Water purifying device, water inlet assembly thereof, purified drinking water heater and zero cold water system

Abstract

The invention relates to a water purifying device and a water purifying assembly thereof, a purified drinking water heater and a zero cold water system. The water purifying device comprises a water purifier, a water supply pipe and a cooling device. The water purifier is provided with a raw water inlet part. One end of the water supply pipe is communicated with a hot water using point, and the other end of the water supply pipe is communicated with the raw water inlet part. The cooling device is arranged on the outer side and / or the inner side of the supply water pipe and used for cooling the supply water pipe. In the process that hot water of a hot water using point is fed into the raw water inlet part through the supply water pipe, the supply water pipe is cooled through the cooling device, so that the temperature of the raw water reaching the raw water inlet part is lower than the preset temperature, and the temperature of a filter element cannot be increased in the process that the raw water enters the water purifier to be in contact with the filter element; therefore, the filtering performance of the filter element is not influenced, and the replacement and maintenance times of the filter element can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of hot water equipment, and in particular to a water purification device and a water inlet component thereof, a pure drinking water heater and a zero cold water system. Background Art

[0002] Water purification devices are becoming increasingly popular in people's lives. Water flowing into the water purification device is filtered and purified through a filter element to obtain pure water that can be directly drunk, and concentrated water is discharged.

[0003] In the related art, in order to realize the zero cold water function of the water heater, the return pipe or cold water pipe of the water system is generally used as the return pipe of the water heater. If the cold water pipe is used as the return pipe of the water heater, the water purification device connected to the cold water pipe will easily have the defect of poor filtering effect of the filter element, and the filter element needs to be frequently replaced and maintained. Summary of the invention

[0004] The first technical problem solved by the present application is to provide a water inlet assembly for a water purification device, which can prevent the filtering performance of the filter element from being reduced and reduce the number of replacement and maintenance times.

[0005] The second technical problem solved by the present application is to provide a water purification device which can prevent the filtering performance of the filter element from being reduced and reduce the number of replacement and maintenance times.

[0006] The third technical problem solved by the present application is to provide a pure drinking water heater, which can prevent the filtering performance of the filter element from being reduced and reduce the number of replacement and maintenance times.

[0007] The fourth technical problem solved by the present application is to provide a zero cold water system, which can prevent the filtering performance of the filter element from being reduced and reduce the number of replacement and maintenance times.

[0008] The first technical problem mentioned above is solved by the following technical solution:

[0009] A water inlet assembly of a water purifier, the water inlet assembly of the water purifier comprising:

[0010] A water supply pipe, one end of which is connected to a hot water point, and the other end of which is connected to a raw water inlet of the water purifier; and

[0011] A cooling device is arranged on the outside and / or inside of the supply water pipe and is used to cool the supply water pipe.

[0012] The water inlet assembly of the water purification device described in the present application has the following beneficial effects compared with the background technology:

[0013] In the water inlet assembly of the above-mentioned water purification device, when the hot water from the hot water use point is sent to the raw water inlet through the supply water pipe, the supply water pipe is cooled by the cooling device, so that the temperature of the raw water reaching the raw water inlet is relatively low. In this way, the temperature of the filter element will not increase when the raw water enters the water purifier and contacts the filter element, and the pore size of the filter element will not become larger. In this way, the filtering performance of the filter element will not be affected, thereby reducing the number of replacement and maintenance times of the filter element.

[0014] In one of the embodiments, the cooling device includes a cooling pipe; the water purifier is provided with a concentrated water outlet, and the cooling pipe is connected to the concentrated water outlet; the cooling pipe and the water supply pipe are nested with each other.

[0015] In one of the embodiments, one end of the cooling pipe is connected to the concentrated water outlet, and the other end of the cooling pipe is used to be connected to the pipe network of the zero cooling water system.

[0016] In one of the embodiments, the cooling pipe is provided with a water supply port.

[0017] In one embodiment, the supply water pipe is passed through the cooling pipe, and both ends of the supply water pipe extend to the outside of the cooling pipe respectively; the opposite ends of the cooling pipe are respectively provided with a first joint and a second joint, the first joint is connected to the concentrated water outlet through a first connecting pipe, and the second joint is connected to the pipe network of the zero cooling water system through a second connecting pipe.

