WO2015133626A1 - 熱交換器及び空気調和機 - Google Patents
熱交換器及び空気調和機 Download PDFInfo
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- WO2015133626A1 WO2015133626A1 PCT/JP2015/056724 JP2015056724W WO2015133626A1 WO 2015133626 A1 WO2015133626 A1 WO 2015133626A1 JP 2015056724 W JP2015056724 W JP 2015056724W WO 2015133626 A1 WO2015133626 A1 WO 2015133626A1
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- heat exchanger
- refrigerant
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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
- F25B39/04—Condensers
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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
- F25B39/02—Evaporators
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- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0461—Combination of different types of heat exchanger, e.g. radiator combined with tube-and-shell heat exchanger; Arrangement of conduits for heat exchange between at least two media and for heat exchange between at least one medium and the large body of fluid
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0475—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a single U-bend
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- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
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- 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
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/02—Arrangements of fins common to different heat exchange sections, the fins being in contact with different heat exchange media
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/10—Particular pattern of flow of the heat exchange media
- F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/10—Particular pattern of flow of the heat exchange media
- F28F2250/108—Particular pattern of flow of the heat exchange media with combined cross flow and parallel flow
-
- 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
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
Definitions
- the present invention relates to a heat exchanger and an air conditioner equipped with the heat exchanger.
- a fin tube heat exchanger has been proposed as one of the heat exchangers used in air conditioners and the like.
- the fin tube type heat exchanger is a heat exchanger in which tubes through which a refrigerant flows are inserted through a plurality of plate-like fins arranged at intervals. In this finned tube heat exchanger, air flows between the plate-shaped fins, and heat is exchanged between the air and the refrigerant flowing in the tube.
- Patent Document 1 As such a fin tube type heat exchanger, in Patent Document 1, a first header collecting pipe is connected to one end of a plurality of flat tubes, and a second header collecting pipe is connected to the other end of these flat tubes. A heat exchanger in which a plurality of fins are installed between the first header collecting pipe and the second header collecting pipe is disclosed.
- This Patent Document 1 is divided into an upper heat exchange region and a lower heat exchange region, and the upper heat exchange region and the lower heat exchange region are further divided in the direction of gravity.
- the heat exchanger acts as a condenser
- the refrigerant flowing upward in the upper heat exchange region flows below the lower heat exchange region, and the refrigerant flowing downward in the upper heat exchange region is the lower heat. It flows into the upper part of the exchange area.
- This prior art intends to reduce heat loss such as heat exchange between the refrigerant in the gas state and the refrigerant in the saturated liquid state, thereby improving the heat exchange efficiency.
- Patent Document 2 discloses a heat exchanger partitioned into an upper heat exchange region (main heat exchange portion) and a lower heat exchange region (auxiliary heat exchange portion), as in Patent Document 1. .
- This Patent Document 2 is intended to optimize the supercooling degree of the refrigerant and the heat transfer area of the flat tube to improve the condensing capacity and evaporating capacity in the heat exchanger.
- JP 2012-163328 A (second page) JP 2013-83419 A (2nd to 4th pages)
- the present invention has been made against the background of the above problems, and provides a heat exchanger that improves heat exchange performance and an air conditioner including the heat exchanger.
- the heat exchanger according to the present invention includes a first main fin arranged in parallel to the air blowing direction of air blown from the blower, and a first refrigerant that is inserted into the first main fin and flows into the first main fin.
- a main heat exchanging unit having a second main pipe that flows, a main pipe connecting member that connects the first main pipe and the second main pipe and extends parallel to the air blowing direction, and air blowing
- a first sub-fin arranged in parallel to the direction
- a first sub-tube inserted into the first sub-fin and through which a refrigerant flows, and arranged in parallel to the air blowing direction
- a second sub fin provided on the windward side of the first sub fin
- a second sub pipe inserted into two sub fins and through which the refrigerant flows, and a sub pipe connecting member that connects the first sub pipe and the second sub pipe and extends parallel to the air blowing direction.
