WO2006057234A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
WO2006057234A1
WO2006057234A1 PCT/JP2005/021421 JP2005021421W WO2006057234A1 WO 2006057234 A1 WO2006057234 A1 WO 2006057234A1 JP 2005021421 W JP2005021421 W JP 2005021421W WO 2006057234 A1 WO2006057234 A1 WO 2006057234A1
Authority
WO
WIPO (PCT)
Prior art keywords
fin
rib
heat exchanger
outer edge
heat exchange
Prior art date
Application number
PCT/JP2005/021421
Other languages
French (fr)
Japanese (ja)
Inventor
Masaaki Kitazawa
Shigeharu Taira
Original Assignee
Daikin Industries, Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Priority to EP05809572A priority Critical patent/EP1830148A1/en
Priority to US11/791,539 priority patent/US20070261817A1/en
Priority to AU2005308185A priority patent/AU2005308185B2/en
Publication of WO2006057234A1 publication Critical patent/WO2006057234A1/en

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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
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their 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
    • 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
    • F28F1/26—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 being integral with the element
    • 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
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/06—Reinforcing means for fins

Definitions

  • This heat exchange includes a plurality of fins stacked at predetermined intervals, and a plurality of heat transfer tubes.
  • the plurality of heat transfer tubes are inserted through the plurality of fins at predetermined intervals.
  • the conventional heat exchanger described above condenses water generated on the surface of the fin together with the wind by guiding water droplets generated on the surface of the fin from above to below using the groove. To prevent splashing outside.
  • an object of the present invention is to prevent the condensed water generated on the surface of the fin from splashing outside.
  • it is possible to provide a heat exchange that can be smoothly guided in the downward direction and that the fins do not warp or wave, so that the person is not injured.
  • a heat exchanger includes:
  • a plate-like fin having a rib substantially parallel to the outer edge and having a through hole for passing through the plurality of heat transfer tubes;
  • the rib is arranged on the outer edge side from all the insertion holes,
  • the rib since the rib is formed on the fin, the rib forms a water conduit by surface tension. Therefore, it is difficult for condensed water to scatter.
  • the rib since 0.4 and La, the rib does not approach the outer edge of the fin, and the edge of the fin and the rib do not deform. Further, since it is La (L-D Z2-0.5), the rib does not come too close to the insertion hole, and the rib does not deform.
  • the rib width is LL [mm]
  • the fin thickness is Is t [mm] and the height of the rib is h [mm], 0.15 to LL 0.5, 0.05 ⁇ t ⁇ 0.15, and 0.5t ⁇ h ⁇ 2.5t.
  • the outer edge is inclined with respect to the vertical direction in a state where the fin is disposed in the refrigeration apparatus in use.
  • the refrigeration apparatus includes an air conditioner, a refrigerator, an ice making machine, and the like.
  • the fin force is present in the vicinity of the outer edge where it is easy to jump out. Condensed water can flow down reliably through the rib. Therefore, it is possible to reliably prevent the condensed water from jumping out the fin force.
  • the heat exchanger according to one embodiment is incorporated in an indoor unit of an air conditioner.
  • the inner diameter D force is 7.5 mm or less
  • the air flow resistance is small, and therefore, the operation condition is likely to cause water splash due to a large air volume.
  • the fins are provided with ribs having the shape and arrangement described above, even if the operation condition is caused by a large air volume, water splash from the fins can be reliably prevented.
  • the fin is provided with a cut-up! /
  • the fin is provided with a cut-and-raised portion, so that it has an advantage of high heat exchange efficiency, and on the other hand, there is no ventilation between where the cut-and-raised portion exists. Resistance variation occurs, wind speed distribution becomes uneven, and water splashes occur at high wind speeds. Force Water splash can be reliably prevented by the rib having the above shape and arrangement.
  • the rib is formed at least on the leeward side of the fin in the direction in which the heat transfer medium flows than the heat transfer tube.
  • the rib is formed on the leeward side of the fin, the condensed water generated on the fin is blown to the heat transfer medium and the fin force is scattered. Can be reliably prevented.
  • the rib is formed on the windward side of the fin in the direction in which the heat transfer medium flows, at least in the fin.
  • the rib is formed on the leeward side of the fin and the leeward side of the fin, it is possible to reliably prevent the condensed water from scattering the fin force.
  • the center of the rib does not come too close to the through hole of the heat transfer tube, and the edge of the fin and the rib may be deformed. Absent. Further, since it is La (LDZ2-0.5), the center of the rib does not come too close to the heat transfer tube passing position of the fin, and the rib does not deform.
  • the dew condensation water can flow down without any problem, and the deformation of the rib can be prevented more reliably.
  • the strength of the fins can be reduced without problems, and the fins can be integrated to improve heat exchange efficiency.
  • the condensed water can flow down without any problem and the flow of wind can be made smooth.
  • FIG. 1 is a schematic cross-sectional view of an air conditioner using a heat exchanger according to an embodiment of the present invention.
  • FIG. 3A is a diagram showing an example of a rib formed on a fin.
  • FIG. 3C is a diagram showing an example of a rib formed on the fin.
  • FIG. 1 is a schematic cross-sectional view of an air conditioner using a heat exchanger according to an embodiment of the present invention.
  • 1 is a blower fan and 2 is a heat exchanger.
  • arrow a shows the upward direction in the vertical direction when the heat exchanger ⁇ is placed in the operating air conditioner
  • arrow b shows the direction of the flow of wind as the heat transfer medium. Show.
  • FIG. 1 for simplicity, the case for housing the blower fan 1 and the heat exchanger 2 is omitted.
  • the fin 6 is inclined with respect to the vertical direction, has an outer edge and has a first portion 8 and a second portion 9 forming a portion with the bending force S, and a second portion 9 And a third portion 10 extending downward in the vertical direction.
  • the first portion 8 is located downstream of the second portion 9 in the wind flow.
  • the third portion 10 extends in a substantially vertical direction.
  • the first part 8, the second part 9 and the third part 10 have a substantially elongated rectangular cross-sectional shape.
  • a rib 15 extending substantially parallel to the longitudinal direction of the second portion 9 is formed.
  • the fin 6 thus has a rectangular portion, and the rib 15 extends along the outer edge in the longitudinal direction of the rectangular portion.
  • the rib 15 guides the condensed water generated on the surface of the fin 6 downward in the vertical direction so that the condensed water does not jump out of the fin 6.
  • Each row in the row of insertion holes arranged in two rows in the width direction of the first portion 8 is substantially parallel to the outer edge of the first portion 8 in the longitudinal direction.
  • Each row in the row of insertion holes arranged in two rows in the width direction is substantially parallel to the outer edge in the longitudinal direction of the second portion 9.
  • each row in the row of through holes arranged in two rows in the width direction of the third portion 10 is substantially parallel to the outer edge in the longitudinal direction of the third portion 10.
  • a fluid is circulated in the heat transfer tube. This heat exchange ⁇ Heat exchange is performed between the fluid that circulates inside and the wind that circulates outside the heat transfer tubes.
  • FIG. 2 is a diagram showing in detail a part of the second portion 9 of the fin 6. Specifically, FIG. 2A is a partially enlarged view of the second portion 9 of the fin 6. FIG. 2B is a part of the ⁇ ⁇ line cross-sectional view of FIG. 2A.
  • FIGS. 2 and 2 15 indicates a rib, and 22 indicates a through hole for passing through the heat transfer tube formed in the fin 6.
  • Fig. 2 (b) the arrow b indicates the wind flow.
  • FIG. 2A for the sake of simplicity, only the inner diameter of the hole 22 is shown, and the detailed opening shape of the hole is omitted.
  • the rib 15 extends substantially parallel to the outer edge 25 of the plate-like fin 6.
  • the plate-like fin 6 has a through hole 22 through which a plurality of heat transfer tubes are passed.
  • the ribs 15 are arranged on the outer edge 25 side with respect to all the through holes 22.
  • the inner diameter of the through hole 22 is D [mm]
  • the center of the through hole 22 closest to the rib 15 and the outer edge 25 are
  • L [mm] and the distance between the center of the rib 15 and the outer edge 25 is La [mm]
  • La is designed to satisfy the following equation (1).
  • the width of the rib 15 is LL [mm]
  • the plate thickness of the fin 6 is t [mm]
  • the height of the rib 15 is h [mm]
  • the fin 6 and the rib 15 are set so as to satisfy the following expressions (2), (3) and (4)!
  • the ribs 15 formed on the leeward edge of the second portion 9 which is a part of the fin 6 form a water conduit by surface tension. Therefore, the condensed water generated on the surface of the fin 6 can be guided downward in the vertical direction by the rib 15 and can be prevented from jumping out of the condensed hydraulic force S fin 6.
  • the center of the rib 15 is The outer edge 25 of the fin 6 is not too close, and the edge of the fin 6 and the rib 15 are not deformed.
  • the center of the rib 2 is not too close to the heat transfer tube passage position of the fin 6 (the through hole 22 for passing through the heat transfer tube). Does not deform.
  • the rib 15 is formed at the leeward edge of the fin 6, the condensed water generated on the fin 6 is blown away by the wind. , It can be reliably prevented from jumping out of the fin.
  • the ventilation resistance is small.
  • the driving situation is likely to cause water jumping due to large air volume.
  • the fin 6 is provided with the rib 15 having the above shape and arrangement, it is possible to reliably prevent water splashing from the fin 15 even in an operating condition with a large air flow.
  • one rib 15 substantially parallel to the outer edge 25 is formed only on the leeward side of the second portion 9 in the width direction.
  • one or a plurality of ones that are substantially parallel to the outer edge on the leeward side in the width direction of the second portion so as to satisfy the above formula (1) (preferably the above formulas (1) to (4)).
  • one or more ribs substantially parallel to the outer edge of the first part are provided on the windward side in the width direction of the first part, and the first part is provided on the leeward side in the width direction of the first part.
  • the heat transfer tubes are staggered in two rows in the width direction in the second portion 9, and one rib is formed on the leeward side of the second portion 9.
  • the heat transfer tubes are arranged in at least a part of the fin in a single row or in a zigzag manner of multiple rows of three or more rows in the width direction, and the longitudinal edges of at least a part of the fins
  • One or more ribs satisfying the formula (1) may be formed.
  • the holes for passing through the heat transfer tubes are arranged in a row in the width direction in the fin 30, and the longitudinal edge of the fin 30 on the downstream side of the wind flow indicated by the arrow c
  • One rib 32 that is substantially parallel to the outer edge of the edge may be formed in the portion.
  • the holes for passing through the heat transfer tubes are arranged in a row in the fin 40 in the width direction, and at the edge in the longitudinal direction on the upstream side of the wind flow indicated by the arrow d in the fin 40. Almost parallel to the outer edge of the edge One rib 42 may be formed. Further, as shown in FIG.
  • the holes for passing through the heat transfer tubes are arranged in the fin 50 in a row in the width direction, and the longitudinal edges of the upstream and downstream sides of the wind flow indicated by the arrow e in the fin 50 are arranged.
  • Each of the ribs 52 and 53 may be formed in the portion substantially parallel to the outer edges of these edges.
  • the holes for passing through heat transfer tubes are arranged in a staggered manner in two rows in the width direction on the fin 60, and the longitudinal direction of the fin 60 on the upstream and downstream sides of the wind flow indicated by the arrow f
  • Each of the ribs 62, 63 may be formed on the edge of each of the edges substantially parallel to the outer edges of these edges.
  • the force that forms the rib 15 on substantially the entire leeward edge of the second portion 9 a part of the leeward edge of the second portion Only a part of the outer edge of the fin may be provided with a substantially parallel rib on only a part of the outer edge of the fin.
  • the fin 6 is composed of the first part 8 and the second part 9 forming the bent part, and the third part 10, but in the present invention,
  • the fin on which the rib is formed is not limited to the shape of this embodiment, and may be any shape, such as a single plate having a flat or arcuate cross-sectional shape.
  • a groove 29 having a trapezoidal cross section is formed on the back side of the portion where the rib 15 is formed.
  • a groove other than the groove on the trapezoidal section such as a groove having a V-shaped section or a U-shaped section, may be formed on the back side of the portion where the rib is formed. Further, it is not necessary to form a groove on the back side of the portion where the rib is formed.
  • a force in which a plurality of through holes 22 are arranged in a staggered manner in the fin 6 a plurality of through holes are provided in the fin, for example, a plurality of through holes are arranged in a lattice.
  • the through-holes may be arranged by any arrangement method other than the staggered arrangement.
  • the fin 6 was not formed with a cut and raised, but in the heat exchanger of the present invention, for example, a U-shaped break is formed on a part of the fin.
  • a cut and raised piece may be provided.
  • the heat exchange efficiency has the advantage of high V ⁇ , but there is a variation in ventilation resistance between where the cuts are raised and where there is no cut and raised, resulting in uneven wind speed distribution. Water jumps at high wind speeds. Shiina Therefore, in the heat exchanger of the present invention, water splash can be reliably prevented by the rib having the above shape and arrangement. Therefore, heat exchange efficiency can be improved, and water splashing from the fins can be reliably prevented.
  • ribs may be formed on all of the plurality of fins. Further, there may be a fin in which a rib may be formed only on a part of the plurality of fins, but no rib is formed.
  • the heat exchange of the present invention is applied to an air conditioner.
  • the heat exchange of the present invention may be applied to a refrigeration apparatus other than an air conditioner, such as a refrigerator.
  • a refrigeration apparatus such as a refrigerator.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