[0018] In one embodiment, a first temperature probe and a first switch valve are provided at the water outlet of the water supply pipe; the first temperature probe is electrically connected to the first switch valve, and the first switch valve is used to close the water outlet of the water supply pipe when the first temperature probe senses that the water temperature at the water outlet of the water supply pipe is higher than a preset temperature.

[0019] In one of the embodiments, a second switch valve is provided at the water outlet of the cooling pipe, and the second switch valve is electrically connected to the water purifier.

[0020] In one embodiment, the water supply pipe is a metal pipe; and / or the water supply pipe is a corrugated pipe.

[0021] In one of the embodiments, the cooling device further includes a cooling fan, and an air outlet of the cooling fan faces the water supply pipe.

[0022] The above second technical problem is solved by the following technical solution:

[0023] A water purifier comprises the water inlet assembly of the water purifier and a water purifier. The water purifier is provided with a raw water inlet part.

[0024] The water purification device described in this application has the following beneficial effects compared with the background technology:

[0025] In the above-mentioned water purification device, when the hot water at the hot water use point is sent to the raw water inlet through the supply water pipe, the supply water pipe is cooled by the cooling device, so that the temperature of the raw water reaching the raw water inlet is relatively low. In this way, the temperature of the filter element will not increase when the raw water enters the water purifier and contacts the filter element, and the pore size of the filter element will not become larger. In this way, the filtering performance of the filter element will not be affected, thereby reducing the number of replacement and maintenance times of the filter element.

[0026] The third technical problem mentioned above is solved by the following technical solution:

[0027] A drinking water purifying water heater, comprising the water purifying device, a water heater main unit and a shell, wherein the water heater main unit is provided with a hot water outlet, the hot water use point is connected with the hot water outlet, and the water heater main unit and the water purifying device are arranged in the shell.

[0028] The drinking water purifier described in this application has the following beneficial effects compared with the background technology:

[0029] In the above-mentioned drinking water purifier, when the hot water at the hot water use point is sent to the raw water inlet through the supply water pipe, the supply water pipe is cooled by the cooling device, so that the temperature of the raw water reaching the raw water inlet is relatively low. In this way, the temperature of the filter element will not increase when the raw water enters the water purifier and contacts the filter element, and the pore size of the filter element will not become larger. In this way, the filtering performance of the filter element will not be affected, thereby reducing the number of replacement and maintenance times of the filter element.

[0030] The fourth technical problem mentioned above is solved by the following technical solution:

[0031] A zero-cold water system includes the water purification device, a water heater and a circulation pipeline. The water inlet and outlet of the water heater are respectively connected to the circulation pipeline. The circulation pipeline is provided with at least one hot water point and a water inlet pipe.

[0032] The zero cold water system described in this application has the following beneficial effects compared with the background technology:

[0033] In the above-mentioned zero cold water system, when the hot water at the hot water use point is sent to the raw water inlet through the supply water pipe, the supply water pipe is cooled by the cooling device, so that the temperature of the raw water reaching the raw water inlet is relatively low. In this way, the temperature of the filter element will not increase when the raw water enters the water purifier and contacts the filter element, and the pore size of the filter element will not become larger. In this way, the filtering performance of the filter element will not be affected, thereby reducing the number of replacement and maintenance times of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 It is a simplified structural diagram of a zero cooling water system according to an embodiment of the present application.

[0037] Figure 2 This is a structural diagram of a water inlet pipe and a cooling pipe when they are nested in one embodiment of the present application.

[0038] Figure 3 for Figure 2 A cross-sectional structural diagram of the structure shown.

[0039] Reference numerals:

[0040] 10. Water purification device; 11. Water purifier; 111. Raw water inlet; 112. Concentrated water outlet; 113. Purified water outlet; 12. Water supply pipe; 13. Cooling device; 131. Cooling pipe; 1311. Water replenishment port; 1312. First joint; 1313. Second joint; 14. First connecting pipe; 15. Second connecting pipe; 16. Purified water discharge pipe; 20. Circulation pipeline; 21. One-way valve; 22. Water inlet pipe; 30. Water heater; 31. Water pump; 40. Tap water outlet pipe; 50. Hot water outlet pipe. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0042] As described in the background technology, the related technology uses a cold water pipe as the return pipe of the water heater. After the water purifier is connected to the hot water water point and used for a period of time, the filtering performance of the filter element is prone to decrease, resulting in the defect of poor filtering effect, which reduces the service life and requires frequent replacement and maintenance of the filter element. The inventor has found that the reason for this problem is that when a cold water pipe is used as the return pipe of the water heater, the water discharged from the cold water pipe is hot water, and enters the water purifier through the raw water inlet of the water purifier. The temperature of the hot water entering the water purifier is between 40°C and 60°C, which is relatively high. In the process of flowing through the filter element, the pore size of the filter element will become larger, thereby reducing the filtering effect of the filter element.

