Self-cleaning water purifier

Abstract

The invention discloses a self-cleaning water purifier, and relates to the field of water purifier equipment. The self-cleaning water purifier comprises a heating device, the heating device comprises a heating pipeline and a first water outlet pipeline, and one end of the heating pipeline is connected with a water outlet of the water purifier through the first water outlet pipeline; one end of the cleaning pipeline is connected with a clean water inlet of the water purifier, the other end of the cleaning pipeline is connected with a water outlet of the water purifier, and the cleaning pipeline is communicated with the first water outlet pipeline to form an intersection point. Through the pipeline design of the heating device and the cleaning pipeline, drinking water heated by the heating pipeline can flow out of the water outlet, clean water can be introduced into the heating pipeline through the cleaning pipeline, and after scale on the inner wall of the heating pipeline is cleaned, the clean water and the scale can flow out of the water outlet along the second connecting pipeline and the water drainage pipeline. Therefore, the quality of drinking water of the water purifier is improved.

Description

Technical Field

[0001] The invention relates to the field of water purifier equipment, in particular to a self-cleaning water purifier. Background Art

[0002] A water purifier is a device specially designed to remove impurities and harmful substances from water. It mainly removes suspended matter, sediment, heavy metals, bacteria, viruses, organic compounds, etc. in water through the filter device installed inside it. These substances will also remain inside the filter device, so the filter device also needs to be cleaned regularly to avoid affecting the quality of drinking water.

[0003] In order to facilitate the cleaning of the filter device, some self-cleaning filter devices already exist in the prior art, such as the invention patent with publication number: CN115804983B discloses a self-cleaning continuous water purification filter element and a self-cleaning method, including a filter cartridge, a first cleaning brush, a first filter element, a second cleaning brush, a second filter element, a central tube, an upper inner cover, an upper outer cover, a lower inner cover and a lower outer cover, a first filter chamber is between the first cleaning brush and the second cleaning brush, a second filter chamber is between the second cleaning brush and the central tube, the water inlet end is alternately connected with the first filter chamber and the second filter chamber by means of the upper inner cover, the water outlet end is alternately connected with the first filter chamber and the second filter chamber by means of the lower outer cover, the lower inner cover and the central tube, the drainage end is alternately connected with the first filter chamber and the second filter chamber by means of the lower inner cover, and at least one of the first filter chamber and the second filter chamber is in a water purification state. Through the above technical scheme, the technical problem that the water purification filter element in the prior art needs to be disassembled and cleaned and the water purifier cannot purify water continuously due to cleaning is solved.

[0004] However, in order to meet more demands, the existing water purifiers integrate the filtering device, the heating device and the refrigeration device. The heating device mainly heats the drinking water through the heating pipeline. During the long-term heating of drinking water by the heating pipeline, scale will be generated on the inner wall of the heating pipeline. The scale will also flow out from the water outlet along the outlet pipe of the heating pipeline, thereby reducing the quality of drinking water from the water purifier. Summary of the invention

[0005] In view of the defects existing in the prior art, the technical problem solved by the present invention is: how to improve the quality of drinking water in a water purifier.

[0006] To achieve the above purpose, the present invention provides a self-cleaning water purifier, comprising: A heating device, comprising a heating pipeline and a first water outlet pipeline, wherein one end of the heating pipeline is connected to the water outlet of the water purifier through the first water outlet pipeline; A cleaning pipeline, one end of which is connected to the cleaning water inlet of the water purifier, and the other end of which is connected to the drain outlet of the water purifier, and the cleaning pipeline is connected to the first water outlet pipeline to form an intersection; The intersection divides the cleaning pipeline into a first connecting pipeline and a drainage pipeline. The first connecting pipeline is located between the intersection and the cleaning water inlet, and the drainage pipeline is located between the intersection and the drainage outlet. A first water stop valve is provided on the first connecting pipeline, and a second water stop valve is provided on the drainage pipeline. The intersection divides the first water outlet pipeline into a second connecting pipeline and a hot water outlet pipeline. The second connecting pipeline is located between the intersection and the heating pipeline, and the hot water outlet pipeline is located between the intersection and the water outlet. A third water stop valve is provided on the second connecting pipeline, and a fourth water stop valve is provided on the hot water outlet pipeline.