A plurality of through holes (22) are formed on a fin (6) for penetrating heat exchanger tube, and a rib (15) extending substantially parallel to an external edge (25) of the fin (6) is formed on the fin (6). The rib (15) is arranged closer to the side of the external edge (25) than all the through holes (22). When the inner diameter of the through holes (22) is D[mm], a distance between the center of the through hole (22) closest to the rib (15) and the external edge (25) is L[mm], a distance between the center of the rib (15) and the external edge (25) is La[mm], the width of the rib (15) is LL[mm], the plate thickness of the fin (6) is t[mm], and the height of the rib (15) is h[mm], the rib (15) satisfying the following inequalities is formed on the fin (6); 0.4<La<(L-D/2-0.5), 0.15<LL<0.5, 0.05<t<0.15, and 0.5t<h<2.5t.

Description

明 細 書  Specification
熱交換器  Heat exchanger
技術分野  Technical field
[0001] 本発明は、熱交換器に関し、特に空気調和機等の冷凍装置に使用されれば好適 な熱交換器に関する。  TECHNICAL FIELD [0001] The present invention relates to a heat exchanger, and more particularly to a heat exchanger suitable for use in a refrigeration apparatus such as an air conditioner.
背景技術  Background art
[0002] 従来、熱交^^としては、特開 2000— 35296号公報に記載されているものがある  [0002] Conventionally, heat exchange ^^ is described in JP 2000-35296 A
[0003] この熱交 は、所定間隔を空けて積み重ねられた複数のフィンと、複数の伝熱 管とを備えている。 [0003] This heat exchange includes a plurality of fins stacked at predetermined intervals, and a plurality of heat transfer tubes.
[0004] 上記複数の伝熱管は、所定間隔をあけて上記複数のフィンに挿通されている。  [0004] The plurality of heat transfer tubes are inserted through the plurality of fins at predetermined intervals.
[0005] 上記フィンの幅方向の両端部には、フィンの長手方向の外縁に沿った方向に延び る溝が形成されている。上記溝は、フィンの表面に生じた結露水の水滴を、上方から 下方まで案内するようになっている。  [0005] Grooves extending in the direction along the outer edge of the fin in the longitudinal direction are formed at both ends in the width direction of the fin. The groove guides the water droplets on the fin surface from above to below.
[0006] 上記従来の熱交換器は、フィンの表面に発生する結露水の水滴を、上記溝によつ て上方から下方まで案内することによって、フィンの表面に発生する結露水が風と共 に外部に飛散することを防止して 、る。  [0006] The conventional heat exchanger described above condenses water generated on the surface of the fin together with the wind by guiding water droplets generated on the surface of the fin from above to below using the groove. To prevent splashing outside.
[0007] し力しながら、上記従来の熱交^^では、溝の形成位置力 フィンの外縁に近づき すぎたり、フィンに形成された伝熱管揷通用の挿通穴に近づきすぎたりした場合、フ インにおける溝を形成した縁部が変形したり、溝そのものが変形するという問題がある 。そして、上記溝の変形により、溝に結露水溜まりができて、結露水が鉛直方向下方 に流れに《なるという問題がある。また、フィンにおける溝を形成した縁部が変形し て波打った形状になり、人がこの波打ったフィンの外縁で怪我をするという問題があ る。  [0007] With the conventional heat exchange ^^, however, if the groove formation position force is too close to the outer edge of the fin or too close to the insertion hole for the heat transfer tube formed in the fin, There is a problem that the edge portion where the groove is formed in the inner portion is deformed or the groove itself is deformed. Then, due to the deformation of the groove, there is a problem that a condensed water pool is formed in the groove, and the condensed water flows downward in the vertical direction. In addition, there is a problem that the edge of the fin in which the groove is formed is deformed into a wavy shape, and a person is injured at the outer edge of the wavy fin.
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0008] そこで、本発明の課題は、フィンの表面上に発生した結露水を外部に飛散させない ように円滑に下方に案内できて、かつ、フィンが反ったり波打ったりすることがなくて、 人が怪我をすることがない熱交翻を提供することにある。 Accordingly, an object of the present invention is to prevent the condensed water generated on the surface of the fin from splashing outside. Thus, it is possible to provide a heat exchange that can be smoothly guided in the downward direction and that the fins do not warp or wave, so that the person is not injured.
課題を解決するための手段  Means for solving the problem
[0009] 上記課題を解決するため、この発明の熱交換器は、  In order to solve the above problems, a heat exchanger according to the present invention includes:
複数の伝熱管と、  A plurality of heat transfer tubes;
外縁に略平行なリブを有すると共に、上記複数の伝熱管を揷通する揷通穴を有す る板状のフィンと  A plate-like fin having a rib substantially parallel to the outer edge and having a through hole for passing through the plurality of heat transfer tubes;
を備え、  With
上記リブは、全ての上記挿通穴よりも上記外縁側に配置され、  The rib is arranged on the outer edge side from all the insertion holes,
上記挿通穴の内径を D [mm]とし、上記リブ（15)に最も近い上記挿通穴の中心と、 上記外縁との距離を L [mm]とし、上記リブの中心と、上記外縁との距離を La [mm] としたとき、  The inner diameter of the insertion hole is D [mm], the distance between the center of the insertion hole closest to the rib (15) and the outer edge is L [mm], and the distance between the center of the rib and the outer edge Is La [mm]
0.4<La< (L-D/2-0.5)  0.4 <La <(L-D / 2-0.5)
であることを特徴として 、る。  It is characterized by being.
[0010] 尚、上記リブの中心とは、上記リブの幅方向における中心をいう。 [0010] The center of the rib means the center of the rib in the width direction.
[0011] 本発明によれば、上記フィンに上記リブを形成しているので、上記リブが表面張力 による導水路を形成する。したがって、結露水がフィン力 飛散しにくい。 According to the present invention, since the rib is formed on the fin, the rib forms a water conduit by surface tension. Therefore, it is difficult for condensed water to scatter.
[0012] また、本発明によれば、 0.4く Laであるので、リブが、フィンの上記外縁に近づきす ぎることがなくて、フィンの縁部やリブに変形が起こることがない。また、 Laく (L-D Z2— 0.5)であるので、リブが、上記挿通穴に近づきすぎることがなくて、リブが変形 することがない。  [0012] According to the present invention, since 0.4 and La, the rib does not approach the outer edge of the fin, and the edge of the fin and the rib do not deform. Further, since it is La (L-D Z2-0.5), the rib does not come too close to the insertion hole, and the rib does not deform.
[0013] したがって、フィンに形成されたリブが変形することがないので、リブ上に結露水が 流下しにく 、部分が発生することを防止できて、フィンの表面に発生した結露水を、 上記リブに沿って速やかに下方に流下させることができる。したがって、結露水の滞 留によるフィンの熱交換の通風経路の減少に伴う通風抵抗の増大を防止できて、伝 熱性能を向上できる。また、フィンの変形が少ないため、フィン倒れによる通風抵抗の 増加と異音発生を防止することができる。  [0013] Therefore, since the rib formed on the fin is not deformed, it is difficult for the condensed water to flow down on the rib, and it is possible to prevent the occurrence of a part, and the condensed water generated on the surface of the fin is It is possible to quickly flow downward along the rib. Therefore, it is possible to prevent an increase in ventilation resistance due to a decrease in the ventilation path for heat exchange of the fins due to the retention of condensed water, thereby improving the heat transfer performance. In addition, since there is little deformation of the fins, it is possible to prevent an increase in draft resistance and abnormal noise due to fin collapse.