[0043] Based on the above reasons, the present application provides a water purification device and its water purification components, a pure drinking water heater and a zero cold water system, which can prevent the filtering performance of the filter element from being reduced and reduce the number of replacement and maintenance times.

[0044] See also Figures 1 to 3 , Figure 1 A simplified structural diagram of a zero-cold water system according to an embodiment of the present application is shown. Figure 2 The structure diagram of the water inlet pipe 22 and the cooling pipe 131 in an embodiment of the present application when they are nested is shown. Figure 3 Shows Figure 2 A cross-sectional structural diagram of the structure shown. An embodiment of the present application provides a water purification device 10, and the water purification device 10 includes: a water purifier 11 and a water inlet assembly. Specifically, the water inlet assembly includes a supply water pipe 12 and a cooling device 13. The water purifier 11 is provided with a raw water inlet 111. One end of the supply water pipe 12 is used to communicate with a hot water water point, and the other end of the supply water pipe 12 is used to communicate with the raw water inlet 111. The cooling device 13 is arranged on the outside and / or inside of the supply water pipe 12, and is used to cool the supply water pipe 12.

[0045] In the above-mentioned water purification device 10 and its water inlet assembly, when the hot water at the hot water use point is delivered to the raw water inlet part 111 through the supply water pipe 12, the supply water pipe 12 is cooled by the cooling device 13, so that the temperature of the raw water reaching the raw water inlet part 111 is lower than the preset temperature, so that the temperature of the filter element will not increase when the raw water enters the water purifier 11 and contacts the filter element, and the pore size of the filter element will not increase, so that the filtering performance of the filter element will not be affected, thereby reducing the number of times the filter element needs to be replaced and repaired.

[0046] The raw water in this article is the original water source that has not yet entered the water purification device 10, and specifically, for example, tap water or other water sources heated by the zero cold water system. When the hot water point delivers the raw water to the raw water inlet 111 through the water supply pipe 12, the raw water is filtered by the filter element to obtain clean water and concentrated water. The clean water is discharged from the clean water outlet 113 and the clean water discharge pipe 16 connected to the clean water outlet 113 and provided to the user. The calcium and magnesium ion content in the concentrated water is relatively high, and it is treated as wastewater.

[0047] In some embodiments, the hot water point includes but is not limited to being set on the circulation pipeline 20 of the zero cold water system, that is, Figure 1 As shown in point P1 in FIG. 1 , one end of the water supply pipe 12 is specifically connected to the Figure 1 The hot water point P1 shown is connected.

[0048] It should be noted that the cooling device 13 includes but is not limited to various cooling structures such as liquid cooling device, air cooling device, heat sink fins, semiconductor cooling sheet, etc. When the cooling device 13 adopts a liquid cooling device, the cooling medium of the liquid cooling device is, for example, water or other types of liquids, which lowers the water temperature of the supply water pipe 12 by directly contacting the supply water pipe 12; when the cooling device 13 adopts an air cooling device, the air cooling device 13 includes but is not limited to various forms of blowing structures such as fans, centrifugal fans or air ducts, which are used to blow cold air to the supply water pipe 12 to lower the water temperature of the supply water pipe 12; when the cooling device 13 adopts a semiconductor cooling sheet, the cold surface of the semiconductor cooling sheet lowers the temperature of the supply water pipe 12 by contacting the supply water pipe 12; when the cooling device 13 is set as a heat sink fin, the heat sink fin is specifically set on the outer wall of the supply water pipe 12, and the heat sink fin can increase the heat dissipation area, so that the heat of the supply water pipe 12 is quickly dissipated to the external environment, thereby quickly reducing the temperature of the supply water pipe 12.

[0049] It should be noted that the number and type of the cooling device 13 are not limited to one, and can be flexibly adjusted and set according to actual needs.