- the heat exchanger When the heat exchanger includes a sub heat exchange part having the function as an evaporator, the refrigerant flowing through the main heat exchange part flows from the first main pipe toward the second main pipe, The refrigerant flowing through the sub heat exchange section flows from the second sub pipe toward the first sub pipe, and when acting as a condenser, the refrigerant flowing through the main heat exchange section is the second main pipe.
- the refrigerant flowing from the first sub pipe to the first main pipe and flowing through the sub heat exchange section flows from the first sub pipe to the second sub pipe.
- the main pipe connecting member and the sub pipe connecting member extend in a direction parallel to the air blowing direction. For this reason, in any case where the heat exchanger acts as a condenser or an evaporator, the flow direction of the refrigerant flowing through the main pipe connection member or the sub pipe connection member and the air blowing direction are counterflows. For this reason, heat exchange performance can be improved.
- FIG. 1 is a front view showing a heat exchanger 1 according to Embodiment 1.
- FIG. 1 is a side view showing a heat exchanger 1 according to Embodiment 1.
- FIG. 1 is a side cross-sectional view showing a heat exchanger 1 according to Embodiment 1.
- FIG. It is another side view which shows the heat exchanger 1 which concerns on Embodiment 1.
- FIG. 1 is a circuit diagram showing an air conditioner 2 according to Embodiment 1.
- FIG. 6 is a side view showing a heat exchanger 100 according to Embodiment 2.
- FIG. 3 is a top view showing a sub heat exchange unit 13 according to Embodiment 1.
- FIG. It is another side view which shows the sub heat exchange part 13 which concerns on Embodiment 1.
- FIG. 3 is a side cross-sectional view showing a sub heat exchange unit 13 according to Embodiment 1.
- FIG. 1 is a front view showing a heat exchanger 1 according to Embodiment 1.
- FIG. 1 is
- FIG. 1 is a front view showing a heat exchanger 1 according to Embodiment 1.
- FIG. The heat exchanger 1 will be described with reference to FIG.
- the heat exchanger 1 includes a fin portion 10, a main pipe 20, a hairpin pipe 23, a header 30, a sub pipe 40, and a connection member (sub pipe connection member) 50. .
- the fin part 10 has a plurality of plate-like fins 11 arranged at intervals in a direction (arrow X direction) perpendicular to a flow direction (air blowing direction) of a heat medium, for example, air blown from a blower. .
- the upper direction of the gravity direction (arrow Z direction) is the main heat exchange part 12 which heat-exchanges air and a refrigerant
- the auxiliary heat exchange unit 13 has an area occupied by the fins 10 that is narrower than the main heat exchange unit 12, that is, the auxiliary heat exchange unit 13 has a smaller heat exchange region than the main heat exchange unit 12.
- the fin unit 10 includes the main heat exchange unit 12 and the sub heat exchange unit 13. And in the main heat exchange part 12 and the sub heat exchange part 13, although the common plate-shaped fin 11 is used, the flow path of the heat exchanger pipe installed, ie, the main pipe 20 and the sub pipe 40, differs.
- the plate-like fins 11 are provided on the main heat exchanging part 12 side and are divided into main fins into which the main pipe 20 is inserted and sub fins provided on the sub heat exchanging part 13 side into which the sub pipe 40 is inserted. It may be.
- the main fin and the sub fin are arranged in two rows parallel to the air flow direction, the main fin provided on the leeward side is the first main fin, the main fin provided on the leeward side is the second main fin,
- the sub fin provided on the leeward side is referred to as a first sub fin, and the sub fin provided on the leeward side is referred to as a second sub fin.
- the main fin and the subfin may be arranged in two or more rows.
- the main pipe 20 circulates through the refrigerant and penetrates the plate-like fins 11 in the main heat exchanging section 12 in the arrangement direction (arrow X direction), and the plurality of first main pipes 21 inserted into the first main fins. And a plurality of second main pipes 22 inserted into the second main fin.
- a plurality of the first main pipe 21 and the second main pipe 22 are arranged at intervals in a direction parallel to the direction of gravity (arrow Z direction).
- the first main pipe 21 is arranged.
