Heat transfer fin and fin-tube heat exchanger
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F28D-001/04
F28F-001/20
F28F-001/30
F28F-001/14
출원번호
US-0297163
(2007-04-04)
등록번호
US-8505618
(2013-08-13)
우선권정보
JP-2006-117591 (2006-04-21)
국제출원번호
PCT/JP2007/057547
(2007-04-04)
§371/§102 date
20081014
(20081014)
국제공개번호
WO2007/122996
(2007-11-01)
발명자
/ 주소
Ogawa, Osamu
Komori, Kou
Hayashi, Hiroki
출원인 / 주소
Panasonic Corporation
대리인 / 주소
Hamre, Schumann, Mueller & Larson, P.C.
인용정보
피인용 횟수 :
1인용 특허 :
2
초록▼
A fin (3) of a fin-tube heat exchanger (1) has protuberances (5) each disposed between two adjacent heat transfer tubes (2, 2) and holes 8 (cut-outs) each formed upstream of the protuberances (5). Each of the protuberances (5) has, as an upstream portion adjacent to the hole (8), a wing portion (6)
A fin (3) of a fin-tube heat exchanger (1) has protuberances (5) each disposed between two adjacent heat transfer tubes (2, 2) and holes 8 (cut-outs) each formed upstream of the protuberances (5). Each of the protuberances (5) has, as an upstream portion adjacent to the hole (8), a wing portion (6) tapering toward an upstream side.
대표청구항▼
1. A heat transfer fin for use in a fin-tube heat exchanger for exchanging heat between a first fluid and a second fluid, comprising: a plurality of heat transfer tube through-holes to which heat transfer tubes for passing the second fluid are to be fitted, the plurality of heat transfer tube throug
1. A heat transfer fin for use in a fin-tube heat exchanger for exchanging heat between a first fluid and a second fluid, comprising: a plurality of heat transfer tube through-holes to which heat transfer tubes for passing the second fluid are to be fitted, the plurality of heat transfer tube through-holes being provided at regular intervals along a predetermined row direction intersecting a flow direction of the first fluid;a protuberance protruding from a surface of the fin, the protuberance being provided between two adjacent ones of the heat transfer tube through-holes; anda cut-out formed upstream of the protuberance in the flow direction of the first fluid, wherein:the protuberance has, as an upstream portion adjacent to the cut-out, a wing portion tapering toward an upstream side;each through-hole of the plurality of heat transfer tube through-holes is a through-hole that is formed at a position immediately adjacent to a leading edge portion of the heat transfer fin; anda portion or an entirety of the wing portion is located upstream of a line passing through respective centers of the plurality of heat transfer tube through-holes, with respect to the flow direction of the first fluid. 2. The heat transfer fin according to claim 1, wherein: the protuberance is a remaining portion after the cut-out is formed in such a manner that the wing portion is formed in an original protuberance that is a substantially elliptical hump or a substantially circular hump protruding from a fin basal plane; anda tangent plane to an apex of the substantially elliptical hump or the substantially circular hump is parallel to the fin basal plane. 3. The heat transfer fin according to claim 1, wherein the protuberance is a remaining portion after the cut-out is formed in such a manner that the wing portion is formed in an original protuberance that is a substantially elliptic cone protruding from a fin basal plane. 4. The heat transfer fin according to claim 1, wherein the protuberance is a remaining portion after the cut-out is formed in such a manner that the wing portion is formed in an original protuberance that is a substantially polygonal pyramid protruding from a fin basal plane. 5. The heat transfer fin according to claim 1, wherein: the protuberance protrudes from a fin basal plane; andthe wing portion is parallel to the fin basal plane. 6. The heat transfer fin according to claim 1, wherein: the protuberance protrudes from a fin basal plane; andthe wing portion slopes so that its upstream side is closer to the fin basal plane than its downstream side. 7. The heat transfer fin according to claim 1, wherein: the protuberance protrudes from a fin basal plane; andthe wing portion slopes so that its upstream side is more distant from the fin basal plane than its downstream side. 8. The heat transfer fin according to claim 1, wherein the cut-out is formed along the wing portion of the protuberance so that, when the first fluid flowing along a principal surface of the heat transfer fin reaches the protuberance, the first fluid is allowed to flow from a first principal surface side to a second principal surface side of the heat transfer fin. 9. A fin-tube heat exchanger comprising: a plurality of heat transfer fins arranged spaced apart from and parallel to each other; anda plurality of heat transfer tubes penetrating the heat transfer fins,the fin-tube heat exchanger being for exchanging heat between a first fluid flowing on surfaces of the heat transfer fins and a second fluid flowing inside the heat transfer tubes, wherein:the plurality of heat transfer tubes include a first heat