JP2003294380A - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JP2003294380A JP2003294380A JP2002094699A JP2002094699A JP2003294380A JP 2003294380 A JP2003294380 A JP 2003294380A JP 2002094699 A JP2002094699 A JP 2002094699A JP 2002094699 A JP2002094699 A JP 2002094699A JP 2003294380 A JP2003294380 A JP 2003294380A
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- fluid
- casing
- heat exchanger
- transfer tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0041—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having parts touching each other or tubes assembled in panel form
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷凍機やＬＰＧの
ベーパライザー等における蒸発器に用いて好適な熱交換
器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger suitable for use as an evaporator in a refrigerator or a vaporizer for LPG.
【０００２】[0002]
【従来の技術】一般に、冷凍機の蒸発器としてブレージ
ングプレート式熱交換器がよく使用されている。このブ
レージングプレート式熱交換器は、表面に波形が形成さ
れた複数枚の伝熱プレートを積層して隣接する伝熱プレ
ート同士の衝合部をブレージングで恒久的に接合して構
成されている。通常のプレート式熱交換器と同様に、伝
熱プレート間に複数の流体流路を形成し、これら流体流
路に一次側流体と二次側流体とを交互に流通して両流体
の間で伝熱プレートを介して熱交換を行うようにしてい
る。2. Description of the Related Art Generally, a brazing plate type heat exchanger is often used as an evaporator of a refrigerator. This brazing plate type heat exchanger is configured by laminating a plurality of heat transfer plates each having a corrugated surface, and abutting portions of adjacent heat transfer plates being permanently joined by brazing. Similar to a normal plate heat exchanger, multiple fluid channels are formed between the heat transfer plates, and primary fluid and secondary fluid are alternately circulated in these fluid channels so that both fluids flow between them. Heat is exchanged through the heat transfer plate.
【０００３】[0003]
【発明が解決しようとする課題】ところで、前記ブレー
ジングプレート式熱交換器が、例えば冷水を得るための
蒸発器として使用される場合、水の凍結等によって伝熱
プレート同士の接合部が破損したり、伝熱プレートに亀
裂が生じたりすると、一次側（冷媒側）の流体流路と二
次側（冷水側）の流体流路が短絡してしまい、二次側の
流体流路を流れる水が一次側の流体流路に浸入する問題
がある。特に、フロン系冷媒を使用した冷凍機の場合、
冷凍機全体に大きな障害を与える虞を有する。また、ア
ンモニア冷媒やプロパン冷媒等の場合、冷媒が外部へ漏
洩して周囲環境の悪化や人体に悪影響を与える危険性を
有する。By the way, when the brazing plate type heat exchanger is used as an evaporator for obtaining cold water, for example, the joint portion between the heat transfer plates may be damaged due to freezing of water or the like. , If the heat transfer plate is cracked, the primary side (refrigerant side) fluid channel and the secondary side (cold water side) fluid channel will be short-circuited, and the water flowing in the secondary side fluid channel will There is a problem of infiltration into the fluid passage on the primary side. Especially in the case of refrigerators using CFC-based refrigerants,
There is a risk of serious damage to the entire refrigerator. Further, in the case of ammonia refrigerant, propane refrigerant, or the like, there is a risk that the refrigerant leaks to the outside and deteriorates the surrounding environment or adversely affects the human body.
【０００４】そこで、本発明は以上の課題を解決するこ
とを目的とした熱交換器を提供する。Therefore, the present invention provides a heat exchanger intended to solve the above problems.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記課題を解
決するため、以下の技術的手段を採用する。The present invention employs the following technical means in order to solve the above problems.
【０００６】請求項１記載の発明では、一次側流体が流
れる伝熱管と、前記伝熱管の外周を覆うように形成され
たケーシングと、前記ケーシング内において前記伝熱管
と交差する方向に配設され前記ケーシング内に連続した
蛇行通路を形成する１または２以上の邪魔板と、前記蛇
行通路の両端に形成された二次側流体の流体入口および
流体出口とを有することを特徴とする。According to the first aspect of the present invention, the heat transfer tube through which the primary-side fluid flows, the casing formed so as to cover the outer periphery of the heat transfer tube, and the heat transfer tube disposed in the casing in a direction intersecting with the heat transfer tube. It is characterized by having one or more baffle plates forming a continuous meandering passage in the casing, and a fluid inlet and a fluid outlet for secondary side fluid formed at both ends of the meandering passage.
