CN217274586U

CN217274586U - Portable cooling fan

Info

Publication number: CN217274586U
Application number: CN202220205828.0U
Authority: CN
Inventors: 胡少林
Original assignee: Ningbo City Electrical Appliance Co ltd
Current assignee: Ningbo City Electrical Appliance Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-08-23
Anticipated expiration: 2032-01-25

Abstract

The utility model discloses a portable cooling fan, which comprises a cooling fan body with an air inlet and an air outlet which are arranged oppositely, a drawing type water tank which is detachably connected at the lower end of the cooling fan body, and an air supply device which is arranged in the cooling fan body and is positioned between the air inlet and the air outlet; wherein, this internal air supply arrangement and the air outlet that lie in of thermantidote are provided with two at least atomizers from top to bottom vertical arrangement between, and are provided with the rivers passageway between atomizer and the suction type water tank, and this internal water pump motor that flows the rivers in the suction type water tank to the atomizer along rivers passageway water conservancy diversion that is provided with of thermantidote. The utility model discloses an atomizer replaces traditional cascade device, even air supply arrangement wind speed is lower, can not influence the moisture content in the air of output yet, makes the thermantidote have better cooling effect, and the atomizer is difficult for going mildy, and more convenience of customers washs, has solved the unable relatively poor problem of conveniently carrying and cooling effect that the thermantidote existed among the prior art method.

Description

Portable cooling fan

Technical Field

The utility model relates to a technical field of fan especially relates to a portable thermantidote.

Background

The very common appearance of a domestic appliance in people's life in the summer of inflammation, the fan that has now has the function of cooling, its structure is generally including the box, including a motor, an end cap, a controller, and a cover plate, the motor and by motor drive's wind wheel, be provided with the water tank in the box, be provided with the water pump in the water tank, water in the pump extraction water tank is and carry the cascade top with water, through cascade evaporation heat absorption, reduce the temperature of air on every side, again by motor drive wind wheel rotation production wind, the air after the drive cooling blows off the box, reach the purpose of cooling. However, the existing fan only depends on the water curtain to evaporate and absorb heat to reduce the temperature of the surrounding environment, the actual cooling effect is poor, the temperature of wind blown out by the wind wheel is not greatly different from the room temperature, and the wind is still not cold wind, so that the purpose of cooling cannot be well achieved.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The to-be-solved technical problem of the utility model is to provide a portable cooling fan, adopt the atomizer to replace traditional cascade device, even air supply arrangement wind speed is lower, can not influence the moisture content in the air of output, make the cooling fan have better cooling effect, and the atomizer is difficult for going mildy, more facilitate users to wash, solved the cooling fan in the prior art method and existed can't conveniently carry and the problem that cooling effect is relatively poor; and simultaneously, will the atomizer is located air supply arrangement with between the air outlet, can will treat atomizing liquid and atomize and discharge the liquid fog when air supply arrangement air-out, supplementary in the use forced air cooling with the water-cooled mode cooling, make the cooling effect better, use comfort is better.

(II) technical scheme

The utility model provides a solution to the above technical problems is a portable cooling fan, comprising a cooling fan body with an air inlet and an air outlet which are arranged oppositely, a drawing type water tank which is detachably connected with the lower end of the cooling fan body, and an air supply device which is arranged in the cooling fan body and is positioned between the air inlet and the air outlet; wherein, this internal being located of thermantidote air supply arrangement with be provided with two at least atomizers from top to bottom vertical arrangement between the air outlet, just the atomizer with be provided with the rivers passageway between the suction type water tank, this internal being provided with of thermantidote with rivers in the suction type water tank along rivers in the rivers passageway water conservancy diversion extremely the pumping motor of atomizer.

Furthermore, the atomizer comprises a cavity which is communicated up and down and an atomizing opening which is arranged towards one end of the air outlet; and the top end of the cavity of the atomizer, which is far away from the drawing water tank, is sealed.

Specifically, the atomizing opening is arranged towards the air outlet, so that atomized liquid can be sprayed out along the air outlet direction.

Furthermore, this internal atomizer fixing base that is used for fixing of being provided with of thermantidote the atomizer, just, the atomizer fixing base is provided with and is used for fixing the block portion of motor that draws water.

