JPH10288493A - Heat exchanger for heating - Google Patents
Heat exchanger for heatingInfo
- Publication number
- JPH10288493A JPH10288493A JP9241797A JP9241797A JPH10288493A JP H10288493 A JPH10288493 A JP H10288493A JP 9241797 A JP9241797 A JP 9241797A JP 9241797 A JP9241797 A JP 9241797A JP H10288493 A JPH10288493 A JP H10288493A
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- electric heating
- heat exchanger
- heat exchange
- holding plates
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
- F24H3/0429—For vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
- F24H3/0429—For vehicles
- F24H3/0435—Structures comprising heat spreading elements in the form of fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
- F24H9/1872—PTC
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)
- Air-Conditioning For Vehicles (AREA)
- Surface Heating Bodies (AREA)
- Resistance Heating (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は電気発熱体を一体化
した暖房用熱交換器に関するもので、車両エンジン(内
燃機関)にて加熱された温水(エンジン冷却水)を熱源
として空気を加熱する車両暖房用熱交換器に用いて好適
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating heat exchanger in which an electric heating element is integrated, and heats air using hot water (engine cooling water) heated by a vehicle engine (internal combustion engine) as a heat source. It is suitable for use in a vehicle heat exchanger.
【0002】[0002]
【従来の技術】従来、この種の電気発熱体を一体化した
熱交換器は、特開平5−69732号公報において提案
されている。この従来装置によれば、温水(エンジン冷
却水)を熱源として空気を加熱する暖房用熱交換器に電
気発熱体を一体化することにより、エンジン始動直後の
ように温水温度が低いときには、電気発熱体への通電に
より、電気発熱体の発生熱を空気中に放熱して空気を加
熱することができる。2. Description of the Related Art Conventionally, a heat exchanger in which an electric heating element of this kind is integrated has been proposed in Japanese Patent Application Laid-Open No. 5-69732. According to this conventional device, the electric heating element is integrated with a heating heat exchanger that heats air using hot water (engine cooling water) as a heat source. By energizing the body, the heat generated by the electric heating element can be radiated into the air to heat the air.
【0003】[0003]
【発明が解決しようとする課題】ところで、上記公報記
載の従来装置では、発熱体素子と電極板から構成される
電気発熱体を暖房用熱交換器のコア部と一体ろう付けし
ているので、高温のろう付け温度(アルミニュウムのろ
う付けの場合、600°C程度)の雰囲気に発熱体が晒
されるので、発熱体の電気的特性か著しく損なわれると
いう不具合がある。By the way, in the conventional apparatus described in the above publication, the electric heating element composed of the heating element and the electrode plate is brazed integrally with the core of the heating heat exchanger. Since the heating element is exposed to an atmosphere having a high brazing temperature (about 600 ° C. in the case of aluminum brazing), there is a problem that the electrical characteristics of the heating element are significantly impaired.
【0004】本発明は上記点に鑑みてなされたもので、
電気発熱体の電気的特性を損なう恐れがなく、しかも、
電気発熱体を暖房用熱交換器のコア部に容易に組付可能
とすることを目的とする。[0004] The present invention has been made in view of the above points,
There is no risk of damaging the electrical characteristics of the electric heating element, and
An object of the present invention is to make it possible to easily attach an electric heating element to a core of a heating heat exchanger.
【0005】[0005]
【課題を解決するための手段】上記目的を達成するた
め、請求項1記載の発明では、熱源流体が流通する偏平
チューブ(6)と、この偏平チューブ(6)の間に接合
されたコルゲートフィン(7)とからなる熱交換用コア
部(3)の一部の部位に電気発熱体(9)を設置する暖
房用熱交換器において、熱交換用コア部(3)のうち、
電気発熱体(9)が設置される部位では、隣接するコル
ゲートフィン(7)の折り曲げ頂部に、それぞれ偏平チ
ューブ(6)の長手方向に延びる保持板(10、11)
を所定間隔を開けて接合し、この2枚の保持板(10、
11)の間に電気発熱体(9)を電気絶縁して組み付け
たことを特徴としている。According to the first aspect of the present invention, there is provided a flat tube (6) through which a heat source fluid flows, and a corrugated fin joined between the flat tubes (6). (7) In the heating heat exchanger in which the electric heating element (9) is installed at a part of the heat exchange core part (3), the heat exchange core part (3) includes:
At the site where the electric heating element (9) is installed, holding plates (10, 11) extending in the longitudinal direction of the flat tube (6) are respectively provided on the bent tops of the adjacent corrugated fins (7).
Are bonded at predetermined intervals, and the two holding plates (10,
It is characterized in that the electric heating element (9) is electrically insulated and assembled during 11).
【0006】これによると、コルゲートフィン(7)に
予め保持板(10、11)を接合しておき、熱交換用コ
ア部(3)の一体ろう付け終了後に2枚の保持板(1
0、11)の間に電気発熱体(9)を組み付けることが
できるので、熱交換用コア部(3)のろう付けによって
電気発熱体の電気的特性を損なう恐れが全くない。しか
も、コルゲートフィン(7)が波形状を有する複雑な形
状であっても、予め2枚の保持板(10、11)がコル
ゲートフィン(7)に接合してあるから、コルゲートフ
ィン(7)の波形状をつぶすことなく、この2枚の保持
板(10、11)の平板形状に沿って電気発熱体(9)
の組付を容易に行うことができる。従って、電気発熱体
(9)の組付容易化と、コルゲートフィン(7)の形状
維持(伝熱性能の確保)とを良好に両立できる。According to this, the holding plates (10, 11) are previously joined to the corrugated fin (7), and after the brazing of the heat exchange core (3) is completed, the two holding plates (1) are joined.
Since the electric heating element (9) can be assembled between 0 and 11), there is no possibility that the electrical characteristics of the electric heating element are impaired by brazing the heat exchange core (3). In addition, even if the corrugated fin (7) has a complicated shape having a corrugated shape, the two holding plates (10, 11) are joined to the corrugated fin (7) in advance, so that the corrugated fin (7) is The electric heating element (9) follows the flat shape of the two holding plates (10, 11) without crushing the wave shape.
Can be easily assembled. Therefore, both ease of assembling the electric heating element (9) and maintaining the shape of the corrugated fin (7) (securing heat transfer performance) can be favorably achieved.
