Water heater capable of recycling pure water
By setting up airbags in the water storage compartment of the water heater and recycling pure water using its volume changes, the problem of pure water contamination after the shutdown of the water heater is solved, effectively recycling of pure water and long-term use of the water heater is achieved.
Patent Information
- Application Number
- CN202323670873.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-30
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2033-12-30
AI Technical Summary
In the prior art, when the water heater is used again after shutdown, the pure water is contaminated, resulting in an increase in scale, affecting the service life and safety of the water heater.
A pure water recovery water heater is designed. By setting up an airbag in the water storage compartment and changing the pressure value in the water storage compartment by changing the airbag volume volume, the pure water and residual pure water in the heating pipeline that have not been discharged are recovered.
It effectively avoids contamination of pure water, reduces the formation of scale, extends the service life of the water heater, and ensures that users can obtain pure water that meets the temperature requirements as soon as possible.
Smart Images
Figure CN222560253U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water purification, in particular to a water heater for recovering pure water. Background Art
[0002] A water heater is an indispensable household product in daily life. It is used to provide hot water for users' daily life, that is, to heat water. During the heating process, water will produce scale. The amount of scale produced depends on the impurity content in the water. The scale will accumulate in the water heater, bringing risks to the water heater's applicability and reducing the service life of the water heater. Therefore, in order to prolong the life of the water heater, most of the existing technologies input concentrated water and / or pure water into the water heater to reduce scale formation in the water heater.
[0003] In the prior art, concentrated water and / or pure water can be obtained through a filtering device, for example, an RO water purifier including a reverse osmosis filter membrane (RO membrane). However, when the RO water purifier stops working, the TDS (total dissolved solids) in the raw water will penetrate the RO membrane through the action of forward osmosis. When the RO machine changes from a shutdown state to a water production state, the generated pure water will mix with the TDS that has passed through, causing the pure water remaining in the pipeline between the water purifier and the heater to be contaminated. Therefore, whenever the RO machine is shut down for a period of time and then produces water, the TDS of the first cup of water is relatively high, and the longer the shutdown time, the higher the TDS.
[0004] At present, the following method is used to solve the problem of high TDS after the machine is shut down and used again: add a pure water tank (also called a pressure tank) behind the RO membrane, and the pure water tank can dilute the TDS that penetrates. However, the pure water tank (also called a pressure tank) is easy to breed bacteria, which will also pollute the pure water, increase the scale generated in the water heater, affect the safety of the water heater, and shorten the service life of the water heater. At the same time, residual pure water that has been heated but not discharged will remain in the heating pipeline and the pure water pipeline. Since the temperature of the residual pure water decreases over time, when the user uses the heater to obtain hot water again, the user will first obtain the residual pure water after the temperature has dropped, and the water heater cannot discharge hot water immediately, causing inconvenience to the user. Utility Model Content
[0005] In view of this, the utility model provides a pure water recovery water heater, which is used to solve the problem in the prior art that the pure water remaining in the pipeline between the water purifier and the heater is polluted, which increases the amount of scale produced by the water heater and affects the service life of the water heater. In order to achieve one or part or all of the above purposes or other purposes, the utility model proposes a pure water recovery water heater including: a filtration system, a water inlet pipeline, a pure water pipeline, a waste water pipeline and a heating pipeline, the pure water pipeline is provided with a first control valve and a second control valve, the water inlet pipeline is connected to the water inlet end of the filtration system, the waste water pipeline is connected to the waste water outlet of the filtration system, the pure water pipeline is connected to the water outlet end of the filtration system, the pure water pipeline is connected to the water inlet of the heating pipeline through a second control valve with a diversion function, and the water outlet of the heating pipeline is connected to the pure water pipeline downstream of the second control valve. The water heater also includes a recovery pipeline, a drainage pipeline and a water storage tank. The water storage tank is a sealed structure. An air bag is arranged in the water storage tank. A preset structure for changing the volume of the air bag is arranged in the air bag. One end of the recovery pipeline is connected to the pure water pipeline upstream of the second control valve, and the other end of the recovery pipeline is connected to the water storage tank. A third control valve is arranged on the recovery pipeline. A drainage pump is arranged on the drainage pipeline. The water outlet of the drainage pump is connected to the pure water pipeline downstream of the first control valve through one end of the drainage pipeline, and the water inlet of the drainage pump is connected to the water storage tank through the other end of the drainage pipeline.
