Water purifier

Abstract

The invention discloses a water purifier, and relates to the technical field of water purification equipment, and the water purifier comprises a housing, a raw water tank, a pure water tank, a filtering module, a heating module, a refrigeration module and a return pipe. A water outlet is formed in the shell; the raw water tank is detachably mounted on the shell; the pure water tank is detachably mounted on the shell; the filtering module is arranged in the shell, the water inlet side of the filtering module is communicated with the water outlet side of the raw water tank, and the water outlet side of the filtering module is communicated with the pure water tank; the heating module is arranged in the shell and is positioned on a flow path between the pure water tank and the water outlet; the refrigeration module is arranged in the shell; the refrigeration module comprises a water storage tank, a water storage cavity is formed in the water storage tank, and the water storage cavity communicates with the water outlet side of the pure water tank; one end of the backflow pipe is communicated with the water storage cavity, the other end of the backflow pipe is communicated with the filtering module, and water in the water storage cavity can flow into the filtering module through the backflow pipe to be filtered. The water purifier can solve the problems that water in the water tank has peculiar smell and is poor in water quality.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, in particular to a water purifier. Background Art

[0002] Water purifiers currently on the market are usually equipped with an insulation layer or a protective layer to keep the cold water in the water tank warm. However, when the water stored in the water tank is not used for a long time, the water will produce an odor. At the same time, when the water is heated or cooled in the water tank, the molecular materials of the insulation layer or the protective layer will evaporate during the heat dissipation of the heating module or the compressor, and evaporate into the water through the water tank or the pipe, causing the water to have an odor, affecting the water quality and taste, and giving users a bad water experience. Summary of the invention

[0003] The main purpose of the invention is to provide a water purifier, aiming to solve the problem that the water in the water tank has a peculiar smell and poor water quality.

[0004] In order to achieve the above-mentioned purpose, the water purifier proposed in the present invention includes a shell, a raw water tank, a pure water tank, a filter module, a heating module, a refrigeration module and a reflux pipe. The shell is provided with a water outlet: the raw water tank is detachably mounted on the shell; the pure water tank is detachably mounted on the shell; the filter module is arranged in the shell, the water inlet side of the filter module is connected to the water outlet side of the raw water tank, and the water outlet side of the filter module is connected to the pure water tank; the heating module is arranged in the shell and is located on the flow path between the pure water tank and the water outlet; the refrigeration module is arranged in the shell; the refrigeration module includes a water storage tank, a water storage cavity is formed in the water storage tank, and the water storage cavity is connected to the water outlet side of the pure water tank; one end of the reflux pipe is connected to the water storage cavity, and the other end is connected to the filtration module, and the water in the water storage cavity can flow to the filtration module through the reflux pipe for filtration.

[0005] In one embodiment, the filtration module includes a composite filter element, which includes a pre-filter element and a post-filter element. The water outlet side of the post-filter element is connected to the pure water tank, and the return pipe is connected to the water storage chamber and the water inlet side of the post-filter element.

[0006] In one embodiment, the filtration module also includes a reverse osmosis filter element, and a waterway plate is provided at the end of the filtration module, and the waterway plate is provided with a reflux port. A waterway flow channel connecting the pure water outlet side of the reverse osmosis filter element and the water inlet side of the post-filter element is formed in the waterway plate, and the reflux port is connected to the waterway flow channel; the water storage tank is provided with a first water outlet, and the reflux pipe is respectively connected to the first water outlet and the reflux port.

[0007] In one embodiment, the water purifier also includes at least one multi-way valve, which includes a first interface, a second interface and a third interface. The first interface is connected to the water storage chamber, the second interface is connected to the water outlet side of the pure water tank, and the third interface is connected to the reflux port and the water outlet.

[0008] In one embodiment, the multi-way valve is a three-way valve, and two of the three-way valves are provided, wherein one of the three-way valves has the first interface, the second interface, and the third interface, and the other three-way valve has a fourth interface, a fifth interface, and a sixth interface, the fourth interface is connected to the third interface, the fifth interface is connected to the reflux port, and the sixth interface is connected to the water outlet.

