EP4235058A1 - Heat exchanger and refrigeration cycle device - Google Patents
Heat exchanger and refrigeration cycle device Download PDFInfo
- Publication number
- EP4235058A1 EP4235058A1 EP20958620.5A EP20958620A EP4235058A1 EP 4235058 A1 EP4235058 A1 EP 4235058A1 EP 20958620 A EP20958620 A EP 20958620A EP 4235058 A1 EP4235058 A1 EP 4235058A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flat tubes
- plate
- heat exchanger
- gravity
- header
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005057 refrigeration Methods 0.000 title claims description 10
- 238000003780 insertion Methods 0.000 claims abstract description 95
- 230000037431 insertion Effects 0.000 claims abstract description 95
- 238000004891 communication Methods 0.000 claims abstract description 66
- 230000005484 gravity Effects 0.000 claims abstract description 33
- 238000009423 ventilation Methods 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 31
- 238000010586 diagram Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005219 brazing Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
-
- 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
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- 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
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05341—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
-
- 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
-
- 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
- F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
- F28F9/0221—Header boxes or end plates formed by stacked elements
-
- 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
- F28F9/0246—Arrangements for connecting header boxes with flow lines
-
- 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
- F28F2009/0285—Other particular headers or end plates
- F28F2009/0292—Other particular headers or end plates with fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/04—Fastening; Joining by brazing
-
- 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
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates
Definitions
- the present disclosure relates to a heat exchanger and a refrigeration cycle apparatus.
- Japanese Patent Laying-Open No. 2015-113983 discloses a heat exchanger including: a first heat exchange element having a plurality of first flat tubes; a second heat exchange element having a plurality of second flat tubes; and a folded header at which refrigerant having passed through the first heat exchange element is turned and introduced into the second heat exchange element.
- each of the first flat tubes and each of the second flat tubes are disposed at the same height in the vertical direction, one of each first flat tube and each second flat tube is located downstream of the other in the ventilation direction.
- the flat tubes disposed on the downstream side are located in the dead water zone formed behind the flat tubes disposed on the upstream side.
- a main object of the present disclosure is to provide a heat exchanger enhanced in heat exchange performance as compared with the above-mentioned conventional heat exchanger, and a refrigeration cycle apparatus including the heat exchanger.
- a heat exchanger includes: a first heat exchange portion and a second heat exchange portion arranged side by side in a first direction intersecting with a direction of gravity.
- the first heat exchange portion has: a plurality of first fins extending in the direction of gravity and arranged side by side in a second direction intersecting with the direction of gravity and the first direction; and a plurality of first flat tubes mounted to intersect with each of the first fins and arranged side by side in the direction of gravity.
- the second heat exchange portion has: a plurality of second fins extending in the direction of gravity and arranged side by side in the second direction; and a plurality of second flat tubes mounted to intersect with each of the second fins and arranged side by side in the direction of gravity.
- the heat exchanger further includes: a first header connected to a first end of each of the first flat tubes; a second header connected to a first end of each of the second flat tubes; and a third header connected to a second end of each of the first flat tubes and a second end of each of the second flat tubes.
- each of the second flat tubes is disposed not to overlap with each of the first flat tubes.
- the third header has: a first plate provided with a plurality of first insertion holes through which the second ends of the first flat tubes are respectively inserted, and a plurality of second insertion holes through which the second ends of the second flat tubes are respectively inserted; and a second plate provided with a plurality of communication spaces each communicating with a corresponding one of the first insertion holes and a corresponding one of the second insertion holes.
- a heat exchanger includes a first heat exchange portion and a second heat exchange portion arranged side by side in a first direction intersecting with a direction of gravity.
- the first heat exchange portion has: a plurality of first fins extending in the direction of gravity and arranged side by side in a second direction intersecting with the direction of gravity and the first direction; and a plurality of first flat tubes mounted to intersect with each of the first fins and arranged side by side in the direction of gravity.
- the second heat exchange portion has: a plurality of second fins extending in the direction of gravity and arranged side by side in the second direction; and a plurality of second flat tubes mounted to intersect with each of the second fins and arranged side by side in the direction of gravity.
- the heat exchanger further includes: a first header connected to a first end of each of the first flat tubes; a second header connected to a first end of each of the second flat tubes; and a third header connected to a second end of each of the first flat tubes and a second end of each of the second flat tubes, the third header being provided with a plurality of communication spaces each communicating with a corresponding one of the first flat tubes and a corresponding one of the second flat tubes.
- each of the second flat tubes is disposed not to overlap with each of the first flat tubes. At least one of the first flat tubes that is connected to one communication space of the communication spaces is located lower in the direction of gravity than at least one of the second flat tubes that is connected to the one communication space.
- the present disclosure can provide a heat exchanger improved in heat exchange performance as compared with the above-mentioned conventional heat exchanger, and a refrigeration cycle apparatus including the heat exchanger.
- a heat exchanger 100 includes a first heat exchange portion 11, a second heat exchange portion 12, a first header 13, a second header 14, and a third header (hereinafter, referred to as a bridging header) 15.
- each of first heat exchange portion 11 and second heat exchange portion 12 is provided so as to exchange heat between the refrigerant flowing in the X direction (the second direction) and air flowing in the Y direction.
- First heat exchange portion 11 and second heat exchange portion 12 are arranged side by side in the Y direction (the first direction).
- the upstream side in the ventilation direction will be simply referred to as a windward side while the downstream side in the ventilation direction will be simply referred to as a leeward side.
- First heat exchanging portion 11 is disposed on the windward side relative to second heat exchanging portion 12.
- first heat exchange portion 11 includes a plurality of first fins 1 and a plurality of first flat tubes 2.
- the plurality of first fins 1 extend in the Z direction and the Y direction, and are arranged side by side in the X direction.
- Each of first fins 1 is a plate fin.
- the plurality of first flat tubes 2 are mounted to intersect with each of the plurality of first fins 1, and are arranged side by side in the Z direction.
- the cross-sectional shape of each first flat tube 2 perpendicular to the X direction is a flat shape having a long-side direction and a short-side direction.
- the long-side direction of each first flat tube 2 corresponds to the Y direction.
- first heat exchange portion 11 heat is exchanged between: air flowing in the Y direction between first fins 1 adjacent to each other; and the refrigerant flowing in the X direction through each first flat tube 2.
- a plurality of flow paths are formed inside each first flat tube 2. The flow paths each extend in the axial direction (the X direction) of each first flat tube 2 and are arranged side by side in the long-side direction of each first flat tube 2.
- second heat exchange portion 12 includes a plurality of second fins 3 and a plurality of second flat tubes 4.
- the plurality of second fins 3 extend in the Z direction and the Y direction, and are arranged side by side in the X direction.
- Each second fin 3 is a plate fin.
- the plurality of second flat tubes 4 are mounted to intersect with each of the plurality of second fins 3 and are arranged side by side in the Z direction.
- the cross-sectional shape of each second flat tube 4 perpendicular to the X direction is a flat shape having a long-side direction and a short-side direction.
- second heat exchange portion 12 heat is exchanged between: air flowing in the Y direction between second fins 3 adjacent to each other; and the refrigerant flowing in the X direction through each second flat tube 4.
- a plurality of flow paths are formed inside each second flat tube 4. The flow paths each extend in the axial direction (the X direction) of each second flat tube 4 and are arranged side by side in the long-side direction of each second flat tube 4.
- each second fin 3 is spaced apart in the Y direction from each first fin 1.
- Each second fin 3 is disposed on the leeward side relative to each first fin 1.
- An end portion 3A located on the windward side of each second fin 3 is disposed on the leeward side relative to an end portion 1B located on the leeward side of each first fin 1.
- each second flat tube 4 is spaced apart in the Y direction from each first flat tube 2.
- Each second flat tube 4 is disposed on the leeward side relative to each first flat tube 2.
- An end portion located on the windward side of each second flat tube 4 is disposed on the leeward side relative to an end portion located on the leeward side of each first flat tube 2.
- each second fin 3 is disposed to overlap with each first fin 1 when viewed in the Y direction.