【0007】さらに、2枚の保持板(10、11)の間
に電気発熱体(9)を電気絶縁して組み付けているか
ら、電気発熱体(9)への通電時に熱交換用コア部
(3)の金属部材(チューブ等)に電流を流すことな
く、電気発熱体(9)に直接通電できる。その結果、熱
交換用コア部(3)の金属部材が電食により腐食するの
を防止でき、熱交換器の耐食性を確保できる。Further, since the electric heating element (9) is electrically insulated and assembled between the two holding plates (10, 11), a heat exchange core ( The electric heating element (9) can be directly energized without causing an electric current to flow through the metal member (tube or the like) of 3). As a result, the metal member of the heat exchange core (3) can be prevented from being corroded by electrolytic corrosion, and the corrosion resistance of the heat exchanger can be secured.
【0008】また、請求項2記載の発明では、偏平チュ
ーブ(6)、コルゲートフィン(7)および保持板(1
0、11)をアルミニュウムで形成して、一体ろう付け
していることを特徴としている。従って、保持板(1
0、11)の接合を熱交換用コア部(3)の一体ろう付
けと同時に簡単に行うことができる。しかも、コルゲー
トフィン(7)の折り曲げ高さに多少の不揃いがあって
も、コルゲートフィン(7)と保持板(10、11)と
を予めろう付けしているので、ろう付け時に溶融ろう材
が毛細管現象によりコルゲートフィン(7)の折り曲げ
頂部と保持板(10、11)との隙間に浸透して隙間を
埋めることができる。従って、コルゲートフィン(7)
の各折り曲げ頂部を保持板(10、11)に確実に接合
できるので、電気発熱体(9)の発生熱を保持板(1
0、11)からコルゲートフィン(7)に効率よく伝導
できる。According to the second aspect of the present invention, the flat tube (6), the corrugated fin (7) and the holding plate (1) are provided.
0, 11) is formed of aluminum and brazed integrally. Therefore, the holding plate (1)
0, 11) can be easily performed simultaneously with the integral brazing of the heat exchange core (3). In addition, even if the bent height of the corrugated fins (7) is slightly irregular, since the corrugated fins (7) and the holding plates (10, 11) are pre-brazed, the molten brazing material is not brazed at the time of brazing. The gap can be filled by penetrating into the gap between the bent top of the corrugated fin (7) and the holding plate (10, 11) by the capillary action. Therefore, corrugated fins (7)
Can be securely joined to the holding plates (10, 11), so that the heat generated by the electric heating element (9) can be reduced by the holding plates (1).
0, 11) can be efficiently transmitted to the corrugated fin (7).
【0009】また、請求項3記載の発明では、電気発熱
体(9)に、正極側電極板(9b)および負極側電極板
(9c)と、この両電極板(9b、9c)の間に配置さ
れた発熱体素子(9a)とを備えるとともに、この両電
極板(9b、9c)の周囲を電気絶縁材料からなる被覆
部材(9d)により被覆し、この被覆部材(9d)の表
面が保持板(10、11)に圧接するようにして、電気
発熱体(9)を2枚の保持板(10、11)の間に組み
付けたことを特徴としている。According to the third aspect of the present invention, the electric heating element (9) has the positive electrode plate (9b) and the negative electrode plate (9c) interposed between the two electrode plates (9b, 9c). A heating element (9a) is provided, and the periphery of the two electrode plates (9b, 9c) is covered with a covering member (9d) made of an electrically insulating material, and the surface of the covering member (9d) is held. The electric heating element (9) is assembled between the two holding plates (10, 11) so as to be pressed against the plates (10, 11).
【0010】従って、電気発熱体(9)と2枚の保持板
(10、11)との間を被覆部材(9d)により確実に
電気絶縁することができるとともに、被覆部材(9d)
により両電極板(9b、9c)および発熱体素子(9
a)の保護を行うことができる。また、請求項4記載の
発明では、正極側電極板(9b)および負極側電極板
(9c)に、それぞれ外部回路との電気接続用の端子部
(9e、9f)を一体成形することを特徴としている。Accordingly, the electric insulation between the electric heating element (9) and the two holding plates (10, 11) can be surely insulated by the covering member (9d) and the covering member (9d).
The two electrode plates (9b, 9c) and the heating element (9
The protection of a) can be performed. According to a fourth aspect of the present invention, terminal portions (9e, 9f) for electrical connection with an external circuit are integrally formed on the positive electrode plate (9b) and the negative electrode plate (9c). And
【0011】従って、両電極板(9b、9c)に一体成
形した端子部(9e、9f)により外部回路との電気接
続を簡単に行うことができる。また、請求項5記載の発
明では、端子部(9e、9f)を、正極側電極板(9
b)および負極側電極板(9c)から熱交換用コア部
(3)の厚さ方向に突出させることを特徴としている。Therefore, the electrical connection with the external circuit can be easily made by the terminal portions (9e, 9f) integrally formed on the two electrode plates (9b, 9c). In the invention according to claim 5, the terminal portions (9e, 9f) are connected to the positive electrode plate (9
b) and project from the negative electrode plate (9c) in the thickness direction of the heat exchange core (3).
【0012】これによれば、端子部(9e、9f)に対
する外部回路の接続作業を熱交換用コア部(3)に妨げ
られることなく、容易に行うことができる。また、請求
項6記載の発明では、熱交換用コア部(3)に、電気発
熱体(9)を2枚の保持板(10、11)の間で圧接保
持するように締付け力を作用させる締結部材(12、1
3)を備えていることを特徴としている。According to this, the work of connecting the external circuit to the terminals (9e, 9f) can be easily performed without being hindered by the heat exchange core (3). In the invention according to claim 6, a tightening force is applied to the heat exchange core portion (3) so as to press and hold the electric heating element (9) between the two holding plates (10, 11). Fastening members (12, 1
3) is provided.
【0013】従って、締結部材(12、13)により電
気発熱体(9)の保持固定を確実に行うことができる。
また、請求項7記載の発明は、暖房用熱交換器の製造方
法に係るものであって、熱交換用コア部(3)の偏平チ
ューブ(6)とコルゲートフィン(7)を交互に積層す
るとともに、熱交換用コア部(3)のうち、電気発熱体
(9)が設置される部位では、隣接するコルゲートフィ
ン(7)の折り曲げ頂部の間に、偏平チューブ(6)の
長手方向に延びる2枚の保持板(10、11)を所定間
隔を開けて配置するコア組付工程と、熱交換用コア部
(3)の偏平チューブ(6)およびコルゲートフィン
(7)と保持板(10、11)とを一体ろう付けするろ
う付け工程と、2枚の保持板(10、11)の間に電気
発熱体(9)を組み付ける発熱体組付工程とを有するこ
とを特徴としている。Accordingly, the electric heating element (9) can be securely held and fixed by the fastening members (12, 13).
