Air conditioning unit and outdoor unit thereof

Abstract

The utility model provides an outdoor unit of an air conditioning unit, the outdoor unit of the air conditioning unit comprises a frequency converter, a first refrigerant branch, a first pipeline and a switch assembly, the frequency converter is provided with a heat exchange structure, and the heat exchange structure is provided with a first refrigerant inlet; the condenser is provided with a first refrigerant outlet; a cooling module for cooling a refrigerant is arranged on the first refrigerant branch; the two ends of the first refrigerant branch are connected with the first refrigerant inlet and the first refrigerant outlet correspondingly, and the two ends of the first pipeline are connected with the first refrigerant inlet and the first refrigerant outlet correspondingly; the switch assembly is used for controlling conduction of one of the first refrigerant branch and the first pipeline. The outdoor unit of the air conditioning unit can adjust the temperature of the condenser used for cooling the refrigerant of the frequency converter, and solves the problem that the frequency converter cannot operate in a normal temperature range.

Description

TECHNICAL FIELD

[0001] The utility model relates to air treatment equipment's technical field, in particular to a kind of air conditioning unit and its outdoor unit. BACKGROUND

[0002] The air conditioning unit in the related art utilizes frequency converter to control the operating frequency of the compressor. The operating temperature of the frequency converter greatly affects its operating state. In order to enable the frequency converter to operate within a normal temperature range, the air conditioning unit cools the frequency converter using liquid refrigerant discharged by the condenser. When the air conditioning unit operates, the temperature on the side of the condenser can be high, which causes the temperature of the liquid refrigerant discharged by the condenser to also rise, resulting in insufficient cooling capacity of the liquid refrigerant and overheating of the frequency converter, which causes the frequency converter to be unable to operate within a normal temperature range. SUMMARY

[0003] In view of the above problems, the utility model is proposed to provide an air conditioning unit and its outdoor unit that overcome the above problems or at least partially solve the above problems. When the temperature of the refrigerant discharged by the condenser is high, the refrigerant can be cooled by the cooling module provided in the first refrigerant branch to prevent the frequency converter from overheating. When the temperature of the refrigerant discharged by the condenser is normal, the refrigerant can directly pass through the first pipe body to directly cool the frequency converter, thereby solving the problem that the frequency converter is unable to operate within a normal temperature range.

[0004] Specifically, the utility model provides an outdoor unit of an air conditioning unit.

[0005] The outdoor unit of the air conditioning unit of the utility model comprises: a refrigeration system, the refrigeration system comprising a condenser and a compressor; a frequency converter for controlling the frequency of the compressor, the frequency converter being connected with a heat exchange structure for cooling the frequency converter; a first pipe and a first refrigerant branch being connected between the heat exchange structure and the condenser, and a switching assembly, the first pipe and the first refrigerant branch being arranged in parallel; the switching assembly being configured to enable at least one of the first pipe and the first refrigerant branch to be switched to an on state; a cooling module being provided on the first refrigerant branch, the cooling module being used to cool the refrigerant flowing through the first refrigerant branch.

[0006] In some embodiments, the switching assembly comprises a first switching valve and a second switching valve, the first switching valve being provided on the first pipe, and the second switching valve being provided on the first refrigerant branch.

[0007] In some embodiments, the cooling module comprises a first shell defining a cooling cavity, a second refrigerant inlet and a second refrigerant outlet communicating with the cooling cavity, and a refrigeration device having a cold end generating cold energy after being powered on, the cold end being connected to the first shell so that the cold end can cool the refrigerant in the cooling cavity.

[0008] The first refrigerant branch comprises a second pipeline and a third pipeline, one end of the second pipeline being connected to the condenser, the other end of the second pipeline being connected to the second refrigerant inlet, one end of the third pipeline being connected to the second refrigerant outlet, and the other end of the third pipeline being connected to the heat exchange structure, the second refrigerant outlet being arranged at the bottom of the first shell.

[0009] In some embodiments, the cooling module further comprises a first heat exchange member comprising a first connecting portion and a plurality of first protruding portions, the first connecting portion being connected to the cold end, the plurality of first protruding portions being connected to the first connecting portion and being arranged at intervals, and at least part of each first protruding portion being arranged in the cooling cavity.

[0010] In some embodiments, the refrigeration device is a semiconductor refrigeration device.

