Heat purification all-in-one machine

Abstract

The utility model discloses a purifying and heating all-in-one machine which comprises a filtering assembly and a heating piece, a water outlet of the heating piece is communicated with a hot water opening of the purifying and heating all-in-one machine, and a purified water outlet of the filtering assembly is communicated with a water inlet of the heating piece through a purified water pipeline; the heat purification all-in-one machine is further provided with a constant pressure system, and the constant pressure system comprises a pressure relief pipeline and a pressure reducing valve. The water inlet end of the pressure relief pipeline and the purified water pipeline are converged at a three-way node, the water outlet end of the pressure relief pipeline is communicated to the upstream end of the booster pump, and the pressure reducing valve is arranged on the purified water pipeline and located at the downstream of the three-way node. By arranging the pressure relief pipeline and the pressure reducing valve, the pre-membrane pressure during instant heating can be effectively reduced, and the loads of the filter element and the booster pump are reduced.

Description

Technical Field

[0001] This application relates to the field of water purification technology, specifically to 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 purifier and heat pump 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.

[0003] Because the hot water flow rate is significantly less than the purified water production rate during the instant heating process, there will be an excess of purified water, which will eventually clog the pipeline. This will increase the pressure in front of the filter membrane, causing the filter and booster pump to work under overload, which will seriously affect the life of the filter and booster pump.

[0004] content

[0005] The purpose of this application is to provide an integrated air purification and heating machine that, by setting up a pressure relief pipeline and a pressure reducing valve, can effectively reduce the membrane pressure during instant heating and reduce the load on the filter element and booster pump.

[0006] The technical solution adopted in this application is as follows:

[0007] A combined air purifier and heating unit, comprising:

[0008] Filtration assembly, including filter element and booster pump;

[0009] The heating element has its outlet connected to the hot water outlet of the integrated water purifier and heater, and the purified water outlet of the filter assembly is connected to the inlet of the heating element through a purified water pipe.

[0010] The integrated water purifier and heater also includes a constant pressure system, which comprises a pressure relief pipe and a pressure reducing valve. The inlet of the pressure relief pipe merges with the purified water pipe at a T-junction, and the outlet of the pressure relief pipe is connected to the upstream end of the booster pump. The pressure reducing valve is located on the purified water pipe downstream of the T-junction. The outlet of the pressure reducing valve provides constant pressure water output.

[0011] Because the hot water flow rate is significantly less than the purified water production rate during the instant heating process, excess purified water will accumulate and eventually clog the pipes. This causes the pressure before the filter membrane to rise, leading to overload of the filter and booster pump, severely impacting their lifespan. This solution, by installing a pressure relief pipeline, effectively returns excess purified water to the booster pump, significantly reducing the pressure before the filter membrane and greatly decreasing the load on the filter and booster pump. This protects the filter and booster pump, extending their lifespan.

[0012] Meanwhile, a pressure reducing valve is installed on the water purification pipeline to reduce the water pressure entering the valve to a certain value, thereby achieving a pressure stabilization effect and facilitating precise adjustment of the subsequent flow rate.

[0013] Preferably, the constant pressure system further includes a reflux valve disposed on the pressure relief pipeline; the integrated heat and water purifier further includes a water inlet valve disposed at the upstream end of the filter assembly, and the water outlet end of the pressure relief pipeline is connected between the water inlet valve and the booster pump.

[0014] In this solution, the reflux valve is specifically a one-way valve to prevent raw water from directly entering the purified water pipeline from the pressure relief pipeline.

[0015] Preferably, the integrated heat purifier further includes a heat preservation component, wherein the water outlet of the heating element is connected to the water inlet of the heat preservation component, and the water outlet of the heat preservation component is connected to the water inlet of the heating element through a heat preservation pipe.

[0016] In this solution, the water pressure stabilized by the pressure reducing valve can be mixed with the warm water in the insulation component to achieve precise control of different temperatures; at the same time, the presence of the insulation component allows users to quickly obtain warm water by mixing the water, which also reduces the hot water heating time and shortens the waiting time for users to use hot water.

