Zero-cold-water waterway system and heat purification all-in-one machine

Abstract

The utility model provides a zero-cold-water waterway system and a heat purifying all-in-one machine, which comprises a filter unit, which comprises a booster pump and a first filter element which are sequentially arranged on a waterway along the water flow direction; the first switch valve is mounted on an upstream water path of the water inlet of the filtering unit; a water inlet of the heating unit is communicated with a water purification port of the first filter element through a first pipeline, and a water outlet of the heating unit is communicated with a hot water end through a second pipeline; the water inlet end of the zero cold water pipeline is communicated with the second pipeline, the water outlet end of the zero cold water pipeline is communicated with an upstream water path of the booster pump through a first three-way valve, and the first three-way valve is located on a water path between the first switch valve and the booster pump; and the second switch valve is mounted on the zero cold water pipeline. Power is provided through the booster pump, residual water in the hot water pipeline is discharged into waste water, and it is guaranteed that the temperature of hot water is not affected by cold water in the pipeline when the hot water is used next time.

Description

Technical Field

[0001] This utility model relates to a zero-cold-water water circuit system and an integrated water purification and heating machine. Background Technology

[0002] With economic development and improved living standards, consumers are paying increasing attention to healthy drinking water and have higher requirements for its use. Water purifiers, as water treatment devices that can deeply filter and purify water according to usage requirements, are gaining increasing recognition and favor among consumers. Currently, a type of integrated water purifier and heater has emerged on the market, allowing consumers to simultaneously access both ambient temperature purified water and hot water, gradually replacing older water purifiers with only a single purification function. However, when users want to get hot water, there is a section of cold water in the hot water pipe, causing the initially dispensed hot water to not reach the desired temperature. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a zero-cold-water water circuit system and a heat purifier integrated unit.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A zero-cold-water circuit system, comprising:

[0006] The filtration unit includes a booster pump and a first filter element installed sequentially along the water flow direction on the water path;

[0007] The first switching valve is installed on the upstream water line of the inlet of the filter unit;

[0008] A heating unit, wherein the water inlet of the heating unit is connected to the clean water outlet of the first filter element through a first pipe, and the water outlet of the heating unit is connected to the hot water end through a second pipe;

[0009] A zero-cold-water pipeline, wherein the inlet end of the zero-cold-water pipeline is connected to the second pipeline, and the outlet end of the zero-cold-water pipeline is connected to the upstream water line of the booster pump through a first three-way valve, wherein the first three-way valve is located on the water line between the first switch valve and the booster pump;

[0010] The second switching valve is installed in the zero-cold water pipeline.

[0011] In this design, the first filter element in the filtration unit filters and purifies tap water, while the booster pump pressurizes the water supply to maintain a certain pressure before the membrane of the first filter element, thus improving water production efficiency. The first on / off valve opens or closes the inlet of the filtration unit. The heating unit heats the purified water, allowing users to obtain the desired hot water at the hot water outlet. The second on / off valve opens or closes the zero-cold water pipeline.

[0012] During water production, the first switch valve and booster pump are opened, and tap water enters the first filter element. Purified water is obtained at the clean water inlet of the first filter element, and wastewater is obtained at the waste water inlet of the first filter element. The wastewater is discharged through the wastewater pipe, and the purified water flows into the heating unit through the first pipeline. After being heated by the heating unit, the user can obtain the hot water they need at the hot water end.

[0013] After the user finishes using hot water, the first switch valve is closed to cut off the tap water supply. The second switch valve and the booster pump are then opened. The booster pump provides power, allowing residual water in the heating unit and the first pipeline to flow into the first filter element through the zero-cold-water pipeline. The residual water circulates through the first filter element, the first pipeline, and the zero-cold-water pipeline. During each circulation, a portion of the residual water is discharged through the wastewater outlet of the first filter element. After multiple circulations, the residual water is completely drained through the wastewater outlet of the first filter element. The next time the user needs hot water, the purified water is directly heated in the heating unit. Since there is no residual water in the heating unit and pipeline, the user receives hot water at the desired temperature. The temperature of this hot water is not affected by the residual cold water in the heating unit and pipeline, achieving the zero-cold-water function and improving the user experience.

