JPS5735237A - Defrosting system - Google Patents

Defrosting system

Info

Publication number
JPS5735237A
JPS5735237A JP11136580A JP11136580A JPS5735237A JP S5735237 A JPS5735237 A JP S5735237A JP 11136580 A JP11136580 A JP 11136580A JP 11136580 A JP11136580 A JP 11136580A JP S5735237 A JPS5735237 A JP S5735237A
Authority
JP
Japan
Prior art keywords
resistance
defrosting operation
circuit
defrosting
change
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
Application number
JP11136580A
Other languages
Japanese (ja)
Other versions
JPS644096B2 (en
Inventor
Yasuhiro Nagata
Hisaharu Kitahata
Kenichi Taguchi
Kenzo Sakamori
Hisashi Hasegawa
Kunihiro Nagura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP11136580A priority Critical patent/JPS5735237A/en
Publication of JPS5735237A publication Critical patent/JPS5735237A/en
Publication of JPS644096B2 publication Critical patent/JPS644096B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To improve reliability of the defrosting operation of a heat pump type air conditioner, by using as a frost detecting element a humidity sensing element that causes negative change of resistance to the change of relative humidity or a dew sensor that causes change in resistance in response to the dewing.
CONSTITUTION: When dew deposits on an element 1 during operation of an air conditioner, the value of resistance of a dew sensor is increased, and output voltage V of a resistance-voltage converting circuit 2 becomes higher than a first reference value V1. At the same time, a defrosting operation starting signal is produced from a first comparison circuit 13 and maintained in a holding circuit 7. Subsequently, when defrosting of the element 1 is completed by defrosting operation, the value of resistance of the element 1 is lowered and output voltage V of the resistance-voltage converting circuit 2 becomes lower than a second reference value V2. Resultantly, a defrosting operation stopping signal is produced from another comparison circuit 5 and the holding circuit 7 is reset. With such an arrangement, it is enabled to enhance the reliability of defrosting operation.
COPYRIGHT: (C)1982,JPO&Japio
JP11136580A 1980-08-12 1980-08-12 Defrosting system Granted JPS5735237A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11136580A JPS5735237A (en) 1980-08-12 1980-08-12 Defrosting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11136580A JPS5735237A (en) 1980-08-12 1980-08-12 Defrosting system

Publications (2)

Publication Number Publication Date
JPS5735237A true JPS5735237A (en) 1982-02-25
JPS644096B2 JPS644096B2 (en) 1989-01-24

Family

ID=14559337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11136580A Granted JPS5735237A (en) 1980-08-12 1980-08-12 Defrosting system

Country Status (1)

Country Link
JP (1) JPS5735237A (en)

Also Published As

Publication number Publication date
JPS644096B2 (en) 1989-01-24

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