Water inlet and outlet pipeline assembly, control method and dish washing machine

Abstract

The invention relates to the technical field of dishwashers, and particularly provides a water inlet and outlet pipeline assembly, a control method and a dishwasher. The water inlet and outlet pipeline assembly comprises a water inlet pipeline, and the water inlet pipeline is provided with a water receiving end and a machine receiving end which are oppositely arranged; an electric control valve is arranged at the water receiving end; the water receiving end is further provided with a first temperature sensor. A second temperature sensor is arranged in the water inlet tank; a third temperature sensor is arranged at the pickup end; the water outlet pipeline is provided with a machine outlet end and a water flowing end which are oppositely arranged, the machine outlet end is used for being connected with a waste water pipeline in the dish-washing machine, the waste water pipeline is provided with a water drain valve, and the water flowing end is used for discharging waste water out of the dish-washing machine; the water inlet pipeline and the water outlet pipeline are sleeved with the heat conduction sleeve layer. The heat-insulating sleeve layer is sleeved on the heat-conducting sleeve layer; the control module is electrically connected with the first temperature sensor, the second temperature sensor and the third temperature sensor. The heat exchange function is integrated in the water inlet and outlet pipeline assembly, use of a large heat exchanger is avoided, and the size of the assembly is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of dishwashers, and in particular to an inlet and outlet pipe assembly, a control method and a dishwasher. Background Art

[0002] A dishwasher is a household appliance used to automatically wash dishes, cups, pots and other tableware. It sprays the surface of the tableware with high-temperature and high-pressure water, and combines it with special detergents to effectively remove stains such as oil and food residues on the tableware, achieving the effect of cleaning and disinfection. The dishwasher products currently on the market mainly rely on heated washing water and strong water flow to complete the cleaning of tableware. In a complete washing program, it usually includes multiple stages of water intake, washing heating and drainage, and each stage requires heating normal temperature tap water to a specific temperature. This process usually consumes 1kWh to 3kWh of electricity, which increases the user's usage cost, brings a large economic burden to daily use, and also limits the market popularity of dishwasher products to a certain extent.

[0003] However, in order to reduce energy consumption, some existing dishwashers have installed heat exchangers in the inlet and outlet pipe assemblies, using the hot waste water discharged from washing to preliminarily heat the tap water entering the dishwasher. In order to ensure a good heat exchange effect, this type of heat exchanger usually requires a larger volume, which causes the overall size of the dishwasher to increase, occupying more household space and affecting the user experience.

[0004] Therefore, the prior art has defects and deficiencies and needs further improvement and development. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide an inlet and outlet pipe assembly, a control method and a dishwasher, aiming to solve the problem in the prior art that an additional heat exchanger is provided in the inlet and outlet pipe assembly, resulting in a larger overall volume of the inlet and outlet pipe assembly.

[0006] The technical solution adopted by the present application to solve the technical problem is as follows: an inlet and outlet pipe assembly for water inlet and outlet of a dishwasher, comprising: A water inlet pipeline, wherein the water inlet pipeline has a water receiving end and a machine receiving end arranged opposite to each other, the water receiving end is used to connect to a water source, and the machine receiving end is used to connect to a water inlet tank of the dishwasher; the water receiving end is provided with an electric regulating valve; the water receiving end is also provided with a first temperature sensor; a second temperature sensor is provided in the water inlet tank; and a third temperature sensor is provided at the machine receiving end; A water outlet pipeline, wherein the water inlet pipeline and the water outlet pipeline are spaced apart from each other, the water outlet pipeline has an outlet end and a water flow end which are arranged opposite to each other, the outlet end is used to be connected to a waste water pipeline inside the dishwasher, the waste water pipeline is provided with a drain valve, and the water flow end is used to discharge waste water to the outside of the dishwasher; A heat-conducting sleeve layer, wherein the heat-conducting sleeve layer is sleeved on the water inlet pipe and the water outlet pipe; A thermal insulation sleeve layer, wherein the thermal insulation sleeve layer is sleeved on the heat conductive sleeve layer; A control module is electrically connected to the drain valve, the electric regulating valve, the first temperature sensor, the second temperature sensor and the third temperature sensor.