- 16 second main pipes 22 are respectively installed.
- first main fin and the first main pipe 21 are arranged on the leeward side
- second main fin and the second main pipe 22 are arranged on the leeward side with respect to the flow direction of the air blown from the blower.
- the hairpin tube 23, at the other end of the fin portion 10 (X 1 side of the arrow X), the other end of the second main pipe 22 adjacent the other end and between the first main pipe 21 adjacent to each other Are connected.
- the first main tube 21, the second main tube 22, and the hairpin tube 23 are flat tubes having a flat cross section, for example.
- FIG. 2 is a side view showing the heat exchanger 1 according to the first embodiment.
- the header 30 includes a liquid side header 31 and a gas side header 32.
- the heat exchanger 1 acts as a condenser
- the refrigerant flows from the gas side header 32 toward the liquid side header 31, and when the heat exchanger 1 acts as an evaporator, the refrigerant flows from the liquid side header 31. It circulates toward the gas side header 32.
- Liquid side header 31 has one end of a plurality of first main pipe 21, which connects the other end of the liquid pipe 60, one end of the fin portion 10 (X 2 side of the arrow X direction in FIG. 1) is set up.
- the liquid-side header 31 is used for circulating a refrigerant that is substantially saturated.
- the liquid side header 31 is partitioned at the center in the gravity direction (arrow Z direction), and includes an upper header 31 a above the liquid side header 31 and a lower header 31 b below the liquid side header 31. ing.
- the eight first main pipes 21 are connected to the upper header 31a, and the remaining eight first main pipes 21 are connected to the lower header 31b. That is, the refrigerant does not flow between the upper header 31a and the lower header 31b.
- one end of the liquid pipe 60 is connected to the auxiliary heat exchanging unit 13, and includes an upper capillary 61, a lower capillary 62, a distributor 63, and a merging pipe 64.
- the upper capillary 61 extends from the upper header 31 a
- the lower capillary 62 extends from the lower header 31 b
- the upper capillary 61 and the lower capillary 62 merge at the distributor 63.
- the junction pipe 64 connects the distributor 63 and the auxiliary heat exchange unit 13.
- the gas-side header 32 is connected to one end of the plurality of second main pipe 22 is installed at one end of the fin portion 10 (X 2 side of the arrow X direction in FIG. 1). That is, the gas side header 32 and the liquid side header 31 are disposed adjacent to each other in a direction parallel to the air flow direction (arrow Y direction).
- the gas side header 32 circulates the refrigerant that is almost in a gas state.
- FIG. 3 is a side sectional view showing the heat exchanger 1 according to the first embodiment.
- the main heat exchanging section 12 has a second main pipe 22 extending from the gas-side header 32, and the hairpin pipe 23 is above the gravitational direction on the other end side of the fin section 10 (arrow Z 1 direction).
- the U-bend pipe 24 installed in the direction parallel to the air flow direction (arrow Y direction) through the joint 44, and then again the hairpin pipe 23 and the first main pipe 21.
- the U-bend pipe 24 connects the other end of the first main pipe 21 and the other end of the second main pipe 22 on the other end side of the fin portion 10 and is parallel to the flow direction of the heat medium. It extends.
- the U-bend pipe 24 corresponds to the main pipe connecting member of the present invention, but the main pipe connecting member is not limited to the U-shaped U-bend pipe 24, and a bent rectangular pipe may be used.
- the second main pipe 22 adjacent to the second main pipe 22 extends from the gas side header 32, and on the other end side of the fin portion 10, the hairpin pipe 23 is downward (arrow Z 2 direction) with respect to the gravity direction. After bending, it is connected to a U-bend tube 24 installed in a direction parallel to the air flow direction (arrow Y direction), and then connected again to the hairpin tube 23 and the first main tube 21 to be a liquid side header. It extends to 31.
- the second main pipes 22 are adjacent to each other in the vicinity of the gas side header 32, that is, in a portion where the refrigerant is in an overheated state.
- the first main pipes 21 are adjacent to each other in the vicinity of the liquid side header 31, that is, in a portion where the refrigerant is in a saturated liquid state.
