Water purifier

Abstract

The invention discloses a water purifier which is provided with a cleaning water supply end, a temperature-adjusting cleaning water output end, a drinking water supply end and a temperature-adjusting drinking water output end, the water purifier comprises a first heating device, the first heating device comprises a heating cavity, an inlet of the heating cavity is communicated with the cleaning water supply end, and an outlet of the heating cavity is communicated with the temperature-adjusting cleaning water output end; the first heating device can heat liquid in the heating cavity; the first heating device further comprises a heat exchange component, an inlet of the heat exchange component is communicated with the drinking water supply end, and an outlet of the heat exchange component is communicated with the temperature-adjusted drinking water output end; the liquid in the heating cavity can heat the liquid in the heat exchange component. The drinking water in the heat exchange component is preheated by utilizing heat of the heated cleaning water in the heating cavity, and the drinking water can be preheated only by flowing through the heat exchange component, so that the problem that the water quality is reduced due to storage is solved. And meanwhile, the waste heat of the cleaning water is effectively utilized, and the energy consumption is reduced.

Description

Technical Field

[0001] This application relates to the field of water purification equipment, specifically to a water purifier. Background Technology

[0002] Water purifiers have a dual-purpose design, integrating the functions of cleaning water and drinking water. The cleaning water is used for daily cleaning such as washing items, and after a lower level of purification, it usually provides temperature-controlled cleaning water (around 55℃ and lower). The drinking water is for direct consumption and requires a higher level of purification, usually providing room temperature drinking water and temperature-controlled drinking water (around 95℃ and lower).

[0003] In existing technologies, the water circuit setup of dual-purpose water purifiers can be referenced. Figure 1 It features a temperature-controlled cleaning water output terminal, a room-temperature drinking water output terminal, and a temperature-controlled drinking water output terminal. The room-temperature drinking water flows directly from the room-temperature drinking water output terminal without heating. The heating cleaning water circuit and the preheating drinking water circuit share a first heating device, which includes a cleaning water chamber (for injecting cleaning water to achieve heating) and a drinking water chamber (for injecting drinking water to achieve preheating). The two chambers are respectively equipped with cleaning water heaters and drinking water heaters. The cleaning water chamber is a closed type, equipped with a pressure relief valve and a temperature sensor, with the temperature generally controlled between 70℃ and 80℃. The drinking water chamber is an open type, equipped with a temperature sensor and a water level switch, with the preheating temperature of the drinking water chamber generally set at around 55℃.

[0004] After passing through the heating device, the heated cleaning water and the room temperature cleaning water mix in a thermostatic valve. Adjusting the thermostatic valve allows for the production of temperature-controlled cleaning water at different temperatures, which flows out from the temperature-controlled cleaning water output. Meanwhile, the preheated drinking water passes through a second heating device and is heated a second time to the temperature required by the consumer, which then flows out from the temperature-controlled drinking water output.

[0005] However, the water circuit setup still has the following problems: Since the first heating device uses a drinking water chamber to preheat drinking water, the principle is to filter the raw water and store it in the drinking water chamber, where it is preheated by the drinking water heater inside the drinking water chamber. When water is needed, it is dispensed and reheated by the second heating device. Because drinking water is stored in the drinking water chamber, especially when the storage time is long, it is easy for the drinking water quality to deteriorate (such as odor or bacterial growth), affecting the user's drinking experience. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the defect of water quality degradation caused by storing drinking water in the drinking water chamber in the prior art, and to provide a water purifier.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] A water purifier has a cleaning water supply end, a temperature-controlled cleaning water output end, a drinking water supply end, and a temperature-controlled drinking water output end. The water purifier includes a first heating device, which includes a heating chamber. The inlet of the heating chamber is connected to the cleaning water supply end, and the outlet of the heating chamber is connected to the temperature-controlled cleaning water output end. The first heating device is capable of heating the cleaning water in the heating chamber.

[0009] The first heating device further includes a heat exchange component, the inlet of which is connected to the drinking water supply end, and the outlet of which is connected to the temperature-controlled drinking water output end, so that the drinking water flowing through the heat exchange component can be heated by the cleaning water located in the heating chamber.

[0010] In this technical solution, by providing this water purifier, the heat from the heated cleaning water in the heating chamber can be used to preheat the drinking water in the heat exchange component. The drinking water only needs to flow through the heat exchange component to be preheated, thereby reducing the problem of water quality degradation due to storage. At the same time, this design effectively utilizes the waste heat of the cleaning water, reducing energy consumption.