[0007] Optionally, the volume of waste water discharged by the dishwasher in one washing cycle is smaller than the volume of the water outlet pipe.

[0008] Optionally, the inlet and outlet pipe assembly also includes a hot wastewater speed reduction pipe, which is arranged on the outlet end and is detachably connected to the outlet end, and is used to reduce the flow rate of hot wastewater generated by the dishwasher entering the outlet pipe.

[0009] Optionally, the hot wastewater deceleration pipe is sequentially provided with a first bent tube, a second bent tube and a third bent tube along the wastewater outflow direction, and the angle between the axis of the first bent tube and the axis of the second bent tube is set to 90°~180°, and the angle between the axis of the second bent tube and the axis of the third bent tube is set to 80°~120°.

[0010] Optionally, the diameter of the first bent tube is smaller than the diameter of the second bent tube, the diameter of the third bent tube is smaller than the diameter of the second bent tube; the diameter of the third bent tube is smaller than the diameter of the first bent tube.

[0011] Optionally, the heat-conducting sleeve layer is provided with a plurality of heat-conducting aluminum fins, a plurality of deformation stress release holes spaced apart from each other are provided between the plurality of heat-conducting aluminum fins, and the plurality of deformation stress release holes are used to accommodate deformation stress release parts.

[0012] Optionally, a plurality of bending grooves are formed at the outer edge of the thermal insulation sleeve.

[0013] Optionally, the widths of the plurality of bending grooves gradually increase along the wastewater outflow direction.

[0014] The technical solution adopted by the present application to solve the technical problem is as follows: a control method, which includes the water inlet and outlet pipeline assembly as described above, and the control method includes: The second temperature sensor detects the temperature of the water to be drained in the water inlet tank, and the control module determines whether to start the heat exchange program; During the heat exchange process, the control module monitors the temperature values ​​of the first temperature sensor and the third temperature sensor in real time, and dynamically adjusts the opening of the electric regulating valve according to the temperature difference between the water inlet and the water outlet of the water inlet pipeline to control the water inlet flow rate; When the heat exchange termination conditions are met, close the electric regulating valve, and replenish the remaining water intake after drainage is completed.

[0015] The technical solution adopted by the present application to solve the technical problem is as follows: a dishwasher, which includes the inlet and outlet pipe assembly as described above; the dishwasher includes: Dishwasher housing; The water inlet and outlet pipe assembly is arranged in the housing of the dishwasher; A water inlet tank, the water inlet tank being arranged in the housing of the dishwasher; The water inlet box is provided with a water discharge port and a water inlet, the water discharge port is provided with a water discharge valve, the outlet end is connected to one end of the water discharge valve; the other end of the water discharge valve is connected to the inner tank of the dishwasher; the water inlet is connected to the machine connection end.

[0016] Compared with the prior art, the present application provides an inlet and outlet pipe assembly, a control method and a dishwasher. The inlet and outlet pipes improve the heat energy transfer efficiency by arranging a heat-conducting sleeve layer and a heat-insulating sleeve layer on the water inlet pipe and the water outlet pipe, effectively utilize the waste heat of the washing waste water to preheat the tap water, and reduce the overall energy consumption of the dishwasher. Furthermore, by integrating the heat exchange function into the inlet and outlet pipe assembly, the use of a large heat exchanger is avoided, the volume of the assembly is effectively reduced, and the overall structural design of the dishwasher is optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the water inlet and outlet pipe assembly provided in this application; Figure 2 is a rear view of the water inlet and outlet pipe assembly provided in this application; Figure 3 This application provides Figure 2 A cross-sectional view along the Ⅰ-Ⅰ direction; Figure 4 It is a three-dimensional structural schematic diagram of another perspective of the water inlet and outlet pipe assembly provided in the present application; Figure 5 It is a schematic block diagram of the functional principle of the water inlet and outlet pipe assembly provided in this application; Figure 6 It is a schematic flow chart of the control method provided in this application; Figure 7 It is a schematic block diagram of the specific process of the control method provided in this application; Figure 8 It is a schematic diagram of the composition of the dishwasher and the inlet and outlet pipe assembly provided in this application; Fig. 9 It is another schematic diagram of the structure of the dishwasher and the water inlet and outlet pipe assembly provided in this application.

