US20230003463A1 - Heat Exchanger - Google Patents
Heat Exchanger Download PDFInfo
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- US20230003463A1 US20230003463A1 US17/801,520 US202017801520A US2023003463A1 US 20230003463 A1 US20230003463 A1 US 20230003463A1 US 202017801520 A US202017801520 A US 202017801520A US 2023003463 A1 US2023003463 A1 US 2023003463A1
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- pipe
- flat
- liquid
- outlet
- inlet
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Classifications
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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
- F28D1/03—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 plate-like or laminated conduits
- F28D1/0308—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other
- F28D1/0325—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
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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
- F28F1/02—Tubular elements of cross-section which is non-circular
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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
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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
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
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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
- F28D1/053—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 straight
- F28D1/0535—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 straight the conduits having a non-circular cross-section
- F28D1/05358—Assemblies of conduits connected side by side or with individual headers, e.g. section type radiators
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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
- F28F1/34—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 obliquely
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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
- F28F11/00—Arrangements for sealing leaky tubes and conduits
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
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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
- 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
- F28F9/268—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by permanent joints, e.g. by welding
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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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
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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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like 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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
- F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
Definitions
- the disclosure relates to the technical field of heat exchangers, in particular to a heat exchanger.
- a micro-channel heat exchanger for double compressors which includes flat pipe groups and liquid collecting pipes, the flat pipe groups are distributed in parallel along an axial direction of the liquid collecting pipes, the liquid collecting pipes include a first liquid collecting pipe disposed at left ends of the flat pipe groups and a second liquid collecting pipe disposed at right ends of the flat pipe groups, an isolating assembly for separating an inner cavity of each liquid collecting pipe into an upper part inner cavity and a lower part inner cavity is disposed in the each liquid collecting pipe, counting backwards from a front end of each liquid collecting pipe, a left end of the odd-numbered flat pipe group communicates with the upper part inner cavity of the first liquid collecting pipe, a right end of the odd-numbered flat pipe group communicates with the lower part inner cavity of the second liquid collecting pipe, a left end of the even-numbered flat pipe group communicates with the lower part inner cavity of the first liquid collecting pipe, and a right end of the even-numbered flat pipe group communicates with the upper part inner cavity of the second liquid collecting pipe.
- the disclosure provides a heat exchanger, for solving the problem that the double-flow-path heat exchanger in the art known to inventors is complex in structure and inconvenient to manufacture and assemble.
- the disclosure provides a heat exchanger, which includes at least one flat pipe, each flat pipe is provided with a refrigerant cavity, an inlet, an outlet and two through holes, where the inlet and the outlet are located at two ends of the refrigerant cavity, respectively, and both the inlet and the outlet communicate with the refrigerant cavity; and the two through holes are respectively located at two ends of the refrigerant cavity, and the two through holes do not communicate with the refrigerant cavity.
- a plurality of flat pipes include first flat pipes and second flat pipes which are alternately distributed
- the heat exchanger further includes a first liquid inlet pipe, a second liquid inlet pipe, a first liquid outlet pipe and a second liquid outlet pipe, a first inlet of each first flat pipe communicates with the first liquid inlet pipe, a first outlet of the each first flat pipe communicates with the first liquid outlet pipe, a second inlet of each second flat pipe communicates with the second liquid inlet pipe, and a second outlet of the each second flat pipe communicates with the second liquid outlet pipe;
- two through holes of the first flat pipe are a first through hole and a second through hole respectively
- two through holes of the second flat pipe are a third through hole and a fourth through hole respectively, the first through hole is disposed corresponding to the second outlet, the second through hole is disposed corresponding the second inlet, the third through hole is disposed corresponding to the first inlet, the fourth through hole is disposed corresponding to the first outlet, the first through hole
- first liquid inlet pipe and the second liquid outlet pipe are located at one end of the each first flat pipe, and the first liquid outlet pipe and the second liquid inlet pipe are located at the other end of the each first flat pipe.
- the first liquid inlet pipe, the second liquid inlet pipe, the first liquid outlet pipe and the second liquid outlet pipe are distributed along a length direction of the first flat pipe, or the first liquid inlet pipe and the second liquid outlet pipe are distributed along a width direction of the first flat pipe, and the first liquid outlet pipe and the second liquid inlet pipe are distributed along the width direction of the first flat pipe.
- each flat pipe includes two heat exchange plates which are connected together in a sealed manner, and the two heat exchange plates are symmetrically disposed relative to a preset symmetry plane.
- each heat exchange plate includes a plate body, a welding edge disposed at a periphery of the plate body, and a first convex surface and a second convex surface disposed at two ends of the plate body at intervals, and the welding edge, the first convex surface and the second convex surface are all located on a same side of the plate body; an area between the plate bodies of the two heat exchange plates forms the refrigerant cavity, welding edges of the two heat exchange plates are welded together, the first convex surfaces of the two heat exchange plates are welded together, and the second convex surfaces of the two heat exchange plates are welded together; the inlet and the outlet are respectively located at two ends of the plate body, and the two through holes are respectively located on the first convex surface and the second convex surface.
