WO2022042564A1 - 换热器、电控盒以及空调系统 - Google Patents

换热器、电控盒以及空调系统 Download PDF

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Publication number
WO2022042564A1
WO2022042564A1 PCT/CN2021/114358 CN2021114358W WO2022042564A1 WO 2022042564 A1 WO2022042564 A1 WO 2022042564A1 CN 2021114358 W CN2021114358 W CN 2021114358W WO 2022042564 A1 WO2022042564 A1 WO 2022042564A1
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WIPO (PCT)
Prior art keywords
header
heat exchange
microchannel
heat exchanger
heat
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PCT/CN2021/114358
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English (en)
French (fr)
Inventor
张铁钢
王命仁
李兆辉
Original Assignee
广东美的暖通设备有限公司
美的集团股份有限公司
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Publication of WO2022042564A1 publication Critical patent/WO2022042564A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the present application relates to the technical field of air conditioning, and in particular, to a heat exchanger, an electric control box and an air conditioning system.
  • the air conditioner is provided with an economizer, and the economizer absorbs heat by throttling and evaporating the refrigerant itself, so that another part of the refrigerant is supercooled.
  • the commonly used economizer is the plate heat exchanger.
  • the plate heat exchanger is a kind of heat exchange formed by pressing thin metal plates into heat exchange plates with a certain corrugated shape, then stacking them, and tightening them with plywood and bolts. device. Channels are formed between the heat exchange plates, and the refrigerant flows through the channels to realize heat exchange through the heat exchange plates. Due to the limitation of the volume, the number of heat exchange plates, thus seriously affects the heat exchange efficiency of the plate heat exchanger.
  • the present application provides at least a heat exchanger, an electric control box and an air conditioning system.
  • a first aspect of the present application provides a heat exchanger, comprising:
  • a heat exchange main body comprising a first tube body and a second tube body which are nested with each other, the first tube body is provided with a plurality of first microchannels, and the second tube body is provided with a plurality of second microchannels;
  • the header assembly includes a first header and a second header, the first header is provided with a first header channel, and the first header channel is used for supplying the plurality of first micrometers to the The channel provides a first refrigerant flow and/or collects the first refrigerant flow flowing through the plurality of first microchannels, the second header is provided with a second header channel, and the second header channel is used for providing a second refrigerant flow to the plurality of second microchannels and/or collecting the second refrigerant flow flowing through the plurality of second microchannels so that the first refrigerant flowing through the plurality of first microchannels There is heat exchange between the stream and the second refrigerant stream flowing through the plurality of second microchannels.
  • a second aspect of the present application provides an electrical control box, comprising a box body and the above-mentioned heat exchanger, wherein the heat exchanger is arranged on the box body.
  • a third aspect of the present application provides an air-conditioning system, comprising a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, and the above-mentioned heat exchanger, wherein the heat exchanger is disposed between the outdoor heat exchanger and the above-mentioned heat exchanger.
  • the compressor provides a circulating refrigerant flow between the outdoor heat exchanger and the indoor heat exchanger through the four-way valve.
  • the heat exchanger of the present application includes a heat exchange main body and a header assembly, and the heat exchange main body includes a first pipe body and a second pipe body nested with each other, and the first pipe body is provided with a A plurality of first microchannels, and a plurality of second microchannels are arranged in the second tube body; because the characteristic length of the microchannels becomes smaller, the length of the heat exchange main board is shortened when the heat exchange amount is equal to that of the economizer , thereby reducing the volume of the heat exchanger; and the first tube body is sleeved on the outside of the second tube body, which can increase the heat exchange area between the first tube body and the second tube body, and improve the heat exchange efficiency of the heat exchanger .
  • heat exchange is performed between the first refrigerant flow that flows through the plurality of first microchannels and the second refrigerant flow that flows through the plurality of second microchannels, so that the second refrigerant flow absorbs heat from the first refrigerant flow, and then the second refrigerant flow is heated.
  • the second refrigerant stream realizes gasification, so that the first refrigerant stream realizes further subcooling.
  • FIG. 1 is a schematic structural diagram of an air-conditioning system in an embodiment of the present application.
  • Fig. 2 is the structural representation of the heat exchange main body of the heat exchanger in Fig. 1;
  • Fig. 3 is the structural representation of single-layer microchannel and multi-layer microchannel in Fig. 2;
  • FIG. 4 is a schematic structural diagram of an embodiment of a header assembly of the heat exchanger in FIG. 1;
  • FIG. 5 is a schematic structural diagram of another embodiment of the header assembly of the heat exchanger in FIG. 1;
  • FIG. 6 is a schematic structural diagram of another embodiment of the header assembly of the heat exchanger in FIG. 1;
  • FIG. 7 is a schematic structural diagram of a heat exchange main body of a heat exchanger according to another embodiment of the present application.
  • Fig. 8 is the three-dimensional structure schematic diagram of the first pipe body arrangement plane in Fig. 7;
  • FIG. 9 is a schematic structural diagram of a heat exchange main body of a heat exchanger according to another embodiment of the present application.
  • FIG 10 is a schematic structural diagram of the heat exchanger in Figure 9;
  • FIG. 11 is a schematic three-dimensional structural diagram of the electric control box in an embodiment of the present application after some components are hidden;
  • Fig. 12 is a three-dimensional schematic diagram of the heat sink in Fig. 11;
  • FIG. 13 is a schematic three-dimensional structure diagram of a heat sink in another embodiment of the present application.
  • FIG. 14 is a schematic three-dimensional structural diagram of a fixing bracket and a heat sink in an embodiment of the present application.
  • FIG. 15 is a schematic three-dimensional structural diagram of a fixing bracket and a heat sink in another embodiment of the present application.
  • FIG. 16 is a schematic three-dimensional structural diagram of a heat dissipation fixing plate and a heat sink in an embodiment of the present application
  • FIG. 17 is a schematic plan view of a heat dissipation fixing plate in an embodiment of the present application.
  • FIG. 18 is a cross-sectional structural schematic diagram of the cooperation of a heat sink and an electric control box in another embodiment of the present application.
  • 19 is a schematic cross-sectional structural diagram of a radiator in cooperation with an electric control box in another embodiment of the present application.
  • FIG. 20 is a schematic three-dimensional structural diagram of a heat dissipation fin and a heat sink in an embodiment of the present application
  • FIG. 21 is a schematic three-dimensional structural diagram of a heat dissipation fin and a heat sink in another embodiment of the present application.
  • FIG. 22 is a schematic three-dimensional structure diagram of a heat sink in another embodiment of the present application.
  • FIG. 23 is a schematic plan view of a radiator and an electric control box in another embodiment of the present application.
  • FIG. 24 is a cross-sectional structural schematic diagram of the cooperation of a radiator and an electric control box in another embodiment of the present application.
  • 25 is a schematic plan view of the structure of the radiator and the electric control box in another embodiment of the present application.
  • 26 is a cross-sectional structural schematic diagram of the cooperation of a heat sink and an electric control box in another embodiment of the present application.
  • FIG. 27 is a schematic plan view of the structure of the radiator and the electrical control box in another embodiment of the present application.
  • Fig. 28 is a cross-sectional structural schematic diagram of the radiator in Fig. 27 in cooperation with the electric control box;
  • 29 is a cross-sectional structural schematic diagram of the cooperation of a heat sink and an electric control box in another embodiment of the present application.
  • FIG. 30 is a schematic three-dimensional structural diagram of the electric control box in another embodiment of the present application after some components are hidden;
  • 31 is a schematic three-dimensional structural diagram of the electric control box in another embodiment of the present application after some components are hidden;
  • FIG. 32 is a schematic plan view of the electric control box in another embodiment of the present application after some components are hidden;
  • FIG. 33 is a schematic cross-sectional structural diagram of the electric control box in FIG. 32 .
  • FIG. 1 is a schematic structural diagram of an air conditioning system in an embodiment of the present application.
  • the air conditioning system 1 mainly includes a compressor 2 , a four-way valve 3 , an outdoor heat exchanger 4 , an indoor heat exchanger 5 , a heat exchanger 6 , an expansion valve 12 and an expansion valve 13 .
  • the expansion valve 13 and the heat exchanger 6 are arranged between the outdoor heat exchanger 4 and the indoor heat exchanger 5, and the compressor 2 provides a circulating flow between the outdoor heat exchanger 4 and the indoor heat exchanger 5 through the four-way valve 3. refrigerant flow.
  • the heat exchanger 6 includes a first heat exchange channel 610 and a second heat exchange channel 611 .
  • the first end of the first heat exchange channel 610 is connected to the outdoor heat exchanger 4 through the expansion valve 13
  • the second heat exchange channel 610 is connected to the outdoor heat exchanger 4 through the expansion valve 13 .
  • the first end of the second heat exchange channel 611 is connected to the second end of the first heat exchange channel 610 through the expansion valve 12, and the second end of the second heat exchange channel 611 is connected to the compressor 2
  • the suction port 22 is connected.
  • the path of the refrigerant flow is:
  • the path (main path) of the refrigerant flow of the first heat exchange channel 610 is: the first end of the first heat exchange channel 610 - the second end of the first heat exchange channel 610 - the indoor heat exchanger 5 .
  • the refrigerant flow path (auxiliary path) of the second heat exchange channel 611 is: the second end of the first heat exchange channel 610 - the expansion valve 12 - the first end of the second heat exchange channel 611 - the second end of the second heat exchange channel 611 Two-end - suction port 22 of compressor 2 .
  • the working principle of the air conditioning system 1 at this time is as follows: the outdoor heat exchanger 4 is used as a condenser, which outputs a medium-pressure and medium-temperature refrigerant flow through the expansion valve 13 (the temperature can be 40°, the liquid-phase refrigerant flow), and the first heat exchange
  • the refrigerant flow in the channel 610 is a medium-pressure and medium-temperature refrigerant flow.
  • the expansion valve 12 converts the medium-pressure and medium-temperature refrigerant flow into a low-pressure and low-temperature refrigerant flow (the temperature can be 10°, and the gas-liquid two-phase refrigerant flow).
  • the second heat exchange channel The refrigerant flow of 611 is a low-pressure and low-temperature refrigerant flow.
  • the low-pressure and low-temperature refrigerant flow in the second heat exchange channel 611 absorbs heat from the medium-pressure and medium-temperature refrigerant flow in the first heat exchange channel 610, and then the refrigerant flow in the second heat exchange channel 611 is vaporized, so that the first heat exchange channel
  • the refrigerant flow of 610 achieves further subcooling.
  • the vaporized refrigerant flow in the second heat exchange channel 611 is used to increase the enthalpy of the compressor 2 by air injection, so as to improve the refrigeration capacity of the air conditioning system 1 .
  • the expansion valve 12 is used as a throttling component of the second heat exchange channel 611 to adjust the flow rate of the refrigerant flow in the second heat exchange channel 611 .
  • the refrigerant flow in the first heat exchange channel 610 and the refrigerant flow in the second heat exchange channel 611 perform heat exchange, so as to realize subcooling of the refrigerant flow in the first heat exchange channel 610 . Therefore, the heat exchanger 6 can be used as an economizer of the air conditioning system 1 to improve the degree of subcooling, thereby improving the heat exchange efficiency of the air conditioning system 1 .
  • connection port 31 of the four-way valve 3 is connected to the connection port 33
  • connection port 32 of the four-way valve 3 is connected to the connection port 34 .
  • the refrigerant flow output from the compressor 2 through the discharge port 21 flows from the indoor heat exchanger 5 to the outdoor heat exchanger 4, and the indoor heat exchanger 5 is used as a condenser.
  • the refrigerant flow output by the indoor heat exchanger 5 is divided into two paths, one of which flows into the first heat exchange passage 610 (main passage), and the other flows into the second heat exchange passage 611 (auxiliary passage) through the expansion valve 12 .
  • the refrigerant flow in the second heat exchange channel 611 can also supercool the refrigerant flow in the first heat exchange channel 610 , and the refrigerant flow through the second heat exchange channel 611 supplements the compressor 2 and increases the enthalpy, thereby improving the performance of the air conditioner. heating capacity.
  • the present application further optimizes the following aspects based on the overall structure of the air conditioning system 1 described above:
  • the heat exchanger 6 includes a heat exchange main body 61, and the heat exchange main body 61 is provided with a plurality of microchannels 612, and the plurality of microchannels 612 are divided into a first microchannel and a second microchannel, wherein the first microchannel As the first heat exchange channel 610 of the heat exchanger 6 , the second microchannel serves as the second heat exchange channel 611 of the heat exchanger 6 . Therefore, the first microchannel 610 and the first heat exchange channel 610 use the same reference number, and the second microchannel 611 and the second heat exchange channel 611 use the same reference number.
  • the heat exchange body 61 may include a single plate body 613, and the plate body 613 is provided with a plurality of microchannels 612, and the plurality of microchannels 612 of the plate body 613 may be divided into alternately arranged first microchannels 610 and second microchannels 611.
  • the extending direction D1 of the first microchannel 610 and the extending direction D2 of the second microchannel 611 are parallel to each other.
  • the extending direction D1 of the first microchannel 610 and the extending direction D2 of the second microchannel 611 are the same.
  • the plate body 613 can be a flat tube, so that heat dissipation elements or electronic components can be arranged on the plate body 613 .
  • the plate body 613 may also be a carrier with other cross-section shapes, such as a cylinder, a rectangular parallelepiped, a cube, and the like.
  • the heat exchange body 61 may also include at least two plate bodies stacked on each other or two tube bodies nested with each other.
  • each microchannel 612 perpendicular to its extending direction may be a rectangle, and the side length of each microchannel 612 is 0.5mm-3mm.
  • the thickness between each microchannel 612 and the surface of the plate body 613 and between the microchannels 612 is 0.2mm-0.5mm, so that the microchannels 612 meet the requirements of pressure resistance and heat transfer performance.
  • the cross-sectional shape of the microchannel 612 may be other shapes, such as circular, triangular, trapezoidal, elliptical, or irregular.
  • the first refrigerant flow (ie, the medium-pressure and medium-temperature refrigerant flow) flows through the first microchannel 610
  • the second refrigerant flow (ie, the low-pressure and low-temperature refrigerant flow) flows through the first microchannel 610
  • the first refrigerant flow can be a liquid-phase refrigerant flow
  • the second refrigerant flow can be a gas-liquid two-phase refrigerant flow.
  • the second refrigerant flow absorbs heat from the first refrigerant flow in the first microchannel 610 during the flow along the second microchannel 611 and is further vaporized, so that the first refrigerant flow is further subcooled.
  • the heat exchanger based on the microchannel structure described above and below is not limited to the application scenario shown in FIG. 1 , so the first microchannel 610 and the second microchannel 611 and the The "first" and “second" in the two refrigerant streams are only used to distinguish different microchannels and refrigerant streams, and should not be regarded as limitations on specific applications of the microchannels and refrigerant streams.
  • the first refrigerant flow through the first microchannel 610 may absorb heat on the second refrigerant flow in the second microchannel 611, and the first refrigerant flow and the second refrigerant flow
  • the state is also not limited to the liquid phase or the gas-liquid two-phase as defined above.
  • the flow direction A1 of the first refrigerant flow is opposite to the flow direction A2 of the second refrigerant flow, so that there is a large temperature difference between the temperature of the first refrigerant flow and the temperature of the second refrigerant flow, and the first refrigerant flow is increased.
  • the heat exchange efficiency between the flow and the second refrigerant flow is increased.
  • the flow direction A1 of the first refrigerant flow may be the same as or perpendicular to the flow direction A2 of the second refrigerant flow.
  • the heat exchange body 61 may include at least two groups of first microchannels 610 and second microchannels 611, the at least two groups of first microchannels 610 and second microchannels 611 being spaced apart from each other along the vertical direction of the extending direction D1, As shown in FIG. 2 , the vertical direction is the width direction of the plate body 613 , and in other embodiments, the vertical direction may be the thickness direction of the plate body 613 .
  • a first preset number of microchannels in the plurality of microchannels 612 are divided into first microchannels 610
  • a second preset number of microchannels in the plurality of microchannels 612 are divided into second microchannels 611 .
  • the first microchannels 610 and the plurality of groups of second microchannels 611 are arranged alternately in turn, that is, the second microchannels 611 are arranged between the two groups of the first microchannels 610 , and the first microchannels 611 are arranged between the two groups of the second microchannels 611 .
  • the microchannels 610 are arranged so as to realize that the at least two groups of the first microchannels 610 and the second microchannels 611 are spaced apart from each other to form a heat exchanger 6 in which the first microchannels 610 and the second microchannels 611 are alternately arranged, as shown in FIG. 2 . Show.
  • the first preset number and the second preset number may be equal, such as 3; in other embodiments, the first preset number and the second preset number may not be equal, for example, the first preset number is 3, and the second preset number is 3. Set the number to 2.
  • both the first preset number and the second preset number may be 1, one microchannel in the plurality of microchannels 612 is the first microchannel 610 , and one microchannel disposed adjacent to the first microchannel 610 is.
  • the channel is the second microchannel 611 .
  • the cross-sectional area of the heat exchange main body 61 is the same as that of the conventional channel, and the refrigerant flow of the same mass and flow flows through the 10*10 microchannels 612 and 612 respectively. regular channel.
  • the characteristic length Dh of each microchannel 612 is 1/10 of the conventional channel, wherein the pressure drop is proportional to L/(Dh2), and if the same pressure drop is maintained, the length L of the microchannel 612 is 1/10 of the length of the conventional channel 100.
  • the effective heat exchange area of the microchannel 612 is 1/10 of the effective heat exchange area of the conventional channel.
  • the heat exchange main body 61 is provided with a plurality of first microchannels 610 and a plurality of second microchannels 611, so that the length of the heat exchange main body 61 is shortened. Reduce the volume of heat exchanger 6 .
  • the plurality of microchannels 612 may be configured as single-layer microchannels or multi-layer microchannels.
  • the cross-sectional area of the multi-layer microchannel is 4 times the cross-sectional area of the single-layer microchannel
  • the length of the single-layer microchannel is 4 times the length of the multi-layer microchannel
  • the refrigerant flow of the same mass and flow rate Flow through the single-layer microchannel and the multi-layer microchannel respectively
  • the flow rate of the multi-layer microchannel is 1/4 of the flow rate of the single-layer microchannel.
  • the pressure drop of the multi-layer microchannel is 1/48 of the pressure drop of the single-layer microchannel.
  • the heat transfer coefficient has a functional relationship with the flow rate of the refrigerant flow. The larger the flow rate, the larger the heat transfer coefficient, so the heat transfer of a single-layer microchannel is higher than that of a multi-layer microchannel. To sum up, under the condition that the requirement of heat transfer is satisfied, the larger the cross-sectional area of the plurality of microchannels 612 is, the pressure loss of the refrigerant flow can be reduced.
  • the heat exchanger 6 further includes a header assembly 62 , and the header assembly 62 and the heat exchange body 61 are both arranged horizontally, for example, the header assembly 62 and the heat exchange body 61 are both arranged along a horizontal plane.
  • the header assembly 62 is arranged vertically, that is, the header assembly 62 is arranged in a direction perpendicular to the horizontal plane (that is, the direction of gravity), and the heat exchange body 61 is arranged horizontally; or, the header assembly 62 is arranged vertically,
  • the heat exchange main body 61 is arranged vertically; or, the header assembly 62 is arranged horizontally, and the heat exchange main body 61 is arranged vertically.
  • the header assembly 62 includes a first header 621 and a second header 622, the first header 621 is provided with a first header channel, and the second header 622 is provided with a second header channel.
  • the cross-sectional shape of the heat exchanger 6 along the flow direction of the refrigerant flow (the first refrigerant flow or the second refrigerant flow) in the heat exchange main body 61 is an I-shape.
  • the cross-sectional shape of the heat exchanger 6 along the flow direction of the refrigerant flow in the heat exchange main body 61 may be L-shaped, U-shaped, G-shaped, or circular.
  • the first header channel is connected to the first microchannel 610 to provide the first refrigerant flow to the first microchannel 610 through the first header channel and/or collect the first refrigerant flow flowing through the first microchannel 610 .
  • the number of the first headers 621 is two, and the two first headers 621 are respectively connected to both ends of the first microchannel 610 so as to utilize the difference between the two first headers 621 .
  • One provides the first refrigerant flow to the first microchannel 610 ; and utilizes the other of the two first headers 621 to collect the first refrigerant flow flowing through the first microchannel 610 .
  • the first end of the first micro-channel 610 is connected to the outdoor heat exchanger 4 through one of the two first headers 621 via the expansion valve 13 so as to be in the cooling mode , to provide the first refrigerant flow to the first microchannel 610; the second end of the first microchannel 610 is connected to the indoor heat exchanger 5 through the other of the two first headers 621 to collect the flow through the first microchannel The first refrigerant flow of channel 610 .
  • the heating mode since the flow directions of the first refrigerant flow in the first microchannels 610 are opposite, the functions of the two first headers 621 are interchanged compared to the cooling mode.
  • the second header channel is connected to the second microchannel 611 to provide the second refrigerant flow to the second microchannel 611 through the second header channel and/or collect the second refrigerant flow flowing through the second microchannel 611 .
  • the number of the second headers 622 is two, and the two second headers 622 are respectively connected to both ends of the second microchannel 611 , so as to utilize the difference between the two second headers 622 One provides the second refrigerant flow to the second microchannel 611 ; and utilizes the other of the two second headers 622 to collect the second refrigerant flow flowing through the second microchannel 611 .
  • the first end of the second microchannel 611 is connected to the expansion valve 12 through one of the two second headers 622 to provide the second refrigerant to the second microchannel 611
  • the second end of the second microchannel 611 is connected to the suction port 22 of the compressor 2 through the other of the two second headers 622 to collect the second refrigerant flow flowing through the second microchannel 611 .
  • the same end of the first microchannel 610 in the at least two groups of the first microchannel 610 and the second microchannel 611 is connected to the same first header 621, and the at least two groups of the first microchannel 610 and The same end of the second microchannels 611 in the second microchannels 611 is connected to the same second header 622 , that is, the same end of all the first microchannels 610 of the heat exchanger 6 is connected to the same first header 621
  • the same end of all the second microchannels 611 of the heat exchanger 6 is connected to the same second header 622, which avoids setting a corresponding header for each microchannel and reduces the cost.
  • the extension directions of the first header 621 and the second header 622 can be adjusted according to the extension directions of the first microchannel 610 and the second microchannel 611, for example, they are arranged perpendicular to each other.
  • the first header 621 and the second header 622 are arranged at intervals along the extension direction of the heat exchange main body 61 , and the extension direction of the heat exchange main body 61 is the same as the extension direction D1 and the second extension direction of the first microchannel 610 .
  • the extension direction D2 of the microchannel 611 is the same, and the second microchannel 611 penetrates the first header 621 and is connected to the second header 622, wherein the first header 621 is arranged on the second header 622 and exchanges heat
  • the second microchannel 611 penetrates the first header 621 and is inserted into the second header 622 and fixed by welding, and the first microchannel 610 is inserted into the first header 621 and fixed by welding.
  • the first microchannel 610 may be inserted into the first header 621 after passing through the second header 622 .
  • the distance between the first header 621 and the second header 622 is R-2R, where R is the maximum cross-section of the first header 621 along the spacing direction of the first header 621 and the second header 622 size.
  • the cross-sectional shapes of the first header 621 and the second header 622 may both be circular, and R is the diameter of the first header 621 or the diameter of the second header 622 .
  • the cross-sectional shapes of the first header 621 and the second header 622 can be set to other shapes, such as oval, square, rectangle or irregular shape, when the first header 621 and the second header 622 When the cross-sectional shape of the header 622 is non-circular, R is the diameter of the circumscribed circle of the first header 621 or the second header 622 .
  • the distance between the first header 621 and the second header 622 can be larger, the distance between the first header 621 and the second header 622 and the heat exchange main body 61 can be facilitated. welding.
  • the second microchannel 611 located between the first header 621 and the second header 622 does not exchange heat with the first microchannel 610, by connecting the first header 621 and the second header 622 The distance between them is set smaller, the length of the second microchannel 611 between the first header 621 and the second header 622 can be reduced, and the heat exchange area of the second microchannel 611 can be increased.
  • first header 621 and the second header 622 may be welded together to reduce the distance between the first header 621 and the second header 622 .
  • first microchannel 610 can bypass the second header 622 and then be connected to the first header 621.
  • first microchannel 610 is disposed outside the second header 622 to bypass the second header.
  • the pipe 622 is then connected to the first header 621 .
  • second microchannel 611 may bypass the first header 621 and then be connected to the second header 622 .
  • the main header is divided into two headers
  • the header assembly 62 includes a main header 623 and a baffle plate 624, and the baffle plate 624 is arranged in the main header 623 for dividing the main header 623 into a first header
  • the pipe 621 and the second header 622 that is, the total header 623 is provided as the first header 621 and the second header 622 separated by the baffle plate 624 .
  • the first microchannel 610 penetrates the sidewall of the general header 623 and is inserted into the first header 621
  • the second microchannel 611 penetrates the sidewall of the general header 623 and
  • the baffle plate 624 is inserted into the second header 622 .
  • the second microchannel 611 may penetrate the sidewall of the general header 623 and be inserted into the second header 622, while the first microchannel 610 may penetrate the sidewall and partition of the general header 623
  • the flow plate 624 is inserted into the first header 621 .
  • the functions of the first header 621 and the second header 622 are simultaneously realized by a header 623 , which can reduce the cost of the header assembly 62 . cost and volume.
  • the baffle plate 624 may be used to divide the general header 623 into two first headers 621 or two second headers 622 .
