JPS61143629A - Heater - Google Patents
HeaterInfo
- Publication number
- JPS61143629A JPS61143629A JP26664884A JP26664884A JPS61143629A JP S61143629 A JPS61143629 A JP S61143629A JP 26664884 A JP26664884 A JP 26664884A JP 26664884 A JP26664884 A JP 26664884A JP S61143629 A JPS61143629 A JP S61143629A
- Authority
- JP
- Japan
- Prior art keywords
- ptc
- heating
- resistance
- heating element
- heat
- 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
- 238000010438 heat treatment Methods 0.000 claims abstract description 66
- 230000005855 radiation Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229920006038 crystalline resin Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920006214 polyvinylidene halide Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
Landscapes
- Surface Heating Bodies (AREA)
- Electric Stoves And Ranges (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、やぐらこたつ、パネルヒータ等の採暖器具、
特にその発熱ユニットの構成に関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention is applicable to heating appliances such as kotatsu and panel heaters,
In particular, it relates to the configuration of the heat generating unit.
従来の技術
従来のこの種の採暖器具の発熱体ユニットの構成として
は、例えば、実開昭５７−１８６９９７号公報に示され
ているように、第６図のような構造となっていた。2. Description of the Related Art A conventional heating unit of this type of heating device has a structure as shown in FIG. 6, as shown in, for example, Japanese Utility Model Application Publication No. 57-186997.
すなわち、絶縁基板１上に相対向するように一対の帯状
電極２が設けられ、その上からＰＴＣ発熱抵抗体３が設
けられる構成のものであった。この発熱体ユニットは、
このＰＴＣ特性により、通電初期時に大きな電力が入り
、急速に温度上昇され、ある自己制御温度で安定な温度
を維持することができ、さらに通常のＰＴＣ特性のない
発熱体では必要となる温度過昇防止器等が不要で薄型化
できるという利点も有していた。That is, a pair of band-shaped electrodes 2 were provided on an insulating substrate 1 so as to face each other, and a PTC heating resistor 3 was provided thereon. This heating element unit is
Due to this PTC characteristic, a large amount of power is applied at the initial stage of energization, the temperature is rapidly raised, and a stable temperature can be maintained at a certain self-control temperature, and in addition, the temperature can be increased even more than usual with heating elements without PTC characteristics. It also had the advantage of not requiring a preventer or the like and could be made thinner.
上記の如く速熱性をこの通常の発熱体で実現しようと思
えば例えば、特開昭５８−１９６５２号公報等の如（温
度検知体、通電時間の制御回路等を設けることにより可
能とはなるものの、非常に複雑な構成にならざるを得な
かった。If you want to achieve the above-mentioned rapid heating properties with this ordinary heating element, for example, as described in Japanese Patent Application Laid-Open No. 19652/1983 (although it is possible to achieve this by providing a temperature sensor, a control circuit for the energization time, etc.), , the structure had to be extremely complicated.
このように、第６図に示すＰＴＣ発熱体構成を用いると
、技術的に一歩進んだ採暖器具を実現することかできる
ものであった。As described above, by using the PTC heating element configuration shown in FIG. 6, it was possible to realize a technically advanced heating device.
発明が解決しようとする問題点
しかし、このＰＴＣ発熱体ユニットは、絶縁基板１を介
して、採暖器具の放熱板等に熱的に結合されて構成され
るが、特にこの放熱面積が大きい場合、外部への漏洩電
流が太き（なり、使用者に大きな不快感を与えるという
大きな問題点を有していた。これは絶縁基板１を介して
ＰＴＣ抵抗体３及び電極２と使用者の接触する採暖器具
本体表面との間で直流回路が形成されるために′発生す
るもので、固有抵抗のきわめて高い絶縁基板１でもこの
直流回路の形成される絶縁基板１の面積が大きいほどま
たこの厚みが薄いほどこの漏洩電流が大きくなる。一方
、絶縁基板１の厚みはこの放熱板との熱的な結合をよく
するためには太き（することはできず、耐電圧性能を満
足する最小厚みに設定せざるを得ない。Problems to be Solved by the Invention However, this PTC heating element unit is configured to be thermally coupled to a heat sink or the like of a heating appliance through an insulating substrate 1, but especially when this heat dissipation area is large, This has had a major problem in that the leakage current to the outside is large and causes great discomfort to the user. This occurs due to the formation of a DC circuit between the surface of the heating device and the surface of the heating device. Even with an insulating substrate 1 that has an extremely high specific resistance, the larger the area of the insulating substrate 1 on which this DC circuit is formed, the greater the thickness. The thinner the insulating substrate 1 is, the greater this leakage current will be.On the other hand, the thickness of the insulating substrate 1 must be made thicker in order to improve the thermal coupling with the heat sink (it cannot be made thicker, so it should be set to the minimum thickness that satisfies the withstand voltage performance). I have no choice but to set it.