transfer tube and a second heat transfer tube, both arranged in a predetermined row direction intersecting a flow direction of the first fluid;each of the heat transfer fins has a protuberance and a cut-out between the first heat transfer tube and the second heat transfer tube, the protuberance protruding from the surface of the fin and guiding the first fluid toward the first heat transfer tube and toward the second heat transfer tube, and the cut-out being formed upstream of the protuberance with respect to the flow direction of the first fluid;each protuberance has, as an upstream portion adjacent to the cut-out, a wing portion tapering toward an upstream side,each heat transfer tube is a heat transfer tube that is located at a position immediately adjacent to a leading edge portion of the heat transfer fin; anda portion or an entirety of the wing portion is located upstream of a line passing through the center of the first heat transfer tube and the center of the second heat transfer tube, with respect to the flow direction of the first fluid. 10. The fin-tube heat exchanger according to claim 9, wherein: the heat transfer tubes and the protuberances are arranged in a staggered manner when viewed in an axis direction of the heat transfer tubes; andthe protuberances are disposed between respective ones of the heat transfer tubes that are adjacent in the row direction. 11. A fin-tube heat exchanger for exchanging heat between a first fluid and a second fluid, comprising: a plurality of heat transfer fins arranged spaced apart from and parallel to each other so as to form a space for allowing the first fluid to flow therethrough; anda plurality of heat transfer tubes for allowing the second fluid to flow therethrough, the plurality of heat transfer tubes penetrating the plurality of heat transfer fins and arranged in a predetermined row direction intersecting a flow direction of the first fluid, wherein:each of the heat transfer fins has: (a) a protuberance formed between a first heat transfer tube and a second heat transfer tube that are adjacent with respect to the row direction; and (b) a hole formed along an upstream portion of the protuberance with respect to the flow direction of the first fluid so that, when the first fluid flowing along a principal surface of the heat transfer fin reaches the protuberance, the first fluid is allowed to flow from a first principal surface side to a second principal surface side of the heat transfer fin;the protuberance and the hole are mirror symmetrical with respect to a mirror plane of symmetry that contains a perpendicular bisector of a line segment, the line segment connecting a center of the first heat transfer tube and a center of the second heat transfer tube at the shortest distance;a boundary line between the protuberance and the hole, that is observed when the heat transfer fin is viewed in plan, forms a protruding shape toward an upstream side with respect to the flow direction of the first fluid;each protuberance has, as the upstream portion whose contour is defined by the boundary line, a wing portion whose width along the row direction decreases toward the upstream side with respect to the flow direction of the first fluid,each heat transfer tube is a heat transfer tube that is located at a position immediately adjacent to a leading edge portion of the heat transfer fin; anda portion or an entirety of the wing portion is located upstream of a line passing through the center of the first heat transfer tube and the center of the second heat transfer tube, with respect to the flow direction of the first fluid. 12. The fin-tube heat exchanger according to claim 11, wherein only one protuberance is formed between the first heat transfer tube and the second heat transfer tube. 13. The fin-tube heat exchanger according to claim 11, wherein a planar image of the protuberance and the hole as a whole shows an elliptical shape, a circular shape, or a polygonal shape. 14. The heat transfer fin according to claim 1, wherein: when the plurality of heat transfer tube through-holes are defined as a plurality of first row heat transfer tube through-holes, the protuberance is defined as a first row protuberance, and a distance between centers of two of the first row heat transfer tube through-holes that are adjacent in the row direction is defined as a tube pitch, the heat transfer fin further comprises a plurality of second row heat transfer tube through-holes to which the heat transfer tubes in a second row for passing the second fluid are to be fitted, the plurality of second row heat transfer tube through-holes being provided at regular intervals along the row direction;a second row protuberance protruding from a surface of the fin, the second row protuberance being provided between two adjacent ones of the second row heat transfer tube through-holes; anda cut-out formed upstream of the second row protuberance in the flow direction of the first fluid;the plurality of first row heat transfer tube through-holes and the plurality of second row heat transfer tube through-holes are staggered relative to each other in the row direction by ½ of the tube pitch;the second row protuberance further comprises a wing portion tapering toward an upstream side as an upstream portion adjacent to the cut-out; anda portion or an entirety of the wing portion of the second row protuberance is located upstream of a line passing through respective centers of the plurality of second row heat transfer tube through-holes, with respect to the first fluid. 