Heat exchange water tank and purified drinking equipment

Abstract

The utility model belongs to the technical field of water supply, and particularly discloses a heat exchange water tank and purified drinking equipment. The heat exchange water tank comprises a water storage tank and a heat exchange structure; the water storage tank is provided with a water storage cavity and a water tank water inlet communicated with the water storage cavity; the heat exchange structure is installed on the water storage tank and provided with a refrigerant heat exchange channel and a water heat exchange channel, the refrigerant heat exchange channel is used for introducing a refrigerant, one of the water heat exchange channel and the water tank water inlet is used for introducing waste water generated by the filtering device, and the other one is used for being communicated with a pure water outlet of the filtering device; and a refrigerant in the refrigerant heat exchange channel can exchange heat with water in the water heat exchange channel and the water storage tank. According to the heat exchange and heat dissipation structure, heat dissipation and cooling can be conducted on the refrigerant through waste water and pure water generated by the filtering device, the structural compactness of the heat exchange and heat dissipation structure is improved, the cooling and heat dissipation effect of the refrigerant is effectively guaranteed, miniaturization of the water purifying and drinking equipment is facilitated, and the use experience of the water purifying and drinking equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of water supply technology, and in particular to a hot water exchange tank and a drinking water purification device. Background Technology

[0002] A water purifier is a device that can produce pure drinking water by filtering water. As people pay more and more attention to water safety, water purifiers are being used more and more widely in households.

[0003] To better meet users' diverse water needs, some existing water purification devices have ice-making functions. That is, the water purification device includes a filtration module and an ice-making module. The filtration module is used to filter the water entering the filtration device to produce pure water. The ice-making module includes an ice-making chamber and a compressor, heat exchanger, electronic expansion valve and evaporator arranged in series along the refrigerant flow direction. The evaporator is set in the ice-making chamber to make ice. The heat exchanger is set outside the ice-making chamber and is equipped with a fan to guide the external airflow through the heat exchanger to cool down the refrigerant inside the heat exchanger.

[0004] While existing water purification devices can simultaneously fulfill both ice-making and purified water drinking functions, the large footprint of the ice-making module due to the heat exchanger relying on external airflow guided by a fan hinders the miniaturization of the water purification device. Furthermore, the limited internal space restricts the size of the fan, resulting in ineffective airflow guiding the cooling air to the heat exchanger. This can lead to insufficient cooling of the refrigerant within the heat exchanger, affecting the long-term normal operation of the ice-making module. Utility Model Content

[0005] One of the technical problems solved by this utility model is to provide a hot water exchange tank that can effectively solve the problems of large space occupation and poor heat exchange effect of existing water purification equipment with ice-making function.

[0006] The second technical problem solved by this utility model is to provide a water purification device that can effectively solve the problems of large space occupation and poor heat exchange effect of existing water purification devices with ice-making function.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A hot water exchange tank, the hot water exchange tank comprising:

[0009] A water storage tank, having a water storage cavity and a water tank inlet communicating with the water storage cavity;

[0010] A heat exchange structure is installed in the water storage tank and has a refrigerant heat exchange channel and a water heat exchange channel. The refrigerant heat exchange channel is used to introduce refrigerant. One of the water heat exchange channel and the water tank inlet is used to introduce wastewater generated by the filtration device, and the other is used to connect to the pure water outlet of the filtration device. The refrigerant in the refrigerant heat exchange channel can exchange heat with the water in the water heat exchange channel and the water in the water storage tank.

[0011] The hot water tank for water purification equipment described in this utility model has the following advantages compared to the prior art: Since both the water in the storage chamber and the water in the water heat exchange channel can exchange heat with the refrigerant in the refrigerant heat exchange channel, it can better meet the condensation and cooling effect of the refrigerant in the refrigerant heat exchange channel, ensuring the long-term reliable operation of the ice-making function; simultaneously, it uses pure water and wastewater generated by the filtration device to exchange heat with the refrigerant in the heat exchange structure, and the storage tank is a relatively conventional structure in water purification equipment, which can effectively utilize the existing structure of the water purification equipment for heat dissipation without the need for an additional fan to dissipate heat from the heat exchange structure. Alternatively, while ensuring effective refrigerant cooling, the size of the fan can be reduced to decrease the overall space of the water purifier and lower costs. Because of the included water tank, water can be added to the tank even when there is no demand for drinking water, thus allowing the ice-making function to operate regardless of whether there is a need for pure water, increasing ice-making flexibility. Furthermore, the pure water flowing from the outlet absorbs heat at the heat exchange structure, becoming warm water to meet users' needs for warm drinking water, reducing the cost of heating drinking water and improving the user experience of the water purifier.

[0012] In one embodiment, the main structure of the heat exchange structure is located inside the water storage chamber, and the inlet and outlet ends of the heat exchange structure are sealed through the water storage tank.

[0013] In one embodiment, the refrigerant heat exchange channel includes a refrigerant main channel extending spirally from top to bottom, and the water heat exchange channel includes a water main channel extending spirally from top to bottom, wherein the refrigerant main channel and the water main channel are coaxially arranged.