- the first liquid inlet pipe includes a plurality of pipe sections which communicate in sequence, one end of each pipe section is connected with the first flat pipe in a sealed manner, and the other end of the each pipe section is connected with the second flat pipe in a sealed manner.
- the each pipe section includes a pipe body and a first ring body and a second ring body respectively disposed at two ends of the pipe body, the first ring body is welded with an outer wall of the first flat pipe, and the second ring body is welded with an outer wall of the second flat pipe.
- the first liquid inlet pipe, the second liquid inlet pipe, the first liquid outlet pipe and the second liquid outlet pipe have the same structure.
- the heat exchanger which includes the flat pipes, each flat pipe is provided with the refrigerant cavity, the inlet, the outlet, and two through holes, where the inlet and the outlet are located at two ends of the refrigerant cavity, respectively, and both the inlet and the outlet communicate with the refrigerant cavity; and the two through holes are respectively located at two ends of the refrigerant cavity, and the two through holes do not communicate with the refrigerant cavity.
- the flat pipe is provided with the inlet, the outlet and two through holes
- the liquid collecting pipes the liquid inlet pipes or the liquid outlet pipes
- different flat pipes can choose to use the inlets or outlets to communicate with the liquid collecting pipes, and the through holes can be used to avoid the liquid collecting pipes, so that different parts in the heat exchanger are convenient to arrange and assemble, thus realizing double flow paths.
- FIG. 1 illustrates a schematic structure diagram of a heat exchanger provided by embodiment 1 of the disclosure.
- FIG. 2 illustrates an exploded diagram of the heat exchanger in FIG. 1 .
- FIG. 3 illustrates an enlarged partial diagram of the heat exchanger in FIG. 1 .
- FIG. 4 illustrates a schematic structure diagram of a first flat pipe in FIG. 1 .
- FIG. 5 illustrates an enlarged partial diagram of the left end of the first flat pipe in FIG. 4 .
- FIG. 6 illustrates an enlarged partial diagram of the right end the first flat pipe in FIG. 4 .
- FIG. 7 illustrates a schematic structure diagram of a heat exchanger provided by embodiment 2 of the disclosure.
- FIG. 8 illustrates an exploded diagram of the heat exchanger in FIG. 7 .
- FIG. 9 illustrates a cross-sectional diagram of the heat exchanger in FIG. 7 at position A-A.
- FIG. 10 illustrates a cross-sectional diagram of the heat exchanger in FIG. 7 at position B-B.
- FIG. 11 illustrates a schematic structure diagram of the first flat pipe in FIG. 7 .
- the flat pipe is provided with the inlet, the outlet and two through holes
- liquid collecting pipes the liquid inlet pipes or liquid outlet pipes
- different flat pipes can choose to use the inlets or outlets to communicate with the liquid collecting pipes, and the through holes is able to be used to avoid the liquid collecting pipes, so that different parts in the heat exchanger are convenient to arrange and assemble, thus realizing double flow paths.
- the first inlet 21 of the first flat pipe 20 is the inlet of the flat pipe
- the first outlet 22 of the first flat pipe 20 is the outlet of the flat pipe
- the second inlet 31 of the second flat pipe 30 is the inlet of the flat pipe
- the second outlet 32 of the second flat pipe 30 is the outlet of the flat pipe.
- the first liquid inlet pipe 11 and the second liquid outlet pipe 14 are located at one end of the first flat pipe 20
- the first liquid outlet pipe 13 and the second liquid inlet pipe 12 are located the other end of the first flat pipe 20 .
- the first liquid inlet pipe 11 , the second liquid inlet pipe 12 , the first liquid outlet pipe 13 and the second liquid outlet pipe 14 are distributed along a length direction of the first flat pipe 20 .
- the first liquid inlet pipe 11 and the second liquid outlet pipe 14 are distributed along a width direction of the first flat pipe 20
- the first liquid outlet pipe 13 and the second liquid inlet pipe 12 are distributed along the width direction of first flat pipe 20 .
- each heat exchange plate 25 includes a plate body 26 , a welding edge 27 disposed at a periphery of the plate body 26 , and a first convex surface 28 and a second convex surface 29 disposed at two ends of the plate body 26 at intervals, and the welding edge 27 , the first convex surface 28 and the second convex surface 29 are all located on the same side of the plate body 26 ; an area between the plate bodies 26 of the two heat exchange plates 25 forms the refrigerant cavity, welding edges 27 of the two heat exchange plates 25 are welded together, the first convex surfaces 28 of the two heat exchange plates 25 are welded together, and the second convex surfaces 29 of the two heat exchange plates 25 are welded together; the first inlet 21 and the first outlet 22 are respectively located at two ends of the plate body 26 , the first through hole 23 is located on the first convex surface 28 , and the second through hole 24 is located on the second convex surface 29 . In this way, it is convenient to process the inlet, the
- the first liquid inlet pipe 11 includes a plurality of pipe sections 15 which communicate in sequence, one end of each pipe section 15 is connected with the first flat pipe 20 in a sealed manner, and the other end of the each pipe section 15 is connected with the second flat pipe 30 in a sealed manner.
