A cleaning structure, a water purification system, a control method, and a water purifier.

Abstract

This invention provides a cleaning structure, a water purification system, a control method, and a water purifier. The cleaning structure cleans the post-carbon filter in the post-carbon filter housing of the water purification system. The cleaning structure includes an inlet, a heating module, and a first outlet. Water is introduced into the cleaning structure through the inlet, and the heating module heats the water at the inlet. The first outlet communicates with the post-carbon filter housing to introduce the heated water into the housing. The cleaning structure also includes a drain outlet communicating with the post-carbon filter housing. The drain outlet can open and close at a set frequency to regulate the pressure within the post-carbon filter housing. According to the technical solution of this invention, the water purifier can still effectively remove chloroform through the post-carbon filter after a period of use, thereby meeting the safety and health requirements for direct drinking water, and the post-carbon filter has a long lifespan.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of water purification, and particularly relates to a cleaning structure, a water purification system, a control method and a water purifier. BACKGROUND

[0002] The technology of removing trichloromethane by a reverse osmosis water purifier is mainly realized through a high-efficiency filter system. The reverse osmosis water purifier has a PCC composite filter and an RO membrane filter. The PCC composite filter has a front carbon accommodating cavity and a rear carbon accommodating cavity. The front carbon accommodating cavity has front carbon therein, and the rear carbon accommodating cavity has rear carbon therein. The RO membrane filter has an RO membrane therein. The front carbon, the RO membrane and the rear carbon all have the effect of removing trichloromethane. Through technical research, the reverse osmosis water purifier can remove trichloromethane in the initial use period, but the removal effect is greatly attenuated and decreased after being used for a period of time, which cannot meet the water quality safety requirements. This technology is also a pain point of the entire reverse osmosis water purifier industry. SUMMARY

[0003] Therefore, the present application provides a cleaning structure, a water purification system, a control method and a water purifier, which can solve the technical problem of the great attenuation and decrease of the removal effect of trichloromethane by the water purifier in the prior art after being used for a period of time.

[0004] In order to solve the above problems, the present application provides a cleaning structure for cleaning the rear carbon in the rear carbon accommodating cavity of a 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. The heating module is used for heating the water of the water inlet. The first water outlet is used for communicating with the rear carbon accommodating cavity, so as to introduce the water heated by the heating module into the rear carbon accommodating cavity.

[0005] The cleaning structure further comprises a drain port communicating with the rear carbon accommodating cavity. The drain port can be opened and closed according to a set frequency, so as to adjust the pressure in the rear carbon accommodating cavity.

[0006] In some embodiments, the heating module has a heating cavity with an inlet and an outlet. The heating module introduces the water of the water inlet into the heating cavity for heating through the inlet. The outlet serves as the first water outlet.

[0007] In some embodiments, the cleaning structure further comprises a heat exchanger.

[0008] The heat exchanger has a first heat exchange channel and a second heat exchange channel which can exchange heat with each other; one end of the first heat exchange channel is communicated with the inflow port, and the other end can be communicated with the water inlet port, so that the water inlet port can be communicated with the inflow port through the first heat exchange channel; one end of the second heat exchange channel is used to communicate with the rear carbon accommodating cavity, and the other end can be communicated with the first water outlet port, so that the first water outlet port can be communicated with the rear carbon accommodating cavity through the second heat exchange channel.

[0009] In some embodiments, the cleaning structure further comprises a first pipeline and a second pipeline; one end of the first pipeline is communicated with the inflow port, and the other end can be communicated with the water inlet port, so that the water inlet port can be communicated with the inflow port through the first pipeline; one end of the second pipeline is used to communicate with the rear carbon accommodating cavity, and the other end can be communicated with the first water outlet port, so that the first water outlet port can be communicated with the rear carbon accommodating cavity through the second pipeline.

[0010] Wherein, the cleaning structure has at least two modes, in the first mode, the water inlet port is communicated with the inflow port through the first pipeline and the first heat exchange channel, and the first water outlet port is communicated with the rear carbon accommodating cavity through the second pipeline and the second heat exchange channel; in the second mode, the water inlet port is communicated with the inflow port through the first heat exchange channel and the first pipeline, and the first water outlet port is communicated with the rear carbon accommodating cavity through the second heat exchange channel and the second pipeline.

[0011] In some embodiments, the water inlet port is connected with the other end of the first heat exchange channel and the other end of the first pipeline through a first valve structure, the first valve structure is used to control the other end of the first heat exchange channel and the other end of the first pipeline to communicate with the water inlet port in the first mode, and control the other end of the first heat exchange channel to communicate with the water inlet port in the second mode;

[0012] And / or, the first water outlet port is connected with the other end of the second heat exchange channel and the other end of the second pipeline through a second valve structure, the second valve structure is used to control the other end of the second heat exchange channel and the other end of the second pipeline to communicate with the first water outlet port in the first mode, and control the other end of the second heat exchange channel to communicate with the first water outlet port in the second mode.