  • one end of the first microchannel 610 penetrates through the side wall of the general header 623 and is inserted into one of the first headers 621
  • the other end of the first microchannel 610 penetrates the side of the general header 623 wall and inserted into another first header 621 therein.
  • one of the two first headers 621 is used to provide the first refrigerant flow to the first microchannel 610
  • the other of the two first headers 621 621 is used to collect the first refrigerant flow flowing through the first microchannel 610
  • the first microchannel 610 is a U-shaped flow path at this time.
  • one end of the second microchannel 611 penetrates the sidewall of the general header 623 and is inserted into one of the second headers 622
  • the other end of the second microchannel 611 penetrates the sidewall of the general header 623 and the baffle plate 624 and inserted into another second header 622 therein.
  • one of the two second headers 622 is used to provide the second refrigerant flow to the second microchannel 611
  • the other of the two second headers 622 622 is used to collect the second refrigerant flow flowing through the second microchannel 611
  • the second microchannel 611 is a U-shaped flow path at this time.
  • the diameter of the second header 622 is smaller than the diameter of the first header 621 , the first header 621 is sleeved outside the second header 622 , and the first microchannel 610 penetrates through the first header 621 .
  • the side wall of the header 621 is inserted into the first header 621 .
  • the second microchannel 611 penetrates the side walls of the first header 621 and the second header 622 and is inserted into the second header 622 .
  • the second header 622 may be sleeved on the outside of the first header 621, and at this time, the second microchannel 611 penetrates the side wall of the second header 622 and is inserted into the second header within the flow tube 622.
  • the first microchannel 610 penetrates the second header 622 and the sidewalls of the first header 621 and is inserted into the first header 621 .
  • the volume of the header assembly 62 can be reduced by the nested arrangement.
  • two first headers 621 may be nested with each other, or two second headers 622 may be nested with each other.
  • one end of the first microchannel 610 penetrates the side wall of the outer first header 621 and is inserted into the outer first header 621 .
  • the other end of the first microchannel 610 penetrates the side walls of the two first headers 621 and is inserted into the inner first header 621 .
  • the outer first header 621 is used to provide the first refrigerant flow to the first microchannel 610, and the inner first header 621 is used to collect the first refrigerant flow flowing through the first microchannel 610; or the inner side
  • the first header 621 is used to provide the first refrigerant flow to the first microchannel 610, and the first header 621 on the outside is used to collect the first refrigerant flow that flows through the first microchannel 610;
  • Channel 610 is a U-shaped flow path.
  • one end of the second microchannel 611 penetrates the side wall of the outer second header 622 and is inserted into the outer second header 622 .
  • the other end of the second microchannel 611 penetrates the side walls of the two second headers 622 and is inserted into the inner second header 622 .
  • the outer second header 622 is used to provide the second refrigerant flow to the second microchannel 611, and the inner second header 622 is used to collect the second refrigerant flow flowing through the second microchannel 611; or, The inner second header 622 is used to provide the second refrigerant flow to the second microchannel 611, and the outer second header 622 is used to collect the second refrigerant flow flowing through the second microchannel 611;
  • the microchannel 611 is a U-shaped flow path.
  • the heat exchanger 6 includes a heat exchange body 61
  • the heat exchange body 61 includes a first tube body 614 and a second tube body 615 which are nested with each other.
  • the first tube body 614 is provided with a plurality of first microchannels 610
  • the second tube body 615 is provided with a plurality of second microchannels 611.
  • the microchannels 612 shown in 2 are the same, so the length of the heat exchange main body 61 is shortened, thereby reducing the volume of the heat exchanger 6 .
  • the plurality of first microchannels 610 of the first tube body 614 serve as the first heat exchange channels 610 of the heat exchanger 6
  • the plurality of second microchannels 611 of the second tube body 615 serve as the second heat exchange channels of the heat exchanger 6 611.
  • the extending direction of the first microchannel 610 and the extending direction of the second microchannel 611 are parallel to each other, for example, the extending direction of the first microchannel 610 and the extending direction of the second microchannel 611 are the same.
  • the first tube body 614 is sleeved on the outside of the second tube body 615 , and at least one flat surface 616 is provided on the outer surface of the first tube body 614 to form the heat exchange contact surface of the first tube body 614 , As shown in Figure 8. Heat dissipation components or electronic components can be arranged on the plane 616 for ease of installation.
  • the second tube body 615 can be sleeved on the outside of the first tube body 614 .
  • the first refrigerant flow flows through a plurality of first microchannels 610
  • the second refrigerant flow flows through a plurality of second microchannels 611
  • the secondary refrigerant flow may be a gas-liquid two-phase refrigerant flow.
  • the second refrigerant stream absorbs heat from the first refrigerant stream of the plurality of first microchannels 610 during its flow along the plurality of second microchannels 611 and is further vaporized, so that the first refrigerant stream is further subcooled.
  • the first refrigerant flow and the second refrigerant flow may adopt other arrangements described above.
  • the cross-sectional area of the heat exchange main body 61 is increased, and the pressure loss of the refrigerant flow can be reduced.
  • the first tube body 614 is sleeved on the outside of the second tube body 615, which can increase the heat exchange area between the plurality of first microchannels 610 and the plurality of second microchannels 611, and increase the heat exchange area between the first heat exchange channels 610 and the second microchannels 611. The heat exchange efficiency between the heat exchange channels 611 .
  • the heat exchanger 6 further includes a header assembly 62, the header assembly 62 includes a first header 621 and a second header 622, the first header 621 is provided with a first header The second header 622 is provided with a second header channel.
  • the cross-sectional shape of the heat exchanger 6 is an I-shape, for example, the cross-sectional shape of the heat exchanger 6 along the flow direction of the refrigerant flow in the heat exchange main body 61 is an I-shape. In other embodiments, the cross-sectional shape of the heat exchanger 6 along the flow direction of the refrigerant flow in the heat exchange main body 61 may be L-shaped, U-shaped, G-shaped, or circular.
  • the first header channel is connected to the first microchannel 610 to provide the first refrigerant flow to the plurality of first microchannels 610 through the first header channel and/or to collect the first refrigerant flowing through the plurality of first microchannels 610 flow.
  • the number of the first headers 621 is two, and the two first headers 621 are respectively connected to both ends of the first pipe body 614 so as to use one of the two first headers 621 to connect to the plurality of first headers 621 .
  • the microchannel 610 provides the first refrigerant flow; and utilizes the other of the two first headers 621 to collect the first refrigerant flow flowing through the plurality of first microchannels 610 .
  • the second header channel is connected to the second microchannel 611 to provide the second refrigerant flow to the plurality of second microchannels 611 through the second header channel and/or collect the second refrigerant flowing through the plurality of second microchannels 611 flow.
  • the number of the second headers 622 is two, and the two second headers 622 are respectively connected to both ends of the second pipe body 615 , so as to use one of the two second headers 622 to connect to the plurality of second headers 622 .
  • the microchannel 611 provides the second refrigerant flow; and the second refrigerant flow flowing through the plurality of second microchannels 611 is collected by the other of the two second headers 622 .
  • the heat exchange body 61 may include at least two groups of first and second pipes 614 and 615 spaced apart from each other in a vertical direction of the extending direction.
  • the at least two groups of first pipe bodies 614 and second pipe bodies 615 may include a first group of first pipe bodies 614 and second pipe bodies 615 nested with each other, and a second group of first pipe bodies 614 nested with each other and the second pipe body 615, the first group of the first pipe body 614 and the second pipe body 615 nested with each other and the second group of the first pipe body 614 and the second pipe body 615 nested with each other along the vertical direction of the extending direction interval setting.
  • the same end of the first pipe body 614 in the at least two groups of the first pipe body 614 and the second pipe body 615 is connected to the same first header 621 , and the at least two groups of the first pipe body 614 and the second pipe body
  • the same end of the second pipe body 615 in 615 is connected to the same second header 622, which can reduce the cost.
  • the header assembly 62 can also be in the various header arrangements described above, such as the spaced arrangement of the first header 621 and the second header 622 described above, the overall header 623 and the spacer arrangement.
  • the arrangement of the flow plates 624, or the arrangement of the first header 621 and the second header 622 are nested with each other.
  • the first tube body 614 together with the first microchannel 610 on it and the second tube body 615 together with the second microchannel 611 on it can be matched with the above-mentioned collecting tube in the manner described above, which is not described here. Repeat.
  • the heat exchanger has a first plate body and a second plate body stacked on top of each other
  • the heat exchanger 6 includes a heat exchange body 61 , and the heat exchange body 61 includes a first plate body 631 and a second plate body 632 , and the first plate body 631 and the second plate body 632 are stacked on each other.
  • the first plate body 631 is provided with a plurality of first microchannels 610, and the second plate body 632 is provided with a plurality of second microchannels 611.
  • the microchannels 612 shown in 2 are the same, and are not repeated here. Therefore, the length of the heat exchange body 61 is shortened, thereby reducing the volume of the heat exchanger 6 .
  • the plurality of first microchannels 610 of the first plate body 631 serve as the first heat exchange channels 610 of the heat exchanger 6
  • the plurality of second microchannels 611 of the second plate body 632 serve as the second heat exchange channels of the heat exchanger 6 611.
  • the extending direction of the first microchannel 610 and the extending direction of the second microchannel 611 are parallel to each other, for example, the extending direction of the first microchannel 610 and the extending direction of the second microchannel 611 are the same.
  • the contact area between the first plate body 631 and the second plate body 632 is increased to increase the space between the first heat exchange channel 610 and the second heat exchange channel 611 heat exchange area and improve heat exchange efficiency.
  • the first refrigerant flow flows through a plurality of first microchannels 610
  • the second refrigerant flow flows through a plurality of second microchannels 611
  • the secondary refrigerant flow may be a gas-liquid two-phase refrigerant flow.
  • the second refrigerant stream absorbs heat from the first refrigerant stream of the plurality of first microchannels 610 during its flow along the plurality of second microchannels 611 and is further vaporized, so that the first refrigerant stream is further subcooled.
  • the first refrigerant flow and the second refrigerant flow may also adopt other arrangements described above.
  • the number of the first plate bodies 631 may be two, and the second plate body 632 is sandwiched between the two first plate bodies 631 , for example, the first plate body 631 , the second plate body 632 and the The first plate bodies 631 are stacked in sequence.
  • the second plate body 632 is sandwiched between the two first plate bodies 631, so that the second refrigerant flow of the second plate body 632 absorbs heat to the first refrigerant flow of the two first plate bodies 631 at the same time, Subcooling of the first refrigerant flow of the two first plates 631 is achieved.
  • the heat dissipation element or electronic element can be arranged to be thermally connected with the first plate body 631 , for example, the heat dissipation element or electronic element can be disposed on the surface of the first plate body 631 away from the second plate body 632 for easy installation.
  • the two first plate bodies 631 may be two independent plate bodies.
  • the two first plates 631 may also be integrally connected in a U-shape.
  • the first microchannels 610 in the two first plates 631 are connected in a U-shape, so that the first microchannels 610 The inlet and outlet are located on the same side of the heat exchange body 61 .
  • the number of the second plate bodies 632 may be two, and the first plate body 631 is sandwiched between the two second plate bodies 632 .
  • the heat dissipating element or the electronic element may be arranged to be thermally connected with the second plate body 632 .
  • the heat exchanger 6 further includes a header assembly 62.
  • the header assembly 62 includes a first header 621 and a second header 622.
  • the first header 621 is provided with a first header
  • the second header 622 is provided with a second header channel.
  • the cross-sectional shape of the heat exchanger 6 along the flow direction of the refrigerant flow in the heat exchange main body 61 is an I-shape.
  • the cross-sectional shape of the heat exchanger 6 along the flow direction of the refrigerant flow in the heat exchange main body 61 may be L-shaped, U-shaped, G-shaped, or circular.
  • the first header channel is connected to the first microchannel 610 to provide the first refrigerant flow to the plurality of first microchannels 610 through the first header channel and/or to collect the first refrigerant flowing through the plurality of first microchannels 610 flow.
  • the number of the first headers 621 is two, and the two first headers 621 are respectively connected to both ends of the first plate body 631, so as to use one of the two first headers 621 to connect to the plurality of first headers 621 .
  • the microchannel 610 provides the first refrigerant flow; and utilizes the other of the two first headers 621 to collect the first refrigerant flow flowing through the plurality of first microchannels 610 .
  • the second header channel is connected to the second microchannel 611 to provide the second refrigerant flow to the plurality of second microchannels 611 through the second header channel and/or collect the second refrigerant flowing through the plurality of second microchannels 611 flow.
  • the number of the second headers 622 is two, and the two second headers 622 are respectively connected to both ends of the second plate body 632 , so as to use one of the two second headers 622 to connect to the plurality of second headers 622 .
  • the microchannel 611 provides the second refrigerant flow; and the second refrigerant flow flowing through the plurality of second microchannels 611 is collected by the other of the two second headers 622 .
  • the heat exchange body 61 may include at least two groups of first and second plates 631 and 632 spaced apart from each other in a vertical direction of the extending direction.
  • the heat exchange main body 61 includes three groups of first plates 631 and second plates 632 , and the three groups of first plates 631 and second plates 632 are along the extending direction of the first microchannel 610 or The second microchannels 611 are arranged at intervals in the vertical direction of the extending direction.
  • the same end of the first plate body 631 in the at least two groups of the first plate body 631 and the second plate body 632 is connected to the same first header 621, and the at least two groups of the first plate body 631 and the second plate body
  • the same end of the second plate body 632 in the 632 is connected to the same second header 622, for example, the same end of all the first plate bodies 631 of the heat exchange main body 61 is connected to the same first header 621, heat exchange The same ends of all the second plates 632 of the main body 61 are connected to the same second header 622, thereby reducing the cost.
  • the first header 621 and the second header 622 are arranged at intervals along the extending direction of the heat exchange body 61 .
  • the second plate body 632 penetrates through the first header 621 and is inserted into the second header 622, wherein the first header 621 is disposed between the second header 622 and the heat exchange body 61, and the second plate body 632 penetrates through the first header 621 and is inserted into the second header 622 and fixed by welding, and the first plate body 631 is inserted into the first header 621 and fixed by welding.
  • the first plate body 631 may be connected to the first header 621 after passing through the second header 622 .
  • the distance between the first header 621 and the second header 622 is R-2R, where R is the maximum cross-section of the first header 621 along the spacing direction of the first header 621 and the second header 622 size.
  • the cross-sectional shapes of the first header 621 and the second header 622 may both be circular, and R is the diameter of the first header 621 or the diameter of the second header 622 . Further, as described above, when the cross-sectional shapes of the first header 621 and the second header 622 are non-circular, R is the diameter of the circumscribed circle of the first header 621 or the second header 622 .
  • the header assembly 62 can also be the various header arrangements described above, such as the arrangement of the overall header 623 and the baffle plate 624 described above, or the first header 621 and the second header The arrangement in which the flow tubes 622 are nested within each other.
  • the first plate body 631 together with the first microchannels 610 thereon and the second plate body 633 and the second microchannels 611 thereon can all be matched with the above-mentioned collectors in the manner described above, which is not described here. Repeat.
  • the above-mentioned heat exchanger 6 can also be used as a radiator (the radiator 6 will be described below).
  • the upper part is used to dissipate heat for the electronic control box 7 and the electronic components 71 inside it.
  • the heat sink 6 mentioned here should include the various forms of heat exchangers described above, and should not be limited to a specific embodiment.
  • the electric control box 7 may include a box body 72 and an electronic component 71 .
  • the box body 72 is provided with an installation cavity 721 , and the electronic component 71 is arranged in the installation cavity 721 .
  • the box body 72 is generally made of sheet metal, and the electronic components 71 disposed in the installation cavity 721 can generally be compressors, fans, capacitors, electrical controls, common mode inductors, and the like.
  • the box body 72 includes a top plate (not shown in the figure, arranged opposite to the bottom plate 723 to cover the opening of the installation cavity 721 ), a bottom plate 723 and a circumferential side plate 724 .
  • the side plate 724 is connected to the top plate and the bottom plate 723 , thereby forming an installation cavity 721 .
  • the bottom plate 723 and the top plate are rectangular, the number of circumferential side plates 724 is four, and the four circumferential side plates 724 are respectively connected to the corresponding side edges of the bottom plate 723 and the top plate, and further connected to the bottom plate 723 It is enclosed with the top plate to form a cuboid-shaped electric control box 7 .
  • the size of the long side of the bottom plate 723 is the length of the electric control box 7
  • the size of the short side of the bottom plate 723 is the width of the electric control box 7 .
  • the height of the circumferential side plate 724 perpendicular to the bottom plate 723 is the height of the electric control box 7 . As shown in FIG.
  • the length of the electric control box 7 in the X direction is the length of the electric control box 7
  • the length of the electric control box 7 in the Y direction is the height of the electric control box 7
  • the electric control box 7 in the Z direction is the height of the electric control box 7 .
  • the length in the direction is the width of the electric control box 7 .
  • the shapes of the bottom plate 723 and the top plate of the box body 72 can also be circular, trapezoidal, triangular, etc.
  • the circumferential side plates 724 are also arranged around the outer circumference of the bottom plate 723 to form other shapes of electric control
  • the shape of the box 7 and the electric control box 7 can be specifically set as required, which is not specifically limited in the embodiment of the present application.
  • the main body of heat exchange is L-shaped and U-shaped
  • the heat exchange body 61 is arranged in a straight shape, as shown in FIG. 10 , the heat exchange body 61 has an overall length, an overall width and an overall height.
  • the overall length is the length of the heat exchange main body 61 along the extending direction thereof, that is, the length of the heat exchange main body 61 along the X direction shown in FIG. 10 .
  • the overall width is the length of the heat exchange body 61 in the direction perpendicular to the extending direction of the heat exchange body 61 and perpendicular to the plane where the heat exchange body 61 is located, that is, the length of the heat exchange body 61 along the Y direction shown in FIG. 10 .
  • the overall height is the length of the heat exchange body 61 in the Z direction shown in FIG. 10 .
  • the plane where the heat exchange body 61 is located refers to the plane where the header assembly 62 is located, that is, the XOZ plane shown in FIG. 10 .
  • the extension length of the heat exchange main body 61 needs to be increased to increase the heat exchange area under the condition that the cross-sectional dimension of the radiator 6 remains unchanged, thereby improving the heat exchange effect. If a straight heat exchange main body 61 is used, the overall length of the heat exchange main body 61 will be long, and the volume of the electric control box 7 matched with the radiator 6 will be larger, which is not conducive to the miniaturized design of the electric control box 7 .
  • the heat exchange body 61 in order to reduce the overall length of the heat exchange body 61, can be divided into a first extension part 617 and a second extension part 618, and the second extension part 618 is connected to the first extension part 618.
  • the end of the portion 617 is bent toward one side of the first extension portion 617 .
  • the overall length of the heat exchange body 61 can be reduced on the condition that the heat exchange body 61 has a sufficiently long extension length , so that the length of the electric control box 7 matched with the heat sink 6 along the X direction can be reduced, so as to reduce the volume of the electric control box 7 .
  • the heat exchange main body 61 can be arranged on the bottom plate 723 of the electric control box 7 .
  • the first extension portion 617 can be arranged parallel to the bottom plate 723 to make full use of the lengthwise dimension of the bottom plate 723 to set the heat exchange main body 61 as long as possible to improve the heat exchange effect.
  • the second extension 618 may be arranged parallel to the circumferential side plate 724 to reduce the space occupied by the second extension 618 in the X direction.
  • first extension portion 617 may abut against the bottom plate 723 or be spaced from the bottom plate 723
  • second extension portion 618 may abut against the circumferential side plate 724 or be spaced from the circumferential side plate 724 .
  • the embodiment is not specifically limited.
  • the heat exchange main body 61 may be disposed on the circumferential side plate 724 of the electric control box 7 .
  • the first extension portion 617 can be arranged to be parallel to one of the circumferential side plates 724
  • the second extension portion 618 can be arranged to be parallel to the circumferential side plate 724 adjacent to the circumferential side plate 724 to dissipate heat.
  • the device 6 is arranged on one side of the installation cavity 721 .
  • the heat exchange main body 61 may also be fixed at other positions of the electric control box 7 according to the arrangement positions of the electronic components 71 and the like, which are not specifically limited in the embodiment of the present application.
  • the number of the second extension parts 618 may be one, and one second extension part 618 is connected to one end of the first extension part 617 , so that the heat exchange main body 61 is L-shaped.
  • the number of the second extension parts 618 may be two, and the two second extension parts 618 are respectively connected to opposite ends of the first extension part 617 and are respectively bent to the same side of the first extension part 617 . fold.
  • the two second extending portions 618 may be disposed at opposite ends of the first extending portion 617 in parallel and spaced apart, so as to further reduce the overall length of the heat exchanging main body 61 while ensuring the heat exchange effect of the heat exchanging main body 61 , reducing the volume of the radiator 6 .
  • the two second extending portions 618 are bent and arranged on the same side of the first extending portion 617, and are located on opposite sides of the first extending portion 617 relative to the two second extending portions 618, which can also facilitate shortening the heat sink. 6 overall width.
  • the two second extension parts 618 may be perpendicular to the first extension part 617 to form a U-shaped heat exchange body 61 .
  • the two second extension parts 618 may be perpendicular to the first extension part 617 to form a U-shaped heat exchange body 61 .
  • the space occupied by the second extending portion 618 in the X direction can be reduced, avoiding the two second extending portions 618 and the electronic components 71 disposed in the mounting cavity 721 . interfere.
  • the two second extension parts 618 may also be inclined relative to the first extension part 617 , and the inclination angles of the two second extension parts 618 relative to the first extension part 617 may be the same or different, so as to shorten the electric control box 7 the overall width.
  • the extension length of the first extension part 617 is set to be greater than the extension length of the second extension part 618 , so that the first extension part 617 is arranged along the length direction of the electric control box 7 , and the second extension part 618 is arranged along the length direction of the electric control box 7 . 7 for width or height direction settings.
  • the number of radiators 6 disposed in the installation cavity 721 can be one, and one radiator 6 can be extended in the installation cavity 721 along the length direction of the box body 72 .
  • a heat sink 6 may be extended in the installation cavity 721 along the height direction of the box body 72 .
  • the number of the heat sinks 6 provided in the installation cavity 721 may be at least two, for example, the number of the heat sinks 6 may be two, three, four or five, and so on.
  • the number of the heat sinks 6 may be two, three, four or five, and so on.
  • the number of radiators 6 disposed in the installation cavity 721 can be two, and the heat exchange bodies 61 of the two radiators 6 are both L-shaped, and the two radiators 6 are along the length direction of the electric control box 7 .
  • (X direction) spaced apart that is, the first extension parts 617 of the two heat sinks 6 are spaced apart along the length direction (X direction) of the electric control box 7, and the second extension parts 618 of the two heat sinks 6 are located at two One side of the first extending portion 617 away from each other is to avoid interference with the electronic components 71 disposed in the mounting cavity 721 .
  • the two radiators 6 may also be arranged side by side and at intervals along the width direction (Z direction) of the electric control box 7 , that is, the first extending parts 617 of the two radiators 6 are arranged along the length direction (Z direction) of the electric control box 7 .
  • the fixing structure of the economizer is complicated and the installation efficiency is low.
  • the radiator 6 in the embodiment of the present application is arranged in a plate shape, which can facilitate the installation and fixing of the radiator 6, thereby improving the assembly efficiency.
  • the electric control box 7 may include a fixing bracket 73 , and the fixing bracket 73 is connected between the heat exchange main body 61 and the box body 72 to fix the heat exchange main body 61 to the electric control box 7 .
  • the fixing bracket 73 is connected between the heat exchange main body 61 and the box body 72 to fix the heat exchange main body 61 to the electric control box 7 .
  • the fixing bracket 73 may be connected between the first extending portion 617 and the circumferential side plate 724 , and the fixing bracket 73 may also be connected between the second extending portion 618 and the circumferential side plate 724 , the connection structure is generally the same.
  • the following takes the example of the connection between the first extension portion 617 and the circumferential side plate 724 of the fixing bracket 73 to describe the connection structure of the heat exchange main body 61 and the box body 72 .
  • the fixing bracket 73 may include a first fixing portion 731 and a second fixing portion 732 that are connected by bending, the first fixing portion 731 is welded to the first extending portion 617 , and the second fixing portion 732 is connected to the circumferential side. Plate 724 is fastened.
  • the first fixing portion 731 is welded on one of the main surfaces of the heat exchange body 61 to increase the welding area between the fixing bracket 73 and the heat exchange body 61 and improve the welding strength.
  • the second fixing portion 732 may be connected to the circumferential side plate 724 by means of screw connection, snap connection, or adhesion, so as to facilitate maintenance or replacement of the radiator 6 .
  • the main surface of the heat exchange body 61 refers to the surface with a larger surface area of the heat exchange body 61.
  • the main surface of the heat exchange body 61 refers to the surface parallel to the XOZ plane. .
  • the second fixing portion 732 is vertically connected with the first fixing portion 731 to form an L-shaped fixing bracket 73 .
  • the force of the fixing bracket 73 can be made more uniform.
  • the fixing bracket 73 may include a first fixing part 731 , a second fixing part 732 and a third fixing part 733 which are connected by bending, and the first fixing part 731 and the third fixing part 733 are relatively spaced apart and connected to each other.
  • the second fixing portion 732 and the bottom plate 723 are spaced apart to form a clamping groove 734.
  • the first extension portion 617 can be welded to the side of the second fixing portion 732 away from the clamping groove 734.
  • the heat exchange main body 61 and the bottom plate 723 can be spaced apart to disconnect the heat exchange main body 61 and the electric control box 7 to avoid heat exchange between the heat exchange main body 61 and the electric control box 7 and reduce the heat dissipation efficiency of the radiator 6 .