[0018] Description of reference numerals: 10. Inlet and outlet pipe assembly; 11. Inlet pipe; 111. Water connection end; 112. Machine connection end; 1121. Water inlet tank; 1111. First temperature sensor; 1122. Second temperature sensor; 1123. Third temperature sensor; 1125. Drain valve; 1126. Electric regulating valve; 12. Outlet pipe; 121. Machine connection end; 122. Water flow end; 13. Thermal sleeve; 131. Thermal aluminum fin; 1311. Deformation stress release hole; 132. Deformation stress release part; 14. Insulation sleeve; 141. Bending groove; 15. Control module; 16. Hot wastewater deceleration pipe; 161. First bending pipe; 162. Second bending pipe; 163. Third bending pipe; 20. Dishwasher; 21. Dishwasher housing. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] Please refer to Figures 1 to 5The first embodiment of the present application provides an inlet and outlet pipe assembly 10, which includes an inlet pipe 11, an outlet pipe 12, a heat-conducting sleeve 13, a heat-insulating sleeve 14, an electric regulating valve 1126, a first temperature sensor 1111, a second temperature sensor 1122, a third temperature sensor 1123, an electric regulating valve 1126, a drain valve 1125 and a control module 15. The inlet pipe 11 has a water receiving end 111 and a machine receiving end 112, the water receiving end 111 is connected to an external water source, and the machine receiving end 112 is connected to a water inlet tank 1121 of a dishwasher 20. An electric regulating valve 1126 is provided on the water receiving end 111 for adjusting the water flow entry speed to ensure the stability of the water flow. The first temperature sensor 1111 is provided at the water receiving end 111 for detecting the temperature of the tap water entering the dishwasher 20. The second temperature sensor 1122 is located in the water inlet tank 1121, and is used to detect the water temperature in the water inlet tank 1121 in real time. The third temperature sensor 1123 is located at the machine connection end 112 to monitor the change in water temperature entering the dishwasher 20. The water outlet pipe 12 has an outlet end 121 and a water flow end 122. The outlet end 121 is connected to the waste water pipe inside the dishwasher 20, and the water flow end 122 is used to discharge the waste water outside the dishwasher 20. The heat-conducting sleeve 13 is sleeved on the outside of the water inlet pipe 11 and the water outlet pipe 12 to achieve heat transfer between the two. The heat-insulating sleeve 14 is sleeved on the outside of the heat-conducting sleeve 13 to reduce heat loss and improve heat transfer efficiency. The control module 15 is electrically connected to the drain valve 1125, the electric regulating valve 1126, the first temperature sensor 1111, the second temperature sensor 1122 and the third temperature sensor 1123, and the water temperature and water flow are intelligently controlled and adjusted through real-time data monitoring and feedback. When the dishwasher 20 enters the water inlet stage, external tap water enters the water inlet pipe 11 through the water receiving end 111. The electric regulating valve 1126 adjusts the water inlet flow rate according to the water temperature data detected in real time by the first temperature sensor 1111 to ensure that the speed and temperature of the tap water entering the dishwasher 20 are within a reasonable range. The second temperature sensor 1122 detects the water temperature in the water inlet tank 1121 in real time to ensure that the water temperature reaches the specific temperature required for washing dishes. The control module 15 analyzes the received temperature data and accurately controls the electric regulating valve 1126 to ensure that the water flow and temperature are stable. When the dishwasher 20 enters the drainage stage, the dishwashing waste water is discharged through the outlet end 121 of the outlet pipe 12. The discharged waste water flows through the heat conductive sleeve 13 and exchanges heat with the cold water in the water inlet pipe 11. In this process, the waste heat of the waste water is transferred to the incoming cold water, thereby preliminarily heating the tap water, reducing the load of the dishwasher 20 heater and reducing energy consumption. The third temperature sensor 1123 monitors the water temperature of the receiving end 112 in real time to ensure that the water temperature after heat exchange reaches the expected effect. The heat-conducting sleeve 13 ensures efficient heat transfer between the water inlet pipe 11 and the water outlet pipe 12 to reduce heat loss.The heat-insulating jacket 14 further reduces the loss of heat during the transfer process, maintains the stability and continuity of heat transfer, and improves the overall heat recovery efficiency. As the core of the entire system, the control module 15 receives data from the first temperature sensor 1111, the second temperature sensor 1122, and the third temperature sensor 1123, and performs analysis and calculation. According to the real-time temperature data, the control module 15 regulates the electric regulating valve 1126 to ensure the precise matching of the inlet water temperature and the water flow rate, and ensures that the dishwashing process is carried out efficiently and stably. The inlet pipe 11 and the outlet pipe 12 exchange heat under the action of the heat-conducting jacket 13, effectively recover the waste heat in the wastewater, and reduce the energy consumption of the dishwasher 20. The heat-insulating jacket 14 reduces the loss during the heat transfer process and ensures the efficiency of the heat exchange process. The electric regulating valve 1126 works closely with the first temperature sensor 1111, the second temperature sensor 1122, and the third temperature sensor 1123, and is precisely regulated by the control module 15 to ensure the stability of the inlet water temperature. The control module 15 serves as the control core of the entire water inlet and outlet pipeline assembly 10 and coordinates and controls various components to achieve the goals of efficient heat recovery and stable water inlet temperature.

