WO2017005067A1

WO2017005067A1 - Intelligent air purification apparatus with dehumidification function

Info

Publication number: WO2017005067A1
Application number: PCT/CN2016/084450
Authority: WO
Inventors: 胡贵博
Original assignee: 胡贵博
Priority date: 2015-07-08
Filing date: 2016-06-02
Publication date: 2017-01-12
Also published as: CN107532809A; WO2017004919A1; CN104990172A

Abstract

An intelligent air purification apparatus with a dehumidification function comprises a heat pump apparatus (1), a water collecting apparatus (2), a controller (3), and a housing (4). The heat pump apparatus (1) comprises a compressor (5), an evaporator (6), a first radiator (7), a second radiator (8), an electromagnetic valve (9), a one-way valve (10), an expansion valve (11), and a fan (12). The surface of the evaporator and the surfaces of the radiators are coated with nanometer titanium dioxide coatings. The fan (12), the evaporator (6), the first radiator (7), and the second radiator (8) are disposed between an exhaust opening (19) and an air inlet (20). A water collection tank (14) is located between the evaporator (6) and the first radiator (7), and the second radiator (8) is located between the fan (12) and the evaporator (6).

Description

Intelligent air purifying device with dehumidification function

Technical field

The invention relates to an air purifying device, in particular to an intelligent air purifying device with a dehumidifying function.

Background technique

At present, because of the problem of outdoor air pollution, people are less and less open for window ventilation, resulting in indoor harmful bacteria, indoor air circulation and indoor humidity, which directly endanger people's health and quality of life. The conventional air purifying device usually does not have the function of dehumidification, and even if it has a dehumidifying function, the effect is not satisfactory.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide an intelligent air purifying device with a dehumidifying function for the purpose of achieving air dehumidification purification.

The technical solution adopted by the present invention is: a smart air purification device with a dehumidification function, comprising a heat pump device, a water collecting device, a controller and a casing; the heat pump device comprises a compressor, an evaporator, a first radiator, The second radiator, the electromagnetic valve, the check valve, the expansion valve and the fan, the evaporator, the first radiator, the second radiator and the surface of the sump are coated with a nano titanium dioxide coating, and the refrigerant output connector of the compressor is first The radiator and the electromagnetic valve are connected, the first radiator is connected with the expansion valve, the expansion valve is connected with the evaporator, the evaporator is connected with the compressor, the electromagnetic valve is connected with the second radiator, and the second radiator is connected with the one-way valve. The one-way valve is connected with the expansion valve; the water collecting device comprises a sump and a water receiving tank, and the sump is connected with the water receiving tank, the sump is provided with a groove, a boss and a drainage tube, and one end of the drainage tube is connected to the other end of the purification device and a groove, the inside of the boss is hollow, and an ultraviolet lamp tube is arranged, the boss is provided with a venting hole; the outer casing is provided with an exhaust port and an air inlet, a fan, a first radiator of the evaporator, and The second radiator is disposed between the exhaust port and the air inlet, the vent hole is in communication with the exhaust port and the air inlet, the sump is located between the evaporator and the first radiator, and the second radiator is located at the fan and the evaporator Between; the controller is connected to the compressor and the fan through the control line. The sump is provided with a plurality of layers, and the bottom of the groove of the bottom layer of the sump is provided with a drainage tube, and the drainage tube is connected with the water tank provided outside the outer casing; the groove of the groove of the sump which is not the lowermost layer There are drainage holes at the bottom, and there is space between the sump. Each sump is provided with a plurality of grooves and a plurality of bosses, and the drainage holes of the upper sump correspond to the grooves of the lower sump.

