Water purification equipment with warm water function and control method thereof

Abstract

The invention provides water purification equipment with a warm water function and a control method thereof, and belongs to the technical field of water purification equipment. The filtering module comprises a filtering unit and a living water outlet unit communicated with the filtering unit, and the living water outlet unit is used for outputting living water filtered by the filtering unit; the heating module comprises a hot tank unit, and the hot tank unit is used for storing and heating water; the hot water conveying module is communicated with the hot tank unit and the living water outlet unit and used for conveying hot water in the hot tank unit to the living water outlet unit so that the hot water and the living water can be mixed in the living water outlet unit to form warm water and output the warm water. A user takes warm domestic water through the domestic water outlet unit to clean bowls and chopsticks, the oil stain cleaning effect is greatly improved, in addition, in the environment with the low temperature, the user takes warm domestic water through the domestic water outlet unit to use, and the use experience of the user can be greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of water purification equipment technology, specifically relating to a water purification device with hot and warm water functions and its control method. Background Technology

[0002] As people's demands for drinking water quality increase, water purifiers are gradually entering people's lives, such as in homes, offices, and public places. Current water purifiers typically have pre-filters and reverse osmosis filters. Tap water enters the purifier, and the water that is filtered by the pre-filter and can be used directly is called domestic water, which can be used for daily tasks such as washing dishes, fruits, and vegetables. The water that has been filtered by both the pre-filter and the reverse osmosis filter is called purified water, which can be used for direct drinking.

[0003] However, since the tap water is at room temperature, it is not very effective at removing grease when washing dishes and utensils, and it is difficult to clean the grease off the dishes and utensils. In addition, the tap water and purified water are cold in cold weather, which may cause discomfort to users. Summary of the Invention

[0004] In view of the problems existing in the prior art, the primary objective of this invention is to provide a water purification device with warm and hot water functions. The technical problem to be solved by this invention is: how to realize the function of warming domestic water, improve the cleaning ability of domestic water for washing dishes and utensils, and improve the user experience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A water purification device with hot and cold water functions includes: A filtration module, comprising a filtration unit and a domestic water outlet unit connected to the filtration unit, wherein the domestic water outlet unit is used to output domestic water filtered by the filtration unit; A heating module, comprising a heating tank unit for storing and heating water; A hot water delivery module is connected to the hot water tank unit and the domestic water outlet unit. It is used to deliver hot water from the hot water tank unit to the domestic water outlet unit so that the hot water and domestic water are mixed in the domestic water outlet unit to form warm water and then output.

[0006] In the above-mentioned water purification equipment with hot and cold water functions, the hot water delivery module includes a second delivery pipe section; the hot tank unit includes a hot tank; The inlet end of the second conveying pipe section is connected to the hot tank, and the outlet end of the second conveying pipe section is connected to the domestic water outlet unit. A conveying pump is sequentially installed on the second conveying pipe section. And / or, the hot water delivery module includes a water supply pipe section; the inlet end of the water supply pipe section is connected to the domestic water output end of the filter unit or the purified water output end of the filter unit, and the outlet end of the water supply pipe section is connected to the hot water tank for supplying water to the hot water tank; a water supply valve is provided on the water supply pipe section.

[0007] In the above-mentioned water purification device with hot and cold water functions, the heating module further includes a heat exchange unit, which has a heat exchange channel and a water channel. The hot tank unit is connected to the heat exchange channel to provide hot water to the heat exchange channel. The filtration module further includes a pure water outlet unit; the pure water outlet unit includes a pure water connecting pipe section and a pure water outlet pipe section; the inlet end of the pure water connecting pipe section is connected to the purified water output end of the filtration unit, and is used to transport pure water filtered by the filtration unit. The two ends of the water flow channel are respectively connected to the outlet end of the pure water connecting pipe section and the inlet end of the pure water outlet pipe section. The pure water flowing through the water flow channel exchanges heat with the hot water flowing through the heat exchange channel to form hot water, which is then output along the pure water outlet pipe section.

[0008] In the above-mentioned water purification device with hot and cold water functions, the heat exchange unit includes a heat exchanger, a first circulation pipe section, and a second circulation pipe section; the heat exchange channel and the water flow channel are both located in the heat exchanger. The heat exchange channel has a circulating water inlet and a circulating water outlet; the heat tank unit further includes a heater, which is disposed inside the heat tank and is used to heat the water inside the heat tank; the inlet of the first circulating pipe section is connected to the heat tank, and the outlet of the first circulating pipe section is connected to the circulating water inlet; the inlet of the second circulating pipe section is connected to the circulating water outlet, and the outlet of the second circulating pipe section is connected to the heat tank; a circulating water pump is provided on the first circulating pipe section or the second circulating pipe section; The water channel has a normal temperature water inlet and a hot water outlet. The outlet of the pure water connecting pipe section is connected to the normal temperature water inlet, and the inlet of the pure water outlet pipe section is connected to the hot water outlet.

[0009] In the above-mentioned water purification device with hot and cold water functions, the hot water delivery module includes a first delivery pipe section; a first delivery valve is provided on the first delivery pipe section; The second circulation pipe section is also equipped with a circulation valve. The circulation pump and the circulation valve are sequentially arranged in the second circulation pipe section along the water flow direction. The inlet end of the first delivery pipe section is connected to the second circulation pipe section and is located between the circulation pump and the circulation valve. The outlet end of the first delivery pipe section is connected to the domestic water outlet unit. Alternatively, the first circulation pipe section may also be equipped with a circulation valve. The circulation pump and the circulation valve are sequentially arranged in the first circulation pipe section along the water flow direction. The water inlet end of the first delivery pipe section is connected to the first circulation pipe section and is located between the circulation pump and the circulation valve.

[0010] In the aforementioned water purification device with hot and cold water functions, the heating module further includes a heating unit; The heating unit includes a parallel pipe section and a heating element. The inlet end of the parallel pipe section is connected to the pure water connection pipe section, and the outlet end of the parallel pipe section is connected to the pure water outlet pipe section. The heating element is disposed on the pure water outlet pipe section and is located between the outlet end of the parallel pipe section and the outlet end of the pure water outlet pipe section. A first heating valve is installed on the pure water connecting pipe section, and a second heating valve is installed on the parallel pipe section. The water inlet of the parallel pipe section is located between the water inlet of the pure water connecting pipe section and the first heating valve.

[0011] In the aforementioned water purification device with hot and cold water functions, the heating module further includes a sterilization unit; The sterilization unit includes a sterilization pipe section and a sterilization pump. The inlet end of the sterilization pipe section is connected to the hot water tank unit, and the outlet end of the sterilization pipe section is connected to the pure water outlet unit. The sterilization pump is installed on the sterilization pipe section and is used to transport the hot water in the hot water tank unit to the pure water outlet unit along the sterilization pipe section to sterilize the pure water outlet unit and / or the devices connected to the pure water outlet unit.

[0012] In the above-mentioned water purification device with hot and cold water functions, the filtration module further includes a water inlet unit; the water inlet unit includes a water inlet pipe section, and the water inlet end of the water inlet pipe section is connected to an external device; The filtration unit includes a pre-filter, a reverse osmosis filter, a post-filter, a first connecting pipe section, a second connecting pipe section, and a wastewater pipe section. The outlet end of the inlet pipe section is connected to the inlet end of the pre-filter; the inlet end of the first connecting pipe section is connected to the outlet end of the pre-filter, and the outlet end of the first connecting pipe section is connected to the inlet end of the reverse osmosis filter. A valve body and a booster pump are sequentially installed on the first connecting pipe section. The inlet end of the second connecting pipe section is connected to the outlet end of the reverse osmosis filter element, and the outlet end of the second connecting pipe section is connected to the inlet end of the post-filter element. The outlet end of the post-filter element is used to output pure water. The inlet end of the wastewater pipe section is connected to the wastewater end of the reverse osmosis filter element, and a first detection element and a wastewater valve are sequentially installed on the wastewater pipe section. The inlet end of the domestic water outlet unit is connected to the first connecting pipe section, and the inlet end of the domestic water outlet unit is located between the inlet end of the first connecting pipe section and the valve body.