15. The heat transfer fin according to claim 14, wherein in: each of the first and second row protuberances is a remaining portion after the cut-out is formed in such a manner that the wing portion is formed in a hump protruding from a fin basal plane before forming of the cut-out; andthe hump that becomes a foundation of the first row protuberance and the hump that becomes a foundation of the second row protuberance partially overlap with each other, when viewed in the row direction. 16. The fin-tube heat exchanger according to claim 9, wherein: when the plurality of heat transfer tubes are defined as a plurality of first row heat transfer tubes, the protuberance is defined as a first row protuberance, and a distance between centers of two of the first row heat transfer tubes that are adjacent in the row direction is defined as a tube pitch, the fin-tube heat exchanger further comprises a plurality of second row heat transfer tubes for passing the second fluid, the plurality of second row heat transfer tubes penetrating the plurality of heat transfer fins and being arranged in the row direction;a second row protuberance protruding from a surface of the fin, the second row protuberance being provided between two adjacent ones of the second row heat transfer tubes; anda cut-out formed upstream of the second row protuberance in the flow direction of the first fluid;the plurality of first row heat transfer tubes and the plurality of second row heat transfer tubes are staggered relative to each other in the row direction by ½ of the tube pitch;the second row protuberance further comprises a wing portion tapering toward an upstream side as an upstream portion adjacent to the cut-out; anda portion or an entirety of the wing portion of the second row protuberance is located upstream of a line passing through respective centers of the plurality of second row heat transfer tubes, with respect to the first fluid. 17. The fin-tube heat exchanger according to claim 11, wherein: when the plurality of heat transfer tubes are defined as a plurality of first row heat transfer tubes, the protuberance is defined as a first row protuberance, and a distance between centers of two of the first row heat transfer tubes that are adjacent in the row direction is defined as a tube pitch, the fin-tube heat exchanger further comprises a plurality of second row heat transfer tubes for passing the second fluid, the plurality of heat transfer tubes penetrating the plurality of heat transfer fins and being arranged in the row direction;a second row protuberance protruding from a surface of the fin, the second row protuberance being provided between two adjacent ones of the second row heat transfer tubes; anda hole formed along an upstream portion of the protuberance with respect to the flow direction of the first fluid;the plurality of first row heat transfer tubes and the plurality of second row heat transfer tubes are staggered relative to each other in the row direction by ½ of the tube pitch;the second row protuberance further comprises a wing portion tapering toward an upstream side as an upstream portion adjacent to the hole; anda portion or an entirety of the wing portion of the second row protuberance is located upstream of a line passing through respective centers of the plurality of second row heat transfer tubes, with respect to the first fluid. 18. The fin-tube heat exchanger according to claim 16, wherein: each of the first and second row protuberances is a remaining portion after the cut-out is formed in such a manner that the wing portion is formed in a hump protruding from a fin basal plane before forming the cut-out; andthe hump that becomes a foundation of the first row protuberance and the hump that becomes a foundation of the second row protuberance partially overlap with each other, when viewed in the row direction. 19. The fin-tube heat exchanger according to claim 17, wherein: each of the first and second row protuberances is a remaining portion after the hole is formed in such a manner that the wing portion is formed in a hump protruding from a fin basal plane before forming the hole; andthe hump that becomes a foundation of the first row protuberance and the hump that becomes a foundation of the second row protuberance partially overlap with each other, when viewed in the row direction.
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이 특허에 인용된 특허 (2)
Esformes Jack L. (Syracuse NY) Ubowski Lawrence W. (Syracuse NY), Embossed vortex generator enhanced plate fin.
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