Water purifier

Abstract

The utility model discloses a water purifier, which relates to the technical field of water purification equipment and comprises a shell, a raw water tank, a pure water tank, a filter 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 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 disclosed by the utility model can solve the problems that water in the water tank has peculiar smell and the water quality is poor.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a water purifier. Background Technology

[0002] Most water purifiers on the market today have an insulation or protective layer to keep the cold water in the tank warm. However, if the water stored in the tank is not used for a long time, it will develop an odor. Furthermore, when heating or cooling the water, the insulation or protective layer's molecular materials evaporate during the heat dissipation process of the heating module or compressor. This evaporation can then seep into the water through the tank or pipes, causing an unpleasant odor, affecting water quality and taste, and resulting in a poor user experience. Utility Model Content

[0003] The main purpose of this utility model is to propose a water purifier that aims to solve the problems of water with odor and poor water quality in the water tank.

[0004] To achieve the above objectives, this utility model proposes a water purifier comprising a shell, a raw water tank, a pure water tank, a filter module, a cooling module, and a return pipe. The shell has an outlet; the raw water tank is detachably installed in the shell; the pure water tank is detachably installed in the shell; the filter module is disposed within the shell, with its inlet side connected to the outlet side of the raw water tank and its outlet side connected to the pure water tank; the cooling module is disposed within the shell; the cooling module includes a water storage tank, which forms a water storage cavity that is connected to the outlet side of the pure water tank; one end of the return pipe is connected to the water storage cavity, and the other end is connected to the filter module, allowing water in the water storage cavity to flow through the return pipe to the filter module 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 outlet side of the post-filter element is connected to the pure water tank, and the return pipe connects the water storage chamber and the inlet side of the post-filter element.

[0006] In one embodiment, the filtration module further includes a reverse osmosis filter element, and a water channel plate is provided at the end of the filtration module. The water channel plate has a return port, and a water flow channel is formed inside the water channel plate, connecting the pure water outlet side of the reverse osmosis filter element and the water inlet side of the post-filter element. The return port is connected to the water flow channel. The water storage tank has a first water outlet, and the return pipe is connected to the first water outlet and the return port respectively.

[0007] In one embodiment, the water purifier further 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 outlet side of the pure water tank, and the third interface is connected to the reflux port and the outlet.

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

[0009] In one embodiment, the return port is located on the side of the water channel plate.

[0010] In one embodiment, the water purifier further includes a return pump disposed on the return pipe, the return pump being used to pump water from the water storage chamber to the post-filter cartridge for filtration.

[0011] In one embodiment, the return port is located on the side of the water circuit board near the return pump.

[0012] In one embodiment, the housing includes a base, and the water purifier further includes a first bracket and a second bracket, the first bracket and the second bracket being connected to the base, and the filter module being mounted on the first bracket and the second bracket.

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

[0014] In one embodiment, the water purifier further includes a booster pump, which is mounted 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 compartment is provided inside the water storage tank, the water storage cavity is formed below the ice storage compartment, and the ice-making module is disposed above the ice storage compartment.

[0016] In one embodiment, the ice-making module includes an ice maker and an ice-making box. The ice maker is disposed above the ice-making box. The water storage tank is also provided with a second water inlet and a circulating water inlet connected by a pipeline. The second water inlet is connected to the water storage chamber, and the circulating water inlet is connected to the ice-making box. A circulating pump is provided between the second water inlet and the circulating water inlet. The circulating pump is used to pump water from the water storage chamber to the ice-making box to make ice.

