Water purification system

Abstract

The utility model relates to a water purification system, which comprises a filter component, a water inlet, a water outlet, a water outlet, a water outlet, a water outlet, a water outlet and a water outlet, and is characterized in that the filter component is provided with a water inlet and a filtered water outlet; the first water storage device is used for outputting normal-temperature water, and an inlet of the first water storage device is connected with a filtered water outlet of the filtering assembly; the heat exchange device is used for conducting heat exchange on water in the first water storage device, the heat exchange device is arranged on the first water storage device, and a filtered water outlet of the filtering assembly is connected with an inlet of the heat exchange device; the second water storage device is used for outputting hot water; and an inlet of the second water storage device is connected with an outlet of the heat exchange device. Water flowing through the heat exchange device exchanges heat with water in the first water storage device, so that the water in the first water storage device is cooled to the water temperature suitable for direct drinking, and the normal-temperature water drinking experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a water purification system. Background Art

[0002] Existing water purification systems (such as commercial water purifiers) mostly use the hot water in the hot tank to flow back into the warm water tank to sterilize the warm water outlet pipe. Therefore, in order to achieve the reflux sterilization of the hot water in the hot tank by gravity reflux, the hot tank and the warm water tank are usually placed side by side, which will cause the heat of the water in the hot tank to be transferred to the warm water tank by thermal radiation. In addition, due to the reflux of hot water in the hot tank to the warm water tank, the temperature of the normal temperature water in the warm water tank will be higher (over 40°C), causing the temperature of the normal temperature water in the warm water tank to exceed the water temperature range suitable for direct drinking by users (such as 35°C-37°C), giving users a poor drinking experience.

[0003] With regard to the problem in the related art that the heat of the water in the hot tank is transferred to the warm water tank by thermal radiation, resulting in a higher water temperature of the normal temperature water in the warm water tank, no effective solution has been given so far.

[0004] Therefore, the inventor, relying on his many years of experience and practice in related industries, proposes a water purification system to overcome the defects of the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a water purification system, in which a heat exchange device is arranged on a warm water tank. Water flowing through the heat exchange device can exchange heat with normal temperature water in the warm water tank, so that the temperature of the normal temperature water in the warm water tank can be reduced to a water temperature range suitable for users to drink directly, avoiding a poor drinking experience for users due to the high water temperature in the warm water tank.

[0006] The purpose of the utility model can be achieved by adopting the following scheme:

[0007] The utility model provides a water purification system, which comprises:

[0008] A filter assembly, wherein the filter assembly has a water inlet and a filtered water outlet, and the water inlet of the filter assembly is connected to a water source;

[0009] A first water storage device for outputting water at room temperature, wherein the inlet of the first water storage device is connected to the filtered water outlet of the filter assembly;

[0010] A heat exchange device for exchanging heat with water in the first water storage device, wherein the heat exchange device is disposed on the first water storage device, and the filtered water outlet of the filter assembly is connected to the inlet of the heat exchange device;

[0011] A second water storage device is used to output hot water, wherein the inlet of the second water storage device is connected to the outlet of the heat exchange device.

[0012] In a preferred embodiment of the present invention, the heat exchange device is disposed in the inner cavity of the first water storage device, or the heat exchange device is attached to the outer wall of the first water storage device.

[0013] In a preferred embodiment of the present invention, the heat exchange device includes a heat exchange coil.

[0014] In a preferred embodiment of the present invention, the water purification system is in a first state, and the filter assembly, the heat exchange device and the second water storage device are connected in sequence so that the water filtered by the filter assembly passes through the heat exchange device and enters the inner cavity of the second water storage device.

[0015] In a preferred embodiment of the present invention, the water purification system includes a drainage pipeline, and the inlet of the drainage pipeline is connected to the outlet of the heat exchange device.

[0016] In a preferred embodiment of the present invention, the water purification system is in the second state, and the filter assembly, the heat exchange device and the drainage pipeline are connected in sequence so that the water filtered by the filter assembly passes through the heat exchange device and is discharged from the drainage pipeline.

[0017] In a preferred embodiment of the present invention, a first valve member is provided on the drainage pipeline.

[0018] In a preferred embodiment of the present invention, the first water storage device and the second water storage device are arranged side by side, and the first water storage device and the second water storage device are close to each other.

