Dishwasher control method, device, dishwasher and storage medium

Abstract

The present invention discloses a dishwasher control method, device, dishwasher, and storage medium. The method includes: obtaining a current flow velocity fluctuation range of water flow in an internal water channel detected by a flow velocity sensor during operation of a washing pump; determining whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the internal water channel; if it is determined that the dishwasher has water and is not short of water, controlling the dishwasher to operate normally; if it is determined that the dishwasher has water but is short of water, replenishing water to the dishwasher based on the current flow velocity fluctuation range of the water flow in the internal water channel; and if it is determined that there is no water in the dishwasher, controlling the dishwasher to shut down and replenishing water based on the model and capacity of the dishwasher. This solution detects the flow velocity of the water flow in the internal water channel of the dishwasher, determines whether there is sufficient water in the dishwasher based on the flow velocity, and replenishes water in a targeted manner based on the flow velocity, thereby achieving precise control of the water replenishment amount and avoiding waste of water resources.

Description

Technical Field

[0001] The present invention belongs to the technical field of dishwashers, and specifically relates to a control method, device, dishwasher and storage medium for a dishwasher, and more particularly to a method, device, dishwasher and storage medium for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water. Background Art

[0002] With the rapid increase in dishwasher adoption, dishwashers have become ubiquitous. The water level, or the amount of water, in a dishwasher during a wash cycle is measured by a water pressure switch. Since most dishwashers rely on a wash pump (such as a DC wash pump) to pump water into the internal water pipes before using the spray arm to wash dishes, this results in insufficient water in the dishwasher's water cup during the wash cycle. This can easily lead to the water level pressure switch being mistakenly triggered by insufficient water at a given moment. Once this occurs, the dishwasher activates its protective logic, causing water to refill, resulting in wasteful use.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The object of the present invention is to provide a control method, device, dishwasher and storage medium for a dishwasher, so as to solve the problem that the amount of water used in the dishwasher during washing is measured by a water level pressure switch. Once the amount of water in the water cup of the dishwasher during washing is too little and the water level pressure switch is mistakenly triggered, the dishwasher will activate the protection logic and water will be added again, resulting in a waste of water resources. By detecting the flow rate of the water flow in the inner water channel of the dishwasher, it is determined whether the amount of water in the dishwasher is sufficient according to the flow rate of the water flow in the inner water channel of the dishwasher, and targeted water replenishment is performed according to the different flow rates of the water flow in the inner water channel of the dishwasher, it is possible to achieve the effect of accurately controlling the water replenishment amount and avoiding the waste of water resources.

[0005] The present invention provides a control method for a dishwasher, wherein the dishwasher has a spray arm and a washing pump; the number of the spray arms is n, where n is a positive integer; the n spray arms include at least an upper spray arm; a flow rate sensor is installed on an inner water channel in the dishwasher for allowing water to flow to the upper spray arm; the control method for the dishwasher comprises: after the dishwasher is started, controlling water to flow into the dishwasher; after the water flow into the dishwasher is completed, controlling the washing pump to start and run; during the operation of the washing pump, obtaining a flow rate fluctuation range of water flow in the inner water channel in the dishwasher for allowing water to flow to the upper spray arm detected by the flow rate sensor, and recording it as a current flow rate fluctuation range of water flow in the inner water channel; and adjusting the flow rate according to the current flow rate of water in the inner water channel. The dishwasher is determined to have a water shortage or no water in it according to the flow rate fluctuation range before the dishwasher is filled. If it is determined that there is water in the dishwasher and there is no water shortage, the washing operation of the dishwasher is controlled to operate normally. If it is determined that there is water in the dishwasher but there is no water shortage, the washing operation of the dishwasher is controlled to operate normally. When the washing operation of the dishwasher is operating normally, water is added to the dishwasher according to the current flow rate fluctuation range of the water flow in the inner water channel. After the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally. If it is determined that there is no water in the dishwasher, the dishwasher is controlled to stop. Water is added to the dishwasher according to the model and capacity of the dishwasher. After the water addition is completed, the washing pump is controlled to start and operate again.

[0006] In some embodiments, determining whether the dishwasher is short of water or determining whether there is no water in the dishwasher is based on the current flow velocity fluctuation range of the water flow in the inner water channel, including: if it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel is equal to the standard flow velocity fluctuation range of the dishwasher, determining that the dishwasher has water and is not short of water; if it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel is greater than the standard flow velocity fluctuation range of the dishwasher, determining that the dishwasher has water but is short of water; if it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel is equal to 0, determining that there is no water in the dishwasher.

[0007] In some embodiments, controlling the washing operation of the dishwasher to operate normally, and when the washing operation of the dishwasher is operating normally, replenishing water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the internal water channel, and still controlling the washing operation of the dishwasher to operate normally after the water replenishment is completed, includes: if the dishwasher is in a water heating state, controlling the dishwasher to stop heating, and controlling the washing operation of the dishwasher to operate normally; and, when the washing operation of the dishwasher is operating normally, replenishing water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the internal water channel, and still controlling the washing operation of the dishwasher to operate normally after the water replenishment is completed, and controlling the dishwasher to heat again after the water replenishment is completed; if the dishwasher is not in a water heating state, controlling the washing operation of the dishwasher to operate normally; and, when the washing operation of the dishwasher is operating normally, replenishing water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the internal water channel, and still controlling the washing operation of the dishwasher to operate normally after the water replenishment is completed.

[0008] In some embodiments, controlling the dishwasher to operate normally, and, when the dishwasher operates normally, replenishing water into the dishwasher based on a current flow velocity fluctuation range of the water flow in the inner water channel, and continuing to control the dishwasher to operate normally after the water replenishment is completed, further includes: if the current flow velocity fluctuation range of the water flow in the inner water channel is less than or equal to a first set flow velocity fluctuation range, replenishing a first set amount of water into the dishwasher when the dishwasher operates normally, and continuing to control the dishwasher to operate normally after the water replenishment is completed; if the current flow velocity fluctuation range of the water flow in the inner water channel is greater than the first set flow velocity fluctuation range and less than a second set flow velocity fluctuation range, replenishing a second set amount of water into the dishwasher when the dishwasher operates normally, and continuing to control the dishwasher to operate normally after the water replenishment is completed; if the current flow velocity fluctuation range of the water flow in the inner water channel is greater than or equal to the second set flow velocity fluctuation range, replenishing a third set amount of water into the dishwasher when the dishwasher operates normally, and continuing to control the dishwasher to operate normally after the water replenishment is completed.

[0009] In some embodiments, the dishwasher is controlled to stop, and water is replenished to the dishwasher according to the model and capacity of the dishwasher, and the washing pump is controlled to start and operate again after the water replenishment is completed, including: after the dishwasher is controlled to stop, based on the correspondence between the set model, the set capacity and the set water replenishment amount, the set water replenishment amount corresponding to the set model and set capacity that are the same as the model and capacity of the dishwasher in the correspondence is determined as the water replenishment amount that needs to be replenished to the dishwasher, and recorded as the current water replenishment amount of the dishwasher; water is replenished to the dishwasher according to the current water replenishment amount of the dishwasher, and the washing pump is controlled to start and operate again after the water replenishment is completed.

[0010] In some embodiments, the further includes: when it is determined that there is water in the dishwasher but there is a lack of water, water has been added to the dishwasher according to the current flow rate fluctuation range of the water flow in the inner water channel, and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally, if it is again determined that there is water in the dishwasher but there is a lack of water or that the dishwasher is determined to have no water, then the dishwasher is determined to be in an abnormal state; when it is determined that there is no water in the dishwasher, water has been added to the dishwasher according to the model and capacity of the dishwasher, and after the water addition is completed, the washing pump is re-controlled to start and operate, if it is again determined that there is water in the dishwasher but there is a lack of water or that the dishwasher is determined to have no water, then the dishwasher is determined to be in an abnormal state; when it is determined that the dishwasher is in an abnormal state, the dishwasher is controlled to shut down, and a reminder message indicating that the dishwasher is in an abnormal state is initiated.

[0011] Matching the above method, another aspect of the present invention provides a control device for a dishwasher, wherein the dishwasher has a spray arm and a washing pump; the number of the spray arms is n, where n is a positive integer; the n spray arms include at least an upper spray arm; a flow rate sensor is installed on an internal water channel in the dishwasher for allowing water to flow to the upper spray arm; the control device for the dishwasher comprises: a control unit configured to control water inlet to the dishwasher after the dishwasher is started; the control unit is further configured to control the start and operation of the washing pump after the water inlet to the dishwasher is completed; an acquisition unit is configured to acquire, during the operation of the washing pump, a flow rate fluctuation range of the water flow in the internal water channel in the dishwasher for allowing water to flow to the upper spray arm detected by the flow rate sensor, recorded as the current flow rate fluctuation range of the water flow in the internal water channel; the control unit is further configured to obtain the current flow rate fluctuation range of the water flow in the internal water channel according to the control unit; The current flow rate fluctuation range of the water flow in the inner water channel is used to determine whether the dishwasher is short of water, or whether there is no water in the dishwasher; the control unit is further configured to control the washing operation of the dishwasher to operate normally if it is determined that there is water in the dishwasher and there is no water shortage; the control unit is further configured to control the washing operation of the dishwasher to operate normally if it is determined that there is water in the dishwasher but there is no water shortage, and when the washing operation of the dishwasher is operating normally, water is added to the dishwasher according to the current flow rate fluctuation range of the water flow in the inner water channel, and the washing operation of the dishwasher is still controlled to operate normally after the water addition is completed; the control unit is further configured to control the dishwasher to stop if it is determined that there is no water in the dishwasher, and to add water to the dishwasher according to the model and capacity of the dishwasher, and to re-control the washing pump to start and operate after the water addition is completed.

