CN217235868U - 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, a air return fan, a refrigerant circulating system, a surface cooler and a water pump, wherein the air outlet box body is provided with an air outlet duct, an air inlet and an air outlet, and the air inlet and the air outlet are arranged oppositely; the air outlet fan is an axial flow fan and is arranged in the air outlet duct; the air return box body is connected with the air outlet box body, and is provided with an air return duct, an air return inlet and an air outlet; the air return fan is arranged in the air return duct; the refrigerant circulation loop is formed by sequentially connecting a compressor, a four-way valve, a return air heat exchanger, a throttling device and a plate heat exchanger through refrigerant pipes, the plate heat exchanger is provided with a water circulation pipeline and a refrigerant circulation pipeline, and heat exchange is carried out on the refrigerant and water in the plate heat exchanger; the surface cooler is arranged in the air outlet duct, is connected to a water circulation pipeline of the plate heat exchanger through a connecting water pipe and forms a water circulation loop; the water pump is used for driving water in the water circulation loop to circulate.

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 includes an indoor unit and an outdoor unit which are fixedly installed, and when a space needs to be cooled or heated temporarily, it takes time and labor to install the fixed air conditioner, and therefore, 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 and heating, but for a large space or an open space such as a factory building, the refrigeration and heating capacity of the movable air conditioner is limited, and the requirements of users 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 cooling and heating 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 compressor, a four-way valve, a return air heat exchanger, a plate heat exchanger, a throttling device, a surface cooler and a water pump, 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 connected with the air outlet box body, and is provided with an air return duct, and an air return opening 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 first interface of the four-way valve is connected with the air inlet of the compressor, and the second interface of the four-way valve is connected with the air outlet of the compressor; the air return heat exchanger is arranged in the air return air duct, the first end of the air return heat exchanger is connected with a third interface of the four-way valve, and air flows through the air return heat exchanger and exchanges heat with the air return heat exchanger when moving from the air return inlet to the air outlet; the plate heat exchanger is provided with a water circulation pipeline and a refrigerant circulation pipeline, the refrigerant circulation pipeline is connected into the refrigerant circulation loop to enable water in the water circulation pipeline to exchange heat with a refrigerant in the refrigerant circulation pipeline, and the first end of the refrigerant circulation pipeline is connected to the fourth interface of the four-way valve; the two ends of the throttling device are respectively connected to the second end of the return air heat exchanger and the second end of the plate type heat exchanger, wherein the four-way valve can be switched between a first state and a second state to realize the switching of the flow direction of a refrigerant; the first state is that the first interface is communicated with the third interface, and the second interface is communicated with the fourth interface; in the second state, the first interface is communicated with the fourth interface, and the second interface is communicated with the third interface; the surface air cooler is arranged in the air outlet duct and is connected to a water circulation pipeline of the plate heat exchanger through a connecting water pipe to form a water circulation loop; and the water pump is arranged on the connecting water pipe and used for driving water in the water circulation loop to circulate.

In the embodiment of the disclosure, the mobile air conditioner includes a refrigerant circulation system, an air circulation system and a water circulation system. The refrigerant circulating system comprises a compressor, a return air heat exchanger, a throttling device and a plate heat exchanger which are sequentially connected through a refrigerant pipeline. The water circulation system comprises a surface cooler, a water pump and a plate heat exchanger. The refrigerant circulating system performs refrigeration, and the air circulating 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 a surface cooler. 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, an air return heat exchanger 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 radiated to the air return heat exchanger through the air return heat exchanger and is increased in temperature, and then is discharged out of the air return box body from the air outlet.

In some embodiments, the plate heat exchanger is located in the return box.

In some embodiments, the water pump is located in the return air tank.

In some embodiments, the connection water pipe is further provided with a water filling port, and water is supplemented to the water circulation system through the water filling port.

In some embodiments, the mobile air conditioner further comprises a purge valve disposed in the water circulation pipeline at a highest position of the water circulation pipeline.

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, and the other end of the fixing bracket is connected to the air outlet box, so that the air return box is connected to the air outlet box through the fixing bracket and a certain distance is formed between the air return box and the air outlet box.

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

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

In some embodiments, the mobile air conditioner further includes a first filter screen and/or a second filter screen, the first filter screen is disposed at the air return opening of the air return box, and the second filter screen is disposed at the air inlet of the air outlet box.

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

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 inlet 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 by cold air formed by heat exchange with the surface air cooler, on the other hand, the flowing speed of the air in the environment can be increased by larger air outlet quantity, and therefore the evaporation of the moisture in the environment is accelerated to reduce the temperature;

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

3. the surface air cooler is used for refrigerating, a circulating medium in the surface air cooler is water, the specific heat capacity of the water is large and easy to obtain, the refrigerant filling amount of a refrigerant circulating system is reduced, and the cost is reduced;

4. the four-way valve is arranged to enable the mobile air conditioner to realize the functions of refrigeration and heating.