- each pipe section 15 includes a pipe body and a first ring body and a second ring body respectively disposed at two ends of the pipe body, the first ring body is welded with an outer wall of the first flat pipe 20 , and the second ring body is welded with an outer wall of the second flat pipe 30 .
- welding is facilitated, and the connection strength and sealing effect are improved.
Abstract
A heat exchanger, including at least one flat pipe, each flat pipe is provided with a refrigerant cavity, an inlet, an outlet and two through holes, the inlet and the outlet are located at two ends of the refrigerant cavity, respectively, and both the inlet and the outlet communicate with the refrigerant cavity; the two through holes are respectively located at two ends of the refrigerant cavity, and the two through holes do not communicate with the refrigerant cavity. The flat pipe is provided with the inlet, the outlet and two through holes, when the plurality of flat pipes are matched with liquid collecting pipes (liquid inlet pipes or liquid outlet pipes) of the heat exchanger, different flat pipes can choose to use the inlets or outlets to communicate with the liquid collecting pipes, and the through holes are able to be used to avoid the liquid collecting pipes.
Description
- The present disclosure is a national stage application of International Patent Application No. PCT/CN2020/138147, which is filed on Dec. 21, 2020. The present disclosure claims priority to Patent Application No. 202010125842.5, filed to the China National Intellectual Property Administration on Feb. 27, 2020 and entitled “Heat Exchanger”.
- The disclosure relates to the technical field of heat exchangers, in particular to a heat exchanger.
- In an art known to inventors, a micro-channel heat exchanger for double compressors is disclosed, which includes flat pipe groups and liquid collecting pipes, the flat pipe groups are distributed in parallel along an axial direction of the liquid collecting pipes, the liquid collecting pipes include a first liquid collecting pipe disposed at left ends of the flat pipe groups and a second liquid collecting pipe disposed at right ends of the flat pipe groups, an isolating assembly for separating an inner cavity of each liquid collecting pipe into an upper part inner cavity and a lower part inner cavity is disposed in the each liquid collecting pipe, counting backwards from a front end of each liquid collecting pipe, a left end of the odd-numbered flat pipe group communicates with the upper part inner cavity of the first liquid collecting pipe, a right end of the odd-numbered flat pipe group communicates with the lower part inner cavity of the second liquid collecting pipe, a left end of the even-numbered flat pipe group communicates with the lower part inner cavity of the first liquid collecting pipe, and a right end of the even-numbered flat pipe group communicates with the upper part inner cavity of the second liquid collecting pipe. According to the technical solution, when one compressor is started, the fin part of the heat exchanger can still be in complete contact with another flow path for heat exchange, then a heat exchange area of the heat exchanger is utilized to the maximum extent, energy such as wind energy and electric energy is reasonably utilized, the heat exchange efficiency is improved, and a purpose of saving energy is achieved. However, for the heat exchanger, due to the limitation of the structures such as the flat pipes, in order to realize double flow paths, the complex structures such as the isolating assembly need to be disposed, so that the problems that the structure is complex and the manufacturing and assembly are inconvenient exist.
- The disclosure provides a heat exchanger, for solving the problem that the double-flow-path heat exchanger in the art known to inventors is complex in structure and inconvenient to manufacture and assemble.
- In order to solve the above problem, the disclosure provides a heat exchanger, which includes at least one flat pipe, each flat pipe is provided with a refrigerant cavity, an inlet, an outlet and two through holes, where the inlet and the outlet are located at two ends of the refrigerant cavity, respectively, and both the inlet and the outlet communicate with the refrigerant cavity; and the two through holes are respectively located at two ends of the refrigerant cavity, and the two through holes do not communicate with the refrigerant cavity.
- In some embodiments, a plurality of flat pipes are provided, the plurality of flat pipes include first flat pipes and second flat pipes which are alternately distributed, the heat exchanger further includes a first liquid inlet pipe, a second liquid inlet pipe, a first liquid outlet pipe and a second liquid outlet pipe, a first inlet of each first flat pipe communicates with the first liquid inlet pipe, a first outlet of the each first flat pipe communicates with the first liquid outlet pipe, a second inlet of each second flat pipe communicates with the second liquid inlet pipe, and a second outlet of the each second flat pipe communicates with the second liquid outlet pipe; two through holes of the first flat pipe are a first through hole and a second through hole respectively, two through holes of the second flat pipe are a third through hole and a fourth through hole respectively, the first through hole is disposed corresponding to the second outlet, the second through hole is disposed corresponding the second inlet, the third through hole is disposed corresponding to the first inlet, the fourth through hole is disposed corresponding to the first outlet, the first through hole communicates with the second liquid outlet pipe, the second through hole communicates with the second liquid inlet pipe, the third through hole communicates with the first liquid inlet pipe, and the fourth through hole communicates with the first liquid outlet pipe.