[0012] In some embodiments, the control unit determines whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel, including: if it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel is equal to the standard flow velocity fluctuation range of the dishwasher, then it is determined that the dishwasher has water and is not short of water; if it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel is greater than the standard flow velocity fluctuation range of the dishwasher, then it is determined that the dishwasher has water but is short of water; if it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel is equal to 0, then it is determined that there is no water in the dishwasher.

[0013] In some embodiments, the control unit controls the dishwasher to operate normally in washing mode, and, when the washing mode of the dishwasher is operating normally, replenishes water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel, and continues to control the dishwasher to operate normally in washing mode after the water replenishment is completed, including: if the dishwasher is in a water heating state, controlling the dishwasher to stop heating and controlling the dishwasher to operate normally in washing mode; and, when the washing mode of the dishwasher is operating normally, replenishes water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel, continues to control the dishwasher to operate normally in washing mode after the water replenishment is completed, and controls the dishwasher to heat again after the water replenishment is completed; if the dishwasher is not in a water heating state, controlling the dishwasher to operate normally in washing mode; and, when the washing mode of the dishwasher is operating normally, replenishes water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel, and continues to control the dishwasher to operate normally in washing mode after the water replenishment is completed.

[0014] In some embodiments, the control unit controls the dishwasher to operate normally, and, when the washing operation of the dishwasher is operating normally, replenishes water into the dishwasher based on a current flow velocity fluctuation range of the water flow in the inner water channel, and continues to control the dishwasher to operate normally after the water replenishment is completed. The control unit further includes: if the current flow velocity fluctuation range of the water flow in the inner water channel is less than or equal to a first set flow velocity fluctuation range, replenishing a first set amount of water into the dishwasher when the washing operation of the dishwasher is operating normally, and continuing to control the dishwasher to operate normally after the water replenishment is completed; if the current flow velocity fluctuation range of the water flow in the inner water channel is greater than the first set flow velocity fluctuation range and less than a second set flow velocity fluctuation range, replenishing a second set amount of water into the dishwasher when the washing operation of the dishwasher is operating normally, and continuing to control the dishwasher to operate normally after the water replenishment is completed; if the current flow velocity fluctuation range of the water flow in the inner water channel is greater than or equal to the second set flow velocity fluctuation range, replenishing a third set amount of water into the dishwasher when the washing operation of the dishwasher is operating normally, and continuing to control the dishwasher to operate normally after the water replenishment is completed.

[0015] In some embodiments, the control unit controls the dishwasher to stop, replenishes water to the dishwasher according to the model and capacity of the dishwasher, and re-controls the washing pump to start and run after the water replenishment is completed, including: after controlling the dishwasher to stop, according to the correspondence between the set model, set capacity and set water replenishment amount, determining the set water replenishment amount corresponding to the set model and set capacity that are the same as the model and capacity of the dishwasher in the correspondence as the water replenishment amount that needs to be replenished to the dishwasher, and recording it as the current water replenishment amount of the dishwasher; replenishing water to the dishwasher according to the current water replenishment amount of the dishwasher, and re-controlling the washing pump to start and run after the water replenishment is completed.

[0016] In some embodiments, it also includes: the control unit is further configured to, when it is determined that there is water but lacks water in the dishwasher, replenish water into the dishwasher according to the current flow rate fluctuation range of the water flow in the internal water channel, and after the water replenishment is completed, still control the washing operation of the dishwasher to operate normally, if it is determined again that there is water but lacks water in the dishwasher or that the dishwasher is out of water, then determine that the dishwasher is in an abnormal state; the control unit is further configured to, when it is determined that there is no water in the dishwasher, replenish water into the dishwasher according to the model and capacity of the dishwasher, and after the water replenishment is completed, re-control the washing pump to start and run, if it is determined again that there is water but lacks water in the dishwasher or that the dishwasher is out of water, then determine that the dishwasher is in an abnormal state; the control unit is further configured to, when it is determined that the dishwasher is in an abnormal state, control the dishwasher to stop, and initiate a reminder message that the dishwasher is in an abnormal state.

[0017] Matching the above device, the present invention provides a dishwasher on another aspect, including: the control device of the dishwasher described above.

[0018] In accordance with the above method, the present invention further provides a storage medium, which includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the above-mentioned dishwasher control method.

[0019] Therefore, the solution of the present invention is to install a flow rate sensor 2 on the inner water channel 1 leading to the upper spray arm in the dishwasher for a dishwasher in which all spray arms rotate together, so as to use the flow rate sensor 2 to measure the flow rate fluctuation range of the water flow in the inner water channel 1; when the dishwasher is fully filled with water and the washing pump is started and running, the flow rate fluctuation range of the water flow in the inner water channel 1 measured by the flow rate sensor 2 is obtained as the flow rate fluctuation range V, and whether the dishwasher is short of water is determined according to the different flow rate intervals in which the flow rate fluctuation range V is located; and when it is determined that the dishwasher is short of water, if the flow rate fluctuation range V is greater than the flow rate fluctuation range V0, it is determined according to the flow rate fluctuation range V. Dynamic water replenishment amount, and when the washing operation of the dishwasher is normal, the water inlet solenoid valve of the dishwasher is controlled to replenish water according to the dynamic water replenishment amount; if the flow rate fluctuation range V is equal to 0, the static water replenishment amount is determined according to the model and capacity of the dishwasher, and after the dishwasher is controlled to stop, the water inlet solenoid valve of the dishwasher is controlled to replenish water according to the static water replenishment amount. Thus, by detecting the flow rate of the water flow in the inner water channel of the dishwasher, it is judged whether the water volume in the dishwasher is sufficient according to the flow rate of the water flow in the inner water channel of the dishwasher, and targeted water replenishment is performed according to the different flow rates of the water flow in the inner water channel of the dishwasher, which can achieve precise control of the water replenishment amount and avoid wasting water resources.

[0020] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention.

[0021] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 1. It is a flow chart of an embodiment of a method for controlling a dishwasher of the present invention;

[0023] Figure 2 This is a flow chart of an embodiment of the method of the present invention for replenishing water to a dishwasher when there is no water in the dishwasher;

[0024] Figure 3 1. A flow chart of an embodiment of a method for monitoring the number of times water is replenished in a dishwasher according to the present invention;

[0025] Figure 4 is a schematic structural diagram of an embodiment of a control device for a dishwasher of the present invention;

[0026] Figure 5 1 is a schematic structural diagram of an embodiment of a dishwasher, specifically a schematic structural diagram of the back of the dishwasher;

[0027] Figure 6 The present invention is a flow chart of an embodiment of a method for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water.

[0028] In conjunction with the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0029] 1- internal water channel; 2- flow rate sensor; 102- acquisition unit; 104- control unit. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all 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.

[0031] The amount of water in a dishwasher's wash cycle is measured by a water level pressure switch. If the amount of water in the dishwasher's water cup is too low and the water level pressure switch is mistakenly triggered, the dishwasher's protection logic will be activated and water will be refilled, resulting in a waste of water resources. Related solutions include monitoring the operating power of the dishwasher's DC wash pump to determine the water level status. However, these methods require multiple water inflow stages to ensure the pump operates at normal power levels, resulting in low water replenishment efficiency.

[0032] In addition, in a related solution, the water status of the dishwasher is detected by detecting the operating power of the dishwasher's DC washing pump. Since it is impossible to accurately determine the amount of water shortage, it is necessary to check whether there is water shortage again after each water intake. If there is water shortage, water will be added again; and the amount of water added cannot be accurately controlled. If too much water is added at one time, the dishwasher will be at risk of overflow.

[0033] Considering that, in related solutions, dishwashers generally have two washing modes: one is that all the spray arms of the dishwasher rotate together for washing, and the other is that all the spray arms of the dishwasher rotate in layers, that is, the upper and lower spray arms of all the spray arms of the dishwasher rotate separately. Regardless of which washing mode is used, the washing pump of the dishwasher delivers water to the upper spray arm when the maximum amount of water is needed. Therefore, the solution of the present invention proposes a control method for a dishwasher, specifically a method for determining whether the dishwasher is short of water and replenishing water when the dishwasher is short of water. By detecting the flow rate of water in the dishwasher's internal water channel, it is determined whether the amount of water in the dishwasher is sufficient based on the flow rate of water in the dishwasher's internal water channel, and targeted water replenishment is performed based on the different flow rates of water in the dishwasher's internal water channel. According to the different flow rates of water in the dishwasher's internal water channel, the water inlet solenoid valve is controlled to replenish water, which can achieve precise control of the water replenishment amount, avoid wasting water resources, and avoid the risk of overflow. At the same time, through precise water replenishment, the number of water replenishments can be reduced and the water replenishment efficiency can be improved.

[0034] According to an embodiment of the present invention, a method for controlling a dishwasher is provided. Figure 1 The flowchart of an embodiment of the method of the present invention is shown. The dishwasher has a spray arm and a washing pump. The number of the spray arms is n, where n is a positive integer. The n spray arms include at least an upper spray arm; the dishwasher is divided into upper and lower layers, and the upper spray arm is the spray arm located in the upper layer of the dishwasher. A flow rate sensor 2 is installed on the inner water channel 1 in the dishwasher for allowing water to flow to the upper spray arm. Specifically, Figure 5 FIG. 1 is a structural diagram of an embodiment of a dishwasher, specifically a schematic diagram of the back structure of the dishwasher. Figure 5 As shown, in the solution of the present invention, a flow rate sensor 2 is installed in the inner water channel 1 leading to the upper spray arm of the dishwasher. The flow rate sensor 2 is mounted on the outer wall of the inner water channel 1. When the inner water channel 1 is inside the dishwasher, the flow rate sensor 2 must be sealed to prevent water from entering the inner water channel 1 while also being able to measure the flow rate of the water in the inner water channel 1. For example, a waterproof cover can be placed around the flow rate sensor 2 and then mounted on the outer wall of the inner water channel 1. Alternatively, the flow rate sensor 2 can be mounted on the outer wall of the inner water channel 1 and then sealed and waterproofed with a waterproof cover. The dishwasher control method includes steps S110 to S170.