【０００７】請求項２記載の発明では、前記ケーシング
の内面を前記伝熱管の外周面に近接させケーシングの内
面に形成した凹凸面の凸部を前記伝熱管の外周面に当接
させたことを特徴とする。According to the second aspect of the present invention, the inner surface of the casing is brought close to the outer peripheral surface of the heat transfer tube, and the convex portion of the uneven surface formed on the inner surface of the casing is brought into contact with the outer peripheral surface of the heat transfer tube. Characterize.
【０００８】請求項３記載の発明では、前記凹凸面が畝
状に形成され伝熱面に対して所定の角度を有することを
特徴とする。According to a third aspect of the invention, the uneven surface is formed in a ridge shape and has a predetermined angle with respect to the heat transfer surface.
【０００９】請求項４記載の発明では、前記ケーシング
が伝熱管の長手方向に長さ変更可能であることを特徴と
する。According to a fourth aspect of the invention, the casing has a length changeable in the longitudinal direction of the heat transfer tube.
【００１０】請求項５記載の発明では、伝熱管の両端
に、流体入口および流体出口を１つに集める管寄せを溶
接により接合したことを特徴とする。The invention according to claim 5 is characterized in that the heat transfer tubes are joined at their opposite ends by welding with a header for collecting the fluid inlet and the fluid outlet into one.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。図１は本発明の実施形態の熱交換器
Ａを示す斜視図、図２は図１の分解斜視図、図３は図２
のａ―ａ線における断面図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing a heat exchanger A according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG.
3 is a cross-sectional view taken along line aa of FIG.
【００１２】本実施形態の熱交換器Ａは、並列に配設さ
れた複数本の伝熱管１，１…と、この伝熱管１，１…の
外周を覆うように形成されたケーシング、即ち、伝熱管
１，１…を挟んで前後に対向して配設されたプレート
２，２および、このプレート２，２間の周縁部に配設さ
れた矩形枠状のシール部材３から構成されている。The heat exchanger A of the present embodiment has a plurality of heat transfer tubes 1, 1 ... Arranged in parallel and a casing formed so as to cover the outer circumferences of the heat transfer tubes 1, 1. The heat transfer tubes 1, 1 ... Are sandwiched between the plates 2 and 2 facing each other in the front-rear direction, and the rectangular frame-shaped seal member 3 is provided at the peripheral portion between the plates 2 and 2. .
【００１３】伝熱管１，１…は、一端（図中下端）に流
体入口４を有し、他端（図中上端）に流体出口５を有し
ており、流体入口４から流体出口５に一次側流体が流れ
る。The heat transfer tubes 1, 1 ... Have a fluid inlet 4 at one end (lower end in the figure) and a fluid outlet 5 at the other end (upper end in the figure). The primary fluid flows.
【００１４】伝熱管１，１…は、シール部材３の上下に
対向する横材３ａ，３ａ間に架設されており、その両端
部を横材３ａ，３ａから貫通突出させている。伝熱管
１，１…とシール部材３の横材３ａ，３ａはブレージン
グにより恒久的に接合されている。The heat transfer tubes 1, 1, ... Are laid between the transverse members 3a, 3a facing each other in the vertical direction of the seal member 3, and both ends thereof are projected through the transverse members 3a, 3a. The heat transfer tubes 1, 1 ... And the cross members 3a, 3a of the seal member 3 are permanently joined by brazing.
【００１５】プレート２，２は、伝熱管１，１…の長手
方向に複数枚、例えば３枚のプレート単板２ａ〜２ｃを
並列に配設して構成されており、シール部材３にブレー
ジングにより恒久的に接合されている。The plates 2 and 2 are formed by arranging a plurality of, for example, three plate single plates 2a to 2c in parallel in the longitudinal direction of the heat transfer tubes 1, 1 ... It is permanently bonded.
【００１６】プレート２，２の内面は、凸部が伝熱管
１，１…の外周面に当接する凹凸面になっており、ここ
では伝熱管１，１…に対して所定の角度を有する畝状、
例えば波形状に形成されている。The inner surfaces of the plates 2 and 2 are convex and concave so that the convex portions are in contact with the outer peripheral surfaces of the heat transfer tubes 1, 1 ... And here, the ridges having a predetermined angle with respect to the heat transfer tubes 1, 1. Shape,
For example, it is formed in a wavy shape.
【００１７】２つのプレート２，２のうちの一方のプレ
ート（図中前面側に位置するプレート）には、最上段に
位置するプレート単板２ａに流体入口６が設けられ、最
下段に位置するプレート単板２ｃに流体出口７が設けら
れている。One of the two plates 2, 2 (the plate located on the front side in the figure) is provided with a fluid inlet 6 on the plate single plate 2a located at the uppermost stage, and is located at the lowermost stage. The fluid outlet 7 is provided in the plate single plate 2c.
