WO2018179311A1 - Échangeur de chaleur et dispositif à cycle de réfrigération doté de ce dernier - Google Patents

Échangeur de chaleur et dispositif à cycle de réfrigération doté de ce dernier Download PDF

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Publication number
WO2018179311A1
WO2018179311A1 PCT/JP2017/013521 JP2017013521W WO2018179311A1 WO 2018179311 A1 WO2018179311 A1 WO 2018179311A1 JP 2017013521 W JP2017013521 W JP 2017013521W WO 2018179311 A1 WO2018179311 A1 WO 2018179311A1
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WIPO (PCT)
Prior art keywords
outflow
heat transfer
plate
inflow
refrigerant
Prior art date
Application number
PCT/JP2017/013521
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English (en)
Japanese (ja)
Inventor
良太 赤岩
真哉 東井上
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/013521 priority Critical patent/WO2018179311A1/fr
Priority to CN201780087117.XA priority patent/CN110476036B/zh
Priority to JP2019508086A priority patent/JP6716016B2/ja
Publication of WO2018179311A1 publication Critical patent/WO2018179311A1/fr

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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
    • F25B39/00—Evaporators; Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators

Definitions

  • the present invention relates to a heat exchanger and a refrigeration cycle apparatus including the heat exchanger, and more particularly to a heat exchanger including a main heat exchange unit and a sub heat exchange unit, and a refrigeration cycle apparatus including such a heat exchanger. Is.
  • a heat pump device such as an air conditioner or a car air conditioner
  • the heat exchanger when a heat exchanger is used to lower the temperature of the air, the heat exchanger is called an evaporator or an evaporator.
  • the density of the gas refrigerant and the liquid refrigerant differ by several tens of times.
  • the liquid refrigerant mainly absorbs the heat of the air, so that the liquid refrigerant evaporates and changes into a gas refrigerant.
  • a single-phase gas refrigerant is sent out from the heat exchanger.
  • the heat absorbed when the liquid refrigerant undergoes a phase change is referred to as latent heat.
  • latent heat When the latent heat is taken away, the air becomes cold and is sent out from the heat exchanger.
  • the heat exchanger when a heat exchanger is used to raise the temperature of the air, the heat exchanger is called a condenser or a condenser.
  • the high-temperature and high-pressure single-phase gas refrigerant discharged from the compressor flows into the heat exchanger that functions as a condenser.
  • air absorbs the heat of the single-phase gas refrigerant that has flowed in, so that the gas refrigerant condenses and changes into a single-phase liquid refrigerant.
  • the single-phase liquid refrigerant is further subcooled.
  • the supercooled single-phase liquid refrigerant is sent out from the heat exchanger.
  • the heat released when the gas refrigerant undergoes a phase change to the liquid refrigerant is referred to as latent heat.
  • the heat released when the single-phase liquid refrigerant is supercooled is called sensible heat.
  • the air becomes warm air by absorbing the latent heat and sensible heat, and is sent out from the heat exchanger.
  • the heat exchanger has a simple cycle operation in which the refrigerant flows in one direction and a reverse cycle operation in which the refrigerant flows in a direction opposite to the one direction. It has been treated so that it can be used for both purposes. Therefore, when the refrigerant flowing in the heat exchanger is, for example, divided into three branches and flows in parallel, even if the heat exchanger functions as both an evaporator and a condenser, In the heat exchanger, the refrigerant is branched into three and flows in parallel.
  • one heat exchanger is changed into two, a main heat exchange section and a sub heat exchange section.
  • Split heat exchangers have been proposed.
  • the number of passes of the refrigerant in the main heat exchange unit and the number of passes of the refrigerant in the sub heat exchange unit are set to different numbers. For this reason, in the heat exchanger, a flow path component that collects refrigerant flow paths or branches the flow paths is required between the main heat exchange section and the sub heat exchange section.
  • the pressure loss of the refrigerant can be reduced in the main heat exchange part, although the pressure loss of the refrigerant is high in the auxiliary heat exchange part.
  • the flow rate of the refrigerant can be increased in the auxiliary heat exchange unit, although the flow rate of the refrigerant is slow in the main heat exchange unit.
  • the proposed heat exchanger can exhibit both the heat exchange performance as an evaporator and the heat exchange performance as a condenser.
  • the main heat exchange unit and the sub heat exchange unit It is done to divide.
  • the present invention has been made as part of such development, and one object is to provide a heat exchanger that can be further reduced with respect to production costs, and another object is such heat exchange. It is providing the refrigeration cycle apparatus provided with the vessel.
  • the heat exchanger according to the present invention includes a first heat exchange part, a second heat exchange part, and a flow path part.
  • the first heat exchange unit has a first heat transfer tube.
  • a 2nd heat exchange part is arrange
  • the flow path part is connected between the first heat exchange part and the second heat exchange part, and the working fluid flows.
  • the flow path portion includes a first plate-like body, a second plate-like body, and a third plate-like body.
  • the first plate-like body includes a first outflow / inflow hole and a second outflow / inflow hole connected to the first heat exchange part, and a third outflow / inflow hole and a fourth outflow respectively connected to the second heat exchange part.
  • a plurality of working fluid inflow / outflow holes including the inflow holes are formed.
  • the second plate-like body communicates with the first outflow / inflow hole and the fourth outflow / inflow hole to connect the first outflow / inflow hole and the fourth outflow / inflow hole, and the second outflow / inflow hole And a third outflow / inflow hole are formed, and a working fluid passage including a second passage connecting the second outflow / inflow hole and the third outflow / inflow hole is formed and stacked on the first plate-like body.
  • the third plate-like body is laminated on the second plate-like body so as to cover the working fluid passage from the side opposite to the side where the working fluid passage communicates with the working fluid inflow / outflow hole with respect to the second plate-like body. Yes.
  • the refrigeration cycle apparatus is a refrigeration cycle apparatus provided with the heat exchanger.
  • the flow path portion that connects the first heat exchange portion and the second heat exchange portion is formed from the first plate-like body, the second plate-like body, and the third plate-like body. Therefore, the production cost can be reduced.
  • the refrigeration cycle apparatus according to the present invention can contribute to the reduction of the production cost of the refrigeration cycle apparatus by reducing the production cost of the heat exchanger.
  • FIG. 3 is a perspective view showing a connection relationship of refrigerant flow paths in the outdoor heat exchanger according to the first example of the first embodiment.
  • it is a disassembled perspective view which shows the structure of the flow-path part applied to the outdoor heat exchanger which concerns on a 1st example.
  • it is an exploded perspective view showing the flow of refrigerant in the flow path section when the outdoor heat exchanger according to the first example functions as an evaporator.
  • FIG. 1 It is a perspective view which shows the connection relation of the flow path of the refrigerant
  • FIG. 6 is a perspective view showing a connection relationship of refrigerant flow paths in an outdoor heat exchanger according to Embodiment 2.
  • it is a disassembled perspective view which shows the structure of the flow-path part applied to the outdoor heat exchanger.
  • it is a disassembled perspective view which shows the flow of the refrigerant
  • FIG. 6 is a perspective view showing a connection relationship of refrigerant flow paths in an outdoor heat exchanger according to Embodiment 3.
  • it is a disassembled perspective view which shows the structure of the flow-path part applied to the outdoor heat exchanger.
  • FIG. 7 is an exploded perspective view schematically showing the concept of the structure of an outdoor heat exchanger as an example of a heat exchanger according to Embodiment 4.
  • it is a perspective view which shows the connection relation of the flow path of the refrigerant
  • it is a disassembled perspective view which shows the structure of the flow-path part applied to the outdoor heat exchanger.
  • FIG. 10 is a perspective view showing a connection relationship of refrigerant flow paths in an outdoor heat exchanger according to Embodiment 5.
  • it is a disassembled perspective view which shows the structure of the flow-path part applied to the outdoor heat exchanger.
  • FIG. 1 it is a disassembled perspective view which shows the flow of the refrigerant
  • FIG. 1 it is a perspective view which shows the connection relation of the flow path of the refrigerant
  • a refrigeration cycle apparatus equipped with one outdoor heat exchanger and one indoor heat exchanger such as a room air conditioner for home use or a packaged air conditioner for shops or offices, is taken as an example.