[0009] In one embodiment, the return port is disposed on a side surface of the waterway plate.

[0010] In one embodiment, the water purifier further comprises a reflux pump disposed on the reflux pipe, and the reflux pump is used to pump the water in the water storage chamber into the post-filter element for filtration.

[0011] In one embodiment, the reflux port is opened on a side of the waterway plate close to the reflux pump.

[0012] In one embodiment, the shell includes a base, and the water purifier further includes a first bracket and a second bracket, the first bracket and the second bracket are connected to the base, and the filter module is installed on the first bracket and the second bracket.

[0013] In one embodiment, in the up-down direction, the height of the first bracket is higher than the height of the second bracket, and the reflux pump is disposed on the first bracket.

[0014] In one embodiment, the water purifier further includes a booster pump, which is installed on the base and located below the filter module.

[0015] In one embodiment, the water purifier further includes an ice-making module, an ice storage bin is disposed in the water storage tank, the water storage cavity is formed below the ice storage bin, and the ice-making module is disposed above the ice storage bin.

[0016] In one embodiment, the ice-making module includes an ice maker and an ice-making box, the ice maker is arranged above the ice-making box, the water storage tank is also provided with a second water outlet and a circulating water inlet connected by a pipeline, the second water outlet is connected to the water storage chamber, the circulating water inlet is connected to the ice-making box, a circulating pump is arranged between the second water outlet and the circulating water inlet, and the circulating pump is used to pump the water in the water storage chamber into the ice-making box for making ice.

[0017] The technical solution of the present invention connects the water storage chamber of the refrigeration module water storage tank with the filter module through a reflux pipe, so that the water in the water storage tank can flow back to the filter module through the reflux pipe for filtration, thereby eliminating the odor of the water in the water storage tank, improving the water quality and taste, and enhancing the user's water experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of an embodiment of a water purifier provided by the present invention;

[0020] Figure 2 for Figure 1 Structural diagram of the water purifier from another perspective:

[0021] Figure 3 for Figure 1 Front view of the water purifier structure:

[0022] Figure 4 for Figure 3 A cross-sectional view of the water purifier structure along line II;

[0023] Figure 5 for Figure 3 The cross-sectional view of the water purifier structure along the KK line;

[0024] Figure 6 for Figure 1 Schematic diagram of the internal structure of the water purifier:

[0025] Figure 7 for Figure 6 Structural diagram of another perspective of the structure:

[0026] Figure 8 for Figure 7 A partial enlarged view of the middle A;

[0027] Fig. 9 for Figure 6 Structural diagram of the middle structure from another perspective:

[0028] Fig.10 for Fig. 9 A partial enlarged view of point B in the middle;

[0029] Fig.11 for Fig. 9 Schematic diagram of the structure of the refrigeration module.

[0030] Description of Figure Numbers:

[0031] 10. Water purifier;

[0032] 1. Shell; 11. Water outlet; 12. Ice outlet; 13. Base; 2. Raw water tank; 3. Pure water tank;

[0033] 4. Filter module; 41. Composite filter element; 42. Reverse osmosis filter element; 43. Waterway plate; 431. Backflow port;

[0034] 5. Heating module; 6. Refrigeration module; 61. Water storage tank; 61a. Water storage chamber; 611. First water inlet; 612. Second water inlet; 613. Circulating water inlet; 7. Ice making module; 71. Ice maker; 72. Ice making box;

[0035] 81. first bracket; 82. second bracket; 91. ice storage bin; 92. ice discharging unit;

[0036] 100, reflux pump; 200, booster pump; 300, circulation pump.