[0011] In some embodiments, the outdoor unit of the air conditioning unit further comprises an economizer connected to the condenser, a second shell defining a heating cavity, a fourth refrigerant inlet and a fourth refrigerant outlet communicating with the heating cavity, the fourth refrigerant inlet being connected to the economizer, and the fourth refrigerant outlet being connected to the compressor, the refrigeration device further having a hot end generating heat after being powered on, the hot end being connected to the second shell so that the hot end can heat the refrigerant in the heating cavity, and the fourth refrigerant outlet being arranged at the top of the second shell.

[0012] In some embodiments, the outdoor unit of the air conditioning unit further comprises a second heat exchange member comprising a second connecting portion and a plurality of second protruding portions, the second connecting portion being connected to the hot end, the plurality of second protruding portions being connected to the second connecting portion and being arranged at intervals, and at least part of each second protruding portion being arranged in the heating cavity.

[0013] In some embodiments, the outdoor unit of the air conditioning unit further comprises an acquisition module for acquiring a temperature parameter of the frequency converter; a control module configured to control one of the first refrigerant branch and the first pipeline to be turned on according to the temperature parameter; wherein when the temperature parameter is greater than or equal to a preset temperature value, the first refrigerant branch is controlled to be turned on; the outdoor unit of the air conditioning unit further comprises a storage module configured to store the preset temperature value; the storage module is electrically connected with the control module.

[0014] In some embodiments, the heat exchange structure comprises a plurality of straight pipes and a plurality of arc-shaped pipes, a head end of each of the straight pipes being connected to a tail end of another straight pipe through the arc-shaped pipe; the inlet end of the straight pipe and the arc-shaped pipe at the most upstream one form a first refrigerant inlet.

[0015] The air conditioning unit of the utility model embodiment comprises the outdoor unit of any one of the preceding aspects.

[0016] The first refrigerant branch of the outdoor unit of the air conditioning unit of the utility model embodiment is provided with a cooling module, when the temperature of the refrigerant flowing out of the condenser is relatively high, the switch assembly switches the first refrigerant branch to be turned on and makes the cooling module cool the temperature of the refrigerant flowing out of the condenser, so that the temperature of the refrigerant entering the heat exchange structure is reduced, and the problem of overheat of the frequency converter is avoided. And when the temperature of the refrigerant flowing out of the condenser is normal, the switch assembly switches the first pipeline to be turned on, so that the refrigerant flowing out of the condenser directly enters the heat exchange structure, and the refrigerant is not additionally cooled, thereby avoiding the temperature of the frequency converter being too low and ensuring that the frequency converter can work normally, so that the frequency converter of the utility model embodiment will not have the problems of too high operating temperature or too low operating temperature, and the frequency converter can operate within a normal temperature range.

[0017] The above and other objects, advantages and features of the present utility model will become more apparent from the following detailed description of some embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference signs in the drawings denote the same or similar components or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 is a schematic structural view of the outdoor unit of the air conditioning unit of the utility model embodiment;

[0020] Figure 2 is a schematic structural view of the outdoor unit of the air conditioning unit of the utility model embodiment;

[0021] Figure 3 This is a schematic structural diagram of the outdoor unit of the air conditioning unit according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic structural diagram of the refrigerator according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic structural diagram of the outdoor unit of the air conditioning unit according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic structural diagram of the heat exchange structure according to an embodiment of the present utility model.

[0025] Figure label:

[0026] Inverter 100; Heat exchange structure 110; Straight pipe 111; Arc-shaped pipe 112; First refrigerant inlet 111; Condenser 200; First refrigerant outlet 210; First refrigerant branch 310; Second pipe 311; Third pipe 312; First pipe 320; First switching valve 351; Second switching valve 352; Third switching valve 353; Fourth switching valve 354; Fourth pipe 355; Fifth pipe 356; Third refrigerant branch 360; Cooling module 370; First housing 371; cooling chamber 372; second refrigerant inlet 373; second refrigerant outlet 374; refrigerator 380; cold end 381; hot end 382; first connecting part 391; first protrusion 392; second housing 400; heating chamber 410; fourth refrigerant inlet 411; fourth refrigerant outlet 412; second connecting part 421; second protrusion 422; economizer 500; third refrigerant outlet 510; compressor 600; third refrigerant inlet 610. Detailed Implementation