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 view of another mobile air conditioner provided by the embodiment of the 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 with a portion of a housing removed according to an embodiment of the present disclosure;

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 are as follows:

100 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: an air return heat exchanger; 330: a throttling device; 340: a plate heat exchanger; 350: a four-way valve; 351: a first interface; 352: a second interface; 353: a third interface; 354: a fourth interface;

360: a surface cooler; 370: a water pump;

400: a fixed 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 under appropriate circumstances such that embodiments of the present disclosure described herein may be made. 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, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the 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 to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. 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.

Referring to fig. 1 to 6, 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 compressor 310, a four-way valve 350, an air return heat exchanger 320, a plate heat exchanger 340, a throttling device 330, a surface air cooler 360, and a water pump 370, 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 return air box body 200 is connected with the air outlet box body 100, and the return air box body 200 is provided with a return air duct 210, a return air inlet 220 communicated with the return air 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 four-way valve 350, a first interface 351 is connected to the air inlet of the compressor 310, and a second interface 352 is connected to the air outlet of the compressor 310; the return air heat exchanger 320 is arranged in the return air duct 210, the first end of the return air heat exchanger 320 is connected to the third interface 353 of the four-way valve 350, and air flows through the return air heat exchanger 320 and exchanges heat with the return air heat exchanger 320 when moving from the return air inlet 220 to the exhaust outlet 230;

the plate type heat exchanger is provided with a water circulation pipeline and a refrigerant circulation pipeline, the refrigerant circulation pipeline is connected into the refrigerant circulation loop to enable water in the water circulation pipeline to exchange heat with a refrigerant in the refrigerant circulation pipeline, and the first end of the refrigerant circulation pipeline is connected to a fourth interface of the four-way valve; the two ends of the throttling device are respectively connected to the second end of the return air heat exchanger and the second end of the plate type heat exchanger, wherein the four-way valve can be switched between a first state and a second state to realize the switching of the flow direction of a refrigerant; the first state is that the first interface is communicated with the third interface, and the second interface is communicated with the fourth interface; the second state is that the first interface is communicated with the fourth interface, and the second interface is communicated with the third interface

The plate heat exchanger 340 is provided with a water circulation pipeline and a refrigerant circulation pipeline, the refrigerant circulation pipeline is connected into the refrigerant circulation loop so that the refrigerant in the refrigerant circulation pipeline and the water in the water circulation pipeline exchange heat in the plate heat exchanger 340, and a first end of the refrigerant circulation pipeline is connected to the fourth interface 354 of the four-way valve 350; the two ends of the throttling device 330 are respectively connected to the second end of the return air heat exchanger 320 and the second end of the plate heat exchanger 340, wherein the four-way valve 350 can be switched between a first state and a second state to realize the switching of the flow direction of the refrigerant, the first interface 351 is communicated with the third interface 353, and the second interface 352 is communicated with the fourth interface 354; in the second state, the first port 351 is communicated with the fourth port 354, and the second port 352 is communicated with the third port 353; the surface cooler 360 is arranged in the air outlet duct 110, and the surface cooler 360 is connected to a water circulation pipeline of the plate heat exchanger 340 through a connecting water pipe and forms a water circulation loop; and a water pump 370 provided in the connection water pipe for driving the water in the water circulation loop to circulate.

In the embodiment of the disclosure, the mobile air conditioner includes a refrigerant circulation system, an air circulation system and a water circulation system. The refrigerant circulation system includes a compressor 310, a return air heat exchanger 320, a throttle device 330, and a plate heat exchanger 340, which are sequentially connected by a refrigerant pipe. The air circulation system comprises an air outlet system and an air return system.

When the four-way valve 350 is in the first state, the first interface 351 is communicated with the third interface 353, the second interface 352 is communicated with the fourth interface 354, the high-temperature gaseous refrigerant discharged by the compressor 310 enters the return air heat exchanger 320, the temperature of the high-temperature gaseous refrigerant is reduced through the return air heat exchanger 320, the high-temperature gaseous refrigerant is throttled into a liquid refrigerant through the throttling device 330, the liquid refrigerant enters the plate heat exchanger 340, and a large amount of heat is evaporated and absorbed in the plate heat exchanger 340 to enter the air inlet end of the compressor 310. When the four-way valve 350 is in the first state, the mobile air conditioner operates in a cooling mode. The following description will be made by taking the cooling mode of the mobile air conditioner as an example.