[0017] Preferably, a cold water pump is installed on the water purification pipeline downstream of the pressure reducing valve; a hot water pump is installed on the insulated pipeline.

[0018] In this solution, the pressure reducing valve works in conjunction with the chilled water pump to achieve different outlet water flow rates. Flow rate regulation is achieved by adjusting the voltage of the chilled water pump. Adjusting the voltage allows for flow rate regulation from 0.3L / min to 1.5L / min, thus meeting the flow rate requirements of the instantaneous heating element at different temperature ranges from 35℃ to 100℃. The chilled water pump is specifically a double check pump, meaning it can achieve forward shut-off even when not in operation. Furthermore, the pressure reducing valve can lower the inlet water pressure to a certain value, achieving a pressure stabilization effect and preventing the chilled water pump from experiencing reduced lifespan due to insufficient pressure resistance.

[0019] Preferably, the integrated water purifier and heater is provided with an integrated water circuit base, the integrated water circuit base is provided with a mixing chamber that communicates with the water inlet of the heating element, the heat preservation component is communicated with the mixing chamber through the hot water pump, and the outlet of the pressure reducing valve is communicated with the mixing chamber through the cold water pump.

[0020] This solution incorporates a mixing chamber within the integrated water circuit base. At-temperature water and hot water are pre-mixed in this chamber before entering the mixing pipe, shortening the mixing time and reducing the user's waiting time for hot water.

[0021] Preferably, the section of the purified water pipeline equipped with a cold water pump and the section of the insulated pipeline equipped with a hot water pump are both integrated into the integrated water circuit base, and the cold water pump and the hot water pump are mounted on the integrated water circuit base.

[0022] This solution integrates the cold water pump, hot water pump, and integrated water circuit base into one unit, making the overall design modular and compact, saving installation space, facilitating subsequent installation, and improving the overall structural compactness. Simultaneously, the sections of the purified water pipeline with the cold water pump and the insulated pipeline with the hot water pump are also integrated into the integrated water circuit base. This replaces the traditional method of connecting pipes before and after the pump, resulting in a higher degree of integration and avoiding the risk of leakage caused by the easy movement of inlet and outlet pipes due to pump vibration.

[0023] Preferably, a drain pipe for draining water from the insulation component is provided in the flow path between the hot water pump and the inlet of the heating element. A drain pressure relief valve is provided in the drain pipe. When the pressure in the hot water pipe reaches a preset pressure or the insulation component needs to drain, the drain pressure relief valve is opened.

[0024] This solution incorporates a drain pipe connected to the insulation components, effectively draining water stored within the insulation and replacing the need for faucet drainage. This eliminates the need for manual monitoring and solves the problem of inconvenient drainage when hot water is stored for extended periods. Furthermore, connecting the drain pipe to the heating element ensures that in the event of abnormal pressure buildup in the hot water pipes, the pressure will be released through the drain pipe, preventing the risk of pipe bursting due to pressure buildup.

[0025] Preferably, the drain pressure relief valve is a first check valve, and the set pressure of the first check valve is equal to the preset pressure.

[0026] This solution uses a check valve as a drain pressure relief valve. When draining, the pressure of the hot water pump opens the check valve. When there is abnormal pressure buildup in the hot water pipe and the pipe pressure reaches a certain level, the pressure can open the check valve to release the pressure. The preset pressure is not lower than the pressure in the pipe during normal operation. That is, the set pressure of the check valve is not lower than the pressure in the pipe during normal operation to ensure that there is no leakage during normal operation.

[0027] Preferably, the drain pressure relief valve is a solenoid valve, the outlet end of the drain pipe is connected to the wastewater discharge water circuit of the integrated heat purifier, and a second check valve is also provided on the drain pipe to prevent wastewater from flowing in. The set pressure of the second check valve does not exceed the preset pressure.

