CN114370666A

CN114370666A - Distributed air supply device and air conditioner

Info

Publication number: CN114370666A
Application number: CN202210021910.2A
Authority: CN
Inventors: 张亚国; 薛寒冬; 邓朝胜
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-04-19

Abstract

The invention provides a distributed air supply device and an air conditioner, wherein the distributed air supply device comprises an air duct machine and a suspended ceiling, the air duct machine is arranged in the suspended ceiling, a first air port is arranged on the front side of the suspended ceiling, and the front side is opposite to a wall and connected with the ceiling; the tuber pipe machine includes: the air conditioner comprises a shell, a fan, a heat exchanger and a first air return opening, wherein the first air return opening is formed in the top of the shell and can be communicated with the first air opening to suck air from the first air opening, so that air flow is driven by the fan to sequentially enter the shell through the first air opening and the first air return opening and exchange heat through the heat exchanger. According to the invention, the problem of inconvenient maintenance of mounting and dismounting below the suspended ceiling is solved, so that maintenance is carried out on the front side of the suspended ceiling, a lower maintenance port is not needed for a unit, the front maintenance is realized, and the suspended ceiling is more convenient and more attractive in appearance.

Description

Distributed air supply device and air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to a distributed air supply device and an air conditioner.

Background

In recent years, as the indoor unit of the household central air conditioner is installed in a suspended ceiling (also called a ducted air conditioner), the household central air conditioner has the advantages of attractive installation and small occupied space, and the market share is continuously increased. At present, the mainstream air pipe machine only has one air outlet, can not realize refrigeration horizontal air supply, air supply under heating, and user comfort experiences relatively poorly. For example, CN 104697044B proposes two air outlets, but needs to increase the unit width, and the engineering installation is complex, and the cost performance of the solution is low. In addition, most of the existing main stream air pipe machine structures have air outlet and air return on two surfaces which are vertical to each other, so that the existing main stream air pipe machine is not attractive and installation cost is not saved. More and more users are demanding products with both supply and return air in one direction.

In addition, most of the existing main stream air pipe machine structure is provided with air outlet and air return on two surfaces which are vertical to each other, so that the existing main stream air pipe machine is not attractive and saves the installation cost; the invention provides a distributed air supply device and an air conditioner, which are researched and designed for solving the technical problems that a user cannot effectively maintain the interior due to the fact that an air return inlet and an air outlet are arranged at the lower end of a suspended ceiling and the like.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects that the lower part of a suspended ceiling of a duct machine in the prior art is not attractive due to the fact that the lower part of the suspended ceiling is provided with downward return air, and the installation, the disassembly and the maintenance are inconvenient, so that the distributed air supply device and the air conditioner are provided.

In order to solve the problems, the invention provides a distributed air supply device which comprises an air duct machine and a suspended ceiling, wherein the air duct machine is arranged inside the suspended ceiling, a first air opening is formed in the front side of the suspended ceiling, and the front side is opposite to a wall and connected with the ceiling;

the tuber pipe machine includes: the air conditioner comprises a shell, a fan, a heat exchanger and a first air return opening, wherein the first air return opening is formed in the top of the shell and can be communicated with the first air opening to suck air from the first air opening, so that air flow is driven by the fan to sequentially enter the shell through the first air opening and the first air return opening and exchange heat through the heat exchanger.

In some embodiments, a second air return opening is further disposed at the front end of the casing, the front end of the casing is opposite to the front side of the suspended ceiling, the second air return opening can be communicated with the first air opening to enable air to be sucked into the casing from the second air return opening, and the heat exchanger is spaced from the top of the casing by a preset distance.

In some embodiments, the heat exchanger is attached to the upper end of the casing such that the front end of the casing is free of the second air return opening.

In some embodiments, a third air return opening is further disposed at the rear end of the casing, the rear end of the casing is opposite to the front side of the suspended ceiling, the rear end of the casing is opposite to the wall, and the third air return opening can also be communicated with the first air return opening so as to enable air to be sucked into the casing through the third air return opening.