The air outlet system comprises an air outlet box body 100, an air outlet fan 140 and a surface cooler 360. The air outlet box 100 is configured with an air outlet duct 110, the air inlet 120 and the air outlet 130 are disposed 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 return air heat exchanger 320, and a return air blower 240. The return air case 200 is configured with a return air opening 220 and an air discharge opening 230, and air enters the return air case 200 from the return air opening 220, passes through the return air heat exchanger 320 to radiate heat and increase temperature of the return air heat exchanger 320, and then is discharged out of the return air case 200 from the air discharge opening 230.

The return air system is provided to dissipate heat of the return air heat exchanger 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, so that air flow in the space where the air conditioner is located can be promoted. 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, a plate heat exchanger 340 is located in the return box 200. Thus, the refrigerant circulating system can be completely arranged in the return air box body 200, and the structure is compact. The refrigerant pipe has high-pressure pipe and low-pressure pipe, and the refrigerant still has certain corrosivity simultaneously, and consequently, the refrigerant pipe is mostly the stereoplasm copper pipe. And the water pipe connected between the surface cooler 360 and the plate heat exchanger 340 may be a hose. The plate heat exchanger 340 is disposed in the return air box 200, and the return air box 200 and the outlet air box 100 may be disposed in a split manner. In some scenarios, the outlet box 100 is disposed at a position close to the preset cooling area, and the return box 200 is disposed at a position away from the preset cooling area, so that the hot air exhausted from the return box 200 is away from the target cooling area, and the influence of noise generated when the refrigerant circulating system operates on the preset cooling area can be reduced. The plate heat exchanger 340 is disposed in the return air box 200, so that the length of the refrigerant connection pipe is shortened, and the refrigerant charge amount is reduced. The arrangement mode saves cost and is convenient for users to use.

Optionally, a water pump 370 is located in the return air box 200. The water pump 370 is disposed in the return air box 200, and noise of the water pump 370 is not transmitted to a target cooling area when air is discharged from the outlet air box 100. Meanwhile, the water pump 370, the compressor 310 and other components are located in the return air box 200, which is not only beneficial to heat dissipation of the water pump 370 and the compressor 310, but also enables the structure inside the return air box 200 to be more compact.

Optionally, the connecting water pipe is further provided with a water filling port, and water is supplemented for the water circulation system through the water filling port. The water injection port is arranged to facilitate water feeding and water discharging of the water circulation system.

Optionally, the mobile air conditioner further comprises a purge valve disposed in the water circulation pipeline and located at the highest position of the water circulation pipeline. The exhaust valve is arranged, the position of a water filling port of the circulating system can be unlimited, the water filling port is convenient to set, and the air in the water circulating system can be prevented from forming an air column to influence the refrigerating effect of the mobile air conditioner.

Optionally, the mobile air conditioner further comprises an exhaust duct connected to the exhaust outlet 230. The air outlet 130 of the mobile air conditioner blows out cold air, and the position where 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 determine 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; the return air box 200 is fixedly connected to the outlet air box 100 through the fixing bracket 400, and a certain distance is formed between the return air box 200 and the outlet air 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, caster 500 of the mobile air conditioner is a caster 500 with a lock, and when the mobile air conditioner performs cooling, caster 500 with a 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 amount of wind is greatly favorable to cooling the refrigerant in the return air heat exchanger 320, and the air supply distance is far away from the region of presetting the cooling position with hot-air, can improve the refrigeration effect of mobile air conditioner. In addition, air outlet fan 140 is an axial flow fan, and is simple to install and low in cost.

Optionally, the return air inlet 220 of the return air box of the mobile air conditioner is larger than the exhaust air outlet 230 of the return air box. 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 air return heat exchanger 320 is improved. The air outlet 230 is used for discharging hot air passing through the return air heat exchanger 320, and when the air outlet 230 is connected with an air outlet pipeline, the diameter of the air outlet pipeline is larger than or equal to that 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 discharged 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 return air duct 210, so as to prevent the dust entering the return air duct 210 from attaching to the return air heat exchanger 320 to affect the heat dissipation effect of the return air heat exchanger 320. And large particles of foreign matters entering the return air duct 210 along with the air can be prevented from knocking the return air heat exchanger 320 and the plate heat exchanger 340 to cause faults.

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 screen 600 disposed at the air inlet 120 can filter the air flowing through the air outlet duct 110, so as to prevent dust entering the air outlet duct 110 from attaching to the plate heat exchanger 340 and affecting the cooling capability of the plate heat exchanger 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 to prevent foreign matters from entering the return air duct 210 during the use of the mobile air conditioner, and also prevent occupational injury of the mobile air conditioner during refrigeration.

