Dish washing machine and heating washing control method thereof

Abstract

The invention relates to a dish-washing machine and a heating washing control method thereof, and the dish-washing machine comprises a dish-washing machine main body which is provided with a washing cavity; the spraying arm assembly is configured to spray washing water to the washing cavity; the water supply mechanism comprises a heating pump, the heating pump is used for supplying washing water to the spraying arm assembly and / or the washing cavity, and the heating pump is used for heating the washing water; the heating pump is communicated with the washing cavity through a fluid channel of the heating device, and the heating device is used for heating washing water flowing through the fluid channel; and the control device is electrically connected with the heating pump and the heating device. According to the dish-washing machine disclosed by the invention, the heating pump can heat washing water while pumping water so as to improve the decontamination capability; meanwhile, the independent heating device is arranged on the water path for communicating the heating pump and the washing cavity, and the washing water can be further heated to reach the high-temperature disinfection standard when flowing through the fluid channel, so that the problem of bubbles generated when the heating water temperature of the heating pump is too high is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers, and in particular to a dishwasher and a heating and washing control method thereof. Background Art

[0002] Currently, the cleaning and heating methods of traditional dishwashers generally fall into two categories: the first is to integrate a heating device on the washing pump, which heats the water while pumping water when the washing pump is working; the second is to set a heating plate at the bottom of the inner tank to directly heat the water at the bottom of the inner tank. Compared with the second method, the first method can simplify the structure of the bottom of the inner tank and avoid potential safety hazards caused by users directly contacting the exposed heating plate. Therefore, currently, the first method has become the mainstream cleaning and heating method for dishwashers.

[0003] The water temperature for high-temperature washing of dishwashers on the market generally ranges from 70 to 75 °C. With the increasing demand for the disinfection function of dishwashers in the domestic market, high-temperature disinfection, as the most directly perceived and acceptable disinfection method for users, has raised the water temperature requirement for dishwashers. The domestic disinfection standard requires that the water temperature reach 80 °C for more than half an hour to meet the five-star disinfection standard. However, currently, when the heating of the washing pump reaches a water temperature above 80 °C, heating bubbles are likely to be generated in the impeller cavity, causing the washing pump to malfunction and affecting the washing function of the dishwasher; while the second method of using a heating plate poses a greater risk of scalding users at high temperatures above 80 °C, which may cause safety accidents. Summary of the Invention

[0004] Based on this, in view of the problem that when the heating of the current washing pump reaches too high a water temperature, heating bubbles are easily generated in the impeller cavity, causing the washing pump to malfunction and affecting the washing function of the dishwasher, it is necessary to provide a dishwasher and a heating and washing control method thereof.

[0005] A dishwasher includes: a dishwasher main body provided with a washing cavity; a spray arm assembly disposed on the dishwasher main body and configured to spray washing water into the washing cavity; a water supply mechanism disposed on the dishwasher main body, the water supply mechanism including a heating pump for supplying washing water to the spray arm assembly and / or the washing cavity, the heating pump being used to heat the washing water; a heating device provided with a fluid passage, the heating pump being connected to the washing cavity through the fluid passage, the heating device being used to heat the washing water flowing through the fluid passage; and a control device disposed on the dishwasher main body, the control device being electrically connected to the heating pump and the heating device respectively.

[0006] The present application discloses a dishwasher. The water supply mechanism is provided with a heating pump which is respectively connected to the spray arm assembly and the washing chamber, and can heat the washing water while pumping water, so as to improve the decontamination ability of the washing water. At the same time, by arranging an independent heating device on the water path connecting the heating pump and the washing chamber, the washing water can be further heated when flowing through the fluid channel of the heating device, so that the washing water temperature can better meet the high-temperature disinfection standard, realizing the high-temperature disinfection function of the dishwasher, and thus solving the problem of bubbles generated when the heating pump heats the water temperature too high, and avoiding the potential safety hazard of scalding caused by setting an exposed heating plate at the bottom of the inner liner.

[0007] In one embodiment, the water supply mechanism further includes a water cup, the water cup is arranged on the dishwasher main body, the heating pump is respectively connected to the water cup, the spray arm assembly and the washing chamber, and the heating pump is used to transport the washing water in the water cup to the spray arm assembly and / or the washing chamber. By arranging a water cup on the dishwasher main body for storing washing water, the pump inlet of the heating pump can be directly connected to the water cup to pump the washing water in the water cup to the spray arm assembly, etc. The setting of the water cup can also facilitate the user to perform operations such as water production, purification filtration and detergent dosing, so as to cope with the temporary water cut-off situation.

[0008] In one embodiment, the water cup is located at the bottom of the dishwasher main body, and the water cup is connected to the washing chamber. By adopting the above structure, the washing water entering the washing chamber will fall to the bottom of the washing chamber under the action of gravity after cleaning the tableware and then further flow back into the water cup, thereby forming a water circulation system. Without using a large amount of water sources, the tableware can be thoroughly cleaned, while saving detergent and energy, and the operation is convenient, which is beneficial to improving the washing efficiency of the dishwasher.

[0009] In one embodiment, the water supply mechanism further includes a water inlet assembly, the water inlet assembly is connected to an external water source, the water inlet assembly is used to transport washing water to the water cup or the washing chamber, and the water inlet assembly is electrically connected to the control device. By arranging the water inlet assembly, when the user starts the washing program, the control device can control the water inlet assembly to be connected to the external water source and input washing water to the water cup or the washing chamber, thereby simplifying the manual operation, making the dishwashing work more convenient, and at the same time realizing the quantitative control of the washing water, so as to facilitate the confirmation of the detergent dosing parameter, which is beneficial to improving the cleaning efficiency.