In some embodiments, the first air return opening is spaced apart from the ceiling by a first predetermined distance, the second air return opening is spaced apart from the front side of the ceiling by a second predetermined distance, and the third air return opening is spaced apart from the wall by a third predetermined distance, and the airflow enters the interior of the ceiling through the first air opening and sequentially reaches the second air return opening, the first air return opening, and the third air return opening.

In some embodiments, a second air opening is further formed in the front side of the suspended ceiling, a first air outlet is further formed in the front end of the casing, the front end of the casing is opposite to the front side of the suspended ceiling, the first air outlet can be communicated with the second air opening, so that air subjected to heat exchange by the heat exchanger can be blown out through the first air outlet and the second air opening in sequence, and the first air opening and the second air opening are arranged at intervals in the horizontal direction and/or the vertical direction.

In some embodiments, a third air opening is further formed in the lower side of the suspended ceiling, and a second air outlet is further formed in the lower end of the casing, so that air subjected to heat exchange by the heat exchanger can be blown out through the second air opening and the third air opening in sequence.

In some embodiments, when the second air return opening is further included:

the distributed air supply device also comprises a volute, a first air return channel is defined between the upper side of the volute and the shell, and the second air return opening is communicated with the first air return channel so as to be capable of sucking air through the second air return opening, entering the first air return channel and reaching the heat exchanger through the first air return channel; an air outlet channel is defined below the volute and comprises a first air outlet channel and a second air outlet channel, the first air outlet channel is communicated with the first air outlet, and the second air outlet channel is communicated with the second air outlet.

In some embodiments, the air outlet channel is further provided with a moving component, the air duct further includes a volute tongue, the moving component can rotate to connect with the volute casing at one end thereof to close the first air outlet channel and open the second air outlet channel, the moving component can rotate to connect with the volute tongue at one end thereof to close the second air outlet channel and open the first air outlet channel, and the moving component can also rotate to connect with the volute casing at one end thereof in a C position, in which one end of the moving component is neither connected with the volute tongue nor with the volute casing to simultaneously open the first air outlet channel and the second air outlet channel.

In some embodiments, the fan is a cross-flow fan; and/or the first air outlet is connected with the second air inlet through a first connecting part, the second air outlet is connected with the third air inlet through a second connecting part, and a preset gap is formed between the first air inlet and the machine shell.

In some embodiments, an engineering maintenance opening for maintenance is formed in the front side of the suspended ceiling, a first access opening is further formed in the front end of the casing of the ducted air conditioner, a second access opening is further formed in the side face of the casing, and the side face and the front end are two faces which are connected.

In some embodiments, the distributed air supply device further includes a volute, a portion of the front end of the casing opposite to the first air inlet forms a notch, the notch extends to a set position of the upper end of the volute, the set position is close to the heat exchanger relative to the front side of the casing, so that a portion of the volute is exposed outside, a second air return opening is formed between the upper end of the casing and the volute, and the second air return opening can communicate with the first air inlet for returning air.

The invention also provides an air conditioner which comprises the distributed air supply device.

The distributed air supply device and the air conditioner provided by the invention have the following beneficial effects:

1. according to the invention, the first air opening is formed in the front side of the ceiling on which the ducted air conditioner is installed, and the first air return opening of the ducted air conditioner is arranged at the top of the casing of the ducted air conditioner, so that air can be sucked into the ceiling through the first air opening in the front side of the ceiling and air can be effectively returned through the first air return opening in the top of the casing, thereby effectively avoiding the condition of unattractive appearance caused by the fact that the air return opening is formed below the ceiling, solving the problem of inconvenient maintenance of installation and disassembly below the ceiling, maintaining the front side of the ceiling, realizing that a unit does not need a lower maintenance opening, maintaining the front side, and being more convenient and more beautiful in appearance; the user can also effectively utilize the space below the suspended ceiling; the invention also has the advantages that through the structure that the top, the front end and the rear end of the shell are provided with the air return inlets, the air return area can be effectively increased, the air return quantity is increased, and the heat exchange efficiency is improved.

