GB2603349A9 - Air conditioning device - Google Patents

Air conditioning device Download PDF

Info

Publication number
GB2603349A9
GB2603349A9 GB2204043.0A GB202204043A GB2603349A9 GB 2603349 A9 GB2603349 A9 GB 2603349A9 GB 202204043 A GB202204043 A GB 202204043A GB 2603349 A9 GB2603349 A9 GB 2603349A9
Authority
GB
United Kingdom
Prior art keywords
heat exchanger
flow passage
refrigerant
compressor
high pressure
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
GB2204043.0A
Other versions
GB202204043D0 (en
GB2603349A (en
GB2603349B (en
Inventor
Shinoda Ippei
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 Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB202204043D0 publication Critical patent/GB202204043D0/en
Publication of GB2603349A publication Critical patent/GB2603349A/en
Publication of GB2603349A9 publication Critical patent/GB2603349A9/en
Application granted granted Critical
Publication of GB2603349B publication Critical patent/GB2603349B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/31—Low ambient temperatures
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2507—Flow-diverting valves
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F25B2700/193—Pressures of the compressor
    • F25B2700/1931—Discharge pressures
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2106—Temperatures of fresh outdoor air
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers

Abstract

This air conditioning device comprises: a compressor that compresses a refrigerant; a high pressure-side piping in which the refrigerant discharged from the compressor flows; a first heat exchanger that is connected to the high pressure-side piping, and that functions as a condenser; a second heat exchanger that is connected to the high pressure-side piping and to the first heat exchanger and is connected in parallel to the first heat exchanger, and that functions as a condenser; a flow passage switching device that is connected to the high pressure-side piping and to the second heat exchanger, and that switches between a first flow passage by which the refrigerant discharged from the compressor is supplied to the first heat exchanger via the high pressure-side piping but is not supplied to the second heat exchanger, and a second flow passage by which the refrigerant discharged from the compressor is supplied to the first heat exchanger and the second heat exchanger via the high pressure-side piping; a flow rate adjustment valve that is connected to a refrigerant outlet of the second heat exchanger; a refrigerant circuit piping that is connected to a refrigerant outlet of the first heat exchanger and to the flow rate adjustment valve; an external air temperature sensor that measures the temperature of external air; and a control device that controls the flow passage switching device and the flow rate adjustment valve. The refrigerant circuit piping connects between the first and second heat exchangers and an expansion valve of a refrigerant circuit, in which the refrigerant circulates through the compressor, the flow passage switching device, the first heat exchanger, the second heat exchanger, the flow rate adjustment valve, the expansion valve, and an evaporator of an indoor unit. The control device determines whether a prescribed condition has been met in a state in which the flow passage switching device has switched to the first flow passage, the condition being such that the temperature of external air measured by the external air temperature sensor is equal to or less than a first temperature which is below freezing and a degree of discharge superheat of the compressor is at least a first degree of discharge superheat; and if determining that the prescribed condition has been met, the control device switches the flow passage switching device to the second flow passage and opens the flow rate adjustment valve so that the refrigerant remaining in the second heat exchanger is made to flow to the refrigerant circuit piping.
GB2204043.0A 2019-12-19 2019-12-19 Air-conditioning apparatus Active GB2603349B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/049722 WO2021124499A1 (en) 2019-12-19 2019-12-19 Air conditioning device

Publications (4)

Publication Number Publication Date
GB202204043D0 GB202204043D0 (en) 2022-05-04
GB2603349A GB2603349A (en) 2022-08-03
GB2603349A9 true GB2603349A9 (en) 2023-08-09
GB2603349B GB2603349B (en) 2024-02-28

Family

ID=76478596

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2204043.0A Active GB2603349B (en) 2019-12-19 2019-12-19 Air-conditioning apparatus

Country Status (3)

Country Link
JP (1) JP7308978B2 (en)
GB (1) GB2603349B (en)
WO (1) WO2021124499A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114353281B (en) * 2021-12-28 2023-08-15 青岛海尔空调电子有限公司 Electronic expansion valve control method, electronic expansion valve control device, computer equipment and storage medium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0755280A (en) * 1993-08-20 1995-03-03 Sanyo Electric Co Ltd Air conditioning system
JP2000193327A (en) * 1998-12-25 2000-07-14 Mitsubishi Electric Corp Air conditioner equipment and control method thereof
JP2014214951A (en) * 2013-04-25 2014-11-17 株式会社富士通ゼネラル Air conditioner
JP2018013287A (en) * 2016-07-20 2018-01-25 三菱重工サーマルシステムズ株式会社 Air conditioner and control method of air conditioner

Also Published As

Publication number Publication date
JP7308978B2 (en) 2023-07-14
GB202204043D0 (en) 2022-05-04
JPWO2021124499A1 (en) 2021-06-24
WO2021124499A1 (en) 2021-06-24
GB2603349A (en) 2022-08-03
GB2603349B (en) 2024-02-28

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