[0013] In some embodiments, the drain port is opened and closed by an electrically controlled valve; the cleaning structure further comprises a controller configured to control the electrically controlled valve to open and close at the set frequency, so that the drain port is opened and closed at the set frequency.

[0014] The present application also provides a water purification system comprising the cleaning structure of any one of the above.

[0015] In some embodiments, the water purification system has an RO membrane filter having a filtered water outlet, and the water inlet is in communication with the filtered water outlet.

[0016] In some embodiments, when the heating module has a heating cavity having an inlet and an outlet, and the heating module introduces water from the water inlet into the heating cavity for heating through the inlet, and the outlet serves as the first water outlet, the heating cavity can be turned on or turned off; the water purification system has a water purification mode and a post-carbon cleaning mode, wherein, in the water purification mode, the heating cavity is turned off; and in the post-carbon cleaning mode, the heating cavity is turned on.

[0017] In some embodiments, the water purification system further comprises a water purification branch;

[0018] The post-carbon accommodating cavity has a second water outlet, which is selectively in communication with one of the drain port and the water purification branch through a third valve structure.

[0019] The present application also provides a control method for the water purification system of the above, when the water purification system further comprises the water purification structure of the above, and the heating cavity can be turned on or turned off, the water purification system has a first post-carbon cleaning mode, in which the cleaning structure is in the second mode, the third valve structure controls the second water outlet to be in communication with the drain port, the heating cavity is turned on, and the drain port is opened and closed at a set frequency; wherein, when the content of chloroform in the second water outlet is greater than or equal to a first preset value, the water purification system is controlled to enter the first post-carbon cleaning mode, so that the water purification system is continuously operated in the first post-carbon cleaning mode until the content of chloroform in the second water outlet is reduced to below a second preset value, and then the water purification system is controlled to exit the first post-carbon cleaning mode.

[0020] In some embodiments, the water purification system has a second post-carbon cleaning mode, in which the cleaning structure is in the first mode, the third valve structure controls the second water outlet to communicate with the drain outlet, and the heating cavity is in the heating function; wherein, when the chloroform content of the second water outlet is still greater than or equal to the first preset value after the water purification system runs in the first post-carbon cleaning mode for a first preset time, the water purification system is controlled to enter the second post-carbon cleaning mode, and the drain outlet is controlled to remain closed for a second preset time and then opened.

[0021] In some embodiments, after the water purification system exits the first post-carbon cleaning mode, the drain outlet is opened for a third preset time and then closed.

[0022] The present application also provides a water purification machine comprising the cleaning structure of any one of the above or comprising the water purification system of any one of the above.

[0023] The cleaning structure, water purification system, control method and water purification machine provided by the present application have the following beneficial effects:

[0024] 1. The heating module can heat the water at the water inlet into warm water, and then discharge the warm water into the post-carbon containing cavity through the first water outlet, so as to clean the post-carbon by warm water, such as real-time flushing or soaking, stimulate the adsorption activity function of the post-carbon to remove chloroform, and improve the adsorption performance of the post-carbon. When the warm water continuously flows into the post-carbon containing cavity, the drain outlet can be frequently opened and closed according to the set frequency to adjust the pressure in the post-carbon containing cavity, so that the warm water entering the post-carbon containing cavity forms a pressure difference shock wave jet, bubbles are generated in the water, penetrate into the carbon, and burst under the action of the pressure difference, forming an impact force, thereby improving the cleaning effect of the post-carbon. Since the post-carbon is cleaned and its adsorption activity to remove chloroform is restored, the water purification machine can still effectively remove chloroform through the post-carbon after a period of use, thereby meeting the safety and health requirements of direct drinking water, and the service life of the post-carbon is also longer.

[0025] 2. When the chloroform content of the second water outlet is still greater than or equal to the first preset value after the water purification system runs in the first post-carbon cleaning mode for a first preset time, it indicates that the first post-carbon cleaning mode cannot clean the post-carbon completely. At this time, the water purification system is controlled to enter the second post-carbon cleaning mode, and the drain outlet is controlled to remain closed for a second preset time and then opened. The second post-carbon cleaning mode of the water purification system is a soaking cleaning mode, in which the post-carbon is soaked in the warm water during the time when the drain outlet remains closed, which is beneficial to improve the ability of the post-carbon to effectively remove chloroform. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. The drawings in the following description are merely exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0027] Figure 1 is a structural schematic diagram of a water purification system provided by an embodiment of the present application.

