CN216976982U - Mobile air conditioner - Google Patents

Abstract

The application relates to the technical field of air conditioning, and discloses a mobile air conditioner which comprises an air outlet box body, an air outlet fan, an air return box body, an air return fan, a condenser, an evaporator compressor and a throttling device, wherein the air outlet box body is provided with an air outlet air channel, an air inlet and an air outlet which are communicated with the air outlet air channel, and the air inlet and the air outlet are arranged oppositely; the air outlet fan is arranged in the air outlet duct and used for driving air to move from the air inlet to the air outlet, and the air outlet fan is an axial flow fan; the air return box body is fixedly connected with the air outlet box body, and is provided with an air return duct, an air return inlet and an air outlet which are communicated with the air return duct; the air return fan is arranged in the air return duct and is used for driving air to move from the air return inlet to the air outlet; the condenser is arranged in the return air duct, and air flows through the condenser and exchanges heat with the condenser when moving from the return air inlet to the air outlet; the evaporator is arranged in the air outlet duct, and air flows through the evaporator and exchanges heat with the evaporator when moving from the air inlet to the air outlet.

Description

Mobile air conditioner

Technical Field

The present application relates to the field of air conditioning technology, for example, to a mobile air conditioner.

Background

At present, an air conditioner generally comprises an indoor unit and an outdoor unit which are fixedly installed, and when a space needs to be cooled temporarily, the installation of the fixed air conditioner is time-consuming and labor-consuming, so that the use of the movable air conditioner in some specific fields is more and more common.

In the prior art, a mobile air conditioner is disclosed, comprising: the heat exchange loop comprises a compressor, an evaporator and a condenser which are sequentially connected to form a closed loop, and the evaporator is arranged at the upper end of the condenser; the air exhaust assembly is used for enabling indoor air to reenter the room after flowing through the evaporator and is arranged opposite to the evaporator; and the air exchange assembly is used for sending the indoor air out of the outdoor space after flowing through the condenser and is opposite to the condenser.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

in a small space, the movable air conditioner can perform normal refrigeration, but for a large space or an open space such as a factory building, the refrigerating capacity of the movable air conditioner is limited, and the requirement of a user cannot be met.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a movable air conditioner to solve the problem of how to improve the refrigerating capacity of the movable air conditioner.

In some embodiments, the mobile air conditioner comprises an air outlet box body, an air outlet fan, a return air box body, a return air fan, a condenser, an evaporator compressor and a throttling device, wherein the air outlet box body is configured with an air outlet duct and an air inlet and an air outlet which are communicated with the air outlet duct, and the air inlet is arranged opposite to the air outlet; the air outlet fan is arranged in the air outlet duct and used for driving air to move from the air inlet to the air outlet, and the air outlet fan is an axial flow fan; the air return box body is fixedly connected with the air outlet box body, and is provided with an air return duct, and an air return inlet and an air outlet which are communicated with the air return duct; the air return fan is arranged in the air return duct and used for driving air to move from the air return inlet to the air outlet; the compressor is fixed on the return air duct; the condenser is arranged in the return air duct, and air flows through the condenser and exchanges heat with the condenser when moving from the return air inlet to the air outlet; a refrigerant inlet of the condenser is connected with an exhaust port of the compressor; a first port of the throttling device is connected with a refrigerant outlet of the condenser; the evaporator is arranged in the air outlet duct, and air flows through the evaporator and exchanges heat with the evaporator when moving from the air inlet to the air outlet; and a refrigerant inlet of the evaporator is connected with a second port of the throttling device, and a refrigerant outlet is connected with a return air port of the compressor.

The condenser is arranged in the return air duct, and air flows through the condenser and exchanges heat with the condenser when moving from the return air inlet to the air outlet; the evaporator is arranged in the air outlet duct, and air flows through the evaporator and exchanges heat with the evaporator when moving from the air inlet to the air outlet; the compressor is fixed on the return air duct; and the throttling device is sequentially connected with the evaporator, the compressor and the condenser through refrigerant pipes to form a refrigerant circulation loop.