[0035] In step S110, after the dishwasher is started, water is controlled to flow into the dishwasher. Specifically, Figure 6 FIG. 1 is a flow chart of an embodiment of a method for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water. Figure 6 As shown, the method proposed by the solution of the present invention for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water includes: step 1, after the dishwasher is started, controlling the water intake of the dishwasher, and then executing step 2 to control the washing pump of the dishwasher to start and run.

[0036] At step S120, after the dishwasher is filled with water, the washing pump is controlled to start and run. Figure 6 As shown, the method proposed in the solution of the present invention for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water also includes: step 2, when the dishwasher completes water intake, controlling the washing pump of the dishwasher to start and run, and then executing step 3 to obtain the flow velocity fluctuation range of the water flow in the internal water channel 1 leading to the upper spray arm in the dishwasher as the flow velocity fluctuation range V.

[0037] At step S130, during the operation of the washing pump, the flow velocity fluctuation range of the water flow in the inner water channel 1 of the dishwasher for allowing water to flow to the upper spray arm is obtained, which is detected by the flow velocity sensor 2 and recorded as the current flow velocity fluctuation range of the water flow in the inner water channel 1. The flow velocity fluctuation range can be the flow velocity fluctuation range V.

[0038] Specifically, if Figure 6 As shown, the method proposed in the solution of the present invention for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water also includes: step 3, after controlling the washing pump of the dishwasher to start and operate in step 1, when the washing pump of the dishwasher is operating normally, that is, when it is determined that the dishwasher is operating normally, the flow velocity fluctuation range of the water flow in the internal water channel 1 leading to the upper spray arm in the dishwasher is obtained as the flow velocity fluctuation range V, and then step 4 is performed. When the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, the water shortage of the dishwasher can be determined relatively accurately according to the different flow velocity fluctuation ranges within the flow velocity fluctuation range V.

[0039] In step S140, it is determined whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1. The situation where there is no water in the dishwasher specifically refers to that there is indeed no water in the dishwasher, or that there is a small amount of water in the dishwasher but the water shortage is so severe that the dishwasher cannot operate normally. Specifically, Figure 6 As shown, the method for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water proposed by the solution of the present invention also includes: Step 4, when the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, the different flow velocity fluctuation ranges within the flow velocity fluctuation range V can be used to relatively accurately determine the amount of water shortfall in the dishwasher.

[0040] In some embodiments, determining whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow rate fluctuation range of the water flow in the inner water channel 1 in step S140 includes any of the following determination situations:

[0041] First determination scenario: If the current flow velocity fluctuation range of the water flow in the internal water channel 1 is determined to be equal to the standard flow velocity fluctuation range of the dishwasher, then the dishwasher is determined to have water and is not short of water. The standard flow velocity fluctuation range of the dishwasher is greater than 0. The standard flow velocity fluctuation range of the dishwasher is the flow velocity fluctuation range of the internal water channel 1 used to convey water to the upper spray arm in the dishwasher under normal operation, such as the flow velocity fluctuation range V0.

[0042] The second determination scenario: if it is determined that the current flow rate fluctuation range of the water flow in the inner water channel 1 is greater than the standard flow rate fluctuation range of the dishwasher, it is determined that the dishwasher has water but is short of water.

[0043] The third determination scenario: if it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel 1 is equal to 0, it is determined that the dishwasher has no water.

[0044] Specifically, if Figure 6 As shown, the method proposed by the solution of the present invention for determining whether the dishwasher is short of water and replenishing water when the dishwasher is short of water also includes: in step 4, during the operation of the dishwasher, when the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, the different flow velocity fluctuation ranges within the flow velocity fluctuation range V can be used to relatively accurately determine the amount of water shortfall in the dishwasher, specifically including the following steps (such as step 41 and step 42).

[0045] Step 41: During the operation of the dishwasher, when the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, and the flow velocity fluctuation range V is equal to the flow velocity fluctuation range V0, the washing operation of the dishwasher is controlled to operate normally.

[0046] Step 42: During the operation of the dishwasher, when the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm of the dishwasher is the flow velocity fluctuation range V, and the flow velocity fluctuation range V exceeds the flow velocity fluctuation range V0, the washing operation of the dishwasher is controlled to operate normally, and the process of determining whether the dishwasher is short of water is entered.

[0047] In step S150 , if it is determined that there is water in the dishwasher and there is no water shortage, the washing operation of the dishwasher is controlled to run normally.

[0048] At step S160, if it is determined that there is water in the dishwasher but is short of water, the washing operation of the dishwasher is controlled to operate normally, and when the washing operation of the dishwasher is operating normally, water is replenished into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel 1, and the washing operation of the dishwasher is still controlled to operate normally after the water replenishment is completed. Thereafter, during the normal operation of the washing operation of the dishwasher, the flow velocity fluctuation range of the inner water channel 1 in the dishwasher for allowing water to pass to the upper spray arm detected by the flow velocity sensor 2 can be re-obtained to re-determine whether there is a lack of water in the dishwasher or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1.

[0049] In some embodiments, in step S160, when it is determined that the dishwasher has water but is short of water, the dishwasher is controlled to operate normally for washing, and when the dishwasher is operating normally for washing, water is added to the dishwasher according to the current flow rate fluctuation range of the water flow in the inner water channel 1, and the dishwasher is still controlled to operate normally for washing after the water addition is completed, including any of the following control situations of the dishwasher state before and after the water addition:

[0050] The first scenario for controlling the dishwasher's status before and after water replenishment: If it is determined that the dishwasher has water but is short of water, and if the dishwasher is in the water heating state, the dishwasher is controlled to stop heating and the washing operation is controlled to operate normally. Furthermore, if the dishwasher is operating normally, water is replenished according to the current flow velocity fluctuation range of the water flow in the internal water channel 1. After the water replenishment is completed, the dishwasher is controlled to continue the washing operation normally and is controlled to reheat after the water replenishment is completed.

[0051] The second scenario for controlling the dishwasher's status before and after water replenishment: If it is determined that the dishwasher has water but is short of water, and the dishwasher is not in the water heating state, the dishwasher is controlled to operate normally. Furthermore, if the dishwasher is operating normally, water is replenished based on the current flow velocity fluctuation range of the water flow in the internal water channel 1. After the water replenishment is completed, the dishwasher is controlled to continue operating normally.

[0052] Specifically, if Figure 6 As shown, the method for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water, as provided in the solution of the present invention, further includes: in step 42, during operation of the dishwasher, when the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm of the dishwasher is within the flow velocity fluctuation range V, and the flow velocity fluctuation range V exceeds the flow velocity fluctuation range V0, if the dishwasher is currently in the water heating state, the dishwasher is controlled to stop heating, but the washing operation of the dishwasher continues normally, and the process proceeds to the following determination steps, such as the determination steps 421 to 424. Of course, if the dishwasher is not in the water heating state, the washing operation of the dishwasher is controlled to continue normally, i.e., the washing operation of the dishwasher continues normally, and the process proceeds to the following determination steps, such as the determination steps 421 to 424.

[0053] In some embodiments, in step S160, when it is determined that there is water in the dishwasher but water is insufficient, the washing operation of the dishwasher is controlled to operate normally, and when the washing operation of the dishwasher is operating normally, water is added to the dishwasher according to the current flow rate fluctuation range of the water flow in the inner water channel 1, and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally, and any of the following situations of controlling the water addition process is also included.

[0054] Before implementing the solution of the present invention, the flow velocity fluctuation range of the water flowing in the inner water channel 1 leading to the upper spray arm of the dishwasher during normal operation is first determined as flow velocity fluctuation range V0. When the dishwasher is short of water, water accumulates in the inner water channel 1 leading to the upper spray arm, and it takes time for the water sprayed from the upper spray arm to reach the wash pump. Therefore, the flow velocity detected by flow velocity sensor 2 in inner water channel 1 fluctuates. Experimental measurements show that when the amount of water shortfall is L1, the flow velocity fluctuation range detected by flow velocity sensor 2 in inner water channel 1 leading to the upper spray arm is V1. When the amount of water shortfall is L2, the flow velocity fluctuation range detected by flow velocity sensor 2 in inner water channel 1 leading to the upper spray arm is V2. Flow velocity fluctuation range V2 is greater than flow velocity fluctuation range V1, meaning that flow velocity fluctuation range V1 is a subset of flow velocity fluctuation range V2, and water volume L2 is greater than water volume L1. It can be seen that different flow rate fluctuation ranges detected by the flow rate sensor 2 on the inner water channel 1 leading to the upper spray arm of the dishwasher correspond to different water shortages. In other words, there is a certain correspondence between the flow rate fluctuation range and the water shortage. Therefore, the water shortage of the dishwasher can be determined relatively accurately based on the different flow rate fluctuation ranges detected by the flow rate sensor 2 on the inner water channel 1 leading to the upper spray arm of the dishwasher. Therefore, when it is determined that the dishwasher has water but is short of water, the dishwasher's washing operation is controlled to operate normally. When the dishwasher's washing operation is operating normally, water is added to the dishwasher based on the current flow rate fluctuation range of the water flow in the inner water channel 1. After the water is added, the dishwasher's washing operation is still controlled to operate normally. Any of the above situations of controlling the water replenishment process can be specifically described in the following exemplary embodiments.