[0014] また、一実施形態の熱交 は、上記リブの幅を LL [mm]とし、上記フィンの板厚 を t[mm]とし、上記リブの高さを h[mm]としたとき、 0.15く LLく 0.5、 0.05<t< 0. 15、および、 0.5t<h< 2.5tである。 [0014] In the heat exchange according to an embodiment, the rib width is LL [mm], and the fin thickness is Is t [mm] and the height of the rib is h [mm], 0.15 to LL 0.5, 0.05 <t <0.15, and 0.5t <h <2.5t.
[0015] 上記実施形態によれば、 0.15<LLであるので、リブの変形を更に確実に防止でき 、また、 LLく 0.5であるので、結露水を問題なく下方に流下させることができる。また 、 0.05く tであるので、フィンの強度を問題がないものにすることができ、また、 tく 0. 15であるので、フィンの集積性を大きくできて、熱交換効率を優れたものにすることが できる。また、 0.5t<hであるので、結露水を問題なく下方に流下させることができ、ま た、 h< 2.5tであるので、風がリブに衝突して乱流等を発生することを防止できて、風 の流れを円滑にすることができる。 [0015] According to the above embodiment, since 0.15 <LL, the deformation of the rib can be prevented more reliably, and since LL <0.5, the condensed water can flow down without any problem. In addition, since it is 0.05 to t, it is possible to make the strength of the fins have no problem, and since t to 0.15, it is possible to increase fin integration and to have excellent heat exchange efficiency. Can be. Also, since 0.5 t <h, the condensed water can flow down without any problem, and h <2.5 t, preventing wind from colliding with the ribs and generating turbulence. And the flow of wind can be smoothed.
[0016] また、一実施形態の熱交換器は、上記フィンが、使用状態の冷凍装置に配置され ている状態で、上記外縁は、鉛直方向に対して傾斜している。 [0016] In the heat exchanger according to an embodiment, the outer edge is inclined with respect to the vertical direction in a state where the fin is disposed in the refrigeration apparatus in use.
[0017] 上記冷凍装置とは、空気調和機や冷蔵庫や製氷機等を!、う。 [0017] The refrigeration apparatus includes an air conditioner, a refrigerator, an ice making machine, and the like.
[0018] 上記実施形態によれば、上記フィンが使用状態の冷凍装置に配置されている状態 で、上記外縁が鉛直方向に対して傾斜しているので、フィン力 飛び出し易い上記 外縁付近に存在する結露水を、上記リブを通じて確実に下方に流下させることができ る。したがって、結露水がフィン力も飛び出すことを確実に防止できる。 [0018] According to the embodiment, since the outer edge is inclined with respect to the vertical direction in a state where the fin is arranged in the refrigeration apparatus in use, the fin force is present in the vicinity of the outer edge where it is easy to jump out. Condensed water can flow down reliably through the rib. Therefore, it is possible to reliably prevent the condensed water from jumping out the fin force.
[0019] また、一実施形態の熱交換器は、空気調和機の室内機に組み込まれている。 [0019] In addition, the heat exchanger according to one embodiment is incorporated in an indoor unit of an air conditioner.
[0020] 上記実施形態によれば、室内につゆ飛びが発生することを防止できる。 [0020] According to the above embodiment, it is possible to prevent the occurrence of splashing in the room.
[0021] また、一実施形態の熱交翻は、上記挿通穴の上記内径 Dが、 7.5mm以下である [0021] Further, in the heat exchange of one embodiment, the inner diameter D of the insertion hole is 7.5 mm or less.
[0022] 上記内径 D力 7.5mm以下である場合、通風抵抗が小さいため大風量による水飛 びが生じやすい運転状況におかれる。しかし、上記フィンには、上記形状および配置 のリブが設けられているので、大風量による運転状況におかれたとしても、フィンから の水飛びを確実に防止できる。 [0022] When the inner diameter D force is 7.5 mm or less, the air flow resistance is small, and therefore, the operation condition is likely to cause water splash due to a large air volume. However, because the fins are provided with ribs having the shape and arrangement described above, even if the operation condition is caused by a large air volume, water splash from the fins can be reliably prevented.
[0023] また、一実施形態の熱交翻は、上記フィンには、切り起こしが設けられて！/、る。 [0023] In addition, according to one embodiment of the present invention, the fin is provided with a cut-up! /
[0024] 上記実施形態によれば、上記フィンには、切り起こしが設けられているので、熱交 換効率が高 、と 、う利点を有する一方、切り起こしの有る所と無 、所で通風抵抗のバ ラツキが生じて、風速分布にむらが生じて、風速の速い所で水飛びが生じようとする 力 上記形状および配置のリブによって確実に水飛びを防止できる。 [0024] According to the above embodiment, the fin is provided with a cut-and-raised portion, so that it has an advantage of high heat exchange efficiency, and on the other hand, there is no ventilation between where the cut-and-raised portion exists. Resistance variation occurs, wind speed distribution becomes uneven, and water splashes occur at high wind speeds. Force Water splash can be reliably prevented by the rib having the above shape and arrangement.
[0025] また、一実施形態の熱交換器は、上記リブは、少なくとも上記フィンにおける上記伝 熱管よりも伝熱媒体が流れる方向の風下側に形成されている。  [0025] In the heat exchanger according to an embodiment, the rib is formed at least on the leeward side of the fin in the direction in which the heat transfer medium flows than the heat transfer tube.
[0026] 上記実施形態によれば、上記リブが上記フィンの上記風下側に形成されているの で、上記フィン上に発生した結露水が伝熱媒体にとばされて、フィン力 飛散するの を確実に防止できる。  [0026] According to the embodiment, since the rib is formed on the leeward side of the fin, the condensed water generated on the fin is blown to the heat transfer medium and the fin force is scattered. Can be reliably prevented.
[0027] また、一実施形態の熱交換器は、上記リブは、少なくとも上記フィンにおける上記伝 熱管よりも伝熱媒体が流れる方向の風上側に形成されている。  [0027] In the heat exchanger according to an embodiment, the rib is formed on the windward side of the fin in the direction in which the heat transfer medium flows, at least in the fin.
[0028] 上記実施形態によれば、上記リブが上記フィンの上記風上側に形成されているの で、上記フィンの風上側の部分に発生すると共に、表面張力によって粒状になって V、る結露水が、フィンの風上側の縁部力 飛散することを防止できる。  [0028] According to the embodiment, since the rib is formed on the windward side of the fin, the rib is generated on the windward side of the fin and becomes granular due to surface tension. Water can be prevented from splashing the edge force on the windward side of the fin.
[0029] また、一実施形態の熱交換器は、上記リブは、上記フィンにおける上記伝熱管より も伝熱媒体が流れる方向の風上側、および、上記フィンにおける上記伝熱管よりも伝 熱媒体が流れる方向の風下側に形成されている。  [0029] Further, in the heat exchanger according to an embodiment, the rib has an upwind side in a direction in which the heat transfer medium flows in the fins more than the heat transfer tubes, and the heat transfer medium in the fins than the heat transfer tubes. It is formed on the leeward side in the flowing direction.
[0030] 上記実施形態によれば、上記リブが上記フィンの風下側および上記フィンの風上 側に形成されているので、結露水が上記フィン力も飛散するのを確実に防止できる。 発明の効果  [0030] According to the embodiment, since the rib is formed on the leeward side of the fin and the leeward side of the fin, it is possible to reliably prevent the condensed water from scattering the fin force. The invention's effect
[0031] 本発明の熱交換器によれば、フィンにリブを形成しているので、上記リブが表面張 力による導水路を形成する。したがって、結露水が上記フィンの外に飛び出すのを防 止できる。  [0031] According to the heat exchanger of the present invention, since the rib is formed on the fin, the rib forms a water conduit by surface tension. Therefore, it is possible to prevent the condensed water from jumping out of the fin.
