JPS594831A - Heat exchanger element - Google Patents
Heat exchanger elementInfo
- Publication number
- JPS594831A JPS594831A JP57114219A JP11421982A JPS594831A JP S594831 A JPS594831 A JP S594831A JP 57114219 A JP57114219 A JP 57114219A JP 11421982 A JP11421982 A JP 11421982A JP S594831 A JPS594831 A JP S594831A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- exchanger element
- sheets
- heat medium
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012783 reinforcing fiber Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- 239000002759 woven fabric Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 9
- 239000004744 fabric Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 abstract description 2
- 239000004917 carbon fiber Substances 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 2
- 229920002647 polyamide Polymers 0.000 abstract description 2
- 229920000728 polyester Polymers 0.000 abstract description 2
- -1 polypropylene Polymers 0.000 abstract description 2
- 229920001155 polypropylene Polymers 0.000 abstract description 2
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 abstract 1
- 239000003566 sealing material Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000000155 melt Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/12—Tube and panel arrangements for ceiling, wall, or underfloor heating
- F24D3/122—Details
- F24D3/127—Mechanical connections between panels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/12—Tube and panel arrangements for ceiling, wall, or underfloor heating
- F24D3/14—Tube and panel arrangements for ceiling, wall, or underfloor heating incorporated in a ceiling, wall or floor
- F24D3/141—Tube mountings specially adapted therefor
- F24D3/142—Tube mountings specially adapted therefor integrated in prefab construction elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Central Heating Systems (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、温水循環型床暖房装置、その他の暖房装置
などに用いられる熱交換器要素に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat exchanger element used in hot water circulation floor heating systems, other heating systems, and the like.
熱交換器要素は、普通、熱媒体循環装置などと接続して
用いられる。熱交換器要素は、熱媒体循環装置などから
送られてくる温水などの熱媒体をその内部に通し、熱交
換を行なうことにより暖房などを行なう。The heat exchanger element is usually used in connection with a heat medium circulation device or the like. The heat exchanger element performs heating by passing a heat medium such as hot water sent from a heat medium circulation device or the like through the heat exchanger element and exchanging heat.
従来の熱交換器要素は、第１図および第２図に示すよう
に、面状の袋体ｌを備え、その下面には内部に熱媒体が
流れるよう出入口２，３が設けられている。袋体ｌの上
下壁表面は熱媒体を通さない性質を有するゴムまたは樹
脂などからなる表面シー） ４ 、４１で形成されてい
る。表面シート４゜４′の内側には織物などからなる内
部シー） ５ 、５’が設けられ、二重構造壁となって
いる。内部シー） ５ 、５１および表面シー） ４
、４’は熱溶着または接着などされて固着しているのが
普通である。袋体１内部は、熱媒体が流れるように、上
下壁間に所定の間隔を隔てさせるよう、上下にうねる波
形モノフィラメント６単独、または波形モノフィラメン
ト６およびこれと垂直に交わる直線状モノフィラメント
７からなる波形網状物などのスペーサ８を備えている。As shown in FIGS. 1 and 2, a conventional heat exchanger element includes a planar bag 1, and openings 2 and 3 are provided on the bottom surface of the bag 1 to allow a heat medium to flow therein. The upper and lower wall surfaces of the bag l are formed of surface sheets 4, 41 made of rubber, resin, or the like that does not allow heat medium to pass through. Inner sheets 5, 5' made of fabric or the like are provided inside the top sheet 4° 4', forming a double wall structure. Internal sea) 5, 51 and surface sea) 4
, 4' are usually fixed by heat welding or adhesive. Inside the bag 1, a waveform consisting of a vertically undulating waveform monofilament 6 alone or a waveform monofilament 6 and a straight monofilament 7 perpendicular thereto is provided so that a predetermined interval is left between the upper and lower walls so that the heat medium can flow. A spacer 8 such as a net-like material is provided.
９はカーペットなどの敷物である。9 is a rug such as a carpet.
