JP2007183071A - High-pressure-resistant compact heat exchanger and manufacturing method of the same - Google Patents

High-pressure-resistant compact heat exchanger and manufacturing method of the same Download PDF

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JP2007183071A
JP2007183071A JP2006002606A JP2006002606A JP2007183071A JP 2007183071 A JP2007183071 A JP 2007183071A JP 2006002606 A JP2006002606 A JP 2006002606A JP 2006002606 A JP2006002606 A JP 2006002606A JP 2007183071 A JP2007183071 A JP 2007183071A
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heat exchanger
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pressure
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metal plate
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Kotaro Matsu
康太郎 松
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Tokyo Bureizu KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a new high-pressure-resistant compact heat exchanger that basically comprises an existing plate type heat exchanger structure adapted for high pressure resistance and for overall downsizing. <P>SOLUTION: In the high-pressure-resistant compact heat exchanger, many rectangular metal plates 1 and corrugated metal fins 2 having substantially the same outline as the rectangular metal plates 1 are alternately assembled and brazed into a stack of desirable stages to form a heat exchanger body, a 30 MPa or higher pressure and high temperature fluid A of a high pressure natural refrigerant and a heated fluid B of gas or liquid subject to heat exchange are passed, respectively, through passages 3 formed between the corrugated fins 2 and the plates 1 and other passages 4 formed opposite the passages 3, both passages 3 and 4 are connected separately to form corresponding fluid inlets and outlets on the outside of the heat exchanger body X, and the metal plates 1 and corrugated metal fins 2 are made of a metal or alloy of a withstanding pressure of 200 MPa or higher in a thickness of 0.3 mm or greater and are brazed with a metal of or mainly of Cu with a contact width of 2 mm or greater. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、各種熱交換器、特に自然冷媒、例えばＣＯ２などを用いたヒートポンプ等に有効な小型の高耐圧コンパクト熱交換器およびその製造法に関する。 The present invention relates to a small high-pressure compact heat exchanger effective for various heat exchangers, in particular, a heat pump using a natural refrigerant such as CO 2 and a method for manufacturing the same.

この種の熱交換器は、エネルギー効率が極めて高いこともあって、ヒートポンプ方式が用いられ、しかも自然環境を破壊するフロンなどの冷媒に代えて自然冷媒のＣＯ２を採用し、これによりオゾン破壊係数はゼロとなり、さらに地球温暖化係数も「１」という環境に優しい熱交換器の開発が盛んになってきている（例えば、特許文献１参照。）。 This type of heat exchanger uses a heat pump system due to its extremely high energy efficiency, and adopts natural refrigerant CO 2 instead of refrigerant such as chlorofluorocarbon, which destroys the natural environment. Development of environmentally friendly heat exchangers with a coefficient of zero and a global warming coefficient of “1” has become active (see, for example, Patent Document 1).

他方、コンパクトで比較的扁平で小型のプレート型熱交換器も知られている（例えば、特許文献２，特許文献３参照。）。
特開２００４−２８３５６号公報 特開２００２−３５９２９号公報 特許第３６０５０８９号公報 On the other hand, compact, relatively flat and small plate heat exchangers are also known (see, for example, Patent Document 2 and Patent Document 3).
JP 2004-28356 A JP 2002-35929 A Japanese Patent No. 36005089

ところで、特許文献１のような自然冷媒のＣＯ２を用いると、使用圧力が高くなり、そのため熱交換器も大型化ならざるを得ず、小型コンパクト化ができないという問題があった。 By the way, when the natural refrigerant CO 2 as in Patent Document 1 is used, the working pressure increases, so that the heat exchanger must be increased in size, and there is a problem that it cannot be reduced in size and size.

すなわち、自然冷媒のＣＯ２は５０Ｍｐａ以上の高圧ガスとして働くので、熱交換器を構成する金属材料の肉厚は、耐圧性を保持させるため、大きくならざるを得ず、その上、熱交換構造も大型化を避けることができないという問題があった。 That is, since the natural refrigerant CO 2 acts as a high-pressure gas of 50 Mpa or more, the thickness of the metal material constituting the heat exchanger must be increased in order to maintain pressure resistance, and in addition, the heat exchange structure However, there was a problem that enlargement cannot be avoided.