2. The air outlets are respectively arranged in the two directions of the lower part and the front end of the shell, so that the effects of horizontal air outlet in refrigeration and air supply in heating can be effectively realized, and the operation comfort degree in the heating and refrigerating modes is effectively improved; the air outlet direction can be changed through the movement of the moving part, so that the horizontal air outlet, the vertical air outlet and the horizontal and vertical simultaneous air outlet are realized, and the air conditioner is respectively suitable for refrigeration, heating and the conditions of required rapid refrigeration or heating.

Drawings

Fig. 1 is a schematic internal structural view of an air duct machine in an embodiment 1 of a distributed air supply apparatus according to the present invention;

fig. 2 is a schematic internal structural view of an air duct machine in an embodiment 2 of the distributed air supply apparatus according to the present invention;

FIG. 3 is a schematic view of an internal cross-section of the distributed air supply apparatus of the present invention in a cooling upper air-out mode;

FIG. 4 is a schematic cross-sectional view of the distributed air supply apparatus of the present invention in an air-out mode under heating;

FIG. 5 is a schematic cross-sectional view of the distributed air supply apparatus of the present invention in the vertical simultaneous air-out mode;

FIG. 6 is a schematic view of the air outlet and return structure of the distributed air supply device of the present invention;

FIG. 7 is a perspective view of the ducted air conditioner of the present invention;

fig. 8 is a schematic internal configuration diagram of an air duct machine according to embodiment 3 of the distributed blowing apparatus of the present invention.

The reference numerals are represented as:

1. a housing; 1a, a top; 1b, front end; 1c, a rear end; 2. a fan; 3. a heat exchanger; 41. a first air return opening; 42. a second air return inlet; 43. a third air return inlet; 51. a first air outlet; 52. a second air outlet; 6. an air outlet channel; 61. a first air outlet channel; 62. a second air outlet channel; 7. a ducted air conditioner; 8. A suspended ceiling; 81. a first tuyere; 82. a second tuyere; 83. a third tuyere; 91. a first connection portion; 92. A second connecting portion; 10. a volute; 11. a first return air channel; 12. a moving part; 13. a volute tongue; 141. A first access opening; 142. a second access opening; 15. a notch; 16. a water pan.

Detailed Description

Referring to fig. 1 to 8, the present invention provides a distributed air supply device, which includes a ducted air conditioner 7 and a suspended ceiling 8, wherein the ducted air conditioner 7 is disposed inside the suspended ceiling 8, a first air opening 81 is disposed on a front side of the suspended ceiling 8, and the front side is opposite to a wall and connected to the ceiling;

the tuber pipe machine includes: the air conditioner comprises a machine shell 1, a fan 2, a heat exchanger 3 and a first air return opening 41, wherein the first air return opening 41 is arranged at the top 1a of the machine shell 1, and the first air return opening 41 can be communicated with a first air opening 81 to suck air from the first air opening 81, so that air flow is driven by the fan 2 to enter the machine shell 1 through the first air opening 81 and the first air return opening 41 in sequence and exchange heat through the heat exchanger 3.

According to the invention, the first air opening is formed in the front side of the ceiling on which the ducted air conditioner is installed, and the first air return opening of the ducted air conditioner is arranged at the top of the casing of the ducted air conditioner, so that air can be sucked into the ceiling through the first air opening in the front side of the ceiling and air can be effectively returned through the first air return opening in the top of the casing, thereby effectively avoiding the condition of unattractive appearance caused by the fact that the air return opening is formed below the ceiling, solving the problem of inconvenient maintenance of installation and disassembly below the ceiling, maintaining the front side of the ceiling, realizing that a unit does not need a lower maintenance opening, maintaining the front side, and being more convenient and more beautiful in appearance; the user can also effectively utilize the space below the suspended ceiling; the invention also has the advantages that through the structure that the top, the front end and the rear end of the shell are provided with the air return inlets, the air return area can be effectively increased, the air return quantity is increased, and the heat exchange efficiency is improved.

As shown in fig. 1, fig. 2, and fig. 3, a distributed air duct machine for returning air includes a heat exchanger component, a fan, a baffle, an air outlet, an air return opening, and the like. Preferably, the unit housing has at least a front, a top and a rear return air duct.