このような熱交換器要素の端部は、第３図に示すように
、補強繊維１１で補強された塩化ビニルなどの樹脂シー
トからなる端部シール材１２ 、１２’を表面シート４
”、 ４’の端部１０，１０’に重ね合せて溶着し、さ
らに端部シール材１２．１２’同士をそれぞれの先端部
で重ね合せ、その接合面を熱融着してシールされている
。As shown in FIG. 3, the ends of such a heat exchanger element are covered with end sealing materials 12 and 12' made of resin sheets such as vinyl chloride reinforced with reinforcing fibers 11, and a top sheet 4.
", 4' are overlapped and welded to the ends 10, 10', and the end sealing materials 12 and 12' are overlapped at their respective tips, and the joint surfaces are heat fused and sealed. .
しかしながら、表面シー） ４ 、４’の端部１０゜１
０′と、端部シール材１２ 、１２’を接合している溶
着部１３．１３’は、熱交換器要素内のスペーサ８によ
る弾力を受けているため、熱溶着によるシールが非常に
難しい。かつ前記溶着部１３ 、１３’および端部／−
ル材の溶着部１４の３個所は、熱媒体の漏れの原因とな
りやすい。このように、熱媒体の漏れの可能性が大きい
などの理由から、熱交換器要素の端部シールに関しては
、従来信頼性が低かった。しかも、従来は、シール部材
を別に準備する必要があるので、付属部品の部品点数が
多くなるといった欠点をも有していた。However, the surface sea) 4, 4' end 10° 1
The welded portions 13 and 13' that join the end sealing materials 12 and 12' are subjected to elasticity due to the spacer 8 in the heat exchanger element, so it is very difficult to seal them by thermal welding. and the welded parts 13, 13' and the ends/-
The three welded parts 14 of the metal material are likely to cause leakage of the heat medium. As described above, end seals of heat exchanger elements have conventionally been unreliable due to the high possibility of heat medium leakage. Moreover, in the past, it was necessary to separately prepare a sealing member, so there was a drawback that the number of accessory parts increased.
このような欠点をなくするため、第４図の如く、表面シ
ート４ 、４’の両端部を延長し、端部１５゜１５＋を
重ね合わせて熱溶着することも考えられるが、この場合
、端部１５ 、１５１には内部を流れる熱媒体の圧力が
かかるので、未溶着部１６ 、１６’は膨張し、極端な
場合はこの部分で破壊が起きる可能性もあり、実際の使
用は困難であった。In order to eliminate this drawback, it is conceivable to extend both ends of the topsheets 4 and 4' as shown in Fig. 4, overlap the ends 15° and 15+, and heat weld them, but in this case, the ends Since the pressure of the heat medium flowing inside the parts 15 and 151 is applied, the unwelded parts 16 and 16' expand, and in extreme cases, there is a possibility that this part will break, making it difficult to use in practice. Ta.
この発明は、このような事情に鑑みなされたもので、強
化繊維で補強した表面シートの端部を延長し、この先端
部を積層熱溶着してシールすることにより、熱媒体漏れ
に対する信頼性を向上させ、部品点数の少ない熱交換器
要素を提供するものである。This invention was made in view of the above circumstances, and by extending the end of the top sheet reinforced with reinforcing fibers and sealing the end by laminating heat welding, reliability against heat medium leakage is improved. The present invention provides a heat exchanger element with improved performance and a reduced number of parts.
この発明は、熱媒体を通さない性質を有する２枚の壁材
が、相互間に熱媒体を通過させ得る間隔を隔てて配置さ
れることによって熱媒体を封じる壁間を構成してなる熱
交換器要素であって、上記壁材が内側に配置される織物
と、その外側を被覆する熱融着性の高分子材料シートと
からなり、２枚の壁材端部開口部は２枚の壁材それぞれ
の高分子材料シートが互に融着接合して封じられ、かつ
この封口部をつくっている高分子材料シート中には補強
繊維が混入されていることを特徴とする熱交換器要素を
要旨としている。The present invention provides a heat exchanger in which two wall materials that do not allow the heat medium to pass through are arranged at a distance that allows the heat medium to pass between them, thereby constituting a space between the walls that seals off the heat medium. The container element is made of a fabric on the inside of which the wall material is arranged, and a heat-sealable polymer material sheet covering the outside thereof, and the openings at the ends of the two wall materials are A heat exchanger element characterized in that each polymeric material sheet is fused and sealed together, and reinforcing fibers are mixed in the polymeric material sheet forming the sealing part. This is the summary.