したがって、プレートとフィンとで積層構成される、特許文献２および特許文献３に示される薄型でコンパクトなプレートフィン型の従来構成の熱交換器には、耐圧性に欠け、材料の破壊，ろう付個処の剥離など変形，破損を生じて、全く使用不可能であった。   Therefore, the thin and compact plate fin type heat exchangers of the conventional configuration shown in Patent Document 2 and Patent Document 3, which are configured by laminating plates and fins, lack pressure resistance, breakage of materials, brazing Deformation and breakage such as peeling of the parts occurred, and it was impossible to use at all.

しかし乍ら、小型化するためには、特許文献２，特許文献３で示されるような、構造が扁平で熱交換率の有効で単純なプレート型構成のものを利用する必要があった。   However, in order to reduce the size, it is necessary to use a flat plate structure having a flat structure and an effective heat exchange rate as shown in Patent Documents 2 and 3.

本発明は、叙上の点に着目して成されたもので、基本的構成は、プレート型の従来の熱交換器の構成のものを高耐圧なものに形成し、かつ全体を小型に構成した新規な高耐圧コンパクト熱交換器を得ることを目的とする。   The present invention has been made paying attention to the above points, and the basic structure is that of a conventional plate type heat exchanger having a high withstand voltage, and the entire structure is made compact. An object of the present invention is to obtain a novel high pressure resistant compact heat exchanger.

本発明は、以下の構成を備えることにより、上記課題を解決したものである。   This invention solves the said subject by providing the following structures.

（１）多数の方形の金属製プレート、および前記方形の金属製プレートと略同一外形の金属製の凹凸状のフィンを交互に組合せてろう付により所望段数に積層して熱交換器本体を形成し、前記凹凸状のフィンとプレートとの間に形成される一方の通路には、高圧自然冷媒の３０Ｍｐａ以上の高圧高熱流体を、この通路と相対向する他方に形成される通路には、熱交換される気体，液体などの被加熱流体をそれぞれ流通させ、之等両方の通路を各別に連通させて前記熱交換器本体の外部にそれぞれの流体の導入口と排出口とを形成すると共に、前記金属製プレート及び前記金属製の凹凸状のフィンは、耐圧力２００Ｍｐａ以上の金属ないし合金で、厚さが０．３ｍｍ以上とし、かつろう付金属はＣｕないしＣｕ主体で接触幅が２ｍｍ以上であることを特徴とする高耐圧コンパクト熱交換器。   (1) A heat exchanger main body is formed by alternately combining a plurality of rectangular metal plates and metal concave and convex fins having substantially the same outer shape as the rectangular metal plates and laminating them in a desired number of stages by brazing. In one passage formed between the concavo-convex fins and the plate, a high-pressure high-temperature fluid of 30 Mpa or more of high-pressure natural refrigerant is supplied to the other passage opposite to this passage. Each of the fluids to be heated such as gas to be exchanged and liquid is circulated, and both of the passages are individually communicated to form an inlet and an outlet of each fluid outside the heat exchanger body, The metal plate and the metal concave-convex fin are a metal or alloy having a pressure resistance of 200 Mpa or more, a thickness of 0.3 mm or more, and a brazing metal is mainly Cu or Cu and has a contact width of 2 mm or more. is there High-voltage compact heat exchanger which is characterized and.

（２）高圧自然冷媒は、ＣＯ２であることを特徴とする前記（１）記載の高耐圧コンパクト熱交換器。 (2) The high-pressure compact heat exchanger according to (1), wherein the high-pressure natural refrigerant is CO 2 .

（３）熱交換器本体は、積層された各金属製プレートに設けた外周突壁と金属製プレートの下部周線とのろう付による接続固着で形成される外周壁と、積層された最上位および最下位の金属製プレートによる上下壁とで形成して成ることを特徴とする前記（１）記載の高耐圧コンパクト熱交換器。   (3) The heat exchanger body includes an outer peripheral wall formed by brazing between an outer peripheral protruding wall provided on each stacked metal plate and a lower peripheral line of the metal plate, and a stacked uppermost layer The high pressure-resistant compact heat exchanger according to (1), which is formed by upper and lower walls made of a lowermost metal plate.