[0032] また、本発明によれば、 0.4く Laであるので、リブの中心が、伝熱管の揷通穴に近 づきすぎることがなくて、フィンの縁部やリブに変形が起こることがない。また、 Laく ( L DZ2— 0.5)であるので、リブの中心が、フィンの伝熱管揷通位置に近づきすぎ ることがなくて、リブが変形することがない。  [0032] Further, according to the present invention, since 0.4 and La, the center of the rib does not come too close to the through hole of the heat transfer tube, and the edge of the fin and the rib may be deformed. Absent. Further, since it is La (LDZ2-0.5), the center of the rib does not come too close to the heat transfer tube passing position of the fin, and the rib does not deform.
[0033] また、一実施形態の熱交換器によれば、 0.15<LLく 0.5であるので、結露水を問 題なく下方に流下させることができると共に、リブの変形を更に確実に防止できる。ま た、 0.05<t<0.15であるので、フィンの強度を問題がないものにすることができると 共に、フィンの集積性を大きくできて、熱交換効率を優れたものにすることができる。 また、 0.5t<h< 2.5tであるので、結露水を問題なく下方に流下させることができると 共に、風の流れを円滑にすることができる。 [0033] Further, according to the heat exchanger of one embodiment, since 0.15 <LL <0.5, the dew condensation water can flow down without any problem, and the deformation of the rib can be prevented more reliably. In addition, since 0.05 <t <0.15, the strength of the fins can be reduced without problems, and the fins can be integrated to improve heat exchange efficiency. Moreover, since 0.5 t <h <2.5 t, the condensed water can flow down without any problem and the flow of wind can be made smooth.
[0034] また、一実施形態の熱交換器によれば、上記熱交換器が、使用状態の冷凍装置に 配置されている状態で、上記外縁は、鉛直方向に対して傾斜しているので、フィン力 ら飛び出し易い上記外縁付近に存在する結露水を、上記リブを通じて確実に下方に 流下させることができて、結露水がフィン力も飛び出すことを確実に防止できる。 図面の簡単な説明 [0034] Further, according to the heat exchanger of one embodiment, since the outer edge is inclined with respect to the vertical direction in a state where the heat exchanger is disposed in the refrigeration apparatus in use, Condensed water existing near the outer edge, which tends to jump out from the fin force, can surely flow down through the rib, and the condensed water can be reliably prevented from jumping out the fin force. Brief Description of Drawings
[0035] 本発明は以下の詳細な説明と添付の図面力 より十分に理解できるであろう。添付 の図面は説明のためだけのものであって、本発明を制限するものではない。図面に おいて、  [0035] The invention will be more fully understood from the following detailed description and the accompanying drawing power. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. In the drawing,
[図 1]本発明の一実施形態の熱交換器を用いた空気調和機の概略断面図である。  FIG. 1 is a schematic cross-sectional view of an air conditioner using a heat exchanger according to an embodiment of the present invention.
[図 2A]上記実施形態の熱交換器が有するフィンの一部分を詳細に示す図である。  FIG. 2A is a diagram showing in detail a part of fins included in the heat exchanger of the above embodiment.
[図 2B]上記実施形態の熱交換器が有するフィンの一部分を詳細に示す図である。  FIG. 2B is a diagram showing in detail a part of fins included in the heat exchanger according to the embodiment.
[図 3A]フィンに形成されたリブの例を示す図である。  FIG. 3A is a diagram showing an example of a rib formed on a fin.
[図 3B]フィンに形成されたリブの例を示す図である。  FIG. 3B is a diagram showing an example of a rib formed on the fin.
[図 3C]フィンに形成されたリブの例を示す図である。  FIG. 3C is a diagram showing an example of a rib formed on the fin.
[図 3D]フィンに形成されたリブの例を示す図である。  FIG. 3D is a diagram showing an example of a rib formed on the fin.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0036] 以下、本発明を図示の形態により詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to the drawings.
[0037] 図 1は、本発明の一実施形態の熱交換器を用いた空気調和機の概略断面図であ る。図 1において、 1は送風ファン、 2は熱交^^である。また、図 1において、矢印 a は、熱交^^が使用状態の空気調和機に配置されている状態における鉛直方向上 方を示し、矢印 bは、伝熱媒体としての風の流れの方向を示している。図 1において は、簡単のため、送風ファン 1や熱交換器 2を収容しているケース等を省略している。  FIG. 1 is a schematic cross-sectional view of an air conditioner using a heat exchanger according to an embodiment of the present invention. In FIG. 1, 1 is a blower fan and 2 is a heat exchanger. Also, in Fig. 1, arrow a shows the upward direction in the vertical direction when the heat exchanger ^^ is placed in the operating air conditioner, and arrow b shows the direction of the flow of wind as the heat transfer medium. Show. In FIG. 1, for simplicity, the case for housing the blower fan 1 and the heat exchanger 2 is omitted.
[0038] この空気調和機は、送風ファン 1を回転させて、熱交 2を介して吸 、込んだ風 を、図示しな!、吹き出し口力も吹き出すようになって!/、る。  [0038] This air conditioner rotates the blower fan 1 and sucks and sucks in the air sucked in through the heat exchange 2! The blower outlet force is also blown out!
[0039] 上記熱交 2は、フィン 6と、伝熱管（図示せず）とを備えて 、る。上記フィン 6は、 図 1における紙面に垂直な方向に所定間隔をあけて複数配列されて 、る。上記フィ ン 6は、平板形状をしている。上記フィン 6は、図 1に矢印 aで示す鉛直方向上方が突 出部になるように、くの字状に折れ曲がった断面形状をしている。 [0039] The heat exchange 2 includes fins 6 and heat transfer tubes (not shown). A plurality of the fins 6 are arranged at predetermined intervals in a direction perpendicular to the paper surface in FIG. The above 6 has a flat plate shape. The fin 6 has a cross-sectional shape that is bent in a dogleg shape so that the protruding portion is in the vertical direction indicated by arrow a in FIG.
[0040] 上記フィン 6は、鉛直方向に対して傾斜して 、る外縁を有すると共に、上記折れ曲 力 Sつた部分を形成している第 1部分 8および第 2部分 9と、第 2部分 9の鉛直方向下方 に連なる第 3部分 10とを有している。図 1に示すように、上記第 1部分 8は、第 2部分 9 よりも風の流れの下流に位置している。また、第 3部分 10は、略鉛直方向に延びてい る。上記第 1部分 8、第 2部分 9および第 3部分 10は、略細長い矩形の断面形状を有 している。 [0040] The fin 6 is inclined with respect to the vertical direction, has an outer edge and has a first portion 8 and a second portion 9 forming a portion with the bending force S, and a second portion 9 And a third portion 10 extending downward in the vertical direction. As shown in FIG. 1, the first portion 8 is located downstream of the second portion 9 in the wind flow. The third portion 10 extends in a substantially vertical direction. The first part 8, the second part 9 and the third part 10 have a substantially elongated rectangular cross-sectional shape.
[0041] 上記第 2部分 9の長手方向の風下側の縁部には、上記第 2部分 9の長手方向と略 平行に延在するリブ 15が形成されている。この実施形態では、このように、フィン 6は 、矩形状の部分を有し、リブ 15は、この矩形状の部分の長手方向の外縁に沿って延 在している。上記リブ 15は、フィン 6の表面上に発生した結露水を鉛直方向下方まで 案内して、結露水がフィン 6から飛び出さな 、ようにして 、る。  [0041] On the leeward edge of the second portion 9 in the longitudinal direction, a rib 15 extending substantially parallel to the longitudinal direction of the second portion 9 is formed. In this embodiment, the fin 6 thus has a rectangular portion, and the rib 15 extends along the outer edge in the longitudinal direction of the rectangular portion. The rib 15 guides the condensed water generated on the surface of the fin 6 downward in the vertical direction so that the condensed water does not jump out of the fin 6.
