Kitchen water purification system

Abstract

The utility model provides an under-kitchen water purification system, which comprises: a water purifier, which is provided with a raw water inlet, a first pure water outlet and a second pure water outlet, and the raw water inlet is used for communicating with an external water source; the refrigerating device comprises a cold water tank and a refrigerating module, the cold water tank is provided with a water tank inlet and a water tank outlet, and the water tank inlet is communicated with the first pure water outlet; the instant heating faucet is provided with an instant heating water inlet and an instant heating water outlet which are communicated with the heating pipe; one end of the instant-heating water pipe is communicated with the second pure water outlet, and the other end of the instant-heating water pipe is communicated with the instant-heating water inlet; one end of the cold water conveying pipe is communicated with the water tank outlet, the other end of the cold water conveying pipe is communicated with the instant heating water conveying pipe, and a cold water conveying pump is arranged on the cold water conveying pipe. According to the under-kitchen water purification system disclosed by the embodiment of the invention, the refrigerating device and the instant heating faucet are arranged, so that the under-kitchen water purification system has the functions of refrigerating water and heating water, and the requirements of users on drinking cold water and hot water are met.

Description

Technical Field

[0001] This application relates to the technical field of water purification equipment, and particularly to an under-counter water purification system. Background Art

[0002] The main function of an under-counter water purifier is to purify kitchen water to ensure the safety and health of drinking water quality. The under-counter water purifier mainly removes harmful substances such as impurities, heavy metals, and bacteria in water through a multi-stage filtration system, and provides pure water meeting the direct drinking standard.

[0003] For example, in the patent with the publication number CN217025557U, an under-counter water purifier is disclosed, which includes a water purification cavity, a main machine panel, and a bottom plate. The main machine panel is fixed on the top of the water purification cavity, and a water treatment mechanism is assembled inside the water purification cavity for filtering the incoming water from the outside. The above-disclosed under-counter water purifier only has the function of water purification, can only provide normal-temperature pure water, and does not have the functions of making ice water and hot water, which cannot meet the user's needs for drinking ice water and hot water. Summary of the Invention

[0004] The embodiments of this application provide an under-counter water purification system to solve the problems existing in the related technologies. The technical solutions are as follows:

[0005] The embodiments of this application provide an under-counter water purification system, including:

[0006] A water purifier, which has a raw water inlet, a first pure water outlet, and a second pure water outlet. The raw water inlet is used to communicate with an external water source;

[0007] A refrigeration device, including a cold water tank and a refrigeration module. The refrigeration module is used to refrigerate the pure water in the cold water tank. The cold water tank has a tank inlet and a tank outlet, and the tank inlet is communicated with the first pure water outlet;

[0008] An instant hot faucet, which has a heating pipe inside. The instant hot faucet has an instant hot water inlet and an instant hot water outlet communicated with the heating pipe;

[0009] An instant hot water delivery pipe, one end of which is communicated with the second pure water outlet, and the other end of which is communicated with the instant hot water inlet;

[0010] A cold water delivery pipe, one end of which is communicated with the tank outlet, the other end of which is communicated with the instant hot water delivery pipe, and a cold water delivery pump is arranged on the cold water delivery pipe.

[0011] In one embodiment, the refrigeration module includes a compressor, a condenser, a dryer filter, and an evaporator connected in sequence, and the evaporator is arranged at the lower part of the cold water tank.

[0012] In one embodiment, the under-counter purification system further includes a waste water cooling component. The waste water cooling component includes a waste water delivery pipe and a waste water tank. The condenser is located inside the waste water tank. The water purifier has a waste water outlet. The waste water tank has a waste water inlet and a waste water drain outlet. One end of the waste water delivery pipe is communicated with the waste water outlet, and the other end of the waste water delivery pipe is communicated with the waste water inlet. The waste water drain outlet is connected to the sewer through a waste water pipe.