The tuber pipe machine uses the furred ceiling installation, and this novel scheme unit can adopt front side furred ceiling air-out and return air, specifically, furred ceiling front side play style bars length is greater than the unit air outlet. When the unit works, air enters the ceiling from the ceiling grid at the front side, then enters the unit from the air inlet holes arranged at the front side, the top and the back of the unit, and is discharged by the fan through the heat exchanger.

Example 2, as shown in fig. 2, in some embodiments, the front end 1b of the casing 1 is further provided with a second air return opening 42, the front end of the casing 1 is opposite to the front side of the suspended ceiling 8, the second air return opening 42 can be communicated with the first air opening 81 so as to allow air to be sucked into the casing 1 from the second air return opening 42, and the heat exchanger 3 is spaced from the top of the casing 1 by a predetermined distance. The invention also has the advantages that the air return area can be effectively increased, the air return quantity is increased and the heat exchange efficiency is improved through the structure that the air return opening is formed in the front end of the shell. In the embodiment 2 of the invention, the preset interval is formed between the upper end of the heat exchanger and the shell, so that the airflow entering the second air return inlet can reach the heat exchanger through the interval to exchange heat, and the air inlet quantity is increased.

Example 1, in some embodiments, the heat exchanger 3 is attached to the upper end of the cabinet 1 such that the front end of the cabinet 1 is not provided with the second air return opening 42. This is the preferred structure form of embodiment 1 of the present invention, that is, the upper end of the heat exchanger is connected to the casing, and at this time, air cannot be returned to the heat exchanger from the front end of the casing effectively, so that air enters the interior of the suspended ceiling from the first air inlet of the suspended ceiling and only reaches the first air return opening at the top and the third air return opening at the rear end for air return.

In some embodiments, the rear end 1c of the casing 1 is further provided with a third air return opening 43, the rear end of the casing 1 is opposite to the front side of the suspended ceiling 8, the rear end of the casing 1 is opposite to a wall, and the third air return opening 43 can also be communicated with the first air return opening 81 so as to be capable of sucking air from the third air return opening 43 into the casing 1. The invention also has the advantages that the air return area can be further effectively increased, the air return quantity is increased, and the heat exchange efficiency is improved through the structure that the air return opening is formed in the rear end of the shell.

In some embodiments, the first air return opening 41 is spaced apart from the ceiling by a first predetermined distance, the second air return opening 42 is spaced apart from the front side of the suspended ceiling 8 by a second predetermined distance, the third air return opening 43 is spaced apart from the wall by a third predetermined distance, and the airflow enters the interior of the suspended ceiling 8 through the first air opening 81 and sequentially reaches the second air return opening 42, the first air return opening 41 and the third air return opening 43. The first air return opening, the second air return opening and the third air return opening are in the optimal structure, a channel for air flow circulation can be formed between the first air return opening at the top of the machine shell and a ceiling through the first preset distance, so that wind energy entering the ceiling from the first air return opening can enter the first air return opening, the second preset distance can ensure that the first air return opening and the ceiling are not directly communicated, the space inside the ceiling is filled with the wind entering the ceiling from the first air return opening, and the air return amount can be effectively increased; the third is predetermine the setting of distance and can be made the rear end of casing and form the circulation passageway that supplies the third return air inlet between the wall to effectively increase the amount of return air.

In some embodiments, a second air opening 82 is further disposed on the front side of the suspended ceiling 8, a first air outlet 51 is further disposed at the front end of the housing 1, the front end of the housing 1 is opposite to the front side of the suspended ceiling 8, the first air outlet 51 can be communicated with the second air opening 82, so that air after heat exchange by the heat exchanger 3 can be blown out through the first air outlet 51 and the second air opening 82 in sequence, and the first air opening 81 and the second air opening 82 are disposed at intervals in a horizontal direction and/or a vertical direction. The second air opening arranged on the front side of the suspended ceiling can be connected with the first air outlet on the front end of the machine shell, so that the air blown out from the first air outlet by the machine shell is blown out from the second air opening on the front side of the suspended ceiling, the horizontal air supply effect is realized, the horizontal air supply effect is used for horizontal air supply in a refrigeration mode, the second air opening is used for air outlet, and an interval is formed between the second air opening and the first air opening for air return, so that the air outlet airflow is effectively prevented from flowing back to the air return opening.