[0050] See also Figures 1 to 3In some embodiments, the cooling device 13 includes a cooling pipe 131. The water purifier 11 is provided with a concentrated water outlet 112, and the cooling pipe 131 is connected to the concentrated water outlet 112. The cooling pipe 131 and the water supply pipe 12 are nested with each other. When the zero cold water system completes heating, the cold water pipe will be heated to, for example, about 45°C and output to the outside through the hot water water point. At this time, if the water purifier 11 has a water demand, the hot water at the hot water use point is input through the water supply pipe 12, and heat is exchanged with the concentrated water in the cooling pipe 131 through the pipe wall of the water supply pipe 12, thereby reducing the hot water temperature of the water supply pipe 12; in addition, according to the working principle of the water purifier 11, when the purified water outlet 113 of the water purifier 11 is closed, the water purifier 11 will discharge the concentrated water on the filter element, and this part of the concentrated water will replace the water in the cooling pipe 131, thereby reducing the water temperature in the cooling pipe 131 and making it closer to room temperature, and in the intervals when the water purifier 11 is working, the water supply pipe 12 and the cooling pipe 131 also continuously exchange heat with the air, so that the water temperature in the pipe is basically consistent with the room temperature, thereby achieving a constant temperature effect.

[0051] It can be seen that, on the one hand, the water input into the supply water pipe 12 from the hot water use point can exchange heat with the concentrated water flowing into the cooling pipe 131, so that the temperature of the raw water can be basically consistent with the room temperature, thereby satisfying a temperature lower than the preset temperature; on the other hand, there is no need to use other cooling devices 13 to reduce the water temperature of the supply water pipe 12, which saves energy, simplifies the structure and reduces costs; in addition, the heat exchange between concentrated water and raw water is efficient, the overall volume is small, and it can store concentrated water and withstand greater pressure, so that the system has more time to process the concentrated water.

[0052] It should be noted that two pipes are nested in each other, which means that one pipe is inserted into the other pipe. In some embodiments, the supply water pipe 12 can be inserted into the cooling pipe 131, so that the concentrated water flows in the area between the outer wall of the supply water pipe 12 and the inner wall of the cooling pipe 131; the supply water pipe 12 can also be sleeved on the outside of the cooling pipe 131, that is, the cooling pipe 131 is inserted into the supply water pipe 12, so that the raw water flows in the area between the outer wall of the cooling pipe 131 and the inner wall of the supply water pipe 12. In this embodiment, the supply water pipe 12 inserted into the cooling pipe 131 is specifically used as an example, but it is not limited to this.

[0053] See also Figures 1 to 3In some embodiments, one end of the cooling pipe 131 is connected to the concentrated water outlet 112, and the other end of the cooling pipe 131 is used to connect to the pipe network of the zero cooling water system. In this way, the concentrated water is introduced into the pipe network of the zero cooling water system through the cooling pipe 131, so that the concentrated water does not need to be discharged as waste water, but is mixed with other hot water after entering the pipe network, so that the concentration of calcium and magnesium ions in the concentrated water is diluted, and is discharged as domestic water or re-enters the water supply pipe 12 for use, thereby saving water resources, and the structure is simplified and the cost is reduced due to the provision of a concentrated water discharge device.

[0054] It should be noted that the cooling pipe 131 can be connected to any pipe in the pipe network, and the specific connection position can be flexibly adjusted and set according to actual needs, and is not limited here. As an example, the pipe network includes a circulation pipe 20 connected to the water heater 30, and the end of the cooling pipe 131 is connected to the circulation pipe 20. The connection position is as follows: Figure 1 Since the cooling pipe 131 is relatively close to the circulation pipeline 20, it is convenient to connect with the circulation pipeline 20.

[0055] See also Figure 2 and Figure 3 In some embodiments, the cooling pipe 131 is provided with a water replenishment port 1311. Thus, after the water purifier 11 is connected to the zero cooling water system through the water supply pipe 12 and the cooling pipe 131, since there is no concentrated water in the cooling pipe 131 in the initial stage, cooling water can be replenished into the cooling pipe 131 through the water replenishment port 1311, so that during the initial stage of use of the water purifier 11 after being installed in the zero cooling water system, there is cooling water in the cooling pipe 131 to heat exchange and cool the hot water entering from the water supply pipe 12.

