside the washing chamber 106 into the washing pipe 104 and spray it out from the water spray port 105 .

[0032] It is understood that when the dishwasher 100 is washing dishes, multiple different washing modes may be used to better clean the dishes while also conserving energy. In some embodiments, the multiple different washing modes may include a high-pressure rinse mode and a low-pressure rinse mode. The controller 101 may sequentially control the dishwasher 100 to operate in different washing modes according to pre-configured washing strategies, so as to effectively clean the dishes in the washing chamber 106.

[0033] The target washing mode mentioned above may be a high-pressure washing mode or a low-pressure washing mode, etc., which is not limited here.

[0034] Step S202: The controller obtains the water pressure of the water spraying outlet of the washing pipeline.

[0035] In some embodiments, a second water pressure sensor may be installed at the water outlet of the washing pipe, and the second water pressure sensor may collect the water pressure of the water outlet of the washing pipe and transmit it to the controller.

[0036] In other embodiments, the controller 101 can obtain operating parameters of the drive motor 102 and determine the water pressure at the water outlet 105 of the washing pipe 104 based on the operating parameters of the drive motor 102. This eliminates the need to install a first water pressure sensor at the water outlet of the washing pipe, which is susceptible to dishwashing water corrosion, thereby saving costs and improving reliability.

[0037] In some embodiments, the drive motor 102 may include an operating parameter acquisition module (e.g., a current acquisition module, a voltage acquisition module, a speed acquisition module, etc.) of the drive motor 102. The drive motor 102 may acquire its own operating parameters (e.g., the speed of the rotor of the drive motor 102, the current flowing through the drive motor 102, and the voltage across the two ends of the drive motor 102).

[0038] In some implementations, step S202 may include but is not limited to the following two implementations:

[0039] The first method involves the controller 101 searching a pre-stored relationship table based on the operating parameters of the drive motor 102 to determine the water pressure at the water outlet 105 of the washing pipe 104. In some embodiments, the pre-stored relationship table includes a one-to-one correspondence between the operating parameters of the drive motor 102 and the water pressure. This relationship table is established by historically testing multiple instances of the drive motor 102 operating parameters and the corresponding water pressures in the dishwasher 100, resulting in a highly reliable result. Consequently, the water pressure determined from the pre-stored relationship table is also highly reliable.

[0040] In some embodiments, when the operating parameters of the drive motor 102 include the speed of the drive motor 102 and the current flowing through the drive motor 102, the controller 101 can find the water pressure of the water outlet 105 of the washing pipe 104 that corresponds to the speed of the drive motor 102 and the current flowing through the drive motor 102 from a pre-stored relationship table.

[0041] After the dishwasher 100 has been used for a long time, the circulating water pipes of the dishwasher 100 may be worn, blocked, etc., which may cause the correspondence between the operating parameters of the drive motor 102 and the water pressure in the relationship table to be inaccurate. Therefore, the correspondence between the operating parameters of the drive motor 102 and the water pressure in the relationship table needs to be corrected.

[0042] In some embodiments, the modified process may include: a first water pressure sensor (not shown in the drawings) may be installed at the water inlet or outlet of the wash water pump 103, electrically connected to the controller 101. It is understood that since the wash water pump 103 is located outside the wash chamber 106, the first water pressure sensor is also located outside the wash chamber 106. This protects the first water pressure sensor from being corroded by dishwashing water, and the collected data is highly reliable. Following step S201, as shown in FIG3 , the method provided by the disclosed embodiment may further include steps S301 through S303.

[0043] Step S301: the controller 101 receives the water pressure of the washing water pump 103 transmitted from the first water pressure sensor.

[0044] In some embodiments, the first water pressure sensor may collect the water pressure flowing through the wash water pump 103 and transmit the collected water pressure to the controller 101. Furthermore, the controller 101 may receive the water pressure flowing through the wash water pump 103 transmitted from the first water pressure sensor.

[0045] Step S302: When the time between the current moment and the time of the last pre-recorded correction relationship table reaches the preset time, the controller 101 determines the real-time water spraying pressure of the water outlet 105 of the washing pipe 104 according to the water pump pressure of the washing water pump 103 and the set adjustment coefficient.

[0046] In some embodiments, the preset duration can be one day, one week, etc., which is not limited here. It is understandable that the preset duration can be the duration during which the dishwasher 100 is prone to wear and tear, etc. It is understandable that because the water pump is connected to the water outlet 105 of the washing pipe 104, the water pressure of the washing water pump 103 and the water pressure of the water outlet 105 are positively correlated. It should be noted that the above-mentioned adjustment coefficient can be obtained by the historical water pressure of the washing water pump 103 and the historical water pressure of the water outlet 105.