以下、これをその実施例をあられす図面に基いて詳しく
説明する。Hereinafter, an embodiment thereof will be explained in detail based on the accompanying drawings.
第５図はこの発明の熱交換器要素の断面図を示す。図に
おいて、熱交換器要素の表面シート４゜４Ｉの両端部１
７．１７’は織物などで構成された内部シー） ５ 、
５’の端縁１８，１８１より外側へ延長され、その先端
部が積層した状態で熱溶着されている。FIG. 5 shows a cross-sectional view of a heat exchanger element of the invention. In the figure, both ends 1 of the top sheet 4゜4I of the heat exchanger element
7. 17' is an internal seam made of fabric etc.) 5,
It extends outward from the end edges 18, 181 of 5', and its tips are heat welded in a laminated state.
内部シー１−５ 、５’と表面シート４ 、４’が重合
された接合部１９ 、１９’から表面シート４ 、４’
の先端部１７．１７’にかけての部分では、表面シー）
４ 、４’内に補強繊維２０が混入され、内部を流れ
る熱媒体の圧力により変形または破壊されることのない
ように補強されている。補強繊維としては、ポリアミド
系、ポリエステル系、ポリプロピレン系。The top sheets 4, 4' are connected to the joints 19, 19' where the inner sheets 1-5, 5' and the top sheets 4, 4' are polymerized.
In the area extending to the tip 17.17', the surface seam)
Reinforcing fibers 20 are mixed inside 4 and 4' to reinforce them so that they will not be deformed or destroyed by the pressure of the heat medium flowing inside. Reinforcing fibers include polyamide, polyester, and polypropylene.
ポリ塩化ビニリデン系および炭素繊維などが使用される
。補強繊維の表面シー）ｑつ混入は、補強繊にイｔで形
成された織物１編物および不織布などを表面シートの成
形時に、シート間にはさんで熱溶着させることにより得
られるが、この方法に限定されるものではない。Polyvinylidene chloride and carbon fiber are used. Incorporation of reinforcing fibers into the surface sheet can be achieved by thermally welding knitted fabrics or non-woven fabrics formed with reinforcing fibers between the sheets when forming the top sheet, but this method It is not limited to.
このホ明にかかる熱交換器要素の表面シート端部シール
は、連続した長尺物では腿手方向のすべてに利用できる
。この場合、幅方向は従来と同様に第３図の如く、別の
端部シール材１２ 、１２’を用いてシールする。定尺
物を一枚宛作る場合は、長手方向および幅方向の両方に
この発明にかかるシール方法を適用できる。The surface sheet end seal of the heat exchanger element according to this invention can be used in all directions in the tibial direction in the case of a continuous long object. In this case, the width direction is sealed using another end sealing material 12, 12' as shown in FIG. 3, as in the conventional case. When making one sheet of fixed length, the sealing method according to the present invention can be applied to both the longitudinal direction and the width direction.
この発明にかかる熱交換器要素は、表面シート拐の先端
部を延長し、その先端部近傍を補強繊維で補強してシー
ルしたので、シール部は先端部のみとなり、シール部分
が少なくなる。したがって、従東、スペーサによる弾力
のため完全なシールが田畑とされていた表面ノートと別
のシール材とのシールがなくなり、熱媒体の漏れが著し
く減少する。長手方向の７−ルを連続的に行なうことが
できるため、工数削減ができる。別のシール拐を必要と
しないので、何州部品の点数も減少する。In the heat exchanger element according to the present invention, the tip of the surface sheet is extended and the vicinity of the tip is reinforced with reinforcing fibers for sealing, so that the sealed portion is only the tip, and the seal portion is reduced. Therefore, the seal between the surface notebook and another sealing material, which had been completely sealed due to the elasticity of the spacer, is eliminated, and leakage of the heat medium is significantly reduced. Since 7-rules in the longitudinal direction can be performed continuously, the number of man-hours can be reduced. Since no separate seal removal is required, the number of state parts is also reduced.