[0006] Optionally, the pure water pipeline also includes a water quality detection component, a high-pressure switch, a flow sensor and a temperature sensor. The water inlet end of the water quality detection component is connected to the water outlet end of the filtration system. The water quality detection component is connected to the flow sensor through the high-pressure switch. The first control valve is arranged between the high-pressure switch and the flow sensor. The temperature sensor is arranged downstream of the connection between the water outlet of the heating pipeline and the pure water pipeline.
[0007] Optionally, a wastewater valve is provided on the wastewater pipeline.
[0008] Optionally, the airbag may be a sealing structure made of elastic and airtight material, the outer surface of the airbag is fixedly connected to the inner wall of the water storage bin, and the preset structure is arranged in the airbag.
[0009] Optionally, the airbag may also be a planar airbag cut from an elastic and airtight material, each side of the planar airbag is fixedly connected to the bottom surface of the water storage bin, and the planar airbag and the bottom surface of the water storage bin form a sealing structure.
[0010] Optionally, the inner surface of the planar airbag is provided with the preset structure.
[0011] Optionally, the preset structure adopts a gravity block and a fixed structure, and the gravity block is connected to the inner surface of the planar airbag through the fixed structure.
[0012] Optionally, the pure water pipeline further includes a fourth control valve having a unidirectional transmission mode and a bidirectional transmission mode, and the fourth control valve is arranged between the flow sensor and the drainage pump.
[0013] Optionally, the recovery pipeline further includes a temperature detector, and the temperature detector is arranged between the third control valve and the pure water pipeline.
[0014] Optionally, the other end of the drainage pipe extends into the interior of the water storage tank, and the other end of the drainage pipe is set to an irregular shape.
[0015] Implementing the embodiments of the present utility model will have the following beneficial effects:
[0016] The present application sets up a water storage tank and changes the pressure value in the water storage tank by changing the volume of the air bag in the water storage tank, so as to recover the pure water in the heating pipeline and the pure water that has been discharged from the heating pipeline but not discharged from the pure water pipeline, so that there is no residual pure water in the heating pipeline. When the water heater is used again, the user receives the pure water currently heated by the water heater, so that the user can obtain pure water that meets the temperature requirement at the first time, that is, the first cup of water is hot water. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] in:
[0019] Figure 1 It is a structural schematic diagram of a pure water recovery water heater provided in an embodiment of the present application;
[0020] Figure 2 It is a structural schematic diagram of a pure water recovery water heater provided in an embodiment of the present application;
[0021] Figure 3 It is a schematic diagram of the structure of the air bag in the water heater for pure water recovery provided in an embodiment of the present application;
[0022] Figure 4 It is a schematic diagram of the structure of another air bag in a pure water recovery water heater provided in an embodiment of the present application;
[0023] Figure 5 It is a structural schematic diagram of a preset structure in a pure water recovery water heater provided in an embodiment of the present application;
[0024] Figure 6 It is a structural schematic diagram of another pure water recovery water heater provided in an embodiment of the present application.
[0025] Filtration system 1, water inlet valve 11, pump 12, water quality detector 13, one-way valve 14, solenoid valve 15, pressure tank 16, pressure tank water inlet valve 17, composite filter element 18, RO membrane 19, water inlet pipeline 2, pure water pipeline 3, first control valve 31, second control valve 32, water quality detection component 33, high-pressure switch 34, flow sensor 35, temperature sensor 36, fourth control valve 37, wastewater pipeline 4, wastewater valve 41, heating pipeline 5, recovery pipeline 6, third control valve 61, temperature detector 62, second control valve 32, drainage pipeline 7, drainage pump 71, water storage tank 8, air bag 81, preset structure 82, fixed structure 821, gravity block 822. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0028] like Figure 1-Figure 2As shown, the embodiment of the present application provides a pure water recovery water heater comprising: a filtration system 1, a water inlet pipeline 2, a pure water pipeline 3, a waste water pipeline 4 and a heating pipeline 5, wherein the pure water pipeline 3 is provided with a first control valve 31 and a second control valve 32, the water inlet pipeline 3 is connected to the water inlet end of the filtration system 1, the waste water pipeline 4 is connected to the waste water outlet of the filtration system 1, the pure water pipeline 3 is connected to the water outlet end of the filtration system 1, the pure water pipeline 3 is connected to the water inlet of the heating pipeline 5 through the second control valve 32 with a shunt function, the water outlet of the heating pipeline 5 is connected to the pure water pipeline downstream of the second control valve 32, and the water heater further comprises a recovery pipeline 6, The drainage pipeline 7 and the water storage tank 8 are of a sealed structure. An airbag 81 is arranged in the water storage tank 8. A preset structure 82 for changing the volume of the airbag 81 is arranged in the airbag 81. One end of the recovery pipeline 6 is connected to the pure water pipeline upstream of the second control valve 32, and the other end of the recovery pipeline 6 is connected to the water storage tank 8. A third control valve 61 is arranged on the recovery pipeline 6. A drainage pump 71 is arranged on the drainage pipeline 7. The water outlet of the drainage pump 71 is connected to the pure water pipeline downstream of the first control valve 31 through one end of the drainage pipeline 7, and the water inlet of the drainage pump 71 is connected to the water storage tank 8 through the other end of the drainage pipeline 7.