[0055] The first situation of controlling the water replenishment process: when the current flow velocity fluctuation range of the water flow in the inner water channel 1 is greater than the standard flow velocity fluctuation range of the dishwasher, if the current flow velocity fluctuation range of the water flow in the inner water channel 1 is less than or equal to the first set flow velocity fluctuation range, then when the washing operation of the dishwasher is operating normally, the first set amount of water is replenished into the dishwasher, and after the water replenishment is completed, the washing operation of the dishwasher is still controlled to operate normally. Afterwards, during the normal operation of the washing operation of the dishwasher, the flow velocity fluctuation range of the inner water channel 1 in the dishwasher for allowing water to pass to the upper spray arm detected by the flow velocity sensor 2 can be re-obtained to re-determine whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1. The first set flow velocity fluctuation range is such as the flow velocity fluctuation range V1, and the first set water volume is such as the water volume L1. Specifically, if Figure 6As shown, the method proposed by the solution of the present invention for determining whether the dishwasher is short of water and replenishing water when the dishwasher is short of water also includes: step 421, if the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, and the flow velocity fluctuation range V is less than or equal to the flow velocity fluctuation range V1, then it is determined that the amount of water that the dishwasher needs to replenish is the water amount L1, and when the washing operation of the dishwasher is operating normally, water is replenished according to the water amount L1. After the water replenishment according to the water amount L1 is completed, the washing operation of the dishwasher is controlled to operate normally. Of course, if the dishwasher is in a water heating state before the water replenishment operation, the heating function of the dishwasher is restarted.

[0056] The first situation of controlling the water replenishment process: when the current flow velocity fluctuation range of the water flow in the inner water channel 1 is greater than the standard flow velocity fluctuation range of the dishwasher, if the current flow velocity fluctuation range of the water flow in the inner water channel 1 is greater than the first set flow velocity fluctuation range and less than the second set flow velocity fluctuation range, then when the washing operation of the dishwasher is operating normally, the second set water volume is replenished into the dishwasher, and after the water replenishment is completed, the washing operation of the dishwasher is still controlled to operate normally. Afterwards, during the normal operation of the washing operation of the dishwasher, the flow velocity fluctuation range of the inner water channel 1 in the dishwasher for allowing water to flow to the upper spray arm detected by the flow velocity sensor 2 can be re-obtained to re-determine whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1. The second set flow velocity fluctuation range is such as the flow velocity fluctuation range V2, and the second set water volume is such as the water volume L2. Specifically, Figure 6 As shown, the method for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water proposed in the solution of the present invention also includes: step 422, if the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, and the flow velocity fluctuation range V is greater than the flow velocity fluctuation range V1 and less than the flow velocity fluctuation range V2, then it is determined that the amount of water that the dishwasher needs to replenish is the water amount L2, and when the washing operation of the dishwasher is operating normally, water is replenished according to the water amount L2. After the water replenishment according to the water amount L2 is completed, the washing operation of the dishwasher is controlled to operate normally. Of course, if the dishwasher is in a water heating state before the water replenishment operation, the heating function of the dishwasher is restarted.

[0057] The third situation for controlling the water replenishment process: when the current flow velocity fluctuation range of the water flow in the inner water channel 1 is greater than the standard flow velocity fluctuation range of the dishwasher, if the current flow velocity fluctuation range of the water flow in the inner water channel 1 is greater than or equal to the second set flow velocity fluctuation range, then when the washing operation of the dishwasher is operating normally, the third set water volume is replenished into the dishwasher, and after the water replenishment is completed, the washing operation of the dishwasher is still controlled to operate normally. Afterwards, during the normal operation of the washing operation of the dishwasher, the flow velocity fluctuation range of the inner water channel 1 in the dishwasher for allowing water to flow to the upper spray arm detected by the flow velocity sensor 2 can be re-obtained to re-determine whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1. The third set water volume is such as water volume L2. Specifically, such as Figure 6 As shown, the method for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water proposed in the solution of the present invention also includes: step 423, if the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, and the flow velocity fluctuation range V is greater than or equal to the flow velocity fluctuation range V2, then it is determined that the amount of water that the dishwasher needs to replenish is water volume L3, and when the washing operation of the dishwasher is operating normally, water is replenished according to the water volume L3. After the water replenishment according to the water volume L3 is completed, the washing operation of the dishwasher is controlled to operate normally. Of course, if the dishwasher is in a water heating state before the water replenishment operation, the heating function of the dishwasher is restarted.

[0058] At step S170, if it is determined that the dishwasher is out of water, the dishwasher is controlled to stop, and water is added to the dishwasher according to the model and capacity of the dishwasher. After the water addition is completed, the washing pump is controlled to start and run again. Thereafter, during the operation of the washing pump, the flow velocity fluctuation range of the internal water channel 1 in the dishwasher for allowing water to flow to the upper spray arm detected by the flow velocity sensor 2 is re-obtained, so as to re-determine whether there is a lack of water in the dishwasher or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the internal water channel 1.

[0059] The present invention proposes a method for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water. A flow rate sensor 2 is installed on the dishwasher's internal water channel 1, for example, in the internal water channel 1 leading to the upper spray arm. The flow rate sensor 2 measures the flow rate in the dishwasher's internal water channel 1 to determine whether the dishwasher has sufficient water. The detected data directly determines the water volume difference, and the amount of water replenished can be precisely controlled based on the water volume difference. The water inlet solenoid valve of the dishwasher is controlled to replenish water according to the specific water shortage, thereby avoiding water waste and the risk of overflow. Furthermore, precise water replenishment can reduce the number of refills and improve refill efficiency.

[0060] In some embodiments, in step S170, when it is determined that the dishwasher is out of water, the dishwasher is controlled to stop, and water is added to the dishwasher according to the model and capacity of the dishwasher, and the washing pump is controlled to start and run again after the water addition is completed. For the specific process, please refer to the following exemplary description.

[0061] The following combination Figure 2 The flowchart of an embodiment of the method of the present invention for replenishing water to the dishwasher when there is no water in the dishwasher further illustrates the specific process of replenishing water to the dishwasher when there is no water in step S170, including steps S210 to S220.

[0062] In step S210, after the dishwasher is controlled to stop, based on the correspondence between the set model, the set capacity, and the set water replenishment amount, the set water replenishment amount corresponding to the set model and the set capacity that are the same as the model and capacity of the dishwasher in the correspondence is determined as the water replenishment amount that needs to be replenished to the dishwasher, and recorded as the current water replenishment amount of the dishwasher.

[0063] In step S220, water is replenished into the dishwasher according to the current water replenishment amount of the dishwasher, and the washing pump is re-controlled to start and operate after the water replenishment is completed. Thereafter, during the operation of the washing pump, the flow velocity fluctuation range of the internal water channel 1 in the dishwasher for allowing water to flow to the upper spray arm, detected by the flow velocity sensor 2, is re-obtained, so as to re-determine whether there is a lack of water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the internal water channel 1, or determine whether there is no water in the dishwasher.

[0064] Specifically, if Figure 6 As shown, the method for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water, according to the present invention, further includes: Step 424: If the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the inner water channel 1 leading to the upper spray arm of the dishwasher is consistently zero, then the dishwasher is controlled to pause operation and replenish water in an amount of water Y. The amount of water Y is determined to ensure that the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the inner water channel 1 leading to the upper spray arm of the dishwasher is not consistently zero when the flow velocity is retested after replenishment. After replenishing water in accordance with the amount of water Y, the process returns to Step 2, restarting the dishwasher's wash pump to re-measure the flow velocity fluctuation range of the water flow in the inner water channel 1 via the flow velocity sensor 2 on the inner water channel 1 leading to the upper spray arm, and then re-executing Steps 3 and 4. The amount of water Y is determined based on the model and capacity of the dishwasher.

[0065] In some embodiments, the method for controlling a dishwasher according to the solution of the present invention further includes a process of monitoring the number of times water is replenished into the dishwasher.

[0066] The following combination Figure 3 The flowchart of an embodiment of the method of the present invention for monitoring the number of times water is replenished in the dishwasher is shown, which further illustrates the specific process of monitoring the number of times water is replenished in the dishwasher, including: step S310 to step S330.

[0067] In step S310, when it is determined that there is water but there is no water in the dishwasher, water has been added to the dishwasher according to the current flow rate fluctuation range of the water flow in the inner water channel 1, and the washing operation of the dishwasher is still controlled to operate normally after the water addition is completed. If it is again determined that there is water but there is no water in the dishwasher or that there is no water in the dishwasher, then it is determined that the dishwasher is in an abnormal state.

[0068] In step S320, when it is determined that the dishwasher is out of water, water is added to the dishwasher according to the model and capacity of the dishwasher, and after the water addition is completed, the washing pump is controlled to start and run again. If it is again determined that there is water in the dishwasher but it is short of water or that the dishwasher is out of water, then it is determined that the dishwasher is in an abnormal state.

[0069] Step S330: When it is determined that the dishwasher is in an abnormal state, the dishwasher is controlled to stop, and a reminder message indicating that the dishwasher is in an abnormal state is sent.

[0070] Specifically, the solution of the present invention is applied to a dishwasher in which all spray arms rotate together. For any of steps 421, 422, 423, and 424, if the dishwasher detects flow rate fluctuations in water channel 1 in the dishwasher again after performing a water replenishment operation, the control system of the dishwasher determines that the dishwasher is in an abnormal state, controls the dishwasher to stop operation, and reports a fault to the outside through the display module to remind the user to check whether there is a phenomenon of water storage when placing dishes, or to request after-sales repair.

[0071] The present invention employs a flow rate sensor 2 installed in the dishwasher's internal water channel 1. This sensor detects fluctuations in the flow rate within the dishwasher's internal water channel 1 to determine whether the dishwasher is experiencing a water shortage. Furthermore, by distinguishing the range of flow rate fluctuations, the amount of water shortage can be determined with relative accuracy. By precisely controlling the dishwasher's water supply, the exact amount of water shortage can be accurately detected when the dishwasher is experiencing a water shortage. The water inlet solenoid valve is then controlled to replenish water accordingly, thus avoiding water waste. Furthermore, this precise replenishment reduces the number of refills, thereby improving refill efficiency.