  • first fixing portion 731 and the third fixing portion 733 are connected to opposite ends of the second fixing portion 732 by bending, and are located on the same side of the second fixing portion 732 to enclose a grooved clamping groove. 734.
  • the ends of the first fixing portion 731 and the third fixing portion 733 away from the second fixing portion 732 are connected to the bottom plate 723 .
  • the connection method between the second fixing portion 732 and the heat exchange main body 61 can be the same as that in the above-mentioned embodiment, and the connection method between the first fixing portion 731 and the third fixing portion 733 and the bottom plate 723 can be the same as that in the above-mentioned embodiment. Please refer to the descriptions in the above embodiments, which are not repeated here.
  • the first extension portion 617 may be disposed in the clamping groove 734, and the first extension portion 617 abuts against the bottom plate 723 and the second fixing portion 732 on opposite sides along the entire width direction of the heat exchange body 61, respectively.
  • the extending portion 617 abuts against the first fixing portion 731 and the third fixing portion 733 on opposite sides along the overall height direction of the heat exchange body 61 , so as to keep the first extending portion 617 fixed.
  • fixing brackets can be used to fix various forms of heat sinks disclosed in the present application, and the fixing positions thereof are not limited to the specific positions described above.
  • the radiator is set in the electric control box
  • the radiator 6 is arranged in the installation cavity 721 of the electric control box 7 .
  • the heat sink 6 can be thermally connected to the electronic components 71 provided in the mounting cavity 721, so as to dissipate heat for the electronic components 71.
  • the electronic component 71 can be thermally connected to the first extension portion 617 and/or the second extension portion 618 .
  • the various forms of heat sinks 6 disclosed in this application can also be arranged in the installation cavity 721 of the electrical control box 7 or applied to the heat dissipation of the electrical control box 7, and can be directly or It is thermally connected to the electronic component 71 in an indirect manner.
  • the electronic element 71 can be thermally connected to the first extension portion 617 , and the electronic element 71 can be arranged with the second extension portion 618 On the same side of the first extension portion 617 , the height of the electric control box 7 is shortened, that is, the dimension along the Y direction.
  • the electronic element 71 can be thermally connected to the second extension portion 618, and specifically, the electronic element 71 can be disposed on the side of the second extension portion 618 facing the first extension portion 617, so as to shorten the length of the electric control box 7, that is, Dimensions along the X direction.
  • the electronic components 71 may also be partially disposed on the first extending portion 617 and partially disposed on the second extending portion 618 , so that the electronic components 71 are evenly distributed.
  • a heat dissipation fixing plate 74 can also be arranged in the electric control box 7 , the electronic components 71 can be arranged on the heat dissipation fixing plate 74 , and then the heat dissipation fixing plate 74 can be arranged on the heat exchange main body 61 . , so that the electronic components 71 and the heat exchange main body 61 are thermally connected through the heat dissipation fixing plate 74 , so that the installation efficiency of the electronic components 71 can be greatly improved.
  • the heat dissipation fixing plate 74 may be disposed on the first extension portion 617 and/or the second extension portion 618, and the electronic components 71 may be disposed on the heat dissipation fixing plate 74 away from the first extension portion 617 and/or the second extension part 618 on one side.
  • the heat dissipation fixing plate 74 can be disposed on the main surface of the heat exchange body 61 to increase the contact area between the heat dissipation fixing plate 74 and the heat exchange body 61 , thereby improving the heat conduction efficiency.
  • the main surface of the heat exchange body 61 has a larger support surface for the heat dissipation fixing plate 74 , which can improve the installation stability of the electronic components 71 .
  • the heat dissipation fixing plate 74 can be made of a metal plate or an alloy plate with good thermal conductivity.
  • the heat dissipation fixing plate 74 can be made of an aluminum plate, a copper plate, an aluminum alloy plate, etc. to improve the heat conduction efficiency.
  • a heat pipe 741 can also be embedded in the heat dissipation fixing plate 74.
  • the heat pipe 741 is used to rapidly conduct heat from a relatively concentrated high-density heat source and then spread it to the entire surface of the heat dissipation fixing plate 74, so that the heat dissipation fixing plate
  • the heat distribution on the 74 is uniform, and the heat exchange effect between the heat dissipation fixing plate 74 and the heat exchange main body 61 is enhanced.
  • the heat pipes 741 may be arranged in a strip shape, the number of the heat pipes 741 may include multiple, and the multiple heat pipes 741 may be arranged in parallel and spaced apart.
  • the plurality of heat pipes 741 may also be connected in sequence in a ring shape or a frame shape, which is not specifically limited in the embodiment of the present application.
  • the radiator is set outside the electric control box
  • the radiator 6 is disposed outside the electric control box 7 , an assembly port 726 can be opened on the box body 72 of the electric control box 7 , and the electronic components 71 are thermally connected to the heat sink 6 through the assembly port 726 .
  • the heat dissipation fixing plate 74 can be connected to the heat sink 6 and the mounting opening 726 can be blocked, and the electronic components 71 can be arranged on the surface of the heat dissipation fixing plate 74 away from the heat sink 6 .
  • a heat pipe 741 may be provided to thermally connect the electronic component 71 and the heat sink 6 .
  • the heat pipe 741 may include a heat absorption end 741a and a heat release end 741b, and the heat absorption end 741a of the heat pipe 741 may be inserted into the interior of the mounting cavity 721 and thermally connected with the electronic component 71 for absorbing the heat of the electronic component 71.
  • the radiating end 741b of the heat pipe 741 is disposed outside the electric control box 7 and is thermally connected to the radiator 6 to dissipate heat from the radiating end 741b of the heat pipe 741 by the radiator 6 .
  • the heat generated by the electronic components 71 is relatively large, and the electric control box 7 is usually a relatively closed environment, if the heat in the electric control box 7 cannot be discharged in time, the temperature in the installation cavity 721 of the electric control box 7 will be caused. higher, as such, the electronic components 71 may be damaged. Although the refrigerant flowing in the radiator 6 disposed in the installation cavity 721 will take away part of the heat, the heat dissipation performance of the electronic control box 7 is still poor.
  • heat dissipation fins 75 can be provided in the electric control box 7 , and the heat dissipation fins 75 can be thermally connected to the heat exchange body 61 , so as to use the heat dissipation fins 75 to enlarge the heat exchange body 61 .
  • the contact area with the air in the electric control box 7 facilitates heat exchange with the air, reduces the temperature in the installation cavity 721 , and protects the electronic components 71 .
  • one of the electronic components 71 and the heat dissipation fins 75 may be disposed on the first extending portion 617, and the other of the electronic components 71 and the heat dissipation fins 75 may be disposed on the second extending portion 618, so that the The electronic components 71 and the heat dissipation fins 75 are staggered to avoid interference between the electronic components 71 and the heat dissipation fins 75, and the distance between the electronic components 71 and the heat dissipation fins 75 is set to be larger, so as to make the distance between the electronic components 71 and the heat dissipation fins 75 larger.
  • the temperature of the refrigerant in contact with the electronic components 71 is lower, so as to improve the heat dissipation effect of the heat exchange body 61 .
  • the number of the heat dissipation fins 75 may be one, and the size of the heat dissipation fins 75 along the overall height direction of the heat exchange body 61 is greater than the overall height of the heat exchange body 61 .
  • the heat dissipation fins 75 may be connected to the surface of the heat exchange body 61 by welding, bonding or fastening.
  • the connection between the heat dissipation fins 75 and the heat exchange main body 61 can be facilitated, and the installation efficiency of the heat dissipation fins 75 and the heat exchange main body 61 can be improved;
  • the contact area between the heat dissipation fins 75 and the air can be increased to enhance the heat exchange effect.
  • the number of heat dissipation fins 75 can be multiple, and the size of each heat dissipation fin 75 along the overall height direction of the heat exchange body 61 is equal to the size of each plate body along the overall height direction of the heat exchange body 61 .
  • Each heat dissipation fin 75 is attached to a plate body, and a plurality of heat dissipation fins 75 can be arranged at intervals along the overall height direction of the heat exchange body 61 to increase the contact area between the heat dissipation fins 75 and the air.
  • the heat dissipation fins 75 can also extend to the outside of the electric control box, for example, an assembly opening is provided on the box body 72, the heat exchange body 61 is arranged in the box body 72, and is thermally connected with the electronic components 71, while One side of the heat dissipation fins 75 is thermally connected to the heat exchange main body 61 and extends to the outside of the box body 72 through the assembly port, and can further improve the heat dissipation capability of the heat exchange main body 61 through the assistance of air cooling.
  • heat dissipation fin structure is applicable to various forms of heat exchangers described in this application, and should not be limited to a specific embodiment.
  • the structure of the heat sink 6 in this embodiment is substantially the same as the structure of the heat sink 6 in the above-mentioned embodiment, the difference is that in this embodiment, the heat sink 6 further includes a third extension portion 619 .
  • the first extension portion 617 and the third extension portion 619 are arranged side by side and spaced apart, and the second extension portion 618 is connected between adjacent ends of the first extension portion 617 and the third extension portion 619 .
  • the third extension portion 619 is connected to the end of the second extension portion 618 away from the first extension portion 617 , and is bent toward the side of the second extension portion 618 toward the first extension portion 617 so as to be connected with the first extension portion 617 . 617 interval settings. In this way, the overall length and width of the heat exchange body 61 can be reduced while the extension length of the heat exchange body 61 is kept unchanged, so as to further reduce the volume of the electric control box 7 matched with the radiator 6 .
  • the number of the second extension parts 618 is two, and the two second extension parts 618 are respectively bent and connected to opposite ends of the first extension part 617 , and the number of the third extension parts 619 is For one, a third extension 619 is provided at the end of one of the second extensions 618 away from the first extension 617, and is bent toward the direction of the other second extension 618 to form a G-shaped heat exchange main body 61.
  • the number of the second extension parts 618 can also be set to one, one second extension part 618 is bent and connected to one end of the first extension part 617 , the number of the third extension parts 619 is one, and one third extension part 619 It is provided at the end of the second extension portion 618 away from the first extension portion 617 , and is bent toward the direction of the first extension portion 617 .
  • the number of the second extension parts 618 can be set to two, the two second extension parts 618 are respectively connected to opposite ends of the first extension part 617 by bending, and the number of the third extension parts 619 is two, two The third extension parts 619 are respectively connected to the ends of the two second extension parts 618 away from the first extension part 617 , and extend toward each other to further reduce the overall length of the heat exchange body 61 .
  • the third extension part 619 can be arranged in parallel with the first extension part 617 and spaced apart to prevent the third extension part 619 from increasing the overall width of the heat exchange body 61 , and can also facilitate the extension between the first extension part 617 and the third extension part 619 .
  • the electronic components 71 and the like are arranged in the interval of the part 619 to make full use of the internal space of the electric control box 7 .
  • the electronic element 71 may be disposed on the first extension portion 617 and thermally connected to the first extension portion 617 , and the electronic element 71 is located in the interval between the first extension portion 617 and the third extension portion 619 .
  • the electronic element 71 can also be disposed on the third extension part 619 and thermally connected with the third extension part 619 , and the electronic element 71 is located in the interval between the first extension part 617 and the third extension part 619 .
  • the electronic element 71 can also be disposed on the first extension part 617 and the third extension part 619 at the same time, and the electronic element 71 can be thermally connected to the first extension part 617 and the third extension part 619 at the same time, so as to further improve the heat sink
  • the heat exchange between 6 and the electronic components 71 improves the heat dissipation efficiency of the electronic components 71 .
  • the electronic components 71 can be divided into those that are prone to failure and those that are not prone to failure according to the frequency of failure of the electronic components 71 during use. Since the space between the first extension part 617 and the third extension part 619 is small, it is inconvenient to disassemble and assemble the electronic component 71. Therefore, in this embodiment, the electronic component 71 that is not prone to failure can be further arranged in the between the first extension part 617 and the third extension part 619 to reduce the maintenance probability of the electronic component 71 .
  • heat dissipation fixing plate 74 can be fixed on the third extending portion 619 in addition to the manner in the above-mentioned embodiment.
  • the heat dissipation fixing plate 74 can be disposed on the side of the third extending portion 619 facing the first extending portion 617, and the electronic components 71 can be disposed on the side of the heat dissipation fixing plate 74 facing the first extending portion 617, so that the The structures of the electronic components 71 and the heat exchange main body 61 are more compact, so as to avoid excessive occupation of the internal space of the electric control box 7 .
  • the heat dissipation fins 75 can be fixed on the first extension part 617 and/or the second extension part 618 in the manner in the above-mentioned embodiment, and can also be fixed on the third extension part 619 .
  • one of the heat dissipation fins 75 and the electronic element 71 can be disposed on the first extension portion 617 , and the other of the heat dissipation fin 75 and the electronic element 71 can be disposed on the second extension portion 618 and/or the third extension portion 619, so as to stagger the heat dissipation fins 75 and the electronic components 71 from each other.
  • the number of heat dissipation fins 75 may be one, and one heat dissipation fin 75 is disposed on the second extension portion 618 or the third extension portion 619 .
  • the number of the heat dissipation fins 75 may also be two, and the two heat dissipation fins 75 are respectively disposed on the second extension portion 618 and the third extension portion 619 to increase the contact area between the heat dissipation fins 75 and the air, and improve the The heat dissipation effect of the radiator 6.
  • the heat dissipation plate is set in a position where the temperature of the radiator is higher
  • the electrical control box 7 in this embodiment includes a box body 72 , a heat sink 6 and electronic components 71 .
  • the box body 72 is provided with a mounting cavity 721 , and the heat sink 6 is at least partially arranged in the mounting cavity 721 , and the electronic components 71 is arranged in the installation cavity 721 .
  • the structures of the box body 72 and the radiator 6 are substantially the same as those in the above embodiments, please refer to the descriptions in the above embodiments.
  • the heat exchange main body 61 may be entirely disposed in the installation cavity 721 of the electric control box 7 , and the heat exchange main body 61 may also be partially disposed in the installation cavity 721 of the electric control box 7 and partially protrude out of the electric control box 7 . , for connection with the header assembly 62 and external piping.
  • the flow of the refrigerant flow makes the temperature of the radiator 6 lower, and the temperature in the installation cavity 721 of the electric control box 7 is higher due to the heat generated by the electronic components 71 in the electric control box 7.
  • the air with a higher temperature in the electric control box 7 contacts When it reaches the radiator 6 , it is easy to condense, and condensed water is formed on the surface of the radiator 6 . If the generated condensed water flows to the position of the electronic components 71 , the electronic components 71 may be easily short-circuited or damaged, and a fire hazard may be more serious.
  • the heat exchange body 61 can be divided into a first end 61a and a second end 61b along the flow direction of the refrigerant flow, and the temperature of the heat exchange body 61 is in the direction from the first end 61a to the second end 61b.
  • the temperature of the first end 61a is gradually decreased, that is, the temperature of the first end 61a is higher than that of the second end 61b.
  • the electronic component 71 is disposed at a position close to the first end 61 a and thermally connects the electronic component 71 with the heat exchange body 61 .
  • the temperature of the heat exchange body 61 described above and below refers to the surface temperature of the heat exchange body 61 .
  • the surface temperature change of the heat exchange body 61 is determined by the heat exchange channels adjacent to the surface.
  • the surface temperature of the heat exchange main body 61 is The refrigerant flow direction along the main road channel gradually decreases, and at this time, the first end 61a is located upstream of the second end 61b along the refrigerant flow direction of the main road channel.
  • the heat exchange channel adjacent to the surface of the heat exchange main body 61 is an auxiliary road channel
  • the surface temperature of the heat exchange main body 61 gradually decreases and increases along the refrigerant flow direction of the auxiliary road channel.
  • the first end 61a is located along the refrigerant flow direction of the auxiliary road channel. Downstream of the second end 61b.
  • the heat exchange body 61 by dividing the heat exchange body 61 into a first end 61a with a higher temperature and a second end 61b with a lower temperature according to the temperature change on the heat exchange body 61, because the first end 61a with a higher temperature and the hot air The temperature difference between them is small, and no condensed water is generated or the amount of condensed water produced is small.
  • the electronic component 71 By arranging the electronic component 71 at a position close to the first end 61a, the probability that the electronic component 71 is in contact with the condensed water can be reduced, Further, the electronic components 71 are protected.
  • the temperature of the heat exchange body 61 has an opposite trend of change from the first end 61a to the second end 61b, that is, in one mode, the temperature of the heat exchange body 61 gradually decreases from the first end 61a to the second end 61b , and in another mode, the temperature of the heat exchange body 61 gradually increases from the first end 61a to the second end 61b.
  • the ambient temperature is low, for example, when the air conditioner works for heating in winter, the temperature of the air in the electrical control box 7 is low, and at this time, the temperature difference between the air in the electrical control box 7 and the radiator 6 Smaller, the air does not easily condense to form condensed water.
  • the ambient temperature is high, for example, when the air conditioner works for cooling in summer, the temperature of the air in the electric control box 7 is relatively high, the temperature difference between the air in the electric control box 7 and the radiator 6 is relatively large, and the air Easily condensed to form condensed water.
  • the temperature of the heat exchange main body 61 may be gradually decreased in the direction from the first end 61a to the second end 61b, so as to prevent the radiator 6 from being in the cooling mode. Condensed water is produced.
  • arranging the electronic component 71 at a position close to the first end 61a means that the electronic component 71 has a first distance between the thermally conductive connection position of the electronic component 71 on the heat exchange body 61 and the first end 61a, and is a distance from the second end 61a. There is a second distance between 61b, and the first distance is smaller than the second distance.
  • the temperature of the heat exchange body 61 gradually decreases in the direction from the first end 61a to the second end 61b, the temperature of the first end 61a is the highest, the temperature of the second end 61b is the lowest, and the heat exchange body 61
  • the lower the temperature of the heat exchange main body 61 the greater the temperature difference with the hot air, and the easier it is for the condensed water to condense. That is, in the direction from the first end 61 a to the second end 61 b of the heat exchange body 61 , the probability of generating condensed water gradually increases.
  • the electronic component 71 by arranging the electronic component 71 near the higher temperature end of the heat exchange body 61 , that is, at a position where condensed water is not easy to accumulate, the risk of contacting the electronic component 71 with the condensed water can be reduced, thereby protecting the electronic component 71 .
  • the extending direction of the heat exchange body 61 can be set along the vertical direction, and the first end 61a can be set on the upper part of the second end 61b. In this way, when the heat exchange body 61 is close to the second end 61b When condensed water is generated at the position of , the condensed water will flow down in the vertical direction, that is, the condensed water will flow in a direction away from the electronic component 71 to prevent the electronic component 71 from contacting the condensed water.
  • the extension direction of the heat exchange main body 61 can also be set in the horizontal direction as required, so that the condensed water generated near the second end 61b can be quickly separated from the heat exchange main body 61 under the action of gravity, so as to avoid contact with the electronic components 71 touch.
  • the extending direction of the heat exchange main body 61 may also be inclined relative to the horizontal direction, which is not specifically limited in the embodiment of the present application.
  • the structure of the heat sink 6 in this embodiment can be set to be the same as that in the above-mentioned embodiment, that is, a bent heat exchange body 61 is used.
  • the structure of the heat sink 6 in this embodiment may also adopt a straight heat exchange body 61 .
  • other types of heat sinks may also be used, and the specific structure of the heat sink 6 is not limited in the embodiment of the present application.
  • various heat sinks disclosed in the present application or other heat sinks known in the art may be used.
  • the flow directions of the refrigerants used for heating or cooling are opposite, so that the temperature of the heat exchange body 61 along its extending direction changes with the working state of the air conditioner.
  • the temperature of the first end 61a is always higher than the temperature of the second end 61b.
  • the refrigerant in the first heat exchange channel 610 main circuit may flow in opposite directions in the cooling and heating modes.
  • the electrical control box further includes a first one-way conduction device 701 , a second one-way conduction device 702 , a third one-way conduction device 703 and a fourth one-way conduction device 704 .
  • the inlet of the first one-way conduction device 701 is connected to one end of the indoor unit (for example, the indoor heat exchanger 5 in FIG.
  • the outlet of the first one-way conduction device 701 is connected to the header assembly 62 near the first end 61a
  • the inlet of the second one-way conduction device 702 is connected to the header assembly 62 close to the second end 61b, and the outlet of the second one-way conduction device 702 is connected to one end of the indoor unit; the inlet of the third one-way conduction device 703 is connected to the throttle At one end of the valve (such as the expansion valve 13 in FIG.
  • the outlet of the third one-way conducting device 703 is connected to the header assembly 62 near the first end 61a; the inlet of the fourth one-way conducting device 704 is connected to the second end In the header assembly 62 of 61b, the outlet of the fourth guiding and conducting device is connected to one end of the throttle valve.
  • the air-conditioning system 1 is in the cooling mode, the refrigerant flow output by the compressor 2 flows to the outdoor heat exchanger 4 for heat exchange, the refrigerant flow continues to flow to the throttle valve (expansion valve 13), and then passes through the third one-way guide device 703.
  • the header assembly 62 at the first end 61a flows through the heat exchange main body 61 to the second end 61b, whereby the refrigerant flow in the direction from the first end 61a to the second end 61b exchanges heat with the auxiliary circuit ( That is, supercooling), so that the temperature of the heat exchange body 61 continuously decreases in the direction from the first end 61a to the second end 61b.
  • the refrigerant flowing out from the second end 61b flows through the second one-way conduction device 702 and then is discharged to the indoor heat exchanger 5 for heat exchange.
  • the air-conditioning system 1 is in the heating mode, the refrigerant flow output by the compressor 2 flows to the indoor heat exchanger 5 for heat exchange, the refrigerant flow continues to flow to the electronic control box 7, and enters through the first one-way conduction device 701 near the first end. 61a of the header assembly 62, and flows to the second end 61b through the heat exchange main body 61, whereby the refrigerant flow in the direction from the first end 61a to the second end 61b exchanges heat with the auxiliary circuit (ie, passes through cold), so that the temperature of the heat exchange body 61 decreases continuously in the direction from the first end 61a to the second end 61b.
  • the refrigerant flowing out from the second end 61b flows through the fourth one-way valve 704 and then is discharged to the throttle valve, and enters the outdoor heat exchanger 4 for heat exchange.
  • the flow direction of the refrigerant flow in the heat exchange body 61 can be fixed, thereby ensuring that the electronic components 71 are always located in the heat exchange body 61 The side with the higher temperature, avoid contact with the condensed water produced.
  • the first one-way conduction device 701, the second one-way conduction device 702, the third one-way conduction device 703 and the fourth one-way conduction device 704 can all be set as one-way valves.
  • the first one-way conduction device 701, the second one-way conduction device 702, the third one-way conduction device 703 and the fourth one-way conduction device 704 can also be configured as solenoid valves, and the type of the one-way conduction device is not specified in this embodiment of the present application. Specific restrictions.
  • the electric control box 7 in this embodiment includes a box body 72 , a mounting plate 76 , an electronic component 71 and a heat sink 6 .
  • the box body 72 is provided with an installation cavity 721, and the installation plate 76 is disposed in the installation cavity 721, so that the installation cavity 721 forms a first cavity 7212 and a second cavity 7214 on both sides of the installation board 76, and the electronic components 71 are provided with In the second chamber 7214, at least part of the heat exchange body 61 is disposed in the first chamber 7212, and is thermally connected with the electronic components 71.
  • the mounting plate 76 is used to block the condensed water on the radiator 6 from flowing into the second chamber. Room 7214.
  • the mounting plate 76 By disposing the mounting plate 76 in the electrical control box 7 to separate the mounting cavity 721, and disposing the heat exchange main body 61 and the electronic component 71 in the independent first cavity 7212 and the second cavity 7214, respectively, it is possible to The electronic components 71 are completely isolated from the condensed water, so as to prevent the electronic components 71 from being short-circuited or damaged by contacting the condensed water.
  • the heat dissipation fixing plate 74 may be used to indirectly connect the electronic components 71 and the heat exchange main body 61 .
  • avoidance holes 762 may be provided at positions corresponding to the mounting plate 76 and the heat dissipation fixing plate 74 , the heat dissipation fixing plate 74 is connected to the heat exchange main body 61 and blocks the escape holes 762 , and the electronic components 71 are provided on the heat dissipation fixing plate 74 away from One side of the heat exchange body 61 .
  • the electronic component 71 and the heat exchange main body 61 can be thermally connected by the heat dissipation fixing plate 74 , and the first chamber 7212 and the second chamber 7214 can be separated by the heat dissipation fixing plate 74 to prevent condensed water from passing through the avoidance hole 762 It flows into the second chamber 7214 provided with the electronic components 71 , thereby preventing the condensed water from contacting the electronic components 71 .
  • the condensed water will fall under the action of gravity after accumulating, and the dripping condensed water is not only prone to generate larger noise, but also the more dispersed condensed water is not Facilitate the discharge of the electric control box 7 .
  • a baffle plate 77 may be provided in the electric control box 7 , and the baffle plate 77 is arranged on the lower side of the radiator 6 for collecting the condensed water dripping from the radiator 6 .
  • the arrangement of the deflector plate 77 can not only reduce the drop height of the condensed water, thereby reducing noise, and the deflector plate 77 also has a certain accumulation effect on the condensed water, which is convenient for the condensed water to be collected and discharged from the electric control box 7 together.