[0056] See also Figures 1 to 3 In some embodiments, the supply water pipe 12 is passed through the cooling pipe 131, and the two ends of the supply water pipe 12 extend out of the cooling pipe 131 respectively. The first joint 1312 and the second joint 1313 are respectively provided at the opposite ends of the cooling pipe 131. The first joint 1312 is connected to the concentrated water outlet 112 through the first connecting pipe 14, and the second joint 1313 is connected to the pipe network of the zero cooling water system through the second connecting pipe 15. In this way, since the opposite ends of the supply water pipe 12 extend out of the cooling pipe 131 respectively, it is convenient to connect with the raw water inlet 111 and the hot water water point P1 respectively; in addition, since the first joint 1312 and the second joint 1313 are respectively provided at the opposite ends of the cooling pipe 131, the first joint 1312 is connected to the concentrated water outlet 112 through the first connecting pipe 14, and the second joint 1313 is connected to the pipe network through the second connecting pipe 15. The connection position is as shown in FIG. Figure 1 As shown in point P2.

[0057] It should be noted that the "cooling pipe 131" can be "a part of the water supply pipe 12", that is, the "cooling pipe 131" and the "other parts of the water supply pipe 12" are manufactured as one piece; it can also be an independent component separable from the "other parts of the water supply pipe 12", that is, the "cooling pipe 131" can be manufactured independently and then combined with the "other parts of the water supply pipe 12" into a whole.

[0058] It should be noted that the "first joint 1312 and the second joint 1313" can be "a part of the cooling pipe 131", that is, the "first joint 1312 and the second joint 1313" and the "other parts of the cooling pipe 131" are manufactured as one piece; or they can be an independent component separable from the "other parts of the cooling pipe 131", that is, the "first joint 1312 and the second joint 1313" can be manufactured independently and then combined with the "other parts of the cooling pipe 131" into a whole.

[0059] See also Figures 1 to 3 In some embodiments, a first temperature probe and a first switch valve are provided at the water outlet of the water supply pipe 12. The first temperature probe is electrically connected to the first switch valve, and the first switch valve is used to close the water outlet of the water supply pipe 12 when the first temperature probe senses that the water temperature at the water outlet of the water supply pipe 12 is higher than a preset temperature. In this way, when the water temperature at the water outlet of the water supply pipe 12 is higher than the preset temperature, the first switch valve closes the water outlet of the water supply pipe 12, thereby preventing hot water with a temperature higher than the preset temperature from entering the interior of the water purifier 11, thereby preventing the filtering performance of the filter element from being affected, and extending the service life of the filter element.

[0060] In addition, when the first temperature probe senses that the water temperature at the water outlet of the water supply pipe 12 is less than or equal to the preset temperature, the first switch valve opens the water outlet of the water supply pipe 12, so that the water in the water supply pipe 12 is normally output to the inside of the water purifier 11.

[0061] See also Figures 1 to 3 In some embodiments, the first switch valve includes but is not limited to an electromagnetic control valve, a gas control valve, etc. In addition, the specific size of the preset temperature can be flexibly adjusted and set according to actual needs, and is not limited here.

[0062] See also Figures 1 to 3In some embodiments, a second switch valve is provided at the water outlet of the cooling pipe 131, and the second switch valve is electrically connected to the water purifier 11. In this way, when the water purifier 11 completes the water purification, the concentrated water generated is discharged to the cooling pipe 131. While being discharged to the cooling pipe 131, the second switch valve is controlled to open the water outlet of the cooling pipe 131, so that the concentrated water entering the cooling pipe 131 squeezes out the water inside the cooling pipe 131 and replaces the water inside the cooling pipe 131; when the concentrated water discharge action inside the water purifier 11 is completed, the second switch valve is controlled to close the water outlet of the cooling pipe 131.

[0063] In some embodiments, the second switch valve includes but is not limited to a solenoid control valve, a gas control valve, etc.

[0064] In some embodiments, the water supply pipe 12 includes but is not limited to a metal pipe, including but not limited to a copper pipe, an aluminum pipe, a stainless steel pipe, etc. The use of metal material can be more conducive to heat exchange. In this embodiment, the water supply pipe 12 is specifically set as a copper pipe, which has a relatively high heat exchange efficiency.