[0042] 上記伝熱管は、複数配置されている。各伝熱管は、フィン 6の配列方向、すなわち 、板形状のフィン 6の表面の略法線方向（図 1における紙面に垂直な方向）に延びて いる。上記伝熱管は、所定間隔をあけて配列されている複数のフィン 6に挿通されて いる。図 1に示すように、上記伝熱管の挿通用の揷通穴は、第 1部分 8、第 2部分 9お よび第 3部分 10の夫々において、 2列に千鳥配置されている。  [0042] A plurality of the heat transfer tubes are arranged. Each heat transfer tube extends in the direction in which the fins 6 are arranged, that is, in a substantially normal direction of the surface of the plate-like fins 6 (direction perpendicular to the paper surface in FIG. 1). The heat transfer tube is inserted through a plurality of fins 6 arranged at predetermined intervals. As shown in FIG. 1, the through holes for insertion of the heat transfer tubes are staggered in two rows in each of the first portion 8, the second portion 9, and the third portion 10.
[0043] 詳細には、上記揷通穴は、第 1部分 8においては、幅方向に 2列、長手方向に 16 列配置されており、第 2部分 9においては、幅方向に 2列、長手方向に 12列配置され ている。また、上記揷通穴は、第 3部分 10においては、幅方向に 2列、長手方向に 8 列配置されている。  In detail, the through holes are arranged in the first portion 8 in two rows in the width direction and 16 rows in the longitudinal direction, and in the second portion 9 in two rows in the width direction and in the longitudinal direction. 12 rows are arranged in the direction. In addition, the through holes are arranged in the third portion 10 in two rows in the width direction and eight rows in the longitudinal direction.
[0044] 上記第 1部分 8の幅方向に 2列に配置されている挿通穴の列における各列は、第 1 部分 8の長手方向の外縁と略平行になっており、第 2部分 9の幅方向に 2列に配置さ れている挿通穴の列における各列は、第 2部分 9の長手方向の外縁と略平行になつ ている。また、上記第 3部分 10の幅方向に 2列に配置されている揷通穴の列におけ る各列は、第 3部分 10の長手方向の外縁と略平行になっている。  [0044] Each row in the row of insertion holes arranged in two rows in the width direction of the first portion 8 is substantially parallel to the outer edge of the first portion 8 in the longitudinal direction. Each row in the row of insertion holes arranged in two rows in the width direction is substantially parallel to the outer edge in the longitudinal direction of the second portion 9. In addition, each row in the row of through holes arranged in two rows in the width direction of the third portion 10 is substantially parallel to the outer edge in the longitudinal direction of the third portion 10.
[0045] 上記伝熱管の内部には、流体が流通せしめられている。この熱交^^は、伝熱管 内を流通せしめられる流体と、伝熱管の外側を流通せしめられる風との間で、熱交換 を行うようになっている。 [0045] A fluid is circulated in the heat transfer tube. This heat exchange ^^ Heat exchange is performed between the fluid that circulates inside and the wind that circulates outside the heat transfer tubes.
[0046] 図 2は、上記フィン 6の第 2部分 9の一部を詳細に示す図である。詳しくは、図 2Aは 、上記フィン 6の第 2部分 9の部分拡大図である。また、図 2Bは、図 2Aの α α線断面 図の一部である。  FIG. 2 is a diagram showing in detail a part of the second portion 9 of the fin 6. Specifically, FIG. 2A is a partially enlarged view of the second portion 9 of the fin 6. FIG. 2B is a part of the α α line cross-sectional view of FIG. 2A.
[0047] 図 2Α,図 2Βにおいて、 15は、リブを示し、 22は、フィン 6に形成された伝熱管揷通 用の揷通穴を示している。また、図 2Αにおいて、矢印 bは、風の流れを示している。 尚、図 2Aにおいては、簡単のため、穴 22の内径のみを示し、穴の詳細な開口形状 は省略するものとする。  In FIGS. 2 and 2, 15 indicates a rib, and 22 indicates a through hole for passing through the heat transfer tube formed in the fin 6. In Fig. 2 (b), the arrow b indicates the wind flow. In FIG. 2A, for the sake of simplicity, only the inner diameter of the hole 22 is shown, and the detailed opening shape of the hole is omitted.
[0048] 上記リブ 15は、板状のフィン 6の外縁 25に略平行に延びている。また、上記板状の フィン 6は、複数の伝熱管を揷通する揷通穴 22を有している。また、上記リブ 15は、 全ての揷通穴 22よりも外縁 25側に配置されている。  The rib 15 extends substantially parallel to the outer edge 25 of the plate-like fin 6. The plate-like fin 6 has a through hole 22 through which a plurality of heat transfer tubes are passed. The ribs 15 are arranged on the outer edge 25 side with respect to all the through holes 22.
[0049] この実施形態では、図 2A,図 2Bに示すように、上記揷通穴 22の内径を D [mm]と し、リブ 15に最も近い揷通穴 22の中心と、外縁 25との距離を L [mm]とし、リブ 15の 中心と、外縁 25との距離を La [mm]としたとき、 Laは、以下の（1)式を満たすように 設計されている。 In this embodiment, as shown in FIGS. 2A and 2B, the inner diameter of the through hole 22 is D [mm], and the center of the through hole 22 closest to the rib 15 and the outer edge 25 are When the distance is L [mm] and the distance between the center of the rib 15 and the outer edge 25 is La [mm], La is designed to satisfy the following equation (1).
0.4く Laく (L-D/2-0.5) · · · (1)  0.4 La (L-D / 2-0.5)
[0050] また、図 2Bに示すように、上記リブ 15の幅を LL[mm]とし、フィン 6の板厚を t[mm ]とし、リブ 15の高さを h[mm]としたとき、フィン 6およびリブ 15は以下の（2)式、 (3) 式および (4)式を満たすように設定されて!、る。 [0050] Further, as shown in FIG. 2B, when the width of the rib 15 is LL [mm], the plate thickness of the fin 6 is t [mm], and the height of the rib 15 is h [mm] The fin 6 and the rib 15 are set so as to satisfy the following expressions (2), (3) and (4)!
0.15<LL< 0.5 - - - (2)  0.15 <LL <0.5---(2)
0.05<t< 0.15 - - - (3)  0.05 <t <0.15---(3)
0.5t<h< 2.5t- - - (4)  0.5t <h <2.5t---(4)
[0051] 上記実施形態の熱交換器によれば、上記フィン 6の一部である第 2部分 9の風下の 縁部に形成されたリブ 15が、表面張力による導水路を形成する。したがって、フィン 6 の表面に発生した結露水をリブ 15によって鉛直方向下方にまで案内できて、結露水 力 Sフィン 6の外に飛び出すことを防止できる。  [0051] According to the heat exchanger of the above embodiment, the ribs 15 formed on the leeward edge of the second portion 9 which is a part of the fin 6 form a water conduit by surface tension. Therefore, the condensed water generated on the surface of the fin 6 can be guided downward in the vertical direction by the rib 15 and can be prevented from jumping out of the condensed hydraulic force S fin 6.
[0052] また、上記実施形態の熱交換器によれば、 0.4<Laであるので、リブ 15の中心が、 フィン 6の外縁 25に近づきすぎることがなくて、フィン 6の縁部やリブ 15に変形が起こ ることがない。また、 Laく（L— DZ2— 0.5)であるので、リブ 2の中心が、フィン 6の伝 熱管揷通位置 (伝熱管揷通用の揷通穴 22)に近づきすぎることがなくて、リブ 15が変 形することがない。 [0052] Further, according to the heat exchanger of the above embodiment, since 0.4 <La, the center of the rib 15 is The outer edge 25 of the fin 6 is not too close, and the edge of the fin 6 and the rib 15 are not deformed. In addition, since it is La (L—DZ2—0.5), the center of the rib 2 is not too close to the heat transfer tube passage position of the fin 6 (the through hole 22 for passing through the heat transfer tube). Does not deform.
[0053] したがって、フィン 6の縁部が変形することを防止できて、人がフィン 6の外縁で怪我 をすることを防止できる。また、フィン 6に形成されたリブ 15が変形することがないので 、リブ 2上に結露水が流下しにくい部分が発生することを防止できて、フィン 6の表面 に発生した結露水を、リブ 2に沿って速やかに鉛直方向下方に流下させることができ る。したがって、結露水の滞留によるフィン 6の熱交換の通風経路の減少に伴う通風 抵抗の増大を防止できるため、伝熱性能を向上できる。  [0053] Therefore, the edge of the fin 6 can be prevented from being deformed, and a person can be prevented from being injured at the outer edge of the fin 6. In addition, since the rib 15 formed on the fin 6 is not deformed, it is possible to prevent a portion where the condensed water does not easily flow down on the rib 2, and the condensed water generated on the surface of the fin 6 is It is possible to quickly flow down vertically along 2. Therefore, the increase in ventilation resistance due to the decrease in the ventilation path for heat exchange of the fins 6 due to the retention of condensed water can be prevented, so that the heat transfer performance can be improved.