[0023] Please refer to Figures 1 to 5The inlet and outlet pipe assembly 10 includes an inlet pipe 11, an outlet pipe 12, a heat-conducting sleeve 13, a heat-insulating sleeve 14 and a control module 15; the inlet pipe 11 has a water receiving end 111 and a machine receiving end 112 arranged relatively, the water receiving end 111 is used to connect to the water source, and the machine receiving end 112 is used to connect to the water inlet tank 1121 of the dishwasher 20; the water receiving end 111 is provided with an electric regulating valve 1126; the water receiving end 111 is also provided with a first temperature sensor 1111; a second temperature sensor 1122 is arranged in the water inlet tank 1121; the machine receiving end 112 is provided with a third temperature sensor 1123; the outlet pipe 12 has an outlet end 121 and a water flow end 122 arranged relatively, the outlet end 121 is used to connect to the waste water pipe inside the dishwasher 20, the waste water pipe is provided with a drain valve, and the water flow end 122 is used to The waste water is discharged to the outside of the dishwasher 20; the water inlet pipe 11 and the water outlet pipe 12 are arranged at intervals, and the heat-conducting sleeve 13 is sleeved on the water inlet pipe 11 and the water outlet pipe 12; the heat-insulating sleeve 14 is sleeved on the heat-conducting sleeve 13; the control module 15 is electrically connected to the first temperature sensor 1111, the second temperature sensor 1122 and the third temperature sensor 1123, so as to realize the automation and intelligence of the heat exchange process, and then by arranging the heat-conducting sleeve 13 and the heat-insulating sleeve 14 on the water inlet pipe 11 and the water outlet pipe 12, the heat energy transfer efficiency is improved, the residual heat of the washing waste water is effectively used to preheat the tap water, and the overall energy consumption of the dishwasher 20 is reduced. By integrating the heat exchange function in the water inlet and outlet pipe assembly 10, the use of a large heat exchanger is avoided, the volume of the assembly is effectively reduced, and the overall structural design of the dishwasher 20 is optimized.

