Cleaning structure, water purification system and water purifier

Abstract

The utility model provides a cleaning structure, water purification system and water purifier, the cleaning structure is used for cleaning the preposed charcoal in the preposed charcoal accommodation chamber of water purification system, the cleaning structure comprises a water inlet, a heating module and a first water outlet, the cleaning structure introduces water through the water inlet, and the heating module is used for heating the preposed charcoal in the preposed charcoal accommodation chamber. The heating module is used for heating water at the water inlet, and the first water outlet is used for being communicated with the front charcoal accommodating cavity so as to introduce the water heated by the heating module into the front charcoal accommodating cavity; the cleaning structure further comprises a water outlet communicated with the front charcoal containing cavity, and the water outlet can be opened or closed. According to the technical scheme provided by the utility model, organic matters in saturated preposed carbon can be volatilized or decomposed through hot water, so that the adsorption capacity of the preposed carbon is recovered; the RO filter element in the low-temperature environment is heated through warm water, frost crack damage to the RO filter element is prevented, safe and normal use of the water purifier is ensured, and the water use experience of customers is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water purification technical field, concretely relates to a cleaning structure, water purification system and water purifier. BACKGROUND

[0002] The front carbon adsorption saturation of water purifier will lose activity, has no adsorption capacity, can not adsorb the organic matter pollution source in water, leads to the failure of filtration system, the water quality of outlet is unsafe, and the service life is short, and how make the front carbon adsorption saturation restore activity becomes the technical problem that the technical personnel in the field urgently need to solve. SUMMARY

[0003] Therefore, the utility model provides a kind of cleaning structure, water purification system and water purifier, and the main technical problems to be solved are: how make the front carbon adsorption saturation restore activity.

[0004] In order to solve the above problems, the utility model provides a kind of cleaning structure, for cleaning the front carbon in the front carbon containing cavity of water purification system, the cleaning structure includes water inlet, heating module and first water outlet, the cleaning structure introduces water by the water inlet, the heating module is used to heat the water of the water inlet, the first water outlet is used to communicate with the front carbon containing cavity, to introduce the water after heating of the heating module into the front carbon containing cavity;

[0005] The cleaning structure further includes a drain port in communication with the front carbon containing cavity, wherein the drain port is openable or closable.

[0006] In some embodiments, the cleaning structure further includes a water softening module, which is used to soften the water of the water inlet before introducing it to the heating module for heating.

[0007] In some embodiments, the cleaning structure further includes a pump body, which forms a circulation flow path with the front carbon containing cavity.

[0008] The hot water outlet of the heating module is in communication with the circulation flow path to discharge the heated water onto the circulation flow path, and the first water outlet is arranged on the circulation flow path to communicate with the front carbon containing cavity through the circulation flow path.

[0009] In some embodiments, the water inlet of the pump body is in communication with the water outlet of the front carbon containing cavity, and the drain port of the pump body is in communication with the water inlet of the front carbon containing cavity to form the circulation flow path with the front carbon containing cavity, and the drain port of the pump body serves as the first water outlet.

[0010] In some embodiments, the circulation flow path is in communication with the hot water outlet of the heating module through the water inlet of the pump body.

[0011] In some embodiments, the cleaning structure further comprises a pressure sensor for detecting the water flow pressure on the circulation flow path.

[0012] In some embodiments, the cleaning structure further comprises a first temperature sensor for detecting the water temperature in the circulation flow path; and a flow regulating valve is further arranged on the circulation flow path.

[0013] The utility model further provides a kind of water purification system, it includes the cleaning structure described in any one of the above.

[0014] In some embodiments, the water purification system has a raw water inlet, and the water inlet of the pre-carbon accommodating cavity has a water inlet flow path in communication with the raw water inlet, and the water inlet is in communication with the raw water inlet to introduce water from the raw water inlet.

[0015] The water purification system comprises a first valve structure and a second valve structure, the first valve structure is used to control the opening and closing of the flow path of the cleaning structure, and the second valve structure is used to control the opening and closing of the water inlet flow path.

[0016] In some embodiments, when the water inlet of the pump body is in communication with the water outlet of the pre-carbon accommodating cavity, and the drain outlet of the pump body is in communication with the water inlet of the pre-carbon accommodating cavity, so that the pump body and the pre-carbon accommodating cavity form the circulation flow path, the first valve structure comprises a first on-off valve and a second on-off valve, the first on-off valve is arranged on the pipeline of the water inlet, and the second on-off valve is arranged on the pipeline between the water inlet of the pump body and the water outlet of the pre-carbon accommodating cavity.

[0017] The first valve structure controls the opening and closing of the flow path of the cleaning structure by cooperation of the first on-off valve and the second on-off valve.

[0018] In some embodiments, the water purification system further comprises an RO membrane filter and a third on-off valve, and the water outlet of the pre-carbon accommodating cavity is further in communication with the water inlet of the RO membrane filter through a first pipeline; the third on-off valve is arranged on the first pipeline.

[0019] In some embodiments, the water purification system has a first working mode, in the first working mode, the first on-off valve and the second on-off valve are both opened, the third on-off valve is closed, and the second valve structure controls the water inlet flow path to be closed.

[0020] And / or, the water purification system has a second working mode, in which the first switch valve and the third switch valve are both open, the second switch valve is closed, and the second valve structure controls the water inlet flow path to be closed.

[0021] And / or, the water purification system has a third working mode, in which the first switch valve and the second switch valve are both closed, the third switch valve is open, and the second valve structure controls the water inlet flow path to be open.

[0022] In some embodiments, when the water purification system has the second working mode, the RO membrane filter further has a waste water outlet that can be opened or closed; the water purification system further comprises a second temperature sensor and a third temperature sensor, the second temperature sensor is used to detect the water temperature of the water inlet flow path; and the third temperature sensor is used to detect the water temperature of the waste water outlet.

[0023] In some embodiments, a first check valve is arranged on the pipeline of the water outlet of the pump body, and the first check valve is used to prevent water from flowing back to the water outlet of the pump body.

[0024] In some embodiments, when the circulation flow path communicates with the hot water outlet of the heating module through the water inlet of the pump body, a second check valve is arranged on the flow path between the water inlet of the pump body and the second switch valve, and the hot water outlet of the heating module is connected to the first flow path between the water inlet of the pump body and the second check valve to communicate with the water inlet of the pump body through the first flow path; wherein the second check valve is used to prevent water in the first flow path from flowing back to the second switch valve.

[0025] In some embodiments, the flow path between the second check valve and the second switch valve is a second flow path, the flow path between the water outlet of the pre-carbon accommodating cavity and the second switch valve is a third flow path, and the water outlet is connected to the second flow path to communicate with the water outlet of the pre-carbon accommodating cavity through the second switch valve and the third flow path.

[0026] In some embodiments, the second valve structure comprises a fourth switch valve arranged on the water inlet flow path, and the second valve structure controls the opening and closing of the water inlet flow path through the fourth switch valve.

[0027] The utility model further provides a kind of water purifier, it includes the cleaning structure of any one in the above, or it includes the water purification system of any one in the above.

[0028] The cleaning structure, water purification system and water purifier provided by the utility model have the following beneficial effects:

[0029] 1. The heating module heats the inlet water to a preset temperature, such as 60-70℃, and then introduces the hot water into the pre-filter chamber to clean the pre-filter, causing the organic matter in the pre-filter to volatilize or decompose, thereby restoring the activity of the pre-filter. After cleaning the pre-filter, the drain can be opened to discharge the wastewater from the pre-filter chamber.

[0030] 2. The water purification system of this utility model has a second working mode, which is the RO membrane filter element anti-freezing and cracking mode. In this mode, hot water heated by the heating module can flow into the RO membrane filter. The warm water prevents the RO membrane filter element from freezing and cracking in the low-temperature environment, ensuring the safe and normal use of the machine and meeting the customer's water experience. Attached Figure Description

[0031] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0032] Figure 1 This is a structural diagram of a water purification system provided in one embodiment of the present invention.