- In some embodiments, the first liquid inlet pipe and the second liquid outlet pipe are located at one end of the each first flat pipe, and the first liquid outlet pipe and the second liquid inlet pipe are located at the other end of the each first flat pipe.
- In some embodiments, the first liquid inlet pipe, the second liquid inlet pipe, the first liquid outlet pipe and the second liquid outlet pipe are distributed along a length direction of the first flat pipe, or the first liquid inlet pipe and the second liquid outlet pipe are distributed along a width direction of the first flat pipe, and the first liquid outlet pipe and the second liquid inlet pipe are distributed along the width direction of the first flat pipe.
- In some embodiments, each flat pipe includes two heat exchange plates which are connected together in a sealed manner, and the two heat exchange plates are symmetrically disposed relative to a preset symmetry plane.
- In some embodiments, each heat exchange plate includes a plate body, a welding edge disposed at a periphery of the plate body, and a first convex surface and a second convex surface disposed at two ends of the plate body at intervals, and the welding edge, the first convex surface and the second convex surface are all located on a same side of the plate body; an area between the plate bodies of the two heat exchange plates forms the refrigerant cavity, welding edges of the two heat exchange plates are welded together, the first convex surfaces of the two heat exchange plates are welded together, and the second convex surfaces of the two heat exchange plates are welded together; the inlet and the outlet are respectively located at two ends of the plate body, and the two through holes are respectively located on the first convex surface and the second convex surface.
- In some embodiments, the inlet, one of the two through holes, the outlet and the other of the two through holes are distributed along a length direction of the heat exchange plate; or, the inlet and one of the two through holes are distributed along a width direction of the heat exchange plate, and the outlet and the other of the two through holes are distributed along the width direction of the heat exchange plate.
- In some embodiments, the first liquid inlet pipe includes a plurality of pipe sections which communicate in sequence, one end of each pipe section is connected with the first flat pipe in a sealed manner, and the other end of the each pipe section is connected with the second flat pipe in a sealed manner.
- In some embodiments, the each pipe section includes a pipe body and a first ring body and a second ring body respectively disposed at two ends of the pipe body, the first ring body is welded with an outer wall of the first flat pipe, and the second ring body is welded with an outer wall of the second flat pipe.
- In some embodiments, the first liquid inlet pipe, the second liquid inlet pipe, the first liquid outlet pipe and the second liquid outlet pipe have the same structure.
- By adoption of the technical solution of some embodiments in the disclosure, the heat exchanger is provided, which includes the flat pipes, each flat pipe is provided with the refrigerant cavity, the inlet, the outlet, and two through holes, where the inlet and the outlet are located at two ends of the refrigerant cavity, respectively, and both the inlet and the outlet communicate with the refrigerant cavity; and the two through holes are respectively located at two ends of the refrigerant cavity, and the two through holes do not communicate with the refrigerant cavity. By adoption of the technical solution of the disclosure, since the flat pipe is provided with the inlet, the outlet and two through holes, when the plurality of flat pipes are matched with the liquid collecting pipes (the liquid inlet pipes or the liquid outlet pipes) of the heat exchanger, different flat pipes can choose to use the inlets or outlets to communicate with the liquid collecting pipes, and the through holes can be used to avoid the liquid collecting pipes, so that different parts in the heat exchanger are convenient to arrange and assemble, thus realizing double flow paths. Compared with the art known to inventors, there is no need to dispose complex structures such as the isolating assembly, thus the structure of the heat exchanger is simplified, and the manufacturing and assembling are facilitated.
- The drawings, which form a part hereof, serve to provide a further understanding of the disclosure, and illustrative embodiments of the disclosure and descriptions thereof serve to explain the disclosure and are not to be construed as unduly limiting the disclosure. In the drawings:
-
FIG. 1 illustrates a schematic structure diagram of a heat exchanger provided by embodiment 1 of the disclosure. -
FIG. 2 illustrates an exploded diagram of the heat exchanger inFIG. 1 . -
FIG. 3 illustrates an enlarged partial diagram of the heat exchanger inFIG. 1 . -
FIG. 4 illustrates a schematic structure diagram of a first flat pipe inFIG. 1 . -
FIG. 5 illustrates an enlarged partial diagram of the left end of the first flat pipe inFIG. 4 . -
FIG. 6 illustrates an enlarged partial diagram of the right end the first flat pipe inFIG. 4 . -
FIG. 7 illustrates a schematic structure diagram of a heat exchanger provided by embodiment 2 of the disclosure. -
FIG. 8 illustrates an exploded diagram of the heat exchanger inFIG. 7 . -
FIG. 9 illustrates a cross-sectional diagram of the heat exchanger inFIG. 7 at position A-A. -
FIG. 10 illustrates a cross-sectional diagram of the heat exchanger inFIG. 7 at position B-B. -
FIG. 11 illustrates a schematic structure diagram of the first flat pipe inFIG. 7 . -
FIG. 12 illustrates a cross-sectional diagram of a left end of the first flat pipe inFIG. 11 . -
FIG. 13 illustrates a cross-sectional diagram of a right end of the first flat pipe inFIG. 11 . - Where, the above-mentioned figures include the following reference numerals:
- 11. First liquid inlet pipe; 12. Second liquid inlet pipe; 13. First liquid outlet pipe; 14. Second liquid outlet pipe; 15. Pipe section; 20. First flat pipe; 21. First inlet; 22. First outlet; 23. First through hole; 24. Second through hole; 25. Heat exchange plate; 26. Plate body; 27. Welding edge; 28. First convex surface; 29. Second convex surface; 30. Second flat pipe; 31. Second inlet; 32. Second outlet; 33. Third through hole; 34. Fourth through hole; and 40. Fin.