[0014] And / or, the heat exchange structure includes an inner heat exchange tube and an outer heat exchange tube sleeved outside the inner heat exchange tube, the inner cavity of the inner heat exchange tube forms the water heat exchange channel, and the inner heat exchange tube and the outer heat exchange tube form the refrigerant heat exchange channel.

[0015] In one embodiment, the heat exchange outer tube includes a refrigerant main pipe section spirally wound from top to bottom. The refrigerant main pipe section is located inside the water storage chamber, and the inner cavity forms the refrigerant main channel. A first connector pipe section is connected to the upper end of the refrigerant main pipe section, and a second connector pipe section is connected to the lower end of the refrigerant main pipe section. The second connector pipe section extends from bottom to top and its upper end is higher than that of the refrigerant main pipe section. Both the first connector pipe section and the second connector pipe section are sealed through the water storage tank.

[0016] In one embodiment, the water tank inlet is higher than the refrigerant main pipe.

[0017] In one embodiment, the water storage tank includes a tank body with an open top and a tank cover that can be detachably installed on the tank body, and the heat exchange structure can be detachably installed inside the tank body;

[0018] And / or, the bottom of the water storage tank is provided with a water tank outlet, the water tank outlet is connected to a water outlet pipe, and the water tank outlet or the water outlet pipe is selectively connected.

[0019] In one embodiment, a liquid level detection device is installed on the water storage tank, and the liquid level detection device extends into the water storage cavity to detect the liquid level in the water storage cavity;

[0020] And / or, a temperature detection device is installed on the water storage tank, and the temperature measuring end of the temperature detection device extends into the water storage cavity to detect the water temperature in the water storage cavity.

[0021] In one embodiment, the temperature sensor is installed at the bottom of the water tank; and / or, the level sensor is installed at the top of the water tank.

[0022] The second technical problem mentioned above is solved by the following technical solution:

[0023] A water purification device includes a filtration unit having a pure water outlet and a wastewater outlet. The device also includes a compressor, a throttling device, an evaporator, and a water exchange tank. The compressor, the refrigerant heat exchange channel, the throttling device, and the evaporator are sequentially and circulated in the direction of refrigerant flow. One of the pure water outlet and the wastewater outlet is connected to the water heat exchange channel, and the other of the pure water outlet and the wastewater outlet is connected to the water storage chamber.

[0024] Compared with the prior art, the drinking water equipment described in this utility model has the following advantages: by adopting the above-mentioned hot water exchange tank, it is possible to improve the overall structural compactness of the drinking water equipment, reduce the floor space, and facilitate the miniaturization of the drinking water equipment while satisfying the condensation and cooling effect of the refrigerant.

[0025] In one embodiment, the pure water outlet is connected to the water tank inlet via a first pure water pipe, the water storage tank is provided with a water tank outlet, the water tank outlet is provided with an outlet pipe, and a bypass pipe is connected between the outlet pipe and the first pure water pipe, so that the bypass pipe, the first pure water pipe, the water storage tank and the outlet pipe are connected end to end in sequence to form a heat exchange circulation loop, and a water pump is provided on the heat exchange circulation loop;

[0026] And / or, the water purification equipment further includes a raw water tank, which is connected to the raw water inlet of the filtration device, the wastewater outlet is connected to the inlet end of the water heat exchange channel, and the outlet end of the water heat exchange channel is connected to the raw water tank.

[0027] In one embodiment, the water purification device further includes a raw water tank, which is connected to the raw water inlet of the filtration device, and the wastewater outlet is connected to the water tank inlet. The water storage tank is provided with a water tank outlet, which is connected to the raw water tank. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the water circuit structure of the drinking water purification device provided in Embodiment 1 of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the hot water exchange tank provided in Embodiment 1 of this utility model;

[0030] Figure 3 A cross-sectional view of the hot water exchange tank provided in Embodiment 1 of this utility model;

[0031] Figure 4 for Figure 3 A magnified view of a section at point I;

[0032] Figure 5 This is a schematic diagram of the water circuit structure of the drinking water purification device provided in Embodiment 2 of this utility model;

[0033] Figure 6 This is a schematic diagram of the water circuit structure of the drinking water purification device provided in Embodiment 3 of this utility model.

[0034] Label Explanation:

[0035] 1. Hot water tank; 11. Water storage tank; 111. Tank body; 112. Tank cover; 113. Water storage cavity; 114. Inlet pipe; 115. Outlet pipe; 12. Heat exchange structure; 121. Inner heat exchange pipe; 1211. Water heat exchange channel; 122. Outer heat exchange pipe; 1221. Refrigerant main pipe; 1222. First connector pipe; 1223. Second connector pipe; 1224. Refrigerant heat exchange channel; 13. Liquid level detection element; 14. Temperature detection element; 15. Locking nut;

[0036] 2. Filter device; 3. Compressor; 4. Throttling device; 5. Evaporator; 6. Dryer; 7. Water pump; 8. Heating element; 9. Water vapor separator; 10. Ice making chamber; 20. Booster pump; 30. Pre-filter; 40. Raw water tank;

[0037] 101. First pure water pipe; 102. Second pure water pipe; 103. Outlet pipe; 104. Wastewater pipe; 105. Return pipe; 106. Bypass pipe; 107. Pure water supply pipe;

[0038] 201. Pure water control valve; 202. Ice-making control valve; 203. Wastewater control valve; 204. Outlet water control valve; 205. Inlet water control valve; 206. Flow detection device. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] Example 1

[0044] This embodiment provides a water purification device with ice-making function, which can simultaneously meet the needs of ice making and drinking water preparation, while improving the condensation and heat dissipation effect of the refrigerant during ice making, reducing the footprint of the heat exchange structure and the corresponding heat dissipation structure, reducing costs, and improving the user experience of the water purification device.