また、放熱板等の外表面が金属等の導電体である場合、
あるいは多くの水分を含んでいる場合等にさらに漏洩電
流は大きくなり、採暖器具の使用上、重大な問題となる
。In addition, if the outer surface of the heat sink etc. is a conductor such as metal,
Alternatively, if it contains a large amount of moisture, the leakage current will become even larger, which will pose a serious problem when using the heating device.
ここで、ＰＴＣ抵抗体３及び電極２の装架面積を小さく
すると、漏洩電流は小さくなるものの、放熱量もこれに
比例して小さくなり十分な採暖は得られなくなってしま
う。また、これに適応する如く、発熱体を高発熱量にし
た場合は、ＰＴＣ抵抗体ａの抵抗分布の不均一性、外部
よりの断熱状態の部分的差異あるいは外部よりの局所過
熱等により、一旦温度分布が若干でも生じると、ＰＴＣ
抵抗体３のＰＴＣ特性により電圧が局部に集中し温度差
が助長され増大され、異常な発熱分布、発煙・発火を起
こすという非常に危険な面を有していた。この現象を以
下の説明では電圧集中現象と呼ぶことにするが、この電
圧集中現象は、発熱量を太きするほど発生しゃすく、従
来は、この発熱量を制限したり、あるいは、非常に熱伝
導性に優れた基板等を用いるかして、この電圧集中現象
に対処せねばならなかった。Here, if the mounting area of the PTC resistor 3 and the electrode 2 is reduced, the leakage current is reduced, but the amount of heat radiation is also reduced in proportion to this, making it impossible to obtain sufficient heating. In addition, if the heat generating element is made to have a high calorific value in order to adapt to this, it may be possible to temporarily reduce the temperature due to non-uniform resistance distribution of the PTC resistor a, partial differences in the insulation state from the outside, or local overheating from the outside. If even a slight temperature distribution occurs, PTC
Due to the PTC characteristics of the resistor 3, the voltage is locally concentrated and the temperature difference is promoted and increased, resulting in abnormal heat distribution, smoke generation, and ignition, which is very dangerous. This phenomenon will be referred to as a voltage concentration phenomenon in the following explanation, but this voltage concentration phenomenon occurs more easily as the amount of heat generated increases. This voltage concentration phenomenon had to be dealt with by using a substrate with excellent conductivity.
そこで、本発明は従来の問題点を解消するものであり、
外部への漏洩電流を抑えた安全でしかも使用感のよい採
暖器具を提供することを目的とする。Therefore, the present invention solves the conventional problems,
To provide a heating device that is safe and easy to use, suppressing leakage current to the outside.
問題点を解決するための手段
上記問題点を解決する技術的手段は、薄肉板状のＰＴＣ
抵抗体の両面に一対の電極を配した発熱体を放熱体に熱
的に結合したものである。Means for solving the problem The technical means for solving the above problem is to use a thin plate-like PTC.
A heating element with a pair of electrodes arranged on both sides of a resistor is thermally coupled to a heat sink.
作 用
このＰＴＣ抵抗体は薄肉板状であるのでこの両面に構成
される一対の電極間の熱抵抗も小さくなり温度分布も小
さくなるため、前記電圧集中現象が発生せずに安全な高
発熱量可能な発熱体が実現できる。これを採暖器具の放
熱体に適宜装架させることにより、放熱体の放熱面積あ
たりのこの発熱体の装架面積を小さくすることができる
ため、外部への漏洩電流を小さく抑えることができ、ま
たこの発熱体のＰＴＣ特性により速熱性、薄型化を図っ
た採暖器具を実現できる。Function: Since this PTC resistor is in the form of a thin plate, the thermal resistance between the pair of electrodes formed on both sides is also small, and the temperature distribution is also small, so the voltage concentration phenomenon described above does not occur and a safe high heat output is achieved. A possible heating element can be realized. By appropriately mounting this on the heat radiating element of the heating appliance, the installation area of this heating element can be reduced per the heat radiating area of the heat radiating element, so leakage current to the outside can be suppressed. The PTC characteristic of this heating element makes it possible to realize a heating device that heats up quickly and is thin.
実施例
以下、本発明の一実施例を添付図面に基づいて説明する
。EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings.