[0047] In some embodiments, the real-time water pressure of the water outlet 105 of the washing pipe 104 can be determined by a formula. In some embodiments, P1 is the real-time water pressure of the water outlet 105 of the washing pipe 104, is the adjustment coefficient, and is the water pressure of the washing water pump 103.

[0048] Step S303 : the controller 101 corrects the water pressure of the water outlet 105 corresponding to the operating parameters of the driving motor 102 in the relationship table according to the real-time water pressure of the water outlet 105 .

[0049] It can be understood that the mapping relationship between the operating parameters of the drive motor 102 and the real-time water pressure of the water outlet 105 of the washing pipe 104 represented in the revised relationship table is more reliable.

[0050] The second method: the controller 101 inputs the operating parameters of the driving motor 102 into the pre-trained water spray pressure determination model, so that the water spray pressure determination model outputs the water spray pressure of the water spray port 105 of the washing pipe 104.

[0051] In some embodiments, the water spray pressure determination model is obtained by inputting a training sample set consisting of multiple historical operating parameters of the driving motor 102 and the corresponding historical water spray pressures of the water spray outlet 105 of the washing pipe 104 into an initial model to be trained.

[0052] In some embodiments, the initial model to be trained is a convolutional neural network or a decision tree model, which is not limited here. The convolutional neural network consists of an input layer, a hidden layer, and an output layer. In a convolutional neural network, the hidden layer includes a layer that performs convolution. Typically, this includes a layer that performs a dot product between the convolution kernel and the input matrix of the layer. This product is usually a Frobenius inner product, and its activation function is usually ReLU. When the convolution kernel slides along the input matrix of the layer, the convolution operation produces a feature map, which in turn contributes to the input of the next layer. This is followed by other layers, such as pooling layers, fully connected layers, and normalization layers. Convolutional neural networks can be applied to image segmentation, data estimation, data classification, and other fields. The decision tree model is a model based on a tree structure that makes predictions through a series of decision nodes and leaf nodes. Each node represents a feature, each edge represents a feature value, and the prediction result is obtained by traversing the tree.

[0053] Step S203: The controller 101 determines whether the difference between the water pressure of the water outlet 105 and the standard water pressure associated with the target washing mode is greater than the set difference threshold. If so, execute step S204; if not, execute step S205 (in some embodiments, when the difference is less than or equal to the set difference threshold, execute step S205).

[0054] Step S204: the controller 101 adjusts the operating parameters of the drive motor 102 according to the difference and returns to execute S201.

[0055] Step S205: The controller 101 determines that the adjustment is completed.

[0056] Among them, the execution process of step S203-step S205 can be understood as: when the difference between the water pressure of the water outlet 105 and the standard water pressure associated with the target washing mode is greater than the set difference threshold, the operating parameters of the drive motor are adjusted according to the difference until the difference between the water pressure of the water outlet 105 and the standard water pressure is no greater than the difference threshold.

[0057] It can be understood that the regulation process of steps S203-S205 can be understood as a proportional-integral (PI) process for regulating the water pressure of the water outlet 105. Based on the above steps S204-S205, the water pressure of the water outlet 105 can be stabilized. In some embodiments, PI regulation combines the functions of proportional control and integral control.

[0058] In some implementations, proportional control (P) can generate a corresponding output signal based on the deviation of the current signal. This control method aims to quickly reduce the difference between input and output. Integral control (I) can accumulate errors over a certain period of time and then amplify them, thereby more effectively offsetting the accumulated errors within the system. Combining these two control methods, PI can achieve adaptive control of the regulated object (such as the operating parameters of drive motor 102) in complex environments, improving the stability of the regulated object.

[0059] It should be noted that when the operating parameters of the drive motor 102 include the speed of the drive motor 102 and the current flowing through the drive motor 102, the speed of the drive motor 102 can be first PI-regulated, and then the current flowing through the drive motor 102 can be PI-regulated. In this way, the water pressure of the water outlet 105 can be made more stable.

