CN215523638U - New fan - Google Patents

Abstract

The utility model provides a new fan, comprising: the fresh air inlet is communicated with the fresh air outlet to form a fresh air duct; prevent flowing backward the blast valve, locate in the new trend wind channel and be located new trend air intake department, open or close and prevent flowing backward the blast valve and make the new trend air intake open or close, prevent flowing backward the blast valve and include: the sealing plate is connected to the fresh air inlet, and a sealing channel penetrating through the sealing plate is arranged on the sealing plate and is communicated with the fresh air channel and the fresh air inlet; the clamping plate is connected to the sealing channel to open or close the sealing channel so as to open or close the backflow prevention valve; the setting includes that closing plate and cardboard prevent flowing backward the blast valve, sets up the cardboard and opens and close sealed passageway and make the new trend air intake open and close, can avoid outdoor wind to enter into the new trend wind channel through the new trend air intake in, avoids the noise that outdoor wind arouses, improves user experience.

Description

New fan

Technical Field

The utility model belongs to the technical field of fresh air, and particularly relates to a fresh air fan.

Background

The fresh air machine is provided with a fresh air inlet and a fresh air outlet, generally, the fresh air inlet is communicated with the outside directly or through a fresh air inlet pipe and the like, in strong wind weather, outdoor wind enters the fresh air duct through the fresh air inlet, airflow disturbance in the fresh air duct can be caused, the disturbance changes along with the change of the outdoor wind, the airflow collides back and forth in the fresh air duct, noise which can soothe and swell is sent out, and user experience is seriously influenced.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. For this purpose,

according to an embodiment of the present disclosure, there is provided a new fan including:

the fresh air inlet is communicated with the fresh air outlet to form a fresh air duct;

prevent flowing backward the blast valve, locate in the new trend wind channel and be located new trend air intake department opens or closes prevent flowing backward the blast valve makes the new trend air intake opens or closes, prevent flowing backward the blast valve and include:

the sealing plate is connected to the fresh air inlet, a sealing channel penetrating through the sealing plate is arranged on the sealing plate, and the sealing channel is communicated with the fresh air channel and the fresh air inlet;

and the clamping plate is connected at the sealing channel to open or close the sealing channel so that the backflow prevention air valve is opened or closed.

The setting includes the valve of preventing flowing backward of closing plate and cardboard, sets up the cardboard and opens and close sealed passageway and make the new trend air intake open and close, can avoid outdoor wind to enter into the new trend wind channel through the new trend air intake in, avoids the noise that outdoor wind arouses, improves user experience.

According to the embodiment of the disclosure, be equipped with the sealed muscle that sets up along its inner peripheral wall circumference on the internal perisporium of sealed passageway, work as the cardboard is closed when sealed passageway, the face of cardboard with the side of sealed muscle offsets, can make better sealed between cardboard and the sealed muscle, avoids in wind enters into indoor wind channel through the space between cardboard and the sealed muscle, simple structure, the realization of being convenient for.

According to the embodiment of the disclosure, the cardboard is divided into a first cardboard and a second cardboard, the first cardboard and the second cardboard are connected and are arranged in a staggered manner, the sealing ribs comprise a first sealing rib and a second sealing rib which are arranged in a staggered manner, when the cardboard closes the sealing channel, the first cardboard and the second cardboard are arranged in the two, the surface of one cardboard is abutted against the side surface of the first sealing rib, the surface of the other cardboard is abutted against the side surface of the second sealing rib, and the cardboard is suitable for various arrangement conditions of the cardboard.

According to the embodiment of the disclosure, the clamping plates are rotatably connected to the sealing channel, when the clamping plates close the sealing channel, the front plate surface of one of the clamping plates is abutted against the rear side surface of one of the sealing ribs, and the rear plate surface of the other clamping plate is abutted against the front side surface of the other sealing rib, so that the clamping plates are rotatably connected to the sealing channel, and the operation is simple.

According to the embodiment of the disclosure, the anti-backflow air valve further comprises a motor fixedly arranged on the sealing plate, an output shaft of the motor is connected with the clamping plate, the motor drives the clamping plate to rotate to provide power for rotation of the clamping plate, and therefore the anti-backflow air valve can be freely opened and closed.