Specifically, two adjacent atomizers link up each other and connect, and the rivers of being convenient for get into every atomizer and atomize.

Preferably, a grid net is arranged at one end of the cooling fan body, which is positioned at the air inlet, and the grid net is provided with a plurality of flow guide holes for air flow to enter the cooling fan body; the air outlet of the cooling fan body is detachably connected with a blade assembly, the blade assembly comprises a plurality of blades which are arranged at intervals up and down and can be turned over up and down, and a blade connecting rod which is arranged at one end of each blade and connects each blade into a whole and is linked, and the blade connecting rod is arranged to facilitate the turning over of each blade up and down and to adjust the air direction and the air quantity of the air outlet; the blade connecting rod is provided with a plurality of first rotating holes which are vertically arranged, and each blade is provided with a first rotating shaft part matched with the first rotating holes; two ends of the blade are respectively provided with a second rotating shaft part, and the cooling fan body is correspondingly provided with a second rotating hole matched with the second rotating shaft part; any blade is provided with a flat operating part which is convenient for an operator to hold.

Preferably, the cooling fan body is provided with a charging hole for charging, so that the cooling fan is convenient to move and use; a water outlet is formed in the outer part of the drawing type water tank, and a rubber plug is detachably connected with the water outlet; the drawing water tank can contain a frozen cooling piece, so that the cooling effect is better; and a second circuit board electrically connected with the water pumping motor is arranged at the lower end of the drawing water tank in the cooling fan body.

Preferably, the drawing water tank is transparent, so that the condition in the water tank can be observed conveniently, and water can be added at any time.

By adopting the scheme, the atomizer is adopted to replace the traditional water curtain device, even if the air speed of the air supply device is low, the moisture content in the output air is not influenced, so that the cooling fan has a better cooling effect, the atomizer is not easy to mildew, the cooling fan is more convenient for a user to clean, and the problems that the cooling fan in the prior art cannot be conveniently carried and the cooling effect is poor are solved; simultaneously, will the atomizer is located air supply arrangement with between the air outlet, can will treat atomizing liquid and atomize and discharge the liquid fog in air supply arrangement air-out, supplementary cooling with water-cooling mode when using the forced air cooling, make the cooling effect better, use comfort is better.

Furthermore, air supply arrangement including rotate set up in this internal wind wheel of thermantidote and can dismantle the connection give of one end of wind wheel the driving motor of wind wheel with power.

Preferably, the driving motor is electrically connected to the second circuit board.

Preferably, the driving motor and the drawing water tank are arranged in parallel, that is, the driving motor is arranged at one end close to the air inlet, and the drawing water tank is arranged at one end close to the air outlet; the make full use of spatial arrangement for the overall structure of thermantidote is littleer, portable and removal use.

Furthermore, the driving motor is arranged at the lower end of the cooling fan body, the bottom of the wind wheel is connected with a motor shaft of the driving motor, and the top of the wind wheel is rotationally connected with the cooling fan body through a turntable; the cooling fan body is also internally provided with a wind wheel cover body which covers the outside of the wind wheel, and the wind wheel cover body is provided with symmetrically arranged opening parts for air flow to pass through.

Preferably, the wind wheel cover body is also detachably provided with a turntable fixing seat which is used for being sleeved outside the turntable, so that the rotating stability of the wind wheel can be further improved.

Specifically, the arrangement of the wind wheel cover body can improve the stability of the wind wheel.

Further, the wind wheel includes if the backup pad of at least two upper and lower interval arrangement, and adjacent two be provided with the aerofoil layer that is used for the water conservancy diversion between the backup pad, the aerofoil layer includes that a plurality of connects two between the backup pad round the aerofoil of the central axis interval arrangement of wind wheel.

Specifically, each wind plate is annularly arranged along the axial direction of the wind wheel and is arranged at intervals to form a cylindrical wind plate layer, so that the wind wheel is beneficial to uniformly discharging wind during rotation, and the wind is continuous and smooth in wind discharging; further cooperation is connected a plurality of on the aerofoil backup pad reaches the support when aerofoil stability has also guaranteed the stability of whole wind wheel, makes the air-out effect more comfortable

More specifically, the number of the supporting plates and the number of the wind plates can be reasonably configured according to different use environments, so that the wind wheel has the best air outlet efficiency and the highest energy efficiency ratio; the best cooling effect is provided while energy is saved.