[0033] The attached figures are labeled as follows:

[0034] 1. Third switch valve; 2. First switch valve; 3. Second switch valve; 4. Soft water module; 5. Heating module; 6. Temperature sensor; 7. Second temperature sensor; 8. Fourth switch valve; 9. Pressure stabilizing pump; 10. First temperature sensor; 11. Pre-filter carbon chamber; 12. Wastewater switch valve; 13. RO membrane filter; 14. Pump body; 15. Flow regulating valve; 16. Fifth switch valve; 17. First check valve; 18. Pressure sensor; 19. Third temperature sensor; 0. Drain outlet; 21. Second check valve; 22. Flow meter; 23. First pipeline; 24. First flow path; 25. Second flow path; 26. Inlet flow path; 27. Third flow path; 51. Hot water outlet; 100. Raw water inlet; 101. Inlet; 102. First outlet; 111. Inlet of pre-carbon filter chamber; 112. Outlet of pre-carbon filter chamber; 130. Inlet of RO membrane filter; 131. Wastewater outlet; 141. Drain outlet of pump body. Detailed Implementation

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative in nature and in no way should be taken as any limitation on the present application and its application or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0036] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0037] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0038] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0039] For reference Figure 1As shown, according to the embodiment of the utility model, provide a kind of cleaning structure, for the front carbon in the front carbon containing cavity 11 of water purification system is cleaned.The cleaning structure includes water inlet 101, heating module 5 and first water outlet 102.Cleaning structure is introduced water by water inlet 101.Heating module 5 is used to heat the water of water inlet 101.First water outlet 102 is used to communicate with front carbon containing cavity 11, to introduce the water after heating of heating module 5 into front carbon containing cavity 11.Cleaning structure further includes drain 20 that communicates with front carbon containing cavity 11.Wherein, drain 20 can be opened or closed.

[0040] In the above example, heating module 5 can heat the water of water inlet 101 into hot water of preset temperature such as 60-70 DEG C, then introduce hot water into front carbon containing cavity 11 to clean front carbon, make organic matter in front carbon volatilize or decompose, so that front carbon restores activity.After cleaning front carbon, drain 20 can be opened, and sewage in front carbon containing cavity 11 is discharged.

[0041] In some embodiments, as shown in Figure 1 As shown, the aforementioned cleaning structure further includes soft water module 4, which is used to soften the water of water inlet 101 before heating by heating module 5.

[0042] In the above example, the water of water inlet 101 is softened by soft water module 4, and then the softened water is used to clean front carbon, which has better cleaning effect.

[0043] It should be noted that: the aforementioned heating module 5 can be instant heating module, and the specific structure of heating module 5 and soft water module 4 is prior art, which will not be described here again.Heat water outlet 51 of the aforementioned heating module can be provided with temperature sensing bag 6, which is used to detect the temperature of heat water outlet 51.

[0044] In some embodiments, as shown in Figure 1 As shown, the aforementioned cleaning structure further includes pump body 14, which can be circulating pump or the like.Pump body 14 forms a circulating flow path with front carbon containing cavity 11.Heat water outlet 51 of heating module communicates with the circulating flow path to discharge heated water onto the circulating flow path.The aforementioned first water outlet 102 is arranged on the circulating flow path to communicate with front carbon containing cavity 11 through the circulating flow path.

[0045] In the above example, heat water outlet 51 of heating module can supply hot water to the circulating flow path, and the hot water circulates in the circulating flow path to circularly clean front carbon in front carbon containing cavity 11, which can improve the cleaning effect of front carbon.Pump body 14 can increase the pressure into front carbon containing cavity 11, so that organic matter in front carbon volatilizes or decomposes, thereby restoring its adsorption capacity.