  • the air conditioner 1 includes a compressor 3, an indoor heat exchanger 5, an indoor fan 6, an expansion valve 7, an outdoor heat exchanger 9, an outdoor fan 13, and a four-way valve 15.
  • the compressor 3, the indoor heat exchanger 5, the expansion valve 7, the outdoor heat exchanger 9 and the four-way valve 15 are connected by a refrigerant pipe 16.
  • the outdoor heat exchanger 9 includes a main heat exchange unit 11 as a first heat exchange unit and a sub heat exchange unit 12 as a second heat exchange unit.
  • a main heat exchange unit 11 is disposed on the sub heat exchange unit 12.
  • a flat first heat transfer tube 21 having a major axis and a minor axis in cross-sectional shape is disposed.
  • sixteen first heat transfer tubes 21 are arranged at intervals in the minor axis direction.
  • a flat second heat transfer tube 23 is disposed.
  • four second heat transfer tubes 23 are arranged at intervals in the minor axis direction.
  • the 16 1st heat exchanger tubes 21 specifies with the number of steps from the bottom.
  • the first heat transfer tube 21 at the bottom is the first heat transfer tube 21 at the first stage
  • the first heat transfer tube 21 at the top is the first heat transfer tube 21 at the sixteenth stage.
  • the number of stages from the bottom is specified.
  • the number of the 1st heat exchanger tubes 21 and the number of the 2nd heat exchanger tubes 23 are an example, Comprising: These numbers are not restricted.
  • the outdoor heat exchanger 9 is provided with a flow path portion 30 that is connected between one end side of the 16 first heat transfer tubes 21 and one end side of the four second heat transfer tubes 23 and through which the refrigerant flows. ing.
  • the channel portion 30 is formed of a plate-like body.
  • the other end side of the 16 first heat transfer tubes 21 is connected to a refrigerant pipe 16 connected to the compressor 3 (four-way valve 15) (see FIG. 1).
  • the other end sides of the four second heat transfer tubes 23 are connected to a refrigerant pipe 16 connected to the expansion valve 7 (see FIG. 1).
  • the refrigerant in the two-phase state flows into the outdoor heat exchanger 9.
  • the outdoor heat exchanger 9 functions as an evaporator. In the outdoor heat exchanger 9, heat exchange is performed between the refrigerant flowing in the two-phase state and the air supplied by the outdoor fan 13.
  • the liquid refrigerant evaporates and becomes a low-pressure gas refrigerant (single phase).
  • the low-pressure gas refrigerant sent out from the outdoor heat exchanger 9 flows into the compressor 3 through the four-way valve 15.
  • the low-pressure gas refrigerant that has flowed into the compressor 3 is compressed to become a high-temperature and high-pressure gas refrigerant, and is discharged from the compressor 3 again. Thereafter, this cycle is repeated.
  • the high-pressure liquid refrigerant sent out from the outdoor heat exchanger 9 becomes a two-phase refrigerant consisting of a low-pressure gas refrigerant and a liquid refrigerant by the expansion valve 7.
  • the two-phase refrigerant flows into the indoor heat exchanger 5.
  • heat exchange is performed between the refrigerant flowing in the two-phase state and the air supplied by the indoor fan 6.
  • the liquid refrigerant evaporates to become a low-pressure gas refrigerant (single phase).
  • the low-pressure gas refrigerant sent out from the indoor heat exchanger 5 flows into the compressor 3 through the four-way valve 15.
  • the low-pressure gas refrigerant that has flowed into the compressor 3 is compressed to become a high-temperature and high-pressure gas refrigerant, and is discharged from the compressor 3 again. Thereafter, this cycle is repeated.
  • the outdoor heat exchanger 9 functions as an evaporator.
  • the refrigerant in a two-phase state sent from the expansion valve 7 is branched into four flow paths by a distributor (not shown), and corresponding four second heat transfer tubes 23 arranged in the sub heat exchange unit 12. Each flowing through.
  • the refrigerant that has flowed through the four second heat transfer tubes 23 flows through the corresponding first sixteen heat transfer tubes 21 arranged in the main heat exchange unit 11 via the flow path portion 30.
  • the refrigerant that has flown through the 16 first heat transfer tubes 21 is joined by a distributor (not shown) and flows toward the compressor 3 (four-way valve 15).
  • the outdoor heat exchanger 9 functions as a condenser.
  • the high-temperature and high-pressure gas refrigerant sent from the compressor 3 is branched into 16 flow paths by a distributor (not shown), and the corresponding 16 first heat transfer tubes 21 arranged in the main heat exchange unit 11. Each flowing.
  • the refrigerant that has flown through the 16 first heat transfer tubes 21 flows through the flow path portion 30 and the corresponding four second heat transfer tubes 23 arranged in the auxiliary heat exchange unit 12.
  • the refrigerant that has flowed through the four second heat transfer tubes 23 is merged by a distributor (not shown) and flows toward the expansion valve 7.
  • the refrigerant flows between the main heat exchange unit 11 and the sub heat exchange unit 12 through the flow path unit 30.
  • the flow path portion 30 is formed by a laminated plate-like body.
  • the outdoor heat exchanger 9 provided with the flow path part 30 will be specifically described.
  • Embodiment 1 FIG.
  • distributor provided in the outdoor heat exchanger are demonstrated.
  • a distributor 17 is connected to one end side of the 16 first heat transfer tubes 21 arranged in the main heat exchange unit 11. Further, a distributor 18 is connected to one end side of the four second heat transfer tubes 23 arranged in the sub heat exchange unit 12.
  • the distributors 17 and 18 and the first heat transfer tubes 21 and 23 are connected via a joint 59.
  • An opening corresponding to the cross-sectional shape of the flat first heat transfer tube 21 is formed on one end side of the joint 59.
  • a circular opening is formed on the other end side of the joint 59.
  • One end side of the joint 59 is connected to the first heat transfer tube 21 or the second heat transfer tube 23, and the other end side of the joint 59 is connected to the distributor 17 or the distributor 18.
  • the distributor 17 includes a distributor 17a and a distributor 17b. Of the 16 first heat transfer tubes 21, the first to the 16th heat transfer tubes 21 are connected to the distributor 17a, and the first to eighth heat transfer tubes 21 are the distributors. 17b.
  • the distributor 18 includes a distributor 18a and a distributor 18b. Of the four second heat transfer tubes 23, the third and fourth second heat transfer tubes 23 are connected to the distributor 18a, and the first and second second heat transfer tubes 23 are connected to the distributor 18b. It is connected.
  • the flow path unit 30 connects the distributor 17a and the distributor 18b, and connects the distributor 17b and the distributor 18a.
  • the flow path unit 30 includes a refrigerant passage 41 as a first passage and a refrigerant passage 42 as a second passage.
  • the distributor 17 a and the distributor 18 b are connected by the refrigerant passage 42.
  • the distributor 17b and the distributor 18a are connected by the refrigerant passage 41.
  • Both the refrigerant passage 41 and the refrigerant passage 42 are formed as a single plate-like body.
  • the flow path portion 30 includes a plate-like body 31 as a first plate-like body, a plate-like body 32 as a second plate-like body, and a plate-like body 33 as a third plate-like body. It is formed from a plate-like body.
  • the plate-like body 31, the plate-like body 32, and the plate-like body 33 are laminated and bonded to each other by brazing. Two outflow / inflow holes 51 and two outflow / inflow holes 53 are formed in the plate-like body 31.
  • the upper inflow / outflow hole 51 is connected to the distributor 17a, and the lower outflow / inflow hole 51 is connected to the distributor 17b.
  • the upper inflow / outflow hole 53 is connected to the distributor 18a, and the lower outflow / inflow hole 53 is connected to the distributor 18b.
  • Two refrigerant passages 41 and 42 are formed in the plate-like body 32.
  • the refrigerant passages 41 and 42 are formed along the longitudinal direction so as to penetrate the plate-like body 32.
  • the refrigerant passage 41 connects between the distributor 17b (first heat transfer tube 21) and the distributor 18a (second heat transfer tube 23).
  • the refrigerant passage 42 connects between the distributor 17a (first heat transfer tube 21) and the distributor 18b (second heat transfer tube 23).