- the sub pipe 40 circulates refrigerant and penetrates the plate-like fins 11 in the sub heat exchange section 13 in the arrangement direction (arrow X direction), and a plurality of first sub pipes inserted into the first sub fins. 41 and a plurality of second sub-tubes 42 inserted into the second sub-fins. Note that the first sub fin and the first sub pipe 41 are arranged on the leeward side, and the second sub fin and the second sub pipe 42 are arranged on the upwind side with respect to the flow direction of the air blown from the blower. .
- one end of the first sub pipe 41 is connected to one end of the liquid pipe 60, and four first sub pipes 41 are arranged at intervals in a direction parallel to the gravity direction (arrow Z direction). Yes.
- the upper two are connected to one end of a branch pipe, for example, a three-way pipe 43, and the other end of the three-way pipe 43 is connected to one end of a junction pipe 64 in the liquid pipe 60.
- the lower two of the four first sub pipes 41 are also connected to one end of a branch pipe, for example, a three-way pipe 43, and a liquid pipe 60 is connected to the other end of the three-way pipe 43.
- One end of the merge pipe 64 is connected.
- junction pipe 64 connects the distributor 63 and the auxiliary heat exchange unit 13 as described above, and is branched into two paths on the auxiliary heat exchange unit 13 side.
- One end of each of the three-way pipes 43 is connected to each of the branched portions.
- One end of the first sub pipe 41 is disposed below the liquid header 31.
- the first sub pipes 41 are flat pipes having a flat cross section, for example, and the three-way pipe 43 is a circular pipe having a circular cross section. For this reason, the first sub pipe 41 and the three-way pipe 43 are joined by a joint 44 having a flat shape at one end and a circular shape at the other end.
- each of the second sub-tubes 42 serves as a refrigerant inflow / outlet port
- four second sub-tubes 42 are arranged at intervals in a direction parallel to the direction of gravity (arrow Z direction).
- the upper two are connected to one end of a branch pipe, for example, the three-way pipe 43
- the other end of the three-way pipe 43 has a liquid outflow / inflow pipe serving as a refrigerant outflow inlet.
- One end of 70 is connected.
- the lower two pipes are also connected to one end of a branch pipe, for example, a three-way pipe 43, and a liquid outflow / inflow pipe is connected to the other end of the three-way pipe 43.
- One end of 70 is connected.
- the liquid inflow / outflow pipe 70 branches into two paths on one end side of the three-way pipe 43 and then merges.
- one end of the second sub pipe 42 is disposed below the gas side header 32.
- the second sub pipes 42 are flat pipes having a flat cross section, for example, and the three-way pipe 43 is a circular pipe having a circular cross section. For this reason, the second sub pipe 42 and the three-way pipe 43 are joined by a joint 44 having a flat shape at one end and a circular shape at the other end.
- the first sub pipe 41 is arranged on the leeward side and the second sub pipe 42 is arranged on the upwind side with respect to the flow direction of the air blown from the blower. Further, the first sub pipe 41 and the second sub pipe 42 are not horizontally adjacent to the air flow direction (arrow Y direction), and are shifted in the gravity direction (arrow Z direction). .
- FIG. 4 is another side view showing the heat exchanger 1 according to the first embodiment.
- the connecting member 50 connects the other end of the first sub-tube 41 and the other end of the second sub-tube 42 on the other end side of the fin portion 10, in the direction of air flow. On the other hand, it extends in a parallel direction (arrow Y direction).
- FIG. 7 is a top view showing the auxiliary heat exchange unit 13 according to the first embodiment.
- the connection member 50 connects the first sub pipe 41 and the second sub pipe 42 in a top view.
- the first sub pipe 41 and the second sub pipe 42 are not horizontally adjacent to the air flow direction (arrow Y direction), and are displaced in the direction of gravity (arrow Z direction). ing. For this reason, the connecting member 50 is inclined by an amount corresponding to the shift in the gravity direction (arrow Z direction) between the first sub pipe 41 and the second sub pipe 42.