[0037] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] Water purifiers currently on the market are usually equipped with an insulation layer or a protective layer to keep the cold water in the water tank warm. However, when the water stored in the water tank is not used for a long time, the water will produce an odor. At the same time, when the water is heated or cooled in the water tank, the molecular materials of the insulation layer or the protective layer will evaporate during the heat dissipation of the heating module or the compressor, and evaporate into the water through the water tank or the pipe, causing the water to have an odor, affecting the water quality and taste, and giving users a bad water experience.

[0042] The present invention provides a water purifier which can reflux water in a water tank and filter it again, so as to solve the problem that the water in the water tank has peculiar smell and poor water quality.

[0043] See also Figures 1 to 7 In one embodiment of the present invention, the water purifier 10 includes a housing 1, a raw water tank 2, a pure water tank 3, a filter module 4, a heating module 5, a refrigeration module 6 and a return pipe (not shown in the figure). The housing 1 is provided with a water outlet 11: the raw water tank 2 is detachably mounted on the housing 1; the pure water tank 3 is detachably mounted on the housing 1; the filter module 4 is arranged in the housing 1, the water inlet side of the filter module 4 is connected to the water outlet side of the raw water tank 2, and the water outlet side of the filter module 4 is connected to the pure water tank 3; the heating module 5 is arranged in the housing 1 and is located on the flow path between the pure water tank 3 and the water outlet 11; the refrigeration module 6 is arranged in the housing 1; the refrigeration module 6 includes a water storage tank 61, a water storage chamber 61a is formed in the water storage tank 61, and the water storage chamber 61a is connected to the water outlet side of the pure water tank 3; one end of the return pipe is connected to the water storage chamber 61a, and the other end is connected to the filter module 4, and the water in the water storage chamber 61a can flow to the filter module 4 through the return pipe for filtration.

[0044] Specifically, see Figure 6 and Figure 7, the shell 1 includes a base 13, a plurality of side shells arranged on the base 13 and a top cover connected to the side shells, the plurality of side shells can be arranged in one piece, and the plurality of side shells can also be formed in one piece with the top cover. An installation space for installing the filter module 4, the heating module 5, the refrigeration module 6 and the water pump, the pipeline and other structures is formed in the shell 1. A water outlet 11 is provided on the shell 1, and the water outlet 11 is used to discharge water for the user to drink. The water outlet 11 is arranged on the front side of the shell 1, and the number of water outlets 11 is at least one. In the present embodiment, there is one water outlet 11, and the water outlet 11 can be used to discharge hot water, cold water and normal temperature water. The water of three water outlet temperatures flows out through one water outlet 11, reducing the number of water outlets 11 and simplifying the structural design. Of course, in other embodiments, the number of the water outlets 11 can also be set to multiple, and there is no specific restriction on this.

[0045] See also Figure 1 and Figure 6 , the raw water tank 2 is detachably mounted on the housing 1. Specifically, a waterway joint is mounted on the base 13 of the housing 1. When the raw water tank 2 is mounted on the housing 1, the water in the raw water tank 2 is connected to the waterway system of the water purifier 10 through the waterway joint. The raw water tank 2 is mainly used to contain raw water (i.e., tap water), and the raw water tank 2 serves as the water source of the waterway system of the water purifier 10. The pure water tank 3 is detachably mounted on the housing 1. Similarly, a waterway structure corresponding to the pure water tank 3 is mounted on the base 13 of the housing 1 to achieve connection between the pure water tank 3 and the waterway system of the water purifier 10.

[0046] See also Figure 6 and Figure 7 The filter module 4 is arranged in the housing 1, and the water inlet side of the filter module 4 is connected to the water outlet side of the raw water tank 2, and the water outlet side of the filter module 4 is connected to the pure water tank 3. The water in the raw water tank 2 can be filtered by the filter module 4 and then flow into the pure water tank 3 for storage. The filter module 4 includes at least one filter element, which can be an RO membrane reverse osmosis filter element 42, an activated carbon filter element or a PP filter element.