[0014] Preferably, the heating unit includes a flow meter and a heating element, both of which are installed in the passage between the first pipeline and the second pipeline, with the flow meter located upstream of the heating element.

[0015] In this design, the heating element is configured to heat up after being powered on, and the flow meter is used to monitor the flow rate into the heating element.

[0016] Preferably, the heating unit further includes a drive pump and a water valve assembly, both of which are installed in the passage between the first pipeline and the second pipeline. Both the drive pump and the water valve assembly are located upstream of the heating element. The water valve assembly includes a solenoid valve and a pressure reducing valve.

[0017] In this solution, the solenoid valve is used to open or close the passage between the first and second pipelines, the pressure reducing valve plays a role in stabilizing the pressure, and the drive pump is used to provide driving force to provide a stable water flow to the heating element so that the user can obtain sufficient hot water at the hot water end.

[0018] Preferably, the zero-cold-water circuit system further includes a return pipe, the inlet of which is connected to the first pipe via a second three-way valve, the outlet of which is connected to the outlet of the zero-cold-water pipe, and a third switching valve is installed on the return pipe.

[0019] In this solution, the "instant filtration, instant heating, and instant dispensing" effect can be achieved without using a water storage device. Normally, when hot water is used, the system's water production capacity exceeds the required hot water volume. In this case, the third switch valve needs to be opened to return a portion of the purified water from the first pipeline to the booster pump, thereby reducing the pressure before the membrane of the first filter element and increasing its lifespan.

[0020] Preferably, the zero-cold-water system further includes a mixing tank, which is installed at the outlet end of the zero-cold-water pipeline.

[0021] In this solution, when the first switch valve is closed and the second switch valve and booster pump are opened, allowing residual water to return through the zero-cold-water pipeline, the booster pump is used as power to mix the hot water (heating unit) and cold water (in the pipeline) pumped by the booster pump in the mixing tank, lowering the water temperature and ensuring that the mixed water does not damage the filter membrane of the first filter element when passing through it. Preferably, the return pipeline is opened simultaneously with the zero-cold-water pipeline. When the booster pump is working, it draws water from both the pipeline containing the heating unit and the return pipeline, and then mixes them in the mixing tank, thereby lowering the temperature of the mixed water and protecting the filter membrane of the first filter element from being scalded.

[0022] Preferably, the zero-cold-water circuit system further includes a first check valve, which is installed in the return pipeline and the inlet of the check valve faces the first pipeline.

[0023] In this design, the first check valve allows the return line to flow unidirectionally from the end near the first line to the end near the booster pump, preventing water from flowing backward in the return line.

[0024] Preferably, the heating unit further includes a temperature sensor, which is installed in the second pipeline and close to the water outlet of the heating unit;

[0025] And / or, the zero-cold-water circuit system further includes a second check valve, which is installed in the zero-cold-water pipeline and has its inlet facing the outlet of the heating unit.

[0026] In this solution, a temperature sensor is used to detect the water temperature at the outlet of the heating unit. Typically, the temperature sensor is electrically connected to the controller, which adjusts the power of the heating unit and the water valve assembly based on the outlet water temperature to obtain hot water at the user's desired temperature.

[0027] The second check valve allows the zero-cooling water line to flow unidirectionally from the end closest to the second line to the end closest to the booster pump, preventing water from flowing backward in the zero-cooling water line.

[0028] Preferably, the zero-cold-water circuit system further includes a normal-temperature water circuit, one end of which is connected to the first pipeline via a third three-way valve, and the other end of which is connected to a normal-temperature water end. A fourth switch valve is installed on the normal-temperature water circuit.

[0029] In this solution, the fourth switch valve can be opened during water production, allowing users at the ambient temperature water end to obtain ambient temperature water.

