Water purifier

Abstract

The utility model discloses a water purifier which comprises a shell, a refrigeration part, a heat dissipation part and a fan, the refrigeration part, the heat dissipation part and the fan are all arranged in the shell, the heat dissipation part is arranged between the refrigeration part and the fan, a groove part is formed in the heat dissipation part, and the fan is arranged in the groove part; the shell is provided with at least one air inlet and at least one air outlet, the air inlet and the air outlet are located on the same side of the fan, the air outlet corresponds to the position of the fan, and the air inlet corresponds to the position of the heat dissipation piece. According to the water purifier disclosed by the utility model, the influence on other elements in the machine body during heat dissipation can be avoided, and the heat dissipation effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, in particular to a water purifier. Background Art

[0002] As the demand for drinking water becomes more and more diversified, drinking cold water is becoming more and more popular. Therefore, adding refrigeration function to water purification equipment has become a trend. However, due to the location restrictions of water purification equipment, it is generally required to be small enough. Therefore, the use of relatively small electronic ice tanks has become a reasonable choice for water purification equipment. According to the basic characteristics of semiconductor refrigeration, the cooling effect of water purification equipment is directly affected by its heat dissipation effect.

[0003] The air inlet of the existing water purification equipment is directly facing the area of ​​the cooling plate, which will cause heat to enter the rest of the body and affect other components (for example, the whole machine control board, power board), etc. At the same time, the other components will also affect the heat dissipation effect of the radiator. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a water purifier, which can avoid affecting other components in the machine body during heat dissipation and has good heat dissipation effect.

[0005] The utility model is realized by the following technical solutions:

[0006] A water purifier comprises a housing, a refrigeration element, a heat sink and a fan, wherein the refrigeration element, the heat sink and the fan are all arranged in the housing, the heat sink is arranged between the refrigeration element and the fan, a groove is formed on the heat sink, and the fan is arranged in the groove;

[0007] At least one air inlet and an air outlet are arranged on the shell, and the air inlet and the air outlet are located on the same side of the fan, and the air outlet is arranged corresponding to the position of the fan, and the air inlet is arranged corresponding to the position of the heat sink.

[0008] Furthermore, the heat sink includes a plurality of heat sinks arranged at intervals, and air guide grooves are formed between adjacent heat sinks.

[0009] Furthermore, at least one air inlet includes a pair of air inlets, and the pair of air inlets are arranged along the direction of the air guide groove and located on both sides of the air outlet.

[0010] Furthermore, the water purifier also includes a first air guide plate and a second air guide plate, and the first air guide plate and the second air guide plate are respectively located at two ends of the air guide groove.

[0011] Furthermore, at least some of the heat sinks are provided with cutouts, and the cutouts are used for installing the fan.

[0012] Furthermore, the water purifier also includes a protective pad, which is circumferentially arranged on the outer side of the refrigeration component.

[0013] Furthermore, the water purifier also includes an ice water tank and a refrigeration block, the refrigeration block is integrally formed and includes a main body and a fin portion connected to the main body, a mounting groove is provided on the side wall of the ice water tank, a mounting hole is provided on the bottom wall forming the mounting groove, the main body is installed in the mounting groove and connected to the refrigeration component, and the fin portion passes through the mounting hole and is located inside the ice water tank.

[0014] Furthermore, the water purifier also includes a heat-insulating component, which is wrapped around the outside of the ice water tank.

[0015] Furthermore, a through hole is formed at a position of the heat-insulating component corresponding to the refrigeration block, and the protective pad is arranged in the through hole.

[0016] Furthermore, the water purifier also includes a seal, and the seal is arranged between the refrigeration block and the shell.

[0017] Furthermore, the water purifier also includes a float, a low water level sensor and a high water level sensor. The float is arranged in the ice water tank, and the low water level sensor and the high water level sensor are both arranged on the ice water tank for detecting the position of the float.

[0018] Furthermore, a slide rail is provided in the ice water box, a slide groove is provided on the slide rail, and the float is accommodated in the slide groove and can move up and down along the direction of the slide groove.

[0019] Furthermore, the water purifier also includes a clean water tank, a first pump, a first switching valve, a second pump and a water outlet. The clean water tank, the first pump and the first switching valve are connected in sequence to form a water supply circuit. The ice water tank, the second pump and the water outlet are connected in sequence to form a refrigeration water circuit. The water supply circuit and the refrigeration water circuit are connected to each other to form a first water circuit.

