JPS58142677U - frost detection device - Google Patents
frost detection deviceInfo
- Publication number
- JPS58142677U JPS58142677U JP4111582U JP4111582U JPS58142677U JP S58142677 U JPS58142677 U JP S58142677U JP 4111582 U JP4111582 U JP 4111582U JP 4111582 U JP4111582 U JP 4111582U JP S58142677 U JPS58142677 U JP S58142677U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- piezoelectric element
- detection device
- vibration
- 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
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
第１図は従来の霜検知装置の断面図、第２図は本考案の
霜検知装置を有する蒸発器の平面図、第３図は前記霜検
知装置の断面図、第４図は本霜検知装置の概略電気回路
図である。
７・・・・・・蒸発器、１２・・・・・・霜検知素子、
１３・・・・・・ ゛発振部、１４・・・・・・受
振部、１６．１６’・・・・・・圧電素子、１７．１７
’・・・・・・振動面、２２・・・・・・間欠通電回路
、２３・・・・・・発振回路、２４・・・・・・受振回
路、２６・・・・・・駆動回路。 。Fig. 1 is a sectional view of a conventional frost detection device, Fig. 2 is a plan view of an evaporator having the frost detection device of the present invention, Fig. 3 is a sectional view of the frost detection device, and Fig. 4 is the present frost detection device. FIG. 2 is a schematic electrical circuit diagram of the device. 7... Evaporator, 12... Frost detection element,
13... ゛Oscillating section, 14... Receiving section, 16.16'... Piezoelectric element, 17.17
'... Vibration surface, 22... Intermittent energization circuit, 23... Oscillation circuit, 24... Vibration receiving circuit, 26... Drive circuit . .
Claims (1)
及び受振部を所定間隔を存して互に相対向して配置した
霜検知器を蒸発器一部に設置し、前記発振部の圧電素子
を一定の発振レベルで発振させる発振回路と、前記受振
部の圧電素子に機械的振動が加えられた時に圧電素子が
発する電気信号を検知する受振回路と、前記発振回路及
び受振回路に間欠的に通電する間欠通電回路と、前記受
振回路の出力により除霜制御を行う駆動回路より構成さ
れる霜検知装置。A frost detector is installed in a part of the evaporator, in which an oscillating part and a receiving part each having a vibrating surface in which a piezoelectric element is installed in a casing are arranged facing each other at a predetermined interval. an oscillation circuit that oscillates at a constant oscillation level; a receiver circuit that detects an electrical signal generated by the piezoelectric element when mechanical vibration is applied to the piezoelectric element of the vibration receiver; A frost detection device comprising an intermittent energization circuit that energizes, and a drive circuit that performs defrosting control based on the output of the vibration receiving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4111582U JPS58142677U (en) | 1982-03-23 | 1982-03-23 | frost detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4111582U JPS58142677U (en) | 1982-03-23 | 1982-03-23 | frost detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58142677U true JPS58142677U (en) | 1983-09-26 |
Family
ID=30052305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4111582U Pending JPS58142677U (en) | 1982-03-23 | 1982-03-23 | frost detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58142677U (en) |
-
1982
- 1982-03-23 JP JP4111582U patent/JPS58142677U/en active Pending
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