[0010] In one embodiment, the water supply mechanism further includes a water delivery pipe. One end of the water delivery pipe is communicated with the pump outlet of the heating pump, and the other end of the water delivery pipe is communicated with the spray arm assembly. A branch pipe is provided on the water delivery pipe, and the branch pipe is communicated with the washing cavity. The heating device is arranged on the branch pipe. The heating pump and the spray arm assembly are communicated through the water delivery pipe. By providing a branch pipe on the water delivery pipe, it is used to split the washing water, so that the washing water can flow through the fluid channel and be heated by the heating device to further increase the temperature to meet the high-temperature disinfection standard. At the same time, through the setting of the water delivery pipe, it is more convenient for installers to reasonably arrange components such as the water supply mechanism and the heating device, so as to improve the space utilization rate of the dishwasher.

[0011] In one embodiment, the water supply mechanism further includes a control valve. The control valve is arranged on the water delivery pipe, and the control valve is used to distribute the flow rate of the washing water entering the spray arm assembly and the washing cavity respectively. Through the setting of the control valve, it is convenient for the dishwasher to control the outflow direction and heating temperature of the washing water according to the washing mode. Specifically, the dishwasher includes at least two washing modes: "normal washing" and "high-temperature washing". When the "normal washing" mode is selected, the control valve guides the washing water output by the heating pump to the spray arm assembly for spraying and cleaning the tableware in the washing cavity. When the "high-temperature washing" mode is selected, the control valve can guide the washing water output by the heating pump to the washing cavity, and the washing water will flow through the fluid channel and be further heated by the heating device to reach the high-temperature disinfection standard, so as to realize the disinfection and sterilization function of the dishwasher for tableware. By adopting the above structure, it is convenient to switch the washing mode of the dishwasher, which is beneficial to improving the washing efficiency of the dishwasher and saving energy.

[0012] In one embodiment, the water supply mechanism further includes a check valve. The check valve is located at one end of the branch pipe close to the heating pump, and the check valve is used to prevent the washing liquid entering the fluid channel from flowing back into the heating pump. Through the setting of the check valve, it can prevent the washing water heated at high temperature by the heating device from flowing back into the heating pump through the water delivery pipe, thereby avoiding the situation that heating bubbles are easily generated when the water temperature in the impeller cavity of the heating pump is too high, resulting in the heating pump being unable to work normally, and ensuring that the heating pump can pump water stably;

[0013] In one embodiment, the heating device includes a housing and a first heating component. The housing is provided with the fluid channel. The first heating component is disposed on the housing component and is electrically connected to the control device. The first heating component is configured to heat the washing water in the fluid channel. A heating component is provided on the housing. The input end of the fluid channel of the housing is communicated with the pump outlet of the heating pump. After the washing water transported by the heating pump into the fluid channel is heated by the heating component, the washing water will flow out through the output end of the fluid channel and be transported to the washing chamber. Thus, an independent heating device can be formed on the water path of the dishwasher washing system, so that the washing water temperature in the high-temperature washing process can better meet the high-temperature disinfection standard and will not affect the heating pump.

[0014] In one embodiment, the housing includes a housing body, a first connecting column, and a second connecting column. The first connecting column and the second connecting column are respectively disposed at two ends of the housing body. The housing body is provided with a liquid passing cavity. The first connecting column is provided with a liquid inlet, and the second connecting column is provided with a liquid outlet. The liquid inlet, the liquid passing cavity, and the liquid outlet are sequentially communicated to form the fluid channel. The first heating component is disposed on the housing body.

[0015] In one embodiment, the heating device further includes a fixing component. The fixing component is disposed on the housing and is used for adaptively installing with the outer wall of the dishwasher main body. By using the fixing component to fix the heating device on the dishwasher main body, the heating device can be set more stably, ensuring that the connections between the heating device, the inner liner, and the heating pump are not easily loosened.

[0016] In one embodiment, the fixing component includes a mounting housing. The mounting housing is provided with a mounting cavity. The housing is disposed on the mounting housing. At least part of the first heating component and at least part of the housing are located in the mounting cavity. The mounting wall of the mounting housing is provided with positioning holes for adaptively installing with the positioning pins on the dishwasher main body. Through the setting of the mounting housing, on the one hand, it is convenient to fix the heating device on the dishwasher main body through the mounting housing. On the other hand, the mounting housing is provided with a mounting cavity for installing the first heating component and the housing, so as to form a protective isolation for the first heating component and the housing. While protecting the first heating component and the housing, it can also reduce the heat dissipation loss caused by the first heating component. When the mounting wall of the mounting housing is provided with positioning holes and the heating device is installed on the dishwasher main body, the positioning holes on the mounting wall of the mounting housing can be aligned with the positioning pins on the dishwasher main body for connection, thereby forming a positioning effect on the heating device, which is beneficial to the rapid installation of the heating device.

[0017] In one embodiment, the fixing component further includes a positioning plate. A part of the positioning plate is located in the installation cavity. The positioning plate is disposed opposite to the installation wall of the installation housing. One end of the positioning plate is provided on the end wall of the housing, and the other end of the positioning plate extends out of the installation cavity. The positioning plate is provided with a first connection hole, and the first connection hole is used to cooperate with a second connection hole on the dishwasher main body through a pin shaft to connect the positioning plate and the dishwasher main body. Connecting the first connection hole on the positioning plate and the second connection hole on the dishwasher main body by using a pin shaft can enable the positioning plate to cooperate with the installation housing to complete the rapid positioning and installation of the heating device, and ensure that the heating device is firmly installed and not prone to loosening and deviation.

[0018] In one embodiment, an installation block is formed on the outer wall of the dishwasher main body, and the installation block is used for fitting and installing with the fixing component. By providing the installation block, the installation block can cooperate with the fixing component to position and install the heating device, effectively improving the installation speed.

[0019] In one embodiment, the positioning pin is formed on the installation block.

