CN219624169U

CN219624169U - Vertical air conditioner

Info

Publication number: CN219624169U
Application number: CN202320795250.3U
Authority: CN
Inventors: 孙合庆; 张家栋; 逯成林
Original assignee: Hisense Air Conditioning Co Ltd
Current assignee: Hisense Air Conditioning Co Ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-09-01
Anticipated expiration: 2033-04-11

Abstract

The utility model relates to a vertical air conditioner, which belongs to the technical field of air conditioners, and comprises: the air conditioner comprises a shell, an indoor heat exchanger, an air outlet piece, an air conditioner fan, a first driving piece and a second air conditioner air outlet, wherein the shell is vertically arranged, and an air conditioner air channel is arranged in the shell; the indoor heat exchanger is arranged in the shell, and heat exchange is carried out between the refrigerant flowing in the indoor heat exchanger and the air to form a heating cycle or a refrigerating cycle; the air outlet piece is rotationally connected to the top of the shell, a first air conditioner air outlet is formed in the air outlet piece, and the first air conditioner air outlet is communicated with the air conditioner air duct; the air conditioner fan is arranged in the shell and is used for conveying air-conditioning air to the indoor through the air conditioner air duct and the first air conditioner air outlet; the first driving piece is arranged in the shell and is used for driving the air outlet piece to rotate; the second air conditioner air outlet is arranged on the shell and communicated with the air conditioner air duct, and is positioned below the air conditioner fan.

Description

Vertical air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a vertical air conditioner.

Background

An air conditioner is an apparatus for adjusting and controlling parameters such as temperature, humidity, and flow rate of ambient air in a building or structure by manual means. At present, air conditioners are divided into vertical air conditioners and hanging air conditioners, wherein the vertical air conditioners have the advantages of high power, strong wind power and the like.

In the prior art, the vertical air conditioner comprises a shell and an air outlet, wherein the air outlet is formed in the upper part of the shell, and the air outlet is arranged on the middle upper part of the shell due to rising of hot air during heating, and the hot air is difficult to be completely pressed down by the air deflector, so that the heat quantity of the bottom area of a room is less, the temperature is low, the temperature of the room is uneven, and the thermal comfort is poor.

Disclosure of Invention

The present utility model solves at least one of the technical problems in the related art to a certain extent.

Therefore, the utility model aims to provide the vertical air conditioner, when in a heating mode, air-conditioning air enters the room through the first air-conditioning air outlet at the top and the second air-conditioning air outlet at the bottom respectively, and heats the top and the bottom of the room, so that the room temperature is uniform, and the comfort is improved.

In order to achieve the above object, the present utility model provides a floor air conditioner, comprising:

the shell is vertically arranged, and an air conditioner air duct is arranged in the shell;

an indoor heat exchanger provided in the casing, wherein heat exchange is performed between a refrigerant flowing in the indoor heat exchanger and air to form a heating cycle or a cooling cycle;

the air outlet piece is rotationally connected to the top of the shell, a first air conditioner air outlet is formed in the air outlet piece, and the first air conditioner air outlet is communicated with the air conditioner air duct;

the air conditioner fan is arranged in the shell and is used for conveying air-conditioning air to the indoor through the air conditioner air duct and the first air conditioner air outlet;

the first driving piece is arranged in the shell and is used for driving the air outlet piece to rotate;

the second air conditioner air outlet is arranged on the shell and is communicated with the air conditioner air duct, and the second air conditioner air outlet is positioned below the air conditioner fan;

under the action of the air conditioner fan, air conditioner wind enters the room through the first air conditioner air outlet and the second air conditioner air outlet.

In the technical scheme, when heating the mode, the air conditioner wind gets into indoor through the first air conditioner air outlet at top and the second air conditioner air outlet of bottom respectively, heats indoor top and bottom, makes room temperature even, improves the travelling comfort.

In some embodiments of the present utility model, a first baffle is disposed at the second air-conditioning outlet, and the first baffle is used for opening or closing the second air-conditioning outlet.

In some embodiments of the present utility model, the first baffle slides inside the housing, and a first rack is disposed on the first baffle; the second driving part is arranged in the shell, and the output shaft of the second driving part is provided with a first gear meshed with the first rack.

In some embodiments of the present utility model, two sliding grooves are provided in the housing, the two sliding grooves are vertically provided, two sides of the first baffle plate slide on the two sliding grooves respectively, and a length direction of the first rack is vertically provided.

