Energy-saving air cooler

Abstract

The energy-saving air cooler comprises a shell, filter elements and a wet curtain, the filter elements are arranged at the positions, close to the side faces, in the shell, the tops of the filter elements extend out of the top end of the shell, the filter elements and the shell are detachably connected, a fan is arranged in the middle of the bottom end of the shell, and a water tank is installed at the top end of the shell. The water tank and the shell are detachably connected, the wet curtain is installed at the bottom of the water tank and is in threaded connection with the water tank, the bottom end of the wet curtain abuts against the bottom of the inner side of the shell, and the air suction end of the fan is arranged on the inner side of the wet curtain. The filter elements are arranged on the inner side faces of the shell, the filter elements can filter air entering the shell, the situation that too much dust causes too fast smudginess of the wet curtain is avoided, meanwhile, the wet curtain is installed above the draught fan and can effectively cool the air, the water tank is in threaded connection with the wet curtain, fast disassembly and assembly of the wet curtain are facilitated, and the use effect is good. And the filter element is detachably connected with the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an energy-saving cooling fan. Background Art

[0002] Air coolers are usually used in production workshops. They rely on internal wet curtains to cool the passing air and then blow out cold air at a lower temperature. The patent with Chinese patent authorization announcement number CN218763765U discloses an energy-saving cold air fan, including a shell, an air inlet and an air outlet opened on the shell, and a fan rotatably connected to the inner side of the shell, the lower end of the fan is fixedly connected to a rotating shaft, the lower end of the rotating shaft is fixedly connected to a motor, the rotating shaft is connected to a connecting shaft, the rotating shaft can drive the connecting shaft to rotate, the connecting shaft is rotatably connected to the inner side of the shell, one end of a rotating rod is fixedly connected to the connecting shaft, the other end of the rotating rod is fixedly connected to a sliding shaft, a sliding frame is slidably connected to the outer side of the sliding shaft, a connecting rod is fixedly connected to the lower end of the sliding frame, a piston rod is connected to the lower end of the connecting rod, a water pumping bucket is slidably connected to the outer side of the piston rod, the water pumping bucket is fixedly connected to the inner side of the shell, a water inlet pipe is fixedly connected to the lower end of the water pumping bucket, a first one-way valve is installed on the water inlet pipe, a water spraying pipe is fixedly connected to the outer side of the water pumping bucket, a second one-way valve is installed on the water spraying pipe, a nozzle is fixedly connected to the water spraying pipe, and a wet curtain paper installed on the inner side of the shell is provided on the air inlet. Only one driving mechanism is needed for energy saving and environmental protection.

[0003] The energy-saving air cooler provided by the above patent can effectively spray water onto the wet curtain, but the air cooler with this structure cannot be quickly disassembled and assembled, whether it is the wet curtain or the filter. This makes it difficult to replace the filter and the wet curtain after they are dirty. The air cooler needs to be stopped for a long time before the filter and the wet curtain can be replaced, which is not conducive to the continuous operation of the air cooler. Utility Model Content

[0004] The utility model aims to provide an energy-saving air cooler, aiming to improve the problem that the wet curtain and filter of the existing energy-saving air cooler cannot be quickly disassembled and assembled, resulting in the filter and wet curtain being difficult to replace after they are dirty. The air cooler needs to be stopped for a long time before the filter and wet curtain can be replaced, which is not conducive to the continuous operation of the air cooler.

[0005] The utility model is achieved in this way:

[0006] An energy-saving air cooler comprises a shell, a filter element and a wet curtain, wherein filter elements are arranged near the sides of the shell, the top of the filter element protrudes out of the top of the shell, the filter element and the shell are detachably connected, and a fan is arranged in the middle of the bottom end of the shell, a water tank is installed at the top of the shell, the water tank and the shell are detachably connected, the wet curtain is installed at the bottom of the water tank, the wet curtain and the water tank are threadedly connected, and the bottom end of the wet curtain abuts against the bottom inside the shell, and the suction end of the fan is arranged on the inner side of the wet curtain.

[0007] Preferably, the side surfaces of the shell are all opened, and the side openings of the shell are evenly provided with multiple grille plates from top to bottom, the top of the shell is provided with plug interfaces near the edge, the inner side of the shell is provided with card slots aligned with the middle of both sides of the plug, a threaded mounting hole is provided in the middle of the top of the shell, the water tank is threadedly connected to the threaded mounting hole, and the bottom of the shell is provided with an exhaust hole, and the fan is installed on the inner side of the exhaust hole.

[0008] Preferably, a frame is provided on the edge of the filter element, clamping rods are symmetrically provided on both sides of the frame, and a groove is provided in the middle of the top of the frame.

[0009] Preferably, a threaded plate is provided at the bottom end of the water tank, a twisting handle is provided on the upper surface of the water tank, a connecting pipe is provided at the edge of the upper surface of the water tank, and a connecting cap is provided at the top of the connecting pipe; an annular mounting groove is provided at the bottom edge of the threaded plate, and a plurality of leakage holes are evenly provided at the top of the mounting groove.

[0010] Preferably, positioning rings are provided at the top and bottom of the wet curtain, and a connecting ring is provided on the upper surface of the positioning ring at the top of the wet curtain, a buffer groove is provided in the middle of the connecting ring, and a hole communicating with the wet curtain is provided at the bottom of the buffer groove.

[0011] Preferably, a threaded hole is provided on the top edge of the water tank, and a liquid level sensor is provided in the threaded hole.

[0012] Preferably, an adapter plate is provided at the bottom end of the liquid level sensor, and a sensor probe is provided at the bottom of the adapter plate, the bottom end of the sensor probe is arranged close to the bottom end of the inner side of the water tank, and a wire is provided on the side of the adapter plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with filter elements on the inner side of the shell, which can filter the air entering the shell to prevent excessive dust from causing the wet curtain to become dirty too quickly. At the same time, a wet curtain is installed above the fan, which can effectively cool the air. The water tank and the wet curtain are threadedly connected, which is convenient for the quick disassembly and assembly of the wet curtain. At the same time, the filter element is disassembled and connected to the shell, and the filter element can be directly pulled out and replaced from the top of the shell. This method greatly facilitates the quick disassembly and assembly and replacement of the wet curtain and the filter element, thereby greatly reducing the time for replacing the wet curtain and the filter element, making the air cooler downtime shorter or not stopping, ensuring that the air cooler can work continuously.

[0015] 2. The utility model is provided with a water tank, and a liquid level sensor is installed on the top of the water tank. The liquid level inside the water tank can be sensed by the liquid level sensor, so that water can be replenished in time after the water tank is short of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the housing of the utility model at the front oblique downward angle;

[0018] Figure 3 It is a schematic diagram of the structure of the housing of the utility model at the front oblique upward viewing angle;

[0019] Figure 4 It is a structural schematic diagram of the filter element of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the water tank of the utility model from the oblique downward angle of the front end;

[0021] Figure 6 It is a schematic diagram of the structure of the water tank of the utility model at the front oblique upward viewing angle;

[0022] Figure 7 It is a structural schematic diagram of the utility model wet curtain;

[0023] Figure 8 It is a structural schematic diagram of the liquid level sensor of the utility model.

[0024] In the figure: 1. Shell; 11. Grille plate; 12. Plug interface; 13. Slot; 14. Threaded mounting hole; 15. Exhaust hole; 16. Fan; 2. Filter element; 21. Frame; 22. Clamp rod; 23. Groove; 3. Water tank; 31. Threaded plate; 32. Threaded hole; 33. Twist handle; 34. Connecting pipe; 35. Connecting cap; 36. Mounting slot; 37. Leakage hole; 4. Wet curtain; 41. Connecting ring; 42. Positioning ring; 43. Buffer tank; 5. Liquid level sensor; 51. Adapter plate; 52. Sensor probe; 53. Wire. DETAILED DESCRIPTION

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0027] Example 1

[0028] like Figure 1 and Figure 3 As shown, an energy-saving air cooler includes a housing 1, a filter element 2 and a wet curtain 4. The filter element 2 is provided near the side of the housing 1. The housing 1 is used to install various components of the air cooler 16. The filter element 2 is conveniently installed inside the housing 1 to filter the air entering the housing 1. The top of the filter element 2 protrudes from the top of the housing 1, and the filter element 2 and the housing 1 are detachably connected. This structure is convenient for the filter element 2 to be removed from the top of the housing 1, thereby facilitating the replacement or cleaning of the filter element 2. A fan 16 is provided in the middle of the bottom end of the housing 1. The fan 16 is convenient for driving the airflow, thereby facilitating the cooling or ventilation of the designated air. A water tank 3 is installed at the top of the housing 1, and the water tank 3 and the housing 1 are detachably connected. The water tank 3 of this structure is convenient for the disassembly and maintenance of the water tank 3, and also convenient for the disassembly and assembly of the wet curtain 4. The wet curtain 4 is installed at the bottom of the water tank 3, the wet curtain 4 and the water tank 3 are threadedly connected, and the bottom end of the wet curtain 4 is against the bottom inner side of the outer shell 1, and the suction end of the fan 16 is arranged on the inner side of the wet curtain 4. This structure ensures that the gas pumped by the fan 16 can pass through the wet curtain 4 smoothly. At the same time, the wet curtain 4 is threadedly connected to the vertical bottom surface, so that the wet curtain 4 can be flexibly disassembled and assembled, which is convenient for the wet curtain 4 to be quickly replaced or cleaned according to usage requirements.

[0029] like Figure 2 and Figure 3 As shown, the side of the shell 1 is opened, and the side opening of the shell 1 is evenly provided with multiple grille plates 11 from top to bottom. The grille plates 11 are convenient for the external air to pass through the shell 1 smoothly into the interior thereof, ensuring that the fan 16 can drive the airflow. The top of the shell 1 is provided with a plug-in port 12 near the edge. The plug-in port 12 is convenient for installing the filter element 2, facilitating the disassembly and assembly of the filter element 2, and facilitating the flexible disassembly and assembly and use of the filter element 2. The inner side of the shell 1 is aligned with the middle of both sides of the socket and is provided with a card slot 13. The card slot 13 is convenient for installing the filter element 2, ensuring that the filter element 2 is stable inside the socket. The middle of the top of the shell 1 is provided with a threaded mounting hole 14, and the water tank 3 is threadedly connected with the threaded mounting hole 14. The threaded mounting hole 14 is convenient for installing the water tank 3, facilitating the stability of the water tank 3 on the top of the shell 1, and also facilitating the flexible disassembly and assembly and use of the water tank 3. The bottom of the shell 1 is provided with an air extraction hole 15, and the fan 16 is installed inside the air extraction hole 15. The air extraction hole 15 is convenient for cooperating with the fan 16 to drive the airflow.

[0030] like Figure 4 As shown, the edge of the filter element 2 is provided with a frame 21, and the frame 21 is used to ensure that the overall shape of the filter element 2 is sufficiently stable. Clamping rods 22 are symmetrically provided on both sides of the frame 21, and the clamping rods 22 are used to facilitate the clamping of the filter element 2 in the socket, ensuring that the filter element 2 is stable inside the socket. A pull groove 23 is provided in the middle of the top of the frame 21, and the pull groove 23 is used to facilitate the disassembly and assembly of the filter element 2, and to facilitate the replacement or cleaning of the filter element 2.

[0031] like Figure 5 and Figure 6As shown, a threaded plate 31 is provided at the bottom of the water tank 3, and the threaded plate 31 is convenient for the water tank 3 to be threadedly connected to the top of the housing 1. A screw handle 33 is provided on the upper surface of the water tank 3, and screwing the handle 33 facilitates the disassembly and assembly of the water tank 3, and is convenient for the use of the water tank 3. A connecting pipe 34 is provided on the edge of the upper surface of the water tank 3, and a connecting cap 35 is provided on the top of the connecting pipe 34; the connecting pipe 34 and the connecting cap 35 are used to connect with an external water pipe to ensure that the water pipe supplies water to the inside of the water tank 3. An annular mounting groove 36 is provided on the bottom edge of the threaded plate 31, and the mounting groove 36 is convenient for matching with the wet curtain 4, ensuring that the wet curtain 4 is stably connected to the mounting groove 36; a plurality of water leakage holes 37 are evenly provided on the top of the mounting groove 36, and the water leakage holes 37 are convenient for water to penetrate the water tank 3 and soak the wet curtain 4, ensuring that the wet curtain 4 is in a wet state for a long time.

[0032] like Figure 7 As shown, the top and bottom of the wet curtain 4 are both provided with positioning rings 42, which are used to ensure that the wet curtain 4 is sufficiently stable. A connecting ring 41 is provided on the upper surface of the positioning ring 42 at the top of the wet curtain 4, and the connecting ring 41 is convenient for the wet curtain 4 to be stably threadedly connected to the water tank 3. A buffer groove 43 is provided in the middle of the connecting ring 41, and a hole communicating with the wet curtain 4 is provided at the bottom of the buffer groove 43; the buffer groove 43 is convenient for water flow to enter the top of the wet curtain 4, and the water flow passes through the top of the wet curtain 4 to soak the wet curtain 4.

[0033] Working principle: When in use, the entire fan 16 is stably installed in the designated position, and the fan 16 is connected to the air duct, and then the fan 16 can be operated to work normally. During this period, the water inside the water tank 3 will continuously supply the wet curtain 4 through the water leakage hole 37, so that the wet curtain 4 is in a wet state, ensuring the normal use of the wet curtain 4. When the filter element 2 needs to be replaced or cleaned, it is only necessary to remove the filter element 2 through the pull groove 23 for replacement or cleaning. The operation is simple and convenient. When the wet curtain 4 needs to be replaced, it is only necessary to twist the water tank 3, bring the wet curtain 4 out through the water tank 3, and then remove the wet curtain 4 from the bottom of the water tank 3 and replace the wet curtain 4. The operation is simple and convenient, and it is convenient to use the wet curtain 4. Compared with the prior art, the present application provides a filter element 2 on the inner side of the shell 1, and the filter element 2 can filter the air entering the shell 1 to prevent excessive dust from causing the wet curtain 4 to become dirty too quickly. At the same time, a wet curtain 4 is installed above the fan 16, and the wet curtain 4 can effectively cool the air. The water tank 3 and the wet curtain 4 are threadedly connected, which is convenient for the quick disassembly and assembly of the wet curtain 4. At the same time, the filter element 2 is detachably connected to the shell 1, and the filter element 2 can be directly pulled out and replaced from the top of the shell 1. This method greatly facilitates the quick disassembly and assembly and replacement of the wet curtain 4 and the filter element 2, thereby greatly reducing the time for replacing the wet curtain 4 and the filter element 2, so that the downtime of the air cooler 16 is shorter or does not stop, ensuring that the air cooler 16 can work continuously.

[0034] Example 2

[0035] like Figure 1 and Figure 3 As shown, an energy-saving air cooler includes a housing 1, a filter element 2 and a wet curtain 4. The filter element 2 is provided near the side of the housing 1. The housing 1 is used to install various components of the air cooler 16. The filter element 2 is conveniently installed inside the housing 1 to filter the air entering the housing 1. The top of the filter element 2 protrudes from the top of the housing 1, and the filter element 2 and the housing 1 are detachably connected. This structure is convenient for the filter element 2 to be removed from the top of the housing 1, thereby facilitating the replacement or cleaning of the filter element 2. A fan 16 is provided in the middle of the bottom end of the housing 1. The fan 16 is convenient for driving the airflow, thereby facilitating the cooling or ventilation of the designated air. A water tank 3 is installed at the top of the housing 1, and the water tank 3 and the housing 1 are detachably connected. The water tank 3 of this structure is convenient for the disassembly and maintenance of the water tank 3, and also convenient for the disassembly and assembly of the wet curtain 4. The wet curtain 4 is installed at the bottom of the water tank 3, the wet curtain 4 and the water tank 3 are threadedly connected, and the bottom end of the wet curtain 4 is against the bottom inner side of the outer shell 1, and the suction end of the fan 16 is arranged on the inner side of the wet curtain 4. This structure ensures that the gas pumped by the fan 16 can pass through the wet curtain 4 smoothly. At the same time, the wet curtain 4 is threadedly connected to the vertical bottom surface, so that the wet curtain 4 can be flexibly disassembled and assembled, which is convenient for the wet curtain 4 to be quickly replaced or cleaned according to usage requirements.

[0036] like Figure 2 and Figure 3 As shown, the side of the shell 1 is opened, and the side opening of the shell 1 is evenly provided with multiple grille plates 11 from top to bottom. The grille plates 11 are convenient for the external air to pass through the shell 1 smoothly into the interior thereof, ensuring that the fan 16 can drive the airflow. The top of the shell 1 is provided with a plug-in port 12 near the edge. The plug-in port 12 is convenient for installing the filter element 2, facilitating the disassembly and assembly of the filter element 2, and facilitating the flexible disassembly and assembly and use of the filter element 2. The inner side of the shell 1 is aligned with the middle of both sides of the socket and is provided with a card slot 13. The card slot 13 is convenient for installing the filter element 2, ensuring that the filter element 2 is stable inside the socket. The middle of the top of the shell 1 is provided with a threaded mounting hole 14, and the water tank 3 is threadedly connected with the threaded mounting hole 14. The threaded mounting hole 14 is convenient for installing the water tank 3, facilitating the stability of the water tank 3 on the top of the shell 1, and also facilitating the flexible disassembly and assembly and use of the water tank 3. The bottom of the shell 1 is provided with an air extraction hole 15, and the fan 16 is installed inside the air extraction hole 15. The air extraction hole 15 is convenient for cooperating with the fan 16 to drive the airflow.

[0037] like Figure 4 As shown, the edge of the filter element 2 is provided with a frame 21, and the frame 21 is used to ensure that the overall shape of the filter element 2 is sufficiently stable. Clamping rods 22 are symmetrically provided on both sides of the frame 21, and the clamping rods 22 are used to facilitate the clamping of the filter element 2 in the socket, ensuring that the filter element 2 is stable inside the socket. A pull groove 23 is provided in the middle of the top of the frame 21, and the pull groove 23 is used to facilitate the disassembly and assembly of the filter element 2, and to facilitate the replacement or cleaning of the filter element 2.

[0038] like Figure 5 and Figure 6 As shown, a threaded plate 31 is provided at the bottom of the water tank 3, and the threaded plate 31 is convenient for the water tank 3 to be threadedly connected to the top of the housing 1. A screw handle 33 is provided on the upper surface of the water tank 3, and screwing the handle 33 facilitates the disassembly and assembly of the water tank 3, and is convenient for the use of the water tank 3. A connecting pipe 34 is provided on the edge of the upper surface of the water tank 3, and a connecting cap 35 is provided on the top of the connecting pipe 34; the connecting pipe 34 and the connecting cap 35 are used to connect with an external water pipe to ensure that the water pipe supplies water to the inside of the water tank 3. An annular mounting groove 36 is provided on the bottom edge of the threaded plate 31, and the mounting groove 36 is convenient for matching with the wet curtain 4, ensuring that the wet curtain 4 is stably connected to the mounting groove 36; a plurality of water leakage holes 37 are evenly provided on the top of the mounting groove 36, and the water leakage holes 37 are convenient for water to penetrate the water tank 3 and soak the wet curtain 4, ensuring that the wet curtain 4 is in a wet state for a long time.

[0039] like Figure 7 As shown, the top and bottom of the wet curtain 4 are both provided with positioning rings 42, which are used to ensure that the wet curtain 4 is sufficiently stable. A connecting ring 41 is provided on the upper surface of the positioning ring 42 at the top of the wet curtain 4, and the connecting ring 41 is convenient for the wet curtain 4 to be stably threadedly connected to the water tank 3. A buffer groove 43 is provided in the middle of the connecting ring 41, and a hole communicating with the wet curtain 4 is provided at the bottom of the buffer groove 43; the buffer groove 43 is convenient for water flow to enter the top of the wet curtain 4, and the water flow passes through the top of the wet curtain 4 to soak the wet curtain 4.

[0040] like Figure 5 and Figure 8 As shown, a threaded hole 32 is provided at the top edge of the water tank 3, and a liquid level sensor 5 is provided in the threaded hole 32; the threaded hole 32 is convenient for installing the liquid level sensor 5, so as to facilitate the disassembly and assembly of the liquid level sensor 5. The liquid level sensor 5 is used to sense the liquid level of the water tank 3, so as to facilitate timely replenishment of water when the water level is too low. An adapter plate 51 is provided at the bottom of the liquid level sensor 5, and the adapter plate 51 is convenient for the threaded connection between the liquid level sensor 5 and the water tank 3. A sensing probe 52 is provided at the bottom of the adapter plate 51, and the bottom end of the sensing probe 52 is arranged close to the bottom end of the inner side of the water tank 3, and the sensing probe 52 is used to sense the water level. A wire 53 is provided on the side of the adapter plate 51, and the wire 53 is convenient for powering the liquid level sensor 5, so as to facilitate the normal use of the liquid level sensor 5.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy-saving air cooler, comprising a housing (1), a filter element (2) and a wet curtain (4), characterized in that: A filter element (2) is provided at a position near the side of the housing (1), the top of the filter element (2) protrudes out of the top of the housing (1), the filter element (2) and the housing (1) are detachably connected, and a fan (16) is provided at the middle of the bottom end of the housing (1), a water tank (3) is installed at the top end of the housing (1), the water tank (3) and the housing (1) are detachably connected, the wet curtain (4) is installed at the bottom of the water tank (3), the wet curtain (4) and the water tank (3) are threadedly connected, and the bottom end of the wet curtain (4) is against the bottom of the inner side of the housing (1), and the air intake end of the fan (16) is arranged on the inner side of the wet curtain (4).

2. The energy-saving air cooler according to claim 1, characterized in that: The side surfaces of the shell (1) are all provided with openings, and the side openings of the shell (1) are evenly provided with a plurality of grille plates (11) from top to bottom. The top of the shell (1) is provided with a plug-in interface (12) near the edge, and the inner side of the shell (1) is provided with a slot (13) aligned with the middle of both sides of the plug-in interface. The middle of the top of the shell (1) is provided with a threaded mounting hole (14), the water tank (3) is threadedly connected to the threaded mounting hole (14), and the bottom of the shell (1) is provided with an exhaust hole (15), and the fan (16) is installed inside the exhaust hole (15).

3. The energy-saving air cooler according to claim 1, characterized in that: The filter element (2) is provided with a frame (21) at the edge, clamping rods (22) are symmetrically provided on both sides of the frame (21), and a groove (23) is provided in the middle of the top end of the frame (21).

4. The energy-saving air cooler according to claim 1, characterized in that: The bottom end of the water tank (3) is provided with a threaded plate (31), the upper surface of the water tank (3) is provided with a twisting handle (33), the edge of the upper surface of the water tank (3) is provided with a connecting pipe (34), and the top end of the connecting pipe (34) is provided with a connecting cap (35); the bottom edge of the threaded plate (31) is provided with an annular mounting groove (36), and the top of the mounting groove (36) is evenly provided with a plurality of water leakage holes (37).

5. The energy-saving air cooler according to claim 1, characterized in that: The top and bottom ends of the wet curtain (4) are both provided with positioning rings (42), and the upper surface of the positioning ring (42) at the top of the wet curtain (4) is provided with a connecting ring (41), a buffer groove (43) is provided in the middle of the connecting ring (41), and a hole communicating with the wet curtain (4) is provided at the bottom of the buffer groove (43).

6. An energy-saving air cooler according to any one of claims 1 to 5, characterized in that: A threaded hole (32) is provided on the top edge of the water tank (3), and a liquid level sensor (5) is provided in the threaded hole (32).

7. The energy-saving air cooler according to claim 6, characterized in that: The bottom end of the liquid level sensor (5) is provided with an adapter plate (51), and the bottom of the adapter plate (51) is provided with a sensor probe (52), the bottom end of the sensor probe (52) is arranged close to the bottom end of the inner side of the water tank (3), and a wire (53) is provided on the side of the adapter plate (51).

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