Water purifier

Abstract

The invention belongs to the technical field of drinking water purification, and particularly relates to a water purifier which comprises a shell of the water purifier, a water tank is arranged in the shell, a filter element and a refrigeration unit are further arranged in the shell, the filter element and the water tank are connected through a pipeline unit, and a switch unit used for controlling the pipeline unit to flow water and control water outlet is arranged on the pipeline unit. The water inlet pipe of the pipeline unit is provided with a sterilizer, the sterilizer comprises a transparent quartz tube arranged in the inner cavity of the shell, the two ends of the transparent quartz tube are connected with the water inlet pipe through quick connectors, and the inner wall of the shell is further provided with an ultraviolet lamp tube. According to the water purifier, pure mechanical switch control is adopted, so that the whole water purifier is more power-saving, the situation that water cannot circulate is avoided, the totally-closed water tank controls water outlet through internal pressure, the water level does not need to be judged, the use effect is good, meanwhile, the disinfection and sterilization device is installed on the water inlet pipeline, water entering the water purifier is sterilized and disinfected through ultraviolet rays, and the water purification effect is good. And the quality of drinking water is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drinking water purification, and specifically to a water purifier. Background Art

[0002] The tap water for daily drinking has undergone various cleaning, sterilization and disinfection means, and the water quality after leaving the factory can meet the national health standards. After passing through long pipelines and secondary pressurized water tanks, it flows into thousands of households. Before flowing into the households, the long pipelines pass through complex terrains and roads. Some pipelines are in disrepair, some water pipes cross with sewage pipes, and some water pipes in the building even have to pass through the toilet before reaching the kitchen. Due to the leakage around the water pipes and the rarely cleaned and disinfected secondary pressurized water tanks, the water tanks cannot be spotless, and many reasons such as rust in the water pipes will cause secondary pollution of the water quality. A water purifier is an effective device for treating water quality. A water purifier is an appliance that filters water to remove impurities, and it is widely used in families.

[0003] In the existing water purifiers, the flow of water in the pipeline usually needs to be driven by a solenoid valve, which not only consumes electricity, but also is inconvenient to install. It is easy to cause poor water flow due to the failure of the solenoid valve, and the solenoid valve needs to be frequently overhauled, which causes trouble to the daily use of users. Moreover, in the existing water purifiers, a float device for controlling the water level usually needs to be placed in the water tank, resulting in more structural components in the water purifier, complex installation, and at the same time, using a filter element to filter water, it cannot perform sterilization and disinfection, and is not convenient to use. Summary of the Invention

[0004] (I) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a water purifier, which solves the problems that the solenoid valve installed in the pipeline is prone to failure, causing trouble in daily use, the water level control structure is complex, and at the same time, the filter element cannot be sterilized and disinfected, and is not convenient to use.

[0005] (II) Technical Solutions In order to achieve the above object, the present invention specifically adopts the following technical solutions: A water purifier includes the outer shell of the water purifier, a water tank is arranged inside the outer shell, a filter element and a refrigeration unit are also arranged inside the outer shell. The filter element and the water tank are connected through a pipeline unit. A switch unit for controlling the water flow of the pipeline unit and controlling the water output is arranged on the pipeline unit. A sterilizer is arranged on the water inlet pipe of the pipeline unit. The sterilizer includes a transparent quartz tube arranged in the inner cavity of the shell. Both ends of the transparent quartz tube are connected to the water inlet pipe through quick connectors. An ultraviolet lamp tube is also arranged on the inner wall of the shell; Among them, the water tank serves as a temporary water storage component of the water purifier, so that the water purifier can take drinking water at any time. The filter element is used to filter the water entering the water purifier, remove impurities in the water, and improve the quality of drinking water. The refrigeration unit is used to cool the water entering the water tank after filtration, ensuring that the user can directly take cold water, expand the scope of application of the water purifier, and improve the convenience of use. The piping unit is used to connect the various components of the water purifier together, so that water can smoothly enter the water purifier and be stored in the water tank after purification for easy access at any time. The switch unit is used for the user to control the water purifier at any time, and then smoothly take drinking water. The ultraviolet lamp of the sterilizer is used to irradiate the transparent quartz tube, so as to effectively sterilize and disinfect the water flowing in the transparent quartz tube into the water purifier, thereby improving the quality of drinking water.