[0020] In one embodiment, the second connection hole is provided on the installation block.

[0021] In one embodiment, the heating device further includes a thermostat. The thermostat component is disposed on the housing and / or the fixing component. The thermostat is electrically connected to the first heating component, and the thermostat is used to control the working temperature of the first heating component. By providing the thermostat, it is convenient to perform constant temperature control on the heating temperature of the first heating component. When needed, the working temperature can be adjusted to quickly increase the water temperature of the washing water in the fluid channel, improving the heating efficiency.

[0022] In one embodiment, the heating device further includes a temperature sensor. The temperature sensor is disposed on the housing, and the temperature sensor is used to detect the liquid temperature in the fluid channel. The temperature sensor is electrically connected to the thermostat, and the thermostat is used to receive the temperature signal of the temperature sensor and control the operation of the first heating component according to the received temperature signal. By providing the temperature sensor, the liquid temperature value in the fluid channel can be obtained in real time. Thus, with the cooperation of the temperature sensor and the thermostat, the water temperature in the fluid channel is ensured to be within the standard temperature value range. On the one hand, it effectively avoids the situation that the water temperature is lower than the temperature standard, resulting in insufficient time for the water temperature to reach the standard and affecting the disinfection effect; on the other hand, when the water temperature reaches a suitable value, it can be better controlled in a constant temperature state, avoiding the situation of excessive water temperature and energy waste, thereby improving the heating efficiency of the heating device.

[0023] In one embodiment, the heating device further includes a fuse, which is disposed on the housing and / or the fixing component. The fuse is used to cut off the connection between the first heating component and the power supply to achieve overcurrent protection of the circuit. The fuse serves as an overcurrent protection device and is used to disconnect the power supply of the entire device when the current of the first heating component is too large, playing a role in preventing damage to electronic devices.

[0024] In one embodiment, the heating pump includes a motor, a pump housing, an impeller, and a second heating component. The motor and the second heating component are respectively disposed on the pump housing. The pump housing has a pump chamber, a pump inlet, and a pump outlet that communicate with the pump chamber. The impeller is installed in the pump chamber and is electrically connected to the motor. By adopting the above structure, when the motor drives the impeller to rotate, a driving force can be generated to drive the washing water to flow from the pump inlet to the pump outlet. At the same time, the second heating component is disposed on the pump housing to heat the water flow, and the decontamination ability of the washing water can be improved by raising the temperature.

[0025] The second aspect of the present application provides a heating and washing control method for a dishwasher. The dishwasher includes a dishwasher main body, a spray arm assembly, a water supply mechanism, a heating device, and a control device disposed on the dishwasher main body. The spray arm assembly is configured to spray washing water into the washing cavity of the dishwasher main body. The water supply mechanism includes a heating pump, which is used to heat the washing water and supply the washing water to the spray arm assembly and / or the washing cavity. The heating device is provided with a fluid channel, and the heating pump communicates with the washing cavity through the fluid channel. The heating device is used to heat the washing water flowing through the fluid channel. The control device is electrically connected to the water supply mechanism and the heating device respectively. The heating and washing control method includes the following steps: S1: The control device receives user input and the washing program is started; S3: According to the user input, the dishwasher is controlled to enter the corresponding washing mode. The washing mode at least includes a normal washing mode and a high-temperature washing mode. The water supply mechanism and the heating device are started respectively according to the washing mode, and the flow rate of the washing water entering the spray arm assembly and the washing cavity is allocated. The heating and washing control method for the dishwasher disclosed in the second aspect of the present application has at least two washing modes, namely "normal washing" and "high-temperature washing". By switching different washing modes, the outflow direction and heating temperature of the washing water can be controlled. Specifically, in the high-temperature washing mode, the heating device can perform secondary heating on the washing water outside the heating pump, so that the water temperature of the washing water can reach the high-temperature disinfection standard efficiently, while avoiding the bubble problem generated when the water temperature of the heating pump is too high, and ensuring the effective implementation of the washing and high-temperature disinfection functions of the dishwasher.

[0026] In one embodiment, in the normal washing mode, the heating pump is started. After pumping in the washing water and performing preliminary heating, the washing water is driven to flow towards the spray arm assembly at a preset flow rate L1. The spray arm assembly is started to spray the washing water into the washing cavity to wash the tableware; in the high-temperature washing mode, the heating pump is started. After pumping in the washing water and performing preliminary heating, the washing water is driven to flow towards the washing cavity at a preset flow rate L2. When the washing water flows towards the washing cavity, the heating device performs secondary heating on the washing water flowing through the fluid channel to the disinfection standard temperature to perform high-temperature disinfection on the tableware. When the "normal washing" mode is selected, the washing water output by the heating pump will flow towards the spray arm assembly at a preset flow rate L1 for it to spray and clean the tableware in the washing cavity. At the same time, the temperature of the washing water rises after preliminary heating by the heating pump, enhancing the decontamination ability of the washing water; when the "high-temperature washing" mode is selected, the washing water output by the heating pump will flow towards the washing cavity at a preset flow rate L2. When the washing water flows towards the washing cavity, its temperature rises to the disinfection standard under the secondary heating of the heating device, so as to realize the disinfection and sterilization function of the dishwasher for the tableware.