[0028] This solution connects the drain / air outlet of the drainage pipe to the wastewater discharge line of the integrated water purifier and heat pump, eliminating the need for additional drain / air outlets on the unit and simplifying the water circuit structure. When abnormal pressure buildup occurs in the hot water pipe section, the solenoid valve opens when the pressure reaches the preset pressure, allowing the pipe pressure to be discharged from the solenoid valve to the wastewater outlet. Simultaneously, a check valve is installed on the drainage pipe to effectively prevent wastewater backflow. Since the check valve's function is to prevent backflow, its preset pressure value does not need to be excessive.

[0029] Preferably, the outlet of the heating element is connected to the hot water outlet of the integrated water purifier and heat pump via a hot water outlet pipe, and a hot water valve is provided on the hot water outlet pipe; and / or, the outlet of the heating element is connected to the inlet of the insulation component via a water supply pipe, and a water supply valve is provided on the water supply pipe.

[0030] Because the heating element generates bubbles, residual heat, and buffering issues after heating, some water will continue to flow even after the water is turned off. Therefore, this solution can prevent the faucet from dripping after the water has been flowing for a long time and then turned off by installing a hot water valve at the rear end of the heating element.

[0031] Compared with the prior art, this application has at least the following beneficial effects:

[0032] (1) By setting up a constant pressure system including a pressure relief pipeline and a pressure reducing valve, the water pressure entering the pressure reducing valve can be reduced to a certain value to achieve a pressure stabilization effect, which facilitates the precise adjustment of the subsequent flow rate. Then, by mixing with the warm water in the insulation component, the precise control of different temperatures can be achieved. At the same time, the excess purified water is returned to the booster pump through the pressure relief pipeline, which effectively reduces the pressure in front of the filter membrane, greatly reduces the load on the filter and booster pump, protects the filter and booster pump, and extends their service life.

[0033] (2) The filtered room temperature water can be mixed with the hot water in the insulation component in the mixing chamber to form warm water, so as to quickly obtain warm water. Alternatively, the water in the insulation component can be directly heated, greatly shortening the waiting time for users to obtain hot (boiled) water.

[0034] (3) The water purification pipeline and the insulation pipeline are connected to the mixing chamber through the integrated water pipe base. The cold water pump and the hot water pump are installed on the integrated water pipe base, making the cold water pump, the hot water pump and the integrated water pipe base modular as a whole, saving the installation space occupied and facilitating subsequent installation. In addition, this integrated method replaces the traditional method of connecting pipes before and after the pump, avoiding the risk of water leakage caused by the easy movement of the inlet and outlet water pipes due to pump vibration. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the waterway structure of this application;

[0036] Figure 2This is a sectional view of the integrated water circuit base and the assembly structure of the cold water pump and hot water pump;

[0037] In the diagram: 1. Booster pump; 2. Filter element; 3. Insulation tank; 4. Instant heating element; 5. Pressure reducing valve; 6. Cold water pump; 7. Hot water pump; 8. Return valve; 9. Inlet valve; 10. Integrated water circuit base; 101. Mixing chamber; 11. Hot water valve; 12. Make-up water valve; 13. Post-filter element; 14. Drain and pressure relief valve;

[0038] 100. Water purification pipeline; 200. Insulated pipeline; 300. Pressure relief pipeline; 400. Hot water outlet pipeline; 500. Water supply pipeline; 600. Drainage pipeline. Detailed Implementation

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

[0040] like Figure 1 As shown, an integrated air purifier and heater includes a filtration assembly and a heating element. The filtration assembly includes a booster pump 1 and a filter element 2. A pre-filter element can be added upstream of filter element 2, and a post-filter element 13 can be added downstream, as needed. Filter element 2 is specifically a reverse osmosis filter element, and post-filter element 13 is specifically a post-carbon filter element. The heating element is specifically an instant heating element 4.

[0041] The outlet of the instant heating element 4 is connected to the hot water outlet of the integrated water purifier and heat pump, and the purified water outlet of the filter component is connected to the inlet of the instant heating element 4 through the purified water pipe 100.