[0030] Preferably, the filtration unit further includes a second filter element, which includes a pre-filtration section and a post-filtration section. The pre-filtration section is installed in the water line between the first switch valve and the booster pump, and the post-filtration section is installed in the passage between the clean water inlet of the first filter element and the first pipeline.

[0031] In this design, the first filter element is typically called a post-filter or nanofiltration membrane filter element, and the second filter element is called a pre-filter. To save installation space, the pre-filtration and post-filtration sections are integrated together and collectively referred to as the pre-filter. The pre-filtration section performs coarse filtration, while the post-filter is used for fine filtration, and the post-filtration section is used to improve the taste of the purified water.

[0032] A combined air purifier and heat pump unit, the air purifier and heat pump unit further comprising the zero-cold water circuit system as described above.

[0033] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0034] The significant advantages of this invention are as follows: During water production, the first switch valve and booster pump are opened, allowing tap water to enter the first filter element. Purified water is obtained at the clean water inlet of the first filter element, while wastewater is simultaneously obtained at the waste water inlet. The wastewater is discharged through the wastewater pipe, while the purified water flows into the heating unit through the first pipeline. After heating in the heating unit, the user can obtain the desired hot water at the hot water outlet. Without using a water storage device, the effect of "instant filtration, instant heating, and instant water dispensing" can be achieved.

[0035] After the user finishes using hot water, the first switch valve is closed to cut off the tap water supply. The second switch valve and the booster pump are then opened. The booster pump provides power, allowing residual water in the heating unit and the first pipeline to flow into the first filter element through the zero-cold-water pipeline. The residual water circulates through the first filter element, the first pipeline, and the zero-cold-water pipeline. During each circulation, a portion of the residual water is discharged through the wastewater outlet of the first filter element. After multiple circulations, the residual water is completely drained through the wastewater outlet of the first filter element. The next time the user needs hot water, the purified water is directly heated in the heating unit. Since there is no residual water in the heating unit and pipeline, the user receives hot water at the desired temperature. The temperature of this hot water is not affected by the residual cold water in the heating unit and pipeline, achieving the zero-cold-water function and improving the user experience. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the zero-cold-water system according to a preferred embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] Filter unit 1

[0039] Booster pump 11

[0040] First filter element 12

[0041] Water Purifier 121

[0042] Wastewater outlet 122

[0043] Second filter element 13

[0044] Pre-filter section 131

[0045] Post-filter section 132

[0046] First switching valve 2

[0047] Heating unit 3

[0048] Flow meter 31

[0049] Water valve assembly 32

[0050] Heating element 33

[0051] Drive pump 34

[0052] Temperature sensor 35

[0053] Zero cold water piping 4

[0054] Second switching valve 41

[0055] Mixing tank 42

[0056] Second check valve 43

[0057] First three-way valve 44

[0058] First Pipeline 5

[0059] Second pipeline 6

[0060] Return line 7

[0061] Third switching valve 71

[0062] First check valve 72

[0063] Second three-way valve 73

[0064] Normal temperature waterway 8

[0065] Third three-way valve 81

[0066] Fourth switching valve 82

[0067] 100 tap water

[0068] Hot water end 200

[0069] Normal temperature water end 300 Detailed Implementation

[0070] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0071] like Figure 1 As shown, this embodiment discloses a zero-cold-water system, which includes a filtration unit 1, a first switching valve 2, a heating unit 3, a zero-cold-water pipeline 4, and a second switching valve 41. The filtration unit 1 includes a booster pump 11 and a first filter element 12, sequentially installed along the water flow direction. The first filter element 12 in the filtration unit 1 is used to filter and purify tap water, and the booster pump 11 is used to pressurize the water flow, maintaining a certain pressure in front of the membrane of the first filter element 12 to improve water production efficiency. The first switching valve 2 is installed upstream of the inlet of the filtration unit 1 and is used to open or close the inlet of the filtration unit 1. The inlet of the filtration unit 1 is connected to the tap water terminal 100 via a pipeline. The inlet of the heating unit 3 is connected to the purified water outlet 121 of the first filter element 12 via a first pipeline 5, and the outlet of the heating unit 3 is connected to the hot water terminal 200 via a second pipeline 6. Heating unit 3 is used to heat purified water, allowing users to obtain the required hot water at the hot water end 200. The inlet of the zero cold water pipeline 4 is connected to the second pipeline 6, and the outlet of the zero cold water pipeline 4 is connected to the upstream water line of the booster pump 11 through the first three-way valve 44. The first three-way valve 44 is located on the water line between the first switch valve 2 and the booster pump 11. The zero cold water pipeline 4 is used to allow the water in the heating unit 3 and the pipeline to flow back to the water line before the booster pump 11. The second switch valve 41 is installed on the zero cold water pipeline 4 and is used to open or close the zero cold water pipeline 4.