The working principle of a smart air purifying device with dehumidification function is: nano titanium dioxide has very valuable optical properties, nano titanium dioxide also has high chemical stability, thermal stability, non-toxicity, super hydrophilicity, non-migration It can completely contact with food, activate nano titanium dioxide under the action of ultraviolet rays and generate free radicals with high catalytic activity, which can produce strong photooxidation and reduction ability, and can catalyze and photolyze various organic substances and parts such as formaldehyde. The inorganic substance can function as a purifying indoor air, and purifies the passing air in the process of passing the air through the purifier; the intelligent air purifying device includes two working states of purifying dehumidification heating, purifying dehumidification and cooling, and purifying and dehumidifying; The heating working state is: when purifying and dehumidifying heating work, the device is placed in a room where purification and dehumidification is required, the ultraviolet lamp inside the device is opened, and the surface of the first radiator, the second radiator, the evaporator and the sump are coated with nanometers. Titanium dioxide plays a catalytic role in removing harmful substances such as formaldehyde from the air. The effect of a variety of harmful bacteria, the controller is used to control the compressor of the heat pump device and the fan is operated, and the controller is used to control the solenoid valve to be turned on, so that the first radiator and the second radiator dissipate heat to cool the evaporator; the humid air The air is drawn in from the air inlet of the outer casing, and the humid air is first heated and evaporated by the first radiator, and is cooled by the sump to absorb moisture, and then condensed and dehumidified by the evaporator, and the air condensed and dehumidified by the evaporator is heated by the second radiator. The air absorbed, condensed and dehumidified, and the warmed air are discharged from the exhaust port; the water collected by the sump and the evaporator is collected into the water tank, thereby achieving the purpose of improving the dehumidification efficiency, and providing dry heating to the room; The dehumidification and cooling working state is: when purifying dehumidification and cooling work, the controller is used to control the compressor and the fan is operated, the controller is used to control the electromagnetic valve to be turned off, the electromagnetic valve is not turned on, so that the second radiator has no refrigerant to enter; and the heat pump is controlled; The first radiator of the device dissipates heat and controls the evaporator to cool; the humid air is fed by the outer casing The mouth is drawn in, the humid air is first heated and evaporated by the first radiator, and the water is cooled by the sump to absorb moisture, and then condensed and dehumidified by the evaporator, and the cold air condensed and dehumidified by the evaporator is discharged from the exhaust port; the sump and the evaporator The absorbed water is collected into the water tank to achieve the purpose of improving the dehumidification efficiency and providing dry air to the room.

The invention has the beneficial effects that a smart air purifying device with dehumidification function is provided with a heat pump device and a water collecting device, and the ultraviolet light tube in the device is used, and the ultraviolet light is applied to the first heat sink, the second heat sink and the evaporator. And the nano titanium dioxide on the surface of the water collecting tank plays a catalytic role to remove various harmful substances such as formaldehyde in the air, killing various harmful bacteria, and utilizing the first scattered The heat exchanger and the sump are dehumidified for the first time, and then the second dehumidification is performed by the evaporator, the condensate of the evaporator is used to cool the sump, and the condensed water of the evaporator is used to absorb the steam, and the steam is turned into water. The water tank improves the dehumidification efficiency of the dehumidifier; at the same time, the air after dehumidification can also be selected as heating and cooling.

DRAWINGS

1 is a schematic structural view of a smart air purifying device having a dehumidifying function.

detailed description

The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

FIG. 1 is a schematic structural view of a smart air purifying device having a dehumidifying function, an intelligent air purifying device having a dehumidifying function, including a heat pump device 1, a water collecting device 2, a controller 3, and a casing 4; a heat pump device 1 includes a compressor 5, an evaporator 6, a first radiator 7, a second radiator 8, a solenoid valve 9, a check valve 10, an expansion valve 11, and a fan 12, an evaporator 6, a first radiator 7, and a first The second radiator 8 and the sump 14 are coated with a nano-titanium dioxide coating compressor 5, and the refrigerant output joint 13 is connected to the first radiator 7 and the electromagnetic valve 9. The first radiator 7 is connected to the expansion valve 11, and the expansion valve 11 is connected. Connected to the evaporator 6, the evaporator 6 is connected to the compressor 5, the solenoid valve 9 is connected to the second radiator 8, the second radiator 8 is connected to the check valve 10, and the check valve 10 is connected to the expansion valve 11; The device 2 includes a sump 14 provided with a groove 16, a boss 17 and a drainage tube (15). One end of the drainage tube (15) is connected to the other end of the purification device and the groove (16), the boss ( 17) hollow inside, provided with an ultraviolet lamp tube (21), the boss 17 is provided with a venting hole 18; the outer casing 4 is provided The exhaust port 19 and the intake port 20, the fan 12, the evaporator 6 first radiator 7 and the second radiator 8 are disposed between the exhaust port 19 and the intake port 20, the vent hole 18 and the exhaust port 19, and The air inlet 20 is connected, the sump 14 is located between the evaporator 6 and the first radiator 7, the second radiator 8 is located between the fan 12 and the evaporator 6, and the controller 3 passes through the control line and the compressor 5 and the fan 12. connection.

