JP2760777B2 - Plate heat exchanger for absorption chiller / heater - Google Patents
Plate heat exchanger for absorption chiller / heaterInfo
- Publication number
- JP2760777B2 JP2760777B2 JP8139193A JP13919396A JP2760777B2 JP 2760777 B2 JP2760777 B2 JP 2760777B2 JP 8139193 A JP8139193 A JP 8139193A JP 13919396 A JP13919396 A JP 13919396A JP 2760777 B2 JP2760777 B2 JP 2760777B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- plates
- heat exchanger
- brazing material
- heater
- 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.)
- Expired - Fee Related
Links
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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は温度の高い吸収液
（臭化リチウム液）と温度の低い吸収液（臭化リチウム
液）との熱交換において使用される吸収式冷温水機のプ
レート式熱交換器に関するものである。
【０００２】
【従来の技術】従来この種のプレート式熱交換器におい
ては、図３に示すように波形に形成されている複数枚の
プレート１、１、・・・をフレーム２、２、・・・間に
挟持し、プレートガスケット（図示せず）を設け、高温
流体を前記プレート１のスペース３、３・・・側に、低
温流体をスペース４、４・・・側にそれぞれ通過させ熱
交換をおこなうもの（例えば特公昭６２−８７１９号公
報）が公知となっている。
【０００３】
【発明が解決しようとする課題】しかしながら、前記プ
レート１はステンレス鋼、チタニウム、ハステロイ等の
材料を用いて作製され、ステンレス鋼を使用した場合に
は応力腐食割れを特に起こしやすい。更に、前記プレー
ト１の互いに重なり合う部分５にすきま腐食がおきるこ
とも考えられる。
【０００４】また、前記プレート１は力学的な力が加わ
る場合も考慮しなければならず、力が加わった場合最初
に部分５が変形したりして、あまり薄い板、軟質の材料
は不向きであった。
【０００５】本発明は上述した従来技術の課題に鑑みて
なされたものであり、応力腐食われおよびすきま腐食を
起こしにくく、かつ、丈夫で熱交換率の良好な吸収式冷
温水機のプレート式熱交換器を提供することを目的とし
たものである。
【０００６】
【課題を解決するための手段】この目的を達成するため
に、請求項１の発明は、断面が波形のプレートを複数枚
重ね合わせてこれらプレート間に交互に温度の高い吸収
液と温度の低い吸収液とを流し込むようにした吸収式冷
温水機のプレート式熱交換器において、プレートを銅系
の材料で作製し、これらのプレートの重ね合わせによっ
て接触する一方のプレートの山と他方のプレートの谷と
を銅系あるいはニッケル系のろう材で接合するようにし
たものである。
【０００７】
【０００８】請求項１の発明によれば、銅系の材料で作
製されたプレートの重ね合わせによって接触する一方の
プレートを銅系の材料で作製し、これらのプレートの重
ね合わせによって接触する山と谷とは銅系あるいはニッ
ケル系のろう材で接合される。
【０００９】
【００１０】
【発明の実施の形態】以下、本発明の実施の形態を図面
と共に説明する。図１は、本発明の実施の形態の吸収式
冷温水機のプレート式熱交換器の断面図である。１はプ
レートで、その材料は銅系であり、かつ吸収液に対して
耐食性のあるキュプロニッケル板から形成されている。
【００１１】６、７は該プレート１にプレス成形にて設
けられた山と谷、２は複数の前記プレート１を両側から
押さえておくフレームである。８は銅系（例えばBCUP、
BAg、CU−Mn、CU−Su）あるいはニッケル系のろう材
（例えばBNi）で、このろう材によって重ね合わせたプ
レート１のうち一方のプレートの山６とこの山６と対向
する他方のプレート１の谷７とが接合され、通路Ａ1、
Ａ2、Ａ3 ・・・Ａnと通路Ｂ1、Ｂ2、Ｂ3 ・・・Ｂnと
が形成される。
【００１２】図２はプレート１の正面図である。この図
２のおいて、１０はシール材の役目を果たすプレートガ
スケットである。
【００１３】前記ろう材８でプレート１の山６と谷７と
をろう付けする方法は以下のようにして行われる。ま
ず、プレート１、１・・・間にろう材で作製したシート
を挟む。次に、これらプレート１、１・・・を炉（図示
せず）の中にいれてろう材のシートを溶かす。すると、
この溶けたろう材は毛細管現象によって、図１に示すよ
うにプレート１の互いに重なり合う部分にろう材８が集
まり、図１に示す上側のプレート１の谷７と下側のプレ
ート１の山６とがろう付けされる。 このろう材８のろ
う付けによって、プレート１、１・・・間が全体的に固
定される。しかも、略筒状の２つの通路Ａ、Ｂが形成さ
れる。そして、これらの通路の一方に温度の高い吸収液
が、他方に温度の低い吸収液が、夫々流れるようにな
る。
【００１４】このような構成によって、例えば、使用す
るプレートの厚さを0.8mmから0.6mmへと薄くしても従来
装置（0.8mmの厚さのプレートを使い、このプレートの
互いに重なり合う部分はろう付けされていない）と同程
度の強度をもたせることが可能である。
【００１５】
【発明の効果】請求項１の発明によれば以下のような特
有の効果を奏する。
【００１６】波形のプレートの互いに重なり合う部分