[0017] The technical solution of this utility model connects the water storage chamber of the cooling module's water tank and the filter module through a return pipe, allowing water in the storage tank to flow back to the filter module for filtration. This eliminates odors in the water in the storage tank, improves water quality and taste, and enhances the user's water experience. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A schematic diagram of a water purifier embodiment provided by this utility model;

[0020] Figure 2 for Figure 1 Another structural diagram of a water purifier:

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

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

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

[0024] Figure 6 for Figure 1 Internal structure diagram of a water purifier:

[0025] Figure 7 for Figure 6 Another structural diagram of the middle structure:

[0026] Figure 8 for Figure 7 A magnified view of a section at point A in the middle;

[0027] Figure 9 for Figure 6 Another structural diagram from the perspective of the medium structure:

[0028] Figure 10 for Figure 9 A magnified view of a section at point B in the middle;

[0029] Figure 11 for Figure 9A schematic diagram of the cooling module.

[0030] Explanation of icon numbers:

[0031] 10. Water purifier;

[0032] 1. Shell; 11. 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. Water circuit board; 431. Return port;

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

[0035] 81. First support frame; 82. Second support frame; 91. Ice storage chamber; 92. Ice dispensing component;

[0036] 100. Reflux pump; 200. Booster pump; 300. Circulation pump.

[0037] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0039] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0041] Most water purifiers on the market today have an insulation or protective layer to keep the cold water in the tank warm. However, if the water stored in the tank is not used for a long time, it will develop an odor. Furthermore, when heating or cooling the water, the insulation or protective layer's molecular materials evaporate during the heat dissipation process of the heating module or compressor. This evaporation can then seep into the water through the tank or pipes, causing an unpleasant odor, affecting water quality and taste, and resulting in a poor user experience.

[0042] This utility model proposes a water purifier that can recirculate and filter the water in the tank to solve the problems of odor and poor water quality in the water tank.

[0043] Please see Figures 1 to 7 In one embodiment of this utility model, 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 cooling module 6, and a return pipe (not shown in the figure). The housing 1 has an outlet 11; the raw water tank 2 is detachably installed on the housing 1; the pure water tank 3 is detachably installed on the housing 1; the filter module 4 is disposed inside the housing 1, with its inlet side connected to the outlet side of the raw water tank 2, and its outlet side connected to the pure water tank 3; the heating module 5 is disposed inside the housing 1 and located in the flow path between the pure water tank 3 and the outlet 11; the cooling module 6 is disposed inside the housing 1; the cooling module 6 includes a water storage tank 61, which forms a water storage cavity 61a, connected to the outlet side of the pure water tank 3; one end of the return pipe is connected to the water storage cavity 61a, and the other end is connected to the filter module 4, allowing water in the water storage cavity 61a to flow through the return pipe to the filter module 4 for filtration.

[0044] Specifically, please refer to Figure 6 and Figure 7The housing 1 includes a base 13, multiple side shells disposed on the base 13, and a top cover connected to the side shells. The multiple side shells can be integrally formed, or they can be integrally molded with the top cover. The housing 1 forms an installation space for the filter module 4, heating module 5, cooling module 6, water pump, pipelines, and other structures. The housing 1 is provided with a water outlet 11 for dispensing water for drinking. The water outlet 11 is located on the front side of the housing 1, and there is at least one water outlet 11. In this embodiment, there is one water outlet 11, which can be used to dispense hot water, cold water, and room temperature water, allowing water of three different temperatures to flow out through a single outlet 11, reducing the number of outlets and simplifying the structural design. Of course, in other embodiments, the number of water outlets 11 can also be multiple; there is no specific limitation on this.

[0045] Please see Figure 1 and Figure 6 The raw water tank 2 is detachably installed on the housing 1. Specifically, a water connector is installed on the base 13 of the housing 1. When the raw water tank 2 is installed on the housing 1, the water in the raw water tank 2 is connected to the water system of the water purifier 10 through the water connector. The raw water tank 2 is mainly used to hold raw water (i.e., tap water) and serves as the water source for the water system of the water purifier 10. The purified water tank 3 is detachably installed on the housing 1. Similarly, a corresponding water system structure for the purified water tank 3 is installed on the base 13 of the housing 1 to enable communication between the purified water tank 3 and the water system of the water purifier 10.