- FIG. 8 is another side view showing the auxiliary heat exchange unit 13 according to the first embodiment.
- a step-stretching tube like the connection member 50 is not used in the step direction that is the direction of gravity (the arrow Z direction), and air circulation is performed.
- a column straddling tube like the connection member 50 is used only in the column direction which is a direction parallel to the direction (arrow Y direction).
- the distribution directions of the refrigerant in the first sub-tubes 41 and the second sub-tubes 42 adjacent to each other in the step direction are the same.
- the heat exchanger 1 acts as a condenser.
- circulated the 2nd main pipe 22 is heat-exchanged with air in the fin part 10, and is condensed.
- the saturated liquefied refrigerant flows into the U-bend pipe 24 and flows from the second main pipe 22 to the first main pipe 21.
- the refrigerant that circulates in the eight first main pipes 21 above the gravity direction (arrow Z direction) circulates in the upper header 31a of the liquid-side header 31 and the gravity direction (arrow Z direction).
- the refrigerant flowing through the eight first main pipes 21 below ()) flows through the lower header 31b of the liquid side header 31.
- the refrigerant flowing through the upper header 31 a flows into the upper capillary 61, and the refrigerant flowing through the lower header 31 b flows into the lower capillary 62.
- These refrigerants merge at the distributor 63, pass through the merge pipe 64, branch again into two, flow into the three-way pipe 43, and circulate through the four first sub pipes 41.
- the refrigerant that has flowed into the first sub pipe 41 is heat-exchanged with air in the fin portion 10 and further condensed to be in a supercooled state, and the other end side of the fin portion 10 (in the direction of arrow X in FIG. 1).
- the connecting member 50 flows into the connecting member 50, it flows from the first auxiliary pipe 41 to the second secondary pipe 42.
- the refrigerant flowing through the connection member 50 flows in the direction of air flow when the heat exchanger 1 acts as a condenser. Thereafter, the refrigerant flows into the second sub pipe 42, exchanges heat with air in the fin portion 10, further condenses, flows into the three-way pipe 43, and the supercooled refrigerant is discharged from the liquid inflow / outflow pipe 70. Is done.
- the fin portion 10 is an air heat exchanger, evaporated, the other end of the fin portion 10 (X 1 side of the arrow X direction in FIG. 1), flows into the connecting member 50, the second auxiliary pipe It flows from 42 to the first sub pipe 41.
- the refrigerant that has flowed into the first sub pipe 41 undergoes heat exchange with air in the fin portion 10, becomes a saturated liquid state, flows into the three-way pipe 43, and reaches the merging pipe 64.
- the refrigerant in the saturated liquid state is branched into two at the distributor 63, the refrigerant flowing into the upper capillary 61 flows into the upper header 31a in the liquid side header 31, while the refrigerant flowing into the lower capillary 62 is It flows into the lower header 31b in the liquid side header 31.
- the refrigerant flowing into the upper header 31a flows through the eight first main pipes 21 above the gravity direction (arrow Z direction), and the refrigerant flowing into the lower header 31b is below the gravity direction (arrow Z direction).
- the eight first main pipes 21 are distributed. And these refrigerant
- coolants are further heat-exchanged with air in the fin part 10, and evaporate. Thereafter, the refrigerant is turned back at the hairpin tube 23 at the other end of the fin portion 10 (X 1 side of the arrow X direction in FIG. 1), again, the fin portion 10, is an air heat exchanger, and further evaporation, gas It becomes a state.
- the gasified refrigerant flows into the U-bend pipe 24 and flows from the first main pipe 21 to the second main pipe 22.
- the refrigerant in the gas state flows into the gas side header 32 and is then discharged to the outside of the heat exchanger 1.
- connection member 50 in the heat exchanger 1 extends in a direction parallel to the flow direction of the heat medium, for example, air.
- the heat exchanger 1 acts as a condenser or an evaporator
- the flow direction of the refrigerant flowing through the connection member 50 and the flow direction of the air are opposed. Therefore, the heat exchange performance of the heat exchanger 1 is improved.