[0054] また、上記実施形態の熱交換器によれば、 0.15<LLであるので、リブ 15の変形を 更に確実に防止でき、また、 LL< 0.5であるので、結露水を問題なく下方に流下させ ることができる。また、 0.05く tであるので、フィン 6の強度を問題がないものにするこ とができ、また、 t< 0.15であるので、フィン 6の集積性を大きくできて、熱交換効率を 優れたものにすることができる。また、 0.5t<hであるので、結露水を問題なく下方に 流下させることができ、また、 hく 2.5tであるので、風がリブ 15に衝突して乱流等を発 生することを防止できて、風の流れを円滑にすることができる。  [0054] Further, according to the heat exchanger of the above embodiment, since 0.15 <LL, deformation of the rib 15 can be further reliably prevented, and since LL <0.5, the dew condensation water can be lowered downward without any problem. It can be made to flow down. In addition, since 0.05 t, the strength of the fin 6 can be reduced without any problem, and since t <0.15, the integration of the fin 6 can be increased and the heat exchange efficiency is excellent. Can be a thing. In addition, since 0.5 t <h, the condensed water can flow downward without any problem, and h h 2.5 t, so that the wind collides with the rib 15 and generates turbulence. Can be prevented, and the flow of wind can be made smooth.
[0055] また、上記実施形態の熱交換器によれば、フィン 6が使用状態の冷凍装置に配置 されている状態で、フィン 6の外縁 25が鉛直方向に対して傾斜しているので、フィン 6 力も飛び出し易い外縁 25付近に存在する結露水を、リブ 15を通じて確実に下方に 流下させることができる。したがって、結露水がフィン力 飛び出すことを確実に防止 できる。  [0055] Further, according to the heat exchanger of the above embodiment, since the outer edge 25 of the fin 6 is inclined with respect to the vertical direction while the fin 6 is disposed in the refrigeration apparatus in use, the fin 6 Condensed water existing near the outer edge 25 where it is easy for force to flow out can be surely flowed down through the rib 15. Therefore, it is possible to reliably prevent the condensed water from jumping out of the fin force.
[0056] また、上記実施形態の熱交換器によれば、上記リブ 15がフィン 6における風下側の 縁部に形成されているので、フィン 6上に発生した結露水が風にとばされて、フィンか ら飛び出すことを確実に防止できる。  [0056] Further, according to the heat exchanger of the above embodiment, since the rib 15 is formed at the leeward edge of the fin 6, the condensed water generated on the fin 6 is blown away by the wind. , It can be reliably prevented from jumping out of the fin.
[0057] 尚、上記実施形態の熱交換器 2を、空気調和機の室内機に組み込んだ場合、室内 につゆ飛びが発生することを確実に防止できる。  [0057] When the heat exchanger 2 of the above embodiment is incorporated in an indoor unit of an air conditioner, it is possible to reliably prevent the occurrence of splashing in the room.
[0058] また、上記揷通穴 22の内径 D力 7.5mm以下である場合、通風抵抗が小さいため 大風量による水飛びが生じやすい運転状況におかれる。しかし、上記フィン 6には、 上記形状および配置のリブ 15が設けられているので、大風量による運転状況におか れたとしても、フィン 15からの水飛びを確実に防止できる。 [0058] Further, when the inner diameter D force of the through hole 22 is 7.5 mm or less, the ventilation resistance is small. The driving situation is likely to cause water jumping due to large air volume. However, since the fin 6 is provided with the rib 15 having the above shape and arrangement, it is possible to reliably prevent water splashing from the fin 15 even in an operating condition with a large air flow.
[0059] 尚、上記実施形態の熱交換器では、図 2Bに示すように、リブ 15を、上記（1)〜(4) 式を満たすように、板状のフィン 6の一方の表面 27から突出するように形成したが、こ の発明では、上記（1)式 (好ましくは上記（1)〜(4)式)を満たす複数のリブを、板状 のフィンの一方の表面力 突出するように形成しても良い。また、上記（1)式 (好ましく は上記（1)〜 (4)式)を満たす複数のリブを、板状のフィンの両方の表面 (例えば、図 2Bにお 、ては、表面 27および表面 28)力も突出するように形成しても良 、。  [0059] In the heat exchanger of the above embodiment, as shown in FIG. 2B, the rib 15 is formed from one surface 27 of the plate-like fin 6 so as to satisfy the above expressions (1) to (4). In this invention, a plurality of ribs satisfying the above formula (1) (preferably the above formulas (1) to (4)) are projected so as to project one surface force of the plate-like fin. You may form in. In addition, a plurality of ribs satisfying the above formula (1) (preferably the above formulas (1) to (4)) are arranged on both surfaces of the plate-like fins (for example, in FIG. 28) It may be formed so that the force also protrudes.
[0060] また、上記実施形態の熱交換器では、第 2部分 9の幅方向の風下側にのみ外縁 25 に略平行な一のリブ 15を形成した。しかしながら、この発明では、上記（1)式 (好まし くは上記（1)〜 (4)式)を満たすように、第 2部分の幅方向の風下側に外縁に略平行 な一乃至複数のリブを設けるのみならず、第 1部分の幅方向の風上側に、第 1部分の 外縁に略平行なリブを一乃至複数設けると共に、第 1部分の幅方向の風下側に、第 1部分の外縁に略平行なリブを一乃至複数設け、かつ、第 3部分の幅方向の風下側 に、第 3部分の外縁に略平行なリブを一乃至複数設けても良い。この場合、フィン 6か ら飛び出す結露水を確実に防止できる。  In the heat exchanger of the above embodiment, one rib 15 substantially parallel to the outer edge 25 is formed only on the leeward side of the second portion 9 in the width direction. However, in the present invention, one or a plurality of ones that are substantially parallel to the outer edge on the leeward side in the width direction of the second portion so as to satisfy the above formula (1) (preferably the above formulas (1) to (4)). In addition to providing ribs, one or more ribs substantially parallel to the outer edge of the first part are provided on the windward side in the width direction of the first part, and the first part is provided on the leeward side in the width direction of the first part. One or more ribs substantially parallel to the outer edge may be provided, and one or more ribs substantially parallel to the outer edge of the third portion may be provided on the leeward side of the third portion in the width direction. In this case, it is possible to reliably prevent the condensed water jumping out from the fin 6.
[0061] また、上記実施形態の熱交翻では、第 2部分 9に伝熱管を幅方向に 2列に千鳥 配置すると共に、第 2部分 9の風下側に一のリブを形成したが、この発明の熱交翻 では、フィンの少なくとも一部分に、伝熱管を 1列配置または幅方向に 3列以上の複 数列の千鳥配置し、かつ、このフィンの少なくとも一部分における長手方向の縁部に 、上記（1)式 (好ましくは上記（1)〜 (4)式)を満たすリブを一乃至複数形成しても良 い。  [0061] In the heat exchange of the above embodiment, the heat transfer tubes are staggered in two rows in the width direction in the second portion 9, and one rib is formed on the leeward side of the second portion 9. In the heat exchanging of the invention, the heat transfer tubes are arranged in at least a part of the fin in a single row or in a zigzag manner of multiple rows of three or more rows in the width direction, and the longitudinal edges of at least a part of the fins One or more ribs satisfying the formula (1) (preferably the above formulas (1) to (4)) may be formed.