[0019] In a preferred embodiment of the present invention, the first water storage device includes a warm water tank, and / or the second water storage device includes a hot tank with a heating element disposed in the inner cavity.

[0020] In a preferred embodiment of the present utility model, the water purification system has a water inlet and a water outlet, the water inlet of the filter component is connected to the water source through the water inlet, the outlet of the first water storage device is connected to the water outlet through a first water outlet pipe, and the outlet of the second water storage device is connected to the water outlet through a second water outlet pipe.

[0021] In a preferred embodiment of the present utility model, the outlet of the second water storage device is connected to the water outlet end through a third water outlet pipeline, and the third water outlet pipeline is connected to the first water outlet pipeline through the water outlet end;

[0022] When the water purification system is in the third state, the second water storage device, the third water outlet pipe, the water outlet end, the first water outlet pipe and the first water storage device are connected in sequence, so that the hot water in the second water storage device flows through the third water outlet pipe, the water outlet end, the first water outlet pipe and the outlet of the first water storage device in sequence and then enters the inner cavity of the first water storage device.

[0023] In a preferred embodiment of the present invention, a second valve member is provided on the third water outlet pipeline.

[0024] In a preferred embodiment of the present invention, the inlet of the second water storage device is connected to the outlet of the heat exchange device via a water supply pipeline, and a third valve member is provided on the water supply pipeline.

[0025] In a preferred embodiment of the present invention, the filtered water outlet of the filter assembly is connected to a first water supply pipeline, the first water supply pipeline is respectively connected to a second water supply pipeline and a third water supply pipeline, the second water supply pipeline and the third water supply pipeline are respectively connected to an inlet of the first water storage device and an inlet of the heat exchange device, and a fourth valve is provided on the second water supply pipeline.

[0026] In a preferred embodiment of the present invention, the filter assembly comprises a pre-filter element, a booster pump, a reverse osmosis filter element and a post-filter element connected in sequence, the inlet of the pre-filter element is connected to the water inlet end, and the outlet of the post-filter element is respectively connected to the inlet of the first water storage device and the inlet of the heat exchange device;

[0027] The reverse osmosis filter element has a wastewater outlet, and the wastewater outlet is connected to a wastewater pipeline.

[0028] As described above, the characteristics and advantages of the water purification system in the utility model are: a heat exchange device is arranged on the first water storage device for outputting normal temperature water, and the filtered water outlet of the filter component is connected to the inlet of the first water storage device and the inlet of the heat exchange device respectively. The water filtered by the filter component can enter the inner cavity of the first water storage device and flow through the heat exchange device. In the process of flowing through the heat exchange device, the water can exchange heat with the normal temperature water in the first water storage device, so as to achieve the purpose of cooling the normal temperature water in the first water storage device, so that the normal temperature water in the first water storage device can be cooled to a water temperature range suitable for direct drinking, thereby avoiding the poor normal temperature water drinking experience for users due to the high water temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0030] Figure 1 : It is a structural schematic diagram of the water purification system of the utility model;

[0031] Figure 2 : is a schematic diagram of water flow direction of the utility model water purification system in the first state;

[0032] Figure 3 : It is a schematic diagram of the water flow direction of the water purification system of the utility model in the second state;

[0033] Figure 4 : It is a schematic diagram of the water flow direction of the water purification system of the utility model in the third state;

[0034] Figure 5 : It is a schematic diagram of the positional relationship between the first water storage device and the second water storage device in the water purification system of the utility model;

[0035] Figure 6 : This is one of the structural schematic diagrams of the heat exchange device in the water purification system of the utility model;

[0036] Figure 7 : This is the second structural diagram of the heat exchange device in the water purification system of the utility model.

