Water drinking equipment

Abstract

The invention relates to the technical field of water purification equipment, particularly provides water drinking equipment, and aims to solve the problems of complex structure and poor effect of a waterway sterilization scheme in existing water drinking equipment. In order to achieve the purpose, the drinking equipment comprises a pure water tank, a hot water pipeline, a cold water pipeline, a water taking pipe and a hot water backflow pipeline. Two ends of the hot water pipeline are respectively communicated with a water outlet of the pure water tank and the water taking pipe, and a heating device is arranged on the hot water pipeline to heat water flow; two ends of the cold water pipeline are respectively communicated with a water outlet of the pure water tank and the water taking pipe; one end of the hot water return pipeline is communicated with the water outlet of the heating device, and the other end of the hot water return pipeline is communicated with the hot water return port of the pure water tank and / or the cold water pipeline, so that the heated water flow is guided into the pure water tank and / or the cold water pipeline for high-temperature sterilization. Therefore, high-temperature sterilization can be carried out on the pure water tank and different pipelines of the water purification equipment according to needs, the sterilization structure is simplified, and the sterilization effect is improved.

Description

Technical Field

[0001] This invention relates to the field of water purification equipment technology, and specifically provides a drinking water device. Background Technology

[0002] With the advancement of technology and the improvement of people's living standards, various drinking water equipment has been rapidly developed and popularized, and its functions have been continuously enriched. For example, by integrating multiple functional modules into drinking water equipment, purified water of different purities and temperatures can be produced to meet the increasingly diverse water needs of users.

[0003] However, bacteria can easily grow in the internal water circuits of drinking water equipment, and existing water circuit disinfection solutions suffer from problems such as complex structure and incomplete disinfection.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, the existing water disinfection schemes in drinking water equipment are complex in structure and have poor effect.

[0006] This invention provides a drinking water device, comprising a pure water tank, a hot water pipeline, a cold water pipeline, a water intake pipe, and a hot water return pipeline. The two ends of the hot water pipeline are respectively connected to the outlet of the pure water tank and the water intake pipe, and a heating device is installed on the hot water pipeline to heat the water flow. The two ends of the cold water pipeline are respectively directly or indirectly connected to the outlet of the pure water tank and the water intake pipe. One end of the hot water return pipeline is connected to the outlet of the heating device, and the other end of the hot water return pipeline is connected to the hot water return port of the pure water tank and / or the cold water pipeline, so as to guide the heated water flow into the pure water tank and / or the cold water pipeline for high-temperature sterilization.

[0007] In the preferred embodiment of the above-mentioned drinking water equipment, the drinking water equipment further includes a cold water tank and a refrigeration device. The refrigeration device and the cold water tank form a circulating water circuit. The refrigeration device can cool the circulating water flow to produce ice cubes and / or ice water. The inlet of the cold water tank is connected to the outlet of the pure water tank. The outlet of the cold water tank is connected to the water intake pipe through the cold water pipeline. During the disinfection process, heated water can be introduced into the cold water tank and the refrigeration device for high-temperature sterilization.

[0008] In the preferred embodiment of the above-mentioned drinking water equipment, the refrigeration device includes a heat exchange component, a refrigeration component, a circulation pipeline, and a circulation pump. The two ends of the circulation pipeline are respectively connected to the cold water tank and the heat exchange component. The circulation pump is installed on the circulation pipeline. The heat exchange component is heat-exchange connected to the refrigeration component. The heat exchange component can absorb the cold energy generated by the heat exchange component to cool the circulating water flowing through the refrigeration component to produce ice cubes and / or ice water.

[0009] In the preferred embodiment of the above-mentioned drinking water equipment, the drinking water equipment further includes a water purification device, the inlet of which is directly or indirectly connected to an external water source, and the outlet of which is connected to the inlet of the pure water tank.

[0010] In the preferred technical solution of the above-mentioned drinking water equipment, the water purification device includes a booster pump and a reverse osmosis filter. The reverse osmosis filter includes a raw water inlet, a pure water inlet, and a wastewater inlet. The inlet of the booster pump is directly or indirectly connected to an external water source. The outlet of the booster pump is connected to the raw water inlet. The pure water inlet is directly or indirectly connected to the inlet of the pure water tank. The wastewater inlet is connected to the external space.

