CN215705539U

CN215705539U - Parking air conditioner

Info

Publication number: CN215705539U
Application number: CN202121462881.0U
Authority: CN
Inventors: 王晓斌; 谷培信; 赵磊; 司传岭
Original assignee: Qingdao Hisense Network Energy Co ltd
Current assignee: Qingdao Hisense Network Energy Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-02-01
Anticipated expiration: 2031-06-29

Abstract

The utility model provides a parking air conditioner which comprises a housing, a base, a condenser, a fan cover and a condensing fan, wherein the base and the housing jointly define an accommodating space and is provided with a bottom plate and a circular side wall; a first outer air return inlet is formed in the bottom plate, and a second outer air return inlet, a third outer air return inlet and a fourth outer air return inlet are formed in the side wall of the ring; the condenser corresponds to the first external air return inlet, and an air return channel is arranged between the condenser and the bottom plate; the first outer air return inlet, the second outer air return inlet, the third outer air return inlet and the fourth outer air return inlet are communicated with the air return channel and are respectively arranged at different directions of the condenser; the fan cover and the base define a second fan cavity; an air outlet communicated with the opening on the housing is formed on the fan housing; the outdoor unit of the parking air conditioner has large return air volume and high heat exchange efficiency, effectively improves the integral air supply performance of the parking air conditioner, and improves the user experience.

Description

Parking air conditioner

Technical Field

The utility model belongs to the technical field of vehicle-mounted air conditioners, and particularly relates to a parking air conditioner.

Background

The parking air conditioner is an air conditioner used during parking waiting and rest, is usually installed on trucks and vans, and can be used by drivers in long-distance driving. With the continuous improvement of the requirement of people on driving comfort, the automobile air conditioner becomes one of necessary devices of an automobile cab, and people hope that the automobile air conditioner can quickly achieve the heat exchange effect.

The utility model is provided in view of the above.

Disclosure of Invention

The utility model provides a parking air conditioner aiming at the technical problem.

In order to achieve the purpose, the utility model adopts the technical scheme that:

parking air conditioner, it includes:

a housing having an opening formed therein;

the base and the housing jointly define an accommodating space; the base comprises a bottom plate and a ring side wall arranged around the edge of the bottom plate; a first outer air return inlet is formed in the bottom plate, and a second outer air return inlet, a third outer air return inlet and a fourth outer air return inlet are formed in the side wall of the ring;

the condenser is fixed in the accommodating space and corresponds to the first outer air return inlet in position; an air return channel is arranged between the condenser and the bottom plate; the first outer air return inlet, the second outer air return inlet, the third outer air return inlet and the fourth outer air return inlet are communicated with the air return channel and are respectively arranged in different directions of the condenser;

the fan cover is arranged on one side, far away from the bottom plate, of the condenser and defines a second fan cavity with the base; an air outlet communicated with the opening on the housing is formed on the fan housing;

the condensation fan is fixed in the second fan cavity;

and when the condensing fan operates, outside air enters the air return channel through the first outer air return inlet, the second outer air return inlet, the third outer air return inlet and the fourth outer air return inlet, and then is discharged from the outer air outlet after passing through the condenser and the second fan cavity.

As an implementable manner, the base is provided with an electrical box and a compressor; along the width direction of the car, electrical box and compressor are separated in the opposite sides of condenser.

As an implementable manner, the electrical box is located between the condenser and the third external air return inlet, and the bottom of the electrical box and the bottom plate jointly define a first air flow channel; the first air flow channel is communicated with the third outer air return inlet and the air return channel.

As an implementation manner, the compressor is located between the condenser and the fourth external air return inlet, and the bottom of the compressor and the bottom plate jointly define a second air flow channel; the second air flow channel is communicated with the fourth outer air return inlet and the air return channel.

As a practical matter, the bottom of the condenser and the base plate together define a return air channel.

As an implementable manner, the dimension of the air return channel is recorded as D in the direction perpendicular to the plane of the first external air return inlet₁，D₁∈[40，60]The unit: mm.

As an implementable manner, a distance between the condensing fan and the condenser is recorded as D in a direction perpendicular to a plane where the first external air return inlet is located₂，D₂∈[40，70]The unit: mm.