[0037] The accompanying drawings in the present utility model are as follows:

[0038] 1. Filter assembly; 101. Water inlet;

[0039] 102. Filtered water outlet; 103. Pre-filter element;

[0040] 104. Booster pump; 105. Reverse osmosis filter element;

[0041] 106. Post filter element; 2. First water storage device;

[0042] 3. Second water storage device; 301. Heating element;

[0043] 4. Heat exchange device; 401. Heat exchange pipe section;

[0044] 5. Water source; 6. Drainage pipeline;

[0045] 7. First valve member; 8. Water outlet;

[0046] 9. The first water outlet pipeline; 10. The second water outlet pipeline;

[0047] 11. The third water outlet pipeline; 12. The second valve member;

[0048] 13. Water supply pipeline; 14. The third valve;

[0049] 15. The first water supply pipeline; 16. The second water supply pipeline;

[0050] 17. The third water supply pipeline; 18. The fourth valve;

[0051] 19. Water quality sensor; 20. One-way valve;

[0052] 21. Connecting pipeline; 22. First emptying pipeline;

[0053] 23. Second drain pipe; 24. Wastewater pipe. DETAILED DESCRIPTION

[0054] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0055] like Figure 1 As shown, the utility model provides a water purification system, which includes a filter component 1, a first water storage device 2 for outputting water at room temperature, a heat exchange device 4 for exchanging heat with the water in the first water storage device 2, and a second water storage device 3 for outputting hot water. The filter component 1 has a water inlet 101 and a filtered water outlet 102, the water inlet 101 of the filter component 1 is connected to a water source 5; the inlet of the first water storage device 2 is connected to the filtered water outlet 102 of the filter component 1; the heat exchange device 4 is arranged on the first water storage device 2, the filtered water outlet 102 of the filter component 1 is connected to the inlet of the heat exchange device 4; the inlet of the second water storage device 3 is connected to the outlet of the heat exchange device 4.

[0056] In the utility model, a heat exchange device 4 is provided on the first water storage device 2 for outputting normal temperature water, and the filtered water outlet 102 of the filter assembly 1 is connected to the inlet of the first water storage device 2 and the inlet of the heat exchange device 4 respectively. The water filtered by the filter assembly 1 can enter the inner cavity of the first water storage device 2 and flow through the heat exchange device 4. The water entering the inner cavity of the first water storage device 2 can be used as normal temperature water for users to drink, and the water flowing through the heat exchange device 4 can exchange heat with the normal temperature water in the first water storage device 2, so as to cool the normal temperature water (such as the water temperature exceeds 38°C) in the first water storage device 2 with a higher temperature after heat radiation from the second water storage device 3, so that the normal temperature water in the first water storage device 2 can be cooled to a water temperature range suitable for users to drink directly (such as controlling the water temperature in the first water storage device 2 to be 35°C-37°C), thereby avoiding giving users a poor normal temperature water drinking experience due to the high water temperature, and enabling users to obtain a good drinking experience.

[0057] In an optional embodiment of the present invention, Figure 1As shown, the heat exchange device 4 is arranged in the inner cavity of the first water storage device 2. When water flows through the heat exchange device 4, it can exchange heat with the water in the inner cavity of the first water storage device 2, thereby achieving the purpose of cooling the water in the inner cavity of the first water storage device 2. In another optional embodiment of the utility model, the heat exchange device 4 can also be attached to the outer wall of the first water storage device 2, and the heat of the water in the inner cavity of the first water storage device 2 is transferred to the wall surface of the first water storage device 2 by heat transfer, and then the water flowing through the heat exchange device 4 exchanges heat with the wall surface of the first water storage device 2, thereby achieving the purpose of cooling the water in the inner cavity of the first water storage device 2. Of course, the setting position of the heat exchange device 4 is not limited to the inner cavity of the first water storage device 2 and the outer wall of the first water storage device 2, and can also be set at other positions that can directly or indirectly exchange heat with the water in the inner cavity of the first water storage device 2, as long as the purpose of heat exchange with the water in the inner cavity of the first water storage device 2 can be achieved.

[0058] Further, the heat exchange device 4 may be, but is not limited to, a heat exchange coil. Figure 6 As shown, the heat exchange coil includes a plurality of heat exchange pipe segments 401 extending vertically, and the plurality of heat exchange pipe segments 401 are arranged at intervals in the horizontal direction, and two adjacent heat exchange pipe segments 401 are connected by a bend pipe. Since the heat exchange pipe segments 401 extend vertically, the volume of the heat exchange coil as a whole in the horizontal direction can be reduced, which facilitates the installation of the heat exchange coil in the inner cavity. In another optional embodiment of the utility model, as Figure 7 As shown, the heat exchange coil includes a plurality of heat exchange segments 401 extending in the horizontal direction, the plurality of heat exchange segments 401 are located in the same horizontal plane, and two adjacent heat exchange segments 401 are connected by an elbow. Since the plurality of heat exchange segments 401 extend in the horizontal direction, the mutual influence between different heat exchange segments 401 is small, and heat exchange can be performed better. Of course, the heat exchange device 4 can be the above-mentioned heat exchange coil, and the heat exchange device 4 can also be a built-in water storage device (such as a water tank that can be used to store water). The built-in water storage device has an inlet and an outlet. The water filtered by the filter assembly 1 can enter the built-in water storage device from the inlet of the built-in water storage device. After heat exchange with the water in the first water storage device 2, the water in the built-in water storage device can flow out from the outlet of the built-in water storage device.