[0047] See also Figure 6 The heating module 5 is arranged in the housing 1 and is located on the flow path between the pure water tank 3 and the water outlet 11. It should be noted that the heating module 5 is an instant heating module for heating the water flowing through. After the water in the pure water tank 3 flows through the heating module 5, the normal temperature water in the pure water tank 3 can be heated by the heating module 5 to high temperature water for users to drink. The water temperature of the high temperature water can be selected by the user according to the needs, for example but not limited to 45℃, 60℃, 75℃, 80℃, 85℃, 95℃, 100℃.

[0048] See also Figure 6 and Fig. 9, the refrigeration module 6 is arranged in the housing 1, and the refrigeration module 6 includes a water storage tank 61, and a water storage chamber 61a for storing water is formed in the water storage tank 61, and the water storage chamber 61a is connected to the water outlet side of the pure water tank 3. The water in the pure water tank 3 can flow into the water storage tank 61 through a pipeline, and the water in the water storage tank 61 is refrigerated by the relevant refrigeration structure of the refrigeration module 6, and the water storage chamber 61a is also connected to the water outlet 11, so that the refrigerated water can flow out through the water outlet 11 for the user to drink. Similarly, the user can choose the water temperature of the cold water according to the needs, for example but not limited to 1°C, 3°C, 5°C, 8°C.

[0049] See also Figure 4 It is worth mentioning that a reflux pipe (not shown in the figure) is also provided in the shell 1 of the water purifier 10, and the reflux pipe connects the water storage chamber 61a and the filter module 4, and the water in the water storage tank 61 can flow back to the filter module 4 through the reflux pipe for filtration. It should be noted that the water in the water storage tank 61 is the water in the pure water tank 3 pumped into the water storage chamber 61a by a water pump, that is, the water in the water storage chamber 61a is the water filtered by the filter module 4, and when the water in the water storage chamber 61a is not used for a long time, and when the water purifier 10 is in the process of making water, the heating module 5 in the shell 1 or the compressor is in the process of heat dissipation, the molecular materials of the thermal insulation layer or the protective layer will volatilize and volatilize into the water through the water tank or the pipe, which will cause odor in the water, and the water quality and taste are poor. Therefore, by setting the reflux pipe, the water in the water storage tank 61 can be returned to the filter module 4 for filtration again to improve the water quality and taste.

[0050] The technical solution of the present invention connects the water storage chamber 61a of the water storage tank 61 of the refrigeration module 6 with the filter module 4 through a reflux pipe, so that the water in the water storage tank 61 can flow back to the filter module 4 through the reflux pipe for filtration, thereby eliminating the odor of the water in the water storage tank 61, improving the water quality and taste, and enhancing the user's water experience.

[0051] See also Figure 6 and Figure 7 In one embodiment, the filter module 4 includes a composite filter element 41, which includes a pre-filter element (not shown in the figure) and a post-filter element (not shown in the figure). The water outlet side of the post-filter element is connected to the pure water tank 3, and the return pipe connects the water storage chamber 61a and the water inlet side of the post-filter element.

[0052] Specifically, the filter module 4 includes a composite filter element 41, which includes a pre-filter element and a post-filter element. The pre-filter element is located upstream of the post-filter element, and the water outlet side of the post-filter element is connected to the pure water tank 3. The water filtered by the post-filter element can flow directly into the pure water tank 3. The return pipe is connected to the water storage chamber 61a of the water storage tank 61 and the water inlet side of the post-filter element, respectively. That is to say, the water in the water storage chamber 61a can be discharged to the post-filter element through the return pipe for filtration. This design, on the one hand, reduces the flow path of the water flow when the water in the water storage chamber 61a is filtered again. On the other hand, since the purpose of filtering the water in the water storage chamber 61a again is to remove the odor in the water and improve the water quality and taste, the above-mentioned filtering effect can be achieved only through the action of the post-filter element. Therefore, the return pipe can be directly connected to the water inlet side of the post-filter element, and the service life of the pre-filter element is also guaranteed.

