JPS60251376A - Frost detector - Google Patents
Frost detectorInfo
- Publication number
- JPS60251376A JPS60251376A JP10785484A JP10785484A JPS60251376A JP S60251376 A JPS60251376 A JP S60251376A JP 10785484 A JP10785484 A JP 10785484A JP 10785484 A JP10785484 A JP 10785484A JP S60251376 A JPS60251376 A JP S60251376A
- Authority
- JP
- Japan
- Prior art keywords
- mounting plate
- case
- light
- frost
- frost detection
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/11—Sensor to detect if defrost is necessary
- F25B2700/111—Sensor to detect if defrost is necessary using an emitter and receiver, e.g. sensing by emitting light or other radiation and receiving reflection by a sensor
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】
産業上の利用分野
本発明は冷蔵庫等の蒸発器に付着する霜を光学的に検出
する霜検出装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a frost detection device for optically detecting frost adhering to an evaporator of a refrigerator or the like.
従来例の構成とその問題点
一般に冷蔵庫等冷凍機の蒸発器に付着した霜の除去は、
圧縮機運転時間積算により一定時間毎に除霜したり、あ
るいは冷蔵室及び冷凍室扉開閉回数を計数して一定回数
に達すると除霜を行うものであった。ところが冷蔵庫等
の蒸発器への着霜は冷蔵庫本体外気温や湿度、冷蔵室及
び冷凍室扉開閉頻度、又冷蔵庫内に貯蔵される内容物に
大きく左右され、上述の如き方法では除霜の不必要時に
除霜を行ったシ、蒸発器に多量に着霜し冷凍能力が低下
しているにもかかわらず除霜が行われない等の欠点があ
った。Conventional structure and its problems In general, removing frost attached to the evaporator of a refrigerator or other chiller is
Defrosting is performed at fixed intervals by integrating the operating time of the compressor, or defrosting is performed when a certain number of times is reached by counting the number of openings and closings of the refrigerator and freezer compartment doors. However, the formation of frost on the evaporator of a refrigerator, etc. is greatly affected by the outside temperature and humidity of the refrigerator, the frequency of opening and closing of the refrigerator and freezer compartment doors, and the contents stored in the refrigerator. There were disadvantages such as defrosting was performed when necessary, and defrosting was not performed even though a large amount of frost formed on the evaporator and the refrigeration capacity was reduced.
そこで、この様な欠点を解消するために、着霜を直接検
知する手段として発光ダイオード等の発光素子とフォト
トランジスタ等の受光素子を用いた霜検出装置が種々提
案されているが、いずれも発光素子、受光素子が露出し
て形成されているため、外部の雰囲気、特に水分と冷熱
サイクルの影響で特性が劣化するという問題があった。Therefore, in order to overcome these drawbacks, various frost detection devices have been proposed that use light-emitting elements such as light-emitting diodes and light-receiving elements such as phototransistors as a means of directly detecting frost formation. Since the elements and light-receiving elements are formed exposed, there is a problem in that the characteristics deteriorate due to the influence of the external atmosphere, especially moisture and cooling/heating cycles.
発明の目的
本発明は受光素子、受光素子を完全密閉することにより
上記問題点を解消することを目的とする。OBJECTS OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems by completely sealing a light receiving element.
発明の構成 この目的を達成するために本発明は、発光素子。Composition of the invention To achieve this objective, the present invention provides a light emitting device.
受光素子を固定した取付板をケースに収納し、前記取付
板とケースを封止樹脂で密閉することによリ、前記画素
子を外部雰囲気から完全に遮断するものである。The mounting plate to which the light-receiving element is fixed is housed in a case, and the mounting plate and the case are sealed with a sealing resin, thereby completely shielding the pixel element from the external atmosphere.
実施例の説明 以下本発明の一実施例を添付図面に従い説明する。Description of examples An embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図および第２図において、１は冷蔵庫等冷凍機の蒸
発器であり、２は冷媒の通るパイプ、３はこのパイプ２
に直交して配設されたフィンプレート、４はフィンプレ
ート３に設けた霜検知孔、５は前記霜検知孔４を介して
お互いに相対向して設けられた霜検出装置である。前記
１Ｎ検出装置５はコ字状の透明ケース６を備えている。In Figures 1 and 2, 1 is an evaporator of a refrigerator or other refrigerator, 2 is a pipe through which refrigerant passes, and 3 is this pipe 2.
4 is a frost detection hole provided in the fin plate 3, and 5 is a frost detection device provided facing each other through the frost detection hole 4. The 1N detection device 5 includes a U-shaped transparent case 6.
そして、ケース６に、発光素子としての発光ダイオード
Ｙ、受光素子としてのフォトトランジスタ８、これら発
光ダイオード７、フォトトランジスタ８を固定する取付
板９を挿入している。捷だ、取付板９をケース６内に水
密状に封止する封止樹脂１０が充填されている。A light emitting diode Y as a light emitting element, a phototransistor 8 as a light receiving element, and a mounting plate 9 for fixing the light emitting diode 7 and the phototransistor 8 are inserted into the case 6. However, a sealing resin 10 is filled to seal the mounting plate 9 into the case 6 in a watertight manner.