第２図は、本発明の採暖器具の一例として、やぐらこた
つの実施例である。４はやぐらこたつ本体であり放熱板
５，５′がビス６により取付けられている。またこの放
熱板５，５′にはＰＴＣ発熱体７が６個接着されている
。このＰＴＣ発熱体７は、第１図に示すように、薄肉板
状のＰＴＣ抵抗体８の両面に一対の電極９，９′が配さ
れている構造である。FIG. 2 shows an embodiment of a tower kotatsu as an example of the heating device of the present invention. Reference numeral 4 denotes the main body of the tower kotatsu, to which heat sinks 5 and 5' are attached with screws 6. Further, six PTC heating elements 7 are bonded to the heat sinks 5, 5'. As shown in FIG. 1, this PTC heating element 7 has a structure in which a pair of electrodes 9 and 9' are arranged on both sides of a thin plate-shaped PTC resistor 8.
またこのＰＴＣ発熱体７部分の断面図を第３図に示すが
、ＰＴＣ抵抗体７は、絶縁板１０ 、１０’を介して放
熱板５，５と熱的に結合されている。FIG. 3 shows a sectional view of a portion of the PTC heating element 7, and the PTC resistor 7 is thermally coupled to heat sinks 5, 5 via insulating plates 10, 10'.
ここでＰＴＣ抵抗体８はカーボンブラックを中心とする
粒子状導電剤を含有させた高分子組成物であり、例えば
これに用いる樹脂としてはポリエチレン−酢酸ビニル共
重合体、ポリエチレン−エチルアクリレート共重合体、
ポリエチレン、ポリプロピレン等のポリオレフィンやポ
リアミド、ポリハロゲン化ビニリデン、ポリエステル等
の結晶性樹脂があり、各々の結晶変態点付近で急激な正
の温度係数を示す。また一対の電極９．９の距離は０，
３〜３朋程度であり、ＰＴＣ抵抗体８は高比抵抗の組成
物でよく、自己温度制御性のためのＰＴＣ特性は容易に
得られる。Here, the PTC resistor 8 is a polymer composition containing a particulate conductive agent mainly composed of carbon black, and examples of the resin used therefor include polyethylene-vinyl acetate copolymer and polyethylene-ethyl acrylate copolymer. ,
There are crystalline resins such as polyolefins such as polyethylene and polypropylene, polyamides, polyvinylidene halides, and polyesters, and each exhibits a sharp positive temperature coefficient near its crystal transformation point. Also, the distance between the pair of electrodes 9.9 is 0,
The PTC resistor 8 may be made of a composition having a high specific resistance, and the PTC characteristic for self-temperature control can be easily obtained.
本実施例ではＰＴＣ発熱体７は上記材料により高発熱量
に設定してあり、この放熱面全体を十分に発熱させるこ
とができる。第４図に第２図のＸ−Ｘ方向切断面を示し
ている。図中入方向が放熱方向であり、逆方向はやぐら
こたつ本体４により断熱されている。この図に明確に示
されるように、ＰＴＣ発熱体７はＸ−Ｘ方向断面で３０
％しか占めておらず放熱面全面積では約２０％の装架率
である。このため外部への漏洩電流も非常に小さく抑え
られ、入方向の面で浸水させた最悪の状態で通電し、漏
洩電流を測定したところ０．２ｍＡまで抑えることがで
き、使用上全く支障のない漏洩電流の値にすることがで
きた。この値は、前記の如（ＰＴＣ発熱体７の装架面積
以外に、絶縁板の厚み等も起因してくるが、本構成にす
ることにより、適宜設定して、この問題点を解決するこ
とは容易である。In this embodiment, the PTC heating element 7 is made of the above material and is set to have a high calorific value, so that the entire heat dissipation surface can generate sufficient heat. FIG. 4 shows a cross section in the XX direction of FIG. 2. The direction into the figure is the heat radiation direction, and the opposite direction is insulated by the tower kotatsu main body 4. As clearly shown in this figure, the PTC heating element 7 is 30 mm in cross section in the XX direction.
The installation rate is approximately 20% of the total area of the heat dissipation surface. For this reason, the leakage current to the outside is also suppressed to a very low level, and when the current is turned on in the worst-case scenario where water is flooded on the inlet side, the leakage current was measured and was able to be suppressed to 0.2mA, so there is no problem at all when using it. We were able to obtain the leakage current value. This value is determined by the thickness of the insulating plate as well as the installation area of the PTC heating element 7, as described above, but with this configuration, this problem can be solved by setting it appropriately. is easy.