[0046] In some implementations, such as Figure 1 As shown, the aforementioned cleaning structure also includes a pressure sensor 18, which is used to detect the water flow pressure in the circulation path. When the water flow pressure in the circulation path is higher than a preset pressure value, the drain outlet 20 can be opened to drain water, reducing the water flow pressure in the circulation path to below the preset pressure value. The preset pressure value can be 3.5 kg.

[0047] In order to form the aforementioned circulating flow path, in some embodiments, such as Figure 1 As shown, the inlet 142 of the pump body is connected to the outlet 112 of the pre-char chamber, and the outlet 141 of the pump body is connected to the inlet 111 of the pre-char chamber, so that the pump body 14 and the pre-char chamber 11 form the aforementioned circulation path. The outlet 141 of the pump body serves as the aforementioned first outlet 102, introducing heated water into the pre-char chamber 11.

[0048] In some implementations, such as Figure 1 As shown, the aforementioned circulation path is connected to the hot water outlet 51 of the heating module through the water inlet 142 of the pump body, so that the hot water outlet 51 of the heating module is connected to the circulation path.

[0049] In some implementations, such as Figure 1 As shown, the cleaning structure also includes a first temperature sensor 10, which is used to detect the water temperature in the circulation path. A flow regulating valve 15 is also provided in the aforementioned circulation path, which is used to regulate the water flow rate in the circulation path.

[0050] In the example above, when the water temperature in the circulation path is not within the preset range, the flow rate can be adjusted by regulating the flow regulating valve 15, thereby achieving the purpose of adjusting the outlet water temperature of the hot water outlet 51. The preset range can be 60-70℃.

[0051] This utility model also provides a water purification system, which may include the cleaning structure described above. Because the water purification system employs the aforementioned cleaning structure, the heating module 5 can heat the water at the inlet 101 to a preset temperature, such as 60-70°C, and then introduce the hot water into the pre-carbon filter housing 11 to clean the pre-carbon filter, causing the organic matter in the pre-carbon filter to volatilize or decompose, thereby restoring the activity of the pre-carbon filter. After cleaning the pre-carbon filter, the drain outlet 20 can be opened to discharge the wastewater from the pre-carbon filter housing 11.

[0052] In some implementations, such as Figure 1As shown, the aforementioned water purification system has a raw water inlet 100, and the water inlet 111 of the pre-carbon accommodating cavity has a water inlet flow path 26 in communication with the raw water inlet 100. The aforementioned water inlet 101 is in communication with the raw water inlet 100 to introduce water from the raw water inlet 100. The water purification system includes a first valve structure and a second valve structure, the first valve structure is used to control the opening and closing of the flow path of the cleaning structure, and the second valve structure is used to control the opening and closing of the water inlet flow path 26.

[0053] In the above example, when the water purification system does not need to use the cleaning structure for normal operation, the flow path of the cleaning structure can be closed by the first valve structure, and the water inlet flow path 26 is opened by the second valve structure. When the water purification system needs to use the cleaning structure to clean the pre-carbon, the flow path of the cleaning structure can be opened by the first valve structure, and the water inlet flow path 26 is closed by the second valve structure.

[0054] In order to achieve the function of the aforementioned first valve structure, in some embodiments, as shown in Figure 1 As shown, when the water inlet 142 of the pump body is in communication with the water outlet 112 of the pre-carbon accommodating cavity, and the drain outlet 141 of the pump body is in communication with the water inlet 111 of the pre-carbon accommodating cavity, the first valve structure can include a first on-off valve 2 and a second on-off valve 3, and the first on-off valve 2 is arranged on the pipeline between the water inlet 101 and the heating module 5. Preferably, the first on-off valve 2 is arranged on the pipeline between the water inlet 101 and the soft water module 4. The second on-off valve 3 is arranged on the pipeline between the water inlet 142 of the pump body and the water outlet 112 of the pre-carbon accommodating cavity.

[0055] The first valve structure controls the opening and closing of the flow path of the cleaning structure through the cooperation of the first on-off valve 2 and the second on-off valve 3. Specifically, when the first on-off valve 2 and the second on-off valve 3 are both opened, the flow path of the cleaning structure can be opened. When the first on-off valve 2 and the second on-off valve 3 are both closed, the flow path of the cleaning structure can be closed.