- Each second fin 3 is formed as a member separate from each first fin 1.
- each second flat tube 4 is disposed not to overlap with each first flat tube 2 when viewed in the Y direction.
- each first flat tube 2 is disposed between two second flat tubes 4 adjacent to each other in the Z direction.
- each second flat tube 4 is disposed between two first flat tubes 2 adjacent to each other in the Z direction.
- each first fin 1 has a continuous portion 1D disposed on one side (for example, on the windward side) in the Y direction and extending in the Z direction.
- Each first fin 1 is provided with a plurality of insertion holes 1C disposed on the other side (for example, on the leeward side) in the Y direction with respect to continuous portion 1D.
- each first flat tube 2 is inserted.
- Continuous portion 1D is located between an end portion 1A located on the windward side of first fin 1 and an end portion located on the windward side of each insertion hole 1C.
- Each insertion hole 1C is opened, for example, at end portion 1B located on the leeward side of first fin 1. Note that each insertion hole 1C may not be opened at end portion 1B located on the leeward side of first fin 1.
- each second fin 3 has a continuous portion 3D disposed on one side (for example, on the windward side) in the Y direction and extending in the Z direction.
- Each second fin 3 is provided with a plurality of insertion holes 3C disposed on the other side (for example, on the leeward side) in the Y direction with respect to continuous portion 3D.
- continuous portion 3D is located between end portion 3A located on the windward side of second fin 3 and the end portion located on the windward side of each insertion hole 3C.
- Each insertion hole 3C is opened, for example, at an end portion 3B located on the leeward side of second fin 3.
- Each insertion hole 3C may not be opened at end portion 3B located on the leeward side of second fin 3.
- first header 13 is connected to a first end of each first flat tube 2 in the Y direction.
- First header 13 allows merging of the refrigerant having flowed out of each first flat tube 2 or allows splitting of the refrigerant that is to flow into each first flat tube 2.
- Second header 14 is connected to the first end of each second flat tube 4 in the Y direction, and allows merging of the refrigerant having flowed out of each second flat tube 4 or allows splitting of the refrigerant that is to flow into each second flat tube 4.
- Second header 14 is disposed on the leeward side relative to first header 13.
- bridging header 15 is connected to the second end of each first flat tube 2 and the second end of each second flat tube 4. Bridging header 15 provides communication between each first flat tube 2 and each second flat tube 4 for refrigerant to flow therebetween.
- bridging header 15 is provided with: a plurality of first insertion holes 16 through which first flat tubes 2 are respectively inserted; a plurality of second insertion holes 17 through which second flat tubes 4 are respectively inserted; and a plurality of communication spaces 18 each communicating with a corresponding one of first insertion holes 16 and a corresponding one of second insertion holes 17.
- First insertion holes 16 are arranged side by side in the Z direction.
- Second insertion holes 17 are arranged side by side in the Z direction. Each second insertion hole 17 is spaced apart in the Y direction from each first insertion hole 16. Further, each second insertion hole 17 is spaced apart in the Z direction from each first insertion hole 16.
- each communication space 18 is provided to allow communication between one first insertion hole 16 and one second insertion hole 17 that is disposed adjacent to this one first insertion hole 16 in the Z direction and located above this one first insertion hole 16.
- each communication space 18 provides communication between one first flat tube 2 and one second flat tube 4 that is disposed adjacent to this one first flat tube 2 in the Z direction and located above this one first flat tube 2, for refrigerant to flow therebetween.
- bridging header 15 includes a first plate 15A, a second plate 15B, and a third plate 15C.
- First plate 15A, second plate 15B, and third plate 15C are stacked in the X direction.
- First plate 15A is disposed on the side close to first heat exchange portion 11 and second heat exchange portion 12 with respect to second plate 15B and third plate 15C in the X direction.
- Third plate 15C is disposed on the side opposite to first heat exchange portion 11 and second heat exchange portion 12 with respect to first plate 15A and second plate 15B in the X direction.
- Second plate 15B is sandwiched between first plate 15A and third plate 15C in the X direction.
- First plate 15A, second plate 15B, and third plate 15C are connected and fixed to each other in a water-tight manner.
- the materials forming first plate 15A, second plate 15B, and third plate 15C include aluminum (Al), for example.
- first plate 15A is provided with a plurality of through holes.
- the through holes provided in first plate 15A constitute first insertion holes 16 or second insertion holes 17.
- first insertion holes 16 and second insertion holes 17 are provided as through holes in first plate 15A.
- First insertion holes 16 and second insertion holes 17 each may be formed by any method and, for example, are formed by press working.
- First plate 15A serves as a connection plate connected to each first flat tube 2 and each second flat tube 4 in a water-tight manner.
- second plate 15B is provided with a plurality of through holes.
- the inner space of each through hole provided in second plate 15B provides communication space 18.
- each communication space 18 is an inner space of each of the plurality of through holes provided in second plate 15B.
- each through hole provided in second plate 15B is provided to overlap with the entirety of one first insertion hole 16 and one second insertion hole 17.
- the opening end of each through hole provided in second plate 15B is located outside each of the opening ends of each first insertion hole 16 and each second insertion hole 17 provided in first plate 15A.
- Each through hole provided in second plate 15B may be formed by any method and, for example, are formed by press working.
- Second plate 15B is a flow path plate providing communication space 18 as a refrigerant flow path between first flat tube 2 and second flat tube 4.
- one first flat tube 2 connected to one communication space 18 is located lower in the Z direction than one second flat tube 4 connected to this one communication space 18.
- the uppermost portion of one first flat tube 2 connected to one communication space 18 is located at the same height in the Z direction as the lowermost portion of one second flat tube 4 connected to this one communication space 18, or located lower than the lowermost portion.
- each through hole provided in second plate 15B has a pair of inclined surfaces facing each other in the Z direction and inclined with respect to the X direction and the Y direction.
- the pair of inclined surfaces is inclined gradually upward to the leeward side.
- the distance between the pair of inclined surfaces in the Z direction is larger than the width of each first insertion hole 16 in the Z direction and the width of each second insertion hole 17 in the Z direction.
- third plate 15C is disposed on the side opposite to each first insertion hole 16 and each second insertion hole 17 with respect to each communication space 18, and closes one end of each communication space 18 in the X direction.
- third plate 15C no through hole is formed in a region overlapping with communication space 18 when viewed in the X direction.
- Third plate 15C forms what is called an outer shell plate.
- first plate 15A is smaller in thickness than second plate 15B.
- Third plate 15C is smaller in thickness than second plate 15B.
- First plate 15A is larger in thickness than third plate 15C, for example.
- First flat tube 2 is fixed to first plate 15A, for example, by a brazing material. In this case, after first flat tube 2 is inserted into first insertion hole 16 and second flat tube 4 is inserted into second insertion hole 17, first flat tube 2 and second insertion hole 17 are fixed to first plate 15A by a brazing material. Then, second plate 15B and third plate 15C are fixed to first plate 15A by a brazing material. In this way, each first flat tube 2, each second flat tube 4, and bridging header 15 are connected and fixed to each other in a water-tight manner.
- each of second flat tubes 4 is disposed not to overlap with each of first flat tubes 2 when viewed in the Y direction.
- each second flat tube 4 disposed on the leeward side is not located in the dead water zone of each first flat tube 2 disposed on the windward side.
- the heat exchange performance of heat exchanger 100 is enhanced as compared with the heat exchange performance of the heat exchanger in which each first flat tube and each second flat tube are disposed at the same height in the vertical direction.
- bridging header 15 of heat exchanger 100 includes: first plate 15A provided with first insertion holes 16 through which the second ends of first flat tubes 2 are respectively inserted and second insertion holes 17 through which the second ends of second flat tubes 4 are respectively inserted; and second plate 15B provided with communication spaces 18 each communicating with a corresponding one of first insertion holes 16 and a corresponding one of second insertion holes 17.
- each of first plate 15A and second plate 15B formed of separate plate members is provided with: first insertion holes 16 and second insertion holes 17 through which first flat tubes 2 and second flat tubes 4 are respectively inserted; and communication spaces 18 each providing communication between each first flat tube 2 and each second flat tube 4 for refrigerant to flow therebetween.