[0013] In one embodiment, a cold water temperature sensor and a liquid level switch are provided inside the cold water tank. The liquid level switch is used to detect the low liquid level and high liquid level inside the cold water tank. A waste water temperature sensor is provided inside the waste water tank.

[0014] In one embodiment, the under-counter water purification system further includes:

[0015] A pure water replenishing water path, including a pure water replenishing pipe and a replenishing solenoid valve. One end of the pure water replenishing pipe is communicated with the first pure water outlet, and the other end of the pure water replenishing pipe is communicated with the water tank inlet. The replenishing solenoid valve is arranged on the pure water replenishing pipe.

[0016] In one embodiment, the refrigeration device further includes:

[0017] A circulating sterilization water path, which includes a circulating delivery pipe, a circulating water pump and a circulating sterilization module. One end of the circulating delivery pipe is communicated with the water tank outlet, and the other end of the circulating delivery pipe is communicated with the circulating inlet on the cold water tank. The circulating water pump and the circulating sterilization module are both arranged on the circulating delivery pipe.

[0018] In one embodiment, the under-counter water purification system further includes a ventilation and exhaust component. The ventilation and exhaust component includes an air filter, an intake pipe and an exhaust pipe. The cold water tank has an exhaust hole and an intake hole. The air outlet of the air filter is connected to the intake hole through the intake pipe. The exhaust hole is connected to the instant hot water outlet of the instant hot faucet through the exhaust pipe.

[0019] In one embodiment, the under-counter water purification system further includes a pipeline machine and a pipeline machine pipeline. One end of the pipeline machine pipeline is communicated with the pure water replenishing pipe, and the other end of the pipeline machine pipeline is communicated with the water inlet of the pipeline machine.

[0020] In one embodiment, a one-way valve and a high-pressure switch are arranged on the pipeline machine pipeline, and a flow meter is arranged on the cold water delivery pipe.

[0021] In one embodiment, the under-counter water purification system further includes a pure water outlet pipe. One end of the pure water outlet pipe is communicated with the pipeline machine pipeline, and the other end of the pure water outlet pipe is communicated with the instant hot water inlet. A pure water solenoid valve is arranged on the pure water outlet pipe.

[0022] The advantages or beneficial effects in the above technical solutions at least include:

[0023] The under-counter water purification system according to the embodiments of the present application includes a water purifier, a refrigeration device, an instant hot faucet, an instant hot water delivery pipe, and a cold water delivery pipe. The water tank inlet of the cold water tank of the refrigeration device is communicated with the first pure water outlet of the water purifier, and the water tank outlet of the cold water tank is communicated with the instant hot water inlet of the instant hot faucet through the cold water delivery pipe. The second pure water outlet of the water purifier is communicated with the instant hot water inlet of the instant hot faucet through the instant hot water delivery pipe. The water purifier of the under-counter water purification system according to the embodiments of the present application can directly deliver pure water into the cold water tank, and refrigerate the pure water in the cold water tank through a refrigeration module. The refrigerated cold water can be delivered to the instant hot faucet through the cold water delivery pipe to discharge cold water. The pure water in the water purifier can also be directly delivered to the instant hot faucet through the instant hot water delivery pipe to be heated and discharge hot water. The under-counter water purification system according to the embodiments of the present application is provided with a refrigeration device and an instant hot faucet, so that it has the functions of refrigerating water and heating water, meeting the user's needs for drinking cold water and hot water.

[0024] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will become apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in accordance with the present application and should not be regarded as limiting the scope of the present application.