[0056] In some embodiments, as shown in Figure 1 As shown, the aforementioned water purification system further includes an RO membrane filter 13 and a third on-off valve 1. The water outlet 112 of the pre-carbon accommodating cavity is also in communication with the water inlet 101 of the RO membrane filter through a first pipeline 23. The aforementioned third on-off valve 1 is arranged on the first pipeline 23.

[0057] In the above example, when the flow path of the cleaning structure is opened to clean the pre-carbon, the third on-off valve 1 is closed to prevent the cleaning water from flowing into the RO membrane filter 13 through the first pipeline 23.

[0058] In some embodiments, the aforementioned water purification system has a first working mode. In the first working mode, the first switch valve 2 and the second switch valve 3 are both open, the third switch valve 1 is closed, and the second valve structure controls the water inlet flow path 26 to be closed. In the first working mode, the first switch valve 2 and the second switch valve 3 are open, and the flow path of the cleaning structure can be opened; the third switch valve 1 is closed, and the cleaning water can be prevented from flowing into the RO membrane filter 13 through the first pipeline 23.

[0059] In some embodiments, the aforementioned water purification system also has a second working mode. In the second working mode, the first switch valve 2 and the third switch valve 1 are both open, the second switch valve 3 is closed, and the second valve structure controls the water inlet flow path 26 to be closed.

[0060] In the above example, the second working mode is an RO membrane cartridge anti-freezing mode. In this mode, the hot water heated by the heating module 5 can flow into the first pipeline 23, and then flow into the RO membrane filter 13 through the first pipeline 23. The warm water can prevent the cartridge from freezing and being damaged in a low-temperature environment, ensuring the safe and normal use of the machine and meeting the customer's water experience.

[0061] In some embodiments, the aforementioned water purification system also has a third working mode. In the third working mode, the first switch valve 2 and the second switch valve 3 are both closed, the third switch valve 1 is open, and the second valve structure controls the water inlet flow path 26 to be open.

[0062] In the above example, the third working mode is the normal water purification mode of the water purification system. In this third working mode, the flow path of the cleaning structure is closed. The water of the raw water inlet 100 enters the pre-carbon accommodating cavity 11 from the water inlet flow path 26, and then enters the RO membrane filter 13 from the first pipeline 23, and then flows into the subsequent water purification branch.

[0063] In some embodiments, as shown in Figure 1 When the water purification system has the second working mode, the aforementioned RO membrane filter 13 also has a waste water outlet 131, which can be opened or closed. Preferably, the water purification system can also include a waste water switch valve 12 for opening or closing the waste water outlet 131. The waste water switch valve 12 can be an electromagnetic valve or the like.

[0064] As shown in Figure 1 The aforementioned water purification system also includes a second temperature sensor 7 and a third temperature sensor 19. The second temperature sensor 7 is used to detect the water temperature of the water inlet flow path 26. The third temperature sensor 19 is used to detect the water temperature of the waste water outlet 131.

[0065] In the above example, if the second temperature sensor 7 detects that the water temperature of the water inlet flow path 26 is lower than a first preset value, such as 1℃, the water purification system can switch to a second working mode, in which the hot water flushes the RO membrane filter element in the RO membrane filter 13 to prevent the RO membrane filter element from being damaged by freezing, at which time the waste water outlet 131 can be opened, and the hot water in the RO membrane filter 13 after flushing the RO membrane filter element is discharged from the waste water outlet 131. When the third temperature sensor 19 detects that the water temperature of the waste water outlet 131 is higher than a second preset value, such as 10℃, the water purification system exits the second working mode and enters a normal standby state.

[0066] In some embodiments, as shown in Figure 1 A first check valve 17 can be provided on the pipeline of the drain port 141 of the pump body to prevent water from flowing backward to the drain port 141 of the pump body, thereby ensuring the normal operation of the water purification system.