[0072] like Figure 1 As shown, during water production, the first switch valve 2 and booster pump 11 are opened, allowing tap water to enter the first filter element 12. Purified water is obtained at the clean water inlet 121 of the first filter element 12, while wastewater is obtained at the wastewater inlet 122 of the first filter element 12. The wastewater is discharged through the wastewater pipe, and the purified water flows into the heating unit 3 through the first pipe 5. After being heated by the heating unit 3, the user can obtain the desired hot water at the hot water end 200. This water system achieves the effect of "instant filtration, instant heating, and instant water dispensing" without using a water storage device.

[0073] After the user finishes using hot water, the first switch valve 2 is closed to cut off the tap water supply. The second switch valve 41 and the booster pump 11 are then opened. The booster pump 11 provides power, allowing residual water in the heating unit 3 and the first pipe 5 to flow into the first filter element 12 through the zero-cold-water pipe 4. The residual water circulates through the first filter element 12, the first pipe 5, and the zero-cold-water pipe 4. During each circulation, a portion of the residual water is discharged through the wastewater outlet 122 of the first filter element 12. After multiple circulations, the residual water is completely drained through the wastewater outlet 122 of the first filter element 12. The next time the user uses hot water, the purified water is directly heated in the heating unit 3. Since there is no residual water in the heating unit 3 and the pipes, the user can immediately obtain the hot water at the desired temperature at the hot water end 200. The temperature of this hot water is not affected by the residual cold water in the heating unit 3 and the pipes, achieving a zero-cold-water function and improving the user experience.

[0074] To adjust the wastewater ratio, a wastewater ratio solenoid valve is installed on the pipeline connected to wastewater outlet 122.

[0075] like Figure 1 As shown, the heating unit 3 includes a flow meter 31 and a heating element 33. Both the flow meter 31 and the heating element 33 are installed in the passage between the first pipeline 5 and the second pipeline 6, with the flow meter 31 located upstream of the heating element 33. The heating element 33 is configured to heat up after being energized, and the flow meter 31 is used to monitor the flow rate into the heating element 33.

[0076] The heating unit 3 also includes a drive pump 34 and a water valve assembly 32. Both the drive pump 34 and the water valve assembly 32 are installed in the passage between the first pipe 5 and the second pipe 6, located upstream of the heating element 33. The water valve assembly 32 includes a solenoid valve and a pressure reducing valve. The solenoid valve is used to open or close the passage between the first pipe 5 and the second pipe 6. The pressure reducing valve acts as a pressure regulator. The drive pump 34 provides driving force to provide a stable inflow of water to the heating element 33, ensuring that the user obtains sufficient hot water at the hot water end 200. The flow meter 31, the water valve assembly 32, the heating element 33, and the drive pump 34 are all electrically connected to a controller. The controller dynamically adjusts the size of the drive pump 34 and the water valve assembly 32 based on the flow rate detected by the flow meter 31, matching the flow rate into the heating element 33 with the power of the heating element 33, thereby obtaining hot water at the required temperature at the hot water end 200. The control principle of the controller is existing technology and will not be described in detail here.