[0027] In one embodiment, the water supply mechanism further includes a water cup. The water cup is communicated with the pump inlet of the heating pump. The water cup is located at the bottom of the dishwasher main body. The water cup is communicated with the washing cavity. The specific process of step S3 is as follows: S31: Select the washing mode according to the application scenario requirements. Start the water supply mechanism and the heating device respectively according to the requirements of the washing mode, and allocate the flow rate of the washing water entering the spray arm assembly and the washing cavity; S32: The washing water in the washing cavity washes the tableware and then flows back into the water cup for the heating pump to pump out and transport to the spray arm assembly and / or the washing cavity for recycling until the washing work is completed. By providing a water cup on the dishwasher main body to store the washing water, the pump inlet of the heating pump can be directly connected to the water cup to pump the washing water in the water cup to the spray arm assembly, etc. The washing water entering the washing cavity washes the tableware and then falls to the bottom of the washing cavity under the action of gravity and further flows back into the water cup. Thus, a water circulation system can be formed. Without using a large amount of water sources, the tableware can be thoroughly cleaned, while also saving detergent and energy, and the operation is convenient, which is conducive to improving the washing efficiency of the dishwasher.

[0028] In one embodiment, the water supply mechanism further includes a water inlet assembly. The water inlet assembly is in communication with an external water source and is configured to deliver washing water to the water cup or the washing chamber. Before step S3, the heating and washing control method further includes: S2: When the water volume in the water cup is less than a preset volume, the water inlet assembly is connected to the external water source to deliver the required washing water to the water cup or the washing chamber. When the washing water in the water cup is insufficient, the control device can control the water inlet assembly to be connected to the external water source and input washing water into the water cup or the washing chamber. This can simplify manual operation, make the dishwashing work more convenient, and at the same time achieve quantitative control of the washing water, so as to facilitate confirming the dosing parameter of the detergent and is conducive to improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 FIG. 6 is a first perspective view of a dishwasher according to an embodiment;

[0030] Figure 2 FIG. 7 is a second perspective view of a dishwasher according to an embodiment;

[0031] Figure 3 FIG. 8 is an exploded view of a dishwasher according to an embodiment;

[0032] Figure 4 FIG. 9 is a perspective view of a heating device according to an embodiment;

[0033] Figure 5 is Figure 3 an enlarged view of region A of

[0034] Figure 6 FIG. 10 is a perspective view of a heating device according to an embodiment;

[0035] Figure 7 FIG. 11 is a first schematic flow chart of the heating and washing control method of the dishwasher;

[0036] Figure 8 FIG. 12 is a specific schematic flow chart of S3;

[0037] Figure 9 FIG. 13 is a second schematic flow chart of the heating and washing control method of the dishwasher.

[0038] Among them, the correspondence between the reference numerals and the component names is as follows:

[0039] 1 dishwasher main body, 101 washing chamber, 102 second connection hole, 11 mounting block, 111 positioning pin;

[0040] 2 water supply mechanism, 201 pump inlet, 202 pump outlet, 21 heating pump, 211 pump housing, 212 second heating component, 22 water cup, 23 water delivery pipeline, 231 branch pipeline;

[0041] 3 Heating device, 301 Liquid outlet, 302 Liquid inlet, 303 Installation cavity, 304 Positioning hole, 305 First connection hole, 31 Housing, 32 First heating component, 33 Fixing component, 331 Installation shell, 332 Positioning plate, 34 Thermostat, 35 Fuse. Detailed implementation manners

[0042] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0043] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0044] The following describes some embodiments of the dishwasher of the present invention with reference to the drawings.

[0045] As Figures 1 to 6 shown, this embodiment discloses a dishwasher, including: a dishwasher main body 1, the dishwasher main body 1 is provided with a washing cavity 101; a spray arm assembly, the spray arm assembly is arranged on the dishwasher main body 1, and the spray arm assembly is configured to spray washing water into the washing cavity 101; a water supply mechanism 2, the water supply mechanism 2 is arranged on the dishwasher main body 1, the water supply mechanism 2 includes a heating pump 21, the heating pump 21 is used to supply washing water to the spray arm assembly and / or the washing cavity 101, and the heating pump 21 is used to heat the washing water; a heating device 3, the heating device 3 is provided with a fluid channel, the heating pump 21 is communicated with the washing cavity 101 through the fluid channel, and the heating device 3 is used to heat the washing water flowing through the fluid channel; a control device, the control device is arranged on the dishwasher main body 1, and the control device is electrically connected to the heating pump 21 and the heating device 3 respectively.

[0046] The present application discloses a dishwasher. The water supply mechanism 2 is provided with a heating pump 21 which is respectively communicated with the spray arm assembly and the washing cavity 101, and can heat the washing water while pumping water to improve the decontamination ability of the washing water; at the same time, by arranging an independent heating device 3 on the water path where the heating pump 21 is communicated with the washing cavity 101, the washing water can be further heated when flowing through the fluid channel of the heating device 3, so that the washing water temperature can better meet the high-temperature disinfection standard, realizing the high-temperature disinfection function of the dishwasher, and thus solving the problem of bubbles generated when the heating water temperature of the heating pump 21 is too high, and avoiding the potential accident hazard of scalding caused by arranging an exposed heating plate at the bottom of the inner liner.

[0047] As Figure 2As shown, in addition to the features of the above embodiments, this embodiment further defines that: the water supply mechanism 2 further includes a water cup 22, the water cup 22 is arranged on the dishwasher main body 1, the heating pump 21 is respectively communicated with the water cup 22, the spray arm assembly and the washing cavity 101, and the heating pump 21 is used to convey the washing water in the water cup 22 to the spray arm assembly and / or the washing cavity 101. By arranging the water cup 22 on the dishwasher main body 1 for storing washing water, the pump inlet 201 of the heating pump 21 can be directly connected to the water cup 22 to pump the washing water in the water cup 22 to the spray arm assembly, etc. The setting of the water cup 22 can also facilitate the user to perform operations such as water production, purification and filtration, and detergent dispensing, so as to cope with the temporary water cut-off situation.