[0060] It should be noted that, as shown in Figure 1, the washing pipe 104 may include multiple pairs of water nozzles 105. In some embodiments, it may include 3 pairs, 4 pairs or 5 pairs of water nozzles 105, etc., which are not limited here. Each pair of water nozzles 105 is arranged relative to each other on the same horizontal plane. In some embodiments, when the washing pipe 104 includes 3 pairs of water nozzles 105, the 3 pairs of water nozzles 105 can be arranged in sequence from top to bottom, and the washing modes of the 3 pairs of water nozzles 105 can be the same or different. It should be noted that for each pair of water nozzles 105, the control method for maintaining the stability of the water pressure of the water spray can be the process of steps S201 to S205, which will not be repeated here.

[0061] In summary, the disclosed embodiments provide a method for controlling water pressure at a dishwasher's water outlet. The controller 101 can obtain the operating parameters of the drive motor 102 and, based on the operating parameters of the drive motor 102, determine the water pressure at the water outlet 105 of the washing pipe 104. When the difference between the water pressure at the water outlet 105 and the standard water pressure associated with the target washing mode exceeds a predetermined threshold, the operating parameters of the drive motor 102 are adjusted based on the difference until the difference between the water pressure at the water outlet 105 and the standard water pressure is no greater than the threshold. This method stabilizes the pressure at the water outlet 105 of the dishwasher 100, ensuring optimal dishwashing performance.

[0062] In addition, embodiments of the present disclosure also provide another method for controlling the water pressure of a dishwasher's water spray outlet, also applicable to dishwasher 100. Still as shown in FIG1 , dishwasher 100 includes a controller 101, a drive motor 102, and a washing chamber 106. Controller 101 is electrically connected to drive motor 102. Washing chamber 106 is provided with a washing pipe 104. A washing water pump 103 is provided outside washing chamber 106. Drive motor 102 is configured to drive wash water pump 103. Washing water pump 103 is electrically connected to washing pipe 104, which is provided with a water spray outlet 105. As shown in FIG4 , the method provided in embodiments of the present disclosure includes steps S401-S405.

[0063] Step S401 : in the target washing mode, the controller 101 controls the driving motor 102 to drive the washing water pump 103 to draw water outside the washing chamber 106 into the washing pipe 104 and spray it out from the water spray port 105 .

[0064] It should be noted that the principle of step S401 is the same as that of the above-mentioned step S201, which will not be described in detail here.

[0065] Step S402 : the controller 101 obtains the operating power of the driving motor 102 .

[0066] In some embodiments, the drive motor 102 may include a current acquisition module and a voltage acquisition module. The current acquisition module may acquire the current flowing through the drive motor 102 and transmit it to the controller 101. The voltage acquisition module may acquire the voltage across the drive motor 102 and transmit it to the controller 101. The controller 101 may obtain the operating power of the drive motor 102 based on the received current and voltage.

[0067] Step S403: The controller 101 determines whether the difference between the acquired operating power of the drive motor 102 and the standard operating power associated with the target washing mode is greater than the set difference threshold. If so, step S404 is executed; if not, step S405 is executed (in some embodiments, when the difference is less than or equal to the set difference threshold, step S405 is executed).

[0068] Step S404: the controller 101 performs magnetic field oriented control on the drive motor 102 and returns to execute S401.

[0069] Field-Oriented Control (FOC) is a motor control strategy, also known as vector control, which controls the power of a drive motor 102 (such as a three-phase brushless DC motor) by controlling the amplitude and frequency of the inverter output voltage.

[0070] Step S405: Determine that the adjustment is completed.

[0071] It should be noted that the adjustment process of steps S403-S405 can be understood as follows: when the difference between the determined water pressure at the water outlet 105 and the standard water pressure associated with the target wash mode is greater than a set difference threshold, the operating parameters of the drive motor are adjusted according to the difference until the difference between the water pressure at the water outlet 105 and the standard water pressure is no greater than the difference threshold. In other words, the proportional-integral (PI) method adjusts the power of the drive motor 102. Based on the above-mentioned steps S204-S205, when the power of the drive motor 102 is stable, the water pressure at the water outlet 105 can also be stabilized.

[0072] In summary, the embodiment of the present disclosure provides a method for controlling the water pressure of a water outlet of a dishwasher. The controller 101 can obtain the operating power of the drive motor 102. When the difference between the obtained operating power of the drive motor 102 and the standard operating power associated with the target washing mode is greater than a set difference threshold, the drive motor 102 is subjected to magnetic field oriented control and adjustment until the difference between the obtained operating power of the drive motor 102 and the standard operating power associated with the target washing mode is less than the set difference threshold. In this way, the power of the drive motor 102 of the dishwasher 100 can be stabilized. It can be understood that when the power of the drive motor 102 is stable, the flushing pressure of the water outlet 105 of the dishwasher 100 is also stable, so that the dishes can be cleaned well, and there is no need to install an additional water pressure sensor, which is low in cost and high in reliability.