[0011] Preferably, the water purifier further includes a second heating device, the inlet of which is connected to the outlet of the heat exchange component, and the outlet of which is connected to the temperature-controlled drinking water output terminal;

[0012] The second heating device is capable of heating the liquid flowing through it.

[0013] In this technical solution, the above-mentioned settings better meet the user's different temperature requirements for cleaning water and drinking water. In the first heating device, the heat from the cleaning water is used to preheat the drinking water within the heat exchange component; therefore, the heating temperature of the cleaning water will be higher than that of the drinking water. However, the maximum temperature of the cleaning water required by the user is usually lower than the maximum temperature of the drinking water, and the first heating device alone cannot simultaneously meet both requirements. By setting a second heating device to reheat the drinking water, the regulated temperature of the drinking water will be higher than that of the cleaning water, enabling the water purifier to simultaneously adapt to the maximum temperatures of both the cleaning water and drinking water required by the user.

[0014] Preferably, the water purifier further includes a preheating circuit, the inlet of which is connected to the drinking water supply end, the outlet of which is connected to the inlet of the second heating device, and the preheating circuit does not pass through the first heating device.

[0015] The temperature of the liquid inside the heating chamber is defined as the cleaning water heating temperature, and the temperature required at the temperature-controlled drinking water output terminal is defined as the drinking water regulating temperature.

[0016] When the drinking water temperature is greater than or equal to the cleaning water temperature, the drinking water flows through the heat exchange component and does not flow through the preheated water circuit.

[0017] When the drinking water temperature is lower than the cleaning water temperature, the drinking water flows through the preheated water path and does not flow through the heat exchange component.

[0018] In this technical solution, the above-described configuration allows for rapid response to users' varying drinking water temperature requirements. When the adjusted drinking water temperature is higher than the cleaning water heating temperature, the drinking water is first preheated by the cleaning water in the first heating device, and then reheated by the second heating device. When the adjusted drinking water temperature is lower than the cleaning water heating temperature, the drinking water bypasses the first heating device and is directly heated by the second heating device. This allows for the rapid supply of drinking water at lower temperatures while effectively utilizing the residual heat of the cleaning water.

[0019] Preferably, the water purifier further includes a room temperature cleaning water circuit and a mixing component;

[0020] The inlet of the ambient temperature cleaning water path is connected to the cleaning water supply end, and the outlet of the ambient temperature cleaning water path is connected to one of the inlets of the mixing component, and the ambient temperature cleaning water path does not pass through the first heating device.

[0021] The outlet of the heating chamber is connected to another inlet of the mixing assembly, and the outlet of the mixing assembly is connected to the cleaning water supply.

[0022] In this technical solution, the above-described configuration allows for a rapid response to users' varying temperature requirements for the cleaning water. Since the heat from the cleaning water is used to preheat the drinking water within the heat exchange components in the first heating device, the initial heating temperature of the cleaning water will be higher than the current temperature. When the user requires lower-temperature cleaning water, the heated cleaning water is mixed with the ambient-temperature cleaning water in the ambient-temperature cleaning water path via a mixing assembly, thereby reducing the temperature of the cleaning water output from the supply end. This allows for the efficient utilization of the residual heat of the cleaning water while rapidly supplying lower-temperature cleaning water.

[0023] Preferably, the water purifier further includes a first return water path, the inlet of which is connected to the temperature-controlled drinking water output terminal;

[0024] When the temperature-controlled drinking water output terminal stops discharging water, the first return water circuit can extract the liquid from the temperature-controlled drinking water output terminal.

[0025] In this technical solution, the above settings allow drinking water to be drawn back through the first return water path when the temperature-controlled drinking water output stops, thus preventing dripping at the temperature-controlled drinking water output due to thermal expansion, solving the inconvenience caused by dripping, and reducing water waste.

[0026] Preferably, the water purifier further includes a pre-filter structure, the outlet of which is connected to the cleaning water supply end;

[0027] The outlet of the first return water path is connected between the outlet of the pre-filter structure and the cleaning water supply end.

[0028] In this technical solution, through the above-mentioned settings, when drinking water is drawn back through the first return water path, the drawn-back drinking water can be sent between the outlet of the pre-filter structure and the cleaning water supply end. This avoids repeated pre-filtration of the drawn-back drinking water and allows it to be reused as cleaning water, thus saving water resources.