[0053] Furthermore, the filtration module 4 also includes a reverse osmosis filter element 42, and a waterway plate 43 is provided at the end of the filtration module 4, and the waterway plate 43 is provided with a reflux port 431. A waterway flow channel (not shown in the figure) connecting the pure water outlet side of the reverse osmosis filter element 42 and the water inlet side of the post-filter element is formed in the waterway plate 43, and the reflux port 431 is connected to the waterway flow channel; the water storage tank 61 is provided with a first water outlet 611, and the reflux pipe is respectively connected to the first water outlet 611 and the reflux port 431.

[0054] Specifically, the reverse osmosis filter element 42 is located between the flow paths of the pre-filter element and the post-filter element. The pre-filter element is also commonly referred to as a pre-filter, which is a filter element installed at the front end of the water system. Its main function is to remove large particles of impurities in the water, such as suspended matter, silt, rust, etc. If these impurities flow directly into the downstream of the water system, they may damage the equipment and shorten its service life. Therefore, the pre-filter element plays a role in protecting subsequent equipment and improving the overall water quality. In addition, the pre-filter element can also remove some organic matter, residual chlorine and foreign color and odor, providing more favorable conditions for subsequent deep purification. The reverse osmosis filter element 42 is one of the core components of the filtration system. It uses the reverse osmosis principle to separate the solute from the solvent in the water through the selective interception of the semipermeable membrane. Specifically, the reverse osmosis filter element 42 can remove impurities such as metal ions, bacteria, viruses, organic matter, etc. in the water, thereby obtaining high-quality drinking water. The filtering effect of this filter element is very thorough, which can effectively improve the quality and safety of water. The post-filter is usually located at the last step of the water system, responsible for further removing impurities and odors from the water, and improving the taste and purity of the water. Although most of the impurities and pollutants have been removed from the water after being treated by the pre-filter and reverse osmosis filter 42, some tiny impurities or odors may still remain. The post-filter can further remove these residues through its sophisticated filtering materials and adsorption capacity, making the water clearer, purer and tastier. At the same time, the post-filter can also prevent impurities and pollutants in the water from accumulating in subsequent equipment, thereby extending the service life of the equipment.

[0055] See also Figure 8 and Fig.11 The end of the filter module 4 is provided with a waterway plate 43, and the waterway plate 43 is provided with a plurality of waterway interfaces for connecting the water inlet and water outlet of the pre-filter element, the post-filter element and the reverse osmosis filter element 42. Specifically, the waterway plate 43 is provided with a pre-filter element water inlet, a pre-filter element water outlet, a reverse osmosis filter element water inlet, a waste water outlet and a post-filter element water outlet. Further, the water storage tank 61 is provided with a first water port 611, and the first water port 611 is connected to the water storage chamber 61a. A waterway flow channel (not shown in the figure) connecting the pure water outlet side of the reverse osmosis filter element 42 and the water inlet side of the post-filter element is also formed in the waterway plate 43. The waterway plate 43 is also provided with a reflux port 431, and the reflux port 431 is used to connect the reflux pipe, and the reflux port 431 is connected to the waterway flow channel, so that the water storage chamber 61a can be connected to the water inlet side of the post-filter element through the reflux pipe.

[0056] In one embodiment, the water purifier 10 also includes at least one multi-way valve (not shown in the figure), the multi-way valve includes a first interface, a second interface and a third interface, the first interface is connected to the water storage chamber 61a, the second interface is connected to the water outlet side of the pure water tank 3, and the third interface is connected to the reflux port 431 and the water outlet 11.

[0057] Specifically, the water purifier 10 can also be provided with a multi-way valve, one interface of the multi-way valve is connected to the water storage chamber 61a, and the other interfaces are connected to the pure water tank 3, the reflux port 431 and the water outlet 11. The connection between the water storage chamber 61a and the pure water tank 3, the reflux port 431 and the water outlet 11 is achieved through the multi-way valve. Such a setting can reduce the design of the water channel interface on the water storage tank 61, and the direction and layout of the pipeline in the shell 1 can be further reasonably planned through the multi-way valve, and the pipeline layout is optimized to avoid multiple pipelines being directly connected to the water storage chamber 61a through the water channel interface on the water storage tank 61.

