阅读说明：本技术 一种恒湿恒净机 (Constant humidity and constant purification machine ) 是由 叶建荣 徐战 郭新宇 于 2021-07-27 设计创作，主要内容包括：本申请涉及一种恒湿恒净机,包括机壳、设置于机壳内部的风机组件、位于所述风机组件进风一端的除湿净化组件以及位于所述除湿净化组件远离所述风机组件一侧的加湿净化组件,所述除湿净化组件和加湿净化组件中部开设有连通于所述风机组件的进风通道,所述除湿净化组件和所述加湿净化组件的外周侧端为进风端,靠近所述进风通道的一侧端为出风端,所述进风通道内设置有封闭所述除湿净化组件或所述加湿净化组件的风道切换组件,所述除湿净化组件由进风端至出风端依次包括环形的第一空气滤芯以及冷凝器蒸发器,所述加湿净化组件由进风端至出风端依次包括第二空气滤芯以及加湿滤芯。本申请具有自由切换除湿和加湿状态,提供更为舒适的湿度环境等特点。(The application relates to a constant-humidity constant-purification machine, which comprises a machine shell, a fan component arranged in the machine shell, a dehumidification purification component positioned at the air inlet end of the fan component, and a humidification purification component positioned at one side of the dehumidification purification component, which is far away from the fan component, the middle parts of the dehumidification purification component and the humidification purification component are provided with air inlet channels communicated with the fan component, the outer peripheral side ends of the dehumidification purification component and the humidification purification component are air inlet ends, one side end close to the air inlet channel is an air outlet end, an air channel switching component for sealing the dehumidification purification component or the humidification purification component is arranged in the air inlet channel, the dehumidification purification component comprises an annular first air filter element and a condenser evaporator in sequence from an air inlet end to an air outlet end, the humidification purification component comprises a second air filter element and a humidification filter element in sequence from an air inlet end to an air outlet end. The dehumidification and humidification state switching device has the advantages of being capable of freely switching dehumidification and humidification states, providing a more comfortable humidity environment and the like.)

1. The utility model provides a constant humidity constant clean machine which characterized in that: comprises a casing (1), a fan component (2) arranged inside the casing (1), a dehumidification purification component (3) positioned at the air inlet end of the fan component (2) and a humidification purification component (4) positioned at one side of the fan component (2) and far away from the dehumidification purification component (3), wherein an air inlet channel (16) communicated with the fan component (2) is arranged in the middle of the dehumidification purification component (3), the periphery side end of the dehumidification purification component (3) and the humidification purification component (4) is an air inlet end, one side end close to the air inlet channel (16) is an air outlet end, an air channel switching component (5) for sealing the dehumidification purification component (3) or the humidification purification component (4) is arranged in the air inlet channel (16), the dehumidification purification component (3) sequentially comprises a first annular air filter element (31) and a condenser evaporator (32) from the air inlet end to the air outlet end, humidification purification component (4) are held to the air-out by the air inlet and are included second air filter (42) and humidification filter (43) in proper order.

2. The constant humidity and constant net machine according to claim 1, characterized in that: humidification purification subassembly (4) still including set up in second air filter (42) with humidification filter (43) are kept away from water tank (41) of first air filter (31) one side, the one end of humidification filter (43) immerse in water tank (41), condenser evaporimeter (32) embedded be equipped with communicate in compressor (33) of condenser evaporimeter (32), the cavity at condenser evaporimeter (32) place communicate in water tank (41).

3. The constant humidity and constant net machine according to claim 1, characterized in that: the air channel switching assembly (5) comprises a shielding air cylinder (52) which slides along the axial direction of the air inlet channel (16).

4. The constant humidity and constant net machine according to claim 3, characterized in that: the air channel switching component (5) further comprises a motor (51) arranged between the dehumidification purification component (3) and the fan component (2), an output shaft of the motor (51) is wound and fixed on a pull rope at one end of the shielding air duct (52), the casing (1) is provided with a guide rod (53) in the air inlet channel (16) along the axis direction, and the shielding air duct (52) is provided with a guide hole (521) for the guide rod (53) to slide and pass through.

5. The constant humidity and constant net machine according to claim 1, characterized in that: the air channel switching component (5) comprises a plurality of switching rotating shafts (55) rotatably arranged in the air inlet channel (16), the rotating axis of each switching rotating shaft (55) is parallel to the axis of the air inlet channel (16), the switching rotating shafts (55) are circumferentially arranged along the air inlet channel (16), a first air deflector (552) located on the inner side of the dehumidification purification component (3) and a second air deflector (553) located on the inner side end of the humidification purification component (4) are arranged at the circumferential side end of each switching rotating shaft (55), and the first air deflector (552) and the second air deflector (553) are perpendicular to each other.

6. The constant humidity and constant net machine according to claim 5, characterized in that: the air channel switching assembly (5) further comprises a switching rotating wheel (54) which is rotatably arranged between the dehumidification and purification assembly (3) and the fan assembly (2), a convex tooth (541) is arranged at the inner peripheral side end of the switching rotating wheel (54), and a gear (551) meshed with the convex tooth (541) is coaxially arranged at one end of the switching rotating shaft (55).

7. The constant humidity and constant net machine according to claim 1, characterized in that: casing (1) is including being located first casing (11) of fan subassembly (2) outside end, being located dehumidification purifies second casing (12) of subassembly (3) outside end and being located humidification purifies third casing (13) of subassembly (4) outside end, first casing (11), second casing (12) and third casing (13) splice each other.

8. The constant humidity and constant net machine according to claim 7, characterized in that: the lower ends of the first shell (11) and the second shell (12) are provided with a communication plug (14), and the upper ends of the second shell (12) and the third shell (13) are provided with a communication socket (15) for the communication plug (14) to insert.

Technical Field

The application relates to the technical field of air purification equipment, in particular to a constant-humidity constant-purification machine.

Background

Currently, a humidifier is a household appliance that increases the humidity of a room. The humidifier can humidify a designated room, and can also be connected with a boiler or a central air-conditioning system to humidify the whole building. The development of the humidifier industry in China has a history of nearly 20 years, and through years of air quality concept popularization, product research and development and market cultivation, the function and the function of the humidifier, a relatively strange small household appliance product, are gradually accepted.

The prior patent publication number: CN111322702A discloses an air humidifier, which comprises a housin, atomizing device, inlet tube and motor, inject the cavity in the casing, be equipped with air intake and air outlet with the cavity intercommunication on the casing, atomizing device rotationally establishes in the cavity and lies in between air intake and the air outlet on the direction that the air flows, atomizing device separates with the casing interval in order to form the air passage who allows the circulation of air, atomizing device includes rotatory inner tube and at least one rotatory urceolus, lateral wall around rotatory inner tube is equipped with first mesh, rotatory urceolus cover is established in the outside of rotatory inner tube, be equipped with the second mesh on the lateral wall around rotatory urceolus, the inlet tube includes into water end and play water end, it is equipped with the water jet that a plurality of circumference distribute to go out the water end, it stretches into in the rotatory inner tube to go out the water end, the motor is used for driving atomizing device and rotates.

The above related technical solutions have the following drawbacks: the air humidifier emits water vapor into dry air, while a plum rain season exists in southern areas, the humidity is high in the season, a great amount of water vapor exists, the water vapor in indoor air can be extracted only by starting the drying function of the air conditioner, the indoor air is too dry due to the drying function of the air conditioner and cannot be regulated, and a humidity environment which is very suitable for living is difficult to create indoors.

Disclosure of Invention

In order to provide a humidity environment more suitable for living, the application provides a constant humidity and constant purification machine.

The above object of the present application is achieved by the following technical solutions:

a constant-humidity constant-purification machine comprises a machine shell, a fan component arranged in the machine shell, a dehumidification purification component positioned at the air inlet end of the fan component and a humidification purification component positioned at one side of the dehumidification purification component far away from the fan component, the middle parts of the dehumidification purification component and the humidification purification component are provided with air inlet channels communicated with the fan component, the outer peripheral side ends of the dehumidification purification component and the humidification purification component are air inlet ends, one side end close to the air inlet channel is an air outlet end, an air channel switching component for sealing the dehumidification purification component or the humidification purification component is arranged in the air inlet channel, the dehumidification purification component comprises an annular first air filter element and a condenser evaporator in sequence from an air inlet end to an air outlet end, the humidification purification component comprises a second air filter element and a humidification filter element in sequence from an air inlet end to an air outlet end.

Through adopting above-mentioned technical scheme, when the air is too dry, open the permanent machine that purifies of constant humidity, the humidification purifies the subassembly and begins work, the air is held the entering by the air inlet of humidification purification subassembly, pass second air filter and humidification filter core in proper order, the air filters in second air filter department, thereby the foreign particles filtering that will contain, pass the humidification filter that the infiltration has moisture content afterwards, and bring out moisture content to the inlet air duct in, discharge by the fan subassembly along inlet air duct at last, thereby carry out the humidification to the air. When the air is too humid, the dehumidification purification assembly starts to work, the air enters from the air inlet end of the dehumidification purification assembly and sequentially passes through the first air filter element and the condenser evaporator, and after the air is filtered by the first air filter element, the moisture in the air can be directly condensed on the surface of the condenser evaporator, so that the air enters the air inlet channel by carrying less moisture, and finally the air is discharged by the fan assembly. Can freely switch dehumidification and humidification two kinds of states in this scheme to can keep indoor humidity in certain numerical value, thereby reach the humidity environment that is fit for more living, and first air filter and second air filter will guarantee the cleanliness factor of air.

Preferably, the humidification purifies the subassembly still including set up in the second air filter with the humidification filter is kept away from the water tank of first air filter one side, the one end of humidification filter is immersed in the water tank, the condenser evaporator is embedded be equipped with communicate in the compressor of condenser evaporator, the cavity at condenser evaporator place communicate in the water tank.

Through adopting above-mentioned technical scheme, when opening the dehumidification function, steam in the air will condense on the condenser evaporimeter, this in-process steam is exothermic, and the condenser evaporimeter need absorb heat, discharge fast through the heat in the compressor with the condenser evaporimeter in the medium, thereby guarantee condenser evaporimeter sustainable work, the water droplet that the condensation came out simultaneously can directly flow in the water tank, thereby store, and the water in the water tank can soak the humidification filter core again and carry out humidification work, this scheme makes whole constant humidity permanent cleaning machine can realize a whole circulation, thereby can reduce the number of times to the interior water filling of constant humidity permanent cleaning machine.

Preferably, the air duct switching assembly comprises a shielding air duct which slides along the axial direction of the air inlet channel.

Through adopting above-mentioned technical scheme, when dehumidification purification subassembly and humidification purification subassembly in arbitrary a set of during operation, need another group of as far as possible to work disturb, shelter from arbitrary a set of air-out end through the dryer that shelters from that slides in this scheme to reduce two sets of interact, make two kinds of operating condition of this constant humidity constant clean machine all can reach better operating condition.

Preferably, the air channel switching component further comprises a motor arranged between the dehumidification purification component and the fan component, an output shaft of the motor is wound with a pull rope fixed at one end of the shielding air cylinder, the casing is arranged in the air inlet channel along the axis direction, and the shielding air cylinder is provided with a guide hole for the guide rod to slide and pass through.

Through adopting above-mentioned technical scheme, when switching two kinds of mode through wind channel switching assembly, the output shaft of motor rotates to drive tensile coiling or release, thereby drive and shelter from the dryer and slide in inlet air duct, when sliding to the arbitrary a set of air-out end of alignment, accomplish the switching of different modes, and the guide arm will guarantee to shelter from the accuracy of dryer position when sliding in inlet air duct, thereby the effect of guaranteeing to shelter from.

Preferably, the air duct switching assembly comprises a plurality of switching rotating shafts rotatably arranged in the air inlet channel, the rotating axis of each switching rotating shaft is parallel to the axis of the air inlet channel, the switching rotating shafts are circumferentially arranged along the air inlet channel, a first air deflector located on the inner side of the dehumidification purification assembly and a second air deflector located on the inner side end of the humidification purification assembly are arranged at the circumferential side end of each switching rotating shaft, and the first air deflector and the second air deflector are perpendicular to each other.

By adopting the technical scheme, when the working mode is switched by the air channel switching component, the switching rotating shaft is rotated, the switching rotating shaft rotates and drives the first air deflector and the second air deflector to rotate together, when the first air deflector rotates until the side end of the second air deflector points to the axis of the air inlet channel, the first air deflector is parallel to the axis of the air inlet channel, the side ends of the adjacent first air deflectors are abutted, so that the air outlet end of the dehumidification purification component is blocked by the first air deflector, the humidification purification component can work at the moment, air can penetrate into the air inlet channel from between the adjacent second air deflectors after passing through the humidification purification component, when the switching rotating shaft is continuously rotated, the side end of the first air deflector points to the axis of the air inlet channel, the second air deflector is parallel to the axis of the air inlet channel, the side ends of the adjacent second air deflectors are abutted, so that the air outlet end of the humidification purification component is blocked, and the air passing through the dehumidification purification assembly passes through the space between the adjacent first air deflectors and enters the air inlet channel. Two working modes are switched through the rotating switching rotating shaft in the scheme, so that the switching process is simpler and more convenient.

Preferably, the air duct switching assembly further comprises a switching rotating wheel rotatably arranged between the dehumidification purification assembly and the fan assembly, convex teeth are arranged at the inner peripheral side end of the switching rotating wheel, and a gear meshed with the convex teeth in the axial direction is coaxially arranged at one end of the switching rotating shaft.

Through adopting above-mentioned technical scheme, the number of switching the pivot is very many, when carrying out the change of mode, needs to make all switching pivots rotate in step, and the switching pivot is circumference again and distributes, so drive gear revolve through the pivoted switching runner in this scheme to drive all switching pivots and rotate together, thereby realize synchronous rotation, guarantee smooth and easy when switching.

Preferably, the casing is including being located the first casing of fan subassembly outside end, being located dehumidification purification subassembly outside end the second casing and being located the third casing of humidification purification subassembly outside end, first casing, second casing with the third casing splices each other.

Through adopting above-mentioned technical scheme, fall into the triplex with the casing, each part all alone with the fan subassembly, it is fixed that dehumidification purification subassembly and humidification purification subassembly are installed, make whole constant humidity permanent purifier fall into three module completely, only need splice two liang of three modules or the three assembles alright when producing, it is more convenient, and simultaneously, the humidity condition in different areas can be inequality, can customize the length that dehumidification purification subassembly and humidification purification subassembly according to the region of difference, thereby reach better dehumidification and humidification effect.

Preferably, the lower ends of the first shell and the second shell are provided with communication plugs, and the upper ends of the second shell and the third shell are provided with communication sockets into which the communication plugs are inserted.

Through adopting above-mentioned technical scheme, insert the second casing with first casing and insert the third casing again for in the intercommunication plug inserts the intercommunication socket, thereby form a return circuit in whole constant humidity permanent cleaner, steerable triplex was worked this moment, when first casing and second casing are connected or second casing and third casing are connected, can not work, has guaranteed the security.

To sum up, the beneficial technical effect of this application does:

1. when the air is too dry, open the permanent machine that purifies of constant humidity, the humidification purifies the subassembly and begins work, the air is held by the air inlet of humidification purification subassembly and is got into, passes second air filter and humidification filter core in proper order, the air filters in second air filter department to the impurity particle filtering that will contain passes the humidification filter core that has the infiltration moisture content afterwards, and with moisture content take out to air intake passage in, discharge by the fan subassembly along air intake passage at last, thereby carry out the humidification to the air. When the air is too humid, the dehumidifying and purifying assembly starts to work, the air enters from the air inlet end of the dehumidifying and purifying assembly and sequentially passes through the first air filter element and the condenser evaporator, after being filtered by the first air filter element, the moisture in the air is directly condensed on the surface of the condenser evaporator, so that only less moisture is carried into the air inlet channel, and finally the air is discharged by the fan assembly, and the indoor humidity can be kept within a certain numerical value by freely switching the dehumidifying state and the humidifying state, so that the humidity environment more suitable for living is achieved, and the cleanliness of the air can be ensured by the first air filter element and the second air filter element;

2. when the dehumidification function is started, water vapor in the air is condensed on the condenser evaporator, the water vapor releases heat in the process, the condenser evaporator absorbs heat, heat in a medium in the condenser evaporator is rapidly discharged through the compressor, the condenser evaporator can work continuously, condensed water drops can directly flow into the water tank to be stored, water in the water tank can infiltrate the humidification filter element to perform humidification work, the whole constant-humidity constant-cleaning machine can realize a whole cycle, and the frequency of filling water into the constant-humidity constant-cleaning machine can be reduced;

3. two modes of the constant-humidity constant-cleaning machine are switched through two different air channel switching assemblies, more choices are provided, the structures of the two air channel switching assemblies are very simple, and the operation is also very convenient.

Drawings

FIG. 1 is a schematic structural diagram of a constant-humidity and constant-cleaning machine;

FIG. 2 is a sectional view of a constant humidity and constant cleaning machine;

FIG. 3 is an exploded view of the second and third housings;

FIG. 4 is a schematic structural diagram of an air channel switching assembly according to an embodiment;

FIG. 5 is a schematic structural diagram of the second housing;

fig. 6 is a schematic structural diagram of an air duct switching assembly according to a second embodiment.

In the figure: 1. a housing; 11. a first housing; 111. an air guide outer cover; 112. an air guide inner cover; 113. a ventilation hole; 12. a second housing; 121. a communicating hole; 13. a third housing; 14. a communication plug; 15. a communication socket; 16. an air inlet channel; 17. an air inlet; 2. a fan assembly; 21. a negative pressure fan; 3. a dehumidification purification component; 31. a first air filter element; 32. a condenser evaporator; 33. a compressor; 4. a humidifying and purifying component; 41. a water tank; 411. a water level sensing probe; 42. a second air filter element; 43. a humidifying filter element; 5. an air duct switching assembly; 51. a motor; 511. a driving gear ring; 52. shielding the air duct; 521. a guide hole; 53. a guide bar; 54. switching the rotating wheel; 541. a convex tooth; 55. switching the rotating shaft; 551. a gear; 552. a first air deflector; 553. a second air deflector.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Example one

Referring to fig. 1 and 2, a constant humidity and constant cleaning machine comprises a casing 1, a fan assembly 2 arranged inside the casing 1, a dehumidification purification assembly 3 positioned at an air inlet end of the fan assembly 2, a humidification purification assembly 4 positioned at one side of the dehumidification purification assembly 3 far away from the fan assembly 2, and an air channel switching assembly 5 positioned at the middle parts of the dehumidification purification assembly 3 and the humidification purification assembly 4.

Referring to fig. 1 and 3, the casing 1 includes a first casing 11, a second casing 12 and a third casing 13, the first casing 11, the second casing 12 and the third casing 13 are all cylindrical in shape, a fan-shaped communication plug 14 is integrally disposed at one end of the first casing 11 close to the second casing 12 and one end of the second casing 12 close to the third casing 13, and a communication socket 15 for inserting the communication plug 14 is fixed at one end of the second casing 12 close to the first casing 11 and one end of the third casing 13 close to the second casing 12 through bolts, so that the first casing 11, the second casing 12 and the third casing 13 can be sequentially spliced into a whole.

Referring to fig. 2, the inside welding of first casing 11 has the wind-guiding outer cover 111 that is the bowl form, the inside welding of wind-guiding outer cover 111 has the wind-guiding inner cover 112 that is hourglass hopper-shaped, form the runner that supplies the circulation of air between wind-guiding outer cover 111 and the wind-guiding inner cover 112, ventilative hole 113 has all been seted up in the runner to the both ends of first casing 11 aiming at, make the air can get into by one end ventilative hole 113, pass the runner and wear out by other end ventilative hole 113, fan subassembly 2 includes negative-pressure air fan 21 through bolt fastening in wind-guiding inner cover 112 middle part, it flows to blast the air through negative-pressure air fan 21.

Referring to fig. 1 and 2, the middle portions of the second casing 12, the third casing 13, the dehumidification purification assembly 3 and the humidification purification assembly 4 are provided with a cylindrical air inlet channel 16, and the peripheral side ends of the second casing 12 and the third casing 13 are provided with air inlet holes 17, so that when the negative pressure fan 21 works, air flows into the air inlet channel 16 along the air inlet holes 17 and is finally discharged through the air vent holes 113.

The dehumidification purification assembly 3 is located inside the second housing 12, and includes a first air filter element 31 and a condenser evaporator 32 in sequence from one end close to the air inlet 17 to one end of the air inlet channel 16, the first air filter element 31 and the condenser evaporator 32 are both in a large half circular ring shape, the second housing 12 is fixed with a compressor 33 at a gap between the first air filter element 31 and the condenser evaporator 32 through bolts, the compressor 33 is communicated with the condenser evaporator 32, air enters the second housing 12 along the air inlet 17, water vapor in the air is condensed on the surface of the condenser evaporator 32 after passing through the first air filter element 31, and the rest air enters the air inlet channel 16, the compressor 33 compresses and discharges heat in the condenser evaporator 32, thereby ensuring that the temperature of the condenser evaporator 32 can continuously condense water vapor in the air.

Referring to fig. 2 and 5, a water tank 41 is inserted into the bottom of the third housing 13, an opening communicated with the air intake channel 16 is opened in the middle of the water tank 41, the humidification and purification assembly 4 includes a second air filter 42 inserted into the third housing 13 and abutted against the top of the water tank 41, and a humidification filter 43 vertically inserted into the opening of the water tank 41, the humidification filter 43 absorbs water in the water tank 41, so that the whole becomes wet, the air introduced along the air inlet hole 17 of the surface of the third housing 13 passes through the humidifying filter 43 after passing through the second air filter 42, thereby bringing the water vapor into the air inlet channel 16 and discharging the water vapor from the ventilation hole 113, a gap exists between the openings of the humidifying filter element 43 and the water tank 41, the bottom of the second shell 12 is provided with a communicating hole 121, so that water droplets condensed by the condenser evaporator 32 can be dropped into the water tank 41 through the communication hole 121, so that humidification and dehumidification form a cycle. Two high and low water level induction heads 411 are fixed on the inner side wall of the water tank 41 through bolts, and the water level in the water tank 41 is induced through the water level induction heads 411. When the use area is a very humid environment, the humidifying and purifying assembly 4 can be removed and a water tank 41 with a larger volume can be installed for use, so as to increase the capacity of the water tank 41.

Referring to fig. 2 and 4, the air duct switching assembly 5 includes two motors 51 fixed to one end of the second casing 12 close to the first casing 11 by bolts and a shielding air duct 52 inserted into the air duct 16 in a sliding manner along an axial direction of the air duct 16, a pull rope is wound on an output shaft of the motors 51, one end of the pull rope is directly tied to two side ends of the shielding air duct 52, so that the motors 51 can drive the shielding air duct 52 to slide in the air duct 16, thereby shielding the inlet air of the humidification and purification assembly 4 or the dehumidification and purification assembly 3, a plurality of guide rods 53 are welded in the air duct 16 in the second casing 12 in parallel to the axial line of the air duct 16, guide holes 521 for the guide rods 53 to slide and insert are formed in side ends of the shielding air duct 52, and the shielding air duct 52 can slide under the guide of the guide rods 53.

