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JPS57164245A - Air conditioner - Google Patents

Air conditioner

Info

Publication number
JPS57164245A
JPS57164245A JP56048086A JP4808681A JPS57164245A JP S57164245 A JPS57164245 A JP S57164245A JP 56048086 A JP56048086 A JP 56048086A JP 4808681 A JP4808681 A JP 4808681A JP S57164245 A JPS57164245 A JP S57164245A
Authority
JP
Japan
Prior art keywords
coolant
heat exchanger
temperature
difference
air conditioner
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
JP56048086A
Other languages
Japanese (ja)
Inventor
Yukio Kobayashi
Masaru Matsumoto
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP56048086A priority Critical patent/JPS57164245A/en
Publication of JPS57164245A publication Critical patent/JPS57164245A/en
Pending legal-status Critical Current

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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/02—Detecting the presence of frost or condensate

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

PURPOSE:To perform energy-saving room heating in a heat pump type air conditioner by comparing the difference between the atmospheric temperature and the coolant evaporation temperature of an outdoor heat exchanger with the prescribed value and producing a defrosting cycle command in accordance with the compared result, thereby effectively detecting the frost. CONSTITUTION:A heat pump type air conditioner feeds high temperature coolant by a compressor (not shown) through a pipe to an indoor side heat exchanger 5 at the heating time, heats the indoor air, and condenses the coolant. Then, the coolant is reduced under pressure bya capillary tube 7, is evaporated by an outdoor heat exchanger 8, and is returned to a compressor. In this case, the outputs of a coolant temperature sensor 18 attached to the heat exchanger 8 and an atmospheric temperature sensor 19 are inputted to a detection controller 23, which obtains the temperature difference between after heating operation starts and after the prescribed time. Then, the temperature difference and the temperature difference betwee the prescribed times when a frost is expected are varied, and a defrost cycle command is produced when the difference exceeds the set variation amount.
JP56048086A 1981-03-31 1981-03-31 Air conditioner Pending JPS57164245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56048086A JPS57164245A (en) 1981-03-31 1981-03-31 Air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56048086A JPS57164245A (en) 1981-03-31 1981-03-31 Air conditioner

Publications (1)

Publication Number Publication Date
JPS57164245A true JPS57164245A (en) 1982-10-08

Family

ID=12793505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56048086A Pending JPS57164245A (en) 1981-03-31 1981-03-31 Air conditioner

Country Status (1)

Country Link
JP (1) JPS57164245A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100361907B1 (en) * 1996-08-08 2002-11-22 가부시끼가이샤 히다치 세이사꾸쇼 Air conditioner
JP2008304137A (en) * 2007-06-08 2008-12-18 Mitsubishi Electric Corp Refrigerating unit
US7856836B2 (en) 2005-07-26 2010-12-28 Mitsubishi Electric Corporation Refrigerating air conditioning system
EP2366968A3 (en) * 2010-03-17 2012-07-18 Wolf GmbH Method and device for thawing an evaporator of a heat pump device
US20170361679A1 (en) * 2014-12-24 2017-12-21 Calsonic Kansei Corporation Vehicle air-conditioning device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100361907B1 (en) * 1996-08-08 2002-11-22 가부시끼가이샤 히다치 세이사꾸쇼 Air conditioner
US7856836B2 (en) 2005-07-26 2010-12-28 Mitsubishi Electric Corporation Refrigerating air conditioning system
JP2008304137A (en) * 2007-06-08 2008-12-18 Mitsubishi Electric Corp Refrigerating unit
EP2366968A3 (en) * 2010-03-17 2012-07-18 Wolf GmbH Method and device for thawing an evaporator of a heat pump device
US20170361679A1 (en) * 2014-12-24 2017-12-21 Calsonic Kansei Corporation Vehicle air-conditioning device
US10994586B2 (en) * 2014-12-24 2021-05-04 Marelli Cabin Comfort Japan Corporation Vehicle air-conditioning device

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