As an implementation mode, an inner air inlet and an inner air outlet which are communicated with the interior of the vehicle are formed on the bottom plate;

the bottom plate is provided with a heat-insulating cover, and the heat-insulating cover and the bottom plate jointly define a cooling chamber communicated with the inner air inlet and the inner air outlet; an evaporator and a first fan cavity which is communicated with the inner air outlet and the cooling chamber are arranged in the cooling chamber; and a cross-flow fan is arranged in the first fan cavity.

As a practical manner, the roof portion is formed with an opening; an inner shell used for penetrating the opening of the roof part is arranged on the lower side of the base; and a return air channel is formed in the inner shell;

the inner shell comprises a panel positioned at the lower end of the inner shell and a side shell plate arranged around the edge of the panel; and a first inner return air inlet communicated with the return air channel is formed on the panel, and a second inner return air inlet communicated with the return air channel is formed on the side shell plate.

As an implementation mode, an air outlet channel which is communicated with the inner air outlet and extends into the inner cavity of the inner shell is arranged on the lower side of the base; an air supply outlet communicated with the interior of the vehicle and the air outlet channel is arranged on the inner shell;

when the cross-flow fan operates, the air flow in the vehicle sequentially passes through the first inner return air inlet, the second inner return air inlet, the return air duct, the inner air inlet, the cooling chamber, the inner air outlet, the air outlet channel and the air supply outlet, and the low-temperature air flow passing through the evaporator in the cooling chamber enters the vehicle from the air supply outlet.

Compared with the prior art, the utility model has the advantages and positive effects that:

Drawings

FIG. 1 is a schematic view of the overall structure of a parking air conditioner according to the present invention;

FIG. 2 is an exploded view of the parking air conditioner of the present invention;

FIG. 3 is an exploded view of the internal structure of the parking air conditioner of the present invention;

FIG. 4 is a schematic structural view of another perspective of the parking air conditioner of the present invention;

FIG. 5 is a schematic structural view of another perspective of the parking air conditioner of the present invention;

FIG. 6 is a schematic structural view of another perspective of the parking air conditioner of the present invention;

FIG. 7 is a schematic structural diagram of a base of the parking air conditioner of the present invention;

FIG. 8 is a structural diagram of another view angle of the base of the parking air conditioner of the present invention;

fig. 9 is a schematic view illustrating the flow of air in the indoor unit and the outdoor unit of the parking air conditioner according to the present invention;

fig. 10 is an airflow flow diagram of an outdoor unit of a parking air conditioner according to the present invention;

fig. 11 is an airflow flow diagram of an outdoor unit of another view angle of the parking air conditioner of the present invention.

In the above figures: a housing 1; an accommodating space 10; a compressor 11; an electronic control box 12; a heat-insulating cover 13; a cooling chamber 14; a baffle 16; a volute 17; an evaporator 19; a base 2; a base plate 20; an inner air inlet 21; an inner air outlet 22; a first side plate 23; a second side plate 24; a third side panel 25; a first outer return air inlet 31; a second outer return air inlet 32; a third outer return air inlet 33; a fourth outer return air inlet 34; the first air flow passage 51; a second airflow passage 52; a cross-flow fan 3; an air outlet channel 5; an air supply outlet 6; an air return channel 8; a return air passage 9; an inner casing 7; a panel 71; a side casing plate 72; a first inner return air inlet 73; a second inner return air opening 74; an air deflector 75; the wind sweeping blades 76; an air return grille 77; a condenser 61; a condensing fan 62; a second fan motor 63; a fan guard 64; an outlet air port 66.

Detailed Description

The present invention is further described below in conjunction with specific examples to enable those skilled in the art to better understand the present invention and to practice it, but the scope of the present invention as claimed is not limited to the scope described in the specific embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are 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 at least one such feature.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 11, a parking air conditioner includes a base 2 and a cover 1, the base 2 is fixed to a roof of a vehicle, and the cover 1 is fixed to the base 2 to form an accommodating space 10. The accommodating space 10 is provided therein with a compressor 11, an indoor unit, an outdoor unit, and an electric control box 12 for controlling the parking air conditioner. In this embodiment, the indoor unit is disposed on one side of the outdoor unit close to the vehicle head, and the compressor 11 and the electric control box 12 are disposed on two opposite sides of the outdoor unit.