[0058] Further, the multi-way valve is a three-way valve, and two three-way valves are provided, one of which has a first interface, a second interface and a third interface, and the other three-way valve has a fourth interface, a fifth interface and a sixth interface, the fourth interface and the third interface are connected, the fifth interface is connected to the reflux port 431, and the sixth interface is connected to the water outlet 11. In this way, through the design of two three-way valves, the first interface of the first three-way valve is connected to the water storage chamber 61a, the second interface is connected to the water inlet of the water storage chamber 61a, and the third interface is connected to the water outlet of the water storage chamber 61a. The water inlet refers to the waterway for external water to be replenished in the water storage chamber 61a, that is, the water in the pure water tank 3 flows to the water storage tank 61. The water outlet refers to the waterway for the water in the water storage tank 61 to flow out, including the water in the water storage chamber 61a flowing back to the side of the post-filter element, and the water in the water storage chamber 61a flowing to the water outlet 11 for users to use. Since the water outlet includes two water outlets, two three-way valves are provided. The fourth interface of the second three-way valve is connected to the third interface, the fifth interface is connected to the reflux port 431, and the sixth interface is connected to the water outlet 11 to realize the function of the aforementioned water circuit.

[0059] See also Figure 8 In one embodiment, the reflux port 431 is disposed on the side of the waterway plate 43. Specifically, the reflux port 431 is disposed on the side of the waterway plate 43. On the one hand, since a waterway flow channel is formed in the waterway plate 43 to connect the pure water outlet side of the reverse osmosis filter element 42 and the water inlet side of the post-filter element, the reflux port 431 is disposed on the side of the waterway plate 43 to directly connect with the waterway flow channel and avoid other waterway interfaces on the waterway plate 43 to prevent interference. On the other hand, since the reflux port 431 needs to be connected with the water storage chamber 61a through a pipeline, the reflux port 431 is disposed on the side of the waterway plate 43 to facilitate the connection of the pipeline and the installation of the joint.

[0060] See also Figure 7 and Figure 8In one embodiment, the water purifier 10 further includes a reflux pump 100 disposed on the reflux pipe, and the reflux pump 100 is used to pump the water in the water storage chamber 61a to the post-filter element for filtration. Specifically, the reflux pump 100 is disposed on the flow path between the water storage chamber 61a and the water inlet side of the post-filter element, that is, disposed on the reflux pipe, so as to pump the water in the water storage chamber 61a to the post-filter element for filtration. The type of the reflux pump 100 can be a diaphragm pump.

[0061] Furthermore, the reflux port 431 is provided on a side of the waterway plate 43 close to the reflux pump 100. This arrangement can make the distance between the reflux port 431 and the reflux pump 100 closer, shorten the length of the pipeline, and facilitate the arrangement and installation of the pipeline.

[0062] See also Figure 8 In one embodiment, the housing 1 includes a base 13, and the water purifier 10 also includes a first bracket 81 and a second bracket 82, the first bracket 81 and the second bracket 82 are connected to the base 13, and the filter module 4 is installed on the first bracket 81 and the second bracket 82. Specifically, the first bracket 81 and the second bracket 82 are fixedly installed on the base 13, and the first bracket 81 and the second bracket 82 extend upward and are arranged at intervals. The first bracket 81 is used to be fixedly connected to one side of the filter module 4, and the second bracket 82 is used to be fixedly connected to the other side of the filter module 4, so that the filter module 4 is fixedly installed in the housing 1 through the first bracket 81 and the second bracket 82.