[0029] Preferably, the water purifier further includes a booster pump and a second return water circuit;

[0030] The cleaning water supply end, the booster pump, and the drinking water supply end are connected in sequence;

[0031] The inlet of the second return water path is located between the outlet of the booster pump and the drinking water supply end, and the outlet of the second return water path is located between the cleaning water supply end and the inlet of the booster pump.

[0032] In this technical solution, the above settings ensure that the water flow rate within the heating element is reasonable. The booster pump provides sufficient water pressure to the drinking water supply, but the heating element heats the water instantly. To ensure that the target temperature is reached, the water flow rate must be sufficiently low. Therefore, a second return water path is provided to return the extra pressurized water to the booster pump, providing only the flow rate sufficient for heating.

[0033] Preferably, at least a portion of the heat exchange component is located within the heating chamber.

[0034] In this technical solution, the above-mentioned configuration enables the cleaning water to directly heat the drinking water in the heat exchange component within the heating chamber. This results in a compact structure, improved heat exchange efficiency, reduced heat loss, and ensures maximum utilization of the cleaning water's thermal energy.

[0035] Preferably, the heating chamber is provided with a heating element, which is used to heat the liquid in the heating chamber;

[0036] In the vertical direction, the outlet of the heating chamber, the portion of the heat exchange component located within the heating chamber, and the heating element are arranged sequentially from top to bottom; and / or,

[0037] In the vertical direction, the outlet of the heating chamber, the inlet of the heating chamber, and the part of the heat exchange component located inside the heating chamber are arranged from top to bottom.

[0038] In this technical solution, by setting the outlet of the heating chamber, the part of the heat exchange component located in the heating chamber, and the heating element arranged sequentially from top to bottom, the water outlet of the cleaning chamber is ensured to stop before the cleaning water can submerge the part of the heat exchange component located in the heating chamber; and the heating element is prevented from dry burning in the heating chamber as much as possible, thus improving safety.

[0039] By arranging the outlet, inlet, and heat exchange components of the heating chamber from top to bottom, the cleaning water flow stops before it can submerge the heat exchange components. The portion of the cleaning water entering the heating chamber is preferentially used to heat the drinking water in the heat exchange components, thus improving the user experience at the drinking water end.

[0040] Preferably, the heat exchange component is a serpentine tube or a spiral tube; and / or,

[0041] The heat exchange component is entirely located inside the heating chamber.

[0042] In this technical solution, by setting the heat exchange component as a serpentine tube or spiral tube, the contact area between the heat exchange component and the cleaning water can be further increased to obtain higher heat exchange efficiency. By setting the entire heat exchange component inside the heating chamber, the problem of heat loss caused by the drinking water inside the heat exchange component being cooled by air when entering or leaving the heat exchange component can be avoided.

[0043] The positive and progressive effects of this invention are as follows:

[0044] By providing this water purifier, the heat from the heated cleaning water in the heating chamber can be used to preheat the drinking water in the heat exchange components. The drinking water only needs to flow through the heat exchange components to be preheated, thereby reducing the problem of water quality degradation due to storage. At the same time, this design effectively utilizes the waste heat of the cleaning water, reducing energy consumption. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the water circuit structure of a water purifier according to an embodiment of the present invention.

[0046] Explanation of reference numerals in the attached figures:

[0047] Raw water supply end 1

[0048] Cleaning water supply end 11

[0049] Drinking water supply end 12

[0050] Temperature-controlled cleaning water output terminal 211

[0051] Temperature-controlled drinking water output terminal 221

[0052] 222 Ambient temperature drinking water output terminal

[0053] Backup drinking water output terminal 223

[0054] First wastewater outlet 231

[0055] Second wastewater outlet 232

[0056] No preheating hot water circuit 31

[0057] 32-degree room temperature water circuit cleaning

[0058] First waterway 33

[0059] Second waterway 34

[0060] First heating device 4

[0061] Heating chamber 41

[0062] Inlet 411 of the heating chamber

[0063] Heating chamber outlet 412

[0064] Heat exchange component 42

[0065] Heating element 43

[0066] Second heating device 5

[0067] Mixing component 61

[0068] Pre-filter structure 62

[0069] Post-filter structure 63

[0070] Sodium Chromatography 64

[0071] Water valve assembly 65

[0072] Flow meter 66

[0073] Manual drain valve 67

[0074] Safety valve 68

[0075] First high-voltage switch 691

[0076] Second high-voltage switch 692

[0077] First temperature sensor 693

[0078] Second temperature sensor 694

[0079] Third temperature sensor 695

[0080] Water level sensor 696

[0081] Booster pump 71

[0082] First motor pump 72

[0083] Second motor pump 73 Detailed Implementation

[0084] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0085] like Figure 1 As shown, this embodiment provides a water purifier, which has a cleaning water supply end 11, a temperature-controlled cleaning water output end 211, a drinking water supply end 12, and a temperature-controlled drinking water output end 221. The water purifier includes a first heating device 4, which includes a heating chamber 41. The inlet 411 of the heating chamber 41 is connected to the cleaning water supply end 11, and the outlet 412 of the heating chamber 41 is connected to the temperature-controlled cleaning water output end 211. The first heating device 4 is capable of heating the liquid in the heating chamber 41.

[0086] The first heating device 4 also includes a heat exchange component 42, the inlet of which is connected to the drinking water supply end 12, and the outlet of which is connected to the temperature-controlled drinking water output end 221, so that the drinking water flowing through the heat exchange component 42 can be heated by the cleaning water located in the heating chamber 41.

[0087] This water purifier can use the heat from the heated cleaning water in the heating chamber 41 to preheat the drinking water in the heat exchange component 42. The drinking water only needs to flow through the heat exchange component 42 to be preheated, thereby reducing the problem of water quality degradation due to storage. At the same time, this design effectively utilizes the waste heat of the cleaning water, reducing energy consumption.

[0088] Specifically, in this embodiment, the first heating device 4 is a heat exchange tank, which is a pressurized water storage container that can heat the cleaning water to 70-85°C. When taking warm water, room temperature cleaning water and hot water are mixed to finally obtain warm water cleaning water (the setting of each cleaning water path will be further explained below).

[0089] In this embodiment, the water purifier also includes a second heating device 5. The inlet of the second heating device 5 is connected to the outlet of the heat exchange component 42, and the outlet of the second heating device 5 is connected to the temperature-controlled drinking water output terminal 221. The second heating device 5 can heat the liquid flowing through it. This arrangement better meets the user's different temperature requirements for cleaning water and drinking water: In the first heating device 4, the heat from the cleaning water is used to preheat the drinking water in the heat exchange component 42, so the heating temperature of the cleaning water will be higher than that of the drinking water. However, the maximum temperature of the cleaning water required by the user is usually lower than the maximum temperature of the drinking water, and the first heating device 4 alone cannot meet both requirements simultaneously. After the second heating device 5 reheats the drinking water, the temperature of the drinking water will be higher than that of the cleaning water, allowing the water purifier to simultaneously adapt to the maximum temperature of both the cleaning water and the drinking water required by the user.

[0090] In this embodiment, the required temperature of the temperature-controlled drinking water output terminal 221 is defined as the drinking water regulation temperature. When the drinking water regulation temperature is set to 95°C, if the second heating device 5 is not installed, the water flow rate will only be 0.6L / min, which means there is a problem of low water flow rate.

[0091] In this embodiment, the water purifier also includes a preheating-free hot water path 31. The inlet of the preheating-free hot water path 31 is connected to the drinking water supply end 12, and the outlet of the preheating-free hot water path 31 is connected to the inlet of the second heating device 5. The preheating-free hot water path 31 does not pass through the first heating device 4.

[0092] The liquid temperature within the heating chamber 41 is defined as the cleaning water heating temperature. When the drinking water's regulated temperature is greater than or equal to the cleaning water heating temperature, the drinking water flows through the heat exchange component 42 and not through the preheated water path 31; when the drinking water's regulated temperature is less than the cleaning water heating temperature, the drinking water flows through the preheated water path 31 and not through the heat exchange component 42. This configuration allows for a rapid response to users' varying drinking water temperature requirements. When the drinking water's regulated temperature is higher than the cleaning water heating temperature, the drinking water is first preheated by the cleaning water in the first heating device 4 and then reheated by the second heating device 5; when the drinking water's regulated temperature is lower than the cleaning water heating temperature, the drinking water bypasses the first heating device 4 and is directly heated by the second heating device 5. This allows for the rapid supply of drinking water at lower temperatures while effectively utilizing the residual heat of the cleaning water.