[0026] Figure 1 is a schematic structural diagram of the under-counter water purification system;

[0027] Figure 2 is a schematic structural diagram of the wastewater tank;

[0028] Description of the reference numerals:

[0029] 1. Water purifier; 101. Raw water inlet; 102. First pure water outlet; 103. Second pure water outlet; 2. Refrigeration device; 201. Cold water tank; 202. Water tank inlet; 203. Water tank outlet; 3. Instant hot faucet; 301. Instant hot water inlet; 302. Instant hot water outlet; 4. Instant hot water delivery pipe; 5. Cold water delivery pipe; 6. Cold water delivery pump; 7. Pure water make-up pipe; 8. Make-up water solenoid valve; 9. Flowmeter; 204. Compressor; 205. Condenser; 206. Drying filter; 207. Evaporator; 208. Cold water temperature sensor; 209. Liquid level switch; 210. Waste water delivery pipe; 211. Waste water tank; 104. Waste water outlet; 212. Waste water inlet; 213. Waste water drain outlet; 214. Waste water pipe; 215. Waste water temperature sensor; 216. Circulation delivery pipe; 217. Circulation water pump; 218. Circulation sterilization module; 219. Air filter element; 220. Air inlet pipe; 221. Exhaust pipe; 10. Pipeline machine; 11. Pipeline machine pipeline; 12. Check valve; 13. High pressure switch; 14. Pure water outlet pipe; 15. Pure water solenoid valve. Detailed implementation manners

[0030] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0031] As Figure 1 , Figure 2 shown, an under-counter water purification system provided by an embodiment of the present application includes: a water purifier 1, which has a raw water inlet 101, a first pure water outlet 102 and a second pure water outlet 103, and the raw water inlet 101 is used to communicate with an external water source; a refrigeration device 2, including a cold water tank 201 and a refrigeration module, and the refrigeration module is used to refrigerate the pure water in the cold water tank 201. The cold water tank 201 has a water tank inlet 202 and a water tank outlet 203, and the water tank inlet 202 is communicated with the first pure water outlet 102; an instant hot faucet 3, which has a heating pipe inside, and the instant hot faucet 3 has an instant hot water inlet 301 and an instant hot water outlet 302 communicated with the heating pipe; an instant hot water delivery pipe 4, one end of the instant hot water delivery pipe 4 is communicated with the second pure water outlet 103, and the other end of the instant hot water delivery pipe 4 is communicated with the instant hot water inlet 301; a cold water delivery pipe 5, one end of the cold water delivery pipe 5 is communicated with the water tank outlet 203, the other end of the cold water delivery pipe 5 is communicated with the instant hot water delivery pipe 4, and a cold water delivery pump 6 is arranged on the cold water delivery pipe 5.

[0032] The water purifier 1 of the under-sink water purification system according to the embodiment of the present application can directly deliver pure water into the cold water tank 201, and cool the pure water in the cold water tank 201 through the refrigeration module. The cooled cold water can be delivered to the instant hot faucet 3 through the cold water delivery pipe 5 to output cold water. The pure water in the water purifier 1 can also be directly delivered to the instant hot faucet 3 through the instant hot water delivery pipe 4 to be heated and then output hot water. The under-sink water purification system according to the embodiment of the present application is provided with a refrigeration device 2 and an instant hot faucet 3, so that it has the functions of cooling water and heating hot water, meeting the user's needs for drinking cold water and hot water. A one-way valve 12 is provided on the instant hot water delivery pipe 4.

[0033] A filter element for filtering raw water is provided in the water purifier 1, and the filter element can be a reverse osmosis RO membrane filter element. External tap water enters the water purifier 1 through the raw water inlet 101 for filtering, and pure water and wastewater are generated after filtering. Among them, the pure water can be directly delivered to the instant hot faucet 3 and then output water, and the pure water can also be delivered into the cold water tank 201 to provide pure water for the cold water tank 201.

[0034] In order to realize the delivery of pure water to the cold water tank 201, the under-sink water purification system further includes a pure water replenishing water circuit. The pure water replenishing water circuit includes a pure water replenishing pipe 7 and a replenishing solenoid valve 8. One end of the pure water replenishing pipe 7 is communicated with the first pure water outlet 102, and the other end of the pure water replenishing pipe 7 is communicated with the water tank inlet 202. The replenishing solenoid valve 8 is arranged on the pure water replenishing pipe 7. After the replenishing solenoid valve 8 is opened, the pure water discharged from the water purifier 1 can be delivered into the cold water tank 201 through the pure water replenishing pipe 7 for refrigeration, achieving the function of pre-cooling water. When cold water is needed, the cold water tank 201 can directly output cold water. In order to monitor the flow rate of the cold water output from the cold water tank 201, a flow meter 9 is provided on the cold water delivery pipe 5.