[0042] In this application, raw water is filtered to produce purified water. Specifically, the raw water enters the booster pump 1, is pressurized, and then enters the reverse osmosis filter element for filtration. After passing through the carbon filter element for further filtration, purified water is obtained. The process of producing purified water will not be described in detail below.

[0043] The integrated water purifier and heater of this application is also equipped with a constant pressure system, which includes a pressure relief pipe 300 and a pressure reducing valve 5. The inlet end of the pressure relief pipe 300 and the purified water pipe 100 converge at the second three-way junction. The outlet end of the pressure relief pipe 300 is connected to the upstream end of the booster pump 1. The pressure reducing valve 5 is installed on the purified water pipe 100 and is located downstream of the second three-way junction. The outlet end of the pressure reducing valve 5 forms a constant pressure outlet.

[0044] Because the hot water flow rate is significantly less than the purified water production rate during the instant heating process, excess purified water will occur, eventually clogging the purified water pipe 100. This causes the pressure before the membrane of filter element 2 to increase, resulting in filter element 2 and booster pump 1 operating under overload, severely affecting their lifespan. This solution, by setting up a pressure relief pipe 300, can effectively return the excess purified water to before booster pump 1, effectively reducing the pressure before the membrane of filter element 2, greatly reducing the load on filter element 2 and booster pump 1, protecting them, and extending their lifespan.

[0045] Meanwhile, a pressure reducing valve 5 is installed on the water purification pipeline 100, which can reduce the water pressure entering the pressure reducing valve 5 to a certain value, thereby achieving a pressure stabilization effect and facilitating precise adjustment of the subsequent flow rate.

[0046] In this embodiment, the constant pressure system further includes a reflux valve 8 disposed on the pressure relief pipeline 300; the integrated water purifier and heat pump also includes an inlet valve 9 disposed upstream of the filter assembly, and the outlet of the pressure relief pipeline 300 is connected between the inlet valve 9 and the booster pump 1. The reflux valve 8 is specifically a one-way valve to prevent raw water from directly entering the purified water pipeline 100 from the pressure relief pipeline 300.

[0047] During water intake, when the purified water flow rate of the filter assembly exceeds the flow rate at the outlet of the pressure reducing valve 5, the return valve 8 and the inlet valve 9 open simultaneously. When the purified water flow rate exceeds the flow rate at the outlet of the pressure reducing valve 5, i.e., pressure buildup occurs in the pipeline, the return valve 8 opens synchronously to release pressure, effectively reducing the pressure before the membrane of filter element 2. This significantly reduces the load on filter element 2 and booster pump 1, protecting them and extending their lifespan.

[0048] In some other preferred embodiments, the integrated water purifier and heater also includes an insulation component, specifically an insulation tank 3 with an inlet and an outlet. The outlet of the heating element 4 is connected to the inlet of the insulation tank 3, and the outlet of the insulation tank 3 is connected to the inlet of the heating element 4 via an insulation pipe 200. The purified water pipe 100 and the insulation pipe 200 converge at a first tee joint, a second tee joint is located upstream of the first tee joint, and a pressure reducing valve 5 is located between the first tee joint and the second tee joint.

[0049] In a preferred embodiment, the purified water outlet of the filter assembly is connected to the inlet of the instant heating element 4 via a purified water pipe 100, and the outlet of the instant heating element 4 is connected to the inlet of the insulation tank 3, thus forming a water replenishment path for the insulation tank 3. Specifically, purified water flows into the insulation tank 3 via the purified water pipe 100 and the instant heating element 4 to replenish the water. At the same time, the outlet of the insulation tank 3 is connected to the inlet of the instant heating element 4 via an insulation pipe 200, thus forming a circulating heating water path. Specifically, the water in the insulation tank 3 is heated by the insulation pipe 200 and the instant heating element 4 and then flows back into the insulation tank 3.