[0048] As Figure 2 shown, in addition to the features of the above embodiments, this embodiment further defines that: the water cup 22 is located at the bottom of the dishwasher main body 1, and the water cup 22 is communicated with the washing cavity 101. By adopting the above structure, the washing water entering the washing cavity 101 will fall to the bottom of the washing cavity 101 under the action of gravity after cleaning the tableware and further flow back into the water cup 22, thereby forming a water circulation system. Without using a large amount of water sources, the tableware can be thoroughly cleaned, while saving detergent and energy, and the operation is convenient, which is beneficial to improving the washing efficiency of the dishwasher.

[0049] In addition to the features of the above embodiments, this embodiment further defines that: the water supply mechanism 2 further includes a water inlet assembly, the water inlet assembly is communicated with an external water source, the water inlet assembly is used to convey washing water to the water cup 22 or the washing cavity 101, and the water inlet assembly is electrically connected to the control device. By arranging the water inlet assembly, when the user starts the washing program, the control device can control the water inlet assembly to be communicated with the external water source and input washing water to the water cup 22 or the washing cavity 101, thereby simplifying the manual operation, making the dishwashing work more convenient, and at the same time realizing the quantitative control of the washing water, so as to facilitate the confirmation of the detergent dosing parameter, which is beneficial to improving the cleaning efficiency.

[0050] As Figure 2 shown, in addition to the features of the above embodiments, this embodiment further defines that: the water supply mechanism 2 further includes a water conveying pipeline 23, one end of the water conveying pipeline 23 is communicated with the pump outlet 202 of the heating pump 21, the other end of the water conveying pipeline 23 is communicated with the spray arm assembly, a branch pipeline 231 is arranged on the water conveying pipeline 23, the branch pipeline 231 is communicated with the washing cavity 101, and the heating device 3 is arranged on the branch pipeline. The heating pump 21 and the spray arm assembly are communicated through the water conveying pipeline 23. By arranging the branch pipeline 231 on the water conveying pipeline 23 for splitting the washing water, the washing water can flow through the fluid channel and be heated by the heating device 3 so that the temperature further rises to meet the high-temperature disinfection standard. At the same time, by arranging the water conveying pipeline 23, it is more convenient for the installer to reasonably arrange components such as the water supply mechanism 2 and the heating device 3, so as to improve the space utilization rate of the dishwasher.

[0051] In addition to the features of the above embodiments, this embodiment further defines that the water supply mechanism 2 further includes a control valve, which is arranged on the water delivery pipeline 23 and is used to distribute the washing water flow rates respectively entering the spray arm assembly and the washing chamber 101. Through the setting of the control valve, it is convenient for the dishwasher to control the outflow direction and heating temperature of the washing water according to the washing mode. Specifically, the dishwasher includes at least two washing modes, namely "ordinary washing" and "high-temperature washing". When the "ordinary washing" mode is selected, the control valve guides the washing water output by the heating pump 21 to the spray arm assembly for spraying and cleaning the tableware in the washing chamber 101. When the "high-temperature washing" mode is selected, the control valve can guide the washing water output by the heating pump 21 to the washing chamber 101, and the washing water will flow through the fluid channel and be further heated by the heating device 3 to meet the high-temperature disinfection standard, so as to realize the disinfection and sterilization function of the dishwasher for tableware. By adopting the above structure, it is convenient to switch the washing mode of the dishwasher, which is beneficial to improving the washing efficiency of the dishwasher and saving energy.

[0052] In addition to the features of the above embodiments, this embodiment further defines that the water supply mechanism 2 further includes a check valve, which is located at one end of the branch pipeline close to the heating pump 21 and is used to prevent the washing liquid entering the fluid channel from flowing back into the heating pump 21. Through the setting of the check valve, it is possible to prevent the washing water heated at a high temperature by the heating device 3 from flowing back into the heating pump 21 through the water delivery pipeline 23, thereby avoiding the situation that heating bubbles are easily generated when the water temperature in the impeller cavity of the heating pump 21 is too high, resulting in the heating pump 21 being unable to work normally, and ensuring that the heating pump 21 can pump water stably;

[0053] As Figure 1 and Figure 4 shown, in addition to the features of the above embodiments, this embodiment further defines that the heating device 3 includes a housing 31 and a first heating assembly 32. The housing 31 is provided with a fluid channel, and the first heating assembly 32 is arranged on the housing 31 assembly. The first heating assembly 32 is electrically connected to the control device and is used to heat the washing water in the fluid channel. The housing 31 is provided with a heating assembly. The input end of the fluid channel of the housing 31 is communicated with the pump outlet 202 of the heating pump 21. After the washing water pumped by the heating pump 21 into the fluid channel is heated by the heating assembly, the washing water will flow out from the output end of the fluid channel and be transported to the washing chamber 101. Thus, an independent heating device 3 can be formed on the water path of the dishwasher washing system, so that the washing water temperature in the high-temperature washing link can better meet the high-temperature disinfection standard and does not affect the heating pump 21.

[0054] As Figure 4As shown, in addition to the features of the above embodiments, this embodiment further defines that: the housing 31 includes a housing body, a first connecting column and a second connecting column. The first connecting column and the second connecting column are respectively arranged at both ends of the housing body. The housing body is provided with a liquid passing cavity. The first connecting column is provided with a liquid inlet 302, and the second connecting column is provided with a liquid outlet 301. The liquid inlet 302, the liquid passing cavity and the liquid outlet 301 are sequentially communicated to form a fluid channel. The first heating assembly 32 is arranged on the housing body.

[0055] As Figure 1 , Figure 3 and Figure 4 shown, in addition to the features of the above embodiments, this embodiment further defines that: the heating device 3 further includes a fixing assembly 33. The fixing assembly 33 is arranged on the housing 31 and is used for fitting and installing with the outer wall of the dishwasher main body 1. By using the fixing assembly 33 to fix the heating device 3 on the dishwasher main body 1, the heating device 3 can be set more stably, ensuring that the connection between the heating device 3 and the inner liner and the heating pump 21 is not easily loosened.