According to the embodiment of the disclosure, the motor is provided with a motor power line connected with the motor power line, the sealing plate is provided with a first fixing clamping hook, the motor power line is clamped into the inner side of the first fixing clamping hook, so that the motor power line is fixed, and inconvenience brought to normal use of the fresh air machine by messy wiring of the motor power line is avoided.

According to this disclosed embodiment, still including locating the temperature sensor of sealed passageway department for detect the follow the new trend air intake gets into the air temperature in the casing can know the air inlet temperature and can carry out other operations to new fan according to the detection temperature.

According to the embodiment of the disclosure, the temperature sensor is provided with the sensor power line connected with the temperature sensor, the sealing plate is provided with the sensor wire passing hole penetrating through the peripheral wall of the sealing plate, the sensor penetrates through the sensor wire passing hole from the outer side of the sealing plate and is arranged at the sealing channel, the space can be saved, and the structure is simple and convenient to design.

According to the embodiment of the disclosure, the peripheral wall of the sealing plate is further provided with a second fixing clamping hook, the second fixing clamping hook and the sealing plate form a second fixing channel, the sensor power line is clamped into the second fixing channel, the sensor power line can be well fixed, and the sensor power line is fixed and the wiring is attractive.

According to the embodiment of the disclosure, the sensor power line is clamped into the inner side of the first fixing clamping hook, so that the sensor power line can be better fixed, and the sensor power line is fixed and the wiring is attractive.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the installation of a fresh air machine according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of another perspective of installation of a fresh air machine according to an embodiment of the present disclosure;

FIG. 3 is a perspective view of a fresh air machine according to an embodiment of the present disclosure;

FIG. 4 is a perspective view of another perspective of a fresh air machine according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a partial structure of a fresh air machine according to an embodiment of the present disclosure;

FIG. 6 is an exploded view of a portion of a fresh air machine according to an embodiment of the present disclosure;

FIG. 7 is another schematic partial structure view of a fresh air machine according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural view of a downdraft prevention valve according to an embodiment of the present disclosure;

FIG. 9 is a top cross-sectional view of a downdraft prevention valve according to an embodiment of the present disclosure;

FIG. 10 is a front cross-sectional view of a downdraft prevention valve according to an embodiment of the present disclosure;

FIG. 11 is a front view of a downdraft prevention valve according to an embodiment of the present disclosure;

FIG. 12 is an enlarged view of a portion of FIG. 11 at A;

FIG. 13 is another schematic structural view of a back draft prevention valve according to an embodiment of the present disclosure;

FIG. 14 is another partial schematic structural view of a downdraft prevention valve according to an embodiment of the present disclosure.

In the above figures: outdoor 01; indoor 02; an indoor ceiling wall 03; a decorative plate 04; a fresh air machine 10; a housing 1; a base plate 101; a front end plate 102; a rear end plate 103; side panels 104; a top plate 105; a fresh air inlet 11; a fresh air outlet 12; a fresh air duct 13; a fresh air inlet pipe 21; a fresh air outlet pipe 22; an anti-backflow air valve 3; a sealing plate 31; a sealing channel 311; the sealing ribs 312; the first sealing rib 3121; the second sealing rib 3122; a motor mounting location 313; a motor through hole 3131; a motor fixing hole 3132; motor fixing post 3133; a first fixing hook 314; a first wire incoming arm 3141; a first chamfer 31411; a second wire incoming arm 3142; a second barb 31421; a second chamfer 31422; an outer peripheral groove 315; a connecting projection 316; sensor wire passing holes 317; a second fixing hook 318; a first barb 3181; a second fixed channel 319; a chucking plate 32; a first card 321; a second card 322; a motor 41; a motor power line 42; a temperature sensor 43; a sensor power supply line 44; a wire fixing clip 45; an air intake part 51; an air intake passage 511; a first air inlet ring 512; a second wind inlet ring 513; an air outlet member 52; an air outlet channel 521; a first vent ring 522; a second wind ring 523; a filter screen 53; a fresh air blower 54.

Detailed Description

The utility model is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

The present invention provides a new blower for introducing outdoor fresh air into a room, and the new blower will be described with reference to fig. 1 to 14. Referring to fig. 3 to 6, the fresh air fan 10 includes a casing 1, a fresh air inlet 11 and a fresh air outlet 12 are formed on the casing 1, and the fresh air inlet 11 is communicated with the fresh air outlet 12 to form a fresh air duct 13.