[0013] In the aforementioned water purification device with hot and cold water functions, the filtration module further includes a first return pipe section; The inlet end of the first return pipe section is connected to the wastewater pipe section, and the outlet end of the first return pipe section is connected to the first connecting pipe section; the inlet end of the first return pipe section is located between the inlet end of the wastewater pipe section and the first detection element, and the outlet end of the first return pipe section is located between the valve body and the booster pump; a first return valve and a first return check valve are sequentially arranged on the first return pipe section.

[0014] In the above-mentioned water purification device with hot and cold water functions, the domestic water outlet unit includes a domestic water pipe section; The inlet end of the domestic water pipe section is connected to the filtration unit, and the domestic water pipe section is sequentially equipped with a domestic water valve, a first flow regulating valve, and a sterilization module.

[0015] The second objective of this invention is to provide a control method for a water purification device with hot and cold water functions: A control method for a water purification device with hot and cold water functions, applicable to the aforementioned water purification device, the control method comprising the following steps: Receive user commands to request warm domestic water; The domestic water output unit of the control filtration module outputs domestic water; Control the closing of the first heating valve, the second heating valve, and the circulation valve, and start the circulation pump and the first delivery valve to transport the hot water in the hot tank to the domestic water pipe section through the second circulation pipe section and the first delivery pipe section. And / or, control the closure of the first heating valve, the second heating valve, and the circulation valve, and start the delivery pump to deliver the hot water in the hot tank to the domestic water supply section through the second delivery pipe section; When the hot water in the hot tank drops to the preset water level, the pure water outlet unit of the control filter module outputs pure water, closes the first heating valve, the second heating valve and the circulation valve, starts the water supply valve, and replenishes the pure water from the pure water outlet unit into the hot tank through the pure water connection pipe section and the water supply pipe section, and starts the heater to heat the pure water in the hot tank.

[0016] The beneficial effects of this invention are: The water purification device of this invention delivers heated hot water to the domestic water outlet unit via a hot water delivery module through a heating tank unit. The heated hot water mixes with the room-temperature domestic water in the domestic water outlet unit, thus forming warm domestic water. Users can use this warm domestic water to wash dishes, greatly improving the cleaning effect of oil stains. Furthermore, in low-temperature environments, using the warm domestic water from the outlet unit significantly enhances the user experience.

[0017] The control method of the water purification equipment of the present invention allows users to send a command to the water purification equipment to obtain warm water, and the water purification equipment can then output warm domestic water for the user's use, greatly improving the user experience. Attached Figure Description

[0018] Figure 1 A schematic diagram of the water circuit when the water purification equipment outputs warm domestic water and is connected to the domestic water outlet unit through the first delivery pipe section; Figure 2 A schematic diagram of the water circuit when the water purification equipment outputs warm domestic water and is connected to the domestic water outlet unit through the second delivery pipe section; Figure 3 A schematic diagram of the water circuit when the water purification equipment outputs warm pure water; Figure 4 This is a schematic diagram of a hot tank unit.

[0019] In the diagram, 1. Filter module; 11. Domestic water outlet unit; 111. Domestic water pipe section; 1111. Domestic water valve; 1112. First flow regulating valve; 1113. Sterilization module; 12. Pure water outlet unit; 121. Pure water connection pipe section; 1211. Pure water check valve; 1212. Flow meter; 1213. Second detection element; 1214. Pressure reducing valve; 1215. Second flow regulating valve; 1216. First heating valve; 122. Pure water outlet pipe section; 13. Water inlet unit; 13 1. Inlet pipe section; 14. Filtration unit; 141. Pre-filter cartridge; 142. Reverse osmosis filter cartridge; 143. Post-filter cartridge; 144. First connecting pipe section; 1441. Valve body; 1442. Booster pump; 145. Second connecting pipe section; 146. Wastewater pipe section; 1461. First detection element; 1462. Wastewater valve; 15. First return pipe section; 151. First return valve; 152. First return check valve; 16. Second return pipe section; 161. Second return valve; 162. Second return... 1. One-way valve; 2. Heating module; 21. Hot tank unit; 211. Hot tank; 2111. Temperature probe; 2112. Water level detection element; 212. Heater; 213. Exhaust pipe section; 214. Air supply pipe section; 22. Heat exchange unit; 221. Heat exchanger; 222. First circulation pipe section; 223. Second circulation pipe section; 2231. Circulating water pump; 2232. Circulation valve; 23. Heating unit; 231. Parallel pipe section; 2311. Second heating valve; 232. Heating element; 24. Killer 241. Sterilization Unit; 2411. Sterilization Check Valve; 242. Sterilization Pump; 3. Hot Water Delivery Module; 31. First Delivery Pipeline; 311. First Delivery Valve; 312. First Delivery Check Valve; 32. Water Supply Pipeline; 321. Water Supply Valve; 33. Second Delivery Pipeline; 331. Delivery Pump; 332. Second Delivery Check Valve; 4. Water Dispenser Module; 41. Water Dispenser; 411. Water Dispenser Check Valve; 412. High Pressure Switch; 42. Water Dispenser Outlet Pipeline; 5. Outlet Components. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of the embodiments, it should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] In the description of the embodiments, it should be noted that when a component / part is referred to as being "set on" another component / part, it can be directly set on the other component / part or there may be an intervening component / part. When a component / part is referred to as being "connected / joined" to another component / part, it can be directly connected / joined to the other component / part or there may be an intervening component / part. The term "connected / joined" as used herein can include mechanical physical connections / joinings. The term "comprising / including" as used herein refers to the presence of a feature, step, or component / part, but does not exclude the presence or addition of one or more other features, steps, or components / parts. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. Furthermore, in the description of this application, the terms "first," "second," etc., are used for descriptive purposes and to distinguish similar objects only; there is no order between them, nor should they be construed as indicating or implying relative importance. Additionally, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] Example 1: like Figure 1-3 As shown, this embodiment provides a water purification device with hot and warm water functions, including a filtration module 1, a heating module 2, and a hot water delivery module 3. The filtration module 1 includes a filtration unit 14 and a domestic water outlet unit 11 connected to the filtration unit 14. The domestic water outlet unit 11 is used to output domestic water filtered by the filtration unit 14. The heating module 2 includes a heating tank unit 21, which is used to store and heat water. The hot water delivery module 3 is connected to the heating tank unit 21 and the domestic water outlet unit 11, and is used to deliver the hot water in the heating tank unit 21 to the domestic water outlet unit 11, so that the hot water and domestic water mix in the domestic water outlet unit 11 to form warm water and output it.

[0025] In this embodiment, the filtration module 1 filters tap water to obtain domestic water for daily use and purified water for direct drinking. The filtered domestic water is output through the domestic water outlet unit 11. The heating tank unit 21 has a heating function and can store the heated hot water in the heating tank unit 21. Since the hot water delivery module 3 is connected to the heating tank unit 21 and the domestic water outlet unit 11, when the user sends a command to the water purification equipment to obtain warm domestic water, the heating tank unit 21 delivers the heated hot water to the domestic water outlet unit 11 through the hot water delivery module 3. In the hot water outlet unit 11, the hot water heated by the heating tank unit 21 mixes with the room-temperature domestic water in the domestic water outlet unit 11, thus forming warm domestic water. Users can obtain warm domestic water according to their actual needs; for example, when washing dishes, users can use the warm domestic water from the domestic water outlet unit 11 to wash dishes, greatly improving the cleaning effect of grease. Furthermore, in low-temperature environments, users can greatly improve their user experience by using the warm domestic water from the domestic water outlet unit 11. Moreover, the heating tank unit 21 can store hot water in advance, so that a large amount of hot water can be provided when the user needs it. Therefore, when washing dishes, if a large amount of warm water is needed, compared to the slow output of instant hot water, this embodiment provides a large amount of hot water through the heating tank unit to meet the user's needs.