[0065] In some embodiments, the water supply pipe 12 includes but is not limited to being configured as a bellows, so that the contact area with water is increased, which can be beneficial to improving the heat exchange efficiency. Specifically, the water supply pipe 12 is configured as a stainless steel bellows or a copper bellows.

[0066] In some embodiments, the cooling device 13 further includes a cooling fan. The air outlet of the cooling fan faces the supply water pipe 12. In this way, when the cooling fan is working, cold air can be blown to the supply water pipe 12 to cool the supply water pipe 12. In this way, not only the concentrated water in the cooling pipe 131 cools the supply water pipe 12 by heat exchange, but also the cooling fan cools the supply water pipe 12, so that the supply water pipe 12 can be quickly cooled to a temperature lower than the preset temperature, and the cooling efficiency is high.

[0067] In some embodiments, the cooling fan is electrically connected to the first temperature probe, and when the first temperature probe senses that the temperature at the water outlet of the water supply pipe 12 is greater than a preset temperature, the cooling fan is controlled to work. In addition, the working power of the cooling fan can be adjusted accordingly according to the sensed temperature of the first temperature probe. Specifically, when the temperature sensed by the first temperature probe is higher, the working power of the cooling fan is greater; conversely, when the temperature sensed by the first temperature probe is lower, the working power of the cooling fan is lower, or even stops working, thereby saving energy.

[0068] See also Figures 1 to 3In some embodiments, a drinking water heater comprises a water purifier 10 of any of the above embodiments, and also comprises a water heater main unit and a housing. The water heater main unit is provided with a hot water outlet, and the hot water point is connected to the hot water outlet. The water heater main unit and the water purifier 10 are arranged in the housing.

[0069] It should be noted that the pure drinking water heater can be set as either an electric water heater or a combustion water heater. When the pure drinking water heater is set as an electric water heater, the water heater host includes an electric heating tank or an electric water tank, etc. When the pure drinking water heater is set as a combustion water heater, the water heater host includes a burner, a heat exchanger, a fan, etc.

[0070] In the above-mentioned drinking water purifier, when the hot water at the hot water use point is sent to the raw water inlet part 111 through the supply water pipe 12, the supply water pipe 12 is cooled by the cooling device 13, so that the temperature of the raw water reaching the raw water inlet part 111 is lower than the preset temperature. In this way, the temperature of the filter element will not increase when the raw water enters the water purifier 11 and contacts the filter element, and the pore size of the filter element will not increase. In this way, the filtering performance of the filter element will not be affected, thereby reducing the number of replacement and maintenance times of the filter element.

[0071] See also Figures 1 to 3 In some embodiments, a zero-cold water system includes a water purification device 10 of any of the above embodiments, and also includes a water heater 30 and a circulation pipeline 20. The water inlet and the water outlet of the water heater 30 are respectively connected to the circulation pipeline 20. The circulation pipeline 20 is provided with at least one hot water use point and a water inlet pipe 22.

[0072] In the above-mentioned zero cold water system, during the process of hot water from the hot water use point being delivered to the raw water inlet 111 through the supply water pipe 12, the supply water pipe 12 is cooled by the cooling device 13, so that the temperature of the raw water reaching the raw water inlet 111 is lower than the preset temperature, so that the temperature of the filter element will not increase when the raw water enters the water purifier 11 and contacts the filter element, and the pore size of the filter element will not become larger, so that the filtering performance of the filter element will not be affected, thereby reducing the number of times the filter element needs to be replaced and repaired.

[0073] See also Figures 1 to 3 In some embodiments, the water inlet pipe 22 is used to introduce tap water, that is, it is connected to the tap water pipe. The tap water enters the circulation pipeline 20 through the water inlet pipe 22 and mixes with the hot water in the circulation pipeline 20. The mixed hot water enters the water heater 30 under the drive of the water pump 31 of the water heater 30 and is heated to the set temperature by the water heater 30 to achieve constant temperature.

[0074] See also Figures 1 to 3In some embodiments, a one-way valve 21 is further provided on the circulation pipeline 20. The one-way valve 21 can make the hot water inside the circulation pipeline 20 circulate in a single direction.

[0075] See also Figures 1 to 3 In some embodiments, the zero cold water system further includes at least one tap water outlet pipe 40. The tap water outlet pipe 40 is connected to the circulation pipeline 20. In this way, the hot water inside the circulation pipeline 20 can be discharged to the outside through the tap water outlet pipe 40 and supplied to the user. The tap water outlet pipe 40 and the water inlet pipe 22 are both arranged on the circulation pipeline 20 close to the water inlet of the water heater 30.