  • the radiator 6 is fixed on the bottom plate 723 of the electric control box 7, one end of the deflector 77 is connected to the bottom plate 723, the other end of the deflector 77 extends into the first chamber 7212, and the radiator The projection of 6 in the vertical direction falls on the inside of the deflector 77 . In this way, it can be ensured that the condensed water dripping from the radiator 6 is all located on the deflector 77 to prevent the condensed water from dripping to other positions of the electric control box 7 .
  • the radiator 6 can also be arranged on the mounting plate 76. At this time, one end of the deflector 77 is connected to the mounting plate 76, and the other end of the deflector 77 extends toward the inside of the first chamber 7212, and the radiator The projection of 6 in the vertical direction falls on the inside of the deflector 77 .
  • a drainage port 725 can also be opened on the bottom wall of the box body 72, and the deflector 77 is opposite to the box body.
  • the bottom wall of 72 is inclined, and the condensed water is guided by the deflector plate 77 and then discharged from the box body 72 through the drain port 725 .
  • a drain port 725 can be provided on the circumferential side plate 724 of the electric control box 7, and the deflector plate 77 is connected to the mounting plate 76 or the bottom plate 723 of the box body 72, and is inclined to the direction of the drain port 725 to prevent condensation. After the water droplets land on the deflector 77 , they will converge along the inclined deflector 77 to the position of the drain port 725 , and then discharge the electric control box 7 from the drain port 725 .
  • the number and size of the drain ports 725 can be flexibly set according to the amount of condensed water, which is not specifically limited in the embodiment of the present application.
  • the flow direction of the refrigerant flow in the heat exchange main body 61 can be arranged in the horizontal direction, that is, the extension direction of the heat exchange main body 61 can be arranged in the horizontal direction, on the one hand, the flow of the condensed water on the heat exchange main body 61 can be shortened.
  • the heat dissipation plate is set at a position where the temperature of the radiator is higher, and uses the condensed water to evaporate and absorb heat
  • the electric control box 7 in this embodiment includes a box body 72 , a mounting plate 76 and a heat sink 6 .
  • the box body 72 is provided with an installation cavity 721 , and the installation plate 76 is arranged in the installation cavity 721 , so that the installation cavity 721 forms a first cavity 7212 and a second cavity 7214 on both sides of the installation plate 76 .
  • a first ventilation port 764 and a second ventilation port 766 are spaced apart, so that the gas in the first chamber 7212 flows into the second chamber 7214 through the first ventilation port 764, and the gas in the second chamber 7214 passes through the second ventilation Port 766 flows into first chamber 7212.
  • At least part of the heat exchange main body 61 is disposed in the first chamber 7212 , and the flow direction of the refrigerant flow in the heat exchange main body 61 is disposed along the spaced direction between the first ventilation opening 764 and the second ventilation opening 766 , and the temperature of the heat exchange main body 61 is Gradually increase in the direction from the second vent 766 to the first vent 764 , that is, the temperature of the heat exchange body 61 at a position close to the first vent 764 is higher than that at a position close to the second vent 766 .
  • the refrigerant flow mentioned here can be the main refrigerant flow in the air conditioning system shown in FIG. 1 , or the auxiliary refrigerant flow.
  • the heat exchange main body 61 may be arranged in a horizontal direction, a vertical direction or other directions, which are not limited herein. Meanwhile, the number, position and extension direction of the first ventilation openings 764 and the second ventilation openings 766 are also not limited.
  • the amount of condensed water generated near the second vent 766 is relatively large.
  • plate 76, and a first vent 764 and a second vent 766 are spaced along the flow direction of the refrigerant flow on the mounting plate 76.
  • the flow direction of the refrigerant flow in the heat exchange main body 61 is set along the interval direction of the first ventilation port 764 and the second ventilation port 766, including the flow direction of the refrigerant flow being parallel to the interval direction, and may include the flow direction of the refrigerant flow. There is a certain inclination angle with the spacing direction.
  • an air conditioner generally has a cooling mode and a heating mode, there may be situations in which the refrigerant flows in opposite directions in these two modes. Therefore, it is prioritized to ensure that in the cooling mode, the temperature of the heat exchange body 61 gradually increases in the direction from the second vent 766 to the first vent 764 for the following reasons:
  • the temperature of the heat exchange main body 61 may be gradually increased in the direction from the second vent 766 to the first vent 764 to avoid the radiator 6 Condensate water is produced in cooling mode.
  • the electrical control box 7 may further include electronic components 71 , and the electronic components 71 are thermally connected to the radiator 6 , so that the electronic components 71 are dissipated by the radiator 6 .
  • the electronic components 71 may be disposed in the first chamber 7212 .
  • the electronic component 71 may be disposed at a position of the heat exchange main body 61 close to the first vent 764 and thermally connected with the heat exchange main body 61 .
  • the airflow continuously exchanges heat with the radiator 6, so that the temperature of the airflow gradually decreases, and due to the location close to the first vent 764
  • the temperature of the heat exchange main body 61 is relatively high, so the temperature difference between the air flow and the radiator 6 can be reduced, and the probability of the air flow condensing at the position of the heat exchange main body 61 close to the first ventilation port 764 can be reduced.
  • the electronic components 71 can be prevented from contacting with condensed water, thereby protecting the electronic components 71 provided on the heat exchange body 61 .
  • the first ventilation openings 764 and the second ventilation openings 766 may be arranged at intervals along the horizontal direction, and at this time, the extending direction of the heat exchange body 61 is also arranged along the horizontal direction.
  • the condensed water will flow down in the vertical direction. Since the length of the heat exchange body 61 in the vertical direction is small, the condensed water flows for a certain distance. After that, it will be separated from the heat exchange main body 61, resulting in droplets of condensed water.
  • the first vent 764 and the second vent 766 can be spaced apart in the vertical direction, and the first vent 764 is located on the upper part of the second vent 766, and the heat exchange body 61
  • the extension direction of is also set along the vertical direction. At this time, when the amount of condensed water generated near the second vent 766 is too large to evaporate, the condensed water will flow down in the vertical direction. Since the length of the heat exchange body 61 in the vertical direction is long, the condensation will be prolonged.
  • the flow path of the water increases the contact area between the hot air and the condensed water, thereby increasing the evaporation of the condensed water and preventing the condensed water from dripping.
  • the condensed water can flow in the direction away from the electronic component 71 to avoid the electronic component. 71 is in contact with condensed water.
  • the electronic components 71 may also be disposed in the second chamber 7214 and thermally connected to the heat sink 6 by using the heat dissipation fixing plate 74 .
  • the connection manner of the electronic component 71 and the heat dissipation fixing plate 74 may be the same as that in the above-mentioned embodiment, please refer to the description in the above-mentioned embodiment.
  • a cooling fan 78 can be provided in the electric control box 7, so as to use the cooling fan 78 to strengthen the first chamber 7212 and the second chamber Convective effects of chamber 7214.
  • a cooling fan 78 may be provided in the second chamber 7214 , and the cooling fan 78 provides forced convection in the second chamber 7214 from the second vent 766 to the first chamber 7212 .
  • a cooling fan 78 is arranged in the chamber 7214, which can accelerate the flow of high-temperature air from the second vent 766 to the first chamber 7212, so as to increase the evaporation speed of the condensed water.
  • the cooling fan 78 can be arranged at a position close to the first vent 764 to increase the distance between the cooling fan 78 and the second vent 766 and increase the radiation range of the cooling fan 78, so that the cooling fan 78 More air can be blown into the second vent 766 .
  • a temperature sensor (not shown in the figure) can also be provided in the electric control box 7, and the temperature sensor is used to detect the temperature in the second chamber 7214, so that the temperature sensor detects the temperature in the second chamber 7214
  • the cooling fan 78 is controlled to start working or increase the rotational speed.
  • a temperature sensor may be provided in the second chamber 7214 of the electric control box 7 for detecting the temperature in the second chamber 7214 .
  • the temperature sensor When the heat generated by the operation of the electronic components 71 is large and the temperature in the second chamber 7214 rises to exceed the temperature threshold, the temperature sensor is triggered, the temperature sensor transmits the high temperature trigger signal to the motherboard, and the motherboard turns on the cooling fan 78 to utilize heat dissipation
  • the fan 78 accelerates the flow of the air in the second chamber 7214, accelerates the circulation speed of the air between the first chamber 7212 and the second chamber 7214, and accelerates the evaporation speed of the condensed water.
  • the temperature in the second chamber 7214 decreases and is lower than the temperature threshold, the temperature sensor is triggered, and the temperature sensor transmits a low temperature trigger signal to the motherboard, and the motherboard further turns off the cooling fan 78 to save energy.
  • the size of the temperature threshold may be set as required, which is not specifically limited in this embodiment of the present application.
  • a heat dissipation plate is set upstream of the radiator, and a heat dissipation fin is set downstream
  • the electric control box 7 includes a box body 72 , a heat sink 6 , an electronic component 71 and a heat dissipation fin 75 .
  • the box body 72 is provided with an installation cavity 721, and at least part of the heat exchange main body 61 is disposed in the installation cavity 721; the electronic components 71 are thermally connected to the heat exchange main body 61 at the first position, and the heat dissipation fins 75 are at the second position. It is thermally connected to the heat exchange body 61 , wherein the first position and the second position are spaced apart from each other along the flow direction of the refrigerant flow of the heat exchange body 61 .
  • the refrigerant flow mentioned here may be the main refrigerant flow in the air conditioning system shown in FIG. 1 , or the auxiliary refrigerant flow.
  • the space on the heat exchange body 61 can be fully utilized, and not only the heat exchange body 61 can be used for the electronic components 71 .
  • the heat dissipation fins 75 can also be used to reduce the temperature in the installation cavity 721 of the electric control box 7 , thereby protecting the electronic components 71 disposed in the installation cavity 721 .
  • the heat exchange body 61 includes a first end 61a and a second end 61b spaced apart from each other along the flow direction of the refrigerant flow, wherein the temperature of the heat exchange body 61 gradually decreases in the direction from the first end 61a to the second end 61b , that is, the temperature of the first end 61a is greater than the temperature of the second end 61b.
  • the first position is disposed closer to the first end 61a than the second position.
  • the surface temperature of the heat exchange body 61 will change with the flow direction of the refrigerant flow, thereby forming a first end 61a with a higher temperature and a second end with a lower temperature 61b, since the temperature difference between the higher temperature first end 61a and the hot air in the installation cavity 721 is small, it is not easy to generate condensed water, so the electronic component 71 can be arranged close to the first end 61a, that is, the first A position is provided near the first end 61a. Since the temperature difference between the lower temperature second end 61b and the hot air in the installation cavity 721 is relatively large, condensed water is likely to be generated.
  • the heat dissipation fins 75 can be arranged close to the second end 61b.
  • the lower temperature The heat dissipation fins 75 can ensure that the heat dissipation fins 75 and the hot air have a sufficiently large temperature difference to facilitate the heat dissipation of the electric control box 7.
  • the condensed water formed by condensation on the heat dissipation fins 75 will also evaporate under the action of the hot air. , the condensed water evaporates and absorbs heat, so as to further reduce the temperature of the refrigerant flow and improve the heat exchange effect of the radiator 6 .
  • a cooling fan 78 can also be provided in the electrical control box 7, and the cooling fan 78 is used to form a cooling airflow acting on the cooling fins 75 in the electrical control box 7, so that the flow speed of the cooling airflow can be accelerated, and then Improve heat transfer effect.
  • the cooling fan 78 may be disposed close to the cooling fins 75 to directly act on the cooling fins 75 .
  • a mounting plate 76 can also be provided in the electrical control box 7 , and the mounting plate 76 is provided in the mounting cavity 721 , so that the mounting cavity 721 forms the first cavity 7212 and In the second chamber 7214, a first vent 764 and a second vent 766 are spaced apart on the mounting plate 76, so that the gas in the first chamber 7212 flows into the second chamber 7214 through the first vent 764, and the second The gas in the chamber 7214 flows into the first chamber 7212 through the second vent 766 , at least part of the heat exchange body 61 is located in the first chamber 7212 , and the electronic components 71 and the cooling fan 78 are arranged in the second chamber 7214 .
  • a circulating airflow can be formed in the first chamber 7212 and the second chamber 7214 to increase the The air volume in contact with the heat dissipation fins 75 disposed in the first chamber 7212 is large, and the air flow after cooling can facilitate the heat dissipation of the electronic components 71 disposed in the second chamber 7214, so as to avoid gas mixing, so as to improve the heat dissipation fins 75 cooling efficiency.
  • the cooling fan 78 disposed in the second chamber 7214 is used to accelerate the flow speed of the air in the second chamber 7214, thereby accelerating the circulation speed of the air between the first chamber 7212 and the second chamber 7214, The heat dissipation efficiency of the electric control box 7 is improved.
  • the flow direction of the heat dissipation air flowing through the heat dissipation fins 75 can be set to be perpendicular to the flow direction of the refrigerant flow.
  • the cooling airflow can be set to flow in a vertical direction to prevent the cooling airflow from flowing to the position of the electronic components 71 .
  • first ventilation openings 764 and the second ventilation openings 766 may be disposed on opposite sides of the heat dissipation fins 75 at intervals along the vertical direction.
  • the number and arrangement density of the first ventilation openings 764 and the second ventilation openings 766 can be set as required.
  • the cooling airflow may be arranged to flow in a horizontal direction to prevent the cooling airflow from flowing to the position of the electronic components 71 .
  • the flow direction of the cooling air flow and the flow direction of the refrigerant flow may also be set to be along other two mutually perpendicular directions, which are not specifically limited in the embodiment of the present application.
  • the first ventilation port 764 and the second ventilation port 766 arranged in the vertical direction are adopted, the first ventilation port 764 can be arranged on the upper part of the second ventilation port 766, so that the first ventilation port 764 can enter the first ventilation port 766 through the second ventilation port 766.
  • the hot air in a chamber 7212 automatically rises to the position of the heat exchange body 61 and exchanges heat with the heat exchange body 61 .
  • the cooling fan 78 can be positioned close to the first vent 764 so that the cool air at the top of the first chamber 7212 can enter the second chamber 7214 in time, and the cooling fan 78 can accelerate the cooling air , so as to improve the heat dissipation efficiency of the electronic components 71 .
  • a heat dissipation hole that communicates with the installation cavity 721 is usually opened on the box body 72 of the electric control box 7, so as to exchange heat with the natural convection of the outside air through the heat dissipation hole, and then to the electric control box 7.
  • the control box 7 is cooled down.
  • the method of opening heat dissipation holes on the box body 72 will reduce the sealing performance of the electric control box 7, and impurities such as moisture and dust from the outside will enter the installation cavity 721 through the heat dissipation holes, thereby damaging the components disposed in the installation cavity 721.
  • Electronic component
  • the box body 72 of the electric control box 7 can be set to be a sealed structure.
  • the electric control box 7 includes a box body 72 , a mounting plate 76 , a heat sink 6 , an electronic component 71 and a cooling fan 78 .
  • the box body 72 is provided with an installation cavity 721 , and the installation plate 76 is disposed in the installation cavity 721 , so that the installation cavity 721 forms a first cavity 7212 and a second cavity 7214 on both sides of the installation plate 76 .
  • a spaced first vent 764 and a second vent 766 are provided, and the first vent 764 and the second vent 766 communicate with the first chamber 7212 and the second chamber 7214; the radiator 6 is at least partially provided in the first chamber
  • the electronic component 71 is arranged in the second chamber 7214 and is thermally connected to the radiator 6; the cooling fan 78 is used for air supply, so that the gas in the first chamber 7212 flows into the first chamber 7212 through the first vent 764.
  • Two chambers 7214 Two chambers 7214.
  • the heat sink 6 is arranged in the first cavity 7212
  • the electronic components 71 and the cooling fan 78 are arranged in the second cavity 7214
  • the first cavity is connected to the mounting plate 76 at intervals.
  • the first vent 764 and the second vent 766 of the chamber 7212 and the second chamber 7214 in this way, the electronic components 71 generate heat, so that the temperature of the air in the second chamber 7214 is higher, and the heat dissipation fan 78 sends the hot air into the second chamber 7214.
  • the second ventilation port 766 due to the low density of the hot air, the hot air naturally rises to contact the radiator 6 provided in the first chamber 7212, the radiator 6 is used for cooling the hot air to form cold air, and the cold air is
  • the first ventilation port 764 flows into the second chamber 7214 , and the cooling fan 78 is used to accelerate the cold air, so as to use the cold air to cool down the electronic components 71 disposed in the second chamber 7214 , after heat exchange with the electronic components 71 .
  • the temperature of the cold air rises, and the cold air after the temperature rise continues to enter the second vent 766 under the action of the cooling fan 78, and circulates through this, and then through the internal circulation method for the electric control box 7.
  • the electronic components 71 are cooled, compared with the method of opening heat dissipation holes on the electric control box 7 for cooling, the electric control box 7 in the present application is a fully enclosed electric control box 7, which can effectively solve the problems of waterproof, insect-proof, dust-proof, Moisture-proof and other problems, thereby improving the electrical control reliability of the electrical control box 7 .
  • the cooling fan 78 is installed in the first vent 764 , and the plane where the cooling fan 78 is located is coplanar with the plane where the mounting plate 76 is located.
  • the cooling fan 78 can be fixed in the first vent 764 through a fan bracket (not shown in the figure), and the plane where the cooling fan 78 is located specifically refers to a plane perpendicular to the direction of the rotation axis of the cooling fan 78 .
  • the cooling fan 78 By arranging the cooling fan 78 in the first vent 764, the distance between the cooling fan 78 and the first chamber 7212 can be shortened, the cooling air can be easily discharged from the first chamber 7212, and the second chamber can be prevented from being occupied by the cooling fan 78.
  • the space in the chamber 7214 can be used to make the arrangement of the components in the electric control box 7 more compact, thereby reducing the volume of the electric control box 7 .
  • the airflow direction of the cooling fan 78 is usually perpendicular to the plane where the mounting plate 76 is located, so that , the flow direction of the airflow of the cooling fan 78 cannot directly act on the electronic components 71 , and the flow path of the airflow in the second chamber 7214 is prolonged.
  • an air guide cover 79 can also be provided in the electric control box 7, and the air guide cover 79 is covered on the periphery of the cooling fan 78 to guide the air blown by the cooling fan 78, so that the The air outlet direction of the cooling fan 78 faces the electronic components 71 .
  • the air guide cover 79 is connected to the mounting plate 76 , and the air outlet of the air guide cover 79 faces the position where the electronic components 71 are located, so that the air flow of the cooling fan 78 flows to the place where the air guide cover 79 is guided.
  • the cold air can directly act on the electronic components 71 to improve the heat dissipation efficiency of the electronic components 71; speed to further improve the heat dissipation efficiency of the electronic components 71 .
  • the plane where the cooling fan 78 is located is perpendicular to the plane where the mounting plate 76 is located, and the leeward side of the cooling fan 78 is disposed toward the first vent 764 .
  • the cooling fan 78 can be disposed on the side of the mounting plate 76 facing the second chamber 7214 , the direction of the rotation axis of the cooling fan 78 is parallel to the plane where the mounting plate 76 is located, and the leeward side of the cooling fan 78 refers to the cooling fan 78 the air inlet side.
  • the cooling fan 78 can be arranged between the first vent 764 and the electronic component 71 , and the cool air entering the second chamber 7214 through the first vent 764 is accelerated by the cooling fan 78 and then flows out to prevent The flow speed of the cold air is increased, and the heat dissipation efficiency of the electric control box 7 is improved.
  • a return air duct 791 can also be provided in the electric control box 7, and the return air duct 791 is connected to Between the first vent 764 and the cooling fan 78 , the air in the first chamber 7212 is transported to the cooling fan 78 . In this way, all the cold air entering through the first vent 764 is sent to the cooling fan 78 through the return air duct 791 and accelerated by the cooling fan 78 to increase the flow speed of the cold air and improve the heat dissipation efficiency of the electronic control box 7 .
  • an air supply air duct 792 can also be provided in the electric control box 7, and the air supply air duct 792 is connected to the side of the cooling fan 78 away from the return air duct 791, and is used for the cooling fan 78. The blown air is directed so that the airflow directed through the air supply air duct 792 flows toward the electronic component 71 .
  • the air supply duct 792 can be used to guide the air blown by the cooling fan 78, so that the air outlet direction of the cooling fan 78 is directed toward the electronic component 71, so as to increase the proportion of cold air flowing to the position of the electronic component 71, Thus, the heat dissipation efficiency of the electronic component 71 is improved.
  • the cooling fan 78 can also be configured as a centrifugal fan.
  • the centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas.
  • the working principle of a centrifugal fan is to use a high-speed rotating impeller to accelerate the gas. Therefore, in this embodiment, by setting the cooling fan 78 as a centrifugal fan, on the one hand, high-speed cold air can be obtained to improve the heat dissipation efficiency of the electronic components 71,
  • the cooling fan 78 of the air duct 792 and the centrifugal fan can also simplify the structure of the cooling fan 78 and improve the installation efficiency.
  • the addition of the air guide cover 79 and the air supply air duct 792 will make the air flow direction after the guide relatively fixed, although the heat dissipation efficiency of some electronic components 71 in the air flow direction can be improved. , but the heat dissipation effect of the electronic component 71 at a position that deviates from the direction of the airflow is relatively poor.
  • air guide plates (not shown in the figure) can also be arranged on the mounting plate 76 at intervals, and air guide channels are formed between the air guide plates to guide the air blown out by the cooling fan 78 .
  • two parallel and spaced air guide plates can be arranged between the electronic components 71 that are dispersedly arranged, and the extension direction of the air guide plates is along the spacing direction of the electronic components 71, so as to define a space along the electronic components between the two air guide plates.
  • 71 The air guide runners in the spacing direction.
  • the cold air blown by the cooling fan 78 first flows to the position of some electronic components 71 to dissipate heat from the electronic components 71 , and the air after passing through some electronic components 71 further flows to the position of another part of the electronic components 71 through the air guide channel, It is used to dissipate heat to another part of the electronic components 71 .
  • the heat dissipation of the electronic components 71 can be more evenly dissipated, and the temperature of the local electronic components 71 can be prevented from being too high and damaged.
  • the radiator 6 can be arranged inside the electric control box 7 , that is, the heat exchange main body 61 can be arranged in the first chamber 7212 for cooling the air in the first chamber 7212 .
  • the radiator 6 can also be disposed outside the electric control box 7 , and at least a part of the radiator 6 can be extended in the first chamber 7212 .
  • the radiator 6 includes the heat exchange main body 61 , the integrated pipeline assembly 62 and the heat dissipation fins 75
  • an assembly port (not shown) that communicates with the first chamber 7212 may be opened on the box body 72 .
  • the heat exchange body 61 is connected to the outer side wall of the box body 72
  • the heat dissipation fins 75 are connected to the heat exchange body 61 and inserted into the first chamber 7212 through the assembly port.
  • the matching manner of the radiator 6 and the electric control box 7 in this embodiment is the same as that in the above-mentioned embodiment, please refer to the description in the above-mentioned embodiment, which will not be repeated here.
  • the electronic components 71 can be arranged within the air supply range of the cooling fan 78 , so that the cooling fan 78 can directly act on the electronic components 71 to cool down.
  • the electronic element 71 may include, for example, a common mode inductor 711 , a reactance 712 , a capacitor 713 , and other primary heating elements that generate relatively large amounts of heat, and a secondary heating element such as the fan module 714 that generates relatively small amounts of heat.
  • the distance between the main heating element and the first ventilation port 764 can be set to be smaller than the distance between the secondary heating element and the first ventilation port 764, that is, the main heating element with larger calorific value can be Set at a position close to the first ventilation port 764, and set the secondary heating element with a smaller calorific value at a position away from the first ventilation port 764, so that the air with a lower temperature entering through the first ventilation port 764 acts first It is used for the main heating element with a large amount of heat, so as to improve the heat dissipation efficiency of the main heating element with a large amount of heat.
  • the second vent 766 can be opened at the end of the cooling fan 78 for air supply, and is opened at a position close to the electronic component 71 that generates a larger amount of heat, on the one hand, the radiation range of the cooling fan 78 can be expanded, and the first The circulation efficiency of the air in the second chamber 7214 can also make the hot air after heat exchange with the electronic component 71 with a large calorific value to be discharged out of the second chamber 7214 in time to avoid raising the temperature of the entire second chamber 7214 .
  • the second ventilation port 766 can be arranged at a position close to the first ventilation port 764, so as to shorten the circulation path of the air in the second chamber 7214, reduce the air flow resistance, improve the circulation efficiency of the air, and further improve the electric power.
  • the sizes of the first vent 764 and the second vent 766 may also be set according to the arrangement of the electronic components 71 .
  • the number of the second ventilation openings 766 may be multiple, and the multiple second ventilation openings 766 are respectively provided at different positions of the mounting plate 76 .
  • the size of the second vent 766 located at the position of the electronic component 71 with a large heat generation can be set relatively large, the number of the second vent 766 can also be set relatively large, and a plurality of the second vent 766
  • the distribution density of can be set relatively large.
  • the size of the second vent 766 located at the position of the electronic component 71 with less heat generation can be set relatively small, the number of the second vent 766 can also be set relatively small, and a plurality of the second vent 766 The distribution density of can be set relatively small.
  • the size of the first vent 764 may be set larger than the size of the second vent 766 to increase the return air volume and improve the efficiency of the cooling fan 78 .
  • the electric control box 7 includes a box body 72 , a mounting plate 76 , a heat sink 6 and a main heating element 715 .
  • the box body 72 is provided with an installation cavity 721 , and the installation plate 76 is disposed in the installation cavity 721 , so that the installation cavity 721 forms a first cavity 7212 and a second cavity 7214 on both sides of the installation plate 76 .