[0026] like Figure 1-3 As shown, the hot water delivery module 3 includes a second delivery pipe section 33; the hot water tank unit 21 includes a hot water tank 211; the inlet end of the second delivery pipe section 33 is connected to the hot water tank 211, and the outlet end of the second delivery pipe section 33 is connected to the domestic water outlet unit 11; a delivery pump 331 and a second delivery check valve 332 are sequentially arranged on the second delivery pipe section 33; and / or, the hot water delivery module 3 includes a water replenishment pipe section 32; the inlet end of the water replenishment pipe section 32 is connected to the domestic water output end or the purified water output end of the filter unit 14, and the outlet end of the water replenishment pipe section 32 is connected to the hot water tank 211 for replenishing water to the hot water tank 211; a water replenishment valve 321 is arranged on the water replenishment pipe section 32.

[0027] In this embodiment, the inlet end of the second conveying pipe section 33 is connected to the hot water tank 211, and the outlet end of the second conveying pipe section 33 is connected to the domestic water outlet unit 11. The second conveying pipe section 33 is sequentially equipped with a conveying pump 331 and a second conveying check valve 332. The hot water from the hot water tank 211 can be conveyed to the domestic water pipe section 111 through the second conveying pipe section 33 under the action of the conveying pump 331, and mixed with the room temperature domestic water in the domestic water pipe section 111 to raise the temperature of the room temperature domestic water to form warm domestic water, which is then output through the domestic water pipe section 111 for user use. The second conveying check valve 332 can prevent the domestic water in the domestic water pipe section 111 from flowing back into the hot water tank 211. When the hot water in the hot water tank unit 21 is delivered to the domestic water pipe section 111, the water level detected by the water level detection device 2112 in the hot water tank 211 drops. Since the inlet end of the water supply pipe section 32 is connected to the pure water connection pipe section 121, and the inlet end of the water supply pipe section 32 is located between the second flow regulating valve 1215 and the outlet end of the pure water connection pipe section 121, and the outlet end of the water supply pipe section 32 is connected to the hot water tank 211, a water supply valve 321 is provided on the water supply pipe section 32. The water supply valve 321 can be a solenoid valve. When the water supply valve 321 is opened, the room temperature pure water in the pure water connection pipe section 121 is delivered to the hot water tank 211 through the water supply pipe section 32 to replenish the water in the hot water tank 211 and prevent the water level in the hot water tank 211 from being too low.

[0028] like Figure 1-3 As shown, the heating module 2 further includes a heat exchange unit 22, which has a heat exchange channel and a water channel. The heating tank unit 21 is connected to the heat exchange channel to provide hot water to the heat exchange channel. The filtration module 1 further includes a pure water outlet unit 12. The pure water outlet unit 12 includes a pure water connecting pipe section 121 and a pure water outlet pipe section 122. The inlet end of the pure water connecting pipe section 121 is connected to the purified water output end of the filtration unit 14 to transport pure water filtered by the filtration unit 14. The two ends of the water channel are respectively connected to the outlet end of the pure water connecting pipe section 121 and the inlet end of the pure water outlet pipe section 122. The pure water flowing through the water channel exchanges heat with the hot water flowing through the heat exchange channel to form hot water, which is then output along the pure water outlet pipe section 122.

[0029] In this embodiment, the pure water filtered by the filtration module 1 is output through the pure water outlet unit 12; the heating tank unit 21 has a heating function and can exchange heat between the heated hot water and the room temperature pure water in the pure water outlet unit 12. The pure water flowing through the water channel and the hot water flowing through the heat exchange channel exchange heat to form hot water, which is then output along the pure water outlet pipe section 122. Users can take warm pure water from the pure water outlet unit 12 for drinking without additional heating, which greatly improves the user experience.

[0030] like Figure 1-3As shown, the heat exchange unit 22 includes a heat exchanger 221, a first circulation pipe section 222, and a second circulation pipe section 223; both the heat exchange channel and the water channel are located in the heat exchanger 221; the heat exchange channel has a circulating water inlet and a circulating water outlet; the hot tank unit 21 also includes a heater 212, which is located inside the hot tank 211 and is used to heat the water inside the hot tank 211; the inlet of the first circulation pipe section 222 is connected to the hot tank 211, and the first circulation pipe section 222... The outlet of 22 is connected to the inlet of the circulating water; the inlet of the second circulating pipe section 223 is connected to the outlet of the circulating water, and the outlet of the second circulating pipe section 223 is connected to the hot water tank 211; a circulating water pump 2231 is provided on the first circulating pipe section 222 or the second circulating pipe section 223; the water channel has a normal temperature water inlet and a hot water outlet, the outlet of the pure water connecting pipe section 121 is connected to the normal temperature water inlet, and the inlet of the pure water outlet pipe section 122 is connected to the hot water outlet.

[0031] In this embodiment, the hot tank unit 21 includes a hot tank 211 and a heater 212. The heater 212 is disposed inside the hot tank 211. The heater 212 can be a heating element or a heating plate, etc., which is not limited here. The water in the hot tank 211 is heated by the heater 212. A temperature probe 2111 and a water level detection element 2112 are disposed on the upper part of the hot tank 211. The temperature probe 2111 can detect the temperature of the hot water in the hot tank 211, and the water level detection element 2112 can detect the water level in the hot tank 211. The water level detection element 2112 can be a water level gauge or a float, etc. The outlet of the first circulation pipe section 222 is connected to the circulating water inlet of the heat exchanger 221, and the inlet of the second circulation pipe section 223 is connected to the circulating water outlet of the heat exchanger 221. The outlet of the second circulation pipe section 223 is also connected to the heat tank 211. When a user needs warm pure water, the room temperature pure water in the pure water connection pipe section 121 can be heated. Specifically, room temperature pure water is transported from the pure water connection pipe section 121 to the room temperature water inlet of the heat exchanger 221, and then enters the heat exchange channel of the heat exchanger 221. Meanwhile, the hot water in the heat tank 211 is transported to the heat exchanger 221 through the first circulation pipe. At the circulating water inlet of the heat exchanger 221, hot water enters another heat exchange channel of the heat exchanger 221. Room temperature pure water and hot water exchange heat in the heat exchanger 221 to raise the temperature of the room temperature pure water to warm pure water. The warm pure water after heat exchange is output from the hot water outlet of the heat exchanger 221 into the pure water outlet pipe section 122, and then output through the pure water outlet pipe section 122 for users to drink. The hot water after heat exchange is output from the circulating water outlet of the heat exchanger 221 and enters the second circulation pipe section 223, and then flows back to the heat tank 211 through the second circulation pipe section 223, completing the heat exchange and heating process of the room temperature pure water. A circulating water pump 2231 and a circulating valve 2232 are sequentially installed on the second circulation pipe section 223. The circulating valve is a solenoid valve, which facilitates the control of the opening and closing of the second circulation pipe section 223. The circulating water pump 2231 is installed on the second circulation pipe section 223. After the hot water in the heat tank 211 is cooled by heat exchanger 221, it is pumped into the heat tank 211 by the circulating water pump 2231. This can effectively prevent the water vapor generated by the hot water from affecting the power of the circulating water pump 2231 and improve the circulation capacity of the heat tank unit 21. In this way, the heating effect of the heat tank unit 21 on room temperature pure water can be greatly improved.