[0046] Please see Figure 6 and Figure 7 The filter module 4 is housed within the casing 1, with its inlet side connected to the outlet side of the raw water tank 2, and its outlet side connected to the pure water tank 3. 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] Please see Figure 6 The heating module 5 is located inside the housing 1 and in 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 used to heat the flowing water. When the water in the pure water tank 3 flows through the heating module 5, the room-temperature water in the pure water tank 3 can be heated to high-temperature water for the user to drink. The user can select the temperature of the high-temperature water according to their needs, for example, but not limited to, 45℃, 60℃, 75℃, 80℃, 85℃, 95℃, and 100℃.

[0048] Please see Figure 6 and Figure 9The refrigeration module 6 is housed within the casing 1. The refrigeration module 6 includes a water storage tank 61, within which a water storage cavity 61a is formed. The water storage cavity 61a is connected to the outlet side of the pure water tank 3. Water from the pure water tank 3 can flow through a pipe into the water storage tank 61, and the water in the water storage tank 61 is cooled by the relevant refrigeration structure of the refrigeration module 6. The water storage cavity 61a is also connected to the outlet 11, allowing the cooled water to flow out for drinking by the user. Similarly, the user can select the temperature of the cold water according to their needs, for example, but not limited to, 1℃, 3℃, 5℃, and 8℃.

[0049] Please see Figure 4 It is worth mentioning that the water purifier 10 also has a return pipe (not shown in the figure) inside the shell 1. The return pipe connects the water storage chamber 61a and the filter module 4, allowing water in the water storage tank 61 to flow back to the filter module 4 for filtration. It should be noted that the water in the water storage tank 61 is pumped from the pure water tank 3 into the water storage chamber 61a. This means the water in the water storage chamber 61a has already been filtered by the filter module 4. However, if the water in the water storage chamber 61a is not used for a long time, or during the water purification process of the water purifier 10, the heating module 5 or compressor inside the shell 1 will release heat, causing the insulation or protective layer's molecular materials to evaporate and enter the water through the tank or pipes. This can result in an unpleasant odor and poor water quality and taste. Therefore, the return pipe allows the water in the water storage tank 61 to flow back to the filter module 4 for filtration, improving the water quality and taste.

[0050] The technical solution of this utility model connects the water storage chamber 61a of the water storage tank 61 of the refrigeration module 6 and the filter module 4 through a return pipe, so that the water in the water storage tank 61 can flow back to the filter module 4 for filtration. This eliminates the odor of the water in the water storage tank 61, improves water quality and taste, and enhances the user's water experience.

[0051] Please see Figure 6 and Figure 7 In one embodiment, the filtration 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 outlet side of the post-filter element is connected to the pure water tank 3, and the return pipe is connected to the water storage chamber 61a and the inlet side of the post-filter element.

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

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

[0054] Specifically, the reverse osmosis filter element 42 is located between the pre-filter and the post-filter in the flow path. The pre-filter, also known as a pre-filter, is a filter element installed at the very beginning of the water system. Its main function is to remove large particulate impurities from the water, such as suspended solids, silt, and rust. If these impurities flow directly downstream in the water system, they may damage equipment and shorten its lifespan. Therefore, the pre-filter plays a role in protecting downstream equipment and improving overall water quality. In addition, the pre-filter can also remove some organic matter, residual chlorine, and off-colors and odors, 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 utilizes the principle of reverse osmosis, separating solutes from solvents in the water through the selective retention of a semi-permeable membrane. Specifically, the reverse osmosis filter element 42 can remove impurities such as metal ions, bacteria, viruses, and organic matter from the water, thereby obtaining high-quality drinking water. This filter element has a very thorough filtration effect, effectively improving water quality and safety. Post-filters are typically the final step in a water system, responsible for further removing impurities and odors from the water, improving its taste and purity. While most impurities and contaminants have been removed after treatment by pre-filters and reverse osmosis filters, some minor impurities or odors may still remain. Post-filters, with their sophisticated filtration materials and adsorption capabilities, can further remove these residues, making the water clearer, purer, and better-tasting. Simultaneously, post-filters prevent impurities and contaminants from accumulating in subsequent equipment, thus extending the equipment's lifespan.

