CN218119992U - Air conditioning system - Google Patents

Abstract

The utility model provides an air conditioning system, include: a refrigerant circulation line; the radiator comprises a heat transfer element and a heat exchange pipe fitting, the heat transfer element is used for contacting with the frequency converter, the heat exchange pipe fitting is arranged on the heat transfer element, and the heat exchange pipe fitting is communicated with a refrigerant circulating pipeline; the flow cross-sectional area of at least part of pipelines of the heat exchange pipe fittings is smaller than that of the refrigerant circulation pipeline, so that throttling is performed through the heat exchange pipe fittings. Through the technical scheme provided by the utility model, the higher technical problem of manufacturing cost of air conditioning system among the prior art can be solved.

Description

Air conditioning system

Technical Field

The utility model relates to an air conditioning system technical field particularly, relates to an air conditioning system.

Background

At present, an air conditioner outdoor unit in the prior art generally comprises a frequency converter, an electronic module in the frequency converter generates a large amount of heat in operation, the heat increases the refrigeration rate and the power of the air conditioner, and meanwhile, the heat also affects the normal operation of the frequency converter, so that the frequency converter is abnormal. Therefore, the frequency converter often needs to be cooled to ensure the normal operation of the frequency converter.

However, in the air conditioning system in the prior art, an additional throttling structure is often required to be arranged for throttling, for example, an electronic expansion valve is adopted for throttling, so that the overall manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an air conditioning system to solve the technical problem of high manufacturing cost of the air conditioning system in the prior art.

In order to achieve the above object, the present invention provides an air conditioning system, including: a refrigerant circulation line; the radiator comprises a heat transfer element and a heat exchange pipe fitting, the heat transfer element is used for contacting with the frequency converter, the heat exchange pipe fitting is arranged on the heat transfer element, and the heat exchange pipe fitting is communicated with a refrigerant circulating pipeline; the flow cross-sectional area of at least part of pipelines of the heat exchange pipe fitting is smaller than that of the refrigerant circulation pipeline, so that throttling is performed through the heat exchange pipe fitting.

Further, the air conditioning system further includes: and the flow valve is arranged on the refrigerant circulating pipeline and used for controlling the refrigerant flow of the refrigerant circulating pipeline through the flow valve.

Further, the air conditioning system further includes: the evaporator is communicated with the refrigerant circulating pipeline; the liquid storage device is communicated with the refrigerant circulation pipeline, is arranged between the radiator and the evaporator and is used for carrying out gas-liquid separation on the refrigerant;

or the gas-liquid separator is communicated with the refrigerant circulating pipeline, is arranged between the radiator and the evaporator and is used for carrying out gas-liquid separation on the refrigerant.

Further, the heat exchange pipe fitting comprises a heat exchange flat pipe, the heat exchange flat pipe is of a micro-channel flat pipe structure, the heat exchange flat pipe is installed on the heat transfer part and is communicated with the refrigerant circulation pipeline, and the flow cross-sectional area of the heat exchange flat pipe is smaller than that of the refrigerant circulation pipeline; or, the heat transfer pipe fitting includes flat heat transfer pipe, import takeover and be located flat heat transfer pipe and the import section of taking over between, and flat heat transfer pipe is microchannel flat tube structure, and flat heat transfer pipe installs on the heat transfer component, and the import takeover is connected with the access connection of flat heat transfer pipe, and import takeover protrusion sets up in the heat transfer component, and the import takeover communicates with refrigerant circulation pipeline, and the flow cross sectional area of throttle section is less than the flow cross sectional area of flat heat transfer pipe.

Furthermore, along the extension direction from the inlet connecting pipe to the refrigerant circulating pipeline, the flow cross-sectional area of the throttling section is gradually reduced.

Further, the heat exchange pipe member includes: the adapter is provided with a first communicating port, a second communicating port and a communicating channel communicated with the first communicating port and the second communicating port; wherein, first flat pipe detachably inserts and establishes in first intercommunication mouth department, and flat pipe detachably of second inserts and establishes in second intercommunication mouth department to make first flat pipe pass through adapter and the flat intercommunication of second.

Further, the adapter protrudes from the heat transfer element.