[0011] In the preferred embodiment of the above-mentioned drinking water equipment, the water purification device further includes a pre-filter, the inlet of which is connected to an external water source, and the outlet of which is connected to the inlet of the booster pump; and / or the water purification device further includes a post-filter, the inlet of which is connected to the pure water outlet, and the outlet of which is connected to the inlet of the pure water tank.

[0012] In the preferred technical solution of the above-mentioned drinking water equipment, the water purification device further includes a pure water return pipeline and an overflow valve. The inlet of the pure water return pipeline is connected to the outlet of the post-filter, the outlet of the pure water return pipeline is connected to the inlet of the booster pump, and the overflow valve is installed on the pure water return pipeline.

[0013] In the preferred embodiment of the above-mentioned drinking water equipment, the drinking water equipment further includes a raw water tank, the inlet of which is connected to an external water source, and the outlet of which is connected to the inlet of the booster pump.

[0014] In the preferred embodiment of the above-mentioned drinking water equipment, the drinking water equipment further includes a cold water return pipeline, the inlet of which is connected to the cold water return port of the cold water tank, and the outlet of which is connected to the return port of the raw water tank.

[0015] In the preferred technical solution of the above-mentioned drinking water equipment, the water purification device further includes a wastewater return pipeline, the inlet of which is connected to the wastewater outlet, and the outlet of which is connected to the return outlet of the raw water tank.

[0016] With the above technical solution adopted, the drinking water equipment of the present invention includes a pure water tank, a hot water pipeline, a cold water pipeline, a water intake pipe, and a hot water return pipeline. Both ends of the hot water pipeline are connected to the outlet of the pure water tank and the water intake pipe, respectively, and a heating device is installed on the hot water pipeline to heat the water flow. Both ends of the cold water pipeline are directly or indirectly connected to the outlet of the pure water tank and the water intake pipe, respectively. One end of the hot water return pipeline is connected to the outlet of the heating device, and the other end of the hot water return pipeline is connected to the hot water return port of the pure water tank and / or the cold water pipeline, so as to introduce the heated water flow into the pure water tank and / or the cold water pipeline for high-temperature sterilization. Through this arrangement, on the one hand, the mixing of cold and hot water is achieved to produce water flow at different temperatures; on the other hand, the hot water return pipeline allows hot water from the hot water pipeline to be introduced into the pure water tank and / or the cold water pipeline when sterilization is required, achieving high-temperature sterilization of the cold water tank and different pipelines.

[0017] Furthermore, the drinking water device of the present invention also includes a cold water tank and a refrigeration device. The refrigeration device and the cold water tank form a circulating water circuit. The refrigeration device can cool the circulating water flow to produce ice and / or ice water. The inlet of the cold water tank is connected to the outlet of the pure water tank, and the outlet of the cold water tank is connected to the water intake pipe through a cold water pipeline. During the disinfection process, heated water can be introduced into the cold water tank and the refrigeration device for high-temperature sterilization. With this configuration, on the one hand, the water storage function of the cold water tank can meet the water demand of the refrigeration device for ice making; on the other hand, the ice water produced during the ice making process can be recycled to achieve the mixing of ice water and hot water, further increasing the temperature adjustment range at the water intake to meet different user water temperature requirements; furthermore, during the disinfection process, heated water can be simultaneously introduced into the cold water tank, and the water flow can circulate between the refrigeration device and the cold water tank to perform high-temperature sterilization on the refrigeration device.

[0018] Furthermore, the refrigeration device of the present invention includes a heat exchange component, a refrigeration component, a circulation pipeline, and a circulation pump. The two ends of the circulation pipeline are respectively connected to a cold water tank and the heat exchange component. The circulation pump is installed on the circulation pipeline. The heat exchange component and the refrigeration component are connected for heat exchange. The heat exchange component can absorb the cold energy generated by the heat exchange component to cool the circulating water flowing through the refrigeration component to produce ice and / or ice water. With this configuration, while satisfying the requirements for producing ice and ice water, the structure of the refrigeration device is simplified and the technology is made more mature.