[0055] Please see Figure 8 and Figure 11 The filter module 4 has a water channel plate 43 at its end. This water channel plate 43 has multiple water interfaces connecting the inlet and outlet sides of the pre-filter, post-filter, and reverse osmosis filter 42. Specifically, the water channel plate 43 has a pre-filter inlet, a pre-filter outlet, a reverse osmosis filter inlet, a wastewater outlet, and a post-filter outlet. Furthermore, the water storage tank 61 has a first water outlet 611 connected to the water storage chamber 61a. The water channel plate 43 also forms a water flow channel (not shown in the figure) connecting the pure water outlet side of the reverse osmosis filter 42 and the inlet side of the post-filter. The water channel plate 43 also has a return port 431 for connecting a return pipe, and this return port 431 is connected to the water flow channel, allowing the water storage chamber 61a to be connected to the inlet side of the post-filter via the return pipe.

[0056] In one embodiment, the water purifier 10 further 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 return port 431 and the water outlet 11.

[0057] Specifically, the water purifier 10 can also be equipped with a multi-way valve. One of the interfaces 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 return port 431, and the outlet 11. The multi-way valve enables the connection between the water storage chamber 61a and the pure water tank 3, the return port 431, and the outlet 11. This setting can reduce the design of water interface on the water storage tank 61, and the multi-way valve can further rationally plan the routing and layout of the pipes inside the shell 1, optimize the pipe layout, and avoid multiple pipes being directly connected to the water storage chamber 61a through the water interface on the water storage tank 61.

[0058] Furthermore, the multi-way valve is a three-way valve, with two three-way valves. One three-way valve has a first port, a second port, and a third port, while the other three-way valve has a fourth port, a fifth port, and a sixth port. The fourth and third ports are connected, the fifth port is connected to the return port 431, and the sixth port is connected to the outlet 11. Thus, through the design of the two three-way valves, the first port of the first three-way valve is connected to the water storage chamber 61a, the second port is connected to the inlet of the water storage chamber 61a, and the third port is connected to the outlet of the water storage chamber 61a. The inlet refers to the water path through which external water enters the water storage chamber 61a, i.e., the water flowing from the pure water tank 3 to the water storage tank 61a. The outlet refers to the water path through which the water in the water storage tank 61a flows outward, including the water in the water storage chamber 61a flowing back to the post-filter side, and the water in the water storage chamber 61a flowing to the outlet 11 for user use. Since the water outlet includes two outlets, there are two three-way valves. The fourth and third ports of the second three-way valve are connected, the fifth port is connected to the return port 431, and the sixth port is connected to the outlet 11, so as to realize the function of the aforementioned water outlet.

[0059] Please see Figure 8 In one embodiment, the return port 431 is located on the side of the water circuit plate 43. Specifically, the return port 431 is located on the side of the water circuit plate 43 for two reasons. First, since the water circuit plate 43 has a water channel connecting the pure water outlet side of the reverse osmosis filter element 42 and the water inlet side of the post-filter element, placing the return port 431 on the side of the water circuit plate 43 allows for direct communication with the water channel and avoids other water interfaces on the water circuit plate 43, preventing interference. Second, since the return port 431 and the water storage chamber 61a need to be connected by a pipeline, placing the return port 431 on the side of the water circuit plate 43 facilitates the connection of the pipeline and the installation of the connector.