[0029] By setting up a water storage tank and changing the pressure value in the water storage tank by changing the volume of the air bag in the water storage tank, the pure water in the heating pipeline and the pure water discharged from the heating pipeline but not received by the user are recovered, so that there is no residual pure water in the heating pipeline. When the water heater is used again, the user receives the pure water currently heated by the water heater, so that the user can obtain pure water that meets the temperature requirement at the first time, that is, the first cup of water is hot water.
[0030] In a possible embodiment, the pure water pipeline 3 also includes a water quality detection component 33, a high-pressure switch 34, a flow sensor 35 and a temperature sensor 36. The water inlet end of the water quality detection component 33 is connected to the water outlet end of the filtration system 1. The water quality detection component 33 is connected to the flow sensor 35 through the high-pressure switch 34. The first control valve 31 is arranged between the high-pressure switch 34 and the flow sensor 35. The temperature sensor 36 is arranged downstream of the connection between the water outlet of the heating pipeline and the pure water pipeline.
[0031] Embodiment 1:
[0032] When the pure water recovery water heater is working normally, that is, the high-pressure switch 34, the first control valve 31 and the second control valve 32 are opened, and the third control valve 61 is closed, the water inlet pipe 2 inputs the raw water into the filtration system 1, the filtration system 1 processes the raw water, and inputs the generated pure water into the pure water pipe 3 through the water outlet, and when the pure water passes through the water quality detection component 33 on the pure water pipe 3, the water quality detection component 33 samples and detects the pure water to obtain the TDS value of the pure water. If the TDS value meets the preset conditions, the high-pressure switch 34, the first control valve 31 and the second control valve 32 are kept open, and the third control valve 61 is closed. After the pure water that meets the preset conditions passes through the high-pressure switch 34 and the first control valve 31 in the open state, it passes through the flow sensor 35 on the pure water pipe 3. The flow sensor 35 counts the flow value of pure water, and the power of the water heater can be determined based on the flow value. After passing through the flow sensor 35, the pure water is diverted by the second control valve 32, and a part of the pure water is transmitted to the heating pipeline 5 connected to the second control valve 32. The heating pipeline 5 heats the part of pure water. The heating pipeline 5 includes a heating device with a water heating function. The water outlet of the heating pipeline 5 is connected to the pure water pipeline downstream of the second control valve 32, so that the pure water heated by the heating pipeline 5 is mixed with the other part of the pure water diverted by the second control valve 32. When the mixed pure water passes through the temperature sensor 36 arranged downstream of the connection between the water outlet of the heating pipeline and the pure water pipeline, the temperature sensor 36 measures the temperature of the mixed pure water and displays it based on the temperature of the mixed pure water.
[0033] Exemplarily, after the temperature sensor 36 measures the temperature of the mixed pure water, it can compare the temperature of the mixed pure water with the water temperature preset by the user to obtain the difference between the temperature of the mixed pure water and the water temperature preset by the user, and then complete the adjustment of the heating device in the heating pipeline according to the difference.
[0034] When the pure water recovery water heater stops working, that is, the high-pressure switch 34, the first control valve 31 and the second control valve 32 are opened, and the third control valve 61 is opened, since the sealing environment of the water storage tank 8 connected to the recovery pipeline 6 changes with the opening of the third control valve 61, the airbag 81 in the water storage tank 8 undergoes deformation and volume change under the action of the preset structure 82. It is common sense that the volume change of the airbag 81 will cause the pressure in the water storage tank 8 to change. Specifically, the volume of the airbag 81 becomes smaller, so that the pressure in the water storage tank 8 becomes smaller, and the reduced pressure in the water storage tank 8 will absorb the pure water in the pure water pipeline 3 that has not entered the heating pipeline and the pure water that has been mixed but not used by the user into the water storage tank 8, thereby recovering the pure water in the pure water pipeline and the heating pipeline, and the TDS (total dissolved solids content) in the raw water will not penetrate the RO membrane through the forward osmosis effect, thereby avoiding the pure water in the pure water pipeline and the heating pipeline from being contaminated.