[0007] By adopting the above technical solution, clean water can be introduced into the heating pipeline through the cleaning pipeline. After cleaning the scale on the inner wall of the heating pipeline, the clean water and scale can be discharged along the second connecting pipeline and the drainage pipeline and finally discharged from the drain outlet, thereby improving the quality of drinking water in the water purifier.

[0008] In one embodiment, the heating device also includes a first water inlet pipeline and a first booster pump. The first water inlet pipeline is arranged between the water storage tank and the heating pipeline of the water purifier, and the first booster pump is arranged between the first water inlet pipeline and the heating pipeline, so that the drinking water in the water storage tank enters the heating pipeline through the first booster pump; a descaling agent injector is arranged on the first connecting pipeline to realize the injection of descaling agent into the first connecting pipeline.

[0009] By adopting the above technical solution, it is easy to discharge clean water and scale from the heating pipeline and flush the inner wall of the heating pipeline; at the same time, the clean water carries the descaling agent into the interior of the heating pipeline, further improving the cleaning effect.

[0010] In one embodiment, the water purifier further includes a filtering device, which includes a pre-filtering component and a post-filtering component to filter the tap water into drinking water and store it in a water tank.

[0011] By adopting the above technical solution, the filtering effect of the water purifier is improved.

[0012] In one embodiment, a second water inlet pipeline is connected to the pre-filter assembly, and the other end of the second water inlet pipeline is connected to the first water inlet pipeline to form a first connection point, and the first connection point is located between the first water stop valve and the clean water inlet; A second booster pump is arranged on the second water inlet pipeline, and a fifth water stop valve is arranged on the second water inlet pipeline between the second booster pump and the first connection point.

[0013] By adopting the above technical solution, clean water can enter the second water inlet pipe and flush the interior of the pre-filter assembly through the second booster pump; at the same time, it will not affect the cleaning work of the heating pipe, and the pre-filter assembly can be self-cleaning.

[0014] In one embodiment, a second water outlet pipe is connected to the pre-filter assembly, and the other end of the second water outlet pipe is connected to the drain pipe to form a second connection point. The second connection point is located between the second water stop valve and the drain port, and a sixth water stop valve is provided on the second water outlet pipe.

[0015] By adopting the above technical solution, the clean water and impurities in the pre-filter assembly can also be discharged from the drain outlet, reducing the internal pipes and required drain outlets of the water purifier, thereby reducing the size of the water purifier.

[0016] In one embodiment, a wastewater discharge pipeline is connected to the post-filter assembly, and the other end of the wastewater discharge pipeline is connected to the drainage pipeline to form a third connection point. The third connection point is located between the second water stop valve and the drain outlet, and a seventh water stop valve is provided on the wastewater discharge pipeline.

[0017] By adopting the above technical solution, it is convenient to discharge the wastewater generated by the post-filter component during filtration from the drain outlet, further reducing the internal pipes and required drain outlets of the water purifier, thereby reducing the size of the water purifier.

[0018] In one embodiment, the water purifier also includes a refrigeration device, which includes a refrigeration shell, a refrigeration pipeline and a semiconductor refrigeration component; the refrigeration shell is fixed to the inside of the water purifier, the refrigeration pipeline is arranged inside the refrigeration shell, one end of the refrigeration pipeline is connected to the water tank through a third water inlet pipeline, and the other end of the refrigeration pipeline is connected to the water outlet through a third water outlet pipeline; the semiconductor refrigeration component is arranged on the refrigeration shell to realize refrigeration of the refrigeration pipeline.

[0019] By adopting the above technical solution, the drinking water cooling function of the water purifier is realized.