[0028] The reference signs are:

[0029] 1, heating module; 2, heat exchanger; 3, first pipeline; 4, second pipeline; 5, rear carbon accommodating cavity; 6, first three-way control valve; 7, electric control valve; 8, second three-way control valve; 9, chloroform probe; 10, third on-off valve; 11, inflow port; 12, outflow port; 13, first temperature sensing bag; 14, second temperature sensing bag; 15, regulating valve; 16, first on-off valve; 17, second on-off valve; 18, faucet; 19, water purification branch; 20, RO membrane filter; 21, first heat exchange channel; 22, second heat exchange channel; 23, waste water on-off valve; 24, flow meter; 25, pressure stabilizing pump; 31, one end of the first pipeline; 32, the other end of the first pipeline; 41, one end of the second pipeline; 42, the other end of the second pipeline; 51, drain port; 52, second water outlet; 100, heating cavity; 101, water inlet; 102, first water outlet; 121, waste water outlet; 201, filtered water outlet; 211, one end of the first heat exchange channel; 212, the other end of the first heat exchange channel; 221, one end of the second heat exchange channel; 222, the other end of the second heat exchange channel. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature, and is in no way limiting on the present application and its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0031] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or positional relationship are generally based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the device or element indicated must have a specific orientation or be constructed and operated in a specific orientation, therefore it 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.

[0032] 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 drawing 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.

[0033] In addition, it should be noted that the use of the words "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, therefore it cannot be understood as a limitation on the scope of protection of the present application.

[0034] For reference Figure 1 As shown, according to the embodiment of the present application, a cleaning structure is provided for cleaning the post-carbon in the post-carbon accommodating cavity 5 of the water purification system. The cleaning structure includes a water inlet 101, a heating module 1 and a first water outlet 102. The cleaning structure introduces water through the water inlet 101. The heating module 1 is used to heat the water of the water inlet 101. The first water outlet 102 is used to communicate with the post-carbon accommodating cavity 5 to introduce the water heated by the heating module 1 into the post-carbon accommodating cavity 5.

[0035] The cleaning structure further includes a drain 51 communicating with the post-carbon accommodating cavity 5. Wherein, the drain 51 can be opened and closed according to the set frequency to adjust the pressure in the post-carbon accommodating cavity 5.

[0036] As the warm water has better cleaning effect on the post-activated carbon, in the above example, the heating module 1 can heat the water of the water inlet 101 into warm water, and then discharge the warm water into the post-activated carbon accommodating cavity 5 through the first water outlet 102, so as to clean the post-activated carbon by the warm water, such as real-time flushing or soaking, etc., stimulate the adsorption activity function of the post-activated carbon to remove chloroform, and improve the adsorption performance of the post-activated carbon. When the warm water continuously flows into the post-activated carbon accommodating cavity 5, the drain port 51 can be frequently opened and closed according to the set frequency to adjust the pressure in the post-activated carbon accommodating cavity 5, so that the warm water entering the post-activated carbon accommodating cavity 5 forms a pressure difference shock wave jet, bubbles are generated in the water, penetrate into the carbon, and the bubbles burst under the action of the pressure difference to form an impact force, thereby improving the cleaning effect on the post-activated carbon. Since the post-activated carbon is cleaned and its adsorption activity to remove chloroform is restored, the water purifier can still effectively remove chloroform through the post-activated carbon after being used for a period of time, thereby meeting the safety and health requirements of direct drinking water, and the service life of the post-activated carbon is also longer.

[0037] The foregoing heating module can be an instant heating module. The specific structure of the instant heating module is a prior art, which will not be described here. In a specific application example, as shown in Figure 1 The foregoing heating module 1 can have a heating cavity 100 with an inlet port 11 and an outlet port 12. The heating module 1 introduces the water of the water inlet 101 into the heating cavity 100 through the inlet port 11 for heating, and the outlet port 12 serves as the foregoing first water outlet 102. The technology of the heating cavity 100 for heating the water introduced into the interior is a prior art, which will not be described here.

[0038] In some embodiments, as shown in Figure 1 The foregoing cleaning structure can further include a heat exchanger 2. The heat exchanger 2 has first and second heat exchange channels 21 and 22 that can exchange heat with each other. One end 211 of the first heat exchange channel 21 communicates with the inlet port 11, and the other end 212 of the first heat exchange channel 21 can communicate with the water inlet 101, so that the water inlet 101 can communicate with the inlet port 11 through the first heat exchange channel 21. One end 221 of the second heat exchange channel 22 is used to communicate with the post-activated carbon accommodating cavity 5, and the other end 222 of the second heat exchange channel 22 can communicate with the first water outlet 102, so that the first water outlet 102 can communicate with the post-activated carbon accommodating cavity 5 through the second heat exchange channel 22.