【００１８】シール部材３の左右に対向する縦材３ｂ，
３ｂには伝熱管１，１…の長手方向に一定の間隔で複数
枚、例えば２枚の邪魔板８，８が千鳥状に交互に配設さ
れており、この邪魔板８，８によって伝熱管１，１…が
貫通支持されるとともに、プレート２，２間を流体が左
右に蛇行してジグザグ状に流れる蛇行通路を形成してい
る。邪魔板８，８はシール部材３の縦材３ｂ，３ｂにブ
レージングにより恒久的に接合されており、プレート
２，２ともブレージングにより恒久的に接合されてい
る。Vertical members 3b facing the left and right of the seal member 3,
A plurality of, for example, two baffle plates 8 and 8 are alternately arranged in a zigzag manner in the longitudinal direction of the heat transfer pipes 1 and 3 at 3b. 1, 1 ... Are pierced and supported, and a fluid is meandered between the plates 2 and 2 to the left and right to form a zigzag passage. The baffles 8 and 8 are permanently joined by brazing to the vertical members 3b and 3b of the seal member 3, and the plates 2 and 2 are also permanently joined by brazing.
【００１９】以上の構成を有する熱交換器においては、
一次側流体を伝熱管１，１…の流体入口４，４…から流
入し、伝熱管１，１…の内部を流通させて流体出口５，
５…から流出する。一方、二次側流体をプレート２のプ
レート単板２ａに設けた流体入口６からプレート２，２
間に流入し、邪魔板８，８により蛇行させながら伝熱管
１，１…の周囲を流通させてプレート単板２ｃに設けた
流体出口７から流出する。このとき、各伝熱管１，１…
内を流通する一次側流体とプレート２，２間の伝熱管
１，１…の周囲を流通する二次側流体とが熱交換され
る。In the heat exchanger having the above structure,
The primary side fluid is introduced from the fluid inlets 4, 4 ... Of the heat transfer tubes 1, 1 ...
It flows out from 5 ... On the other hand, the secondary side fluid is supplied from the fluid inlet 6 provided in the plate single plate 2a of the plate 2 to the plates 2 and 2
, Flows through the peripheries of the heat transfer tubes 1, 1 ... While being meandering by the baffles 8 and 8 and flows out from the fluid outlet 7 provided in the plate single plate 2c. At this time, each heat transfer tube 1, 1 ...
The primary fluid flowing inside and the secondary fluid flowing around the heat transfer tubes 1, 1 between the plates 2 and 2 are heat-exchanged.
【００２０】本実施形態の熱交換器によれば、例えば、
冷水を得るための蒸発器として一次側流体にフロン、二
次側流体に水を使用して熱交換する場合、もし万一水が
凍結しても、プレート２，２とシール部材３の接合部が
破損して水が洩れ出すだけであり、強度的に優る伝熱管
１，１…は破損に至らず伝熱管１，１…に水が浸入する
ことがない。これにより冷媒系統に水が浸入することが
ないため、冷凍機全体の損害を回避することができる。According to the heat exchanger of this embodiment, for example,
When heat exchange is performed by using CFC as the primary fluid and water as the secondary fluid as an evaporator for obtaining cold water, if the water freezes, the joint between the plates 2 and 2 and the sealing member 3 Are damaged and water leaks out, and the heat transfer tubes 1, 1 ..., which are superior in strength, are not damaged and water does not enter the heat transfer tubes 1, 1. As a result, water does not enter the refrigerant system, and damage to the entire refrigerator can be avoided.
【００２１】図４は、本発明の他の実施形態を示してお
り、この実施形態は図１の熱交換器Ａを複数個、例えば
３個積層したものであり、伝熱管１，１…の下端に各伝
熱管１，１…の流体入口４，４…を１つに集合させる入
口側管寄せ９を溶接により恒久的に接合するとともに、
伝熱管１，１…の上端に各伝熱管１，１…の流体出口
５，５…を１つに集合させる出口側管寄せ１０を溶接に
より恒久的に接合している。FIG. 4 shows another embodiment of the present invention. In this embodiment, a plurality of heat exchangers A of FIG. 1, for example, three heat exchangers A are stacked, and the heat transfer tubes 1, 1 ,. At the lower end, an inlet side header 9 that gathers the fluid inlets 4, 4 of each heat transfer tube 1, 1 ... into one is permanently joined by welding, and
The outlet side header 10 that gathers the fluid outlets 5, 5 of the heat transfer tubes 1, 1 ... into one is permanently joined by welding to the upper ends of the heat transfer tubes 1, 1.