[0035] Exemplarily, when the pure water recovery water heater stops working, that is, the high-pressure switch 34, the first control valve 31 and the second control valve 32 are opened, and the third control valve 61 is opened, since the sealing environment of the water storage tank 8 connected to the recovery pipeline 6 changes with the opening of the third control valve 61, the pure water in the pure water pipeline 3 that has not entered the heating pipeline, the pure water in the heating pipeline 5, and the pure water that has been mixed but not used by the user flow to the water storage tank 8 under the action of their own gravity, but there are inevitably horizontally arranged pipelines in the pure water pipeline 3 and the heating pipeline 5, and the pure water will not move due to the action of gravity in the horizontally arranged pipelines. Therefore, in order to ensure that the pure water in the pure water pipeline 3 that has not entered the heating pipeline, the pure water in the heating pipeline 5, and the pure water that has been mixed but not used by the user are recovered cleanly, an air bag 81 is arranged in the water storage tank 8. Since the weight of the material of the air bag 81 is relatively light, the influence of gravity on the air bag itself can be ignored. In order to ensure The pure water in the pure water pipeline 3 that has not entered the heating pipeline, the pure water in the heating pipeline 5, and the pure water that has been mixed but not used by the user are recovered cleanly, a preset structure is set in the airbag, and the volume of the airbag 81 can be changed by the preset structure. The airbag 81 in the water storage tank 8 is deformed and changed in volume under the action of the preset structure 82. It is common sense that the volume change of the airbag 81 will cause the pressure in the water storage tank 8 to change. Specifically, the volume of the airbag 81 becomes smaller, so that the pressure in the water storage tank 8 becomes smaller, and the reduced pressure in the water storage tank 8 will suck the pure water in the pure water pipeline 3 that has not entered the heating pipeline and the pure water that has been mixed but not used by the user into the water storage tank 8, and then the pure water in the pure water pipeline and the heating pipeline will be recovered. The TDS (total dissolved solids) in the raw water will not penetrate the RO membrane through the forward osmosis effect, thereby avoiding the pure water in the pure water pipeline and the heating pipeline from being contaminated, and also avoiding the discharge of the mixed pure water that has not been used by the user to the user.
[0036] Exemplarily, there are different ways of utilizing the recovered pure water. Specifically, one way of utilizing is to utilize the recovered pure water to clean the filter device 1, and discharge the waste water from cleaning the filter device 1 through the wastewater pipe 4. Another way of utilizing is that, since there is no risk of contamination for the recovered pure water, the recovered pure water can be transported to the direction of the heating pipe 5 while the pure water recovery water heater continues to work, so that the recovered pure water can be used by the user.
[0037] Exemplarily, when the recovered pure water is used to clean the filter device 1, the high-pressure switch 34, the first control valve 31 and the drain pump 71 are turned on. In order to avoid transmission errors of the recovered pure water, the second control valve 32 is closed. The recovered pure water in the water storage tank 8 is extracted by the drain pump 71 and transmitted to the first control valve 31 through the flow sensor 35. After the recovered pure water passes through the first control valve 31, it is successively input into the filter device 1 through the high-pressure switch 34 and the water quality detection component 33 to clean the filter device 1.
[0038] Exemplarily, when the pure water recovery water heater continues to work, the recovered pure water is transported to the direction of the heating pipeline 5, so that when the recovered pure water is used by the user, the high-pressure switch 34, the first control valve 31, the second control valve 32 and the drainage pump 71 are turned on, and the recovered pure water in the water storage tank 8 is extracted by the drainage pump 71, and the recovered pure water is mixed with the newly generated pure water of the filtration system 1 at the downstream position of the output end of the flow sensor 35, and the mixed pure water is diverted by the second control valve 32, and a part of the pure water is transmitted to the second control valve 32 connected to the second control valve 32. In the heating pipeline 5, the heating pipeline 5 heats the part of pure water, and the heating pipeline 5 includes a heating device with a water heating function. The water outlet of the heating pipeline 5 is connected with the pure water pipeline downstream of the second control valve 32, so that the pure water heated by the heating pipeline 5 is mixed with another part of pure water diverted by the second control valve 32. When the mixed pure water passes through the temperature sensor 36 arranged downstream of the connection between the water outlet of the heating pipeline and the pure water pipeline, the temperature sensor 36 measures the temperature of the mixed pure water and displays it based on the temperature of the mixed pure water.
