WO2013172196A1 - Appareil de conditionnement d'air - Google Patents

Appareil de conditionnement d'air Download PDF

Info

Publication number
WO2013172196A1
WO2013172196A1 PCT/JP2013/062574 JP2013062574W WO2013172196A1 WO 2013172196 A1 WO2013172196 A1 WO 2013172196A1 JP 2013062574 W JP2013062574 W JP 2013062574W WO 2013172196 A1 WO2013172196 A1 WO 2013172196A1
Authority
WO
WIPO (PCT)
Prior art keywords
outdoor
high pressure
rotational speed
fan
control
Prior art date
Application number
PCT/JP2013/062574
Other languages
English (en)
Japanese (ja)
Inventor
匡史 齋藤
順一 下田
Original Assignee
ダイキン工業株式会社
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 ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Publication of WO2013172196A1 publication Critical patent/WO2013172196A1/fr

Links

Images

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
    • F25B49/027—Condenser control arrangements
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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
    • F25B2600/11—Fan speed control
    • F25B2600/111—Fan speed control of condenser fans
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the control for maintaining the condensing pressure in the low outside air condition described in Patent Document 1 is a technique common to various refrigeration apparatuses.
  • the air conditioner that performs high-pressure control by changing the rotation speed of the outdoor fan during cooling operation there may be only one outdoor fan, and many outdoor fans may be provided. difficult. For this reason, it is desirable to be able to maintain a high pressure under low outdoor air conditions without adopting a configuration in which a plurality of outdoor fans are provided.
  • An object of the present invention is to enable a high pressure to be maintained even in a low outside air condition in an air conditioner that performs high pressure control by changing the rotation speed of an outdoor fan during cooling operation.
  • the fan duty control sets the pseudo rotational speed which is apparently smaller than the minimum rotational speed while operating the outdoor fan at the minimum rotational speed or higher. Even under conditions, a high pressure can be maintained.
  • the fan duty control by changing a time ratio between the operation time and the stop time at a predetermined number of revolutions equal to or higher than the minimum number of revolutions.
  • a plurality of pseudo rotational speeds which are apparently smaller than the minimum rotational speed are set.
  • the pseudo rotation speed close to the minimum rotation speed can be obtained by increasing the operation time with respect to the stop time for the time ratio between the operation time and the stop time at a predetermined rotation speed equal to or higher than the minimum rotation speed.
  • a plurality of pseudo rotational speeds smaller than the minimum rotational speed are set by the fan duty control.
  • FIG. 1 is a schematic configuration diagram of an air conditioner 1 according to an embodiment of the present invention.
  • the air conditioner 1 is a device capable of cooling and heating a room such as a building by performing a vapor compression refrigeration cycle.
  • the air conditioner 1 is mainly configured by connecting an outdoor unit 2 and an indoor unit 4.
  • the outdoor unit 2 and the indoor unit 4 are connected via a liquid refrigerant communication tube 5 and a gas refrigerant communication tube 6. That is, the vapor compression refrigerant circuit 10 of the air conditioner 1 is configured by connecting the outdoor unit 2 and the indoor unit 4 via the refrigerant communication pipes 5 and 6.
  • the indoor unit 4 has an indoor fan 42 as a fan that supplies indoor air as a heating source or cooling source of the refrigerant flowing through the indoor heat exchanger 41 to the indoor heat exchanger 41.
  • the indoor fan 42 a centrifugal fan or a multiblade fan driven by an indoor fan motor 43 is used.
  • the indoor heat exchanger 41 is provided with an indoor heat exchange temperature sensor 44 that detects the temperature Trr of the refrigerant in the indoor heat exchanger 41.
  • the indoor unit 4 is provided with an indoor air temperature sensor 45 that detects the temperature Tra of the indoor air sucked into the indoor unit 4.
  • the indoor unit 4 has an indoor side control unit 46 that controls the operation of each part constituting the indoor unit 4.
  • the indoor side control unit 46 includes a microcomputer, a memory, and the like provided for controlling the indoor unit 4, and exchanges control signals and the like with a remote controller (not shown). Control signals and the like can be exchanged with the outdoor unit 2 via the transmission line 7.
  • the first gas refrigerant pipe 33 is a refrigerant pipe that connects the third port 22 c of the four-way switching valve 22 and the gas side of the outdoor heat exchanger 23.
  • the second gas refrigerant pipe 33 is a refrigerant pipe connecting the fourth port 22d of the four-way switching valve 22 and the gas refrigerant communication pipe 6 side.
  • the outdoor heat exchanger 23 is a heat exchanger that functions as a refrigerant radiator that uses outdoor air as a cooling source during cooling operation, and functions as a refrigerant evaporator that uses outdoor air as a heating source during heating operation.
  • the outdoor heat exchanger 23 has a liquid side connected to the liquid refrigerant pipe 35 and a gas side connected to the first gas refrigerant pipe 33.
  • the liquid refrigerant pipe 35 is a refrigerant pipe that connects the liquid side of the outdoor heat exchanger 23 and the liquid refrigerant communication pipe 5 side.