  • a first ventilation port 764 and a second ventilation port 766 spaced in the vertical direction are provided; the radiator 6 is at least partially provided in the first chamber 7212; the main heating element 715 is provided in the second chamber 7214; the first ventilation The port 764 and the second ventilation port 766 communicate with the first chamber 7212 and the second chamber 7214 to form a circulating flow between the first chamber 7212 and the second chamber 7214 by utilizing the temperature difference between the main heating element 715 and the radiator 6 cooling airflow.
  • the main heating element 715 is arranged in the second chamber 7214, and the heat generated by the operation of the main heating element 715 causes the temperature in the second chamber 7214 to rise. Due to the low density of the hot air, the hot air naturally rises and increases. After entering the first chamber 7212 through the first vent 764 at the top of the second chamber 7214, the hot air contacts the radiator 6 and exchanges heat with the radiator 6, the temperature of the hot air decreases, and the density increases.
  • a first vent 764 and a second vent 766 are formed on the mounting plate 76 to communicate with the first chamber 7212 and the second chamber 7214, and the first vent 764 and the second vent 766 are vertically arranged.
  • the air can circulate between the first chamber 7212 and the second chamber 7214 by its own gravity, so as to cool down the electronic components 71 arranged in the second chamber 7214, and can reduce the electrical control
  • the overall temperature of the box 7, compared with the solution of using the cooling fan 78 for air supply, the structure of the electric control box 7 in this embodiment is more concise, which can improve the assembly efficiency of the electric control box 7 and reduce the temperature of the electric control box 7. Cost of production.
  • the radiator 6 can be arranged on the upper side of the main heating element 715 in the direction of gravity, that is, the radiator 6 can be arranged at a position close to the top of the first chamber 7212, and the main heating element 715 can be arranged close to the second chamber. 7214 at the bottom of the location.
  • the distance between the radiator 6 and the first vent 764 can be reduced, so that the hot air entering the first chamber 7212 through the first vent 764 quickly contacts the radiator 6 to cool down, and is cooled by gravity. Under the action of natural sinking.
  • the hot air entering the second chamber 7214 through the second vent 766 quickly contacts the main heating element 715 to heat up, and naturally under the action of buoyancy In this way, the circulation speed of the air flow in the electric control box 7 can be increased, and the heat dissipation efficiency can be improved.
  • a secondary heating element 716 can also be provided in the electric control box 7 , and the secondary heating element 716 is arranged in the second chamber 7214 and is thermally connected to the heat exchange main body 61 , wherein the secondary heating element 716
  • the calorific value of 716 is smaller than the calorific value of the main heating element 715 .
  • the main heating element 715 with a larger calorific value can be arranged at a position close to the second vent 766, on the one hand, the cold air entering through the first chamber 7212 can be first mixed with the generator. Contacting the electronic components 71 with a large amount of heat can improve the heat dissipation efficiency of the electronic components 71. On the other hand, a large temperature difference can be created between the cold air and the electronic components 71 with a relatively large amount of heat, so that the cold air can be heated up quickly, and then It rises rapidly under the action of buoyancy.
  • the secondary heating element 716 with smaller calorific value is disposed on the heat exchange main body 61 and in contact with the heat exchange main body 61 , and the heat exchange main body 61 can be used to directly cool down the electronic element 71 with smaller calorific value.
  • the main heating element 715 with a larger calorific value and the secondary heating element 716 with a smaller calorific value in different regions, the distribution of the electronic elements 71 can be made reasonable, and the internal space of the electric control box 7 can be fully utilized.
  • the secondary heating element 716 is connected to the heat exchange main body 61 through the heat dissipation fixing plate 74 to improve the assembly efficiency of the secondary heating element 716 .
  • connection manner between the secondary heating element 716 and the heat exchange main body 61 may be the same as that in the above-mentioned embodiment, and the specific reference is made to the description in the above-mentioned embodiment, which will not be repeated here.
  • the radiator 6 can also be disposed outside the electric control box 7 , and at least a part of the radiator 6 can be extended in the first chamber 7212 .
  • the matching manner of the radiator 6 and the electric control box 7 is the same as that in the above-mentioned embodiment, please refer to the description in the above-mentioned embodiment.

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Abstract

本申请公开了一种换热器、电控盒以及空调系统，换热器包括：换热主体，包括彼此嵌套的第一管体和第二管体，第一管体内设置有多个第一微通道，第二管体内设置有多个第二微通道；集流管组件包括第一集流管和第二集流管，第一集流管设置有第一集流通道，第一集流通道用于向多个第一微通道提供第一冷媒流和/或收集流经多个第一微通道的第一冷媒流，第二集流管设置有第二集流通道，第二集流通道用于向多个第二微通道提供第二冷媒流和/或收集流经多个第二微通道的第二冷媒流。上述方案，缩小换热器的体积，能够提高第一管体和第二管体之间的换热面积，提高换热器的换热效率。

Description

换热器、电控盒以及空调系统
本申请要求于2020年08月26日提交的申请号为202021821340.8，发明名称为“换热器、电控盒以及空调系统”的中国专利申请的优先权，要求于2021年02月08日提交的申请号202120351578.7，发明名称为“换热器、电控盒以及空调系统”的中国专利申请的优先权，其通过引用方式全部并入本申请。
【技术领域】
本申请涉及空调技术领域，特别是涉及一种换热器、电控盒以及空调系统。
【背景技术】
空调装置设置有经济器，经济器通过制冷剂自身节流蒸发吸收热量从而使另一部分制冷剂得到过冷。目前常用于的经济器为板式换热器，板式换热器是用薄金属板压制成具有一定波纹形状的换热板片，然后叠装，用夹板、螺栓紧固而成的一种换热器。换热板片之间形成通道，制冷剂在通道中流过，实现通过换热板片进行热量交换。由于体积的限制使得换热板片的数量，如此，严重的影响了板式换热器的换热效率。
【申请内容】
本申请至少提供一种换热器、电控盒以及空调系统。
本申请第一方面提供了一种换热器，包括：
换热主体，包括彼此嵌套的第一管体和第二管体，所述第一管体内设置有多个第一微通道，所述第二管体内设置有多个第二微通道；
集流管组件，包括第一集流管和第二集流管，所述第一集流管设置有第一集流通道，所述第一集流通道用于向所述多个第一微通道提供第一冷媒流和/或收集流经所述多个第一微通道的第一冷媒流，所述第二集流管设置有第二集流通道，所述第二集流通道用于向所述多个第二微通道提供第二冷媒流和/或收集流经所述多个第二微通道的第二冷媒流，以使得流经所述多个第一微通道的第一冷媒流与流经所述多个第二微通道的第二冷媒流之间进行热交换。
本申请第二方面提供了一种电控盒，包括盒体和上述的换热器，所述换热器设置在所述盒体上。
本申请第三方面提供了一种空调系统，包括压缩机、四通阀、室外换热器、室内换热器和上述的换热器，所述换热器设置在所述室外换热器和所述室内换热器之间，所述压缩机通过所述四通阀在所述室外换热器和所述室内换热器之间提供循环流动的冷媒流。
本申请的有益效果是：本申请的换热器包括换热主体和集流管组件，换热主体，包括彼此嵌套的第一管体和第二管体，所述第一管体内设置有多个第一微通道，所述第二管体内设置有多个第二微通道；由于微通道的特征长度变小，在与经济器的换热量相等的情况下，换热主板的长度缩短，进而缩小换热器的体积；且第一管体套设在第二管体的外侧，能够提高第一管体和第二管体之间的换热面积，提高换热器的换热效率。另外，流经多个第一微通道的第一冷媒流与流经多个第二微通道的第二冷媒流之间进行热交换，实现第二冷媒流从第一冷媒流吸热，进而第二冷媒流实现气化，以使第一冷媒流实现进一步过冷。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，而非限制本申请。
【附图说明】
此处的附图被并入说明书中并构成本说明书的一部分，这些附图示出了符合本申请的实施例，并与说明书一起用于说明本申请的技术方案。
图1是本申请一实施例中的空调系统的结构示意图；
图2是图1中换热器的换热主体的结构示意图；
图3是图2中单层微通道和多层微通道的结构示意图；
图4是图1中换热器的集流管组件一实施例的结构示意图；
图5是图1中换热器的集流管组件另一实施例的结构示意图；
图6是图1中换热器的集流管组件又一实施例的结构示意图；
图7是本申请另一实施例换热器的换热主体的结构示意图；
图8是图7中第一管体设置平面的立体结构示意图；
图9是本申请又一实施例换热器的换热主体的结构示意图；
图10是图9中的换热器的结构示意图；
图11是本申请一实施例中的电控盒隐去部分元件后的立体结构示意图；
图12是图11中的散热器的立体结构示意图；
图13是本申请另一实施例中的散热器的立体结构示意图；
图14是本申请一实施例中的固定支架与散热器配合的立体结构示意图；
图15是本申请另一实施例中的固定支架与散热器配合的立体结构示意图；
图16是本申请一实施例中的散热固定板与散热器配合的立体结构示意图；
图17是本申请一实施例中的散热固定板的平面结构示意图；
图18是本申请另一实施例中的散热器与电控盒配合的剖视结构示意图；
图19是本申请另一实施例中的散热器与电控盒配合的剖视结构示意图；
图20是本申请一实施例中的散热翅片与散热器配合的立体结构示意图；
图21是本申请又一实施例中的散热翅片与散热器配合的立体结构示意图；
图22是本申请又一实施例中的散热器的立体结构示意图；
图23是本申请另一实施例中的散热器与电控盒配合的平面结构示意图；
图24是本申请又一实施例中的散热器与电控盒配合的剖视结构示意图；
图25是本申请又一实施例中的散热器与电控盒配合的平面结构示意图；
图26是本申请又一实施例中的散热器与电控盒配合的剖视结构示意图；
图27是本申请又一实施例中的散热器与电控盒配合的平面结构示意图；
图28是图27中的散热器与电控盒配合的剖视结构示意图；
图29是本申请又一实施例中的散热器与电控盒配合的剖视结构示意图；
图30是本申请又一实施例中的电控盒隐去部分元件后的立体结构示意图；
图31是本申请又一实施例中的电控盒隐去部分元件后的立体结构示意图；
图32是本申请又一实施例中的电控盒隐去部分元件后的平面结构示意图；
图33是图32中的电控盒的剖视结构示意图。
【具体实施方式】
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其他实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其他实施例相结合。
请参阅图1，图1是本申请一实施例中的空调系统的结构示意图。如图1所示，空调系统1主要包括压缩机2、四通阀3、室外换热器4、室内换热器5、换热器6、膨胀阀12以及膨胀阀13。膨胀阀13和换热器6设置在室外换热器4和室内换热器5之间，压缩机2通过四通阀3在室外换热器4和室内换热器5之间提供循环流动的冷媒流。
换热器6包括第一换热通道610和第二换热通道611，第一换热通道610的第一端经膨胀阀13与室外换热器4连接，第一换热通道610的第二端与室内换热器5连接，第二换热通道611的第一端经膨胀阀12与第一换热通道610的第二端连接，第二换热通道611的第二端与压缩机2的吸气口22连接。
当空调系统1处于制冷模式时，冷媒流的路径为：
压缩机2的排气口21-四通阀3的连接口31-四通阀3的连接口32-室外换热器4-换热器6-室内换热器5-四通阀3的连接口33-四通阀3的连接口34-压缩机2的吸气口22。
第一换热通道610的冷媒流的路径(主路)为：第一换热通道610的第一端-第一换热通道610的第二端-室内换热器5。第二换热通道611的冷媒流的路径(辅路)为：第一换热通道610的第二端-膨胀阀12-第二换热通道611的第一端-第二换热通道611的第二端-压缩机2的吸气口22。
例如，此时空调系统1的工作原理为：室外换热器4作为冷凝器，其经膨胀阀13输出中压中温的冷媒流(温度可以为40°，液相冷媒流)，第一换热通道610的冷媒流为中压中温的冷媒流，膨胀阀12将中压中温的冷媒流转换为低压低温的冷媒流(温度可以为10°，气液两相冷媒流)，第二换热通道611的冷媒流为低压低温的冷媒流。第二换热通道611的低压低温的冷媒流从第一换热通道610的中压中温的冷媒流吸热，进而第二换热通道611的冷媒流实现气化，以使第一换热通道610的冷媒流实现进一步过冷。气化后的第二换热通道611的冷媒流对压缩机2进行喷气增焓，提高空调系统1的制冷能力。
其中，膨胀阀12作为第二换热通道611的节流部件，调节第二换热通道611的冷媒流的流量。第一换热通道610的冷媒流和第二换热通道611的冷媒流进行热交换，以对第一换热通道610的冷媒流实现过冷。因此，换热器6可以作为空调系统1的经济器，提升过冷度，进而提升空调系统1的换热效率。
进一步，如本领域技术人员所理解的，在制热模式下，四通阀3的连接口31与连接口33连接，四通阀3的连接口32与连接口34连接。压缩机2经排气口21输出的冷媒流从室内换热器5流向室外换热器 4，并以室内换热器5作为冷凝器。此时，室内换热器5输出的冷媒流分为两路，一路流入第一换热通道610(主路)，另一路经膨胀阀12流入第二换热通道611(辅路)。第二换热通道611的冷媒流同样也可以对第一换热通道610的冷媒流实现过冷，流经第二换热通道611的冷媒流对压缩机2进行补气增焓，提高空调的制热能力。
本申请进一步在上文描述的空调系统1的整体结构的基础上进行以下几方面的优化：
1、微通道换热器
如图2所示，换热器6包括换热主体61，换热主体61设有多个微通道612，多个微通道612划分成第一微通道和第二微通道，其中第一微通道作为换热器6的第一换热通道610，第二微通道作为换热器6的第二换热通道611。因此，第一微通道610与第一换热通道610使用相同的标号，第二微通道611与第二换热通道611使用相同的标号。
换热主体61可以包括单个板体613，板体613设有多个微通道612，板体613的多个微通道612可以划分成交替设置的第一微通道610和第二微通道611，第一微通道610的延伸方向D1与第二微通道611的延伸方向D2彼此平行，例如第一微通道610的延伸方向D1与第二微通道611的延伸方向D2相同。板体613可以为扁管，以使散热元件或电子元件可以设置在板体613上。在其他实施例中，板体613还可以为其他形状横截面的载体，例如圆柱体、长方体、正方体等。在其他实施例中，如下文所描述的，换热主体61也可以包括彼此层叠设置的至少两个板体或彼此嵌套的两个管体。
每个微通道612垂直于其延伸方向的横截面形状可以为矩形，每个微通道612的边长为0.5mm-3mm。每个微通道612与板体613的表面之间以及微通道612之间的厚度为0.2mm-0.5mm，以使微通道612满足耐压和传热性能的要求。在其他实施例中，微通道612的横截面形状可以为其他形状，例如圆形、三角形、梯形、椭圆形或者不规则的形状。
例如在图1所示的空调系统的制冷模式下，第一冷媒流(即中压中温的冷媒流)流经第一微通道610，第二冷媒流(即低压低温的冷媒流)流经第二微通道611，第一冷媒流可为液相冷媒流，第二冷媒流可为气液两相冷媒流。第二冷媒流在沿第二微通道611的流动过程中从第一微通道610的第一冷媒流吸热，并进一步气化，以使得第一冷媒流进一步过冷。
值得注意的是，上文和下文描述的基于微通道结构的换热器并不局限于图1所示的应用场景，因此第一微通道610和第二微通道611以及第一冷媒流和第二冷媒流中的“第一”和“第二”仅是用于区分不同的微通道和冷媒流，并不应视为对微通道和冷媒流的具体应用的限定。例如，在其他实施例或工作模式下，可以是流经第一微通道610的第一冷媒流对第二微通道611的第二冷媒流进行吸热，且第一冷媒流和第二冷媒流的状态也不限于上文所限定的液相或气液两相。
如图1所示，第一冷媒流的流动方向A1与第二冷媒流的流动方向A2相反，以使第一冷媒流的温度与第二冷媒流的温度存在较大的温差，提高第一冷媒流和第二冷媒流的换热效率。
可选地，第一冷媒流的流动方向A1可以与第二冷媒流的流动方向A2相同或者相互垂直。
可选地，换热主体61可以包括至少两组第一微通道610和第二微通道611，该至少两组第一微通道610和第二微通道611沿延伸方向D1的垂直方向彼此间隔，如图2所示，该垂直方向为板体613的宽度方向，在其他实施例中，该垂直方向可以是板体613的厚度方向。例如，在多个微通道612中第一预设数量的微通道划分为第一微通道610，在多个微通道612中第二预设数量的微通道划分为第二微通道611，多组第一微通道610和多组第二微通道611依次交替设置，即在两组第一微通道610之间设置有第二微通道611，在两组第二微通道611之间设置有第一微通道610，以实现该至少两组第一微通道610和第二微通道611彼此间隔设置，形成第一微通道610和第二微通道611交替排布的换热器6，如图2所示。第一预设数量和第二预设数量可以相等，例如3；在其他实施例中，第一预设数量和第二预设数量可以不相等，例如第一预设数量为3，第二预设数量为2。
可选地，第一预设数量和第二预设数量均可以为1，在多个微通道612中的一个微通道为第一微通道610，与第一微通道610相邻设置的一个微通道为第二微通道611。
以换热主体61设有10*10个微通道612为例，换热主体61的截面面积与常规通道的截面面积相同，相同质量和流量的冷媒流分别流过10*10个微通道612和常规通道。每个微通道612的特征长度Dh为常规通道的1/10，其中压降与L/(Dh2)成正比，保持相同的压降，则微通道612的长度L为常规通道的长度的1/100。
微通道612的有效热交换面积为常规通道的有效热交换面积的1/10。基于公式：换热系数*特征长度＝常数，可得微通道612的换热系数为常规通道的换热系数的10倍；基于公式：换热量＝换热系数*热交换面积，可得微通道612的换热量与常规通道的换热量相等。因此，10*10个微通道612的长度为常规通道的长度的1/100，即可满足相同的热负荷要求。
通过上述方式，换热主体61设有多个第一微通道610和多个第二微通道611，以使换热主体61的长度缩短，在与经济器的换热量相等的情况下，进而缩小换热器6的体积。
如图3所示，多个微通道612可以设置为单层微通道或者多层微通道。在图3中，多层微通道的横截面积为单层微通道的横截面积的4倍，单层微通道的长度为多层微通道的长度的4倍，相同质量和流量的冷媒流分别流过单层微通道和多层微通道，多层微通道的流速为单层微通道的流速的1/4。
在冷媒流的流态为层流的情况下，多层微通道的压降为单层微通道的压降的1/16，其中换热系数*特征长度＝常数，特征长度不变，换热系数不变，单层微通道的传热面积和多层微通道的传热面积不变，则单层微通道的传热量和多层微通道的传热量相同。因此，在冷媒流的流速较低，且冷媒流的流态为层流的情况下，多个微通道612的截面积越大，多个微通道612的长度越短，能够减小冷媒流的流动阻力损失。
在冷媒流的流态为紊流的情况下，多层微通道的压降为单层微通道的压降的1/48，此时换热系数与冷媒流的流速具有函数关系，冷媒流的流速越大，换热系数越大，因此单层微通道的传热量高于多层微通道的传热量。综上所述，在满足传热量的要求的情况下，多个微通道612的横截面积越大，能够减少冷媒流的压力损失。