[0062] 例えば、図 3Aに示すように、フィン 30に伝熱管揷通用の穴を幅方向に一列配置す ると共に、フィン 30における、矢印 cに示す風の流れの下流側の長手方向の縁部に、 この縁部の外縁に略平行な一のリブ 32を形成しても良い。また、図 3Bに示すように、 フィン 40に伝熱管揷通用の穴を幅方向に一列配置すると共に、フィン 40における、 矢印 dに示す風の流れの上流側の長手方向の縁部に、この縁部の外縁に略平行な 一のリブ 42を形成しても良い。また、図 3Cに示すように、フィン 50に伝熱管揷通用の 穴を幅方向に一列配置すると共に、フィン 50における、矢印 eに示す風の流れの上 流側および下流側の長手方向の縁部に、これらの縁部の外縁に略平行な各一のリ ブ 52,53を形成しても良い。また、図 3Dに示すように、フィン 60に伝熱管揷通用の穴 を幅方向に 2列に千鳥配置すると共に、フィン 60における、矢印 fに示す風の流れの 上流側および下流側の長手方向の縁部に、これら縁部の外縁に略平行な各一のリ ブ 62,63を形成しても良い。 [0062] For example, as shown in FIG. 3A, the holes for passing through the heat transfer tubes are arranged in a row in the width direction in the fin 30, and the longitudinal edge of the fin 30 on the downstream side of the wind flow indicated by the arrow c One rib 32 that is substantially parallel to the outer edge of the edge may be formed in the portion. Further, as shown in FIG. 3B, the holes for passing through the heat transfer tubes are arranged in a row in the fin 40 in the width direction, and at the edge in the longitudinal direction on the upstream side of the wind flow indicated by the arrow d in the fin 40. Almost parallel to the outer edge of the edge One rib 42 may be formed. Further, as shown in FIG. 3C, the holes for passing through the heat transfer tubes are arranged in the fin 50 in a row in the width direction, and the longitudinal edges of the upstream and downstream sides of the wind flow indicated by the arrow e in the fin 50 are arranged. Each of the ribs 52 and 53 may be formed in the portion substantially parallel to the outer edges of these edges. In addition, as shown in FIG. 3D, the holes for passing through heat transfer tubes are arranged in a staggered manner in two rows in the width direction on the fin 60, and the longitudinal direction of the fin 60 on the upstream and downstream sides of the wind flow indicated by the arrow f Each of the ribs 62, 63 may be formed on the edge of each of the edges substantially parallel to the outer edges of these edges.
[0063] また、上記実施形態の熱交換器では、第 2部分 9の風下側の縁部の略全体にリブ 1 5を形成した力 この発明では、第 2部分の風下側の縁部の一部分のみに、この一部 分の外縁に略平行なリブを設ける等、フィンの外縁の一部のみに、この一部に略平 行なリブを設けても良い。  [0063] Further, in the heat exchanger of the above-described embodiment, the force that forms the rib 15 on substantially the entire leeward edge of the second portion 9 In the present invention, a part of the leeward edge of the second portion Only a part of the outer edge of the fin may be provided with a substantially parallel rib on only a part of the outer edge of the fin.
[0064] また、上記実施形態の熱交換器では、フィン 6が、屈曲部を形成する第 1部分 8およ び第 2部分 9と、第 3部分 10とからなっていたが、この発明では、リブが形成されるフィ ンは、平形や円弧形の断面形状の一つの板から構成される等、この実施形態の形状 に限らず如何なる形状であっても良 、。  [0064] In the heat exchanger of the above embodiment, the fin 6 is composed of the first part 8 and the second part 9 forming the bent part, and the third part 10, but in the present invention, The fin on which the rib is formed is not limited to the shape of this embodiment, and may be any shape, such as a single plate having a flat or arcuate cross-sectional shape.
[0065] また、上記実施形態の熱交換器では、図 2Bに示すように、リブ 15が形成されてい る部分の裏側に、断面台形上の溝 29が形成されているが、この発明では、リブが形 成されている部分の裏側に、断面 V字形状または断面 U字形状の溝等、断面台形上 の溝以外の溝を形成しても良い。また、リブが形成されている部分の裏側に、溝を形 成しなくても良い。  Further, in the heat exchanger of the above embodiment, as shown in FIG. 2B, a groove 29 having a trapezoidal cross section is formed on the back side of the portion where the rib 15 is formed. A groove other than the groove on the trapezoidal section, such as a groove having a V-shaped section or a U-shaped section, may be formed on the back side of the portion where the rib is formed. Further, it is not necessary to form a groove on the back side of the portion where the rib is formed.
[0066] また、上記実施形態の熱交換器では、フィン 6に複数の揷通穴 22を千鳥配置した 力 この発明では、フィンに複数の揷通穴を格子配置する等、フィンに複数の揷通穴 を千鳥配置以外の配置方法で配置しても良 、。  [0066] Further, in the heat exchanger of the above embodiment, a force in which a plurality of through holes 22 are arranged in a staggered manner in the fin 6 In the present invention, a plurality of through holes are provided in the fin, for example, a plurality of through holes are arranged in a lattice. The through-holes may be arranged by any arrangement method other than the staggered arrangement.
[0067] また、上記実施形態の熱交翻では、フィン 6には、切り起こしが形成されていなか つたが、この発明の熱交換器では、フィンの一部に、例えば、コ字状の切れ目を入れ て切り起こし片を設けても良い。フィンに切り起こしを形成した場合、熱交換効率が高 Vヽと 、う利点を有する一方、切り起こしの有る所と無 、所で通風抵抗のバラツキが生 じて、風速分布にむらが生じて、風速の速い所で水飛びが生じようとする。し力しなが ら、この発明の熱交換器では、上記形状および配置のリブによって確実に水飛びを 防止できる。したがって、熱交換効率を向上させることができると共に、フィンからの水 飛びも確実に防止できる。 [0067] Further, in the heat exchange of the above embodiment, the fin 6 was not formed with a cut and raised, but in the heat exchanger of the present invention, for example, a U-shaped break is formed on a part of the fin. A cut and raised piece may be provided. When the fins are cut and raised, the heat exchange efficiency has the advantage of high V ヽ, but there is a variation in ventilation resistance between where the cuts are raised and where there is no cut and raised, resulting in uneven wind speed distribution. Water jumps at high wind speeds. Shiina Therefore, in the heat exchanger of the present invention, water splash can be reliably prevented by the rib having the above shape and arrangement. Therefore, heat exchange efficiency can be improved, and water splashing from the fins can be reliably prevented.
[0068] 尚、この発明の熱交^^では、複数のフィンの全てにリブを形成しても良い。また、 複数のフィンのうちの一部のみにリブを形成しても良ぐリブが形成されないフィンが 存在していても良い。  [0068] In the heat exchange according to the present invention, ribs may be formed on all of the plurality of fins. Further, there may be a fin in which a rib may be formed only on a part of the plurality of fins, but no rib is formed.
[0069] また、上記実施形態では、この発明の熱交 を空気調和機に適用したが、この 発明の熱交 を、冷蔵庫等、空気調和機以外の冷凍装置に適用しても良いことは 、勿論である。  [0069] In the above embodiment, the heat exchange of the present invention is applied to an air conditioner. However, the heat exchange of the present invention may be applied to a refrigeration apparatus other than an air conditioner, such as a refrigerator. Of course.
[0070] 以上、本発明の実施形態を説明したが、これは種々変更してもよいことは明らかで ある。そのような変更は、本発明の精神と範囲からの逸脱ではあるとみなされるべきで はなぐ当業者にとって自明であるような変更はすべて、次に続く特許請求の範囲の 中に含まれるものである。  [0070] Although the embodiments of the present invention have been described above, it is obvious that various modifications may be made. All such modifications as would be obvious to one of ordinary skill in the art should not be considered as a departure from the spirit and scope of the present invention, but are intended to be included within the scope of the following claims. is there.