[0093] In this embodiment, the water purifier also includes a room temperature cleaning water path 32 and a mixing component 61.

[0094] The inlet of the ambient temperature cleaning water path 32 is connected to the cleaning water supply end 11, and the outlet of the ambient temperature cleaning water path 32 is connected to one of the inlets 611 of the mixing component 61. The ambient temperature cleaning water path 32 does not pass through the first heating device 4. The outlet 412 of the heating chamber 41 is connected to the other inlet 612 of the mixing component 61, and the outlet of the mixing component 61 is connected to the cleaning water supply end 11.

[0095] In this embodiment, the above-described configuration allows for a rapid response to different user temperature requirements for the cleaning water. Since the heat from the cleaning water in the first heating device 4 is used to preheat the drinking water within the heat exchange component 42, the initial heating temperature of the cleaning water will be higher than the current temperature. When the user requires lower-temperature cleaning water, the mixing component 61 mixes the heated cleaning water with the room-temperature cleaning water in the room-temperature cleaning water path 32, thereby reducing the temperature of the cleaning water output from the cleaning water supply end 11. This allows for the rapid supply of lower-temperature cleaning water while effectively utilizing the residual heat of the cleaning water.

[0096] In this embodiment, the drinking water passes through a water valve assembly 65 and a flow meter 66 before entering the heat exchange component 42. The water valve assembly 65 is a combination of a solenoid valve, a negative pressure valve, and a temperature sensor. The flow meter 66 is used to identify the flow rate of the drinking water. On the one hand, it is used to calculate the amount of drinking water passing through to facilitate users to dispense water in a quantitative manner. On the other hand, it prevents the heat exchange component 42 from drying out: when no water is detected, the heat exchange component 42 does not start heating, avoiding the problem of damage to the heat exchange component 42 due to dry burning.

[0097] In this embodiment, a third temperature sensor 695 and a water level sensor 696 are also provided in the heating chamber 41 to further avoid the problem of dry burning.

[0098] In this embodiment, a first motor pump 72 is provided in front of the heat exchange component 42, and a second motor pump 73 is also provided on the preheated water circuit 31 to provide power for drinking water and pump out drinking water, which can prevent backflow in both directions.

[0099] In this embodiment, a first temperature sensor 693 (to determine the initial water temperature, so as to determine the power of the second heating device 5) and a second temperature sensor 694 (to determine the water temperature after heating, so as to compare the difference with the target water temperature and fine-tune the temperature) are respectively provided before and after the second heating device 5. The temperature-adjusted drinking water is finally used by the user at the temperature-adjusted drinking water output terminal 221.

[0100] In this embodiment, the second heating device 5 can be an instant heating tube with a power of 3200W, and the first heating device 4 is set to maintain a temperature of 70℃ (i.e., maintain this temperature after heating to 70℃). When the inlet water temperature at the raw water supply end 1 is 5℃, and the required temperature at the temperature-controlled drinking water output end 221 is 95℃, the instant heating can only provide 0.66L / min of hot water, while this preheating + instant heating technology can reach 1.5L / min (i.e., this solution is equivalent to heating the preheated 70℃ water to 95℃ using an instant heating tube).

[0101] In this embodiment, the water purifier also includes a first return water path 33, the inlet of which is connected to the temperature-controlled drinking water output terminal 221. When the temperature-controlled drinking water output terminal 221 stops discharging water, the first return water path 33 can extract the liquid from the temperature-controlled drinking water output terminal 221. This allows drinking water to be drawn back through the first return water path 33 when the temperature-controlled drinking water output terminal 221 stops discharging water, preventing dripping at the temperature-controlled drinking water output terminal 221 due to thermal expansion, solving the inconvenience caused by dripping, and reducing water waste.

[0102] In this embodiment, through the above water circuit setup, the water purifier can divide the raw water supplied by the raw water supply terminal 1 into cleaning water supplied from the cleaning water supply terminal 11 and drinking water supplied from the drinking water supply terminal 12. The cleaning water can be output from the temperature-controlled cleaning water output terminal 211 (controlled by the mixing component 61, which receives water output / off signals from the first high-pressure switch 691 and the second high-pressure switch 692) for users to wash their hands, fruits, vegetables, etc. Drinking water at different temperatures can be output from the temperature-controlled drinking water output terminal 221, the room-temperature drinking water output terminal 222, and the standby drinking water output terminal 223 respectively for users to drink. Wastewater from the sodium chromatography 64 can be discharged from the first wastewater output terminal 231; wastewater from the heating chamber 41 can be discharged from the second wastewater output terminal 232.