[0020] In one embodiment, the first connecting pipeline includes a fourth water inlet pipeline, a circulating water circuit and a fourth water outlet pipeline. The circulating water circuit is arranged on the refrigeration pipeline along the water flow direction in the refrigeration pipeline to enable the semiconductor refrigeration component to cool the refrigeration pipeline and the circulating water circuit at the same time. The fourth water inlet pipeline is arranged between the circulating water circuit and the clean water inlet, the fourth water outlet pipeline is arranged between the circulating water circuit and the intersection, and the first water stop valve is arranged on the fourth water outlet pipeline.

[0021] By adopting the above technical solution, when the semiconductor refrigeration component cools the refrigeration pipeline, the drinking water entering the refrigeration pipeline is cooled due to the temperature of the refrigeration pipeline. At the same time, the semiconductor refrigeration component cools the circulating water circuit, causing the temperature of the circulating water flowing inside the circulating water circuit to cool down. Since the length of the circulating water circuit is much greater than the length of the refrigeration pipeline, the cooling time of the circulating water is longer to reach a lower temperature. Therefore, the circulating water can further cool the refrigeration pipeline, increase the cooling rate of the drinking water, and thus improve the cooling effect of the water purifier.

[0022] In one embodiment, the refrigeration pipeline is a U-shaped pipeline, the starting point of the circulating water circuit is the connection point between the refrigeration pipeline and the fourth water inlet pipeline, and part of the fourth water inlet pipeline is located inside the refrigeration shell to enable the semiconductor refrigeration component to cool the fourth water inlet pipeline.

[0023] By adopting the above technical solution, not only the refrigeration pipeline and the circulating water circuit are refrigerated, but also the fourth water inlet pipeline is refrigerated, thereby increasing the cooling time of the circulating water, thereby further improving the refrigeration effect of the wall-mounted pipeline water dispenser.

[0024] In one embodiment, the refrigeration shell includes a first shell and a second shell, the first shell and the second shell are detachably connected, and a mounting port is provided on the second shell, and the semiconductor refrigeration component is installed on the mounting port to realize direct cooling of the refrigeration pipeline and the circulating water circuit.

[0025] By adopting the above technical solution, the shell obstruction between the semiconductor refrigeration component and the pipeline that needs to be refrigerated is avoided, thereby further improving the refrigeration effect of the wall-mounted pipeline water dispenser; at the same time, it is convenient for the inspection, maintenance and replacement of the internal structure of the refrigeration device.

[0026] In summary, the present invention includes at least one of the following beneficial technical effects: 1. Through the pipeline design of the heating device and the cleaning pipeline, the pipeline can not only realize that the drinking water heated by the heating pipeline flows out from the water outlet, but also can pass clean water into the heating pipeline through the cleaning pipeline. After cleaning the scale on the inner wall of the heating pipeline, the clean water and scale can be discharged from the drain outlet along the second connecting pipeline and the drainage pipeline, thereby improving the quality of drinking water in the water purifier; 2. Through the pipeline design on the pre-filter component and the post-filter component, the self-cleaning inside the pre-filter component and the discharge of wastewater generated by the post-filter component can be realized. At the same time, the pipelines inside the water purifier and the required drain outlets are reduced, thereby reducing the size of the water purifier; 3. When the semiconductor refrigeration component cools the refrigeration pipeline, the drinking water entering the refrigeration pipeline is cooled due to the temperature of the refrigeration pipeline. At the same time, the semiconductor refrigeration component cools the circulating water circuit, causing the temperature of the circulating water flowing inside the circulating water circuit to drop. Since the length of the circulating water circuit is much longer than the length of the refrigeration pipeline, the cooling time of the circulating water is longer to reach a lower temperature. Therefore, the circulating water can further cool the refrigeration pipeline, increase the cooling rate of the drinking water, and thus improve the cooling effect of the water purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a self-cleaning water purifier according to an embodiment of the present invention; Figure 2This is a piping diagram of a self-cleaning water purifier according to an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a heating device according to an embodiment of the present invention; Figure 4 It is an exploded view of a refrigeration device according to an embodiment of the present invention.