Furthermore, the adapter is of a square structure, the square structure is provided with an insertion surface, and a first communication port and a second communication port are arranged on the insertion surface; or the adapter is a U-shaped pipe, a first communication port is formed at one end of the U-shaped pipe, and a second communication port is formed at the other end of the U-shaped pipe; or, the adapter is the flat pipe of arc, and the flat pipe of arc has the first flat section, first transitional coupling section, the section of bending, second transitional coupling section and the flat section of second that connect gradually, and the one end that first transitional coupling section was kept away from to first flat section forms first intercommunication mouth, and the one end that second transitional coupling section was kept away from to the flat section of second forms second intercommunication mouth.

Further, the heat exchange pipe fitting still includes: heat exchange flat tubes; the connector is provided with a first connecting section, a transition section and a second connecting section which are sequentially connected, the first connecting section is of a flat tube structure matched with the heat exchange flat tube, and the first connecting section is used for being connected with the heat exchange flat tube; the second connecting section is of a circular tube structure matched with the refrigerant circulating pipeline and is used for being connected with the refrigerant circulating pipeline.

Further, the length of the cross section of the first connecting section is a, the height of the cross section of the first connecting section is b, and the diameter of the second connecting section is r;

wherein [2 (a + b) -2 pi r ]/2 pi r is less than or equal to 30 percent.

Further, the heat exchange pipe fitting still includes: heat exchange flat tubes; the connector, the connector is square structure, and square structure has relative first connecting face and the second of setting and connects the face, is provided with the flat mouth of pipe with the flat pipe intercommunication of heat transfer on the first connecting face, is provided with the pipe mouth with refrigerant circulation pipeline intercommunication on the second connecting face, still is provided with the connection chamber that all communicates with flat mouth of pipe and pipe mouth on the connector.

Further, the heat exchange pipe fitting still includes: heat exchange flat tubes; the connector comprises a main body part, a first connecting circular pipe and a second connecting circular pipe, wherein a first flat port and a second flat port are formed in the end face, close to the heat exchange flat pipe, of the main body part, and the first flat port and the second flat port are both used for being connected with the heat exchange flat pipe; the first connecting circular pipe is arranged on the end face, far away from the heat exchange flat pipe, of the main body part and is used for being connected with the refrigerant circulating pipeline; the second connecting circular pipe is arranged on the end face, far away from the heat exchange flat pipe, of the main body part, and the second connecting circular pipe is used for being connected with the refrigerant circulating pipeline.

Further, the heat exchange pipe fitting comprises a heat exchange flat pipe; the heat transfer element is of a plate-shaped structure, and the heat exchange flat tube is arranged on the plate surface of the heat transfer element; or the heat transfer element comprises a first heat transfer plate and a second heat transfer plate, and the heat exchange flat tube is arranged between the first heat transfer plate and the second heat transfer plate; or the heat transfer element and the heat exchange flat tube form an integrated structure so that the heat transfer element wraps at least part of the heat exchange flat tube.

Use the technical scheme of the utility model, through setting up the heat transfer flat tube into microchannel flat tube structure, can be convenient for effectively carry out the heat transfer, the flow cross sectional area through making at least partial pipeline of heat transfer pipe fitting is less than the flow cross sectional area of refrigerant circulation pipeline simultaneously, can be convenient for effectively play the throttle effect, and need not set up extra throttle structure on refrigerant circulation pipeline, simplified air conditioning system's structure, reduced air conditioning system's manufacturing cost.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of an air conditioning system provided according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an air conditioning system with an accumulator according to an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a heat sink with heat exchange flat tubes according to an embodiment of the present invention;

figure 4 shows a schematic structural diagram of a heat sink having an adapter with a square structure according to an embodiment of the present invention;

fig. 5 is a schematic structural view illustrating a heat transfer element and a flat heat exchange tube which are integrally formed according to an embodiment of the present invention;

figure 6 shows a schematic structural diagram of a heat sink having an adapter with a U-shaped tube according to an embodiment of the present invention;

figure 7 shows a schematic structural diagram of an adapter according to an embodiment of the present invention;

figure 8 shows a schematic structural diagram of an adapter according to a second embodiment of the present invention;

figure 9 shows a schematic structural diagram of an adapter according to a third embodiment of the present invention;

fig. 10 shows a schematic structural diagram of a connection head according to the fourth embodiment of the present invention;