[0006] Furthermore, the ultraviolet lamp tube is fixedly connected to the inner wall of the shell through a support frame and distributed in a circular array around the outer periphery of the transparent quartz tube, and the support feet integrally arranged at the bottom of the shell are fixedly connected to the inner wall at the corresponding position of the shell through screws, and end covers are arranged at both ends of the shell, and the quick-connect connector is arranged on the end cover in a through-type manner, and an electromagnetic flowmeter is arranged on the quick-connect connector at one end of the transparent quartz tube; The entire sterilizer is stably installed inside the shell to ensure that the ultraviolet lamp is stably installed in the shell, so that during operation, ultraviolet rays are irradiated to the transparent quartz tube, and the drinking water flowing in the transparent quartz tube is sterilized and disinfected by ultraviolet rays. The quick-plug connector is stably installed on the shell by using the end cover, so that it is stably connected to the end of the transparent quartz tube, thereby improving the convenience of connection between the water inlet pipe and the transparent quartz tube, so that the two can be quickly disassembled and assembled. The electromagnetic flowmeter is used to count the flow of drinking water in the transparent quartz tube. When drinking water flows inside the transparent quartz tube, the electromagnetic flowmeter monitors the flow in real time and transmits the data to the controller of the water purifier. Then, when the controller determines that drinking water has entered the water purifier, the controller outputs a command to start the ultraviolet lamp, and the drinking water flowing inside the transparent quartz tube is sterilized and disinfected by ultraviolet rays, thereby improving the quality of drinking water. A cleaning ring is also arranged inside the transparent quartz tube, a first magnetic ring is arranged inside the cleaning ring, the cleaning ring slides against the inner wall of the transparent quartz tube, and cleaning scrapers are integrally arranged on both sides, and a driving ring matching the cleaning ring is also arranged outside the transparent quartz tube, a second magnetic ring is arranged inside the driving ring, a threaded sleeve is arranged on the driving block integrally arranged at the lower part of the driving ring, and the threaded sleeve is threadedly connected to the screw rod, one end of the screw rod is fixedly connected to the output shaft of the servo motor, the screw rod is fixedly connected to the inner wall of the shell through a bracket, and is rotatably connected to the bracket through a bearing; Among them, the cleaning ring is used to clean the deposited debris accumulated on the inner wall of the transparent quartz tube pipeline, so as to ensure that the inside of the pipeline is clean and tidy, and ensure stable use for a long time. During the cleaning process, driven by the servo motor, the lead screw and the threaded sleeve cooperate, and the driving ring drives the cleaning ring to slide on the inner wall of the transparent quartz tube, scraping off the deposited debris accumulated on the inner wall of the pipeline, so as to smoothly achieve the purpose of cleaning the transparent quartz tube, ensuring that the water delivery pipeline is clean and tidy, and improving the quality of drinking water.

[0007] Furthermore, a key unit cooperating with the switch unit is provided on the housing. The key unit and the switch unit are connected through a switching valve. The switch unit includes a first switch for discharging direct drinking water and a second switch for replenishing water to the water tank and discharging cold water. The key unit includes a first key and a second key respectively connected and cooperating with the first switch and the second switch. The switching valve adopts a ballpoint pen switching valve. Among them, the switching valve adopts a ballpoint pen switching valve. Utilizing the elasticity of the key unit itself, different from the traditional mechanism of pressing to open and releasing to close, it realizes cyclic pressing of the switch. After the user presses to open, they can release their hand until they have received the required amount of water and then press the key unit to close.

[0008] Furthermore, the refrigeration unit includes a compressor and a refrigeration pipe connected to the compressor. The other end of the refrigeration pipe is wound around the outer wall of the water tank near the bottom.