[0039] In the above example, when the water inlet 101 is communicated with the inflow port 11 through the first heat exchange channel 21, and the first water outlet 102 is communicated with the rear carbon accommodating cavity 5 through the second heat exchange channel 22, the water in the water inlet 101 flows into the inflow port 11 through the first heat exchange channel 21, and then flows into the heating cavity 100 for heating, and the heated water flows into the rear carbon accommodating cavity 5 through the second heat exchange channel 22. Wherein, the heated water exchanges heat with the cold water in the first heat exchange channel 21 when flowing through the second heat exchange channel 22, so that the temperature of the water in the first heat exchange channel 21 is increased, so that the water in the first heat exchange channel 21 is more easily heated when entering the heating cavity 100; in addition, the heat exchanger 2 has the effect of uniform temperature, and the temperature of the heated water flowing through the second heat exchange channel 22 is reduced and more uniform, so as to improve the cleaning effect of the rear carbon.

[0040] In some embodiments, as shown in Figure 1 The aforementioned cleaning structure can further include a first pipeline 3 and a second pipeline 4. One end 31 of the first pipeline is communicated with the inflow port 11, and the other end 32 can be communicated with the water inlet 101, so that the water inlet 101 can be communicated with the inflow port 11 through the first pipeline 3. One end 41 of the second pipeline is used to communicate with the rear carbon accommodating cavity 5, and the other end 42 can be communicated with the first water outlet 102, so that the first water outlet 102 can be communicated with the rear carbon accommodating cavity 5 through the second pipeline 4.

[0041] Wherein, the cleaning structure of the present application has at least two modes. In the first mode, the water inlet 101 is communicated with the inflow port 11 through the first pipeline 3 and the first heat exchange channel 21, and the first water outlet 102 is communicated with the rear carbon accommodating cavity 5 through the second pipeline 4 and the second heat exchange channel 22. In the second mode, the water inlet 101 is communicated with the inflow port 11 through the first heat exchange channel 21 and the first pipeline 3, and the first water outlet 102 is communicated with the rear carbon accommodating cavity 5 through the second heat exchange channel 22 and the second pipeline 4.

[0042] In the above example, the cleaning structure can quickly heat the water to warm water in the first mode, and then introduce the warm water into the rear carbon accommodating cavity 5 to clean the rear carbon, which is more efficient. The cleaning structure can heat the water to boiling water in the second mode, and then reduce the temperature of the hot water to warm water through the heat exchanger 2 to introduce the warm water into the rear carbon accommodating cavity 5 to clean the rear carbon. Wherein, the heat exchanger 2 has the effect of uniform temperature, and the temperature of the heated water flowing through the second heat exchange channel 22 is reduced and more uniform, so as to improve the cleaning effect of the rear carbon. Wherein, the user can select different modes according to actual needs, so that the cleaning structure of the present application can be applied to different application scenarios.

[0043] In some embodiments, the water inlet 101 can be connected to the other end 212 of the first heat exchange channel and the other end 32 of the first pipe through a first valve structure. The first valve structure is configured to control the other end 32 of the first pipe to communicate with the water inlet 101 in both the other end 212 of the first heat exchange channel and the other end 32 of the first pipe in the first mode, and the first valve structure is also configured to control the other end 212 of the first heat exchange channel to communicate with the water inlet 101 in both the other end 212 of the first heat exchange channel and the other end 32 of the first pipe in the second mode.

[0044] In the above example, the water inlet 101 can communicate with the water inlet 11 through the first pipe 3 in both the first pipe 3 and the first heat exchange channel 21 in the first mode, and the water inlet 101 can communicate with the water inlet 11 through the first heat exchange channel 21 in both the first pipe 3 and the first heat exchange channel 21 in the second mode by the first valve structure.

[0045] In a specific application example, as shown in Figure 1 The first valve structure can include a first on-off valve 16 and a second on-off valve 17. The water inlet 101 is connected to the other end 212 of the first heat exchange channel through the first on-off valve 16, and the water inlet 101 is also connected to the other end 32 of the first pipe through the second on-off valve 17. In the first mode, the first on-off valve 16 is closed, and the second on-off valve 17 is opened. In the second mode, the first on-off valve 16 is opened, and the second on-off valve 17 is closed.

[0046] The first on-off valve 16 and the second on-off valve 17 can be solenoid valves, etc. As shown in Figure 1 The water inlet flow path of the first heat exchange channel 21 can be provided with a regulating valve 15 for controlling the water inlet flow rate of the water inlet flow path of the first heat exchange channel 21.