[0020] Furthermore, the water purifier also includes a heating pipe, a second switching valve and a tea outlet. The clean water tank, the first pump, the first switching valve, the heating pipe, the second switching valve and the tea outlet constitute a second water circuit; the clean water tank, the first pump, the first switching valve, the heating pipe, the second switching valve and the water outlet constitute a third water circuit; the refrigeration water circuit in the first water circuit and the third water circuit constitute a fourth water circuit.

[0021] Furthermore, a plurality of heat sinks wrap the fan in a "C-shape".

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] By setting the air inlet and the air outlet on the same side of the fan, and the fan is set at the position corresponding to the air outlet, and the air inlet is set at the position corresponding to the heat sink, the fan can suck the cold air outside the shell into the shell through the air inlet during rotation and reach the heat sink. The cold air flows and takes away the heat on the heat sink to form hot air, and the fan discharges the generated hot air out of the shell through the air outlet. This heat dissipation structure has a good heat dissipation effect and can prevent the hot air generated by the heat sink from remaining in the machine and affecting other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a water purifier;

[0025] Figure 2 This is the left view of the water purifier;

[0026] Figure 3 It is a partial structural schematic diagram of a water purifier;

[0027] Figure 4 It is a schematic diagram of the local structure of the water purifier;

[0028] Figure 5 This is the exploded diagram of the local structure of the water purifier;

[0029] Figure 6 Schematic diagram of the local structure of the water purifier Figure 1 ;

[0030] Figure 7 The local structure of the water purifier exploded Figure 1 ;

[0031] Figure 8 This is a partial structural front view of the water purifier;

[0032] Fig. 9 for Figure 8 Sectional view along AA;

[0033] Fig.10 is a schematic diagram of the structure of the heat sink;

[0034] Fig.11 This is the piping schematic of the water purifier.

[0035] 1. Shell; 10. Air inlet; 11. Air outlet; 12. Display screen; 2. Refrigeration component; 3. Heat dissipation component; 30. Groove; 31. Heat sink; 32. Air guide groove; 33. Break; 4. Fan; 5. First air guide plate; 6. Second air guide plate; 7. Protective pad; 8. Insulation component; 80. Through hole; 9. Sealing component; 20. Float; 21. Low water level sensor; 22. High water level sensor; 300. Ice water tank; 304. Side wall; 305. Mounting groove; 306. Mounting hole; 307. Slide rail; 308. Slide groove; 301. Refrigeration block; 302. Main body; 303. Fin part; 100. Water machine body; 101. Filter component; 102. Raw water tank; 103. Booster pump ; 104, flushing solenoid valve; 105, polypropylene activated carbon composite filter element; 106, reverse osmosis membrane filter element; 107, activated carbon water purification composite filter element; 200, water purification tank; 400, first pump; 500, first switching valve; 501, first water inlet; 502, first drain outlet; 503, second drain outlet; 600, heating pipe; 700, second switching valve; 701, first inlet; 702, first drain outlet; 703, second drain outlet; 704, tea outlet; 705, water outlet; 800, second pump; 900, fixing frame; 910, tea cup making; 911, tea water outlet; 950, first exhaust pipeline; 951, second exhaust pipeline; 952, third exhaust pipeline. DETAILED DESCRIPTION

[0036] The following is a further non-restrictive detailed description of the utility model technical solution in conjunction with the preferred embodiment and its accompanying drawings. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limitations on the utility model.

[0037] like Figure 1-Figure 11As shown, a water purifier according to an embodiment of the utility model includes a water purifier body 100, a clean water tank 200, an ice water tank 300, a first pump 400, a first switching valve 500, a heating pipe 600, a second switching valve 700 and a second pump 800. The water purifier body 100 is connected to the clean water tank 200 to provide clean water for the clean water tank 200. The second switching valve 700 includes a first inlet 701, a first outlet 702 and a second outlet 703, wherein the first outlet 702 It is connected to a tea outlet 704, and the second outlet 703 is connected to a water outlet 705; the first switching valve 500 includes a first water inlet 501, a first drain outlet 502 and a second drain outlet 503, the first water inlet 501 is connected to the first pump 400 and the clean water tank 200 in sequence, the first drain outlet 502 is connected to the heating pipe 600 in sequence, and the first inlet 701 of the second switching valve 700; the second drain outlet 503 is connected to the ice water tank 300, the second pump 800 and the water outlet 705 in sequence.