[0024] Please refer to Figure 1 In some embodiments, the volume of wastewater discharged by the dishwasher 20 in one washing cycle is smaller than the volume of the water outlet pipe 12, so that the wastewater stays in the water outlet pipe 12 for a longer time, which is conducive to the full transfer of heat, improves the overall heat exchange effect, ensures that the heat exchange process between wastewater and cold water is more stable, avoids poor heat exchange effect due to water volume mismatch, avoids the use of large heat exchangers, effectively reduces the volume of components, and optimizes the overall structural design of the dishwasher 20.

[0025] Please refer to Figure 4In some embodiments, the water inlet and outlet pipe assembly 10 further includes a hot waste water deceleration pipe 16, which is sleeved on the outlet end 121. The hot waste water deceleration pipe 16 is detachably connected to the outlet end 121, so as to facilitate cleaning and maintenance by users and reduce the failure rate. The hot waste water deceleration pipe 16 is used to reduce the flow rate of hot waste water generated by the dishwasher 20 entering the outlet pipe 12, and then reduce the waste water flow rate through the hot waste water deceleration pipe 16, so that the waste water stays in the outlet pipe 12 for a longer time, thereby improving the heat exchange efficiency, reducing the impact of high-speed waste water on the pipe, reducing water flow noise, and extending the service life of the pipe.

[0026] Please refer to Figure 4 In some embodiments, the hot wastewater deceleration pipe 16 is sequentially provided with a first bent pipe 161, a second bent pipe 162 and a third bent pipe 163 along the wastewater outflow direction, thereby extending the flow path of the wastewater in the pipeline; the angle between the axis of the first bent pipe 161 and the axis of the second bent pipe 162 is set to 90°~180°, and the angle between the axis of the second bent pipe 162 and the axis of the third bent pipe 163 is set to 80°~120°, thereby effectively reducing the water flow velocity, reducing the pipeline impact force, and extending the service life of the components.

[0027] In some embodiments, the diameter of the first bent tube 161 is smaller than the diameter of the second bent tube 162, and the diameter of the third bent tube 163 is smaller than the diameter of the second bent tube 162; the diameter of the third bent tube 163 is smaller than the diameter of the first bent tube 161, thereby effectively preventing the water flow from being turbulent at the bend, ensuring the stability of the water flow, and increasing the residence time of the water flow in the pipeline, which is conducive to more sufficient heat exchange.

[0028] Please refer to Figure 3 In some embodiments, the heat-conducting sleeve 13 is provided with a plurality of heat-conducting aluminum fins 131, so that the heat-conducting aluminum fins 131 increase the heat-conducting area and improve the heat transfer efficiency; a plurality of deformation stress release holes 1311 are provided between the plurality of heat-conducting aluminum fins 131, and the plurality of deformation stress release holes 1311 are used to accommodate deformation stress release parts 132, so that the stress generated during thermal expansion and contraction is effectively released through the deformation stress release holes 1311, thereby preventing the heat-conducting sleeve 13 from deformation or cracking during use.

[0029] Please refer to Figure 4 In some embodiments, the outer edge of the thermal insulation sleeve 14 has a plurality of bending grooves 141, thereby increasing the flexibility of the thermal insulation sleeve 14, reducing the structural stress caused by thermal expansion and contraction, making the thermal insulation sleeve 14 fit the pipeline more closely, and reducing heat loss.

[0030] Please refer to Figure 4 In some embodiments, the width of the plurality of bending grooves 141 gradually increases along the wastewater outflow direction.

[0031] In some embodiments, the control module includes a micro control unit and a control program register, wherein the control program register is used to store the heat exchange set temperature T.