[0027] The following reference Figures 1 to 6 This description pertains to an air conditioning unit and its outdoor unit according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0028] Unless otherwise defined, the terms "set", "mount", "connected", "link", "fixed", "coupled" and the like are to be construed in their broadest possible sense, such as to include fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or connections through intermediate media; or connections between internal components of two elements, or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art should be able to understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0029] In addition, in the description of the present embodiment, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. That is, in the description of the present embodiment, the first feature "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "below", "under" or "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0030] In the description of the present embodiment, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The outdoor unit of the air conditioning unit according to the embodiments of the present application will be described below with reference to the accompanying drawings.

[0032] As shown in Figures 1-6 The outdoor unit of the air conditioning unit according to the embodiments of the present application includes a refrigeration system, a frequency converter 100, a switch assembly, a first refrigerant branch 310 and a first pipeline 320.

[0033] The refrigeration system includes a condenser 200 and a compressor 600, and the frequency converter 100 is used to control the frequency of the compressor 600, and the frequency converter 100 is connected with a heat exchange structure 110 for cooling. The heat exchange structure 110 has a first refrigerant inlet 111, so that the refrigerant from the outside can enter the heat exchange structure 110 through the first refrigerant inlet 111, so that the heat exchange structure 110 cools the frequency converter 100.

[0034] The heat exchange structure 110 is connected with the condenser 200 through a first pipe 320 and a first refrigerant branch 310, and a switch assembly. The first pipe 320 and the first refrigerant branch 310 are connected in parallel. The switch assembly is configured to switch at least one of the first pipe 320 and the first refrigerant branch 310 to an on state. A cooling module 370 is arranged on the first refrigerant branch 320, and the cooling module 370 is used to cool the refrigerant flowing through the first refrigerant branch 310.

[0035] The condenser 200 has a first refrigerant outlet 210. The first refrigerant branch 310 is provided with a cooling module 370 for cooling the refrigerant. The refrigerant in the first refrigerant branch 310 is cooled by the cooling module 370 when flowing through the cooling module 370, thereby reducing the temperature of the refrigerant discharged from the first refrigerant branch 310.

[0036] The first refrigerant branch 310 is connected to the first refrigerant inlet 111 and the first refrigerant outlet 210 at two ends, respectively. The first pipe 320 is connected to the first refrigerant inlet 111 and the first refrigerant outlet 210 at two ends, respectively.

[0037] The switch assembly is used to control one of the first refrigerant branch 310 and the first pipe 320 to be on. That is, the switch assembly controls the first refrigerant branch 310 to be on, and the first pipe 320 to be off, so that the refrigerant flowing out of the condenser 200 flows into the heat exchange structure 110 through the first refrigerant branch 310; or the switch assembly controls the first pipe 320 to be on, and the first refrigerant branch 310 to be off, so that the refrigerant flowing out of the condenser 200 flows into the heat exchange structure 110 through the first pipe 320.

[0038] The working mode of the outdoor unit of the air conditioning unit according to the embodiments of the present application will be described below with reference to the accompanying drawings.

[0039] When the condenser 200 is working normally, the switch assembly controls the first pipe 320 to be on, so that the refrigerant flowing out of the first refrigerant outlet 210 of the condenser 200 flows into the heat exchange structure 110 through the first pipe 320 and the first refrigerant inlet 111, and the heat exchange structure 110 cools the frequency converter 100.

[0040] When the temperature of the refrigerant discharged from the condenser 200 is too high and cannot maintain the frequency converter 100 in the normal working range, for example, the temperature of the frequency converter 100 exceeds 45℃, the switch assembly controls the first refrigerant branch 310 to be on, so that the refrigerant flowing out of the first refrigerant outlet 210 of the condenser 200 flows through the first pipe 320 and the cooling module 370, and the cooling module 370 cools the refrigerant. The cooled refrigerant then flows into the heat exchange structure 110 through the first refrigerant inlet 111, and the heat exchange structure 110 cools the frequency converter 100, thereby preventing the frequency converter 100 from overheating.