1.1集流管组件
如图4所示，换热器6还包括集流管组件62，集流管组件62和换热主体61均水平设置，例如集流管组件62和换热主体61均沿水平面设置。在其他实施例中，集流管组件62垂直设置，即集流管组件62沿垂直于水平面的方向设置(即重力方向)，换热主体61水平设置；或者，集流管组件62垂直设置，换热主体61垂直设置；或者，集流管组件62水平设置，换热主体61垂直设置。
集流管组件62包括第一集流管621和第二集流管622，第一集流管621设置有第一集流通道，第二集流管622设置有第二集流通道。其中，换热器6沿冷媒流(第一冷媒流或第二冷媒流)在换热主体61中的流动方向的横截面形状为I形。在其他实施例中，换热器6沿冷媒流在换热主体61中的流动方向的横截面形状可以为L形、U形、G形或者圆形等。
第一集流通道与第一微通道610连接，以通过第一集流通道向第一微通道610提供第一冷媒流和/或收集流经第一微通道610的第一冷媒流。在本实施例中，第一集流管621的数量为两个，两个第一集流管621分别连接于第一微通道610的两端，以利用两个第一集流管621中的一个向第一微通道610提供第一冷媒流；并利用两个第一集流管621中的另一个收集流经第一微通道610的第一冷媒流。
例如，在图1所示的空调系统中，第一微通道610的第一端通过两个第一集流管621中的一个经膨胀阀13与室外换热器4连接，以在制冷模式下，向第一微通道610提供第一冷媒流；第一微通道610的第二端通过两个第一集流管621中的另一个与室内换热器5连接，以收集流经第一微通道610的第一冷媒流。在制热模式下，由于第一冷媒流在第第一微通道610中的流动方向相反，则两个第一集流管621的功能相较于制冷模式发生互换。
第二集流通道与第二微通道611连接，以通过第二集流通道向第二微通道611提供第二冷媒流和/或收集流经第二微通道611的第二冷媒流。在本实施例中，第二集流管622的数量为两个，两个第二集流管622分别连接于第二微通道611的两端，以利用两个第二集流管622中的一个向第二微通道611提供第二冷媒流；并利用两个第二集流管622中的另一个收集流经第二微通道611的第二冷媒流。
例如，在图1所示的空调系统中，第二微通道611的第一端通过两个第二集流管622中的一个与膨胀阀12连接，以向第二微通道611提供第二冷媒流；第二微通道611的第二端通过两个第二集流管622中的另一个与压缩机2的吸气口22连接，以收集流经第二微通道611的第二冷媒流。
在一实施例中，至少两组第一微通道610和第二微通道611中的第一微通道610的同一端与同一个第一集流管621连接，至少两组第一微通道610和第二微通道611中的第二微通道611的同一端与同一个第二集流管622连接，即换热器6的所有第一微通道610的同一端与同一个第一集流管621连接，换热器6的所有第二微通道611的同一端与同一个第二集流管622连接，避免每个微通道设置对应的集流管，降低成本。
在图4所示的实施例中，由于第一微通道610的延伸方向D1与第二微通道611的延伸方向D2彼此平行，因此第一集流管621和第二集流管622的延伸方向彼此平行。然而，在其他实施例中，第一集流管621和第二集流管622的延伸方向可以根据第一微通道610和第二微通道611的延伸方向进行调整，例如彼此垂直设置。
1.2第一集流管和第二集流管间隔设置
如图4所示，第一集流管621和第二集流管622沿换热主体61的延伸方向间隔设置，换热主体61的延伸方向与第一微通道610的延伸方向D1和第二微通道611的延伸方向D2相同，第二微通道611贯穿第一集流管621，并与第二集流管622连接，其中第一集流管621设置在第二集流管622和换热主体61之间，第二微通道611贯穿第一集流管621插入到第二集流管622中并焊接固定，第一微通道610插入到第一集流管621中并焊接固定。在其他实施例中，可以是第一微通道610贯穿第二集流管622后插入到第一集流管621内。
第一集流管621和第二集流管622之间的距离为R-2R，R为第一集流管621沿第一集流管621和第二集流管622的间隔方向的最大截面尺寸。第一集流管621和第二集流管622的截面形状均可以为圆形，R为第一集流管621的直径或者第二集流管622的直径。在其他实施例中，第一集流管621和第二集流管622的截面形状可以设置为其他形状，例如椭圆形、正方形、长方形或者不规则形状，当第一集流管621和第二集流管622的截面形状为非圆形时，R为第一集流管621或第二集流管622外接圆的直径。
因此，通过将第一集流管621和第二集流管622之间的距离设置的较大，可以使得第一集流管621和第二集流管622与换热主体61之间能够方便焊接。另外，位于第一集流管621和第二集流管622之间的第二微通道611未与第一微通道610进行换热，通过将第一集流管621和第二集流管622之间的距离设置的较小，可以缩小位于第一集流管621和第二集流管622之间的第二微通道611的长度，能够提高第二微通道611的换热面积。
在其他实施例中，第一集流管621和第二集流管622可以焊接在一起，以缩小第一集流管621和第二集流管622之间的距离。
此外，第一微通道610可以绕过第二集流管622后与第一集流管621连接，例如第一微通道610设置在第二集流管622的外侧，以绕过第二集流管622后与第一集流管621连接。或者，第二微通道611可以绕过第一集流管621后与第二集流管622连接。
1.3总集流管划分为两个集流管
如图5所示，集流管组件62包括总集流管623和隔流板624，隔流板624设置在总集流管623内，用于将总集流管623划分为第一集流管621和第二集流管622，即将总集流管623设置成由隔流板624分隔的第一集流管621和第二集流管622。此时，如图5所示，第一微通道610贯穿总集流管623的侧壁并插入到第一集流管621内，而第二微通道611贯穿总集流管623的侧壁和隔流板624并插入到第二集流管622内。在其他实施例中，可以是第二微通道611贯穿总集流管623的侧壁并插入到第二集流管622内，而第一微通道610贯穿总集流管623的侧壁和隔流板624并插入到第一集流管621内。与图4所示的集流管组件62相比较：本实施例通过一条总集流管623同时实现第一集流管621和第二集流管622的功能，能够降低集流管组件62的成本和体积。
在其他实施例中，可以利用隔流板624将总集流管623划分成两个第一集流管621或者两个第二集流管622。此时，第一微通道610的一端贯穿总集流管623的侧壁并插入到其中的一个第一集流管621内，而第一微通道610的另一端贯穿总集流管623的侧壁并插入到其中的另一个第一集流管621内。其中，两个第一集流管621中的一个第一集流管621用于向第一微通道610提供第一冷媒流，两个第一集流管621中的另一个第一集流管621用于收集流经第一微通道610的第一冷媒流，此时第一微通道610为U形流路。
或者，第二微通道611的一端贯穿总集流管623的侧壁并插入到其中的一个第二集流管622内，而第二微通道611的另一端贯穿总集流管623的侧壁和隔流板624并插入到其中的另一个第二集流管622内。其中，两个第二集流管622中的一个第二集流管622用于向第二微通道611提供第二冷媒流，两个第二集流管622中的另一个第二集流管622用于收集流经第二微通道611的第二冷媒流，此时第二微通道611为U形流路。
1.4第一集流管与第二集流管嵌套设置
如图6所示，第二集流管622的直径小于第一集流管621的直径，第一集流管621套设在第二集流管622的外侧，第一微通道610贯穿第一集流管621的侧壁，并插入到第一集流管621内。第二微通道611贯穿第一集流管621和第二集流管622的侧壁，并插入到第二集流管622内。在其他实施例中，可以是第二集流管622套设于第一集流管621的外侧，此时第二微通道611贯穿第二集流管622的侧壁，并插入到第二集流管622内。第一微通道610贯穿第二集流管622和第一集流管621的侧壁，并插入到第一集流管621内。
与图4所示的集流管组件62相比较：通过嵌套设置能够降低集流管组件62的体积。
在其他实施例中，可以是两个第一集流管621彼此嵌套，或者两个第二集流管622彼此嵌套。此时，第一微通道610的一端贯穿外侧的第一集流管621的侧壁，并插入到外侧的第一集流管621内。第一微通道610的另一端贯穿两个第一集流管621内的侧壁，并插入到内侧的第一集流管621内。其中，外侧的第一集流管621用于向第一微通道610提供第一冷媒流，内侧的第一集流管621用于收集流经第一微通道610的第一冷媒流；或者内侧的第一集流管621用于向第一微通道610提供第一冷媒流，外侧的第一集流管621用于收集流经第一微通道610的第一冷媒流；此时第一微通道610为U形流路。
或者，第二微通道611的一端贯穿外侧的第二集流管622的侧壁，并插入到外侧的第二集流管622内。第二微通道611的另一端贯穿两个第二集流管622内的侧壁，并插入到内侧的第二集流管622内。其中，外侧的第二集流管622用于向第二微通道611提供第二冷媒流，内侧的第二集流管622用于收集流经第二微通道611的第二冷媒流；或者，内侧的第二集流管622用于向第二微通道611提供第二冷媒流，外 侧的第二集流管622用于收集流经第二微通道611的第二冷媒流；此时第二微通道611为U形流路。
2.套管式的换热器
如图7所示，换热器6包括换热主体61，换热主体61包括彼此嵌套的第一管体614和第二管体615。第一管体614内设置有多个第一微通道610，第二管体615内设置有多个第二微通道611，多个第一微通道610和多个第二微通道611均与图2所示的微通道612相同，因此换热主体61的长度缩短，进而缩小换热器6的体积。
第一管体614的多个第一微通道610作为换热器6的第一换热通道610，第二管体615的多个第二微通道611作为换热器6的第二换热通道611。其中，第一微通道610的延伸方向与第二微通道611的延伸方向彼此平行，例如第一微通道610的延伸方向与第二微通道611的延伸方向相同。
在本实施例中，第一管体614套设在第二管体615的外侧，第一管体614的外表面设置有至少一个平面616，以形成第一管体614的换热接触面，如图8所示。散热元件或电子元件可以设置在平面616上，便于安装。在其他实施例中，第二管体615可以套设在第一管体614的外侧。
在图1所示的空调系统中，第一冷媒流流经多个第一微通道610，第二冷媒流流经多个第二微通道611，第一冷媒流可为液相冷媒流，第二冷媒流可为气液两相冷媒流。第二冷媒流在沿多个第二微通道611的流动过程中从多个第一微通道610的第一冷媒流吸热，并进一步气化，以使得第一冷媒流进一步过冷。在其他实施例中，第一冷媒流和第二冷媒流可以采用上文描述的其他设置方式。
与图2所示的换热器6进行对比：换热主体61的横截面积变大，能够减少冷媒流的压力损失。此外，第一管体614套设在第二管体615的外侧，能够提高多个第一微通道610与多个第二微通道611的换热面积，提高第一换热通道610和第二换热通道611之间的换热效率。
参照图4所示，换热器6还包括集流管组件62，集流管组件62包括第一集流管621和第二集流管622，第一集流管621设置有第一集流通道，第二集流管622设置有第二集流通道。其中，换热器6的横截面形状为I形，例如换热器6沿冷媒流在换热主体61中的流动方向的横截面形状为I形。在其他实施例中，换热器6沿冷媒流在换热主体61中的流动方向的横截面形状可以为L形、U形、G形或者圆形等。
第一集流通道与第一微通道610连接，以通过第一集流通道向多个第一微通道610提供第一冷媒流和/或收集流经多个第一微通道610的第一冷媒流。第一集流管621的数量为两个，两个第一集流管621分别连接于第一管体614的两端，以利用两个第一集流管621中的一个向多个第一微通道610提供第一冷媒流；并利用两个第一集流管621中的另一个收集流经多个第一微通道610的第一冷媒流。
第二集流通道与第二微通道611连接，以通过第二集流通道向多个第二微通道611提供第二冷媒流和/或收集流经多个第二微通道611的第二冷媒流。第二集流管622的数量为两个，两个第二集流管622分别连接于第二管体615的两端，以利用两个第二集流管622中的一个向多个第二微通道611提供第二冷媒流；并利用两个第二集流管622中的另一个收集流经多个第二微通道611的第二冷媒流。
可选地，换热主体61可以包括至少两组第一管体614和第二管体615，该至少两组第一管体614和第二管体615沿延伸方向的垂直方向彼此间隔。例如，该至少两组第一管体614和第二管体615可以包括第一组彼此嵌套的第一管体614和第二管体615、第二组彼此嵌套的第一管体614和第二管体615，第一组彼此嵌套的第一管体614和第二管体615与第二组彼此嵌套的第一管体614和第二管体615沿延伸方向的垂直方向间隔设置。
该至少两组第一管体614和第二管体615中的第一管体614的同一端与同一个第一集流管621连接，该至少两组第一管体614和第二管体615中的第二管体615的同一端与同一个第二集流管622连接，能够降低成本。
集流管组件62还可以为上文描述的各种集流管设置方式，例如上文描述的第一集流管621和第二集流管622彼此间隔设置方式、总集流管623和隔流板624的设置方式，或者第一集流管621和第二集流管622彼此嵌套的设置方式。此时，第一管体614连同其上的第一微通道610以及第二管体615连同其上的第二微通道611均可以采用上文描述的方式与上述集流管配合，在此不再赘述。
3.换热器具有彼此层叠设置第一板体和第二板体
如图9所示，换热器6包括换热主体61，换热主体61包括第一板体631和第二板体632，第一板体631和第二板体632彼此层叠设置。
第一板体631内设有多个第一微通道610，第二板体632内设有多个第二微通道611，多个第一微通道610和多个第二微通道611均与图2所示的微通道612相同，在此不再赘述。因此换热主体61的长度缩短，进而缩小换热器6的体积。
第一板体631的多个第一微通道610作为换热器6的第一换热通道610，第二板体632的多个第二微通道611作为换热器6的第二换热通道611。其中，第一微通道610的延伸方向与第二微通道611的延伸方向彼此平行，例如第一微通道610的延伸方向与第二微通道611的延伸方向相同。由于第一板体631 和第二板体632彼此层叠设置，提高第一板体631和第二板体632的接触面积，以增大第一换热通道610和第二换热通道611之间的换热面积，提高换热效率。
在图1所示的空调系统中，第一冷媒流流经多个第一微通道610，第二冷媒流流经多个第二微通道611，第一冷媒流可为液相冷媒流，第二冷媒流可为气液两相冷媒流。第二冷媒流在沿多个第二微通道611的流动过程中从多个第一微通道610的第一冷媒流吸热，并进一步气化，以使得第一冷媒流进一步过冷。在其他实施例中，第一冷媒流和第二冷媒流也可以采用上文描述的其他设置方式。
在一实施例中，第一板体631的数量可以为两个，第二板体632夹持设置于两个第一板体631之间，例如第一板体631、第二板体632和第一板体631依次层叠设置。通过第二板体632夹持设置于两个第一板体631之间，以使第二板体632的第二冷媒流同时对两个第一板体631的第一冷媒流进行吸热，实现两个第一板体631的第一冷媒流过冷。此外，散热元件或电子元件可以设置成与第一板体631导热连接，例如散热元件或电子元件可以设置第一板体631远离第二板体632的表面上，便于安装。在一实施例中，两个第一板体631可以是两个相互独立的板体。在其他实施例中，两个第一板体631也可以是呈U形一体连接，此时两个第一板体631内的第一微通道610呈U形连通，进而使得第一微通道610的入口和出口位于换热主体61的同一侧。
在其他实施例中，第二板体632的数量可以为两个，第一板体631夹持设置于两个第二板体632之间。此时，散热元件或电子元件可以设置成与第二板体632导热连接。
如图10所示，换热器6还包括集流管组件62，集流管组件62包括第一集流管621和第二集流管622，第一集流管621设置有第一集流通道，第二集流管622设置有第二集流通道。其中，换热器6沿冷媒流在换热主体61中的流动方向的的横截面形状为I形。在其他实施例中，换热器6沿冷媒流在换热主体61中的流动方向的横截面形状可以为L形、U形、G形或者圆形等。
第一集流通道与第一微通道610连接，以通过第一集流通道向多个第一微通道610提供第一冷媒流和/或收集流经多个第一微通道610的第一冷媒流。第一集流管621的数量为两个，两个第一集流管621分别连接于第一板体631的两端，以利用两个第一集流管621中的一个向多个第一微通道610提供第一冷媒流；并利用两个第一集流管621中的另一个收集流经多个第一微通道610的第一冷媒流。
第二集流通道与第二微通道611连接，以通过第二集流通道向多个第二微通道611提供第二冷媒流和/或收集流经多个第二微通道611的第二冷媒流。第二集流管622的数量为两个，两个第二集流管622分别连接于第二板体632的两端，以利用两个第二集流管622中的一个向多个第二微通道611提供第二冷媒流；并利用两个第二集流管622中的另一个收集流经多个第二微通道611的第二冷媒流。
可选地，换热主体61可以包括至少两组第一板体631和第二板体632，该至少两组第一板体631和第二板体632沿延伸方向的垂直方向彼此间隔。例如，如图10所示，换热主体61包括三组第一板体631和第二板体632，三组第一板体631和第二板体632沿第一微通道610的延伸方向或第二微通道611的延伸方向的垂直方向间隔设置。
该至少两组第一板体631和第二板体632中的第一板体631的同一端与同一个第一集流管621连接，该至少两组第一板体631和第二板体632中的第二板体632的同一端与同一个第二集流管622连接，例如换热主体61的所有第一板体631的同一端与同一个第一集流管621连接，换热主体61的所有第二板体632的同一端与同一个第二集流管622连接，降低成本。
在本实施例中，第一集流管621和第二集流管622沿换热主体61的延伸方向间隔设置。第二板体632贯穿第一集流管621，并插入第二集流管622内，其中第一集流管621设置在第二集流管622和换热主体61之间，第二板体632贯穿第一集流管621，并插入到第二集流管622中并焊接固定，第一板体631插入到第一集流管621中并焊接固定。在其他实施例中，可以是第一板体631贯穿第二集流管622后与第一集流管621连接。
第一集流管621和第二集流管622之间的距离为R-2R，R为第一集流管621沿第一集流管621和第二集流管622的间隔方向的最大截面尺寸。第一集流管621和第二集流管622的截面形状均可以为圆形，R为第一集流管621的直径或者第二集流管622的直径。进一步，如上文描述的，第一集流管621和第二集流管622的截面形状为非圆形时，R为为第一集流管621或第二集流管622外接圆的直径。
集流管组件62还可以为上文描述的各种集流管设置方式，例如上文描述的总集流管623和隔流板624的设置方式，或者第一集流管621和第二集流管622彼此嵌套的设置方式。此时，第一板体631连同其上的第一微通道610以及第二板体633连同其上的第二微通道611均可以采用上文描述的方式与上述集流管配合，在此不再赘述。
4.换热器作为散热器
本申请还可以将上述换热器6用作散热器(以下以散热器6进行描述)，散热器6包括换热主体61和集流管组件62，并将散热器6设置于电控盒7上，以用于为电控盒7及其内部的电子元件71进行散热。值得注意的是，如本领域技术人员所理解的，此处所提及的散热器6应该包括上文描述的各种形式的换 热器，而不应该局限于某一个特定实施例。
如图11所示，电控盒7可包括盒体72和电子元件71，盒体72设有安装腔721，电子元件71设置于安装腔721内。盒体72一般采用钣金件，设于安装腔721内的电子元件71通常可以为压缩机、风机、电容、电控以及共模电感等。
如图11所示，盒体72包括顶板(图中未示出，与底板723相对设置，遮盖安装腔721的开口)、底板723和周向侧板724，顶板和底板723相对间隔设置，周向侧板724连接于顶板和底板723，进而形成安装腔721。
具体来说，在图11中，底板723和顶板呈长方形，周向侧板724的数量为四个，四个周向侧板724分别连接于底板723和顶板的对应侧边，进而与底板723和顶板围合形成长方体状的电控盒7。底板723的长边大小即为电控盒7的长度，底板723的短边大小即为电控盒7的宽度。周向侧板724的垂直于底板723的高度大小即为电控盒7的高度。如图11所示，电控盒7在X方向上的长度即为电控盒7的长度，电控盒7在Y方向上的长度即为电控盒7的高度，电控盒7在Z方向上的长度即为电控盒7的宽度。
在其它一些实施例中，盒体72的底板723和顶板的形状还可以为圆形、梯形、三角形等形状，周向侧板724同样环绕底板723的外周进行设置，以形成其它形状的电控盒7，电控盒7的形状具体可以根据需要进行设置，本申请实施例不做具体限定。
以下几个实施例将对散热器6与电控盒7的具体组合方式进行详细的说明。
5.换热主体呈L型、U型
通常情况下，换热主体61呈直条状设置，如图10所示，换热主体61具有整体长度、整体宽度和整体高度。其中，整体长度即为换热主体61沿其延伸方向上的长度，即换热主体61沿图10中所示的X方向的长度。整体宽度为换热主体61在垂直于换热主体61的延伸方向且垂直于换热主体61所在平面的方向上的长度，即换热主体61沿图10中所示的Y方向的长度。整体高度为换热主体61沿图10中所示的Z方向的长度。
其中，换热主体61所在平面指的是集流管组件62所处的平面，即图10中所示的XOZ平面。
为了保证散热器6的换热效果，在散热器6横截面尺寸不变的情况下，需要增大换热主体61的延伸长度来增大换热面积，进而提升换热效果。如果采用直条状的换热主体61，会导致换热主体61的整体长度较长，使得与散热器6配合的电控盒7的体积较大，不利于电控盒7的小型化设计。
因此，请参阅图11和图12，为了缩小换热主体61的整体长度，可以将换热主体61划分成第一延伸部617和第二延伸部618，第二延伸部618连接于第一延伸部617的端部并向第一延伸部617的一侧弯折。
通过将换热主体61折弯形成弯折连接的第一延伸部617和第二延伸部618，可以在保证换热主体61具有足够长的延伸长度的条件下，缩小换热主体61的整体长度，进而可以缩小与散热器6配合的电控盒7沿X方向的长度，以缩小电控盒7的体积。
在本实施例中，如图11和图12所示，可以将换热主体61设置于电控盒7的底板723上。
具体来说，可以将第一延伸部617设置成与底板723平行，以充分利用底板723的长度方向的尺寸，设置尽可能长的换热主体61，以提升换热效果。可以将第二延伸部618设置成与周向侧板724平行，以降低第二延伸部618在X方向上所占用的空间。
可选地，第一延伸部617可以抵接于底板723，或者与底板723间隔设置，第二延伸部618可以抵接于周向侧板724，或者与周向侧板724间隔设置，本申请实施例不做具体限定。
或者，可以将换热主体61设置于电控盒7的周向侧板724上。具体来说，可以将第一延伸部617设置成与其中一个周向侧板724平行，将第二延伸部618设置成与该周向侧板724邻接的周向侧板724平行，以将散热器6设置于安装腔721的其中一侧。
或者，换热主体61还可以根据电子元件71等的设置位置固定在电控盒7的其他位置处，本申请实施例不做具体限定。
进一步地，如图12所示，第二延伸部618的数量可以为一个，一个第二延伸部618连接于第一延伸部617的其中一端，以使得换热主体61呈L型。
如图13所示，第二延伸部618的数量可以为两个，两个第二延伸部618分别连接于第一延伸部617的相对两端，并分别向第一延伸部617的同一侧弯折。
具体来说，两个第二延伸部618可以平行间隔设置于第一延伸部617的相对两端，以在保证换热主体61的换热效果的情况下，进一步缩小换热主体61的整体长度，缩小散热器6的体积。另外，将两个第二延伸部618折弯设置于第一延伸部617的同一侧，相对于两个第二延伸部618分别位于第一延伸部617的相对两侧，也可以便于缩短散热器6的整体宽度。
进一步地，两个第二延伸部618可以与第一延伸部617垂直设置，以形成U型的换热主体61。如此，不仅可以缩小换热主体61的整体长度，而且也可以降低第二延伸部618在X方向上所占用的空间，避免两个第二延伸部618与设于安装腔721内的电子元件71产生干涉。
或者，两个第二延伸部618也可以相对第一延伸部617倾斜设置，且两个第二延伸部618相对于第一延伸部617倾斜的角度可以相同也可以不同，以缩短电控盒7的整体宽度。
进一步地，第一延伸部617的延伸长度设置成大于第二延伸部618的延伸长度，进而使得第一延伸部617沿电控盒7的长度方向设置，而第二延伸部618沿电控盒7的宽度或高度方向设置。
进一步地，如图11所示，设于安装腔721内的散热器6的数量可以为一个，一个散热器6可以沿盒体72的长度方向延伸设置于安装腔721内。或者，一个散热器6可以沿盒体72的高度方向延伸设置于安装腔721内。
或者，设于安装腔721内的散热器6的数量可以为至少两个，例如，散热器6的数量可以为两个、三个、四个或者五个等。通过设置数量较多的散热器6，可以提升电控盒7的散热效果。
具体来说，设于安装腔721内的散热器6的数量可以为两个，且两个散热器6的换热主体61均呈L型，两个散热器6沿电控盒7的长度方向(X方向)间隔设置，即，两个散热器6的第一延伸部617沿电控盒7的长度方向(X方向)间隔设置，两个散热器6的第二延伸部618分别位于两个第一延伸部617相互远离的一侧，以避免与设于安装腔721内的电子元件71产生干涉。
可选地，还可以将两个散热器6沿电控盒7的宽度方向(Z方向)并排间隔设置，即，两个散热器6的第一延伸部617沿电控盒7的长度方向(X方向)延伸，并沿电控盒7的宽度方向(Z方向)并排间隔设置，两个散热器6的第二延伸部618可以分别位于对应的第一延伸部617的同一侧或者不同侧。
5.1.固定支架
目前，由于设置于电控盒7内的经济器的体积较大，且形状不规则，导致经济器的固定结构复杂，且安装效率低下。而本申请实施例中的散热器6呈板状设置，可以便于对散热器6进行安装和固定，进而提升装配效率。
在本实施例中，如图14所示，电控盒7可以包括固定支架73，固定支架73连接于换热主体61和盒体72之间，以将换热主体61固定于电控盒7内。
可选地，在本实施例中，固定支架73可以连接在第一延伸部617和周向侧板724之间，固定支架73也可以连接在第二延伸部618和周向侧板724之间，其连接结构大体相同，下面以固定支架73连接在第一延伸部617和周向侧板724之间为例，对换热主体61与盒体72的连接结构进行说明。
如图14所示，固定支架73可包括弯折连接的第一固定部731和第二固定部732，第一固定部731与第一延伸部617焊接连接，第二固定部732与周向侧板724紧固连接。
具体地，第一固定部731焊接于换热主体61的其中一个主表面上，以增大固定支架73与换热主体61的焊接面积，提升焊接强度。通过将第一固定部731和第一延伸部617焊接连接，可以避免在第一延伸部617上穿孔而破坏设于换热主体61内的微通道。第二固定部732可以采用螺钉连接、卡接或者粘接等方式连接于周向侧板724上，以便于对散热器6进行维修或者更换。