前記ケース６は前記画素子７，８を収納する一対の収納
部６ａと前記画素子を固定した取付板９を配置する固定
部６ｂより成シ、内部は空胴である。The case 6 is made up of a pair of storage parts 6a for storing the pixel elements 7 and 8, and a fixing part 6b for arranging a mounting plate 9 to which the pixel elements are fixed, and is hollow inside.
捷た、ケースは透明材料（ポリカーボネイト等）より成
るので、開口無しで光の授受が可能である。Since the folded case is made of a transparent material (polycarbonate, etc.), light can be transmitted and received without an opening.
すなわち、発光素子、受光素子を固定した取付板を内部
が空胴のケース６に収納し、前記取付板９を封止樹脂１
０で密閉するものである。霜検出装置の使用周囲条件は
、除霜時には高温多湿であゃ冷却運転時には極めて低温
となる過酷な条件であるが、前述の如くケース６の空胴
が封止樹脂１Ｑと取付板９によシ完全密閉構造となって
いるので水分の影響は受けず耐冷熱サイクル性も向上す
る。That is, a mounting plate to which a light emitting element and a light receiving element are fixed is housed in a hollow case 6, and the mounting plate 9 is sealed with a sealing resin 1.
It is sealed at zero. The ambient conditions in which the frost detection device is used are harsh, with high temperature and humidity during defrosting and extremely low temperatures during cooling operation, but as described above, the cavity of case 6 is Since it has a completely sealed structure, it is not affected by moisture and has improved cold and heat cycle resistance.
発明の効果
以上の説明からも明らかなように、本発明の霜検出装置
は蒸発器に設けた霜検知孔に相対向して発光ダイオード
等の発光素子とホトトランジスタ等の受光素子を配置し
、前記画素子収納する一対の収納部と前記画素子を固定
した取付板を配置する固定部より成るケースとで構成し
、前記取付板を封止樹脂で密封したものであるから、耐
水耐湿性、耐冷熱サイクル性に優れ、安定で正確な動作
が得られるものである。Effects of the Invention As is clear from the above explanation, the frost detection device of the present invention has a light emitting element such as a light emitting diode and a light receiving element such as a phototransistor arranged opposite to the frost detection hole provided in the evaporator. The case is composed of a pair of storage parts for storing the pixel element and a fixing part for arranging a mounting plate to which the pixel element is fixed, and the mounting plate is sealed with a sealing resin, so that it is water resistant and moisture resistant. It has excellent cold and heat cycle resistance and provides stable and accurate operation.
第１図は本発明一実施例の霜検出装置を有する蒸発器一
部の断面図、第２図は同装置の斜視図である。
４・・−・霜検知孔、７・・・・発光ダイオード発光素
子、８・・・・フォトトランジスタ受光素子、６−・・
・・・ケース、６ａ・・・・・収納部、６ｂ−−・・固
定部、９・・・・取付板。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図FIG. 1 is a sectional view of a part of an evaporator having a frost detection device according to an embodiment of the present invention, and FIG. 2 is a perspective view of the same device. 4... Frost detection hole, 7... Light emitting diode light emitting element, 8... Phototransistor light receiving element, 6...
...Case, 6a...Storage section, 6b...Fixing section, 9...Mounting plate. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure
Claims (1)
子を配置し、前記画素子を収納する一対の収納部と前記
画素子を固定した取付板を配置する固定部とを備えたケ
ースと、前記取付板とケースを水密状にシールする封止
樹脂とよりなる霜検出装置。A light-emitting element and a light-receiving element are disposed opposite to each other in a frost detection hole provided in the evaporator, and the apparatus includes a pair of storage parts for storing the pixel element and a fixing part for arranging a mounting plate to which the pixel element is fixed. A frost detection device comprising a case and a sealing resin that seals the mounting plate and the case in a watertight manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10785484A JPS60251376A (en) | 1984-05-28 | 1984-05-28 | Frost detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10785484A JPS60251376A (en) | 1984-05-28 | 1984-05-28 | Frost detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60251376A true JPS60251376A (en) | 1985-12-12 |
Family
ID=14469743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10785484A Pending JPS60251376A (en) | 1984-05-28 | 1984-05-28 | Frost detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60251376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007090699A2 (en) * | 2006-02-07 | 2007-08-16 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerator comprising an ice sensor |
-
1984
- 1984-05-28 JP JP10785484A patent/JPS60251376A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007090699A2 (en) * | 2006-02-07 | 2007-08-16 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerator comprising an ice sensor |
| WO2007090699A3 (en) * | 2006-02-07 | 2007-09-27 | Bsh Bosch Siemens Hausgeraete | Refrigerator comprising an ice sensor |
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