[0032] like Figure 1-3 As shown, in one embodiment, the hot tank unit 21 also includes an exhaust pipe section 213 and an air replenishment pipe section 214. Both the exhaust pipe section 213 and the air replenishment pipe section 214 are connected to the hot tank 211. The exhaust pipe section 213 and the air replenishment pipe section 214 are used to exhaust or replenish air in the hot tank 211 to ensure the air pressure balance in the hot tank 211.

[0033] like Figure 1-3As shown, the hot water delivery module 3 includes a first delivery pipe section 31; a first delivery valve 311 is provided on the first delivery pipe section 31; a second circulation pipe section 223 is also provided with a circulation valve 2232, and the circulation pump 2231 and the circulation valve 2232 are sequentially arranged in the second circulation pipe section 223 along the water flow delivery direction; the inlet end of the first delivery pipe section 31 is connected to the second circulation pipe section 223 and is located between the circulation pump 2231 and the circulation valve 2232, and the outlet end of the first delivery pipe section 31 is connected to the domestic water outlet unit 11; or the first circulation pipe section 222 is also provided with a circulation valve 2232, and the circulation pump 2231 and the circulation valve 2232 are sequentially arranged in the first circulation pipe section 222 along the water flow delivery direction, and the inlet end of the first delivery pipe section 31 is connected to the first circulation pipe section 222 and is located between the circulation pump 2231 and the circulation valve 2232.

[0034] In this embodiment, since the inlet end of the first conveying pipe section 31 is connected to the second circulation pipe section 223, and the inlet end of the first conveying pipe section 31 is located between the circulating water pump 2231 and the circulation valve 2232, and the outlet end of the first conveying pipe section 31 is connected to the domestic water outlet unit 11, when the user needs to use warm or room temperature water, a command to obtain warm or room temperature water is issued to the water purification equipment. At this time, the room temperature pure water in the pure water connection pipe section 121 is cut off from entering the heat exchanger 221, and the heat tank 211 in the heat tank 211 flows from the first circulation pipe section 222... The hot water enters heat exchanger 221 and then flows into the second circulation pipe section 223. Since no ambient temperature pure water enters heat exchanger 221, it only serves as a flow channel for hot water. The hot water entering the second circulation pipe section 223 is then transported to the first delivery pipe section 31, which in turn allows the hot water to enter the domestic water outlet unit 11 and mix with the ambient temperature domestic water in the domestic water outlet unit 11, thus raising the temperature of the ambient temperature domestic water to form warm domestic water, which is then output to users through the domestic water outlet unit 11. The first delivery pipe section 31 is sequentially equipped with a first delivery valve 311 and a first delivery check valve 312. The first delivery valve 311 is a solenoid valve that controls the opening and closing of the first delivery pipe section 31, and the first delivery check valve 312 prevents the domestic water in the domestic water outlet unit 11 from flowing back into the second circulation pipe section 223. When hot water from the hot water tank 211 is delivered to the domestic water outlet unit 11, the water level detected by the water level detection device 2112 in the hot water tank 211 drops. Since the inlet of the water supply pipe section 32 is connected to the pure water connection pipe section 121, and the inlet of the water supply pipe section 32 is located between the second flow regulating valve 1215 and the outlet of the pure water connection pipe section 121, and the outlet of the water supply pipe section 32 is connected to the hot water tank 211, a water supply valve 321 is provided on the water supply pipe section 32. The water supply valve 321 can be a solenoid valve. When the water supply valve 321 is opened, the room temperature pure water in the pure water connection pipe section 121 is delivered to the hot water tank 211 through the water supply pipe section 32 to replenish the water in the hot water tank 211 and prevent the water level in the hot water tank 211 from being too low.

[0035] like Figure 2As shown, the hot water delivery module 3 may also include a second delivery pipe section 33. The inlet end of the second delivery pipe section 33 is connected to the hot water tank 211, and the outlet end of the second delivery pipe section 33 is connected to the domestic water pipe section 111. A delivery pump 331 and a second delivery check valve 332 are sequentially installed on the second delivery pipe section 33. The hot water from the hot water tank 211 can be delivered to the domestic water pipe section 111 through the second delivery pipe section 33 under the action of the delivery pump 331, where it mixes with the room temperature domestic water in the domestic water pipe section 111 to raise the temperature of the room temperature domestic water and form warm domestic water. This warm domestic water is then output through the domestic water pipe section 111 for user use. The second delivery check valve 332 can prevent the domestic water in the domestic water pipe section 111 from flowing back into the hot water tank 211. In this water purification equipment, hot water can be delivered to the domestic water pipe section 111 through both the first delivery pipe section 31 and the second delivery pipe section 33, or only one of them can be used to deliver hot water to the domestic water pipe section 111.

[0036] like Figure 1-3 As shown, the heating module 2 further includes a heating unit 23; the heating unit 23 includes a parallel pipe section 231 and a heating element 232. The inlet end of the parallel pipe section 231 is connected to the pure water connecting pipe section 121, and the outlet end of the parallel pipe section 231 is connected to the pure water outlet pipe section 122. The heating element 232 is disposed on the pure water outlet pipe section 122, and the heating element 232 is located between the outlet end of the parallel pipe section 231 and the outlet end of the pure water outlet pipe section 122. A first heating valve 1216 is disposed on the pure water connecting pipe section 121, and a second heating valve 2311 is disposed on the parallel pipe section 231. The inlet end of the parallel pipe section 231 is located between the inlet end of the pure water connecting pipe section 121 and the first heating valve 1216.

[0037] In this embodiment, the inlet end of the parallel pipe section 231 is connected to the pure water connection pipe section 121, and the outlet end of the parallel pipe section 231 is connected to the pure water outlet pipe section 122. The heating element 232 is disposed on the pure water outlet pipe section 122, and the heating element 232 is located between the outlet end of the parallel pipe section 231 and the outlet end of the pure water outlet pipe section 122. The heating element 232 is a thick film heater. When the user needs to obtain warm pure water at different temperatures, the second flow regulating valve 1 is controlled. 215 allows room temperature pure water with different proportions to enter heat exchanger 221 and parallel pipe section 231. The room temperature pure water entering heat exchanger 221 is heated by heat exchange with hot water in hot tank 211 and then enters pure water outlet pipe section 122. It is then mixed with room temperature pure water in parallel pipe section 231. The temperature of the mixture reaches the target temperature before entering heating element 232. Finally, it is heated by heating element 232 and outputs warm pure water at the temperature required by the user from pure water outlet pipe section 122. It should be noted that the connection section between the parallel pipe section 231 and the pure water connection pipe section 121 and the heat exchanger 221 has a flow-blocking structure inside, so that the flow rate from the pure water connection pipe section 121 into the heat exchanger 221 and into the parallel pipe section 231 has a flow ratio. When the user needs to obtain warm pure water at different temperatures, the circulation efficiency of the circulating pump in the second flow regulating valve 1215 and the hot tank unit 21 can be adjusted so that the pure water after heat exchange from the heat exchanger 221 and the room temperature pure water in the parallel pipe section 231 are mixed to reach a specific temperature, and then the pure water at the temperature required by the user is heated and output through the heating element 232.

[0038] like Figure 1-3 As shown, the heating module 2 further includes a sterilization unit 24; the sterilization unit 24 includes a sterilization pipe section 241 and a sterilization pump 242. The water inlet of the sterilization pipe section 241 is connected to the heating tank unit 21, and the water outlet of the sterilization pipe section 241 is connected to the pure water outlet unit 12. The sterilization pump 242 is disposed on the sterilization pipe section 241 and is used to transport the hot water in the heating tank unit 21 along the sterilization pipe section 241 to the pure water outlet unit 12 to sterilize the pure water outlet unit 12 and / or the devices connected to the pure water outlet unit 12.