ＰＴＣ発熱体７の装架率を、本実施例では前記の如く２
０％としたが、採暖器具の構成によっては、何％であっ
ても問題ないが、好ましくは５０％以下にするとよい。In this embodiment, the mounting ratio of the PTC heating element 7 is set to 2 as described above.
Although it is set to 0%, it does not matter what percentage it is depending on the configuration of the heating device, but it is preferably 50% or less.
ところで、本実施例でこのＰＴＣ発熱体７は、高発熱量
に設定していると言及したが、本構成によれば、高発熱
量にしても前記電圧集中現象は発生せず、非常に安全で
ある。これは、ＰＴＣ抵抗体８が薄肉板状であり、電極
９，９間の距離は非常に小さく、この間の熱抵抗は非常
に小さいため、温度分布の差異はほとんどないため、こ
の電圧集中現象は起こり得ないからである。By the way, in this embodiment, it has been mentioned that the PTC heating element 7 is set to have a high calorific value, but according to this configuration, the voltage concentration phenomenon does not occur even when the calorific value is high, making it extremely safe. It is. This is because the PTC resistor 8 has a thin plate shape, the distance between the electrodes 9 and 9 is very small, and the thermal resistance between them is very small, so there is almost no difference in temperature distribution, so this voltage concentration phenomenon Because it can't happen.
このため、ＰＴＣ発熱体７の発熱量を、ＰＴＣ発熱体７
の、放熱板５への装架面積が許される前記範囲で設定す
ればよい。Therefore, the calorific value of the PTC heating element 7 is
The mounting area on the heat sink 5 may be set within the above-mentioned range.
また、放熱板５は、熱伝導率が大きければ大きいほど、
ＰＴＣ発熱体７の発熱は熱拡散され、これに伴ない、Ｐ
ＴＣ発熱体７はこのＰＴＣ特性によりこのＰＴＣ発熱体
７の発熱量は増加し、放熱板５の均熱性は向上される。Moreover, the higher the thermal conductivity of the heat sink 5, the more
The heat generated by the PTC heating element 7 is thermally diffused, and as a result, P
Due to the PTC characteristic of the TC heating element 7, the amount of heat generated by the PTC heating element 7 increases, and the heat uniformity of the heat sink 5 is improved.
本実施例では、放熱板５に、鉄板を用いたが、第５図に
示すように、非常に均一な温度分布が得られた。暖感覚
的に言えば、放熱方向で５０％以上、好ましくは７０％
以上のフィン効率が得られる放熱面での採暖では、１０
０％レベルのフィン効率のものとほとんど大差がなく、
非常に良好であった。このように発熱体の装架率を小さ
くしても、ＰＴＣ発熱体のＰＴＣ特性は有効に作用し、
ＰＴＣ特性のない発熱体を用いたものに比べ、速乾性、
薄型化等の長所をもたせることができた。In this example, an iron plate was used as the heat sink 5, and as shown in FIG. 5, a very uniform temperature distribution was obtained. In terms of warmth, 50% or more in the heat radiation direction, preferably 70%
In heating on the heat dissipation surface, which can obtain fin efficiency of 10
There is almost no difference from the 0% level fin efficiency,
It was very good. Even if the mounting ratio of the heating element is reduced in this way, the PTC characteristics of the PTC heating element still work effectively,
Fast drying compared to those using heating elements without PTC characteristics,
This allows it to have advantages such as being thinner.
また、ＰＴＣ発熱体７の装架面積を小さくすることによ
り各種発熱体構成材料も少量で構成され安価に構成でき
るという利点も有している。Further, by reducing the mounting area of the PTC heating element 7, there is an advantage that various materials for forming the heating element can be constructed in small quantities and the construction can be made at low cost.
発明の効果
以上述べてきたように、本発明によれば、以下の効果を
得ることができる。Effects of the Invention As described above, according to the present invention, the following effects can be obtained.
（１）採暖器具本体より外部への漏洩電流を小さく抑え
ることができ、使用者に不快感を与えることがなく安全
である。(1) Leakage current from the heating device itself to the outside can be suppressed to a small level, and the device is safe and does not cause discomfort to the user.
＋２１ＰＴＣ発熱体の、ＰＴＣ特性による採暖器具の速
熱性、薄型化という長所を上記の如く安全に実現できる
。。As described above, the advantages of the +21PTC heating element, such as quick heating and thinning of the heating appliance due to the PTC characteristics, can be safely realized. .
