JPS5774535A - Heating operation control method for heat pump system heating and cooling device - Google Patents

Heating operation control method for heat pump system heating and cooling device

Info

Publication number
JPS5774535A
JPS5774535A JP55150745A JP15074580A JPS5774535A JP S5774535 A JPS5774535 A JP S5774535A JP 55150745 A JP55150745 A JP 55150745A JP 15074580 A JP15074580 A JP 15074580A JP S5774535 A JPS5774535 A JP S5774535A
Authority
JP
Japan
Prior art keywords
temperature
heating operation
defrosting
compressor
heating
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
JP55150745A
Other languages
Japanese (ja)
Inventor
Masahiro Takebayashi
Hiroo Nakamura
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 JP55150745A priority Critical patent/JPS5774535A/en
Publication of JPS5774535A publication Critical patent/JPS5774535A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE: To enable to shorten a defrosting operating time as compared with a heating operation time, by a method wherein, in a defrosting operation method at a heating operation time, when a coolant evaporating temperature falls to a set value from an atmosphere temperature, a compressor is reduced in a rotative speed.
CONSTITUTION: If frost forms on an outdoor heat exchanger 2 during the heating operation and a detecting temperature Te of a coolant evaporating temperature detector 11 falls down to a control starting coolant temperature T1 decided by an atmosphere temperature detected by a detector 14, a compressor 1 is reduced in a rotative speed so that the temperature Te is brought into a constant state by means of a defrosting controller 15 and a controller 16. This approximately makes a frosting speed uniform without having accelerated, and if a room temperature TR falls to a defrosting starting temperature T3, a 4-way valve is switched to perform a defrosting operation in a reverse cycle. This delays the forming of frost through the reduction of the rotative speed of the compressor 1, which results in enabling to last a heating operation for a long period of time.
COPYRIGHT: (C)1982,JPO&Japio
JP55150745A 1980-10-29 1980-10-29 Heating operation control method for heat pump system heating and cooling device Pending JPS5774535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55150745A JPS5774535A (en) 1980-10-29 1980-10-29 Heating operation control method for heat pump system heating and cooling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55150745A JPS5774535A (en) 1980-10-29 1980-10-29 Heating operation control method for heat pump system heating and cooling device

Publications (1)

Publication Number Publication Date
JPS5774535A true JPS5774535A (en) 1982-05-10

Family

ID=15503483

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55150745A Pending JPS5774535A (en) 1980-10-29 1980-10-29 Heating operation control method for heat pump system heating and cooling device

Country Status (1)

Country Link
JP (1) JPS5774535A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5960155A (en) * 1982-09-29 1984-04-06 株式会社荏原製作所 Heat engine driving heat pump device
JPS59177423A (en) * 1983-03-29 1984-10-08 Masami Fukuoka Driving work of pile
JP2012032091A (en) * 2010-07-30 2012-02-16 Fujitsu General Ltd Heat pump cycle system
CN105509384A (en) * 2015-12-17 2016-04-20 珠海格力电器股份有限公司 Defrosting method of air conditioner multi-split system and air conditioner multi-split system
CN110608510A (en) * 2019-08-21 2019-12-24 珠海格力电器股份有限公司 Air conditioner, outdoor unit, defrosting device, defrosting control method and system
CN112524746A (en) * 2019-09-17 2021-03-19 青岛海尔空调电子有限公司 Control method for outdoor unit balanced frosting in multi-split air conditioning system
CN114353286A (en) * 2021-12-02 2022-04-15 珠海格力电器股份有限公司 Air conditioner defrosting control method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5960155A (en) * 1982-09-29 1984-04-06 株式会社荏原製作所 Heat engine driving heat pump device
JPS59177423A (en) * 1983-03-29 1984-10-08 Masami Fukuoka Driving work of pile
JP2012032091A (en) * 2010-07-30 2012-02-16 Fujitsu General Ltd Heat pump cycle system
CN105509384A (en) * 2015-12-17 2016-04-20 珠海格力电器股份有限公司 Defrosting method of air conditioner multi-split system and air conditioner multi-split system
CN105509384B (en) * 2015-12-17 2017-12-29 珠海格力电器股份有限公司 Defrosting method of air conditioner multi-split system and air conditioner multi-split system
CN110608510A (en) * 2019-08-21 2019-12-24 珠海格力电器股份有限公司 Air conditioner, outdoor unit, defrosting device, defrosting control method and system
CN112524746A (en) * 2019-09-17 2021-03-19 青岛海尔空调电子有限公司 Control method for outdoor unit balanced frosting in multi-split air conditioning system
CN112524746B (en) * 2019-09-17 2021-11-26 青岛海尔空调电子有限公司 Control method for outdoor unit balanced frosting in multi-split air conditioning system
CN114353286A (en) * 2021-12-02 2022-04-15 珠海格力电器股份有限公司 Air conditioner defrosting control method

Similar Documents

Publication Publication Date Title
SE8005118L (en) temperature control
JPS5774535A (en) Heating operation control method for heat pump system heating and cooling device
JPS5340450A (en) Defrost system of air cool heat pump type air conditioner
JPS5424344A (en) Defrosting control device
JPS5618248A (en) Defrosting control apparatus of air conditioner
JPS6475842A (en) Defrosting method for air conditioner
JPS57148129A (en) Controlling system of heat pump type air conditioner
JPS57164245A (en) Air conditioner
JPS56117025A (en) Heating method in which electric carpet and air conditioner are employed and device for use with the same
JPS6457064A (en) Air conditioner
JPS5716750A (en) Controlling circuit for defrosting device
JPS54137759A (en) Multi-stage compression refrigerating machine
JPS5445863A (en) Method of operating open display case at defrosting time
JPS56113937A (en) Detecting device for re-evaporation in air cooling apparatus
JPS5618240A (en) Defrosting control apparatus
JPS5388663A (en) Temperature controller for cold trap
JPS5620943A (en) Air conditioner
JPS5630549A (en) Air conditioner
JPS5787550A (en) Defrosting controller
JPS56113939A (en) Reevaporation preventing device for room cooling apparatus
JPS5773336A (en) Air conditioner controlling method
JPS52148852A (en) Control method for heat pump type air conditioner
JPS55150447A (en) Defrosting controller for heater
JPS5491953A (en) Refrigerator capable of heating, cooling, and dehydration
JPS57193787A (en) Operation control process for variable capacity compressor in a room cooler