The invention according to claim 7 relates to a method of manufacturing a heat exchanger for heating, in which flat tubes (6) and corrugated fins (7) of a heat exchange core (3) are alternately laminated. At the same time, in the portion of the heat exchange core portion (3) where the electric heating element (9) is installed, it extends in the longitudinal direction of the flat tube (6) between the bent tops of the adjacent corrugated fins (7). A core assembling step of arranging the two holding plates (10, 11) at predetermined intervals, and a flat tube (6) and a corrugated fin (7) of the heat exchange core (3) and the holding plate (10, 11); 11) and a heating element assembling step of assembling an electric heating element (9) between two holding plates (10, 11).
【0014】これによれば、電気発熱体の電気的特性を
損なうことなく、電気発熱体(9)の組付を容易に行う
ことができる。なお、上記各手段の括弧内の符号は、後
述する実施形態記載の具体的手段との対応関係を示すも
のである。According to this, the electric heating element (9) can be easily assembled without deteriorating the electrical characteristics of the electric heating element. In addition, the code | symbol in the parenthesis of each said means shows the correspondence with the concrete means of embodiment mentioned later.
【0015】[0015]
【発明の実施の形態】以下、本発明の実施形態を図に基
づいて説明する。図1は本発明を適用した車両暖房用熱
交換器の一実施形態を示すもので、図2は図1の要部を
拡大して図示する破断斜視図であり、図1、2におい
て、この熱交換器は、温水入口側タンク1と、温水出口
側タンク2と、この両タンク1、2の間に設けられた熱
交換用コア部3とを有している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a heat exchanger for vehicle heating to which the present invention is applied, and FIG. 2 is a cutaway perspective view showing an enlarged main part of FIG. The heat exchanger has a hot water inlet side tank 1, a hot water outlet side tank 2, and a heat exchange core 3 provided between the two tanks 1, 2.
【0016】温水入口側タンク1には図示しない車両エ
ンジンからの温水(エンジン冷却水)が流入する入口パ
イプ4が設けられ、温水出口側タンク2には温水を外部
へ流出させ、エンジン側に還流させる出口パイプ5が設
けられている。なお、本例の熱交換器は図1に示すよう
に左右対称形であるので、温水入口側タンク1と温水出
口側タンク2とを左右逆転してもよい。The hot water inlet side tank 1 is provided with an inlet pipe 4 through which hot water (engine cooling water) from a vehicle engine (not shown) flows in, and the hot water outlet side tank 2 allows hot water to flow outside and return to the engine side. An outlet pipe 5 is provided. Since the heat exchanger of this example is symmetrical as shown in FIG. 1, the hot water inlet side tank 1 and the hot water outlet side tank 2 may be reversed left and right.
【0017】各タンク1、2はそれぞれタンク本体部1
a、2aと、このタンク本体部1a、2aの開口端面を
閉じるシートメタル1b、2bとからなり、図1、2の
上下方向が長手方向となる周知のタンク構造である。そ
して、シートメタル1b、2bには偏平状のチューブ挿
入穴(図示せず)が多数個、図1、2の上下方向に1列
または複数列並んで形成されている。Each of the tanks 1 and 2 has a tank body 1
a and 2a, and a sheet metal 1b and 2b for closing the opening end faces of the tank main bodies 1a and 2a, and has a well-known tank structure in which the vertical direction in FIGS. A large number of flat tube insertion holes (not shown) are formed in the sheet metals 1b and 2b, and one or more rows are formed in the vertical direction in FIGS.
【0018】熱交換用コア部3は暖房用空気の流れ方向
(図1の矢印A方向)に対して平行な偏平状に形成され
た偏平チューブ6を多数個図1、2の上下方向に並列配
置している。そして、この多数個の偏平チューブ6相互
の間に波形状に成形されたコルゲートフィン(フィン部
材)7を配置し接合している。このコルゲートフィン7
には周知のごとく暖房用空気の流れ方向に対して所定角
度で斜めに多数のルーバ(図示せず)が切り起こし成形
されており、このルーバの成形によりフィン熱伝達率を
向上させている。The heat exchanging core 3 is composed of a number of flat tubes 6 formed in a flat shape parallel to the flow direction of the air for heating (the direction of arrow A in FIG. 1). Have been placed. Corrugated fins (fin members) 7 formed in a wave shape are arranged and joined between the plurality of flat tubes 6. This corrugated fin 7
As is well known, a large number of louvers (not shown) are cut and raised at a predetermined angle with respect to the flow direction of the heating air, and the louvers are formed to improve the fin heat transfer coefficient.
【0019】偏平チューブ6の両端開口部はシートメタ
ル1b、2bのチューブ挿入穴内にそれぞれ挿通され、
接合される。また、コア部3の最外側(図1の上下両端
部)のコルゲートフィン7のさらに外側にはサイドプレ
ート8a、8bが配設され、このサイドプレート8a、
8bは最外側のコルゲートフィン7およびシートメタル
1b、2bに接合される。Openings at both ends of the flat tube 6 are inserted into tube insertion holes of the sheet metals 1b and 2b, respectively.
Joined. Further, side plates 8a and 8b are provided further outside the corrugated fins 7 on the outermost sides (upper and lower ends in FIG. 1) of the core portion 3, and these side plates 8a and 8b are disposed.
8b is joined to the outermost corrugated fin 7 and sheet metal 1b, 2b.
【0020】さらに、熱交換用コア部3の一部の部位
に、偏平チューブ6の代わりに、電気発熱体9を設置し
ている。図1の例では、熱交換用コア部3の4箇所に電
気発熱体9を等間隔で設置している。そして、熱交換用
コア部3のうち、電気発熱体9が設置される部位では、
隣接するコルゲートフィン7の折り曲げ頂部に、それぞ
れ偏平チューブ6の長手方向に延びる平板状の金属製保
持板10、11(図2参照)を所定間隔(L=電気発熱
体9の厚み)を開けて配置し接合し、この2枚の保持板
10、11の間に電気発熱体9を組み付ける構造となっ
ている。Further, instead of the flat tube 6, an electric heating element 9 is provided at a part of the heat exchange core 3. In the example of FIG. 1, electric heating elements 9 are installed at four positions of the heat exchange core 3 at equal intervals. Then, in the portion of the heat exchange core 3 where the electric heating element 9 is installed,
Flat metal holding plates 10 and 11 (see FIG. 2) extending in the longitudinal direction of the flat tube 6 are provided at predetermined intervals (L = thickness of the electric heating element 9) at the bent tops of the adjacent corrugated fins 7. They are arranged and joined, and the electric heating element 9 is assembled between the two holding plates 10 and 11.