  • the lower end side of the refrigerant passage 41 communicates with the outflow / inflow hole 53 (fourth outflow / inflow hole), and is connected to the second heat transfer tube 23 through the outflow / inflow hole 53 and the distributor 18a.
  • the upper end side of the refrigerant passage 41 communicates with the outflow / inflow hole 51 (first outflow / inflow hole) and is connected to the first heat transfer tube 21 through the outflow / inflow hole 51 and the distributor 17b.
  • the lower end side of the refrigerant passage 42 communicates with the outflow / inflow hole 53 (third outflow / inflow hole) and is connected to the second heat transfer pipe 23 through the outflow / inflow hole 53 and the distributor 18b.
  • the upper end side of the refrigerant passage 42 communicates with the outflow / inflow hole 51 (second outflow / inflow hole) and is connected to the first heat transfer tube 21 through the outflow / inflow hole 51 and the distributor 17a.
  • the plate-like body 33 is formed so that the refrigerant passages 41, 42 cover the refrigerant passages 41, 42 from the side opposite to the side where the refrigerant passages 41, 42 communicate with the inflow / outflow holes 51, 53 with respect to the plate-like body 32. 32.
  • the side of the refrigerant passages 41 and 42 opposite to the side communicating with the outflow / inflow holes 51 and 53 is closed by the plate 33, and the refrigerant passages 41 and 42 function as passages through which the refrigerant flows.
  • the plate-like body 33 serves as a lid for the refrigerant passages 41 and 42.
  • the flow path portion 30 of the outdoor heat exchanger 9 is configured as described above.
  • the refrigerant that has flowed into the distributor 18 a flows into the refrigerant passage 41 from the outflow / inflow hole 53.
  • the refrigerant that has flowed into the refrigerant passage 41 flows upward through the refrigerant passage 41 and flows into the distributor 17b from the inflow / outflow holes 51.
  • the refrigerant that has flowed into the distributor 17b is branched into eight flow paths, and flows through the first heat transfer tubes 21 from the first stage to the eighth stage arranged in the main heat exchanging part 11 through the joint 59, respectively.
  • the flow path portion 30 is formed by the plate-like bodies 31, 32, and 33, which can contribute to reduction in production costs. This will be described in comparison with an outdoor heat exchanger according to a comparative example.
  • the distributor 18a and the distributor 17b are connected by a refrigerant pipe 141.
  • the distributor 18b and the distributor 17a are connected by a refrigerant pipe 142.
  • symbol is attached
  • the refrigerant that has flowed through the auxiliary heat exchange unit 12 (second heat transfer pipe 23) is distributed to the distributor 18 (18a, 18b). Flows in.
  • the refrigerant flowing into the distributor 18a flows through the refrigerant pipe 141, and then flows through the main heat exchange unit 11 (first heat transfer pipe 21) through the distributor 17b.
  • the refrigerant flowing into the distributor 18b flows through the refrigerant pipe 142, and then flows through the main heat exchange unit 11 (first heat transfer pipe 21) through the distributor 17a.
  • the distributor 17 connected to the main heat exchange unit 11 and the distribution connected to the sub heat exchange unit 12 are used.
  • the vessel 18 is connected by a flow path portion 30 having refrigerant passages 41 and 42.
  • the flow path portion 30 is formed by laminating a plate-like body 32 formed with penetrating portions serving as the refrigerant passages 41 and 42 together with the plate-like body 31 and the plate-like body 33.
  • the main heat exchanging portion 11 and the auxiliary heat are provided by one flow path portion 30 in which the plate-like bodies 31, 32, and 33 are laminated.
  • the exchange unit 12 can be connected.
  • the manufacturing cost of the outdoor heat exchanger 9 can be reduced.
  • the inflow / outflow holes 51 and 53 and the refrigerant passages 41 and 42 can be formed by punching the plate-like bodies 31 and 32, and the flow path portion 30 can be easily manufactured.
  • shortening of the manufacturing construction period of the outdoor heat exchanger 9 can also be aimed at.
  • the outdoor heat exchanger 9 as a unit can be downsized as compared with the case where the two refrigerant pipes 141 and 142 are arranged. Can also contribute.
  • the outdoor heat exchanger Next, the outdoor heat exchanger according to the second example will be described.
  • the flow path unit 30 connects the distributor 17a and the distributor 18b, and connects the distributor 17b and the distributor 18a.
  • the distributor 17a and the distributor 18b are connected by a refrigerant passage 42.
  • the distributor 17b and the distributor 18a are connected by a refrigerant passage 41.
  • the refrigerant passage 41 is formed in one plate-like body, and the refrigerant passage 42 is formed in another one plate-like body.
  • the flow path section 30 includes a plate-like body 32a and a plate-like body 32b as second plate-like bodies, and a plate-like body 33a and a plate-like body 33b as third plate-like bodies. It is formed from a plate-like body.
  • symbol is attached
  • a refrigerant passage 41 is formed in the plate-like body 32a, and a refrigerant passage 42 is formed in the plate-like body 32b.
  • the plate-like body 33b is interposed between the plate-like body 32a and the plate-like body 32b.
  • the plate-like body 33 b serves as a lid for the refrigerant passage 41.
  • the plate-like body 33 a serves as a lid for the refrigerant passage 42.
  • Each of the plate-like body 32a and the plate-like body 33b is formed with a through-hole 57 communicating with the upper inflow / outflow hole 51 and a through-hole 57 communicating with the lower outflow / inflow hole 53. .
  • the refrigerant passage 41 connects between the distributor 17b (first heat transfer tube 21) and the distributor 18a (second heat transfer tube 23).
  • the lower end side of the refrigerant passage 41 communicates with the outflow / inflow hole 53 and is connected to the second heat transfer tube 23 through the outflow / inflow hole 53 and the distributor 18a.
  • the upper end side of the refrigerant passage 41 communicates with the outflow / inflow hole 51 and is connected to the first heat transfer tube 21 through the outflow / inflow hole 51 and the distributor 17b.
  • the refrigerant passage 42 connects between the distributor 17a (first heat transfer tube 21) and the distributor 18b (second heat transfer tube 23).
  • the refrigerant flow when the outdoor heat exchanger 9 functions as an evaporator will be described.
  • the two-phase refrigerant sent from the expansion valve 7 flows through the auxiliary heat exchanger 12 (second heat transfer tube 23) and into the distributor 18a and the distributor 18b.
  • the refrigerant that has flowed into the distributor 18 a flows into the refrigerant passage 41 from the outflow / inflow hole 53.
  • the refrigerant that has flowed into the refrigerant passage 41 flows upward through the refrigerant passage 41 and flows into the distributor 17b from the inflow / outflow holes 51.
  • the refrigerant that has flowed into the distributor 18 b flows into the refrigerant passage 42 from the inlet / outlet hole 53 through the through hole 57.
  • the refrigerant that has flowed into the refrigerant passage 42 flows upward through the refrigerant passage 42, and then flows into the distributor 17 a from the through hole 57 through the inflow / outflow hole 51.
  • the refrigerant that has flowed into the distributor 17a and the distributor 17b flows through the main heat exchange unit 11 (first heat transfer pipe 21), joins, and then is sent to the compressor 3 (four-way valve 15).
  • the flow path portion 30 including the refrigerant passages 41 and 42 is formed by plate-like bodies 31, 32 a, 32 b, as in the outdoor heat exchanger 9 according to the first example.
  • the manufacturing period of the outdoor heat exchanger 9 can be shortened. Furthermore, it can contribute to size reduction of the outdoor heat exchanger 9 as a unit.
  • Embodiment 2 an example of the outdoor heat exchanger of the aspect to which the flow-path part which has a distribution function was attached is demonstrated.
  • the flow path part 30 includes one end side of the 16 first heat transfer tubes 21 arranged in the main heat exchange part 11 and four second heat transfer parts arranged in the sub heat exchange part 12. One end of the heat tube 23 is connected. One end side of the first heat transfer tube 21 and the flow path portion 30 are connected via a joint 59. One end side of the second heat transfer tube 23 and the flow path portion 30 are connected via a joint 59.
  • the flow path unit 30 includes a refrigerant passage 41 and a refrigerant passage 42.