In some embodiments of the present utility model, the air conditioning fan includes a volute, the volute includes a first fan air outlet and a second fan air outlet, and the first fan air outlet is communicated with the first air conditioning air outlet; the second fan air outlet is communicated with the second air conditioner air outlet.

In some embodiments of the present utility model, a second baffle is disposed on the volute, and the second baffle is used to open or close the second fan outlet.

In some embodiments of the present utility model, the second baffle slides on the volute, and a second rack is disposed on the second baffle; the shell is internally provided with a third driving piece, and an output shaft of the third driving piece is provided with a second gear meshed with the second rack.

In some embodiments of the present utility model, an air outlet cavity is formed at the top end of the vertical side of the housing, and the air outlet piece is disposed in the air outlet cavity.

In some embodiments of the present utility model, the air outlet member is a cylinder and is vertically disposed, and the air outlet of the air conditioner is disposed on a peripheral wall of the air outlet member.

In some embodiments of the utility model, a fresh air fan is further arranged in the shell, and a fresh air outlet is formed in the shell; the fresh air fan is used for inputting outdoor fresh air into the room through the fresh air outlet.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Fig. 1 is a schematic view of an overall structure of a stand air conditioner according to an embodiment of the present utility model;

fig. 2 is a front view of a stand air conditioner according to an embodiment of the present utility model;

fig. 3 is a schematic view of an internal structure of a stand air conditioner according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a first baffle portion of a stand air conditioner according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a first baffle portion of a stand air conditioner according to an embodiment of the present utility model;

FIG. 6 is an exploded schematic view of a first baffle portion of a stand air conditioner according to an embodiment of the present utility model;

fig. 7 is a side view of an internal structure of a stand air conditioner according to an embodiment of the present utility model;

fig. 8 is a front view of an internal structure of a stand air conditioner according to an embodiment of the present utility model;

FIG. 9 is an enlarged view of portion A of FIG. 8;

fig. 10 is a schematic structural view of an air outlet member according to an embodiment of the present utility model.

In the above figures: 100. a housing; 200. an air outlet cavity; 300. an air outlet piece; 301. a first air conditioner air outlet; 400. an air-conditioning grille; 500. a volute; 600. an air supply outlet; 700. a second air conditioner air outlet; 800. a first baffle; 900. a first rack; 110. a second driving member; 120. a first gear; 130. a second baffle; 140. a second gear; 150. and a second rack.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the present utility model, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or in communication with each other, for example; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

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

In the present utility model, the floor air conditioner performs a refrigerating cycle of an indoor unit of the air conditioner by using a compressor, a condenser, an expansion valve, and an indoor heat exchanger. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies a refrigerant to the air that has been conditioned and heat exchanged. The compressor compresses refrigerant gas in a low-temperature and low-pressure state and discharges refrigerant gas in a high-temperature and high-pressure state. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The indoor heat exchanger evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low temperature and low pressure state to the compressor. The indoor heat exchanger may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioning indoor unit can adjust the temperature of the indoor space throughout the cycle. The outdoor unit of the air conditioner indoor unit refers to a portion of the refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner indoor unit includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit. The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an indoor heat exchanger. When the indoor heat exchanger is used as a condenser, the air-conditioning indoor unit is used as a heater for a heating mode, and when the indoor heat exchanger is used as an indoor heat exchanger, the air-conditioning indoor unit is used as a cooler for a cooling mode.

Hereinafter, embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, in an exemplary embodiment of the floor air conditioner of the present utility model, the floor air conditioner includes: the air conditioner comprises a shell 100, an indoor heat exchanger, an air outlet piece 300, an air conditioner fan, a first driving piece and a second air conditioner air outlet 700, wherein the shell 100 is vertically arranged, and an air conditioner air duct is arranged in the shell 100; the indoor heat exchanger is provided in the casing 100, and heat exchange is performed between the refrigerant flowing inside the indoor heat exchanger and the air to form a heating cycle or a refrigerating cycle; the air outlet piece 300 is rotatably connected to the top of the shell 100, a first air conditioner air outlet 301 is formed in the air outlet piece 300, and the first air conditioner air outlet 301 is communicated with an air conditioner air channel; the air-conditioning fan is arranged in the shell 100 and is used for conveying air-conditioning wind into the room through the air-conditioning air duct and the first air-conditioning air outlet 301; the first driving piece is disposed in the housing 100, and is used for driving the air outlet piece 300 to rotate; the second air conditioner air outlet 700 is formed in the shell 100 and is communicated with the air conditioner air duct, and the second air conditioner air outlet 700 is positioned below the air conditioner fan; under the action of the air-conditioning fans, air-conditioning wind enters the room through the first air-conditioning outlet 301 and the second air-conditioning outlet 700.