Furthermore, a supporting plate arranged at one end of the wind wheel close to the driving motor is provided with a plurality of arc-shaped flow guide strips which are uniformly distributed in a divergent shape.

Specifically, the arc-shaped direction of the arc-shaped flow guide strips can be set according to the rotation direction of the wind wheel, so that the wind is more coherent and smooth.

Further, a light guide display assembly is arranged on the top of the cooling fan body; the light guide display assembly comprises a first circuit board provided with a plurality of luminous bodies, a display part covered on the first circuit board, and a light guide part arranged between the first circuit board and the display part.

Furthermore, the display part is provided with a plurality of through holes for the light-emitting surface of the light guide part to leak, one end of the display part, which is close to the first circuit board, is provided with a fixing sleeve which is communicated with the through holes and is used for installing the light guide part, one end of the fixing sleeve, which is far away from the display part, is abutted against the first circuit board and covers the light-emitting body.

Preferably, the display part is provided with a plurality of function keys, and the number of the luminous bodies and the number of the light guide bodies can be set according to the functions of the function keys on the display part.

Further, this internal being located of thermantidote air supply arrangement with be provided with the filter screen of arranging from top to bottom of at least two between the air outlet, wherein, this internal still being provided with of thermantidote is used for fixed every the filter screen mount of filter screen, just the filter screen mount includes upper and lower interval arrangement with every the spaced-apart space bar of filter screen.

Preferably, the filter screen is an activated carbon filter screen.

By adopting the above scheme, the setting of filter screen is used for right the air current of the entering of income wind gap flows out via the air outlet after filtering for the air current of derivation is more pure.

(III) advantageous effects

Compared with the prior art, the utility model designs a portable cooling fan, adopts the atomizer to replace the traditional cascade device, even if the air supply device wind speed is lower, the moisture content in the output air can not be influenced, so that the cooling fan has better cooling effect, and the atomizer is not easy to go moldy, so that the cooling fan is more convenient for users to clean, and the problems that the cooling fan in the prior art method can not be conveniently carried and the cooling effect is poor are solved; simultaneously, will the atomizer is located air supply arrangement with between the air outlet, can will treat atomizing liquid and atomize and discharge the liquid fog in air supply arrangement air-out, supplementary cooling with water-cooling mode when using the forced air cooling, make the cooling effect better, use comfort is better.

Drawings

Fig. 1 is a schematic view (showing an air outlet) of the portable cooling fan according to the embodiment;

fig. 2 is a schematic view (embodying an air inlet) of the portable cooling fan of the present embodiment;

FIG. 3 is a sectional view of the portable cooling fan of the present embodiment;

FIG. 4 is an enlarged view of the point A in FIG. 3;

FIG. 5 is an exploded view of the portable cooling fan of the present embodiment;

FIG. 6 is an enlarged view of the point B in FIG. 5;

FIG. 7 is an enlarged view of FIG. 5 at C;

FIG. 8 is an enlarged view of FIG. 5 at D;

fig. 9 is an enlarged view of E in fig. 5.

Description of reference numerals: 1. a cooling fan body; 11. an air inlet; 111. a grid net; 12. an air outlet; 13. a second rotation hole; 14. a charging hole; 15. a second circuit board; 2. a drawing type water tank; 21. a rubber plug; 3. an air supply device; 31. a wind wheel; 311. a support plate; 311-1, arc-shaped guide strips; 312. a wind plate layer; 312-1, wind plate; 312-2, connecting ribs; 32. a drive motor; 33. a turntable; 331. a turntable fixing seat; 34. a wind wheel cover body; 4. an atomizer; 41. a cavity; 42. an atomizing port; 43. an atomizer holder; 431. a fastening part; 5. a water pumping motor; 6. a light-guiding display assembly; 61. a first circuit board; 611. a light emitter; 62. a display member; 621. a through hole; 622. fixing a sleeve; 63. a light guide; 7. a filter screen; 71. a filter screen fixing frame; 72. a partition plate; 8. a blade assembly; 81. a blade; 811. a first shaft portion; 812. a second rotating shaft part; 813. an operation section; 82. a blade link; 821. a first rotation hole.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this embodiment:

as shown in fig. 1 to 9, the portable cooling fan of this embodiment includes a cooling fan body 1 having an air inlet 11 and an air outlet 12 which are oppositely disposed, a drawing water tank 2 detachably connected to a lower end of the cooling fan body 1, and an air supply device 3 disposed in the cooling fan body 1 and located between the air inlet 11 and the air outlet 12; wherein, this internal being located of thermantidote 1 air supply arrangement 3 with be provided with three atomizer 4 of vertical arrangement from top to bottom between the air outlet 12, just atomizer 4 with be provided with the rivers passageway (not shown in the figure, be close to the open-top intercommunication of rivers passageway and extraction water tank 2 through the bottom of atomizer 4 that extraction water tank 2 set up promptly between extraction water tank 2), this internal being provided with of thermantidote will rivers in the extraction water tank 2 along rivers passageway water conservancy diversion extremely the motor 5 that draws water of atomizer 4. Further, the atomizer 4 includes a cavity 41 which is through from top to bottom, and an atomizing port 42 which is arranged towards one end of the air outlet 12; and the top end of the cavity 41 of the atomizer 4, which is far away from the drawing water tank 2, is sealed. Specifically, the atomizing opening 42 is disposed toward the air outlet 12, so that the atomized liquid can be sprayed out along the air outlet direction. Further, an atomizer fixing seat 43 for fixing the atomizer 4 is arranged in the cooling fan body 1, and the atomizer fixing seat 43 is provided with a clamping portion 431 for fixing the pumping motor 5. Specifically, two adjacent atomizers 4 link up each other and connect, and the rivers of being convenient for get into every atomizer 4 and atomize. Preferably, a grid mesh 111 is arranged at one end of the cooling fan body 1, which is located at the air inlet 11, and the grid mesh 111 is provided with a plurality of flow guide holes through which air flows enter the cooling fan body 1; moreover, the air outlet 12 of the cooling fan body 1 is detachably connected with a blade assembly 8, the blade assembly 8 comprises a plurality of blades 81 which are arranged at intervals up and down and can be turned over up and down, and blade connecting rods 82 which are arranged at one ends of the blades 81 and connect the blades 81 into a whole and are linked, and the blade connecting rods 82 are arranged to facilitate the up and down turning over of the blades 81 and facilitate the adjustment of the wind direction and the air volume of the air outlet 12; wherein, the vane connecting rod 82 is provided with a plurality of first rotating holes 821 which are arranged up and down, and each vane 81 is provided with a first rotating shaft part 811 which is matched with the first rotating holes 821; two ends of the blade 81 are respectively provided with a second rotating shaft portion 812, and correspondingly, the cooling fan body 1 is provided with a second rotating hole 13 matched with the second rotating shaft portion 812; any one of the blades 81 is provided with an operation portion 813 which is a flat body and is convenient for an operator to hold. Preferably, the cooling fan body 1 is provided with a charging hole 14 for charging, so that the cooling fan is convenient to move and use; a water outlet is formed in the outer part of the pumping type water tank 2, and a rubber plug 21 is detachably connected with the water outlet; the pumped water tank 2 can contain a frozen cooling piece, so that the cooling effect is better; and a second circuit board 15 electrically connected with the water pumping motor 5 is arranged at the lower end of the drawing type water tank 2 in the cooling fan body 1. Preferably, the drawing water tank 2 is transparent, so that the condition in the water tank can be observed conveniently, and water can be added at any time. By adopting the scheme, the atomizer 4 is adopted to replace the traditional water curtain device, even if the air speed of the air supply device 3 is low, the moisture content in the output air is not influenced, so that the cooling fan has a better cooling effect, the atomizer 4 is not easy to mildew, the cooling fan is more convenient for a user to clean, and the problems that the cooling fan in the prior art cannot be conveniently carried and the cooling effect is poor are solved; simultaneously, will atomizer 4 is located air supply arrangement 3 with between the air outlet 12, can will treat when air supply arrangement 3 air-out that the atomizing liquid atomizes and discharge liquid fog, supplementary cooling with water-cooling mode when using the forced air cooling, make the cooling effect better, use comfort is better.

As shown in fig. 2-3, 5, and 7, further, the air supply device 3 includes a wind wheel 31 rotatably disposed in the cooling fan body 1, and a driving motor 32 detachably connected to one end of the wind wheel 31 and used for powering the wind wheel 31. Preferably, the driving motor 32 is electrically connected to the second circuit board. Preferably, the driving motor 32 and the water pumping tank 2 are arranged in parallel, that is, the driving motor 32 is arranged at one end close to the air inlet 11, and the water pumping tank 2 is arranged at one end close to the air outlet 12; the make full use of spatial arrangement for the overall structure of thermantidote is littleer, portable and removal use. Further, the driving motor 32 is arranged at the lower end of the cooling fan body 1, the bottom of the wind wheel 31 is connected with a motor shaft of the driving motor 32, and the top of the wind wheel is rotatably connected with the cooling fan body 1 through a turntable 33; still be provided with in the thermantidote body 1 and cover and close the wind wheel cover body 34 outside the wind wheel 31, just wind wheel cover body 34 is provided with the opening that the air feed flow of symmetrical arrangement passed. Preferably, the wind wheel cover 34 is also detachably mounted with a turntable fixing seat 331 sleeved outside the turntable 33, so as to further improve the stability of the rotation of the wind wheel 31. Specifically, the arrangement of the wind wheel cover 34 can improve the stability of the wind wheel 31. Further, the wind wheel 31 includes two support plates 311 arranged at an interval from top to bottom, and a wind plate layer 312 for guiding the flow is disposed between two adjacent support plates 311, and the wind plate layer 312 includes a plurality of wind plates 312-1 connected between two support plates 311 and arranged at an interval around the central axis of the wind wheel 31, and an annular connecting rib 312-2 connecting each wind plate 312-1 into a whole, so as to improve the strength of the wind plate 312-1. Specifically, each wind plate 312-1 is annularly arranged along the axial direction of the wind wheel 31 and is arranged at intervals to form a cylindrical wind plate layer 312, so that the wind wheel 31 is beneficial to uniformly wind out when rotating, and the wind out is continuous and smooth; the supporting plates 311 are further connected to the wind plate 312-1 in a matching manner, so that the stability of the wind plate 312-1 is supported, the stability of the whole wind wheel 31 is guaranteed, the wind outlet effect is more comfortable and further, and the supporting plates 311 arranged at one end of the wind wheel 31 close to the driving motor 32 are provided with a plurality of arc-shaped flow guide strips 311-1 which are uniformly distributed in a divergent manner. Specifically, the arc-shaped direction of the arc-shaped guide strips 311-1 can be set according to the rotation direction of the wind wheel 31, so that the wind is more continuous and smooth.

As shown in fig. 1 to 3, 5 to 6, and 8, further, a light guide display assembly 6 is disposed on the top of the cooling fan body 1; the light guide display assembly 6 includes a first circuit board 61 provided with a plurality of light emitters 611, a display member 62 covering the first circuit board 61, and a light guide member 63 disposed between the first circuit board 61 and the display member 62. Further, the display part 62 is provided with a plurality of through holes 621 for the light exit surface of the light guide part 63 to leak out, a fixing sleeve 622 which is used for installing the light guide part 63 and is communicated with the through holes 621 is arranged at one end of the display part 62 close to the first circuit board 61, one end of the fixing sleeve 622 far away from the display part 62 abuts against the first circuit board 61 and covers the light emitting body 611. Preferably, the display 62 is provided with a plurality of function keys, and the number of the light emitters 611 and the number of the light guides may be set according to the functions of the function keys on the display 62. Further, be located in cooling fan body 1 air supply arrangement 3 with be provided with three filter screen 7 of arranging from top to bottom between air outlet 12, wherein, still be provided with in cooling fan body 1 and be used for fixing every filter screen mount 71 of filter screen 7, just filter screen mount 71 includes upper and lower interval arrangement with every two space bars 72 that filter screen 7 is spaced apart. Preferably, the filter screen 7 is an activated carbon filter screen 7. By adopting the above scheme, the arrangement of the filter screen 7 is used for filtering the air flow entering the air inlet and then flowing out of the air outlet 12, so that the guided air flow is purer.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a portable thermantidote which characterized in that: the cooling fan comprises a cooling fan body (1) with an air inlet (11) and an air outlet (12) which are oppositely arranged, a drawing type water tank (2) which is detachably connected to the lower end of the cooling fan body (1), and an air supply device (3) which is arranged in the cooling fan body (1) and is positioned between the air inlet (11) and the air outlet (12); wherein, be located in thermantidote body (1) air supply arrangement (3) with be provided with two at least atomizer (4) of vertical arrangement from top to bottom between air outlet (12), just atomizer (4) with be provided with the rivers passageway between suction water tank (2), be provided with in thermantidote body (1) with rivers in suction water tank (2) along the rivers passageway water conservancy diversion extremely water pump motor (5) of atomizer (4).