をろう材で接合させたので、すきま腐食を起こし易いす
きま部分を塞ぐことになりすきま腐食を起こしにくくす
ることができる。
【００１７】更に、波形のプレートの互いに重なり合
う部分をろう材で接合させたので、この部分のプレート
が互いに固定され、プレートに力学的な力が加わった場
合でも変形しにくくなり、プレートの厚さを薄くするこ
とができる。
【００１８】ろう材による接合で、このろう材とプレ
ートの波形形状とによって独立した２つの通路を形成さ
せて、夫々の通路に温度差のある吸収液を夫々流すよう
にしたので、従来のような単に波形のプレートを重なり
合せた熱交換器と比較して、熱交換効率を向上させるこ
とができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in heat exchange between a high-temperature absorbing solution (lithium bromide solution) and a low-temperature absorbing solution (lithium bromide solution). The present invention relates to a plate-type heat exchanger for an absorption type water chiller / heater. 2. Description of the Related Art Conventionally, in this type of plate heat exchanger, a plurality of plates 1, 1,... Formed in a corrugated shape as shown in FIG. ..A plate gasket (not shown) is provided between the plates 1 to allow high-temperature fluid to pass through spaces 3, 3,... Of the plate 1 and low-temperature fluid to pass through spaces 4, 4,. One that performs replacement (for example, Japanese Patent Publication No. 62-8719) is known. [0003] However, the plate 1 is made of a material such as stainless steel, titanium, and Hastelloy. When stainless steel is used, stress corrosion cracking is particularly likely to occur. Furthermore, it is conceivable that crevice corrosion occurs in the overlapping portions 5 of the plate 1. [0004] The plate 1 must also consider the case where a mechanical force is applied. When the force is applied, the portion 5 is deformed first, so that a very thin plate or a soft material is not suitable. there were. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has been made in consideration of the above-mentioned problems. It is intended to provide an exchanger. In order to achieve the above object, according to the first aspect of the present invention, a plurality of plates having a corrugated cross section are superimposed on each other, and the high temperature absorption plates are alternately provided between the plates.
Absorption-type cooling in which liquid and low-temperature absorbing liquid are poured
In the plate heat exchanger of the water heater, the plate is made of copper
Made of the same material, and
The peaks of one plate and the valleys of the other plate
With copper or nickel brazing material
It is a thing. According to the first aspect of the present invention, the device is made of a copper-based material.
One contacted by the superposition of the manufactured plates
Plates are made of copper-based material and the weight of these plates
The peaks and valleys that come into contact by joining are copper or nickel.