[0103] In this embodiment, the water purifier also includes a pre-filter structure 62, the outlet of which is connected to the cleaning water supply end 11. The outlet of the first return water path 33 is connected between the outlet of the pre-filter structure 62 and the cleaning water supply end 11. This allows the re-pumped drinking water to be sent between the outlet of the pre-filter structure 62 and the cleaning water supply end 11 when drinking water is drawn back through the first return water path 33, avoiding repeated pre-filtration of the re-pumped drinking water and enabling it to be reused as cleaning water, thus saving water resources.

[0104] In this embodiment, the water purifier also includes a post-filter structure 63, and the pre-filter structure 62 and the post-filter structure 63 are arranged side by side to improve the spatial integration of the water purifier.

[0105] In this embodiment, the water purifier also includes a booster pump 71 and a second return water path 34; the cleaning water supply end 11, the booster pump 71, and the drinking water supply end 12 are connected in sequence; the inlet of the second return water path 34 is located between the outlet of the booster pump 71 and the drinking water supply end 12, and the outlet of the second return water path 34 is located between the cleaning water supply end 11 and the inlet of the booster pump 71. This ensures that the water flow rate within the heating element is reasonable. The booster pump 71 provides sufficient water pressure to the drinking water supply end 12, but the heating element heats instantly. To ensure that the target temperature is reached, the water flow rate must be sufficiently small. Therefore, the second return water path 34 is provided to return the extra pressurized water flow to the booster pump 71, providing only the flow rate sufficient for heating.

[0106] In this embodiment, at least a portion of the heat exchange component 42 is located inside the heating chamber 41, which enables the cleaning water to directly heat the drinking water inside the heat exchange component 42 within the heating chamber 41. This results in a compact structure, improved heat exchange efficiency, reduced heat loss, and ensures maximum utilization of the heat energy of the cleaning water.

[0107] In this embodiment, a heating element 43 is provided inside the heating chamber 41, which is used to heat the liquid inside the heating chamber 41. In the vertical direction, the outlet 412 of the heating chamber 41, the portion of the heat exchange component 42 located inside the heating chamber 41, and the heating element 43 are arranged sequentially from top to bottom. This ensures that the cleaning water stops flowing out before the cleaning water can submerge the portion of the heat exchange component 42 located inside the heating chamber 41; and it also minimizes the risk of the heating element 43 burning dry inside the heating chamber 41, thus improving safety.

[0108] In this embodiment, the outlet 412 of the heating chamber 41, the inlet 411 of the heating chamber 41, and the portion of the heat exchange component 42 located inside the heating chamber 41 are arranged sequentially from top to bottom. This ensures that the cleaning water flow stops before the cleaning water can submerge the heat exchange component 42; the portion of the cleaning water entering the heating chamber 41 is preferentially used to heat the drinking water inside the heat exchange component 42, improving the user experience at the drinking water end.

[0109] In this embodiment, the heat exchange component 42 is a spiral tube, which can further increase the contact area between the heat exchange component 42 and the cleaning water to obtain higher heat exchange efficiency. Of course, in other embodiments, the heat exchange component 42 can also be set as a serpentine tube or other similar structures.

[0110] In this embodiment, the heat exchange component 42 is located entirely within the heating chamber 41, which can prevent the drinking water in the heat exchange component 42 from being cooled by air when entering or leaving the heat exchange component 42, thus avoiding heat loss.

[0111] In this embodiment, whether the first heating device 4 is turned on is controlled by the cleaning water faucet at the temperature-adjustable cleaning water output terminal 211. When the cleaning water faucet is turned on, the second high-pressure switch 692 detects the turn-on, the pressure decreases, and the first heating device 4 automatically dispenses hot water. The maximum water temperature is A℃. If the required water temperature is lower than the insulation temperature A℃ of the first heating device 4, room temperature cleaning water is mixed into the water circuit where the first high-pressure switch 691 is located for temperature adjustment. Because the first heating device 4 uses a pressurized heat exchange tank, its water flow rate is only affected by the inlet water pressure of the tap water, and it can basically achieve the same water flow rate as the user's tap water (5-6L / min), thus enabling a large flow rate of adjustable temperature cleaning water.