Specifically, the top of the vehicle is provided with an opening, and the base 2 is fixed on the outer side of the top of the vehicle, so that the parking air conditioner does not occupy the space in the vehicle, is not easy to interfere with other parts on the vehicle, and is convenient to mount. Specifically, the size of the base 2 is larger than the size of the opening of the top of the vehicle; the parking air conditioner includes an inner case 7 provided on the lower side of the base 2, the inner case 7 passing through an opening of the roof of the vehicle. The sponge is arranged between the base 2 and the roof, so that on one hand, the sponge can enable the base 2 to be in sealed connection with the roof, and the indoor space and the outdoor space are effectively isolated; on the other hand, the sponge can effectively absorb shock.

The indoor unit comprises an evaporator 19, a cross flow fan 3 for sending cooling air flow passing through the evaporator 19 to the interior of the vehicle, a first fan motor for driving the cross flow fan 3, and a water pan positioned at the lower part of the evaporator 19.

Be equipped with interior air intake 21 and interior air outlet 22 on the base 2, be equipped with in the accommodation space 10 and be fixed in the heat preservation cover 13 on the base 2, can effectively avoid the condensation, reduce the cold volume loss that heat exchange leads to. Wherein, the heat preservation cover 13 and the base 2 jointly define a cooling chamber 14 which is communicated with an inner air inlet 21 and an inner air outlet 22 on the base 2. In this embodiment, the inner air inlet 21 and the inner air outlet 22 are disposed in parallel, and the inner air outlet 22 is located on one side of the inner air inlet 21 close to the vehicle head.

The base 2 is provided with a fan base, and the cross-flow fan 3 is arranged on the fan base and driven by a first fan motor. A deflector 16 is formed on the blower base to deflect the airflow. A volute 17 is arranged in the cooling chamber 14, and the volute 17 and the fan mounting seat define a first fan cavity communicated with the inner air outlet 22. The airflow driven by the crossflow blower 3 exits through the baffle 16 and flows along the first blower chamber.

A communication port communicated with the cooling chamber 14 is formed on the first fan cavity; the evaporator 19 is disposed in the cooling chamber 14 and shields the communication port of the first fan chamber, so that air passes through the evaporator 19 and then enters the first fan chamber. The cross-flow fan 3 and the evaporator 19 are arranged in parallel, and the lengths of the cross-flow fan 3 and the evaporator 19 are consistent, so that the wind speed at each position of the evaporator 19 is uniform, and the heat exchange capacity of the evaporator 19 is fully utilized. In the present embodiment, the evaporator 19 is provided as a multi-row fin evaporator 19. The cross-flow fan 3 works, negative pressure is formed in the cooling chamber 14, airflow enters the cooling chamber 14 from the inner air inlet 21, then passes through the evaporator 19, the cross-flow fan 3 and the inner air outlet 22 in sequence, and is discharged out of the cooling chamber 14 from the inner air outlet 22.

The lower part of the base 2 is provided with an air outlet channel 5 which is communicated with the inner air outlet 22 and extends downwards to the inner shell 7, and the inner shell 7 is provided with an air supply outlet 6 which is communicated with the interior of the vehicle and the air outlet channel 5. The cooling air flow which flows out from the inner air outlet 22 on the base 2 through the cooling chamber 14 is guided into the vehicle through the air outlet channel 5 and the air outlet 6. The air outlet duct is limited by the air outlet duct foam, so that the air outlet temperature is effectively ensured, and condensation is prevented.

The inner shell 7 is internally provided with a return air channel 8 communicated with the inner air inlet 21 on the base 2, and the inner shell 7 is provided with a first inner return air inlet 73 and a second inner return air inlet 74 which are communicated with the return air channel 8 and the interior of the vehicle. The air in the vehicle enters the air return channel 8 through the first inner air return opening 73 and the second inner air return opening 74, flows to the inner air inlet 21 on the base 2 along the air return channel 8, then enters the cooling chamber 14 through the inner air inlet 21 and is cooled by the evaporator 19; the cooling air flow cooled by the evaporator 19 passes through the inner air outlet 22, the air outlet channel 5 and the air supply outlet 6 in sequence, and is discharged into the vehicle through the air supply outlet 6, so that the cooling air flow circulates to reduce the temperature in the vehicle. In this embodiment, the air return channel 8 is defined by the air duct wall of the air outlet channel 5 and the shell wall of the inner shell 7, and the air return channel 8 and the air outlet channel 5 are arranged in parallel. In addition, a detachable filter screen for filtering air is arranged in the return air channel 8, so that the heat exchange performance reduction caused by excessive dust accumulated on the evaporator 19 of the parking air conditioner is effectively prevented.