【0021】ところで、本例における熱交換器では、上
記各構成部品1〜8bのすべてがアルミニュウム(アル
ミニュウム合金も含む)にて成形されており、また、平
板状の保持板10、11も同様にアルミニュウムにて成
形されている。平板状の保持板10、11は板厚0.1
〜0.5mm程度の金属薄板であり、また、平板状の保
持板10、11の幅(暖房空気の流れ方向の幅)はコル
ゲートフィン7の幅と略同一であり、また、保持板1
0、11の長手方向の寸法(図1の左右方向の寸法)は
シートメタル1b、2b間の寸法と略同一である。By the way, in the heat exchanger of this embodiment, all of the above components 1 to 8b are formed of aluminum (including an aluminum alloy), and the flat holding plates 10 and 11 are similarly formed. It is formed of aluminum. The flat holding plates 10 and 11 have a thickness of 0.1
The width of the flat holding plates 10 and 11 (width in the heating air flow direction) is substantially the same as the width of the corrugated fins 7.
The lengths 0 and 11 in the longitudinal direction (left and right dimensions in FIG. 1) are substantially the same as the dimensions between the sheet metals 1b and 2b.
【0022】電気発熱体9は図3に示す構造になってお
り、板状の発熱体素子9aと、この発熱体素子9aの表
裏両面に配置され細長の平板状の電極板9b、9cとか
らなる3層のサンドウイッチ構造になっている。そし
て、この電極板9b、9cの周囲を全周にわたって電気
的絶縁材料からなる被覆部材9dにより被覆している。
ここで、発熱体素子9aは所定の設定温度(例えば、9
0°C付近)T0 にて抵抗値が急増する正の抵抗温度特
性を有する抵抗体材料(例えば、チタン酸バリウム)か
らなるPTCヒータ素子であり、その板厚は1.0〜
2.0mm程度である。The electric heating element 9 has a structure shown in FIG. 3 and includes a plate-shaped heating element 9a and elongated flat plate-shaped electrode plates 9b and 9c arranged on both front and back surfaces of the heating element 9a. It has a three-layer sandwich structure. The entire periphery of the electrode plates 9b and 9c is covered with a covering member 9d made of an electrically insulating material.
Here, the heating element 9a is set at a predetermined set temperature (for example, 9
(Around 0 ° C.) A PTC heater element made of a resistor material (eg, barium titanate) having a positive resistance temperature characteristic whose resistance value rapidly increases at T 0 , and has a plate thickness of 1.0 to
It is about 2.0 mm.
【0023】発熱体素子9aの両電極板9b、9cはア
ルミニュウム、銅、ステンレス等の導電金属材から成形
されており、その板厚は0.1〜0.5mm程度であ
る。この両電極板9b、9cの長手方向の寸法(図1の
左右方向の寸法)は保持板10、11と略同一である。
そして、この両電極板9b、9cの長手方向において発
熱体素子9aは複数箇所(図3の例では4箇所)配置さ
れている。発熱体素子9aと両電極板9b、9cは互い
に圧接することにより、両者間の電気的導通を得る。The two electrode plates 9b and 9c of the heating element 9a are formed of a conductive metal material such as aluminum, copper, and stainless steel, and have a thickness of about 0.1 to 0.5 mm. The lengths of these two electrode plates 9b and 9c in the longitudinal direction (the sizes in the left and right directions in FIG. 1) are substantially the same as those of the holding plates 10 and 11.
A plurality of heating elements 9a (four in the example of FIG. 3) are arranged in the longitudinal direction of both electrode plates 9b and 9c. The heat generating element 9a and the two electrode plates 9b and 9c are brought into pressure contact with each other to obtain electrical continuity between them.
【0024】被覆部材9dが保持板10、11に圧接す
るようにして、電気発熱体9は2枚の保持板10、11
の間に組み付けられる。ここで、被覆部材9dは保持板
10、11と両電極板9b、9cとの間の電気的な絶縁
作用を果たすものであるが、発熱体素子9aの熱を保持
板10、11に伝導する役割を果たすため、保持板1
0、11と両電極板9b、9cとの間の被覆部材9dの
厚さt1 は25μ〜100μ程度の薄膜状にして、良好
な熱伝導作用を確保している。The electric heating element 9 is configured such that the covering member 9 d is pressed against the holding plates 10 and 11, so that the electric heating element 9 has two holding plates 10 and 11.
Assembled between. Here, the covering member 9d performs an electrical insulating action between the holding plates 10, 11 and the two electrode plates 9b, 9c, and conducts heat of the heating element 9a to the holding plates 10, 11. To play a role, holding plate 1
The thickness t1 of the covering member 9d between the electrodes 0 and 11 and the two electrode plates 9b and 9c is formed into a thin film having a thickness of about 25 to 100 .mu. To secure a good heat conducting action.
【0025】一方、発熱体素子9aの側方における被覆
部材9dの厚さt2 は1〜2mm程度に厚くして、発熱
体素子9aの保護を図るようにしてある。被覆部材9d
の具体的材質としては、高耐熱性の樹脂(例えば、ポリ
イミド樹脂等)が好ましい。上記電極板9bは正極側電
極板であり、また、上記電極板9cは負極側電極板であ
り、それぞれ外部回路との電気接続用の端子部9e、9
fが一体成形されている。この両端子部9e、9fは本
例では熱交換用コア部3の前方側(空気流れ方向Aと反
対方向)に突出している。また、正極側電極板9bの端
子部9eは図1に示すように正極側電極板9bの右側端
部に形成され、負極側電極板9cの端子部9fは負極側
電極板9cの左側端部に形成されている。両端子部9
e、9fの突出方向は熱交換用コア部3の後方側(空気
流れ方向A)でもよく、要は熱交換用コア部3の厚さ方
向であればよい。On the other hand, the thickness t2 of the covering member 9d on the side of the heating element 9a is increased to about 1 to 2 mm to protect the heating element 9a. Covering member 9d
As a specific material, a highly heat-resistant resin (for example, a polyimide resin or the like) is preferable. The electrode plate 9b is a positive electrode plate, and the electrode plate 9c is a negative electrode plate, and terminals 9e and 9 for electrical connection to an external circuit are provided, respectively.
f is integrally formed. In this example, the two terminal portions 9e and 9f protrude forward (in the direction opposite to the air flow direction A) of the heat exchange core portion 3. The terminal 9e of the positive electrode plate 9b is formed at the right end of the positive electrode plate 9b as shown in FIG. 1, and the terminal 9f of the negative electrode plate 9c is formed at the left end of the negative electrode plate 9c. Is formed. Both terminals 9
The projecting directions of e and 9f may be on the rear side (air flow direction A) of the heat exchange core portion 3, that is, it may be in the thickness direction of the heat exchange core portion 3.