- A clear and complete description on the technical solutions in the embodiments of the disclosure will be given below, in combination with the drawings in the embodiments of the disclosure. Obviously, the above-described embodiments are only some, but not all, embodiments of the disclosure. The following description for at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the disclosure without creative efforts shall fall within the protection scope of the disclosure.
- A shown in the figures, the embodiments of the disclosure provide a heat exchanger, which includes at least one flat pipe, each flat pipe is provided with a refrigerant cavity, an inlet, an outlet and two through holes, where the inlet and the outlet are located at two ends of the refrigerant cavity, respectively, and both the inlet and the outlet communicate with the refrigerant cavity; the two through holes are respectively located at two ends of the refrigerant cavity, and the two through holes do not communicate with the refrigerant cavity. By adoption of the technical solution of the disclosure, since the flat pipe is provided with the inlet, the outlet and two through holes, when the plurality of flat pipes are matched with liquid collecting pipes (the liquid inlet pipes or liquid outlet pipes) of the heat exchanger, different flat pipes can choose to use the inlets or outlets to communicate with the liquid collecting pipes, and the through holes is able to be used to avoid the liquid collecting pipes, so that different parts in the heat exchanger are convenient to arrange and assemble, thus realizing double flow paths. Compared with an art known to inventors, there is no need to dispose complex structures such as the isolating assembly, thus the structure of the heat exchanger is simplified, and the manufacturing and assembling are facilitated.
- In the embodiment, a plurality of flat pipes are available, the plurality of flat pipes include first flat pipes 20 and second flat pipes 30 which are alternately distributed, the heat exchanger further includes a first liquid inlet pipe 11, a second liquid inlet pipe 12, a first liquid outlet pipe 13 and a second liquid outlet pipe 14, a first inlet 21 of each first flat pipe 20 communicates with the first liquid inlet pipe 11, a first outlet 22 of the each first flat pipe 20 communicates with the first liquid outlet pipe 13, a second inlet 31 of each second flat pipe 30 communicates with the second liquid inlet pipe 12, and a second outlet 32 of the each second flat pipe 30 communicates with the second liquid outlet pipe 14; two through holes of first flat pipe 20 are a first through hole 23 and a second through hole 24 respectively, two through holes of the second flat pipe 30 are a third through hole 33 and a fourth through hole 34 respectively, the first through hole 23 is disposed corresponding to the second outlet 32, the second through hole 24 is disposed corresponding the second inlet 31, the third through hole 33 is disposed corresponding to the first inlet 21, the fourth through hole 34 is disposed corresponding to the first outlet 22, the first through hole 23 communicates with the second liquid outlet pipe 14, the second through hole 24 communicates with the second liquid inlet pipe 12, the third through hole 33 communicates with the first liquid inlet pipe 11, and the fourth through hole 34 communicates with the first liquid outlet pipe 13.