[0050] In a preferred embodiment, an NTC is installed at the bottom of the heat preservation tank 3 to detect the water temperature inside the heat preservation tank 3. When the detected water temperature is within a certain range, water replenishment stops; when it exceeds the range, water replenishment begins. This temperature range can be set according to actual needs. In this embodiment, the temperature range of the heat preservation tank 3 is 65℃-80℃. When the water temperature stored in the heat preservation tank 3 is lower than 65℃, the water in the heat preservation tank 3 will start to circulate and heat up until the water temperature in the heat preservation tank 3 is heated to 80℃ and then kept warm.

[0051] Thanks to the design of the insulated tank 3, users can quickly obtain warm water by simultaneously turning on the water purification pipe 100 and the insulated pipe 200 to mix the water. They can also directly heat the warm water inside the insulated tank 3, greatly reducing the waiting time for users to obtain hot (boiled) water.

[0052] In a preferred embodiment, a cold water pump 6 is installed on the purified water pipeline 100 between the outlet of the pressure reducing valve 5 and the first tee joint; a hot water pump 7 is installed on the insulated pipeline 200. That is, the cold water pump 6 is used as the power output for purified water, and the hot water pump 7 is used as the power output for warm water in the insulated tank 3. Precise flow output of cold water and insulated water can be achieved simply by controlling the power of each pump. Furthermore, the pressure reducing valve 5, in conjunction with the cold water pump 6, can achieve different outlet flow rates. Flow rate adjustment can be achieved by adjusting the voltage of the cold water pump 6. Adjusting the voltage allows for flow rate adjustment from 0.3L / min to 1.5L / min, thus meeting the flow rate requirements of the instantaneous heating element at different temperature ranges from 35℃ to 100℃. Specifically, the cold water pump 6 in this application is a double check pump, meaning it can achieve forward shut-off even when not in operation. Simultaneously, the pressure reducing valve 5 can reduce the inlet water pressure to a certain value, achieving a pressure stabilization effect and preventing the cold water pump 6 from having a reduced lifespan due to insufficient pressure resistance.

[0053] When producing water at different temperatures, the power of the cold water pump 6, the hot water pump 7, and the instantaneous heating element 4 needs to be adjusted according to the actual situation. The following will explain the power adjustment of the cold water pump 6, the hot water pump 7, and the instantaneous heating element 4 when producing water at different temperatures.

[0054] The hot water inlet temperature is set to T, and the insulated water temperature within the 200mm insulated pipe is set to T. 保 The temperature of the purified water in the purified water pipe 100 is T0, at which point T0 ≤ T 保 .

[0055] When T0 < T < T 保 At any time, according to the water intake temperature T, the cold water pump 6 and the hot water pump 7 are turned on according to the set power ratio; or, the hot water pump 7 is turned off, and the cold water pump 6 and the instantaneous heating element 4 are turned on according to the set power according to the water intake temperature T.

[0056] At the aforementioned water intake temperature, since the water intake temperature is not high, the cold water pump 6 and hot water pump 7 can be directly turned on according to the set power ratio for water mixing. In this case, it is not necessary to turn on the instantaneous heating element. The power ratio of the cold water pump and the hot water pump is specifically determined based on the water intake temperature T. Specifically, when the water intake temperature T is closer to the purified water temperature T0, the power ratio of the cold water pump 6 to the hot water pump 7 is relatively large, that is, the cold water pump 6 operates mainly at this time. When the water intake temperature T is closer to the temperature of the insulated water T0, the power ratio of the cold water pump 6 to the hot water pump 7 is relatively large. 保 At this time, the power ratio of cold water pump 6 to hot water pump 7 is relatively small, meaning that hot water pump 7 is the main pump in operation.

[0057] It should be noted that the above-described water mixing method represents an ideal scenario. In actual operation, a temperature slightly lower than the water intake temperature T will be obtained through water mixing, and then the instantaneous heating element 4 will be used for temperature compensation to ultimately achieve precise water temperature output. At the above-described water intake temperature, precise water temperature output can also be achieved by using only the cold water pump 6 and the instantaneous heating element 4. Specifically, the hot water pump 7 can be turned off, and the instantaneous heating element 4 can be used directly for instant hot water output.