[0039] In this embodiment, the inlet end of the sterilization pipe section 241 is connected to the hot tank 211 of the hot tank unit 21, and the outlet end of the sterilization pipe section 241 is connected to the pure water connection pipe section 121 of the pure water unit 12. The outlet end of the sterilization pipe section 241 is located between the second detection element 1213 and the second flow regulating valve 1215. The sterilization pump 242 is installed on the sterilization pipe section 241. When the user needs to sterilize the water purification equipment, he / she sends a command to the water purification equipment, and the water purification equipment controls the sterilization pump 242. When started, the sterilization pump 242 pumps the high-temperature hot water in the hot tank 211 to the pure water connection pipe section 121, thereby achieving high-temperature sterilization of the pure water outlet unit 12 after the first flow regulating valve 1112 and / or the devices connected to the pure water outlet unit 12, ensuring the user's water safety. A sterilization check valve 2411 is provided on the sterilization pipe section 241, which can ensure that the hot water in the hot tank 211 can only flow into the pure water connection pipe section 121.

[0040] like Figure 1-3 As shown, the filtration module 1 further includes a water inlet unit 13 and a filtration unit 14; the water inlet unit 13 includes a water inlet pipe section 131, the water inlet end of which is connected to an external device; the filtration unit 14 includes a pre-filter element 141, a reverse osmosis filter element 142, a post-filter element 143, a first connecting pipe section 144, a second connecting pipe section 145, and a wastewater pipe section 146; the water outlet end of the water inlet pipe section 131 is connected to the water inlet end of the pre-filter element 141; the water inlet end of the first connecting pipe section 144 is connected to the water outlet end of the pre-filter element 141, and the water outlet end of the first connecting pipe section 144 is connected to the water inlet end of the reverse osmosis filter element 142; a valve body 1441 and a booster pump 1442 are sequentially arranged on the first connecting pipe section 144. The inlet end of the second connecting pipe section 145 is connected to the outlet end of the reverse osmosis filter element 142, and the outlet end of the post-filter element 143 is used to output pure water. The outlet end of the second connecting pipe section 145 is connected to the inlet end of the post-filter element 143. The inlet end of the pure water outlet unit 12 is connected to the outlet end of the post-filter element 143. The inlet end of the wastewater pipe section 146 is connected to the wastewater end of the reverse osmosis filter element 142. The wastewater pipe section 146 is sequentially provided with a first detection element 1461 and a wastewater valve 1462. The inlet end of the domestic water outlet unit 11 is connected to the first connecting pipe section 144, and the inlet end of the domestic water outlet unit 11 is located between the inlet end of the first connecting pipe section 144 and the valve body 1441.

[0041] In this embodiment, tap water is input into the water inlet unit 13. The tap water is filtered by the pre-filter cartridge 141 after passing through the water inlet unit 13 to form domestic water. Specifically, the water inlet unit 13 includes a water inlet pipe section 131. The water inlet end of the water inlet pipe section 131 is connected to an external device, which can be a municipal water supply device. A solenoid valve can be installed on the water inlet pipe section 131 to control the connection of the water inlet pipe section 131, that is, to control the water supply device to send the tap water through the water inlet pipe section 131 to the filter module 1 for filtration. It should be noted that the pre-filter cartridge 141 is a PPC filter cartridge. The domestic water formed after the tap water input into the water inlet pipe section 131 is filtered by the pre-filter cartridge 141 can be used by users to wash fruits and vegetables, dishes, etc. The inlet end of the first connecting pipe section 144 is connected to the outlet end of the pre-filter 141, and the outlet end of the first connecting pipe section 144 is connected to the inlet end of the reverse osmosis filter 142. The inlet end of the second connecting pipe section 145 is connected to the pure water end of the reverse osmosis filter 142, and the outlet end of the second connecting pipe section 145 is connected to the inlet end of the post-filter 143. The inlet end of the pure water outlet unit 12 is connected to the outlet end of the post-filter 143. The inlet end of the wastewater pipe section 146 is connected to the wastewater end of the reverse osmosis filter 142. The tap water filtered by the pre-filter 141 forms domestic water, which is then transported to the reverse osmosis filter 142 via the first connecting pipe section 144. After being filtered by the reverse osmosis filter 142, the domestic water outputs pure water at the pure water end of the reverse osmosis filter 142. The product generated after reverse osmosis filtration... Wastewater is discharged through the wastewater end into wastewater pipe section 146, and then discharged to the outside, such as into the sewer. Wastewater pipe section 146 is equipped with a first detection element 1461 and a wastewater valve 1462. The first detection element 1461 can be a TDS probe to detect the TDS value of the discharged wastewater. Wastewater valve 1462 can be a solenoid valve to facilitate the control of the opening and closing of wastewater pipe section 146. The pure water formed after filtration by reverse osmosis filter element 142 enters the second connecting pipe section 145 and then enters the post-filter element 143. The post-filter element 143 can be a PPC filter element. After further filtration by the post-filter element 143, the pure water enters the pure water outlet unit 12 for users to drink directly. For example, it can be directly output for drinking through the faucet, or it can be output for drinking after being heated, cooled, or made into ice.A valve body 1441 and a booster pump 1442 are sequentially installed on the first connecting pipe section 144. The inlet end of the domestic water outlet unit 11 is connected to the first connecting pipe section 144, and the inlet end of the domestic water outlet unit 11 is located between the inlet end of the first connecting pipe section 144 and the valve body 1441. The valve body 1441 can be a solenoid valve to control the opening and closing of the first connecting pipe section 144. When the user only needs to output domestic water, the valve body 1441 is closed, and tap water is transported to the pre-filter 141 for filtration through the inlet pipe section 131. Domestic water is formed and enters the first connecting pipe section 144. Since the valve body 1441 on the first connecting pipe section 144 is closed and the domestic water outlet unit 11 is in a connected state, the domestic water cannot be delivered to the reverse osmosis filter element 142, but can only be output through the domestic water outlet unit 11 for user use. When the user needs to output pure water, the valve body 1441 is opened, and the booster pump 1442 can pump the domestic water to the reverse osmosis filter element 142 for filtration, forming pure water which is output through the pure water outlet unit 12 for user drinking.

[0042] like Figure 1-3 As shown, the filtration module 1 further includes a first return pipe section 15; the inlet end of the first return pipe section 15 is connected to the wastewater pipe section 146, and the outlet end of the first return pipe section 15 is connected to the first connecting pipe section 144; the inlet end of the first return pipe section 15 is located between the inlet end of the wastewater pipe section 146 and the first detection element 1461, and the outlet end of the first return pipe section 15 is located between the valve body 1441 and the booster pump 1442; a first return valve 151 and a first return check valve 152 are sequentially arranged on the first return pipe section 15.

[0043] It should be noted that when users need to obtain a large flow of pure water, the outlet end of the pure water outlet unit 12 needs to be pressurized, that is, the pure water end of the reverse osmosis filter element 142 has a large pressure. The TDS value of the wastewater discharged from the wastewater end when the reverse osmosis filter element 142 is filtered is often relatively low. If it is directly discharged through the wastewater pipe section 146, it will cause a waste of water resources. Therefore, in this embodiment, the inlet end of the first return pipe section 15 is connected to the wastewater pipe section 146, and the outlet end of the first return pipe section 15 is connected to the first connecting pipe section 144. The inlet end of the first return pipe section 15 is located between the inlet end of the wastewater pipe section 146 and the first detection element 1461. The outlet end of the first return pipe section 15 is located between the valve body 1441 and the booster pump 1442. When the pure water outlet unit 12 is pressurized, the wastewater valve 1462 of the wastewater pipe section 146 is closed, and the wastewater end of the reverse osmosis filter element 142 is connected to the first return pipe section 15. The TDS generated at the wastewater end of the reverse osmosis filter element 142... Wastewater with low TDS values ​​is returned to the first connecting pipe section 144 through the first return pipe section 15 under the action of the booster pump 1442, and then pumped into the reverse osmosis filter element 142 for filtration. In this way, the wastewater with low TDS values ​​can be effectively returned through the first return pipe section 15 to avoid waste of water resources. The first return pipe section 15 is equipped with a first return valve 151 and a first return check valve 152 in sequence. The first return valve 151 can be a solenoid valve to facilitate the control of the opening and closing of the first return pipe section 15. The first return check valve 152 ensures that the wastewater in the wastewater pipe section 146 can only flow to the first connecting pipe section 144.