The working principle of a smart air purifying device with dehumidification function is: when working, the device is placed in a room to be cleaned, the ultraviolet lamp tube 21 is opened, and the first heat sink 7, the second heat sink 8, and the evaporator 6 are coated. And the nano titanium dioxide on the surface of the water collecting tank 14 acts as a catalyst to remove harmful substances such as formaldehyde in the air and kill a variety of harmful bacteria. The device includes two working states of purifying dehumidification heating, purifying dehumidification and cooling, and purifying and dehumidifying heating work. The state is: when purifying dehumidification heating work, a smart air purifying device with dehumidification function is placed in a room requiring dehumidification, and the compressor 5 and the fan 9 of the heat pump device 1 are controlled by the controller 3, and the controller 3 is used. The control solenoid valve 9 is turned on, so that the first heat sink 7 and the second heat sink 8 dissipate heat to cool the evaporator 6; the humid air is drawn in by the air inlet 20 of the outer casing 4, and the humid air passes through the first heat dissipation first. The device 7 is heated and evaporated, and is cooled by the sump 14 to absorb moisture, and then condensed and dehumidified by the evaporator 6, and the air condensed and dehumidified by the evaporator 6 is heated by the second radiator 8, and is absorbed, condensed and dehumidified, and heated. Discharged by the exhaust port 19; the drain hole 22 is offset from the vent hole 18 while being corresponding to the groove 16, and the dripping water droplets can directly fall into the groove 16, and on the other hand, the speed of the air entering the device is slowed down. The purifying effect and the dehumidifying effect, the water absorbed by the sump 14 and the evaporator 6 are collected into the water receiving tank via the drainage pipe 15, thereby achieving the purpose of improving the dehumidification efficiency, and providing the drying heating to the room; the purifying dehumidification and cooling working state is : During the dehumidification and cooling operation, the controller 3 controls the compressor 5 and the fan 9 to operate, and the controller 3 controls the solenoid valve 9 to be turned off, and the solenoid valve 9 is not turned on, so that the second radiator 8 is not The refrigerant enters; the first radiator 7 of the control heat pump device 1 dissipates heat, and controls the evaporator 6 to cool; the humid air is drawn in by the air inlet 20 of the outer casing 4, and the humid air is first heated and evaporated by the first radiator 7. The sump 14 cools and absorbs moisture, and then condenses and dehumidifies through the evaporator 6, and the chilled air that has been condensed and dehumidified by the evaporator 6 is discharged through the exhaust port 19; the water absorbed by the sump 14 and the water absorbed by the evaporator 6 passes through the drain pipe 15 It is collected into the water tank to achieve the purpose of improving the dehumidification efficiency and providing dry air to the room.

A smart air purifying device with dehumidification function purifies dehumidification heating work, after humid air enters through the air inlet 20, is heated by the first radiator 7 to become water vapor, and the water vapor is collected by the bottom layer of the sump 14 The vent hole 18 enters, evaporates and flows to the back position of the upper sump 14, and is continuously cooled into water droplets by the position of the back surface, and the water drops flow into the groove 16 of the sump 14 below, and then the groove The drain hole 22 of the 16 flows into the sump 14 of the lowermost layer, and flows from the groove 16 of the bottommost sump 14 through the drain pipe 15 to the water receiving tank, and the first radiator 7 is used to heat and evaporate the humid air. The sump 14 is used to cool the moisture absorbed by the humid air; after the first dehumidification, the humid air flows from the vent hole 18 of the uppermost sump 14 to the evaporator 6, and is cooled by the evaporator 6 to be condensed into water, which is wet. The air is dehumidified a second time; the condensed water is dropped from the evaporator 6 to the lower sump 14, and the condensed water flows into the sump of the lowermost layer through the drain hole 22 of the groove 16 of the sump 11 of the non-final layer Within 14, collect water from the bottom layer 14 is collected into the water receiving tank via the drainage pipe 15; the humid air absorbs moisture twice through the radiator 7, the sump 14 and the evaporator 6, and then enters the second radiator 8, which is heated by the second radiator 8 Exhaust port 19 is discharged; so continuous circulation, continuous absorption and removal of indoor space Gas moisture.

When the intelligent air purifying device with dehumidification function purifies the dehumidification and cooling operation, the humid air enters the air inlet 20, and is heated by the first radiator 7 to become water vapor, and the water vapor is collected by the bottom layer of the sump 14 The venting opening 18 enters, evaporates and flows to the back position of the upper sump 14, and is continuously cooled into water droplets by the back position thereof, and the water drops flow into the groove 16 of the lower sump 14 of the lower layer, and then the concave The drain hole 22 of the tank 16 flows into the sump 14 of the lowermost layer, and flows from the groove 16 of the bottommost sump 14 through the drain pipe 15 to the water receiving tank, and the first radiator 7 is used to heat and evaporate the humid air. The sump 14 is used to cool the moisture absorbed by the humid air; the humid air after the first dehumidification is discharged from the vent hole 18 of the uppermost sump 14 to the evaporator 6, and is cooled and condensed into water by the evaporator 6, The humid air is subjected to a second dehumidification; the condensed water is dropped by the evaporator 6 to the lower sump 14, and the condensed water flows into the lowermost set through the drain hole 22 of the groove 16 of the sump 11 of the non-last layer of each layer. Inside the sink 14, and then the bottom layer The trough 14 is discharged into the water receiving tank through the drainage pipe 15; the moist air is absorbed by the radiator 7, the sump 14 and the evaporator 6 twice, and then the dehumidified cold air is discharged from the exhaust port 19; Absorbs moisture from the indoor air.

In order to implement dehumidification of an intelligent air purifying device having a dehumidifying function, the sump 14 is provided with not less than two layers, and a drain pipe 15 is disposed in the lowermost sump 14; a sump 14 which is not the lowermost layer. The groove bottom of the groove 16 is provided with a drainage hole 22, and a space is left between the sump 14. Each sump 14 is provided with a plurality of grooves 16 and a plurality of bosses 17, and drainage holes of the upper sump (11). (20) A groove (13) corresponding to the lower sump (11). The exhaust port 19 is provided in plurality, the exhaust port 19 is provided on the upper end surface 28 of the outer casing 4, the air inlet port 20 is provided in plurality, the air inlet port 20 is provided on the peripheral wall 29 of the outer casing 4, and the fan 12 is located at the exhaust port 19 Below, the second radiator 8 is located below the fan 12, the evaporator 6 is located below the second radiator 8, the sump 14 is located below the evaporator 6, and the first radiator 7 is located below the sump 14, the first radiator 7 Located above the air inlet 20; the base of the fan 12, the second radiator 8, the evaporator 6, the sump 14, and the fixed connection of the first radiator 7 to the outer casing 4; the sump 14 is formed of an aluminum alloy plate.

In order to implement a control function for improving a smart air purifying device having a dehumidifying function, the controller 3 is provided with a humidity sensor 24 and a control panel 25, and the control panel 25 is provided with an automatic control switch 26, a cold air output switch 27 and a stop switch 35, and humidity. The sensor 24 is mounted to the air inlet 20, and the humidity sensor 24 is coupled to the controller 3 via a sensing line.

A smart air purifying device with dehumidification function purifies dehumidification heating work, presses self The control switch 26 controls the solenoid valve 9 to be energized, the solenoid valve 9 is turned on, the second radiator 8 has refrigerant passing therethrough, the second radiator 8 dissipates heat by dehumidifying air, and the exhaust port 19 discharges the dehumidified heater. When a smart air purifying device with dehumidification function purifies the dehumidification and cooling operation, the cold air output switch 27 is pressed, the controller 3 controls the electromagnetic valve 9 to be powered off, the electromagnetic valve 9 is not turned on, and the second radiator 8 has no refrigerant passing through The second radiator 8 does not dissipate heat, the exhaust port 19 discharges the dehumidified cold air; the evaporator 6 drops to the sump 14 condensed water, and the drainage hole 22 of the groove 16 and the vent hole 18 of the uppermost sump 14 It flows into the sump 14 of the next layer, and finally flows to the sump 14 of the last layer, and the sump 14 of each layer is cooled by the condensed water, and the temperature difference between the sump 14 and the humid air heated by the radiator 7 is increased, and the temperature difference is utilized. The sump 14 of each layer in which the condensed water is cooled is brought into contact with the warmed humid air to cool the heated water vapor into water droplets, thereby improving the efficiency of dehumidification.

When the intelligent air purifying device with dehumidification function purifies the dehumidification heating work, the automatic control switch 26 is pressed, and the controller 3 enters the automatic control state of the dehumidification and heating, when the indoor air humidity reaches the set upper limit of the humidity, The humidity sensor 24 transmits its humidity signal to the controller 3, and the controller 3 controls the power supply to turn on the compressor 5, the fan 12, and the solenoid valve 9, and dehumidifies with the first radiator 7, the sump 14, and the evaporator 6; The indoor air humidity is continuously decreased. When the humidity of the indoor air is lowered to the set lower humidity limit, the humidity sensor 24 transmits its humidity signal to the controller 3, and the controller 3 cuts off the compressor 5, the fan 12, and the solenoid valve 9. The power supply, a smart air purifying device with dehumidification function, stops purifying dehumidification heating.

When the intelligent air purifying device with dehumidification function purifies the dehumidification and cooling operation, the cold air output switch 27 is pressed, and the controller 3 enters the automatic dehumidification and cooling operation state, when the indoor air humidity reaches the set humidity upper limit value. When the humidity sensor 24 transmits its humidity signal to the controller 3, the controller 3 controls the power supply to turn on the compressor 5 and the fan 12, cuts off the power of the solenoid valve 9, and utilizes the first radiator 7, the sump 14, and the evaporator. 6 dehumidification; as the indoor air humidity continuously decreases, when the humidity of the indoor air decreases to the set lower humidity limit value, the humidity sensor 24 transmits its humidity signal to the controller 3, and the controller 3 cuts off the compressor 5 and the fan 12 The power supply, a smart air purification device with dehumidification function, stops purifying dehumidification and cooling.

When an intelligent air purifying device having a dehumidifying function is operated, the humid air entering the radiator 7 is heated into water vapor, and the water vapor enters through the plurality of vent holes 18 of the sump 14 of each layer, and the heated water vapor directly evaporates. To the back surface of the sump 14 of each layer, the back surface of each of the sump 14 cooled by the condensed water is brought into full contact with water vapor to cool the steam into water, and the condensed water dropped from the evaporator 6 to the lower sump 14 , by the last layer of the sink 14 above each The drain hole 22 of the sump 14 flows into the sump 14 of the last layer, and the humid air heated by the first radiator 7 passes through the drain hole 22 of each sump 14 and is condensed and absorbed by the drain hole 22. Turning into water, discharging into the water tank through the drainage pipe 15, further improving the efficiency of dehumidification; when the fan 12 is in operation, the flow of air in the outer casing 4 is directed to the exhaust port 19 by the air inlet 20; a dehumidification function When the intelligent air purifying device is in operation, the heat absorbed by the evaporator 6 is converted into the first radiator 7, and the first radiator 7 is used to heat and evaporate the humid air.

The heat pump device 1 includes a reservoir 30 and a gas-liquid separator 31; the expansion valve 11 is connected to the reservoir 30, the reservoir 30 is connected to the first radiator 7 and the second radiator 8, and the compressor 5 and the gas-liquid separator 31 are connected. Connected, the gas-liquid separator 31 is connected to the evaporator 6; the outer casing 4 is provided with a control chamber 32, the compressor 5, the gas-liquid separator 31, the reservoir 30 and the expansion valve 11 are disposed in the control chamber 32; the control chamber 32 is located Below the port 20, the control chamber 32 is provided with a partition 33 separating the control chamber 32 from the air inlet 20; the water tank is disposed outside the outer casing 4, and the outer casing 4 is provided with a hook, and the water tank is hung on the hook.