[0039] In a possible implementation manner, a wastewater valve 41 is provided on the wastewater pipeline 4 .
[0040] Embodiment 2:
[0041] When the filter device 1 is cleaned with the recovered pure water, the high-pressure switch 34, the first control valve 31 and the drain pump 71 are turned on, and the waste water valve 41 is turned on. To avoid transmission errors of the recovered pure water, the second control valve 32 is closed, and the recovered pure water in the water storage tank 8 is extracted by the drain pump 71 and transmitted to the first control valve 31 through the flow sensor 35. After the recovered pure water passes through the first control valve 31, it is successively input into the filter device 1 through the high-pressure switch 34 and the water quality detection component 33 to clean the filter device 1, and the waste water after cleaning is discharged through the waste water valve 41 on the waste water pipeline 4.
[0042] Exemplarily, based on the flow data of pure water for cleaning the filter device 1 obtained by the flow sensor 35, the drainage volume of the filter device 1 is determined by comprehensively considering the cleaning effect, the volume data of the filter device 1 and the flow data of pure water, and then the waste water valve 41 is adjusted according to the drainage volume of the filter device 1.
[0043] For example, Figure 1-Figure 2 As shown, the filtration system 1 includes: an inlet valve 11, a pump 12, a water quality detector 13, a one-way valve 14, a solenoid valve 15, a pressure tank 16, a pressure tank inlet valve 17, a composite filter element 18 and a RO membrane 19, wherein one end of the inlet valve 11 is connected to the pure water end of the composite filter element 18, the other end of the inlet valve 11 is connected to the water inlet end of the pump 12, and the water outlet end of the pump 12 is connected to the pure water end of the RO membrane 19 through the water quality detector 13. The first cleaning method is: the inlet valve 11 is opened, and the pump 12 transports the water output from the composite filter element 18 to the water inlet end of the RO membrane 19. After cleaning the RO membrane 19, the waste water is discharged through 41. The pressure tank 16 is connected to the pure water end of the RO membrane 19 through the pressure tank water inlet valve 17. The pressure tank 16 is also connected to the water inlet end of the solenoid valve 15 through the pressure tank water inlet valve 17. The water outlet end of the solenoid valve 15 is connected to the water inlet end of the pump 12 through the one-way valve 14. The second cleaning method is: the water inlet valve 11 is closed, the solenoid valve 15 is closed, and the pressure tank water inlet valve 17 is opened. Under the action of pressure, the pure water in the pressure tank 16 flows into the pure water end of the RO membrane 19 through the pressure tank water inlet valve 17, thereby flushing the RO membrane 19, and the flushed waste water is discharged through 41; the third cleaning method is: the water inlet valve 11 is opened, the solenoid valve 15 is opened, and the pump 12 starts working. The pump 12 mixes the water output by the composite filter element 18 with the pure water in the pressure tank 16, and inputs the mixed water into the water inlet end of the RO membrane 19, flushes the RO membrane 19, and discharges the flushed waste water through 41.
[0044] In a possible implementation, Figure 3 As shown, the airbag 81 adopts a sealing structure made of elastic and sealed material, the outer surface of the airbag 81 is fixedly connected to the inner wall of the water storage tank 8, and the preset structure 82 is arranged in the airbag 81.
[0045] Embodiment three:
[0046] like Figure 3As shown, the airbag 81 can be a sealing structure made of elastic and sealed material, for example, an elliptical shape, and the preset structure (spring) 82 is arranged on the airbag 81. When the high-pressure switch 34, the first control valve 31 and the second control valve 32 are turned on, and the third control valve 61 is turned on, the sealing environment of the water storage tank 8 connected to the recovery pipeline 6 changes with the opening of the third control valve 61, and the airbag 81 in the water storage tank 8 is reduced under the action of the preset structure 82, and the water storage tank 8 is opened. The volume remains unchanged, but the volume of the airbag 81 decreases, that is, the free space in the water storage tank 8 increases. In a closed environment, the pressure in the water storage tank 8 decreases. According to common sense, in the absence of external force, the fluid always flows to a position with lower pressure. Then, the pure water in the pure water pipeline 3 that has not entered the heating pipeline and the pure water that has been mixed but not used by the user flow into the water storage tank 8, thereby completing the recovery of the pure water in the pure water pipeline 3 that has not entered the heating pipeline, the residual pure water in the heating pipeline, and the pure water that has been mixed but not used by the user.