[0032] Please refer to Figure 6 and Figure 7 The technical solution adopted by the present application to solve the technical problem is as follows: a control method, which includes the water inlet and outlet pipeline assembly as described above, and the control method includes: Please refer to Figure 6 , step S100, detecting the water temperature to be drained in the water inlet tank by the second temperature sensor, and the control module determines whether to start the heat exchange program; Specifically, the second temperature sensor is installed in the water inlet tank and is used to detect the temperature value T of the water to be drained in the water inlet tank in real time. 2 When the control module receives the temperature data transmitted by the second temperature sensor, it will convert the temperature value T 2 The detected temperature value T is compared with the heat exchange set temperature T preset in the control module. 2 If the temperature is lower than the preset heat exchange setting temperature T, the control module will not start the heat exchange program, but will directly discharge the waste water through the outlet pipe alone, and then add new water through the inlet pipe after the drainage is completed. 2 If the temperature is higher than the heat exchange set temperature T, the control module starts the heat exchange program to preheat the tap water in the water inlet pipeline and reduce the energy consumption of water heating.

[0033] Please refer to Figure 6 , step S200, during the heat exchange process, the control module monitors the temperature values ​​of the first temperature sensor and the third temperature sensor in real time, and dynamically adjusts the opening of the electric regulating valve according to the temperature difference between the water inlet and the water outlet of the water inlet pipeline to control the water inlet flow; Specifically, after the heat exchange program is started, the control module reads in real time the temperature value T detected by the first temperature sensor installed at the water receiving end of the water inlet pipe. 1 , and the temperature value T detected by the third temperature sensor installed at the receiving end 3 The control module compares the temperature difference between the two sensors (T 3 -T 1 ), dynamically adjust the opening of the electric regulating valve installed at the water receiving end to control the water flow entering the water inlet pipeline. 3 -T 1 The minimum set temperature T at which heat exchange can continuenmin and the intermediate value of sustainable heat exchange during heat exchange (T nmin +T nmax ) / 2, the water inlet electric valve can be controlled to reduce the water inlet flow rate, improve the heat exchange efficiency and the water outlet temperature after heat exchange. 3 -T 1 ) temperature value, the maximum set temperature T at which heat exchange can continue nmax and the intermediate value of sustainable heat exchange during heat exchange (T nmin +T nmax ) / 2, the water inlet electric valve can be controlled to increase the water inlet flow, improve the water inlet efficiency, and ensure that the water temperature entering the water inlet tank reaches the expected heating effect, thereby reducing the energy consumption of the dishwasher and improving the washing efficiency.

[0034] Please refer to Figure 6 , step S300, when the heat exchange termination condition is met, close the electric regulating valve, and replenish the remaining water intake after the drainage is completed.

[0035] Specifically, when the control module detects the temperature difference (T 3 -T 1 ) is less than the minimum set temperature T at which heat exchange can continue nmin , it is determined that the current heat exchange process has been completed. At this time, the control module will close the electric regulating valve set at the water receiving end, stop the water flow of the water inlet pipe, and continue to complete the discharge process of the remaining wastewater in the water inlet tank through the water outlet pipe. When the drainage is completed, the control module will open the electric regulating valve again according to the pre-recorded remaining water inlet data to replenish the required remaining clean water to ensure that the water intake of the dishwasher meets the cleaning needs of the next stage. This control method effectively avoids the waste of water resources and energy, and improves the working efficiency of the inlet and outlet pipe components and the overall performance of the dishwasher.

[0036] Please refer to Figure 8 and Fig. 9 The technical solution adopted by the present application to solve the technical problem is as follows: a dishwasher 20, which includes the above-mentioned water inlet and outlet pipe assembly 10; the dishwasher 20 includes: a dishwasher housing 21; the water inlet and outlet pipe assembly 10 is arranged in the dishwasher housing 21; a water inlet tank 1121, the water inlet tank 1121 is arranged in the dishwasher housing 21, the water inlet tank 1121 is provided with a water discharge port and a water inlet, a water discharge valve 1125 is provided at the water discharge port, the outlet end 121 is connected to one end of the water discharge valve 1125; the other end of the water discharge valve 1125 is connected to the inner tank of the dishwasher 20; the water inlet is connected to the connecting end 112.