Through the above scheme, according to the physical principle, hot air may flow upward and cool air may descend, so that when a user turns on a heating mode, the hot air may be accumulated at the indoor top. When in heating mode, air-conditioning air enters the room through the first air-conditioning air outlet 301 at the top and the second air-conditioning air outlet 700 at the bottom respectively, and heats the top and the bottom of the room, so that the room temperature is uniform, and the comfort is improved.

Referring to fig. 3 to 6, in some embodiments, a first baffle 800 is disposed at the second air-conditioning outlet 700, and the first baffle 800 is used to open or close the second air-conditioning outlet 700. In a non-heating mode, or other situations where the use of the second air conditioner outlet 700 is not required. The first baffle 800 seals the second air conditioner air outlet 700, prevents dust from entering the air duct of the air conditioner through the second air conditioner air outlet 700, and prevents the dust from affecting the service life of the air conditioner.

In some embodiments, the side of the air conditioner where the outlet chamber 200 is opened is the front of the housing 100. The second air conditioner outlet is provided in front of the housing 100. Through the same direction to indoor input air conditioner wind, guarantee the intensification to the fixed regional in, improve the homogeneity that the room was raised the temperature.

In some embodiments, the front of the housing 100 has a panel through which a user can adjust the mode of the stand air conditioner, facilitating the user's operation.

Referring to fig. 3 to 6, in some embodiments, a first baffle 800 slides inside the housing 100, and a first rack 900 is disposed on the first baffle 800; a second driving member 110 is provided in the housing 100, and an output shaft of the second driving member 110 is provided with a first gear 120 engaged with the first rack 900. The second driver 110 includes, but is not limited to, an electric machine or motor. When the second air conditioner outlet 700 needs to be opened or closed, the second driving member 110 is started, the output shaft of the second driving member 110 drives the first gear 120 to rotate, and the first gear 120 is meshed with the first rack 900 to drive the first baffle 800 to move. The structure is simple and the stability is high.

In some embodiments, two sliding grooves are disposed inside the housing 100, the two sliding grooves are disposed vertically, two sides of the first baffle 800 slide on the two sliding grooves respectively, and a length direction of the first rack 900 is disposed vertically. The axis of the first gear 120 is perpendicular to the first rack 900. The sliding direction of the first baffle 800 is limited through the two sliding grooves, so that the stability of the first baffle 800 when the second air conditioner air outlet 700 is opened and closed is ensured.

In some embodiments, the chute and the first rack 900 in the housing 100 are both horizontally disposed, and the first baffle 800 slides in the chute along the horizontal direction.

In some embodiments, the first baffle 800 is hinged to the outside of the housing 100 and close to the second air-conditioning outlet 700 by a hinge shaft, and the output shaft of the second driving member 110 is directly connected to the hinge shaft between the first baffle 800 and the housing 100. The second driving member 110 is started to turn over the first baffle 800 to open or close the second air conditioner outlet 700.

In some embodiments, the housing 100 is further provided with an air inlet of the air conditioner, and the air inlet of the air conditioner fan is communicated with the air inlet of the air conditioner, and when the air conditioner fan is started, indoor air is input into the room from the air duct and the first air outlet 301 through the air inlet of the air conditioner and through the air conditioner fan.

Referring to fig. 1, in some embodiments, two vertical and opposite sidewalls of the air outlet chamber 200 are provided with air outlets 600, and the two air outlets 600 are close to the opening of the air outlet chamber 200. In the operation process of the vertical air conditioner, the first driving piece drives the air outlet piece 300 to rotate so as to adjust the air outlet direction, and when the air outlet direction of the air conditioner air is adjusted, the air outlet piece 300 does not rotate any more. When the air-conditioning air is at the maximum air-out angle, a part of the air-conditioning air is input into the room through the air supply outlet 600 on the inner side wall of the corresponding air-out chamber 200.

In some embodiments, during operation of the vertical air conditioner, the first driving member drives the air outlet fan to reciprocally rotate to achieve air sweeping, and when the air outlet fan rotates to a maximum angle, part of air-conditioned air is input into the room through the air supply outlet 600 on the inner side wall of the corresponding air outlet cavity 200.

