Dishwasher

Abstract

The utility model relates to dish washer technical field discloses dish washer, including washing system and heat exchange system, washing system includes water tank and washing pump, and water tank and washing pump intercommunication, heat exchange system includes working medium compression unit and refrigerant circulation pipeline, working medium compression unit includes air inlet and exhaust port, refrigerant circulation pipeline includes heating pipe and cooling pipe, heating pipe is located in water tank, and one end communicates with the exhaust port of working medium compression unit, and the other end communicates with cooling pipe, cooling pipe surrounds and sets up in the outer periphery of washing pump, and communicates with the air inlet of working medium compression unit, the utility model utilizes the refrigerant of higher temperature to heat the washing water in water tank, and the pump body is cooled with the help of the refrigerant of temperature reduction, reaches the high -efficient heat dissipation of pump body, and the both are synchronous, not only satisfy the requirement to water temperature in the washing process, guarantee the normal stable operation of washing pump, but also improved the comprehensive utilization of energy, reduced overall energy consumption, realized the dual goal of energy -conserving and high -efficient operation.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, specifically to dishwashers. Background Technology

[0002] In the dishwasher's washing process, to achieve good cleaning results, the water needs to be heated using a heating element while a washing pump circulates the water to wash the dishes. Since the heating element often needs to run continuously for extended periods, this results in significant energy consumption. Furthermore, the high water temperature can cause thermal expansion of internal components in the washing pump, reduced lubrication, and accelerated aging of seals, thus affecting the pump's lifespan and operational stability, ultimately reducing the dishwasher's overall performance and reliability. Utility Model Content

[0003] In view of this, the present invention provides a dishwasher to solve the problems of high power consumption and high water temperature affecting the operational stability of the washing pump.

[0004] This utility model provides a dishwasher, including a washing system and a heat exchange system; the washing system includes a water tank and a washing pump, the water tank and the washing pump being connected; the heat exchange system includes a working fluid compression unit and a refrigerant circulation pipeline; the working fluid compression unit includes an air inlet and an air outlet; the refrigerant circulation pipeline includes a heating pipe and a cooling pipe, the heating pipe being located inside the water tank, with one end of the heating pipe connected to the air outlet of the working fluid compression unit and the other end connected to the cooling pipe; the cooling pipe is arranged around the outer periphery of the washing pump and is connected to the air inlet of the working fluid compression unit.

[0005] Beneficial effects: By using a refrigerant with a higher temperature discharged from the working fluid compression unit, heat exchange occurs between the refrigerant and the washing water inside the tank as it flows through the heating pipe. This transfers heat to the washing water, raising its temperature while the refrigerant's temperature decreases, effectively heating the washing water and replacing some of the previously electrically powered heating processes, thus saving energy. Simultaneously, the cooled refrigerant enters the cooling pipe and, utilizing the refrigerant's phase change endothermic principle, undergoes a phase change from liquid to gas within the cooling pipe, absorbing a large amount of heat from the surrounding environment, thereby actively cooling the pump body. However, this effectively reduces the operating temperature of the pump body. Lowering the pump body's operating temperature reduces energy loss and performance degradation caused by higher temperatures, thereby improving the efficiency of the washing pump and extending its service life. This application utilizes a high-temperature refrigerant to heat the washing water in the tank, and a lower-temperature refrigerant to cool the pump body, achieving efficient heat dissipation. These two processes occur simultaneously, not only meeting the water temperature requirements during washing and ensuring the normal and stable operation of the washing pump, but also improving the overall energy utilization rate and reducing overall energy consumption, thus achieving the dual goals of energy saving and efficient operation.

[0006] In one alternative embodiment, the section of the heating tube located inside the water tank is a first section, and the first section is spiral-shaped.

[0007] Beneficial effects: By setting the first pipe section to a spiral structure, the length of the first pipe section can be increased, thereby increasing the contact area between the first pipe section and the washing water in the water tank, promoting more complete and efficient heat transfer, and thus effectively improving the overall heat exchange efficiency.