[0059] In an optional embodiment of the present invention, Figure 2As shown, the water purification system has a first state for replenishing water for the second water storage device 3. When the water purification system is in the first state, the filter assembly 1, the heat exchange device 4 and the second water storage device 3 are sequentially connected, so that the water flowing out of the water source 5 flows into the heat exchange device 4 after being filtered by the filter assembly 1, exchanges heat with the water in the first water storage device 2 in the process of flowing through the heat exchange device 4, and then enters the inner cavity of the second water storage device 3 as replenishment water for the second water storage device 3. In this process, not only can the water in the first water storage device 2 be cooled down to achieve the output of normal temperature water suitable for direct drinking by the user from the first water storage device 2, but also, through heat exchange with the normal temperature water in the inner cavity of the first water storage device 2, the water temperature of the water flowing through the heat exchange device 4 is increased, and when it is then used as replenishment water and enters the second water storage device 3 for heating, the energy consumption of the second water storage device 3 can be reduced.

[0060] In an optional embodiment of the present invention, Figure 1 , Figure 3 As shown, the water purification system also includes a drainage pipeline 6, and the inlet of the drainage pipeline 6 is connected to the outlet of the heat exchange device 4. The water purification system also has a second state for flushing the interior of the filter assembly 1 and the heat exchange device 4. When the water purification system is in the second state, the filter assembly 1, the heat exchange device 4 and the drainage pipeline 6 are sequentially connected, so that the water flowing out of the water source 5 flows into the heat exchange device 4 after being filtered by the filter assembly 1, and exchanges heat with the normal temperature water in the first water storage device 2 during the process of flowing through the heat exchange device 4, and then is discharged from the drainage pipeline 6. In actual use, after the first water storage device 2 or the second water storage device 3 is replenished with water, some filter elements (such as reverse osmosis membranes) in the filter assembly 1 will undergo forward osmosis, resulting in an increase in the TDS value of pure water on the filtered water outlet side of the filter assembly 1 (i.e., the TDS of the RO membrane climbs). If it is not processed in time, water with a higher TDS value will enter the first water storage device 2 or the second water storage device 3 at the next replenishment, resulting in a higher TDS value of the output water for users to drink.

[0061] Further, such as Figure 1 As shown, a first valve 7 is provided on the drainage pipeline 6 to control the on-off of the drainage pipeline 6. When the water purification system is in the first state, the first valve 7 needs to be closed; when the water purification system is in the second state, the first valve 7 needs to be opened.

[0062] In the utility model, a temperature detection element can be set in the inner cavity of the first water storage device 2, and a liquid level detection element can be set in the inner cavity of the second water storage device 3. When the liquid level detection element detects that the liquid level in the inner cavity of the second water storage device 3 is lower than the preset minimum liquid level threshold, it is necessary to replenish water in the inner cavity of the second water storage device 3. The water purification system can enter the first state, and the water flowing through the heat exchange device 4 is heat exchanged with the water in the first water storage device 2 and then flows into the inner cavity of the second water storage device 3 as replenishment water. When the temperature detection element detects that the water temperature in the inner cavity of the first water storage device is higher than the preset maximum temperature threshold, but the liquid level in the inner cavity of the second water storage device 3 detected at this time indicates that the second water storage device 3 does not need to be replenished, the water purification system can enter the second state, and the water flowing through the heat exchange device 4 is heat exchanged with the water in the first water storage device 2 and then discharged from the drainage pipe 6, which not only achieves the purpose of cooling the water in the heat exchange device 4, but also can flush the filter element in the filter assembly 1, avoiding the situation where the pure water TDS value on the filtered water outlet side of the filter assembly 1 rises. Among them, the temperature detection element can be but not limited to a temperature probe, and the liquid level detection element can be but not limited to a liquid level probe.