[0067] In some embodiments, as shown in Figure 1 When the circulation flow path is in communication with the hot water outlet 51 of the heating module through the water inlet port 142 of the pump body, a second check valve 21 is provided on the pipeline between the water inlet port 142 of the pump body and the second switch valve 3, and the hot water outlet 51 of the heating module is connected to the first flow path 24 between the water inlet port 142 of the pump body and the second check valve 21 to communicate with the water inlet port 142 of the pump body through the first flow path 24. The second check valve 21 is used to prevent water in the first flow path 24 from flowing backward to the second switch valve 3, thereby ensuring the normal operation of the water purification system.

[0068] To achieve the function of the drain port 20 being in communication with the pre-carbon accommodating cavity 11, in some embodiments, as shown in Figure 1 The pipeline between the second check valve 21 and the second switch valve 3 is a second flow path 25, and the pipeline between the water outlet 112 of the pre-carbon accommodating cavity and the second switch valve 3 is a third flow path 27. The drain port 20 is connected to the second flow path 25 to communicate with the water outlet 112 of the pre-carbon accommodating cavity through the second switch valve 3 and the third flow path 27.

[0069] To achieve the function of the second valve structure controlling the opening and closing of the water inlet flow path 26, in some embodiments, the second valve structure can include a fourth switch valve 8 provided on the water inlet flow path 26, and the second valve structure controls the opening and closing of the water inlet flow path 26 through the fourth switch valve 8.

[0070] In some embodiments, as shown in Figure 1As shown, the aforementioned drain port 20 can be opened or closed by the fifth switch valve 16. The aforementioned first switch valve 2, second switch valve 3, third switch valve 1, fourth switch valve 8 and fifth switch valve 16 can all be solenoid valves or the like. The aforementioned first pipeline 23 can also be provided with a flow meter 22 and a pressure stabilizing pump 9. The water purification system comprises a PCC composite filter having the aforementioned pre-carbon accommodating cavity 11.

[0071] The utility model also provides a kind of water purifier, it includes the cleaning structure of any one in the above, or it includes the water purification system of any one in the above. Among them, since water purifier uses the cleaning structure or water purification system described above, heating module 5 can heat the water of water inlet 101 into hot water of preset temperature such as 60-70 ℃, then hot water is introduced into pre-carbon accommodating cavity 11 to clean pre-carbon, so that organic matter in pre-carbon is volatilized or decomposed, so that pre-carbon restores activity. After cleaning pre-carbon, drain port 20 can be opened, and sewage in pre-carbon accommodating cavity 11 is discharged.

[0072] For the convenience of understanding, the overall structure of the utility model is described below, and its working principle is described.

[0073] The water purification system of the utility model has pre-carbon regeneration function and RO membrane filter core anti-freezing function. The two functions are introduced respectively as follows.

[0074] 1, pre-carbon regeneration function. The pressure stabilizing pump 9 accumulates preset time such as 1 hour, in the state that water purifier stops running, soft water module 4, heating module 5 and pump body 14 start running, flow regulating valve 15, first switch valve 2 and second switch valve 3 are all opened, third switch valve 1 and fourth switch valve 8 are all closed, pressure sensor 18 and each temperature sensor run, and pre-carbon is regenerated. The temperature of hot water outlet 51 of heating module is controlled at 60-70 ℃, and the flow in the flow path of cleaning structure is controlled at 1.5-2.0 L / min. Hot water enters pre-carbon accommodating cavity 11 and circulates in the circulating flow path. After preset time such as 30 minutes, fifth switch valve 16 is opened to empty hot water, and at the same time, the dirt intercepted on the filter core is cleaned, and regeneration is completed. During the period, if pressure sensor 18 detects that the pressure is higher than the preset value such as 3.5 kg, fifth switch valve 16 is opened to release pressure, and when pressure sensor 18 detects that the pressure is lower than 3 kg, fifth switch valve 16 is closed.