[0047] In a possible embodiment, the airbag 81 is a planar airbag cut from an elastic and sealed material, each side of the planar airbag is fixedly connected to the bottom surface of the water storage bin, the planar airbag and the bottom surface of the water storage bin form a sealing structure, and the inner surface of the planar airbag is provided with the preset structure.
[0048] Embodiment 4:
[0049] like Figure 4 As shown, when the water storage bin 8 is a cube, a plane airbag of the same size as the bottom of the water storage bin 8 is cut out according to the side length of the water storage bin 8, each side of the plane airbag is fixedly connected to each side of the bottom of the water storage bin 8, and the space between the plane airbag and the bottom of the water storage bin 8 is used as the airbag space. A preset structure 82 is set in the airbag space, and the volume of the airbag space is changed by the preset structure 82. In specific implementation, the high-pressure switch 34, the first control valve 31 and the second control valve 32 are turned on, and the third control valve 61 is turned on. Due to the sealing environment of the water storage bin 8 connected to the recovery pipeline 6, As the third control valve 61 is opened, the airbag 81 in the water storage tank 8 shrinks under the action of the preset structure 82, the volume of the water storage tank 8 remains unchanged, and the volume of the airbag 81 decreases, that is, the free space in the water storage tank 8 increases. In a closed environment, the pressure in the water storage tank 8 decreases. According to common sense, in the absence of external force, the fluid always flows to a position with low pressure, and then the pure water in the pure water pipeline 3 that has not entered the heating pipeline and the pure water that has been mixed but not used by the user flow into the water storage tank 8, completing the recovery of the pure water in the pure water pipeline 3 that has not entered the heating pipeline and the pure water that has been mixed but not used by the user.
[0050] For example, the main material of the airbag is polyamide fiber (Nylon). Polyamide fiber is a synthetic fiber with high strength, wear resistance and corrosion resistance. It has certain characteristics, such as high strength, light weight, good flexibility, etc. Therefore, when manufacturing the airbag, the polyamide fiber needs to be specially treated to meet the requirements of the airbag. The airbag needs to be treated with high temperature and stretched to have sufficient strength and flexibility. In order to prevent the airbag from rupturing during inflation, the airbag also needs to be specially coated to withstand higher pressure.
[0051] For example, Figure 5 As shown, the preset structure 82 can be a gravity structure, which includes a gravity block 822 and a fixed structure 821. The gravity block 822 is fixed to the inner surface of the airbag 81 through the fixed structure 821. In a closed environment, the gravity block pulls the inner surface of the planar airbag under the action of gravity, causing the volume of the airbag 81 to shrink, the volume of the water storage tank 8 remains unchanged, and the volume of the airbag 81 is reduced, that is, the free space in the water storage tank 8 is increased. In a closed environment, the pressure in the water storage tank 8 is reduced.
[0052] Exemplarily, the preset structure 82 can be a spring structure, and the spring is vertically arranged. When the airbag 81 is a sealing structure, both ends of the spring are fixed to the inner surface of the airbag 81; when the airbag 81 is a planar airbag, one end of the spring is fixed to the inner surface of the airbag 81, and the other end of the spring is fixed to the bottom surface of the water storage tank 8.
[0053] In a possible implementation, Figure 6 As shown, the pure water pipeline 3 further includes a fourth control valve 37 having a unidirectional transmission mode and a bidirectional transmission mode, and the fourth control valve 37 is disposed between the flow sensor 35 and the drainage pump 71 .