[0035] In order to cool the pure water in the cold water tank 201, the refrigeration module includes a compressor 204, a condenser 205, a dryer filter 206 and an evaporator 207 connected in sequence. The evaporator 207 is arranged at the lower part of the cold water tank 201. After the refrigeration module is started, the pure water in the cold water tank 201 is cooled through the evaporator 207. Among them, the refrigeration principle of the refrigeration module composed of the compressor 204, the condenser 205, the dryer filter 206 and the evaporator 207 is the prior art and will not be described in detail here.

[0036] In one embodiment, in order to fix the evaporator 207 at the lower part of the cold water tank 201, a clamping fixture can be installed at the lower part of the cold water tank 201, the evaporator 207 is fixed on the clamping fixture, and then the clamping fixture is installed on the cold water tank 201. The clamping fixture can be a circular ring structure, and the clamping fixture is sleeved on the cold water tank 201.

[0037] The cold water tank 201 is provided with a cold water temperature sensor 208 and a liquid level switch 209. The liquid level switch 209 is used to detect the low liquid level and high liquid level in the cold water tank 201. The water temperature in the cold water tank 201 is generally between 5 and 15 degrees. In one embodiment, the liquid level switch 209 can be an existing float liquid level switch. The float liquid level switch 209 has a float, a high liquid level contact and a low liquid level contact. The float can move up and down as the liquid level in the cold water tank 201 rises or falls. When the float triggers the low liquid level contact, the water level in the cold water tank 201 is at the low water level at this time, and pure water needs to be replenished into the cold water tank 201. When the float triggers the high liquid level contact, the water level in the cold water tank 201 is at the high water level, and the supply of pure water to the cold water tank 201 needs to be stopped.

[0038] In order to be able to reuse the waste water discharged from the water purifier 1, the under-counter purification system further includes a waste water cooling component. The waste water cooling component includes a waste water delivery pipe 210 and a waste water tank 211. The condenser 205 is located in the waste water tank 211. The water purifier 1 has a waste water outlet 104. The waste water tank 211 has a waste water inlet 212 and a waste water drain outlet 213. One end of the waste water delivery pipe 210 is communicated with the waste water outlet 104, and the other end of the waste water delivery pipe 210 is communicated with the waste water inlet 212. The waste water drain outlet 213 is connected to the sewer through a waste water pipe 214. The waste water tank 211 is provided with a waste water temperature sensor 215, and a waste water solenoid valve can be provided on the waste water pipe 214.

[0039] The waste water discharged from the water purifier 1 can be transported to the waste water tank 211 through the waste water delivery pipe 210. When the condenser 205 is working, the waste water in the waste water tank 211 can exchange heat with the condenser 205, thereby improving the working efficiency of the condenser 205. When the waste water temperature sensor 215 detects that the temperature in the waste water tank 211 rises to 45 degrees, the waste water in the waste water tank 211 can be discharged through the waste water drain outlet 213, and normal temperature waste water is transported into the waste water tank 211.

[0040] In order to sterilize the cold water in the cold water tank 201, the refrigeration device 2 further includes a circulating sterilization water circuit. The circulating sterilization water circuit includes a circulating delivery pipe 216, a circulating water pump 217 and a circulating sterilization module 218. One end of the circulating delivery pipe 216 is communicated with the water tank outlet 203, and the other end of the circulating delivery pipe 216 is communicated with the circulating inlet on the cold water tank 201. The circulating water pump 217 and the circulating sterilization module 218 are both arranged on the circulating delivery pipe 216. Preferably, the water tank outlet 203 is located at the bottom of the cold water tank 201, and the circulating inlet is located at the top of the cold water tank 201. The circulating sterilization module 218 is an existing module for sterilizing water. The circulating sterilization module 218 sterilizes and disinfects the cold water passing through the circulating delivery pipe 216 through a UVC lamp.