[0038] like Fig.11 As shown, the water purifier body 100 includes a raw water tank 102, a filter component 101, a boost pump 103 and a flushing solenoid valve 104. The boost pump 103 is connected between the raw water tank 102 and the filter component 101. The water outlet of the filter component 101 is connected to the clean water tank 200. The concentrated water outlet of the filter component 101 is connected to the raw water tank 102 through the flushing solenoid valve 104.

[0039] like Fig.11 As shown, the filter component 101 includes a polypropylene activated carbon composite filter element 105, a reverse osmosis membrane filter element 106 and an activated carbon water purification composite filter element 107. The raw water in the raw water tank 102 is filtered in turn through the polypropylene activated carbon composite filter element 105, the reverse osmosis membrane filter element 106 and the activated carbon water purification composite filter element 107 under the action of the booster pump 103, and the filtered clean water is transported to the clean water tank 200.

[0040] like Figure 3 As shown, the clean water tank 200 and the ice water tank 300 are both arranged on the water purifier body 100 and the ice water tank 300 is arranged corresponding to the clean water tank 200 in the height direction.

[0041] The water purifier further includes a fixing frame 900 disposed on the water purifier body 100, a first pump 400, a first switching valve 500, a heating pipe 600, a second switching valve 700, and a second pump 800 are integrated and arranged inside the fixing frame 900, and a clean water tank 200 and an ice water tank 300 are radially arranged above the fixing frame 900. The water purifier is highly integrated, and has a compact structure, a small volume, and is easy to assemble.

[0042] Specifically, the first pump 400 is arranged below the clean water tank 200, the second pump 800 is located below the ice water tank 300, and the first pump 400 is arranged corresponding to the second pump 800 in the height direction. The heating pipe 600 is vertically arranged below the ice water tank 300 and located behind the second pump 800. In addition, the first switching valve 500 and the second switching valve 700 are located between the first pump 400 and the second pump 800.

[0043] like Fig.11 In the present embodiment, the water purifier includes a first water circuit, which includes a water supply circuit and a cooling circuit connected to each other, wherein the water purification tank 200, the first pump 400, and the first switching valve 500 constitute the water supply circuit, the ice water tank 300, the second pump 800, and the water outlet 705 constitute the cooling circuit, and the ice water tank 300 is connected to the second drain outlet 503 of the first switching valve 500. When the ice water tank 300 turns on the cooling function, the first water circuit can discharge ice water, and the ice water temperature is 6-12 degrees; when the ice water tank 300 does not turn on the cooling function, the first water circuit can discharge normal temperature water. Since people generally need ice water in the hot summer, the role of the ice water tank in other seasons is not so prominent, so when the ice water tank 300 does not turn on the ice water making state, the ice water tank 300 can also be used as a normal temperature water intake, which not only ensures that the water inside the ice water tank can flow when it is not used for a long time, but also increases the capacity of the water purification tank 200.

[0044] In addition, the refrigeration water circuit is composed only of the ice water tank 300, the second pump 800 and the water outlet 705. The ice water comes out of the ice water tank 300 and directly enters the water outlet 705 through the second pump 800. In this state, the ice water will not pass through other water circuits of the entire machine. The path from the ice water to the water outlet 705 is simple, avoiding energy loss and the influence of other components on the ice water.

[0045] In this embodiment, the water purifier also includes a second water circuit, and the water tank 200, the first pump 400, the first switching valve 500, the heating pipe 600, the second switching valve 700 and the tea outlet 704 constitute the second water circuit. The water purifier also includes a tea making cup 910. The tea making cup 910 is fixedly arranged on the outside of the water purifier body 100 and is located on the left side of the water outlet 705. There is also a space reserved below the tea cup 910 for water. A tea outlet 911 is arranged on the tea making cup 910, wherein the tea outlet 704 is connected to the tea making cup 910. Under the action of the heating pipe 600, the tea outlet 704 of the second water circuit can discharge hot water of a set temperature, and the hot water directly enters the tea making cup 910. Tea leaves and other tea materials can be put into the tea making cup 910, and the user can directly release the prepared tea at the tea outlet 911.