FIG. 11 shows the dimensional schematic of FIG. 10;

fig. 12 is a schematic structural diagram of a connecting head according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a connection head according to a sixth embodiment of the present invention;

fig. 14 shows a schematic structural view of a heat exchange flat tube disposed on a heat transfer element according to an embodiment of the present invention;

fig. 15 is a schematic structural view illustrating a heat exchange flat tube and a heat transfer element integrally formed according to an embodiment of the present invention;

fig. 16 shows a schematic view of a microchannel structure of a heat exchange flat tube provided according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a refrigerant circulation line;

20. a heat sink; 21. a heat transfer member; 22. a heat exchange tube; 221. heat exchange flat tubes; 2211. a first flat tube; 2212. a second flat tube; 222. an inlet connection pipe; 223. a throttling section; 224. an adapter; 2241. a first communication port; 2242. a second communication port; 2243. a first flattened section; 2244. a first transitional coupling section; 2245. bending sections; 2246. a second transitional coupling section; 2247. a second flattened section; 225. a connector; 2251. a first connection section; 2252. a transition section; 2253. a second connection section; 2254. a flat pipe opening; 2255. a round pipe orifice; 2256. a main body portion; 22561. a first flat mouth; 22562. a second flat mouth; 2257. a first connecting circular tube; 2258. a second connecting circular tube;

30. a frequency converter;

40. a flow valve;

50. an evaporator;

60. a reservoir;

70. a condenser;

80. a compressor.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 16, the embodiment of the utility model provides an air conditioning system, this air conditioning system include refrigerant circulation pipeline 10, radiator 20 and converter 30, and radiator 20 includes heat transfer member 21 and heat exchange pipe fitting 22, and heat transfer member 21 is used for contacting with converter 30, and heat exchange pipe fitting 22 installs on heat transfer member 21, and heat exchange pipe fitting 22 communicates with refrigerant circulation pipeline 10. The flow cross-sectional area of at least part of the heat exchange pipe 22 is smaller than the flow cross-sectional area of the refrigerant circulation pipeline 10, so as to throttle the refrigerant through the heat exchange pipe 22.

By adopting the air conditioning system provided by the embodiment, the flow cross-sectional area of at least part of the pipelines of the heat exchange pipe 22 is smaller than that of the refrigerant circulation pipeline 10, so that the part of the pipelines of the heat exchange pipe 22 can effectively form throttling, and the effect of throttling the refrigerant in the refrigerant circulation pipeline 10 is achieved, therefore, other throttling pieces or a valve structure with a throttling function are not required to be added in the refrigerant circulation pipeline 10, the structure of the air conditioning system can be effectively simplified, and the manufacturing cost of the air conditioning system is convenient to reduce. Therefore, the air conditioning system provided by the embodiment can solve the technical problem of high manufacturing cost of the air conditioning system in the prior art.

In this embodiment, the air conditioning system further includes a condenser 70 and a compressor 80.

Specifically, the air conditioning system in this embodiment further includes a flow valve 40, and the flow valve 40 is disposed on the refrigerant circulation pipeline 10, so as to control the refrigerant flow rate of the refrigerant circulation pipeline 10 through the flow valve 40. With such a configuration, the flow valve 40 and the throttling structure formed by the pipes of which part of the flow cross-sectional areas of the heat exchange pipes 22 are smaller than the flow cross-sectional area of the refrigerant circulation pipe 10 can function as an electronic expansion valve, but the manufacturing cost can be effectively reduced. Specifically, the flow valve 40 in the present embodiment may be of a solenoid valve structure.

In this embodiment, the air conditioning system further includes an evaporator 50 and a reservoir 60, wherein the evaporator 50 is communicated with the refrigerant circulation pipeline 10; the accumulator 60 is communicated with the refrigerant circulation line 10, the accumulator 60 is disposed between the radiator 20 and the evaporator 50, and the accumulator 60 is used for gas-liquid separation of the refrigerant. Alternatively, the liquid reservoir 60 may be replaced with a gas-liquid separator that communicates with the refrigerant circulation line 10, is provided between the radiator 20 and the evaporator 50, and separates the refrigerant into gas and liquid. By adopting the structure, the gas-liquid separation can be conveniently carried out through the liquid storage device 60 or the gas-liquid separator so as to separate the gas and the liquid in the refrigerant, so that the refrigerant only passes through the liquid when flowing through the radiator 20, the large influence on the whole system caused by the overlarge pressure drop is prevented, and the whole operation stability of the air-conditioning system is ensured; meanwhile, the degree of supercooling can be increased by the radiator 20, ensuring that the two-phase refrigerant has a higher liquid content when entering the inlet of the evaporator 50.