[0072] Using the technical solution of this embodiment, a flow sensor 2 is installed on the inner water channel 1 leading to the upper spray arm of a dishwasher in which all spray arms rotate together. This flow sensor 2 measures the flow velocity fluctuation range of the water in the inner water channel 1. When the dishwasher is fully filled with water and the wash pump is started and running, the flow velocity fluctuation range of the water in the inner water channel 1 measured by the flow sensor 2 is obtained as the flow velocity fluctuation range V. Based on the different flow velocity intervals within the flow velocity fluctuation range V, it is determined whether the dishwasher is short of water. If the dishwasher is determined to be short of water, if the flow velocity fluctuation range V is greater than the flow velocity fluctuation range V0, a ​​dynamic water replenishment amount is determined based on the flow velocity fluctuation range V. When the dishwasher is operating normally, the dynamic water replenishment amount is used to control the dishwasher's water inlet solenoid valve to replenish water. If the flow rate fluctuation range V is equal to 0, the static water replenishment amount is determined according to the model and capacity of the dishwasher, and after the dishwasher is controlled to stop, the water inlet solenoid valve of the dishwasher is controlled to replenish water according to the static water replenishment amount. Therefore, by detecting the flow rate of the water flow in the inner water channel of the dishwasher, it is judged whether the water amount in the dishwasher is sufficient according to the flow rate of the water flow in the inner water channel of the dishwasher, and targeted water replenishment is performed according to the different flow rates of the water flow in the inner water channel of the dishwasher, the water replenishment amount can be accurately controlled to avoid wasting water resources.

[0073] According to an embodiment of the present invention, a control device for a dishwasher corresponding to the control method for the dishwasher is also provided. Figure 4 The structural diagram of an embodiment of the device of the present invention is shown. The dishwasher has a spray arm and a washing pump. The number of the spray arms is n, where n is a positive integer. The n spray arms include at least an upper spray arm. A flow rate sensor 2 is installed on the inner water channel 1 in the dishwasher for allowing water to flow to the upper spray arm. Specifically, Figure 5 FIG. 1 is a structural diagram of an embodiment of a dishwasher, specifically a schematic diagram of the back structure of the dishwasher. Figure 5 As shown, in the solution of the present invention, a flow rate sensor 2 is installed in the inner water channel 1 leading to the upper spray arm of the dishwasher. The flow rate sensor 2 is mounted on the outer wall of the inner water channel 1. When the inner water channel 1 is inside the dishwasher, the flow rate sensor 2 must be sealed to prevent water from entering the inner water channel 1 while also being able to measure the flow rate of the water in the inner water channel 1. For example, a waterproof cover can be provided around the flow rate sensor 2 and then mounted on the outer wall of the inner water channel 1. Alternatively, the flow rate sensor 2 can be mounted on the outer wall of the inner water channel 1 and then sealed and waterproofed with a waterproof cover. The control device for the dishwasher includes an acquisition unit 102 and a control unit 104.

[0074] The control unit 104 is configured to control water intake of the dishwasher after the dishwasher is started. Specifically, Figure 6 FIG. 1 is a flow chart of an embodiment of a device for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water. Figure 6 As shown, the present invention proposes a device for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water, including: step 1, after the dishwasher is started, controlling the dishwasher to enter water, and then executing step 2 to control the dishwasher's wash pump to start and operate. The specific functions and processing of the control unit 104 are shown in step S110.

[0075] The control unit 104 is further configured to control the washing pump to start and operate after the dishwasher has completed water intake. Figure 6 As shown, the device for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water, as provided in the solution of the present invention, further includes: Step 2, when the dishwasher is fully filled with water, controlling the washing pump of the dishwasher to start and operate, and then executing Step 3 to obtain a flow velocity fluctuation range of the water flow in the internal water channel 1 leading to the upper spray arm of the dishwasher as a flow velocity fluctuation range V. The specific functions and processing of the control unit 104 are also referred to in Step S120.

[0076] Acquisition unit 102 is configured to, during operation of the wash pump, acquire a flow velocity fluctuation range of water in internal water channel 1 of the dishwasher, which is used to convey water to the upper spray arm, as detected by flow velocity sensor 2. This range is recorded as a current flow velocity fluctuation range of the water in internal water channel 1. This flow velocity fluctuation range may be flow velocity fluctuation range V. The specific functions and processing of acquisition unit 102 are described in step S130.

[0077] Specifically, if Figure 6 As shown, the device for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water proposed in the solution of the present invention also includes: step 3, after controlling the washing pump of the dishwasher to start and operate in step 1, when the washing pump of the dishwasher is operating normally, that is, when it is determined that the dishwasher is operating normally, the flow velocity fluctuation range of the water flow in the internal water channel 1 leading to the upper spray arm in the dishwasher is obtained as the flow velocity fluctuation range V, and then step 4 is performed. When the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, the water shortage of the dishwasher can be determined relatively accurately according to the different flow velocity fluctuation ranges within the flow velocity fluctuation range V.

[0078] The control unit 104 is further configured to determine whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1. The specific functions and processing of the control unit 104 are also shown in step S140. The situation where there is no water in the dishwasher specifically refers to that there is indeed no water in the dishwasher, or that there is a small amount of water in the dishwasher but it is seriously short of water to the extent that it cannot operate normally. Specifically, Figure 6As shown, the device for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water proposed in the solution of the present invention also includes: Step 4, when the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, the different flow velocity fluctuation ranges within the flow velocity fluctuation range V can relatively accurately determine the amount of water shortfall in the dishwasher.

[0079] In some embodiments, the control unit 104 determines whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow rate fluctuation range of the water flow in the inner water channel 1, including any of the following determination situations:

[0080] First determination scenario: The control unit 104 is further configured to determine that the dishwasher has water and is not short of water if it is determined that the current flow rate fluctuation range of the water flow in the internal water channel 1 is equal to the standard flow rate fluctuation range of the dishwasher. The standard flow rate fluctuation range of the dishwasher is greater than 0. The standard flow rate fluctuation range of the dishwasher is the flow rate fluctuation range of the internal water channel 1 in the dishwasher, which is used to pass water to the upper spray arm, when the dishwasher is operating normally, such as the flow rate fluctuation range V0.

[0081] The second determination scenario: the control unit 104 is further configured to determine that the dishwasher has water but is short of water if it is determined that the current flow rate fluctuation range of the water flow in the inner water channel 1 is greater than the standard flow rate fluctuation range of the dishwasher.

[0082] A third determination scenario: the control unit 104 is further configured to determine that the dishwasher has no water if it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel 1 is equal to 0.

[0083] Specifically, if Figure 6 As shown, the device for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water proposed in the solution of the present invention also includes: in step 4, during the operation of the dishwasher, when the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, the different flow velocity fluctuation ranges within the flow velocity fluctuation range V can be used to relatively accurately determine the amount of water shortfall in the dishwasher, specifically including the following steps (such as step 41 and step 42).

[0084] Step 41: During the operation of the dishwasher, when the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, and the flow velocity fluctuation range V is equal to the flow velocity fluctuation range V0, the washing operation of the dishwasher is controlled to operate normally.

[0085] Step 42: During the operation of the dishwasher, when the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm of the dishwasher is the flow velocity fluctuation range V, and the flow velocity fluctuation range V exceeds the flow velocity fluctuation range V0, the washing operation of the dishwasher is controlled to operate normally, and the process of determining whether the dishwasher is short of water is entered.

[0086] The control unit 104 is further configured to control the dishwasher to operate normally if it is determined that there is water in the dishwasher and there is no water shortage. The specific functions and processing of the control unit 104 are also shown in step S150.

[0087] The control unit 104 is further configured to, if it is determined that the dishwasher contains water but is short of water, control the dishwasher to operate normally for washing. If the dishwasher is operating normally for washing, water is added to the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1. After the water is added, the control unit 104 is configured to continue operating normally for washing. Thereafter, during the normal operation of the dishwasher for washing, the flow velocity fluctuation range of the inner water channel 1 in the dishwasher, which is used to pass water to the upper spray arm, detected by the flow velocity sensor 2, can be re-acquired to re-determine whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1. The specific functions and processing of the control unit 104 are further described in step S160.

[0088] In some embodiments, the control unit 104, when determining that there is water in the dishwasher but water is insufficient, controls the dishwasher to operate normally for washing, and when the dishwasher operates normally for washing, replenishes water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel 1, and controls the dishwasher to operate normally for washing after the water replenishment is completed, including any of the following control situations of the dishwasher state before and after water replenishment:

[0089] In the first scenario of controlling the dishwasher's status before and after water replenishment, the control unit 104 is further configured to, upon determining that the dishwasher has water but is short of water, control the dishwasher to stop heating the water if the dishwasher is in the water heating state, and control the dishwasher to operate normally during the washing operation. Furthermore, if the dishwasher is operating normally during the washing operation, water is replenished in the dishwasher based on the current flow velocity fluctuation range of the water flow in the internal water channel 1, and after the water replenishment is completed, the dishwasher is controlled to continue operating normally during the washing operation, and after the water replenishment is completed, the dishwasher is controlled to reheat.

[0090] Second scenario for controlling the dishwasher's status before and after water replenishment: The control unit 104 is further configured to, if it is determined that the dishwasher has water but is short of water, control the dishwasher to operate normally if the dishwasher is not in the water heating state. Furthermore, if the dishwasher is operating normally, water is replenished in the dishwasher based on the current flow velocity fluctuation range of the water flow in the internal water channel 1, and the dishwasher is still controlled to operate normally after the water replenishment is completed.