[0076] See also Figures 1 to 3 In some embodiments, the zero cold water system further includes at least one hot water outlet pipe 50. The hot water outlet pipe 50 is connected to the circulation pipeline 20. In this way, the hot water inside the circulation pipeline 20 can also be discharged outward through the hot water outlet pipe 50 and supplied to the user. Among them, each hot water outlet pipe 50 is arranged on the circulation pipeline 20 close to the water outlet of the water heater 30.

[0077] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0078] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0080] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0081] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0082] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A water inlet assembly of a water purification device (10), characterized in that: The water inlet assembly of the water purification device (10) comprises: A water supply pipe (12), one end of the water supply pipe (12) being connected to a hot water point, and the other end of the water supply pipe (12) being connected to a raw water inlet (111) of a water purifier (11); and A cooling device (13), the cooling device (13) being arranged on the outside and / or inside of the water supply pipe (12) and being used for cooling the water supply pipe (12).

2. The water inlet assembly of the water purification device (10) according to claim 1, characterized in that: The cooling device (13) comprises a cooling pipe (131); the water purifier (11) is provided with a concentrated water outlet (112), and the cooling pipe (131) is connected to the concentrated water outlet (112); the cooling pipe (131) and the water supply pipe (12) are arranged to be nested with each other.

3. The water inlet assembly of the water purification device (10) according to claim 2, characterized in that: One end of the cooling pipe (131) is in communication with the concentrated water outlet (112), and the other end of the cooling pipe (131) is used to be connected to a pipe network of a zero cooling water system.

4. The water inlet assembly of the water purification device (10) according to claim 2, characterized in that: The cooling pipe (131) is provided with a water replenishment port (1311).

5. The water inlet assembly of the water purification device (10) according to claim 2, characterized in that: The supply water pipe (12) is inserted into the cooling pipe (131), and two ends of the supply water pipe (12) extend out of the cooling pipe (131) respectively; a first joint (1312) and a second joint (1313) are respectively provided at two opposite ends of the cooling pipe (131), the first joint (1312) being connected to the concentrated water outlet (112) via a first connecting pipe (14), and the second joint (1313) being connected to a pipe network of a zero cooling water system via a second connecting pipe (15).

6. The water inlet assembly of the water purification device (10) according to claim 2, characterized in that: A first temperature probe and a first switch valve are provided at the water outlet of the water supply pipe (12); the first temperature probe is electrically connected to the first switch valve, and the first switch valve is used to close the water outlet of the water supply pipe (12) when the first temperature probe senses that the water temperature at the water outlet of the water supply pipe (12) is higher than a preset temperature.

7. The water inlet assembly of the water purification device (10) according to claim 2, characterized in that: A second switch valve is provided at the water outlet of the cooling pipe (131), and the second switch valve is electrically connected to the water purifier (11).

8. The water inlet assembly of the water purification device (10) according to any one of claims 2 to 7, characterized in that: The water supply pipe (12) is a metal pipe; and / or the water supply pipe (12) is a corrugated pipe.

9. The water inlet assembly of the water purification device (10) according to any one of claims 2 to 7, characterized in that: The cooling device (13) further comprises a cooling fan, wherein an air outlet of the cooling fan faces the water supply pipe (12).

10. A water purification device (10), characterized in that: The water purification device (10) comprises a water inlet assembly of the water purification device (10) according to any one of claims 1 to 9, and further comprises a water purifier (11), wherein the water purifier (11) is provided with a raw water inlet part (111).

11. A pure drinking water heater, characterized in that: The drinking water heater comprises the water purification device (10) as claimed in claim 10, and further comprises a water heater main unit and a casing, the water heater main unit is provided with a hot water outlet, the hot water use point is connected to the hot water outlet, and the water heater main unit and the water purification device (10) are arranged in the casing.

12. A zero cooling water system, characterized in that: The zero-cold water system comprises the water purification device (10) as claimed in claim 10, and further comprises a water heater (30) and a circulation pipeline (20), wherein a water inlet and a water outlet of the water heater (30) are respectively connected to the circulation pipeline (20), and the circulation pipeline (20) is provided with at least one hot water use point and a water inlet pipe (22).

Images