[0041] Compared with the related art, the outdoor unit of the air conditioning unit of the embodiment of the utility model has the cooling module 370 arranged on the first refrigerant branch 310, when the refrigerant temperature flowing out of the condenser 200 is high, the switch assembly can be switched to turn on the first refrigerant branch 310 and make the cooling module 370 cool the refrigerant temperature flowing out of the condenser 200, so that the refrigerant temperature entering the heat exchange structure 110 is reduced, and the problem of overheat of the frequency converter 100 is avoided. And when the refrigerant temperature flowing out of the condenser 200 is normal, the switch assembly can be switched to turn on the first pipeline 320, so that the refrigerant flowing out of the condenser 200 directly enters the heat exchange structure 110 without additional cooling of the refrigerant, thereby avoiding the temperature of the frequency converter 100 being too low and ensuring that the frequency converter 100 can work normally, so that the frequency converter 100 of the embodiment of the utility model will not have the problem of too high operating temperature or too low operating temperature, and the frequency converter 100 can operate within a normal temperature range.

[0042] In some embodiments, as shown in Figures 1-3 The switch assembly includes a first switch valve 351 and a second switch valve 352, the first switch valve 351 is arranged on the first refrigerant branch 310, so that the first switch valve 351 controls the conduction or disconnection of the first refrigerant branch 310, and the second switch valve 352 is arranged on the first pipeline 320, so that the second switch valve controls the conduction or disconnection of the first refrigerant branch 310.

[0043] That is, when the condenser 200 works normally, the first switch valve 351 controls the first refrigerant branch 310 to be disconnected, the second switch valve 352 controls the first pipeline 320 to be turned on, the refrigerant passes through the first pipeline 320 and then enters the heat exchange structure 110 through the first refrigerant inlet 111, and the heat exchange structure 110 cools the frequency converter 100.

[0044] When the refrigerant temperature flowing out of the condenser 200 is high, the first switch valve 351 controls the first refrigerant branch 310 to be turned on, the second switch valve 352 controls the first pipeline 320 to be disconnected, the refrigerant passes through the first pipeline 320 and then enters the heat exchange structure 110 through the first refrigerant inlet 111, and the heat exchange structure 110 cools the frequency converter 100. Therefore, the outdoor unit of the air conditioning unit of the embodiment of the utility model not only has a simple structure and is easy to assemble, but also reduces the manufacturing cost. Moreover, the first switch valve 351 and the second switch valve 352 control the conduction or disconnection of the first refrigerant branch 310 and the first pipeline 320 respectively, which is convenient to operate and improves the practicability.

[0045] Optionally, the first switch valve 351 and the second switch valve 352 can be solenoid valves.

[0046] In some embodiments, the switch assembly is a three-way valve (not shown in the figures), the three-way valve has two outlets and one inlet, the inlet of the three-way valve is connected to the first refrigerant inlet 111, and the two outlets of the three-way valve are connected to the inlet end of the first refrigerant branch 310 and the inlet end of the first pipeline 320 respectively, so that the inlet of the three-way valve is switched to communicate with one of the two outlets, thereby controlling the conduction or disconnection of the first refrigerant branch 310 and the first pipeline 320.

[0047] In some embodiments, as shown in Figures 1-4 The cooling module 370 includes a first shell 371 and a refrigeration device 380, the first shell 371 defines a cooling cavity 372, and a second refrigerant inlet 373 and a second refrigerant outlet 374 that communicate with the cooling cavity 372. The refrigeration device 380 has a cold end 381 that generates cold energy after being powered on, and the cold end 381 is connected to the first shell 371 so that the cold end 381 can cool the refrigerant in the cooling cavity 372. That is, at least part of the cold end 381 of the refrigeration device 380 directly extends into the cooling cavity 372; or the cold end 381 of the refrigeration device 380 is arranged on the first shell 371, and the surface of the cold end 381 of the refrigeration device 380 forms part of the cooling cavity 372; or the cold end 381 of the refrigeration device 380 is connected to the outer surface of the first shell 371, so that the cold energy of the cold end 381 of the refrigeration device 380 is conducted to the cooling cavity 372 through the first shell 371.

[0048] The first refrigerant branch 310 includes a second pipeline 311 and a third pipeline 312, one end of the second pipeline 311 is connected to the first refrigerant outlet 210, and the other end of the second pipeline 311 is connected to the second refrigerant inlet 373; one end of the third pipeline 312 is connected to the second refrigerant outlet 374, and the other end of the third pipeline 312 is connected to the first refrigerant inlet 111.