[0037] In some embodiments, the dishwasher 20 is composed of a temperature sensor in a water inlet tank and an electric regulating valve 1126 on the water inlet pipe 11. The opening angle of the electric regulating valve 1126 can be adjusted by data comparison according to the temperature value detected by the temperature sensor at the end of the stage-by-stage washing, thereby controlling the water flow in the tap water inlet channel and achieving the effect of adjusting the thermal efficiency of the water inlet and outlet pipe assembly 10.

[0038] In some embodiments, during the water intake process of the dishwasher 20, the tap water outlet is provided with an electric water inlet regulating valve 1126. According to the different temperatures of the hot water to be discharged in different washing programs of the dishwasher 20, the temperature value can be detected to control the water inlet flow rate of the electric regulating valve 1126, so as to achieve the maximum utilization rate of the heat exchange efficiency.

[0039] In some embodiments, during the washing inlet and outlet process, the dishwasher 20 can more fully transfer the temperature of hot and cold water according to the temperature difference of the cross flow of the inlet and outlet pipes, increase the temperature of the tap water outlet of the water inlet pipe 11, and reduce the power consumption of heating water during the washing process. This improves the thermal energy utilization of the dishwasher 20 product and can improve the energy efficiency of the entire machine.

[0040] In summary, the present application provides an inlet and outlet pipe assembly, a control method and a dishwasher, wherein the inlet and outlet pipe assembly comprises: an inlet pipe, wherein the inlet pipe has a water receiving end and a machine receiving end arranged oppositely, wherein the water receiving end is used to connect a water source, and wherein the machine receiving end is used to connect to a water inlet tank of the dishwasher; the water receiving end is provided with an electric regulating valve; the water receiving end is also provided with a first temperature sensor; a second temperature sensor is provided in the water inlet tank; and a third temperature sensor is provided at the machine receiving end; an outlet pipe, wherein the outlet pipe has an outlet end and a water flow end arranged oppositely, wherein the outlet end is used to connect to a waste water pipe inside the dishwasher, wherein the waste water pipe is provided with a drain valve, and wherein the water flow end is used to discharge waste water to the outside of the dishwasher; a heat conductive sleeve, wherein the heat conductive sleeve is sleeved on the inlet pipe and the outlet pipe; a heat insulating sleeve, wherein the heat insulating sleeve is sleeved on the heat conductive sleeve; and a control module, wherein the control module is electrically connected to the drain valve, the electric regulating valve, the first temperature sensor, the second temperature sensor and the third temperature sensor. Furthermore, by arranging heat-conducting sleeves and thermal insulation sleeves on the water inlet and outlet pipes, the heat energy transfer efficiency is improved, the waste heat of washing waste water is effectively used to preheat the tap water, and the overall energy consumption of the dishwasher is reduced. By integrating the heat exchange function into the inlet and outlet pipe components, the use of large heat exchangers is avoided, the component volume is effectively reduced, and the overall structural design of the dishwasher is optimized.