[0056] As Figures 3 to 5 shown, in addition to the features of the above embodiments, this embodiment further defines that: the fixing assembly 33 includes an installation housing 331. The installation housing 331 is provided with an installation cavity 303. The housing 31 is arranged on the installation housing 331. At least part of the first heating assembly 32 and at least part of the housing 31 are located in the installation cavity 303. The installation wall of the installation housing 331 is provided with a positioning hole 304, and the positioning hole 304 is used for fitting and installing with the positioning pin 111 on the dishwasher main body 1. Through the setting of the installation housing 331, on the one hand, it is convenient to fix the heating device 3 on the dishwasher main body 1 through the installation housing 331. On the other hand, the installation housing 331 is provided with an installation cavity 303 for installing the first heating assembly 32 and the housing 31, so as to form a protective isolation for the first heating assembly 32 and the housing 31. While protecting the first heating assembly 32 and the housing 31, it can also reduce the heat dissipation loss caused by the first heating assembly 32. The positioning hole 304 is arranged on the installation wall of the installation housing 331. When the heating device 3 is installed on the dishwasher main body 1, the positioning hole 304 on the installation wall of the installation housing 331 can be aligned and connected with the positioning pin 111 on the dishwasher main body 1, so as to form a positioning effect on the heating device 3, which is beneficial to the rapid installation of the heating device 3.

[0057] As Figures 3 to 5As shown, in addition to the features of the above embodiments, this embodiment further defines that: the fixing component 33 further includes a positioning plate 332. Part of the positioning plate 332 is located in the installation cavity 303. The positioning plate 332 is disposed opposite to the installation wall of the installation housing 331. One end of the positioning plate 332 is disposed on the end wall of the housing 31, and the other end of the positioning plate 332 extends out of the installation cavity 303. The positioning plate 332 is provided with a first connection hole 305, and the first connection hole 305 is used to connect the positioning plate 332 and the dishwasher main body 1 in cooperation with a pin through the second connection hole 102 on the dishwasher main body 1. By using a pin to connect the first connection hole 305 on the positioning plate 332 and the second connection hole 102 of the dishwasher main body 1, the positioning plate 332 can cooperate with the installation housing 331 to complete the quick positioning and installation of the heating device 3, and ensure that the heating device 3 is firmly installed and not prone to loosening and deviation.

[0058] As Figure 3 and Figure 5 shown, in addition to the features of the above embodiments, this embodiment further defines that: an installation block 11 is formed on the outer wall of the dishwasher main body 1, and the installation block 11 is used for fitting and installing with the fixing component 33. By providing the installation block 11, the installation block 11 can cooperate with the fixing component 33 to position and install the heating device 3, effectively improving the installation speed.

[0059] As Figure 5 shown, in addition to the features of the above embodiments, this embodiment further defines that: the installation block 11 is formed with a positioning pin 111.

[0060] As Figure 5 shown, in addition to the features of the above embodiments, this embodiment further defines that: the installation block 11 is provided with a second connection hole 102.

[0061] As Figure 4 shown, in addition to the features of the above embodiments, this embodiment further defines that: the heating device 3 further includes a thermostat 34. The temperature control component is disposed on the housing 31 and / or the fixing component 33. The thermostat 34 is electrically connected to the first heating component 32, and the thermostat 34 is used to control the working temperature of the first heating component 32. By providing the thermostat 34, it is convenient to perform constant temperature control on the heating temperature of the first heating component 32, and the working temperature can be adjusted when needed to quickly increase the water temperature of the washing water in the fluid passage, improving the heating efficiency.

[0062] In addition to the features of the above embodiments, this embodiment further defines that the heating device 3 further includes a temperature sensor. The temperature sensor is arranged on the housing 31 and is used to detect the liquid temperature in the fluid passage. The temperature sensor is electrically connected to the temperature controller 34, and the temperature controller 34 is used to receive the temperature signal of the temperature sensor and control the operation of the first heating component 32 according to the received temperature signal. By setting the temperature sensor, the liquid temperature value in the fluid passage can be obtained in real time, so that the water temperature in the fluid passage can be ensured to be within the standard temperature value range under the cooperation of the temperature sensor and the temperature controller 34. On the one hand, it effectively avoids the situation that the water temperature is lower than the temperature standard, resulting in insufficient time for the water temperature to reach the standard and affecting the disinfection effect; on the other hand, when the water temperature reaches the appropriate value, it can be better controlled in a constant temperature state, avoiding the occurrence of energy waste caused by too high water temperature, thereby improving the heating efficiency of the heating device 3.

[0063] As Figure 4 shown, in addition to the features of the above embodiments, this embodiment further defines that the heating device 3 further includes a fuse 35. The fuse 35 is arranged on the housing 31 and / or the fixing component 33, and the fuse 35 is used to cut off the connection between the first heating component 32 and the power supply to achieve overcurrent protection of the circuit. The fuse 35 is used as an overcurrent protection device, which is used to disconnect the power supply of the whole device when the current of the first heating component 32 is too large, so as to prevent damage to electronic equipment.

[0064] As Figure 2 and Figure 6 shown, in addition to the features of the above embodiments, this embodiment further defines that the heating pump 21 includes a motor, a pump housing 211, an impeller and a second heating component 212. The motor and the second heating component 212 are respectively arranged on the pump housing 211. The pump housing 211 has a pump chamber, a pump inlet 201 and a pump outlet 202 communicating with the pump chamber. The impeller is installed in the pump chamber and is electrically connected to the motor. By adopting the above structure, when the motor drives the impeller to rotate, a driving force can be generated to drive the washing water to flow from the pump inlet 201 to the pump outlet 202. At the same time, the second heating component 212 is arranged on the pump housing 211 to heat the water flow, and the decontamination ability of the washing water can be improved by raising the temperature.