【００２２】この実施形態においては、一次側流体が入
口側管寄せ９から各伝熱管１，１…内に流入され、各伝
熱管１，１…を通過して出口側管寄せ１０に寄せ集めら
れて流出される。In this embodiment, the primary-side fluid flows into the heat transfer tubes 1, 1 ... From the inlet-side header 9, passes through the heat-transfer tubes 1, 1, ... It will be leaked.
【００２３】この実施形態によれば、伝熱管１，１…の
流体入口４，４…および流体出口５，５…に入口側管寄
せ９および出口側管寄せ１０を溶接により接合したこと
により、一次側流体がブレージング部分に接触すること
がなく、銅および銅合金が使用することができないアン
モニア等の流体を一次側流体として使用する場合でも、
高価なニッケルろう材でブレージングする必要がなく、
安価な銅ろう材でブレージングすることができる。According to this embodiment, the inlet side header 9 and the outlet side header 10 are joined by welding to the fluid inlets 4, 4 ... And the fluid outlets 5, 5 ... Of the heat transfer tubes 1, 1. Even when using a fluid such as ammonia that cannot be used by copper and copper alloys as the primary fluid, the primary fluid does not contact the brazing part,
No need to braze with expensive nickel brazing material,
It can be brazed with an inexpensive copper brazing material.
【００２４】以上、本発明の実施形態について説明した
が、本発明はこのような実施形態以外に種々の変更が可
能である。例えば、ケーシングを構成するシール部材３
を伝熱管１，１…の長手方向に対して長さ変更可能にす
るとともに、それに応じてプレート２，２のプレート単
板の枚数を変更すことも可能である。これにより、伝熱
管１，１…の長さを任意に設定することが可能である。Although the embodiment of the present invention has been described above, the present invention can be modified in various ways other than the embodiment. For example, the seal member 3 that constitutes the casing
It is also possible to change the length of the heat transfer tubes 1, 1 ... With respect to the longitudinal direction and to change the number of single plates of the plates 2 and 2 accordingly. As a result, the length of the heat transfer tubes 1, 1 ... Can be arbitrarily set.
【００２５】また、伝熱管１，１…の内部にねじれ板等
の乱流促進物や伝熱面積を増大させるためのフィンを取
付けることも可能である。Further, it is possible to mount turbulent flow promoting substances such as twisted plates and fins for increasing the heat transfer area inside the heat transfer tubes 1, 1.
【００２６】[0026]
【発明の効果】以上説明したように、本発明よれば、例
えば、冷水を得るための蒸発器として使用する場合、水
の凍結等によりブレージング部分が破損しても、一次側
流体の冷媒が流れる冷媒系統に二次側流体の水が浸入す
ることがなく、冷凍機全体の損害を回避することができ
る。As described above, according to the present invention, when used as an evaporator for obtaining cold water, for example, even if the brazing portion is damaged due to freezing of water, the refrigerant of the primary fluid flows. Water of the secondary fluid does not enter the refrigerant system, and damage to the entire refrigerator can be avoided.
【００２７】また、プレートの内面、ケーシングの内面
を伝熱管に対して所定の角度を有する畝状の凹凸面とし
たから、このケーシング内面の凹凸面と伝熱管の外周面
によって流体の境膜伝熱係数の増大が図れ、良好な熱交
換効果を得ることができる。Further, since the inner surface of the plate and the inner surface of the casing are made into a ridge-shaped uneven surface having a predetermined angle with respect to the heat transfer tube, the uneven film on the inner surface of the casing and the outer peripheral surface of the heat transfer tube are used to transfer the fluid film. The thermal coefficient can be increased and a good heat exchange effect can be obtained.
【００２８】また、ケーシングを伝熱管の長手方向に対
して長さ変更可能としたから、伝熱管の長さを任意に設
定することができ、幅広い用途に使用することができ
る。Further, since the length of the casing can be changed with respect to the longitudinal direction of the heat transfer tube, the length of the heat transfer tube can be set arbitrarily, and it can be used in a wide variety of applications.
【００２９】また、伝熱管の両端に、流体入口および流
体出口を１つに集める管寄せを溶接により接合したか
ら、安価な銅ろう材でブレージングすることができ、熱
交換器の製造コストを低減することができる。Further, since both ends of the heat transfer tube are joined together by a pipe header that collects the fluid inlet and the fluid outlet, it is possible to braze with an inexpensive copper brazing material and reduce the manufacturing cost of the heat exchanger. can do.