In some embodiments, a third air outlet 83 is further disposed at the lower side of the suspended ceiling 8, and a second air outlet 52 is further disposed at the lower end of the casing 1, so that the air after heat exchange by the heat exchanger 3 can be blown out through the second air outlet 52 and the third air outlet 83 in sequence. The air conditioner also can be communicated with the second air outlet at the lower end of the shell through the arrangement of the third air port, so that the downward air outlet effect is realized, and the air conditioner is used for downward air supply in the heating mode.

In some embodiments, when the second air return opening 42 is further included:

the distributed air supply device further comprises a volute 10, a first air return channel 11 is defined between the upper side of the volute 10 and the machine shell 1, and the second air return opening 42 is communicated with the first air return channel 11 so as to enable air to be sucked into the first air return channel through the second air return opening 42 and reach the heat exchanger 3 through the first air return channel; an air outlet channel 6 is defined below the scroll casing 10, the air outlet channel 6 includes a first air outlet channel 61 and a second air outlet channel 62, the first air outlet channel 61 is communicated with the first air outlet 51, and the second air outlet channel 62 is communicated with the second air outlet 52.

The first air outlet channel is communicated with the first air outlet in the horizontal direction, the second air outlet channel is communicated with the second air outlet facing downwards, and horizontal air outlet and lower air outlet can be respectively and simultaneously realized.

In some embodiments, the air outlet channel 6 is further provided with a moving part 12, the ducted air conditioner 7 further comprises a volute tongue 13, the moving component 12 can rotate to a position where one end of the moving component is connected to the scroll casing 10 to close the first air outlet channel 61 and open the second air outlet channel 62 (as shown in a position B in fig. 4, downward air outlet can be realized, and the moving component is suitable for heating conditions), the moving part 12 can rotate to a position where one end thereof is connected with the volute tongue 13 to close the second air outlet channel 62 and open the first air outlet channel 61 (as shown in a position a in fig. 3, horizontal air outlet can be realized, and the air conditioner is suitable for a refrigeration working condition), the moving component 12 can also rotate to a position C where one end of the moving component 12 is neither connected to the volute tongue 13 nor the volute 10, so as to open the first outlet channel 61 and the second outlet channel 62 simultaneously. According to the invention, the first air outlet channel can be effectively opened and the second air outlet channel can be closed through the arrangement of the moving part, so that air outlet in the horizontal direction is realized, and the air-conditioner is suitable for the refrigeration working condition; the second air outlet channel can be opened to close the first air outlet channel so as to realize downward air outlet, and the air conditioner is suitable for heating working conditions; can also open first air-out passageway and second air-out passageway simultaneously to realize down and the horizontal air-out simultaneously, be applicable to the operating mode that needs quick refrigeration or heat.

Preferably, the positions A and B are arranged on the upper volute air duct and the lower volute tongue air duct of the unit, and the baffle rotates around the point O between the circular arcs AB. The baffle can stay at any point in the AB arc as required.

Preferably, the air outlet is arranged in the air outlet direction of the unit, and the air outlet is provided with at least 2 air outlets by changing the air flow direction through the movable baffle.

Preferably, the air outlet is arranged in the horizontal direction and the vertical direction.

Preferably, the unit adopts cross-flow blades, and the blades are arranged in front of and/or above the heat exchanger along the airflow direction.

Preferably, in the heating mode, the baffle rotates to a point A of the air duct wall, and the unit supplies air downwards.

Preferably, in the refrigeration mode, the baffle rotates to a point B of the air duct wall, and the unit supplies air horizontally.

Preferably, in the air supply, cooling and heating modes, the baffle rotates at any position between the two AB, and wide-area air supply is realized.

As shown in fig. 4, 5 and 6, the air flow distribution of the unit using the ceiling return air is schematically illustrated.

Preferably, the moving part is in the form of a baffle, and the baffle can also be formed by combining a baffle I and a baffle I into a whole, such as an L shape.

As above novel tuber pipe machine can realize whole front air-out and return air, and the unit refrigeration is heated and is distributed the air supply, accords with human travelling comfort and experiences, has advantages such as the outward appearance is pleasing to the eye, the practicality is strong.