（４）多数の方形の金属製プレートの両側で、凹凸状のフィンの外方には、自段および他段への流体の流通を可能とする切欠孔および流通孔を並設したガイドプレートを金属製プレートと一体に備え、かつ複数の金属製プレートの重合積層時、切欠孔および流通孔に対向する個処の、金属製プレートに流通孔を穿って成ることを特徴とする前記（１）または（３）記載の高耐圧コンパクト熱交換器。   (4) On both sides of a large number of rectangular metal plates, on the outside of the concave and convex fins, there are guide plates in which notched holes and flow holes that allow fluid flow to the own stage and other stages are arranged in parallel. (1) characterized in that the metal plate is provided integrally with the metal plate and has a through hole formed in the metal plate at a location facing the notch hole and the through hole when the plurality of metal plates are stacked. Or the high pressure | voltage resistant compact heat exchanger as described in (3).

（５）凹凸状のフィンは、オフセット型、ヘリボーン型、平板フィン型、波状フィン型、ルーバ型、穴あき型等の中の一つで形成して成ることを特徴とする前記（１）記載の高耐圧コンパクト熱交換器。   (5) The concave / convex fin is formed of one of an offset type, a helibone type, a flat plate fin type, a corrugated fin type, a louver type, a perforated type, etc. High pressure resistant compact heat exchanger.

（６）外周突壁を突設した各金属製プレートと、それぞれの金属製プレート内の凹凸状のフィンおよび切欠子，流通孔を穿ったガイドプレートを配設し、上下に積層して、熱交換器本体の組成体を形成し、かつ、之等の熱交換器本体の組成体の金属組成は、
イ．金属製プレートおよび凹凸状のフィン・・・ＳＵＳ２７ＣＰ
ロ．金属製プレートの厚さｔ１ ０．３ｍｍ
ハ．外周突壁の厚さｔ２ ０．３ｍｍ
ニ．フィンの厚さｔ３ ０．３ｍｍ
より成り、之等の各構成部材の接合部には、Ｃｕろうの強度２０Ｋｇ／ｍｍ２を用いて、真空加熱炉内に入れ、ろう付処理して得ることを特徴とする高耐圧コンパクト熱交換器の製造法。 (6) Each metal plate provided with a protruding outer peripheral wall, and concave and convex fins and notches in each metal plate, and a guide plate with a circulation hole are disposed and stacked one above the other. The composition of the exchanger body is formed, and the metal composition of the heat exchanger body composition such as
I. Metal plate and uneven fins ... SUS27CP
B. Metal plate thickness t 1 0.3 mm
C. Perimeter wall thickness t 2 0.3 mm
D. Fin thickness t 3 0.3 mm
The high-pressure compact heat exchange is characterized in that it is obtained by brazing in a vacuum heating furnace using a Cu brazing strength of 20 kg / mm 2 at the joint part of each component. The manufacturing method of the vessel.

本発明によれば、熱交換器本体を構成する金属ないし合金は、肉厚が０．３ｍｍ以上で、耐圧ないしは耐蝕性に優れた強度２００Ｍｐａ以上のものを用い、かつ、ろう付金属はＣｕないしＣｕ主体のものを用い、さらに接触幅が２ｍｍ以上であるので、ＣＯ２のような自然冷媒の３０ＭＰａ以上の高圧高熱流体の流通を可能とする。 According to the present invention, the metal or alloy constituting the heat exchanger body has a thickness of 0.3 mm or more and has a strength of 200 Mpa or more excellent in pressure resistance or corrosion resistance, and the brazing metal is Cu or Since a Cu-based material is used and the contact width is 2 mm or more, a high-pressure high-temperature fluid of 30 MPa or more of a natural refrigerant such as CO 2 can be circulated.

しかも、熱交換器本体は、複数の金属プレートと、このプレートと接合される凹凸状フィンは、好みの形状のものを用いることができるので、使用用途に応じて選択して、好みの給湯システムに利用できる。   Moreover, since the heat exchanger body can use a plurality of metal plates and the concave and convex fins joined to the plates in a desired shape, the hot water supply system can be selected according to the intended use. Available to:

なお、熱交換後のＣＯ２のような自然冷媒は、膨張、空気熱交換、コンプレッサの冷媒サイクルによるヒートポンプユニットシステムによって反復熱源を得ることができる。特に、高耐圧効果を有するので、コンパクトな扁平小型の熱交換器を提供できる。 Note that a natural refrigerant such as CO 2 after heat exchange can obtain a repetitive heat source by expansion, air heat exchange, and a heat pump unit system based on a refrigerant cycle of a compressor. In particular, since it has a high pressure resistance effect, a compact flat and small heat exchanger can be provided.

以下に、本発明の一実施例を図面と共に説明する。   An embodiment of the present invention will be described below with reference to the drawings.