【0026】なお、各電気発熱体9の電極板9b、9c
に一体成形された端子部9e、9fには、図示しない外
部制御回路が電気接続され、この外部制御回路を介して
車載電源から各電気発熱体9に通電されるようになって
いる。12、13はステンレスのような耐食性に優れた
金属材料からなる締結部材であって、熱交換用コア部3
の空気入口側の面および空気出口側の面の両方に配置さ
れる。締結部材12、13はその両端に折り曲げ形状か
らなる引掛け部を有しており、この引掛け部を上下のサ
イドプレート8a、8bの長手方向の中央部に形成され
た係止溝部8c、8dに引掛けて、上下のサイドプレー
ト8a、8bの間に装着する。この締結部材12、13
の装着により、電気発熱体9を2枚の保持板10、11
の間に圧接保持させる締付け力を熱交換用コア部3に対
して作用させる。The electrode plates 9b, 9c of each electric heating element 9
An external control circuit (not shown) is electrically connected to the terminal portions 9e and 9f integrally formed with the power supply unit, and power is supplied to each electric heating element 9 from a vehicle-mounted power supply via the external control circuit. Reference numerals 12 and 13 denote fastening members made of a metal material having excellent corrosion resistance such as stainless steel.
Are arranged on both the air inlet side surface and the air outlet side surface. Each of the fastening members 12 and 13 has a hook portion formed in a bent shape at both ends thereof, and this hook portion is provided with locking grooves 8c and 8d formed at the longitudinal center portions of the upper and lower side plates 8a and 8b. And attached between the upper and lower side plates 8a and 8b. The fastening members 12, 13
By mounting the electric heating element 9, the two holding plates 10, 11
Between the heat exchange core portion 3 and the clamping force to be pressed and held during the heat exchange.
【0027】次に、上記した暖房用熱交換器の製造方法
を説明すると、まず、最初に図1に示す熱交換器構成を
組み付けるコア組付工程を行う。すなわち、熱交換用コ
ア部3のチューブ6とコルゲートフィン7を交互に積層
するとともに、熱交換用コア部3のうち、電気発熱体9
が設置される部位(図1の4箇所の斜線部)では、隣接
するコルゲートフィン7の折り曲げ頂部の間に、チュー
ブ6の長手方向に延びる2枚の保持板10、11を所定
間隔を開けて配置する。この2枚の保持板10、11の
所定間隔を保持するために、この2枚の保持板10、1
1の間に、この所定間隔の板厚を持ったダミー板(図示
せず)を挿入する。Next, a method of manufacturing the above-described heating heat exchanger will be described. First, a core assembling step of assembling the heat exchanger configuration shown in FIG. 1 is performed. That is, the tubes 6 and the corrugated fins 7 of the heat exchange core 3 are alternately stacked, and the electric heating elements 9
In the part where the is installed (the four hatched portions in FIG. 1), two holding plates 10 and 11 extending in the longitudinal direction of the tube 6 are spaced apart from each other by a predetermined interval between the bent tops of the adjacent corrugated fins 7. Deploy. In order to maintain a predetermined interval between the two holding plates 10, 11, the two holding plates 10, 1
1, a dummy plate (not shown) having this predetermined thickness is inserted.
【0028】このダミー板は後述の一体ろう付けの工程
に対する耐熱性を有し、かつアルミニュウムろう付けさ
れない特性を持った材質(例えば、カーボン等)で形成
しておく。この組付工程で、タンク1、2、パイプ4、
5、およびサイドプレート8a、8bも組み付けること
はもちろんである。次に、上記のごとくして、組み付け
た熱交換器組付体の組付状態を図示しない適宜の治具に
より保持して、ろう付け炉内に搬入し、ろう付け工程を
行う。すなわち、ろう付け炉内で熱交換器組付体をろう
付け温度(600°C程度)に加熱して、熱交換器各部
材のクラッド材のろう材を溶融し、熱交換器組付体の各
部材間を一体ろう付けする。This dummy plate is formed of a material (for example, carbon or the like) having a heat resistance to an integral brazing step described later and a property not to be aluminum brazed. In this assembly process, tanks 1, 2, pipes 4,
Of course, 5 and the side plates 8a and 8b are also assembled. Next, as described above, the assembled state of the assembled heat exchanger assembly is held by an appropriate jig (not shown), carried into a brazing furnace, and a brazing step is performed. That is, the heat exchanger assembly is heated to a brazing temperature (about 600 ° C.) in a brazing furnace, and the brazing material of the clad material of each member of the heat exchanger is melted. The members are brazed together.
【0029】ろう付け終了後に、熱交換器組付体をろう
付け炉から搬出し、常温まで熱交換器組付体の温度が低
下した後に、電気発熱体9の組付工程を行う。すなわ
ち、電気発熱体9はそれ単独で、熱交換器組付体とは別
に、板状の発熱体素子9aの表裏両面を平板状の電極板
9b、9cにより挟み込んで3層のサンドウイッチ構造
とし、電極板9b、9cの周囲を全周にわたって被覆部
材9dにより被覆しておく。After the brazing is completed, the heat exchanger assembly is carried out of the brazing furnace, and after the temperature of the heat exchanger assembly has dropped to room temperature, the electric heating element 9 is assembled. In other words, the electric heating element 9 alone has a three-layer sandwich structure in which the front and back surfaces of the plate-shaped heating element 9a are sandwiched between the plate-shaped electrode plates 9b and 9c separately from the heat exchanger assembly. The entire periphery of the electrode plates 9b and 9c is covered with a covering member 9d.