[0045] like Figures 1 to 4 As shown, the water purification equipment includes a compressor 3, a hot water tank 1, a throttling device 4, an evaporator 5, and a filter device 2. The filter device 2 has a raw water inlet, a pure water outlet, and a wastewater outlet. Raw water enters the filter element of the filter device 2 through the raw water inlet and is filtered to produce pure water. The pure water flows out through the pure water outlet, and the wastewater generated during the filtration process flows out through the wastewater outlet. The hot water tank 1 includes a water storage tank 11 and a heat exchange structure 12. The water storage tank 11 has a water storage cavity 113 and a water tank inlet connected to the water storage tank 11. The heat exchange structure 12 is installed on the water storage tank 11 and has a refrigerant heat exchange channel 1224 and a water heat exchange channel 1211 for mutual heat exchange. The compressor 3, the refrigerant heat exchange channel 1224, the throttling device 4 and the evaporator 5 are connected end to end along the refrigerant flow direction to form a refrigerant circulation loop. One of the water heat exchange channel 1211 and the water tank inlet is connected to the wastewater outlet to allow the wastewater generated by the filter device 2 to pass through, and the other is connected to the pure water outlet of the filter device 2. The refrigerant in the refrigerant heat exchange channel 1224 can exchange heat with the water in the water heat exchange channel 1211 and the water storage cavity 113.

[0046] In this embodiment, the hot water tank 1 and the water purification equipment, when both the compressor 3 and the filter device 2 are running, the high-temperature and high-pressure gaseous refrigerant sprayed from the compressor 3 flows through the heat exchange structure 12. As the heat is absorbed by the water in the water heat exchange channel 1211 and the water storage chamber 113, the refrigerant is cooled down and becomes a high-pressure and medium-temperature liquid refrigerant. The cooled refrigerant flows to the throttling device 4 and is throttled and cooled by the throttling device 4 to form a low-temperature and low-pressure saturated liquid refrigerant. The saturated liquid refrigerant releases heat and heats up at the evaporator 5, becoming a low-pressure and medium-temperature gaseous refrigerant, and then flows back to the compressor 3 to form a refrigerant ice-making cycle to meet the ice-making needs.

[0047] That is, the water exchange tank 1 provided in this embodiment can exchange heat with the refrigerant in the refrigerant heat exchange channel 1224 because the water in the water storage chamber 113 and the water in the water heat exchange channel 1211 can both exchange heat with the refrigerant in the refrigerant heat exchange channel 1224. This can better meet the condensation and cooling effect of the refrigerant in the refrigerant heat exchange channel 1224, ensuring the long-term reliable operation of the ice-making function. At the same time, the pure water and wastewater generated by the filter device 2 are used to exchange heat with the refrigerant in the heat exchange structure 12. Moreover, the water storage tank 11 is a relatively conventional structure in drinking water purification equipment. It can better utilize the existing structure in the drinking water purification equipment for heat dissipation without the need for an additional fan to dissipate heat from the heat exchange structure 12. While ensuring the refrigerant's heat dissipation effect, the size of the fan is reduced to minimize the overall space of the water purifier and lower costs. Because of the water storage tank 11, water can be added to the tank even when there is no demand for drinking water, by operating the filtration device 2. This eliminates the limitation of ice-making functionality based on the availability of pure water, increasing ice-making flexibility. Furthermore, the pure water flowing from the outlet absorbs heat at the heat exchange structure 12, thus becoming warm water to meet users' needs for warm drinking water, reducing the cost of heating drinking water and enhancing the user experience of the water purifier.

[0048] To further improve the heat exchange effect of the refrigerant, in one embodiment, the refrigerant heat exchange channel 1224 includes a refrigerant main channel extending spirally from top to bottom, and the water heat exchange channel 1211 includes a water main channel extending spirally from top to bottom. The refrigerant heat exchange channel 1224 and the water main channel are coaxially arranged. This can reduce the overall height of the heat exchange structure 12 while increasing the length of the refrigerant heat exchange channel 1224 and the water heat exchange channel 1211, thereby increasing the heat exchange area between the refrigerant and the water and improving the heat exchange and cooling effect of the water on the refrigerant.

[0049] In other embodiments, the refrigerant heat exchange channel 1224 and the water heat exchange channel 1211 may also be arranged in a serpentine bend or in other ways.