[0028] In the figure: 1-heating pipeline, 2-pre-filter assembly, 3-post-filter assembly, 4-refrigeration device, 401-first shell, 402-second shell, 403-refrigeration pipeline, 404-installation port, 405-semiconductor refrigeration assembly, 5-first connecting pipeline, 501-fourth water inlet pipeline, 502-circulating water circuit, 503-fourth water outlet pipeline, 6-drainage pipeline, 7-second connecting pipeline, 8-hot water outlet pipeline, 9-first water stop valve, 10- Second water-stop valve, 11-third water-stop valve, 12-fourth water-stop valve, 13-clean water inlet, 14-drainage outlet, 15-water outlet, 16-descaling agent dispenser, 17-second water inlet pipeline, 18-second booster pump, 19-fifth water-stop valve, 20-second water outlet pipeline, 21-sixth water-stop valve, 22-wastewater discharge pipeline, 23-seventh water-stop valve, 24-first water inlet pipeline, 25-first booster pump, 26-water storage tank, 27-third booster pump. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0030] The self-cleaning water purifier in the embodiment of the present invention is shown in Figure 1 , 2 As shown, the self-cleaning water purifier includes a heating device, which includes a heating pipeline 1 and a first water outlet pipeline, and one end of the heating pipeline 1 is connected to the water outlet 15 of the water purifier through the first water outlet pipeline; A cleaning pipeline, one end of which is connected to the cleaning water inlet 13 of the water purifier, and the other end of which is connected to the drain outlet 14 of the water purifier, and the cleaning pipeline is connected to the first water outlet pipeline to form an intersection; The intersection divides the cleaning pipeline into a first connecting pipeline 5 and a drainage pipeline 6. The first connecting pipeline 5 is located between the intersection and the cleaning water inlet 13, and the drainage pipeline 6 is located between the intersection and the drainage outlet 14. The first connecting pipeline 5 is provided with a first water stop valve 9, and the drainage pipeline 6 is provided with a second water stop valve 10. The intersection divides the first water outlet pipeline into a second connecting pipeline 7 and a hot water outlet pipeline 8. The second connecting pipeline 7 is located between the intersection and the heating pipeline 1, and the hot water outlet pipeline 8 is located between the intersection and the water outlet 15. A third water stop valve 11 is provided on the second connecting pipeline 7, and a fourth water stop valve 12 is provided on the hot water outlet pipeline 8.

[0031] By adopting the above technical solution, clean water can be introduced into the heating pipeline 1 through the cleaning pipeline. After cleaning the scale on the inner wall of the heating pipeline 1, the clean water and scale can be discharged along the second connecting pipeline 7 and the drainage pipeline 6 and finally discharged from the drain port 14, thereby improving the quality of drinking water in the water purifier.

[0032] It can be seen that the present invention marks the connection point where the cleaning pipeline and the first water outlet pipeline are connected to the two pipelines as the intersection point, and uses the intersection point as the dividing point to divide the cleaning pipeline into the first connecting pipeline 5 and the drainage pipeline 6, and divide the first water outlet pipeline into the second connecting pipeline 7 and the hot water outlet pipeline 8, and each pipeline is provided with a water stop valve; When the heating pipeline 1 needs to be descaled, the first water stop valve 9 and the third water stop valve 11 are opened, and the second water stop valve 10 and the fourth water stop valve 12 are closed at the same time. Clean water (which can be tap water, drinking water, or circulating water, as long as it is harmless to the human body) connected from the clean water inlet 13 flows along the first connecting pipeline 5 and the second connecting pipeline 7, and finally enters the heating pipeline 1 until the amount of clean water in the heating pipeline 1 reaches a threshold value, and the first water stop valve 9 is closed; if the water temperature is too low to achieve the best cleaning effect, the heating pipeline 1 inside it can be heated by the heater assembly to increase the temperature of the clean water, thereby achieving a better descaling effect; When it is necessary to discharge the clean water and residue in the heating pipeline 1, the second water stop valve 10 is opened, and the clean water and residue in the heating pipeline 1 are discharged from the drain port 14 along the second connecting pipeline 7 and the drain pipeline 6; When drinking water needs to be heated and flows out from the water outlet 15, the third water stop valve 11 and the fourth water stop valve 12 are opened, and the first water stop valve 9 and the second water stop valve 10 are closed; When it is necessary to discharge the excess cleaning water in the cleaning pipeline, the first water stop valve 9 and the second water stop valve 10 are opened, and the third water stop valve 11 and the fourth water stop valve 12 are closed.