[0046] In this embodiment, the water purifier further includes a display screen 12. The display screen 12 is fixedly arranged above the water outlet 705 and is used to display operation prompts related to the water dispenser.

[0047] In this embodiment, the water purifier further includes a third water path, and the water tank 200, the first pump 400, the first switching valve 500, the heating pipe 600, the second switching valve 700 and the water outlet 705 constitute the third water path. When the heating pipe 600 turns on the heating function, the third water path can discharge hot water, and the hot water temperature can be set; when the heating pipe 600 does not turn on the heating function, the third water path can discharge water at room temperature.

[0048] In this embodiment, the water purifier further includes a fourth water circuit, which is composed of the refrigeration water circuit in the first water circuit and the third water circuit, so that the ice water in the ice water tank 300 is mixed with the water in the clean water tank 200 to form cold water. In this embodiment, the cold water temperature is 12-18 degrees. In this embodiment, temperature sensors are provided in the clean water tank 200 and the ice water tank 300, and the cold water of the temperature required by the user, the current water temperature in the clean water tank 200, and the water temperature in the ice water tank 30 are mixed and discharged.

[0049] In order to prevent bacteria problems caused by the water not flowing inside the machine for a long time when the user does not use the machine for a long time, the machine has added a "three-day non-use prompt for drainage operation". This action allows the user to switch the first switching valve 500 to the second drain port 503 to discharge water, so that the water in the clean water tank 200 is discharged into the ice water tank 300 in turn, and then turn on the second pump 800 to discharge the water in the first water circuit; after there is no residual water in the ice water tank 300 and the clean water tank 200, switch the first switching valve 500 to the first drain port 502 to discharge water, and finally switch the second switching valve 700 to the first discharge port 702 and the second discharge port 703 in turn to discharge water, and discharge the remaining water in the pipes of the second water circuit and the third water circuit. This process can realize the self-cleaning function of the entire water circuit, and basically realize the discharge of water that has not flowed for a long time in the whole machine.

[0050] In this embodiment, the water purifier further includes a first exhaust pipeline 950, a second exhaust pipeline 951 and a third exhaust pipeline 952. The ice water tank 300 is connected to the clean water tank 200 through the first exhaust pipeline 950, the tea outlet 704 is connected to the clean water tank 200 through the second exhaust pipeline 951, and the water outlet 705 is connected to the clean water tank 200 through the third exhaust pipeline 952. Since water vapor is easily generated during the heating or cooling process, multiple exhaust pipelines are added to discharge the water vapor to avoid excessive pressure in the pipeline.

[0051] In this embodiment, the water purifier also includes a shell 1, and the clean water tank 200, the ice water tank 300, the first pump 400, the first switching valve 500, the heating pipe 600, the second switching valve 700, the second pump 800 and the fixing bracket 900 are all arranged inside the shell 1.

[0052] The water purifier further includes a refrigeration component, which provides a refrigeration function for the ice water tank 300 .

[0053] like Figure 5 As shown, the refrigeration assembly includes a refrigeration element 2, which can refrigerate the water in the ice water tank 300 to ensure that the water in the ice water tank 300 is always kept at a relatively stable temperature value or temperature range. The refrigeration element 2 can be a semiconductor refrigeration sheet with a compact structure and small space occupation, and can ensure continuous and reliable refrigeration effect. When the water temperature in the ice water tank 300 reaches the set temperature, the refrigeration element 2 can change from high-power refrigeration to low-power heat preservation refrigeration.

[0054] The refrigeration assembly also includes a refrigeration block 301, which is integrally formed and includes a main body 302 and a fin part 303 connected to the main body 302. A mounting groove 305 is provided on the side wall 304 of the ice water tank 300, and a mounting hole 306 is provided on the bottom wall forming the mounting groove 305. The main body 302 is installed in the mounting groove 305 and connected to the refrigeration element 2 through thermal conductive silicone grease, and the fin part 303 passes through the mounting hole 306 and is located inside the ice water tank 300. The cold end of the refrigeration element 2 contacts the refrigeration block 301 so that the low temperature generated by the cold end of the refrigeration element 2 is transferred to the inside of the ice water tank 300 through the refrigeration block 301.