[0065] An embodiment of the second aspect of the present invention provides a heating and washing control method for a dishwasher, as Figure 2 and Figure 7As shown, the dishwasher includes a dishwasher main body 1 and a spray arm assembly, a water supply mechanism 2, a heating device 3 and a control device provided on the dishwasher main body 1. The spray arm assembly is configured to spray washing water into the washing cavity 101 of the dishwasher main body 1. The water supply mechanism 2 includes a heating pump 21, and the heating pump 21 is used to heat the washing water and supply the washing water to the spray arm assembly and / or the washing cavity 101. The heating device 3 is provided with a fluid channel, and the heating pump 21 is communicated with the washing cavity 101 through the fluid channel. The heating device 3 is used to heat the washing water flowing through the fluid channel. The control device is electrically connected to the water supply mechanism 2 and the heating device 3 respectively; the heating and washing control method includes the following steps: S1: The control device receives user input and the washing program is started; S3: According to the user input, the dishwasher is controlled to enter the corresponding washing mode. The washing mode at least includes a normal washing mode and a high-temperature washing mode. The water supply mechanism 2 and the heating device 3 are started respectively according to the washing mode, and the flow rate of the washing water entering the spray arm assembly and the washing cavity 101 is allocated. The heating and washing control method of the dishwasher disclosed in the second aspect of the present application has at least two washing modes of "normal washing" and "high-temperature washing". By switching different washing modes, the outflow direction of the washing water and the heating temperature can be controlled. Specifically, in the high-temperature washing mode, the heating device 3 can perform secondary heating on the washing water outside the heating pump 21, so that the water temperature of the washing water can reach the high-temperature disinfection standard efficiently, while avoiding the bubble problem caused by the over-high water temperature heated by the heating pump 21, and ensuring the effective implementation of the washing and high-temperature disinfection functions of the dishwasher.

[0066] In addition to the features of the above embodiments, this embodiment further defines that: in the normal washing mode, the heating pump 21 is started, the washing water is pumped in and preliminarily heated, and then the washing water is driven to flow to the spray arm assembly at a preset flow rate L1. The spray arm assembly is started to spray the washing water into the washing cavity 101 to spray and wash the tableware; in the high-temperature washing mode, the heating pump 21 is started, the washing water is pumped in and preliminarily heated, and then the washing water is driven to flow to the washing cavity 101 at a preset flow rate L2. When the washing water flows to the washing cavity 101, the heating device 3 performs secondary heating on the washing water flowing through the fluid channel to the disinfection standard temperature to perform high-temperature disinfection on the tableware. When the "normal washing" mode is selected, the washing water output by the heating pump 21 will flow to the spray arm assembly at a preset flow rate L1 for it to spray and clean the tableware in the washing cavity 101. At the same time, the temperature of the washing water rises after being preliminarily heated by the heating pump 21, so that the decontamination ability of the washing water is enhanced; when the "high-temperature washing" mode is selected, the washing water output by the heating pump 21 will flow to the washing cavity 101 at a preset flow rate L2. When the washing water flows to the washing cavity 101, the temperature rises to the disinfection standard under the secondary heating of the heating device 3 to realize the disinfection and sterilization function of the dishwasher for the tableware.

[0067] As Figure 2 and Figure 8As shown, in addition to the features of the above embodiments, this embodiment further defines that the water supply mechanism 2 further includes a water cup 22. The water cup 22 is communicated with the pump inlet 201 of the heating pump 21. The water cup 22 is located at the bottom of the dishwasher main body 1 and is communicated with the washing cavity 101. The specific process of step S3 is as follows: S31: Select a washing mode according to the application scenario requirements. Start the water supply mechanism 2 and the heating device 3 respectively according to the requirements of the washing mode, and allocate the washing water flow rate into the spray arm assembly and the washing cavity 101; S32: After the washing water in the washing cavity 101 washes the tableware, it flows back into the water cup 22, and is pumped out by the heating pump 21 and transported to the spray arm assembly and / or the washing cavity 101 for recycling until the washing work is completed. By providing a water cup 22 on the dishwasher main body 1 for storing washing water, the pump inlet 201 of the heating pump 21 can be directly connected to the water cup 22 to pump the washing water in the water cup 22 to the spray arm assembly, etc. The washing water entering the washing cavity 101 will fall to the bottom of the washing cavity 101 under the action of gravity after washing the tableware and further flow back into the water cup 22. Thus, a water circulation system can be formed. Without using a large amount of water sources, the tableware can be thoroughly cleaned, while also saving detergent and energy, and the operation is convenient, which is beneficial to improving the washing efficiency of the dishwasher.

[0068] As Figure 9 As shown, in addition to the features of the above embodiments, this embodiment further defines that the water supply mechanism 2 further includes a water inlet assembly. The water inlet assembly is communicated with an external water source and is used for transporting washing water to the water cup 22 or the washing cavity 101. Before step S3, the heating and washing control method further includes: S2: When the water volume in the water cup 22 is less than the preset water volume, the water inlet assembly is communicated with the external water source to transport the required washing water to the water cup 22 or the washing cavity 101. When the washing water in the water cup 22 is insufficient, the control device can control the water inlet assembly to be communicated with the external water source and input washing water to the water cup 22 or the washing cavity 101. Thus, the manual operation can be simplified, making the dishwashing work more convenient. At the same time, the quantitative control of the washing water can be realized, so as to facilitate the confirmation of the detergent dosage parameters, which is beneficial to improving the cleaning efficiency.