[0050] To further enhance the heat exchange effect, the heat exchange structure 12 includes a heat exchange sleeve, which comprises an inner heat exchange tube 121 and an outer heat exchange tube 122 spaced outside the inner heat exchange tube 121. The inner cavity of the inner heat exchange tube 121 forms a water heat exchange channel 1211, and a refrigerant heat exchange channel 1224 is formed between the inner heat exchange tube 121 and the outer heat exchange tube 122. This arrangement allows the refrigerant in the refrigerant heat exchange channel 1224 to exchange heat with the water in the water heat exchange channel 1211 through the wall of the inner heat exchange tube 121, while the refrigerant in the refrigerant heat exchange channel 1224 can exchange heat with the wall of the water storage tank 11 or the water in the water storage tank 11 through the wall of the outer heat exchange tube 122. Thus, both the inner and outer walls of the refrigerant heat exchange channel 1224 can be effectively cooled, improving the heat dissipation and cooling effect on the refrigerant.

[0051] Specifically, the heat exchange outer tube 122 includes a refrigerant main pipe section 1221 arranged in a spiral shape, and the heat exchange inner tube 121 includes a heat exchange main pipe section arranged in a spiral shape. The heat exchange main pipe section and the refrigerant main pipe section 1221 are coaxially arranged. The inner cavity of the refrigerant main pipe section 1221 forms a refrigerant main channel, and the inner cavity of the heat exchange main pipe section forms a water main channel.

[0052] In another embodiment, the multiple spiral segments of the refrigerant main pipe section 1221 and the multiple spiral segments of the heat exchange main pipe section can be alternately arranged in the axial direction of the heat exchange structure 12 to meet the coaxial heat exchange requirements; in another embodiment, the refrigerant main pipe section 1221 and the heat exchange main pipe section can also be integrally arranged with their outer walls in close contact with each other. In other embodiments, the heat exchange structure 12 can also be a plate heat exchanger, a microchannel heat exchanger, or other heat exchanger structures with dual refrigerant channels.

[0053] In one embodiment, the main structure of the heat exchange structure 12 is installed inside the water storage cavity 113, and both the inlet and outlet ends of the heat exchange structure 12 are sealed and extend out of the water storage tank 11. This allows water in the water storage cavity 113 to submerge at least a portion of the heat exchange structure 12, increasing the heat exchange area between the heat exchange structure 12 and the water in the water storage cavity 113, and improving the heat exchange effect between the water and the refrigerant in the water storage cavity 113. In other embodiments, the heat exchange structure 12 may be coiled around the outside of the water storage tank 11.

[0054] The upper end of the refrigerant main pipe 1221 is connected to a first connector pipe 1222, and the lower end of the refrigerant main pipe 1221 is connected to a second connector pipe 1223. The second connector pipe 1223 extends from bottom to top and its upper end is higher than that of the refrigerant main pipe 1221. Both the second connector pipe 1223 and the first connector pipe 1222 pass through the water storage tank 11 in a sealed manner. This arrangement raises the mating positions of both ends of the heat exchange structure 12 with the water storage tank 11, thereby preventing water in the water storage cavity 113 from seeping to the outside of the water storage tank 11 through these mating positions, and improving the safety and reliability of the heat exchange tank 1. The structure of the inner heat exchange pipe 121 is adapted to the structure of the outer heat exchange pipe 122.

[0055] In one embodiment, the second connector pipe section 1223 includes a bottom horizontal pipe section, a vertical pipe section, and a fixed horizontal pipe section connected in sequence by bending. The bottom horizontal pipe section is connected to the refrigerant main pipe section 1221, the vertical pipe section is located inside the refrigerant main pipe section 1221, and the top horizontal pipe section extends out of the water storage tank 11. This allows for an increase in the outer diameter of the heat exchange structure 12 without changing the cross-sectional area of ​​the water storage tank 11, and avoids interference between the second connector pipe section 1223 and the water storage tank 11.

[0056] In one embodiment, the cross-sectional shape of the water storage tank 11 is rectangular, and preferably square, to reduce the overall size of the water storage tank 11 while ensuring the liquid encapsulates the heat exchange structure 12. In other embodiments, the cross-sectional shape of the water storage tank 11 may also be circular.

[0057] To improve the ease of disassembly, assembly, and maintenance of the heat exchange structure 12, in one embodiment, the water storage tank 11 includes a tank body 111 with an open upper end and a removable cover 112 on the upper end of the tank body 111. The tank body 111 and the cover 112 enclose a water storage cavity 113, and the heat exchange structure 12 is installed inside the tank body 111. This allows for the inspection and maintenance of the structure inside the tank body 111 by removing the cover 112 relative to the tank body 111.

[0058] For example, the cover 112 has a positioning ring groove with an inner groove wall. The upper end of the box body 111 is inserted into the positioning ring groove and abuts against the bottom of the groove and the inner groove wall to achieve the installation and positioning of the two. The mating structure between the box body 111 and the cover 112 can adopt the structure in the prior art, which is not the focus of this utility model and will not be described in detail here.

[0059] In one embodiment, a water tank inlet is provided on the side wall of the housing 111. The water tank inlet is positioned higher than the refrigerant main pipe 1221, so that the water flowing from the water tank inlet into the water storage chamber 113 can flush the heat exchange structure 12, thereby increasing the contact area between the water and the heat exchange structure 12 and improving the heat exchange effect of the water in the water storage chamber 113 on the refrigerant. The water storage tank 11 has a water inlet pipe 114 protruding from the outer wall of the housing 111. The end of the water inlet pipe 114 forms the water tank inlet, which facilitates the cooperation of the water storage tank 11 with other tubular structures.