[0054] Embodiment five:
[0055] When the pure water recovery water heater is working normally, that is, the high-pressure switch 34, the first control valve 31 and the second control valve 32 are opened, and the fourth control valve 37 is in a one-way mode (pure water can only be delivered to the heating pipeline 5). When the third control valve 61 is closed, the water inlet pipeline 2 inputs raw water into the filtration system 1, and the filtration system 1 processes the raw water and inputs the generated pure water into the pure water pipeline 3 through the water outlet. When the pure water passes through the water quality detection component 33 on the pure water pipeline 3, the water quality detection component 33 samples and detects the pure water to obtain the TDS value of the pure water. If the TDS value meets the preset conditions, the high-pressure switch 34, the first control valve 31 and the second control valve 32 are kept open, and the third control valve 61 is closed. After the pure water that meets the preset conditions passes through the high-pressure switch 34 and the first control valve 31 in the open state, it passes through the pure water pipeline 3 The flow sensor 35 on the water heater counts the flow value of pure water, and the power of the water heater can be determined based on the flow value. After the pure water passes through the flow sensor 35 and the fourth control valve 37, it is diverted by the second control valve 32, and a part of the pure water is transmitted to the heating pipeline 5 connected to the second control valve 32. The heating pipeline 5 heats the part of pure water. The heating pipeline 5 includes a heating device with a water heating function. The water outlet of the heating pipeline 5 is connected to the pure water pipeline downstream of the second control valve 32, so that the pure water heated by the heating pipeline 5 is mixed with the other part of the pure water diverted by the second control valve 32. When the mixed pure water passes through the temperature sensor 36 arranged downstream of the connection between the water outlet of the heating pipeline and the pure water pipeline, the temperature sensor 36 measures the temperature of the mixed pure water and displays it based on the temperature of the mixed pure water.
[0056] Exemplarily, when the filter device 1 is cleaned with recovered pure water, the high-pressure switch 34, the first control valve 31 and the drain pump 71 are turned on, and the fourth control valve 37 is in a two-way mode, that is, the recovered pure water can flow to the filter device 1 through the fourth control valve 37. In order to avoid transmission errors of the recovered pure water, the second control valve 32 is closed, and the recovered pure water in the water storage tank 8 is extracted by the drain pump 71 and transmitted to the first control valve 31 through the flow sensor 35. After the recovered pure water passes through the first control valve 31, it is successively input into the filter device 1 through the high-pressure switch 34 and the water quality detection component 33 to clean the filter device 1.
[0057] Exemplarily, when the pure water recovery water heater continues to work, the recovered pure water is transported to the direction of the heating pipeline 5, so that when the recovered pure water is used by the user, the high-pressure switch 34, the first control valve 31, the second control valve 32 and the drainage pump 71 are turned on, and the recovered pure water in the water storage tank 8 is extracted by the drainage pump 71. When the power of the drainage pump 71 is too large, the extracted recovered pure water is easy to produce convection with the newly generated pure water of the filtration system 1. In order to avoid the convection phenomenon from affecting the filtration system 1, the fourth control valve 37 is in a one-way mode (pure water can only be transported to the heating pipeline 5). At the downstream position of the output end of the flow sensor 35, the recovered pure water and the newly generated pure water of the filtration system 1 are convection-connected. The water is mixed, and the mixed pure water is diverted by the second control valve 32, wherein a part of the pure water is transmitted to the heating pipeline 5 connected to the second control valve 32, and the heating pipeline 5 heats the part of the pure water. The heating pipeline 5 includes a heating device with a water heating function, and the water outlet of the heating pipeline 5 is connected to the pure water pipeline downstream of the second control valve 32, so that the pure water heated by the heating pipeline 5 is mixed with the other part of the pure water diverted by the second control valve 32. When the mixed pure water passes through the temperature sensor 36 arranged downstream of the connection between the water outlet of the heating pipeline and the pure water pipeline, the temperature sensor 36 measures the temperature of the mixed pure water and displays it based on the temperature of the mixed pure water.
[0058] In a possible implementation, Figure 6 As shown, the recovery pipeline 6 also includes a temperature detector 62 , and the temperature detector 62 is arranged between the third control valve 61 and the pure water pipeline 3 .
[0059] Embodiment six:
[0060] When the pure water recovery water heater stops working, that is, the high-pressure switch 34, the first control valve 31 and the second control valve 32 are opened, and the third control valve 61 is opened, since the heated pure water needs to be recovered, in order to avoid the pure water temperature being too high and the airbag 81 being scalded, it is necessary to detect the water temperature of the recovered pure water, and a temperature detector 62 is set between the third control valve 61 and the pure water pipeline 3. The volume of the airbag 81 becomes smaller, so that the pressure in the water storage tank 8 becomes smaller, and the reduced pressure in the water storage tank 8 will cause the pure water in the pure water pipeline 3 that has not entered the heating pipeline and the pure water that has been mixed but not used by the user to flow to the water storage tank 8. When flowing through the temperature detector 62, if the temperature detector 62 detects that the water temperature is too high, the third control valve 61 is controlled to be closed, thereby ensuring that the airbag 81 is not damaged.