[0008] In one alternative embodiment, the cooling pipe includes a second pipe section that is spirally arranged around the outer periphery of the washing pump.

[0009] Beneficial effects: By setting the second pipe section to a spiral structure, the length of the second pipe section can be increased, thereby increasing the contact area between the second pipe section and the washing pump, promoting more complete and efficient heat transfer, and thus effectively improving the overall heat exchange efficiency.

[0010] In one alternative embodiment, the washing pump includes a mounting groove arranged in a spiral around the outer periphery of the washing pump, and the second pipe section is located within the mounting groove.

[0011] Beneficial effects: By setting an installation groove on the outer periphery of the washing pump, the second pipe section can be embedded into the housing of the washing pump, making full use of the space around the washing pump. This allows for a more reasonable layout of the second connecting pipe within a limited space, optimizing the overall structure and meeting the assembly requirements of compact equipment. Furthermore, the installation groove provides reliable positioning and support for the second connecting pipe, fixing and protecting it, enhancing the connection strength between the connecting pipe and the washing pump, reducing the risk of pipe shaking or damage due to external factors, ensuring the stability and reliability of system operation, and extending service life.

[0012] In one alternative embodiment, the mounting groove has a semi-circular cross-section that matches the shape of the second pipe segment.

[0013] Beneficial effects: By designing the mounting groove with a semi-circular cross-section to match the shape of the second pipe section, the contact area between the mounting groove and the second pipe section is increased, effectively enhancing heat transfer efficiency and accelerating the cooling speed of the washing pump.

[0014] In one optional embodiment, the refrigerant circulation pipeline further includes a first connecting pipe, the two ends of which are respectively connected to the heating pipe and the cooling pipe, and the diameter of the first connecting pipe is smaller than the diameter of the heating pipe.

[0015] Beneficial effects: By setting a first connecting pipe between the heating pipe and the cooling pipe, and the diameter of the first connecting pipe is smaller than that of the heating pipe, the refrigerant flowing out of the heating pipe will experience a sudden reduction in flow cross-sectional area when it flows into the first connecting pipe, resulting in flow resistance, throttling and pressure reduction, lowering the temperature of the refrigerant, and improving the heat absorption efficiency when it flows through the cooling pipe around the washing pump.

[0016] In one alternative embodiment, the first connecting tube is a capillary tube.

[0017] Beneficial effects: Due to the extremely small diameter of the capillary tube, the diameter of the first connecting tube is smaller than that of the heating tube. When the high-temperature, high-pressure liquid refrigerant flowing from the heating tube enters the capillary tube, the flow cross-sectional area decreases sharply, creating flow resistance. This results in an efficient throttling and pressure reduction effect, lowering the temperature of the refrigerant. When the refrigerant, now at a lower temperature, flows through the cooling tube around the washing pump, there is a greater temperature difference with the surrounding environment, enhancing its heat absorption capacity. This significantly improves the heat absorption efficiency of the cooling tube for the washing pump, thereby increasing the cooling efficiency of the washing pump. This effectively ensures the washing pump operates stably at a suitable temperature and extends its service life.

[0018] In one optional embodiment, the refrigerant circulation pipeline further includes an exhaust pipe, the two ends of which are connected to the exhaust port and the heating pipe, respectively.

[0019] Beneficial effects: By setting up an exhaust pipe, it is easier to connect the exhaust port of the working fluid compression unit with the heating pipe, which simplifies the system structure, reduces unnecessary parts and complex piping connections, and reduces the difficulty of installation and maintenance.

[0020] In one optional embodiment, the refrigerant circulation pipeline further includes a return pipe, the two ends of which are connected to the cooling pipe and the air inlet, respectively.

[0021] Beneficial effects: By setting up a return gas pipe, it is easier to connect the cooling pipe to the air inlet of the working fluid compression unit, which simplifies the system structure, reduces unnecessary parts and complex piping connections, and lowers the difficulty of installation and maintenance.