[0033] Preferably, see Figure 2 , 3 As shown, the heating device also includes a first water inlet pipeline 24 and a first booster pump 25. The first water inlet pipeline 24 is arranged between the water tank 26 of the water purifier and the heating pipeline 1, and the first booster pump 25 is arranged between the first water inlet pipeline 24 and the heating pipeline 1, so that the drinking water in the water tank 26 can enter the heating pipeline 1 through the first booster pump 25; a descaling agent injector 16 is arranged on the first connecting pipeline 5 to realize the injection of descaling agent into the first connecting pipeline 5.

[0034] Specifically, the drinking water in the water tank 26 is added to the first water inlet pipe 24, the drinking water enters from the inlet end of the first booster pump 25, and then flows out from the outlet end of the first booster pump 25, thereby realizing the pressurization of the drinking water, and the pressurized drinking water rushes into the heating pipe 1, and flows along the second connecting pipe 7 and the drainage pipe 6 with the clean water and residue in the heating pipe 1, and is finally discharged from the drain port 14 until the clean water and residue in the heating pipe 1 are completely discharged; a descaling agent injector 16 is provided on the first connecting pipe 5, and the descaling agent is stored in the descaling agent injector 16, and when the clean water flows into the heating pipe 1, the descaling agent is injected into the first connecting pipe 5.

[0035] It should be noted that, in order to ensure the complete discharge of clean water and residues, the quality of drinking water discharged from the drain outlet 14 along the second connecting pipeline 7 and the drain pipeline 6 can be detected; Descaling agents are preferably in solid form for easy storage and injection, such as beads or balls, which can gradually release anti-scaling chemicals into the water. For example, Kaidefei polyphosphate balls are in the form of glass balls and contain food-grade additives. In addition, KL-102 solid scale remover and LX-056A solid descaling agent are also common solid descaling agents. They completely remove scale from the equipment through dissolution and are safe for materials such as stainless steel and copper.

[0036] Preferably, see Figure 1 As shown, the water purifier also includes a filtering device, which includes a pre-filtering component 2 and a post-filtering component 3 to filter tap water into drinking water and store it in a water storage tank 26.

[0037] Specifically, the tap water first enters the pre-filter component 2 for the first filtration to remove large particles of impurities in the tap water, such as mud, rust, etc.; the treated tap water passes through the third booster pump 27 and enters the post-filter component 3 for the second filtration to remove bacteria, suspended matter and other impurities to form drinking water; the drinking water flows into the water storage tank 26 and is stored.

[0038] For further information, see Figure 2 As shown, a specific structure of self-cleaning of the pre-filter assembly 2 is provided: The pre-filter assembly 2 is connected to a second water inlet pipeline 17, and the other end of the second water inlet pipeline 17 is connected to the first water inlet pipeline 24 to form a first connection point, and the first connection point is located between the first water stop valve 9 and the clean water inlet 13; A second booster pump 18 is provided on the second water inlet pipeline 17 , and a fifth water stop valve 19 is provided on the second water inlet pipeline 17 between the second booster pump 18 and the first connection point.

[0039] Specifically, when the pre-filter assembly 2 needs to be cleaned, the fifth water stop valve 19 is opened and the first water stop valve 9 is closed. The clean water introduced from the clean water inlet 13 flows along the first water inlet pipe 24 and enters the second water inlet pipe 17. After the clean water is pressurized by the second booster pump 18, it is flushed into the interior of the pre-filter assembly 2. After cleaning is completed, the clean water and impurities inside the pre-filter assembly 2 are discharged.

[0040] For further information, see Figure 2 As shown, a second water outlet pipe 20 is connected to the pre-filter assembly 2, and the other end of the second water outlet pipe 20 is connected to the drain pipe 6 to form a second connection point. The second connection point is located between the second water stop valve 10 and the drain port 14, and a sixth water stop valve 21 is arranged on the second water outlet pipe 20.