[0044] When the water purification equipment is not used for a period of time, due to the osmotic pressure, ions in the reverse osmosis filter 142 permeate to the pure water end of the reverse osmosis filter 142, resulting in a portion of the water at the outlet of the reverse osmosis filter 142 having a high TDS value. This portion of water is defined as stale water. As one embodiment, the filtration module 1 also includes a second return pipe section 16. The inlet end of the second return pipe section 16 is connected to the pure water outlet unit 12, and the outlet end of the second return pipe section 16 is connected to the inlet pipe section 131. When the water purification equipment is used again, this portion of water with a high TDS value flows back to the inlet pipe section 131 through the second return pipe section 16, and is then re-filtered through the pre-filter 141, reverse osmosis filter 142, and post-filter 143. In this way, the problem of high TDS in the first cup of water when the water purification equipment is used again can be solved, ensuring zero stale water and guaranteeing the user's water safety. In addition, a second reflux valve 161 and a second reflux check valve 162 are installed on the second reflux pipe section. The second reflux valve 161 can be a solenoid valve. The second reflux valve 161 is used to open and close the second reflux pipe section 16, thereby controlling the reflux of stale water. The second reflux check valve 162 is installed on the second reflux pipe section 16. The second reflux check valve 162 controls the direction of water flow on the second reflux pipe section 16. That is, stale water can only flow through the second reflux pipe section 16 to the inlet pipe section 131, and cannot flow in the opposite direction, so as to avoid mixing of stale water and pure water, thereby preventing the output pure water TDS from being too high.

[0045] like Figure 1-3 As shown, the domestic water outlet unit 11 includes a domestic water pipe section 111; the inlet end of the domestic water pipe section 111 is connected to the first connecting pipe section 144, and the inlet end of the domestic water pipe section 111 is located between the inlet end of the first connecting pipe section 144 and the valve body 1441; a domestic water valve 1111, a first flow regulating valve 1112 and a sterilization module 1113 are sequentially arranged on the domestic water pipe section 111.

[0046] In this embodiment, the inlet end of the domestic water pipe section 111 is connected to the first connecting pipe section 144, and the inlet end of the domestic water pipe section 111 is located between the inlet end of the first connecting pipe section 144 and the valve body 1441. When the user needs to output domestic water, tap water enters the inlet pipe section 131 and is transported to the pre-filter 141 through the inlet pipe section 131. The valve body 1441 of the first connecting pipe section 144 is closed, and the outlet end of the domestic water pipe section 111 and the pre-filter 141 are connected. The domestic water filtered by the pre-filter 141 enters the domestic water pipe section 111 and is then output through the domestic water pipe section 111 for the user's use. A domestic water pipe section 111 is sequentially equipped with a domestic water valve 1111, a first flow regulating valve 1112, and a sterilization module 1113. The domestic water valve 1111 is a solenoid valve for convenient control of the on / off state of the domestic water pipe section 111. The first flow regulating valve 1112 and the sterilization module 1113 are installed on the domestic water pipe section 111. As one embodiment, the sterilization module 1113 is an electrolytic sterilization module 1113, which uses the principle of electrolysis to generate sterilizing substances. For example, ozone and hydroxyl radicals are generated through electrolysis between electrodes in the water, or hypochlorous acid is formed through electrolysis and hydrolysis. The sterilization module 1113 electrolyzes the flowing tap water. The tap water contains one of the bactericidal substances, such as ozone, hydroxyl groups, or hypochlorous acid. Of course, tap water can also contain multiple bactericidal substances, depending on the actual situation, and is not limited here. The sterilization module 1113 prepares bactericidal substances for the flowing domestic water, meaning the output domestic water contains bactericidal substances to give it a sterilization function. When fruits and vegetables need to be washed, the domestic water containing bactericidal substances rinses and soaks them, further disinfecting bacteria on the surface of the fruits and vegetables, ensuring they are clean and free of pesticide and bacterial residues, thus guaranteeing the user's food safety. The flow rate of water in the domestic water pipe section 111 is adjusted by regulating the first flow regulating valve 1112 to regulate the concentration of the bactericidal substances in the output domestic water, ensuring a suitable concentration and avoiding excessively high concentrations (resulting in a strong odor) or insufficient concentrations (resulting in ineffective sterilization).

[0047] like Figure 1-3 As shown, the pure water outlet unit 12 includes a pure water connecting pipe section 121 and a pure water outlet pipe section 122; the inlet end of the pure water connecting pipe section 121 is connected to the outlet end of the post-filter cartridge 143, and the outlet end of the pure water connecting pipe section 121 is connected to the inlet end of the heating module 2; the inlet end of the pure water outlet pipe section 122 is connected to the outlet end of the heating module 2; a pure water one-way valve 1211, a flow meter 1212, a second detection element 1213, a pressure reducing valve 1214, and a second flow regulating valve 1215 are sequentially arranged on the pure water connecting pipe section 121.

[0048] In this embodiment, the inlet end of the pure water connecting pipe section 121 is connected to the outlet end of the post-filter cartridge 143, the outlet end of the pure water connecting pipe section 121 is connected to the inlet end of the heating module 2, and the inlet end of the pure water outlet pipe section 122 is connected to the outlet end of the heating module 2. When the user needs to obtain warm pure water, tap water enters the inlet pipe section 131 and passes through the pre-filter cartridge 141, the first connecting pipe section 144, the reverse osmosis filter cartridge 142, the second connecting pipe section 145, and the post-filter cartridge 143 in sequence. Pure water enters the pure water connecting pipe section 121 from the outlet end of the post-filter cartridge 143. The pure water is then transported to the heating module 2 through the pure water connecting pipe section 121. The heating module 2 heats the pure water to form warm pure water, which is then output through the pure water outlet connecting pipe section for the user to drink directly. The pure water connection pipe section 121 is sequentially equipped with a pure water check valve 1211, a flow meter 1212, a second detection element 1213, a pressure reducing valve 1214, and a second flow regulating valve 1215. The pure water check valve 1211 ensures that pure water can only flow towards the heating module 2 within the pure water connection pipe section 121 and cannot flow back in the opposite direction. The flow meter 1212 can detect the flow rate of pure water within the pure water connection pipe section 121. The second detection element 1213 can be a TDS probe to detect the TDS value of pure water within the pure water connection pipe section 121, ensuring the safety of pure water quality. The pressure reducing valve 1214 can relieve pressure in the pure water connection pipe section 121 to prevent excessive pressure within the pure water connection pipe section 121. The second flow regulating valve 1215 can control the flow rate of pure water flowing into the heating module 2.

[0049] like Figure 1-3 As shown in the illustration, in one embodiment, the pure water outlet unit 12 also includes a room temperature water outlet pipe section. The inlet pipe of the room temperature water outlet pipe section is connected to the pure water connecting pipe section 121, and the inlet end of the room temperature water outlet pipe section is located between the second detection element 1213 and the second flow regulating valve 1215. Pure water filtered by the post-filter cartridge 143 enters the pure water connecting pipe section 121 through the room temperature water outlet pipe section, and is then transported to the room temperature water outlet pipe section. Finally, room temperature pure water for drinking is output through the room temperature water outlet pipe section, providing users with different pure water options and improving the user experience. A room temperature water valve, which can be a solenoid valve, is installed on the room temperature water outlet pipe section to control the on / off state of the room temperature water outlet pipe section.