[0022] In one alternative embodiment, the washing system further includes a heating element connected between the water tank and the washing pump, and communicatively connected to the control system for heating the washing water.

[0023] Beneficial effects: By setting up a communication connection between the heating element and the control system, when the temperature of the washing water heated by the heating element does not reach the set temperature, the control system controls the heating element to further heat the washing water to ensure that the washing water can reach the set temperature, thereby achieving a better washing effect. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the connection between the washing system and the heat exchange system in an embodiment of the present invention;

[0026] Figure 2 This is a top view of the water tank according to an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the heat exchange system according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the heating tube structure according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the cooling pipe structure according to an embodiment of the present invention;

[0030] Figure 6This is a schematic diagram of the structure of the first connecting pipe in an embodiment of the present utility model;

[0031] Figure 7 This is a schematic diagram of the exhaust pipe structure according to an embodiment of the present utility model;

[0032] Figure 8 This is a schematic diagram of the return air pipe according to an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 11. Water tank; 12. Washing pump; 13. Heating element; 2. Heat exchange system; 21. Working fluid compression unit; 221. Heating element; 2211. First pipe section; 2212. First inlet end; 2213. First outlet end; 222. Cooling pipe; 2221. Second pipe section; 2222. Second inlet end; 2223. Second outlet end; 223. First connecting pipe; 224. Exhaust pipe; 225. Return pipe. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] The following is combined Figures 1 to 8 The following describes embodiments of the present invention.

[0037] According to an embodiment of the present invention, a dishwasher is provided, including a washing system and a heat exchange system 2; the washing system includes a water tank 11 and a washing pump 12, the water tank 11 and the washing pump 12 being connected; the heat exchange system 2 includes a working fluid compression unit 21 and a refrigerant circulation pipeline; the working fluid compression unit 21 includes an air inlet and an air outlet; the refrigerant circulation pipeline includes a heating pipe 221 and a cooling pipe 222, the heating pipe 221 being located inside the water tank 11, and one end of the heating pipe 221 being connected to the air outlet of the working fluid compression unit 21, and the other end being connected to the cooling pipe 222; the cooling pipe 222 is arranged around the outer periphery of the washing pump 12 and is connected to the air inlet of the working fluid compression unit 21.

[0038] In the above embodiment, the refrigerant discharged from the working fluid compression unit 21 at a higher temperature exchanges heat with the washing water inside the water tank 11 as it flows through the heating pipe 221, transferring heat to the washing water and raising its temperature while lowering the refrigerant temperature. This achieves the function of heating the washing water, effectively replacing some of the steps that originally required electric heating, thus saving energy consumption. Simultaneously, after the refrigerant enters the cooling pipe 222, it undergoes a phase change within the cooling pipe 222, changing from a liquid to a gaseous state, absorbing a large amount of heat from the surrounding environment, thereby actively heating the pump. The pump body is cooled, effectively reducing its operating temperature. This lower operating temperature reduces energy loss and performance degradation caused by high temperatures, thereby improving the efficiency of the washing pump 12 and extending its service life. This application uses a high-temperature refrigerant to heat the washing water in the water tank 11 and uses a lower-temperature refrigerant to cool the pump body, achieving efficient heat dissipation. The two processes are carried out simultaneously, which not only meets the water temperature requirements during the washing process and ensures the normal and stable operation of the washing pump 12, but also improves the comprehensive utilization rate of energy, reduces overall energy consumption, and achieves the dual goals of energy saving and efficient operation.

[0039] Preferably, the working fluid compression unit 21 is a compressor.

[0040] In one embodiment, the section of the heating tube 221 located inside the water tank 11 is a first section 2211, and the first section 2211 is spiral-shaped.