- FIG. 9 is a side sectional view showing the auxiliary heat exchange unit 13 according to the first embodiment.
- the auxiliary heat exchange unit 13 in the heat exchanger 1 acts as a condenser
- the refrigerant that circulates in the connection member 50 faces the air flow direction. Circulate. For this reason, the supercooling performance in the sub heat exchange part 13 improves.
- the connecting member 50 may be a U-shaped U-bend tube or a bent rectangular tube.
- the heat exchanger 1 acts as a condenser
- the flow direction of the refrigerant is opposed to the flow direction of the air at the auxiliary heat exchange unit 13, that is, at the outlet side of the heat exchanger 1.
- the heat exchanger 1 acts as an evaporator
- the refrigerant flowing through the U-bend pipe 24 flows opposite to the air flowing direction.
- the heat exchanger 1 acts as an evaporator
- the flow direction of the refrigerant is opposed to the flow direction of the air at the main heat exchange unit 12, that is, at the outlet side of the heat exchanger 1.
- a sufficient temperature difference between the superheated gas and the air can be secured at the outlet of the main heat exchange unit 12. Therefore, the heat exchange performance of the heat exchanger 1 is improved.
- the refrigerant flow direction is the air flow direction on the outlet side of the heat exchanger 1.
- the heat exchange performance of the heat exchanger 1 can be improved both when the heat exchanger 1 acts as a condenser and when the heat exchanger 1 acts as an evaporator.
- the effect of exhibiting the heat exchange performance is higher in the case of improving the supercooling performance by acting as a condenser than in the case of improving the heat exchange performance by acting as an evaporator. Therefore, in the case of a heat exchanger in which the refrigerant flow direction is the same between the main pipe connecting member of the main heat exchanging part and the sub pipe connecting member of the sub heat exchanging part as in the prior art, the heat exchanger acts as a condenser so Even if the heat flow performance (supercooling performance) is improved by making the flow direction of the refrigerant and air flowing through the sub pipe connection member of the exchange section counter flow, the main pipe of the main heat exchange section when operated as an evaporator Since the flow direction of the refrigerant flowing through the connection member and the air flow in parallel, a sufficient temperature difference between the superheated gas and the air at the outlet of the main heat exchange section cannot be secured, and the heat exchange performance of the heat exchanger is reduced. It cannot be improved.
- a step-stretching tube like the connecting member 50 is not used, but a direction parallel to the air flow direction (arrow Y).
- the tube straddling the row like the connection member 50 is used only in the row direction.
- the second main pipe 22 and the first main pipe 21 are adjacent to each other in a portion where the refrigerant is in a superheated state and a portion where the refrigerant is in a saturated liquid state. Yes. For this reason, the heat loss with the saturation region can be reduced, and as a result, the heat exchange performance of the heat exchanger 1 is improved.
- the heat exchanger 1 does not include the header 30 as in the main heat exchange unit 12 in the sub heat exchange unit 13. For this reason, when the heat exchanger 1 acts as a condenser, no heat loss occurs when shifting from the saturation region to the supercooling region. Furthermore, in the sub heat exchange part 13, since the 1st sub pipe 41 and the 2nd sub pipe 42 are connected to the three-way pipe 43 which is a branch pipe, this increases the number of branches. For this reason, pressure loss in a pipe can be reduced.
- FIG. 5 is a circuit diagram showing the air conditioner 2 according to the first embodiment.
- the air conditioner 2 includes a refrigerant circuit 3, and the refrigerant circuit 3 includes a compressor 80, a first heat exchanger 81, an expansion unit 82, and a second heat exchanger 83 connected by piping.
- the compressor 80 compresses the refrigerant
- the first heat exchanger 81 exchanges heat between the refrigerant and the air, and acts as a condenser.
- the refrigerant circuit 3 is provided with a first blower 84 and a first motor 84 a, and the first blower 84 and the first motor 84 a send air to the first heat exchanger 81. It blows air.
- the expansion part 82 expands the refrigerant.
- the second heat exchanger 83 exchanges heat between the refrigerant and the air, and acts as an evaporator.