[0058] Taking hot water at 60℃-74℃ as an example, the purified water in the purified water pipe 100 is mixed with the warm water in the heat preservation tank 3. The mixture is then tested by the NTC at the inlet of the instantaneous heating element 4, and the instantaneous heating element 4 compensates for the temperature to the required level. The outlet water temperature is determined by the NTC at the outlet of the instantaneous heating element 4. Excess purified water in the purified water pipe 100 flows back to the front end of the booster pump 1 through the pressure relief pipe 300, thereby reducing the pressure before the membrane.

[0059] Meanwhile, taking hot water at 35℃-59℃ as an example, the hot water pump 7 is turned off, and the cold water pump 6 draws the purified water in the purified water pipe 100 into the instantaneous heating element 4. The instantaneous heating element 4 performs temperature compensation on it, and the excess purified water in the purified water pipe 100 flows back to the front end of the booster pump 1 through the pressure relief pipe 300, thereby reducing the pressure in front of the membrane.

[0060] When T≥T 保 At that time, according to the water intake temperature T, the heating element 4 is turned on at full power, the cold water pump 6 is turned off, and the hot water pump 7 is turned on at the set power to ensure the maximum flow rate of hot water.

[0061] At the above water intake temperature, since the water intake temperature T exceeds the temperature T of the insulation water... 保 Therefore, the warm water flowing into the insulated pipe 200 can be heated directly. At this time, the cold water pump 6 does not need to work. Meanwhile, the instant heating element 4 is turned on at full power, ensuring the maximum flow rate of hot (boiling) water and greatly shortening the waiting time for users to use hot water.

[0062] Taking hot water at 81℃-100℃ as an example, the hot water pump 6 draws the temperature inside the heat preservation tank 3 into the instantaneous heating body 4 for compensating heating. Since the cold water pump 6 is not working at this time, the pressure relief pipeline 300 does not relieve pressure.

[0063] Since the water volume in the insulation tank 3 is limited, it is necessary to monitor the water volume in the insulation tank 3. In this embodiment, a flow meter is also installed between the first three-way node and the inlet of the instantaneous heating element 4; when T≥T 保 If the cumulative water output time t of the flow meter is greater than the set value when the water is in the output state, the cold water pump 6 will be turned on and the working power of the hot water pump 7 will be reduced at the same time. The power of the cold water pump 6 is adjusted according to the water intake temperature T and the purified water temperature T0.

[0064] At the aforementioned water intake temperature and volume, when the cumulative water output time t exceeds the set value, it means the warm water in the insulation tank 3 is nearly emptied. The aforementioned time setting can be adjusted according to specific circumstances; for example, this time setting can correspond to the low water level in the insulation tank 3. At this time, the operating power of the hot water pump 7 needs to be appropriately reduced, and the power of the cold water pump 6 should be adjusted according to the water intake temperature T and the purified water temperature T0. Specifically, when the difference between the water intake temperature T and the purified water temperature T0 is large, the power of the cold water pump 6 should be appropriately reduced to decrease the flow rate. At the same time, the power of the instantaneous heating element 4 can be appropriately increased to prevent the flow rate from becoming too low. When the difference between the water intake temperature T and the purified water temperature T0 is small, the power of the cold water pump 6 should be appropriately increased to increase the flow rate. The power of the instantaneous heating element 4 can also be increased simultaneously to achieve a higher flow rate.

[0065] When the water level in the heat preservation tank 3 is about to reach the low water level, the hot water of 35-100℃ can also be directly hot water through the instant heating element 4. The excess purified water in the purified water pipe 100 flows back to the front end of the booster pump 1 through the pressure relief pipe 300, thereby reducing the pressure in front of the membrane.

[0066] In the preferred embodiment, such as Figure 2 As shown, the integrated water purifier and heater is equipped with an integrated water circuit base 10. The integrated water circuit base 10 is equipped with a mixing chamber 101 that is connected to the water inlet of the instant heating element 4. The heat preservation tank 3 is connected to the mixing chamber 101 through the hot water pump 7. The outlet of the pressure reducing valve 5 is connected to the mixing chamber 101 through the cold water pump 6.