Claims

請求の範囲 The scope of the claims
[1] 複数の伝熱管と、  [1] Multiple heat transfer tubes,
外縁 (25)に略平行なリブ（15)を有すると共に、上記複数の伝熱管を揷通する挿 通穴（22)を有する板状のフィン (6)と  A plate-like fin (6) having a rib (15) substantially parallel to the outer edge (25) and having an insertion hole (22) for passing through the plurality of heat transfer tubes;
を備え、  With
上記リブ（15)は、全ての上記揷通穴（22)よりも上記外縁 (25)側に配置され、 上記揷通穴（22)の内径を D [mm]とし、上記リブ（15)に最も近い上記揷通穴（22 )の中心と、上記外縁 (25)との距離を L [mm]とし、上記リブ（15)の中心と、上記外 縁 (25)との距離を La[mm]としたとき、  The ribs (15) are arranged closer to the outer edge (25) than all the through holes (22), and the inner diameter of the through holes (22) is D [mm]. The distance between the center of the nearest through hole (22) and the outer edge (25) is L [mm], and the distance between the center of the rib (15) and the outer edge (25) is La [mm. ]
0.4<La< (L-D/2-0.5)  0.4 <La <(L-D / 2-0.5)
であることを特徴とする熱交^^。  The heat exchange characterized by being ^^.
[2] 請求項 1に記載の熱交翻にぉ 、て、 [2] In response to the heat exchange described in claim 1,
上記リブ（15)の幅を LL [mm]とし、上記フィン（6)の板厚を t [mm]とし、上記リブ（ 15)の高さを h [mm]としたとき、  When the width of the rib (15) is LL [mm], the plate thickness of the fin (6) is t [mm], and the height of the rib (15) is h [mm]
0.15<LL< 0.5、  0.15 <LL <0.5,
0.05<t< 0.15、  0.05 <t <0.15,
および、 0.5t<h< 2.5tであることを特徴とする熱交^^。  And the heat exchange ^^ characterized by 0.5t <h <2.5t.
[3] 請求項 1に記載の熱交翻にぉ 、て、 [3] In the heat exchange according to claim 1,
上記フィン (6)が、使用状態の冷凍装置に配置されている状態で、上記外縁 (25) は、鉛直方向に対して傾斜して ヽることを特徴とする熱交^^。  The heat exchange is characterized in that the outer edge (25) is inclined with respect to the vertical direction while the fin (6) is disposed in the refrigeration apparatus in use.
[4] 請求項 3に記載の熱交換器において、 [4] In the heat exchanger according to claim 3,
空気調和機の室内機に組み込まれていることを特徴とする熱交^^。  A heat exchange that is built into an indoor unit of an air conditioner ^^.
[5] 請求項 3に記載の熱交換器において、 [5] In the heat exchanger according to claim 3,
上記揷通穴（22)の上記内径 Dが、 7.5mm以下であることを特徴とする熱交^^。  A heat exchanger characterized in that the inner diameter D of the through hole (22) is 7.5 mm or less.
[6] 請求項 3に記載の熱交換器において、 [6] In the heat exchanger according to claim 3,
上記フィンには、切り起こしが設けられて 、ることを特徴とする熱交^^。  The heat exchange ^^ characterized in that the fin is provided with a cut and raised.
PCT/JP2005/021421 2004-11-26 2005-11-22 Heat exchanger WO2006057234A1 (en)

Priority Applications (3)

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EP05809572A EP1830148A1 (en) 2004-11-26 2005-11-22 Heat exchanger
US11/791,539 US20070261817A1 (en) 2004-11-26 2005-11-22 Heat Exchanger
AU2005308185A AU2005308185B2 (en) 2004-11-26 2005-11-22 Heat exchanger

Applications Claiming Priority (2)

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JP2004-341995 2004-11-26
JP2004341995A JP2006153327A (en) 2004-11-26 2004-11-26 Heat exchanger

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EP (1) EP1830148A1 (en)
JP (1) JP2006153327A (en)
KR (1) KR100857669B1 (en)
CN (1) CN100516749C (en)
AU (1) AU2005308185B2 (en)
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Also Published As

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CN100516749C (en) 2009-07-22
AU2005308185A1 (en) 2006-06-01
KR100857669B1 (en) 2008-09-08
CN101065634A (en) 2007-10-31
AU2005308185B2 (en) 2009-05-07
KR20070074625A (en) 2007-07-12
US20070261817A1 (en) 2007-11-15
EP1830148A1 (en) 2007-09-05
JP2006153327A (en) 2006-06-15

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