図面において、１は多数の方形の金属製プレート、２は前記金属製プレート１の外周突壁１ａ内に配設される金属製の凹凸状のフィン、３は前記プレート１と前記フィン２との間に形成される一方の通路で、この通路３は高圧高熱流体Ａが流通する。４は前記通路３と相対向する側のプレート１とフィン２との間に形成される他方の通路で、この通路４には熱交換される冷水、冷空気などの被加熱流体Ｂが流通する。５は金属製プレート１の両側に配置させたガイドプレートで、多段に積層される金属製プレート１の自段および他段への流体ＡまたはＢの交互の金属製プレート１，１への流通を可能とする切欠孔６と、流体ＡまたはＢを通過させる流通孔７を並設してある。８は最下位の金属製プレート、９は最上位の金属製プレートを示し、流体Ａ，Ｂのそれぞれの流入口部１０，１１、流出口部１２，１３を一体で備える。なお、１４は、前記切欠孔６および流通孔７と対応して連通する金属製プレート１に穿った孔、１５は各部材の接合部に形成されるろう付部を示す。   In the drawings, reference numeral 1 denotes a large number of rectangular metal plates, 2 denotes metal concave and convex fins disposed in the outer peripheral protruding wall 1a of the metal plate 1, and 3 denotes the plate 1 and the fin 2 One of the passages formed therebetween, in which the high-pressure and high-temperature fluid A flows. Reference numeral 4 denotes the other passage formed between the plate 1 and the fin 2 on the side opposite to the passage 3, and a fluid to be heated B such as cold water or cold air to be heat-exchanged flows through the passage 4. . 5 is a guide plate arranged on both sides of the metal plate 1, and distributes the fluid A or B to the metal plates 1, 1 alternately to the self-stage and other stages of the metal plate 1 stacked in multiple stages. A notch hole 6 and a flow hole 7 for allowing the fluid A or B to pass therethrough are provided side by side. Reference numeral 8 denotes the lowermost metal plate, and 9 denotes the uppermost metal plate. The inlets 10 and 11 and the outlets 12 and 13 of the fluids A and B are integrally provided. Reference numeral 14 denotes a hole formed in the metal plate 1 that communicates with the cutout hole 6 and the flow hole 7, and 15 denotes a brazed portion formed at a joint portion of each member.

これら上記構成により、熱交換器本体Ｘが構成される。   With the above configuration, the heat exchanger body X is configured.

そして、上述した構成の各部材は、後述する方法による金属素材とろう付処理により製造される。   And each member of the structure mentioned above is manufactured by the metal raw material and brazing process by the method mentioned later.

まず、上記構成に基づいて作用を説明する。   First, the operation will be described based on the above configuration.

なお、金属製プレート１の段数は、例えば図５の（ａ），（ｂ）に示すように、流体Ａは、最下位のプレート８を含めて４段、他の流体Ｂは５段である。   For example, as shown in FIGS. 5A and 5B, the number of stages of the metal plate 1 is four stages including the lowest plate 8, and the other fluid B is five stages. .

一方の流体Ａは、ＣＯ２などの自然冷媒を用いた高圧高熱流体であり、一方の流体Ａの通路３の多段の金属製プレート１の３ａ，３ｂ，３ｃ，３ｄを通り、また、他方の被加熱流体Ｂは、通路４の多段の金属製プレート１の４ａ，４ｂ，４ｃ，４ｄ，４ｅを通り、両流体Ａ，Ｂが、その間で熱交換される。そして、流体Ａ，Ｂは、いずれも最上位の金属製プレート９に設けた流入口部１０，１１を経て、前記通路３，４を通り、最下位の金属製プレート８およびそれより一段高い金属製プレートで反転して流通熱交換され、それぞれ流出口部１２，１３より外部に導出される。 One fluid A is a high-pressure and high-temperature fluid using a natural refrigerant such as CO 2 , and passes through 3 a, 3 b, 3 c, 3 d of the multistage metal plate 1 in the passage 3 of one fluid A, and the other The heated fluid B passes through 4a, 4b, 4c, 4d, and 4e of the multistage metal plate 1 in the passage 4, and the fluids A and B are heat-exchanged therebetween. The fluids A and B both pass through the inlets 10 and 11 provided in the uppermost metal plate 9, pass through the passages 3 and 4, and pass through the lowermost metal plate 8 and a metal one level higher than that. The heat is exchanged by inverting with the plate made and is led out to the outside from the outlet portions 12 and 13 respectively.

熱交換されて放熱した一方の流体Ａは、図示しないが、ヒートポンプ方式を備える循環回路の膨張弁→大気熱熱交換器→圧縮機を経て、再び高圧高熱流体となり、本発明に係る熱交換器本体Ｘの流入口部１０に導入され、反覆して同一作用を呈する。   One fluid A that has been heat-exchanged and dissipated is not shown in the figure, but becomes a high-pressure high-temperature fluid again through an expansion valve of a circulation circuit equipped with a heat pump system → atmospheric heat exchanger → compressor, and the heat exchanger according to the present invention It is introduced into the inflow port 10 of the main body X, and it reverses and exhibits the same action.

他方、熱交換されて高温となった他の流体Ｂは、温水，温風となって、室内の暖房，エアコンとして使用される。なお、閉回路構成を備えれば、放熱された他の流体Ｂとなり、再び熱交換器本体Ｘの流入口部１１より導入されて、同様に反覆して同一作用を呈する。   On the other hand, the other fluid B, which has been heated to a high temperature, becomes warm water and warm air, and is used as indoor heating and air conditioning. In addition, if it has a closed circuit structure, it will become another heat-dissipated fluid B, will be again introduce | transduced from the inflow port part 11 of the heat exchanger main body X, and will be reflected similarly and will exhibit the same effect | action.

ところで、自然冷媒として用いるＣＯ２を、流体Ａとして用いる時、
（温度）最高１１０℃（流入口１０）
（圧力）１４ＭＰａ
（流量）５ｌ／ｍｉｎ
流体Ｂの被加熱流体として上水を用いて、
（温度）最高９０℃（流入口１１）
（圧力）１．７ＭＰａ
（流量）５ｌ／ｍｉｎ
の条件を満たすために、特許文献３に示す従来構成の積層型オフセット型のチタン製プレート型の熱交換器を用いて流体ＡおよびＢを用いて試験を行った結果、オフセットフィン，プレートおよびろう付は、流体Ａの圧力が次第に上昇するにつれ、１４ＭＰａで変形が始まり、２５ＭＰａ以上での加圧は不可能となったことが判明した。即ち、オフセットフィンの変形，破損、プレートの変形、ろう付の剥離などが発見された。 By the way, when CO 2 used as a natural refrigerant is used as the fluid A,
(Temperature) Maximum 110 ° C (Inlet 10)
(Pressure) 14 MPa
(Flow rate) 5 l / min
Using clean water as the fluid to be heated of fluid B,
(Temperature) Maximum 90 ° C (Inlet 11)
(Pressure) 1.7 MPa
(Flow rate) 5 l / min
In order to satisfy the above condition, a test was conducted using fluids A and B using a laminated offset type titanium plate heat exchanger having a conventional configuration shown in Patent Document 3, and as a result, offset fins, plates and brazing It was found that as the pressure of fluid A gradually increased, deformation started at 14 MPa, and pressurization at 25 MPa or higher became impossible. In other words, deformation and breakage of offset fins, deformation of plates, peeling of brazing, etc. were discovered.

ここで、金属製プレート１およびオフセット型の凹凸フィン２の金属として、ステンレスのＳＵＳ３０４＝ＳＵＳ２７ＣＰ（冷間圧延ステンレス鋼板）   Here, as the metal of the metal plate 1 and the offset-type uneven fin 2, stainless steel SUS304 = SUS27CP (cold rolled stainless steel plate)

Figure 2007183071
を用い、かつ、
・プレート１の厚さｔ１ ：０．３ｍｍ以上
・外周突壁１ａの厚さｔ２ ：０．３ｍｍ以上
・フィン２の厚さｔ３ ：０．３ｍｍ以上
とすると共に、ろう付金属としては、Ｃｕろうの強度２０Ｋｇ／ｍｍ２（２０〜４０Ｋｇ／ｍｍ２）を用い、オフセットフィン２の一段のろう付強度を、
４．２ｍｍ×３．０ｍｍ×２０Ｋｇ／ｍｍ２×４００個処＝１００，８００Ｋｇ
とすることにより、格段と強度を上げた。
Figure 2007183071
 And
- the plate 1 the thickness t 1: 0.3mm or more, the outer peripheral projecting wall 1a of thickness t 2: thickness of 0.3mm or more fins 2 t 3: with a 0.3mm or more, the metal brazing Cu brazing strength 20 kg / mm 2 (20 to 40 kg / mm 2 )
4.2 mm x 3.0 mm x 20 kg / mm 2 x 400 pieces = 100,800 kg
As a result, the strength was significantly improved.