[0060] The bottom of the water storage tank 11 is provided with a water outlet to drain the water in the water storage chamber 113, thereby enabling cleaning or maintenance of the water storage tank 11. Simultaneously, placing the water outlet at the bottom of the water storage tank 11 facilitates the complete drainage of water from the water storage chamber 113, preventing water accumulation and the generation of odors or bacteria, thus improving the safety of the water exchange tank 1. The water storage tank 11 has an outlet pipe 115 surrounding the water outlet, with the end of the outlet pipe 115 forming the water tank outlet.

[0061] In one embodiment, the hot water tank 1 further includes a liquid level detection element 13, which is used to detect the liquid level in the water storage chamber 113 to avoid the water in the water storage chamber 113 being too high and causing the water in the water storage chamber 113 to backflow through the water tank inlet, and to avoid the problem of the heat exchange efficiency of the heat exchange structure 12 being reduced due to the water level in the water storage chamber 113 being too low.

[0062] The liquid level detection element 13 is installed on the top of the water storage tank 11, with its lower end inserted into the water storage cavity 113, to facilitate the installation of the liquid level detection element 13. The liquid level detection element 13 is located inside the heat exchange structure 12 to avoid interference between the liquid level detection element 13 and the heat exchange structure 12, thereby improving the rationality of the internal structural layout of the water storage tank 11. Specifically, the liquid level detection element 13 is installed on the tank cover 112.

[0063] For example, the cover 112 has a mounting hole, the mounting end of the liquid level detection element 13 has an external thread and a positioning boss with the same thread on the lower side. The mounting end passes through the mounting hole and the positioning boss abuts against the inner side wall of the cover 112. A locking nut 15 is screwed onto the mounting end, and a gasket is fitted on the mounting end. The locking nut 15 presses the gasket tightly between the locking nut 15 and the upper side wall of the cover 112.

[0064] It is worth noting that the liquid level detection principle, specific structure and installation structure of the liquid level detection component 13 on the water storage tank 11 can be set with reference to existing technology, and will not be described in detail here.

[0065] In one embodiment, the hot water tank 1 further includes a temperature detection element 14, the temperature measuring end of which extends into the interior of the water storage chamber 113 to detect the temperature of the water in the water storage chamber 113. The temperature detection element 14 is used to detect the temperature of the water in the water storage tank 11 to determine whether the water temperature in the water storage chamber 113 can meet the heat dissipation requirements of the refrigerant and ensure the heat dissipation effect of the refrigerant.

[0066] To improve the reliability of temperature detection by the temperature sensor 14, the temperature sensor 14 is installed at the bottom of the water storage tank 11 and located inside the heat exchange structure 12. This ensures that the temperature sensor 14 can detect the water temperature even when the water level in the water storage chamber 113 is low. At the same time, placing the temperature sensor 14 inside the heat exchange structure 12 avoids interference between the temperature sensor 14 and the heat exchange structure 12, thereby improving the installation reliability of the temperature sensor 14.

[0067] In one embodiment, the pure water outlet is connected to the water tank inlet via a first pure water pipe 101, thereby allowing the pure water produced by the filtration device 2 to be temporarily stored in the water storage tank 11. This reduces the user's waiting time for water and ensures the stability and reliability of the drinking water supply. Simultaneously, by storing pure water in the water storage tank 11, the water temperature can gradually decrease through heat dissipation when the user does not require warm water, better meeting the user's need for low-temperature pure water. In other embodiments, the wastewater outlet may also be connected to the water tank inlet.

[0068] The water tank outlet is connected to a water outlet pipe 103, which is used to connect to the drinking water supply. To ensure that the water in the water storage tank 11 flows smoothly out through the water outlet pipe 103, in one embodiment, a water pump 7 is installed on the water outlet pipe 103. The water pump 7 drives the water in the water storage tank 11 to flow out along the water outlet pipe 103, thereby ensuring the smoothness and stability of the water flow. The water pump 7 is preferably, but not limited to, a self-priming pump.

[0069] To further enhance the flexibility of the water purifier, in one embodiment, the water purifier also includes a heating element 8, which heats the water flowing out of the pure water outlet so that the water flowing out of the outlet pipe 103 can be hot water with a certain temperature to meet the user's need for hot water.

[0070] In one embodiment, the heating element 8 is connected in series on the water outlet pipe 103 to reduce the ease of installation of the heating element 8, and at the same time to avoid the heat generated by the heating element 8 affecting the heat dissipation of the refrigerant at the heat exchange structure 12, so that ice making and heating can be carried out simultaneously, improving the user experience of the water purifier. The heating element 8 can be, but is not limited to, a fast-heating element, an electric water tank, etc. In another embodiment, the heating element 8 can be located inside or outside the water storage tank 11 to heat the water in the water storage tank 11; in yet another embodiment, the heating element 8 can be a heating wire or heating film coiled around the water outlet pipe 103.