[0091] Specifically, if Figure 6 As shown, the apparatus for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water, as provided in the present invention, further includes: in step 42, during operation of the dishwasher, when the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm of the dishwasher is within the flow velocity fluctuation range V, and the flow velocity fluctuation range V exceeds the flow velocity fluctuation range V0, if the dishwasher is currently in the water heating state, the dishwasher is controlled to stop heating, but the washing operation of the dishwasher continues normally, and the process proceeds to the following determination steps, such as the determination steps 421 to 424. Of course, if the dishwasher is not in the water heating state, the washing operation of the dishwasher is controlled to continue normally, i.e., the washing operation of the dishwasher continues normally, and the process proceeds to the following determination steps, such as the determination steps 421 to 424.

[0092] In some embodiments, when it is determined that there is water in the dishwasher but water is insufficient, the control unit 104 controls the dishwasher to operate normally for washing, and when the dishwasher operates normally for washing, replenishes water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel 1, and controls the dishwasher to operate normally for washing after the water replenishment is completed. The control of the water replenishment process also includes any of the following situations:

[0093] Before implementing the solution of the present invention, the flow velocity fluctuation range of the water flowing in the inner water channel 1 leading to the upper spray arm of the dishwasher during normal operation is first determined as flow velocity fluctuation range V0. When the dishwasher is short of water, water accumulates in the inner water channel 1 leading to the upper spray arm, and it takes time for the water sprayed from the upper spray arm to reach the wash pump. Therefore, the flow velocity detected by flow velocity sensor 2 in inner water channel 1 fluctuates. Experimental measurements show that when the amount of water shortfall is L1, the flow velocity fluctuation range detected by flow velocity sensor 2 in inner water channel 1 leading to the upper spray arm is V1. When the amount of water shortfall is L2, the flow velocity fluctuation range detected by flow velocity sensor 2 in inner water channel 1 leading to the upper spray arm is V2. Flow velocity fluctuation range V2 is greater than flow velocity fluctuation range V1, meaning that flow velocity fluctuation range V1 is a subset of flow velocity fluctuation range V2, and water volume L2 is greater than water volume L1. It can be seen that different flow rate fluctuation ranges detected by the flow rate sensor 2 on the inner water channel 1 leading to the upper spray arm of the dishwasher correspond to different water shortages. In other words, there is a certain correspondence between the flow rate fluctuation range and the water shortage. Therefore, the water shortage of the dishwasher can be determined relatively accurately based on the different flow rate fluctuation ranges detected by the flow rate sensor 2 on the inner water channel 1 leading to the upper spray arm of the dishwasher. Therefore, when it is determined that the dishwasher has water but is short of water, the dishwasher's washing operation is controlled to operate normally. When the dishwasher's washing operation is operating normally, water is added to the dishwasher based on the current flow rate fluctuation range of the water flow in the inner water channel 1. After the water is added, the dishwasher's washing operation is still controlled to operate normally. Any of the above situations of controlling the water replenishment process can be specifically described in the following exemplary embodiments.

[0094] The first scenario of controlling the water replenishment process: the control unit 104 is further configured to, when the current flow velocity fluctuation range of the water flow in the inner water channel 1 is greater than the standard flow velocity fluctuation range of the dishwasher, if the current flow velocity fluctuation range of the water flow in the inner water channel 1 is less than or equal to the first set flow velocity fluctuation range, then when the washing operation of the dishwasher is operating normally, replenish the dishwasher with a first set amount of water, and still control the washing operation of the dishwasher to operate normally after the water replenishment is completed. Afterwards, during the normal operation of the washing operation of the dishwasher, the flow velocity fluctuation range of the inner water channel 1 in the dishwasher for allowing water to flow to the upper spray arm detected by the flow velocity sensor 2 can be re-obtained to re-determine whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1. The first set flow velocity fluctuation range is such as the flow velocity fluctuation range V1, and the first set water volume is such as the water volume L1. Specifically, as Figure 6As shown, the device for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water proposed in the solution of the present invention also includes: step 421, if the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, and the flow velocity fluctuation range V is less than or equal to the flow velocity fluctuation range V1, then it is determined that the amount of water that the dishwasher needs to replenish is the water amount L1, and when the washing operation of the dishwasher is operating normally, water is replenished according to the water amount L1. After the water replenishment according to the water amount L1 is completed, the washing operation of the dishwasher is controlled to operate normally. Of course, if the dishwasher is in a water heating state before the water replenishment operation, the heating function of the dishwasher is restarted.

[0095] The first scenario of controlling the water replenishment process: the control unit 104 is further configured to, when the current flow velocity fluctuation range of the water flow in the inner water channel 1 is greater than the standard flow velocity fluctuation range of the dishwasher, if the current flow velocity fluctuation range of the water flow in the inner water channel 1 is greater than the first set flow velocity fluctuation range and less than the second set flow velocity fluctuation range, then when the washing operation of the dishwasher is operating normally, replenish the dishwasher with a second set amount of water, and after the water replenishment is completed, still control the washing operation of the dishwasher to operate normally. Afterwards, during the normal operation of the washing operation of the dishwasher, the flow velocity fluctuation range of the inner water channel 1 in the dishwasher for allowing water to flow to the upper spray arm detected by the flow velocity sensor 2 can be re-obtained to re-determine whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1. The second set flow velocity fluctuation range is such as the flow velocity fluctuation range V2, and the second set water volume is such as the water volume L2. Specifically, as Figure 6 As shown, the device for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water proposed in the solution of the present invention also includes: step 422, if the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, and the flow velocity fluctuation range V is greater than the flow velocity fluctuation range V1 and less than the flow velocity fluctuation range V2, then it is determined that the amount of water that the dishwasher needs to replenish is the water amount L2, and when the washing operation of the dishwasher is normally operating, water is replenished according to the water amount L2. After the water replenishment according to the water amount L2 is completed, the washing operation of the dishwasher is controlled to operate normally. Of course, if the dishwasher is in a water heating state before the water replenishment operation, the heating function of the dishwasher is restarted.

[0096] The third situation of controlling the water replenishment process: the control unit 104 is further configured to, when the current flow velocity fluctuation range of the water flow in the inner water channel 1 is greater than the standard flow velocity fluctuation range of the dishwasher, if the current flow velocity fluctuation range of the water flow in the inner water channel 1 is greater than or equal to the second set flow velocity fluctuation range, then when the washing operation of the dishwasher is operating normally, replenish the dishwasher with a third set amount of water, and still control the washing operation of the dishwasher to operate normally after the water replenishment is completed. Afterwards, during the normal operation of the washing operation of the dishwasher, the flow velocity fluctuation range of the inner water channel 1 in the dishwasher for allowing water to flow to the upper spray arm detected by the flow velocity sensor 2 can be re-obtained to re-determine whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the inner water channel 1. The third set water volume is such as water volume L2. Specifically, such as Figure 6 As shown, the device for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water proposed in the solution of the present invention also includes: step 423, if the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the internal water channel 1 leading to the upper spray arm in the dishwasher is the flow velocity fluctuation range V, and the flow velocity fluctuation range V is greater than or equal to the flow velocity fluctuation range V2, then it is determined that the amount of water that the dishwasher needs to replenish is water volume L3, and when the washing operation of the dishwasher is operating normally, water is replenished according to the water volume L3. After the water replenishment according to the water volume L3 is completed, the washing operation of the dishwasher is controlled to operate normally. Of course, if the dishwasher is in a water heating state before the water replenishment operation, the heating function of the dishwasher is restarted.

[0097] The control unit 104 is further configured to, if it is determined that the dishwasher is out of water, control the dishwasher to shut down, and replenish water to the dishwasher based on the model and capacity of the dishwasher. After the water replenishment is completed, control the washing pump to restart and operate again. Thereafter, while the washing pump is operating, the flow velocity fluctuation range of the internal water channel 1 in the dishwasher, which is used to pass water to the upper spray arm, detected by the flow velocity sensor 2, is re-acquired. Based on the current flow velocity fluctuation range of the water flow in the internal water channel 1, whether the dishwasher is short of water or whether the dishwasher is out of water is determined. The specific functions and processing of the control unit 104 are further described in step S170.

[0098] The present invention proposes a device for determining whether a dishwasher is short of water and replenishing water when it is. A flow rate sensor 2 is installed in the dishwasher's internal water channel 1, for example, in the internal water channel 1 leading to the upper spray arm. The flow rate sensor 2 measures the flow rate in the dishwasher's internal water channel 1 to determine whether the dishwasher has sufficient water. The detected data directly determines the water volume difference, and the amount of water replenished can be precisely controlled based on the water volume difference. The water inlet solenoid valve of the dishwasher is controlled to replenish water according to the specific water shortage, thereby avoiding water waste and the risk of overflow. Furthermore, precise water replenishment can reduce the number of refills and improve refill efficiency.

[0099] In some embodiments, the control unit 104, when determining that the dishwasher is out of water, controls the dishwasher to stop, replenishes water to the dishwasher according to the model and capacity of the dishwasher, and controls the washing pump to start and operate again after the water replenishment is completed, including:

[0100] The control unit 104 is further configured to, after the dishwasher is shut down, determine, based on a correspondence between a set model, a set capacity, and a set water replenishment amount, the set water replenishment amount corresponding to the model and capacity of the dishwasher, as the water replenishment amount required to be replenished to the dishwasher, and record this as the current water replenishment amount of the dishwasher. The specific functions and processing of the control unit 104 are further described in step S210.

[0101] The control unit 104 is further configured to replenish water to the dishwasher according to the current water replenishment amount of the dishwasher, and to re-control the washing pump to restart and operate after the water replenishment is completed. Thereafter, while the washing pump is operating, the control unit 104 re-acquires the flow velocity fluctuation range of the internal water channel 1 in the dishwasher, which is used to pass water to the upper spray arm, as detected by the flow velocity sensor 2, to re-determine whether the dishwasher is short of water or whether there is no water in the dishwasher based on the current flow velocity fluctuation range of the water flow in the internal water channel 1. The specific functions and processing of the control unit 104 are further described in step S220.