[0041] Specifically, when it is necessary to discharge the clean water and impurities inside the pre-filter assembly 2, open the sixth water stop valve 21 and close the second water stop valve 10, and the clean water and impurities flow along the second water outlet pipe 20 and the drainage pipe 6, and are finally discharged from the drain port 14; the clean water and impurities in the pre-filter assembly 2 can also be discharged from the drain port 14, reducing the pipes inside the water purifier and the required drain port 14, thereby reducing the volume of the water purifier.

[0042] Preferably, see Figure 2 As shown, a specific structure of a post-filter assembly 3 for draining wastewater is provided: A wastewater discharge pipe 22 is connected to the post-filter assembly 3, and the other end of the wastewater discharge pipe 22 is connected to the drain pipe 6 to form a third connection point. The third connection point is located between the second water stop valve 10 and the drain outlet 14. A seventh water stop valve 23 is provided on the wastewater discharge pipe 22.

[0043] Specifically, when it is necessary to discharge the waste water in the post-filter assembly 3, the seventh water stop valve 23 is opened and the second water stop valve 10 is closed. The waste water flows along the waste water discharge pipe 22 and the drainage pipe 6, and is finally discharged from the drain outlet 14, further reducing the pipes inside the water purifier and the required drain outlet 14, thereby reducing the volume of the water purifier.

[0044] It should be noted that the post-filter needs to have its filter element replaced regularly, especially for reverse osmosis water purifiers. The cost of replacing the filter element is high, and it needs to be plugged in, which will produce wastewater.

[0045] Preferably, see Figure 1 , 4As shown, the water purifier also includes a refrigeration device 4, which includes a refrigeration shell, a refrigeration pipeline 403 and a semiconductor refrigeration component 405; the refrigeration shell is fixed to the inside of the water purifier, the refrigeration pipeline 403 is arranged inside the refrigeration shell, one end of the refrigeration pipeline 403 is connected to the water storage tank 26 through a third water inlet pipeline, and the other end is connected to the water outlet 15 through a third water outlet pipeline; the semiconductor refrigeration component 405 is arranged on the refrigeration shell to realize refrigeration of the refrigeration pipeline 403.

[0046] For further information, see Figure 4 As shown, the first connecting pipeline 5 includes a fourth water inlet pipeline 501, a circulating water circuit 502 and a fourth water outlet pipeline 503. The circulating water circuit 502 is arranged on the refrigeration pipeline 403 along the water flow direction in the refrigeration pipeline 403, so that the semiconductor refrigeration component 405 can simultaneously cool the refrigeration pipeline 403 and the circulating water circuit 502. The fourth water inlet pipeline 501 is arranged between the circulating water circuit 502 and the clean water inlet 13, the fourth water outlet pipeline 503 is arranged between the circulating water circuit 502 and the intersection, and the first water stop valve 9 is arranged on the fourth water outlet pipeline 503.

[0047] Specifically, by turning on the semiconductor refrigeration component 405, the refrigeration pipeline 403 is refrigerated, and the drinking water in the water storage tank 26 is passed into the refrigeration pipeline 403 through the third water inlet pipeline, so the refrigeration pipeline 403 can reduce the temperature of the drinking water therein; at the same time, the semiconductor refrigeration component 405 cools the circulating water circuit 502, resulting in a decrease in the temperature of the circulating water flowing in the circulating water circuit 502. Since the length of the circulating water circuit 502 is much larger than the length of the refrigeration pipeline 403, the cooling time of the circulating water is longer, and the temperature of the circulating water is lower than the temperature of the drinking water. Therefore, the circulating water can further cool the refrigeration pipeline 403, thereby increasing the cooling rate of the drinking water, thereby improving the cooling effect of the water purifier.

[0048] It should be noted that the above-mentioned circulating water is clean water introduced from the clean water inlet 13, that is, the clean water can not only clean the internal structure of the water purifier, but also be used as circulating water circulating in the circulation pipeline to improve the refrigeration effect of the refrigeration device 4.