[0047] In some embodiments, the first water outlet 102 can be connected to the other end 222 of the second heat exchange channel and the other end 42 of the second pipe through a second valve structure. The second valve structure is configured to control the other end 42 of the second pipe to communicate with the first water outlet 102 in both the other end 222 of the second heat exchange channel and the other end 42 of the second pipe in the first mode, and the second valve structure is also configured to control the other end 222 of the second heat exchange channel to communicate with the first water outlet 102 in both the other end 222 of the second heat exchange channel and the other end 42 of the second pipe in the second mode.

[0048] In the above example, the first water outlet 102 is able to communicate with the post-carbon accommodating cavity 5 through the second pipe 4 in the second pipe 4 and the second heat exchange channel 22 in the first mode, and through the second heat exchange channel 22 in the second heat exchange channel 22 and the second pipe 4 in the second mode by the second valve structure.

[0049] In one specific application example, as shown in Figure 1 The second valve structure can include a third a-way control valve 6, and the first water outlet 102, the other end 222 of the second heat exchange channel and the other end 42 of the second pipe are respectively connected to the three interfaces of the third a-way control valve 6 one by one. The second valve structure controls the other end 42 of the second pipe to communicate with the first water outlet 102 in the second pipe 4 and the other end 42 of the second pipe 4 in the first mode, and controls the other end 222 of the second heat exchange channel to communicate with the first water outlet 102 in the second heat exchange channel 22 and the other end 42 of the second pipe 4 in the second mode.

[0050] In order to realize the function that the drain port 51 is able to be opened and closed according to the set frequency, in some embodiments, as shown in Figure 1 The drain port 51 can be opened and closed by an electric control valve 7. The cleaning structure further includes a controller for controlling the electric control valve 7 to be opened and closed according to the set frequency, so that the drain port 51 is opened and closed according to the set frequency. The electric control valve 7 can be a solenoid valve or the like. The controller can be a processor or a PLC logic controller or the like. The technology that the controller controls the electric control valve 7 to be opened and closed according to the set frequency is prior art, which will not be described here.

[0051] As shown in Figure 1As shown, the present application also provides a water purification system comprising the cleaning structure of any one of the above. Since the water purification system adopts the cleaning structure, the heating module 1 can heat the water at the water inlet 101 into warm water, and then discharge the warm water into the rear carbon accommodating cavity 5 through the first water outlet 102, so as to clean the rear carbon by warm water, such as real-time flushing or soaking, stimulate the adsorption activity function of the rear carbon to remove chloroform, and improve the adsorption performance of the rear carbon. When the warm water continuously flows into the rear carbon accommodating cavity 5, the drain port 51 can be frequently opened and closed according to the set frequency to adjust the pressure in the rear carbon accommodating cavity 5, so that the warm water entering the rear carbon accommodating cavity 5 forms a pressure difference shock wave jet, bubbles are generated in the water, penetrate into the carbon, and burst under the action of the pressure difference, forming an impact force, thereby improving the cleaning effect on the rear carbon. Since the rear carbon is cleaned and its adsorption activity to remove chloroform is restored, the water purifier can still effectively remove chloroform through the rear carbon after being used for a period of time.

[0052] In some embodiments, as shown in Figure 1 As shown, the foregoing water purification system has an RO membrane filter 20, which has a filtered water outlet 201 through which the RO membrane filter 20 discharges filtered water. The foregoing water inlet 101 is in communication with the filtered water outlet 201 to introduce water from the filtered water outlet 201.

[0053] In the foregoing example, the water quality at the filtered water outlet of the RO membrane filter 20 is good, and the cleaning structure introduces water with better water quality from the filtered water outlet through the water inlet 101, which is beneficial to improve the cleaning effect on the rear carbon.

[0054] In some embodiments, when the heating module 1 has a heating cavity 100, the heating cavity 100 has an inlet port 11 and an outlet port 12, and the heating module 1 introduces water at the water inlet 101 into the heating cavity 100 for heating through the inlet port 11, and the outlet port 12 serves as the foregoing first water outlet 102, the heating cavity 100 can be opened or closed. The heating function. Wherein the water purification system has a water purification mode and a rear carbon cleaning mode. In the water purification mode, the heating cavity 100 is closed; and in the rear carbon cleaning mode, the heating cavity 100 is opened.

[0055] In the foregoing example, the heating cavity 100 is closed in the water purification mode, at which time the heating cavity 100 only serves as a pipeline; the heating cavity 100 is opened in the rear carbon cleaning mode, at which time the heating cavity 100 heats the water introduced into the interior. The normal water purification flow path and the rear carbon cleaning flow path of the water purification system share the flow path of the heating cavity 100, so as to simplify the flow path structure and reduce the cost.