  • the third and fourth second heat transfer tubes 23 arranged in the auxiliary heat exchange unit 12 and the first to eighth heat transfer tubes 21 arranged in the main heat exchange unit 11 include:
  • the refrigerant passage 41 is connected.
  • the refrigerant passage 42 is connected.
  • the refrigerant passage 41 is formed in one plate-like body, and the refrigerant passage 42 is formed in another one plate-like body.
  • symbol is attached
  • the flow path portion 30 is formed of five plate-like bodies including a plate-like body 31, a plate-like body 32a, a plate-like body 33b, a plate-like body 32b, and a plate-like body 33a.
  • the plate-like body 31, the plate-like body 32a, the plate-like body 33b, the plate-like body 32b and the plate-like body 33a are laminated and bonded to each other by brazing.
  • the plate-like body 31 is formed with 16 outflow / inflow holes 51 and 4 outflow / inflow holes 53. Out of the 16 outflow / inflow holes 51, the 8 outflow / inflow holes 51 from the top are respectively connected to the corresponding first 9th through 16th first heat transfer tubes 21 among the 16 first heat transfer tubes 21. Connected. Out of the 16 outflow / inflow holes 51, the 8 outflow / inflow holes 51 from the bottom are respectively connected to the corresponding first to eighth heat transfer tubes 21 of the first heat transfer tubes 21. Connected.
  • the two outflow / inflow holes 53 from the top are connected to the corresponding second and second second heat transfer tubes 23 of the four second heat transfer tubes 23, respectively. Is done.
  • the two outflow / inflow holes 53 from the bottom are respectively connected to the corresponding first-stage and second-stage second heat transfer pipes 23 out of the four second heat transfer pipes 23. Is done.
  • a refrigerant passage 41 is formed in the plate-like body 32a.
  • the refrigerant passage 41 includes the first to eighth heat transfer tubes 21 arranged in the main heat exchange unit 11 and the second and third heat transfer tubes 21 arranged in the sub heat exchange unit 12.
  • the heat pipe 23 is connected.
  • One end side of the refrigerant passage 41 communicates with the eight outflow / inflow holes 51 from the bottom among the 16 outflow / inflow holes 51, and the eight first outflow holes 51 through the eight outflow / inflow holes 51. Each is connected to the first heat transfer tube 21 up to the stage.
  • the other end side of the refrigerant passage 41 communicates with the two outflow / inflow holes 53 from the top among the four outflow / inflow holes 53, and through the two outflow / inflow holes 53, the corresponding third stage and Each is connected to the second heat transfer tube 23 in the fourth stage.
  • the refrigerant passage 41 has a function of merging refrigerant flowing from the plurality of second heat transfer tubes 23 and branching the merged refrigerant toward the plurality of first heat transfer tubes 21. Conversely, the refrigerant passage 41 has a function of joining the refrigerant flowing from the plurality of first heat transfer tubes 21 and branching the merged refrigerant toward the plurality of second heat transfer tubes 23.
  • the plate-like body 32 a is formed with through holes 57 communicating with the eight outflow / inflow holes 51 from the top among the 16 outflow / inflow holes 51.
  • the plate-like body 32 a is formed with through holes 57 that communicate with the two outflow / inflow holes 53 from the bottom out of the four outflow / inflow holes 53.
  • the plate-like body 33b is laminated on the plate-like body 32a so that the refrigerant passage 41 covers the refrigerant passage 41 from the side opposite to the side where the refrigerant passage 41 communicates with the inflow / outflow holes 51, 53 with respect to the plate-like body 32a. Yes.
  • the plate-like body 33b is formed with ten through-holes 57 communicating with each of the ten through-holes 57 formed in the plate-like body 32a.
  • a refrigerant passage 42 is formed in the plate-like body 32b.
  • the refrigerant passage 42 includes the 9th to 16th first heat transfer tubes 21 arranged in the main heat exchanging portion 11 and the first and second second heat transfer tubes arranged in the sub heat exchanging portion 12.
  • the heat pipe 23 is connected.
  • One end side of the refrigerant passage 42 communicates with the eight through-holes 57 formed on the plate-like bodies 32a and 33b and the eight flow-in / out holes 51 formed on the plate-like body 31 from above. Via the through hole 57 and the outflow / inflow hole 51, the corresponding 9th to 16th first heat transfer tubes 21 are respectively connected.
  • the other end side of the refrigerant passage 42 communicates with two through-holes 57 formed in the plate-like bodies 32a and 33b from the bottom and two flow-in / out holes 53 formed in the plate-like body 31 from the bottom.
  • the through holes 57 and the outflow / inflow holes 53 are respectively connected to the corresponding first-stage and second-stage second heat transfer tubes 23.
  • the refrigerant passage 42 has a function of merging refrigerant flowing from the plurality of second heat transfer tubes 23 and branching the merged refrigerant toward the plurality of first heat transfer tubes 21. Conversely, the refrigerant passage 42 has a function of joining refrigerants flowing from the plurality of first heat transfer tubes 21 and branching the merged refrigerant toward the plurality of second heat transfer tubes 23.
  • the plate-like body 33a is a plate with respect to the plate-like body 32b so that the refrigerant passage 42 covers the refrigerant passage 42 from the side opposite to the side where the refrigerant passage 42 communicates with the through hole 57 and the inflow / outflow holes 51, 53. It is laminated on the shaped body 32b.
  • the plate-like body 33b is a lid with respect to the plate-like body 32a so that the refrigerant passage 41 covers the refrigerant passage 41 from the side opposite to the side where the refrigerant passage 41 communicates with the inflow / outflow holes 51, 53. Are stacked.
  • the refrigerant flow when the outdoor heat exchanger 9 functions as an evaporator (heating operation) will be described.
  • the refrigerant in the two-phase state sent from the expansion valve 7 flows through the four second heat transfer tubes 23 arranged in the sub heat exchange unit 12.
  • the refrigerant that has flowed through each of the third and fourth second heat transfer tubes 23 arranged in the auxiliary heat exchanging section 12 passes through the inlet / outlet holes 53 and passes through the refrigerant passage 41. Flow into and merge.
  • the merged refrigerant branches while flowing upward in the refrigerant passage 41, and is arranged in the main heat exchange section 11 through each of the eight inflow / outflow holes 51 from the bottom to the corresponding first to eighth stages. It flows through the first heat transfer tubes 21 up to the stage.
  • the refrigerant that has flowed through each of the first-stage and second-stage second heat transfer tubes 23 arranged in the auxiliary heat exchange unit 12 flows into and merges with the refrigerant passage 42 via the inflow / outflow holes 53 and the through holes 57.
  • the merged refrigerant branches while flowing upward in the refrigerant passage 42, and is disposed in the main heat exchange section 11 through the eight through holes 57 and the eight inflow / outflow holes 51, and corresponding nine stages. It flows through the first heat transfer tubes 21 from the first to the 16th stage.
  • the refrigerant that has flowed through the main heat exchange unit 11 joins and is then sent to the compressor 3 (four-way valve 15).
  • the flow path portion 30 including the refrigerant passages 41 and 42 is formed from the plate-like bodies 31, 32a, 33b, 32b, and 33a. Further, the refrigerant passages 41 and 42 have a function of joining the refrigerant and a function of branching.
  • the distributors 17 and 18 become unnecessary, and it can further aim at the reduction of production cost.
  • the distributors 17 and 18 become unnecessary, it can contribute further to downsizing of the outdoor heat exchanger 9 as a unit.
  • the work of assembling the distributors 17 and 18 is not necessary, and the manufacturing period of the outdoor heat exchanger 9 can be further shortened.
  • Embodiment 3 As another example of the outdoor heat exchanger in which the flow path portion having a distribution function is attached, an outdoor heat exchanger in which the first heat transfer tube and the second heat transfer tube are directly connected to the flow path portion is used. explain.
  • the flow path section 30 includes one end side of the 16 first heat transfer tubes 21 arranged in the main heat exchange section 11 and four second transfer pipes arranged in the sub heat exchange section 12. One end of the heat tube 23 is connected. One end side of the first heat transfer tube 21 and the flow path portion 30 are directly connected. One end side of the second heat transfer tube 23 and the flow path portion 30 are directly connected. Since other connection relationships are the same as those shown in FIG. 10, the description thereof will not be repeated unless necessary.