[0050] like Figure 1-3As shown in the figure, in one embodiment, the water purification equipment also includes a water dispenser module 4. The water dispenser module 4 includes a water dispenser 41 and a water dispenser outlet pipe section 42. The inlet end of the water dispenser outlet pipe section 42 is connected to the pure water connection pipe section 121, and the inlet end of the water dispenser outlet pipe section 42 is located behind the second detection element 1213. The outlet end of the water dispenser outlet pipe section 42 is connected to the water dispenser 41. A water dispenser check valve 411 and a high-pressure switch 412 are sequentially arranged on the water dispenser outlet pipe section 42. The water dispenser 41 controls the on / off state of the water outlet section 42 via a high-pressure switch 412. When the water dispenser 41 is turned on, there is a pressure difference between the front and rear ends of the high-pressure switch 412, and the high-pressure switch 412 is turned on, that is, the water outlet section 42 of the water dispenser is connected. Room temperature pure water flows from the pure water connection section 121 into the water outlet section 42 of the water dispenser, and finally outputs from the water dispenser 41, realizing the water intake of the water dispenser 41. A one-way valve 411 is installed on the water outlet section 42 of the water dispenser to control the direction of water flow on the water outlet section 42 of the water dispenser, which can only flow into the water dispenser 41 and cannot flow in the opposite direction.

[0051] like Figure 1-3 As shown in the illustration, in one embodiment, the water purification equipment also includes a water outlet component 5. The water outlets of the domestic water pipe section 111, the ambient temperature water pipe section, and the pure water pipe section 122 are all located within the water outlet component 5. The water outlet component 5 can be a faucet, integrating the outlets for domestic water, ambient temperature water, and warm / hot pure water into the faucet, allowing for the output of different types of water with a single faucet. Of course, when the outlet of the pure water connecting pipe section 121 is connected to a refrigeration or ice-making device, the outlet of the refrigeration or ice-making device can also be integrated into the faucet, enabling the faucet to output domestic water, ambient temperature pure water, hot pure water, and cold pure water, thus greatly improving convenience.

[0052] Example 2: This embodiment provides a control method for a water purification device with hot and cold water functions, applicable to the water purification device of Embodiment 1. The control method includes the following steps: S100: Receives user commands to retrieve hot water.

[0053] Specifically, users can send instructions to request hot or warm domestic water through the control panel on the water purifier.

[0054] S200: Controls the output of domestic water from the domestic water outlet unit 11 of the filter module 1.

[0055] Specifically, the water purification equipment controls the operation of the filter module 1 through its control module. Tap water enters the pre-filter 141 through the inlet pipe section 131. After being filtered by the pre-filter 141, it forms domestic water, which enters the domestic water pipe section 111.

[0056] S300: Control the closure of the first heating valve 1216, the second heating valve 2311 and the circulation valve 2232, start the circulation pump and the first delivery valve 311, and deliver the hot water in the hot tank 211 to the domestic water pipe section 111 through the second circulation pipe section 223 and the first delivery pipe section 31; and / or, control the closure of the first heating valve 1216, the second heating valve 2311 and the circulation valve 2232, start the delivery pump 331, and deliver the hot water in the hot tank 211 to the domestic water pipe section through the second delivery pipe section 33.

[0057] Specifically, the water purification equipment controls the closure of the first heating valve 1216, the second heating valve 2311, and the circulation valve 2232 via its control module, and starts the circulation pump and the first delivery valve 311 to transport the high-temperature hot water in the hot tank 211 to the domestic water pipe section 111 through the second circulation pipe section 223 and the first delivery pipe section 31; or, the control module controls the closure of the first heating valve 1216, the second heating valve 2311, and the circulation valve 2232, and starts the delivery pump 331 to transport the hot water in the hot tank 211 to the domestic water pipe section through the second delivery pipe section 33; the high-temperature hot water entering the domestic water pipe section 111 mixes with the room-temperature domestic water to raise the temperature of the domestic water in the domestic water pipe section 111, and then outputs it to users through the domestic water pipe section 111 to achieve the output of warm domestic water.

[0058] S400: When the hot water in the hot tank 211 drops to the preset water level, the pure water outlet unit 12 of the control filter module 1 outputs pure water, closes the first heating valve 1216, the second heating valve 2311 and the circulation valve 2232, starts the water supply valve 321, and replenishes the pure water from the pure water outlet unit 12 into the hot tank 211 through the pure water connection pipe section 121 and the water supply pipe section 32, and starts the heater 212 to heat the pure water in the hot tank 211.

[0059] When the water level detection device 2112 in the hot tank 211 detects that the water level in the hot tank 211 is lower than the preset water level, the control module of the water purification equipment controls the pure water outlet unit 12 of the filter module 1 to output pure water, close the first heating valve 1216, the second heating valve 2311 and the circulation valve 2232, and start the water supply valve 321 to replenish the pure water in the hot tank 211 through the pure water connection pipe section 121 and the water supply pipe section 32 to replenish the water in the hot tank 211 and prevent the water level in the hot tank 211 from being too low. Then, the heater 212 is started to heat the pure water in the hot tank 211 to ensure that warm water can be continuously output to the user.

[0060] This embodiment utilizes a control method for water purification equipment. Users can send a command to the water purification equipment to request hot water, and the equipment will then output warm domestic water for the user's use, greatly improving the user experience.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A water purification device with hot and cold water functions, characterized in that, The utility model relates to a water heating and mixing device, which comprises: a filtering module (1) comprising a filtering unit (14) and a domestic water outlet unit (11) in communication with the filtering unit (14) and used for outputting domestic water filtered by the filtering unit (14); a heating module (2) comprising a hot tank unit (21) used for storing and heating water; a hot water conveying module (3) in communication with the hot tank unit (21) and the domestic water outlet unit (11) and used for conveying hot water in the hot tank unit (21) to the domestic water outlet unit (11) so that the hot water and the domestic water are mixed in the domestic water outlet unit (11) to form warm water and are outputted.

2. The water purifying apparatus having a warm water function according to claim 1, wherein The hot water conveying module (3) comprises a second conveying pipe section (33); the hot tank unit (21) comprises a hot tank (211); a water inlet end of the second conveying pipe section (33) is in communication with the hot tank (211), a water outlet end of the second conveying pipe section (33) is in communication with the domestic water outlet unit (11), and a conveying pump (331) is arranged on the second conveying pipe section (33); and / or the hot water conveying module (3) comprises a water supplementing pipe section (32); a water inlet end of the water supplementing pipe section (32) is in communication with a domestic water outlet end of the filtering unit (14) or a purified water outlet end of the filtering unit (14), a water outlet end of the water supplementing pipe section (32) is in communication with the hot tank (211), and the water supplementing pipe section (32) is used for supplementing water to the hot tank (211); a water supplementing valve (321) is arranged on the water supplementing pipe section (32).

3. The water purifying apparatus having a warm water function according to claim 1, wherein The heating module (2) further comprises a heat exchange unit (22) having a heat exchange flow channel and a water flow channel; the hot tank unit (21) is in communication with the heat exchange flow channel and is used for providing hot water to the heat exchange flow channel; The filtering module (1) further comprises a purified water outlet unit (12); the purified water outlet unit (12) comprises a purified water connecting pipe section (121) and a purified water outlet pipe section (122); a water inlet end of the purified water connecting pipe section (121) is in communication with a purified water outlet end of the filtering unit (14) and is used for conveying purified water filtered by the filtering unit (14); two ends of the water flow channel are respectively in communication with a water outlet end of the purified water connecting pipe section (121) and a water inlet end of the purified water outlet pipe section (122); purified water flowing through the water flow channel and hot water flowing through the heat exchange flow channel are heat exchanged to form hot water and are outputted along the purified water outlet pipe section (122).