Specifically, in an embodiment, the heat exchange pipe 22 includes a heat exchange flat pipe 221, the heat exchange flat pipe 221 is a micro-channel flat pipe structure, the heat exchange flat pipe 221 is installed on the heat transfer element 21, the heat exchange flat pipe 221 is communicated with the refrigerant circulation pipeline 10, and a flow cross-sectional area of the heat exchange flat pipe 221 is smaller than a flow cross-sectional area of the refrigerant circulation pipeline 10. By adopting the structure, the structure is simple, and the heat exchange flat pipe 221 only needs to have a flow cross-sectional area smaller than that of the refrigerant pipeline, so that the production and the manufacture are convenient.

In another embodiment, the heat exchange pipe 22 includes a heat exchange flat pipe 221, an inlet connection pipe 222, and a throttling section 223 located between the heat exchange flat pipe 221 and the inlet connection pipe 222, the heat exchange flat pipe 221 is a micro-channel flat pipe structure, the heat exchange flat pipe 221 is installed on the heat transfer element 21, the inlet connection pipe 222 is connected to an inlet of the heat exchange flat pipe 221, the inlet connection pipe 222 protrudes out of the heat transfer element 21, the inlet connection pipe 222 is communicated with the refrigerant circulation pipeline 10, and a flow cross-sectional area of the throttling section 223 is smaller than a flow cross-sectional area of the heat exchange flat pipe 221. By adopting the structure, the throttling section 223 is arranged, so that throttling can be conveniently and effectively carried out, and the throttling effect is ensured.

Specifically, the flow cross-sectional area of the throttling section 223 gradually decreases in the extending direction from the inlet connection pipe 222 to the refrigerant circulation line 10. By adopting the structure, the throttling can be performed step by step, and the throttling stability is improved.

In this embodiment, the heat exchange pipe member 22 includes a flat heat exchange pipe 221 and an adapter 224, the flat heat exchange pipe 221 includes a first flat pipe 2211 and a second flat pipe 2212 mounted on the heat transfer member 21 at intervals, and the adapter 224 has a first communication port 2241, a second communication port 2242, and a communication passage communicating with both the first communication port 2241 and the second communication port 2242; wherein, first flat pipe 2211 detachably inserts and establishes in first connecting opening 2241 department, and second flat pipe 2212 detachably inserts and establishes in second connecting opening 2242 department to make first flat pipe 2211 communicate through adapter 224 and second flat pipe 2212. Adopt such structure setting, be convenient for install and assemble, improved the convenience of operation, also improved the suitability of structure, when specifically using, first flat tub 2211 and the flat tub 2212 of second can be the same structure. Meanwhile, the manufacturing process of the heat exchange flat tube 221 is simplified, and a U-shaped flat tube does not need to be manufactured.

Specifically, the adapter 224 in this embodiment protrudes from the heat transfer element 21, so as to facilitate assembling and adjusting the adapter 224, and avoid the situation that the adapter 224 is installed on the heat transfer element and damages the heat transfer element 21 due to adjusting the position of the adapter 224.

The utility model discloses an in the embodiment one, adapter 224 is square structure, and square structure has the inserted surface, is provided with first intercommunication mouth 2241 and second intercommunication mouth 2242 on the inserted surface. By adopting the structure, the structure is simple, the production and the manufacture are convenient, and the installation operation such as the insertion and the butt joint is also convenient.

In the second embodiment of the present invention, an air conditioning system is provided, and the difference between the air conditioning system in this embodiment and the air conditioning system in the first embodiment is the structure of the adapter 224. The adapter 224 in this embodiment is a U-shaped tube, one end of which forms a first communication port 2241, and the other end of which forms a second communication port 2242. Specifically, first intercommunication mouth 2241 is the flat mouthful structure with the flat tub of 2211 looks adaptation of first, and second intercommunication mouth 2242 is the flat mouthful structure with the flat tub of 2212 looks adaptation of second. By adopting the structure, the structure is simple, the production and the manufacture are convenient, and the installation is also convenient. Specifically, the U-shaped pipe in this embodiment is made for the pipe, and the pipe is bent into U-shaped tubular structure and is comparatively common structure, and it is also comparatively convenient to carry out moulding respectively for the structure of first intercommunication mouth 2241 and second intercommunication mouth 2242 with two ports of U-shaped pipe, and consequently above-mentioned structure is convenient for simplify and is heat transfer pipe fitting 22's whole manufacturing process.