[0019] Furthermore, the drinking water device of the present invention also includes a water purification device, the inlet of which is directly or indirectly connected to an external water source, and the outlet of which is connected to the inlet of a pure water tank. This configuration makes water replenishment more convenient and faster, achieving automatic purification and replenishment of raw water to the pure water tank, eliminating the need for manual water replenishment, meeting the water requirements for water production and ice making, and making the water production and ice making processes healthier and more hygienic, improving the purity and taste of drinking water and ice.

[0020] Furthermore, the water purification device of the present invention includes a booster pump and a reverse osmosis filter. The reverse osmosis filter includes a raw water inlet, a pure water inlet, and a wastewater inlet. The inlet of the booster pump is directly or indirectly connected to an external water source, the outlet of the booster pump is connected to the raw water inlet, the pure water inlet is directly or indirectly connected to the inlet of a pure water tank, and the wastewater inlet is connected to an external space. The booster pump and reverse osmosis filter can remove heavy metals (such as lead, mercury, and cadmium), bacteria, viruses, organic matter, and inorganic salts from tap water, making the purified water close to pure water standards and improving water quality.

[0021] Furthermore, the water purification device of the present invention also includes a pre-filter, the inlet of which is connected to an external water source, and the outlet of which is connected to the inlet of a booster pump; and / or the water purification device also includes a post-filter, the inlet of which is connected to a pure water outlet, and the outlet of which is connected to the inlet of a pure water tank. The pre-filter removes large particulate impurities from tap water, preventing damage to the high-flow reverse osmosis filter and affecting its lifespan; the post-filter adsorbs and purifies residual chlorine, residual chemicals, and odors in the water, thereby improving water quality and taste.

[0022] Furthermore, the water purification device of the present invention also includes a pure water return pipeline and an overflow valve. The inlet of the pure water return pipeline is connected to the outlet of the post-filter, and the outlet of the pure water return pipeline is connected to the inlet of the booster pump. The overflow valve is installed on the pure water return pipeline. With this configuration, on the one hand, when the water pressure between the outlet of the post-filter and the pure water tank is too high, pure water can be diverted to the booster pump at the front end of the filter to reduce the system pressure in time and reduce the damage to the pipeline caused by high pressure. On the other hand, pure water can be mixed with raw water to reduce the TDS value of the raw water, reduce the pressure of the raw water on the reverse osmosis filter, and help extend the service life of the high-flow reverse osmosis filter.

[0023] Furthermore, the drinking water device of the present invention also includes a raw water tank, the inlet of which is connected to an external water source, and the outlet of which is connected to the inlet of a booster pump. With this configuration, the raw water tank can store untreated raw water or tap water, serving to regulate water volume and perform preliminary filtration of impurities.

[0024] Furthermore, the drinking water device of the present invention also includes a cold water return pipe, the inlet of which is connected to the cold water return port of the cold water tank, and the outlet of which is connected to the return port of the raw water tank. With this configuration, on the one hand, purified water that has been sitting in the cold water tank for too long can be introduced into the raw water tank for further filtration to remove impurities and odors; on the other hand, during the disinfection process, hot water can be introduced into the raw water tank and the purification device to thoroughly disinfect the purified water circuit within the drinking water device.

[0025] Furthermore, the water purification device of the present invention also includes a wastewater return pipeline, wherein the inlet of the wastewater return pipeline is connected to the wastewater outlet, and the outlet of the wastewater return pipeline is connected to the return outlet of the raw water tank. This configuration provides a water-saving mode that can perform secondary filtration of the wastewater generated by the reverse osmosis filter, thereby increasing the pure water production rate and reducing water waste. Attached Figure Description

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the drinking water device of the present invention.

[0027] List of reference numerals in the attached diagram: 1. Pure water tank; 2. Hot water pipeline; 21. Heating device; 22. Hot water pump; 3. Cold water pipeline; 31. Cold water pump; 4. Control valve; 41. First outlet valve; 42. Second outlet valve; 43. Inlet valve; 5. Hot water return pipeline; 6. Cold water tank; 61. Make-up water pump; 7. Refrigeration unit; 71. Heat exchange component; 72. Refrigeration component; 73. Ice making pipeline; 74. Circulation pump; 81. Booster pump; 82. Reverse osmosis filter; 821. Raw water inlet; 822. Pure water inlet; 823. Wastewater inlet; 83. Post-filter; 84. Pure water return pipeline; 841. Overflow valve; 85. Cold water return pipeline; 851. Return pump; 86. Wastewater return pipeline; 9. Raw water tank; 10. Water intake pipe. Detailed Implementation

[0028] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. Those skilled in the art can make adjustments as needed to adapt to specific applications.