2. The portable cooling fan according to claim 1, characterized in that: the atomizer (4) comprises a cavity (41) which is communicated up and down and an atomizing opening (42) which is arranged towards one end of the air outlet (12); and the top end of the cavity (41) of the atomizer (4) which is far away from the drawing water tank (2) is arranged in a closed way.

3. The portable cooling fan according to claim 2, characterized in that: be provided with in thermantidote body (1) and be used for fixing atomizer fixing base (43) of atomizer (4), just, atomizer fixing base (43) are provided with and are used for fixing block portion (431) of water pumping motor (5).

4. The portable cooling fan according to claim 1, characterized in that: air supply arrangement (3) including rotate set up in wind wheel (31) in thermantidote body (1) and can dismantle the connection give of the one end of wind wheel (31) driving motor (32) with power wind wheel (31).

5. The portable cooling fan according to claim 4, characterized in that: the driving motor (32) is arranged at the lower end of the cooling fan body (1), the bottom of the wind wheel (31) is connected with a motor shaft of the driving motor (32), and the top of the wind wheel is rotatably connected with the cooling fan body (1) through a turntable (33); the cooling fan is characterized in that a wind wheel cover body (34) which covers the outside of the wind wheel (31) is further arranged in the cooling fan body (1), and the wind wheel cover body (34) is provided with symmetrically-arranged opening parts for air flow to pass through.

6. The portable cooling fan according to claim 4, characterized in that: the wind wheel (31) comprises at least two supporting plates (311) which are arranged at intervals up and down, a wind plate layer (312) used for guiding the flow is arranged between every two adjacent supporting plates (311), and the wind plate layer (312) comprises a plurality of wind plates (312-1) which are connected between every two supporting plates (311) and arranged around the central axis of the wind wheel (31) at intervals.

7. The portable cooling fan according to claim 6, characterized in that: a supporting plate (311) arranged at one end of the wind wheel (31) close to the driving motor (32) is provided with a plurality of arc-shaped flow guide strips (311-1) which are uniformly distributed in a divergent shape.

8. The portable cooling fan according to claim 1, characterized in that: a light guide display assembly (6) is arranged at the top of the cooling fan body (1); the light guide display assembly (6) comprises a first circuit board (61) provided with a plurality of light emitting bodies (611), a display piece (62) covered on the first circuit board (61), and a light guide piece (63) arranged between the first circuit board (61) and the display piece (62).

9. The portable cooling fan according to claim 8, characterized in that: display member (62) are provided with a plurality of confession the through-hole (621) that the play plain noodles of leaded light spare (63) leaked, just display member (62) are close to the one end of first circuit board (61) be provided with through-hole (621) link up be used for the installation fixed cover (622) of leaded light spare (63), fixed cover (622) are kept away from the one end of display member (62) with first circuit board (61) offset, and the cover is in outside luminous body (611).

10. The portable cooling fan according to claim 1, characterized in that: be located in thermantidote body (1) air supply arrangement (3) with be provided with filter screen (7) of arranging from top to bottom of at least two between air outlet (12), wherein, still be provided with in thermantidote body (1) and be used for fixing every filter screen mount (71) of filter screen (7), just filter screen mount (71) are including upper and lower interval arrangement with every filter screen (7) spaced apart space bar (72).