[0009] Furthermore, the pipeline unit includes a water inlet pipe connected to the filter element and a filter element water outlet pipe. The filter element water outlet pipe is communicated with an inlet water three-way valve. The inlet water three-way valve is communicated with the first switch through a direct drinking water branch pipe, and the inlet water three-way valve is also communicated with the second switch through a water tank branch pipe. The water outlet end of the first switch is connected with a direct drinking water outlet pipe. The end of the direct drinking water outlet pipe is connected with a water outlet three-way valve. The water outlet three-way valve is communicated with the water tank through a water tank outlet pipe. The water outlet end of the water outlet three-way valve is also connected with a water outlet faucet. The water outlet end of the second switch is communicated with the water tank through a water tank inlet pipe. The water tank is provided with a water tank inlet and a water tank outlet. The water tank inlet is communicated with the water tank inlet pipe, and the water tank outlet is communicated with the water tank outlet pipe. An exhaust valve for exhausting gas is provided at the top of the water tank. A water distribution plate is provided near the top inside the water tank, and a cold water outlet conduit extending downward is provided on the water distribution plate. One end of the cold water outlet conduit is communicated with the water tank outlet, and the other end of the cold water outlet conduit extends to near the bottom of the water tank. The water tank inlet is arranged near the water distribution plate. A sewage discharge pipe for discharging waste water is communicated with the bottom of the water tank, and the other end of the sewage discharge pipe is communicated with the outside. Among them, the water tank is a fully enclosed structure, which can control the water output through internal pressure, eliminating the need for users to constantly judge the water level. It has a simple structure, is easy to install, has a low cost, and a good use effect. At the same time, it can also smoothly discharge the sewage in the water tank, keeping the inside of the water tank dry and clean, achieving the purpose of smooth use.

[0010] (III) Beneficial Effects Compared with the prior art, the present invention provides a water purifier, which has the following beneficial effects: In the present invention, the water inlet pipeline is controlled by a pure mechanical switch, and the solenoid valve is cancelled, making the whole more power-saving and avoiding the situation where water cannot flow due to solenoid valve failure. The fully enclosed water tank controls the water output through internal pressure, eliminating the need for users to constantly monitor the float device to judge the water level. It has a simple structure, is easy to install, has a low cost, and a good use effect. At the same time, a disinfection sterilizer is installed on the water inlet pipeline, and ultraviolet rays are used to disinfect the water entering the water purifier, further improving the quality of drinking water and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural view of the present invention Figure 1 ; Figure 2 is a schematic structural view of the present invention Figure 2 ; Figure 3 is a schematic structural view of the present invention Figure 3 ; Figure 4 is a schematic structural view of the disinfection sterilizer in the present invention; Figure 5 is a cross-sectional view of the disinfection sterilizer in the present invention; Figure 6 is of the present invention Figure 5 a magnified schematic view of part A; Figure 7 is a schematic structural view of the water tank in the present invention; Figure 8 is a cross-sectional view of the water tank in the present invention.

[0012] In the figure: 1, outer shell; 2, water tank; 3, compressor; 4, refrigeration pipe; 5, filter element; 6, first switch; 7, second switch; 8, first button; 9, second button; 10, water inlet pipe; 11, filter element outlet pipe; 12, water inlet three-way valve; 13, direct drinking water branch pipe; 14, water tank branch pipe; 15, direct drinking water outlet pipe; 16, water outlet three-way valve; 17, water tank outlet pipe; 18, water outlet faucet; 19, water tank inlet pipe; 20, water tank water inlet; 21, water tank water outlet; 22, exhaust valve; 23, water distribution plate; 24, cold water outlet conduit; 25, sewage pipe; 26, sterilizer; 261, housing; 2611, support feet; 2612, end cover; 262, quick connector; 263, electromagnetic flowmeter; 264, transparent quartz tube; 265, ultraviolet lamp tube; 266, lead screw; 267, servo motor; 268, cleaning ring; 2681, first magnetic ring; 269, driving ring; 2691, second magnetic ring; 2692, driving block; 2693, threaded sleeve. Detailed implementation manner