Alternatively, the throttling device 330 is a capillary tube connected at a first end to the return air heat exchanger 320 and at a second end to the plate heat exchanger 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 surface cooler 360 is at least partially disposed in the air outlet duct 110 in an inclined manner.

Under the fixed condition of air outlet duct 110 size, the setting of surface cooler 360 at least part slope can improve the heat transfer area of surface cooler 360, improves mobile air conditioner's refrigerating capacity.

Optionally, the return air heat exchanger 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 heat exchange area of the return air heat exchanger 320 can be increased by at least partially obliquely arranging the return air heat exchanger 320, and the refrigerating capacity of the mobile air conditioner is improved.

When the four-way valve 350 is in the second state, the first interface 351 is communicated with the fourth interface 354, the second interface 352 is communicated with the third interface 353, the high-temperature gaseous refrigerant discharged by the compressor 310 enters the plate heat exchanger 340, the temperature of the high-temperature gaseous refrigerant is reduced through the plate heat exchanger 340, the high-temperature gaseous refrigerant is throttled by the throttling device 330 to become a liquid refrigerant, the liquid refrigerant enters the return air heat exchanger 320, and a large amount of heat is evaporated and absorbed in the return air heat exchanger 320 to enter the air inlet end of the compressor 310. When the four-way valve 350 is in the second state, the mobile air conditioner operates in the heating mode.

When the mobile air conditioner operates in a heating mode, air in the environment where the mobile air conditioner is located enters the air inlet duct through the air inlet, is heated through the surface air cooler 360 and then is blown to the preset cooling position through the air outlet 130. Air of the environment in which the mobile air conditioner is located enters the return air duct 210 through the return air inlet 220. Even in the heating mode, the air temperature of the environment in which the mobile air conditioner is located is higher than that of the return air heat exchanger 320, so that the return air heat exchanger 320 can collect low-grade heat in the air by means of refrigerant evaporation. The air is cooled by passing through the return air heat exchanger 320 and discharged from the discharge outlet 230. And at the same time, the heat generated by the operation of the compressor 310 is also removed. The mobile air conditioner is provided with the four-way valve 350, so that the refrigerating and heating states can be switched, and the functions of the mobile air conditioner are enriched.

The above description and the 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 illustrated in the drawings, and various modifications and changes can 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 connected with the air outlet box body, and is provided with an air return duct, and an air return opening 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 first interface of the four-way valve is connected with the air inlet of the compressor, and the second interface of the four-way valve is connected with the air outlet of the compressor;

the air return heat exchanger is arranged in the air return air duct, the first end of the air return heat exchanger is connected with a third interface of the four-way valve, and air flows through the air return heat exchanger and exchanges heat with the air return heat exchanger when moving from the air return inlet to the air outlet;

the plate type heat exchanger is provided with a water circulation pipeline and a refrigerant circulation pipeline, the refrigerant circulation pipeline is connected into the refrigerant circulation loop to enable water in the water circulation pipeline to exchange heat with a refrigerant in the refrigerant circulation pipeline, and the first end of the refrigerant circulation pipeline is connected to a fourth interface of the four-way valve;

the two ends of the throttling device are respectively connected to the second end of the return air heat exchanger and the second end of the plate heat exchanger, wherein the four-way valve can be switched between a first state and a second state to realize the switching of the flow direction of a refrigerant; the first state is that the first interface is communicated with the third interface, and the second interface is communicated with the fourth interface; in the second state, the first interface is communicated with the fourth interface, and the second interface is communicated with the third interface;

the surface air cooler is arranged in the air outlet duct and is connected to a water circulation pipeline of the plate heat exchanger through a connecting water pipe to form a water circulation loop;

and the water pump is arranged on the connecting water pipe and used for driving water in the water circulation loop to circulate.

2. The mobile air conditioner according to claim 1,

the plate heat exchanger is positioned in the return air box body; and/or the presence of a gas in the gas,

the water pump is located in the return air box body.

3. The mobile air conditioner according to claim 1,

the connecting water pipe is also provided with a water filling port, and water is supplemented to the water circulation pipeline through the water filling port.

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

and the air release valve is arranged on the water circulation pipeline and is positioned at the highest position of the water circulation pipeline.

5. 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 connected to the air outlet box body through the fixed support, and a certain distance is formed between the air return box body and the air outlet box body.

6. The mobile air conditioner of claim 5,

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

7. The mobile air conditioner according to claim 1,

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

8. The mobile air conditioner according to claim 1,

and the air return port of the air return box body is larger than the air outlet of the air return box body.

9. 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.

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

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

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