In the embodiment of the disclosure, the mobile air conditioner includes a refrigerant circulation system and an air circulation system. The refrigerant circulating system comprises a compressor, a condenser, a throttling device and an evaporator which are sequentially connected through refrigerant pipelines. The air circulation system comprises an air outlet system and an air return system. The air outlet system comprises an air outlet box body, an air outlet fan and an evaporator. The air outlet box body is provided with an air outlet duct, the air inlet and the air outlet are arranged oppositely, and the air outlet duct is a straight air duct. Therefore, the air output of the air outlet system of the mobile air conditioner can be increased under the condition of certain fan power. The air outlet fan is an axial flow fan, and the moving direction of air in the air outlet duct is consistent with the direction of a motor shaft of the air outlet fan. The direction of the air entering the air outlet duct and leaving the air outlet duct is not changed, so that the air quantity of the air outlet fan is large and the air supply distance is long. In a larger space or an open space, the movable setting position is far away from a user, so that the influence of fan noise on the user can be reduced, and the wind blown out by the mobile air conditioner can be dispersed by utilizing the characteristic of far air outlet distance, thereby obtaining more uniform refrigeration effect. The air return system comprises an air return box body, a condenser and an air return fan. The air return box body is provided with an air return opening and an air outlet, air enters the air return box body from the air return opening, is subjected to heat dissipation and temperature rise of the condenser through the condenser, and then is discharged out of the air return box body from the air outlet.

In some embodiments, the mobile air conditioner further includes a fixing bracket, one end of the fixing bracket is connected to the air return box body, and the other end of the fixing bracket is connected to the air outlet box body, so that the air return box body is fixedly connected to the air outlet box body through the fixing bracket, and a certain distance is formed between the air return box body and the air outlet box body.

In some embodiments, the fixed bracket is vertically arranged, and the air outlet box body is located above the air return box body.

In some embodiments, the mobile air conditioner further comprises a plurality of casters disposed at the bottom of the return air cabinet.

In some embodiments, the air return fan is an axial flow fan, and the air return opening is opposite to the air outlet.

In some embodiments, the return air inlet of the return air box is larger than the exhaust air outlet of the return air box.

In some embodiments, in the mobile air conditioner, an air outlet direction of the air outlet of the air return box body is different from an air outlet direction of the air outlet box body.

In some embodiments, the mobile air conditioner further comprises a first filter screen and/or a second filter screen, wherein the first filter screen is arranged at the air return opening; and the second filter screen is arranged at the air inlet.

In some embodiments, the throttling device is a capillary tube, a first end of the capillary tube is connected to the condenser, and a second end of the capillary tube is connected to the evaporator.

In some embodiments, the mobile air conditioner further includes an air exhaust duct connected to the air outlet, and configured to guide the air exhausted from the air return box to a set area.

The mobile air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

1. the air outlet and the air return opening of the air outlet box body are oppositely arranged, and the air outlet fan is a centrifugal fan, so that the air outlet quantity of the air outlet box body can be greatly increased, on one hand, the environment is cooled through cold air formed by heat exchange with the evaporator, on the other hand, the flowing speed of the air in the environment can be increased due to the larger air outlet quantity, the evaporation of the moisture in the environment is accelerated, and the environment is cooled;

2. the compressor and the throttling device are arranged in the return air duct, and heat dissipation of the compressor and the throttling device is facilitated.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated in the accompanying drawings, which correspond to the accompanying drawings and not in a limiting sense, in which elements having the same reference numeral designations represent like elements, and in which:

fig. 1 is a schematic structural diagram of a mobile air conditioner provided in an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another mobile air conditioner provided in the embodiment of the present disclosure;

FIG. 3 is a schematic diagram of another mobile air conditioner provided by the embodiment of the present disclosure;

fig. 4 is a schematic structural view of a mobile air conditioner provided by the embodiment of the disclosure with a part of a housing removed;

fig. 5 is a schematic structural view of another mobile air conditioner provided by the embodiment of the present disclosure with a part of a housing removed;

fig. 6 is a schematic diagram of a refrigerant cycle of the mobile air conditioner according to the embodiment of the disclosure.