[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0014] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, an embodiment of the present invention provides a water purifier, which includes the housing 1 of the water purifier. Inside the housing 1, there is a water tank 2, which serves as a temporary water storage component of the water purifier, enabling the water purifier to access drinking water at any time. Inside the housing 1, there are also a filter element 5 and a refrigeration unit. The filter element 5 is used to filter the water entering the water purifier, remove impurities in the water, and improve the quality of drinking water. The refrigeration unit is used to cool the water that enters the water tank 2 after filtration, ensuring that users can directly access cold water, expanding the scope of application of the water purifier, and improving the convenience of use. The filter element 5 and the water tank 2 are connected through a pipeline unit. The pipeline unit is provided with a switch unit for controlling the water flow of the pipeline unit and controlling the water output. The pipeline unit is used to connect all components of the water purifier together, enabling water to smoothly enter the water purifier and be purified and stored in the water tank 2 for easy access at any time. The switch unit is used for users to control the water purifier at any time and then smoothly access drinking water. A sterilizer 26 is installed on the water inlet pipe 10 of the pipeline unit. The sterilizer 26 includes a transparent quartz tube 264 disposed in the inner cavity of the housing 261. Both ends of the transparent quartz tube 264 are connected to the water inlet pipe 10 through quick connectors 262. An ultraviolet lamp tube 265 is also installed on the inner wall of the housing 261. The ultraviolet lamp tube 265 is used to irradiate the transparent quartz tube 264, thereby effectively sterilizing and disinfecting the water flowing into the water purifier in the transparent quartz tube 264 and improving the quality of drinking water.

[0015] As Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, in some embodiments, the ultraviolet lamp tube 265 is fixedly connected to the inner wall of the housing 261 through a support frame and is distributed in an annular array around the outer periphery of the transparent quartz tube 264, ensuring that the ultraviolet lamp tube 265 is stably installed in the housing 261. Thus, during operation, ultraviolet rays are irradiated onto the transparent quartz tube 264, and the ultraviolet rays are used to sterilize the drinking water flowing in the transparent quartz tube 264. When there is drinking water flowing inside the transparent quartz tube 264, the electromagnetic flowmeter 263 monitors the flow rate in real time and transmits the data to the controller built in the water purifier. Subsequently, when the controller determines that drinking water has entered the water purifier, the controller outputs an instruction to turn on the operation of the ultraviolet lamp tube 265. By irradiating the transparent quartz tube 264 with ultraviolet rays, the drinking water flowing inside the transparent quartz tube 264 is sterilized, improving the quality of the drinking water. Moreover, the support feet 2611 integrally provided at the bottom of the housing 261 are fixedly connected to the inner wall at the corresponding part of the outer shell 1 through screws, facilitating the stable installation of the entire sterilizer 26 inside the outer shell 1, and further sterilizing the drinking water flowing in the water inlet pipe 10. Both ends of the housing 261 are provided with end caps 2612, and the quick connector 262 is installed through the end cap 2612. The end cap 2612 is used to stably install the quick connector 262 on the housing 261, thereby stably connecting to the end of the transparent quartz tube 264, improving the convenience of connection between the water inlet pipe 10 and the transparent quartz tube 264, and enabling quick disassembly and assembly between the two. An electromagnetic flowmeter 263 is installed on the quick connector 262 at one end of the transparent quartz tube 264 for counting the flow rate of the drinking water in the transparent quartz tube 264; A cleaning ring 268 is also arranged inside the transparent quartz tube 264. The cleaning ring 268 is used to clean the deposited debris accumulated on the inner wall of the transparent quartz tube 264, thereby ensuring that the inside of the pipeline is clean and tidy, and ensuring long-term stable use. A first magnetic ring 2681 is arranged inside the cleaning ring 268. The cleaning ring 268 slides against the inner wall of the transparent quartz tube 264, and cleaning scrapers are integrally arranged on both sides, so that the cleaning ring 268 slides on the inner wall of the transparent quartz tube 264 to remove the deposited debris accumulated on the inner wall of the pipeline, thereby smoothly achieving the purpose of cleaning the transparent quartz tube 264, ensuring that the water delivery pipeline is clean and tidy, and improving the quality of drinking water. The transparent quartz tube 264 is also arranged outside. A driving ring 269 cooperates with the cleaning ring 268, a second magnetic ring 2691 is arranged inside the driving ring 269, a threaded sleeve 2693 is arranged on a driving block 2692 integrally arranged at the lower part of the driving ring 269, and the threaded sleeve 2693 is threadedly connected with the screw rod 266, one end of the screw rod 266 is fixedly connected to the output shaft of the servo motor 267, the screw rod 266 is fixedly connected to the inner wall of the housing 261 through a bracket, and is rotatably connected to the bracket through a bearing, so that the screw rod 266 can be stably installed inside the housing 261, and it can be ensured that it can rotate smoothly on the bracket under the drive of the servo motor 267, and the servo motor 267 is fixedly installed on the bracket at the corresponding position, thereby ensuring stable output power during operation; When the transparent quartz tube 264 needs to be cleaned, the servo motor 267 is turned on to drive the screw rod 266 to rotate, and the driving ring 269 is driven to slide on the outer wall of the transparent quartz tube 264 through the cooperation of the threaded sleeve 2693 and the driving block 2692. During the sliding process, the cleaning ring 268 is driven to slide on the inner wall of the transparent quartz tube 264 by the magnetic attraction between the second magnetic ring 2691 and the first magnetic ring 2681, and the inner wall of the transparent quartz tube 264 is cleaned during the sliding process to clean up the impurities, thereby ensuring that the inside of the transparent quartz tube 264 is clean and tidy. The frequency of cleaning the inside of the transparent quartz tube 264 can be set according to actual usage requirements, and a specific duration can be set to clean the inner wall of the transparent quartz tube 264. When in use, you only need to enter the corresponding instructions on the controller on the purifier. When the cleaning time is reached, the controller controls the servo motor 267 to run. At the same time, the inner wall of the transparent quartz tube 264 can be cleaned according to the actual flow rate. The electromagnetic flowmeter 263 measures the drinking water flowing through the transparent quartz tube 264. When the value required for cleaning is reached, the controller controls the servo motor 267 to run according to the pre-set instructions. The controller is the controller used by common water purifiers on the existing market, so no further elaboration is made.