[0049] That is, when the refrigerant enters the first refrigerant branch 310, it first passes through the second pipeline 311 and enters the cooling cavity 372 through the second refrigerant inlet 373, so that the refrigerant is cooled in the cooling cavity 372. The cooled refrigerant is discharged from the second refrigerant outlet 374 and enters the third pipeline 312 to transport the refrigerant to the heat exchange structure 110 through the third pipeline 312. Cooling the refrigerant by the cooling module 370 not only reduces the temperature of the refrigerant to prevent the frequency converter 100 from overheating, but also simplifies the structure and is easy to manufacture.

[0050] Optionally, the refrigeration device 380 is a semiconductor refrigeration device 380. Thus, by using the thermoelectric effect of the semiconductor refrigeration device 380, the semiconductor refrigeration device 380 generates cold energy when powered on, which makes the structure of the cooling module 370 simpler and reduces the manufacturing difficulty of the cooling module 370.

[0051] Further, the cooling module 370 further comprises a first heat exchange member, the first heat exchange member comprising a first connecting portion 391 and a plurality of first protruding portions 392. The first connecting portion 391 is connected with the cold end 381, and the plurality of first protruding portions 392 are connected with the first connecting portion 391 and are spaced apart, and at least part of each first protruding portion 392 is arranged in the cooling cavity 372. That is, by arranging the first heat exchange member on the cold end 381, the contact area with the refrigerant is increased by the plurality of first protruding portions 392 on the first heat exchange member, and when the cold end 381 releases the cold energy outward, the first heat exchange member can fully exchange heat with the refrigerant, and therefore the cooling effect of the cooling module 370 on the refrigerant is further improved.

[0052] For example Figure 4 As shown in FIG. 5, each first protruding portion 392 is in a sheet shape, and the plurality of first protruding portions 392 are spaced apart in the up-down direction, and one end of each first protruding portion 392 is connected with the first connecting portion 391, so that the first connecting portion 391 uniformly conducts the cold energy of the cold end 381 to the plurality of first protruding portions 392.

[0053] In some embodiments, a thermally conductive grease is coated between the first connecting portion 391 and the cold end 381, so as to reduce the thermal resistance between the first connecting portion 391 and the cold end 381 and reduce the loss of cold energy.

[0054] In some embodiments, as shown in FIG. 5, Figure 4 As shown in FIG. 5, the second refrigerant outlet 374 is arranged at the bottom of the first shell 371. It can be understood that when the temperature of the refrigerant is high, part of the refrigerant will be in a gaseous state. By arranging the second refrigerant outlet 374 at the bottom of the first shell 371, the liquid refrigerant which absorbs more cold energy and has a lower temperature is easy to be discharged through the second refrigerant outlet 374, while the gaseous refrigerant is not easy to be discharged through the second refrigerant outlet 374, thereby prolonging the residence time of the gaseous refrigerant in the cooling cavity 372 and enabling the gaseous refrigerant to fully absorb the cold energy. Therefore, the cooling effect of the cooling module 370 is further improved.

[0055] In some embodiments, as shown in FIG. 5, Figure 3 and Figure 5 As shown in FIG. 5, the outdoor unit of the air conditioning unit further comprises an economizer 500, a compressor 600, a second shell 400 and a connecting assembly.

[0056] The economizer 500 is connected with the condenser 200, so that part of the refrigerant in the condenser 200 can flow into the economizer 500.

[0057] As Figure 4As shown, the second shell 400 defines a heating cavity 410, and a fourth refrigerant inlet 411 and a fourth refrigerant outlet 412 in communication with the heating cavity 410, and the compressor 600 has a third refrigerant inlet 610, and the third refrigerant inlet 610 of the compressor 600 is in communication with the fourth refrigerant outlet 412 through a fifth pipeline 356. The refrigerator 380 further has a hot end 382 generating heat after being powered on, and the hot end 382 is connected with the second shell 400, so that the hot end 382 can heat the refrigerant in the heating cavity 410. That is, at least part of the hot end 382 of the refrigerator 380 directly extends into the heating cavity 410; or the hot end 382 of the refrigerator 380 is arranged on the second shell 400, and a surface of the hot end 382 of the refrigerator 380 forms part of the heating cavity 410; or the hot end 382 of the refrigerator 380 is connected with an outer surface of the second shell 400, so that heat of the hot end 382 of the refrigerator 380 is conducted to the heating cavity 410 through the second shell 400.

[0058] The connecting assembly includes the fourth pipeline 355 and a third switch valve 353, and the economizer 500 has a third refrigerant outlet 510, and two ends of the fourth pipeline 355 are connected with the fourth refrigerant inlet 411 and the third refrigerant outlet 510 respectively, and the third switch valve 353 is arranged on the fourth pipeline 355.

[0059] That is, the connecting assembly controls the fourth refrigerant inlet 411 of the second shell 400 to be in communication with or disconnected from the third refrigerant outlet 510 of the economizer 500. After the semiconductor refrigerator 380 is powered on, the hot end 382 generates heat, and the third switch valve 353 controls the fourth refrigerant inlet 411 of the second shell 400 to be in communication with the third refrigerant outlet 510 of the economizer 500, so that the refrigerant in the economizer 500 enters the heating cavity 410 through the fourth refrigerant inlet 411, so that the hot end 382 heats the refrigerant, and the refrigerant is further converted into a gaseous state. The refrigerant after heat exchange is discharged from the heating cavity 410 through the fourth refrigerant outlet 412, and enters the compressor 600 through the third refrigerant inlet 610 of the compressor 600. Thus, the heat generated by the hot end 382 is fully utilized, and the energy utilization efficiency is improved.

[0060] Further, the outdoor unit of the air conditioning unit further includes a third refrigerant branch 360 and a fourth switch valve 354. Two ends of the third refrigerant branch 360 are connected with the third refrigerant outlet 510 of the economizer 500 and the third refrigerant inlet 610 of the compressor 600 respectively, and the fourth switch valve 354 is arranged on the third refrigerant branch 360.

[0061] The third switch valve 353 is controlled to make the fourth pipeline 355 conductive, and the refrigerant in the economizer 500 enters the compressor 600 in sequence through the second pipeline 311 and the semiconductor refrigerator 380; or the fourth switch valve 354 is controlled to make the third refrigerant branch 360 conductive, and the refrigerant in the economizer 500 directly enters the compressor 600 through the third refrigerant branch 360; or the third switch valve 353 and the fourth switch valve 354 are controlled to make the fourth pipeline 355 and the third refrigerant branch 360 conductive, and the refrigerant in the economizer 500 enters the compressor 600 in sequence through the second pipeline 311, the semiconductor refrigerator 380 and the third refrigerant branch 360.

[0062] In some embodiments, as shown in FIG. Figure 4 The outdoor unit of the air conditioning unit further includes a second heat exchange member, the second heat exchange member includes a second connecting portion 421 and a plurality of second protruding portions 422, the second connecting portion 421 is connected with the hot end 382, the plurality of second protruding portions 422 are all connected with the second connecting portion 421, and the plurality of second protruding portions 422 are arranged at intervals, and at least part of each second protruding portion 422 is arranged in the heating cavity 410. That is, by installing the second heat exchange member on the hot end 382, the contact area with the refrigerant is increased by the plurality of second protruding portions 422 on the second heat exchange member, and when the hot end 382 releases heat outward, the second heat exchange member can fully exchange heat with the refrigerant, thereby further improving the heating effect of the cooling module 370 on the refrigerant, so that the refrigerant can be more fully converted into a gaseous state.

[0063] For example Figure 4 Each second protruding portion 422 is in the shape of a sheet, and the plurality of second protruding portions 422 are arranged at intervals in the up-down direction, and one end of each second protruding portion 422 is connected with the second connecting portion 421, so that the second connecting portion 421 uniformly conducts the heat of the hot end 382 to the plurality of second protruding portions 422.

[0064] In some embodiments, a thermally conductive grease is coated between the second connecting portion 421 and the hot end 382, thereby reducing the thermal resistance between the first connecting portion 391 and the cold end 381 and reducing the loss of heat.

[0065] In some embodiments, as shown in FIG. Figure 4 The fourth refrigerant outlet 412 is arranged at the top of the second shell 400. By arranging the fourth refrigerant outlet 412 at the top of the second shell 400, the gaseous refrigerant is easily discharged through the fourth refrigerant outlet 412. The liquid refrigerant is located at the bottom of the heating cavity 410 and is not easily discharged through the second refrigerant outlet 374, thereby prolonging the residence time of the liquid refrigerant in the heating cavity 410, so that the liquid refrigerant can be fully converted into a gaseous state.