[0041] When the circulating water pump 217 starts, cold water at the bottom of the cold water tank 201 is conveyed to the upper inner part of the cold water tank 201 through the circulating water pump 217 and the circulating water pipe 216, realizing the mixing of the cold water in the cold water tank 201 and accelerating its refrigeration speed. During the process of cold water circulation, the cold water is sterilized by the circulating sterilization module 218. The circulating water pump 217 is an impeller pump. During the refrigeration process of the refrigeration module, the circulating water pump 217 is turned on for circulation every five minutes.

[0042] To control the balance of the water pressure in the cold water tank 201, the under-counter water purification system further includes a ventilation and exhaust assembly. The ventilation and exhaust assembly includes an air filter 219, an air inlet pipe 220 and an exhaust pipe 221. The cold water tank 201 is provided with an exhaust hole and an air inlet hole. The air outlet of the air filter 219 is connected to the air inlet hole through the air inlet pipe 220, and the exhaust hole is connected to the instant hot water outlet 302 of the instant hot water faucet 3 through the exhaust pipe 221. Preferably, check valves are provided on both the air inlet pipe 220 and the exhaust pipe 221.

[0043] The air inlet of the air filter 219 can be connected to the external air. The external air enters the air filter 219, is filtered and then enters the interior of the cold water tank 201 through the air inlet pipe 220. The gas in the cold water tank 201 can enter the instant hot water faucet 3 through the exhaust pipe 221 and be discharged through the instant hot water faucet 3. In one embodiment, a pressure sensor can also be provided in the cold water tank 201 to monitor the air pressure in the cold water tank 201.

[0044] An exhaust port can also be provided on the water purifier 1 and connected to the instant hot water faucet 3 through a water purifier exhaust pipe, so as to discharge the air inside the water purifier 1.

[0045] In one embodiment, the under-counter water purification system further includes a pipeline machine 10 and a pipeline machine pipeline 11. One end of the pipeline machine pipeline 11 is communicated with the pure water make-up pipe 7, and the other end of the pipeline machine pipeline 11 is communicated with the water inlet of the pipeline machine 10. A check valve 12 and a high-pressure switch 13 are provided on the pipeline machine pipeline 11.

[0046] Since the pipeline machine pipeline 11 is communicated with the pure water make-up pipe 7, and the connection between the pipeline machine pipeline 11 and the pure water make-up pipe 7 is located between the make-up water solenoid valve 8 and the first pure water outlet 102 of the water purifier 1, when the make-up water solenoid valve 8 is closed, the pure water on the water purifier 1 enters the pipeline machine pipeline 11 through the pure water make-up pipe 7, and the pipeline machine 10 can directly output normal-temperature pure water.

[0047] In one embodiment, a pipeline machine water connection port can also be provided on the cold water tank 201, and the pipeline machine water connection port is communicated with the pipeline machine 10 to directly supply cold water to the pipeline machine 10.

[0048] The pure water in the water purifier 1 can also be directly transported to the instant hot faucet 3 to produce normal-temperature pure water. Therefore, the under-sink water purification system also includes a pure water outlet pipe 14. One end of the pure water outlet pipe 14 is connected to the pipeline machine pipeline 11, and the other end of the pure water outlet pipe 14 is connected to the instant hot water inlet 301. A pure water solenoid valve 15 is provided on the pure water outlet pipe 14. When the pure water solenoid valve 15 is opened, the normal-temperature pure water in the water purifier 1 enters the pure water outlet pipe 14 through the pure water make-up pipe 7, so as to produce normal-temperature pure water from the instant hot faucet 3.