[0060] Please see Figure 7 and Figure 8In one embodiment, the water purifier 10 further includes a return pump 100 disposed on a return pipe, which pumps water from the water storage chamber 61a to the post-filter cartridge for filtration. Specifically, the return pump 100 is disposed in the flow path between the water storage chamber 61a and the inlet side of the post-filter cartridge, i.e., disposed on the return pipe, to pump water from the water storage chamber 61a to the post-filter cartridge for filtration. The type of the return pump 100 may be a diaphragm pump.

[0061] Furthermore, the return port 431 is located on the side of the water circuit board 43 near the return pump 100. This arrangement allows the distance between the return port 431 and the return pump 100 to be closer, which can shorten the length of the pipeline and facilitate the layout and installation of the pipeline.

[0062] Please see Figure 8 In one embodiment, the housing 1 includes a base 13, and the water purifier 10 further 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 mounted on the first bracket 81 and the second bracket 82. Specifically, the first bracket 81 and the second bracket 82 are fixedly mounted on the base 13. The first bracket 81 and the second bracket 82 extend upward and are spaced apart. The first bracket 81 is used to fixally connect to one side of the filter module 4, and the second bracket 82 is used to fixally connect 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 vertical direction, the height of the first bracket 81 is higher than the height of the second bracket 82, and the return pump 100 is mounted on the first bracket 81. Mounting the return pump 100 on the first bracket 81 allows the return pump 100 and the filter module 4 to be closer together, facilitating pipe routing, and also makes better use of the installation space within the housing 1 of the water purifier 10. Here, the vertical direction refers to the vertical direction of the water purifier 10 in use, which can also be understood as the vertical direction.

[0064] Please see Figure 7 and Figure 8 In one embodiment, the water purifier 10 further includes a booster pump 200, which is mounted on the base 13 and located below the filter module 4. Specifically, to make reasonable use of the installation space within the housing 1, the booster pump 200 is mounted on the base 13, located between the first bracket 81 and the second bracket 82, and below the filter module 4, so that the internal structure of the water purifier 10 is compact, achieving miniaturization of the water purifier 10. The booster pump 200 can be a diaphragm pump.

[0065] Please see Figures 5 to 7In one embodiment, the water purifier 10 further includes an ice-making module 7. An ice storage chamber 91 is provided within the water storage tank 61, a water storage cavity 61a is formed below the ice storage chamber 91, and the ice-making module 7 is positioned above the ice storage chamber 91. Specifically, 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. The ice storage chamber 91 is used to store ice blocks made by the ice-making module 7. The ice storage chamber 91 divides the internal space of the water storage tank 61 into upper and lower parts. The lower part of the ice storage chamber 91 is the water storage cavity 61a, and the ice-making module 7 is installed above the ice storage chamber 91. The ice blocks made by the ice-making module 7 can fall directly into the ice storage chamber 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 chamber 91, and the ice storage chamber 91 is provided with an ice dispensing component 92. When the user needs to obtain ice, the ice dispensing component 92 works to move the ice in the ice storage chamber 91 to the ice outlet 12 to dispense ice for the user to use.

[0066] Please see Figure 5 Furthermore, the ice-making module 7 includes an ice maker 71 and an ice container 72, with the ice maker 71 positioned above the ice container 72. The water storage tank 61 is also equipped with a second water inlet 612 and a circulating water inlet 613 connected by a pipeline (see [link to relevant documentation]). Figure 10 The second water outlet 612 is connected to the water storage chamber 61a, and the circulating water inlet 613 is connected to the ice maker 72. A circulating pump 300 is installed between the second water outlet 612 and the circulating water inlet 613. The circulating pump 300 is used to pump water from the water storage chamber 61a to the ice maker 72 for ice making. The circulating pump 300 can be a diaphragm pump.