[0069] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0070] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A dishwasher, characterized in that, Comprising: A dishwasher main body (1), wherein the dishwasher main body (1) is provided with a washing cavity (101); A spray arm assembly, which is arranged on the dishwasher main body (1) and is configured to spray washing water into the washing cavity (101); A water supply mechanism (2), which is arranged on the dishwasher main body (1), and the water supply mechanism (2) includes a heating pump (21), and the heating pump (21) is used to supply washing water to the spray arm assembly and / or the washing cavity (101), and the heating pump (21) is used to heat the washing water; A heating device (3), which is provided with a fluid passage, and the heating pump (21) is communicated with the washing cavity (101) through the fluid passage, and the heating device (3) is used to heat the washing water flowing through the fluid passage; A control device, which is arranged on the dishwasher main body (1), and the control device is electrically connected to the heating pump (21) and the heating device (3) respectively.

2. The dishwasher according to claim 1, characterized in that, The water supply mechanism (2) further includes a water cup (22), the water cup (22) is arranged on the dishwasher main body (1), the heating pump (21) is communicated with the water cup (22), the spray arm assembly and the washing cavity (101) respectively, and the heating pump (21) is used to transport the washing water in the water cup (22) to the spray arm assembly and / or the washing cavity (101).

3. The dishwasher according to claim 2, wherein: The water cup (22) is located at the bottom of the dishwasher main body (1), and the water cup (22) is communicated with the washing cavity (101); and / or The water supply mechanism (2) further includes a water inlet assembly, the water inlet assembly is communicated with an external water source, and the water inlet assembly is used to transport washing water to the water cup (22) or the washing cavity (101), and the water inlet assembly is electrically connected to the control device.

4. The dishwasher according to claim 1, wherein, The water supply mechanism (2) further includes a water delivery pipe (23), one end of the water delivery pipe (23) is communicated with the pump outlet (202) of the heating pump (21), the other end of the water delivery pipe (23) is communicated with the spray arm assembly, a branch pipe (231) is arranged on the water delivery pipe (23), the branch pipe (231) is communicated with the washing cavity (101), and the heating device (3) is arranged on the branch pipe.

5. The dishwasher according to claim 4, wherein: The water supply mechanism (2) further includes a control valve, the control valve is arranged on the water delivery pipe (23), and the control valve is used to distribute the flow rate of the washing water respectively entering the spray arm assembly and the washing cavity (101); or The water supply mechanism (2) further includes a check valve, the check valve is located at one end of the branch pipe close to the heating pump (21), and the check valve is used to prevent the washing liquid entering the fluid passage from flowing back into the heating pump (21).

6. The dishwasher according to claim 1, characterized in that, The heating device (3) includes a housing (31) and a first heating component (32). The housing (31) is provided with the fluid passage. The first heating component (32) is disposed on the housing (31) assembly. The first heating component (32) is electrically connected to the control device, and the first heating component (32) is configured to heat the washing water in the fluid passage.

7. A heating and washing control method for a dishwasher, characterized in that, The dishwasher includes a dishwasher main body (1) and a spray arm assembly, a water supply mechanism (2), a heating device (3) and a control device disposed on the dishwasher main body (1). The spray arm assembly is configured to spray washing water into a washing cavity (101) of the dishwasher main body (1). The water supply mechanism (2) includes a heating pump (21). The heating pump (21) is configured to heat the washing water and supply the washing water to the spray arm assembly and / or the washing cavity (101). The heating device (3) is provided with a fluid passage. The heating pump (21) is in communication with the washing cavity (101) through the fluid passage. The heating device (3) is configured to heat the washing water flowing through the fluid passage. The control device is electrically connected to the water supply mechanism (2) and the heating device (3) respectively. The heating and washing control method includes the following steps: S1: The control device receives user input and the washing program is started. S3: Control the dishwasher to enter a corresponding washing mode according to user input. The washing mode includes at least a normal washing mode and a high-temperature washing mode. Start the water supply mechanism (2) and the heating device (3) respectively according to the washing mode, and allocate the flow rate of the washing water entering the spray arm assembly and the washing cavity (101).

8. The heating and washing control method of the dishwasher according to claim 7, wherein In the normal washing mode, the heating pump (21) is started. After the washing water is pumped in and preliminarily heated, the washing water is driven to flow towards the spray arm assembly at a preset flow rate L1, and the spray arm assembly sprays the washing water into the washing cavity (101) to wash the tableware. In the high-temperature washing mode, the heating pump (21) is started. After the washing water is pumped in and preliminarily heated, the washing water is driven to flow towards the washing cavity (101) at a preset flow rate L2. When the washing water flows towards the washing cavity (101), the heating device (3) secondarily heats the washing water flowing through the fluid passage to the disinfection standard temperature to perform high-temperature disinfection on the tableware.

9. The heating and washing control method of the dishwasher according to claim 7, characterized in that, The water supply mechanism (2) further includes a water cup (22). The water cup (22) is in communication with the pump inlet (201) of the heating pump (21). The water cup (22) is located at the bottom of the dishwasher main body (1). The water cup (22) is in communication with the washing cavity (101). The specific process of step S3 is as follows: S31: Select a washing mode according to the application scenario requirements. Start the water supply mechanism (2) and the heating device (3) respectively according to the requirements of the washing mode, and allocate the flow rate of the washing water entering the spray arm assembly and the washing cavity (101). S32: After the tableware is cleaned by the washing water in the washing cavity (101), the washing water flows back into the water cup (22), and is pumped out by the heat pump (21) and conveyed to the spray arm assembly and / or the washing cavity (101) for recycling until the washing work is completed.

10. The heating and washing control method of the dishwasher according to claim 9, wherein The water supply mechanism (2) further includes a water inlet assembly, the water inlet assembly is communicated with an external water source, and the water inlet assembly is used for conveying washing water to the water cup (22) or the washing cavity (101). Before step S3, the heating and washing control method further includes: S2: When the water volume in the water cup (22) is less than the preset water volume, the water inlet assembly is communicated with the external water source to convey the required washing water to the water cup (22) or the washing cavity (101).

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