Referring to fig. 3-8, in some embodiments, an air conditioning blower includes a volute 500, the volute 500 including a first blower outlet and a second blower outlet, the first blower outlet in communication with a first air conditioning outlet 301; the second fan outlet communicates with the second air conditioner outlet 700. The volute 500 is also in communication with an air inlet of the air conditioner. The air conditioner fan further comprises fan blades, the fan blades rotate in the volute 500, when the fan blades rotate, indoor air enters the volute 500 through the air conditioner air inlet, and part of the air is output from the first air conditioner air outlet 301 after passing through the first fan air outlet. The other part of air is output from the second air conditioner outlet 700 after passing through the second fan outlet.

In some embodiments, the indoor heat exchanger is disposed at an air inlet of the air conditioner, and in the heating mode, the air has been heated before entering the air conditioner fan.

Referring to fig. 8 and 9, in some embodiments, a second baffle 130 is disposed on the scroll 500, and the second baffle 130 is used to open or close the second fan outlet. In a non-heating mode, or other situations where the use of the second air conditioner outlet 700 is not required. The second baffle 130 seals the second fan outlet, so that the air flow in the volute 500 is prevented from being output from the second fan outlet when the air conditioner fan is operated, and noise is generated in the housing 100 and the air volume of the air conditioner air output from the first air conditioner outlet 301 is reduced.

Referring to fig. 8 and 9, in some embodiments, the second baffle 130 slides on the peripheral wall of the volute 500, and the second rack 150 is disposed on the second baffle 130; a third driving member is provided in the housing 100, and an output shaft of the third driving member is provided with a second gear 140 engaged with a second rack 150. The third driving member includes, but is not limited to, a motor or a motor, when the second fan outlet needs to be opened or closed, the third driving member is started, the output shaft of the third driving member drives the second gear 140 to rotate, and the second gear 140 is meshed with the second rack 150 to drive the second baffle 130 to move. The structure is simple and the stability is high.

In some embodiments, the second baffle 130 is hinged to the outer wall of the volute 500 by a hinge shaft and is close to the second fan outlet, and the output shaft of the third driving member is directly connected to the hinge shaft between the second baffle 130 and the volute 500. And starting the third driving piece to realize the overturning of the second baffle 130 so as to open or close the second fan air outlet.

Referring to fig. 1 and 10, in some embodiments, an air outlet chamber 200 is formed at a top end of a vertical side of the housing 100, and an air outlet 300 is disposed in the air outlet chamber 200.

In some embodiments, the air outlet 300 is a cylinder and is disposed vertically, and the first air outlet 301 is formed in the peripheral wall of the air outlet 300. The top of the air duct is communicated with the inner bottom wall of the air outlet cavity 200, and the bottom wall of the air outlet piece 300 is connected and communicated with the air duct.

In some embodiments, the first drive includes, but is not limited to, a motor. The bottom peripheral wall of the air outlet member 300 is provided with a transmission gear ring, and the output shaft of the first driving member is provided with a transmission gear, and the transmission gear is meshed with the transmission gear ring. And starting the motor, wherein an output shaft of the motor drives the gear to rotate, and the gear is meshed with the gear ring to drive the first driving piece to rotate, so that the rotation of the first driving piece is completed.

In some embodiments, the bottom end of the air outlet 300 is rotatably connected to the inner bottom wall of the air outlet chamber 200, and the top end of the air outlet 300 is rotatably connected to the inner top wall of the air outlet chamber 200. The top and the bottom of the air-out piece 300 are connected with the shell 100, so that the stability of the air-out piece 300 in the air-out cavity 200 is improved, and the structural strength of the top of the shell 100 is improved.

In some embodiments, the inner top wall and the inner bottom wall of the air outlet cavity 200 are provided with round holes, the diameter of the round holes is not smaller than that of the air outlet piece 300, the top and the bottom of the air outlet piece 300 are respectively inserted into the corresponding round holes, and the air outlet piece 300 rotates in the round holes along the axis of the air outlet piece. During production, after the air outlet piece 300 passes through the inner bottom wall of the air outlet cavity 200 from bottom to top from the inner bottom end of the shell 100, the top end of the air outlet piece 300 is inserted into the inner top wall of the air outlet cavity 200, so that the air outlet piece 300 is prevented from being separated from the air outlet cavity 200, and the structural strength is improved.