[0075] Among them, when water purifier runs, pre-carbon continuously adsorbs pollutants in water, which will cause pre-carbon to be saturated and adsorption to be attenuated after a long time, and the adsorption effect is poor. By cleaning pre-carbon with hot water such as 60-70 ℃ water temperature, pre-carbon can release pollutants and clean dirt, so that the effect of regeneration and cleaning is achieved.

[0076] It should be noted that the temperature of the hot water outlet 51 can be detected by the temperature sensor 6.

[0077] 2. Anti-freezing function of the filter core. When the second temperature sensor 7 detects that the water inlet temperature is lower than the preset temperature, such as 1℃, the second switch valve 3, the fourth switch valve 8 and the fifth switch valve 16 are all closed, the first switch valve 2 and the third switch valve 1 are both opened, the temperature of the hot water outlet 51 of the heating module is controlled at 20-25℃, and the flow rate in the pipeline is controlled at 4.5-5.0L / min. The warm water enters the pre-carbon cavity 11 and the RO membrane filter 13 in turn, and then is discharged through the waste water outlet 131 of the RO membrane filter 13. When the third temperature sensor 19 detects that the water outlet temperature of the waste water outlet 131 is higher than the preset value, such as 10℃, the water purification system stops running and enters the normal standby state.

[0078] In the utility model, the water temperature is above zero, the RO membrane filter core is not frozen, and the water purifier can run normally.

[0079] It is easy for those skilled in the art to understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0080] The above description is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model. It should be pointed out that, for ordinary skilled in the art, on the premise of not departing from the technical principle of the utility model, a plurality of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the utility model.

Claims

1. A cleaning structure for cleaning a pre-carbon in a pre-carbon accommodating cavity (11) of a water purification system, characterized in that: The cleaning structure comprises a water inlet (101), a heating module (5), and a first water outlet (102). The cleaning structure introduces water through the water inlet (101). The heating module (5) is used for heating the water of the water inlet (101). The first water outlet (102) is used for communicating with the front carbon accommodating cavity (11) to introduce the water heated by the heating module (5) into the front carbon accommodating cavity (11). The cleaning structure further comprises a drain port (20) in communication with the front carbon accommodating cavity (11), wherein the drain port (20) is openable or closable.

2. The cleaning structure of claim 1, wherein: The cleaning structure further comprises a soft water module (4) for softening the water of the water inlet (101) before introducing the water into the heating module (5) for heating.

3. The cleaning structure of claim 1, wherein: The cleaning structure further comprises a pump body (14) forming a circulating flow path with the front carbon accommodating cavity (11). The hot water outlet (51) of the heating module is in communication with the circulating flow path to discharge the heated water onto the circulating flow path. The first water outlet (102) is arranged on the circulating flow path to communicate with the front carbon accommodating cavity (11) through the circulating flow path.

4. The cleaning structure according to claim 3, wherein: The water inlet (142) of the pump body is in communication with the water outlet (112) of the front carbon accommodating cavity. The drain port (141) of the pump body is in communication with the water inlet (111) of the front carbon accommodating cavity to form the circulating flow path with the pump body (14) and the front carbon accommodating cavity (11). The drain port (141) of the pump body serves as the first water outlet (102).

5. The cleaning structure according to claim 4, wherein: The circulating flow path is in communication with the hot water outlet (51) of the heating module through the water inlet (142) of the pump body.

6. The cleaning structure according to claim 4 or 5, wherein: The cleaning structure further comprises a pressure sensor (18) for detecting the water flow pressure on the circulating flow path. The cleaning structure further comprises a first temperature sensor (10) for detecting the water temperature in the circulating flow path. The circulating flow path is further provided with a flow regulating valve (15).

7. A water purification system characterized by: The cleaning structure according to any one of claims 1-6.

8. The water purification system of claim 7, wherein: The water purification system has a raw water inlet (100). The water inlet (111) of the front carbon accommodating cavity has a water inlet flow path (26) in communication with the raw water inlet (100). The water inlet (101) is in communication with the raw water inlet (100) to introduce water from the raw water inlet (100). The water purification system comprises a first valve structure and a second valve structure. The first valve structure is used for controlling the opening and closing of the flow path of the cleaning structure. The second valve structure is used for controlling the opening and closing of the water inlet flow path (26).