[0073] Please refer to Figure 5. The embodiment of the present disclosure also provides a water pressure control device 500 for the water spray port of a dishwasher, which is configured in the controller 101. The controller 101 is applied to the dishwasher 100. The dishwasher 100 also includes a drive motor 102 and a washing chamber 106. The controller 101 is electrically connected to the drive motor 102 respectively. A washing pipe 104 is provided in the washing chamber 106. A washing water pump 103 is provided outside the washing chamber 106. The drive motor 102 is used to drive the washing water pump 103 to operate. The washing water pump 103 is connected to the washing pipe 104, and the washing pipe 104 is provided with a water spray port 105.

[0074] It should be noted that the basic principle and technical effects of the water pressure control device 500 for the water spray port of the dishwasher provided in the embodiment of the present disclosure are the same as those of the above embodiments. For the sake of simplicity, for the parts not mentioned in this embodiment, please refer to the corresponding contents in the above embodiments. As shown in Figure 5, the device 500 provided in the embodiment of the present disclosure includes a motor control unit 501, a water pressure determination unit 502, and a parameter adjustment unit 503, wherein:

[0075] The motor control unit 501 is used to control the driving motor 102 to drive the washing water pump 103 to draw water outside the washing chamber 106 into the washing pipe 104 and spray it out from the water spray port 105 in the target washing mode.

[0076] The water pressure determination unit 502 is used to obtain the water pressure of the water spraying outlet of the washing pipeline.

[0077] The parameter adjustment unit 503 is used to adjust the operating parameters of the drive motor 102 according to the difference when the difference between the water spraying pressure of the water spraying outlet 105 and the standard water spraying pressure associated with the target washing mode is greater than the set difference threshold, until the difference between the water spraying pressure of the water spraying outlet 105 and the standard water spraying pressure is no greater than the difference threshold.

[0078] In a possible implementation, the water pressure determination unit 502 is specifically configured to search for the spraying water pressure of the water outlet 105 of the washing pipe 104 from a pre-stored relationship table according to the operating parameters of the drive motor 102 .

[0079] In some embodiments, the operating parameters of the drive motor 102 include the speed of the drive motor 102 and the current flowing through the drive motor 102. The water pressure determination unit 502 is specifically used to find the water pressure of the water outlet 105 of the washing pipe 104 that corresponds to the speed of the drive motor 102 and the current flowing through the drive motor 102 from a pre-stored relationship table.

[0080] In one possible embodiment, a first water pressure sensor is provided at the water inlet or outlet of the washing water pump 103. The apparatus 500 provided in the embodiment of the present disclosure may further include a parameter correction unit configured to receive the water pressure of the washing water pump 103 transmitted from the first water pressure sensor; determine the real-time water pressure of the water outlet 105 of the washing pipe 104 based on the water pressure of the washing water pump 103 and a set adjustment coefficient when the duration between the current moment and the moment of the last correction in the pre-recorded relationship table reaches a preset duration; and correct the water pressure of the water outlet 105 corresponding to the operating parameters of the drive motor 102 in the relationship table based on the real-time water pressure of the water outlet 105.

[0081] In another possible embodiment, the water pressure determination unit 502 is specifically configured to input the operating parameters of the drive motor 102 into a pre-trained water spray pressure determination model, so that the water spray pressure determination model outputs the water spray pressure at the water outlet 105 of the washing pipe 104. In some embodiments, the water spray pressure determination model is trained by inputting a training sample set consisting of multiple historical operating parameters of the drive motor 102 and corresponding historical water spray pressures at the water outlet 105 of the washing pipe 104 into an initial to-be-trained model.

[0082] In some embodiments, the initial model to be trained is a convolutional neural network or a decision tree model.

[0083] In a possible implementation, the water pressure determination unit 502 is specifically used to obtain the operating parameters of the drive motor; the controller determines the water pressure of the water spraying outlet of the washing pipe according to the operating parameters of the drive motor.