Reference numerals:

100: an air outlet box body; 110: an air outlet duct; 120: an air inlet; 130: an air outlet; 140: an air outlet fan;

200: a return air box body; 210: an air return duct; 220: an air return opening; 230: an air outlet; 240: a return air fan;

310: a compressor; 320: a condenser; 330: a throttling device; 340: an evaporator;

400: fixing a bracket;

500: a caster wheel;

600: a second filter screen;

700: a second mesh enclosure.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged as appropriate for the embodiments of the disclosure described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the disclosed embodiments can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more, unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

With reference to fig. 1 to 6, an embodiment of the present disclosure provides a mobile air conditioner, including an air outlet box 100, an air outlet fan 140, an air return box 200, an air return fan 240, a condenser 320, an evaporator 340, a compressor 310, and a throttling device 330, where the air outlet box 100 is configured with an air outlet duct 110, and an air inlet 120 and an air outlet 130 communicated with the air outlet duct 110, and the air inlet 120 is disposed opposite to the air outlet 130; the air outlet fan 140 is arranged in the air outlet duct 110 and used for driving air to move from the air inlet 120 to the air outlet 130, and the air outlet fan 140 is an axial flow fan; the air return box body 200 is fixedly connected with the air outlet box body 100, and the air return box body 200 is provided with an air return duct 210, an air return inlet 220 communicated with the air return duct 210 and an air outlet 230; a return air fan 240 disposed in the return air duct 210 for driving air to move from the return air inlet 220 to the exhaust outlet 230; a compressor 310 fixed to the return air duct 210; a condenser 340 disposed on the return air duct 210, through which air flows and exchanges heat with the condenser 320 when moving from the return air inlet 220 to the air outlet 230; a refrigerant inlet of the condenser 320 is connected to an exhaust port of the compressor 310; a throttle device 330 having a first port connected to a refrigerant outlet of the condenser 320; the evaporator 340 is disposed in the air outlet duct 110, and air flows through the evaporator 340 and exchanges heat with the evaporator 340 when moving from the air inlet 120 to the air outlet 130; the refrigerant inlet of the evaporator 340 is connected to the second port of the throttle device 330, and the refrigerant outlet is connected to the return air port of the compressor 310.

In the embodiment of the disclosure, the mobile air conditioner includes a refrigerant circulation system and an air circulation system. The refrigerant circulation system includes a compressor 310, a condenser 320, a throttle device 330, and an evaporator 340 sequentially connected by refrigerant pipes. The air circulation system comprises an air outlet system and an air return system.

The air outlet system comprises an air outlet box 100, an air outlet fan 140 and an evaporator 340. The air outlet box 100 is configured with an air outlet duct 110, the air inlet 120 and the air outlet 130 are arranged oppositely, and the air outlet duct 110 is a straight duct. Therefore, the air output of the air outlet system of the mobile air conditioner can be increased under the condition of certain fan power.

The air outlet fan 140 is an axial flow fan, and the moving direction of the air in the air outlet duct 110 is the same as the direction of the motor shaft of the air outlet fan 140. The direction of the air entering the air outlet duct 110 and leaving the air outlet duct 110 is not changed, so that the air volume of the air outlet fan 140 is large and the air supply distance is long. In a larger space or an open space, the movable setting position is far away from a user, so that the influence of fan noise on the user can be reduced, and the wind blown out by the mobile air conditioner can be dispersed by utilizing the characteristic of far air outlet distance, thereby obtaining more uniform refrigeration effect.

The air outlet fan 140 is in the form of an axial flow fan, and is simple to install and low in cost.

The return air system includes a return air tank 200, a condenser 320, and a return air blower 240. The return air case 200 is configured with a return air opening 220 and an exhaust air opening 230, and air enters the return air case 200 from the return air opening 220, passes through the condenser 320 to radiate heat to the condenser 320 and increase in temperature, and then is discharged out of the return air case 200 from the exhaust air opening 230.