其中，换热主体61的主表面指的是换热主体61表面积较大的表面，在本实施例中，如图10所示，换热主体61的主表面指的是平行于XOZ平面的表面。
可选地，如图14所示，第二固定部732与第一固定部731垂直连接，以形成L型的固定支架73。通过将第一固定部731与第二固定部732垂直连接，可以使得固定支架73的受力更加均匀。
或者，如图15所示，固定支架73可包括弯折连接的第一固定部731、第二固定部732和第三固定部733，第一固定部731和第三固定部733相对间隔设置并与底板723连接，第二固定部732和底板723间隔设置，以围设形成夹持槽734，可以将第一延伸部617焊接于第二固定部732背离夹持槽734的一侧，此时，可以将换热主体61与底板723间隔设置，以断开换热主体61与电控盒7的接触，避免换热主体61与电控盒7发生换热，降低散热器6的散热效率。
具体来说，第一固定部731和第三固定部733折弯连接于第二固定部732的相对两端，并位于第二固定部732的同一侧，以围设形成匚型的夹持槽734。第一固定部731和第三固定部733远离第二固定部732的端部连接于底板723上。其中，第二固定部732与换热主体61的连接方式可以与上述实施例中的相同，第一固定部731和第三固定部733与底板723的连接方式可以与上述实施例中的相同，请参照上述实施例中的描述，此处不再赘述。
或者，可以将第一延伸部617设于夹持槽734内，第一延伸部617沿换热主体61的整体宽度方向的相对两侧分别抵接于底板723和第二固定部732，第一延伸部617沿换热主体61的整体高度方向的相对两侧分别抵接于第一固定部731和第三固定部733，以将第一延伸部617保持固定。通过采用夹持的方式固定换热主体61，可以避免损坏换热主体61，并且也可以便于对换热主体61进行维修或者更换。
如本领域技术人员所理解的，上述固定支架可以用于固定本申请所公开的各种形式的散热器，并且其固定位置并不局限于上文所描述的具体位置。
5.2.散热器设置在电控盒内
进一步地，如图11所示，散热器6设置于电控盒7的安装腔721内。具体地，可以将散热器6与设 于安装腔721内的电子元件71导热连接，以用于为电子元件71散热。
具体来说，在图11所示的实施例中，可以将电子元件71与第一延伸部617和/或第二延伸部618导热连接。如本领域技术人员所理解的，也可以将本申请所公开的各种形式的散热器6设置于电控盒7的安装腔721内或应用于电控盒7的散热，并可以以直接或间接方式与电子元件71导热连接。
当将散热器6设置于安装腔721内时，在如图11所示的实施例中，可以将电子元件71与第一延伸部617导热连接，且电子元件71可以与第二延伸部618设置于第一延伸部617的同一侧，以缩短电控盒7的高度，即沿Y方向的尺寸。
或者，可以将电子元件71与第二延伸部618导热连接，并具体可以将电子元件71设置于第二延伸部618朝向第一延伸部617的一侧，以缩短电控盒7的长度，即沿X方向的尺寸。
或者，还可以将电子元件71部分设置于第一延伸部617上，部分设置于第二延伸部618上，以使得电子元件71分布均匀。
由于电子元件71的数量较多，如果将电子元件71与换热主体61一一进行连接会使得电子元件71的安装较为复杂，安装效率低下。
故而，如图11和图16所示，还可以在电控盒7内设置散热固定板74，将电子元件71设置于散热固定板74上，然后将散热固定板74设置于换热主体61上，以通过散热固定板74将电子元件71和换热主体61导热连接，如此，可以极大的提高电子元件71的安装效率。
具体来说，可以将散热固定板74设置于第一延伸部617和/或第二延伸部618上，并将电子元件71设置于散热固定板74背离第一延伸部617和/或第二延伸部618的一侧。
进一步地，可以将散热固定板74设置于换热主体61的主表面上，以增大散热固定板74与换热主体61的接触面积，进而提升热传导效率。并且，换热主体61的主表面对散热固定板74的支撑面较大，可以提升电子元件71的安装稳定性。
其中，散热固定板74可以采用导热性能良好的金属板或者合金板制成，例如，散热固定板74可以采用铝板、铜板、铝合金板等制成，以提升热传导效率。
或者，如图17所示，还可以在散热固定板74内嵌设热管741，热管741用于将较为集中的高密度热源快速导热进而扩散至整个散热固定板74的表面，以使得散热固定板74上的热量分布均匀，增强散热固定板74与换热主体61的换热效果。
其中，如图17中上侧的附图所示，热管741可以呈长条状设置，热管741的数量可以包括多个，多个热管741可以平行间隔排布。或者，如图17中下侧的附图所示，多个热管741也可以顺次连接呈环形或者框型，本申请实施例不做具体限定。
5.3.散热器设置在电控盒外
如图18所示，散热器6设置于电控盒7的外部，可以在电控盒7的盒体72上开设装配口726，并将电子元件71通过装配口726与散热器6导热连接。
具体来说，如图18所示，可以将散热固定板74连接于散热器6上并封堵装配口726，将电子元件71设置于散热固定板74背离散热器6的一侧表面上。
或者，如图19所示，可以设置热管741将电子元件71与散热器6导热连接。例如，热管741可以包括吸热端741a和放热端741b，可以将热管741的吸热端741a插置于安装腔721的内部，并与电子元件71导热连接，以用于吸收电子元件71的热量，将热管741的放热端741b设置于电控盒7的外部，并与散热器6导热连接，以利用散热器6为热管741的放热端741b散热。
5.4.散热翅片
由于电子元件71工作时产生的热量较大，而电控盒7通常为相对密闭的环境，如果电控盒7内的热量不能及时的排出，会导致电控盒7的安装腔721内的温度较高，如此，可能会损坏电子元件71。虽然设置于安装腔721内的散热器6中流动的冷媒会带走部分热量，但是电控盒7的散热性能仍然较差。
故而，如图11和图20所示，可以在电控盒7内设置散热翅片75，并将散热翅片75与换热主体61导热连接，以利用散热翅片75增大换热主体61与电控盒7内的空气的接触面积，便于与空气进行换热，降低安装腔721内的温度，保护电子元件71。
可选地，可以将电子元件71和散热翅片75中的一个设置于第一延伸部617上，将电子元件71和散热翅片75中的另一个设置于第二延伸部618上，以将电子元件71和散热翅片75错开设置，避免电子元件71和散热翅片75产生干涉，并且将电子元件71和散热翅片75之间的距离设置的较大，也可以使得与散热翅片75和电子元件71接触的冷媒的温度均较低，以提升换热主体61的散热效果。
进一步地，如图20所示，散热翅片75的数量可以为一个，散热翅片75沿换热主体61整体高度方向上的尺寸大于换热主体61的整体高度。散热翅片75可以通过焊接、粘接或者紧固连接的方式连接于换热主体61的表面。通过设置数量较少且表面积较大的散热翅片75，一方面可以便于将散热翅片75与换热主体61进行连接，提升散热翅片75与换热主体61的安装效率；另一方面也可以增大散热翅片75与 空气的接触面积，增强换热效果。
如图21所示，散热翅片75的数量可以为多个，每一散热翅片75沿换热主体61整体高度方向上的尺寸等于每一板体沿换热主体61整体高度方向上的尺寸，每一散热翅片75贴附于一个板体上，多个散热翅片75可以沿换热主体61整体高度方向间隔排列，以增大散热翅片75与空气的接触面积。通过将散热翅片75设置为间隔的多个，不仅可以保证散热翅片75的换热效率，而且也可以节省材料，降低生产成本。
在其他实施例中，散热翅片75也可以延伸到电控盒的外侧，例如在盒体72上开设装配口，换热主体61设置在盒体72内，并与电子元件71导热连接，而散热翅片75的一侧与换热主体61导热连接，并经装配口延伸到盒体72的外侧，并可以进一步通过风冷辅助来提高换热主体61的散热能力。
值得注意的是，如本领域技术人员所理解的，上述散热翅片结构适用于本申请描述的各种形式的换热器，而不应该局限于某一个特定实施例。
6.G型换热主体及其与电子元件的配合关系
请参阅图22，本实施例中的散热器6的结构与上述实施例中的散热器6的结构大致相同，不同之处在于，在本实施例中，散热器6还包括第三延伸部619。其中，第一延伸部617和第三延伸部619并排且间隔设置，第二延伸部618连接于第一延伸部617和第三延伸部619的相邻端部之间。
具体来说，第三延伸部619连接于第二延伸部618背离第一延伸部617的一端，并向第二延伸部618朝向第一延伸部617的一侧弯折，以与第一延伸部617间隔设置。如此，可以在保证换热主体61的延伸长度不变的情况下，缩小换热主体61的整体长度和整体宽度，以进一步缩小与散热器6配合的电控盒7的体积。
可选地，如图22所示，第二延伸部618的数量为两个，两个第二延伸部618分别弯折连接于第一延伸部617的相对两端，第三延伸部619的数量为一个，一个第三延伸部619设置在其中一个第二延伸部618背离第一延伸部617的端部，并向靠近另一个第二延伸部618的方向弯折，以形成G型的换热主体61。
或者，第二延伸部618的数量还可以设置为一个，一个第二延伸部618弯折连接于第一延伸部617的其中一端，第三延伸部619的数量为一个，一个第三延伸部619设置在第二延伸部618背离第一延伸部617的端部，并向朝向第一延伸部617的方向弯折。
或者，第二延伸部618的数量可以设置为两个，两个第二延伸部618分别弯折连接于第一延伸部617的相对两端，第三延伸部619的数量为两个，两个第三延伸部619分别连接于两个第二延伸部618背离第一延伸部617的端部，并向相互靠近的方向延伸设置，以进一步缩小换热主体61的整体长度。
进一步地，第三延伸部619可以与第一延伸部617平行间隔设置，以避免第三延伸部619增大换热主体61的整体宽度，并且也可以便于在第一延伸部617和第三延伸部619的间隔内设置电子元件71等，以充分利用电控盒7的内部空间。
具体来说，可以将电子元件71设置在第一延伸部617上，并与第一延伸部617导热连接，且电子元件71位于第一延伸部617和第三延伸部619之间的间隔内。或者，还可以将电子元件71设置在第三延伸部619上，并与第三延伸部619导热连接，且电子元件71位于第一延伸部617和第三延伸部619之间的间隔内。通过将电子元件71设置在第一延伸部617和第三延伸部619之间的间隔内，可以充分利用第一延伸部617和第三延伸部619之间的空间，使得电子元件71和换热主体61的结构更加紧凑。或者，还可以将电子元件71同时设置在第一延伸部617和第三延伸部619上，并将电子元件71同时与第一延伸部617和第三延伸部619导热连接，以进一步提升散热器6与电子元件71之间的换热，提升电子元件71的散热效率。
进一步地，电子元件71的种类有多种，根据电子元件71使用时出现故障的频率可以将电子元件71划分为容易出现故障的和不容易出现故障的。由于第一延伸部617和第三延伸部619之间的空间较小，不便于对电子元件71进行拆装，故而，在本实施例中，可以进一步将不容易出现故障的电子元件71设置在第一延伸部617和第三延伸部619之间，以降低电子元件71的维修几率。
进一步地，散热固定板74除了可以采用上述实施例中的方式固定于第一延伸部617和/或第二延伸部618上，还可以固定在第三延伸部619上。
具体来说，可以将散热固定板74设置于第三延伸部619朝向第一延伸部617的一侧，并将电子元件71设置于散热固定板74朝向第一延伸部617的一侧，以使得电子元件71和换热主体61的结构更加紧凑，避免过多的占用电控盒7的内部空间。
同样地，在本实施例中，散热翅片75除了可以采用上述实施例中的方式固定于第一延伸部617和/或第二延伸部618上，还可以固定在第三延伸部619上。
具体来说，可以将散热翅片75和电子元件71的其中一者设置于第一延伸部617上，并可以将散热翅片75和电子元件71中的另一者设置于第二延伸部618和/或第三延伸部619上，以将散热翅片75和电 子元件71相互错开的设置。
可选地，散热翅片75的数量可以为一个，一个散热翅片75设置于第二延伸部618或者第三延伸部619上。或者，散热翅片75的数量还可以为两个，两个散热翅片75分别设置于第二延伸部618和第三延伸部619上，以增大散热翅片75与空气的接触面积，提升散热器6的散热效果。
7.散热板设置在散热器温度较高的位置
请参阅图23，本实施例中的电控盒7包括盒体72、散热器6和电子元件71，盒体72设有安装腔721，散热器6至少部分设置于安装腔721内，电子元件71设于安装腔721内。其中，盒体72和散热器6的结构与上述实施例中的大致相同，请参照上述实施例中的描述。
可选地，换热主体61可以全部设置于电控盒7的安装腔721内，换热主体61也可以部分设置于电控盒7的安装腔721内，部分凸伸出电控盒7外，以用于与集流管组件62和外部管路连接。
冷媒流的流动使得散热器6的温度较低，由于电控盒7内电子元件71发热使得电控盒7的安装腔721内的温度较高，当电控盒7内温度较高的空气接触到散热器6时容易冷凝，进而在散热器6的表面形成冷凝水。如果生成的冷凝水流动至电子元件71的位置处，容易使得电子元件71短路或者损坏，更严重的会产生火灾隐患。
故而，如图23所示，可以将换热主体61沿冷媒流的流向划分为第一端61a和第二端61b，换热主体61的温度在从第一端61a到第二端61b的方向上逐渐降低，即第一端61a的温度高于第二端61b的温度。电子元件71设置在靠近第一端61a的位置处，并将电子元件71与换热主体61导热连接。需要注意的是，由于换热主体61需要与电控盒7的内部环境或其内部元件进行换热，因此上文以及下文描述的换热主体61的温度是指换热主体61的表面温度。具体来说，换热主体61的表面温度变化由与表面相邻的换热通道决定。例如，当换热主体61的表面所相邻的换热通道为主路通道时，由于主路通道的冷媒流随着流动不断被辅路通道的冷媒流吸热，因此换热主体61的表面温度沿主路通道的冷媒流向逐渐降低，此时第一端61a沿主路通道的冷媒流向位于第二端61b的上游。当换热主体61的表面所相邻的换热通道为辅路通道时，换热主体61的表面温度沿辅路通道的冷媒流向逐渐降升高，此时第一端61a沿辅路通道的冷媒流向位于第二端61b的下游。
因此，通过根据换热主体61上温度的变化，将换热主体61划分为温度较高的第一端61a和温度较低的第二端61b，由于温度较高的第一端61a与热空气之间的温差较小，不会产生冷凝水或者产生的冷凝水的量较少，通过将电子元件71设置在靠近第一端61a的位置处，可以降低电子元件71与冷凝水接触的几率，进而保护电子元件71。
值得注意的是，由于空调一般存在制冷模式和制热模式，而在这两种模式下可能存在冷媒流动方向相反的情况。此时，换热主体61的温度在第一端61a到第二端61b存在相反的变化趋势，即在一种模式下，换热主体61的温度在第一端61a到第二端61b逐渐降低，而在另外一种模式下换热主体61的温度在第一端61a到第二端61b逐渐升高。在本实施例中，优先确保在制冷模式下，换热主体61的温度在第一端61a到第二端61b逐渐降低，理由如下：
当环境温度较低时，例如，当空调装置在冬天工作进行制热时，电控盒7内的空气的温度较低，此时，电控盒7内的空气与散热器6之间的温差较小，空气不容易冷凝形成冷凝水。而当环境温度较高，例如，当空调装置在夏天工作进行制冷时，电控盒7内的空气的温度较高，电控盒7内的空气与散热器6之间的温差较大，空气容易冷凝形成冷凝水。故而，在本实施例中，可以设置至少在空调装置的制冷模式下，换热主体61的温度在从第一端61a到第二端61b的方向上逐渐降低，以避免散热器6在制冷模式下产生冷凝水。
进一步地，将电子元件71设置在靠近第一端61a的位置处指的是，电子元件71在换热主体61上的导热连接位置与第一端61a之间具有第一距离，与第二端61b之间具有第二距离，第一距离小于第二距离。
具体来说，由于换热主体61的温度在从第一端61a到第二端61b的方向上逐渐降低，故而，第一端61a的温度最高，第二端61b的温度最低，换热主体61的温度越高，与电控盒7内的空气之间的温差越小，冷凝水越不容易凝聚。换热主体61的温度越低，与热空气之间的温差越大，冷凝水越容易凝聚。即，在从换热主体61的第一端61a到第二端61b的方向上，产生冷凝水的几率逐渐增大。故而，通过将电子元件71设置的靠近换热主体61温度较高的一端，即设置在冷凝水不易积聚的位置处，可以降低电子元件71与冷凝水接触的风险，进而保护电子元件71。
进一步，如图23所示，可以将换热主体61的延伸方向沿竖直方向设置，并将第一端61a设置在第二端61b的上部，如此，当换热主体61靠近第二端61b的位置处产生冷凝水时，冷凝水会沿竖直方向下流，即冷凝水会向背离电子元件71的方向流动，避免电子元件71与冷凝水接触。
或者，还可以根据需要将换热主体61的延伸方向沿水平方向设置，以便于靠近第二端61b位置处产生的冷凝水在重力的作用下迅速与换热主体61分离，避免与电子元件71接触。或者，在其它实施例中， 还可以将换热主体61的延伸方向相对水平方向倾斜设置，本申请实施例不做具体限定。
可以理解地，本实施例中的散热器6的结构可以设置得与上述实施例中的相同，即采用折弯的换热主体61。或者，本实施例中的散热器6的结构也可以采用直条形的换热主体61。或者，除了可以采用上述的设有微通道的散热器6外，还可以采用其他种类的散热器，本申请实施例不对散热器6的具体结构进行限定。此外，在本申请的其他将散热器应用于电控盒的实施例可以采用本申请所公开的各种散热器，或者本领域公知的其他散热器。
7.1.换热主体内的冷媒流的流向固定
如上文所描述的，由于空调系统处于制冷模式和制热模式时，用于制热或者制冷的冷媒流的流向相反，使得换热主体61沿其延伸方向的温度随着空调装置工作状态的改变而变化，无法保证第一端61a的温度始终高于第二端61b的温度。例如，在图1所示的空调系统1中，第一换热通道610(主路)的冷媒在制冷和制热模式下就存在流向相反的情况。
因此，如图23所示，电控盒进一步包括第一单向导通装置701、第二单向导通装置702、第三单向导通装置703以及第四单向导通装置704。其中，第一单向导通装置701的入口连接室内机(例如图1中的室内换热器5)的一端，第一单向导通装置701的出口连接靠近第一端61a的集流管组件62；第二单向导通装置702的入口连接靠近第二端61b的集流管组件62，第二单向导通装置702的出口连接室内机的一端；第三单向导通装置703的入口连接节流阀(例如图1中的膨胀阀13)的一端，第三单向导通装置703的出口连接靠近第一端61a的集流管组件62；第四单向导通装置704的入口连接靠近第二端61b的集流管组件62，第四导向导通装置的出口连接节流阀的一端。
空调系统1处于制冷模式，压缩机2输出的冷媒流流动至室外换热器4进行换热，冷媒流继续流动至节流阀(膨胀阀13)，而后经第三单向导通装置703进入靠近第一端61a的集流管组件62，并经换热主体61流动至第二端61b，由此，冷媒流在从第一端61a到第二端61b的方向上，与辅路进行换热(即，过冷)，使得换热主体61的温度在从第一端61a到第二端61b的方向上不断降低。从第二端61b中流出的冷媒流经第二单向导通装置702后排出至室内换热器5进行换热。
空调系统1处于制热模式，压缩机2输出的冷媒流流动至室内换热器5进行换热，冷媒流继续流动至电控盒7，并经第一单向导通装置701进入靠近第一端61a的集流管组件62，并经换热主体61流动至第二端61b，由此，冷媒流在从第一端61a到第二端61b的方向上，与辅路进行换热(即，过冷)，使得换热主体61的温度在从第一端61a到第二端61b的方向上不断降低。从第二端61b中流出的冷媒流经第四单向阀704后排出至节流阀，并进入室外换热器4进行换热。
综上，本申请通过在第一端61a和第二端61b之间设置四个单向导通装置，可以使得换热主体61内的冷媒流的流向固定，进而保证电子元件71始终位于换热主体61温度较高的一侧，避免与产生的冷凝水接触。
可选地，第一单向导通装置701、第二单向导通装置702、第三单向导通装置703以及第四单向导通装置704均可以设置为单向阀，在其它实施例中，第一单向导通装置701、第二单向导通装置702、第三单向导通装置703以及第四单向导通装置704还可以设置为电磁阀，本申请实施例对单向导通装置的种类不做具体限定。
8.安装板防止冷凝水外露
请参阅图24，本实施例中的电控盒7包括盒体72、安装板76、电子元件71和散热器6。
其中，盒体72设有安装腔721，安装板76设于安装腔721内，以使得安装腔721形成位于安装板76两侧的第一腔室7212和第二腔室7214，电子元件71设于第二腔室7214内，换热主体61的至少部分设于第一腔室7212内，且与电子元件71导热连接，安装板76用于隔挡散热器6上的冷凝水流入第二腔室7214。
通过在电控盒7内设置将安装腔721间隔开的安装板76，并分别将换热主体61和电子元件71分别设于彼此独立的第一腔室7212和第二腔室7214内，可以将电子元件71与冷凝水完全隔绝，进而避免电子元件71接触冷凝水而发生短路或者损坏。
进一步地，可以采用散热固定板74将电子元件71与换热主体61间接连接。
具体来说，可以在安装板76与散热固定板74对应的位置处开设避让孔762，散热固定板74连接于换热主体61并封堵避让孔762，电子元件71设于散热固定板74背离换热主体61的一侧。如此，可以利用散热固定板74将电子元件71和换热主体61导热连接，并可以利用散热固定板74将第一腔室7212和第二腔室7214间隔开，以避免冷凝水经避让孔762流动至设有电子元件71的第二腔室7214内，进而可以防止冷凝水与电子元件71接触。
进一步地，如果换热主体61上产生了较多的冷凝水，冷凝水积聚后会在重力的作用下下落，滴落的冷凝水不但容易产生较大的噪音，而且较为分散的冷凝水也不利于排出电控盒7。
因此，如图24所示，可以在电控盒7内设置导流板77，导流板77设置于散热器6的下侧，用于收集 自散热器6滴落的冷凝水。导流板77的设置，不仅可以缩小冷凝水滴落的高度，进而降低噪音，而且导流板77也对冷凝水具有一定的积聚作用，便于将冷凝水汇流后一起排出电控盒7。
如图24所示，散热器6固定于电控盒7的底板723上，导流板77的一端连接于底板723，导流板77的另一端向第一腔室7212内部延伸，且散热器6沿竖直方向的投影落在导流板77的内部。如此，可以保证自散热器6上滴落的冷凝水均位于导流板77上，避免冷凝水滴落至电控盒7的其他位置处。
可以理解地，散热器6还可以设置于安装板76上，此时，导流板77的一端连接于安装板76，导流板77的另一端向第一腔室7212内部延伸，且散热器6沿竖直方向的投影落在导流板77的内部。
进一步地，如图25所示，为了便于导流板77上的冷凝水及时排出电控盒7，还可以在盒体72的底壁上开设排水口725，并将导流板77相对盒体72的底壁倾斜设置，冷凝水经导流板77导流后经排水口725排出盒体72。
具体来说，可以在电控盒7的周向侧板724上开设排水口725，导流板77连接于安装板76或者盒体72的底板723，并向排水口725的方向倾斜设置，冷凝水滴落在导流板77上以后，会沿倾斜的导流板77汇聚至排水口725的位置处，进而自排水口725排出电控盒7。
其中，排水口725的数量和大小可以根据冷凝水的多少灵活设置，本申请实施例不做具体限定。
在本实施例中，可以将换热主体61中的冷媒流的流向沿水平方向设置，即换热主体61的延伸方向沿水平方向设置，一方面可以缩短冷凝水在换热主体61上的流动路径，使得冷凝水在重力的作用下尽快滴落至导流板77上，以便于冷凝水及时排出电控盒7，避免与设于安装腔721内的电子元件71接触；另一方面也可以避免导流板77与换热主体61产生干涉，从而可以设置相对较长的换热主体61，提升散热器6的换热效率。
9.散热板设置在散热器的温度较高的位置，并利用冷凝水蒸发吸热
请参阅图26，本实施例中的电控盒7包括盒体72、安装板76和散热器6。
其中，盒体72设有安装腔721，安装板76设于安装腔721内，以使得安装腔721形成位于安装板76两侧的第一腔室7212和第二腔室7214，安装板76上间隔开设有第一通风口764和第二通风口766，以使得第一腔室7212内的气体经第一通风口764流入第二腔室7214，第二腔室7214内的气体经第二通风口766流入第一腔室7212。换热主体61的至少部分设置于第一腔室7212内，且换热主体61中的冷媒流的流向沿第一通风口764和第二通风口766的间隔方向设置，换热主体61的温度在从第二通风口766到第一通风口764的方向上逐渐升高，即换热主体61在靠近第一通风口764的位置处的温度高于靠近第二通风口766的位置处的温度。如上文所描述的，此处所提到的冷媒流可以是图1所示的空调系统中主路冷媒流，也可以是辅路冷媒流。
在本实施例中，换热主体61可以沿水平方向、竖直方向或其他方向设置，在此不做限定。同时，第一通风口764和第二通风口766的数量、位置以及延伸方向也不做限定。
由于换热主体61靠近第二通风口766一侧的温度较低，使得靠近第二通风口766的位置处产生的冷凝水的量较多，本实施例通过在电控盒7的内部设置安装板76，并在安装板76上沿冷媒流的流向开设间隔的第一通风口764和第二通风口766，当第二腔室7214内温度较高的空气经第二通风口766进入第一腔室7212时，会与冷凝水接触进而使得冷凝水蒸发，如此，一方面可以避免冷凝水积聚而需要增设排水结构，另一方面也可以利用冷凝水蒸发吸热而降低散热器6的温度，降低散热器6内的冷媒流的温度，提升散热器6的换热性能。
此处需要注意的是，换热主体61中的冷媒流的流向沿第一通风口764和第二通风口766的间隔方向设置包括冷媒流的流向与该间隔方向平行，可包括冷媒流的流向与该间隔方向之间存在一定的倾斜角度。
如上文所描述的，由于空调一般存在制冷模式和制热模式，而在这两种模式下可能存在冷媒流动方向相反的情况。因此，优先确保在制冷模式下，换热主体61的温度在从第二通风口766到第一通风口764的方向上逐渐升高，理由如下：
当环境温度较低时，例如，当空调装置在冬天工作进行制热时，电控盒7内的空气的温度较低，电控盒7内的空气与散热器6之间的温差较小，空气不容易冷凝形成冷凝水。而当外界环境温度较高，例如，当空调装置在夏天工作进行制冷时，电控盒7内的空气的温度较高，电控盒7内的空气与散热器6之间的温差较大，空气容易冷凝形成冷凝水。故而，在本实施例中，可以设置至少在空调装置的制冷模式下，换热主体61的温度在从第二通风口766到第一通风口764的方向上逐渐升高，以避免散热器6在制冷模式下产生冷凝水。
进一步地，电控盒7还可以包括电子元件71，电子元件71与散热器6导热连接，以利用散热器6对电子元件71进行散热。
可选地，电子元件71可以设置于第一腔室7212内。为了降低电子元件71与冷凝水接触的可能性，可以将电子元件71设置在换热主体61靠近第一通风口764的位置处，并与换热主体61导热连接。
具体来说，气流在由第二通风口766流动至第一通风口764的过程中，经过不断与散热器6进行换热， 使得气流的温度逐渐降低，并且由于靠近第一通风口764位置处的换热主体61的温度较高，故而，可以缩小气流和散热器6之间的温差，降低气流在换热主体61靠近第一通风口764的位置处冷凝的几率，通过将电子元件71设置在换热主体61靠近第一通风口764的位置处，可以避免电子元件71与冷凝水接触，进而保护设于换热主体61上的电子元件71。