The third embodiment of the present invention provides an air conditioning system, wherein the difference between the air conditioning system of the present embodiment and the air conditioning system of the first embodiment is the structure of the adapter 224. Adapter 224 in this embodiment is the flat pipe of arc, and the flat pipe of arc has the first flat section 2243, first transitional coupling section 2244, the section 2245 of bending, second transitional coupling section 2246 and the second flat section 2247 that connects gradually, and the one end that first transitional coupling section 2244 was kept away from to first flat section 2243 forms first intercommunication mouth 2241, and the one end that second transitional coupling section 2246 was kept away from to second flat section 2247 forms second intercommunication mouth 2242. Adopt such structure setting, the adapter 224 of the flat pipe of arc is the closest with the structure of the flat pipe 221 of heat transfer, can be convenient for better through the flat pipe of arc to be connected with the flat pipe 2211 of first flat pipe 2211 and second, specifically, first flat section 2243 is connected with the flat pipe 2211 of first flat, and the flat section 2247 of second is connected with the flat pipe 2212 of second.

The fourth embodiment of the present invention provides an air conditioning system, which can be an improvement based on the air conditioning systems in all the above embodiments. The heat exchange pipe fitting 22 in this embodiment further includes a heat exchange flat pipe 221 and a connector 225, the connector 225 has a first connecting section 2251, a transition section 2252, and a second connecting section 2253 that are connected in sequence, the first connecting section 2251 is a flat pipe structure adapted to the heat exchange flat pipe 221, and the first connecting section 2251 is used to be connected to the heat exchange flat pipe 221; the second connection segment 2253 is a circular tube structure adapted to the refrigerant circulation pipeline 10, and the second connection segment 2253 is used for connecting with the refrigerant circulation pipeline 10. By adopting the structure, the heat exchange flat pipe 221 can be conveniently connected with the refrigerant circulating pipeline 10 by arranging the connector 225, so that the heat exchange flat pipe is convenient to mount and connect, and the convenience of assembly is improved.

Specifically, in this embodiment, the cross-section of the first connection section 2251 has a length a, the cross-section of the first connection section 2251 has a height b, and the diameter of the second connection section 2253 has a diameter r; wherein [2 (a + b) -2 pi r ]/2 pi r is less than or equal to 30 percent. With such a structural arrangement, it is possible to facilitate defining a difference between the flow cross-sectional area of the first connection section 2251 and the flow cross-sectional area of the second connection section 2253, avoiding an excessive pressure drop. Preferably, 20% ≦ 2 (a + b) -2 π r ]/2 π r ≦ 30% may be used to better limit the difference between the flow cross-sectional areas of the first connection section 2251 and the flow cross-sectional area of the second connection section 2253.

The fifth embodiment of the present invention provides an air conditioning system, and the difference between the fifth embodiment and the fourth embodiment lies in the difference of the structure of the connector 225. Heat transfer pipe fitting 22 in this embodiment still includes flat pipe 221 of heat transfer and connector 225, and connector 225 is square structure, and square structure has relative first connection face and the second of setting and connects the face, is provided with flat pipe port 2254 with the flat pipe 221 intercommunication of heat transfer on the first connection face, is provided with the pipe mouth 2255 with refrigerant circulation pipeline 10 intercommunication on the second connection face, still is provided with the connection chamber that all communicates with flat pipe port 2254 and pipe mouth 2255 on the connector 225. By adopting the structure, the structure is simple, the production and the manufacture are convenient, the connection and the assembly are convenient, and the convenience of the assembly is improved.