[0063] Furthermore, in the up-down direction, the height of the first bracket 81 is higher than the height of the second bracket 82, and the reflux pump 100 is arranged on the first bracket 81. Installing the reflux pump 100 on the first bracket 81 can, on the one hand, make the distance between the reflux pump 100 and the filter module 4 closer, which is convenient for the arrangement of the pipeline, and on the other hand, can reasonably utilize the installation space in the housing 1 of the water purifier 10. Among them, the up-down direction refers to the up-down direction of the water purifier 10 when it is in use, which can also be understood as the vertical direction.

[0064] See also Figure 7 and Figure 8 In one embodiment, the water purifier 10 further includes a booster pump 200, which is installed on the base 13 and is located below the filter module 4. Specifically, in order to reasonably utilize the installation space in the housing 1, the booster pump 200 is installed on the base 13, located between the first bracket 81 and the second bracket 82, and located below the filter module 4, so that the internal structure of the water purifier 10 is compact and the water purifier 10 is miniaturized. The type of the booster pump 200 can be a diaphragm pump.

[0065] See also Figures 5 to 7In one embodiment, the water purifier 10 further includes an ice-making module 7, an ice storage bin 91 is provided in the water storage tank 61, a water storage chamber 61a is formed below the ice storage bin 91, and the ice-making module 7 is provided above the ice storage bin 91. Specifically, in order to enrich the functions of the water purifier 10 and improve the user experience, the water purifier 10 further includes an ice-making module 7, an ice storage bin 91 is provided in the water storage tank 61, and the ice storage bin 91 is used to store ice cubes made by the ice-making module 7. The ice storage bin 91 divides the internal space of the water storage tank 61 into two parts, the lower part of the ice storage bin 91 is the water storage chamber 61a, and the ice-making module 7 is installed above the ice storage bin 91, and the ice cubes made by the ice-making module 7 can be directly dropped into the ice storage bin 91 for storage. An ice outlet 12 is also provided on the shell 1, and the ice outlet 12 is located on the front side of the shell 1; the ice outlet 12 is connected to the ice storage bin 91, and an ice outlet component 92 is provided in the ice storage bin 91. When a user needs to obtain ice cubes, the ice outlet component 92 works to move the ice cubes in the ice storage bin 91 to the ice outlet 12 for ice discharging for the user to use.

[0066] See also Figure 5 Furthermore, the ice making module 7 includes an ice maker 71 and an ice box 72. The ice maker 71 is arranged above the ice box 72. The water storage tank 61 is also provided with a second water inlet 612 and a circulating water inlet 613 connected by a pipeline (see Fig.10 ), the second water inlet 612 is connected to the water storage chamber 61a, the circulating water inlet 613 is connected to the ice making box 72, and a circulating pump 300 is arranged between the second water inlet 612 and the circulating water inlet 613. The circulating pump 300 is used to pump the water in the water storage chamber 61a to the ice making box 72 for ice making. The type of the circulating pump 300 can be a diaphragm pump.

[0067] Specifically, the ice maker 71 is located above the ice box 72, and at least a portion of the ice maker 71 extends into the ice box 72. The water storage tank 61 is provided with a second water inlet 612 and a circulating water inlet 613 connected by a pipeline, and the circulating pump 300 can pump the water in the water storage chamber 61a into the ice box 72 through the second water inlet 612 and the circulating water inlet 613 in sequence, so that the water in the ice box 72 and the ice maker 71 interact with each other to make ice. It should be noted that the water pumped into the ice box 72 through the second water inlet 612 and the circulating water inlet 613 is live water, that is, the water in the water storage chamber 61a will be continuously pumped into the ice box 72 through the action of the circulating pump 300, and the ice maker 71 first refrigerates the water in the ice box 72 during the process of making ice for the water in the ice box 72. Since the water in the water storage chamber 61a will continuously flow into the ice box 72, the low-temperature water in the ice box 72 after being cooled by the ice maker 71 will overflow and flow back into the water storage chamber 61a through the ice storage bin 91 or other water-leaking structures. The water in the water storage chamber 61a and the ice box 72 is a dynamic circulation process, and the ice maker 71 plays the role of making ice and cooling the water in the water storage chamber 61a at the same time.

