JPS60122877A - Evaporator with defrosting heater tube - Google Patents
Evaporator with defrosting heater tubeInfo
- Publication number
- JPS60122877A JPS60122877A JP24230484A JP24230484A JPS60122877A JP S60122877 A JPS60122877 A JP S60122877A JP 24230484 A JP24230484 A JP 24230484A JP 24230484 A JP24230484 A JP 24230484A JP S60122877 A JPS60122877 A JP S60122877A
- Authority
- JP
- Japan
- Prior art keywords
- evaporator
- defrost heater
- tube
- heater tube
- aluminum alloy
- 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.)
- Pending
Links
Landscapes
- Defrosting Systems (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、冷蔵庫などにおける、霜取りヒータ管をそな
えた蒸発器に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an evaporator equipped with a defrost heater tube in a refrigerator or the like.
間隔を置いて並列に配置した複数枚のフィンに、冷媒管
および霜取りヒータ管等を挿通、または圧入し、霜取り
ヒータ管に霜取りヒータを内蔵させた従来の蒸発器にお
いては、冷蔵庫内の食品などから発生する各種のイオン
などにより霜取りヒータ管が腐食され、穴があくに至っ
た場合には、その六から水が侵入し、霜取りヒータの絶
縁劣化により感電などの電気的事故を招く。このため、
霜取りヒータ管の材料には、耐食性にすぐれた銅、ステ
ンレスを使用したり１価格の低廉なアルミニウムを使用
したりしている。アルミニウムを使用する場合には、耐
食性を増大させるために、アルマイト処理やベーマイト
処理などの表面処理を施す必要がある。したがって、原
価が高くなる。また、アルミニウムにアルマイト処理や
ベーマイト処理などを施しても、冷媒管と霜取りヒータ
管の穴あきに至る時期がほぼ同じか、あるいは霜取りヒ
ータ管が先に穴あきに至ることが考えられ、内蔵された
ヒータが、水に対して絶縁不良を起しゃすいＭｇＯやガ
ラス繊維で被覆されたものである場合には、感電事故を
招くおそ九がある。In conventional evaporators, a refrigerant pipe and a defrost heater pipe are inserted or press-fitted into multiple fins arranged in parallel at intervals, and the defrost heater is built into the defrost heater pipe. If the defrost heater tube is corroded by various ions generated from the defrost heater and a hole is formed, water will enter through the hole, causing electrical accidents such as electric shock due to deterioration of the defrost heater's insulation. For this reason,
The defrosting heater tube is made of copper, stainless steel, which has excellent corrosion resistance, or aluminum, which is inexpensive. When using aluminum, it is necessary to perform surface treatment such as alumite treatment or boehmite treatment to increase corrosion resistance. Therefore, the cost becomes high. Furthermore, even if aluminum is subjected to alumite treatment or boehmite treatment, the refrigerant pipe and the defrost heater tube may become perforated at approximately the same time, or the defrost heater pipe may become perforated first. If the heater is coated with MgO or glass fiber, which tends to cause poor insulation against water, there is a risk of electric shock.
〔発明の目的〕 。[Object of the invention].
本発明は、価格の低廉なアルミニウム合金を使用し、し
かも耐食性を増大するための表面処理を施すことなく、
電気的事故を未然に防ぐことができる霜取りヒータ管を
そなえた蒸発器を提供することを目的とするものである
。The present invention uses an inexpensive aluminum alloy and does not require surface treatment to increase corrosion resistance.
The object of the present invention is to provide an evaporator equipped with a defrosting heater tube that can prevent electrical accidents.
本発明は間隔を置いて並列に配置した複数枚の板状フィ
ンに、アルミニウム合金からなる冷媒管と霜取りヒータ
管とを圧入した蒸発器において、上記霜取りヒータ管が
、Ａ Ｑ −Ｍ ｎ系のアルミ合金材の芯材と純アルミ
系材、またはＡ Ｑ −Ｍ ｎ系、もしくはＡＱ−Ｍｇ
系のアルミ合金材の皮材との合せ管とし、更に芯材と皮
材との肉厚の和を上記冷媒管の肉厚より大きくするとと
もに、上記霜取りヒータ管の芯材の肉厚を冷媒管の肉厚
より大きくしたものである。The present invention provides an evaporator in which a refrigerant tube made of an aluminum alloy and a defrost heater tube are press-fitted into a plurality of plate-like fins arranged in parallel at intervals, in which the defrost heater tube is made of AQ-Mn type. Aluminum alloy core material and pure aluminum material, AQ-M n series, or AQ-Mg
The core material of the defrosting heater tube is made of aluminum alloy, and the sum of the wall thicknesses of the core material and the skin material is larger than the thickness of the refrigerant pipe, and the thickness of the core material of the defrosting heater pipe is It is made larger than the wall thickness of the pipe.