The sixth embodiment of the present invention provides an air conditioning system, and the difference between the sixth embodiment and the fourth embodiment lies in the difference of the structure of the connector 225. The heat exchange pipe fitting 22 in this embodiment further includes a heat exchange flat pipe 221 and a connector 225, the connector 225 includes a main body part 2256, a first connecting circular pipe 2257 and a second connecting circular pipe 2258, the main body part 2256 is provided with a first flat port 22561 and a second flat port 22562 on the end surface close to the heat exchange flat pipe 221, and the first flat port 22561 and the second flat port 22562 are both used for being connected with the heat exchange flat pipe 221; the first circular connecting pipe 2257 is disposed on an end surface of the main body 2256 away from the heat exchange flat pipe 221, and the first circular connecting pipe 2257 is used for connecting with the refrigerant circulation pipeline 10; the second connecting circular pipe 2258 is disposed on an end surface of the main body 2256 away from the heat exchange flat pipe 221, and the second connecting circular pipe 2258 is used for being connected to the refrigerant circulation line 10. Specifically, flat heat transfer pipe 221 in this embodiment includes first flat pipe 2211 and second flat pipe 2212, first flat pipe 2211 and the interval setting of second flat pipe 2212, first flat pipe 2211 is connected with first flat mouth 22561, second flat pipe 2212 is connected with second flat mouth 22562, through concentrating on main part 2256 is close to the terminal surface of flat heat transfer pipe 221 with first flat mouth 22561 and second flat mouth 22562, and set up first connecting pipe 2257 and second connecting pipe 2258 on main part 2256 keeps away from the terminal surface of flat heat transfer pipe 221, can be convenient for optimize the structural layout, improve the compactedness of structural layout.

Specifically, the heat exchange pipe member 22 in the above embodiment includes the heat exchange flat tubes 221; the heat transfer member 21 is of a plate-shaped structure, and the heat exchange flat tube 221 is mounted on the plate surface of the heat transfer member 21, so that the overall thickness of the heat exchange tube 22 is effectively reduced, the overall size is reduced, the reduction of the overall thickness is also beneficial to improving the heat dissipation efficiency, and the heat exchange flat tube 221 is closer to the heat source frequency converter 30; or, the heat transfer element 21 includes a first heat transfer plate and a second heat transfer plate, and the heat exchange flat tube 221 is installed between the first heat transfer plate and the second heat transfer plate, so as to better avoid heat dissipation of the heat exchange flat tube 221, and facilitate effective heat exchange with the frequency converter 30 through the first heat transfer plate and the second heat transfer plate; or, heat transfer member 21 forms the integrated into one piece structure with flat pipe 221 of heat transfer, so that heat transfer member 21 wraps up the at least partial setting of flat pipe 221 of heat transfer, so that avoid the thermal effluvium of the flat pipe 221 of heat transfer better, be convenient for effectively carry out the heat transfer through heat transfer member 21 and converter 30, also can effectively reduce radiator 20's whole thickness simultaneously, reduce whole size, the attenuate of whole thickness also is favorable to improving the radiating efficiency, make flat pipe 221 of heat transfer be close to the source converter 30 that generates heat more.

In the above embodiment, in order to effectively transfer heat, the heat transfer member 21 may be made of an aluminum profile and is transferred to the heat exchange flat tube 221 through the aluminum profile, a refrigerant flows through a micro channel of the heat exchange flat tube 221, and a part of heat of the heat exchange flat tube 221 is dissipated by natural convection of air, and the temperature in the heat exchange flat tube 221 may also be cooled.

Specifically, the flat heat exchange tubes 221 have microchannels, and the hydraulic equivalent diameter in the microchannel flow channel is less than or equal to 1mm, preferably, the hydraulic equivalent diameter interval is between 10um and 1000um, so that the microscale effect can be conveniently generated.

Specifically, the height of the heat exchange flat tubes 221 is X, the breakdown prevention height of the heat sink 20 is Y,

the actual value interval of X is more than or equal to 1 and less than or equal to 4,Y, and can be selected according to actual application situations. The reduction of the overall thickness of the heat sink 20 can be beneficial to improving the heat dissipation effect, and the heat dissipation flat tube is made to be closer to the heat source frequency converter 30.

The assembly sequence of the heat exchange pipe fitting 22 with the first flat pipe 2211 and the second flat pipe 2212 in the above embodiment is as follows: install flat pipe on heat transfer element 21, all install first flat pipe 2211 and second flat pipe 2212 on heat transfer element 21, be connected the both ends of adapter 224 with the first end of first flat pipe 2211 and the first end of second flat pipe 2212 respectively, connector 225 is all installed at the second end of first flat pipe 2211 and the second end of second flat pipe 2212 afterwards, connector 225 with the second end department of first flat pipe 2211's second end department and the connector 225 of second flat pipe 2212's second end department all is connected with refrigerant circulation pipeline 10 afterwards.