- the refrigerant circuit 3 is provided with a second blower 85 and a second motor 85a, and the second blower 85 and the second motor 85a send air to the second heat exchanger 83. It blows air.
- the refrigerant circuit 3 includes a four-way valve, and by changing the flow of the refrigerant flowing through the refrigerant circuit 3 by the four-way valve, the first heat exchanger 81 acts as an evaporator, and the second The heat exchanger 83 can act as a condenser.
- the heat exchanger 1 according to the first embodiment is used for at least one of the first heat exchanger 81 and the second heat exchanger 83.
- coolant which distribute
- coolant etc. are used as a refrigerant
- the compressor 80 sucks the refrigerant, compresses the refrigerant, and discharges the refrigerant in a high-temperature and high-pressure gas state.
- the discharged refrigerant flows into the first heat exchanger 81, and the first heat exchanger 81 condenses the refrigerant by heat exchange with the air supplied from the first blower 84.
- the condensed refrigerant flows into the expansion unit 82, and the expansion unit 82 decompresses the condensed refrigerant.
- the decompressed refrigerant flows into the second heat exchanger 83, and the second heat exchanger 83 evaporates the refrigerant by heat exchange with the air supplied from the second blower 85. Then, the evaporated refrigerant is sucked into the compressor 80.
- the heat exchanger 1 according to Embodiment 1 is used for at least one of the first heat exchanger 81 and the second heat exchanger 83. For this reason, the heat exchange performance of the 1st heat exchanger 81 or the 2nd heat exchanger 83 in which the heat exchanger 1 which concerns on this Embodiment 1 was used improves.
- the cooling energy efficiency in cooling and the heating energy efficiency in heating will be described. The cooling energy efficiency is calculated from the following equation (1).
- Cooling energy efficiency evaporator (indoor heat exchanger) capacity / all inputs ... (1)
- the heating energy efficiency is calculated from the following equation (2).
- Heating energy efficiency condenser (indoor heat exchanger) capacity / total input (2)
- the air conditioner 2 uses the heat exchanger 1 according to the first embodiment for at least one of the first heat exchanger 81 and the second heat exchanger 83, the above formula (1 ) And Equation (2), the cooling energy efficiency and the heating energy efficiency are high.
- this Embodiment 1 can implement
- Embodiment 1 illustrated air and a refrigerant
- the refrigerating machine oil that circulates in the air conditioner 2 can use a mineral oil system, an alkylbenzene oil system, an ester oil system, an ether oil system, a fluorine oil system, etc., and whether these refrigerating machine oils are dissolved in the refrigerant. Does not depend on.
- FIG. 6 is a side view showing the heat exchanger 100 according to the second embodiment.
- the second embodiment is different from the first embodiment in that the liquid pipe 160 includes a first liquid pipe 161 and a second liquid pipe 162.
- portions common to the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences from the first embodiment will be mainly described.
- the liquid pipe 160 has one end connected to the auxiliary heat exchanging unit 13 and includes a first liquid pipe 161 and a second liquid pipe 162.
- the first liquid pipe 161 connects one end of the first sub pipe 41 installed below the sub heat exchanging section 13 to the upper side of the liquid side header 31, that is, the upper header 31a.
- the second liquid pipe 162 connects one end of the first sub pipe 41 installed above the sub heat exchange section 13 to the lower side of the liquid side header 31, that is, the lower header 31b. .
- the first sub-tube 41 installed below the sub-heat exchanger 13 has a large amount of liquid refrigerant biased by gravity. For this reason, the 1st sub pipe 41 installed in the lower part in the sub heat exchange part 13 and the upper header 31a with a wide space
- interval with this 1st sub pipe 41 are connected, and also in the sub heat exchange part 13
- the first sub-pipe 41 installed above is connected to the lower header 31b having a small interval between the first sub-pipe 41 and the first sub-pipe 41. Thereby, the bias of the refrigerant is suppressed and a distribution balance of the refrigerant is achieved. For this reason, the heat exchanger 100 which concerns on this Embodiment 2 can be made to heat-exchange efficiently.