[0049] The under-sink water purification system of the embodiment of the present application has the functions of producing cold water, hot water and normal-temperature pure water:

[0050] Normal-temperature pure water mode:

[0051] The filtered pure water in the water purifier 1 is directly transported to the instant hot faucet 3 through the pure water outlet pipe 14 to produce normal-temperature pure water. At this time, the heating pipe in the instant hot faucet 3 does not work, the pure water solenoid valve 15 is opened, and the make-up water solenoid valve 8 is closed; when the heating pipe in the instant hot faucet 3 works, instant hot water can also be directly produced.

[0052] The filtered pure water in the water purifier 1 can also enter the pipeline machine 10 directly through the pure water make-up pipe 7 and the pipeline machine pipeline 11, and normal-temperature pure water is produced through the pipeline machine 10. At this time, both the pure water solenoid valve 15 and the make-up water solenoid valve 8 are in the closed state.

[0053] Cold water mode:

[0054] When the liquid level float in the cold water tank 201 detects that the liquid level in the cold water tank 201 is at a low level, the make-up water solenoid valve 8 is opened, and the water purifier 1 transports normal-temperature pure water to the cold water tank 201 through the pure water make-up pipe 7, and stops when the water level in the cold water tank 201 reaches the high level. During the process of the water purifier 1 transporting pure water to the cold water tank 201, the wastewater discharged from the water purifier 1 is transported to the wastewater tank 211.

[0055] Then the refrigeration module is started to refrigerate the pure water in the cold water tank 201. During the refrigeration process, the cold water temperature sensor 208 detects the water temperature in the cold water tank 201, and the wastewater temperature sensor 215 detects the water temperature in the wastewater tank 211. When the wastewater temperature sensor 215 detects that the water temperature in the wastewater tank 211 reaches 45 degrees, the water purifier 1 starts the flushing mode. The water purifier 1 discharges wastewater and transports it to the wastewater tank 211. At the same time, the wastewater solenoid valve is opened, and the wastewater in the wastewater tank 211 is discharged to perform the operation of changing the wastewater in the wastewater tank 211. When the cold water temperature sensor 208 detects that the water temperature in the cold water tank 201 reaches 5 degrees, the refrigeration module stops refrigerating.

[0056] In the cold water output mode, the cold water in the cold water tank 201 is directly transported through the cold water delivery pipe 5 and the cold water delivery pump 6 to the instant hot faucet 3 to output cold water. At this time, the heating pipe in the instant hot faucet 3 does not work; the cold water in the cold water tank 201 can also be directly transported to the pipeline machine 10 to make the pipeline machine 10 output cold water.

[0057] Hot water mode:

[0058] The pure water in the water purifier 1 is transported to the instant hot faucet 3 through the instant hot water delivery pipe 4, and the heating pipe in the instant hot faucet 3 starts to heat, so as to output hot water from the instant hot faucet 3.

[0059] A heating pipe can also be provided in the pipeline machine 10. After the water purifier 1 transports the pure water to the pipeline machine 10, when the heating pipe in the pipeline machine 10 is turned on, hot water is output from the pipeline machine 10.

[0060] The instant hot faucet 3, the pipeline machine 10 and the water purifier 1 in the embodiments of the present application can all be devices used in the existing market; the transportation of water in this under-counter water purification system can all be realized by a water pump, and the opening and closing of the pipeline can all be controlled by a solenoid valve. The under-counter water purification system of the present application has the functions of outputting cold water, normal temperature pure water and hot water, meeting the various functional requirements of users for the under-counter water purification system, and the water purifier 1, the refrigeration device 2 and the instant hot faucet 3 have a linkage function, with a high degree of integration.