  • the flow path portion 30 is formed of five plate-like bodies including a plate-like body 31, a plate-like body 32a, a plate-like body 33b, a plate-like body 32b, and a plate-like body 33a.
  • the plate-like body 31, the plate-like body 32a, the plate-like body 33b, the plate-like body 32b and the plate-like body 33a are laminated and bonded to each other by brazing.
  • Each of the 16 outflow / inflow holes 51 and the four outflow / inflow holes 53 formed in the plate-like body 31 corresponds to the cross-sectional shape of the flat first heat transfer tube 21 and the second heat transfer tube 23.
  • the refrigerant that has flowed through each of the second and second heat transfer tubes 23 arranged in the auxiliary heat exchange unit 12 directly flows into the inflow / outflow holes 53, It flows into the refrigerant passage 41 through the hole 53 and merges.
  • the merged refrigerant branches while flowing upward through the refrigerant passage 41, and passes through the eight inflow / outflow holes 51 from the bottom to the corresponding first to eighth stages arranged in the main heat exchange section 11. Directly into the first heat transfer tubes 21.
  • the refrigerant that has flowed through each of the first and second second heat transfer tubes 23 arranged in the auxiliary heat exchanging section 12 flows directly into the outflow / inflow holes 53 and passes through the outflow / inflow holes 53 and the through holes 57. It flows into the refrigerant passage 42 and merges.
  • the merged refrigerant is branched while flowing upward in the refrigerant passage 42, passes through the eight through-holes 57 and the eight inflow / outflow holes 51, and is disposed in the main heat exchanging portion 11. To the first heat transfer tube 21 up to the 16th stage respectively.
  • the plate-like body 31 is directly attached to each of the first heat transfer tube 21 and the second heat transfer tube 23.
  • the joint 59 becomes unnecessary, and the production cost can be further reduced accordingly.
  • the joint becomes unnecessary, it can further contribute to downsizing of the outdoor heat exchanger 9 as a unit.
  • the work of assembling the joint becomes unnecessary, and the manufacturing period of the outdoor heat exchanger 9 can be further shortened.
  • Embodiment 4 FIG.
  • a first example of an outdoor heat exchanger in which each of the main heat exchange unit and the sub heat exchange unit is arranged in a plurality of rows will be described.
  • the main heat exchange part 11a and the sub heat exchange part 12a are arrange
  • the main heat exchanging part 11b and the sub heat exchanging part 12b are arranged.
  • the main heat exchange unit 11a and the sub heat exchange unit 12a are arranged on the windward side.
  • the main heat exchange unit 11b and the sub heat exchange unit 12b are arranged on the leeward side.
  • the main heat exchange unit 11a and the sub heat exchange unit 12a, and the main heat exchange unit 11b and the sub heat exchange unit 12b are arranged side by side.
  • the main heat exchange unit 11a and the sub heat exchange unit 12a, and the main heat exchange unit 11b and the sub heat exchange unit 12b are separated from each other. It is shown in
  • first heat transfer tubes 21a are arranged as the first heat transfer tube first portion.
  • auxiliary heat exchange unit 12a four second heat transfer tubes 23a are disposed as the second heat transfer tube first part.
  • Sixteen first heat transfer tubes 21b are arranged in the main heat exchanging portion 11b as the second heat transfer tube second portion.
  • second heat transfer tube second part four second heat transfer tubes 23b are arranged in the auxiliary heat exchange unit 12b.
  • the flow path part 30 is arrange
  • the hairpin tube 61 connects the second heat transfer tube 23a (23b) at the first stage and the second heat transfer tube 23a (23b) at the second stage, The other end sides of the second heat transfer tubes 23a (23b) that are vertically adjacent to each other are connected.
  • the flow path part 30 is arrange
  • a specific second heat transfer tube 23b is connected.
  • the first heat transfer tubes 21 a of the first, third, fifth, and seventh steps and the second heat transfer tubes 23 b of the third step are connected by the refrigerant passage 41.
  • the 9th, 11th, 13th and 15th first heat transfer tubes 21a and the first second heat transfer tube 23b are connected by a refrigerant passage 42.
  • the first heat transfer tube 21a and the first heat transfer tube of the same even number such as the first heat transfer tube 21a of the second step and the first heat transfer tube 21b of the second step.
  • 21b is connected by a refrigerant passage 43 as a third passage.
  • the second heat transfer tube 23a and the second heat transfer tube of the same even number such as the second heat transfer tube 23a of the second step and the second heat transfer tube 23b of the second step.
  • 23 b is connected to the refrigerant passage 43.
  • the flow path section 30 includes seven plates 31, a plate 32c, a plate 33c, a plate 32a, a plate 33b, a plate 32b, and a plate 33a. It is formed from the plate-shaped body.
  • the plate-like body 31, the plate-like body 32c, the plate-like body 33c, the plate-like body 32a, the plate-like body 33b, the plate-like body 32b and the plate-like body 33a are laminated and bonded to each other by brazing.
  • the plate-like body 31 is formed with 16 outflow / inflow holes 51a, 4 outflow / inflow holes 53a, 16 outflow / inflow holes 51b, and 4 outflow / inflow holes 53b.
  • Each of the outflow / inflow holes 51a is directly connected to the corresponding first heat transfer tube 21a.
  • Each of the outflow / inflow holes 53a is directly connected to the corresponding second heat transfer tube 23a.
  • Each of the inflow / outflow holes 51b is directly connected to the corresponding first heat transfer tube 21b.
  • Each of the outflow / inflow holes 53b is directly connected to the corresponding second heat transfer tube 23b.
  • a refrigerant passage 43 is formed in the plate-like body 32c.
  • the refrigerant passage 43 connects between the first heat transfer tube 21a and the first heat transfer tube 21b of the same even number.
  • the refrigerant passage 43 connects between the second heat transfer tube 23a and the second heat transfer tube 23b of the same even number.
  • the refrigerant passage 43 communicates with the outflow / inflow holes 51a (fifth outflow / inflow holes) and the outflow / inflow holes 51b (sixth outflow / inflow holes) of the same even number from the bottom. Further, the refrigerant passage 43 communicates with the outflow / inflow hole 53a and the outflow / inflow hole 53b of the same even number from the bottom.
  • the plate-like body 32c has through holes 57 communicating with odd-numbered outflow / inflow holes 51a (51b) from the bottom and through holes communicating with odd-numbered outflow / inflow holes 53a (53b) from the bottom, respectively. 57 is formed.
  • the plate-like body 33c is formed on the plate-like body 32c so as to cover the refrigerant passage 43 from the side opposite to the side where the refrigerant passage 43 communicates with the inflow / outflow holes 51a, 51b, 53a, 53b. Are stacked. Further, the plate-like body 33c is formed with through-holes 57 communicating with the respective through-holes 57 formed in the plate-like body 32c.
  • a refrigerant passage 41 is formed in the plate-like body 32a.
  • the refrigerant passage 41 connects between the first heat transfer tubes 21a of the first, third, fifth, and seventh steps and the second heat transfer tubes 23b of the third step.
  • One end side of the refrigerant passage 41 communicates with a through hole 57 formed in each of the plate-like bodies 33c and 32c and the first, third, fifth, and seventh inflow / outflow holes 51a from below,
  • the through holes 57 and the outflow / inflow holes 51a are connected to the corresponding first heat transfer tubes 21a, respectively.
  • the other end of the refrigerant passage 41 communicates with a through-hole 57 formed in each of the plate-like bodies 33c and 32c and a third-stage outflow / inflow hole 53b from below, and through the through-hole 57 and the outflow / inflow hole 53b. And connected to the corresponding second heat transfer tube 23b.
  • the plate-like body 32 a is formed with a through-hole 57 communicating with the through-hole 57 other than the through-hole 57 communicating with the refrigerant passage 41 among the through-holes 57 formed in the plate-like body 33 c.
  • the plate-like body 33b is laminated on the plate-like body 32a as a lid with respect to the plate-like body 32a so that the refrigerant passage 41 covers the refrigerant passage 41 from the side opposite to the side communicating with the through hole 57. . Further, the plate-like body 33b is formed with a through-hole 57 that communicates with each of the through-holes 57 formed in the plate-like body 32a.