[0016] like Figure 2 and Figure 3As shown, in some embodiments, a key unit cooperating with the switch unit is provided on the outer shell 1. The key unit and the switch unit are connected through a switching valve. The switch unit includes a first switch 6 for discharging direct drinking water, and also includes a second switch 7 for replenishing water to the water tank 2 and discharging cold water. The key unit includes a first key 8 and a second key 9 respectively cooperating with and connected to the first switch 6 and the second switch 7. The switching valve adopts a ballpoint pen switching valve. Utilizing the elasticity of the key unit itself, different from the traditional mechanism of pressing to open and releasing to close, it realizes cyclic pressing of the switch. After the user presses to open, they can release their hand, and then press the key unit again until they have filled the required amount of water and then close it.

[0017] As Figure 2 shown, in some embodiments, the refrigeration unit includes a compressor 3 and a refrigeration pipe 4 connected to the compressor 3. The other end of the refrigeration pipe 4 is wound around the outer wall of the water tank 2 near the bottom.

[0018] As Figure 2 、 Figure 3 、 Figure 7 and Figure 8 shown, in some embodiments, the pipeline unit includes a water inlet pipe 10 connected to the filter element 5 and a filter element outlet pipe 11. The filter element outlet pipe 11 is communicated with a water inlet three-way valve 12. The water inlet three-way valve 12 is communicated with the first switch 6 through a direct drinking water branch pipe 13. The water inlet three-way valve 12 is also communicated with the second switch 7 through a water tank branch pipe 14; A direct drinking water outlet pipe 15 is connected to the outlet end of the first switch 6. The end of the direct drinking water outlet pipe 15 is connected to a water outlet three-way valve 16. The water outlet three-way valve 16 is communicated with the water tank 2 through a water tank outlet pipe 17. The outlet end of the water outlet three-way valve 16 is also connected to a water outlet faucet 18. The outlet end of the second switch 7 is connected to the water tank 2 through a water tank inlet pipe 19; The water tank 2 is provided with a water tank water inlet 20 and a water tank water outlet 21. The water tank water inlet 20 is communicated with the water tank inlet pipe 19. The water tank water outlet 21 is communicated with the water tank outlet pipe 17. An exhaust valve 22 for exhausting air is provided at the top of the water tank 2. A water distribution plate 23 is provided near the top inside the water tank 2. A cold water outlet conduit 24 extending downward is provided on the water distribution plate 23; One end of the cold water outlet conduit 24 is communicated with the water tank water outlet 21. The other end of the cold water outlet conduit 24 extends to near the bottom of the water tank 2. The water tank water inlet 20 is arranged near the water distribution plate 23; A sewage discharge pipe 25 for discharging waste water is communicated with the bottom of the water tank 2. The other end of the sewage discharge pipe 25 is communicated with the outside. The water tank 2 is a fully enclosed structure, and the water outlet can be controlled by the internal pressure, eliminating the need for the user to constantly judge the water level. It has a simple structure, is easy to install, has a low cost, and a good use effect.