[0029] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," "right," "front," and "rear," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Addressing the issue of complex and ineffective water disinfection schemes in existing drinking water equipment, as pointed out in the background section, this invention provides a drinking water device that utilizes a hot water return pipe. This pipe connects to the outlet of a heating device and the hot water return port of a pure water tank, respectively. This allows heated water to be directed into the pure water tank and then into different pipes, enabling high-temperature disinfection of different water circuits within the water purification system as needed. This simplifies the disinfection structure and improves the disinfection effect.

[0032] Specifically, such as Figure 1 As shown, the drinking water device of the present invention includes a pure water tank 1, a hot water pipeline 2, a cold water pipeline 3, a water intake pipe 10, and a hot water return pipeline 5. The pure water tank 1 is used to store purified pure water. In practical applications, the pure water tank 1 can be set as a replaceable bottled water, or an inlet can be set on a fixed pure water tank 1 so that the inlet of the pure water tank 1 is connected to the water purification device, as long as it can store and supply pure water.

[0033] The two ends of the hot water pipe 2 are connected to the outlet of the pure water tank 1 and the water intake pipe 10, respectively. A heating device 21 is installed on the hot water pipe 2 to heat the water flow and deliver hot water to the water intake pipe 10 for users to use. The two ends of the cold water pipe 3 are directly or indirectly connected to the outlet of the pure water tank 1 and the water intake pipe 10, respectively, forming a water circuit structure in parallel between the hot water pipe 2 and the cold water pipe 3, realizing the mixing of cold water and hot water. By controlling the mixing ratio of cold water and hot water, the water temperature at the water intake pipe 10 is adjusted, so that users can take out drinking water at different temperatures at the water intake pipe 10.

[0034] Because water systems are enclosed and humid, they are prone to bacterial growth, which can affect the health of the water used. Regular sterilization is necessary. Existing water systems typically use UV modules or flow sterilization modules for sterilization. However, these devices are relatively complex in structure, requiring dedicated installation space and upgrades to the materials of pipes and water tanks. This results in complex structures, increased costs, and blind spots in sterilization, making the sterilization incomplete and affecting the sterilization effect.

[0035] Based on this, such as Figure 1 As shown, this invention includes a hot water return pipe 5. By connecting both ends of the hot water return pipe 5 to the outlet of the heating device 21 and the hot water return port of the pure water tank 1, respectively, heated water can be introduced into the pure water tank 1 and the cold water pipe 3 for high-temperature sterilization. On the one hand, this achieves the mixing of cold and hot water to produce water at different temperatures; on the other hand, without significantly altering the water circuit structure, the hot water return pipe 5 allows hot water from the hot water pipe 2 to be sequentially introduced into the pure water tank 1 and the cold water pipe 3 when sterilization is required, achieving high-temperature sterilization of different pipes.

[0036] For example, the inlet of the hot water return pipe 5 is connected to the hot water pipe 2 via a control valve 4. Specifically, the control valve 4 includes an inlet valve 43, a first outlet valve 41, and a second outlet valve 42. The inlet valve 43 is connected to the outlet of the heating device 21, the first outlet valve 41 is connected to the water intake pipe 10, and the second outlet valve 42 is connected to the inlet of the hot water return pipe 5. A hot water pump 22 and a cold water pump 31 are respectively installed on the hot water pipe and the cold water pipe to draw pure water into their respective pipes.

[0037] In water production mode, the inlet valve 43 of the control valve 4 is connected to the first outlet valve 41. The controller controls the speed of the hot water pump 22 and the cold water pump 31 according to the user's temperature command, thereby controlling the mixing ratio of hot water and cold water.

[0038] When switching to the disinfection mode, the inlet valve 43 of the control valve 4 is switched from the first outlet valve 41 to the second outlet valve 42. At the same time, the hot water pump 22 and the heating device 21 are turned on, so that the hot water circulates between the hot water return pipe 5, the pure water tank 1 and the hot water pipe 2. During the circulation process, the water is heated.