[0071] A water vapor separator 9 is also installed on the water outlet pipe 103. The water vapor separator 9 is located downstream of the heating element 8 to prevent hot steam from flowing out from the drinking water end and causing scalding to the user. Furthermore, the heating element 8 is located downstream of the water pump 7 to ensure that the water flowing to the heating element 8 has a relatively stable pressure and flow rate, and to avoid the high temperature of the water affecting the operation and service life of the water pump 7, thereby improving the reliability of the water pump 7.

[0072] In one embodiment, a flow detection device 206 is provided on the water outlet pipe 103. The flow detection device 206 is located between the water pump 7 and the heating element 8. The flow detection device 206 is used to detect the water flow rate in the water outlet pipe 103, thereby determining the power required by the heating element 8 to heat the water to the target temperature.

[0073] In one embodiment, a water outlet control valve 204 is provided on the water outlet pipe 103. The water outlet control valve 204 is used to control the opening and closing of the water outlet pipe 103, thereby preventing water from overflowing from the water storage tank 11 and causing turbulent water flow at the drinking end, thus improving the user experience of the water purification equipment. The water outlet control valve 204 is located between the flow detection element and the water pump 7.

[0074] A pure water control valve 201 is installed on the first pure water pipe 101, which is used to control the opening and closing of the first pure water pipe 101. Thus, when there is no water demand at the drinking water end, the pure water control valve 201 can be closed, so that the water in the filter device 2 can flow out from the wastewater outlet to meet the heat dissipation requirements of the refrigerant.

[0075] The wastewater outlet is connected to the water heat exchange channel 1211 through the wastewater pipe 104. A wastewater control valve 203 is installed on the wastewater pipe 104 to control the opening and closing of the wastewater pipe 104.

[0076] In one embodiment, the outlet end of the water heat exchange channel 1211 is connected to the raw water inlet of the filter device 2 via a return pipe 105, so that the return pipe 105, the filter device 2, and the water heat exchange channel 1211 are sequentially connected to form a water circulation loop. This allows wastewater generated during pure water preparation to exchange heat through the water heat exchange channel 1211 and then return to the filter device 2 for further filtration, thus preventing water waste. Especially after the first control valve is closed, the large volume of water flowing out of the filter device 2 can be returned to the filter device 2 after heat exchange, effectively avoiding waste caused by direct water discharge. In other embodiments, the outlet end of the water heat exchange channel 1211 can also be connected to the drain pipe in the user's home via a pipeline, meaning the wastewater discharged from the filter device 2 is directly discharged.

[0077] Specifically, the raw water inlet is connected to a raw water inlet pipe, and the outlet of the return pipe 105 is connected to the raw water inlet pipe. The water purification module also includes a booster pump 20 installed on the raw water inlet pipe to drive water flow to the raw water inlet of the filter device 2, thereby ensuring that the filter device 2 has sufficient water flow impact pressure, and thus ensuring smooth filtration. An inlet control valve 205 is also installed on the raw water inlet pipe to control the opening and closing of the raw water inlet pipe. The inlet control valve 205 is located upstream of the booster pump 20.

[0078] In one embodiment, the water purification module further includes a raw water tank 40, the outlet of which is connected to the inlet of the raw water inlet pipe, and the outlet of the return pipe 105 is connected to the inlet of the raw water tank 40. This allows the raw water tank 40 to store raw water, which facilitates the mixing of water introduced into the raw water tank 40 through the return pipe 105 and the raw water supply circuit, thereby effectively diluting the wastewater.

[0079] The filter device 2 is preferably a filter device 2 with an RO filter element, which can effectively ensure the filtration effect. However, it is understood that any existing filter device 2 that can achieve filtration and whose filtered water is directly drinkable can be used in this embodiment. This embodiment does not limit the specific structure and principle of the filter device 2.

[0080] To prevent large particles of impurities in the water from entering the filter device 2, in one embodiment, the drinking water purification device further includes a pre-filter 30. The pre-filter 30 is connected in series between the inlet control valve 205 and the booster pump 20 to perform coarse filtration on the raw water, reducing large particles of impurities in the water flowing to the booster pump 20, preventing clogging of the filter element in the filter device 2, improving filtration efficiency, and reducing the cleaning frequency of the filter device 2. The specific structure of the pre-filter 30 can be set with reference to existing technology, which is not the focus of this embodiment and will not be described in detail here.

[0081] In one embodiment, the water purification device includes an ice-making chamber 10. A second pure water pipe 102 is connected to a pure water outlet and communicates with the ice-making chamber 10 to supply water to it. An evaporator 5 is disposed inside the ice-making chamber 10 to make ice from the water within the chamber. This arrangement enables the water purification device to have cold water storage or ice-making functions, improving the user experience and facilitating heat exchange between the water and the refrigerant in the evaporator 5.

[0082] An ice-making control valve 202 is installed on the second pure water pipe 102. The ice-making control valve 202 is used to control the opening and closing of the second pure water pipe 102, thereby preventing pure water produced by the filter device 2 from entering the ice-making chamber 10 when ice making is not required. In another embodiment, the drinking water purification device includes a three-way valve. The first port of the three-way valve is connected to the first pure water circuit, the second port of the three-way valve is connected to the second pure water pipe 102, and the third port of the three-way valve is connected to the pure water outlet. The three-way valve controls the third port to be connected to either the first or second port.