以下、本発明の実施態様を図面により説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は蒸発器の一部を示し、１は間隔を置いて並列さ
せた複数枚の板状フィン、２は冷媒管、３は霜取りヒー
タ管で、両管２．３はそれぞれ板状フィン１に挿入し、
または圧入されている。４は霜取りヒータ管３に内蔵さ
せた霜取りヒータである。Figure 1 shows a part of the evaporator, where 1 is a plurality of plate-like fins arranged in parallel at intervals, 2 is a refrigerant pipe, 3 is a defrost heater pipe, and both pipes 2 and 3 are plate-like fins, respectively. Insert it into 1,
or press-fitted. 4 is a defrost heater built into the defrost heater tube 3.
第２図は第１図の断面平面図である。霜取りヒータ管３
の肉厚ｔ１は、冷媒管２の肉厚ｔ２より大きくしである
。この構造により、低廉なアルミニウム合金を用いても
、電気的事故を防止できる信頼性の高い蒸発器が得られ
る。FIG. 2 is a cross-sectional plan view of FIG. 1. Defrost heater tube 3
The wall thickness t1 of the refrigerant pipe 2 is larger than the wall thickness t2 of the refrigerant pipe 2. With this structure, even if an inexpensive aluminum alloy is used, a highly reliable evaporator that can prevent electrical accidents can be obtained.
第３図は霜取りヒータ管３に、芯材３ａと皮材３ｂとか
らなる合せ管（クラツド管）を用いた実施態様である。FIG. 3 shows an embodiment in which the defrosting heater tube 3 is a clad tube consisting of a core material 3a and a skin material 3b.
通常、冷蔵庫などに使用する蒸発器においては、耐食性
を必要とするため、純アルミ系（ＪＩＳ規格では１００
０番台）のＡ１０５０杯、 Ａ １０７０材などを使用
しているが、皮材３ｂにはＡ Ｑ −Ｚ ｎ −Ｍ ｇ
系（ＪＩＳ規格では７０７２材）のアルミニウム合金を
用い、芯材３ａには純アルミ系、またはＡ Ｑ −Ｍ
ｎ系（ＪＩＳ規格では３００３材）、Ａｆｆ−Ｍｇ系な
どのアルミニウム合金材を用いる。しかも、芯材３ａの
肉厚ｔｅａと皮材３ｂの肉厚ｔｕｂとの和を、冷媒管２
の肉厚ｔ２より大きくする（ｔ、ａ＋ ｔ、ｂ＞ ｔ２
）ことにより、皮材３ｂの７０７２材の犠牲的表面腐食
の作用と肉厚の差による耐用期間の違いで、電気的事故
に関して信頼性の高い蒸発器が得られる。Normally, evaporators used in refrigerators etc. require corrosion resistance, so they are made of pure aluminum (100% according to JIS standards).
0 series) A1050 and A1070 materials are used, but AQ-Zn-Mg is used for the skin material 3b.
aluminum alloy (7072 material according to JIS standards) is used, and the core material 3a is made of pure aluminum or AQ-M.
An aluminum alloy material such as n-type (3003 material according to JIS standard) or Aff-Mg type is used. Moreover, the sum of the wall thickness tea of the core material 3a and the wall thickness tub of the skin material 3b is determined by the refrigerant pipe 2.
(t, a+ t, b> t2
), a highly reliable evaporator with respect to electrical accidents can be obtained due to the effect of sacrificial surface corrosion of the 7072 material of the skin material 3b and the difference in service life due to the difference in wall thickness.
さらに、芯材３ａの肉厚ｔ＋ａを冷媒管２の肉厚ｔ２よ
り大きくする（ｔ＋ａ＞ｔ２）ことにより、より信頼性
の向上をはかることができる。Furthermore, by making the wall thickness t+a of the core material 3a larger than the wall thickness t2 of the refrigerant pipe 2 (t+a>t2), reliability can be further improved.