ろう付面積は、１プレート１当り片面４００個処で、全体から見て５０％とした。これにより、
・変形値 ４２ＭＰａ
・バースト値（破壊値） ６２ＭＰａ
という、驚異的な数値、すなわち扁平なプレートタイプの小型熱交換器の性能を向上できたのである。 The brazing area was 400 per side per plate, and 50% when viewed from the whole. This
・ Deformation value 42MPa
・ Burst value (destructive value) 62 MPa
This is an amazing number, that is, the performance of the flat plate type small heat exchanger.

なお、この扁平なプレートタイプの小型熱交換器としては、上記オフセット型フィン２に係らず、他の形状のフィンとしては図９に示すような（ａ）平板フィン２ａ、（ｂ）波状フィン２ｂ、（ｃ）ルーバフィン２ｃ、（ｄ）穴あきフィン２ｄなどにも適用でき、さらに本実施例に図示した以外の、上下多段に積層した図１０に示すような、金属プレート１Ａと凹凸状フィン２で構成されるプレートタイプのものにも同様に実施できる。   The flat plate type small heat exchanger is not limited to the offset type fin 2, and other shapes of fins are as shown in FIG. 9 (a) flat plate fins 2a and (b) corrugated fins 2b. (C) The louver fin 2c, (d) the perforated fin 2d, and the like, and the metal plate 1A and the uneven fin 2 as shown in FIG. The same can be applied to the plate type constituted by.

以上、本発明の実施例に示す、上記した金属製プレート１、オフセットフィン２およびろう付金属については、同一の機能を呈する金属、材料に適用できることは勿論である。   As described above, the metal plate 1, the offset fin 2 and the brazing metal described in the embodiments of the present invention can be applied to metals and materials having the same function.

以下に、本発明の製造法について、一実施例を説明する。   Hereinafter, one example of the production method of the present invention will be described.

上述した構成を備える各金属製プレート１と、それぞれの金属製プレート１内に凹凸状のフィン２および切欠孔６、流通孔７を穿ったガイドプレート５を配設し、上下段に積層し、図５（ａ），（ｂ）の熱交換器本体Ｘの原形を構成する。   Each metal plate 1 having the above-described configuration, and the guide plate 5 having the concave and convex fins 2, the cutout holes 6, and the flow holes 7 are disposed in the respective metal plates 1, and are stacked in the upper and lower stages, The original form of the heat exchanger main body X of Fig.5 (a), (b) is comprised.

なお、各構成部材の組成金属は、以下のとおりである。   In addition, the composition metal of each structural member is as follows.

１．金属製プレート１およびオフセット型の凹凸状のフィン２
・・・・・ＳＵＳ２７ＣＰ（冷間圧延ステンレス鋼板（表１に示す化学成分）
２．金属製プレート１の厚さｔ１：０．３ｍｍ以上
３．外周突壁１ａの厚さｔ２ ：０．３ｍｍ以上
４．フィン２の厚さｔ３ ：０．３ｍｍ以上
５．ガイドプレート５の厚さｔ４：外周突壁１ａの内側の高さより僅かに低い（１．５ｍｍ以上）
これらの各構成部材の接合部に塗布したろう付金属は、Ｃｕろうの強度２０Ｋｇ／ｍｍ２（２０〜４０Ｋｇ／ｍｍ２）を用いた。 1. Metal plate 1 and offset uneven fin 2
... SUS27CP (Cold rolled stainless steel sheet (chemical components shown in Table 1))
2. The thickness of the metal plate 1 t 1: 0.3mm more than three. 3. Thickness t 2 of outer peripheral protruding wall 1a: 0.3 mm or more 4. Thickness of fin 2 t 3 : 0.3 mm or more Thickness t 4 of the guide plate 5: slightly lower than the inner height of the outer peripheral projection wall 1a (1.5 mm or more)
Braze metal coated on the joint portion of each of these constituent members, using Cu brazing strength 20Kg / mm 2 (20~40Kg / mm 2).