Wherein, new trend air intake 11 forms in one side of casing, and new trend air outlet 12 forms in the opposite side of casing, and new trend air outlet can set up in the opposite side that the casing set up new trend air intake.

The fresh air inlet 11 is communicated with the outdoor air space 01, the fresh air outlet 12 is communicated with the indoor air space 02, specifically, the fresh air inlet can be directly communicated with the outdoor air space or communicated with the outdoor air space through a fresh air inlet pipe 21, and the fresh air outlet can be directly communicated with the indoor air space or communicated with the indoor air space through a fresh air outlet pipe 22.

When installing the new trend fan, the new trend fan can be horizontal installs indoor, and new trend air intake and new trend air outlet can be formed at the opposite both ends that set up of casing respectively. Specifically, the cabinet 1 includes a bottom plate 101, a front end plate 102 and a rear end plate 103 disposed at both ends in a length direction of the bottom plate, two side plates 104 disposed at both ends in a width direction of the bottom plate, and a top plate 105 disposed at a top portion opposite to the bottom plate. The fresh air inlet 11 and the fresh air outlet can be respectively arranged on the front end plate and the rear end plate.

Referring to fig. 1-2, the fresh air inlet pipe passes through the wall and is communicated with the outside. Fresh air machine can hoist and mount on indoor roof 03, and when indoor being equipped with the decorative board 04 of installing under the roof, fresh air machine can install between indoor roof 03 and decorative board 04, and the fresh air goes out the tuber pipe and can run through the decorative board downwards for the fresh air that fresh air machine introduced can flow to the decorative board below.

Because the fresh air inlet is communicated with the outside directly or through a fresh air inlet pipe and the like, in windy weather, outdoor air enters the fresh air duct through the fresh air inlet, airflow disturbance in the fresh air duct is caused, the disturbance changes along with the change of the outdoor air, the airflow collides back and forth in the fresh air duct, noise which is laughted and glowed is sent out, and the user experience is seriously influenced.

Therefore, in order to reduce noise and improve user experience, referring to fig. 5, the fresh air fan further comprises a backflow prevention air valve 3, the backflow prevention air valve 3 is arranged in the fresh air duct and located at the fresh air inlet, and the backflow prevention air valve 3 is opened or closed to enable the fresh air inlet to be opened or closed.

Referring to fig. 7, the backflow prevention air valve 3 includes a sealing plate 31 and a clamping plate 32, wherein the sealing plate 31 is connected to the fresh air inlet, a sealing channel 311 is provided on the sealing plate and runs through the sealing plate, and the sealing channel is communicated with the fresh air duct and the fresh air inlet.

The sealing channel 311 may be disposed along a thickness direction of the sealing plate 31, and the thickness direction of the sealing plate is consistent with a length direction of the fresh air machine. One end of the sealing plate can be tightly attached to the end plate provided with the fresh air inlet, so that fresh air entering from the fresh air inlet can only enter the shell through the sealing channel.

A catch plate 32 is connected at the sealing channel to open or close the back-draft prevention valve.

The setting includes the valve of preventing flowing backward of closing plate and cardboard, sets up the cardboard and opens and close sealed passageway and make the new trend air intake open and close, can avoid outdoor wind to enter into the new trend wind channel through the new trend air intake in, avoids the noise that outdoor wind arouses, improves user experience.

Referring to fig. 7-10, be equipped with on the internal perisporium of sealed passageway 311 along its internal perisporium circumference setting sealed muscle 312, when sealed passageway is closed to the cardboard, the face of cardboard offsets with the side of sealed muscle, wherein, the face of cardboard includes the preceding face of cardboard and the back face of cardboard, the side of sealed muscle includes the leading flank and the trailing flank of sealed muscle, can make better sealing between cardboard and the sealed muscle, avoid the wind to enter into indoor wind channel through the space between cardboard and the sealed muscle in, moreover, the steam generator is simple in structure, and is convenient for realize.