[0102] Specifically, if Figure 6As shown, the present invention proposes a device for determining whether a dishwasher is short of water and replenishing water when the dishwasher is short of water, further comprising: Step 424: If the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the inner water channel 1 leading to the upper spray arm of the dishwasher is consistently zero, the dishwasher is controlled to pause operation and replenish water in an amount of water Y. The amount of water Y is determined to ensure that the flow velocity fluctuation range of the water flow detected by the flow velocity sensor 2 on the inner water channel 1 leading to the upper spray arm of the dishwasher is not consistently zero when the flow velocity is retested after replenishment. After replenishing water in accordance with the amount of water Y, the process returns to Step 2, restarting the dishwasher's wash pump to re-measure the flow velocity fluctuation range of the water flow in the inner water channel 1 via the flow velocity sensor 2 on the inner water channel 1 leading to the upper spray arm of the dishwasher, and then re-executing Steps 3 and 4. The amount of water Y is determined based on the model and capacity of the dishwasher.

[0103] In some embodiments, the control device for the dishwasher according to the solution of the present invention further includes a process of monitoring the number of times water is replenished into the dishwasher, specifically as follows:

[0104] The control unit 104 is further configured to, upon determining that the dishwasher has water but lacks water, replenish water into the dishwasher based on the current flow velocity fluctuation range of the water flow in the internal water channel 1, and continue to control the dishwasher to perform normal washing operations after the water replenishment is completed. If it is again determined that the dishwasher has water but lacks water or that the dishwasher is out of water, then the dishwasher is determined to be in an abnormal state. The specific functions and processing of the control unit 104 are further described in step S310.

[0105] The control unit 104 is further configured to, upon determining that the dishwasher is out of water, refill water into the dishwasher based on the model and capacity of the dishwasher, and re-start and operate the wash pump after the water refill is complete, and then, if it is again determined that the dishwasher has water but is out of water or that the dishwasher is out of water, determine that the dishwasher is in an abnormal state. The specific functions and processing of the control unit 104 are further described in step S320.

[0106] The control unit 104 is further configured to, when determining that the dishwasher is in an abnormal state, control the dishwasher to stop and initiate a reminder message indicating that the dishwasher is in an abnormal state. The specific functions and processing of the control unit 104 are further described in step S330.

[0107] Specifically, the solution of the present invention is applied to a dishwasher in which all spray arms rotate together. For any of steps 421, 422, 423, and 424, if the dishwasher detects flow rate fluctuations in water channel 1 in the dishwasher again after performing a water replenishment operation, the control system of the dishwasher determines that the dishwasher is in an abnormal state, controls the dishwasher to stop operation, and reports a fault to the outside through the display module to remind the user to check whether there is a phenomenon of water storage when placing dishes, or to request after-sales repair.

[0108] The present invention employs a flow rate sensor 2 installed in the dishwasher's internal water channel 1. This sensor detects fluctuations in the flow rate within the dishwasher's internal water channel 1 to determine whether the dishwasher is experiencing a water shortage. Furthermore, by distinguishing the range of flow rate fluctuations, the amount of water shortage can be determined with relative accuracy. By precisely controlling the dishwasher's water supply, the exact amount of water shortage can be accurately detected when the dishwasher is experiencing a water shortage. The water inlet solenoid valve is then controlled to replenish water accordingly, thus avoiding water waste. Furthermore, this precise replenishment reduces the number of refills, thereby improving refill efficiency.

[0109] Since the processing and functions implemented by the device of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned method, for any details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0110] According to the technical solution of the present invention, a flow rate sensor 2 is installed on the inner water channel 1 leading to the upper spray arm of the dishwasher in which all spray arms rotate together, so as to measure the flow rate fluctuation range of the water flow in the inner water channel 1 using the flow rate sensor 2. When the dishwasher is fully filled with water and the washing pump is started and running, the flow rate fluctuation range of the water flow in the inner water channel 1 measured by the flow rate sensor 2 is obtained as the flow rate fluctuation range V. Based on the different flow rate intervals within the flow rate fluctuation range V, it is determined whether the dishwasher is short of water. If it is determined that the dishwasher is short of water, if the flow rate fluctuation range V is greater than the flow rate fluctuation range V0, a ​​dynamic water replenishment amount is determined based on the flow rate fluctuation range V. When the washing operation of the dishwasher is operating normally, the water inlet solenoid valve of the dishwasher is controlled to replenish water based on the dynamic water replenishment amount. If the flow rate fluctuation range V is equal to 0, a static water replenishment amount is determined based on the model and capacity of the dishwasher. After the dishwasher is controlled to be shut down, the water inlet solenoid valve of the dishwasher is controlled to replenish water based on the static water replenishment amount, thereby avoiding water waste and overflow risks.

[0111] According to an embodiment of the present invention, a dishwasher corresponding to the control device of the dishwasher is also provided. The dishwasher may include: the control device of the dishwasher described above.

[0112] Since the processing and functions implemented by the dishwasher of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned devices, for any details not fully described in this embodiment, reference can be made to the relevant descriptions in the aforementioned embodiments and no further elaboration will be given here.

[0113] According to the technical solution of the present invention, a flow rate sensor 2 is installed on an inner water channel 1 leading to an upper spray arm in a dishwasher in which all spray arms rotate together, so as to measure the flow velocity fluctuation range of the water flow in the inner water channel 1 using the flow rate sensor 2. When the dishwasher is fully filled with water and the washing pump is started and running, the flow velocity fluctuation range of the water flow in the inner water channel 1 measured by the flow rate sensor 2 is obtained as the flow velocity fluctuation range V. Based on the different flow velocity intervals within the flow velocity fluctuation range V, it is determined whether the dishwasher is short of water. If it is determined that the dishwasher is short of water, if the flow velocity fluctuation range V is greater than the flow velocity fluctuation range V0, a ​​dynamic water replenishment amount is determined based on the flow velocity fluctuation range V. When the washing operation of the dishwasher is operating normally, the water inlet solenoid valve of the dishwasher is controlled to replenish water based on the dynamic water replenishment amount. If the flow velocity fluctuation range V is equal to 0, a static water replenishment amount is determined based on the model and capacity of the dishwasher. After the dishwasher is controlled to be shut down, the water inlet solenoid valve of the dishwasher is controlled to replenish water based on the static water replenishment amount. This can reduce the number of water replenishments and improve the water replenishment efficiency.

[0114] According to an embodiment of the present invention, a storage medium corresponding to the dishwasher control method is also provided, wherein the storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the above-mentioned dishwasher control method.

[0115] Since the processing and functions implemented by the storage medium of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned method, for any details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0116] According to the technical solution of the present invention, a flow rate sensor 2 is installed on an inner water channel 1 leading to an upper spray arm in a dishwasher in which all spray arms rotate together. The flow rate sensor 2 is used to measure the flow rate fluctuation range of the water flow in the inner water channel 1. When the dishwasher is fully filled with water and the wash pump is started and running, the flow rate fluctuation range of the water flow in the inner water channel 1 measured by the flow rate sensor 2 is obtained as the flow rate fluctuation range V. Based on the different flow rate intervals within the flow rate fluctuation range V, it is determined whether the dishwasher is short of water. If it is determined that the dishwasher is short of water, if the flow rate fluctuation range V is greater than the flow rate fluctuation range V0, a ​​dynamic water replenishment amount is determined based on the flow rate fluctuation range V. When the dishwasher washes normally, the water inlet solenoid valve of the dishwasher is controlled to replenish water based on the dynamic water replenishment amount. If the flow rate fluctuation range V is equal to 0, a static water replenishment amount is determined based on the model and capacity of the dishwasher. After the dishwasher is controlled to be shut down, the water inlet solenoid valve of the dishwasher is controlled to replenish water based on the static water replenishment amount. This can relatively accurately determine the water shortage of the dishwasher, avoid waste, and improve water replenishment efficiency.

[0117] In summary, it is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0118] The foregoing description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims.

Claims

1. A method for controlling a dishwasher, characterized in that: The dishwasher comprises spray arms and a washing pump; the number of the spray arms is n, where n is a positive integer; the n spray arms include at least an upper spray arm; for a dishwasher in which all the spray arms rotate together, a flow rate sensor (2) is installed on an inner water channel (1) in the dishwasher for allowing water to flow to the upper spray arm; The control method of the dishwasher comprises: After the dishwasher is started, controlling water intake into the dishwasher; After the dishwasher has completed water intake, controlling the washing pump to start and run; During the operation of the washing pump, a flow velocity fluctuation range of the water flow in the inner water channel (1) detected by the flow velocity sensor (2) is obtained and recorded as the current flow velocity fluctuation range of the water flow in the inner water channel (1); Determining whether the dishwasher is short of water or whether there is no water in the dishwasher according to the current flow rate fluctuation range of the water flow in the inner water channel (1); If it is determined that there is water in the dishwasher and there is no water shortage, controlling the washing operation of the dishwasher to operate normally; If it is determined that there is water in the dishwasher but it is short of water, the washing operation of the dishwasher is controlled to operate normally, and when the washing operation of the dishwasher is operating normally, water is added to the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally; If it is determined that the dishwasher is out of water, the dishwasher is controlled to stop, and water is added to the dishwasher according to the model and capacity of the dishwasher. After the water addition is completed, the washing pump is controlled to start and run again; targeted water addition is performed according to the different flow rates of the water flow in the internal water channel of the dishwasher, so that the amount of water added can be accurately controlled.