[0063] In the present utility model, if Figure 5 As shown, the first water storage device 2 and the second water storage device 3 are arranged side by side, and the first water storage device 2 and the second water storage device 3 are close to each other. Due to heat radiation, the heat in the second water storage device 3 is transferred to the first water storage device 2, causing the temperature of the normal temperature water in the first water storage device 2 to rise. When arranging the positions of the first water storage device 2 and the second water storage device 3, it is necessary to ensure that there is a liquid level difference between the normal temperature water in the first water storage device 2 and the hot water in the second water storage device 3, so that the hot water in the second water storage device 3 can flow into the first water storage device 2 under the action of gravity reflux, so as to achieve reflux sterilization of hot water.

[0064] In an optional embodiment of the present invention, Figure 1 As shown, the first water storage device 2 includes a warm water tank, and / or the second water storage device 3 includes a hot pot with a heating element 301 disposed in the inner cavity. The heating element 301 may be, but is not limited to, a heating tube disposed in the hot pot.

[0065] In an optional embodiment of the present invention, Figure 1 As shown, the water purification system has a water inlet and a water outlet 8, the water inlet 101 of the filter assembly 1 is connected to the water source 5 through the water inlet, the outlet of the first water storage device 2 is connected to the water outlet 8 of the water purification system through the first water outlet pipeline 9, and the outlet of the second water storage device 3 is connected to the water outlet 8 of the water purification system through the second water outlet pipeline 10. The room temperature water in the first water storage device 2 can be output from the water outlet 8 after passing through the first water outlet pipeline 9, and the hot water in the second water storage device 3 can be output from the water outlet 8 after passing through the second water outlet pipeline 10.

[0066] In this embodiment, if Figure 1 As shown, the outlet of the second water storage device 3 is connected to the water outlet end 8 of the water purification system through the third water outlet pipeline 11, and a water pipe connecting the third water outlet pipeline 11 and the first water outlet pipeline 9 is provided at the water outlet end 8 of the water purification system, so that the third water outlet pipeline 11 can be connected to the first water outlet pipeline 9 through the water outlet end 8 of the water purification system. Figure 4 As shown, the water purification system also has a third state. When the water purification system is in the third state, the second water storage device 3, the third water outlet pipe 11, the water outlet end 8 of the water purification system, the first water outlet pipe 9 and the first water storage device 2 are connected in sequence, so that the hot water in the second water storage device 3 can flow through the third water outlet pipe 11, the water outlet end 8 of the water purification system, the first water outlet pipe 9 and the outlet of the first water storage device 2 in sequence and then enter the inner cavity of the first water storage device 2, thereby realizing the backflow of the hot water in the second water storage device 3, so as to achieve the purpose of sterilizing the water outlet end 8 of the water purification system, the first water outlet pipe 9 and the outlet of the first water storage device 2, thereby improving the water quality and ensuring safe drinking water.

[0067] Further, such as Figure 1 As shown, a second valve member 12 is provided on the third water outlet pipeline 11 to control the on-off state of the third water outlet pipeline 11. The second valve member 12 is turned on only when hot water in the second water storage device 3 needs to flow back for sterilization.

[0068] In an optional embodiment of the present invention, Figure 1 As shown, the inlet of the second water storage device 3 is connected to the outlet of the heat exchange device 4 through a water supply pipeline 13, and a third valve 14 is provided on the water supply pipeline 13. After the water in the heat exchange device 4 exchanges heat with the water in the first water storage device 2, it enters the inner cavity of the second water storage device 3 through the water supply pipeline 13 to replenish the second water storage device 3. The on-off state of the water supply pipeline 13 can be controlled by the third valve 14, so as to control whether to replenish water into the inner cavity of the second water storage device 3. Among them, the water supply pipeline 13 and the drainage pipeline 6 can be two independent pipelines respectively, and the water supply pipeline 13 and the drainage pipeline 6 can also have a portion that shares the same section of the pipeline, and the portion that shares the same section of the pipeline is connected to the outlet of the heat exchange device 4. By controlling the on-off state of the drainage pipeline 6 and the water supply pipeline 13, the purpose of discharging or replenishing water in the heat exchange device 4 is achieved.