[0084] Please refer to Figure 6. The embodiment of the present disclosure also provides another water pressure control device 600 for the water spray port of a dishwasher, which is configured in the controller 101. The controller 101 is configured in the dishwasher 100. The dishwasher 100 also includes a drive motor 102 and a washing chamber 106. The controller 101 is electrically connected to the drive motor 102 respectively. A washing pipe 104 is provided in the washing chamber 106. A washing water pump 103 is provided outside the washing chamber 106. The drive motor 102 is used to drive the washing water pump 103 to operate. The washing water pump 103 is connected to the washing pipe 104, and the washing pipe 104 is provided with a water spray port 105. It should be noted that the basic principle and technical effects of the water pressure control device 600 for the water spray port of the dishwasher provided in the embodiment of the present disclosure are the same as those in the above embodiment. For the sake of brief description, for parts not mentioned in this embodiment, please refer to the corresponding content in the above embodiment. The device 600 provided in the embodiment of the present disclosure includes a motor control unit 601, a power acquisition unit 602, and a power adjustment unit 603, wherein,

[0085] The motor control unit 601 is used to control the driving motor 102 to drive the washing water pump 103 to draw water outside the washing chamber 106 into the washing pipe 104 and spray it out from the water spray port 105 in the target washing mode;

[0086] The power acquisition unit 602 is used for the controller 101 to obtain the operating power of the drive motor 102;

[0087] The power adjustment unit 603 performs magnetic field oriented control adjustment on the drive motor 102 when the difference between the obtained operating power of the drive motor 102 and the standard operating power associated with the target washing mode is greater than the set difference threshold, until the difference between the obtained operating power of the drive motor 102 and the standard operating power associated with the target washing mode is less than the set difference threshold.

[0088] In addition, an embodiment of the present disclosure also provides a dishwasher, which includes a controller, a drive motor, and a washing chamber. The controller is electrically connected to the drive motor. A washing pipe is provided in the washing chamber. A washing water pump is provided outside the washing chamber. The drive motor is used to drive the washing water pump to operate. The washing water pump is connected to the washing pipe, and the washing pipe is provided with a water spray port. The controller is used to execute the water pressure control method of the water spray port of the dishwasher provided in the above embodiment of the present disclosure.

[0089] In some embodiments, the controller may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method can be completed by the integrated logic circuit of the hardware in the controller or the instructions in the form of software. The above controller can be a general processor (for example, a microprocessor or a conventional processor), a digital signal processor (digital signal processing, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), a field-programmable gate array (field-programmable gate array, FPGA) or other programmable logic devices, discrete gates, transistor logic devices or discrete hardware components. The controller can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present disclosure.

[0090] In addition, an embodiment of the present disclosure provides a storage medium. When the instructions in the storage medium are executed by the controller of the dishwasher, the controller can execute the water pressure control method of the water spray port of the dishwasher provided by the above embodiment of the present disclosure.

[0091] In addition, embodiments of the present disclosure further provide a computer program product, including a computer program. When executed, the computer program causes a computer to execute the method for controlling the water pressure of a dishwasher's water outlet as described in any of the aforementioned embodiments of the present application. The computer program product may be pre-written in a memory or downloaded and installed in the memory in software form. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present disclosure are fully or partially executed.

[0092] In the several embodiments provided in the present disclosure, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a portion of code, and the module, program segment or a portion of code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0093] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0094] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the relevant technology, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program code, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0095] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention. It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

Claims

1. A method for controlling the water pressure of a water spray port of a dishwasher, the dishwasher comprising a controller, a drive motor, and a washing chamber, the controller being electrically connected to the drive motor, a washing pipe being provided within the washing chamber, a washing water pump being provided outside the washing chamber, the drive motor being configured to drive the washing water pump, the washing water pump being in electrical communication with the washing pipe, and the washing pipe being provided with a water spray port, the method comprising: In the target washing mode, the controller controls the driving motor to drive the washing water pump to draw water outside the washing chamber into the washing pipe and spray it out from the water spray port; The controller obtains the water pressure of the water spraying port of the washing pipeline; as well as When the difference between the water pressure of the water outlet and the standard water pressure associated with the target washing mode is greater than a set difference threshold, the controller adjusts the operating parameters of the drive motor according to the difference until the difference between the water pressure of the water outlet and the standard water pressure is no greater than the difference threshold.

2. The method according to claim 1, wherein The controller determines the water pressure of the water spraying port of the washing pipe according to the operating parameters of the driving motor, including: The controller searches for the water pressure of the water outlet of the washing pipe from a pre-stored relationship table according to the operating parameters of the driving motor.

3. The method according to claim 2, wherein: The operating parameters of the drive motor include the speed of the drive motor and the current flowing through the drive motor. The controller searches for the water pressure of the water outlet of the washing pipe from a pre-stored relationship table based on the operating parameters of the drive motor, including: The water pressure of the water outlet of the washing pipe that corresponds to the rotational speed of the driving motor and the current flowing through the driving motor is found from the pre-stored relationship table.