[0049] Preferably, see Figure 4 As shown, the refrigeration pipeline 403 is a U-shaped pipeline, the starting point of the circulating water circuit 502 is the connection point between the refrigeration pipeline 403 and the fourth water inlet pipeline 501, and part of the fourth water inlet pipeline 501 is located inside the refrigeration shell to enable the semiconductor refrigeration component 405 to cool the fourth water inlet pipeline 501.

[0050] The drinking water in the water tank 26 is introduced into one end of the U-shaped pipe through the third water inlet pipe and then flows out from the other end. A circulating water circuit 502 is arranged around the starting part to the ending part of the U-shaped pipe. The initial surrounding position of the circulating water circuit 502 is the end of the U-shaped pipe. Therefore, part of the fourth water inlet pipe 501 will be located on the side of the U-shaped pipe, that is, inside the refrigeration shell, and the semiconductor refrigeration component 405 is arranged on the side of the U-shaped pipe. Therefore, the semiconductor refrigeration component 405 not only cools the refrigeration pipe 403 and the circulating water circuit 502, but also cools the fourth water inlet pipe 501, increasing the flow path of the circulating water in the refrigerated state, thereby increasing the cooling time of the circulating water, thereby further improving the refrigeration effect of the water purifier.

[0051] Preferably, see Figure 4 As shown, the refrigeration shell includes a first shell 401 and a second shell 402, the first shell 401 and the second shell 402 are detachably connected, the second shell 402 is provided with a mounting port 404, and the semiconductor refrigeration component 405 is installed on the mounting port 404 to realize direct cooling of the refrigeration pipeline 403 and the circulating water circuit 502.

[0052] Specifically, the refrigeration shell is made into two parts, a first shell 401 and a second shell 402, and the first shell 401 and the second shell 402 can be connected by a clamp or a bolt assembly to achieve a detachable connection between the first shell 401 and the second shell 402, which is convenient for installation and disassembly, and the refrigeration pipeline 403 and the circulating water circuit 502 are fixed inside the refrigeration shell; and an installation port 404 is opened on the second shell 402 to avoid shell obstruction between the semiconductor refrigeration component 405 and the pipeline to be refrigerated, thereby further improving the refrigeration effect of the wall-mounted pipeline drinking machine; at the same time, it is convenient for the inspection, maintenance and replacement of the internal structure of the refrigeration device 4.

[0053] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A self-cleaning water purifier, characterized in that: It includes: A heating device, comprising a heating pipeline (1) and a first water outlet pipeline, wherein one end of the heating pipeline (1) is connected to a water outlet (15) of a water purifier via the first water outlet pipeline; A cleaning pipeline, one end of which is connected to the cleaning water inlet (13) of the water purifier, and the other end of which is connected to the water outlet (14) of the water purifier, and the cleaning pipeline is in communication with the first water outlet pipeline to form an intersection; The intersection divides the cleaning pipeline into a first connecting pipeline (5) and a drainage pipeline (6); the first connecting pipeline (5) is located between the intersection and the cleaning water inlet (13); the drainage pipeline (6) is located between the intersection and the drainage outlet (14); a first water stop valve (9) is provided on the first connecting pipeline (5); and a second water stop valve (10) is provided on the drainage pipeline (6); The intersection divides the first water outlet pipeline into a second connecting pipeline (7) and a hot water outlet pipeline (8); the second connecting pipeline (7) is located between the intersection and the heating pipeline (1); the hot water outlet pipeline (8) is located between the intersection and the water outlet (15); a third water stop valve (11) is provided on the second connecting pipeline (7); and a fourth water stop valve (12) is provided on the hot water outlet pipeline (8).