  • the expansion valve 24 is a valve that depressurizes the high-pressure refrigerant in the refrigeration cycle that has radiated heat in the outdoor heat exchanger 23 to the low pressure in the refrigeration cycle during the cooling operation.
  • the accumulator 25 is a container for temporarily storing the low-pressure refrigerant sucked into the compressor 21.
  • the accumulator 25 is provided in the suction pipe 31.
  • the liquid side shutoff valve 26 and the gas side shutoff valve 27 are valves provided at connection ports with external devices and pipes (specifically, the liquid refrigerant communication pipe 5 and the gas refrigerant communication pipe 6).
  • the liquid side closing valve 26 is provided at the end of the liquid refrigerant pipe 35.
  • the gas side closing valve 27 is provided at the end of the second gas refrigerant pipe 34.
  • the outdoor unit 2 has an outdoor fan 36 for sucking outdoor air into the outdoor unit 2 and exchanging heat with the refrigerant in the outdoor heat exchanger 23 and then discharging the air to the outside.
  • Refrigerant communication pipes 5 and 6 are refrigerant pipes constructed on site when the air conditioner 1 is installed at an installation location such as a building, and installation conditions such as the installation location and a combination of an outdoor unit and an indoor unit. Those having various lengths and tube diameters are used.
  • the refrigerant circuit 10 of the air conditioner 1 is configured by connecting the outdoor unit 2, the indoor unit 4, and the refrigerant communication pipes 5 and 6.
  • the air conditioner 1 performs a cooling operation in which the refrigerant is circulated in the order of the compressor 21, the outdoor heat exchanger 23, the expansion valve 24, and the indoor heat exchanger 41 by switching the four-way switching valve 22 to the cooling cycle state. It has become.
  • the high-pressure gas refrigerant sent to the outdoor heat exchanger 23 performs heat exchange with the outdoor air supplied as a cooling source by the outdoor fan 36 in the outdoor heat exchanger 23 to dissipate heat to become a high-pressure liquid refrigerant. .
  • Step 1 is the minimum number of rotations (here, 200 rpm) set due to characteristics such as internal heat generation of the outdoor fan motor 37, and the outdoor fan 36 is lower than the minimum number of rotations of Step 1. It cannot be operated at the rotation speed.
  • Step 1-X and 1-Y corresponding to rotation speeds of 100 rpm and 150 rpm (pseudo rotation speed) which are apparently lower than the minimum rotation speed of Step 1 are also set. It will be described later.
  • These fan steps are stored in the memory or the like of the control unit 8, and the specific value of the rotational speed at each fan step is not limited to that shown in FIG.
  • Control (outdoor fan duty) is repeated at least once (in this case, operation and stop are performed once) between stop and stop (0 rpm).
  • the rotational speed of the outdoor fan 36 is averaged over the entire time range of the control time interval ⁇ tc.
  • the outdoor fan 36 apparently has a rotation speed Step 1 averaged according to the time ratio between the operation time ⁇ t-duty 1 and the stop time ⁇ t-duty 2 at the minimum rotation speed as the predetermined rotation speed during the control time interval ⁇ tc.
  • the outdoor fan 36 is operated at a minimum rotational speed (200 rpm) or more that is restricted from the viewpoint of equipment protection, and the pseudo rotational speed 1-X that is apparently smaller than the minimum rotational speed by the fan duty control. (100 rpm) and 1-Y (150 rpm) can be set. If the high pressure Ph cannot be maintained at the target high pressure Phs or more even when the outdoor fan 36 is reduced to the minimum rotational speed during high pressure control, the fan steps Step 1-X, 1-Y with pseudo rotational speeds of 100 rpm and 150 rpm are performed. The rotational speed of the outdoor fan 36 can be changed in such a manner. For this reason, unlike the case where the high pressure control without the fan duty control is performed (see FIG. 5), as shown in FIG. 8, a situation occurs in which the high pressure Ph hunts greatly up and down across the target high pressure Phs. It becomes difficult. For example, the high pressure Ph is stably maintained at the target high pressure Phs while the fan step is changed between Step 1-X and Step 1-Y.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Appareil de conditionnement d'air (1) effectuant une commande de pression élevée par le biais de la modification de la vitesse de rotation d'un ventilateur extérieur (36) pendant une opération de refroidissement. Grâce à la commande de pression élevée, la vitesse de rotation du ventilateur extérieur (36) est modifiée conformément à la relation de pression, à intervalles de temps de commande prescrits, entre la pression élevée et la pression élevée cible. Même si le ventilateur extérieur (36) tombe à une vitesse de rotation minimale pendant la commande de pression élevée, lorsque la pression élevée pendant l'opération de refroidissement ne peut pas être maintenue au-dessus de la pression élevée cible, une commande d'utilisation de ventilateur, qui règle la vitesse de rotation du ventilateur extérieur (36) sur une pseudo-vitesse de rotation qui est inférieure à la vitesse de rotation minimale apparente, est effectuée par la commande du ventilateur extérieur (36) de sorte que l'actionnement et l'arrêt se produisent au moins une fois dans l'intervalle de temps de commande à une vitesse de rotation prescrite qui est au moins la vitesse de rotation minimale.
PCT/JP2013/062574 2012-05-18 2013-04-30 Appareil de conditionnement d'air WO2013172196A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012114231 2012-05-18
JP2012-114231 2012-05-18