【0030】そして、熱交換器組付体の熱交換用コア部
3における4箇所の2枚の保持板10、11の間に挿入
されているダミー板を取り出し、2枚の保持板10、1
1の間に形成される所定間隔の空間に、被覆部材9dが
保持板10、11に圧接するようにして、電気発熱体9
を2枚の保持板10、11の間に組み付ける。この組付
の後に、締結部材12、13の両端の引掛け部を上下の
サイドプレート8a、8bの係止溝部8c、8dに引掛
けて、上下のサイドプレート8a、8bの間に締結部材
12、13を熱交換用コア部3が圧縮されるように装着
する。Then, the dummy plate inserted between the four holding plates 10 and 11 in the heat exchange core 3 of the heat exchanger assembly is taken out, and the two holding plates 10 and 1 are taken out.
1 in such a manner that the covering member 9 d is pressed against the holding plates 10 and 11 in a space formed at a predetermined interval between the electric heating elements 9.
Is assembled between the two holding plates 10 and 11. After this assembling, the hook portions at both ends of the fastening members 12, 13 are hooked on the locking grooves 8c, 8d of the upper and lower side plates 8a, 8b, so that the fastening members 12 are located between the upper and lower side plates 8a, 8b. , 13 are mounted such that the heat exchange core 3 is compressed.
【0031】これにより、電気発熱体(9)を2枚の保
持板(10、11)の間に圧接保持させる締付け力を熱
交換用コア部(3)に対して作用させ、電気発熱体9を
2枚の保持板10、11の間に確実に保持固定する。次
に、上記構成において作動を説明する。車室の暖房を行
うときには、図示しない空調用送風機が作動して、暖房
用熱交換器のコア部3の偏平チューブ6とコルゲートフ
ィン7との間の空隙部に矢印Aのように暖房用空気が通
過する。一方、車両用エンジンのウォータポンプ(図示
せず)の作動によりエンジンからの温水(熱源流体)が
入口パイプ4より温水入口側タンク1内に流入する。Thus, a tightening force for pressing and holding the electric heating element (9) between the two holding plates (10, 11) is applied to the heat exchange core (3), and the electric heating element (9) is pressed. Is securely held and fixed between the two holding plates 10 and 11. Next, the operation of the above configuration will be described. When heating the passenger compartment, an air-conditioning blower (not shown) is operated, and the air for heating is provided in the space between the flat tube 6 and the corrugated fin 7 of the core portion 3 of the heating heat exchanger as shown by an arrow A. Passes. On the other hand, warm water (heat source fluid) from the engine flows into the warm water inlet side tank 1 from the inlet pipe 4 by the operation of the water pump (not shown) of the vehicle engine.
【0032】そして、温水は、入口側タンク1にて多数
本の偏平チューブ6に分配され、この偏平チューブ6を
並列に流れる間にコルゲートフィン7を介して暖房用空
気に放熱する。多数本の偏平チューブ6を通過した温水
は、温水出口側タンク2に流入し、ここで集合され、出
口パイプ5から温水は熱交換器外部へ流出し、エンジン
側に還流する。The hot water is distributed to a number of flat tubes 6 in the inlet side tank 1 and radiates heat to the heating air via the corrugated fins 7 while flowing through the flat tubes 6 in parallel. The hot water that has passed through the many flat tubes 6 flows into the hot water outlet side tank 2 and is collected there, and the hot water flows out of the heat exchanger from the outlet pipe 5 and returns to the engine side.
【0033】一方、暖房時において、エンジンからの温
水の温度が設定温度(例えば、80°C)より低いとき
は、外部制御回路から両電極板9b、9cの端子部9
e、9f間に車載電源から電圧を加える。これにより、
発熱体素子9aが通電され発熱する。発熱体素子9aの
発熱は電極板9b、9c、被覆部材9d、保持板10、
11を経て、両側のコルゲートフィン7に伝導されて、
このコルゲートフィン7から暖房用空気に放熱される。
従って、温水の低温時でも暖房空気を速やかに加熱して
即効暖房を行うことができる。On the other hand, when the temperature of the hot water from the engine is lower than the set temperature (for example, 80 ° C.) during heating, the external control circuit supplies the terminal portions 9 of the two electrode plates 9b and 9c.
Apply a voltage from the vehicle power supply between e and 9f. This allows
The heating element 9a is energized to generate heat. Heat generated by the heating element 9a is generated by the electrode plates 9b and 9c, the covering member 9d, the holding plate 10,
Through 11, it is conducted to the corrugated fins 7 on both sides,
Heat is radiated from the corrugated fins 7 to the heating air.
Therefore, even when the temperature of the hot water is low, the heating air can be quickly heated to perform the immediate heating.
【0034】なお、電気発熱体9の発熱体素子9aは所
定の設定温度T0 にて抵抗値が急増する正の抵抗温度特
性を有するPTC素子であるから、周知のごとく、その
発熱温度を設定温度T0 に自己制御する自己温度制御機
能を備えている。ところで、波形状を有する複雑な形状
からなるコルゲートフィン7に、予め保持板10、11
を接合しておき、この保持板10、11の平板形状に沿
って電気発熱体9の組付を行うから、電気発熱体9の組
付時にコルゲートフィン7の波形状をつぶすことがな
い。従って、電気発熱体9をコルゲートフィン7の間に
配置する構成であっても、コルゲートフィン7の波形状
を維持し伝熱性能を確保できる。The heating element 9a of the electric heating element 9 is a PTC element having a positive resistance temperature characteristic whose resistance value increases rapidly at a predetermined set temperature T 0 . A self-temperature control function for self-control to the temperature T 0 is provided. By the way, the holding plates 10 and 11 are previously attached to the corrugated fin 7 having a complex shape having a corrugated shape.
And the electric heating element 9 is assembled along the flat shape of the holding plates 10 and 11, so that the corrugated fins 7 do not collapse when the electric heating element 9 is assembled. Therefore, even if the electric heating element 9 is arranged between the corrugated fins 7, the corrugated fins 7 can be maintained in a corrugated shape and the heat transfer performance can be secured.