  • a refrigerant passage 42 is formed in the plate-like body 32b.
  • the refrigerant passage 42 connects between the first heat transfer tubes 21a of the ninth, eleventh, thirteenth, and fifteenth steps and the second heat transfer tubes 23b of the first step.
  • One end side of the refrigerant passage 42 has a through hole 57 formed in each of the plate-like bodies 33b, 32a, 33c, and 32c, and an outflow / inflow hole 51a in the ninth, eleventh, thirteenth, and fifteenth stages from the bottom. To the corresponding first heat transfer tubes 21a through the through holes 57 and the outflow / inflow holes 51a.
  • the other end side of the refrigerant passage 42 communicates with a through hole 57 formed in each of the plate-like bodies 33b, 32a, 33c, and 32c and a first-stage outflow / inflow hole 53b from the bottom. It is connected to the corresponding 2nd heat exchanger tube 23b via the hole 53b.
  • the plate-like body 32 b is formed with a through-hole 57 communicating with the through-hole 57 other than the through-hole 57 communicating with the refrigerant passage 42 among the through-holes 57 formed in the plate-like body 33 b.
  • the plate-like body 33a is laminated on the plate-like body 32b as a lid with respect to the plate-like body 32b so that the refrigerant passage 42 covers the refrigerant passage 42 from the side opposite to the side communicating with the through hole 57. . Further, the plate-like body 33a is formed with through-holes 57 communicating with the respective through-holes 57 formed in the plate-like body 32b. The refrigerant flows into the outdoor heat exchanger 9 or the refrigerant flows out of the outdoor heat exchanger 9 through the through holes 57 formed in the plate-like body 33a.
  • the refrigerant flowing into the outdoor heat exchanger 9 is branched into two flow paths by the distributor 19b.
  • the refrigerant flowing in the lower channel flows through the through-hole 57, the outflow / inflow hole 53a, the first-stage second heat transfer tube 23a, the hairpin tube 61, the second-stage second heat transfer tube 23a, and the outflow. It flows into the refrigerant passage 43 through the inlet hole 53a.
  • the refrigerant flowing through the refrigerant passage 42 is branched into four flow paths.
  • the refrigerant flows through the through-hole 57, the outflow / inflow hole 51a, the ninth stage first heat transfer pipe 21a, the hairpin pipe 61, the tenth stage first heat transfer pipe 21a, and the outflow.
  • the refrigerant flows into the refrigerant passage 43 through the inlet hole 51a.
  • the refrigerant flowing through the refrigerant passage 43 is distributed through the outflow / inflow hole 51b, the 10th stage first heat transfer pipe 21b, the hairpin pipe 61, the 9th stage first heat transfer pipe 21b, the outflow / inflow hole 51b, and the through hole 57. Flows into the container 19a.
  • the other three flow paths also flow into the distributor 19a through the corresponding first heat transfer tubes 21a, refrigerant passages 43, first heat transfer tubes 21b, and the like.
  • the refrigerant flowing in the upper flow path is the through hole 57, the inflow / outflow hole 53a, the third stage second heat transfer pipe 23a, the hairpin pipe 61, the fourth stage. It flows into the refrigerant passage 43 through the second heat transfer tube 23a and the outflow / inflow hole 53a.
  • the refrigerant flowing through the refrigerant passage 43 passes through the outflow / inflow hole 53b, the fourth stage second heat transfer pipe 23b, the hairpin pipe 61, the third stage second heat transfer pipe 23b, the outflow / inflow hole 53b, and the through hole 57, It flows into the refrigerant passage 41.
  • the refrigerant flowing through the refrigerant passage 41 is branched into four flow paths.
  • the refrigerant flows through the through-hole 57, the outflow / inflow hole 51a, the first heat transfer tube 21a, the hairpin tube 61, the first heat transfer tube 21a of the first step, and the outflow.
  • the refrigerant flows into the refrigerant passage 43 through the inlet hole 51a.
  • the refrigerant flowing through the refrigerant passage 43 is distributed through the outflow / inflow holes 51b, the second-stage first heat transfer pipe 21b, the hairpin pipe 61, the first-stage first heat transfer pipe 21b, the outflow / inflow holes 51b, and the through holes 57.
  • the flow path portion 30 including the refrigerant passage 43 is formed by a plate-like body 32c and the like. Thereby, the production cost can be further reduced. This will be described in comparison with an outdoor heat exchanger according to a comparative example.
  • a sub heat exchange part is shown in order to briefly explain the difference in structure.
  • the second heat transfer pipe 23 a of the second stage of the sub heat exchange unit 12 a and the second heat transfer pipe 23 b of the second stage of the sub heat exchange part 12 b are connected by a U vent pipe 143.
  • the fourth stage second heat transfer pipe 23a of the sub heat exchange section 12a and the fourth stage second heat transfer pipe 23b of the sub heat exchange section 12b are connected by a U vent pipe 143.
  • the U vent pipe is connected to the first heat transfer pipe and the first heat transfer pipe corresponding to each other.
  • the second heat transfer tube 23a and the second heat transfer tube 23b corresponding to each other are connected by the refrigerant passage 43 formed in the flow path portion 30.
  • the first heat transfer tubes 21 a and the first heat transfer tubes 21 b corresponding to each other are connected by the refrigerant passage 43.
  • Embodiment 5 FIG. Here, a second example of an outdoor heat exchanger in which each of the main heat exchange unit and the sub heat exchange unit is arranged in a plurality of rows will be described.
  • the flow path part 30 is arrange
  • a specific second heat transfer tube 23b is connected.
  • the flow path unit 30 includes refrigerant passages 41, 42, 43 and refrigerant passages 45, 46.
  • the second heat transfer tubes 23 a of the first stage and the third stage are connected to the refrigerant passage 45.
  • the first heat transfer tubes 21 b of the first, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteenth stages are connected to the refrigerant passage 46.
  • the flow path section 30 includes seven plates 31, a plate 32 c, a plate 33 c, a plate 32 a, a plate 33 d, a plate 32 b, and a plate 33 a. It is formed from the plate-shaped body.
  • the plate-like body 31, the plate-like body 32c, the plate-like body 33c, the plate-like body 32a, the plate-like body 33d, the plate-like body 32b, and the plate-like body 33a are laminated and bonded to each other by brazing.
  • a refrigerant passage 45 as a sixth passage and a refrigerant passage 46 as a fifth passage are formed in the plate-like body 33d.
  • the refrigerant passage 45 is connected to the second heat transfer tubes 23a of the first stage and the third stage.
  • the refrigerant passage 46 is connected to the first heat transfer tubes 21b of the first, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteenth stages.
  • the refrigerant passage 45 communicates with each of the first and third stage outflow / inflow holes 53a (tenth outflow / inflow holes) from the bottom.
  • the refrigerant passage 46 has first and third, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteenth inflow / outflow holes 51b (9th outflow / inflow) from the bottom. To the hole).
  • the plate-like body 33 a is formed with a through hole 57 (second through hole) communicating with the refrigerant passage 45 and a through hole (first through hole) communicating with the refrigerant passage 46.
  • the refrigerant that has flowed to the outdoor heat exchanger 9 flows into the refrigerant passage 45 through the through holes 57 formed in the plate-like bodies 33 a and 32 b of the flow path portion 30.
  • the refrigerant that has flowed into the refrigerant passage 45 is branched into two flow paths. Of the two branched flow paths, the refrigerant flowing in the lower flow path flows into the refrigerant path 42 through the corresponding second heat transfer pipe 23a, the refrigerant path 43, the second heat transfer pipe 23b, and the like.
  • the refrigerant that has flowed through the refrigerant passage 42 is branched into four flow paths. Each of the four flow paths flows into the refrigerant passage 46 through the corresponding first heat transfer tube 21a, the refrigerant passage 43, the first heat transfer tube 21b, and the like.
  • the refrigerant flowing in the upper flow path flows into the refrigerant path 41 through the corresponding second heat transfer pipe 23a, the refrigerant path 43, the second heat transfer pipe 23b, and the like.