- In the technical solution, the
first inlet 21 of the firstflat pipe 20 is the inlet of the flat pipe, and thefirst outlet 22 of the firstflat pipe 20 is the outlet of the flat pipe. Thesecond inlet 31 of the secondflat pipe 30 is the inlet of the flat pipe, and thesecond outlet 32 of the secondflat pipe 30 is the outlet of the flat pipe. By adoption of the technical solution, double flow paths can be realized by the cooperation of the first liquid inlet pipe 11, the secondliquid inlet pipe 12, the firstliquid outlet pipe 13 and the secondliquid outlet pipe 14 with a plurality of firstflat pipes 20 and a plurality of secondflat pipes 30 which are alternately disposed. Compared with the art known to inventors, there is no need to dispose complex structures such as the isolating assembly, thus the structure of the heat exchanger is simplified, and the manufacturing and assembling are facilitated. - In some embodiments, the plurality of first
flat pipes 20 and the plurality of secondflat pipes 30 are alternately disposed, that is, there is one secondflat pipe 30 between two adjacent firstflat pipes 20 and one firstflat pipe 20 between two adjacent secondflat pipes 30. In some embodiments,fins 40 are disposed between adjacent firstflat pipe 20 and secondflat pipes 30, so that the heat exchange area is increased. According to the technical solution, the heat exchanger has two flow paths, during use, each flow path corresponds to one compressor, therefore, when one compressor is started, one flow path is closed, a fin part of the heat exchanger can still be in complete contact with the other flow path for heat exchange, so that the heat exchange area of the heat exchanger is utilized to the maximum extent, energy such as wind energy and electric energy is reasonably utilized, the heat exchange efficiency is improved, and the purpose of saving energy is achieved. - In some embodiments, the first
flat pipe 20 and the secondflat pipe 30 have the same structure, and the firstflat pipe 20 and the secondflat pipe 30 are installed interchangeably. Therefore, only one flat pipe needs to be manufactured, which is beneficial for reducing the manufacturing cost, and meanwhile, the assembly is convenient. During assembly, the firstflat pipe 20 can be assembled to the position of the secondflat pipe 30 by rotating 180 degrees, or the secondflat pipe 30 can be assembled to the position of the firstflat pipe 20 by rotating 180 degrees. - In some embodiments, the first liquid inlet pipe 11 and the second
liquid outlet pipe 14 are located at one end of the firstflat pipe 20, and the firstliquid outlet pipe 13 and the secondliquid inlet pipe 12 are located the other end of the firstflat pipe 20. Through the above arrangement, the condensation in the two flow paths flows reversely, which is beneficial for improving the heat exchange uniformity at different positions. - In some embodiments, the first liquid inlet pipe 11, the second
liquid inlet pipe 12, the firstliquid outlet pipe 13 and the secondliquid outlet pipe 14 are distributed along a length direction of the firstflat pipe 20. In embodiment 2, the first liquid inlet pipe 11 and the secondliquid outlet pipe 14 are distributed along a width direction of the firstflat pipe 20, and the firstliquid outlet pipe 13 and the secondliquid inlet pipe 12 are distributed along the width direction of firstflat pipe 20. The above two arrangement manners are different and can achieve the same heat exchange effect. - In some embodiments, the flat pipe (the first
flat pipe 20 or the second flat pipe 30) includes twoheat exchange plates 25 which are connected together in a sealed manner, and the twoheat exchange plates 25 are symmetrically disposed relative to a preset symmetry plane, which is beneficial for processing. In some embodiments, the firstflat pipe 20 is stamped and formed into heat exchange plates by a composite aluminum plate, and the two heat exchange plates are mirror-overlapped to form the firstflat pipe 20, which is then brazed into a whole, belonging to the category of stamping and forming of flat pipes. The secondflat pipe 30 can also be processed in this way. - In some embodiments, each
heat exchange plate 25 includes aplate body 26, awelding edge 27 disposed at a periphery of theplate body 26, and a firstconvex surface 28 and a secondconvex surface 29 disposed at two ends of theplate body 26 at intervals, and thewelding edge 27, the firstconvex surface 28 and the secondconvex surface 29 are all located on the same side of theplate body 26; an area between theplate bodies 26 of the twoheat exchange plates 25 forms the refrigerant cavity, welding edges 27 of the twoheat exchange plates 25 are welded together, the firstconvex surfaces 28 of the twoheat exchange plates 25 are welded together, and the secondconvex surfaces 29 of the twoheat exchange plates 25 are welded together; thefirst inlet 21 and thefirst outlet 22 are respectively located at two ends of theplate body 26, the first throughhole 23 is located on the firstconvex surface 28, and the second throughhole 24 is located on the secondconvex surface 29. In this way, it is convenient to process the inlet, the outlet and each through hole, meanwhile, a communication between the through hole and the refrigerant cavity is avoided, thus avoiding the communication between the two flow paths. - Taking the first
flat pipe 20 as an example, in embodiment 1, thefirst inlet 21, the first throughhole 23, thefirst outlet 22 and the second throughhole 24 are distributed along a length direction of theheat exchange plate 25. In embodiment 2, thefirst inlet 21 and the first throughhole 23 are distributed along a width direction ofheat exchange pipe 25, and thefirst outlet 22 and the second throughhole 24 are distributed along the width direction ofheat exchange plate 25. - In some embodiments, the first liquid inlet pipe 11 includes a plurality of