[0061] In a possible implementation manner, the other end of the drainage pipe 7 extends into the water storage tank 8, and the other end of the drainage pipe is configured to be an irregular shape.
[0062] Embodiment seven:
[0063] In order to ensure that the drainage pump 71 on the drainage pipe 7 can extract the pure water in the water storage tank 8, it is necessary to extend the other end of the drainage pipe 7 into the water storage tank 8. The water storage tank 8 is provided with a volume-variable air bag 81. It is possible that the drainage pipe 7 will be blocked when the volume of the air bag 81 increases. Therefore, the end of the drainage pipe extending into the water storage tank 8 is set to an irregular shape, so that when the air bag 81 is close to the end of the drainage pipe extending into the water storage tank 8, there is still a gap between the end of the drainage pipe extending into the water storage tank 8 and the air bag 81, and the drainage pump 71 can extract the pure water in the water storage tank 8 through the gap.
[0064] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described above, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
[0065] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.
Claims
1. A pure water recovery water heater, comprising: A filtering system, a water inlet pipeline, a pure water pipeline, a waste water pipeline and a heating pipeline, wherein the pure water pipeline is provided with a first control valve and a second control valve, the water inlet pipeline is connected to the water inlet end of the filtering system, the waste water pipeline is connected to the waste water outlet of the filtering system, the pure water pipeline is connected to the water outlet end of the filtering system, the pure water pipeline is connected to the water inlet of the heating pipeline through a second control valve with a diversion function, and the water outlet of the heating pipeline is connected to the pure water pipeline downstream of the second control valve, characterized in that the water heater also includes a recovery pipeline, a drainage pipeline and A water storage tank, which is a sealed structure. An airbag is arranged in the water storage tank. A preset structure for changing the volume of the airbag is arranged in the airbag. One end of the recovery pipeline is connected to the pure water pipeline upstream of the second control valve, and the other end of the recovery pipeline is connected to the water storage tank. A third control valve is arranged on the recovery pipeline. A drainage pump is arranged on the drainage pipeline. The water outlet of the drainage pump is connected to the pure water pipeline downstream of the first control valve through one end of the drainage pipeline, and the water inlet of the drainage pump is connected to the water storage tank through the other end of the drainage pipeline.
2. The pure water recovery water heater according to claim 1, characterized in that: The pure water pipeline also includes a water quality detection component, a high-pressure switch, a flow sensor and a temperature sensor. The water inlet end of the water quality detection component is connected to the water outlet end of the filtration system. The water quality detection component is connected to the flow sensor through the high-pressure switch. The first control valve is arranged between the high-pressure switch and the flow sensor. The temperature sensor is arranged downstream of the connection between the water outlet of the heating pipeline and the pure water pipeline.
3. The pure water recovery water heater according to claim 1, characterized in that: A wastewater valve is arranged on the wastewater pipeline.
4. The pure water recovery water heater according to claim 1, characterized in that: The airbag adopts a sealing structure made of elastic and airtight material, the outer surface of the airbag is fixedly connected to the inner wall of the water storage bin, and the preset structure is arranged in the airbag.
5. The pure water recovery water heater according to claim 1, characterized in that: The airbag is a plane airbag cut from an elastic and airtight material, each side of the plane airbag is fixedly connected to the bottom surface of the water storage bin, and the plane airbag and the bottom surface of the water storage bin form a sealing structure.
6. The pure water recovery water heater according to claim 5, characterized in that: The inner surface of the planar airbag is provided with the preset structure.
7. The pure water recovery water heater according to claim 6, characterized in that: The preset structure adopts a gravity block and a fixing structure, and the gravity block is connected to the inner surface of the planar airbag through the fixing structure.
8. The pure water recovery water heater according to claim 2, characterized in that: The pure water pipeline further includes a fourth control valve having a unidirectional transmission mode and a bidirectional transmission mode, and the fourth control valve is arranged between the flow sensor and the drainage pump.
9. The pure water recovery water heater according to claim 1, characterized in that: The recovery pipeline further includes a temperature detector, which is arranged between the third control valve and the pure water pipeline.
10. The pure water recovery water heater according to claim 1, characterized in that: The other end of the drainage pipe extends into the water storage tank, and the other end of the drainage pipe is set to an irregular shape, so that when the airbag is close to the other end of the drainage pipe, there is a gap between the other end of the drainage pipe and the airbag, so that the drainage pump can extract pure water in the water storage tank through the gap.