Claims

A smart air purifying device with dehumidification function, characterized in that the intelligent air purifying device with dehumidification function comprises a heat pump device (1), a water collecting device (2), a controller (3) and a casing (4) The heat pump device (1) includes a compressor (5), an evaporator (6), a first radiator (7), a second radiator (8), a solenoid valve (9), a check valve (10), An expansion valve (11) and a fan (12), the evaporator (6), the first heat sink (7) and the second heat sink (8) are coated with a nano titanium dioxide coating, and the refrigerant output of the compressor (5) The joint (13) is connected to the first radiator (7) and the electromagnetic valve (9), the first radiator (7) is connected to the expansion valve (11), and the expansion valve (11) is connected to the evaporator (6) for evaporation. The (6) is connected to the compressor (5), the solenoid valve (9) is connected to the second radiator (8), the second radiator (8) is connected to the check valve (10), and the check valve (10) is The expansion valve (11) is connected; the water collecting device (2) comprises a sump (14), the sump (14) is provided with a groove (16), a boss (17) and a drainage tube (15), and the drainage tube (15) One end is connected to the other end of the purification device and the groove (16), the inside of the boss (17) is hollow, and is provided with purple The lamp tube (21), the boss (17) is provided with a venting hole (18); the outer casing (4) is provided with an exhaust port (19) and an air inlet (20), a fan (12), and an evaporator (6) A radiator (7) and a second radiator (8) are disposed between the exhaust port (19) and the intake port (20), the vent hole (18) and the exhaust port (19) and the air inlet (20) Connected, the sump (14) is located between the evaporator (6) and the first radiator (7), and the second radiator (8) is located between the fan (12) and the evaporator (6); the controller (3) ) is connected to the compressor (5) and the fan (12) through a control line.
The intelligent air purifying device with dehumidification function according to claim 1, wherein the sump (14) is provided with a plurality of grooves (16) of the sump (14) of the lowermost layer. The bottom of the groove is provided with a drainage hole (22), and a space is left between the sump (14), and each sump (14) is provided with a plurality of grooves (16) and a plurality of bosses (17).
The intelligent air purifying device with dehumidification function according to claim 1, characterized in that: the controller (3) is provided with a humidity sensor (24) and a control panel (25), and the control panel (25) is provided with an automatic A control switch (26), a cool air output switch (27), and a stop switch (35) are mounted, the humidity sensor (24) is mounted to the air inlet (20), and the humidity sensor (24) is coupled to the controller (3) via a sensing line.
The intelligent air purifying device with dehumidification function according to claim 2, characterized in that: the groove (16) of each of the sump (14) of each layer is provided with a plurality of grooves (16) Connected.
The intelligent air purifying device with dehumidification function according to claim 2, characterized in that: the plurality of sump (14), the drainage hole (22) of the upper sump (14) corresponds to the lower sump (14) Groove (16).
The intelligent air purifying device with dehumidification function according to claim 1, characterized in that: the exhaust port (19) is provided in plurality, and the exhaust port (19) is provided on the upper end surface of the outer casing (4) ( 28), the air inlet (20) is provided in plurality, the air inlet (20) is disposed on the peripheral wall (29) of the outer casing (4); the fan (12) is located below the exhaust port (19), and the second radiator (8) located below the fan (12), the evaporator (6) is located below the second radiator (8), the sump (14) is located below the evaporator (6), and the first radiator (7) is located in the sump ( 14) Below, the first radiator (7) is located above the air inlet (20); the base of the fan (12), the second radiator (8), the evaporator (6), the sump (14) and the A fixed connection of a heat sink (7) to the outer casing (4).
A smart air purifying device with dehumidification function according to claim 1, characterized in that said sump (14) is composed of an aluminum alloy plate. The surface of the sump (14) is coated with a nano-titanium dioxide coating.
The intelligent air purifying device with dehumidification function according to claim 1, characterized in that: the heat pump device (1) comprises a reservoir (30) and a gas-liquid separator (31); an expansion valve (11) and The reservoir (30) is connected, the reservoir (30) is connected to the first radiator (7) and the second radiator (8); the compressor (5) is connected to the gas-liquid separator (31), and the gas-liquid separator ( 31) connected to the evaporator (6); the outer casing (4) is provided with a control chamber (32), the compressor (5), the gas-liquid separator (31), the reservoir (30) and the expansion valve (11) are provided for control Inside the room (32).
The intelligent air purifying device with dehumidification function according to claim 8, wherein the control room (32) is located below the air inlet (20), and the control room (32) is provided with a partition (33). Separate the control chamber (32) from the air inlet (20).
The intelligent air purifying device with dehumidification function according to claim 1, characterized in that: the outer casing (4) is provided with a water receiving tank, the outer casing (4) is provided with a hook, and the water receiving tank is hung on the hook, and the water receiving tank is The drainage tube (15) is connected.