[0039] When the temperature of the circulating water reaches the preset temperature, such as 90° to 100°, the system shuts off the hot water pump 22 and turns on the cold water pump 31 to pump the hot water in the pure water tank 1 into the cold water pipe 3 to disinfect the cold water pipe 3 at high temperature. Finally, the water intake pipe 10 is opened to discharge all the hot water.

[0040] In a preferred embodiment of the present invention, such as Figure 1As shown, the drinking water equipment also includes a cold water tank 6 and a refrigeration unit 7. The refrigeration unit 7 and the cold water tank 6 form a circulating water circuit, which can cool the circulating water during the ice-making process to produce ice cubes and ice water. The inlet of the cold water tank 6 is connected to the outlet of the pure water tank 1, and the outlet of the cold water tank 6 is connected to the water intake pipe 10 through the cold water pipe 3. During the sterilization process, heated water can be simultaneously introduced into the cold water tank 6 and the refrigeration unit 7 for high-temperature sterilization. On the one hand, the water storage function of the cold water tank 6 can meet the water demand of the refrigeration unit 7 for producing ice cubes and ice water; on the other hand, it can also recover the ice water produced during the ice-making process to achieve the mixing of ice water and hot water, further increasing the temperature adjustment range at the water intake to meet different user water temperature requirements; furthermore, during the sterilization process, heated water can be simultaneously introduced into the cold water tank 6, and the water flow can circulate between the refrigeration unit 7 and the cold water tank 6 to sterilize the refrigeration unit 7 at high temperature.

[0041] Preferably, such as Figure 1 As shown, the refrigeration device 7 of the present invention includes a heat exchange component 71, a refrigeration component 72, an ice-making pipeline 73, and a circulation pump 74. The two ends of the ice-making pipeline 73 are respectively connected to the cold water tank 6 and the refrigeration component 72. The circulation pump 74 is installed on the ice-making pipeline 73. The heat exchange component 71 is connected to the refrigeration component 72 for heat exchange, and can cool the circulating water flowing through the refrigeration component 72 to produce ice cubes and ice water.

[0042] For example, the cold water tank 6 is connected to the outlet of the pure water tank 1 via a water replenishment pump 61, which can first pump pure water into the cold water tank 6 for storage. The top of the cold water tank 6 is provided with an opening. The refrigeration component 72 is configured as an ice-making container (such as an ice maker), which is installed above the top opening of the cold water tank 6. The water inlet of the refrigeration component 72 is connected to the bottom of the cold water tank 6 via an ice-making pipe 73 and a circulation pump 74, which can pump the water in the cold water tank 6 into the ice-making container. The water outlet of the ice-making container is provided with a downward-facing outlet, which can allow the water in the ice-making container to flow back into the cold water tank 6, thereby forming a circulating water flow.

[0043] Preferably, the heat exchange component 71 is configured as a heat pump circulation system, including an evaporator. The evaporator is installed in close contact with the ice-making container and can transfer cold energy to the ice-making container to make ice blocks of different shapes inside the ice-making container. At the same time, the ice water that has not yet frozen during the ice-making process flows back to the cold water tank 6. The ice blocks are taken out through a special ice-removal channel. The ice water can be mixed with hot water through the cold water pipe 3, further increasing the temperature regulation range of the water at the water outlet.

[0044] The heat pump cycle system and evaporator have a simple structure and mature technology, which helps to control costs while ensuring efficient ice making.

[0045] When it is necessary to disinfect the cold water tank 6 and the refrigeration unit 7, the cold water in the cold water tank 6 can be discharged first by the cold water pump 31. When the circulating water in the pure water tank 1 reaches the preset temperature, the hot water pump 22 is turned off and the water replenishment pump 61 is turned on to introduce hot water into the cold water tank 6. After the hot water reaches a certain volume, the circulation pump 74 is turned on to make the hot water circulate between the cold water tank 6 and the refrigeration unit 7 to achieve high-temperature disinfection.