9. The water purification system of claim 8, wherein: When the water inlet (142) of the pump body communicates with the water outlet (112) of the pre-carbon accommodating cavity, and the water outlet (141) of the pump body communicates with the water inlet (111) of the pre-carbon accommodating cavity, so that the pump body (14) and the pre-carbon accommodating cavity (11) form the circulating flow path, the first valve structure includes a first on-off valve (2) and a second on-off valve (3), the first on-off valve (2) is arranged on the pipeline of the water inlet (101), and the second on-off valve (3) is arranged on the pipeline between the water inlet (142) of the pump body and the water outlet (112) of the pre-carbon accommodating cavity. The first valve structure controls the opening and closing of the flow path of the cleaning structure through cooperation of the first on-off valve (2) and the second on-off valve (3).

10. The water purification system according to claim 9, characterized in that: The water purification system further comprises an RO membrane filter (13) and a third on-off valve (1), the water outlet (112) of the pre-carbon accommodating cavity further communicates with the water inlet (101) of the RO membrane filter through a first pipeline (23), and the third on-off valve (1) is arranged on the first pipeline (23).

11. The water purification system according to claim 10, characterized in that: The water purification system has a first working mode, in which the first on-off valve (2) and the second on-off valve (3) are both opened, the third on-off valve (1) is closed, and the second valve structure controls the water inlet flow path (26) to be closed; and / or, the water purification system has a second working mode, in which the first on-off valve (2) and the third on-off valve (1) are both opened, the second on-off valve (3) is closed, and the second valve structure controls the water inlet flow path (26) to be closed; and / or, the water purification system has a third working mode, in which the first on-off valve (2) and the second on-off valve (3) are both closed, the third on-off valve (1) is opened, and the second valve structure controls the water inlet flow path (26) to be opened.

12. The water purification system of claim 11, wherein: When the water purification system has the second working mode, the RO membrane filter (13) further has a waste water outlet (131) which can be opened or closed; the water purification system further comprises a second temperature sensor (7) and a third temperature sensor (19), the second temperature sensor (7) is used for detecting the water temperature of the water inlet flow path (26), and the third temperature sensor (19) is used for detecting the water temperature of the waste water outlet (131).

13. The water purification system according to any one of claims 9-12, characterized in that: A first check valve (17) is arranged on the pipeline of the water outlet (141) of the pump body, and the first check valve (17) is used for preventing water from flowing reversely to the water outlet (141) of the pump body.

14. The water purification system according to any one of claims 9-12, characterized in that: When the circulation flow path communicates with the hot water outlet (51) of the heating module through the water inlet (142) of the pump body, a second check valve (21) is arranged on the flow path between the water inlet (142) of the pump body and the second switch valve (3), the hot water outlet (51) of the heating module is connected to the first flow path (24) between the water inlet (142) of the pump body and the second check valve (21), so as to communicate with the water inlet (142) of the pump body through the first flow path (24); wherein the second check valve (21) is used to prevent the water in the first flow path (24) from flowing backward to the second switch valve (3).

15. The water purification system according to claim 14, characterized in that: the flow path between the second check valve and the second switch valve (3) is a second flow path (25), the flow path between the water outlet (112) of the pre-carbon accommodating cavity and the second switch valve (3) is a third flow path (27), and the drain port (20) is connected to the second flow path (25) to communicate with the water outlet (112) of the pre-carbon accommodating cavity through the second switch valve (3) and the third flow path (27).

16. The water purification system according to any one of claims 8-12 and 15, characterized in that: the second valve structure includes a fourth switch valve (8) arranged on the water inlet flow path (26), and the second valve structure controls the opening and closing of the water inlet flow path (26) through the fourth switch valve (8).

17. A water purifier characterized by comprising: The cleaning structure according to any one of claims 1-6, or the water purification system according to any one of claims 7-16.

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