Referring to fig. 9, first cardboard 321 and second cardboard 322 are cut apart into to cardboard 32, wherein, first cardboard 321 and second cardboard are connected and are the setting of staggering mutually, sealed muscle is including the first sealed muscle 3121 and the sealed muscle 3122 of setting of staggering mutually, when sealed passageway is closed to the cardboard, first cardboard and second cardboard are both, one of them face offsets with the side of first sealed muscle, the face of the other offsets with the side of the sealed muscle of second, be suitable for the multiple setting condition of cardboard.

Cardboard rotatable coupling is in sealed passageway department, when sealed passageway is closed to the cardboard, in two cardboards of first cardboard and second cardboard, and in two sealed muscle of first sealed muscle and the sealed muscle of second, the preceding face of one of them cardboard offsets with the trailing flank of one of them sealed muscle, the trailing flank of another sealed muscle offsets with the leading flank of another, the cardboard of being convenient for rotates the realization of connecting in sealed passageway department, easy operation.

The cardboard can vertically set up all the time, and the rotation axis of cardboard also vertically sets up, the center of the rotation axis accessible cardboard of cardboard. The cardboard can be circular plate, and first cardboard 321 and second cardboard 322 can be the semicircle board, and is corresponding, and the cross section of the sealed passageway of cardboard setting department also is circular, and the cross section of the arbitrary department of sealed passageway can be circular, and is the same, and the shape of cardboard and the shape of sealed passageway can also be the polygon.

Referring to fig. 7-8, the fresh air machine further includes a motor 41, the motor is fixed on the sealing plate, an output shaft of the motor is connected with the clamping plate, and the motor drives the clamping plate to rotate to provide power for the rotation of the clamping plate, so that the backflow preventing air valve can be freely opened and closed. Specifically, a motor mounting position 313 is arranged on the sealing plate, the motor mounting position 313 can be arranged on the peripheral wall of the sealing plate, a motor through hole 3131 penetrating through the peripheral wall of the sealing plate can be arranged at the motor mounting position, and an output shaft of the motor is connected with the clamping plate through the motor through hole. Motor installation position department still can be equipped with the motor fixed orifices 3132 of connection on the closing plate periphery wall, and the motor passes through the motor fixed orifices to be fixed on the closing plate, and motor installation position department still can set up the motor fixed column 3133 of connection on the closing plate periphery wall, and the motor fixed orifices is located on the motor fixed column. Wherein, when the cardboard was vertical to be set up, the motor can be fixed in the top or the below of cardboard.

The cardboard rotates to be connected in sealed passageway department, and when the cardboard closed sealed passageway, the axis of cardboard and the sealed passageway of its place was perpendicular, and when the cardboard opened sealed passageway to the biggest, the cardboard was parallel with the axis of the sealed passageway of its place.

Referring to fig. 11, the motor has a motor power line 42 connected thereto, a first fixing hook 314 is provided on the sealing plate, and the motor power line is clamped into the inner side of the first fixing hook, so that the motor power line is fixed, and inconvenience brought to normal use of the fresh air machine due to disorder wiring of the motor power line is avoided.

Referring to fig. 8, the outer circumferential wall of the sealing plate is formed with an outer circumferential groove 315 formed along the circumferential direction of the outer circumferential wall, and the first fixing hook 314 is formed at the top end of the side wall of the outer circumferential groove on the side away from the fresh air inlet. The motor 41 may be disposed in a peripheral groove.

The lateral wall that the periphery groove is close to new trend air intake one side can with casing fixed connection for closing plate and casing fixed connection, wherein can be through screw fixed connection, the screw that wherein fixed closing plate and casing can penetrate the periphery groove and be close to the lateral wall of new trend air intake one side and the lateral wall that the new trend air intake one side was kept away from to the periphery groove is connected, makes the longer reinforcing fixed strength of length of screw.

The connection bulge 316 with two ends connected with the two side walls can be arranged between the two side walls of the peripheral groove, and the screws for fixing the sealing plate and the casing can firstly penetrate through the side wall of the peripheral groove close to one side of the fresh air inlet and be connected with the connection bulge or can successively penetrate through the side wall of the peripheral groove close to one side of the fresh air inlet and the side wall of the connection bulge and the side wall of the peripheral groove far away from one side of the fresh air inlet.