By adopting the radiator 20 structure provided in the above embodiment, the process is conventional, the requirements on the heat transfer member 21 and the heat exchange flat tube 221 are not high, the combination mode is simple and convenient to splice, the structure is simple, and the production and manufacturing are convenient. The flat pipe quantity in above-mentioned embodiment is less, does not have the more condition of return circuit number, has cancelled the structure of collector tube, directly adopts single loop circulation, has greatly improved heat exchange efficiency. The flat pipe 221 of microchannel heat transfer is adopted to radiator 20 structure in the above-mentioned embodiment, and the flat pipe 221 of microchannel heat transfer's heat exchange efficiency is high, and thickness is thin for the flat pipe 221 of microchannel heat transfer more presses close to the source that generates heat, can greatly improve heat exchange efficiency.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the utility model discloses a radiator 20 can also play the throttle effect except playing the effect that reduces the converter temperature. The radiator 20 further promotes the cooling effect along with the increase in the flow velocity of the refrigerant while throttling. The electromagnetic valve with lower cost is added to the heat exchange flat tube 221, so that the throttling is realized, the flow can be controlled at the same time, and the function of an electronic expansion valve can be effectively replaced.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "above … …", "above … …", "above … … upper surface", "above", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. An air conditioning system, comprising:

a refrigerant circulation line (10);

the heat exchanger comprises a radiator (20) and a frequency converter (30), wherein the radiator (20) comprises a heat transfer element (21) and a heat exchange pipe fitting (22), the heat transfer element (21) is used for being in contact with the frequency converter (30), the heat exchange pipe fitting (22) is installed on the heat transfer element (21), and the heat exchange pipe fitting (22) is communicated with the refrigerant circulating pipeline (10);

the flow cross-sectional area of at least part of the heat exchange pipe fitting (22) is smaller than that of the refrigerant circulation pipeline (10), so that throttling is performed through the heat exchange pipe fitting (22).

2. The air conditioning system of claim 1, further comprising:

and the flow valve (40) is arranged on the refrigerant circulating pipeline (10) and used for controlling the refrigerant flow of the refrigerant circulating pipeline (10) through the flow valve (40).

3. The air conditioning system of claim 1, further comprising:

an evaporator (50) communicated with the refrigerant circulation pipeline (10);

the liquid storage device (60) is communicated with the refrigerant circulating pipeline (10), the liquid storage device (60) is arranged between the radiator (20) and the evaporator (50), and the liquid storage device (60) is used for performing gas-liquid separation on the refrigerant; alternatively, the first and second electrodes may be,

and the gas-liquid separator is communicated with the refrigerant circulating pipeline (10), is arranged between the radiator (20) and the evaporator (50), and is used for performing gas-liquid separation on the refrigerant.

4. The air conditioning system according to claim 1, wherein the heat exchange pipe (22) comprises a heat exchange flat pipe (221), the heat exchange flat pipe (221) is of a micro-channel flat pipe structure, the heat exchange flat pipe (221) is mounted on the heat transfer element (21), the heat exchange flat pipe (221) is communicated with the refrigerant circulation pipeline (10), and the flow cross-sectional area of the heat exchange flat pipe (221) is smaller than that of the refrigerant circulation pipeline (10); alternatively, the first and second liquid crystal display panels may be,

the heat exchange pipe fitting (22) comprises heat exchange flat pipes (221), inlet connecting pipes (222) and a throttling section (223) located between the heat exchange flat pipes (221) and the inlet connecting pipes (222), the heat exchange flat pipes (221) are of a micro-channel flat pipe structure, the heat exchange flat pipes (221) are installed on the heat transfer piece (21), the inlet connecting pipes (222) are connected with inlets of the heat exchange flat pipes (221), the inlet connecting pipes (222) protrude out of the heat transfer piece (21), the inlet connecting pipes (222) are communicated with the refrigerant circulating pipeline (10), and the flow cross-sectional area of the throttling section (223) is smaller than that of the heat exchange flat pipes (221).

5. The air conditioning system according to claim 4, wherein the flow cross-sectional area of the throttling section (223) is gradually reduced along the extension direction of the inlet connection pipe (222) to the refrigerant circulation pipeline (10).

6. Air conditioning system according to claim 1, characterized in that said heat exchange tubes (22) comprise:

flat pipe of heat transfer (221) and adapter (224), the flat pipe of heat transfer (221) is installed including the interval first flat pipe (2211) and the flat pipe of second (2212) on heat transfer member (21), adapter (224) have first intercommunication mouth (2241), second intercommunication mouth (2242) and with first intercommunication mouth (2241) with the intercommunication passageway that second intercommunication mouth (2242) all communicate;

the first flat pipe (2211) is detachably inserted into the first communicating opening (2241), and the second flat pipe (2212) is detachably inserted into the second communicating opening (2242), so that the first flat pipe (2211) is communicated with the second flat pipe (2212) through the adapter (224).