[0041] In the above embodiment, by setting the first pipe section 2211 as a spiral structure, the length of the first pipe section 2211 can be increased, thereby increasing the contact area between the first pipe section 2211 and the washing water in the water tank 11, promoting more sufficient and efficient heat transfer, and thus effectively improving the overall heat exchange efficiency.

[0042] In a specific embodiment, the heating tube 221 further includes a first extension tube and a second extension tube; one end of the first extension tube is located outside the water tank 11 and communicates with the exhaust port of the working fluid compression unit 21, and the other end extends into the interior of the water tank 11 and is connected to one end of the first pipe section 2211. One end of the second extension tube is located inside the water tank 11 and is connected to the other end of the first pipe section 2211, and the other end extends outside the water tank 11 and communicates with the air inlet of the working fluid compression unit 21.

[0043] In a specific implementation, the first pipe section 2211 is immersed in the washing water in the water tank 11, so as to fully transfer heat to the washing water.

[0044] In one embodiment, the cooling pipe 222 includes a second pipe segment 2221, which is arranged in a spiral shape around the outer periphery of the washing pump 12.

[0045] In the above embodiment, by setting the second pipe section 2221 as a spiral structure, the length of the second pipe section 2221 can be increased, thereby increasing the contact area between the second pipe section 2221 and the washing pump 12, promoting more sufficient and efficient heat transfer, and thus effectively improving the overall heat exchange efficiency.

[0046] In one embodiment, the washing pump 12 includes a mounting groove that is spirally arranged around the outer periphery of the washing pump 12, and the second pipe section 2221 is located within the mounting groove.

[0047] In the above embodiment, by providing an installation groove on the outer periphery of the washing pump 12, the second pipe section 2221 is embedded into the outer shell of the washing pump 12. This makes full use of the space around the washing pump 12, allowing the second connecting pipe to achieve a more reasonable layout within a limited space, optimizing the overall structure and meeting the assembly requirements of compact equipment. Furthermore, the installation groove provides reliable positioning and support for the second connecting pipe, fixing and protecting it, enhancing the connection strength between the connecting pipe and the washing pump 12, reducing the risk of the connecting pipe shaking or being damaged due to external factors, ensuring the stability and reliability of the system operation, and extending its service life.

[0048] In one embodiment, the cross-section of the mounting groove is semi-circular, matching the shape of the second pipe segment 2221.

[0049] In the above embodiment, by designing the mounting groove as a semi-circular cross section to match the shape of the second pipe section 2221, the contact area between the mounting groove and the second pipe section 2221 is increased, which effectively enhances the heat transfer efficiency and accelerates the cooling speed of the washing pump 12.

[0050] In one embodiment, the refrigerant circulation pipeline further includes a first connecting pipe 223, the two ends of which are respectively connected to the heating pipe 221 and the cooling pipe 222, and the diameter of the first connecting pipe 223 is smaller than the diameter of the heating pipe 221.

[0051] In the above embodiment, by providing a first connecting pipe 223 between the heating pipe 221 and the cooling pipe 222, and the diameter of the first connecting pipe 223 is smaller than the diameter of the heating pipe 221, the refrigerant flowing out of the heating pipe 221 will experience a sudden reduction in flow cross-sectional area when flowing into the first connecting pipe 223, resulting in flow resistance, throttling and pressure reduction, lowering the temperature of the refrigerant, and improving the heat absorption efficiency when it flows through the cooling pipe 222 around the washing pump 12.

[0052] In one embodiment, the first connecting tube 223 is a capillary tube.

[0053] In the above embodiment, since the capillary tube itself has a very small diameter, it ensures that the diameter of the first connecting tube 223 is smaller than that of the heating tube 221. When the high-temperature and high-pressure liquid refrigerant flowing out of the heating tube 221 flows into the capillary tube, the flow cross-sectional area decreases sharply, which creates flow resistance, thereby generating an efficient throttling and pressure reduction effect and lowering the temperature of the refrigerant. When the refrigerant with the reduced temperature flows through the cooling tube 222 on the outer periphery of the washing pump 12, there is a larger temperature difference with the surrounding environment, and the heat absorption capacity is enhanced. This significantly improves the heat absorption efficiency of the cooling tube 222 for the washing pump 12, thereby improving the cooling efficiency of the washing pump 12, effectively ensuring that the washing pump 12 operates stably at a suitable temperature, and extending the service life of the washing pump 12.