[0077] like Figure 1As shown, the zero-cold-water system also includes a return pipe 7. The inlet of the return pipe 7 is connected to the first pipe 5 via a second three-way valve 73, and the outlet of the return pipe 7 is connected to the outlet of the zero-cold-water pipe 4. A third switch valve 71 is installed on the return pipe 7. Normally, when hot water is used, the system's water production capacity exceeds the required hot water volume. In this case, the third switch valve 71 needs to be opened to return a portion of the purified water from the first pipe 5 to the booster pump 11, thereby reducing the pressure before the membrane of the first filter element 12, increasing the service life of the first filter element 12, and the purified water can also replace the concentrated water in the first filter element 12, solving the problem of excessively high mineral content in the first cup of water.

[0078] like Figure 1 As shown, the zero-cold-water system also includes a mixing tank 42, which is installed at the outlet of the zero-cold-water pipeline 4. When the first switch valve 2 is closed and the second switch valve 41 and booster pump 11 are opened, allowing residual water to flow back through the zero-cold-water pipeline 4, the booster pump 11, as the power source, pumps hot water (heating unit 3) and cold water (in the pipeline) into the mixing tank 42, lowering the water temperature and ensuring that the mixed water does not damage the filter membrane of the first filter element 12 when passing through it. Preferably, the return pipeline 7 is opened simultaneously with the zero-cold-water pipeline 4. When the booster pump 11 is working, it draws water from both the pipeline containing the heating unit 3 and the return pipeline 7, mixing them in the mixing tank 42 to lower the temperature of the mixed water and protect the filter membrane of the first filter element 12 from being scalded.

[0079] In order to protect the filter membrane of the first filter element 12, after draining the residual water in the pipeline where the heating element 33 is located, the first switch valve 2, the drive pump 34 and the third switch valve 71 can be opened, and the solenoid valve in the water valve assembly 32 can be closed. At this time, room temperature water will fill the drained water of the first filter element 12, thereby cooling the filter membrane of the first filter element 12 again.

[0080] The zero-cold-water circuit system also includes a first check valve 72, which is installed in the return line 7 with its inlet facing the first line 5. The first check valve 72 allows the return line 7 to flow unidirectionally from the end near the first line 5 to the end near the booster pump 11, preventing water from flowing backward in the return line 7.

[0081] The heating unit 3 also includes a temperature sensor 35, which is installed in the second pipe 6 and near the outlet of the heating unit 3. The temperature sensor 35 is used to detect the water temperature at the outlet of the heating unit 3. Normally, the temperature sensor 35 is electrically connected to the controller, which adjusts the power of the heating unit 3 and the water valve assembly 32 according to the water temperature at the outlet to obtain hot water at the hot water end 200 at the user's required temperature.

[0082] The zero-cold-water system also includes a second check valve 43, which is installed in the zero-cold-water pipeline 4 with its inlet facing the outlet of the heating unit 3. The second check valve 43 allows the zero-cold-water pipeline 4 to flow unidirectionally from one end near the second pipeline 6 to the end near the booster pump 11, preventing water from flowing backward in the zero-cold-water pipeline 4.

[0083] The zero-cold-water system also includes a normal-temperature water circuit 8. One end of the normal-temperature water circuit 8 is connected to the first pipeline 5 via a third three-way valve 81, and the other end of the normal-temperature water circuit 8 is connected to the normal-temperature water terminal 300. A fourth switch valve 82 is installed on the normal-temperature water circuit 8. During water production, the fourth switch valve 82 can be opened, and the user at the normal-temperature water terminal 300 can obtain normal-temperature water.

[0084] In this embodiment, the filtration unit 1 further includes a second filter element 13. The first filter element 12 is commonly referred to as a post-filter element or nanofiltration membrane filter element, and the second filter element 13 is also called a pre-filter element. The second filter element 13 includes a pre-filtration section 131 and a post-filtration section 132. To save installation space, the pre-filtration section 131 and the post-filtration section 132 are integrated together. The pre-filtration section 131 is installed in the water circuit between the first switch valve 2 and the booster pump 11, and the post-filtration section 132 is installed in the passage between the clean water outlet 121 of the first filter element 12 and the first pipeline 5. The pre-filtration section 131 performs coarse filtration, the nanofiltration membrane filter element (first filter element 12) is used for fine filtration, and the post-filtration section 132 is used to improve the taste of the purified water.