斯くして積層された熱交換器本体の組立体を、真空加熱炉に入れて炉内の真空度を１０−４ｔｏｒｒ程度として徐々に加熱する。なお、真空度は必要以上に高くする必要はなく、１０−４ｔｏｒｒ以上でも良く、ＡｒやＨｅなどの不活性ガス雰囲気で使用しても良いし、両雰囲気を併用しても良い。炉内の温度が８４０℃〜１０００℃に至ったところで、この温度を約２５分〜３５分維持させてから降温し、製品とする。 The heat exchanger body assembly thus laminated is put into a vacuum heating furnace and gradually heated to a vacuum degree of about 10 −4 torr in the furnace. The degree of vacuum need not be higher than necessary, and may be 10 −4 torr or more, may be used in an inert gas atmosphere such as Ar or He, or both atmospheres may be used in combination. When the temperature in the furnace reaches 840 ° C. to 1000 ° C., this temperature is maintained for about 25 minutes to 35 minutes, and then the temperature is lowered to obtain a product.

本発明に係るプレート型熱交換器の構成を模式的に示した分解斜視図1 is an exploded perspective view schematically showing the configuration of a plate heat exchanger according to the present invention. 図１に示すプレート型熱交換器の分解斜視説明図Exploded perspective view of the plate heat exchanger shown in FIG. 図２のプレート型熱交換器を反対側から見た斜視図The perspective view which looked at the plate type heat exchanger of Drawing 2 from the opposite side （ａ）（ｂ）は、図３における第１ユニットプレートと第２ユニットプレートを示す説明図(A) (b) is explanatory drawing which shows the 1st unit plate and 2nd unit plate in FIG. （ａ）（ｂ）は、流体Ａと流体Ｂとの流通経路の一例を示すプレート型熱交換器の断面図(A) (b) is sectional drawing of the plate type heat exchanger which shows an example of the flow path of the fluid A and the fluid B 金属製プレートとオフセットフィンとプレートの外周突壁とのろう付状態と厚さの関係を示す拡大断面図Enlarged sectional view showing the relationship between the brazing state and thickness of the metal plate, offset fin, and outer peripheral protruding wall of the plate 図６のVII―VII線断面図Sectional view taken along line VII-VII in FIG. （ａ）はガイドプレートの平面図、（ｂ）は（ａ）のｂ−ｂ線断面図(A) is a plan view of the guide plate, (b) is a cross-sectional view taken along line bb of (a). （ａ）（ｂ）（ｃ）（ｄ）は、他の形状のフィンを示す斜視図(A) (b) (c) (d) is a perspective view showing fins of other shapes 他のプレート型熱交換器の要部を示す斜視図The perspective view which shows the principal part of another plate type heat exchanger

符号の説明Explanation of symbols

１ 金属製プレート
１ａ 外周突壁
２ 凹凸状フィン
３ 一方の通路
４ 他方の流路
５ ガイドプレート
６ 切欠孔
７ 流通孔
８ 最下位の金属製プレート
９ 最上位の金属製プレート
１０、１１ 流入口部
１２、１３ 流出口部 DESCRIPTION OF SYMBOLS 1 Metal plate 1a Perimeter protrusion wall 2 Uneven fin 3 One channel | path 4 The other channel 5 Guide plate 6 Notch hole 7 Flowing hole 8 Lowermost metal plate 9 Uppermost metal plate 10, 11 Inlet part 12, 13 Outlet

Claims (6)