[0112] In this embodiment, the first heating device 4 is also equipped with a safety valve 68 (with a one-way valve and pressure relief function), which is to prevent the pressure of the first heating device 4 from rising during the heating process and causing the pressure to be too high and unsafe. When the pressure is greater than the set safety value, the safety valve 68 opens to discharge air or water and ensure that the pressure inside the first heating device 4 is normal.

[0113] In this embodiment, the first heating device 4 is also provided with a manual drain valve 67, which is used to periodically replace and clean the cleaning water in the first heating device 4 to ensure the cleanliness of the cleaning water.

[0114] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention 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 the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A water purifier, comprising a cleaning water supply end, a temperature-controlled cleaning water output end, a drinking water supply end, and a temperature-controlled drinking water output end, wherein the water purifier includes a first heating device and a heating chamber, the inlet of the heating chamber being connected to the cleaning water supply end, and the outlet of the heating chamber being connected to the temperature-controlled cleaning water output end, the first heating device being capable of heating the cleaning water in the heating chamber, characterized in that: The water purifier also includes a heat exchange component, the inlet of which is connected to the drinking water supply end, and the outlet of which is connected to the temperature-controlled drinking water output end, so that the drinking water flowing through the heat exchange component can be heated by the cleaning water located in the heating chamber.

2. The water purifier as described in claim 1, characterized in that, The water purifier also includes a second heating device, and the outlet of the heat exchange component is connected to the temperature-controlled drinking water output end through the second heating device; The second heating device is capable of heating drinking water flowing through it.

3. The water purifier as described in claim 2, characterized in that, The water purifier also includes a preheating-free hot water path, the inlet of which is connected to the drinking water supply end, the outlet of which is connected to the inlet of the second heating device, and the preheating-free hot water path does not pass through the first heating device. The temperature of the liquid inside the heating chamber is defined as the cleaning water heating temperature, and the temperature required at the temperature-controlled drinking water output terminal is defined as the drinking water regulating temperature. When the drinking water temperature is greater than the cleaning water temperature, the drinking water flows through the heat exchange component and does not flow through the preheated water circuit. When the drinking water temperature is lower than the cleaning water temperature, the drinking water flows through the preheated water path and does not flow through the heat exchange component.

4. The water purifier as described in claim 1, characterized in that, The water purifier also includes a room temperature cleaning water circuit and a mixing component; The inlet of the ambient temperature cleaning water path is connected to the cleaning water supply end, and the outlet of the ambient temperature cleaning water path is connected to one of the inlets of the mixing component, and the ambient temperature cleaning water path does not pass through the first heating device. The outlet of the heating chamber is connected to another inlet of the mixing assembly, and the outlet of the mixing assembly is connected to the cleaning water supply.

5. The water purifier as described in claim 1, characterized in that, The water purifier also includes a first return water path, the inlet of which is connected to the temperature-controlled drinking water output end; When the temperature-controlled drinking water output terminal stops discharging water, the first return water circuit can extract the liquid from the temperature-controlled drinking water output terminal.

6. The water purifier as described in claim 5, characterized in that, The water purifier also includes a pre-filter structure, the outlet of which is connected to the cleaning water supply end; The outlet of the first return water path is connected between the outlet of the pre-filter structure and the cleaning water supply end.

7. The water purifier as described in claim 1, characterized in that, The water purifier also includes a booster pump and a second return water circuit; The cleaning water supply end, the booster pump, and the drinking water supply end are connected in sequence; The inlet of the second return water path is located between the outlet of the booster pump and the drinking water supply end, and the outlet of the second return water path is located between the cleaning water supply end and the inlet of the booster pump.

8. The water purifier according to any one of claims 1-7, characterized in that, At least a portion of the heat exchange component is located within the heating chamber.

9. The water purifier as described in claim 8, characterized in that, The heating chamber is equipped with a heating element for heating the liquid within the heating chamber; vertically, the outlet of the heating chamber, the portion of the heat exchange component located within the heating chamber, and the heating element are arranged sequentially from top to bottom; and / or, In the vertical direction, the outlet of the heating chamber, the inlet of the heating chamber, and the portion of the heat exchange component located inside the heating chamber are arranged sequentially from top to bottom.

10. The water purifier as described in claim 8, characterized in that, The heat exchange component is a serpentine tube or a spiral tube; and / or The heat exchange component is entirely located inside the heating chamber.

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