2. The self-cleaning water purifier according to claim 1, characterized in that: The heating device further comprises a first water inlet pipeline (24) and a first booster pump (25); the first water inlet pipeline (24) is arranged between a water storage tank (26) of the water purifier and the heating pipeline (1); the first booster pump (25) is arranged between the first water inlet pipeline (24) and the heating pipeline (1), so that drinking water in the water storage tank (26) enters the heating pipeline (1) through the first booster pump (25); and a descaling agent injector (16) is arranged on the first connecting pipeline (5) so that the descaling agent can be injected into the first connecting pipeline (5).

3. The self-cleaning water purifier according to claim 1, characterized in that: The water purifier also includes a filtering device, which includes a pre-filtering component (2) and a post-filtering component (3) to filter tap water into drinking water and store it in a water storage tank (26).

4. The self-cleaning water purifier according to claim 3, characterized in that: The pre-filter assembly (2) is connected to a second water inlet pipeline (17), the other end of the second water inlet pipeline (17) being connected to the first water inlet pipeline (24) to form a first connection point, the first connection point being located between the first water stop valve (9) and the clean water inlet (13); A second booster pump (18) is provided on the second water inlet pipeline (17), and a fifth water stop valve (19) is provided on the second water inlet pipeline (17) between the second booster pump (18) and the first connection point.

5. The self-cleaning water purifier according to claim 4, characterized in that: The pre-filter assembly (2) is connected to a second water outlet pipeline (20), the other end of the second water outlet pipeline (20) is connected to a drainage pipeline (6) to form a second connection point, the second connection point is located between the second water stop valve (10) and the drainage port (14), and a sixth water stop valve (21) is provided on the second water outlet pipeline (20).

6. The self-cleaning water purifier according to claim 3, characterized in that: The post-filter assembly (3) is connected to a wastewater discharge pipeline (22), the other end of which is connected to a drainage pipeline (6) to form a third connection point, the third connection point being located between the second water stop valve (10) and the drainage port (14), and a seventh water stop valve (23) being provided on the wastewater discharge pipeline (22).

7. The self-cleaning water purifier according to claim 1, characterized in that: The water purifier further comprises a refrigeration device (4), the refrigeration device (4) comprising a refrigeration shell, a refrigeration pipeline (403) and a semiconductor refrigeration component (405); the refrigeration shell is fixed inside the water purifier, the refrigeration pipeline (403) is arranged inside the refrigeration shell, one end of the refrigeration pipeline (403) is connected to the water storage tank (26) through a third water inlet pipeline, and the other end of the refrigeration pipeline (403) is connected to the water outlet (15) through a third water outlet pipeline; the semiconductor refrigeration component (405) is arranged on the refrigeration shell to realize refrigeration of the refrigeration pipeline (403).

8. The self-cleaning water purifier according to claim 7, characterized in that: The first connecting pipeline (5) comprises a fourth water inlet pipeline (501), a circulating water circuit (502) and a fourth water outlet pipeline (503); the circulating water circuit (502) is arranged on the refrigeration pipeline (403) along the water flow direction in the refrigeration pipeline (403), so that the semiconductor refrigeration component (405) can cool the refrigeration pipeline (403) and the circulating water circuit (502) at the same time; the fourth water inlet pipeline (501) is arranged between the circulating water circuit (502) and the clean water inlet (13); the fourth water outlet pipeline (503) is arranged between the circulating water circuit (502) and the intersection; and the first water stop valve (9) is arranged on the fourth water outlet pipeline (503).

9. The self-cleaning water purifier according to claim 8, characterized in that: The refrigeration pipeline (403) is a U-shaped pipeline, the starting point of the circulating water circuit (502) is the connection point between the refrigeration pipeline (403) and the fourth water inlet pipeline (501), and part of the fourth water inlet pipeline (501) is located inside the refrigeration shell, so that the semiconductor refrigeration component (405) can cool the fourth water inlet pipeline (501).

10. The self-cleaning water purifier according to claim 8, characterized in that: The refrigeration shell comprises a first shell (401) and a second shell (402); the first shell (401) and the second shell (402) are detachably connected; a mounting opening (404) is provided on the second shell (402); a semiconductor refrigeration component (405) is mounted on the mounting opening (404) to achieve direct refrigeration of the refrigeration pipeline (403) and the circulating water circuit (502).

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