Publications (1)

Publication Number Publication Date
WO2013172196A1 true WO2013172196A1 (fr) 2013-11-21

Family

ID=49583605

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/062574 WO2013172196A1 (fr) 2012-05-18 2013-04-30 Appareil de conditionnement d'air

Country Status (2)

Country Link
JP (1) JP2013257132A (fr)
WO (1) WO2013172196A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6559361B2 (ja) * 2016-09-06 2019-08-14 三菱電機株式会社 冷凍サイクル装置
US11156394B2 (en) 2018-02-27 2021-10-26 Johnson Controls Technology Company Systems and methods for pressure control in a heating, ventilation, and air conditioning (HVAC) system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0510609A (ja) * 1991-07-02 1993-01-19 Toshiba Corp 冷凍装置の凝縮圧力制御装置
JPH06307723A (ja) * 1993-04-21 1994-11-01 Matsushita Refrig Co Ltd 多室型空気調和機
JPH08338665A (ja) * 1995-06-13 1996-12-24 Sanyo Electric Co Ltd 凝縮器の送風制御方法、送風制御装置および冷凍装置
JP2001349597A (ja) * 2000-06-09 2001-12-21 Saginomiya Seisakusho Inc 空気調和機の制御装置
JP2005180818A (ja) * 2003-12-19 2005-07-07 Nakano Refrigerators Co Ltd 冷凍機制御装置
JP2006046812A (ja) * 2004-08-05 2006-02-16 Fuji Electric Retail Systems Co Ltd 冷却装置および自動販売機

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0510609A (ja) * 1991-07-02 1993-01-19 Toshiba Corp 冷凍装置の凝縮圧力制御装置
JPH06307723A (ja) * 1993-04-21 1994-11-01 Matsushita Refrig Co Ltd 多室型空気調和機
JPH08338665A (ja) * 1995-06-13 1996-12-24 Sanyo Electric Co Ltd 凝縮器の送風制御方法、送風制御装置および冷凍装置
JP2001349597A (ja) * 2000-06-09 2001-12-21 Saginomiya Seisakusho Inc 空気調和機の制御装置
JP2005180818A (ja) * 2003-12-19 2005-07-07 Nakano Refrigerators Co Ltd 冷凍機制御装置
JP2006046812A (ja) * 2004-08-05 2006-02-16 Fuji Electric Retail Systems Co Ltd 冷却装置および自動販売機

Also Published As

Publication number Publication date
JP2013257132A (ja) 2013-12-26

Similar Documents

Publication Publication Date Title
EP2320151B1 (fr) Dispositif de climatisation
JP5790736B2 (ja) 空気調和装置
WO2015046350A1 (fr) Appareil de conditionnement d'air
WO2013153980A1 (fr) Dispositif de climatisation
JP2015068610A (ja) 空気調和装置
WO2015115251A1 (fr) Dispositif de climatisation
JP6123289B2 (ja) 空気調和システム
WO2016098626A1 (fr) Dispositif de climatisation
WO2018164253A1 (fr) Dispositif de climatisation
JP6007965B2 (ja) 空気調和装置
JP2015083894A (ja) 冷凍装置
WO2013172196A1 (fr) Appareil de conditionnement d'air
WO2019021464A1 (fr) Dispositif de conditionnement d'air
WO2015046228A1 (fr) Appareil de conditionnement d'air
JP2020193760A (ja) 空調システム
JP7438342B2 (ja) 空気調和装置
JP6879322B2 (ja) 冷凍装置
JP2016156569A (ja) 冷凍装置
JP6353355B2 (ja) 空気調和装置
WO2019087400A1 (fr) Dispositif de climatisation
JP2015068570A (ja) 空気調和装置
KR101224647B1 (ko) 멀티형 히트 펌프 시스템의 사방밸브 제어 방법
JP2014126289A (ja) 空気調和システム
WO2015046230A1 (fr) Appareil de conditionnement d'air
JP2012117694A (ja) 冷凍装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13790779

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13790779

Country of ref document: EP

Kind code of ref document: A1