[0054] Furthermore, the first connecting pipe 223 can be spiral-shaped, which can effectively increase the length of the first connecting pipe 223 within a limited installation space. As the refrigerant exchanges heat with the ambient air during its flow within the first connecting pipe 223, the longer the first connecting pipe 223, the greater the contact time and area between the refrigerant and the surrounding air, resulting in more thorough heat exchange and further improving the cooling effect on the refrigerant.

[0055] In one embodiment, the refrigerant circulation pipeline further includes an exhaust pipe, the two ends of which are connected to the exhaust port and the heating pipe 221, respectively.

[0056] In the above embodiments, by setting an exhaust pipe, it is helpful to realize the connection between the exhaust port of the working fluid compression unit 21 and the heating pipe 221, which simplifies the system structure, reduces unnecessary parts and complex pipeline connections, and reduces the difficulty of installation and maintenance.

[0057] In a specific embodiment, the heating tube 221 includes a first inlet end 2212 and a first outlet end 2213. The first inlet end 2212 is flared to facilitate the connection between the heating tube 221 and the exhaust pipe. The first outlet end 2213 is constricted to facilitate the connection between the heating tube 221 and the first connecting pipe 223.

[0058] In one embodiment, the refrigerant circulation pipeline further includes a return pipe, the two ends of which are connected to the cooling pipe 222 and the air inlet, respectively.

[0059] In the above embodiments, by setting up a return air pipe, it is helpful to realize the connection between the cooling pipe 222 and the air inlet of the working fluid compression unit 21, which simplifies the system structure, reduces unnecessary parts and complex pipeline connections, and reduces the difficulty of installation and maintenance.

[0060] In a specific embodiment, the cooling pipe 222 includes a second inlet end 2222 and a second outlet end 2223. The second inlet end 2222 is narrowed to facilitate the connection between the cooling pipe 222 and the first connecting pipe 223. The second outlet end 2223 is widened to facilitate the connection between the cooling pipe 222 and the return pipe.

[0061] In one embodiment, the washing system further includes a heating element 13, which is connected between the water tank 11 and the washing pump 12 and is communicatively connected to the control system for heating the washing water.

[0062] In the above embodiment, by setting the heating element 13 to communicate with the control system, when the temperature of the washing water heated by the heating element 221 does not reach the set temperature, the control system controls the heating element 13 to further heat the washing water to ensure that the washing water can reach the set temperature, so as to achieve a better washing effect.

[0063] In a specific implementation, during the dishwasher's heating process, heating element 221 first heats the washing water in the tank 11, bringing it to a certain initial temperature. When further heating is needed to meet washing process requirements, and heating element 13 is activated to heat the washing water, the temperature difference that heating element 13 needs to overcome to heat the water to the set temperature is significantly reduced compared to starting from cold water. Therefore, the time required for heating element 13 to heat the washing water to the set temperature is shorter, resulting in less energy consumption. Thus, the design of heating element 221 effectively reduces the time and energy consumption required for subsequent heating by heating element 13.

[0064] In a specific implementation, the heating element 13 is an electric heating element 221.

[0065] Specifically, the dishwasher has different washing programs for different types of dishes. When it is necessary to clean dishes with high levels of grease and stubborn stains, the temperature of the washing water heated by the heating element 221 does not reach the set temperature required for washing. The dishwasher's control system controls the heating element 13 to further heat the washing water, thereby increasing the temperature of the washing water and ensuring that the washing water reaches the set temperature for better washing results.