4. The water purifying apparatus having a warm water function according to claim 3, wherein The heat exchange unit (22) comprises a heat exchanger (221), a first circulating pipe section (222), and a second circulating pipe section (223); the heat exchange flow channel and the water flow channel are arranged in the heat exchanger (221). The heat exchange channel has a circulating water inlet end and a circulating water outlet end; the hot tank unit (21) further comprises a heater (212) arranged in the hot tank (211), and the heater (212) is used for heating water in the hot tank (211); the water inlet end of the first circulating pipe section (222) is in communication with the hot tank (211), and the water outlet end of the first circulating pipe section (222) is in communication with the circulating water inlet end; the water inlet end of the second circulating pipe section (223) is in communication with the circulating water outlet end, and the water outlet end of the second circulating pipe section (223) is in communication with the hot tank (211); the first circulating pipe section (222) or the second circulating pipe section (223) is provided with a circulating water pump (2231). The water channel has a normal-temperature water inlet end and a hot water outlet end, the water outlet end of the pure water connecting pipe section (121) is in communication with the normal-temperature water inlet end, and the water inlet end of the pure water outlet pipe section (122) is in communication with the hot water outlet end.

5. The water purifying apparatus having a warm water function according to claim 4, wherein The hot water conveying module (3) comprises a first conveying pipe section (31); the first conveying pipe section (31) is provided with a first conveying valve (311); The second circulating pipe section (223) is further provided with a circulating valve (2232), and the circulating water pump (2231) and the circulating valve (2232) are sequentially arranged in the second circulating pipe section (223) along the water flow conveying direction; the water inlet end of the first conveying pipe section (31) is in communication with the second circulating pipe section (223) and located between the circulating water pump (2231) and the circulating valve (2232), and the water outlet end of the first conveying pipe section (31) is in communication with the domestic water outlet unit (11). Or the first circulating pipe section (222) is further provided with a circulating valve (2232), and the circulating water pump (2231) and the circulating valve (2232) are sequentially arranged in the first circulating pipe section (222) along the water flow conveying direction, and the water inlet end of the first conveying pipe section (31) is in communication with the first circulating pipe section (222) and located between the circulating water pump (2231) and the circulating valve (2232).

6. The water purifying apparatus having a warm water function according to claim 3, wherein The heating module (2) further comprises a heating unit (23); The heating unit (23) comprises a parallel pipe section (231) and a heating piece (232), the water inlet end of the parallel pipe section (231) is in communication with the pure water connecting pipe section (121), the water outlet end of the parallel pipe section (231) is in communication with the pure water outlet pipe section (122), the heating piece (232) is arranged on the pure water outlet pipe section (122), and the heating piece (232) is located between the water outlet end of the parallel pipe section (231) and the water outlet end of the pure water outlet pipe section (122). A first heating valve (1216) is arranged on the pure water connecting pipe section (121), a second heating valve (2311) is arranged on the parallel pipe section (231), and the water inlet end of the parallel pipe section (231) is located between the water inlet end of the pure water connecting pipe section (121) and the first heating valve (1216).

7. The water purifying apparatus having a warm water function according to claim 3, wherein The heating module (2) further comprises a sterilization unit (24); The sterilization unit (24) comprises a sterilization pipe section (241) and a sterilization pump (242), the water inlet end of the sterilization pipe section (241) is in communication with the hot tank unit (21), the water outlet end of the sterilization pipe section (241) is in communication with the pure water outlet unit (12), and the sterilization pump (242) is arranged on the sterilization pipe section (241) and used to deliver the hot water in the hot tank unit (21) along the sterilization pipe section (241) to the pure water outlet unit (12) to sterilize the pure water outlet unit (12) and / or a device in communication with the pure water outlet unit (12).

8. The water purifying apparatus having a hot water function according to any one of claims 1 to 7, characterized by The filter module (1) further comprises a water inlet unit (13); the water inlet unit (13) comprises a water inlet pipe section (131), and the water inlet end of the water inlet pipe section (131) is in communication with an external device; The filter unit (14) comprises a pre-filter core (141), a reverse osmosis filter core (142), a post-filter core (143), a first connecting pipe section (144), a second connecting pipe section (145), and a waste water pipe section (146); The water outlet end of the water inlet pipe section (131) is in communication with the water inlet end of the pre-filter core (141); the water inlet end of the first connecting pipe section (144) is in communication with the water outlet end of the pre-filter core (141), the water outlet end of the first connecting pipe section (144) is in communication with the water inlet end of the reverse osmosis filter core (142), and a valve body (1441) and a booster pump (1442) are sequentially arranged on the first connecting pipe section (144); The water inlet end of the second connecting pipe section (145) is in communication with the water outlet end of the reverse osmosis filter core (142), the water outlet end of the second connecting pipe section (145) is in communication with the water inlet end of the post-filter core (143), and the water outlet end of the post-filter core (143) is used to output pure water; The water inlet end of the waste water pipe section (146) is in communication with the waste water end of the reverse osmosis filter core (142), and a first detection member (1461) and a waste water valve (1462) are sequentially arranged on the waste water pipe section (146); The water inlet end of the domestic water outlet unit (11) is in communication with the first connecting pipe section (144), and the water inlet end of the domestic water outlet unit (11) is located between the water inlet end of the first connecting pipe section (144) and the valve body (1441); The domestic water outlet unit (11) comprises a domestic water pipe section (111); The water inlet end of the domestic water pipe section (111) is in communication with the filter unit (14), and a domestic water valve (1111), a first flow regulating valve (1112), and a sterilization module (1113) are sequentially arranged on the domestic water pipe section (111).

9. The water purifying apparatus having a warm water function according to claim 8, wherein The filter module (1) further comprises a first backflow pipe section (15); The water inlet end of the first backflow pipe section (15) is communicated with the wastewater pipe section (146), and the water outlet end of the first backflow pipe section (15) is communicated with the first connecting pipe section (144); the water inlet end of the first backflow pipe section (15) is located between the water inlet end of the wastewater pipe section (146) and the first detection member (1461), and the water outlet end of the first backflow pipe section (15) is located between the valve body (1441) and the booster pump (1442); the first backflow pipe section (15) is sequentially provided with a first backflow valve (151) and a first backflow check valve (152).

10. A control method of a water purifying apparatus having a warm water function, characterized by, The water purification device according to any one of claims 1-9, the control method comprising the following steps: receiving a user instruction to take warm domestic water; controlling the domestic water outlet unit (11) of the filter module (1) to output domestic water; controlling the first heating valve (1216), the second heating valve (2311) and the circulation valve (2232) to be closed, and the circulation pump and the first delivery valve (311) to be started, so that the hot water in the hot tank (211) is delivered into the domestic water pipe section (111) through the second circulation pipe section (223) and the first delivery pipe section (31); and / or, controlling the first heating valve (1216), the second heating valve (2311) and the circulation valve (2232) to be closed, and the delivery pump (331) to be started, so that the hot water in the hot tank (211) is delivered into the domestic water pipe section through the second delivery pipe section (33); when the hot water in the hot tank (211) falls to a preset water level, controlling the pure water outlet unit (12) of the filter module (1) to output pure water, controlling the first heating valve (1216), the second heating valve (2311) and the circulation valve (2232) to be closed, and controlling the water replenishing valve (321) to be started, so that the pure water of the pure water outlet unit (12) is replenished into the hot tank (211) through the pure water connecting pipe section (121) and the water replenishing pipe section (32), and the heater (212) is started to heat the pure water in the hot tank (211).

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