- first insertion holes 16 and second insertion holes 17 through which first flat tubes 2 and second flat tubes 4 are respectively inserted
- communication spaces 18 each providing communication between each first flat tube 2 and each second flat tube 4 for refrigerant to flow therebetween.
- each second flat tube 4 is disposed not to overlap with each first flat tube 2 when viewed in the Y direction, the insertion margins for each first insertion hole 16 and each second insertion hole 17 can be readily ensured and the volume of each communication space 18 can be readily increased, as compared with the bridging header in which each first insertion hole, each second insertion hole, and each communication space are provided in one member.
- heat exchanger 100 including bridging header 15 described above the heat exchange performance can be readily enhanced as compared with the heat exchanger including the bridging header in which each first insertion hole, each second insertion hole, and each communication space are provided in one member.
- first plate 15A is smaller in thickness than second plate 15B. This makes it possible to simultaneously increase the volume of each communication space 18 and the insertion margins for each first insertion hole 16 and each second insertion hole 17, as compared with the case in which the thickness of first plate 15A is equal to or larger than the thickness of second plate 15B.
- one first flat tube 2 connected to one communication space 18 is located lower in the Z direction than one second flat tube 4 connected to this one communication space 18.
- Each communication space 18 only needs to provide communication between at least one first flat tube 2 and at least one second flat tube 4 for refrigerant to flow therebetween.
- Each communication space 18 may be formed, for example, to provide communication between the plurality of first flat tubes 2 and the plurality of second flat tubes 4 for refrigerant to flow therebetween.
- Second plate 15B may be provided with a plurality of recesses in place of the plurality of through holes.
- each communication space 18 is formed of an inner space of a recess provided in second plate 15B.
- Bridging header 15 may not include third plate 15C and may be formed as a multilayer body of first plate 15A and second plate 15B.
- a plurality of recesses 15D may be provided in the surface of third plate 15C on the side close to second plate 15B.
- Each of the plurality of recesses 15D is provided to overlap with each of the through holes provided in second plate 15B when viewed in the X direction.
- the region of third plate 15C where no recess 15D is provided is formed to overlap with the region of second plate 15B where no through hole is provided when viewed in the X direction.
- the inner space of each recess 15D provided in third plate 15C communicates with the inner space of each through hole provided in second plate 15B, and each communication space 18 is formed of the above-mentioned two inner spaces.
- second plate 15B may be configured as a multilayer body formed of a plurality of plates. As long as the entire thickness of second plate 15B is larger than the thickness of first plate 15A, the thickness of each plate forming second plate 15B may be equal to or smaller than the thickness of first plate 15A.
- second plate 15B can be enhanced without impairing the formability of second plate 15B as compared with the case in which second plate 15B is formed as one plate.
- the plurality of first insertion holes 16, the plurality of second insertion holes 17, and the plurality of communication spaces 18 may be provided in one member.
- Bridging header 15 as described above may be formed by laser processing, for example.
- a heat exchanger according to the second embodiment has basically the same configuration and exhibits basically the same effect as those of heat exchanger 100 according to the first embodiment, but is different from heat exchanger 100 in that each first flat tube 2 and each second flat tube 4 have upper surfaces 2A and 4A, respectively, inclined with respect to the horizontal direction and that each communication space 18 extends along upper surfaces 2A and 4A, as shown in Figs. 11 to 13 .
- the angle formed by upper surface 2A with respect to the horizontal direction is 5 degrees or more and 45 degrees or less, for example.
- the angle formed by upper surface 4A with respect to the horizontal direction is 5 degrees or more and 45 degrees or less, for example.
- the angle formed by upper surface 2A of first flat tube 2 with respect to the horizontal direction is, for example, equal to the angle formed by upper surface 4A of second flat tube 4 with respect to the horizontal direction.
- Upper surface 2A of one first flat tube 2 connected to one communication space 18 is, for example, disposed to be flush with upper surface 4A of one second flat tube 4 connected to this one communication space 18.
- each first flat tube 2 and each second flat tube 4 have upper surfaces 2A and 4A, respectively, inclined with respect to the horizontal direction, and each communication space 18 extends along upper surfaces 2A and 4A, and thereby, imbalance in distribution of the refrigerant from communication space 18 to the flow paths of first flat tubes 2 is suppressed.
- a heat exchanger 101 according to the third embodiment has basically the same configuration and exhibits basically the same effect as those of heat exchanger 100 according to the first embodiment, but is different from heat exchanger 100 in that bridging header 15 is divided into a plurality of sections as shown in Figs. 14 to 16 .
- Bridging header 15 is divided into a first bridging header 19 disposed above in the Z direction and a second bridging header 20 disposed below in the Z direction.
- the plurality of first flat tubes 2 are divided into first flat tubes 2 of a first group disposed above and first flat tubes 2 of a second group disposed below first flat tubes 2 of the first group.
- the plurality of second flat tubes 4 are divided into second flat tubes 4 of a first group disposed above and second flat tubes 4 of a second group disposed below second flat tubes 4 of the first group.
- First bridging header 19 is connected to each of the second ends of first flat tubes 2 of the first group and each of the second ends of second flat tubes 4 of the first group, and allows merging of the refrigerant having flowed out of each of second flat tubes 4 of the first group and also allows splitting of the refrigerant that is to flow into each of first flat tubes 2 of the first group.
- Second bridging header 20 is connected to each of the second ends of first flat tubes 2 of the second group and each of the second ends of second flat tubes 4 of the second group, and allows merging of the refrigerant having flowed out of each of second flat tubes 4 of the second group and also allows splitting of the refrigerant that is to flow into each of first flat tubes 2 of the second group.
- First bridging header 19 includes a first plate 19A, a second plate 19B, and a third plate 19C.
- First plate 19A, second plate 19B, and third plate 19C have the same configurations as those of first plate 15A, second plate 15B, and third plate 15C described above.
- Second bridging header 20 includes a first plate 20A, a second plate 20B, and a third plate 20C.
- First plate 20A, second plate 20B, and third plate 20C have the same configurations as those of first plate 15A, second plate 15B, and third plate 15C described above.
- First plates 19A and 20A are configured as plate members different from each other, for example.
- Second plates 19B and 20B are configured as plate members different from each other, for example.
- Third plates 19C and 20C are configured as plate members different from each other, for example. Note that first plates 19A and 20A may be configured as one plate member. Second plates 19B and 20B may be configured as one plate member. Third plates 19C and 20C may be configured as one plate member, for example.
- each through hole provided in each of first plates 19A and 20A constitutes a first insertion hole 21 or a second insertion hole 22.
- each first insertion hole 21 and each second insertion hole 22 are provided as a through hole in each of first plates 19A and 20A.
- second plates 19B and 20B each are provided with a plurality of through holes.
- the inner space of each through hole provided in each of second plates 19B and 20B provides a communication space 23.
- Each communication space 23 is an inner space of each of the plurality of through holes provided in each of second plates 19B and 20B.
- each through hole provided in each of second plates 19B and 20B is formed to overlap with the entirety of one first insertion hole 21 and one second insertion hole 22.
- the opening end of each through hole provided in each of second plates 19B and 20B is located outside each of the opening ends of each first insertion hole 21 and each second insertion hole 22 provided in each of first plates 19A and 20A.
- one first flat tube 2 connected to one communication space 23 is located lower in the Z direction than one second flat tube 4 connected to this one communication space 23.
- the uppermost portion of one first flat tube 2 connected to one communication space 18 is disposed at the same height in the Z direction as the lowermost portion of one second flat tube 4 connected to this one communication space 18, or located lower than the lowermost portion.
- each through hole provided in each of second plates 19B and 20B has a pair of inclined surfaces facing each other in the Z direction and inclined with respect to the X direction and the Y direction.
- the pair of inclined surfaces is inclined gradually upward to the leeward side.
- the distance between the pair of inclined surfaces in the Z direction is larger than the width of each first insertion hole 21 in the Z direction and the width of each second insertion hole 22 in the Z direction.
- third plates 19C and 20C each are disposed on the side opposite to each first insertion hole 21 and each second insertion hole 22 with respect to each communication space 23, and close one end of each communication space 23 in the X direction.
- no through hole is provided in a region overlapping with communication space 23 when viewed in the X direction.
- a refrigeration cycle apparatus 200 according to the fourth embodiment includes any one of the heat exchangers according to the first to third embodiments as an evaporator.
- Refrigeration cycle apparatus 200 mainly includes a compressor 111, heat exchangers 100, 101, a heat exchanger 113, and an expansion valve 114.
- second header 14 serves as an inflow portion of refrigerant
- first header 13 serves as an outflow portion of refrigerant.
- the refrigerant flows through second header 14, second heat exchange portion 12, bridging header 15, first heat exchange portion 11, and first header 13 in this order.
- refrigeration cycle apparatus 200 may further include a four-way valve 112 for switching the flow direction of the refrigerant.
- Four-way valve 112 switches the operation mode between an operation mode in which heat exchanger 100, 101 serves as an evaporator and an operation mode in which heat exchanger 100, 101 serves as a condenser.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
Description
- The present disclosure relates to a heat exchanger and a refrigeration cycle apparatus.
-
Japanese Patent Laying-Open No. 2015-113983 - PTL 1:
Japanese Patent Laying-Open No. 2015-113983 - In the above-mentioned heat exchanger, since each of the first flat tubes and each of the second flat tubes are disposed at the same height in the vertical direction, one of each first flat tube and each second flat tube is located downstream of the other in the ventilation direction. In other words, in the ventilation direction, the flat tubes disposed on the downstream side are located in the dead water zone formed behind the flat tubes disposed on the upstream side. As a result, in the above-mentioned heat exchanger, the heat exchange performance of the heat exchange element disposed downstream in the ventilation direction cannot be sufficiently exhibited.
- A main object of the present disclosure is to provide a heat exchanger enhanced in heat exchange performance as compared with the above-mentioned conventional heat exchanger, and a refrigeration cycle apparatus including the heat exchanger.
- A heat exchanger according to a first aspect of the present disclosure includes: a first heat exchange portion and a second heat exchange portion arranged side by side in a first direction intersecting with a direction of gravity. The first heat exchange portion has: a plurality of first fins extending in the direction of gravity and arranged side by side in a second direction intersecting with the direction of gravity and the first direction; and a plurality of first flat tubes mounted to intersect with each of the first fins and arranged side by side in the direction of gravity. The second heat exchange portion has: a plurality of second fins extending in the direction of gravity and arranged side by side in the second direction; and a plurality of second flat tubes mounted to intersect with each of the second fins and arranged side by side in the direction of gravity. The heat exchanger further includes: a first header connected to a first end of each of the first flat tubes; a second header connected to a first end of each of the second flat tubes; and a third header connected to a second end of each of the first flat tubes and a second end of each of the second flat tubes. When viewed in the first direction, each of the second flat tubes is disposed not to overlap with each of the first flat tubes. The third header has: a first plate provided with a plurality of first insertion holes through which the second ends of the first flat tubes are respectively inserted, and a plurality of second insertion holes through which the second ends of the second flat tubes are respectively inserted; and a second plate provided with a plurality of communication spaces each communicating with a corresponding one of the first insertion holes and a corresponding one of the second insertion holes.
- A heat exchanger according to a second aspect of the present disclosure includes a first heat exchange portion and a second heat exchange portion arranged side by side in a first direction intersecting with a direction of gravity. The first heat exchange portion has: a plurality of first fins extending in the direction of gravity and arranged side by side in a second direction intersecting with the direction of gravity and the first direction; and a plurality of first flat tubes mounted to intersect with each of the first fins and arranged side by side in the direction of gravity. The second heat exchange portion has: a plurality of second fins extending in the direction of gravity and arranged side by side in the second direction; and a plurality of second flat tubes mounted to intersect with each of the second fins and arranged side by side in the direction of gravity. The heat exchanger further includes: a first header connected to a first end of each of the first flat tubes; a second header connected to a first end of each of the second flat tubes; and a third header connected to a second end of each of the first flat tubes and a second end of each of the second flat tubes, the third header being provided with a plurality of communication spaces each communicating with a corresponding one of the first flat tubes and a corresponding one of the second flat tubes. When viewed in the first direction, each of the second flat tubes is disposed not to overlap with each of the first flat tubes. At least one of the first flat tubes that is connected to one communication space of the communication spaces is located lower in the direction of gravity than at least one of the second flat tubes that is connected to the one communication space.
- The present disclosure can provide a heat exchanger improved in heat exchange performance as compared with the above-mentioned conventional heat exchanger, and a refrigeration cycle apparatus including the heat exchanger.
-
-
Fig. 1 is a top view of a heat exchanger according to a first embodiment. -
Fig. 2 is a front view of the heat exchanger shown inFig. 1 . -
Fig. 3 is a side view of the heat exchanger shown inFig. 1 . -
Fig. 4 is a partial cross-sectional view for illustrating configurations of a first fin, a first flat tube, a second fin, and a second flat tube in the heat exchanger shown inFig. 1 . -
Fig. 5 is a diagram for illustrating a first plate of a bridging header shown inFig. 1 . -
Fig. 6 is a diagram for illustrating a second plate of the bridging header shown inFig. 1 . -
Fig. 7 is a diagram for illustrating a third plate of the bridging header shown inFig. 1 . -
Fig. 8 is an exploded perspective view for illustrating a connection relation among the first plate, the second plate, and the third plate of the bridging header shown inFig. 1 . -
Fig. 9 is a partial cross-sectional view taken along a line indicated by an arrow IX-IX inFig. 1 . -
Fig. 10 is a partial cross-sectional view showing a modification of the first plate, the second plate, and the third plate shown inFig. 9 . -
Fig. 11 is a partial cross-sectional view for illustrating configurations of a first fin, a first flat tube, a second fin, and a second flat tube in a heat exchanger according to a second embodiment. -
Fig. 12 is a diagram for illustrating a first plate of a bridging header in the heat exchanger according to the second embodiment. -
Fig. 13 is a diagram for illustrating a second plate of the heat exchanger according to the second embodiment. -
Fig. 14 is a top view of a heat exchanger according to a third embodiment. -
Fig. 15 is a front view of the heat exchanger shown inFig. 14 . -
Fig. 16 is a side view of the heat exchanger shown inFig. 14 . -
Fig. 17 is a diagram for illustrating a first plate of a bridging header shown inFig. 14 . -
Fig. 18 is a diagram for illustrating a second plate of the bridging header shown inFig. 14 . -
Fig. 19 is a diagram for illustrating a third plate of the bridging header shown inFig. 14 . - The following describes embodiments as examples of a heat exchanger according to the present disclosure with reference to the accompanying drawings. In the accompanying drawings, the same or corresponding portions are denoted by the same reference characters, and the description thereof will not be repeated. Further, in each of the figures, for convenience of explanation, an X direction, a Y direction, and a Z direction orthogonal to each other are introduced. The X direction and the Y direction corresponds to the horizontal direction while the Z direction corresponds to the direction of gravity.
- As shown in
Figs. 1 to 3 , aheat exchanger 100 according to the first embodiment includes a firstheat exchange portion 11, a secondheat exchange portion 12, afirst header 13, asecond header 14, and a third header (hereinafter, referred to as a bridging header) 15. - As shown in
Figs. 1, 2 , and4 , each of firstheat exchange portion 11 and secondheat exchange portion 12 is provided so as to exchange heat between the refrigerant flowing in the X direction (the second direction) and air flowing in the Y direction. Firstheat exchange portion 11 and secondheat exchange portion 12 are arranged side by side in the Y direction (the first direction). In the following description, in the Y direction, the upstream side in the ventilation direction will be simply referred to as a windward side while the downstream side in the ventilation direction will be simply referred to as a leeward side. Firstheat exchanging portion 11 is disposed on the windward side relative to secondheat exchanging portion 12. - As shown in
Figs. 1, 2 , and4 , firstheat exchange portion 11 includes a plurality offirst fins 1 and a plurality of firstflat tubes 2. The plurality offirst fins 1 extend in the Z direction and the Y direction, and are arranged side by side in the X direction. Each offirst fins 1 is a plate fin. The plurality of firstflat tubes 2 are mounted to intersect with each of the plurality offirst fins 1, and are arranged side by side in the Z direction. The cross-sectional shape of each firstflat tube 2 perpendicular to the X direction is a flat shape having a long-side direction and a short-side direction. The long-side direction of each firstflat tube 2 corresponds to the Y direction. In firstheat exchange portion 11, heat is exchanged between: air flowing in the Y direction betweenfirst fins 1 adjacent to each other; and the refrigerant flowing in the X direction through each firstflat tube 2. A plurality of flow paths are formed inside each firstflat tube 2. The flow paths each extend in the axial direction (the X direction) of each firstflat tube 2 and are arranged side by side in the long-side direction of each firstflat tube 2. - As shown in
Figs. 1, 2 , and4 , secondheat exchange portion 12 includes a plurality ofsecond fins 3 and a plurality of secondflat tubes 4. The plurality ofsecond fins 3 extend in the Z direction and the Y direction, and are arranged side by side in the X direction. Eachsecond fin 3 is a plate fin. The plurality of secondflat tubes 4 are mounted to intersect with each of the plurality ofsecond fins 3 and are arranged side by side in the Z direction. The cross-sectional shape of each secondflat tube 4 perpendicular to the X direction is a flat shape having a long-side direction and a short-side direction. In secondheat exchange portion 12, heat is exchanged between: air flowing in the Y direction betweensecond fins 3 adjacent to each other; and the refrigerant flowing in the X direction through each secondflat tube 4. A plurality of flow paths are formed inside each secondflat tube 4. The flow paths each extend in the axial direction (the X direction) of each secondflat tube 4 and are arranged side by side in the long-side direction of each secondflat tube 4. - As shown in
Figs. 1 and4 , eachsecond fin 3 is spaced apart in the Y direction from eachfirst fin 1. Eachsecond fin 3 is disposed on the leeward side relative to eachfirst fin 1. Anend portion 3A located on the windward side of eachsecond fin 3 is disposed on the leeward side relative to anend portion 1B located on the leeward side of eachfirst fin 1. - As shown in
Figs. 1 and4 , each secondflat tube 4 is spaced apart in the Y direction from each firstflat tube 2. Each secondflat tube 4 is disposed on the leeward side relative to each firstflat tube 2. An end portion located on the windward side of each secondflat tube 4 is disposed on the leeward side relative to an end portion located on the leeward side of each firstflat tube 2. - As shown in
Fig. 2 , eachsecond fin 3 is disposed to overlap with eachfirst fin 1 when viewed in the Y direction. Eachsecond fin 3 is formed as a member separate from eachfirst fin 1. - As shown in
Figs. 2 and4 , each secondflat tube 4 is disposed not to overlap with each firstflat tube 2 when viewed in the Y direction. When viewed in the Y direction, each firstflat tube 2 is disposed between two secondflat tubes 4 adjacent to each other in the Z direction. When viewed in the Y direction, each secondflat tube 4 is disposed between two firstflat tubes 2 adjacent to each other in the Z direction. - As shown in
Fig. 4 , eachfirst fin 1 has acontinuous portion 1D disposed on one side (for example, on the windward side) in the Y direction and extending in the Z direction. Eachfirst fin 1 is provided with a plurality of insertion holes 1C disposed on the other side (for example, on the leeward side) in the Y direction with respect tocontinuous portion 1D. Through each insertion hole 1C, each firstflat tube 2 is inserted.Continuous portion 1D is located between anend portion 1A located on the windward side offirst fin 1 and an end portion located on the windward side of each insertion hole 1C. Each insertion hole 1C is opened, for example, atend portion 1B located on the leeward side offirst fin 1. Note that each insertion hole 1C may not be opened atend portion 1B located on the leeward side offirst fin 1. - As shown in
Fig. 4 , eachsecond fin 3 has acontinuous portion 3D disposed on one side (for example, on the windward side) in the Y direction and extending in the Z direction. Eachsecond fin 3 is provided with a plurality ofinsertion holes 3C disposed on the other side (for example, on the leeward side) in the Y direction with respect tocontinuous portion 3D. Through eachinsertion hole 3C, each secondflat tube 4 is inserted.Continuous portion 3D is located betweenend portion 3A located on the windward side ofsecond fin 3 and the end portion located on the windward side of eachinsertion hole 3C. Eachinsertion hole 3C is opened, for example, at anend portion 3B located on the leeward side ofsecond fin 3. Eachinsertion hole 3C may not be opened atend portion 3B located on the leeward side ofsecond fin 3. - As shown in
Figs. 1 and 2 ,first header 13 is connected to a first end of each firstflat tube 2 in the Y direction.First header 13 allows merging of the refrigerant having flowed out of each firstflat tube 2 or allows splitting of the refrigerant that is to flow into each firstflat tube 2.Second header 14 is connected to the first end of each secondflat tube 4 in the Y direction, and allows merging of the refrigerant having flowed out of each secondflat tube 4 or allows splitting of the refrigerant that is to flow into each secondflat tube 4.Second header 14 is disposed on the leeward side relative tofirst header 13. - As shown in
Figs. 1 to 3 , bridgingheader 15 is connected to the second end of each firstflat tube 2 and the second end of each secondflat tube 4. Bridgingheader 15 provides communication between each firstflat tube 2 and each secondflat tube 4 for refrigerant to flow therebetween. - As shown in
Fig. 3 , bridgingheader 15 is provided with: a plurality of first insertion holes 16 through which firstflat tubes 2 are respectively inserted; a plurality of second insertion holes 17 through which secondflat tubes 4 are respectively inserted; and a plurality ofcommunication spaces 18 each communicating with a corresponding one of first insertion holes 16 and a corresponding one of second insertion holes 17. First insertion holes 16 are arranged side by side in the Z direction. Second insertion holes 17 are arranged side by side in the Z direction. Eachsecond insertion hole 17 is spaced apart in the Y direction from eachfirst insertion hole 16. Further, eachsecond insertion hole 17 is spaced apart in the Z direction from eachfirst insertion hole 16. - As shown in
Figs. 3 and6 , eachcommunication space 18 is provided to allow communication between onefirst insertion hole 16 and onesecond insertion hole 17 that is disposed adjacent to this onefirst insertion hole 16 in the Z direction and located above this onefirst insertion hole 16. In other words, eachcommunication space 18 provides communication between one firstflat tube 2 and one secondflat tube 4 that is disposed adjacent to this one firstflat tube 2 in the Z direction and located above this one firstflat tube 2, for refrigerant to flow therebetween. - As shown in
Fig. 3 , bridgingheader 15 includes afirst plate 15A, asecond plate 15B, and athird plate 15C.First plate 15A,second plate 15B, andthird plate 15C are stacked in the X direction.First plate 15A is disposed on the side close to firstheat exchange portion 11 and secondheat exchange portion 12 with respect tosecond plate 15B andthird plate 15C in the X direction.Third plate 15C is disposed on the side opposite to firstheat exchange portion 11 and secondheat exchange portion 12 with respect tofirst plate 15A andsecond plate 15B in the X direction.Second plate 15B is sandwiched betweenfirst plate 15A andthird plate 15C in the X direction.First plate 15A,second plate 15B, andthird plate 15C are connected and fixed to each other in a water-tight manner. The materials formingfirst plate 15A,second plate 15B, andthird plate 15C include aluminum (Al), for example. - As shown in
Figs. 3 ,5 , and8 ,first plate 15A is provided with a plurality of through holes. The through holes provided infirst plate 15A constitute first insertion holes 16 or second insertion holes 17. In other words, first insertion holes 16 and second insertion holes 17 are provided as through holes infirst plate 15A. First insertion holes 16 and second insertion holes 17 each may be formed by any method and, for example, are formed by press working.First plate 15A serves as a connection plate connected to each firstflat tube 2 and each secondflat tube 4 in a water-tight manner. - As shown in
Figs. 3 ,6 , and8 ,second plate 15B is provided with a plurality of through holes. The inner space of each through hole provided insecond plate 15B providescommunication space 18. In other words, eachcommunication space 18 is an inner space of each of the plurality of through holes provided insecond plate 15B. When viewed in the X direction, each through hole provided insecond plate 15B is provided to overlap with the entirety of onefirst insertion hole 16 and onesecond insertion hole 17. When viewed in the X direction, the opening end of each through hole provided insecond plate 15B is located outside each of the opening ends of eachfirst insertion hole 16 and eachsecond insertion hole 17 provided infirst plate 15A. Each through hole provided insecond plate 15B may be formed by any method and, for example, are formed by press working.Second plate 15B is a flow path plate providingcommunication space 18 as a refrigerant flow path between firstflat tube 2 and secondflat tube 4. - As shown in
Figs. 3 and6 , one firstflat tube 2 connected to onecommunication space 18 is located lower in the Z direction than one secondflat tube 4 connected to this onecommunication space 18. Specifically, the uppermost portion of one firstflat tube 2 connected to onecommunication space 18 is located at the same height in the Z direction as the lowermost portion of one secondflat tube 4 connected to this onecommunication space 18, or located lower than the lowermost portion. - The inner circumferential surface of each through hole provided in
second plate 15B has a pair of inclined surfaces facing each other in the Z direction and inclined with respect to the X direction and the Y direction. The pair of inclined surfaces is inclined gradually upward to the leeward side. The distance between the pair of inclined surfaces in the Z direction is larger than the width of eachfirst insertion hole 16 in the Z direction and the width of eachsecond insertion hole 17 in the Z direction. - As shown in
Figs. 3 ,7 , and8 ,third plate 15C is disposed on the side opposite to eachfirst insertion hole 16 and eachsecond insertion hole 17 with respect to eachcommunication space 18, and closes one end of eachcommunication space 18 in the X direction. Inthird plate 15C, no through hole is formed in a region overlapping withcommunication space 18 when viewed in the X direction.Third plate 15C forms what is called an outer shell plate. - As shown in
Fig. 9 ,first plate 15A is smaller in thickness thansecond plate 15B.Third plate 15C is smaller in thickness thansecond plate 15B.First plate 15A is larger in thickness thanthird plate 15C, for example. Firstflat tube 2 is fixed tofirst plate 15A, for example, by a brazing material. In this case, after firstflat tube 2 is inserted intofirst insertion hole 16 and secondflat tube 4 is inserted intosecond insertion hole 17, firstflat tube 2 andsecond insertion hole 17 are fixed tofirst plate 15A by a brazing material. Then,second plate 15B andthird plate 15C are fixed tofirst plate 15A by a brazing material. In this way, each firstflat tube 2, each secondflat tube 4, and bridgingheader 15 are connected and fixed to each other in a water-tight manner. - In
heat exchanger 100, each of secondflat tubes 4 is disposed not to overlap with each of firstflat tubes 2 when viewed in the Y direction. In other words, inheat exchanger 100, each secondflat tube 4 disposed on the leeward side is not located in the dead water zone of each firstflat tube 2 disposed on the windward side. Thus, the heat exchange performance ofheat exchanger 100 is enhanced as compared with the heat exchange performance of the heat exchanger in which each first flat tube and each second flat tube are disposed at the same height in the vertical direction. - Further, bridging
header 15 ofheat exchanger 100 includes:first plate 15A provided with first insertion holes 16 through which the second ends of firstflat tubes 2 are respectively inserted and second insertion holes 17 through which the second ends of secondflat tubes 4 are respectively inserted; andsecond plate 15B provided withcommunication spaces 18 each communicating with a corresponding one of first insertion holes 16 and a corresponding one of second insertion holes 17. - In bridging
header 15 as described above, each offirst plate 15A andsecond plate 15B formed of separate plate members is provided with: first insertion holes 16 and second insertion holes 17 through which firstflat tubes 2 and secondflat tubes 4 are respectively inserted; andcommunication spaces 18 each providing communication between each firstflat tube 2 and each secondflat tube 4 for refrigerant to flow therebetween. Thus, the degree of freedom for the shapes of eachfirst insertion hole 16, eachsecond insertion hole 17, and eachcommunication space 18 in bridgingheader 15 is enhanced as compared with the degree of freedom for the shape of the bridging header in which each first insertion hole, each second insertion hole, and each communication space are formed in one member. As a result, in bridgingheader 15, even when each secondflat tube 4 is disposed not to overlap with each firstflat tube 2 when viewed in the Y direction, the insertion margins for eachfirst insertion hole 16 and eachsecond insertion hole 17 can be readily ensured and the volume of eachcommunication space 18 can be readily increased, as compared with the bridging header in which each first insertion hole, each second insertion hole, and each communication space are provided in one member. - As a result, in
heat exchanger 100 including bridgingheader 15 described above, the heat exchange performance can be readily enhanced as compared with the heat exchanger including the bridging header in which each first insertion hole, each second insertion hole, and each communication space are provided in one member. - In
heat exchanger 100,first plate 15A is smaller in thickness thansecond plate 15B. This makes it possible to simultaneously increase the volume of eachcommunication space 18 and the insertion margins for eachfirst insertion hole 16 and eachsecond insertion hole 17, as compared with the case in which the thickness offirst plate 15A is equal to or larger than the thickness ofsecond plate 15B. - In
heat exchanger 100, one firstflat tube 2 connected to onecommunication space 18 is located lower in the Z direction than one secondflat tube 4 connected to this onecommunication space 18. - In this way, when refrigerant flows from second
flat tube 4 to firstflat tube 2 throughcommunication space 18, gravity acts on this refrigerant in the flow direction of the refrigerant. Insuch heat exchanger 100, as compared with the heat exchanger in which each first flat tube and each second flat tube are disposed at the same height in the vertical direction, the pressure loss of the gas-liquid two-phase refrigerant having flowed out of secondflat tube 4 is reduced, so that the heat exchange performance is enhanced. - Each
communication space 18 only needs to provide communication between at least one firstflat tube 2 and at least one secondflat tube 4 for refrigerant to flow therebetween. Eachcommunication space 18 may be formed, for example, to provide communication between the plurality of firstflat tubes 2 and the plurality of secondflat tubes 4 for refrigerant to flow therebetween. -
Second plate 15B may be provided with a plurality of recesses in place of the plurality of through holes. In this case, eachcommunication space 18 is formed of an inner space of a recess provided insecond plate 15B. Bridgingheader 15 may not includethird plate 15C and may be formed as a multilayer body offirst plate 15A andsecond plate 15B. - As shown in
Fig. 10 , a plurality ofrecesses 15D may be provided in the surface ofthird plate 15C on the side close tosecond plate 15B. Each of the plurality ofrecesses 15D is provided to overlap with each of the through holes provided insecond plate 15B when viewed in the X direction. The region ofthird plate 15C where norecess 15D is provided is formed to overlap with the region ofsecond plate 15B where no through hole is provided when viewed in the X direction. In this case, the inner space of eachrecess 15D provided inthird plate 15C communicates with the inner space of each through hole provided insecond plate 15B, and eachcommunication space 18 is formed of the above-mentioned two inner spaces. - In bridging
header 15,second plate 15B may be configured as a multilayer body formed of a plurality of plates. As long as the entire thickness ofsecond plate 15B is larger than the thickness offirst plate 15A, the thickness of each plate formingsecond plate 15B may be equal to or smaller than the thickness offirst plate 15A. - In this way, the pressure resistance of
second plate 15B can be enhanced without impairing the formability ofsecond plate 15B as compared with the case in whichsecond plate 15B is formed as one plate. - Further, in bridging
header 15, the plurality of first insertion holes 16, the plurality of second insertion holes 17, and the plurality ofcommunication spaces 18 may be provided in one member. Bridgingheader 15 as described above may be formed by laser processing, for example. - A heat exchanger according to the second embodiment has basically the same configuration and exhibits basically the same effect as those of
heat exchanger 100 according to the first embodiment, but is different fromheat exchanger 100 in that each firstflat tube 2 and each secondflat tube 4 haveupper surfaces communication space 18 extends alongupper surfaces Figs. 11 to 13 . - The angle formed by
upper surface 2A with respect to the horizontal direction is 5 degrees or more and 45 degrees or less, for example. The angle formed byupper surface 4A with respect to the horizontal direction is 5 degrees or more and 45 degrees or less, for example. The angle formed byupper surface 2A of firstflat tube 2 with respect to the horizontal direction is, for example, equal to the angle formed byupper surface 4A of secondflat tube 4 with respect to the horizontal direction.Upper surface 2A of one firstflat tube 2 connected to onecommunication space 18 is, for example, disposed to be flush withupper surface 4A of one secondflat tube 4 connected to this onecommunication space 18. - In the heat exchanger according to the second embodiment, each first
flat tube 2 and each secondflat tube 4 haveupper surfaces communication space 18 extends alongupper surfaces communication space 18 to the flow paths of firstflat tubes 2 is suppressed. - Note that modifications similar to those of the heat exchanger according to the first embodiment are allowable also in the heat exchanger according to the second embodiment.
- A heat exchanger 101 according to the third embodiment has basically the same configuration and exhibits basically the same effect as those of
heat exchanger 100 according to the first embodiment, but is different fromheat exchanger 100 in that bridgingheader 15 is divided into a plurality of sections as shown inFigs. 14 to 16 . - Bridging
header 15 is divided into afirst bridging header 19 disposed above in the Z direction and asecond bridging header 20 disposed below in the Z direction. The plurality of firstflat tubes 2 are divided into firstflat tubes 2 of a first group disposed above and firstflat tubes 2 of a second group disposed below firstflat tubes 2 of the first group. The plurality of secondflat tubes 4 are divided into secondflat tubes 4 of a first group disposed above and secondflat tubes 4 of a second group disposed below secondflat tubes 4 of the first group. - First bridging
header 19 is connected to each of the second ends of firstflat tubes 2 of the first group and each of the second ends of secondflat tubes 4 of the first group, and allows merging of the refrigerant having flowed out of each of secondflat tubes 4 of the first group and also allows splitting of the refrigerant that is to flow into each of firstflat tubes 2 of the first group. -
Second bridging header 20 is connected to each of the second ends of firstflat tubes 2 of the second group and each of the second ends of secondflat tubes 4 of the second group, and allows merging of the refrigerant having flowed out of each of secondflat tubes 4 of the second group and also allows splitting of the refrigerant that is to flow into each of firstflat tubes 2 of the second group. - First bridging
header 19 includes afirst plate 19A, asecond plate 19B, and athird plate 19C.First plate 19A,second plate 19B, andthird plate 19C have the same configurations as those offirst plate 15A,second plate 15B, andthird plate 15C described above. -
Second bridging header 20 includes afirst plate 20A, asecond plate 20B, and a third plate 20C.First plate 20A,second plate 20B, and third plate 20C have the same configurations as those offirst plate 15A,second plate 15B, andthird plate 15C described above. -
First plates Second plates Third plates 19C and 20C are configured as plate members different from each other, for example. Note thatfirst plates Second plates Third plates 19C and 20C may be configured as one plate member, for example. - As shown in
Fig. 16 , a plurality of through holes are provided in each offirst plates first plates first insertion hole 21 or asecond insertion hole 22. In other words, eachfirst insertion hole 21 and eachsecond insertion hole 22 are provided as a through hole in each offirst plates - As shown in
Fig. 17 ,second plates second plates communication space 23. Eachcommunication space 23 is an inner space of each of the plurality of through holes provided in each ofsecond plates second plates first insertion hole 21 and onesecond insertion hole 22. When viewed in the X direction, the opening end of each through hole provided in each ofsecond plates first insertion hole 21 and eachsecond insertion hole 22 provided in each offirst plates - As shown in
Figs. 16 and18 , one firstflat tube 2 connected to onecommunication space 23 is located lower in the Z direction than one secondflat tube 4 connected to this onecommunication space 23. Specifically, the uppermost portion of one firstflat tube 2 connected to onecommunication space 18 is disposed at the same height in the Z direction as the lowermost portion of one secondflat tube 4 connected to this onecommunication space 18, or located lower than the lowermost portion. - The inner circumferential surface of each through hole provided in each of
second plates first insertion hole 21 in the Z direction and the width of eachsecond insertion hole 22 in the Z direction. - As shown in
Figs. 15 and19 ,third plates 19C and 20C each are disposed on the side opposite to eachfirst insertion hole 21 and eachsecond insertion hole 22 with respect to eachcommunication space 23, and close one end of eachcommunication space 23 in the X direction. In each ofthird plates 19C and 20C, no through hole is provided in a region overlapping withcommunication space 23 when viewed in the X direction. - Note that modifications similar to those of the heat exchanger according to the first embodiment are allowable also in heat exchanger 101 according to the third embodiment.
- A
refrigeration cycle apparatus 200 according to the fourth embodiment includes any one of the heat exchangers according to the first to third embodiments as an evaporator.Refrigeration cycle apparatus 200 mainly includes acompressor 111,heat exchangers 100, 101, aheat exchanger 113, and anexpansion valve 114. Inrefrigeration cycle apparatus 200,second header 14 serves as an inflow portion of refrigerant, andfirst header 13 serves as an outflow portion of refrigerant. In each ofheat exchangers 100 and 101 serving as evaporators, the refrigerant flows throughsecond header 14, secondheat exchange portion 12, bridgingheader 15, firstheat exchange portion 11, andfirst header 13 in this order. The gas-liquid two-phase refrigerant that has been condensed inheat exchanger 113 and then decompressed byexpansion valve 114 flows intosecond header 14. The gas-liquid two-phase refrigerant exchanges heat with air flowing in the Y direction through secondheat exchange portion 12 and firstheat exchange portion 11 and thereby evaporates and turns into gas-phase refrigerant. This gas-phase refrigerant flows out offirst header 13 and is suctioned intocompressor 111. Note thatrefrigeration cycle apparatus 200 may further include a four-way valve 112 for switching the flow direction of the refrigerant. Four-way valve 112 switches the operation mode between an operation mode in whichheat exchanger 100, 101 serves as an evaporator and an operation mode in whichheat exchanger 100, 101 serves as a condenser. - Although the embodiments of the present disclosure have been described as above, the above-described embodiments can also be variously modified. Further, the scope of the present disclosure is not limited to the above-described embodiments. The scope of the present disclosure is defined by the terms of the claims and is intended to include any modifications within the meaning and scope equivalent to the terms of the claims.
- 1 first fin, 1A, 1B, 3A, 3B end portion, 1C, 3C insertion hole, 1D, 3D continuous portion, 2 first flat tube, 2A, 4A upper surface, 3 second fin, 4 second flat tube, 11 first heat exchange portion, 12 second heat exchange portion, 13 first header, 14 second header, 15 bridging header, 15A, 19A, 20A first plate, 15B, 19B, 20B second plate, 15C, 19C, 20C third plate, 15D recess, 16, 21 first insertion hole, 17, 22 second insertion hole, 18, 23 communication space, 19 first bridging header, 20 second bridging header, 100, 101 heat exchanger.
Claims (9)
- A heat exchanger comprising:a first heat exchange portion and a second heat exchange portion arranged side by side in a first direction intersecting with a direction of gravity,the first heat exchange portion havinga plurality of first fins extending in the direction of gravity and arranged side by side in a second direction intersecting with the direction of gravity and the first direction, anda plurality of first flat tubes mounted to intersect with each of the first fins and arranged side by side in the direction of gravity,the second heat exchange portion havinga plurality of second fins extending in the direction of gravity and arranged side by side in the second direction, anda plurality of second flat tubes mounted to intersect with each of the second fins and arranged side by side in the direction of gravity,the heat exchanger further comprising:a first header connected to a first end of each of the first flat tubes;a second header connected to a first end of each of the second flat tubes; anda third header connected to a second end of each of the first flat tubes and a second end of each of the second flat tubes, whereinwhen viewed in the first direction, each of the second flat tubes is disposed not to overlap with each of the first flat tubes, andthe third header hasa first plate provided with a plurality of first insertion holes through which the second ends of the first flat tubes are respectively inserted, and a plurality of second insertion holes through which the second ends of the second flat tubes are respectively inserted, anda second plate provided with a plurality of communication spaces each communicating with a corresponding one of the first insertion holes and a corresponding one of the second insertion holes.
- The heat exchanger according to claim 1, wherein at least one of the first flat tubes that is connected to one communication space of the communication spaces is located lower in the direction of gravity than at least one of the second flat tubes that is connected to the one communication space.
- A heat exchanger comprising:a first heat exchange portion and a second heat exchange portion arranged side by side in a first direction intersecting with a direction of gravity,the first heat exchange portion havinga plurality of first fins extending in the direction of gravity and arranged side by side in a second direction intersecting with the direction of gravity and the first direction, anda plurality of first flat tubes mounted to intersect with each of the first fins and arranged side by side in the direction of gravity,the second heat exchange portion havinga plurality of second fins extending in the direction of gravity and arranged side by side in the second direction, anda plurality of second flat tubes mounted to intersect with each of the second fins and arranged side by side in the direction of gravity,the heat exchanger further comprising:a first header connected to a first end of each of the first flat tubes;a second header connected to a first end of each of the second flat tubes; anda third header connected to a second end of each of the first flat tubes and a second end of each of the second flat tubes, the third header being provided with a plurality of communication spaces each communicating with a corresponding one of the first flat tubes and a corresponding one of the second flat tubes, whereinwhen viewed in the first direction, each of the second flat tubes is disposed not to overlap with each of the first flat tubes, andat least one of the first flat tubes that is connected to one communication space of the communication spaces is located lower in the direction of gravity than at least one of the second flat tubes that is connected to the one communication space.
- The heat exchanger according to claim 3, wherein
the third header hasa first plate provided with a plurality of first insertion holes through which the second ends of the first flat tubes are respectively inserted, and a plurality of second insertion holes through which the second ends of the second flat tubes are respectively inserted, anda second plate provided with the communication spaces. - The heat exchanger according to any one of claims 1, 2, and 4, wherein the first plate is smaller in thickness than the second plate.
- The heat exchanger according to any one of claims 1, 2, 4, and 5, wherein the second plate is configured as a multilayer body formed of a plurality of plate members.
- The heat exchanger according to any one of claims 1 to 6, whereineach of the first flat tubes and the second flat tubes has an upper surface inclined with respect to a horizontal direction, andeach of the communication spaces extends along the upper surface.
- The heat exchanger according to any one of claims 1 to 7, whereineach of the first fins and the second fins has a continuous portion disposed on one side in the first direction and extending in the direction of gravity,each of the first fins and the second fins is provided with a plurality of insertion holes disposed on the other side in the first direction with respect to the continuous portion, each of the first flat tubes or each of the second flat tubes being inserted through a corresponding one of the insertion holes, andthe first heat exchange portion and the second heat exchange portion are disposed such that the first direction extends in a ventilation direction and the continuous portion is located upstream from the insertion holes in the ventilation direction.
- A refrigeration cycle apparatus comprising the heat exchanger according to any one of claims 1 to 8 as an evaporator.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2020/039355 WO2022085067A1 (en) | 2020-10-20 | 2020-10-20 | Heat exchanger and refrigeration cycle device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4235058A1 true EP4235058A1 (en) | 2023-08-30 |
EP4235058A4 EP4235058A4 (en) | 2024-01-10 |
Family
ID=81290325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20958620.5A Withdrawn EP4235058A4 (en) | 2020-10-20 | 2020-10-20 | Heat exchanger and refrigeration cycle device |
Country Status (5)
Country | Link |
---|---|
US (1) | US20230375283A1 (en) |
EP (1) | EP4235058A4 (en) |
JP (1) | JPWO2022085067A1 (en) |
CN (1) | CN116507871A (en) |
WO (1) | WO2022085067A1 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015045105A1 (en) * | 2013-09-27 | 2015-04-02 | 三菱電機株式会社 | Heat exchanger and air conditioner using same |
JP2015113983A (en) | 2013-12-09 | 2015-06-22 | 三星電子株式会社Samsung Electronics Co.,Ltd. | Heat exchanger |
JP6080982B2 (en) * | 2013-12-27 | 2017-02-15 | 三菱電機株式会社 | Laminated header, heat exchanger, and air conditioner |
EP3239640A4 (en) * | 2014-12-26 | 2018-09-26 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus |
US10436514B2 (en) * | 2015-12-21 | 2019-10-08 | Mitsubishi Electric Corporation | Heat exchanger and refrigeration cycle apparatus |
JP6647319B2 (en) * | 2016-01-19 | 2020-02-14 | 三菱電機株式会社 | Heat exchanger |
JP6826133B2 (en) * | 2017-01-31 | 2021-02-03 | 三菱電機株式会社 | Heat exchanger and refrigeration cycle equipment |
JP7078840B2 (en) * | 2018-01-19 | 2022-06-01 | ダイキン工業株式会社 | Heat exchanger and air conditioner |
JP6980117B2 (en) * | 2018-08-27 | 2021-12-15 | 三菱電機株式会社 | Heat exchanger, heat exchanger unit, and refrigeration cycle device |
-
2020
- 2020-10-20 JP JP2022556850A patent/JPWO2022085067A1/ja active Pending
- 2020-10-20 CN CN202080106198.5A patent/CN116507871A/en active Pending
- 2020-10-20 US US18/027,236 patent/US20230375283A1/en active Pending
- 2020-10-20 EP EP20958620.5A patent/EP4235058A4/en not_active Withdrawn
- 2020-10-20 WO PCT/JP2020/039355 patent/WO2022085067A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
US20230375283A1 (en) | 2023-11-23 |
JPWO2022085067A1 (en) | 2022-04-28 |
EP4235058A4 (en) | 2024-01-10 |
CN116507871A (en) | 2023-07-28 |
WO2022085067A1 (en) | 2022-04-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7367203B2 (en) | Refrigerant evaporator | |
US9651317B2 (en) | Heat exchanger and air conditioner | |
US8333088B2 (en) | Heat exchanger design for improved performance and manufacturability | |
US20160216014A1 (en) | Heat exchanger and air conditioner | |
US10041710B2 (en) | Heat exchanger and air conditioner | |
JP4358981B2 (en) | Air conditioning condenser | |
WO2018116929A1 (en) | Heat exchanger and air conditioner | |
WO2017150126A1 (en) | Heat exchanger and air conditioner | |
EP3141859B1 (en) | Micro channel type heat exchanger | |
JP7097986B2 (en) | Heat exchanger and refrigeration cycle equipment | |
WO2014188690A1 (en) | Refrigerant evaporator | |
JP6341099B2 (en) | Refrigerant evaporator | |
WO2020217271A1 (en) | Refrigerant distributor, heat exchanger, and refrigeration cycle device | |
JP2007078292A (en) | Heat exchanger, and dual type heat exchanger | |
EP4235058A1 (en) | Heat exchanger and refrigeration cycle device | |
WO2016136265A1 (en) | Refrigerant evaporator | |
JP2007040605A (en) | Heat exchanger for multistage compression type refrigeration cycle device | |
JP3812021B2 (en) | Laminate heat exchanger | |
JPH0894274A (en) | Accumulated type heat exchanger | |
CN115298507A (en) | Heat exchanger | |
JP2020148346A (en) | Heat exchanger and air conditioner | |
EP3511666B1 (en) | Plate-type heat exchanger and refrigeration cycle device | |
KR102161475B1 (en) | Air conditioner system for vehicle | |
JP7310655B2 (en) | Heat exchanger | |
JP7327214B2 (en) | Heat exchanger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20230411 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20231208 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F28F 9/02 20060101ALI20231204BHEP Ipc: F28D 1/053 20060101ALI20231204BHEP Ipc: F25B 39/02 20060101AFI20231204BHEP |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20240607 |