【図１】本発明に係る実施形態の熱交換器の斜視図。FIG. 1 is a perspective view of a heat exchanger according to an embodiment of the present invention.
【図２】図１の分解斜視図。FIG. 2 is an exploded perspective view of FIG.
【図３】図２のＡ―Ａ線における断面図。FIG. 3 is a sectional view taken along line AA of FIG.
【図４】本発明の他の実施形態を示すFIG. 4 shows another embodiment of the present invention.
１ 伝熱管 ２ プレート ３ シール部材 ４ 流体入口（一次側） ５ 流体出口（一次側） ６ 流体入口（二次側） ７ 流体出口（二次側） ９ 入口側管寄せ １０ 出口側管寄せ 1 heat transfer tube 2 plates 3 seal members 4 Fluid inlet (primary side) 5 Fluid outlet (primary side) 6 Fluid inlet (secondary side) 7 Fluid outlet (secondary side) 9 Entrance side 10 Exit side heading
Claims (5)
管の外周を覆うように形成されたケーシングと、前記ケ
ーシング内において前記伝熱管と交差する方向に配設さ
れ前記ケーシング内に連続した蛇行通路を形成する１ま
たは２以上の邪魔板と、前記蛇行通路の両端に形成され
た二次側流体の流体入口および流体出口とを有すること
を特徴とする熱交換器。1. A heat transfer tube through which a primary-side fluid flows, a casing formed so as to cover the outer circumference of the heat transfer tube, and arranged in a direction intersecting with the heat transfer tube in the casing and continuous in the casing. A heat exchanger having one or more baffle plates forming a meandering passage, and a fluid inlet and a fluid outlet for secondary side fluid formed at both ends of the meandering passage.
周面に近接させケーシングの内面に形成した凹凸面の凸
部を前記伝熱管の外周面に当接させたことを特徴とする
請求項１記載の熱交換器。2. The inner surface of the casing is brought close to the outer peripheral surface of the heat transfer tube, and the convex portion of the uneven surface formed on the inner surface of the casing is brought into contact with the outer peripheral surface of the heat transfer tube. The heat exchanger described.
して所定の角度を有することを特徴とする請求項１また
は２記載の熱交換器。3. The heat exchanger according to claim 1, wherein the uneven surface is formed in a ridge shape and has a predetermined angle with respect to the heat transfer surface.
さ変更可能であることを特徴とする請求項１乃至３いず
れかに記載の熱交換器。4. The heat exchanger according to claim 1, wherein a length of the casing is changeable in a longitudinal direction of the heat transfer tube.
口を１つに集める管寄せを溶接により接合したことを特
徴とする請求項１乃至４いずれかに記載の熱交換器。5. The heat exchanger according to any one of claims 1 to 4, wherein a pipe header that collects the fluid inlet and the fluid outlet into one is joined by welding to both ends of the heat transfer pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002094699A JP2003294380A (en) | 2002-03-29 | 2002-03-29 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002094699A JP2003294380A (en) | 2002-03-29 | 2002-03-29 | Heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003294380A true JP2003294380A (en) | 2003-10-15 |
Family
ID=29238569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002094699A Withdrawn JP2003294380A (en) | 2002-03-29 | 2002-03-29 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003294380A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008149210A (en) * | 2006-12-14 | 2008-07-03 | Kyowa Shinku Gijutsu Kk | Vapor condenser in vacuum device |
| CZ303570B6 (en) * | 2011-10-06 | 2012-12-12 | Ehrlich@Jindrich | Contact-type heat exchange apparatus |
| WO2024019095A1 (en) * | 2022-07-19 | 2024-01-25 | ダイキン工業株式会社 | Heat exchanger |
-
2002
- 2002-03-29 JP JP2002094699A patent/JP2003294380A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008149210A (en) * | 2006-12-14 | 2008-07-03 | Kyowa Shinku Gijutsu Kk | Vapor condenser in vacuum device |
| JP4717794B2 (en) * | 2006-12-14 | 2011-07-06 | 共和真空技術株式会社 | Steam condensate in vacuum equipment |
| CZ303570B6 (en) * | 2011-10-06 | 2012-12-12 | Ehrlich@Jindrich | Contact-type heat exchange apparatus |
| WO2024019095A1 (en) * | 2022-07-19 | 2024-01-25 | ダイキン工業株式会社 | Heat exchanger |
| JP7454733B2 (en) | 2022-07-19 | 2024-03-22 | ダイキン工業株式会社 | Heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20050607 |