  • the refrigerant that has flowed through the refrigerant passage 41 is branched into four flow paths.
  • Each of the four flow paths flows into the refrigerant passage 46 through the corresponding first heat transfer tube 21a, the refrigerant passage 43, the first heat transfer tube 21b, and the like.
  • the respective refrigerants flowing into the refrigerant passage 46 merge and pass through the through holes 57 formed in the plate-like bodies 32b and 33a, and then are sent to the compressor 3 (four-way valve 15).
  • the refrigerant passages 45 and 46 in the flow path section 30 have a function of distributing the refrigerant or a function of joining the refrigerant.
  • the distributors 19a and 19b become unnecessary, and the production cost can be further reduced.
  • the distributors 19a and 19b are unnecessary, it is possible to further contribute to the downsizing of the outdoor heat exchanger 9 as a unit.
  • the work of assembling the distributors 19a and 19b is not necessary, and the manufacturing period of the outdoor heat exchanger 9 can be further shortened.
  • Embodiment 6 FIG.
  • a third example of an outdoor heat exchanger in which each of the main heat exchange unit and the sub heat exchange unit is arranged in a plurality of rows will be described.
  • the 16 1st heat exchanger tubes 21a (21b) are arrange
  • Four second heat transfer tubes 23a (23b) are arranged in the auxiliary heat exchange unit 12a (12b).
  • the flow path part 30 is arrange
  • the first heat transfer tubes 21a adjacent to each other in the upper and lower directions are connected in such a manner that the second heat transfer tubes 21a (21b) and the third heat transfer tubes 21a (21b) are connected.
  • One end sides of (21b) are connected to each other.
  • the flow path part 30 is arrange
  • a specific second heat transfer tube 23b is connected.
  • Each of the first and fifth first heat transfer tubes 21 a and the third heat transfer tube 23 b are connected by a refrigerant passage 41.
  • Each of the 9th and 13th first heat transfer tubes 21 a is connected to the first heat transfer tube 23 b by a refrigerant passage 42.
  • the first heat transfer tubes 21a at the fourth, eighth, twelfth and sixteenth stages and the first transmission at the fourth, eighth, twelfth and sixteenth stages are provided.
  • the same even-numbered first heat transfer tubes 21 a and first heat transfer tubes 21 b are connected to the heat tubes 21 b by a refrigerant passage 43.
  • the second heat transfer tube 23a of the same even number is compared with the second heat transfer tube 23a of the second and fourth steps and the second heat transfer tube 23b of the second and fourth steps.
  • the second heat transfer tube 23 b are connected by a refrigerant passage 43.
  • each one end side of the 1st heat exchanger tube 21a (21b) adjacent to a specific upper and lower side is connected by the refrigerant path 44 as a 4th channel
  • the second stage first heat transfer tube 21 a (21 b) and the third stage first heat transfer tube 21 a (21 b) are connected by a refrigerant passage 44.
  • the sixth heat transfer tube 21 a (21 b) and the seventh heat transfer tube 21 a (21 b) are connected by a refrigerant passage 44.
  • the tenth stage first heat transfer tube 21 a (21 b) and the eleventh stage first heat transfer tube 21 a (21 b) are connected by a refrigerant passage 44.
  • the 14th stage first heat transfer tube 21a (21b) and the 15th stage first heat transfer tube 21a (21b) are connected by a refrigerant passage 44.
  • the flow path section 30 includes seven plates 31, a plate 32c, a plate 33c, a plate 32a, a plate 33b, a plate 32b, and a plate 33a. It is formed from the plate-shaped body.
  • the plate-like body 31, the plate-like body 32c, the plate-like body 33c, the plate-like body 32a, the plate-like body 33b, the plate-like body 32b and the plate-like body 33a are laminated and bonded to each other by brazing.
  • the plate-like body 31 is formed with 16 outflow / inflow holes 51a, 4 outflow / inflow holes 53a, 16 outflow / inflow holes 51b, and 4 outflow / inflow holes 53b.
  • Each of the inflow / outflow holes 51a is connected to the corresponding first heat transfer tube 21a.
  • Each of the outflow / inflow holes 53a is connected to the corresponding second heat transfer tube 23a.
  • Each of the inflow / outflow holes 51b is connected to the corresponding first heat transfer tube 21b.
  • Each of the outflow / inflow holes 53b is connected to the corresponding second heat transfer tube 23b.
  • a refrigerant passage 43 is formed in the plate-like body 32c.
  • the refrigerant passage 43 includes a first heat transfer tube 21a at the fourth, eighth, twelfth, and sixteenth steps, and a first heat transfer tube 21b at the fourth, eighth, twelfth, and sixteenth steps.
  • the first heat transfer tube 21a and the first heat transfer tube 21b of the same even number are respectively connected.
  • the refrigerant passage 43 has the same even-numbered second heat transfer tubes 23a with respect to the second heat transfer tubes 23a of the second and fourth steps and the second heat transfer tubes 23b of the second and fourth steps.
  • the second heat transfer tube 23b is connected to each other.
  • Each of the refrigerant passages 43 communicates with an inflow / outflow hole 51a to which the corresponding first heat transfer tube 21a is connected and an outflow / inflow hole 51b to which the corresponding first heat transfer tube 21b is connected.
  • a refrigerant passage 44 is formed in the plate-like body 32c.
  • the refrigerant passage 44 connects the second stage first heat transfer tube 21a (21b) and the third stage first heat transfer tube 21a (21b).
  • the refrigerant passage 44 connects between the sixth heat transfer tube 21a (21b) and the seventh heat transfer tube 21a (21b).
  • the refrigerant passage 44 connects the first heat transfer tube 21a (21b) at the 10th stage and the first heat transfer tube 21a (21b) at the 11th stage.
  • the refrigerant passage 44 connects the 14th stage first heat transfer tube 21a (21b) and the 15th stage first heat transfer tube 21a (21b).
  • Each of the refrigerant passages 44 is connected to an outflow / inflow hole 51a (51b) (seventh outflow / inflow hole) to which the corresponding first heat transfer tube 21a (21b) is connected, and a corresponding first heat transfer tube 21a (21b). And the inflow / outflow hole 51a (51b) (eighth outflow / inflow hole).
  • the plate-like body 33c is arranged so that the refrigerant passages 43, 44 cover the refrigerant passages 43, 44 from the side opposite to the side communicating with the inflow / outflow holes 51a, 51b, 53a, 53b with respect to the plate-like body 32c. It is laminated on the cylindrical body 32c. Further, the plate-like body 33c is formed with through-holes 57 communicating with the respective through-holes 57 formed in the plate-like body 32c.
  • a refrigerant passage 41 is formed in the plate-like body 32a.
  • the refrigerant passage 41 connects between the first heat transfer tubes 21a of the first and fifth stages and the second heat transfer tubes 23b of the third stage.
  • One end side of the refrigerant passage 41 communicates with the through hole 57 formed in each of the plate-like bodies 33c and 32c and the first and fifth inflow / outflow holes 51a from below, and the through hole 57 and the outflow / inflow hole It is connected to the corresponding first heat transfer tube 21a via 51a.
  • the other end of the refrigerant passage 41 communicates with a through-hole 57 formed in each of the plate-like bodies 33c and 32c and a third-stage outflow / inflow hole 51b from below, and through the through-hole 57 and the outflow / inflow hole 51b. And connected to the corresponding second heat transfer tube 23b.
  • the plate-like body 32 a is formed with a through-hole 57 communicating with the through-hole 57 other than the through-hole 57 communicating with the refrigerant passage 41 among the through-holes 57 formed in the plate-like body 33 c.
  • the plate-like body 33b is laminated on the plate-like body 32a as a lid with respect to the plate-like body 32a so that the refrigerant passage 41 covers the refrigerant passage 41 from the side opposite to the side communicating with the through hole 57. . Further, the plate-like body 33b is formed with a through-hole 57 that communicates with each of the through-holes 57 formed in the plate-like body 32a.
  • a refrigerant passage 42 is formed in the plate-like body 32b.
  • the refrigerant passage 42 connects between the first heat transfer tube 21a of each of the ninth and thirteenth steps and the second heat transfer tube 23b of the first step.