The return air system is provided to dissipate heat from the condenser 320 so that the air conditioner can be continuously cooled, and the return air inlet 220 of the exhaust system is under negative pressure to suck air in the environment where the mobile air conditioner is located into the exhaust air duct and exhaust the air through the exhaust outlet 230, thereby promoting air flow in the space where the air conditioner is located. The hot air discharged from the discharge port 230 may be discharged in a form determined according to a usage scenario. For example, when cooling a high temperature outdoor worker, the air supply opening faces the outdoor worker or the position where the outdoor worker is located, and the hot air discharged from the air discharge opening 230 may not face the outdoor worker. In the case where the overall temperature of the environment in which the mobile air conditioner is located is not likely to decrease, for example, in the case of cooling in the furnace front operation of an iron works, the air supply opening may be directed to the furnace front operation position, and the hot air blown from the air discharge opening 230 may not be directed to the furnace front operation position. In the case where there is a possibility that the temperature of the environment in which the mobile air conditioner is located is lowered, for example, in a closed or semi-closed factory building for non-high temperature operation, the hot air discharged from the outlet 130 can be discharged to the outside to lower the overall temperature of the environment.

Optionally, the mobile air conditioner further includes an exhaust duct connected to the exhaust port 230 for guiding the air exhausted from the return air box 200 to a set area, where the set area may be an outdoor area or other areas that do not affect the air-out effect or the indoor temperature. The air outlet 130 of the mobile air conditioner blows out cold air, and the position towards which the air outlet 130 faces is a preset cooling position. The hot air is discharged from the air outlet 230, and the air outlet 230 is connected to an air discharging pipe, so that the hot air discharged from the air outlet box 100 can be discharged to a preset position as required. For example, hot air is discharged to the other side of the preset cool-down position or hot air is discharged to the outside of the environment where the air conditioner is located. The air exhaust pipeline is arranged, so that the air exhaust mode of the mobile air conditioner is more flexible.

Optionally, the exhaust duct is a flexible hose. Can decide the mode of airing exhaust through the trend that sets up flexible hose, mobile air conditioner's use mode is more nimble. For example, one end of the exhaust duct is connected to the exhaust port 230, and the other end extends out of the window or the door, or is connected to a predetermined exhaust port.

Optionally, the mobile air conditioner further includes a fixing bracket 400, one end of the fixing bracket 400 is connected to the return air box 200, and the other end is connected to the outlet air box 100; wherein, make return air box 200 through fixed bolster 400 fixed connection in air-out box 100, and return air box 200 with have certain interval between the air-out box 100.

Although the outlet box 100 and the return box 200 are independent of each other in the air circulation system, the refrigerant circulation system is located in both the outlet box 100 and the return box 200. Since the refrigerant pipe for connecting the refrigerant circulation system is a copper pipe, the relative position between the outlet box 100 and the return box 200 needs to be kept constant. The temperatures in the air outlet box 100 and the air return box 200 are different, and the close arrangement of the air outlet box 100 and the air return box 200 can cause the heat in the air return box 200 to be transferred to the air outlet box 100, which affects the refrigeration efficiency of the air conditioner. The fixing bracket 400 is arranged to separate the air outlet box 100 from the air return box 200, thereby improving the refrigeration effect of the mobile air conditioner.

Optionally, the fixing bracket 400 is vertically disposed, and the outlet box 100 is located above the return box 200.

The air outlet box 100 is located above the air return box 200, and the air outlet box 100 blows cold air from above. The cold wind blows to predetermineeing the cooling position, and the density of cold air is less than the density of hot-air, and the cold air falls down, can make predetermineeing the cooling position and covered by the cold air cage to obtain better cooling effect. In this case, the fixing bracket 400 serves to structurally connect the outlet case 100 and the return case 200, on the one hand, and also serves to increase the height of the outlet case 100, on the other hand. The air outlet box 100 is higher, which is beneficial to better refrigerating the mobile air conditioner. Moreover, the compressor 310 is arranged in the return air box body 200, the whole weight of the return air box body 200 is large, the air outlet box body 100 is arranged above the return air box body 200, and the mobile air conditioner can be more stable when standing on the ground.