In some embodiments, the fan 2 is a cross-flow fan blade; and/or the first air outlet 51 is connected with the second air outlet 82 through a first connecting portion 91, the second air outlet 52 is connected with the third air outlet 83 through a second connecting portion 92, and a preset gap is formed between the first air outlet 81 and the machine case 1. The first connecting part and the second connecting part can respectively realize effective sealing connection between the first air outlet and the ceiling and between the second air outlet and the ceiling, and the outlet air is directly blown out of the ceiling and is prevented from being mixed with return air in the ceiling.

Preferably, the unit returns air through partial grids outside the air outlet, and the area of the grids installed in engineering is larger than that of the outlet air.

Preferably, the horizontal air outlet and the lower air outlet of the unit are hermetically connected with the suspended ceiling through flexible materials (such as canvas).

In some embodiments, an engineering maintenance opening for maintenance is opened on the front side of the suspended ceiling 8, the front end of the casing 1 of the ducted air conditioner 7 is further provided with a first access opening 141, and a second access opening 142 is further provided on a side surface of the casing 1, and the side surface and the front end are two surfaces which are connected. According to the invention, the first air inlet of the return air is arranged on the front side of the suspended ceiling, so that the effect of opening the interior of the suspended ceiling on the front side to maintain the ducted air conditioner can be realized, the maintenance and the disassembly are more convenient and quicker, the maintenance openings are arranged on two surfaces of the ducted air conditioner, the effective operation of the two maintenance openings of the ducted air conditioner can be realized, and the maintenance is realized.

Fig. 7 is a schematic view of a unit service hole.

Preferably, the assembly comprises at least one removable part on the front and on the side for engineering maintenance. The air inlet grille on the front surface of the suspended ceiling is larger, and the unit can be detached from the front surface.

Example 3, as shown in fig. 8, in some embodiments, the distributed air supply apparatus further includes a volute 10, a portion of the front end of the casing 1 opposite to the first air port 81 forms a notch 15, the notch 15 extends to a set position of an upper end of the volute 10, the set position is close to the heat exchanger 3 relative to the front side of the casing 1, so that a portion of the volute 10 is exposed outside, so that a second air return port 42 is formed between the upper end of the casing 1 and the volute 10, and the second air return port 42 can communicate with the first air port 81 for returning air. In the embodiment 3 of the invention, the front end of the casing is processed into the notch, so that the whole notch can be effectively used for air return, the air return area can be increased, and the air return quantity is increased.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A distributed air supply device is characterized in that: the air duct type air conditioner comprises an air duct machine (7) and a ceiling (8), wherein the air duct machine (7) is arranged inside the ceiling (8), a first air opening (81) is formed in the front side of the ceiling (8), and the front side is opposite to a wall and connected with the ceiling;

the tuber pipe machine includes: the heat exchanger comprises a machine shell (1), a fan (2), a heat exchanger (3) and a first air return opening (41), wherein the first air return opening (41) is formed in the top of the machine shell (1), the first air return opening (41) can be communicated with the first air opening (81) to suck air from the first air opening (81), so that air flow is driven by the fan (2) to sequentially enter the machine shell (1) through the first air opening (81) and the first air return opening (41) and passes through the heat exchanger (3) for heat exchange.

2. The distributed air supply apparatus of claim 1, wherein:

the front end of the machine shell (1) is further provided with a second air return opening (42), the front end of the machine shell (1) is opposite to the front side of the suspended ceiling (8), the second air return opening (42) can be communicated with the first air opening (81) to enable the second air return opening (42) to suck air to enter the machine shell (1), and a preset interval exists between the heat exchanger (3) and the top of the machine shell (1).

3. The distributed air supply apparatus of claim 1, wherein:

the heat exchanger (3) is connected with the upper end of the machine shell (1), so that a second air return opening (42) is not arranged at the front end of the machine shell (1).

4. The distributed air supply apparatus of claim 2, wherein:

the rear end of casing (1) still is provided with third return air inlet (43), the rear end of casing (1) with the front side of furred ceiling (8) is carried on the back mutually, the rear end of casing (1) is relative with the wall, third return air inlet (43) also can with first wind gap (81) intercommunication is in order can follow third return air inlet (43) induced drafts and gets into in casing (1).