7. Air conditioning system according to claim 6, characterized in that the adapter (224) is arranged protruding from the heat transfer element (21).

8. The air conditioning system of claim 6,

the adapter (224) is of a square structure, the square structure is provided with an inserting surface, and the inserting surface is provided with the first communicating port (2241) and the second communicating port (2242); alternatively, the first and second electrodes may be,

the adapter (224) is a U-shaped pipe, one end of the U-shaped pipe forms the first communication port (2241), and the other end of the U-shaped pipe forms the second communication port (2242); alternatively, the first and second electrodes may be,

adapter (224) are the arc flat pipe, the arc flat pipe has first flat section (2243), first transitional coupling section (2244), the section of bending (2245), second transitional coupling section (2246) and second flat section (2247) that connect gradually, first flat section (2243) is kept away from the one end of first transitional coupling section (2244) forms first intercommunication mouth (2241), second flat section (2247) is kept away from the one end of second transitional coupling section (2246) forms second intercommunication mouth (2242).

9. Air conditioning system according to claim 1, characterized in that said heat exchange tubes (22) further comprise:

flat heat exchange tubes (221);

the heat exchanger comprises a connector (225), wherein the connector (225) is provided with a first connecting section (2251), a transition section (2252) and a second connecting section (2253) which are sequentially connected, the first connecting section (2251) is a flat tube structure matched with the heat exchange flat tube (221), and the first connecting section (2251) is used for being connected with the heat exchange flat tube (221); the second connecting section (2253) is a circular tube structure adapted to the refrigerant circulation pipeline (10), and the second connecting section (2253) is used for connecting the refrigerant circulation pipeline (10).

10. The air conditioning system of claim 9, wherein the first connection section (2251) has a cross-sectional length of a, the first connection section (2251) has a cross-sectional height of b, and the second connection section (2253) has a diameter of r;

wherein [2 (a + b) -2 pi r ]/2 pi r is less than or equal to 30 percent.

11. Air conditioning system according to claim 1, characterized in that said heat exchange tubes (22) further comprise:

flat heat exchange tubes (221);

connector (225), connector (225) are square structure, square structure has relative first connection face and the second that sets up and connects the face, be provided with on the first connection face with flat tub of mouth (2254) of heat transfer flat pipe (221) intercommunication, the second connect be connected be provided with pipe mouth (2255) of refrigerant circulation pipeline (10) intercommunication, still be provided with on connector (225) with flat pipe mouth (2254) with the connection chamber that all communicate of pipe mouth (2255).

12. Air conditioning system according to claim 1, characterized in that said heat exchange tubes (22) further comprise:

flat heat exchange tubes (221);

the heat exchanger flat tube (221) comprises a connecting head (225), wherein the connecting head (225) comprises a main body part (2256), a first connecting circular tube (2257) and a second connecting circular tube (2258), a first flat port (22561) and a second flat port (22562) are formed in the end face, close to the heat exchanger flat tube (221), of the main body part (2256), and the first flat port (22561) and the second flat port (22562) are used for being connected with the heat exchanger flat tube (221); the first connecting circular pipe (2257) is arranged on the end face, away from the heat exchange flat pipe (221), of the main body part (2256), and the first connecting circular pipe (2257) is used for being connected with the refrigerant circulating pipeline (10); the second connecting circular tube (2258) is arranged on the end face, away from the heat exchange flat tube (221), of the main body part (2256), and the second connecting circular tube (2258) is used for being connected with the refrigerant circulating pipeline (10).

13. Air conditioning system according to claim 1, characterized in that the heat exchange tube (22) comprises heat exchange flat tubes (221);

the heat transfer element (21) is of a plate-shaped structure, and the heat exchange flat tubes (221) are arranged on the plate surface of the heat transfer element (21); alternatively, the first and second electrodes may be,

the heat transfer element (21) comprises a first heat transfer plate and a second heat transfer plate, and the heat exchange flat tubes (221) are arranged between the first heat transfer plate and the second heat transfer plate; alternatively, the first and second electrodes may be,

the heat transfer element (21) and the heat exchange flat tube (221) form an integrated structure, so that the heat transfer element (21) wraps at least part of the heat exchange flat tube (221).

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