なお、補強繊維が混入された別の端部シール材を端面シ
ールに利用するような場合、第６図に示す如く、長手方
向と幅方向の端部シールが重なり合ったコーナ２１にお
いて、内側に位置するシール材の一部端面２２は、熱媒
体と接触している。In addition, when using another end seal material mixed with reinforcing fibers for the end seal, as shown in FIG. A partial end surface 22 of the sealing material is in contact with the heat medium.
この一部端面２２には補強繊維が露出しているので、こ
の繊維内圧熱媒体２４が浸入し、この繊維を伝って両端
面２３．２３’から外側へ漏れ出ることがある。また、
第７図に示す如く、端面シールの溶着時に樹脂が融解し
、融解した部分に補強繊維が露出する。このため、露出
した繊維内に熱媒体が浸入し、やはり両端面２３ 、２
３１から外側へ漏れ出ることがある。この対策として、
第８図および第９図に示したように、シール部の両端面
２３．２３’近傍を除き、耐圧に関係するはｙ中央部分
２５．２５’のみに補強繊維を混入するようにする。こ
のようにすると、熱媒体の漏れが防止できるのである。Since the reinforcing fibers are exposed at some of the end faces 22, the fiber internal pressure heating medium 24 may enter the fibers and leak outward from both end faces 23 and 23' along the fibers. Also,
As shown in FIG. 7, the resin melts when the end seal is welded, and reinforcing fibers are exposed in the melted portion. For this reason, the heat medium penetrates into the exposed fibers, and both end faces 23, 2
31 may leak to the outside. As a countermeasure for this,
As shown in FIGS. 8 and 9, reinforcing fibers are mixed only in the central portion 25, 25', which is related to pressure resistance, except for the vicinity of both end faces 23, 23' of the sealing part. In this way, leakage of the heat medium can be prevented.
すなわち、長手方向と幅方向の端部シールが重なり合っ
たコーナ２１において、内側に位置するシール材の一部
端面２２は、第８図にみるように補強繊維２０が露出し
ていないので、熱媒体と繊維との接触がない。そのため
、端部シールｉ’１２゜１２′の両端面２３ 、２３’
からの熱媒体の漏れがなくなる。また、シール溶着時に
、一部の樹脂が融解して補強繊維が露出しても、第９図
の如く、シール部の両端面２３．２３’奢よび２６，２
６’では補強繊維２０が露出していないので、熱媒体は
外側へ漏し出ることがない。なお、中方向の両端面２３
、２３’の他、長さ方向の両端面２７．２７’（図示
せず）および２８．２８’（図示せず）にも補強繊維を
露出させないようにしておくと、熱媒体の漏れは全く心
配なくなる。That is, at the corner 21 where the longitudinal and widthwise end seals overlap, the reinforcing fibers 20 are not exposed on the partial end surface 22 of the sealing material located on the inside, as shown in FIG. and no contact with the fibers. Therefore, both end surfaces 23, 23' of the end seal i'12°12'
There will be no leakage of heat medium from. Furthermore, even if some of the resin melts and the reinforcing fibers are exposed during seal welding, as shown in FIG.
Since the reinforcing fibers 20 are not exposed at 6', the heat medium does not leak to the outside. In addition, both end surfaces 23 in the middle direction
, 23', as well as both end faces 27.27' (not shown) and 28.28' (not shown) in the length direction, so that the reinforcing fibers are not exposed at all. No more worries.