【0035】また、コルゲートフィン7に対して電気発
熱体9を直接接合する場合には、コルゲートフィン7の
折り曲げ高さに不揃いがあると、図4のa部、b部に示
すように、コルゲートフィン7の折り曲げ頂部と電気発
熱体9との間に隙間が発生して、電気発熱体9の熱を効
率よくコルゲートフィン7に伝導できない場合が生じ
る。これに反し、本実施形態によれば、コルゲートフィ
ン7と保持板10、11とを予めろう付けしているの
で、コルゲートフィン7の折り曲げ高さに多少の不揃い
があっても、ろう付け時に溶融ろう材が毛細管現象によ
りコルゲートフィン7の折り曲げ頂部と保持板10、1
1との隙間に浸透して、この隙間を埋めることができ
る。そのため、コルゲートフィン7の各折り曲げ頂部を
保持板10、11に確実に接合でき、電気発熱体9の発
生熱を保持板10、11からコルゲートフィン7に効率
よく伝導できる。When the electric heating element 9 is directly joined to the corrugated fin 7, if the bent height of the corrugated fin 7 is not uniform, as shown in FIG. A gap is formed between the bent top of the fin 7 and the electric heating element 9, and the heat of the electric heating element 9 may not be efficiently transmitted to the corrugated fin 7. In contrast, according to the present embodiment, since the corrugated fins 7 and the holding plates 10 and 11 are brazed in advance, even if the corrugated fins 7 have some irregularities in the bending height, they are melted during brazing. The brazing material is bent by capillarity to the bent top of the corrugated fin 7 and the holding plates 10 and 1.
1, and can fill this gap. Therefore, each bent top of the corrugated fin 7 can be securely joined to the holding plates 10 and 11, and the heat generated by the electric heating element 9 can be efficiently transmitted from the holding plates 10 and 11 to the corrugated fin 7.
【0036】(他の実施形態)なお、上記の実施形態で
は、車両暖房用熱交換器について説明したが、本発明は
車両用に限定されることなく、種々な用途の暖房用熱交
換器に広く適用可能である。また、電気発熱体9の設置
形態を図1の形態に限らず、暖房用熱交換器の仕様の変
化に対応して種々変更し得ることはもちろんである。(Other Embodiments) In the above embodiments, the heat exchanger for heating a vehicle has been described. However, the present invention is not limited to a heat exchanger for a vehicle, but may be applied to a heat exchanger for heating for various purposes. Widely applicable. Further, the installation form of the electric heating element 9 is not limited to the form shown in FIG. 1, and it is needless to say that various changes can be made in response to changes in the specifications of the heating heat exchanger.
【0037】また、電気発熱体9の被覆部材9dとして
接着材系の樹脂を用いて、電気発熱体9を保持板10、
11に接着固定することもできる。この場合は締結部材
12、13を廃止することができる。Further, the electric heating element 9 is made of an adhesive resin as a covering member 9 d of the electric heating element 9, and the electric heating element 9 is attached to the holding plate 10.
11 can also be adhesively fixed. In this case, the fastening members 12 and 13 can be eliminated.
【図1】本発明を適用する暖房用熱交換器の斜視図であ
る。FIG. 1 is a perspective view of a heating heat exchanger to which the present invention is applied.
【図2】本発明の一実施形態を示す電気発熱体設置部の
拡大斜視図である。FIG. 2 is an enlarged perspective view of an electric heating element installation section showing one embodiment of the present invention.
【図3】(a)は本発明の一実施形態の電気発熱体の一
部破断斜視図、(b)は同電気発熱体の横断面図、
(c)は同電気発熱体の縦断面図、(d)は同電気発熱
体の平面図である。3A is a partially cutaway perspective view of an electric heating element according to an embodiment of the present invention, FIG. 3B is a cross-sectional view of the electric heating element,
(C) is a longitudinal sectional view of the electric heating element, and (d) is a plan view of the electric heating element.
【図4】本発明の比較例を示す電気発熱体設置部の拡大
図である。FIG. 4 is an enlarged view of an electric heating element installation portion showing a comparative example of the present invention.
1、2…タンク、3…熱交換用コア部、6…偏平チュー
ブ、7…コルゲートフィン、9…電気発熱体、9a…発
熱体素子、9b、9c…電極板、9d…被覆部材、9
e、9f…端子部、10、11…保持板、12、13…
締結部材。1, 2, tank, 3 heat exchange core, 6 flat tube, 7 corrugated fin, 9 electric heating element, 9a heating element, 9b, 9c electrode plate, 9d coating member, 9
e, 9f terminal part, 10, 11 holding plate, 12, 13 ...
Fastening members.
Claims (7)
を多数本並列配置するとともに、この多数本の偏平チュ
ーブ(6)の間にコルゲートフィン(7)を接合するこ
とにより熱交換用コア部(3)が構成されており、 この熱交換用コア部(3)の一部の部位に電気発熱体
(9)を設置する暖房用熱交換器において、 前記熱交換用コア部(3)のうち、前記電気発熱体
(9)が設置される部位では、隣接するコルゲートフィ
ン(7)の折り曲げ頂部に、それぞれ前記偏平チューブ
(6)の長手方向に延びる保持板(10、11)を所定
間隔を開けて接合し、 この2枚の保持板(10、11)の間に前記電気発熱体
(9)を電気絶縁して組み付けたことを特徴とする暖房
用熱交換器。1. A flat tube through which a heat source fluid flows.
Are arranged in parallel, and a corrugated fin (7) is joined between the many flat tubes (6) to form a heat exchange core (3). In a heating heat exchanger in which an electric heating element (9) is installed in a part of (3), a part of the heat exchanging core (3) where the electric heating element (9) is installed is: The holding plates (10, 11) extending in the longitudinal direction of the flat tube (6) are respectively joined to the bent tops of the adjacent corrugated fins (7) at predetermined intervals, and the two holding plates (10, A heating heat exchanger wherein the electric heating element (9) is electrically insulated and assembled during 11).
トフィン(7)および前記保持板(10、11)はアル
ミニュウムからなり、一体ろう付けされていることを特
徴とする請求項1に記載の暖房用熱交換器。2. The heating system according to claim 1, wherein the flat tubes, the corrugated fins, and the holding plates are made of aluminum and are integrally brazed. For heat exchanger.
(9b)および負極側電極板(9c)と、この両電極板
(9b、9c)の間に配置された発熱体素子(9a)と
を備えるとともに、 この両電極板(9b、9c)の周囲を電気絶縁材料から
なる被覆部材(9d)により被覆し、 この被覆部材(9d)の表面が前記保持板(10、1
1)に圧接するようにして、前記電気発熱体(9)を前
記2枚の保持板(10、11)の間に組み付けたことを
特徴とする請求項1または2に記載の暖房用熱交換器。3. The electric heating element (9) includes a positive electrode plate (9b) and a negative electrode plate (9c), and a heating element (9b) arranged between the two electrode plates (9b, 9c). 9a), and the periphery of the two electrode plates (9b, 9c) is covered with a covering member (9d) made of an electrically insulating material. The surface of the covering member (9d) is covered with the holding plate (10, 1).