Joined with Kel-based brazing material. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a plate-type heat exchanger of an absorption chiller / heater according to an embodiment of the present invention. Reference numeral 1 denotes a plate, which is made of a cupronickel plate made of a copper-based material and having corrosion resistance to an absorbing solution. Reference numerals 6 and 7 denote peaks and valleys provided on the plate 1 by press molding, and reference numerals 2 denote frames for holding the plurality of plates 1 from both sides. 8 is a copper type (for example, BCUP,
BAg, CU-Mn, CU-Su) or a nickel-based brazing material (for example, BNi), of one of the plates 1 superposed by the brazing material and the other plate 1 facing the mountain 6 And the valley 7 are joined, and the passage A1,
A2, A3... An and passages B1, B2, B3. FIG. 2 is a front view of the plate 1. In FIG. 2, reference numeral 10 denotes a plate gasket serving as a sealing material. The method of brazing the peaks 6 and the valleys 7 of the plate 1 with the brazing material 8 is performed as follows. First, a sheet made of a brazing material is interposed between the plates 1, 1,.... Next, the plates 1, 1,... Are placed in a furnace (not shown) to melt the sheet of brazing material. Then
Due to the capillary action, the brazing material 8 gathers at the overlapping portions of the plate 1 as shown in FIG. 1, and the valley 7 of the upper plate 1 and the crest 6 of the lower plate 1 shown in FIG. Brazed. By this brazing of the brazing material 8, the entire space between the plates 1, 1,... Is fixed. Moreover, two substantially cylindrical passages A and B are formed. Then, a high-temperature absorbent flows into one of these passages, and a low-temperature absorbent flows into the other. With such a configuration, for example, even if the thickness of the plate to be used is reduced from 0.8 mm to 0.6 mm, the conventional device (using a plate having a thickness of 0.8 mm, the portions of the plate which are overlapped with each other are soldered). (Not attached) can have the same strength. According to the first aspect of the present invention, the following specific effects can be obtained. Since the overlapping portions of the corrugated plates are joined by the brazing material, the gap portions which are apt to cause crevice corrosion are closed, so that crevice corrosion can be suppressed. Further, since the overlapping portions of the corrugated plates are joined by a brazing material, the plates in this portion are fixed to each other, and are hardly deformed even when a mechanical force is applied to the plates, and the thickness of the plates is reduced. Can be made thinner. [0018] By joining with the brazing material, two independent passages are formed by the brazing material and the corrugated shape of the plate, and the absorbing liquid having a temperature difference flows in each of the passages. The heat exchange efficiency can be improved as compared with a heat exchanger in which corrugated plates are simply overlapped.
【図面の簡単な説明】
【図１】本発明の吸収式冷温機のプレート式熱交換器の
断面図である。
【図２】図２に示したプレートの正面図である。
【図３】従来のプレート式熱交換器の断面図である。
【符号の説明】
１ プレート
６ 山
７ 谷
８ ろう材BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a plate heat exchanger of an absorption chiller according to the present invention. FIG. 2 is a front view of the plate shown in FIG. 2; FIG. 3 is a sectional view of a conventional plate heat exchanger. [Explanation of Signs] 1 Plate 6 Mountain 7 Valley 8 Brazing material
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F25B 15/00 301 F28F 3/08 301──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) F25B 15/00 301 F28F 3/08 301
Claims (1)
高い吸収液と温度の低い吸収液とをこれらプレート間に
交互に流し込んで両液の熱交換を行わせる吸収式冷温水
機のプレート式熱交換器において、前記プレートを銅系
の材料で作製し、これら重ね合わせたプレートのうち一
方のプレートの山とこの山と対向する他方のプレートの
谷とを銅系あるいはニッケル系のろう材で接合して、こ
のろう材と前記プレートの波形形状とで前記両液が流れ
る通路を夫々形成したことを特徴とする吸収式冷温水機
のプレート式熱交換器。 (57) [Claims] Laminate multiple plates with corrugated sections
High and low temperature absorbing solution between these plates
Absorption-type cold / hot water that alternately flows to exchange heat between the two liquids
In the plate heat exchanger of the machine, the plate is made of copper
Of one of these stacked plates
Of one plate and the other plate
Join the valley with a copper or nickel brazing material
The two liquids flow through the brazing material and the corrugated shape of the plate.
Chiller-heater characterized by having formed passages each
Plate heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8139193A JP2760777B2 (en) | 1996-05-31 | 1996-05-31 | Plate heat exchanger for absorption chiller / heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8139193A JP2760777B2 (en) | 1996-05-31 | 1996-05-31 | Plate heat exchanger for absorption chiller / heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09210495A JPH09210495A (en) | 1997-08-12 |
| JP2760777B2 true JP2760777B2 (en) | 1998-06-04 |
Family
ID=15239728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8139193A Expired - Fee Related JP2760777B2 (en) | 1996-05-31 | 1996-05-31 | Plate heat exchanger for absorption chiller / heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2760777B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3168561A1 (en) * | 2015-11-11 | 2017-05-17 | Air To Air Sweden AB | A device for exchange of heat and/or mass transfer between fluid flows |
| CN107036480B (en) * | 2016-02-04 | 2020-07-10 | 丹佛斯微通道换热器（嘉兴）有限公司 | Heat exchange plate and plate heat exchanger using same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS599188Y2 (en) * | 1978-07-20 | 1984-03-22 | 川崎重工業株式会社 | Multilayer plate heat exchanger |
| JPS59195389U (en) * | 1983-06-07 | 1984-12-25 | 東洋ラジエーター株式会社 | heat exchanger heat sink |
-
1996
- 1996-05-31 JP JP8139193A patent/JP2760777B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09210495A (en) | 1997-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |