WO2012098916A1 - 熱交換器および空気調和機 - Google Patents
熱交換器および空気調和機 Download PDFInfo
- Publication number
- WO2012098916A1 WO2012098916A1 PCT/JP2012/000383 JP2012000383W WO2012098916A1 WO 2012098916 A1 WO2012098916 A1 WO 2012098916A1 JP 2012000383 W JP2012000383 W JP 2012000383W WO 2012098916 A1 WO2012098916 A1 WO 2012098916A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spacer
- region
- fin
- heat exchanger
- insertion region
- Prior art date
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Classifications
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
- F28F1/325—Fins with openings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
-
- 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
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/12—Fins with U-shaped slots for laterally inserting conduits
Definitions
- the present invention relates to a heat exchanger that includes a flat tube and fins, heat exchanges fluid flowing in the flat tube with air, and an air conditioner including the heat exchanger, and in particular, measures for maintaining a fin interval of the heat exchanger. It is related to.
- a heat exchanger provided with a flat tube and fins is known.
- a heat exchanger described in Patent Document 1 a plurality of flat tubes extending in the left-right direction are arranged one above the other at a predetermined interval, and plate-like fins are arranged at a predetermined interval from each other. They are arranged in the extending direction. The air flowing while contacting the fin exchanges heat with the fluid flowing in the flat tube.
- a fin collar is formed in the insertion portion of the fin flat tube, and the fin collar holds the fins at a predetermined interval.
- the fin collar is formed by bending a portion corresponding to the tube insertion portion of the fin for inserting the flat tube.
- the width of the fin tube insertion portion is also narrowed, and a fin collar having a height corresponding to the fin interval can be formed only by bending a portion corresponding to the fin tube insertion portion. There was a problem that I could not.
- the present invention has been made in view of such a point, and an object thereof is to hold a plurality of fins at a predetermined interval.
- the fin (36) includes a plate-shaped fin body (36a) and a mounting portion (36b) to which the flat tube (33) is in contact and to which the flat tube (33) is attached.
- the fin main body (36a) is formed by bending a part of the plate-shaped main body portion (36c) and the fin main body (36a), and continues to the main body portion (36c). And a plurality of spacers (48) that hold the intervals of ().
- the spacer (48) is formed by bending a part of the fin body (36a), a sufficient height of the spacer (48) is secured, and the interval between the fins (36) is set. It becomes a predetermined interval.
- the fin main body (36a) is continuous with an insertion region (40) into which the flat tube (33) is inserted and one end of the insertion region (40) in the air flow direction. And an extension region (41) connecting the insertion region (40), and the spacer (48) is formed in both the insertion region (40) and the extension region (41). Yes.
- the interval between the fins (36) is a predetermined interval.
- the fin (36) is formed such that air flows from the insertion region (40) toward the extension region (41).
- the spacer (48) is characterized in that it is arranged just behind the leeward side of the spacer (48) in the insertion region (40).
- the extension region (41) since the spacer (48) of the extension region (41) is located immediately after the leeward side of the spacer (48) of the insertion region (40), the extension region (41) The influence of the air flow on the spacer (48) is small, and the air flow is hardly hindered.
- the fin (36) is formed such that air flows from the insertion region (40) toward the extension region (41).
- the spacer (48) is characterized by being arranged behind the flat tube (33).
- the spacer (48) is located in the dead water area behind the flat tube (33), the air flow is not hindered.
- the spacer (48) in the insertion region (40) is a flat spacer body (48a) bent at a right angle from the fin body (36a).
- the spacer (48) is formed so as to be inclined obliquely with respect to the air flow.
- the sixth invention is characterized in that, in the third or fourth invention, the spacer (48) is formed by cutting and raising a part of the fin body (36a).
- the spacer (48) is formed by cutting and raising a part of the fin body (36a), the spacer (48) is formed without requiring a separate member.
- the spacer (48) in the insertion region (40) is cut and raised from the leeward side to the leeward side, and the spacer (48) in the extended region (41) is leeward. It is characterized by being cut and raised from the side to the windward side.
- the distance between the spacer (48) in the insertion area (40) and the spacer (48) in the extension area (41) is reduced, and the distance between the fins (36) is stably maintained.
- the insertion region (40) includes an intermediate region (42) positioned between the flat tubes (33) and the intermediate region (42).
- the extended region (41) and the projecting region (43) projecting to the windward side opposite to the extension region (41) are formed.
- the spacer (48) of the insertion region (40) is the spacer (48) of the insertion region (40).
- the protruding region (43) is formed on the central portion through which the center line between the flat tubes (33) passes.
- the spacer (48) of the insertion region (40) is located on the center between the flat tubes (33), the interval between the fins (36) is stably maintained. Is done.
- the insertion region (40) includes an intermediate region (42) positioned between the flat tubes (33) and an extended region ( 41) and a projecting region (43) projecting to the opposite side are formed, and the spacer (48) of the insertion region (40) is an edge of the projecting region (43) and a parallel edge parallel to the air flow (43b) is formed by bending.
- the spacer (48) is formed on the parallel edge (43b) of the projecting region (43) parallel to the air flow, the air flow is not hindered and the air resistance is extremely reduced. .
- the spacer (48) of the insertion region (40) is formed as a flat spacer body (48a) that is bent at a right angle from the fin body (36a). ) Is formed in parallel with the air flow.
- the eleventh invention is characterized in that, in any one of the first to tenth inventions, the spacer (48) is formed in a trapezoidal shape having a long side at the tip.
- the tip of the spacer (48) since the tip of the spacer (48) has a long side, a sufficient contact area between adjacent fins (36) is ensured.
- the twelfth invention is characterized in that, in any one of the first to eleventh inventions, the spacer (48) is formed with a rib (48d) extending in a protruding direction of the spacer (48). Yes.
- the thirteenth invention is characterized in that, in the twelfth invention, the rib (48d) is formed from the main body (36c) of the fin main body (36a) to the spacer (48).
- the rib (48d) is formed from the main body (36c) of the fin main body (36a) to the spacer (48), the fold (48c) of the spacer (48) is formed. ) Is improved.
- the spacer (48) has a tip portion that cuts and raises the spacer (48) with respect to the adjacent fin body (36a).
- it is characterized by being displaced from the opening (36d) formed in the fin main body (36a).
- the tip of the spacer (48) is displaced from the opening (36d) so that the tip of the spacer does not fit into the opening (36d) of the adjacent fin body (36a).
- a fifteenth invention is directed to an air conditioner (10), and includes a refrigerant circuit (20) provided with the heat exchanger (30) of any one of the first to fourteenth inventions, and the refrigerant circuit In (20), the refrigerant is circulated to perform the refrigeration cycle.
- the heat exchanger (30) of any one of the first to fourteenth inventions is connected to the refrigerant circuit (20).
- the refrigerant circulating in the refrigerant circuit (20) flows through the passage (34) of the flat tube (33) and exchanges heat with air, for example.
- the spacer (48) is formed by bending a part of the fin body (36a), a sufficient height of the spacer (48) can be secured, so that each fin (36 ) Can be reliably held at a predetermined interval.
- the spacer (48) is formed in the insertion region (40) and the extension region (41) of the fin body (36a), the entire fin (36) is formed.
- the interval between the fins (36) can be reliably maintained at a predetermined interval.
- the spacer (48) of the extension region (41) is located immediately on the leeward side of the spacer (48) of the insertion region (40),
- the influence of the air flow on the spacer (48) in the region (41) is small, and it is possible to reduce the obstruction of the air flow.
- the spacer (48) is located in the dead water area behind the flat tube (33), the air flow is not hindered.
- the spacer (48) is inclined with respect to the air flow, the air resistance can be reliably reduced.
- the spacer (48) is formed by cutting and raising a part of the fin body (36a), the spacer (48) can be formed without requiring a separate member. As a result, the structure can be simplified.
- the spacer (48) of the insertion region (40) is cut and raised from the leeward side to the leeward side, and the spacer (48) of the extended region (41) is moved from the leeward side to the leeward side. Since the distance between the spacer (48) of the insertion region (40) and the spacer (48) of the extension region (41) can be narrowed, the interval between the fins (36) can be reduced. It can be held stably.
- the spacer (48) of the insertion region (40) is formed in the projecting region (43) on the central portion through which the center line between the flat tubes (33) passes. Therefore, the space
- the spacer (48) is formed on the parallel edge (43b) of the projecting region (43) parallel to the air flow, the air flow is not hindered and the air resistance is reduced. It can be greatly reduced.
- the spacer (48) can be formed by utilizing the portion to be discarded, so that the spacer (48) can be formed efficiently.
- the spacer (48) is parallel to the air flow, the air flow is not hindered and the air resistance can be further reduced.
- the tip of the spacer (48) since the tip of the spacer (48) has a long side, a sufficient contact area between adjacent fins (36) can be secured, and each fin (36) The interval can be stably maintained at a predetermined interval.
- the rib (48d) is formed on the spacer (48), the proof stress of the spacer (48) can be improved. As a result, the spacer (48) can be reliably prevented from being crushed, so that the interval between the fins (36) can be reliably maintained at a predetermined interval.
- the rib (48d) is formed from the main body (36c) of the fin main body (36a) to the spacer (48), so that the strength of the fold (48c) is high. And the fall of the spacer (48) can be reliably prevented.
- the spacer (48) has an opening in the fin body (36a) whose tip corresponds to the cut-up of the spacer (48) relative to the adjacent fin bodies (36a). Since it is offset from (36d), it does not fit into the opening (36d) of the fin body (36a) where the tips are adjacent to each other. As a result, the spacer (48) reliably holds the interval between the fins (36) at a predetermined interval.
- FIG. 1 is a refrigerant circuit diagram illustrating a schematic configuration of the air conditioner according to the first embodiment.
- FIG. 2 is a schematic perspective view of the heat exchanger according to the first embodiment.
- FIG. 3 is a partial cross-sectional view illustrating the front of the heat exchanger according to the first embodiment.
- FIG. 4 is a cross-sectional view of the heat exchanger showing a part of the AA cross section of FIG.
- FIG. 5 is a front view illustrating main portions of the fins of the heat exchanger according to the first embodiment.
- FIG. 6 is a cross-sectional view showing a BB cross section of FIG.
- FIG. 7 is a cross-sectional view illustrating a plurality of fins according to the first embodiment.
- FIG. 8 is a front view showing the spacer.
- FIG. 9 is a front view illustrating main portions of the fins of the heat exchanger according to the second embodiment.
- FIG. 10 is a cross-sectional view of the fin according to the second embodiment.
- FIG. 11 is a front view illustrating the main part of the fin according to the third embodiment.
- FIG. 12 is a perspective view illustrating the main part of the fin before the spacer according to the fourth embodiment is cut and raised.
- FIG. 13 is a perspective view illustrating a main part of the fin after the spacer according to the fourth embodiment is cut and raised.
- FIG. 14 is a plan view of the spacer according to the fourth embodiment.
- FIG. 15 is a cross-sectional view of the spacer according to the fifth embodiment.
- FIG. 16 is a front view illustrating the main part of the fin according to the sixth embodiment.
- Embodiment 1 The heat exchanger (30) of Embodiment 1 constitutes an outdoor heat exchanger (23) of the air conditioner (10).
- the air conditioner (10) includes an outdoor unit (11) and an indoor unit (12).
- the outdoor unit (11) and the indoor unit (12) are connected via a liquid side connecting pipe (13) and a gas side connecting pipe (14).
- a refrigerant circuit (20) is formed by the outdoor unit (11), the indoor unit (12), the liquid side connection pipe (13), and the gas side connection pipe (14).
- the refrigerant circuit (20) includes a compressor (21), a four-way switching valve (22), an outdoor heat exchanger (23), an expansion valve (24), and an indoor heat exchanger (25). Yes.
- the compressor (21), the four-way switching valve (22), the outdoor heat exchanger (23), and the expansion valve (24) are accommodated in the outdoor unit (11).
- the outdoor unit (11) is provided with an outdoor fan (15) for supplying outdoor air to the outdoor heat exchanger (23).
- the indoor heat exchanger (25) is accommodated in the indoor unit (12).
- the indoor unit (12) is provided with an indoor fan (16) for supplying room air to the indoor heat exchanger (25).
- the discharge side of the compressor (21) is connected to the first port of the four-way switching valve (22), and the suction side is connected to the second port of the four-way switching valve (22).
- the outdoor heat exchanger (23), the expansion valve (24), and the indoor heat exchanger are sequentially arranged from the third port to the fourth port of the four-way switching valve (22). (25) and are arranged.
- the compressor (21) is a scroll type or rotary type hermetic compressor.
- the four-way switching valve (22) has a first state (state indicated by a broken line in FIG. 1) in which the first port communicates with the third port and the second port communicates with the fourth port, The port is switched to a second state (state indicated by a solid line in FIG. 1) in which the port communicates with the fourth port and the second port communicates with the third port.
- the expansion valve (24) is a so-called electronic expansion valve.
- the outdoor heat exchanger (23) exchanges heat between the outdoor air and the refrigerant.
- the outdoor heat exchanger (23) is configured by the heat exchanger (30) of the present embodiment.
- the indoor heat exchanger (25) exchanges heat between the indoor air and the refrigerant.
- the indoor heat exchanger (25) is constituted by a so-called cross fin (36) type fin (36) and tube heat exchanger provided with a heat transfer tube which is a circular tube.
- the air conditioner (10) performs a cooling operation.
- the four-way switching valve (22) is set to the first state.
- the outdoor fan (15) and the indoor fan (16) are operated.
- Refrigeration cycle is performed in the refrigerant circuit (20). Specifically, the refrigerant discharged from the compressor (21) flows into the outdoor heat exchanger (23) through the four-way switching valve (22), dissipates heat to the outdoor air, and is condensed. The refrigerant flowing out of the outdoor heat exchanger (23) expands when passing through the expansion valve (24), then flows into the indoor heat exchanger (25), absorbs heat from the indoor air, and evaporates. The refrigerant that has flowed out of the indoor heat exchanger (25) passes through the four-way switching valve (22) and then is sucked into the compressor (21) and compressed. The indoor unit (12) supplies the air cooled in the indoor heat exchanger (25) to the room.
- the air conditioner (10) performs heating operation.
- the four-way selector valve (22) is set to the second state.
- the outdoor fan (15) and the indoor fan (16) are operated.
- Refrigeration cycle is performed in the refrigerant circuit (20). Specifically, the refrigerant discharged from the compressor (21) flows into the indoor heat exchanger (25) through the four-way switching valve (22), dissipates heat to the indoor air, and condenses. The refrigerant flowing out of the indoor heat exchanger (25) expands when passing through the expansion valve (24), then flows into the outdoor heat exchanger (23), absorbs heat from the outdoor air, and evaporates. The refrigerant that has flowed out of the outdoor heat exchanger (23) passes through the four-way switching valve (22) and then is sucked into the compressor (21) and compressed. The indoor unit (12) supplies the air heated in the indoor heat exchanger (25) to the room.
- the outdoor heat exchanger (23) functions as an evaporator during the heating operation.
- the evaporation temperature of the refrigerant in the outdoor heat exchanger (23) may be lower than 0 ° C.
- the moisture in the outdoor air becomes frost and the outdoor heat exchanger (23 ). Therefore, the air conditioner (10) performs the defrosting operation every time the duration time of the heating operation reaches a predetermined value (for example, several tens of minutes).
- the four-way switching valve (22) When starting the defrosting operation, the four-way switching valve (22) is switched from the second state to the first state, and the outdoor fan (15) and the indoor fan (16) are stopped.
- the refrigerant circuit (20) during the defrosting operation the high-temperature refrigerant discharged from the compressor (21) is supplied to the outdoor heat exchanger (23).
- the frost adhering to the surface In the outdoor heat exchanger (23), the frost adhering to the surface is heated and melted by the refrigerant.
- the refrigerant that has radiated heat in the outdoor heat exchanger (23) sequentially passes through the expansion valve (24) and the indoor heat exchanger (25), and is then sucked into the compressor (21) and compressed.
- the heating operation is resumed. That is, the four-way switching valve (22) is switched from the first state to the second state, and the operation of the outdoor fan (15) and the indoor fan (16) is resumed.
- the heat exchanger (30) includes one first header collecting pipe (31), one second header collecting pipe (32), and a large number of flat tubes (33). And a large number of fins (36).
- the first header collecting pipe (31), the second header collecting pipe (32), the flat pipe (33) and the fin (36) are all made of an aluminum alloy and are joined to each other by brazing. .
- the flat tube (33) and the fins (36) are provided in a direction in which the width direction follows the air flow, and the flat tube (33) and the fins (36) are provided in a lattice shape orthogonal to each other. Yes.
- the first header collecting pipe (31) and the second header collecting pipe (32) are both formed in a vertically long cylindrical shape, one at the left end of the heat exchanger (30) and the other at the heat exchanger (30). It is arranged at the right end respectively.
- the flat tubes (33) are heat transfer tubes having a flat cross-sectional shape, and are arranged in parallel in the vertical direction with their flat side surfaces facing each other.
- Each flat tube (33) has a plurality of fluid passages (34). One end of each of the flat tubes (33) arranged in the vertical direction is inserted into the first header collecting pipe (31), and the other end is inserted into the second header collecting pipe (32).
- the fins (36) are plate-like fins (36), and are arranged at regular intervals in the extending direction of the flat tube (33). That is, the fin (36) is disposed so as to be substantially orthogonal to the extending direction of the flat tube (33).
- the fin (36) is a vertically long plate-like fin formed by pressing a metal plate as shown in FIG. And the said fin (36) is formed from the plate-shaped fin main body (36a) and the attaching part (36b) which attaches a flat tube (33) to this fin main body (36a).
- the fin (36) has a number of elongated notches (45) extending in the width direction of the fin (36) from the front edge (38) of the fin (36), corresponding to the flat tube (33). ing.
- the multiple notches (45) are formed at regular intervals in the longitudinal direction (vertical direction) of the fin (36).
- the notch (45) is formed so that the flat tube (33) is inserted, and a portion closer to the lee of the notch (45) is configured as a tube insertion portion (46) of the flat tube (33).
- the tube insertion portion (46) is formed such that the vertical width is substantially equal to the thickness of the flat tube (33) and the length is substantially equal to the width of the flat tube (33).
- the edge of the pipe insertion part (46) of the fin (36) is formed in the attachment part (36b). Specifically, the edge of the tube insertion part (46) is formed with a collar to constitute the attachment part (36b).
- the flat tube (33) is inserted into the tube insertion portion (46) and comes into contact with the mounting portion (36b), and the flat tube (33) is joined to the mounting portion (36b) by brazing and the flat tube (33) Is attached to the fin body (36a).
- the fin body (36a) is connected to the insertion region (40) into which the flat tube (33) is inserted and one end of the insertion region (40) in the air flow direction, and connects the insertion region (40).
- An extension region (41) is formed. That is, the insertion region (40) is located on the leeward side of the air, and the extension region (41) is formed on the leeward side of the insertion region (40).
- the insertion region (40) includes an intermediate region (42) positioned between the flat tubes (33), and a protruding region (43) protruding from the intermediate region (42) to the opposite side of the extended region (41). And are formed. That is, the projecting region (43) is located on the most leeward side of the air, the intermediate region (42) is formed on the leeward side of the projecting region (43), and the extension region (41) is formed on the intermediate region (42). Located on the leeward side.
- a plurality of louvers (50) are formed in the insertion region (40) and the extension region (41) of the fin body (36a).
- Each said louver (50) comprises a heat-transfer promotion part, and as shown in FIG.6 and FIG.7, it forms by cutting up part of an insertion area
- Each louver (50) is formed so that its longitudinal direction is substantially parallel to the front edge (38) of the protruding region (43). That is, the longitudinal direction of each louver (50) is the vertical direction.
- the plurality of louvers (50) are formed side by side from the leeward side to the leeward side.
- the water guiding rib (71) is an elongated concave groove extending vertically along the leeward end of the extension region (41), and is formed from the upper end to the lower end of the extension region (41).
- the fin body (36a) is formed with a spacer (48) for maintaining the spacing between adjacent fins (36).
- the spacer (48) is formed in the extended region (41) of the fin body (36a) and the protruding region (43) of the insertion region (40), as shown in FIGS.
- the spacers (48) of the extension region (41) are formed corresponding to the tube insertion portion (46), and are arranged one by one behind the flat tube (33), that is, on the leeward side of the flat tube (33). Yes.
- One spacer (48) of the insertion area (40) is arranged in each protruding area (43), and is arranged in the center of the protruding area (43) on the windward side of the louver (50) located on the most windward side. ing.
- the spacer (48) of the insertion region (40) is formed in the protruding region (43) on the central portion through which the center line between the flat tubes (33) passes.
- the center portion includes a range slightly deviated from the center line in addition to the center line between the flat tubes (33).
- the spacer (48) is formed by bending a part of the fin body (36a), and specifically formed by cutting and raising a part of the fin body (36a). That is, the fin main body (36a) includes a plate-shaped main body portion (36c) having an insertion region (40) and an extension region (41), and a spacer (48) continuous to the main body portion (36c). ing. And the said spacer (48) is standing upright from the main-body part (36c) of the said fin main body (36a) through the crease
- the spacer (48) includes a flat spacer body (48a) that is bent at a right angle from the fin body (36a), and a curved portion that is curved in an arc shape at the tip of the spacer body (48a). (48b).
- the spacer (48) is formed in a trapezoidal shape in which the tip, that is, the end of the curved portion (48b) is a long side. Further, the spacer (48) is shifted from the opening (36d) of the fin body (36a) corresponding to the raising of the spacer (48) with respect to the adjacent fin body (36a). .
- the said spacer (48) is comprised so that the front-end
- the spacer (48) of the extension region (41) is formed in a region that becomes a dead water region by the flat tube (33), and the width is formed substantially the same as the flat tube (33). Further, the spacer (48) of the extension region (41) has a flat surface formed in a direction perpendicular to the air flow. That is, the width direction and the height direction of the spacer (48) of the extension region (41) are orthogonal to the air flow.
- the spacer (48) of the insertion region (40) is formed so that its flat surface is inclined obliquely with respect to the air flow, and from one side of the spacer (48) so as to reduce the air resistance. It inclines leeward toward the other side. That is, the height direction of the spacer (48) in the insertion region (40) is orthogonal to the air flow, and the width direction is inclined with respect to the air flow.
- the spacer (48) of the insertion region (40) is cut and raised from the leeward side to the leeward side, and the spacer (48) of the extended region (41) is cut and raised from the leeward side to the leeward side, and the insertion region (
- Each spacer (48) is formed so that the distance between the spacer (48) of 40) and the spacer (48) of the extension region (41) is narrowed.
- the spacer (48) between the extension region (41) and the insertion region (40) is in contact with the main body portion (36c) of the fin main body (36a) where the tips of the curved portions (48b) are adjacent to each other.
- the fin body (36a) is held at a predetermined interval.
- the spacer (48) is formed by bending a part of the fin body (36a), the height of the spacer (48) can be sufficiently secured.
- the interval of 36) can be reliably held at a predetermined interval.
- the spacer (48) is formed in the insertion region (40) and the extension region (41) of the fin body (36a), the interval between the fins (36) is set over the entire fin (36). It can be reliably held at a predetermined interval.
- the spacer body (48a) in the insertion region (40) is inclined with respect to the air flow, the air resistance can be reliably reduced.
- the spacer (48) is formed by cutting and raising a part of the fin main body (36a), the spacer (48) can be formed without requiring a separate member or the like, thereby simplifying the structure. be able to.
- the spacer (48) of the insertion region (40) is cut and raised from the leeward side to the leeward side
- the spacer (48) of the extended region (41) is cut and raised from the leeward side to the leeward side. Since the space
- each fin (36) can be stably maintained.
- the tip of the spacer (48) has a long side, a sufficient contact area between adjacent fins (36) can be secured, and the interval between the fins (36) can be stabilized at a predetermined interval. Can be held.
- the spacer (48) is shifted from the opening (36d) of the fin body (36a) corresponding to the raising of the spacer (48) with respect to the adjacent fin body (36a). Therefore, it does not fit into the opening (36d) of the fin main body (36a) whose tip portions are adjacent to each other. As a result, the spacer (48) reliably holds the interval between the fins (36) at a predetermined interval.
- the spacer (48) of the insertion area (40) of the first embodiment is arranged in the center of the protruding area (43), but the insertion area ( 40) spacers (48) are formed on the edge of the projecting region (43).
- both sides of the projecting region (43) of the fin body (36a) are provided with a gently inclined edge (43a) gently inclined from the front edge (38) to the leeward side by the notch (45), and the gently inclined end.
- a parallel edge (43b) that is continuous with the edge (43a) and parallel to the air flow, and a steeply inclined edge (43c) that is continuous with the parallel edge (43b) and rapidly inclines toward the leeward side are formed.
- the tube insertion portion (46) is continuous with the steeply inclined edge (43c).
- the spacer (48) of the insertion region (40) is formed by bending from the parallel edge (43b) on both sides of the protruding region (43).
- the spacer (48) of the insertion region (40) is formed in a trapezoidal shape like the spacer (48) of the first embodiment, and includes a spacer body (48a) and a curved portion (48b). ) Bends at right angles from the protruding region (43) and is formed in parallel with the air flow.
- the spacer (48) of the insertion region (40) is adjacent to the edge of the protruding region (43) of the fin body (36a) where the tips of the curved portions (48b) are adjacent to each other. 36a) is kept at a predetermined interval.
- a bulging portion (60) which is a heat transfer promoting portion formed by bending the fin body (36a) into a mountain shape is provided. Is formed.
- Other configurations and operations are the same as those in the first embodiment.
- the spacer (48) of the extension region (41) is the same as that of the first embodiment.
- Embodiment 2- since the spacer (48) is formed on the parallel edge (43b) of the protruding region (43) parallel to the air flow, the air flow is not hindered and the air resistance is extremely reduced. be able to.
- the spacer (48) can be formed by utilizing the portion to be discarded, so that the spacer (48) can be formed efficiently.
- the spacer body (48a) is parallel to the air flow, the air flow is not hindered and the air resistance can be further reduced.
- Other effects such as the spacer (48) of the extension region (41) are the same as those of the first embodiment.
- Embodiment 3 of the Invention Next, Embodiment 3 of the present invention will be described in detail based on the drawings.
- the spacer (48) of the extension region (41) of the first embodiment is arranged behind the flat tube (33), but the spacer of the extension region (41). (48) is formed immediately after the spacer (48) in the insertion region (40).
- the spacer (48) of the insertion region (40) and the spacer (48) of the extension region (41) are formed on the central portion through which the center line between the flat tubes (33) passes, and the extension
- the spacer (48) in the region (41) is disposed immediately after the leeward side of the spacer (48) in the insertion region (40).
- the center part includes a range slightly deviated from the center line.
- region (40) is formed so that it may incline with respect to an air flow similarly to Embodiment 1, and the spacer (48) of the said extension area
- the spacer (48) in the insertion area (40) is cut and raised from the leeward side to the leeward side, and the spacer (48) in the extended area (41) is cut and raised from the leeward side to the leeward side.
- Each spacer (48) is formed so that the space
- the fin main body (36a) of the present embodiment is formed by bending the fin main body (36a) into a chevron as shown in the second embodiment instead of the windward louvers (50) of the first embodiment.
- the bulging part (60) which is the heat-transfer promotion part formed is formed.
- a bulging portion which is a heat transfer promoting portion (60) is formed.
- a bulging portion (60) that is a heat transfer promoting portion shown in the second embodiment is formed in the extension region (41) of the fin body (36a).
- the bulging portion (60) of the extension region (41) is formed behind the flat tube (33), and along the flat tube (33), the flat tube (33), the louver (50), and the bulging portion ( 60) and the air flowing between them is formed so as to exchange heat at the bulging portion (60) of the extension region (41).
- the spacer (48) of the extension region (41) is disposed between the bulging portions (60) of the extension region (41).
- Other configurations and operations are the same as those in the first embodiment.
- the spacer (48) of the extension region (41) is the same as that of the first embodiment.
- the spacer (48) of the insertion region (40) is cut and raised from the leeward side to the leeward side, and the spacer (48) of the extended region (41) is cut from the leeward side to the leeward side. Since the distance between the spacer (48) of the insertion area (40) and the spacer (48) of the extension area (41) can be reduced, the distance between the fins (36) is stabilized. Can be held.
- each fin (36) can be stably maintained.
- ribs (48d) are formed on the spacer (48) of the third embodiment.
- the rib (48d) is formed as a single linear protrusion extending in the protruding direction of the spacer (48).
- the rib (48d) is formed at the center of the spacer body (48a).
- the tip of the rib (48d) extends to the tip of the spacer body (48a), while the base end of the rib (48d) is
- the main body (36c) of the fin main body (36a) extends from the spacer main body (48a) through the fold (48c). That is, the rib (48d) is bent at the fold (48c), while the rib (48d) is not formed on the curved portion (48b) of the spacer (48).
- the spacer (48) Since the rib (48d) has a small thickness of the fin (36), the spacer (48) has a low yield strength and is easily crushed by simply cutting and raising the spacer (48) from the fin body (36a). 48) formed to improve the strength in the protruding direction. And as shown in FIG. 12, the said rib (48d) is formed in the state before raising the said spacer (48) from the fin main body (36a). The rib (48d) protrudes in the same direction as the protruding direction of the bulging portion (60). Thereafter, the spacer (48) is cut and raised from the fin body (36a) as shown in FIG.
- the rib (48d) is formed on both the spacer (48) of the insertion region (40) and the spacer (48) of the extension region (41). A plurality of the ribs (48d) may be formed. Other configurations are the same as those of the third embodiment.
- the rib (48d) may be formed in the spacer (48) of the first and second embodiments.
- the rib (48d) is formed on the spacer (48), the proof stress of the spacer (48) can be improved. As a result, the spacer (48) can be reliably prevented from being crushed, so that the interval between the fins (36) can be reliably maintained at a predetermined interval.
- the rib (48d) is formed from the main body (36c) of the fin main body (36a) to the spacer (48), the strength of the fold (48c) is improved, and the spacer ( 48) can be reliably prevented from falling.
- Other operations and effects are the same as those of the third embodiment.
- the fourth embodiment is formed in an L shape in place of the spacer (48) configured by the spacer main body (48a) and the curved portion (48b). .
- the spacer (48) includes a first piece (48e) on the proximal end side and a second piece (48f) on the distal end side, and the first piece (48e) and the second piece (48f). ) Is formed in a flat plate shape.
- the first piece (48e) extends obliquely upward in the direction of the opening (36d) from the main body (36c) of the fin main body (36a) through the fold line (48c).
- the second piece (48f) is bent at a substantially right angle from the first piece (48e) and extends obliquely upward in the direction opposite to the opening (36d).
- the said spacer (48) is comprised so that the front-end
- ribs (48d) are formed on the spacer (48) as in the fourth embodiment.
- the rib (48d) is formed from the body portion (36c) of the fin body (36a) to the vicinity of the tip of the second piece portion (48f) through the first piece portion (48e).
- Other configurations, operations, and effects are the same as those in the fourth embodiment. That is, the spacer (48) of the present embodiment is applied to the spacer (48) of the insertion region (40) and the spacer (48) of the extension region (41), while the spacer (48) of the first to third embodiments. You may apply. That is, the spacer (48) of the present embodiment does not have to include the rib (48d).
- horizontal ribs (61, 62) that are heat transfer promoting portions are formed on the fin body (36a) of the third embodiment.
- the fin (36) is formed with two horizontal ribs (61, 62) extending from the protruding region (43) to the intermediate region (42).
- the horizontal ribs (61, 62) are formed as ridges and project in the same direction as the bulging direction of the bulging portion (60).
- the horizontal ribs (61, 62) are formed at an upper part and a lower part in the projecting region (43) of the fin (36), and a second bulge portion on the windward side from the front edge (38) of the fin (36) ( 60) extending horizontally.
- the two horizontal ribs (61, 62) are formed to extend linearly in the protruding direction (air passing direction) of the protruding region (43) of the fin (36).
- These horizontal ribs (61, 62) constitute a reinforcing rib that prevents the protruding region (43) of the fin (36) from bending toward the adjacent fin (36).
- these horizontal ribs (61, 62) constitute a heat transfer section that promotes heat transfer between the fins (36) and air on the windward side of the intermediate region (42).
- the horizontal ribs (61, 62) extending from the projecting region (43) to the intermediate region (42) of the fin (36) are formed, it flows between the fins (36). It is possible to dehumidify the air before cooling. As a result, since the growth of frost on the surface of the intermediate region (42) of the fin (36) can be suppressed, the heat transfer coefficient of the fin (36) decreases due to the growth of frost, or the ventilation path (40 ) Can be avoided.
- the present invention may be configured as follows for the first and second embodiments.
- the spacer (48) is not limited to the insertion region (40) and the extension region (41) of the fin body (36a), only the insertion region (40) of the fin body (36a), Alternatively, it may be formed only in the extension region (41) of the fin body (36a).
- the number of spacers (48) in the insertion region (40) and the extension region (41) is not limited to the first and second embodiments, and is formed corresponding to every other flat tube (33), for example. May be.
- the spacer (48) of the insertion region (40) of Embodiment 2 may be formed only on one side of the protruding region (43).
- the formation of the spacer (48) is not limited to the trapezoid shape in the first invention, for example.
- the spacer (48) of the insertion region (40) and the spacer (48) of the protruding region (43) of Embodiment 3 are not necessarily formed on the central portion through which the center line between the flat tubes (33) passes. It is not necessary and may be formed at a position close to one of the flat tubes (33).
- bulging portion (60) of the extension region (41) of the third embodiment may be the louver (50) shown in the first embodiment.
- the rib (48d) of the fourth embodiment is formed only on the spacer (48) and may not be formed on the main body (36c) of the fin main body (36a).
- the present invention is useful for a heat exchanger including a flat tube and fins and an air conditioner including the heat exchanger.
- heat exchanger 33 flat tube 36 fin 36a fin main body 36b attachment part 36c main body part 36d opening 40 insertion area 41 extension area 42 intermediate area 43 protrusion area 43b parallel edge 45 notch 46 pipe insertion part 48 spacer 48a spacer main body 48b curved Part 48c fold 48d rib
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Other Air-Conditioning Systems (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
Description
実施形態1の熱交換器(30)は、空気調和機(10)の室外熱交換器(23)を構成している。
上記空気調和機(10)は、室外ユニット(11)及び室内ユニット(12)を備えている。上記室外ユニット(11)と室内ユニット(12)は、液側連絡配管(13)及びガス側連絡配管(14)を介して接続されている。そして、上記室外ユニット(11)と室内ユニット(12)と液側連絡配管(13)とガス側連絡配管(14)とによって冷媒回路(20)が形成されている。
空気調和機(10)は、冷房運転を行う。冷房運転中には、四方切換弁(22)が第1状態に設定される。また、冷房運転中には、室外ファン(15)及び室内ファン(16)が運転される。
空気調和機(10)は、暖房運転を行う。暖房運転中には、四方切換弁(22)が第2状態に設定される。また、暖房運転中には、室外ファン(15)及び室内ファン(16)が運転される。
上述したように、暖房運転中には、室外熱交換器(23)が蒸発器として機能する。外気温が低い運転条件では、室外熱交換器(23)における冷媒の蒸発温度が0℃を下回る場合があり、この場合には、室外空気中の水分が霜となって室外熱交換器(23)に付着する。そこで、空気調和機(10)は、例えば暖房運転の継続時間が所定値(たとえは数十分)に達する行う毎に、除霜動作を行う。
上記空気調和機(10)の室外熱交換器(23)を構成する本実施形態の熱交換器(30)について、図2~8を参照しながら説明する。
本実施形態によれば、フィン本体(36a)の一部を折り曲げてスペーサ(48)を形成するようにしたために、スペーサ(48)の高さを十分に確保することができるので、各フィン(36)の間隔を所定の間隔に確実に保持することができる。
次に、本発明の実施形態2を図面に基づいて詳細に説明する。
本実施形態によれば、上記スペーサ(48)が空気流れと平行な突出領域(43)の平行端縁(43b)に形成されているので、空気流れが阻害されず、空気抵抗を極めて低減することができる。特に、フィン(36)を形成する際、廃棄する部位を利用してスペーサ(48)を形成することができるので、効率良くスペーサ(48)を形成することができる。
次に、本発明の実施形態3を図面に基づいて詳細に説明する。
本実施形態によれば、上記延長領域(41)のスペーサ(48)が上記挿入領域(40)のスペーサ(48)の風下側の真直後方に位置しているので、上記延長領域(41)のスペーサ(48)に対する空気流れの影響が少なく、空気流れが阻害されることを少なくすることができる。
次に、本発明の実施形態4を図面に基づいて詳細に説明する。
次に、本発明の実施形態5を図面に基づいて詳細に説明する。
次に、本発明の実施形態6を図面に基づいて詳細に説明する。
本発明は、上記実施形態1および2について、以下のような構成としてもよい。
33 扁平管
36 フィン
36a フィン本体
36b 取付部
36c 本体部
36d 開口
40 挿入領域
41 延長領域
42 中間領域
43 突出領域
43b 平行端縁
45 切欠部
46 管挿入部
48 スペーサ
48a スペーサ本体
48b 湾曲部
48c 折れ目
48d リブ
Claims (15)
- 側面が対向するように平行に配置された複数の扁平管(33)と、
該扁平管(33)の配列方向に延びる板状に形成され、上記各扁平管(33)が直交方向に差し込まれる切欠部(45)を有する複数のフィン(36)とを備えた熱交換器であって、
上記フィン(36)は、板状のフィン本体(36a)と、上記扁平管(33)が接して該扁平管(33)を取り付ける取付部(36b)とを備える一方、
上記フィン本体(36a)は、板状の本体部(36c)と、上記フィン本体(36a)の一部を折り曲げて形成されて上記本体部(36c)に連続し且つ上記各フィン(36)の間隔を保持する複数のスペーサ(48)とを備えている
ことを特徴とする熱交換器。 - 請求項1において、
上記フィン本体(36a)は、扁平管(33)が挿入される挿入領域(40)と、該挿入領域(40)の空気流れ方向の一端に連続し且つ上記挿入領域(40)を繋ぐ延長領域(41)とが形成され、
上記スペーサ(48)は、上記挿入領域(40)と延長領域(41)の双方に形成されている
ことを特徴とする熱交換器。 - 請求項2において、
上記フィン(36)は、空気が上記挿入領域(40)から上記延長領域(41)に向かって流れるように形成され、
上記延長領域(41)のスペーサ(48)は、上記挿入領域(40)のスペーサ(48)の風下側の真直後方に配置されている
ことを特徴とする熱交換器。 - 請求項2において、
上記フィン(36)は、空気が上記挿入領域(40)から上記延長領域(41)に向かって流れるように形成され、
上記延長領域(41)のスペーサ(48)は、上記扁平管(33)の後方に配置されている
ことを特徴とする熱交換器。 - 請求項3または4において、
上記挿入領域(40)のスペーサ(48)は、上記フィン本体(36a)より直角に折れ曲がる平板状のスペーサ本体(48a)が形成され、
上記スペーサ(48)は、空気流れに対して斜めに傾斜するように形成されている
ことを特徴とする熱交換器。 - 請求項3~5の何れか1項において、
上記スペーサ(48)は、フィン本体(36a)の一部を切り起こして形成されている
ことを特徴とする熱交換器。 - 請求項6において、
上記挿入領域(40)のスペーサ(48)は、風上側から風下側に切り起こされ、
上記延長領域(41)のスペーサ(48)は、風下側から風上側に切り起こされている
ことを特徴とする熱交換器。 - 請求項3~7の何れか1項において、
上記挿入領域(40)は、扁平管(33)の間に位置する中間領域(42)と、該中間領域(42)から延長領域(41)と反対側の風上側に突出する突出領域(43)とが形成され、
上記挿入領域(40)のスペーサ(48)は、上記扁平管(33)の間の中心線が通る中央部上において上記突出領域(43)に形成されている
ことを特徴とする熱交換器。 - 請求項2または4において、
上記挿入領域(40)は、扁平管(33)の間に位置する中間領域(42)と、該中間領域(42)から延長領域(41)と反対側の風上側に突出する突出領域(43)とが形成され、
上記挿入領域(40)のスペーサ(48)は、上記突出領域(43)の端縁で且つ空気流れと平行な平行端縁(43b)から折曲げ形成されている
ことを特徴とする熱交換器。 - 請求項9において、
上記挿入領域(40)のスペーサ(48)は、フィン本体(36a)より直角に折れ曲がる平板状のスペーサ本体(48a)が形成され、
上記スペーサ(48)は、空気流れと平行に形成されている
ことを特徴とする熱交換器。 - 請求項1~10の何れか1項において、
上記スペーサ(48)は、先端が長辺となる台形状に形成されている
ことを特徴とする熱交換器。 - 請求項1~11の何れか1項において、
上記スペーサ(48)には、該スペーサ(48)の突出方向に延びるリブ(48d)が形成されている
ことを特徴とする熱交換器。 - 請求項12において、
上記リブ(48d)は、上記フィン本体(36a)の本体部(36c)から上記スペーサ(48)に亘って形成されている
ことを特徴とする熱交換器。 - 請求項6~8の何れか1項において、
上記スペーサ(48)は、相隣る上記フィン本体(36a)に対し、先端部が上記スペーサ(48)の切起こしに対応して上記フィン本体(36a)に形成された開口(36d)よりずれている
ことを特徴とする熱交換器。 - 請求項1~14の何れか1項に記載の熱交換器(30)が設けられた冷媒回路(20)を備え、
上記冷媒回路(20)において冷媒を循環させて冷凍サイクルを行う
ことを特徴とする空気調和機。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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KR1020137021959A KR101451055B1 (ko) | 2011-01-21 | 2012-01-23 | 열교환기 및 공기 조화기 |
US13/979,108 US20130284416A1 (en) | 2011-01-21 | 2012-01-23 | Heat exchanger and air conditioner |
AU2012208122A AU2012208122B2 (en) | 2011-01-21 | 2012-01-23 | Heat exchanger and air conditioner |
ES12737117.7T ES2558783T3 (es) | 2011-01-21 | 2012-01-23 | Intercambiador de calor y acondicionador de aire |
CN201280005244.8A CN103403487B (zh) | 2011-01-21 | 2012-01-23 | 热交换器及空调机 |
EP12737117.7A EP2667140B1 (en) | 2011-01-21 | 2012-01-23 | Heat exchanger and air conditioner |
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US (1) | US20130284416A1 (ja) |
EP (1) | EP2667140B1 (ja) |
JP (1) | JP5177307B2 (ja) |
KR (1) | KR101451055B1 (ja) |
CN (1) | CN103403487B (ja) |
AU (1) | AU2012208122B2 (ja) |
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KR101471141B1 (ko) * | 2012-08-30 | 2014-12-09 | 히다카 세이키 가부시키가이샤 | 편평한 튜브용 핀의 제조 장치 |
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USD775315S1 (en) * | 2012-08-02 | 2016-12-27 | Mitsubishi Electric Corporation | Fin-plate for heat exchanger |
USD749201S1 (en) * | 2012-08-02 | 2016-02-09 | Mitsubishi Electric Corporation | Fin-plate for heat exchanger |
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- 2012-01-23 AU AU2012208122A patent/AU2012208122B2/en not_active Ceased
- 2012-01-23 EP EP12737117.7A patent/EP2667140B1/en not_active Not-in-force
- 2012-01-23 KR KR1020137021959A patent/KR101451055B1/ko not_active IP Right Cessation
- 2012-01-23 CN CN201280005244.8A patent/CN103403487B/zh not_active Expired - Fee Related
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KR101471132B1 (ko) * | 2012-08-21 | 2014-12-09 | 히다카 세이키 가부시키가이샤 | 편평한 튜브용 핀의 제조 장치 |
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Also Published As
Publication number | Publication date |
---|---|
KR20130127500A (ko) | 2013-11-22 |
CN103403487A (zh) | 2013-11-20 |
EP2667140B1 (en) | 2015-10-28 |
US20130284416A1 (en) | 2013-10-31 |
KR101451055B1 (ko) | 2014-10-16 |
EP2667140A4 (en) | 2014-07-09 |
CN103403487B (zh) | 2015-11-25 |
JP5177307B2 (ja) | 2013-04-03 |
AU2012208122B2 (en) | 2015-05-28 |
JP2012163318A (ja) | 2012-08-30 |
EP2667140A1 (en) | 2013-11-27 |
AU2012208122A1 (en) | 2012-07-26 |
ES2558783T3 (es) | 2016-02-08 |
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