As shown in fig. 9, the first inner air return opening 73 and the second inner air return opening 74, the air return channel 8, the inner air inlet 21, the cooling chamber 14, the inner air outlet 22, the air outlet channel 5, and the air supply opening 6 are sequentially communicated to form a cooling air duct. One end of the cooling air duct is communicated with the interior of the vehicle through the internal air return opening, and the other end of the cooling air duct is communicated with the interior of the vehicle through the air supply opening 6, so that the air in the vehicle sequentially passes through the internal air return opening, the cooling air duct and the air supply opening 6 and then returns to the interior of the vehicle, and the air in the vehicle is cooled by circulation.

In this embodiment, the inner casing 7 includes a face plate 71 at a lower end thereof and a side casing plate 72 disposed around an edge of the face plate 71. The air supply outlet 6 is formed on the panel 71; the first inner return air opening 73 is formed in the panel 71, and the second inner return air opening 74 is formed in the side casing 72, so that the vehicle interior air enters the return air duct 8 from two directions, increasing the return air volume of the vehicle interior air. As an arrangement, the first inner return air inlet 73 is located on the side of the panel 71 away from the air supply outlet 6, and the second inner return air inlet 74 is located on the side casing plate 72 away from the air supply outlet 6; the above arrangement can effectively avoid airflow disorder.

In this embodiment, return air grilles 77 are formed at both the first inner return air inlet 73 and the second inner return air inlet 74; in this embodiment, the return air grille is formed in a louver shape. The return air grille 77 corresponding to the first inner return air inlet 73 is set in an inclined louver shape to guide the air flow passing through the inner return air inlet, so as to avoid the influence on the environmental refrigeration effect caused by the short circuit of cold air and hot air caused by vertical return air. And the visual aesthetic feeling of installation is improved, and the interior decoration of the car body is prevented from being exposed. Of course, the return air grille 77 at the first inner return air opening 73 is not limited to be provided with a slanted louver shape, and may take other forms such as a flat opening.

In addition, an air deflector 75 is arranged at the air supply outlet 6, and the rotating shaft of the air deflector 75 is parallel to the rotating shaft of the cross flow fan 3; the air deflector 75 can rectify the air flow at the air supply opening 6 and then guide the air flow into the vehicle. The air deflector 75 is connected with a first driving motor to adjust the opening angle of the air deflector 75, so that the vertical air supply angle is adjusted. In addition, a wind sweeping mechanism is provided at the air blowing port 6, and includes a wind sweeping link parallel to the rotation axis of the air guide plate 75, a plurality of wind sweeping blades 76 connected to the wind sweeping link, and a second driving motor for driving the wind sweeping link. The second driving motor drives the wind sweeping connecting rod to reciprocate along the rotating shaft direction of the air deflector 75, so as to drive the wind sweeping blade 76 to swing transversely. In this embodiment, the second driving motor automatically adjusts the transverse air supply angle of the second air guiding blade to form large-angle air supply. The arrangement of the air deflector 75 and the air sweeping mechanism can guide the flow of the outlet air to the maximum extent, effectively improve the air flow circulation efficiency in the vehicle and improve the environmental refrigeration effect.

The outdoor unit includes a condenser 61, a condensing fan 62 for sending out the hot air passing through the condenser 61 out of the accommodating space 10, and a second fan motor 63 driving the condensing fan 62. In the present embodiment, the condenser 61 is provided as a microchannel condenser. In this embodiment, the condensing fan 62 is an axial fan, which has a large air volume and a low noise.

The base 2 is provided with a first external air return inlet 31, the condenser 61 corresponds to the first external air return inlet 31, and one side of the condenser 61 close to the base 2 is provided with an air return channel 9 communicated with the first external air return inlet 31.

A fan cover 64 is arranged on one side of the condenser 61 far away from the first outer air return inlet 31, and the condensing fan 62 is fixed in the fan cover 64. Specifically, a second fan cavity recessed to a side away from the condenser 61 is formed on the fan cover 64; and the housing 1 of the parking air conditioner is provided with an opening corresponding to the second fan cavity. Wherein, the bottom of the second fan cavity is provided with a fan mounting seat for fixing the condensing fan 62 and an air outlet 66 surrounding the fan mounting seat. The condensing fan 62 is mounted on the fan mounting base and is accommodated in the second fan chamber. In this embodiment, go out air outlet 66 department and be equipped with outer air-out grid, be formed with a plurality of grid wind gaps on the outer air-out grid, the grid wind gap sets up the structure into the streamline formula fillet, can reduce the windage, improves the air output.

Along the direction of the rotating shaft of the cross flow fan 3, the electric control box 12, the outdoor unit and the compressor 11 are sequentially arranged adjacently; that is, the electronic control box 12 and the compressor 11 are disposed on opposite sides of the outdoor unit in the direction of the rotation axis of the cross flow fan 3. The bottom of the electronic control box 12 and the base 2 jointly define a first air flow passage 51, and the compressor 11 and the base 2 jointly define a second air flow passage 52.

Referring to fig. 7-8, as shown in fig. 9-11, the base 2 includes a bottom plate 20, a ring-shaped sidewall disposed around the edge of the bottom plate 20; the annular side walls include a first side plate 23 located at the end of the vehicle close to the rear end thereof, a second side plate 24 located at the side of the electronic control box 12 away from the compressor 11, and a third side plate 25 located at the side of the compressor 11 away from the electronic control box 12. A second external air return inlet 32 is arranged on the first side plate 23, a third external air return inlet 33 corresponding to the position of the electric control box 12 is arranged on the second side plate 24, and a fourth external air return inlet 34 corresponding to the position of the compressor 11 is arranged on the third side plate 25.

In this embodiment, the bottom of the condenser 61 and the bottom plate 20 together define the return air passage 9.

As another practical way, a surrounding plate surrounding the first external air return opening 31 is provided on the base 2, and the surrounding plate and the first side plate 23 of the base 2 together define the air return channel 9. Under the driving action of the condensing fan 62, the air outside the vehicle enters the return air channel 9 from the first external air return opening 31, passes through the condenser 61 and then is guided to the outside of the vehicle from the external air outlet opening 66, so as to effectively take away the heat on the condenser 61. In this embodiment, the condensing fan 62 is an axial flow fan.

Specifically, the enclosing plates include a first sub-plate adjacent to the cooling chamber 14, a second sub-plate adjacent to the electronic control box 12, and a third sub-plate adjacent to the compressor 11. The second subplate, the first subplate and the third subplate are connected in sequence; the second, first, third and first side plates 23 of the base 2 are connected to define the air return channel 9. The second external air return opening 32 of the first side plate 23 is communicated with the air return channel 9.

Wherein, the second board and the second side board 24 are respectively arranged at two opposite sides of the electric control box 12; the second branch plate is provided with a first communication port for communicating the air return channel 9 with the first air flow channel 51; the third plate and the third side plate 25 are respectively located at two opposite sides of the compressor 11, and a second communication port for communicating the air return channel 9 with the second airflow channel 52 is arranged on the third plate.

The arrangement enables the air outside the vehicle to enter the outdoor unit from four directions through the first external air return inlet 31, the second external air return inlet 32, the third external air return inlet 33 and the fourth external air return inlet 34, so that the air return quantity is effectively increased, and the heat exchange efficiency is improved. Specifically, the air outside the vehicle directly enters the air return channel 9 through the first external air return opening 31 and the second external air return opening 32; the outside air enters the first air flow channel 51 through the third outside return air inlet 33 and then enters the return air channel 9 through the first communication port; meanwhile, the outside air enters the second air flow passage 52 through the fourth outside air return opening 34, and then enters the return air passage 9 through the second communication opening.

In this embodiment, the dimension of the air return channel 9 perpendicular to the plane of the first external air return opening 31 is denoted as D₁(ii) a I.e., the lower surface of the condenser 61 and the lower surface of the base 2Distance between faces D₁. Wherein D is₁∈[40，60]The unit: mm; the arrangement can maximally utilize the first external air return opening 31, the second external air return opening 32, the third external air return opening 33 and the fourth external air return opening 34 to introduce the external ambient air for heat exchange, so that the heat exchange effect of the condenser 61 is enhanced.

In addition, the condensing fan 62 is positioned on the side of the condenser 61 away from the first outer return air inlet 31; the distance between the condensing fan 62 and the condenser 61 is denoted as D₂Wherein D is₂∈[40，70]The unit: mm; the effective use area of the condenser 61 can be effectively increased, and the heat exchange efficiency and the overall performance of the air conditioner are improved.

When the condensing fan 62 acts, a negative pressure region is formed on the upper side of the condenser 61, a part of the outside air directly enters the return air channel 9 through the first outside air return opening 31 and the second outside air return opening 32, and a part of the outside air enters the first air flow channel 51 through the third outside air return opening 33 and then enters the return air channel 9 through the first communication opening; a part of the air enters the second air flow path 52 through the fourth outside air return opening 34, and then enters the return air path 9 from the second air flow path 52. When the air outside the vehicle passes through the first air flow channel 51, the heat on the electronic control box 12 is taken away; the outside air takes heat away from the compressor 11 as it passes through the second air flow path 52. The air flow entering the air return channel 9 sequentially passes through the condenser 61 and the air outlet 66, and is discharged out of the parking air conditioner through the air outlet 66 to take away heat on the condenser 61, simultaneously take away heat on the electric control box 12 and the compressor 11, cool the electric control box 12 and the compressor 11, and guarantee efficient operation of the electric control box 12 and the compressor 11.

In the embodiment, the positions of the electric control box 12, the condenser 61 and the compressor 11 are reasonably arranged, and a plurality of external air return inlets are arranged, so that on one hand, the air return quantity is effectively increased, and the heat exchange efficiency is improved; on the other hand, the heat on the electronic control box 12 and the compressor 11 is taken away by effectively utilizing the drainage of the heat dissipation system for dissipating heat of the condenser 61, so that the electronic control box 12 and the compressor 11 are cooled, the heat dissipation efficiency is protected, and the high-performance work of the electronic control box 12 and the compressor 11 is ensured.

The parking air conditioner disclosed by the utility model is compact in structure, and the overall stability of the parking air conditioner is effectively improved. And the return air volume of indoor unit and outdoor unit in this embodiment is big, and its heat exchange efficiency is high, has effectively improved parking air conditioner's whole air supply performance, improves user experience. In addition, the installation is convenient, the cost is low, and the power consumption is low.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. Parking air conditioner, its characterized in that: it includes:

a housing having an opening formed therein;

the condensation fan is fixed in the second fan cavity;

2. Parking air conditioner according to claim 1, characterized in that: an electric appliance box and a compressor are mounted on the base; along the width direction of the car, electrical box and compressor are separated in the opposite sides of condenser.

3. Parking air conditioner according to claim 2, characterized in that: the electric appliance box is positioned between the condenser and the third outer air return inlet, and a first air flow channel is defined by the bottom of the electric appliance box and the bottom plate together; the first air flow channel is communicated with the third outer air return inlet and the air return channel.

4. Parking air conditioner according to claim 3, characterized in that: the compressor is positioned between the condenser and the fourth external air return inlet, and the bottom of the compressor and the bottom plate jointly define a second airflow channel; the second air flow channel is communicated with the fourth outer air return inlet and the air return channel.

5. Parking air conditioner according to any of claims 1-4, characterized in that: the bottom of the condenser and the bottom plate jointly define a return air channel.

6. Parking air conditioner according to any of claims 1-4, characterized in that: the dimension of the air return channel is marked as D in the direction perpendicular to the plane of the first external air return inlet₁，D₁∈[40，60]The unit: mm.

7. Parking air conditioner according to claim 6, characterized in that: the distance between the condensing fan and the condenser is recorded as D in the direction perpendicular to the plane of the first outer return air inlet₂，D₂∈[40，70]Unit of：mm。

8. Parking air conditioner according to any of claims 1-4, characterized in that: an inner air inlet and an inner air outlet which are communicated with the inside of the vehicle are formed on the bottom plate;

9. Parking air conditioner according to claim 8, characterized in that: an opening is formed at the top of the vehicle; an inner shell used for penetrating the opening of the roof part is arranged on the lower side of the base; and a return air channel is formed in the inner shell;

10. Parking air conditioner according to claim 9, characterized in that: an air outlet channel which is communicated with the inner air outlet and extends into the inner cavity of the inner shell is arranged on the lower side of the base; an air supply outlet communicated with the interior of the vehicle and the air outlet channel is arranged on the inner shell;