pipe sections 15 which communicate in sequence, one end of eachpipe section 15 is connected with the firstflat pipe 20 in a sealed manner, and the other end of the eachpipe section 15 is connected with the secondflat pipe 30 in a sealed manner. Through above arrangement, the connection of the first liquid inlet pipe 11 with a plurality of firstflat pipes 20 and a plurality of secondflat pipes 30 is facilitated. - Specifically, each
pipe section 15 includes a pipe body and a first ring body and a second ring body respectively disposed at two ends of the pipe body, the first ring body is welded with an outer wall of the firstflat pipe 20, and the second ring body is welded with an outer wall of the secondflat pipe 30. Through above arrangement, welding is facilitated, and the connection strength and sealing effect are improved. - In some embodiments, the first liquid inlet pipe 11, the second
liquid inlet pipe 12, the firstliquid outlet pipe 13 and the secondliquid outlet pipe 14 have the same structure. In this way, the number of parts of the heat exchanger can be reduced, processing and assembly are facilitated, and the manufacturing cost can be reduced. - By adoption of the technical solution, the heat exchanger includes the first liquid inlet pipe 11, the second
liquid inlet pipe 12, the firstliquid outlet pipe 13, the secondliquid outlet pipe 14, the firstflat pipe 20 and the secondflat pipe 30, two ends of the firstflat pipe 20 are respectively provided with afirst inlet 21 and afirst outlet 22 which communicate with the refrigerant cavity in the firstflat pipe 20, two ends of the secondflat pipe 30 are respectively provided with thesecond inlet 31 and thesecond outlet 32 both communicating with the refrigerant cavity in the secondflat pipe 30, a plurality of firstflat pipes 20 and a plurality of secondflat pipes 30 are available, the plurality of firstflat pipes 20 and the plurality of secondflat pipes 30 are alternately distributed, thefirst inlet 21 of each firstflat pipe 20 communicates with the first liquid inlet pipe 11, thefirst outlet 22 of each firstflat pipe 20 communicates with the firstliquid outlet pipe 13, thesecond inlet 31 of each secondflat pipe 30 communicates with the secondliquid inlet 12, and thesecond outlet 32 of each secondflat pipe 30 communicates with the secondliquid outlet pipe 14. By adoption of the technical solution, a double flow path is realized by the cooperation of the first liquid inlet pipe 11, the secondliquid inlet pipe 12, the firstliquid outlet pipe 13 and the secondliquid outlet pipe 14 with a plurality of firstflat pipes 20 and a plurality of secondflat pipes 30 which are alternately disposed. Compared with the art known to inventors, there is no need to dispose complex structures such as the isolating assembly, thus the structure of the heat exchanger is simplified, and the manufacturing and assembling are facilitated. In addition, the firstflat pipe 20 and the secondflat pipe 30 can be interchanged, which is beneficial for processing and assembly. - The foregoing is merely some embodiments of the disclosure and is not intended to limit the disclosure, and various modifications and variations of the disclosure may be available for those skilled in the art. Any modifications, equivalents, improvements, etc., made within the spirit and principles of the disclosure are intended to be included within the scope of the disclosure.
Claims (10)
1. A heat exchanger, comprising at least one flat pipe, each flat pipe is provided with a refrigerant cavity, an inlet, an outlet and two through holes, wherein the inlet and the outlet are located at two ends of the refrigerant cavity respectively, and both the inlet and the outlet communicate with the refrigerant cavity; and the two through holes are respectively located at two ends of the refrigerant cavity, and the two through holes do not communicate with the refrigerant cavity.
2. The heat exchanger as claimed in claim 1 , wherein a plurality of flat pipes are provided, the plurality of flat pipes comprise first flat pipes and second flat pipes which are alternately distributed, the heat exchanger further comprises a first liquid inlet pipe, a second liquid inlet pipe, a first liquid outlet pipe and a second liquid outlet pipe, a first inlet of each first flat pipe communicates with the first liquid inlet pipe, a first outlet of the each first flat pipe communicates with the first liquid outlet pipe, a second inlet of each second flat pipe communicates with the second liquid inlet pipe, and a second outlet of the each second flat pipe communicates with the second liquid outlet pipe;
two through holes of the first flat pipe are a first through hole and second through hole respectively, two through holes of the second flat pipe are a third through hole and a fourth through hole respectively, the first through hole corresponds to the second outlet, the second through hole corresponds to the second inlet, the third through hole is disposed corresponding to the first inlet, the fourth through hole is disposed corresponding to the first outlet, the first through hole communicates with the second liquid outlet pipe, the second through hole communicates with the second liquid inlet pipe, the third through hole communicates with the first liquid inlet pipe, and the fourth through hole communicates with the first liquid outlet pipe.
3. The heat exchanger as claimed in claim 2 , wherein the first liquid inlet pipe and the second liquid outlet pipe are located at one end of the each first flat pipe, and the first liquid outlet pipe and the second liquid inlet pipe are located at the other end of the each first flat pipe.
4. The heat exchanger as claimed in claim 2 , wherein the first liquid inlet pipe, the second liquid inlet pipe, the first liquid outlet pipe and the second liquid outlet pipe are distributed along a length direction of the first flat pipe; or
the first liquid inlet pipe and the second liquid outlet pipe are distributed along a width direction of the first flat pipe, and the first liquid outlet pipe and the second liquid inlet pipe are distributed along the width direction of the first flat pipe.