[0056] In some embodiments, as shown inFigure 1 As shown, the aforementioned water purification system further comprises a water purification branch 19. The post-carbon accommodating cavity 5 has a second water outlet 52, which is selectively communicated with one of the drain outlet 51 and the water purification branch 19 through a third valve structure, so that the second water outlet 52 can discharge sewage through the drain outlet 51 or discharge purified water through the water purification branch 19.

[0057] It should be noted that the aforementioned water purification branch 19 has a water outlet faucet 18.

[0058] In a specific application example, as shown in Figure 1 As shown, the aforementioned third valve structure can comprise a b three-way control valve 8, and one end of the water purification branch 19, the second water outlet 52 and the drain outlet 51 are respectively connected to the three interfaces of the b three-way control valve 8 in one-to-one correspondence. Among them, the third valve structure controls the communication of the second water outlet 52 with one of the drain outlet 51 and the water purification branch 19 through the b three-way control valve 8.

[0059] The application also provides a control method of the water purification system. The cleaning structure further comprises a first pipeline 3 and a second pipeline 4; one end 31 of the first pipeline is communicated with the inflow port 11, and the other end 32 can be communicated with the water inlet 101, so that the water inlet 101 can be communicated with the inflow port 11 through the first pipeline 3; one end 41 of the second pipeline is used to communicate with the post-carbon accommodating cavity 5, and the other end 42 can be communicated with the second water outlet 52, so that the second water outlet 52 can be communicated with the post-carbon accommodating cavity 5 through the second pipeline 4; and the cleaning structure has at least two modes. In the first mode, the water inlet 101 is communicated with the inflow port 11 through the first pipeline 3 of the two of the first pipeline 3 and the first heat exchange channel 21, and the second water outlet 52 is communicated with the post-carbon accommodating cavity 5 through the second pipeline 4 of the two of the second pipeline 4 and the second heat exchange channel 22; in the second mode, the water inlet 101 is communicated with the inflow port 11 through the first heat exchange channel 21 of the two of the first pipeline 3 and the first heat exchange channel 21, and the second water outlet 52 is communicated with the post-carbon accommodating cavity 5 through the second heat exchange channel 22 of the two of the second pipeline 4 and the second heat exchange channel 22, and when the heating cavity 100 can open or close the heating function, the water purification system has a first post-carbon cleaning mode. In the first post-carbon cleaning mode, the cleaning structure is in the aforementioned second mode, the third valve structure controls the communication of the second water outlet 52 with the drain outlet 51, the heating cavity 100 opens the heating function, and the drain outlet 51 opens and closes according to the set frequency.

[0060] When the chloroform content of the second water outlet 52 is greater than or equal to the first preset value, the water purification system is controlled to enter the first post-carbon cleaning mode, and the water purification system is continuously operated in the first post-carbon cleaning mode until the chloroform content of the second water outlet 52 is reduced to below the second preset value, and then the water purification system is controlled to exit the first post-carbon cleaning mode.

[0061] In the above example, when the chloroform content of the second water outlet 52 is greater than or equal to the first preset value, it indicates that the content of chloroform in the water purification system exceeds the standard, and the post-carbon needs to be cleaned. At this time, the water purification system is controlled to enter the first post-carbon cleaning mode, so that the post-carbon can be cleaned. When the chloroform content is reduced to below the second preset value, it indicates that the content of chloroform in the water purification system meets the standard, and the water purification system is controlled to exit the first post-carbon cleaning mode.

[0062] In some embodiments, the first preset value can be 15 mg / L, and the second preset value can be 10 mg / L.

[0063] In some embodiments, after the water purification system exits the first post-carbon cleaning mode, the drain port 51 is opened for a third preset time and then closed to drain the sewage in the post-carbon containing cavity 5. The third preset time can be 30 seconds.

[0064] In some embodiments, as shown in Figure 1 The water purification system further includes a first temperature sensing bag 13, a second temperature sensing bag 14, and a chloroform probe 9. The first temperature sensing bag 13 is used to detect the water temperature of the first water outlet 102. The second temperature sensing bag 14 is used to detect the water temperature of the second heat exchange channel 22. The chloroform probe 9 is used to detect the chloroform content of the second water outlet 52. The water purification system further includes a third switch valve 10, a flow meter 24, and a pressure stabilizing pump 25, which are all arranged on the water inlet pipeline of the RO membrane filter 20. The third switch valve 10 can be an electromagnetic valve or the like. The RO membrane filter 20 also has a waste water outlet 121, and a waste water switch valve 23 is arranged on the pipeline of the waste water outlet 121. The waste water switch valve 23 can be an electromagnetic valve or the like. The RO membrane filter 20 has an RO membrane to filter water through the RO membrane.

[0065] In the above-mentioned first post-carbon cleaning mode, the water temperature of the water outlet can be 50-60°C, and the flow rate in the water purification system can be 2.5-3.0 L / min.