多数の方形の金属製プレート、および前記方形の金属製プレートと略同一外形の金属製の凹凸状のフィンを交互に組合せてろう付により所望段数に積層して熱交換器本体を形成し、前記凹凸状のフィンとプレートとの間に形成される一方の通路には、高圧自然冷媒の３０Ｍｐａ以上の高圧高熱流体を、この通路と相対向する他方に形成される通路には、熱交換される気体，液体などの被加熱流体をそれぞれ流通させ、之等両方の通路を各別に連通させて前記熱交換器本体の外部にそれぞれの流体の導入口と排出口とを形成すると共に、前記金属製プレート及び前記金属製の凹凸状のフィンは、耐圧力２００Ｍｐａ以上の金属ないし合金で、厚さが０．３ｍｍ以上とし、かつろう付金属はＣｕないしＣｕ主体で接触幅が２ｍｍ以上であることを特徴とする高耐圧コンパクト熱交換器。   A plurality of rectangular metal plates, and metal concave and convex fins having substantially the same outer shape as the rectangular metal plates are alternately combined and laminated in a desired number of stages by brazing to form a heat exchanger body, One passage formed between the concave and convex fins and the plate exchanges a high-pressure high-temperature fluid of high-pressure natural refrigerant of 30 Mpa or more, and heat is exchanged in the passage formed on the other side opposite to this passage. Each of the fluids to be heated, such as gas and liquid, is circulated, and both the passages are communicated with each other to form an inlet and an outlet for each fluid outside the main body of the heat exchanger. The plate and the metal concave-convex fins are metals or alloys having a pressure resistance of 200 Mpa or more, the thickness is 0.3 mm or more, and the brazing metal is mainly Cu or Cu and the contact width is 2 mm or more. High-voltage compact heat exchanger to symptoms. 高圧自然冷媒は、ＣＯ２であることを特徴とする請求項１記載の高耐圧コンパクト熱交換器。 High-pressure natural refrigerant, the high-voltage compact heat exchanger of claim 1, wherein it is CO 2. 熱交換器本体は、積層された各金属製プレートに設けた外周突壁と金属製プレートの下部周線とのろう付による接続固着で形成される外周壁と、積層された最上位および最下位の金属製プレートによる上下壁とで形成して成ることを特徴とする請求項１記載の高耐圧コンパクト熱交換器。   The heat exchanger body consists of an outer peripheral wall formed by brazing the outer peripheral protruding wall provided on each stacked metal plate and the lower peripheral line of the metal plate, and the uppermost and lowermost stacked layers 2. The high pressure resistant compact heat exchanger according to claim 1, wherein the heat resistant compact heat exchanger is formed of upper and lower walls made of a metal plate. 多数の方形の金属製プレートの両側で、凹凸状のフィンの外方には、自段および他段への流体の流通を可能とする切欠孔および流通孔を並設したガイドプレートを金属製プレートと一体に備え、かつ複数の金属製プレートの重合積層時、切欠孔および流通孔に対向する個処の、金属製プレートに流通孔を穿って成ることを特徴とする請求項１または３記載の高耐圧コンパクト熱交換器。   On both sides of a large number of rectangular metal plates, on the outside of the uneven fins, a metal plate is provided with a guide plate in which notched holes and flow holes are arranged in parallel to allow fluid to flow to the own stage and other stages. The metal plate is provided with a through-hole in a portion facing the notch hole and the through-hole when the plurality of metal plates are laminated together. High pressure compact heat exchanger. 凹凸状のフィンは、オフセット型、ヘリボーン型、平板フィン型、波状フィン型、ルーバ型、穴あき型等の中の一つで形成して成ることを特徴とする請求項１記載の高耐圧コンパクト熱交換器。   2. The high withstand voltage compact according to claim 1, wherein the uneven fin is formed of one of an offset type, a helibone type, a flat plate fin type, a corrugated fin type, a louver type, a perforated type and the like. Heat exchanger. 外周突壁を突設した各金属製プレートと、それぞれの金属製プレート内の凹凸状のフィンおよび切欠子，流通孔を穿ったガイドプレートを配設し、上下に積層して、熱交換器本体の組成体を形成し、かつ、之等の熱交換器本体の組成体の金属組成は、
イ．金属製プレートおよび凹凸状のフィン……ＳＵＳ２７ＣＰ
ロ．金属製プレートの厚さｔ１ ０．３ｍｍ
ハ．外周突壁の厚さｔ２ ０．３ｍｍ
ニ．フィンの厚さｔ３ ０．３ｍｍ
より成り、之等の各構成部材の接合部には、Ｃｕろうの強度２０Ｋｇ／ｍｍ２を用いて、真空加熱炉内に入れ、ろう付処理して得ることを特徴とする高耐圧コンパクト熱交換器の製造法。 Each metal plate with a protruding outer peripheral wall, uneven fins and notches in each metal plate, and a guide plate with through holes are arranged and stacked one above the other, and the heat exchanger body And the metal composition of the heat exchanger body composition such as
I. Metal plate and uneven fins ...... SUS27CP
B. Metal plate thickness t 1 0.3 mm
C. Perimeter wall thickness t 2 0.3 mm
D. Fin thickness t 3 0.3 mm
The high-pressure compact heat exchange is characterized in that it is obtained by brazing in a vacuum heating furnace using a Cu brazing strength of 20 kg / mm 2 at the joint part of each component. The manufacturing method of the vessel.
JP2006002606A 2006-01-10 2006-01-10 High-pressure-resistant compact heat exchanger and manufacturing method of the same Pending JP2007183071A (en)

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