[0067] By setting a mixing chamber inside the integrated water circuit base 10, room temperature water and hot water are mixed in the mixing chamber 101 inside the integrated water circuit base 10 before entering the mixing pipeline, which shortens the warm water mixing time and reduces the waiting time for users to use water.

[0068] Furthermore, the section of the water purification pipeline 100 equipped with the cold water pump 6 and the section of the insulated pipeline 200 equipped with the hot water pump 7 are both integrated into the integrated water circuit base 10, and the cold water pump and the hot water pump are mounted on the integrated water circuit base.

[0069] By integrating the cold water pump 6, hot water pump 7, and integrated water circuit base 10 into one unit, the overall design becomes modular and compact, saving installation space, facilitating subsequent installation, and improving the overall structural compactness. Simultaneously, the section of the purified water pipeline 100 containing the cold water pump 6 and the section of the insulated pipeline 200 containing the hot water pump 7 are also integrated into the integrated water circuit base 10. This replaces the traditional method of connecting pipes before and after the pump, resulting in a higher degree of integration and avoiding the risk of leakage caused by the easy movement of inlet and outlet pipes due to pump vibration.

[0070] In a preferred embodiment, a drain pipe 600 for draining water stored in the heat preservation tank 3 is provided in the flow path between the hot water pump 10 and the inlet of the instantaneous heating element 4. A drain pressure relief valve 14 is provided on the drain pipe 600. When the pressure in the hot water pipe reaches the preset pressure or the heat preservation tank 3 needs to drain, the drain pressure relief valve 14 is opened.

[0071] By installing a drain pipe 600 connected to the insulation tank 3, the water stored in the insulation tank 3 can be effectively drained, replacing the need for faucet drainage. This eliminates the need for manual supervision and solves the problem of inconvenient drainage when hot water is stored for extended periods. Furthermore, by connecting the drain pipe 600 to the instant heating element 4, if abnormal pressure buildup occurs in the hot water pipes and the pressure reaches a certain level, the pressure will be released through the drain pipe 600, preventing the risk of pipe bursting due to pressure buildup.

[0072] Specifically, the drain pressure relief valve 14 adopts a first check valve, and the set pressure of the first check valve is equal to the preset pressure.

[0073] A check valve is used as a drain pressure relief valve 14. When draining, the pressure of the hot water pump 10 opens the check valve. When there is abnormal pressure buildup in the hot water pipeline and the pipeline pressure reaches a certain level, the pressure can open the check valve to release the pressure. The preset pressure is not lower than the pressure in the pipeline during normal operation. That is, the set pressure of the check valve is not lower than the pressure in the pipeline during normal operation to ensure that there is no water leakage during normal operation.

[0074] In another alternative embodiment, the drain pressure relief valve 14 is a solenoid valve, the outlet of the drain pipe 600 is connected to the wastewater discharge water path of the integrated heat and water purifier, and a second check valve is also provided on the drain pipe 600, the set pressure of the second check valve does not exceed the preset pressure.

[0075] By connecting the drain / air outlet of the drainage pipe to the wastewater discharge circuit of the integrated water purifier and heat pump, there is no need to install an additional drain / air outlet on the unit, simplifying the water circuit structure. When the hot water pipe section experiences abnormal pressure buildup, the solenoid valve opens when the pressure reaches the preset pressure, allowing the pipe pressure to be discharged from the solenoid valve to the wastewater outlet. Simultaneously, a check valve is installed on the drainage pipe to effectively prevent wastewater backflow. Since the check valve's function is to prevent wastewater backflow, its preset pressure value does not need to be excessive.

[0076] The outlet of the instant heating element 4 is connected to the hot water outlet of the heat purifier through the hot water outlet pipe 400, and a hot water valve 11 is provided on the hot water outlet pipe 400. The outlet of the instant heating element 4 is connected to the inlet of the heat preservation tank 3 through the water supply pipe 500, and a water supply valve 12 is provided on the water supply pipe 500.