[0066] In some embodiments, the outdoor unit of the air conditioning unit also comprises a collection module for acquiring a temperature parameter of the frequency converter 100 and a control module, the control module being configured to control one of the first refrigerant branch 310 and the first pipeline 320 to be turned on according to the temperature parameter. Wherein, when the temperature parameter is greater than or equal to a preset temperature value, the first switch valve 351 is controlled to make the first refrigerant branch 310 turned on. The temperature of the frequency converter 100 is monitored by the collection module, and one of the first refrigerant branch 310 and the first pipeline 320 is switched to be turned on by the control module, so as to accurately control the temperature of the refrigerant flowing into the heat exchange structure 110 of the frequency converter 100, and ensure that the frequency converter 100 operates within a normal temperature range.

[0067] Specifically, when the temperature parameter of the frequency converter 100 acquired by the collection module is greater than or equal to a preset temperature value, for example, the temperature parameter exceeds 45℃, the control module makes the first switch valve 351 control the first refrigerant branch 310 to be turned on, and makes the second switch valve 352 control the first pipeline 320 to be turned off, so that the refrigerant passes through the first pipeline 320 and then enters the heat exchange structure 110 through the first refrigerant inlet 111, and the heat exchange structure 110 cools the frequency converter 100. When the temperature parameter of the frequency converter 100 acquired by the collection module is less than the temperature value, the control module makes the first switch valve 351 control the first refrigerant branch 310 to be turned off, and makes the second switch valve 352 control the first pipeline 320 to be turned on, so that the refrigerant passes through the first pipeline 320 and then enters the heat exchange structure 110 through the first refrigerant inlet 111, and the heat exchange structure 110 cools the frequency converter 100.

[0068] Optionally, the collection module is a temperature sensor. The collection module is arranged on the frequency converter 100.

[0069] In some embodiments, the outdoor unit of the air conditioning unit also comprises a storage module, the storage module being configured to store a preset temperature value, and the storage module being electrically connected with the control module. Therefore, the control module can read the preset temperature value data in the storage module, so that the control module can adjust the first switch valve 351 and the second switch valve 352 according to the preset temperature value data.

[0070] Further, when the temperature parameter of the frequency converter 100 acquired by the acquisition module is greater than or equal to the preset temperature value, the control module controls the third switch valve 353 to open and the fourth switch valve 354 to close, so that the refrigerant flowing out of the economizer 500 enters the second shell 400 to be heated and then flows into the compressor 600, so as to fully utilize the heat generated by the hot end 382 of the semiconductor cooler 380; when the temperature parameter of the frequency converter 100 acquired by the acquisition module is less than the preset temperature value, the control module controls the third switch valve 353 to close and the fourth switch valve 354 to open, so that the refrigerant flowing out of the economizer 500 directly enters the compressor 600 through the third refrigerant branch 360.

[0071] In some embodiments, as shown in Figure 6 The heat exchange structure 110 includes a plurality of straight pipes 111 and a plurality of arc-shaped pipes 112, and the leading end of each straight pipe 111 is connected to the trailing end of another straight pipe 111 through an arc-shaped pipe 112. The inlet end of the straight pipe 111 and the arc-shaped pipe 112 at the most upstream one form a first refrigerant inlet 111. That is, through the cooperation of the plurality of straight pipes 111 and the plurality of arc-shaped pipes 112, the heat exchange structure 110 can be in full contact with the frequency converter 100, thereby improving the heat exchange effect of the heat exchange structure 110.

[0072] In some embodiments, as shown in Figure 3 and Figure 5 The outlet end of the heat exchange pipe is in communication with the compressor 600, so that the heat-exchanged refrigerant enters the compressor 600, and the compressor 600 is connected to the condenser 200, so that the refrigerant processed by the compressor 600 enters the condenser 200, thereby realizing the recycling use of the refrigerant.

[0073] At this point, those skilled in the art should recognize that although the present application has been shown and described in detail in the above embodiments, many other variations or modifications can be directly determined or deduced according to the disclosure of the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all these other variations or modifications.