- the heat exchanger 100 according to the second embodiment can also be applied to the air conditioner 2 according to the first embodiment.
- the present invention can be applied to an energy-saving heat pump device that is easy to manufacture and has good heat exchange performance.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Other Air-Conditioning Systems (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
Description
図1は、実施の形態1に係る熱交換器1を示す正面図である。この図1に基づいて、熱交換器1について説明する。図1に示すように、熱交換器1は、フィン部10と、主管20と、ヘアピン管23と、ヘッダ30と、副管40と、接続部材(副管接続部材)50とを備えている。
次に、実施の形態2に係る熱交換器100について説明する。図6は、実施の形態2に係る熱交換器100を示す一側面図である。本実施の形態2は、液配管160が、第1の液配管161及び第2の液配管162を備えている点で、実施の形態1と相違する。本実施の形態2では、実施の形態1と共通する部分は同一の符号を付して説明を省略し、実施の形態1との相違点を中心に説明する。
Claims (8)
- 送風機から送風される空気の送風方向に対して平行に並べられた第1の主フィンと、
前記第1の主フィンに挿入され内部に冷媒が流れる第1の主管と、
前記空気の送風方向に対して平行に並べられ、前記第1の主フィンよりも風上に設けられた第2の主フィンと、
前記第2の主フィンに挿入され内部に冷媒が流れる第2の主管と、
前記第1の主管及び前記第2の主管を接続し前記空気の送風方向に対して平行に延びる主管接続部材と、を有する主熱交換部、及び、
前記空気の送風方向に対して平行に並べられた第1の副フィンと、
前記第1の副フィンに挿入され内部に冷媒が流れる第1の副管と、
前記空気の送風方向に対して平行に並べられ、前記第1の副フィンよりも風上に設けられた第2の副フィンと、
前記第2の副フィンに挿入され内部に冷媒が流れる第2の副管と、
前記第1の副管及び前記第2の副管を接続し前記空気の送風方向に対して平行に延びる副管接続部材と、を有する副熱交換部
を備える熱交換器であって、
蒸発器として作用する場合、
前記主熱交換部を流れる冷媒は、前記第1の主管から前記第2の主管に向かって流れ、前記副熱交換部を流れる冷媒は、前記第2の副管から前記第1の副管に向かって流れ、
凝縮器として作用する場合、
前記主熱交換部を流れる冷媒は、前記第2の主管から前記第1の主管に向かって流れ、前記副熱交換部を流れる冷媒は、前記第1の副管から前記第2の副管に向かって流れる
熱交換器。 - 前記副管接続部材に流通する前記冷媒は、
前記副熱交換部が凝縮器として作用する場合に、前記空気の送風方向に対向して流通するものである
請求項1記載の熱交換器。 - 前記主管接続部材に流通する前記冷媒は、
前記主熱交換部が蒸発器として作用する場合に、前記空気の送風方向に対向して流通するものである
請求項1又は2記載の熱交換器。 - 前記副熱交換部は、前記主熱交換部よりも重力方向において下方に配置されており、
前記副熱交換部の重力方向における下方に設置された前記第1の副管の一端と、液側ヘッダの上方とを接続する第1の液配管と、
前記副熱交換部の重力方向における上方に設置された前記第1の副管の一端と、前記液側ヘッダの下方とを接続する第2の液配管と、を有する
請求項1~3のいずれか1項に記載の熱交換器。 - 複数の前記第1の主管及び複数の前記第2の主管は、重力方向に対し平行の方向に間隔を空けて配置されている
請求項1~4のいずれか1項に記載の熱交換器。 - 複数の前記第1の副管は、重力方向に対し平行の方向に間隔を空けて配置されており、
液配管の一端と、複数の前記第1の副管の一端とを接続する分岐管を更に有する
請求項1~5のいずれか1項に記載の熱交換器。 - 前記冷媒は、HFO1123冷媒を含むものである
請求項1~6のいずれか1項に記載の熱交換器。 - 前記冷媒を圧縮する圧縮機と、
請求項1~7のいずれか1項に記載の熱交換器と、を有する
空気調和機。
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