JPS5871673U - Frost detection device for heat exchanger - Google Patents
Frost detection device for heat exchangerInfo
- Publication number
- JPS5871673U JPS5871673U JP16814581U JP16814581U JPS5871673U JP S5871673 U JPS5871673 U JP S5871673U JP 16814581 U JP16814581 U JP 16814581U JP 16814581 U JP16814581 U JP 16814581U JP S5871673 U JPS5871673 U JP S5871673U
- Authority
- JP
- Japan
- Prior art keywords
- frost
- light source
- detection device
- heat exchanger
- fin
- 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
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
図面は本考案の実施態様を例示し、第１図は全体構成ブ
ロック図、第２図は具体例を示す電気回路図、第３図は
受光素子の感度特性を示す図、第４図は光源および受光
素子配置の変形例を示す図、第５図は回能の変形例を示
す図である。
１・・・・・・フ不ン、１ａ・・・・・・開口部、３・
・・・・・光源、４・・・・・・受光素子、６・・・・
・・比較回路、ｆ、ｆ’、ｆ″・・・・・・霜、Ｓ・・
・・・・着霜信号、Ｉｓ・・・・・・基準電圧に相当す
る受光感度。The drawings illustrate the embodiments of the present invention; FIG. 1 is a block diagram of the overall configuration, FIG. 2 is an electric circuit diagram showing a specific example, FIG. 3 is a diagram showing the sensitivity characteristics of the light receiving element, and FIG. 4 is a light source. FIG. 5 is a diagram showing a modified example of the light receiving element arrangement, and FIG. 5 is a diagram showing a modified example of the function. 1...Fun, 1a...Opening, 3.
...Light source, 4... Light receiving element, 6...
・Comparison circuit, f, f', f''...frost, S...
...Frost formation signal, Is... Light receiving sensitivity corresponding to the reference voltage.
Claims (4)
霜した霜に向けて投光する光源３と、この霜に対しほぼ
最高感度距離隔てて配置され霜からの反射光を受光する
受光素子４と、該受光素子４の出力電圧を前記最高感度
にほぼ相当する基準電圧と比較し基準電圧以上のとき着
霜信号Ｓを出力する比較回路６とを備えたことを特徴と
する熱交換器用着霜検出装置。(1) A light source 3 that emits light toward the frost that has grown and formed on the surface of the fin 1 of the finned heat exchanger, and a light source 3 that is placed at approximately the maximum sensitivity distance from the frost and receives the reflected light from the frost. A thermal device characterized by comprising a light receiving element 4 and a comparison circuit 6 which compares the output voltage of the light receiving element 4 with a reference voltage approximately corresponding to the maximum sensitivity and outputs a frosting signal S when the voltage is equal to or higher than the reference voltage. Frost detection device for exchangers.
ｆに向けて投光する実用新案登録請求の範囲第（１）項
記載の熱交換器用着霜検出装置。(2) The light source 3 is a frost formation detection device for a heat exchanger according to claim 1, in which the light source 3 emits light toward the frost f that protrudes from the edge of the fin 1 and forms frost.
るように着霜した霜ｆ′に向けて投光する実用新案登録
請求の範囲第（１）項記載の熱交換器用着霜検出装置。(3) The light source 3 emits light toward the frost f' that has formed so as to close the opening 1a provided in the fin 1. Detection device.
ように着霜した霜ｆ″に向けて投光する実用新案登録請
求の範囲第（１）項記載の熱交換器用着霜検出装置。(4) The light source 3 emits light toward the frost f'' that has formed so as to close the gap between the fins 1 and 1. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16814581U JPS5871673U (en) | 1981-11-10 | 1981-11-10 | Frost detection device for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16814581U JPS5871673U (en) | 1981-11-10 | 1981-11-10 | Frost detection device for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5871673U true JPS5871673U (en) | 1983-05-14 |
Family
ID=29960201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16814581U Pending JPS5871673U (en) | 1981-11-10 | 1981-11-10 | Frost detection device for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5871673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008232605A (en) * | 2007-02-19 | 2008-10-02 | Mitsubishi Electric Corp | Cooling device and refrigerator equipped with the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5393453A (en) * | 1977-01-28 | 1978-08-16 | Hitachi Ltd | Defrost device of heat exchanger |
-
1981
- 1981-11-10 JP JP16814581U patent/JPS5871673U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5393453A (en) * | 1977-01-28 | 1978-08-16 | Hitachi Ltd | Defrost device of heat exchanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008232605A (en) * | 2007-02-19 | 2008-10-02 | Mitsubishi Electric Corp | Cooling device and refrigerator equipped with the same |
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