[0066] In this embodiment, the ratio of electricity consumed by the heating element 13 to the heat generated is 1:1; however, the ratio of electricity consumed by the heat exchange system 2 to the heat generated exceeds 3:1. Therefore, this application can achieve the effect of energy saving.

[0067] In a specific implementation, the inlet end of the heating element 13 is connected to the outlet end of the water tank 11, and the outlet end of the heating element 13 is connected to the inlet end of the washing pump 12; the outlet end of the washing pump 12 is connected to the inlet end of the water tank 11. Specifically, as shown... Figure 1 As shown, the washing water flows sequentially through the water tank 11, the heating element 13, the washing pump 12, and the water tank 11.

[0068] In this embodiment, the washing water in the water tank 11 is room temperature water. The temperature of the refrigerant discharged from the working fluid compression unit 21 is higher than that of the washing water. The refrigerant passes through the exhaust pipe and enters the heating pipe 221. The heat of the refrigerant is transferred from the heating pipe 221 to the washing water in the water tank 11, raising the temperature of the washing water in the water tank 11. At the same time, it cools the refrigerant in the heating pipe 221, changing the refrigerant from a gaseous state to a liquid state. Then, the refrigerant passes through the capillary tube for throttling, further reducing its temperature. The cooled refrigerant flows through the cooling pipe 222, carrying away the heat from the washing pump 12, reducing the temperature of the washing pump 12, and improving the working efficiency of the washing pump 12. Then, the refrigerant returns to the working fluid compression unit 21 through the return pipe.

[0069] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A dishwasher, characterized in that, include: The washing system includes a water tank (11) and a washing pump (12), the water tank (11) and the washing pump (12) being connected; The heat exchange system (2) includes a working fluid compression unit (21) and a refrigerant circulation pipeline; the working fluid compression unit (21) includes an air inlet and an exhaust outlet; the refrigerant circulation pipeline includes a heating pipe (221) and a cooling pipe (222), the heating pipe (221) is located in the water tank (11), and one end of the heating pipe (221) is connected to the exhaust outlet of the working fluid compression unit (21), and the other end is connected to the cooling pipe (222); the cooling pipe (222) is arranged around the outer periphery of the washing pump (12) and is connected to the air inlet of the working fluid compression unit (21).

2. The dishwasher according to claim 1, characterized in that, The section of the heating tube (221) located inside the water tank (11) is the first section (2211), and the first section (2211) is spiral-shaped.

3. The dishwasher according to claim 1, characterized in that, The cooling pipe (222) includes a second pipe section (2221) which is arranged in a spiral around the outer periphery of the washing pump (12).

4. The dishwasher according to claim 3, characterized in that, The washing pump (12) includes a mounting groove, which is spirally arranged around the outer periphery of the washing pump (12), and the second pipe section (2221) is located in the mounting groove.

5. The dishwasher according to claim 4, characterized in that, The cross-section of the mounting groove is semi-circular, matching the shape of the second pipe section (2221).

6. The dishwasher according to any one of claims 1 to 5, characterized in that, The refrigerant circulation pipeline also includes a first connecting pipe (223), the two ends of which are connected to the heating pipe (221) and the cooling pipe (222) respectively, and the diameter of the first connecting pipe (223) is smaller than the diameter of the heating pipe (221).

7. The dishwasher according to claim 6, characterized in that, The first connecting tube (223) is a capillary tube.

8. The dishwasher according to any one of claims 1 to 5 or 7, characterized in that, The refrigerant circulation pipeline also includes an exhaust pipe, the two ends of which are connected to the exhaust port and the heating pipe (221) respectively.

9. The dishwasher according to any one of claims 1 to 5 or 7, characterized in that, The refrigerant circulation pipeline also includes a return pipe, the two ends of which are connected to the cooling pipe (222) and the air inlet, respectively.

10. The dishwasher according to any one of claims 1 to 5 or 7, characterized in that, The washing system also includes a heating element (13), which is connected between the water tank (11) and the washing pump (12) and is in communication with the control system for heating the washing water.

Images