The implementation principle of the embodiment is as follows:

when the air is too dry, the output shaft of the motor 51 rotates to wind the pull rope, so that the shielding air cylinder 52 slides to the inner side end of the dehumidifying and purifying component 3 under the limit of the guide rod 53, the humidifying and purifying component 4 starts to work, the air enters from the air inlet end of the humidifying and purifying component 4, sequentially passes through the second air filter element 42 and the humidifying filter element 43, is filtered at the second air filter element 42 to filter out impurity particles contained in the air, the humidifying filter element 43 absorbs the water in the water tank 41, the air passes through the humidifying filter element 43 soaked with the moisture and brings the moisture into the air inlet channel 16, and is finally discharged from the fan component 2 along the air inlet channel 16, so that the air is humidified, when the air is too humid, the output shaft of the motor 51 rotates to discharge the pull rope, the shielding air cylinder 52 slides to the inner side end of the humidifying and purifying component 4 under the limit of the guide rod 53, the dehumidification purification assembly 3 starts to work, air enters from the air inlet end of the dehumidification purification assembly 3 and sequentially passes through the first air filter element 31 and the condenser evaporator 32, moisture in the air is directly condensed on the surface of the condenser evaporator 32 after being filtered by the first air filter element 31, and then the air only carries less moisture to enter the air inlet channel 16 and is finally discharged by the fan assembly 2, and the moisture condensed on the condenser evaporator 32 flows into the water tank 41 through the communication hole 121.

Example two

The present embodiment differs from the first embodiment in that the air duct switching assembly 5;

referring to fig. 2 and 6, the air duct switching assembly 5 includes a switching wheel 54 rotatably embedded in one end of the second housing 12 close to the first housing 11 and a plurality of switching shafts 55 rotatably inserted in the second housing 12 and the third housing 13, the switching shafts 55 are circumferentially arranged in the air intake duct 16, the distances between adjacent switching shafts 55 are the same, a gear 551 is coaxially welded to the top of the switching shaft 55, convex teeth 541 are integrally formed on the inner circumferential side and the outer circumferential side of the switching wheel 54, the gear 551 is engaged with the convex teeth 541 on the inner circumferential side of the switching wheel 54, a motor 51 is fixed to one end of the second housing 12 at one side of the switching wheel 54 by bolts, a driving toothed ring 511 is keyed on an output shaft of the motor 51, the driving toothed ring 511 is engaged with the convex teeth 541 on the outer circumferential side of the switching wheel 54, so that the motor 51 can drive the switching wheel 54 to rotate and further drive all the switching shafts 55 to rotate, the switching shaft 55 is integrally provided with a first air deflector 552 at a portion inside the second casing 12, the switching shaft 55 is integrally provided with a second air deflector 553 at a portion inside the third casing 13, the first air deflector 552 and the second air deflector 553 are perpendicular to each other, when the switching shaft 55 rotates until a side end of the second air deflector 553 points to an axis of the air inlet passage 16, the first air deflector 552 is parallel to the axis of the air inlet passage 16, and at this time, side ends of adjacent first air deflectors 552 are abutted, so that an air outlet end of the dehumidifying and purifying module 3 is blocked by the first air deflector 552, at this time, the humidifying and purifying module 4 can operate, air can penetrate into the air inlet passage 16 from between adjacent second air deflectors 553 after passing through the humidifying and purifying module 4, when the switching shaft 55 continues to rotate 90 degrees, at this time, the side end of the first air deflector 552 points to the axis of the air inlet passage 16, and the second air deflector 553 is parallel to the axis of the air inlet passage 16, at this time, the side ends of the adjacent second air deflectors 553 are abutted, so as to block the air outlet end of the humidification/purification component 4, and the air passing through the dehumidification/purification component 3 will pass through the space between the adjacent first air deflectors 552 and enter the air inlet channel 16.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.