5. The distributed air supply apparatus of claim 4, wherein:

the first air return opening (41) is spaced from the ceiling by a first preset distance, the second air return opening (42) is spaced from the front side of the suspended ceiling (8) by a second preset distance, the third air return opening (43) is spaced from the wall by a third preset distance, and air flow enters the suspended ceiling (8) through the first air opening (81) and sequentially reaches the second air return opening (42), the first air return opening (41) and the third air return opening (43).

6. The distributed air supply apparatus of any of claims 1-5, wherein:

the front side of furred ceiling (8) still is provided with second wind gap (82), the front end of casing (1) still is provided with first air outlet (51), the front end of casing (1) with the front side of furred ceiling (8) is relative, first air outlet (51) can with second wind gap (82) intercommunication makes the process air behind heat exchanger (3) heat transfer can pass through in proper order first air outlet (51) with second wind gap (82) blow off, first wind gap (81) with second wind gap (82) set up at horizontal direction and/or vertical direction interval.

7. The distributed air supply apparatus of claim 6, wherein:

the lower side of the suspended ceiling (8) is further provided with a third air port (83), and the lower end of the machine shell (1) is further provided with a second air outlet (52), so that air subjected to heat exchange by the heat exchanger (3) can sequentially pass through the second air outlet (52) and the third air port (83) to be blown out.

8. The distributed air supply apparatus of claim 7, wherein:

when a second return air opening (42) is further included:

the distributed air supply device further comprises a volute (10), a first air return channel (11) is defined between the upper side of the volute (10) and the machine shell (1), and the second air return opening (42) is communicated with the first air return channel (11) so as to enable air suction to enter the first air return channel through the second air return opening (42) and reach the heat exchanger (3) through the first air return channel; an air outlet channel (6) is defined below the volute (10), the air outlet channel (6) comprises a first air outlet channel (61) and a second air outlet channel (62), the first air outlet channel (61) is communicated with the first air outlet (51), and the second air outlet channel (62) is communicated with the second air outlet (52).

9. The distributed air supply apparatus of claim 8, wherein:

the air outlet channel (6) is further provided with a moving component (12), the air pipe machine (7) further comprises a volute tongue (13), the moving component (12) can rotate until one end of the moving component is connected with the volute (10) to close the first air outlet channel (61) and open the second air outlet channel (62), the moving component (12) can rotate until one end of the moving component is connected with the volute tongue (13) to close the second air outlet channel (62) and open the first air outlet channel (61), the moving component (12) can also rotate until one end of the moving component is located at a C position, when the moving component is located at the C position, one end of the moving component (12) is not connected with the volute tongue (13) or the volute (10), and the first air outlet channel (61) and the second air outlet channel (62) are opened simultaneously.

10. The distributed air supply apparatus of claim 7, wherein:

the fan (2) is a cross-flow fan blade; and/or the first air outlet (51) is connected with the second air inlet (82) through a first connecting part (91), the second air outlet (52) is connected with the third air inlet (83) through a second connecting part (92), and a preset gap is formed between the first air inlet (81) and the machine shell (1).

11. The distributed air supply apparatus of claim 2, wherein:

furred ceiling (8) the front side is opened and is equipped with the engineering maintenance mouth that is used for the maintenance, tuber pipe machine (7) casing (1) the front end still is provided with first access hole (141), the side of casing (1) still sets up second access hole (142), the side with two faces that the front end is for meeting.

12. The distributed air supply apparatus of any of claims 1-11, wherein:

the distributed air supply device further comprises a volute (10), a notch (15) is formed in the part, opposite to the first air opening (81), of the front end of the machine shell (1), the notch (15) extends to a set position of the upper end of the volute (10), the set position is close to the heat exchanger (3) relative to the front side of the machine shell (1), so that part of the volute (10) is exposed outside, a second air return opening (42) is formed between the upper end of the machine shell (1) and the volute (10), and the second air return opening (42) can be communicated with the first air opening (81) for returning air.

13. An air conditioner, characterized in that: comprising a distributed air supply arrangement as claimed in any of claims 1-12.