[0077] Because the instantaneous heating element 4 generates bubbles, residual heat, and buffering issues after heating, some water will still flow out after the water is turned off. Therefore, this embodiment can avoid the phenomenon of the faucet dripping after the water is turned off after a long period of water flow by setting a hot water valve 11 at the rear end of the instantaneous heating element 4.

[0078] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water purifying and heating integrated machine, comprising: a filter assembly including a filter element and a booster pump; a heating element, a water outlet of the heating element being in communication with a hot water outlet of the water purifying and heating integrated machine, and a purified water outlet of the filter assembly being in communication with a water inlet of the heating element through a purified water pipeline; characterized in that the water purifying and heating integrated machine is further provided with a constant pressure system, the constant pressure system including a pressure relief pipeline and a pressure reducing valve; a water inlet end of the pressure relief pipeline is converged with the purified water pipeline at a three-way joint node, and a water outlet end of the pressure relief pipeline is communicated to an upstream end of the booster pump, and the pressure reducing valve is arranged on the purified water pipeline and located downstream of the three-way joint node.

2. The heat-only integrated machine of claim 1, wherein: The constant pressure system further includes a backflow valve arranged on the pressure relief pipeline; the water purifying and heating integrated machine further includes a water inlet valve arranged at an upstream end of the filter assembly, and the water outlet end of the pressure relief pipeline is communicated between the water inlet valve and the booster pump.

3. The heat-only integrated machine of claim 1, wherein: The water purifying and heating integrated machine further includes a heat preservation assembly, the water outlet of the heating element is in communication with a water inlet of the heat preservation assembly, and a water outlet of the heat preservation assembly is in communication with the water inlet of the heating element through a heat preservation pipeline.

4. The heat-only integrated machine of claim 3, wherein: A cold water pump is arranged on the purified water pipeline downstream of the pressure reducing valve; and a hot water pump is arranged on the heat preservation pipeline.

5. The heat-only integrated machine of claim 4, wherein: The water purifying and heating integrated machine is provided with an integrated water pipeline seat, the integrated water pipeline seat is provided with a mixed water cavity in communication with the water inlet of the heating element, the heat preservation assembly is in communication with the mixed water cavity through the hot water pump, and the water outlet end of the pressure reducing valve is in communication with the mixed water cavity through the cold water pump.

6. The heat-only integrated machine of claim 5, wherein: The pipeline section of the purified water pipeline where the cold water pump is arranged and the pipeline section of the heat preservation pipeline where the hot water pump is arranged are integrated in the integrated water pipeline seat, and the cold water pump and the hot water pump are arranged on the integrated water pipeline seat.

7. The heat-only integrated machine of claim 4, wherein: A drain pipeline for draining water in the heat preservation assembly is arranged on a flow path between the hot water pump and the water inlet of the heating element, a drain pressure relief valve is arranged on the drain pipeline, and the drain pressure relief valve is opened when the pressure in the hot water pipeline reaches a preset pressure or the heat preservation assembly needs to be drained.

8. The direct heat integral machine of claim 7, wherein: The drain pressure relief valve adopts a first check valve, and the set pressure of the first check valve is equal to the preset pressure.

9. The direct heat integral machine of claim 7, wherein: The drain pressure relief valve adopts an electromagnetic valve, a water outlet end of the drain pipeline is in communication with a waste water discharge pipeline of the water purifying and heating integrated machine, a second check valve for preventing waste water from flowing in is further arranged on the drain pipeline, and the set pressure of the second check valve does not exceed the preset pressure.

10. The heat-only integrated machine of claim 3, wherein: The water outlet of the heating element is in communication with the hot water outlet of the water purifying and heating integrated machine through a hot water outlet pipeline, and a hot water valve is arranged on the hot water outlet pipeline, and / or the water outlet of the heating element is in communication with the water inlet of the heat preservation assembly through a water supplement pipeline, and a water supplement valve is arranged on the water supplement pipeline.

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