[0019] When the water purifier is in use, external water enters the filter element 5 inside the housing 1 through the water inlet pipe 10. After being filtered by the filter element 5, the filtered direct drinking water is discharged through the filter element outlet pipe 11. The direct drinking water is branched in the water inlet three-way valve 12. A part of the direct drinking water enters the second switch 7 through the water tank branch pipe 14, and after passing through the second switch 7, it enters the water tank 2 through the water tank inlet pipe 19 to replenish water to the water tank 2. The water replenishment enters from the water tank inlet 20. Since the water tank inlet 20 is close to the water distribution plate 23, and the water distribution plate 23 is close to the top of the water tank 2, the water replenishment mainly enters the upper layer of the water tank 2; Another part of the direct drinking water branched in the water inlet three-way valve 12 enters the first switch 6 through the direct drinking branch pipe 13. After passing through the first switch 6, it enters the water outlet three-way valve 16 through the direct drinking outlet pipe 15. The water outlet three-way valve 16 is connected to a water outlet faucet 18, and the direct drinking water flows out through the water outlet faucet 18. Therefore, during the use process, when the user presses the first button 8 corresponding to and cooperating with the first switch 6, direct drinking normal temperature water can be discharged; The water outlet three-way valve 16 is also connected to a water tank outlet pipe 17 communicating with the water tank outlet 21. Inside the water tank 2, the water tank outlet 21 is communicated with the cold water outlet conduit 24. The other end of the cold water outlet conduit 24 extends downward to the cold water area at the bottom of the water tank 2. During the use process, when the user presses the second button 9 corresponding to and cooperating with the second switch 7, the water tank inlet pipe 19 replenishes water to the upper layer of the water tank 2. Since the water tank 2 is a fully enclosed structure, under the action of the internal pressure of the water tank 2, the cold water cooled by the refrigeration pipe 4 at the bottom of the water tank 2 is sent out through the cold water outlet conduit 24 to the water tank outlet 21, and then is transported to the water outlet three-way valve 16 through the water tank outlet pipe 17, and finally the refrigerated water flows out through the water outlet faucet 18. Therefore, when the user presses the second button 9, refrigerated cold water can be discharged; The excess waste water in the water tank 2 can be discharged to the outside through the sewage pipe 25 connected to the bottom of the water tank 2 to keep the inside of the water tank 2 dry and clean; When using for the first time, it is necessary to open the exhaust valve 22 on the water tank 2 to connect the inside of the water tank 2 with the outside air. By pressing the second button 9, the water tank 2 is filled with water. At this time, the air in the water tank 2 is discharged by the filled water, and then the exhaust valve 22 is sealed well to keep the inside of the water tank 2 in a closed and sealed state. The water tank 2 and the exhaust valve 22 are both provided with sealing mechanisms, and then the water purifier can be used normally.

[0020] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A water purifier, comprising a housing (1) of the water purifier, a water tank (2) is arranged inside the housing (1), a filter element (5) and a refrigeration unit are further arranged inside the housing (1), the filter element (5) and the water tank (2) are connected through a pipeline unit, and a switch unit for controlling the water flow of the pipeline unit and controlling the water outlet is arranged on the pipeline unit, and is characterized in that: A sterilizer (26) is installed on the water inlet pipe (10) of the pipeline unit. The sterilizer (26) includes a transparent quartz tube (264) placed in the inner cavity of the housing (261). Both ends of the transparent quartz tube (264) are connected to the water inlet pipe (10) through quick connectors (262), and an ultraviolet lamp tube (265) is also installed on the inner wall of the housing (261).