[0068] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water purifier, characterized in that: include: The shell is provided with a water outlet: A raw water tank, detachably mounted on the housing; A pure water tank, detachably mounted on the housing; A filter module is disposed in the housing, wherein the water inlet side of the filter module is connected to the water outlet side of the raw water tank, and the water outlet side of the filter module is connected to the pure water tank; A heating module is arranged in the housing and located on the flow path between the pure water tank and the water outlet; A refrigeration module is arranged in the housing; the refrigeration module comprises a water storage tank, a water storage cavity is formed in the water storage tank, and the water storage cavity is communicated with the water outlet side of the pure water tank; as well as A reflux pipe, one end of which is connected to the water storage chamber, and the other end of which is connected to the filter module. Water in the water storage chamber can flow through the reflux pipe to the filter module for filtration.

2. The water purifier according to claim 1, characterized in that The filter module comprises a composite filter element, which comprises a front filter element and a rear filter element. The water outlet side of the rear filter element is connected to the pure water tank, and the return pipe is connected to the water storage cavity and the water inlet side of the rear filter element.

3. The water purifier according to claim 2, characterized in that: The filtration module also includes a reverse osmosis filter element, and a waterway plate is arranged at the end of the filtration module. The waterway plate is provided with a reflux port, and a waterway flow channel connecting the pure water outlet side of the reverse osmosis filter element and the water inlet side of the post-filter element is formed in the waterway plate, and the reflux port is connected to the waterway flow channel; the water storage tank is provided with a first water outlet, and the reflux pipe is respectively connected to the first water outlet and the reflux port.

4. The water purifier according to claim 3, characterized in that: The water purifier also includes at least one multi-way valve, which includes a first interface, a second interface and a third interface. The first interface is connected to the water storage chamber, the second interface is connected to the water outlet side of the pure water tank, and the third interface is connected to the reflux port and the water outlet.

5. The water purifier according to claim 4, characterized in that: The multi-way valve is a three-way valve, and two of the three-way valves are provided, one of which has the first interface, the second interface and the third interface, and the other of which has a fourth interface, a fifth interface and a sixth interface, the fourth interface is connected to the third interface, the fifth interface is connected to the reflux port, and the sixth interface is connected to the water outlet.

6. The water purifier according to claim 3, characterized in that: The reflux port is arranged on the side of the waterway plate.

7. The water purifier according to claim 6, characterized in that The water purifier further comprises a reflux pump arranged on the reflux pipe, and the reflux pump is used for pumping the water in the water storage chamber to the post-filter element for filtration.

8. The water purifier according to claim 7, characterized in that The reflux port is opened on a side of the waterway plate close to the reflux pump.

9. The water purifier according to claim 7, characterized in that: The shell includes a base, and the water purifier also includes a first bracket and a second bracket, the first bracket and the second bracket are connected to the base, and the filter module is installed on the first bracket and the second bracket.

10. The water purifier according to claim 9, characterized in that In the up-down direction, the height of the first bracket is higher than that of the second bracket, and the reflux pump is disposed on the first bracket.

11. The water purifier according to claim 9, characterized in that The water purifier further comprises a booster pump, which is installed on the base and located below the filter module.

12. The water purifier according to any one of claims 1 to 11, characterized in that: The water purifier further comprises an ice-making module. An ice storage bin is arranged in the water storage tank. The water storage cavity is formed below the ice storage bin. The ice-making module is arranged above the ice storage bin.

13. The water purifier according to claim 12, characterized in that: The ice-making module includes an ice maker and an ice-making box, wherein the ice maker is arranged above the ice-making box, and the water storage tank is also provided with a second water outlet and a circulating water inlet which are connected by a pipeline, wherein the second water outlet is connected to the water storage chamber, and the circulating water inlet is connected to the ice-making box, and a circulating pump is arranged between the second water outlet and the circulating water inlet, and the circulating pump is used to pump the water in the water storage chamber into the ice-making box for making ice.

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