4. The method according to claim 2 or 3, wherein: A first water pressure sensor is provided at a water inlet or a water outlet of the washing water pump. After controlling the driving motor to drive the washing water pump to draw water outside the washing chamber into the washing pipe and spray it out from the water spray port, the method further includes: The controller receives the water pressure of the washing water pump flowing through the washing water pump transmitted from the first water pressure sensor; The controller determines the real-time water pressure of the water outlet of the washing pipe according to the water pressure of the washing water pump and a set adjustment coefficient when the time between the current time and the pre-recorded time when the relationship table was last modified reaches a preset time; and The controller corrects the water spraying pressure of the water spraying port corresponding to the operating parameters of the driving motor in the relationship table according to the determined real-time water spraying pressure of the water spraying port.

5. The method according to any one of claims 1 to 4, wherein The controller determines the water pressure of the water spraying port of the washing pipe according to the operating parameters of the driving motor, including: The controller inputs the pre-trained water pressure to determine the water pressure according to the operating parameters of the drive motor. A fixed model is defined so that the water spray pressure determination model outputs the water spray pressure of the water spray outlet of the washing pipe, wherein the water spray pressure determination model is obtained by inputting a training sample set consisting of multiple historical driving motor operating parameters and the corresponding historical water spray pressures of the water spray outlet of the washing pipe into the initial model to be trained.

6. The method according to any one of claims 1 to 5, wherein The controller obtains the water pressure of the water spraying port of the washing pipeline, including: The controller obtains the operating parameters of the drive motor; and The controller determines the water pressure of the water spraying port of the washing pipe according to the operating parameters of the driving motor.

7. A method for controlling the water pressure of a water spray port of a dishwasher, the dishwasher comprising a controller, a drive motor, and a washing chamber, the controller being electrically connected to the drive motor, a washing pipe being disposed within the washing chamber, a washing water pump being disposed outside the washing chamber, the drive motor being configured to drive the washing water pump, the washing water pump being in electrical communication with the washing pipe, and the washing pipe being provided with a water spray port, the method comprising: In the target washing mode, the controller controls the driving motor to drive the washing water pump to draw water outside the washing chamber into the washing pipe and spray it out from the water spray port; The controller obtains the operating power of the driving motor; as well as When the difference between the obtained operating power of the drive motor and the standard operating power associated with the target washing mode is greater than a set difference threshold, the controller performs magnetic field oriented control adjustment on the drive motor until the difference between the obtained operating power of the drive motor and the standard operating power associated with the target washing mode is no greater than the set difference threshold.

8. A device for controlling water pressure of a water spray port of a dishwasher, configured in a controller, the controller being applied to the dishwasher, the dishwasher further comprising a drive motor and a washing chamber, the controller being electrically connected to the drive motor, the washing chamber being provided with a washing pipe, the washing chamber being provided with a washing water pump, the drive motor being configured to drive the washing water pump, the washing water pump being in communication with the washing pipe, the washing pipe being provided with a water spray port, the device comprising: a motor control unit, configured to control the drive motor to drive the washing water pump to draw water outside the washing chamber into the washing pipe and spray it out from the water spray port in a target washing mode; a water pressure determination unit, configured to obtain the water pressure of the water spraying port of the washing pipeline; And a parameter adjustment unit, which is used to adjust the operating parameters of the drive motor according to the difference when the difference between the determined water pressure of the water spraying outlet and the standard water spraying pressure associated with the target washing mode is greater than a set difference threshold, until the difference between the water pressure of the water spraying outlet and the standard water spraying pressure is less than the difference threshold.

9. A dishwasher comprising a controller, a drive motor, and a washing chamber, wherein the controller is electrically connected to the drive motor, a washing pipe is provided in the washing chamber, a washing water pump is provided outside the washing chamber, the drive motor is used to drive the washing water pump, the washing water pump is connected to the washing pipe, and the washing pipe is provided with a water spray port, wherein: The controller is used to execute the water pressure control method of the water spray port of the dishwasher according to any one of claims 1 to 7.

10. A storage medium comprising computer program instructions stored thereon, wherein when the computer program instructions are executed by a controller of a dishwasher, the controller is enabled to execute the water pressure control method of a water spray port of a dishwasher according to any one of claims 1 to 7.

11. A computer program product comprising a computer program, which, when executed, enables a computer to execute the water pressure control method for a water spray port of a dishwasher according to any one of claims 1 to 7.

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