JPS5525760A - De-frosting controller - Google Patents

De-frosting controller

Info

Publication number
JPS5525760A
JPS5525760A JP9901978A JP9901978A JPS5525760A JP S5525760 A JPS5525760 A JP S5525760A JP 9901978 A JP9901978 A JP 9901978A JP 9901978 A JP9901978 A JP 9901978A JP S5525760 A JPS5525760 A JP S5525760A
Authority
JP
Japan
Prior art keywords
temperature
frosting
air
heat exchanger
outdoor
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
Application number
JP9901978A
Other languages
Japanese (ja)
Inventor
Yasuyoshi Namita
Kensaku Kokuni
Takao Chiaki
Hiroshi Yasuda
Fumio Harada
Hirokiyo Terada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9901978A priority Critical patent/JPS5525760A/en
Publication of JPS5525760A publication Critical patent/JPS5525760A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a wasteful de-frosting and to perform a comfortable air-conditioning, by de-frosting as a result of computing an amount of frost fallen at an outdoor exchanger from a temperature of the air and the results obtained as a result of computing a wet bulb temperature from an evaporating temperature of the outdoor heat exchanger.
CONSTITUTION: A coolant temperature of an outdoor heat exchanger detected by a temperature sensor 12 and a temperature of the air detected by a temperature sensor 13 are converted to their respective analogue signals by means of a multiprocessor 14, and a digital amount, into which the temperature are converted, is stored at a memory 17. In the memory 17, a wet bulb temperature is computed from a coolant temperature to find a relative humidity. Furthermore, a computation control unit 16 computes the values of the outdoor air temperature and relative humidity and which of frosting scopes, ABC, A'B'C', and A"B"C" they will belong to after a time has elapsed, and estimates an amount of frost fallen at the heat exchanger, and sends signals to an output device 19 after determining when the de-frosting device should start to function.
COPYRIGHT: (C)1980,JPO&Japio
JP9901978A 1978-08-16 1978-08-16 De-frosting controller Pending JPS5525760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9901978A JPS5525760A (en) 1978-08-16 1978-08-16 De-frosting controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9901978A JPS5525760A (en) 1978-08-16 1978-08-16 De-frosting controller

Publications (1)

Publication Number Publication Date
JPS5525760A true JPS5525760A (en) 1980-02-23

Family

ID=14235466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9901978A Pending JPS5525760A (en) 1978-08-16 1978-08-16 De-frosting controller

Country Status (1)

Country Link
JP (1) JPS5525760A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105157323A (en) * 2015-09-17 2015-12-16 南京创维电器研究院有限公司 Air-cooled refrigerator defrosting method and defrosting system
DE112017001596T5 (en) 2016-03-28 2018-12-13 Denso Corporation Control device for internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105157323A (en) * 2015-09-17 2015-12-16 南京创维电器研究院有限公司 Air-cooled refrigerator defrosting method and defrosting system
DE112017001596T5 (en) 2016-03-28 2018-12-13 Denso Corporation Control device for internal combustion engine
US10519894B2 (en) 2016-03-28 2019-12-31 Denso Corporation Control device for internal combustion engine

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