2. The water purifier according to claim 1, wherein: The ultraviolet lamp tube (265) is fixedly connected to the inner wall of the housing (261) through a support frame and is distributed in an annular array outside the periphery of the transparent quartz tube (264). The support feet (2611) integrally provided at the bottom of the housing (261) are fixedly connected to the inner wall of the corresponding part of the outer shell (1) through screws. End caps (2612) are installed at both ends of the housing (261). The quick connectors (262) are installed through the end caps (2612). An electromagnetic flowmeter (263) is installed on the quick connector (262) at one end of the transparent quartz tube (264).

3. A water purifier according to claim 2, characterized in that: A cleaning ring (268) is also installed inside the transparent quartz tube (264). A first magnetic ring (2681) is installed inside the cleaning ring (268). The cleaning ring (268) slides against the inner wall of the transparent quartz tube (264), and cleaning scrapers are integrally provided on both sides. A driving ring (269) that cooperates with the cleaning ring (268) is installed outside the transparent quartz tube (264). A second magnetic ring (2691) is installed inside the driving ring (269). A threaded sleeve (2693) is installed on the driving block (2692) integrally provided at the lower part of the driving ring (269). The threaded sleeve (2693) is in threaded transmission connection with a lead screw (266). One end of the lead screw (266) is fixedly connected to the output shaft of a servo motor (267). The lead screw (266) is fixedly connected to the inner wall of the housing (261) through a bracket and is rotationally connected to the bracket through a bearing.

4. The water purifier according to claim 1, wherein: The outer shell (1) is provided with a key unit that cooperates with the switch unit. The key unit and the switch unit are connected through a switch valve. The switch unit includes a first switch (6) for discharging direct drinking water and a second switch (7) for replenishing water to the water tank (2) and discharging cold water. The key unit includes a first key (8) and a second key (9) respectively connected in cooperation with the first switch (6) and the second switch (7). The switch valve adopts a ballpoint pen switching valve.

5. The water purifier according to claim 1, wherein: The refrigeration unit includes a compressor (3) and a refrigeration pipe (4) connected to the compressor (3). The other end of the refrigeration pipe (4) is wound around the outer wall of the water tank (2) near the bottom.

6. The water purifier according to claim 4, characterized in that: The pipeline unit includes a water inlet pipe (10) connected to a filter element (5) and a filter element water outlet pipe (11). The filter element water outlet pipe (11) is communicated with a water inlet three-way valve (12). The water inlet three-way valve (12) is communicated with the first switch (6) through a direct drinking water branch pipe (13). The water inlet three-way valve (12) is also communicated with the second switch (7) through a water tank branch pipe (14).

7. The water purifier according to claim 6, characterized in that: The water outlet end of the first switch (6) is connected to a direct drinking water outlet pipe (15), the end of the direct drinking water outlet pipe (15) is connected to a water outlet three-way valve (16), the water outlet three-way valve (16) is communicated with the water tank (2) through a water tank outlet pipe (17), the water outlet end of the water outlet three-way valve (16) is also connected to a water outlet faucet (18), and the water outlet end of the second switch (7) is communicated with the water tank (2) through a water tank inlet pipe (19).

8. A water purifier according to claim 7, characterized in that: The water tank (2) is provided with a water tank inlet (20) and a water tank outlet (21), the water tank inlet (20) is communicated with the water tank inlet pipe (19), the water tank outlet (21) is communicated with the water tank outlet pipe (17), the top of the water tank (2) is provided with an exhaust valve (22) for exhausting air, a water distribution plate (23) is arranged near the top inside the water tank (2), and a cold water outlet conduit (24) extending downward is arranged on the water distribution plate (23).

9. The water purifier according to claim 8, wherein: One end of the cold water outlet conduit (24) is communicated with the water tank outlet (21), the other end of the cold water outlet conduit (24) extends to a position near the bottom of the water tank (2), and the water tank inlet (20) is arranged near the water distribution plate (23).

10. A water purifier according to claim 1, characterized in that: A sewage pipe (25) for discharging waste water is communicated with the bottom of the water tank (2), and the other end of the sewage pipe (25) is communicated with the outside.

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