[0069] In an optional embodiment of the present invention, Figure 1As shown, the filtered water outlet 102 of the filter assembly 1 is connected to one end of the first water supply pipeline 15, the other end of the first water supply pipeline 15 is respectively connected to one end of the second water supply pipeline 16 and one end of the third water supply pipeline 17, the other end of the second water supply pipeline 16 is connected to the inlet of the first water storage device 2, the other end of the third water supply pipeline 17 is connected to the inlet of the heat exchange device 4, and the second water supply pipeline 16 is provided with a fourth valve member 18. The water filtered by the filter assembly 1 can enter the inner cavity of the first water storage device 2 through the first water supply pipeline 15 and the second water supply pipeline 16 in sequence, so as to replenish the first water storage device 2; the water filtered by the filter assembly 1 can enter the heat exchange device 4 through the first water supply pipeline 15 and the third water supply pipeline 17 in sequence, so as to exchange heat with the higher temperature water in the first water storage device 2.

[0070] In an optional embodiment of the present invention, Figure 1 As shown, the water source 5 can be but is not limited to a tap. The water inlet 101 of the filter component 1 is connected to the tap. After being filtered by the filter component 1, the tap water enters the first water storage device 2 and the second water storage device 3 respectively to be supplied to users for drinking.

[0071] In an optional embodiment of the present invention, Figure 1 As shown, the filter assembly 1 includes a pre-filter element 103, a booster pump 104, a reverse osmosis filter element 105 and a post-filter element 106 connected in sequence. The inlet of the pre-filter element 103 is connected to the water inlet end of the water purification system, and the outlet of the post-filter element 106 is connected to the inlet of the first water storage device 2 through the first water supply pipeline 15 and the second water supply pipeline 16 in sequence. The outlet of the post-filter element 106 is also connected to the inlet of the heat exchange device 4 through the first water supply pipeline 15 and the third water supply pipeline 17 in sequence. The water flowing out of the water source 5 is filtered by the pre-filter element 103, the reverse osmosis filter element 105 and the post-filter element 106 in sequence, and then enters the inner cavity of the first water storage device 2 and / or the heat exchange device 4. Among them, the booster pump 104 can be used as a power source for the water purification system to provide power for the water to pass through the filter assembly 1 and enter the first water storage device 2 and the heat exchange device 4.

[0072] Further, the pre-filter element 103 may be, but is not limited to, one of polypropylene and activated carbon fiber or a mixture of both. That is, the pre-filter element 103 may be a polypropylene filter element, an activated carbon fiber filter element, or a mixed filter element of polypropylene and activated carbon fiber to filter out large particles of impurities in the water.

[0073] Furthermore, the reverse osmosis filter element 105 includes a water collecting pipe and a reverse osmosis membrane wound on the water collecting pipe. The water collecting pipe has flow holes for liquid to flow through. A post-filter element is also arranged inside the water collecting pipe. The post-filter element is a carbon rod. The reverse osmosis filter element has a wastewater outlet, which is connected to the wastewater pipeline.

[0074] Furthermore, the post-filter element 106 may be, but is not limited to, an activated carbon filter element.

[0075] Further, such as Figure 1 As shown, a water quality sensor 19 is provided on the first water supply pipeline 15, and the water quality after the filter assembly 1 is filtered is detected by the water quality sensor 19. In addition, a one-way valve 20 is also provided on the first water supply pipeline 15, which conducts one-way from the filter assembly 1 to the first water storage device 2 and the heat exchange device 4.

[0076] In an optional embodiment of the present invention, Figure 1 As shown, a connecting pipe 21 is arranged between the top of the first water storage device 2 and the top of the second water storage device 3. The connecting pipe 21 connects the inner cavity of the first water storage device 2 and the inner cavity of the second water storage device 3, and can be used to exhaust air from the second water storage device 3 to the first water storage device 2, and can serve as an overflow pipe between the first water storage device 2 and the second water storage device 3.

[0077] In an optional embodiment of the present invention, Figure 1 As shown, a first drain pipe 22 is connected to the bottom of the first water storage device 2, and a second drain pipe 23 is connected to the bottom of the second water storage device 3. The first drain pipe 22 and the second drain pipe 23 are used for draining the first water storage device 2 and the second water storage device 3 respectively.