[0041] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A water inlet and outlet pipe assembly, used for water inlet and outlet of a dishwasher, characterized in that: The water inlet and outlet pipeline assembly comprises: A water inlet pipeline, wherein the water inlet pipeline has a water receiving end and a machine receiving end arranged opposite to each other, the water receiving end is used to connect to a water source, and the machine receiving end is used to connect to a water inlet tank of the dishwasher; the water receiving end is provided with an electric regulating valve; the water receiving end is also provided with a first temperature sensor; a second temperature sensor is provided in the water inlet tank; and a third temperature sensor is provided at the machine receiving end; A water outlet pipeline, wherein the water inlet pipeline and the water outlet pipeline are spaced apart from each other, the water outlet pipeline has an outlet end and a water flow end which are arranged opposite to each other, the outlet end is used to be connected to a waste water pipeline inside the dishwasher, the waste water pipeline is provided with a drain valve, and the water flow end is used to discharge waste water to the outside of the dishwasher; A heat-conducting sleeve layer, wherein the heat-conducting sleeve layer is sleeved on the water inlet pipe and the water outlet pipe; A thermal insulation sleeve layer, wherein the thermal insulation sleeve layer is sleeved on the heat conductive sleeve layer; A control module is electrically connected to the drain valve, the electric regulating valve, the first temperature sensor, the second temperature sensor and the third temperature sensor.

2. The water inlet and outlet pipe assembly according to claim 1, characterized in that: The volume of waste water discharged by the dishwasher in one washing cycle is smaller than the volume of the water outlet pipe.

3. The water inlet and outlet pipe assembly according to claim 1, characterized in that: The inlet and outlet pipe assembly also includes a hot wastewater speed reduction pipe, which is arranged on the outlet end and is detachably connected to the outlet end. The hot wastewater speed reduction pipe is used to reduce the flow rate of the hot wastewater generated by the dishwasher entering the outlet pipe.

4. The water inlet and outlet pipe assembly according to claim 3, characterized in that: The hot wastewater deceleration pipe is sequentially provided with a first bent pipe, a second bent pipe and a third bent pipe along the wastewater outflow direction, the angle between the axis of the first bent pipe and the axis of the second bent pipe is set to 90°~180°, and the angle between the axis of the second bent pipe and the axis of the third bent pipe is set to 80°~120°.

5. The water inlet and outlet pipe assembly according to claim 4, characterized in that: The diameter of the first bent tube is smaller than that of the second bent tube, the diameter of the third bent tube is smaller than that of the second bent tube; and the diameter of the third bent tube is smaller than that of the first bent tube.

6. The water inlet and outlet pipe assembly according to claim 5, characterized in that: The heat-conducting sleeve layer is provided with a plurality of heat-conducting aluminum fins, and a plurality of deformation stress release holes arranged at intervals from each other are opened between the plurality of heat-conducting aluminum fins, and the plurality of deformation stress release holes are used to accommodate deformation stress release parts.

7. The water inlet and outlet pipe assembly according to claim 5, characterized in that: A plurality of bending grooves are formed at the outer edge of the thermal insulation sleeve.

8. The water inlet and outlet pipe assembly according to claim 7, characterized in that: The widths of the bent grooves gradually increase along the wastewater outflow direction.

9. A control method, characterized in that: The control method comprises the water inlet and outlet pipe assembly according to any one of claims 1 to 8, and the control method comprises: The second temperature sensor detects the temperature of the water to be drained in the water inlet tank, and the control module determines whether to start the heat exchange program; During the heat exchange process, the control module monitors the temperature values ​​of the first temperature sensor and the third temperature sensor in real time, and dynamically adjusts the opening of the electric regulating valve according to the temperature difference between the water inlet and the water outlet of the water inlet pipeline to control the water inlet flow rate; When the heat exchange termination conditions are met, close the electric regulating valve, and replenish the remaining water intake after drainage is completed.

10. A dishwasher, characterized in that: The dishwasher comprises the water inlet and outlet pipe assembly according to any one of claims 1 to 8; the dishwasher comprises: Dishwasher housing; The water inlet and outlet pipe assembly is arranged in the housing of the dishwasher; A water inlet tank, the water inlet tank being arranged in the housing of the dishwasher; The water inlet box is provided with a water discharge port and a water inlet, the water discharge port is provided with a water discharge valve, the outlet end is connected to one end of the water discharge valve; the other end of the water discharge valve is connected to the inner tank of the dishwasher; the water inlet is connected to the machine connection end.

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