2. The control method of the dishwasher according to claim 1, characterized in that: Determining whether the dishwasher is short of water or whether there is no water in the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1) comprises: If it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel (1) is equal to the standard flow velocity fluctuation range of the dishwasher, it is determined that the dishwasher has water and is not short of water; If it is determined that the current flow rate fluctuation range of the water flow in the inner water channel (1) is greater than the standard flow rate fluctuation range of the dishwasher, it is determined that the dishwasher has water but is short of water; If it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel (1) is equal to 0, it is determined that the dishwasher has no water.

3. The control method of the dishwasher according to claim 1, characterized in that: Controlling the normal operation of the washing operation of the dishwasher, and under the condition that the washing operation of the dishwasher is normal, replenishing water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and still controlling the normal operation of the washing operation of the dishwasher after the water replenishment is completed, comprising: If the dishwasher is in a state of heating water, the dishwasher is controlled to stop heating and the washing operation of the dishwasher is controlled to operate normally; and, when the washing operation of the dishwasher is operating normally, water is added to the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally, and after the water addition is completed, the dishwasher is controlled to heat again; If the dishwasher is not in the state of heating water, the washing operation of the dishwasher is controlled to operate normally; and, when the washing operation of the dishwasher is operating normally, water is added to the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally.

4. The control method of the dishwasher according to claim 1, characterized in that: The method controls the washing operation of the dishwasher to operate normally, and when the washing operation of the dishwasher is operating normally, replenishes water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and controls the washing operation of the dishwasher to operate normally after the water replenishment is completed, and further includes: If the current flow velocity fluctuation range of the water flow in the inner water channel (1) is less than or equal to the first set flow velocity fluctuation range, then under the condition that the washing operation of the dishwasher is normally performed, the first set amount of water is added to the dishwasher, and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally; If the current flow velocity fluctuation range of the water flow in the inner water channel (1) is greater than the first set flow velocity fluctuation range and less than the second set flow velocity fluctuation range, then under the condition that the washing operation of the dishwasher is normally performed, the second set water volume is added to the dishwasher, and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally; If the current flow velocity fluctuation range of the water flow in the inner water channel (1) is greater than or equal to the second set flow velocity fluctuation range, then when the washing operation of the dishwasher is operating normally, the third set water volume is added to the dishwasher, and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally.

5. The control method of the dishwasher according to claim 1, characterized in that: Controlling the dishwasher to stop, and replenishing water to the dishwasher according to the model and capacity of the dishwasher, and re-controlling the washing pump to start and run after the water replenishment is completed, including: After the dishwasher is stopped, based on a correspondence between a set model, a set capacity, and a set water replenishment amount, the set water replenishment amount corresponding to the set model and the set capacity that are the same as the model and capacity of the dishwasher in the correspondence is determined as the water replenishment amount that needs to be replenished to the dishwasher, and recorded as the current water replenishment amount of the dishwasher; The dishwasher is replenished with water according to the current water replenishment amount of the dishwasher, and the washing pump is controlled to start and run again after the water replenishment is completed.

6. The control method of a dishwasher according to any one of claims 1 to 5, characterized in that: Also includes: In the case where it is determined that there is water but lacks water in the dishwasher, water has been added to the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally. If it is determined again that there is water but lacks water in the dishwasher or that there is no water in the dishwasher, then it is determined that the dishwasher is in an abnormal state; In the case where it is determined that the dishwasher is out of water, water has been added to the dishwasher according to the model and capacity of the dishwasher, and the washing pump has been re-controlled to start and operate after the water addition is completed, if it is again determined that the dishwasher has water but is short of water or that the dishwasher is out of water, then the dishwasher is determined to be in an abnormal state; When it is determined that the dishwasher is in an abnormal state, the dishwasher is controlled to stop, and a reminder message indicating that the dishwasher is in an abnormal state is issued.

7. A control device for a dishwasher, characterized in that: The dishwasher comprises spray arms and a washing pump; the number of the spray arms is n, where n is a positive integer; the n spray arms include at least an upper spray arm; for a dishwasher in which all the spray arms rotate together, a flow rate sensor (2) is installed on an inner water channel (1) in the dishwasher for allowing water to flow to the upper spray arm; The control device of the dishwasher comprises: a control unit, configured to control water intake into the dishwasher after the dishwasher is started; The control unit is further configured to control the washing pump to start and operate after the dishwasher completes water intake; an acquisition unit configured to acquire, during the operation of the washing pump, a flow velocity fluctuation range of water in an inner water channel (1) in the dishwasher for allowing water to flow to the upper spray arm, detected by the flow velocity sensor (2), and record the range as a current flow velocity fluctuation range of the water in the inner water channel (1); The control unit is further configured to determine whether the dishwasher is short of water or whether there is no water in the dishwasher according to the current flow rate fluctuation range of the water flow in the inner water channel (1); The control unit is further configured to control the washing operation of the dishwasher to operate normally if it is determined that there is water in the dishwasher and there is no water shortage; The control unit is further configured to, if it is determined that there is water in the dishwasher but water is insufficient, control the dishwasher to operate normally for washing, and, if the dishwasher operates normally for washing, replenish water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and still control the dishwasher to operate normally for washing after the water replenishment is completed; The control unit is further configured to, if it is determined that the dishwasher is out of water, control the dishwasher to stop, and replenish water to the dishwasher according to the model and capacity of the dishwasher, and re-control the washing pump to start and run after the water replenishment is completed; targeted water replenishment is performed according to the different flow rates of the water flow in the internal water channel of the dishwasher, so as to achieve precise control of the water replenishment amount.

8. The control device of the dishwasher according to claim 7, characterized in that: The control unit determines whether the dishwasher is short of water or whether there is no water in the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), including: If it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel (1) is equal to the standard flow velocity fluctuation range of the dishwasher, it is determined that the dishwasher has water and is not short of water; If it is determined that the current flow rate fluctuation range of the water flow in the inner water channel (1) is greater than the standard flow rate fluctuation range of the dishwasher, it is determined that the dishwasher has water but is short of water; If it is determined that the current flow velocity fluctuation range of the water flow in the inner water channel (1) is equal to 0, it is determined that the dishwasher has no water.

9. The control device of the dishwasher according to claim 7, characterized in that: The control unit controls the normal operation of the washing operation of the dishwasher, and when the washing operation of the dishwasher is normal, replenishes water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and controls the normal operation of the washing operation of the dishwasher after the water replenishment is completed, including: If the dishwasher is in a state of heating water, the dishwasher is controlled to stop heating and the washing operation of the dishwasher is controlled to operate normally; and, when the washing operation of the dishwasher is operating normally, water is added to the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally, and after the water addition is completed, the dishwasher is controlled to heat again; If the dishwasher is not in the state of heating water, the washing operation of the dishwasher is controlled to operate normally; and, when the washing operation of the dishwasher is operating normally, water is added to the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally.

10. The control device of the dishwasher according to claim 7, characterized in that: The control unit controls the normal operation of the washing operation of the dishwasher, and when the washing operation of the dishwasher is normal, replenishes water into the dishwasher according to the current flow velocity fluctuation range of the water flow in the inner water channel (1), and controls the normal operation of the washing operation of the dishwasher after the water replenishment is completed, and further includes: If the current flow velocity fluctuation range of the water flow in the inner water channel (1) is less than or equal to the first set flow velocity fluctuation range, then under the condition that the washing operation of the dishwasher is normally performed, the first set amount of water is added to the dishwasher, and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally; If the current flow velocity fluctuation range of the water flow in the inner water channel (1) is greater than the first set flow velocity fluctuation range and less than the second set flow velocity fluctuation range, then under the condition that the washing operation of the dishwasher is normally performed, the second set water volume is added to the dishwasher, and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally; If the current flow velocity fluctuation range of the water flow in the inner water channel (1) is greater than or equal to the second set flow velocity fluctuation range, then when the washing operation of the dishwasher is operating normally, the third set water volume is added to the dishwasher, and after the water addition is completed, the washing operation of the dishwasher is still controlled to operate normally.

11. The control device of the dishwasher according to claim 7, characterized in that: The control unit controls the dishwasher to stop, replenishes water to the dishwasher according to the model and capacity of the dishwasher, and controls the washing pump to start and operate again after the water replenishment is completed, including: After the dishwasher is stopped, based on a correspondence between a set model, a set capacity, and a set water replenishment amount, the set water replenishment amount corresponding to the set model and the set capacity that are the same as the model and capacity of the dishwasher in the correspondence is determined as the water replenishment amount that needs to be replenished to the dishwasher, and recorded as the current water replenishment amount of the dishwasher; The dishwasher is replenished with water according to the current water replenishment amount of the dishwasher, and the washing pump is controlled to start and run again after the water replenishment is completed.

12. The control device of the dishwasher according to any one of claims 7 to 11, characterized in that: Also includes: The control unit is further configured to, when it is determined that there is water but lacks water in the dishwasher, replenish water into the dishwasher according to the current flow rate fluctuation range of the water flow in the inner water channel (1), and after the water replenishment is completed, still control the washing operation of the dishwasher to operate normally, if it is determined again that there is water but lacks water in the dishwasher or that there is no water in the dishwasher, then determine that the dishwasher is in an abnormal state; The control unit is further configured to, after determining that the dishwasher is out of water, replenish water into the dishwasher according to the model and capacity of the dishwasher, and re-control the washing pump to start and operate after the water replenishment is completed, determine that the dishwasher is in an abnormal state if it is again determined that the dishwasher has water but is short of water or that the dishwasher is out of water; The control unit is further configured to, when determining that the dishwasher is in an abnormal state, control the dishwasher to stop and initiate a reminder message that the dishwasher is in an abnormal state.

13. A dishwasher, characterized in that: include: The control device of the dishwasher according to any one of claims 7 to 12.

14. A storage medium, characterized in that The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the control method for the dishwasher according to any one of claims 1 to 6.

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