[0083] In other embodiments, the evaporator 5 may have a first channel and a second channel. The first channel is connected in series between the throttling device 4 and the inlet of the compressor 3, and the second channel is connected in series to the second pure water pipe 102. This allows pure water and refrigerant to exchange heat in the second channel and the first heat exchange channel respectively, achieving heating of the refrigerant and cooling of the pure water. In another embodiment, the second pure water pipe 102 may not be provided, and the user can make ice by placing pure water from the drinking water end of the first pure water circuit into the ice-making chamber 10. In yet another embodiment, the ice-making module can also make ice for other items or spaces.

[0084] It is worth noting that the structure of the ice-making chamber 10 can adopt the existing structure of the ice-making chamber 10, which is not the focus of this utility model and will not be described in detail here.

[0085] In one embodiment, the ice-making module includes a dryer 6, which is connected in series between the outlet of the evaporator 5 and the return port of the compressor 3, so that the refrigerant returning to the compressor 3 is always gaseous refrigerant, ensuring the reliable operation of the compressor 3. In other embodiments, a water-vapor separator 9 may also be provided between the return port of the compressor 3 and the outlet of the evaporator 5. The ice-making module includes a capillary tube, which is connected in series between the heat exchange structure 12 and the throttling device 4. The throttling device 4 may be, but is not limited to, other existing devices with throttling and cooling functions such as an electronic expansion valve.

[0086] Example 2

[0087] This embodiment provides a water purifier with a cooling function. The water purifier provided in this embodiment has a basically the same structure as that in Embodiment 1, with only some differences in settings. This embodiment will not repeat the same structure as that in Embodiment 1.

[0088] like Figure 5 As shown, in this embodiment, the pure water outlet is connected to the water tank inlet through the first pure water pipe 101, and the water tank outlet is connected to the outlet pipe 103. The drinking water purification device also includes a bypass pipe 106. The first end of the bypass pipe 106 is connected to the outlet pipe 103 and the second end is connected to the first pure water pipe 101, so that the bypass pipe 106, the first pure water pipe 101, the water tank 11 and the outlet pipe 103 are connected to form a heat exchange circulation loop. The heat exchange circulation loop can be selectively energized, and a water pump 7 is installed on the heat exchange circulation loop.

[0089] That is, the water purification device provided in this embodiment, by setting up a heat exchange circulation loop, can conduct the heat exchange circulation loop when the temperature of the water in the water storage tank 11 is greater than or equal to the preset temperature and there is no water demand at the drinking water end, so that the water flows in the heat exchange circulation loop to increase the heat dissipation efficiency of the water and reduce the temperature of the water in the water storage chamber 113, thereby better ensuring the cooling effect.

[0090] Furthermore, the water pump 7 is installed in the outlet pipe 103, so that the water pump 7 can drive the water flow in the heat exchange circulation loop, and at the same time, the water flow can flow to the drinking water end under the driving action of the water pump 7.

[0091] Furthermore, the outlet control valve 204 is a three-way valve. The first and second ports of the three-way valve are connected in series to the outlet pipe 103, and the third port is connected to the first end of the bypass pipe 106. The three-way valve controls the first port to selectively connect to either the second or the third port, thereby controlling the flow direction of water in the outlet pipe 103. In other embodiments, a bypass control valve can be separately installed on the bypass pipe 106 to control the conduction of the heat exchange circulation loop.

[0092] Other structures of the water purification equipment can be configured as described in the above embodiments, and will not be repeated here.

[0093] Example 3

[0094] This embodiment provides a water purification device, and the structure of the water purification device provided in this embodiment is basically the same as that in Embodiment 1, with only some differences in settings. This embodiment will not repeat the same content as in Embodiment 1.

[0095] like Figure 6 As shown, in this embodiment, the wastewater outlet is connected to the water tank inlet, and the outlet of the water heat exchange channel 1211 is connected to a pure water supply pipe 107, which is connected to the drinking water outlet. The water tank outlet is connected to an outlet pipe 103, which is connected to the raw water inlet of the filter device 2.

[0096] In this embodiment, the water discharged from the wastewater outlet of the filter device 2 enters the water storage tank 11 for temporary storage, thereby improving the heat dissipation effect on the heat exchange structure 12. At the same time, the water tank outlet is connected to the water storage tank 11, so that the stored wastewater can flow back to the filter device 2 for further filtration or heat exchange circulation, avoiding water waste while ensuring the cooling effect on the heat exchange structure 12.

[0097] In this embodiment, the water tank has two inlets, namely the first inlet and the second inlet. The wastewater outlet is connected to the first inlet, and the raw water supply pipe is connected to the second inlet. This allows the raw water supply pipe to supply water to the filter device 2 through the water storage tank 11, meeting the water supply needs of the filter device 2 while allowing cooler external water to enter the water storage chamber 113. This better removes heat from the water storage chamber 113, ensuring that the water in the water storage chamber 113 does not have high temperatures, and further improving the heat dissipation effect on the heat exchange structure 12. Specifically, the outlet end of the outlet pipe 103 is connected to the raw water inlet pipe.

[0098] In other embodiments, a raw water tank 40 can be installed at the inlet end of the raw water inlet pipe, and the outlet of the tank can be connected to the raw water tank 40. That is, the outlet end of the return pipe 105 is connected to the raw water tank 40, and the raw water supply pipe is connected to the raw water tank.