[0061] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0062] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0063] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various changes or substitutions thereof, and these should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A kitchen water purification system, characterized in that: include: A water purifier having a raw water inlet, a first pure water outlet and a second pure water outlet, wherein the raw water inlet is used to communicate with an external water source; A refrigeration device, comprising a cold water tank and a refrigeration module, wherein the refrigeration module is used to refrigerate the pure water in the cold water tank, the cold water tank is provided with a water tank inlet and a water tank outlet, and the water tank inlet is connected to the first pure water outlet; The instant hot water faucet has a heating pipe inside, and the instant hot water faucet has an instant hot water inlet and an instant hot water outlet connected to the heating pipe; An instant hot water pipe, one end of which is connected to the second pure water outlet, and the other end of which is connected to the instant hot water inlet; A cold water pipe, one end of which is connected to the water tank outlet, and the other end of which is connected to the instant heating water pipe. A cold water delivery pump is provided on the cold water pipe.

2. The under-sink water purification system according to claim 1, characterized in that: The refrigeration module comprises a compressor, a condenser, a drying filter and an evaporator which are connected in sequence, and the evaporator is arranged at the lower part of the cold water tank.

3. The under-sink water purification system according to claim 2, characterized in that: The under-kitchen purification system also includes a wastewater cooling component, which includes a wastewater water pipe and a wastewater tank. The condenser is located in the wastewater tank. The water purifier is provided with a wastewater outlet. The wastewater tank is provided with a wastewater inlet and a wastewater drain. One end of the wastewater water pipe is connected to the wastewater outlet, and the other end of the wastewater water pipe is connected to the wastewater inlet. The wastewater drain is connected to the sewer through a wastewater pipe.

4. The under-sink water purification system according to claim 3, characterized in that: The cold water tank is provided with a cold water temperature sensor and a liquid level switch, and the liquid level switch is used to detect the low liquid level and the high liquid level in the cold water tank; the waste water tank is provided with a waste water temperature sensor.

5. The under-sink water purification system according to any one of claims 1 to 4, characterized in that: The under-sink water purification system also includes: The pure water replenishment water circuit includes a pure water replenishment pipe and a replenishment solenoid valve, one end of the pure water replenishment pipe is connected to the first pure water outlet, the other end of the pure water replenishment pipe is connected to the water tank inlet, and the replenishment solenoid valve is arranged on the pure water replenishment pipe.

6. The under-sink water purification system according to any one of claims 1 to 4, characterized in that: The refrigeration device also includes: A circulating sterilization water circuit, the circulating sterilization water circuit includes a circulating water pipe, a circulating water pump and a circulating sterilization module, one end of the circulating water pipe is connected to the water tank outlet, and the other end of the circulating water pipe is connected to the circulation inlet on the cold water tank, and the circulating water pump and the circulating sterilization module are both arranged on the circulating water pipe.

7. The under-sink water purification system according to any one of claims 1 to 4, characterized in that: The under-sink water purification system also includes a ventilation and exhaust component, which includes an air filter, an air inlet pipe and an exhaust pipe. The cold water tank is provided with an exhaust hole and an air inlet hole. The air outlet of the air filter is connected to the air inlet hole through the air inlet pipe, and the exhaust hole is connected to the instant hot water outlet of the instant hot faucet through the exhaust pipe.

8. The under-sink water purification system according to claim 5, characterized in that: The under-sink water purification system also includes a pipeline machine and a pipeline of the pipeline machine, one end of the pipeline of the pipeline machine is connected to the pure water replenishment pipe, and the other end of the pipeline of the pipeline machine is connected to the water inlet of the pipeline machine.

9. The under-sink water purification system according to claim 8, characterized in that: A one-way valve and a high-pressure switch are arranged on the pipeline of the pipeline machine, and a flow meter is arranged on the cold water delivery pipe.

10. The under-sink water purification system according to claim 8, characterized in that: The under-sink water purification system also includes a pure water outlet pipe, one end of which is connected to the pipeline of the pipeline machine, and the other end of which is connected to the instant hot water inlet. A pure water solenoid valve is provided on the pure water outlet pipe.

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