霜取りヒータ管３の肉厚を冷媒管２の肉厚より大きくす
れば、常に同一環境におかれる両管３゜２では、肉厚の
差分だけ穴あきに至る時期があるゆえ、冷媒管２にさき
に穴があいた場合でも、冷媒ガス洩れ事故のみであり、
電気的な人身事故は未然に防ぐことができる。If the wall thickness of the defrosting heater tube 3 is made larger than the wall thickness of the refrigerant tube 2, the refrigerant tube 2 will Even if there is a hole at the beginning, it is only a refrigerant gas leakage accident.
Electrical accidents can be prevented.
なお、アルミニウム合金を使用した蒸発器は、冷蔵庫等
の使用環境でほぼとん穴あきに至ることは考えられない
が、特異的な使用状態においても人身事故を防止するこ
とができる。Although it is highly unlikely that an evaporator made of aluminum alloy will be punctured in an environment where it is used in a refrigerator or the like, it is possible to prevent personal injury even under specific usage conditions.
以上説明したように、本発明し；よれ番よ１価格の低廉
なアルミニウム材を使用し、し力１も、耐食性り増大さ
せる表面処理を施すことなく、電気的事故に関して信頼
性の高ｂ）蒸発器を提供することができ１合せ管の採用
によりさら番；信頼性を向上することができる。As explained above, the present invention uses low-cost aluminum material, has high strength, and is highly reliable in terms of electrical accidents without any surface treatment to increase corrosion resistance.b) The evaporator can be provided, and reliability can be improved by adopting a single-pipe tube.
第１図は蒸発器の一部を示す斜視図、第２図。
第３図は本発明の異なる実施態様を示す断面平面図、第
４図は無処理及びベーマイト処理アルミノ（イブの耐食
試験結果を示す図である。
■・・・板状フィン、２・・・冷媒管、３・・・霜取り
ヒータ管、３ａ・・・芯材、３ｂ・・・皮材、４・・・
霜取りヒータ。
菓 １ 口
＃２３
茎３ 口FIG. 1 is a perspective view showing a part of the evaporator, and FIG. 2 is a perspective view showing a part of the evaporator. FIG. 3 is a cross-sectional plan view showing different embodiments of the present invention, and FIG. 4 is a diagram showing the results of a corrosion resistance test of untreated and boehmite-treated alumina. Refrigerant pipe, 3... Defrosting heater pipe, 3a... Core material, 3b... Skin material, 4...
Defrost heater. Confectionery 1 mouth #23 Stem 3 mouth
Claims (1)
に、アルミニウム合金からなる冷媒管と霜取りヒータ管
とを圧入した蒸発器において、上記霜取りヒータ管が、
Ａρ−Ｍｎ系のアルミ合金材の芯材と純アルミ系材、ま
たはＡρ−Ｍｎ系、もしくはＡＱ−Ｍｇ系のアルミ合金
材の皮材との合せ管とし、更に芯材と皮材との肉厚の和
を上記冷媒管の肉厚より大きくするとともに上記霜取り
ヒータ管の芯材の肉厚を冷媒管の肉厚より大きくしたこ
とを特徴とする霜取りヒータ管を具備した蒸発器。1. In an evaporator in which a refrigerant tube made of an aluminum alloy and a defrost heater tube are press-fitted into a plurality of plate-shaped fins arranged in parallel at intervals, the defrost heater tube is
The core material of Aρ-Mn-based aluminum alloy material and the skin material of pure aluminum material, or the Aρ-Mn-based or AQ-Mg-based aluminum alloy material are combined together, and the core material and the skin material are combined together. An evaporator equipped with a defrost heater tube, characterized in that the sum of the thicknesses is greater than the thickness of the refrigerant tube, and the thickness of the core material of the defrost heater tube is greater than the thickness of the refrigerant tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24230484A JPS60122877A (en) | 1984-11-19 | 1984-11-19 | Evaporator with defrosting heater tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24230484A JPS60122877A (en) | 1984-11-19 | 1984-11-19 | Evaporator with defrosting heater tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60122877A true JPS60122877A (en) | 1985-07-01 |
Family
ID=17087231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24230484A Pending JPS60122877A (en) | 1984-11-19 | 1984-11-19 | Evaporator with defrosting heater tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60122877A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504285U (en) * | 1973-05-11 | 1975-01-17 |
-
1984
- 1984-11-19 JP JP24230484A patent/JPS60122877A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504285U (en) * | 1973-05-11 | 1975-01-17 |
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