[0078] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A water purification system, characterized in that: The water purification system comprises: A filter assembly, wherein the filter assembly has a water inlet and a filtered water outlet, and the water inlet of the filter assembly is connected to a water source; A first water storage device for outputting water at room temperature, wherein the inlet of the first water storage device is connected to the filtered water outlet of the filter assembly; A heat exchange device for exchanging heat with water in the first water storage device, wherein the heat exchange device is disposed on the first water storage device, and the filtered water outlet of the filter assembly is connected to the inlet of the heat exchange device; A second water storage device is used to output hot water, wherein the inlet of the second water storage device is connected to the outlet of the heat exchange device.

2. The water purification system according to claim 1, characterized in that: The heat exchange device is arranged in the inner cavity of the first water storage device, or the heat exchange device is attached to the outer wall of the first water storage device.

3. The water purification system according to claim 2, characterized in that: The heat exchange device comprises a heat exchange coil.

4. The water purification system according to any one of claims 1 to 3, characterized in that: When the water purification system is in a first state, the filter assembly, the heat exchange device and the second water storage device are sequentially connected so that water filtered by the filter assembly passes through the heat exchange device and enters the inner cavity of the second water storage device.

5. The water purification system according to any one of claims 1 to 3, characterized in that: The water purification system comprises a drainage pipeline, and the inlet of the drainage pipeline is connected to the outlet of the heat exchange device.

6. The water purification system according to claim 5, characterized in that: When the water purification system is in the second state, the filter assembly, the heat exchange device and the drainage pipeline are sequentially connected, so that the water filtered by the filter assembly passes through the heat exchange device and is discharged from the drainage pipeline.

7. The water purification system according to claim 5, characterized in that: The drainage pipeline is provided with a first valve component.

8. The water purification system according to any one of claims 1 to 3, characterized in that: The first water storage device and the second water storage device are arranged side by side, and the first water storage device is close to the second water storage device.

9. The water purification system according to claim 8, characterized in that: The first water storage device comprises a warm water tank, and / or the second water storage device comprises a hot tank having a heating element disposed in its inner cavity.

10. The water purification system according to any one of claims 1 to 3, characterized in that: The water purification system has a water inlet and a water outlet. The water inlet of the filter component is connected to the water source through the water inlet, the outlet of the first water storage device is connected to the water outlet through a first water outlet pipeline, and the outlet of the second water storage device is connected to the water outlet through a second water outlet pipeline.

11. The water purification system according to claim 10, characterized in that: The outlet of the second water storage device is connected to the water outlet end through a third water outlet pipeline, and the third water outlet pipeline is connected to the first water outlet pipeline through the water outlet end; When the water purification system is in the third state, the second water storage device, the third water outlet pipe, the water outlet end, the first water outlet pipe and the first water storage device are connected in sequence, so that the hot water in the second water storage device flows through the third water outlet pipe, the water outlet end, the first water outlet pipe and the outlet of the first water storage device in sequence and then enters the inner cavity of the first water storage device.

12. The water purification system according to claim 11, characterized in that: The third water outlet pipeline is provided with a second valve member.

13. The water purification system according to any one of claims 1 to 3, characterized in that: The inlet of the second water storage device is connected to the outlet of the heat exchange device through a water supply pipeline, and a third valve member is arranged on the water supply pipeline.

14. The water purification system according to any one of claims 1 to 3, characterized in that: The filtered water outlet of the filter assembly is connected to the first water supply pipeline, the first water supply pipeline is respectively connected to the second water supply pipeline and the third water supply pipeline, the second water supply pipeline and the third water supply pipeline are respectively connected to the inlet of the first water storage device and the inlet of the heat exchange device, and the second water supply pipeline is provided with a fourth valve.

15. The water purification system according to claim 10, characterized in that: The filter assembly comprises a pre-filter element, a booster pump, a reverse osmosis filter element and a post-filter element connected in sequence, the inlet of the pre-filter element is connected to the water inlet end, and the outlet of the post-filter element is respectively connected to the inlet of the first water storage device and the inlet of the heat exchange device; The reverse osmosis filter element has a wastewater outlet, and the wastewater outlet is connected to a wastewater pipeline.

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