（３）高発熱量のＰＴＣ発熱体を適宜な装架率で放熱体
に装架することにより各種用途に展開でき、採暖器具設
計の自由度が拡大する。(3) By mounting a PTC heating element with a high calorific value on a heat radiator at an appropriate mounting ratio, it can be used for various purposes, and the degree of freedom in designing heating equipment is expanded.
［４１ＰＴＣ発熱体を小型に構成することができ、安価
に構成できる。[41PTC heating element can be configured in a small size and can be configured at low cost.
第１図は本発明の一実施例の採暖器具の発熱体部分の拡
大斜視図、第２図は同採暖器具の斜視図、第３図は同採
暖器具の発熱体部の拡大断面図、第４図は同採暖器具の
放熱体部の断面図、第５図は温度分布図、第６図は従来
の採暖器具の発熱体ユニットを示す斜視図である。
４・・・・・・本体、５，５′・・・・・・放熱板、７
・・・・・・ＰＴＣ発熱体、８・・・・・・ＰＴＣ抵抗
体、９．９・・・・・・電極。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名Ｓ−
−ｍ−放熱板
？−−−−ＰＴＧ抵抗体
第１図 ７ｑ’−電極
４−一−一本体
第２図 タ、ｓ’−放熱板７−−−− Ｐ
ＴＣ発無体
第３図 Ｓ、ｓ’−慈板
背°−−−−電極
第 ４ 図 ｓ、ｓ’−−
−一放然抜７−−−−ＰＴＣｍ
第５図
第６図FIG. 1 is an enlarged perspective view of the heating element of a heating appliance according to an embodiment of the present invention, FIG. 2 is a perspective view of the heating appliance, and FIG. 3 is an enlarged sectional view of the heating element of the heating appliance. FIG. 4 is a cross-sectional view of the heat radiating body part of the heating appliance, FIG. 5 is a temperature distribution diagram, and FIG. 6 is a perspective view showing the heat generating unit of the conventional warming appliance. 4... Main body, 5, 5'... Heat sink, 7
...PTC heating element, 8...PTC resistor, 9.9... Electrode. Name of agent: Patent attorney Toshio Nakao and one other person S-
-m- Heat sink? --- PTG resistor Fig. 1 7q'-electrode 4-1-1 body Fig. 2 Ta, s'-heat sink 7---- P
TC radiation body Fig. 3 S, s'-back of the board °----Electrode Fig. 4 s, s'--
-IchibokuNuki7---PTCm Figure 5 Figure 6
Claims (3)
）をもつ抵抗体の両面に一対の電極を配した発熱体とこ
の発熱体に熱的に結合した放熱体とを備えた採暖器具。(1) Heating system equipped with a heating element consisting of a thin plate-shaped resistor with a positive temperature coefficient of resistance (hereinafter referred to as PTC) with a pair of electrodes arranged on both sides, and a heat radiating element thermally coupled to this heating element. utensils.
％以下とした特許請求の範囲第１項記載の採暖器具。(2) The mounting ratio of heating elements per heat radiating area of the heat radiating element is 50
% or less, according to claim 1.
る特許請求の範囲第１項、または第２項記載の採暖器具
。(3) The heating appliance according to claim 1 or 2, wherein the fin efficiency of the heat radiator in the heat radiation direction is 70% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59266648A JPH0616433B2 (en) | 1984-12-18 | 1984-12-18 | Heat collecting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59266648A JPH0616433B2 (en) | 1984-12-18 | 1984-12-18 | Heat collecting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61143629A true JPS61143629A (en) | 1986-07-01 |
| JPH0616433B2 JPH0616433B2 (en) | 1994-03-02 |
Family
ID=17433748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59266648A Expired - Lifetime JPH0616433B2 (en) | 1984-12-18 | 1984-12-18 | Heat collecting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0616433B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022124763A1 (en) * | 2020-12-11 | 2022-06-16 | 한국철도기술연구원 | Uniform heating system for curing concrete |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136192U (en) * | 1979-03-20 | 1980-09-27 | ||
| JPS55144788U (en) * | 1979-04-05 | 1980-10-17 | ||
| JPS5664694U (en) * | 1979-10-23 | 1981-05-30 |
-
1984
- 1984-12-18 JP JP59266648A patent/JPH0616433B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136192U (en) * | 1979-03-20 | 1980-09-27 | ||
| JPS55144788U (en) * | 1979-04-05 | 1980-10-17 | ||
| JPS5664694U (en) * | 1979-10-23 | 1981-05-30 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022124763A1 (en) * | 2020-12-11 | 2022-06-16 | 한국철도기술연구원 | Uniform heating system for curing concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0616433B2 (en) | 1994-03-02 |
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