The fresh air machine further comprises a temperature sensor 43 arranged at the position of the sealing channel and used for detecting the temperature of air entering the shell from the fresh air inlet, so that the temperature of the inlet air can be known, and other operations can be carried out on the fresh air machine according to the detected temperature.

The temperature sensor is provided with a sensor power line 44 connected with the temperature sensor, a wire fixing clamp 45 is fixedly arranged on the sealing plate, and the sensor power line is arranged in the wire fixing clamp and can be better fixed. The wire fixing clip 45 may be fixed to the front end surface of the sealing plate, and may be fixed to the front end surface of the sealing plate by a screw. The thread fixing clip can also be arranged at the arranged connecting bulge.

Referring to fig. 11 and 13-14, according to some embodiments of the present patent, the sealing plate is provided with a sensor wire passing hole 317 penetrating through a peripheral wall of the sealing plate, and the temperature sensor passes through the sensor wire passing hole from an outer side of the sealing plate to be disposed at the sealing channel, so that space can be saved, and the structure is simple and convenient to design. Specifically, the sensor wire passing hole may be provided on the bottom wall of the peripheral groove.

Referring to fig. 14, a second fixing hook 318 is further disposed on the outer peripheral wall of the sealing plate, a second fixing channel 319 is formed between the second fixing hook and the sealing plate, the sensor power line is clamped into the second fixing channel, so that the sensor power line can be better fixed, the sensor power line is fixed, the routing is attractive, specifically, the second fixing hook is disposed on the bottom wall of the outer peripheral groove, and the second fixing hook and the side wall of the outer peripheral groove form the second fixing channel. The outer end of the second fixing clamping hook is provided with a first barb 3181 towards one side of the side wall of the outer shaft groove, so that the power line of the sensor is prevented from being separated from the second fixing channel.

Referring to fig. 12, the sensor power line 44 is also clamped into the first fixing hook, so that the sensor power line can be better fixed, and the sensor power line is fixed and the routing is beautiful. The first fixing clamping hook comprises a first incoming line arm 3151 and a second incoming line arm 3152, a line inlet is formed between the first incoming line arm and the second incoming line arm, a motor power line is located on the inner side of the first incoming line arm, a sensor power line 44 is located on the inner side of the second incoming line arm, and a second barb is arranged on the outer end of the second incoming line arm to prevent the sensor power line from being separated from the second incoming line arm. The outer sides of the end parts, close to the wire inlet, of the first wire inlet arm and the second wire inlet arm are respectively provided with a first chamfer 31411 and a second chamfer 31422, so that a power wire can be conveniently clamped in.

The temperature sensor can be arranged at the sealed channel through the sensor wire passing hole, the sensor power wire is then fixedly arranged in the second fixed channel, and then the sensor power wire is fixed on the inner side of the first fixed clamping hook.

Referring to fig. 3 and 5, the fresh air machine further includes an air inlet component 51, the air inlet component is connected to the outside of the casing and located at the fresh air inlet, an air inlet channel 511 may be formed in the air inlet component, and the air inlet component may include a first air inlet ring 512 and/or a second air inlet ring 513, wherein the cross-sectional area of the air inlet channel formed by the first air inlet ring is constant, and the cross-sectional area of the air inlet channel formed by the second air inlet ring is gradually changed, and may be gradually increased or gradually decreased from one side close to the fresh air inlet to one side far away from the fresh air inlet. Specifically, the second air inlet ring is positioned on one side, close to the fresh air inlet, of the first air inlet ring, the cross-sectional area of an air inlet channel formed by the second air inlet ring is gradually reduced from one side, close to the fresh air inlet, to one side, far away from the fresh air inlet, and the cross-sectional area of the air inlet channel of the first air inlet ring is the same as that of the air inlet channel at the outer end of the second air inlet ring.