[0046] Preferably, the drinking water equipment of the present invention further includes a water purification device, the inlet of which is directly or indirectly connected to an external water source, and the outlet of which is connected to the inlet of the pure water tank 1. By connecting the water purification device to an external water source such as a tap, water replenishment becomes more convenient and faster, achieving automatic purification and replenishment of raw water to the pure water tank 1, eliminating the need for manual water replenishment, meeting the water requirements for water production and ice making, and making the water production and ice making processes healthier and more hygienic, improving the purity and taste of drinking water and ice.

[0047] The type of water purification device may include one or more filtration devices.

[0048] Preferably, such as Figure 1 As shown, the water purification device of the present invention includes a booster pump 81 and a reverse osmosis filter 82. The reverse osmosis filter 82 includes a raw water inlet 821, a pure water inlet 822, and a wastewater inlet 823. The inlet of the booster pump 81 is directly or indirectly connected to an external water source, the outlet of the booster pump 81 is connected to the raw water inlet 821, the pure water inlet 822 is directly or indirectly connected to the inlet of the pure water tank 1, and the wastewater inlet 823 is connected to the external space. The booster pump 81 and the reverse osmosis filter 82 can filter out heavy metals (such as lead, mercury, and cadmium), bacteria, viruses, organic matter, and inorganic salts from tap water, making the purified water close to the pure water standard and improving water quality.

[0049] Preferably, such as Figure 1 As shown, the water purification device of the present invention further includes a pre-filter (not shown) and / or a post-filter 83. The inlet of the pre-filter is connected to an external water source, and the outlet of the pre-filter is connected to the inlet of the booster pump 81. The inlet of the post-filter 83 is connected to the pure water outlet 822, and the outlet of the post-filter 83 is connected to the inlet of the pure water tank 1. The pre-filter is preferably configured as a PP cotton filter element or an ultrafiltration membrane filter element, which can filter out large particulate impurities in tap water and prevent impurities from damaging the high-flow reverse osmosis filter 82 and affecting its lifespan. The post-filter 83 is preferably configured as an activated carbon filter element, which can adsorb and purify residual chlorine, residual chemicals and odors in the water to improve water quality and taste.

[0050] Preferably, the water purification device of the present invention further includes a pure water return pipeline 84 and an overflow valve 841. The inlet of the pure water return pipeline 84 is connected to the outlet of the post-filter 83, and the outlet of the pure water return pipeline 84 is connected to the inlet of the booster pump 81. The overflow valve 841 is installed on the pure water return pipeline 84. On the one hand, when the water pressure in the pipeline between the outlet of the post-filter 83 and the pure water tank 1 is too high, pure water can be diverted to the booster pump 81 at the front end of the filter to reduce the system pressure in time and reduce the damage to the pipeline caused by high pressure. On the other hand, pure water can be introduced into the raw water to reduce the TDS value of the raw water and reduce the pressure of the raw water on the reverse osmosis filter 82, which helps to extend the service life of the high-flow reverse osmosis filter 82.

[0051] Preferably, the drinking water device of the present invention further includes a raw water tank 9, the inlet of which is connected to an external water source, and the outlet of which is connected to the inlet of a booster pump 81. It can store untreated raw water or tap water, and serves to regulate water volume and perform preliminary filtration of impurities.

[0052] Preferably, the drinking water device of the present invention further includes a cold water return pipe 85, the inlet of which is connected to the cold water return port of the cold water tank 6, and the outlet of which is connected to the return port of the raw water tank 9.

[0053] A return pump 851 is installed on the cold water return pipeline 85. Through the return pump 851, pure water that has been left in the cold water tank 6 for too long can be introduced into the raw water tank 9 for further filtration to remove impurities and odors from the pure water. In addition, during the disinfection process, hot water in the cold water tank 6 can be introduced into the raw water tank 9 and the purification device to carry out comprehensive disinfection of the water circuit in the drinking water equipment.

[0054] Preferably, the water purification device of the present invention further includes a wastewater return pipe 86, the inlet of which is connected to a wastewater outlet 823, and the outlet of which is connected to the return outlet of the raw water tank 9. This configuration provides a water-saving mode, enabling secondary filtration of the wastewater generated by the reverse osmosis filter 82 to increase the yield of pure water and reduce water waste.