Heat exchange for heating according to claim 1 or 2, wherein the electric heating element (9) is assembled between the two holding plates (10, 11) so as to be pressed against 1). vessel.
極側電極板(9c)に、それぞれ外部回路との電気接続
用の端子部(9e、9f)が一体成形されていることを
特徴とする請求項3に記載の暖房用熱交換器。4. A terminal part (9e, 9f) for electrical connection to an external circuit is integrally formed on each of the positive electrode plate (9b) and the negative electrode plate (9c). The heat exchanger for heating according to claim 3 which does.
側電極板(9b)および前記負極側電極板(9c)から
前記熱交換用コア部(3)の厚さ方向に突出しているこ
とを特徴とする請求項4に記載の暖房用熱交換器。5. The terminal portions (9e, 9f) protrude from the positive electrode plate (9b) and the negative electrode plate (9c) in the thickness direction of the heat exchange core (3). The heat exchanger for heating according to claim 4, characterized in that:
発熱体(9)を前記2枚の保持板(10、11)の間で
圧接保持するように締付け力を作用させる締結部材(1
2、13)を備えていることを特徴とする請求項1ない
し5のいずれか1つに記載の暖房用熱交換器。6. A fastening member for applying a tightening force to the heat exchange core (3) so as to press-hold the electric heating element (9) between the two holding plates (10, 11). (1
The heat exchanger for heating according to any one of claims 1 to 5, further comprising (2, 13).
を多数本並列配置するとともに、この多数本の偏平チュ
ーブ(6)の間にコルゲートフィン(7)を接合するこ
とにより熱交換用コア部(3)が構成されており、 この熱交換用コア部(3)の一部の部位に電気発熱体
(9)を設置する暖房用熱交換器の製造方法であって、 前記熱交換用コア部(3)の偏平チューブ(6)とコル
ゲートフィン(7)を交互に積層するとともに、前記熱
交換用コア部(3)のうち、前記電気発熱体(9)が設
置される部位では、隣接するコルゲートフィン(7)の
折り曲げ頂部の間に、前記偏平チューブ(6)の長手方
向に延びる2枚の保持板(10、11)を所定間隔を開
けて配置するコア組付工程と、 前記熱交換用コア部(3)の偏平チューブ(6)および
コルゲートフィン(7)と前記保持板(10、11)と
を一体ろう付けするろう付け工程と、 前記2枚の保持板(10、11)の間に前記電気発熱体
(9)を組み付ける発熱体組付工程とを有することを特
徴とする暖房用熱交換器の製造方法。7. A flat tube through which a heat source fluid flows.
Are arranged in parallel, and a corrugated fin (7) is joined between the many flat tubes (6) to form a heat exchange core (3). (3) A method for manufacturing a heat exchanger for heating, in which an electric heating element (9) is installed at a part of a part, wherein the flat tube (6) and the corrugated fin (7) of the heat exchange core (3) are provided. ) Are alternately stacked, and at the portion of the heat exchange core (3) where the electric heating element (9) is installed, the flattening is performed between the bent tops of the adjacent corrugated fins (7). A core assembling step of arranging two holding plates (10, 11) extending in the longitudinal direction of the tube (6) at a predetermined interval; and a flat tube (6) and a corrugate of the heat exchange core (3). Fin (7) and the holding plate (10, 1) a heating step of integrally brazing; and a heating element assembling step of assembling the electric heating element (9) between the two holding plates (10, 11). Manufacturing method of heat exchanger for industrial use.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9241797A JP3812045B2 (en) | 1997-04-10 | 1997-04-10 | Heat exchanger for heating |
KR1019980003167A KR100334619B1 (en) | 1997-02-06 | 1998-02-04 | Core unit of heat exchanger having electric heater |
CNB981064477A CN1145777C (en) | 1997-02-06 | 1998-02-06 | Heat exchanger core with electric heater |
EP98102091A EP0857922B1 (en) | 1997-02-06 | 1998-02-06 | Core unit of heat exchanger having electric heater |
DE69813650T DE69813650T2 (en) | 1997-02-06 | 1998-02-06 | Core unit of a heat exchanger with an electric heater |
US09/459,867 US6178292B1 (en) | 1997-02-06 | 1999-12-13 | Core unit of heat exchanger having electric heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9241797A JP3812045B2 (en) | 1997-04-10 | 1997-04-10 | Heat exchanger for heating |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10288493A true JPH10288493A (en) | 1998-10-27 |
JP3812045B2 JP3812045B2 (en) | 2006-08-23 |
Family
ID=14053849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9241797A Expired - Fee Related JP3812045B2 (en) | 1997-02-06 | 1997-04-10 | Heat exchanger for heating |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3812045B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000142084A (en) * | 1998-11-18 | 2000-05-23 | Denso Corp | Air conditioner for vehicle |
US6178292B1 (en) | 1997-02-06 | 2001-01-23 | Denso Corporation | Core unit of heat exchanger having electric heater |
KR100933208B1 (en) | 2003-04-14 | 2009-12-21 | 한라공조주식회사 | Auxiliary Heater Fixture |
JP2014527698A (en) * | 2011-08-30 | 2014-10-16 | ベバスト エスエー | Electric heating unit, vehicle heating device, and method of manufacturing a heating unit |
WO2018159137A1 (en) * | 2017-03-03 | 2018-09-07 | 株式会社デンソー | Heat exchanger |
-
1997
- 1997-04-10 JP JP9241797A patent/JP3812045B2/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6178292B1 (en) | 1997-02-06 | 2001-01-23 | Denso Corporation | Core unit of heat exchanger having electric heater |
JP2000142084A (en) * | 1998-11-18 | 2000-05-23 | Denso Corp | Air conditioner for vehicle |
KR100933208B1 (en) | 2003-04-14 | 2009-12-21 | 한라공조주식회사 | Auxiliary Heater Fixture |
JP2014527698A (en) * | 2011-08-30 | 2014-10-16 | ベバスト エスエー | Electric heating unit, vehicle heating device, and method of manufacturing a heating unit |
JP2016129136A (en) * | 2011-08-30 | 2016-07-14 | ベバスト エスエー | Electrical heating unit, heating device for vehicle and method for producing heating unit |
WO2018159137A1 (en) * | 2017-03-03 | 2018-09-07 | 株式会社デンソー | Heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
JP3812045B2 (en) | 2006-08-23 |
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