Optionally, the mobile air conditioner further includes a plurality of casters 500 disposed at the bottom of the return air cabinet 200.

The caster 500 is provided at the bottom of the return air cabinet 200, which is convenient for a user to move the mobile air conditioner in a space.

Optionally, the caster 500 of the mobile air conditioner is a caster 500 with lock, and when the mobile air conditioner performs cooling, the caster 500 with lock is locked to prevent the air conditioner mover from moving in the cooling process.

Optionally, the return air fan 240 is an axial flow fan, and the return air inlet 220 is disposed opposite to the exhaust outlet 230.

The return air fan 240 is an axial flow fan, and the moving direction of air in the return air duct 210 is the same as the direction of the motor shaft of the return air fan 240. The direction of the air entering the return air duct 210 and leaving the return air duct 210 is not changed, so that the volume of the return air fan 240 is large and the distance of the air supply is long. The air quantity is large, the cooling of the refrigerant in the condenser 320 is facilitated, the air supply distance is long, hot air can be sent to an area far away from a preset cooling position, and the refrigeration effect of the mobile air conditioner can be improved. In addition, air outlet fan 140 is an axial flow fan, and is simple to install and low in cost.

Optionally, the mobile air conditioner return air inlet 220 is larger than the air outlet 230. When air enters the return air duct 210 from the return air inlet 220, the smaller the return air inlet 220 is, the larger the negative pressure at the return air inlet 220 is caused by the return air fan 240, and the faster the air speed at the return air inlet 220 is. The negative pressure tends to draw dust or debris near the return air inlet 220 into the return air duct 210, and the wind speed tends to cause loud noise. Therefore, the large return air inlet 220 can prevent foreign materials from being sucked into the return air duct 210, and can reduce noise generated when the mobile air conditioner is operated. In addition, the larger air inlet 120 can increase the air volume during air return, and further, the heat dissipation effect of the condenser 320 is improved. The air outlet 230 is used to discharge the hot air passing through the condenser 320, and when the air outlet 230 is connected with an air outlet duct, the diameter of the air outlet duct is greater than or equal to the diameter of the air outlet 230. Therefore, the exhaust air should not be too large. The return air inlet 220 of the mobile air conditioner is larger than the air outlet 230, so that the air circulation capacity of the mobile air conditioner can be improved, and the running noise of the mobile air conditioner can be reduced.

Optionally, the outlet direction of the outlet 130 of the outlet box of the mobile air conditioner is different from the outlet direction of the outlet 230 of the return box.

The direction of air outlet 130 is different from the direction of air exit 230, and air outlet 130 blows cold air to predetermineeing the cooling position, and the hot air of air exit 230 is arranged to other positions. The air outlet 130 and the air outlet 230 have different air exhaust directions, and in some scenarios, the air outlet 230 can directly exhaust air without an air exhaust duct. The arrangement mode facilitates the use of the mobile air conditioner.

Optionally, the mobile air conditioner further includes a first filter screen disposed at the air return opening 220 of the air return box.

The air return opening 220 is provided with a first filter screen for filtering the air flowing through the air return duct 210, so as to prevent the dust entering the air return duct 210 from attaching to the condenser 320 and affecting the heat dissipation effect of the condenser 320. It is also possible to prevent large particles of foreign matter from entering the return air duct 210 with the air and knocking the heat exchanger and the evaporator 340 to cause a malfunction.

Optionally, the mobile air conditioner further includes a second filter screen 600 disposed at the air inlet 120 of the outlet box.

The second filter 600 disposed at the air inlet 120 can filter the air flowing through the air outlet duct 110, so as to prevent the dust entering the air outlet duct 110 from adhering to the evaporator 340 and affecting the cooling capacity of the evaporator 340.

Optionally, the movable air conditioner further includes a first mesh cover, and the first mesh cover is disposed at the air return opening 220. The return air inlet 220 is located in the return air box 200, the position of the return air inlet 220 is relatively low, and the return air inlet 220 is provided with a first mesh enclosure which can prevent foreign matters from entering the return air duct 210 in the use process of the mobile air conditioner.

Optionally, the movable air conditioner further includes a second mesh cover 700, and the second mesh cover 700 covers the air inlet 120. The air inlet 120 is provided with a second mesh enclosure 700, so that foreign matters can be prevented from entering the return air duct 210 during the use of the mobile air conditioner, and occupational injuries of the mobile air conditioner during refrigeration can also be avoided.

Alternatively, the throttling device 330 is a capillary tube, which is connected at a first end to the condenser 320 and at a second end to the evaporator 340.

The capillary tube is low in cost and high in working stability, and the throttling device 330 is the capillary tube, so that the cost of the movable air conditioner can be reduced, and the working stability of the movable air conditioner is improved.

Optionally, the evaporator 340 is at least partially disposed in the wind outlet duct 110 in an inclined manner.

Under the condition that the size of the air outlet duct 110 is fixed, at least part of the evaporator 340 is obliquely arranged, so that the heat exchange area of the evaporator 340 can be increased, and the refrigerating capacity of the mobile air conditioner is improved.

Optionally, the condenser 320 is at least partially tilted within the return air duct.

Under the condition that the size of the return air duct 210 is fixed, the condenser 320 is at least partially arranged in an inclined mode, so that the heat exchange area of the condenser 320 can be increased, and the refrigerating capacity of the mobile air conditioner can be improved.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A mobile air conditioner, comprising:

the air outlet box body is provided with an air outlet duct, an air inlet and an air outlet which are communicated with the air outlet duct, and the air inlet and the air outlet are arranged oppositely;

the air outlet fan is arranged in the air outlet duct and used for driving air to move from the air inlet to the air outlet, and the air outlet fan is an axial flow fan;

the air return box body is fixedly connected with the air outlet box body, and is provided with an air return duct, and an air return inlet and an air outlet which are communicated with the air return duct;

the air return fan is arranged in the air return duct and used for driving air to move from the air return inlet to the air outlet;

the compressor is fixed on the return air duct;

the condenser is arranged in the return air duct, and air flows through the condenser and exchanges heat with the condenser when moving from the return air inlet to the air outlet; a refrigerant inlet of the condenser is connected with an exhaust port of the compressor;

a first port of the throttling device is connected with a refrigerant outlet of the condenser;

the evaporator is arranged in the air outlet duct, and air flows through the evaporator and exchanges heat with the evaporator when moving from the air inlet to the air outlet; and a refrigerant inlet of the evaporator is connected with the second port of the throttling device, and a refrigerant outlet of the evaporator is connected with a return air port of the compressor.

2. The mobile air conditioner of claim 1, further comprising:

one end of the fixed support is connected with the air return box body, and the other end of the fixed support is connected with the air outlet box body;

the air return box body is fixedly connected with the air outlet box body through the fixed support, and a certain distance is reserved between the air return box body and the air outlet box body.

3. The mobile air conditioner according to claim 2,

the fixed support is vertically arranged, and the air outlet box body is located above the air return box body.

4. The mobile air conditioner of claim 3, further comprising:

and the casters are arranged at the bottom of the air return box body.

5. The mobile air conditioner according to claim 1,

the air return fan is an axial flow fan, and the air return port is arranged opposite to the air outlet.

6. The mobile air conditioner of claim 1,

and the air return opening of the air return box body is larger than the air exhaust opening of the air return box body.

7. The mobile air conditioner according to claim 1,

the air outlet direction of the air outlet box body is different from the air outlet direction of the air outlet of the air return box body.

8. The mobile air conditioner of claim 1, further comprising:

the first filter screen is arranged at the air return opening of the air return box body; and/or the presence of a gas in the gas,

and the second filter screen is arranged at the air inlet of the air outlet box body.

9. The mobile air conditioner according to claim 1,

the throttling device is a capillary tube, a first port of the capillary tube is connected to the condenser, and a second port of the capillary tube is connected to the evaporator.

10. The mobile air conditioner according to any one of claims 1 to 9, further comprising:

and the air exhaust pipeline is connected with the air exhaust outlet and used for guiding the air exhausted by the air return box body to a set area.

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