  • One end side of the refrigerant passage 42 communicates with a through-hole 57 formed in each of the plate-like bodies 33b, 32a, 33c, and 32c and the ninth and thirteenth-stage outflow / inflow holes 51a from the bottom. And the corresponding first heat transfer tube 21a via the inflow / outflow hole 51a.
  • the other end side of the refrigerant passage 42 communicates with a through hole 57 formed in each of the plate-like bodies 33b, 32a, 33c, and 32c and a first-stage outflow / inflow hole 53b from the bottom. It is connected to the corresponding 2nd heat exchanger tube 23b via the hole 53b.
  • the plate-like body 32 b is formed with a through-hole 57 communicating with the through-hole 57 other than the through-hole 57 communicating with the refrigerant passage 42 among the through-holes 57 formed in the plate-like body 33 b.
  • the plate-like body 33a is laminated on the plate-like body 32b as a lid with respect to the plate-like body 32b so that the refrigerant passage 42 covers the refrigerant passage 42 from the side opposite to the side communicating with the through hole 57. . Further, the plate-like body 33a is formed with through-holes 57 communicating with the respective through-holes 57 formed in the plate-like body 32b.
  • the refrigerant flowing into the outdoor heat exchanger 9 is branched into two flow paths by the distributor 19b.
  • the refrigerant flowing in the lower channel flows through the through-hole 57, the outflow / inflow hole 53a, the first-stage second heat transfer tube 23a, the hairpin tube 61, the second-stage second heat transfer tube 23a, and the outflow. It flows into the refrigerant passage 43 through the inlet hole 53a.
  • the refrigerant that has flowed through the refrigerant passage 43 passes through the outflow / inflow hole 53b, the second-stage second heat transfer pipe 23b, the hairpin pipe 61, the first-stage second heat transfer pipe 23b, the outflow / inflow hole 53b, and the through-hole 57. It flows into 42.
  • the refrigerant that has flowed through the refrigerant passage 42 is branched into two flow paths.
  • the refrigerant passes through the through hole 57, the outflow / inflow hole 51a, the 9th stage first heat transfer pipe 21a, the hairpin pipe 61, the 10th stage first heat transfer pipe 21a and the outflow / inflow hole 51a. Then, it flows into the refrigerant passage 44.
  • the refrigerant that has flowed upward through the refrigerant passage 44 passes through the outflow / inflow hole 51a, the eleventh-stage first heat transfer pipe 21a, the hairpin pipe 61, the twelfth-stage first heat transfer pipe 21a, and the outflow / inflow hole 51a.
  • the refrigerant flowing through the refrigerant passage 43 passes through the outflow / inflow hole 51b, the 12th stage first heat transfer pipe 21b, the hairpin pipe 61, the 11th stage first heat transfer pipe 21b and the outflow / inflow hole 51b, and enters the refrigerant path 44. Flows in.
  • the refrigerant flowing downward through the refrigerant passage 44 flows into the outflow / inflow hole 51b, the 10th stage first heat transfer pipe 21b, the hairpin pipe 61, the 9th stage first heat transfer pipe 21b, the outflow / inflow hole 51b, and the through hole 57. And then flows into the distributor 19a.
  • the refrigerant that has flowed through the refrigerant passage 41 is branched into two flow paths.
  • the refrigerant passes through the through hole 57, the outflow / inflow hole 51a, the first heat transfer tube 21a, the hairpin tube 61, the first heat transfer tube 21a in the second step and the outflow / inflow hole 51a. Then, it flows into the refrigerant passage 44.
  • the refrigerant that has flowed upward through the refrigerant passage 44 passes through the outflow / inflow hole 51a, the third-stage first heat transfer pipe 21a, the hairpin pipe 61, the fourth-stage first heat transfer pipe 21a, and the outflow / inflow hole 51a. It flows into 43.
  • the refrigerant flowing through the refrigerant passage 43 passes through the outflow / inflow hole 51b, the fourth stage first heat transfer pipe 21b, the hairpin pipe 61, the third stage first heat transfer pipe 21b and the outflow / inflow hole 51b, and enters the refrigerant path 44. Flows in.
  • the refrigerant that has flowed downward through the refrigerant passage 44 flows into the outflow / inflow hole 51b, the second stage first heat transfer pipe 21b, the hairpin pipe 61, the first stage first heat transfer pipe 21b, the outflow / inflow hole 51b, and the through hole 57. And then flows into the distributor 19a.
  • a plate-like body having a function of distributing the refrigerant or a function of merging the refrigerant may be laminated on the flow path portion 30 of the outdoor heat exchanger 9 described above.
  • a plate-like body similar to the plate-like body 33d in which the refrigerant passages 45 and 46 are formed as shown in FIG. 22 may be laminated.
  • the flow path portion 30 that connects the main heat exchange portion 11 and the sub heat exchange portion 12 by the two refrigerant passages 41 and the refrigerant passage 42 is taken as an example.
  • the present invention can also be applied to a flow path portion provided with three or more refrigerant passages.
  • the outdoor heat exchanger 9 arranged in one row and two rows was taken as an example as the main heat exchanging portion 11 and the sub heat exchanging portion 12, the outdoor heat exchanger arranged in three or more rows is also exemplified.
  • a flow path part can be applied.
  • the present invention is effectively used in a heat exchanger provided with a main heat exchange section and a sub heat exchange section.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

Selon la présente invention, un échangeur de chaleur extérieur (9) comprend : un échangeur de chaleur primaire (11) équipé d'un premier tuyau de transfert de chaleur (21) ; et un échangeur de chaleur secondaire (12) équipé d'un second tuyau de transfert de chaleur (23). Une partie de passage d'écoulement (30) dans laquelle un réfrigérant s'écoule est disposée entre un côté d'extrémité du premier tuyau de transfert de chaleur (21) et un côté d'extrémité du second tuyau de transfert de chaleur (23). La partie de passage d'écoulement (30) est formée par un corps en forme de plaque (31), un corps en forme de plaque (32) et un corps en forme de plaque (33). Le corps en forme de plaque (31) comprend des trous d'entrée/de sortie (51, 53) formés en son sein. Le corps en forme de plaque (32) comprend des passages de réfrigérant (41, 42) formés en son sein. Les côtés d'extrémité inférieure des passages de réfrigérant (41, 42) communiquent avec les trous d'entrée/de sortie (53) et les côtés d'extrémité supérieure communiquent avec les trous d'entrée/de sortie (51). Le corps en forme de plaque (33) est empilé sur le corps en forme de plaque (32) de manière à recouvrir les passages de réfrigérant (41, 42) à partir du côté opposé, par rapport au corps en forme de plaque (32), du côté sur lequel les passages de réfrigérant (41, 42) communiquent avec les trous d'entrée/de sortie (51, 53).
PCT/JP2017/013521 2017-03-31 2017-03-31 Échangeur de chaleur et dispositif à cycle de réfrigération doté de ce dernier WO2018179311A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2017/013521 WO2018179311A1 (fr) 2017-03-31 2017-03-31 Échangeur de chaleur et dispositif à cycle de réfrigération doté de ce dernier
CN201780087117.XA CN110476036B (zh) 2017-03-31 2017-03-31 热交换器及具备该热交换器的制冷循环装置
JP2019508086A JP6716016B2 (ja) 2017-03-31 2017-03-31 熱交換器およびそれを備えた冷凍サイクル装置

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PCT/JP2017/013521 WO2018179311A1 (fr) 2017-03-31 2017-03-31 Échangeur de chaleur et dispositif à cycle de réfrigération doté de ce dernier

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CN114127488A (zh) * 2019-06-28 2022-03-01 大金工业株式会社 热交换器和热泵装置
CN114341587A (zh) * 2019-12-24 2022-04-12 东芝开利株式会社 热交换器以及冷冻循环装置

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JPH05296606A (ja) * 1992-03-31 1993-11-09 Modine Mfg Co 高効率蒸発器
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CN114127488B (zh) * 2019-06-28 2023-01-13 大金工业株式会社 热交换器和热泵装置
CN114341587A (zh) * 2019-12-24 2022-04-12 东芝开利株式会社 热交换器以及冷冻循环装置

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CN110476036B (zh) 2021-05-18
CN110476036A (zh) 2019-11-19

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