Claims

1. An outdoor unit of an air conditioning package, characterized by comprising: The application relates to an air conditioning unit outdoor unit. The air conditioning unit outdoor unit comprises a refrigeration system, a frequency converter for controlling the frequency of the compressor, a heat exchange structure connected to the frequency converter for cooling the frequency converter, a first pipeline and a first refrigerant branch connected between the heat exchange structure and the condenser, and a switch assembly, wherein the first pipeline and the first refrigerant branch are arranged in parallel, and the switch assembly is configured to switch at least one of the first pipeline and the first refrigerant branch to an on state. The first refrigerant branch is provided with a cooling module for cooling the refrigerant flowing through the first refrigerant branch.

2. The air conditioning unit outdoor unit according to claim 1, wherein the switch assembly comprises a first switch valve arranged on the first pipeline and a second switch valve arranged on the first refrigerant branch.

3. The air conditioning unit outdoor unit according to claim 1, wherein the cooling module comprises a first shell defining a cooling cavity, a second refrigerant inlet and a second refrigerant outlet communicating with the cooling cavity, and a refrigeration device having a cold end generating cold energy after being powered on, and the cold end is connected to the first shell so that the cold end can cool the refrigerant in the cooling cavity. The first refrigerant branch comprises a second pipeline and a third pipeline, one end of the second pipeline is connected to the condenser, the other end of the second pipeline is connected to the second refrigerant inlet, one end of the third pipeline is connected to the second refrigerant outlet, and the other end of the third pipeline is connected to the heat exchange structure. The second refrigerant outlet is arranged at the bottom of the first shell.

4. The air conditioning unit outdoor unit according to claim 3, wherein the cooling module further comprises a first heat exchange member comprising a first connecting portion and a plurality of first protruding portions, the first connecting portion is connected to the cold end, the plurality of first protruding portions are connected to the first connecting portion, and the plurality of first protruding portions are arranged in a spaced manner, and at least part of each first protruding portion is arranged in the cooling cavity. The refrigeration device is a semiconductor refrigeration device. The application further relates to an air conditioning unit outdoor unit. The air conditioning unit outdoor unit comprises an economizer connected to the condenser, a second shell defining a heating cavity, a fourth refrigerant inlet and a fourth refrigerant outlet communicating with the heating cavity, the fourth refrigerant inlet is connected to the economizer, the fourth refrigerant outlet is connected to the compressor, and the refrigeration device further has a hot end generating heat after being powered on, and the hot end is connected to the second shell so that the hot end can heat the refrigerant in the heating cavity. The fourth refrigerant outlet is arranged at the top of the second shell.

5. The outdoor unit of the air conditioning package unit according to claim 3, characterized by The application further relates to an air conditioning unit outdoor unit.

6. The outdoor unit of the air conditioning package unit according to claim 3, characterized by The air conditioning unit outdoor unit comprises a second heat exchange member comprising a second connecting portion and a plurality of second protruding portions, the second connecting portion is connected to the hot end, the plurality of second protruding portions are connected to the second connecting portion, and the plurality of second protruding portions are arranged in a spaced manner, and at least part of each second protruding portion is arranged in the heating cavity. The application further relates to an air conditioning unit outdoor unit. The air conditioning unit outdoor unit comprises a collection module for acquiring a temperature parameter of the frequency converter. ​ 7. The outdoor unit of the air conditioning package unit according to claim 6, characterized by ​ ​ 8. The outdoor unit of the air conditioning package unit according to claim 1, characterized by ​ ​ a control module configured to control one of the first refrigerant branch and the first pipeline to be turned on according to the temperature parameter; wherein when the temperature parameter is greater than or equal to a preset temperature value, the first refrigerant branch is controlled to be turned on; The outdoor unit of the air conditioning unit further comprises a storage module configured to store the preset temperature value; the storage module is electrically connected with the control module.

9. The outdoor unit of the air conditioning unit according to claim 1, characterized in that, The heat exchange structure comprises a plurality of straight pipes and a plurality of arc-shaped pipes, the head end of each straight pipe is connected with the tail end of another straight pipe through the arc-shaped pipe; the inlet end of the straight pipe and the arc-shaped pipe at the most upstream one forms a first refrigerant inlet.

10. An air conditioning unit characterized by, The outdoor unit according to any one of claims 1-9.

Images