[0066] In some embodiments, the water purifying system further has a second post-carbon cleaning mode, in which the cleaning structure is in the first mode, the third valve structure controls the second water outlet 52 to communicate with the drain 51, and the heating cavity 100 is in the heating function. When the water purifying system is in the first post-carbon cleaning mode for a first preset time, and the content of chloroform in the second water outlet 52 is still greater than or equal to the first preset value, it indicates that the first post-carbon cleaning mode cannot clean the post-carbon. At this time, the water purifying system is controlled to enter the second post-carbon cleaning mode, and the drain 51 is kept closed for a second preset time and then opened.

[0067] In the above example, the second post-carbon cleaning mode of the water purifying system is a soaking cleaning mode, in which the post-carbon is soaked in warm water during the time when the drain 51 is kept closed, which is beneficial to improve the ability of the post-carbon to effectively remove chloroform.

[0068] It should be noted that when the water purifying system includes a post-carbon cleaning mode, the post-carbon cleaning mode includes the first post-carbon cleaning mode and the second post-carbon cleaning mode described above.

[0069] In a specific application example, the second preset time described above can be 25-30 minutes. When the drain 51 is opened after the second preset time, the sewage in the post-carbon containing cavity 5 can be discharged.

[0070] It should be noted that when the drain 51 is kept closed for the second preset time and then opened, the drain 51 is opened for a fourth preset time and then closed to restore the drain 51 to the initial closed state. The fourth preset time can be 30 seconds.

[0071] In the second post-carbon cleaning mode described above, the water temperature of the water outlet can be 60-70℃, and the flow rate in the water purifying system can be 2.5-3.0 L / min.

[0072] The present application also provides a water purifier comprising the cleaning structure of any one of the above or comprising the water purification system of any one of the above. Due to the adoption of the cleaning structure or the water purification system, the heating module 1 can heat the water at the water inlet 101 into warm water, which is then discharged into the rear carbon accommodating cavity 5 through the first water outlet 102, so as to clean the rear carbon by warm water, such as real-time flushing or soaking, etc., stimulate the adsorption activity of the rear carbon to remove chloroform, and improve the adsorption performance of the rear carbon. When the warm water continuously flows into the rear carbon accommodating cavity 5, the drain outlet 51 can be frequently opened and closed according to the set frequency to adjust the pressure in the rear carbon accommodating cavity 5, so that the warm water entering the rear carbon accommodating cavity 5 forms a pressure difference shock wave jet, bubbles are generated in the water, penetrate into the carbon, and burst under the action of the pressure difference, forming an impact force, thereby improving the cleaning effect of the rear carbon. Due to the cleaning of the rear carbon, its adsorption activity to remove chloroform can be restored, so that the water purifier can still effectively remove chloroform through the rear carbon after being used for a period of time.

[0073] Those skilled in the art can easily understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0074] The above description is only the preferred embodiment of the present application, and should not be used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The above description is only the preferred embodiment of the present application, and should not be used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cleaning structure for cleaning a post-carbon in a post-carbon accommodating cavity (5) of a water purification system, characterized in that: The cleaning structure comprises a water inlet (101), a heating module (1) and a first water outlet (102), water is introduced through the water inlet (101), the heating module (1) is used for heating the water of the water inlet (101), and the first water outlet (102) is used for communicating with the rear carbon accommodating cavity (5) to introduce the water heated by the heating module (1) into the rear carbon accommodating cavity (5); the cleaning structure further comprises a drain port (51) in communication with the rear carbon accommodating cavity (5), wherein the drain port (51) can be opened and closed according to a set frequency to adjust the pressure in the rear carbon accommodating cavity (5); The heating module (1) has a heating cavity (100), the heating cavity (100) has an inlet (11) and an outlet (12), the heating module (1) introduces the water of the water inlet (101) into the heating cavity (100) for heating through the inlet (11), and the outlet (12) serves as the first water outlet (102); The cleaning structure further comprises a heat exchanger (2); the heat exchanger (2) has a first heat exchange channel (21) and a second heat exchange channel (22) capable of heat exchange with each other; one end (211) of the first heat exchange channel communicates with the inlet (11), and the other end (212) can communicate with the water inlet (101), so that the water inlet (101) can communicate with the inlet (11) through the first heat exchange channel (21); one end (221) of the second heat exchange channel is used for communicating with the rear carbon accommodating cavity (5), and the other end (222) can communicate with the first water outlet (102), so that the first water outlet (102) can communicate with the rear carbon accommodating cavity (5) through the second heat exchange channel (22); The cleaning structure further comprises a first pipeline (3) and a second pipeline (4); one end (31) of the first pipeline communicates with the inlet (11), and the other end (32) can communicate with the water inlet (101), so that the water inlet (101) can communicate with the inlet (11) through the first pipeline (3); one end (41) of the second pipeline is used for communicating with the rear carbon accommodating cavity (5), and the other end (42) can communicate with the first water outlet (102), so that the first water outlet (102) can communicate with the rear carbon accommodating cavity (5) through the second pipeline (4); The cleaning structure has at least two modes. In a first mode, the water inlet (101) is communicated with the inflow port (11) through the first pipe (3) and the first pipe (3) in the first heat exchange channel (21), and the first water outlet (102) is communicated with the rear carbon accommodating cavity (5) through the second pipe (4) and the second pipe (4) in the second heat exchange channel (22). In a second mode, the water inlet (101) is communicated with the inflow port (11) through the first heat exchange channel (21) in the first pipe (3) and the first heat exchange channel (21), and the first water outlet (102) is communicated with the rear carbon accommodating cavity (5) through the second heat exchange channel (22) in the second pipe (4) and the second pipe (4).