[0055] The water purifier further includes a heat sink 3 and a fan 4. The cooling element 2, the heat sink 3 and the fan 4 are all arranged in the housing 1, wherein the heat sink 3 is arranged between the cooling element 2 and the fan 4. Specifically, the heat sink 3 is in contact with the hot end of the cooling element 2, so that the high temperature generated by the hot end of the cooling element 2 is transferred to the heat sink 3, and the fan 4 is used to discharge the heat on the heat sink 3 out of the housing 1, thereby improving the heat dissipation efficiency.

[0056] like Fig.10 As shown, a groove 30 is formed on the heat sink 3, and the fan 4 is installed in the groove 30 by screws. Specifically, the heat sink 3 includes a plurality of heat sinks 31 arranged at intervals, and at least some of the heat sinks 31 are provided with a cutout 33 for installing the fan 4. The groove 30 is formed by the cutouts 33 on the plurality of heat sinks 31.

[0057] Air guide grooves 32 are formed between adjacent heat sinks 31 , and the cold air entering the housing 1 flows along the direction of the air guide grooves 32 .

[0058] like Figure 2As shown, at least one air inlet 10 and an air outlet 11 are provided on the housing 1. The air inlet 10 and the air outlet 11 are located on the same side of the fan 4, and the air outlet 11 is arranged corresponding to the position of the fan 4, and the air inlet 10 is arranged corresponding to the position of the heat sink 3. In this embodiment, the at least one air inlet 10 includes a pair of air inlets 10, and the pair of air inlets 10 are arranged along the direction of the air guide groove 32 and are located on both sides of the air outlet 11. During the rotation process, the fan 4 can suck the cold air outside the housing 1 into the housing 1 through the air inlet 10 and reach the heat sink 3. The cold air flows along the direction of the air guide groove 32 of the heat sink 3 and takes away the heat on the heat sink 3 to form hot air. The multiple heat sinks 31 with fractures 33 on the heat sink 3 are "C-shaped" and completely wrap the fan 4. The fan 4 directly discharges the generated hot air outside the housing 1 through the air outlet 11. Compared with the solution of setting the air inlet 10 corresponding to the position of the fan 4, this solution can further ensure the heat dissipation effect and avoid the heat generated by the refrigeration plate from accumulating inside the machine and affecting the operation of other internal components.

[0059] like Figure 3 As shown, the water purifier also includes a first air guide plate 5 and a second air guide plate 6, which are respectively located at the two ends of the air guide groove 32. By arranging the first air guide plate 5 and the second air guide plate 6, the cold air at the two air inlets 10 can be guided directly into the air guide groove 32 of the heat sink 31.

[0060] like Figure 5 and Fig. 9 As shown, the water purifier further includes a protective pad 7 , which is circumferentially arranged on the outer side of the refrigeration component 2 .

[0061] like Figure 5 and Fig. 9 As shown, the water purifier further includes a heat preservation member 8 , which is wrapped around the outside of the ice water tank 300 , and a through hole 80 is opened at a position of the heat preservation member 8 corresponding to the refrigeration block 301 , and the protective pad 7 is arranged in the through hole 80 .

[0062] like Figure 5 and Fig. 9 As shown, the water purifier further includes a seal 9 , which is disposed between the refrigeration block 201 and the housing 1 .

[0063] like Figure 7 and Fig. 9 As shown, the water purifier further includes a float 20 , a low water level sensor 21 and a high water level sensor 22 . The float 20 is disposed in the ice water tank 300 . The low water level sensor 21 and the high water level sensor 22 are both disposed on the ice water tank 300 for detecting the position of the float 20 .

[0064] A slide rail 307 is provided in the ice water tank 300 , and a slide groove 308 is provided on the slide rail 307 . The float 20 is accommodated in the slide groove 308 and can move up and down along the direction of the slide groove 308 .

[0065] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A water purifier, comprising a housing (1), a refrigeration element (2), a heat dissipation element (3) and a fan (4), wherein the refrigeration element (2), the heat dissipation element (3) and the fan (4) are all arranged in the housing (1), and the heat dissipation element (3) is arranged between the refrigeration element (2) and the fan (4), characterized in that: The heat sink (3) is provided with a groove (30), and the fan (4) is arranged in the groove (30); At least one air inlet (10) and an air outlet (11) are provided on the housing (1); the air inlet (10) and the air outlet (11) are located on the same side of the fan (4); the air outlet (11) is arranged corresponding to the position of the fan (4), and the air inlet (10) is arranged corresponding to the position of the heat sink (3).