In some embodiments, the top and bottom of the air outlet 300 are provided with bearings, which include an inner race and an outer race coaxially disposed, with the inner race rotating within the outer race. The inner ring of the bearing is sleeved and connected with the air outlet piece 300, and the outer ring of the bearing is connected with the shell 100. When the air-out piece 300 rotates, the inner ring rotates in the outer ring, friction force is reduced through the bearing, and noise generated when the air-out piece 300 rotates is reduced.

In some embodiments, a fresh air fan is further arranged in the shell 100, and a fresh air outlet is formed in the shell 100; the fresh air fan is used for inputting outdoor fresh air into the room through the fresh air outlet.

In some embodiments, the opening direction of the first air-conditioning outlet 301 is along the radial direction of the air outlet 300. The first air-conditioning outlet 301 is provided with an air-conditioning grille 400, and the air guiding direction of the air-conditioning grille 400 is the same as the opening direction of the first air-conditioning outlet 301. The air-conditioning air passing through the first air-conditioning air outlet 301 is guided by the air-conditioning grille 400, so that the air-conditioning air is reduced from diffusing, the air-conditioning air is reduced from entering the air outlet cavity 200, the generation of condensed water in the air outlet cavity 200 is reduced, and the user experience is improved.

In some embodiments, the air conditioning grill 400 includes an air conditioning grill, the length direction of the air conditioning grill is vertically disposed, and the top and bottom of the air conditioning grill are respectively connected to the inner top wall and the inner bottom wall of the first air conditioning outlet 301. The width direction of the air conditioner louver is the same as the opening direction of the first air conditioner air outlet 301, and the air conditioner wind passing through the first air conditioner air outlet 301 contacts the air conditioner louver, and the turbulent flow contacts the air conditioner louver and is guided by the air conditioner louver to be output.

In some embodiments, a plurality of air conditioning louvers are provided at intervals along the width direction of the first air conditioning outlet 301. The plurality of air conditioning grids guide the air conditioning wind passing through the first air conditioning outlet 301, thereby improving the guiding effect of the air conditioning wind.

In some embodiments, the spacing of any adjacent two air conditioning grids is the same. The air-conditioning wind outputted through the first air-conditioning outlet 301 is uniformly introduced into the room.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. A floor air conditioner, characterized in that it comprises:

the air outlet piece is provided with a first air conditioner air outlet which is communicated with the air conditioner air duct;

2. The floor air conditioner according to claim 1, wherein a first baffle is arranged at the second air conditioner air outlet, and the first baffle is used for opening or closing the second air conditioner air outlet.

3. The floor air conditioner according to claim 2, wherein the first baffle slides inside the housing, and a first rack is arranged on the first baffle; the second driving part is arranged in the shell, and the output shaft of the second driving part is provided with a first gear meshed with the first rack.

4. The vertical air conditioner according to claim 3, wherein two sliding grooves are formed in the shell, the two sliding grooves are vertically formed in the shell, two sides of the first baffle plate slide on the two sliding grooves respectively, and the length direction of the first rack is vertically arranged.

5. The floor air conditioner of claim 4, wherein the air conditioner fan comprises a volute comprising a first fan outlet and a second fan outlet, the first fan outlet in communication with the first air conditioner outlet; the second fan air outlet is communicated with the second air conditioner air outlet.

6. The floor air conditioner according to claim 5, wherein a second baffle is disposed on the scroll casing, and the second baffle is used for opening or closing the second fan air outlet.

7. The floor air conditioner according to claim 6, wherein the second baffle slides on the volute, and a second rack is arranged on the second baffle; the shell is internally provided with a third driving piece, and an output shaft of the third driving piece is provided with a second gear meshed with the second rack.

8. The floor air conditioner according to any one of claims 1 to 5, wherein an air outlet cavity is formed in the top end of the vertical side of the housing, and the air outlet piece is disposed in the air outlet cavity.

9. The floor air conditioner according to any one of claims 1 to 5, wherein the air outlet member is cylindrical and vertically arranged, and the air outlet of the air conditioner is provided on a peripheral wall of the air outlet member.

10. The vertical air conditioner according to any one of claims 1 to 5, wherein a fresh air fan is further arranged in the shell, and a fresh air outlet is formed in the shell; the fresh air fan is used for inputting outdoor fresh air into the room through the fresh air outlet.