可选地，第一通风口764和第二通风口766可以沿水平方向间隔设置，此时，换热主体61的延伸方向也沿水平方向设置。当靠近第二通风口766位置处产生的冷凝水的量较多来不及蒸发时，冷凝水会沿竖直方向下流，由于换热主体61在竖直方向上的长度较小，冷凝水流动一定距离后即会脱离换热主体61，造成冷凝水下滴。
因此，为了避免冷凝水下滴，可以将第一通风口764和第二通风口766沿竖直方向间隔设置，且第一通风口764位于第二通风口766的上部，并将换热主体61的延伸方向也沿竖直方向设置。此时，当靠近第二通风口766位置处产生的冷凝水的量较多来不及蒸发时，冷凝水会沿竖直方向下流，由于换热主体61沿竖直方向的长度较长，会延长冷凝水的流动路径，增大热空气与冷凝水的接触面积，进而提升冷凝水的蒸发量，避免冷凝水下滴。并且通过将第一通风口764设置在第二通风口766的上部，将电子元件71设置在靠近第一通风口764的位置处，可以使得冷凝水向背离电子元件71的方向流动，避免电子元件71与冷凝水接触。
或者，电子元件71还可以设置于第二腔室7214内，并利用散热固定板74与散热器6导热连接。其中，电子元件71与散热固定板74的连接方式可以与上述实施例中的相同，请参照上述实施例中的描述。
进一步地，为了加快第一腔室7212和第二腔室7214内的空气的流动速度，可以在电控盒7内设置散热风扇78，以利用散热风扇78强化第一腔室7212和第二腔室7214的对流效果。
如图26所示，可以将散热风扇78设于第二腔室7214内，散热风扇78在第二腔室7214内提供从第二通风口766流向第一腔室7212的强制对流。
具体来说，由于电子元件71设于第二腔室7214内，电子元件71工作产生的热量会使得第二腔室7214内的温度高于第一腔室7212内的温度，通过在第二腔室7214内设置散热风扇78，可以加速高温空气自第二通风口766流向第一腔室7212，以便于提升冷凝水的蒸发速度。
进一步地，可以将散热风扇78设置于靠近第一通风口764的位置处，以增大散热风扇78与第二通风口766之间的距离，提升散热风扇78的辐射范围，以使得散热风扇78能够吹动更多的空气进入第二通风口766。
进一步地，还可以在电控盒7内设置温度传感器(图中未示出)，温度传感器用于检测第二腔室7214内的温度，以在温度传感器检测到第二腔室7214内的温度超过温度阈值时，控制散热风扇78开始工作或提高转速。
具体来说，可以在电控盒7的第二腔室7214内设置温度传感器，以用于检测第二腔室7214内的温度。当电子元件71工作产生的热量较多使得第二腔室7214内的温度升高至超过温度阈值时，触发温度传感器，温度传感器将高温触发信号传输至主板，主板开启散热风扇78，以利用散热风扇78加速第二腔室7214内的空气的流动，加快空气在第一腔室7212和第二腔室7214之间的循环速度，加快冷凝水的蒸发速度。当第二腔室7214内的温度降低并低于温度阈值时，触发温度传感器，温度传感器将低温触发信号传输至主板，主板进一步关闭散热风扇78，以节省能源。
其中，温度阈值的大小可以根据需要进行设置，本申请实施例不做具体限定。
10.散热器上游设置散热板，下游设置散热翅片
请参阅图27，在本实施例中，电控盒7包括盒体72、散热器6、电子元件71和散热翅片75。
其中，盒体72设有安装腔721，换热主体61的至少部分设于安装腔721内；电子元件71于第一位置处与换热主体61导热连接，散热翅片75于第二位置处与换热主体61导热连接，其中第一位置和第二位置沿换热主体61的冷媒流的流向彼此间隔设置。如上文所描述的，此处所提到的冷媒流可以是图1所示的空调系统中主路冷媒流，也可以是辅路冷媒流。
本实施例通过将电子元件71和散热翅片75沿换热主体61的冷媒流的流向彼此间隔设置，可以充分利用换热主体61上的空间，不仅可以利用换热主体61对电子元件71进行散热，而且也可以利用散热翅片75降低电控盒7的安装腔721内的温度，进而保护设置于安装腔721内的电子元件71。
进一步地，换热主体61包括沿冷媒流的流向彼此间隔设置的第一端61a和第二端61b，其中换热主体61的温度在从第一端61a到第二端61b的方向上逐渐降低，即第一端61a的温度大于第二端61b的温度。第一位置相较于第二位置靠近第一端61a设置。
具体来说，由于换热主体61工作的过程中，换热主体61表面的温度会随着冷媒流的流动方向产生变化，进而形成温度较高的第一端61a和温度较低的第二端61b，由于温度较高的第一端61a与安装腔721内的热空气之间的温差较小，不容易产生冷凝水，故而，可以将电子元件71靠近第一端61a设置，即，将第一位置设置在靠近第一端61a的位置处。由于温度较低的第二端61b与安装腔721内的热空气之间 的温差较大，容易产生冷凝水，故而，可以将散热翅片75靠近第二端61b设置，一方面温度较低的散热翅片75可以保证散热翅片75与热空气具有足够大的温差，便于对电控盒7进行散热，另一方面散热翅片75上冷凝形成的冷凝水也会在热空气的作用下蒸发，冷凝水蒸发吸热，以进一步降低冷媒流的温度，提升散热器6的换热效果。
10.1加速散热气流的流动速度
进一步地，还可以在电控盒7内设置散热风扇78，散热风扇78用于在电控盒7内形成作用于散热翅片75上的散热气流，如此，可以加速散热气流的流动速度，进而提升换热效果。
可选地，散热风扇78可以设置在靠近散热翅片75的位置处，以直接作用于散热翅片75。
或者，如图28所示，还可以在电控盒7内设置安装板76，安装板76设于安装腔721内，以使得安装腔721形成位于安装板76两侧的第一腔室7212和第二腔室7214，安装板76上间隔开设有第一通风口764和第二通风口766，以使得第一腔室7212内的气体经第一通风口764流入第二腔室7214，第二腔室7214内的气体经第二通风口766流入第一腔室7212，换热主体61的至少部分位于第一腔室7212内，电子元件71和散热风扇78设于第二腔室7214内。
通过采用安装板76将安装腔721分隔形成两个相互独立的第一腔室7212和第二腔室7214，可以在第一腔室7212和第二腔室7214内形成循环流动的气流，以增大与设于第一腔室7212内的散热翅片75接触的风量，并且可以便于降温后的气流为设置于第二腔室7214内的电子元件71散热，避免气体混流，以提升散热翅片75的散热效率。
其中，设置于第二腔室7214内的散热风扇78用于加速第二腔室7214内的空气的流动速度，进而加快空气在第一腔室7212和第二腔室7214之间的循环速度，提升电控盒7的散热效率。
进一步地，可以设置散热气流流经散热翅片75时的流动方向垂直于冷媒流的流向。
如图27和图28所示，当换热主体61中的冷媒流沿水平方向时，可以设置散热气流沿竖直方向流动，以避免散热气流流动至电子元件71的位置处。
具体来说，可以将第一通风口764和第二通风口766沿竖直方向间隔设置于散热翅片75的相对两侧。其中，第一通风口764和第二通风口766的数量和排布密度可以根据需要进行设置。
或者，当换热主体61中的冷媒流沿竖直方向时，可以设置散热气流沿水平方向流动，以避免散热气流流动至电子元件71的位置处。或者，散热气流的流向还可以与冷媒流的流向设置为沿其他两个相互垂直的方向，本申请实施例不做具体限定。
进一步地，当采用竖直方向设置的第一通风口764和第二通风口766时，可以将第一通风口764设置在第二通风口766的上部，以使得经第二通风口766进入第一腔室7212中的热空气自动上升至换热主体61的位置处，并与换热主体61进行热交换。
可选地，可以将散热风扇78设置在靠近第一通风口764的位置处，以便于位于第一腔室7212顶部的冷空气及时进入第二腔室7214，并且散热风扇78可以为冷空气加速，以提升电子元件71的散热效率。
11.内部环流
通常情况下，为了对电控盒7进行降温，通常在电控盒7的盒体72上开设与安装腔721连通的散热孔，以通过散热孔与外界空气自然对流进行换热，进而对电控盒7进行降温。但是采用在盒体72上开设散热孔的方式，会降低电控盒7的密封性，外界的水份、灰尘等杂质会经散热孔进入安装腔721内，进而损坏设置于安装腔721内的电子元件。
本实施例为了解决上述问题，可以将电控盒7的盒体72设置为密封结构。具体来说，请参阅图29，电控盒7包括盒体72、安装板76、散热器6、电子元件71以及散热风扇78。
其中，盒体72设有安装腔721，安装板76设于安装腔721内，以使得安装腔721形成位于安装板76两侧的第一腔室7212和第二腔室7214，安装板76上设有间隔的第一通风口764和第二通风口766，第一通风口764和第二通风口766连通第一腔室7212和第二腔室7214；散热器6至少部分设于第一腔室7212内；电子元件71设于第二腔室7214内，并与散热器6导热连接；散热风扇78用于送风，以使得第一腔室7212内的气体经第一通风口764流入第二腔室7214。
本实施例通过将散热器6的至少部分设于第一腔室7212内，将电子元件71和散热风扇78设于第二腔室7214内，并在安装板76上开设间隔的连通第一腔室7212和第二腔室7214的第一通风口764和第二通风口766，如此，电子元件71发热使得第二腔室7214内的空气的温度较高，散热风扇78将热空气送入第二通风口766，由于热空气的密度较小，热空气自然上升以与设于第一腔室7212内的散热器6接触，散热器6用于对热空气进行降温形成冷空气，冷空气自第一通风口764流入第二腔室7214内，散热风扇78用于对冷空气加速，以利用冷空气对设于第二腔室7214内的电子元件71进行降温，与电子元件71热交换后的冷空气的温度升高，温度升高后的冷空气进一步在散热风扇78的作用下继续进入第二通风口766，以此循环，进而通过内循环的方式为设于电控盒7内的电子元件71进行降温，相比于采用在电控盒7上开设散热孔的方式进行降温，本申请中的电控盒7为全密闭电控盒7，可以有效解决防水、防虫、 防尘、防潮等问题，进而提升电控盒7的电控可靠性。
如图29所示，散热风扇78安装于第一通风口764内，散热风扇78所在的平面与安装板76所在的平面共面。
具体来说，可以将散热风扇78通过风扇支架(图中未示出)固定于第一通风口764内，散热风扇78所在的平面具体是指与散热风扇78的转轴方向垂直的平面。通过将散热风扇78设于第一通风口764内，可以缩短散热风扇78与第一腔室7212的距离，便于将冷空气排出第一腔室7212，并且也可以避免散热风扇78占用第二腔室7214内的空间，以使得电控盒7内的元件排布的更加紧凑，进而缩小电控盒7的体积。
由于电子元件71通常安装于安装板76上，如果采用散热风扇78所在的平面与安装板76所在的平面共面的方式，则散热风扇78的气流流向通常垂直于安装板76所在的平面，如此，散热风扇78的气流的流向不能直接作用于电子元件71，并且延长了气流在第二腔室7214内的流动路径。
故而，如图11和图29所示，还可以在电控盒7内设置导风罩79，导风罩79罩设于散热风扇78的外围，用于为散热风扇78吹出的空气导向，使得散热风扇78的出风方向朝向电子元件71。
具体来说，导风罩79连接于安装板76上，且导风罩79的出风口朝向电子元件71所在的位置处，以使得散热风扇78的气流在经过导风罩79的导向后流动至电子元件71的位置处，一方面可以使得冷空气直接作用于电子元件71，以提升电子元件71的散热效率，另一方面，导风罩79也可以增大流经电子元件71的冷空气的速度，以进一步提升电子元件71的散热效率。
在另一实施例中，如图30所示，散热风扇78所在的平面与安装板76所在的平面垂直，散热风扇78的背风侧朝向第一通风口764设置。
具体来说，散热风扇78可以设置于安装板76朝向第二腔室7214的一侧，散热风扇78的转轴方向与安装板76所在的平面平行，散热风扇78的背风侧指的是散热风扇78的进风侧。在本实施例中，可以将散热风扇78设置于第一通风口764和电子元件71之间，经第一通风口764进入第二腔室7214内的冷空气经散热风扇78加速后流出，以提升冷空气的流动速度，提升电控盒7的散热效率。
进一步地，如图30所示，为了使得经第一通风口764进入的冷空气均经散热风扇78加速，还可以在电控盒7内设置回风风道791，回风风道791连接于第一通风口764与散热风扇78之间，用于将第一腔室7212内的空气输送至散热风扇78。如此，经第一通风口764进入的冷空气全部经由回风风道791被送至散热风扇78，并被散热风扇78加速，以提升冷空气的流动速度，提升电控盒7的散热效率。
进一步地，如图30所示，还可以在电控盒7内设置送风风道792，送风风道792连接于散热风扇78背离回风风道791的一侧，用于为散热风扇78吹出的空气导向，使得经过送风风道792导向后的气流流向朝向电子元件71。
具体来说，送风风道792可以用于为散热风扇78吹出的空气导向，使得散热风扇78的出风方向朝向电子元件71，以增大流动至电子元件71位置处的冷空气的比例，进而提升电子元件71的散热效率。
在另一实施例中，如图31所示，散热风扇78还可以设置为离心风扇。
其中，离心风扇是依靠输入的机械能，提高气体压力并排送气体的机械。离心风扇的工作原理是利用高速旋转的叶轮将气体加速。故而，在本实施例中，通过将散热风扇78设置为离心风扇，一方面可以获得高速的冷空气，提升电子元件71的散热效率，另一方面，相对于设置回风风道791和送风风道792的散热风扇78，离心风扇也可以简化散热风扇78的结构，并提升安装效率。
可选地，当电子元件71的设置位置较为分散时，增加导风罩79和送风风道792会使得导向后的气流方向较为固定，虽然可以提升气流方向上的部分电子元件71的散热效率，但是偏离气流方向距离较大的位置处的电子元件71的散热效果较差。
故而，还可以在安装板76上间隔设置导风板(图中未示出)，并在导风板之间形成导风流道，以用于为散热风扇78吹出的空气导向。
例如，可以在分散设置的电子元件71之间设置两个平行间隔的导风板，导风板的延伸方向沿电子元件71的间隔方向，以在两个导风板之间限定出沿电子元件71的间隔方向的导风流道。散热风扇78吹出的冷空气首先流动至部分电子元件71的位置处，以对电子元件71进行散热，经过部分电子元件71后的空气进一步经导风流道流动至另一部分电子元件71的位置处，以用于对另一部分电子元件71进行散热，如此，可以使得电子元件71热量散失的更加均衡，避免局部电子元件71的温度过高，发生损坏。
其中，可以将散热器6设置于电控盒7的内部，即，可以将换热主体61设于第一腔室7212内，以用于对第一腔室7212中的空气进行降温。
或者，还可以将散热器6设置于电控盒7的外部，并将散热器6的至少部分延伸设置于第一腔室7212内。例如，在散热器6包括换热主体61、集成管路组件62以及散热翅片75的情况下，可以在盒体72上开设有与第一腔室7212连通的装配口(未图示)。此时，将换热主体61连接于盒体72的外侧壁，散热翅片75连接于换热主体61上，并经装配口插置于第一腔室7212内。
其中，本实施例中的散热器6与电控盒7的配合方式与上述实施例中的相同，请参照上述实施例中的描述，此处不再赘述。
如图31所示，可以将电子元件71设置在散热风扇78的送风范围内，以便于散热风扇78直接作用于电子元件71以进行降温。
其中，电子元件71例如可以包括共模电感711、电抗712和电容713等发热量较大的主发热元件，以及风机模块714等发热量较小的次发热元件。为了提升主发热元件的散热效率，可以设置主发热元件与第一通风口764之间的距离小于次发热元件与第一通风口764之间的距离，即可以将发热量较大的主发热元件设置在靠近第一通风口764的位置处，将发热量较小的次发热元件设置在远离第一通风口764的位置处，以使得经第一通风口764进入的温度较低的空气首先作用于发热量较大的主发热元件，以提升发热量较大的主发热元件的散热效率。
可选地，可以将第二通风口766开设在散热风扇78送风的末端，并开设在靠近发热量较大的电子元件71的位置处，一方面可以扩大散热风扇78的辐射范围，提升第二腔室7214内空气的循环效率，另一方面也可以使得与发热量较大的电子元件71换热后的热空气及时排出第二腔室7214，避免提升整个第二腔室7214的温度。
进一步地，可以将第二通风口766设置在靠近第一通风口764的位置处，以缩短空气在第二腔室7214内的循环路径，降低空气流动阻力，提升空气的循环效率，进而提升电控盒7的散热效率。
进一步地，第一通风口764和第二通风口766的尺寸大小也可以根据电子元件71的排布情况进行设置。
具体来说，第二通风口766的数量可以具有多个，多个第二通风口766分别设于安装板76的不同位置处。设于发热量较大的电子元件71位置处的第二通风口766的尺寸可以设置的相对较大，第二通风口766的数量也可以设置的相对较多，且多个第二通风口766的分布密度可以设置的相对较大。设于发热量较小的电子元件71位置处的第二通风口766的尺寸可以设置的相对较小，第二通风口766的数量也可以设置的相对较少，且多个第二通风口766的分布密度可以设置的相对较小。
进一步地，可以设置第一通风口764的尺寸大于第二通风口766的尺寸，以提升回风风量，提高散热风扇78的效率。
12.自然对流
请参阅图32和图33，在本实施例中，电控盒7包括盒体72、安装板76、散热器6和主发热元件715。
其中，盒体72设有安装腔721，安装板76设于安装腔721内，以使得安装腔721形成位于安装板76两侧的第一腔室7212和第二腔室7214，安装板76上设有沿竖直方向间隔的第一通风口764和第二通风口766；散热器6至少部分设于第一腔室7212内；主发热元件715设于第二腔室7214内；第一通风口764和第二通风口766连通第一腔室7212和第二腔室7214，以利用主发热元件715和散热器6的温差在第一腔室7212和第二腔室7214之间形成循环流动的散热气流。
具体来说，主发热元件715设于第二腔室7214内，主发热元件715工作产生的热量导致第二腔室7214内的温度升高，由于热空气的密度较小，热空气自然上升并经第二腔室7214顶部的第一通风口764进入第一腔室7212内，热空气接触到散热器6后与散热器6进行热交换，热空气的温度降低，密度增大，在重力的作用下自然下沉至第一腔室7212的底部，并经第二通风口766进入第二腔室7214内，用于对设于第二腔室7214中的主发热元件715降温，与主发热元件715热交换后的热空气进一步上升至第一通风口764的位置处，以此形成在第一腔室7212和第二腔室7214之间的内循环气流。
本实施例通过在安装板76上开设连通第一腔室7212和第二腔室7214的第一通风口764和第二通风口766，并将第一通风口764和第二通风口766沿竖直方向设置，可以利用空气的自身重力在第一腔室7212和第二腔室7214之间循环流动，以用于对设于第二腔室7214内的电子元件71降温，并可以降低电控盒7的整体温度，相比于采用散热风扇78进行送风的方案，本实施例中的电控盒7的结构更加简洁，进而可以提升电控盒7的装配效率并降低电控盒7的生产成本。
进一步地，可以将散热器6沿重力方向设于主发热元件715的上侧，即将散热器6设置在靠近第一腔室7212顶部的位置处，将主发热元件715设置在靠近第二腔室7214底部的位置处。通过此种设置方式，可以缩小散热器6与第一通风口764之间的距离，使得经第一通风口764进入第一腔室7212的热空气快速与散热器6接触进行降温，并在重力的作用下自然下沉。通过缩小主发热元件715与第二通风口766之间的距离，使得经第二通风口766进入第二腔室7214的热空气快速与主发热元件715接触进行升温，并在浮力的作用下自然上升，如此，可以提升电控盒7内的气流的循环速度，提升散热效率。
进一步地，如图33所示，还可以在电控盒7内设置次发热元件716，次发热元件716设于第二腔室7214内，并与换热主体61导热连接，其中，次发热元件716的发热量小于主发热元件715的发热量。
具体来说，在本实施例中，可以将发热量较大的主发热元件715设置在靠近第二通风口766的位置处，一方面可以使得经第一腔室7212进入的冷空气首先与发热量较大的电子元件71接触，提升电子元件71 的散热效率，另一方面也可以使得冷空气和发热量较大的电子元件71之间具有较大的温差，使得冷空气可以迅速升温，进而在浮力的作用下迅速上升。将发热量较小的次发热元件716设置在换热主体61上，并与换热主体61接触，可以利用换热主体61直接对发热量较小的电子元件71进行降温。如此，通过将发热量较大的主发热元件715和发热量较小的次发热元件716分区域设置，可以使得电子元件71的分布合理，并可以充分利用电控盒7的内部空间。
可选地，次发热元件716通过散热固定板74连接于换热主体61上，以提升次发热元件716的装配效率。
其中，次发热元件716与换热主体61的连接方式可以与上述实施例中的相同，具体参照上述实施例中的描述，此处不再赘述。
或者，还可以将散热器6设置于电控盒7的外部，并将散热器6的至少部分延伸设置于第一腔室7212内。
其中，散热器6与电控盒7的配合方式与上述实施例中的相同，请参照上述实施例中的描述。
以上各实施例中的结构可以相互组合使用，并且，可以理解地，上述实施例中的方案除了可以采用前文所述的散热器6外，还可以采用其它种类的散热器6，本申请实施例不做具体限定。
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (14)

  1. 一种换热器，其特征在于，包括：
    换热主体，包括彼此嵌套的第一管体和第二管体，所述第一管体内设置有多个第一微通道，所述第二管体内设置有多个第二微通道；
    集流管组件，包括第一集流管和第二集流管，所述第一集流管设置有第一集流通道，所述第一集流通道用于向所述多个第一微通道提供第一冷媒流和/或收集流经所述多个第一微通道的第一冷媒流，所述第二集流管设置有第二集流通道，所述第二集流通道用于向所述多个第二微通道提供第二冷媒流和/或收集流经所述多个第二微通道的第二冷媒流，以使得流经所述多个第一微通道的第一冷媒流与流经所述多个第二微通道的第二冷媒流之间进行热交换。
  2. 根据权利要求1所述的换热器，其特征在于，所述第一管体套设在所述第二管体的外侧，所述第一管体的外表面设置有平面，形成所述第一管体的换热接触面。
  3. 根据权利要求1所述的换热器，其特征在于，所述第二冷媒流在沿所述多个第二微通道的流动过程中从所述第一冷媒流吸热，以使得所述第一冷媒流过冷，或者所述第一冷媒流在沿所述多个第一微通道的流动过程中从所述第二冷媒流吸热，以使得所述第二冷媒流过冷。
  4. 根据权利要求1所述的换热器，其特征在于，所述第一集流管和所述第二集流管沿所述第一管体和第二管体的延伸方向间隔设置，所述第二微通道贯穿所述第一集流管，并插入到所述第二集流管内，或者所述第一微通道贯穿所述第二集流管，并插入到所述第一集流管内。
  5. 根据权利要求1所述的换热器，其特征在于，所述集流管组件包括总集流管和隔流板，所述隔流板设置在所述总集流管内，以使得所述总集流管设置成由所述隔离板分隔的所述第一集流管和所述第二集流管，或者使得所述总集流管设置成由所述隔流板分隔的两个所述第一集流管或两个所述第二集流管。
  6. 根据权利要求5所述的换热器，其特征在于，所述总集流管设置成由所述隔流板分隔的所述第一集流管和所述第二集流管，所述第一微通道贯穿所述总集流管的侧壁并插入到所述第一集流管内，所述第二微通道贯穿所述总集流管的侧壁和所述隔流板并插入到所述第二集流管内，或者所述第二微通道贯穿所述总集流管的侧壁并插入到所述第二集流管内，所述第一微通道贯穿所述总集流管的侧壁和所述隔流板并插入到所述第一集流管内。
  7. 根据权利要求5所述的换热器，其特征在于，所述总集流管设置成由所述隔流板分隔的两个所述第一集流管，所述第一微通道的一端贯穿所述总集流管的侧壁并插入到所述两个第一集流管中的一个所述第一集流管内，所述第一微通道的另一端贯穿所述总集流管的侧壁和所述隔流板并插入到所述两个第一集流管中的另一个所述第一集流管内；或者
    所述总集流管设置成由所述隔流板分隔的两个所述第二集流管，所述第二微通道的一端贯穿所述总集流管的侧壁并插入到所述两个第二集流管中的一个所述第二集流管内，所述第二微通道的另一端贯穿所述总集流管的侧壁和所述隔流板并插入到所述两个第二集流管中的另一个所述第二集流管内。
  8. 根据权利要求1所述的换热器，其特征在于，所述第一集流管套设在所述第二集流管的外侧，所述第一微通道贯穿所述第一集流管的侧壁，并插入到所述第一集流管内，所述第二微通道贯穿所述第一集流管和所述第二集流管的侧壁，并插入到所述第二集流管内；或者
    所述第二集流管套设在所述第一集流管的外侧，所述第二微通道贯穿所述第二集流管的侧壁，并插入到所述第二集流管内，所述第一微通道贯穿所述第二集流管和所述第一集流管的侧壁，并插入到所述第一集流管内。
  9. 根据权利要求1所述的换热器，其特征在于，所述第一集流管的数量为两个，所述两个第一集流管中的一个用于向所述多个第一微通道提供第一冷媒流，所述两个第一集流管中的另一个用于收集流经所述多个第一微通道的所述第一冷媒流；所述第二集流管的数量为两个，所述两个第二集流管中的一个用于向所述多个第二微通道提供所述第二冷媒流，所述两个第二集流管中的另一个用于收集流经所述多个第二微通道的所述第二冷媒流。
  10. 根据权利要求1所述的换热器，其特征在于，所述第一微通道的延伸方向与所述第二微通道的延伸方向彼此平行，所述换热主体包括至少两组所述第一管体和第二管体，所述至少两组第一管体和第二管体沿所述延伸方向的垂直方向彼此间隔，所述至少两组第一管体和第二管体中的所述第一管体的同一端与同一个所述第一集流管连接，所述至少两组第一管体和第二管体中的所述第二管体的同一端与同一个所述第二集流管连接。
  11. 一种电控盒，其特征在于，所述电控盒包括盒体和如权利要求1-10任意一项所述的换热器，所述换热器设置在所述盒体，所述换热器用于为所述电控盒进行散热。
  12. 根据权利要求11所述的电控盒，其特征在于，所述电控盒还包括安装板、电子元件和散热风扇，所述安装板设置在所述盒体的安装腔内，以使得所述安装腔形成位于所述安装板两侧的第一腔室和第二腔室，所述安装板上设有间隔的第一通风口和第二通风口，所述第一通风口和所述第二通风口连通所述第一 腔室和所述第二腔室；所述电子元件设置在所述第二腔室内，并与所述换热器导热连接，所述散热风扇用于送风，以使得所述第一腔室内的气体经所述第一通风口流入所述第二腔室。
  13. 根据权利要求11所述的电控盒，其特征在于，所述电控盒还包括安装板和电子元件，所述安装板设于所述盒体的安装腔内，以使得所述安装腔形成位于所述安装板两侧的第一腔室和第二腔室，所述安装板上设有沿竖直方向间隔的第一通风口和第二通风口，所述电子元件设置在所述第二腔室，所述第一通风口和第二通风口连通所述第一腔室和所述第二腔室，以利用所述电子元件和所述散热器的温差在所述第一腔室和所述第二腔室之间形成循环流动的散热气流。
  14. 一种空调系统，其特征在于，所述空调系统包括压缩机、四通阀、室外换热器、室内换热器和如权利要求1-13任意一项所述的换热器，所述换热器设置在所述室外换热器和所述室内换热器之间，所述压缩机通过所述四通阀在所述室外换热器和所述室内换热器之间提供循环流动的冷媒流。
PCT/CN2021/114358 2020-08-26 2021-08-24 换热器、电控盒以及空调系统 WO2022042564A1 (zh)

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