2. The water purifier according to claim 1, characterized in that: The heat sink (3) comprises a plurality of heat sinks (31) arranged at intervals, and air guide grooves (32) are formed between adjacent heat sinks (31).

3. The water purifier according to claim 2, characterized in that: The at least one air inlet (10) comprises a pair of air inlets (10), wherein the pair of air inlets (10) are arranged along the direction of the air guide groove (32) and are located on both sides of the air outlet (11).

4. The water purifier according to claim 2, characterized in that: The water purifier further comprises a first air guide plate (5) and a second air guide plate (6), wherein the first air guide plate (5) and the second air guide plate (6) are respectively located at two ends of the air guide groove (32).

5. The water purifier according to claim 1, characterized in that: At least some of the heat sinks (31) among the plurality of heat sinks (31) are provided with a break (33), and the break (33) is used for installing the fan (4).

6. The water purifier according to claim 1, characterized in that: The water purifier further comprises a protective pad (7), wherein the protective pad (7) is circumferentially arranged on the outer periphery of the side edge of the refrigeration component (2).

7. The water purifier according to claim 6, characterized in that: The water purifier further comprises an ice water tank (300) and a refrigeration block (301); the refrigeration block (301) is integrally formed and comprises a main body (302) and a fin portion (303) connected to the main body (302); a mounting groove (305) is provided on a side wall (304) of the ice water tank (300); a mounting hole (306) is provided on a bottom wall forming the mounting groove (305); the main body (302) is installed in the mounting groove (305) and connected to the refrigeration component (2); and the fin portion (303) passes through the mounting hole (306) and is located inside the ice water tank (300).

8. The water purifier according to claim 7, characterized in that: The water purifier further comprises a heat-insulating component (8), wherein the heat-insulating component (8) is wrapped around the outside of the ice water tank (300).

9. The water purifier according to claim 8, characterized in that: The heat-insulating component (8) is provided with a through hole (80) at a position corresponding to the refrigeration block (301), and the protective pad (7) is arranged in the through hole (80).

10. The water purifier according to claim 7, characterized in that: The water purifier further comprises a sealing member (9), wherein the sealing member (9) is arranged between the refrigeration block (301) and the housing (1).

11. The water purifier according to claim 7, characterized in that: The water purifier further comprises a float (20), a low water level sensor (21) and a high water level sensor (22); the float (20) is arranged in the ice water tank (300); and the low water level sensor (21) and the high water level sensor (22) are both arranged on the ice water tank (300) for detecting the position of the float (20).

12. The water purifier according to claim 11, characterized in that: A slide rail (307) is provided in the ice water box (300), a slide groove (308) is provided on the slide rail (307), and the float (20) is accommodated in the slide groove (308) and can move up and down along the direction of the slide groove (308).

13. The water purifier according to claim 7, characterized in that: The water purifier further comprises a clean water tank (200), a first pump (400), a first switching valve (500), a second pump (800) and a water outlet (705); the clean water tank (200), the first pump (400) and the first switching valve (500) are connected in sequence to form a water supply circuit; the ice water tank (300), the second pump (800) and the water outlet (705) are connected in sequence to form a refrigeration circuit; the water supply circuit and the refrigeration circuit are connected to each other to form a first water circuit.

14. The water purifier according to claim 13, characterized in that: The water purifier further comprises a heating pipe (600), a second switching valve (700) and a tea outlet (704); the water purification tank (200), the first pump (400), the first switching valve (500), the heating pipe (600), the second switching valve (700) and the tea outlet (704) constitute a second water circuit; the water purification tank (200), the first pump (400), the first switching valve (500), the heating pipe (600), the second switching valve (700) and the water outlet (705) constitute a third water circuit; and the cooling water circuit in the first water circuit and the third water circuit constitute a fourth water circuit.

15. The water purifier according to claim 5, characterized in that: A plurality of heat sinks (31) are arranged in a "C" shape and wrap around the fan (4).

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