[0067] Specifically, the ice maker 71 is located above the ice container 72, and at least partially extends into the ice container 72. The water storage tank 61 is provided with a second water outlet 612 and a circulation inlet 613 connected by pipes. The circulation pump 300 can pump water from the water storage chamber 61a sequentially through the second water outlet 612 and the circulation inlet 613 into the ice container 72, so that the water in the ice container 72 and the ice maker 71 interact to make ice. It should be noted that the water pumped into the ice container 72 through the second water outlet 612 and the circulation inlet 613 is running water, that is, the water in the water storage chamber 61a will be continuously pumped into the ice container 72 by the circulation pump 300. In the process of making ice from the water in the ice container 72, the ice maker 71 first cools the water in the ice container 72. Because the water in the water storage chamber 61a continuously flows into the ice maker 72, the low-temperature water in the ice maker 72, after being cooled by the ice maker 71, will overflow and flow back into the water storage chamber 61a through the ice storage compartment 91 or other drainage structures. The water in the water storage chamber 61a and the ice maker 72 is in a dynamic circulation process, and the ice maker 71 simultaneously performs the functions of making ice and cooling the water in the water storage chamber 61a.

[0068] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A water purifier, characterized in that, include: The housing has a water outlet. The raw water tank is detachably installed on the housing; A pure water tank is detachably installed on the housing; A filter module is disposed inside the housing. The inlet side of the filter module is connected to the outlet side of the raw water tank, and the outlet side of the filter module is connected to the pure water tank. A refrigeration module is disposed within the housing; the refrigeration module includes a water storage tank, a water storage cavity is formed within the water storage tank, and the water storage cavity is connected to the outlet side of the pure water tank; as well as A return pipe is provided, with one end connected to the water storage chamber and the other end connected to the filter module. Water in the water storage chamber can flow through the return pipe to the filter module for filtration.

2. The water purifier as described in claim 1, characterized in that, The filtration module includes a composite filter element, which includes a pre-filter element and a post-filter element. The outlet side of the post-filter element is connected to the pure water tank, and the return pipe connects the water storage chamber and the inlet side of the post-filter element.

3. The water purifier as described in claim 2, characterized in that, The filtration module also includes a reverse osmosis filter element. A water channel plate is provided at the end of the filtration module. The water channel plate has a return port. A water channel is formed inside the water channel plate, which connects the pure water outlet side of the reverse osmosis filter element and the water inlet side of the post-filter element. The return port is connected to the water channel. The water storage tank has a first water outlet. The return pipe is connected to the first water outlet and the return port respectively.

4. The water purifier as described in 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 outlet side of the pure water tank, and the third interface is connected to the reflux port and the outlet.

5. The water purifier as described in claim 4, characterized in that, The multi-way valve is a three-way valve, and there are two three-way valves. One of the three-way valves has the first interface, the second interface and the third interface, and the other three-way valve has the fourth interface, the fifth interface and the sixth interface. The fourth interface and the third interface are connected, the fifth interface is connected to the return port, and the sixth interface is connected to the outlet.

6. The water purifier as described in claim 3, characterized in that, The return port is located on the side of the water channel plate.

7. The water purifier as described in claim 6, characterized in that, The water purifier also includes a return pump installed on the return pipe, which pumps water from the water storage chamber to the post-filter for filtration.

8. The water purifier as described in claim 7, characterized in that, The return port is located on the side of the water circuit board near the return pump.

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

10. The water purifier as described in claim 9, characterized in that, In the vertical 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.

11. The water purifier as described in claim 9, characterized in that, The water purifier also includes 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 also includes an ice-making module. An ice storage compartment is provided inside the water storage tank. The water storage cavity is formed below the ice storage compartment, and the ice-making module is located above the ice storage compartment.

13. The water purifier as described in claim 12, characterized in that, The ice-making module includes an ice maker and an ice-making box. The ice maker is positioned above the ice-making box. The water storage tank is also provided with a second water inlet and a circulating water inlet connected by a pipeline. The second water inlet is connected to the water storage chamber, and the circulating water inlet is connected to the ice-making box. A circulating pump is provided between the second water inlet and the circulating water inlet. The circulating pump is used to pump water from the water storage chamber to the ice-making box to make ice.

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