[0055] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A drinking water device, characterized in that, The drinking water equipment includes a pure water tank (1), a hot water pipeline (2), a cold water pipeline (3), a water intake pipe (10), and a hot water return pipeline (5). The two ends of the hot water pipe (2) are connected to the outlet of the pure water tank (1) and the water intake pipe (10) respectively. A heating device (21) is provided on the hot water pipe (2) to heat the water flow. The two ends of the cold water pipeline (3) are directly or indirectly connected to the outlet of the pure water tank (1) and the water intake pipe (10), respectively. One end of the hot water return pipe (5) is connected to the outlet of the heating device (21), and the other end of the hot water return pipe (5) is connected to the hot water return port of the pure water tank (1) and / or the cold water pipe, so as to introduce the heated water into the pure water tank (1) and / or the cold water pipe (3) for high-temperature sterilization.

2. The drinking water equipment according to claim 1, characterized in that, The drinking water equipment also includes a cold water tank (6) and a refrigeration device (7). The refrigeration device (7) and the cold water tank (6) form a circulating water circuit. The refrigeration device (7) can cool the circulating water flow to produce ice cubes and / or ice water. The inlet of the cold water tank (6) is connected to the outlet of the pure water tank (1). The outlet of the cold water tank (6) is connected to the water intake pipe (10) through the cold water pipeline (3). During the disinfection process, the heated water flow can be introduced into the cold water tank (6) and the refrigeration device (7) for high-temperature sterilization.

3. The drinking water equipment according to claim 2, characterized in that, The refrigeration device (7) includes a heat exchange component (71), a refrigeration component (72), a circulation pipeline (73), and a circulation pump (74). The two ends of the circulation pipeline (73) are respectively connected to the cold water tank (6) and the heat exchange component (72). The circulation pump (74) is installed on the circulation pipeline (73). The heat exchange component (71) is heat-exchange connected to the refrigeration component (72). The heat exchange component (72) can absorb the cold energy generated by the heat exchange component (71) to cool the circulating water flowing through the refrigeration component (72) to produce ice and / or ice water.

4. The drinking water equipment according to claim 2, characterized in that, The drinking water equipment also includes a water purification device, the inlet of which is directly or indirectly connected to an external water source, and the outlet of which is connected to the inlet of the pure water tank (1).

5. The drinking water equipment according to claim 4, characterized in that, The water purification device includes a booster pump (81) and a reverse osmosis filter (82). The reverse osmosis filter (82) includes a raw water inlet (821), a pure water inlet (822), and a wastewater inlet (823). The inlet of the booster pump (81) is directly or indirectly connected to an external water source. The outlet of the booster pump (81) is connected to the raw water inlet (821). The pure water inlet (822) is directly or indirectly connected to the inlet of the pure water tank (1). The wastewater inlet (823) is connected to the external space.

6. The drinking water equipment according to claim 5, characterized in that, The water purification device further includes a pre-filter, the inlet of which is connected to an external water source, and the outlet of which is connected to the inlet of the booster pump (81); and / or The water purification device also includes a post-filter (83), the inlet of which is connected to the pure water outlet (822), and the outlet of which is connected to the inlet of the pure water tank (1).

7. The drinking water equipment according to claim 6, characterized in that, The water purification device also includes a pure water return pipeline (84) and an overflow valve (841). The inlet of the pure water return pipeline (84) is connected to the outlet of the post-filter (83), and the outlet of the pure water return pipeline (84) is connected to the inlet of the booster pump (81). The overflow valve (841) is installed on the pure water return pipeline (84).

8. The drinking water equipment according to claim 5, characterized in that, The drinking water equipment also includes a raw water tank (9), the inlet of which is connected to an external water source, and the outlet of which is connected to the inlet of the booster pump (81).

9. The drinking water equipment according to claim 8, characterized in that, The drinking water equipment also includes a cold water return pipe (85), the inlet of which is connected to the cold water return port of the cold water tank (6), and the outlet of which is connected to the return port of the raw water tank (9).

10. The drinking water equipment according to claim 8, characterized in that, The water purification device also includes a wastewater return pipe (86), the inlet of which is connected to the wastewater outlet (823), and the outlet of which is connected to the return outlet of the raw water tank (9).

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