[0099] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A hot water exchange tank, characterized in that, The hot water exchange tank includes: The water storage tank (11) has a water storage cavity (113) and a water tank inlet communicating with the water storage cavity (113); The heat exchange structure (12) is installed in the water storage tank (11) and has a refrigerant heat exchange channel (1224) and a water heat exchange channel (1211). The refrigerant heat exchange channel (1224) is used to introduce refrigerant. One of the water heat exchange channel (1211) and the water tank inlet is used to introduce wastewater generated by the filter device (2), and the other is used to connect with the pure water outlet of the filter device (2). The refrigerant in the refrigerant heat exchange channel (1224) can exchange heat with the water in the water heat exchange channel (1211) and the water storage tank (11).

2. The hot water exchange tank according to claim 1, characterized in that, The main structure of the heat exchange structure (12) is located inside the water storage cavity (113), and the inlet and outlet ends of the heat exchange structure (12) are sealed and extend out of the water storage tank (11).

3. The hot water exchange tank according to claim 1 or 2, characterized in that, The refrigerant heat exchange channel (1224) includes a refrigerant main channel extending spirally from top to bottom, and the water heat exchange channel (1211) includes a water main channel extending spirally from top to bottom. The refrigerant main channel and the water main channel are coaxially arranged. And / or, the heat exchange structure (12) includes an inner heat exchange tube (121) and an outer heat exchange tube (122) sleeved outside the inner heat exchange tube (121), the inner cavity of the inner heat exchange tube (121) forms the water heat exchange channel (1211), and the refrigerant heat exchange channel (1224) is formed between the inner heat exchange tube (121) and the outer heat exchange tube (122).

4. The hot water exchange tank according to claim 3, characterized in that, The heat exchange outer tube (122) includes a refrigerant main pipe section (1221) spirally wound from top to bottom. The refrigerant main pipe section (1221) is located inside the water storage cavity (113) and the inner cavity forms the main refrigerant channel. The upper end of the refrigerant main pipe section (1221) is connected to a first connector pipe section (1222), and the lower end of the refrigerant main pipe section (1221) is connected to a second connector pipe section (1223). The second connector pipe section (1223) extends from bottom to top and its upper end is higher than that of the refrigerant main pipe section (1221). Both the first connector pipe section (1222) and the second connector pipe section (1223) are sealed and pass through the water storage tank (11).

5. The hot water exchange tank according to claim 4, characterized in that, The water tank inlet is higher than the refrigerant main pipe (1221).

6. The hot water exchange tank according to claim 1 or 2, characterized in that, The water storage tank (11) includes a box body (111) with an open top and a box cover (112) that can be detachably installed on the box body (111). The heat exchange structure (12) is detachably installed inside the box body (111). And / or, the bottom of the water storage tank (11) is provided with a water tank outlet, the water tank outlet is connected to a water outlet pipe (103), and the water tank outlet or the water outlet pipe (103) is selectively connected.

7. The hot water exchange tank according to claim 1 or 2, characterized in that, A liquid level detection device (13) is installed on the water storage tank (11), and the liquid level detection device (13) extends into the water storage cavity (113) to detect the liquid level in the water storage cavity (113); And / or, a temperature detection element (14) is installed on the water storage tank (11), and the temperature measuring end of the temperature detection element (14) extends into the water storage cavity (113) to detect the water temperature in the water storage cavity (113).

8. A drinking water purification device, comprising a filtration device (2), said filtration device (2) having a pure water outlet and a wastewater outlet, characterized in that, The water purification equipment further includes a compressor (3), a throttling device (4), an evaporator (5), and a hot water tank as described in any one of claims 1-7. The compressor (3), the refrigerant heat exchange channel (1224), the throttling device (4), and the evaporator (5) are sequentially circulated and connected along the refrigerant flow direction. One of the pure water outlet and the wastewater outlet is connected to the water heat exchange channel (1211), and the other of the pure water outlet and the wastewater outlet is connected to the water storage chamber (113).

9. The water purification device according to claim 8, characterized in that, The pure water outlet is connected to the water tank inlet through the first pure water pipe (101). The water storage tank (11) is provided with a water tank outlet. The water tank outlet is provided with an outlet pipe (103). A bypass pipe (106) is connected between the outlet pipe (103) and the first pure water pipe (101) so that the bypass pipe (106), the first pure water pipe (101), the water storage tank (11) and the outlet pipe (103) are connected end to end in sequence to form a heat exchange circulation loop. A water pump (7) is provided on the heat exchange circulation loop. And / or, the water purification equipment further includes a raw water tank (40), which is connected to the raw water inlet of the filter device (2), the wastewater outlet is connected to the inlet end of the water heat exchange channel (1211), and the outlet end of the water heat exchange channel (1211) is connected to the raw water tank (40).

10. The water purification device according to claim 8, characterized in that, The water purification equipment also includes a raw water tank (40), which is connected to the raw water inlet of the filter device (2), the wastewater outlet is connected to the water tank inlet, and the water storage tank (11) is provided with a water tank outlet, which is connected to the raw water tank (40).

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