5. The heat exchanger as claimed in claim 1 , wherein each flat pipe comprises two heat exchange plates which are connected together in a sealed manner, and the two heat exchange plates are symmetrically disposed relative to a preset symmetry plane.
6. The heat exchanger as claimed in claim 5 , wherein each heat exchange plate comprises a plate body, a welding edge disposed at a periphery of the plate body, and a first convex surface and a second convex surface disposed at two ends of the plate body at intervals, and the welding edge, the first convex surface and the second convex surface are all located on a same side of the plate body; an area between plate bodies of the two heat exchange plates forms the refrigerant cavity, welding edges of the two heat exchange plates are welded together, first convex surfaces of the two heat exchange plates are welded together, and second convex surfaces of the two heat exchange plates are welded together; the inlet and the outlet are respectively located at two ends of the plate body, and the two through holes are respectively located on the first convex surface and the second convex surface.
7. The heat exchanger as claimed in claim 6 , wherein the inlet, one of the two through holes, the outlet and the other of the two through holes are distributed along a length direction of the heat exchange plate; or,
the inlet and one of the two through holes are distributed along a width direction of the heat exchange plate, and the outlet and the other of the two through holes are distributed along the width direction of the heat exchange plate.
8. The heat exchanger as claimed in claim 2 , wherein the first liquid inlet pipe comprises a plurality of pipe sections which communicate in sequence, one end of each pipe section is connected with the first flat pipe in a sealed manner, and the other end of the each pipe section is connected with the second flat pipe in a sealed manner.
9. The heat exchanger as claimed in claim 8 , wherein the each pipe section comprises a pipe body and a first ring body and a second ring body respectively disposed at two ends of the pipe body, the first ring body is welded with an outer wall of the first flat pipe, and the second ring body is welded with an outer wall of the second flat pipe.
10. The heat exchanger as claimed in claim 8 , wherein the first liquid inlet pipe, the second liquid inlet pipe, the first liquid outlet pipe and the second liquid outlet pipe have the same structure.
Applications Claiming Priority (3)
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CN202010125842.5 | 2020-02-27 | ||
CN202010125842.5A CN113310340A (en) | 2020-02-27 | 2020-02-27 | Heat exchanger |
PCT/CN2020/138147 WO2021169532A1 (en) | 2020-02-27 | 2020-12-21 | Heat exchanger |
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US20230003463A1 true US20230003463A1 (en) | 2023-01-05 |
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US17/801,520 Pending US20230003463A1 (en) | 2020-02-27 | 2020-12-21 | Heat Exchanger |
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US (1) | US20230003463A1 (en) |
JP (1) | JP2023516888A (en) |
CN (1) | CN113310340A (en) |
WO (1) | WO2021169532A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE3215961A1 (en) * | 1982-04-29 | 1983-11-03 | Dieter 9050 Steinegg-Appenzell Steeb | Heat exchanger |
JPH1078269A (en) * | 1996-09-04 | 1998-03-24 | Showa Alum Corp | Multilayer evaporator |
JP4147709B2 (en) * | 1999-03-05 | 2008-09-10 | 株式会社デンソー | Refrigerant condenser |
US6536517B2 (en) * | 2000-06-26 | 2003-03-25 | Showa Denko K.K. | Evaporator |
CN101782295B (en) * | 2009-01-20 | 2012-11-14 | 三花控股集团有限公司 | Loop structure of bidirectional microchannel heat exchanger |
KR20120135800A (en) * | 2011-06-07 | 2012-12-17 | 주식회사 고산 | Heat exchanger for combined evaportor and condenser |
CN204535515U (en) * | 2015-01-23 | 2015-08-05 | 杭州沈氏节能科技股份有限公司 | A kind of fin-type heat exchange unit and the heat exchanger containing this unit |
CN205245622U (en) * | 2015-11-30 | 2016-05-18 | 河南新飞电器有限公司 | Little micro -channel condenser in multithread way |
CN109539852A (en) * | 2017-09-22 | 2019-03-29 | 浙江盾安机械有限公司 | A kind of flat tube and micro-channel heat exchanger of micro-channel heat exchanger |
CN108344090A (en) * | 2018-04-08 | 2018-07-31 | 珠海格力电器股份有限公司 | A kind of regenerative apparatus and air-conditioning |
CN109668353B (en) * | 2018-12-18 | 2021-11-16 | 江西新电汽车空调系统有限公司 | Double-layer indoor condenser applied to heat pump air conditioner for new energy vehicle |
CN110030846A (en) * | 2019-04-10 | 2019-07-19 | 清华大学 | Three media heat exchangers |
CN211717240U (en) * | 2020-02-27 | 2020-10-20 | 浙江盾安热工科技有限公司 | Heat exchanger |
-
2020
- 2020-02-27 CN CN202010125842.5A patent/CN113310340A/en active Pending
- 2020-12-21 US US17/801,520 patent/US20230003463A1/en active Pending
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WO2021169532A1 (en) | 2021-09-02 |
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