[0085] In this embodiment, for ease of controller operation, the first switching valve 2, the second switching valve 41, the third switching valve 71, and the fourth switching valve 82 are all solenoid valves. Of course, in other embodiments, the first switching valve, the second switching valve, the third switching valve, and the fourth switching valve are all on / off valves.

[0086] In this embodiment, the water flow direction in the zero-cold-water system is as shown by the arrows on the water path.

[0087] This embodiment also discloses an integrated air purifier and heat pump, which further includes the zero-cold water circuit system described above.

[0088] In the description herein, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model.

[0089] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A zero-cold-water circuit system, characterized in that, It includes: The filtration unit includes a booster pump and a first filter element installed sequentially along the water flow direction on the water path; The first switching valve is installed on the upstream water line of the inlet of the filter unit; A heating unit, wherein the water inlet of the heating unit is connected to the clean water outlet of the first filter element through a first pipe, and the water outlet of the heating unit is connected to the hot water end through a second pipe; A zero-cold-water pipeline, wherein the inlet end of the zero-cold-water pipeline is connected to the second pipeline, and the outlet end of the zero-cold-water pipeline is connected to the upstream water line of the booster pump through a first three-way valve, wherein the first three-way valve is located on the water line between the first switch valve and the booster pump; The second switching valve is installed in the zero-cold water pipeline.

2. The zero-cold-water circuit system as described in claim 1, characterized in that, The heating unit includes a flow meter and a heating element. Both the flow meter and the heating element are installed in the passage between the first pipeline and the second pipeline, with the flow meter located upstream of the heating element.

3. The zero-cold-water circuit system as described in claim 2, characterized in that, The heating unit further includes a drive pump and a water valve assembly. The drive pump and the water valve assembly are both installed in the passage between the first pipeline and the second pipeline. The drive pump and the water valve assembly are both located upstream of the heating element. The water valve assembly includes a solenoid valve and a pressure reducing valve.

4. The zero-cold-water circuit system as described in claim 1, characterized in that, The zero-cold-water system also includes a return pipe, the inlet of which is connected to the first pipe via a second three-way valve, and the outlet of which is connected to the outlet of the zero-cold-water pipe. A third switch valve is installed on the return pipe.

5. The zero-cold-water circuit system as described in claim 4, characterized in that, The zero-cold-water system also includes a mixing tank, which is installed at the outlet end of the zero-cold-water pipeline.

6. The zero-cold-water circuit system as described in claim 4, characterized in that, The zero-cold-water circuit system also includes a first check valve, which is installed in the return pipeline with its inlet facing the first pipeline.

7. The zero-cold-water circuit system as described in claim 1, characterized in that, The heating unit also includes a temperature sensor, which is installed in the second pipeline and close to the water outlet of the heating unit; And / or, the zero-cold-water circuit system further includes a second check valve, which is installed in the zero-cold-water pipeline and has its inlet facing the outlet of the heating unit.

8. The zero-cold-water circuit system as described in claim 1, characterized in that, The zero-cold-water circuit system also includes a normal-temperature water circuit. One end of the normal-temperature water circuit is connected to the first pipeline through a third three-way valve, and the other end of the normal-temperature water circuit is connected to the normal-temperature water end. A fourth switch valve is installed on the normal-temperature water circuit.

9. The zero-cold-water circuit system as described in claim 1, characterized in that, The filtration unit further includes a second filter element, which includes a pre-filtration section and a post-filtration section. The pre-filtration section is installed in the water line between the first switch valve and the booster pump, and the post-filtration section is installed in the passage between the clean water inlet of the first filter element and the first pipeline.

10. A combined air purifier and heater, characterized in that, The integrated air purifier and heater also includes a zero-cold water circuit system as described in any one of claims 1-9.

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