第１図は熱交換器要素の一部を切り欠いた縦断面図、第
２図は熱交換器要素の袋体の一部を切り欠いてあられし
た斜視図、第３図は従来の熱交換器要素の端部シール状
態をあられした断面図、第４図は従来の熱交換器要素の
他の端部シール状態をあられした断面図、第５図はこの
発明の熱交換器要素の端部シール状態をあられした断面
図、第６図は従来の熱交換器要素コーナ部分の端部シー
ル状態の一部を切り欠いてあられした斜視図、第７図は
端部シール材に混入した強化繊維から熱媒体が漏れ出る
状態をあられした一部断面斜視図、第８図は熱交換器要
素のコーナ部分の端部シール状態の一部を切り欠いてあ
られした斜視図、第９図は熱交換器要素の端部シール状
態の一部を切り欠いてあられした斜視図である。
４．４′・・・表面シート１２ 、１２’・・・端部シ
ール材 １３．１３’、１４・・・溶着部 １７ 、１
７’・・・端部１９ 、１９’・・・接合部 １１．２
０・・・補強繊維 ２１・・・コーナ ２２・・・一部
端面 ２４・・・熱媒体特許出願人 松下電工株式会社
代理人 弁理士 松 本 武 彦
第１図
第３図
第４図
２
第６図
第７図Fig. 1 is a vertical sectional view with a part of the heat exchanger element cut away, Fig. 2 is a perspective view with a part of the bag body of the heat exchanger element cut away, and Fig. 3 is a conventional heat exchanger. FIG. 4 is a cross-sectional view showing the other end sealing state of a conventional heat exchanger element, and FIG. 5 is a cross-sectional view showing the end sealing state of the heat exchanger element of the present invention. Fig. 6 is a cross-sectional view showing the sealed state; Fig. 6 is a partially cutaway perspective view of the end sealing state of the corner portion of a conventional heat exchanger element; Fig. 7 is a reinforced fiber mixed in the end sealing material. FIG. 8 is a partially cutaway perspective view showing the state in which the heat medium leaks from the heat exchanger element; FIG. FIG. 2 is a partially cutaway perspective view of the container element with its end sealed. 4.4'... Surface sheet 12, 12'... End sealing material 13.13', 14... Welded part 17, 1
7'...End part 19, 19'...Joint part 11.2
0... Reinforcing fiber 21... Corner 22... Partial end face 24... Heating medium patent applicant Matsushita Electric Works Co., Ltd. Agent Patent attorney Takehiko Matsumoto Figure 1 Figure 3 Figure 4 Figure 2 Figure 6 Figure 7
Claims (1)
、相互間に熱媒体を通過させ得る間隔を隔てて配置され
ることによって熱媒体を封じる空間を構成してなる熱交
換器要素であって、上記壁材が内側に配置される織物と
、その外側を被覆する熱融着性の高分子材料シートとか
らなシ、２枚の壁材端部開口部は２枚の壁材それぞれの
高分子材料シートが互に融着接合して封じられ、かつこ
の封口部をつくっている高分子材料シート中には補強繊
維が混入されていることを特徴とする熱交換器要素。(1) A heat exchanger element in which two wall materials that do not allow the heat medium to pass through are arranged at a distance that allows the heat medium to pass between them, thereby forming a space that seals the heat medium. The above-mentioned wall material is composed of a woven fabric disposed on the inside and a heat-sealable polymeric material sheet covering the outside thereof, and the opening at the end of the two wall materials A heat exchanger element characterized in that respective polymeric material sheets are fused and sealed together, and reinforcing fibers are mixed in the polymeric material sheets forming the sealing portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57114219A JPS594831A (en) | 1982-06-30 | 1982-06-30 | Heat exchanger element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57114219A JPS594831A (en) | 1982-06-30 | 1982-06-30 | Heat exchanger element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS594831A true JPS594831A (en) | 1984-01-11 |
| JPS6153608B2 JPS6153608B2 (en) | 1986-11-18 |
Family
ID=14632201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57114219A Granted JPS594831A (en) | 1982-06-30 | 1982-06-30 | Heat exchanger element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS594831A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021103764A (en) * | 2019-12-25 | 2021-07-15 | 昭和電工パッケージング株式会社 | Heat exchanger and inner fin thereof |
-
1982
- 1982-06-30 JP JP57114219A patent/JPS594831A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021103764A (en) * | 2019-12-25 | 2021-07-15 | 昭和電工パッケージング株式会社 | Heat exchanger and inner fin thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6153608B2 (en) | 1986-11-18 |
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