Referring to fig. 4 and 5, the fresh air machine further includes an air outlet component 52, the air outlet component is connected to the outside of the casing and located at the fresh air outlet, an air outlet channel 521 may be formed in the air outlet component, and the air outlet component may include a first air outlet ring 522 and/or a second air outlet ring 523, where a cross-sectional area of the air outlet channel formed by the first air outlet ring is constant, and a cross-sectional area of the air outlet channel formed by the second air outlet ring gradually changes, and may gradually increase or gradually decrease from a side close to the fresh air outlet to a side far away from the fresh air outlet. Wherein, it is specific, second air-out circle is located one side that first air-out circle is close to the new trend air outlet, and the cross-sectional area of the air-out passageway that second air-out circle formed diminishes gradually to one side of keeping away from the new trend air outlet by one side that is close to the new trend air outlet, and the cross-sectional area of the air-out passageway of first air-out circle is the same with the cross-sectional area of the air-out passageway of second air-out circle outer end.

Referring to fig. 5, the fresh air fan further includes a filter screen 53 disposed in the fresh air duct and located on a side of the backflow-preventing air valve 3 away from the fresh air inlet, and the filter screen filters air entering the fresh air duct. The outer side of the filter screen can be close to the inner wall of the casing as much as possible, so that the air entering the fresh air duct flows to the fresh air outlet after passing through the filter screen as much as possible.

Referring to fig. 5, the new air blower further includes a new air blower 54 disposed in the new air duct and located on the side of the filter screen away from the new air inlet, and the new air duct is fed with air in the new air duct through the new air outlet. The fresh air fan further comprises an electrical box (not shown), and the electrical box is arranged in the fresh air duct and is positioned on one side of the fresh air fan.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A new fan, comprising:

the fresh air inlet is communicated with the fresh air outlet to form a fresh air duct;

prevent flowing backward the blast valve, locate in the new trend wind channel and be located new trend air intake department opens or closes prevent flowing backward the blast valve makes the new trend air intake opens or closes, prevent flowing backward the blast valve and include:

the sealing plate is connected to the fresh air inlet, a sealing channel penetrating through the sealing plate is arranged on the sealing plate, and the sealing channel is communicated with the fresh air channel and the fresh air inlet;

and the clamping plate is connected at the sealing channel to open or close the sealing channel so that the backflow prevention air valve is opened or closed.

2. The new fan according to claim 1, wherein the inner peripheral wall of the sealing channel is provided with a sealing rib circumferentially arranged along the inner peripheral wall thereof, and when the clamping plate closes the sealing channel, the plate surface of the clamping plate abuts against the side surface of the sealing rib.

3. The new fan according to claim 2, wherein the clamping plate is divided into a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are connected and arranged in a staggered manner, the sealing ribs comprise a first sealing rib and a second sealing rib which are arranged in a staggered manner, when the clamping plate closes the sealing channel, the plate surface of one of the first clamping plate and the second clamping plate is abutted against the side surface of the first sealing rib, and the plate surface of the other one of the first clamping plate and the second clamping plate is abutted against the side surface of the second sealing rib.

4. The fresh air machine of claim 3 wherein said clamping plates are rotatably connected to said sealing channel, and when said clamping plates close said sealing channel, the front plate surface of one of said clamping plates abuts against the rear side surface of one of said sealing ribs and the rear plate surface of the other of said clamping plates abuts against the front side surface of the other of said sealing ribs, in both of said first clamping plate and said second clamping plate, and in both of said first sealing rib and said second sealing rib.

5. The fresh air machine as claimed in claim 4, further comprising a motor fixed to the sealing plate, wherein an output shaft of the motor is connected to the chuck plate, and the motor drives the chuck plate to rotate.

6. The fresh air machine as claimed in claim 5, wherein the motor has a motor power line connected thereto, the sealing plate is provided with a first fixing hook, and the motor power line is clamped into an inner side of the first fixing hook.

7. The new fan of claim 6, further comprising a temperature sensor disposed at the sealed channel for detecting the temperature of the air entering the casing from the new air inlet.

8. The fresh air machine as claimed in claim 7, wherein the temperature sensor has a sensor power line connected thereto, the sealing plate is provided with a sensor wire passing hole penetrating through a peripheral wall of the sealing plate, and the sensor is provided at the sealing passage from an outer side of the sealing plate through the sensor wire passing hole.

9. The fresh air machine as claimed in claim 8, wherein a second fixing hook is further provided on the outer peripheral wall of the sealing plate, the second fixing hook and the sealing plate form a second fixing channel, and the sensor power line is clamped into the second fixing channel.

10. A new fan according to claim 9, characterised in that the sensor power cord snaps inside the first fixed hook.

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