2. The cleaning structure according to claim 1, wherein: the water inlet (101) is connected with the other end (212) of the first heat exchange channel and the other end (32) of the first pipe through a first valve structure, the first valve structure being used for controlling the other end (32) of the first pipe to be communicated with the water inlet (101) in the first mode and controlling the other end (212) of the first heat exchange channel to be communicated with the water inlet (101) in the second mode; and / or, the first water outlet (102) is connected with the other end (222) of the second heat exchange channel and the other end (42) of the second pipe through a second valve structure, the second valve structure being used for controlling the other end (42) of the second pipe to be communicated with the first water outlet (102) in the first mode and controlling the other end (222) of the second heat exchange channel to be communicated with the first water outlet (102) in the second mode.

3. The cleaning structure according to any one of claims 1-2, wherein: the drain port (51) is opened and closed through an electric control valve (7); the cleaning structure further comprises a controller, the controller being used for controlling the electric control valve (7) to be opened and closed according to the set frequency, so that the drain port (51) is opened and closed according to the set frequency.

4. A water purification system characterized by: The cleaning structure comprises the cleaning structure according to any one of claims 1-3.

5. The water purification system of claim 4, wherein: The water purification system has an RO membrane filter (20) having a filtered water outlet (201), and the water inlet (101) is communicated with the filtered water outlet (201).

6. The water purification system of claim 5, wherein: When the heating module (1) has a heating cavity (100) with an inlet (11) and an outlet (12), and the heating module (1) heats water from the water inlet (101) through the inlet (11) into the heating cavity (100), and the outlet (12) is the first water outlet (102), the heating cavity (100) can be opened or closed; the water purification system has a water purification mode and a post-carbon cleaning mode, wherein in the water purification mode, the heating cavity (100) is closed; and in the post-carbon cleaning mode, the heating cavity (100) is opened.

7. The water purification system according to any one of claims 4-6, characterized in that: It also includes a water purification branch (19); The post-carbon containing cavity (5) has a second water outlet (52), which can be selectively communicated with one of the drain port (51) and the water purification branch (19) through a third valve structure.

8. A control method of the water purification system of claim 7, when the water purification system further includes the water purification structure of claim 1 or 2, and the heating cavity (100) can be opened or closed, characterized in that: The water purification system has a first post-carbon cleaning mode, in which the cleaning structure is in the second mode, the third valve structure controls the second water outlet (52) to communicate with the drain port (51), the heating cavity (100) is opened, and the drain port (51) is opened and closed according to the set frequency; wherein when the chloroform content of the second water outlet (52) is greater than or equal to the first preset value, the water purification system is controlled to enter the first post-carbon cleaning mode, and the water purification system is controlled to run in the first post-carbon cleaning mode until the chloroform content of the second water outlet (52) is reduced to below the second preset value, and then the water purification system is controlled to exit the first post-carbon cleaning mode.

9. The control method of claim 8, characterized in that: The water purification system has a second post-carbon cleaning mode, in which the cleaning structure is in the first mode, the third valve structure controls the second water outlet (52) to communicate with the drain port (51), and the heating cavity (100) is opened; wherein when the chloroform content of the second water outlet (52) is still greater than or equal to the first preset value after the water purification system runs in the first post-carbon cleaning mode for a first preset time, the water purification system is controlled to enter the second post-carbon cleaning mode, and the drain port (51) is controlled to remain closed for a second preset time before being opened.

10. The control method of claim 8 or 9, characterized in that: After the water purification system exits the first post-carbon cleaning mode, the drain port (51) is opened for a third preset time and then closed.

11. A water purifier characterized by comprising: It includes the cleaning structure of any one of claims 1-3, or the water purification system of any one of claims 4-7.

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