WO2020261734A1 - 冷凍サイクル装置の室外機 - Google Patents

冷凍サイクル装置の室外機 Download PDF

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Publication number
WO2020261734A1
WO2020261734A1 PCT/JP2020/017206 JP2020017206W WO2020261734A1 WO 2020261734 A1 WO2020261734 A1 WO 2020261734A1 JP 2020017206 W JP2020017206 W JP 2020017206W WO 2020261734 A1 WO2020261734 A1 WO 2020261734A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant
receiver
condensers
receivers
outdoor unit
Prior art date
Application number
PCT/JP2020/017206
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
裕昭 渡邉
光輔 小澤
憲二郎 松本
允嗣 村瀬
Original Assignee
東芝キヤリア株式会社
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 東芝キヤリア株式会社 filed Critical 東芝キヤリア株式会社
Priority to JP2021527415A priority Critical patent/JP7198355B2/ja
Priority to CN202090000588.XU priority patent/CN217058027U/zh
Publication of WO2020261734A1 publication Critical patent/WO2020261734A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • 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

Definitions

  • An embodiment of the present invention relates to an outdoor unit of a refrigeration cycle device.
  • the refrigeration cycle device circulates refrigerant by connecting an outdoor unit such as a refrigerator (condensin unit) and an indoor unit such as a showcase or an air conditioner with a pipe.
  • an outdoor unit such as a refrigerator (condensin unit)
  • an indoor unit such as a showcase or an air conditioner
  • the refrigerant may be in a gas-liquid mixed state on the outlet side of the condenser
  • the supercooler arranged on the rear side of the condenser is used.
  • the outdoor unit may be equipped with multiple condensers. Then, depending on the specifications of the load device such as the indoor unit to be connected and the pipe length, a large-capacity receiver may be required to receive the refrigerant supplied from the plurality of condensers.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is a refrigeration cycle apparatus capable of easily transporting a liquid refrigerant to the rear stage side of a condenser in a configuration including a plurality of condensers. To provide the outdoor unit of.
  • the outdoor unit of the refrigeration cycle apparatus of the embodiment includes a plurality of condensers and a plurality of receivers provided in the same number as the plurality of condensers and connected to the outlets of the respective condensers, and a plurality of condensers.
  • the vessels are connected to each other on the inlet side of the refrigerant and individually connected to the corresponding receivers on the outlet side of the refrigerant, with the plurality of receivers below the inlet of the refrigerant in the installed state.
  • Refrigerant outlets are provided and are connected to each other on the refrigerant outlet side.
  • the figure which shows typically the structure of the refrigerating cycle apparatus in embodiment The figure which shows the structure of the receiver schematically
  • the refrigeration cycle device 1 of the present embodiment includes an outdoor unit 2 and an indoor unit 3 as a load device.
  • the outdoor unit 2 and the indoor unit 3 are connected by an external pipe 4 through which a refrigerant circulates.
  • a refrigerating cycle device 1 for air conditioning is assumed, but the outdoor unit 2 can be used by a so-called refrigerating machine (condensining unit) for cooling equipment, cooling articles in a showcase, and the like. It can also be applied to the above applications.
  • FIG. 1 shows an example in which one indoor unit 3 is provided for simplification of the description
  • a configuration in which a plurality of load devices are connected may be provided, such as by providing a plurality of indoor units 3.
  • the outdoor unit 2 and the indoor unit 3 are also connected by electrical wiring for control.
  • the outdoor unit 2 includes a plurality of condensers 6, the same number of receivers 7 as the condensers 6, and one supercooler 8 in the housing 5.
  • the condenser 6 is composed of a so-called fin tube type heat exchanger, and is configured to have the same size in the present embodiment. That is, a plurality, for example, three (see FIG. 3) condensers 7 having the same dimensions, the same capacity, and the same heat exchange area are provided.
  • Each condenser 6 is connected in parallel to each other via a branch pipe 20 on the inlet side of the refrigerant shown as “IN” in FIG. 1, and corresponds to a receiver on the outlet side of the refrigerant shown as “OUT” in FIG.
  • the liquid vessel 7 and the refrigerant pipe 21 are individually and directly connected to each other.
  • the refrigerant flowing out from each condenser 6 flows into one corresponding receiver 7.
  • the refrigerant flowing out of the condenser 6 may be in a gas-liquid mixed state.
  • the liquid receiver 7 is formed in a substantially cylindrical shape, and is provided with an inlet for the refrigerant shown as “IN” in FIG. 1 on the upper side in the installed state, and “OUT” in FIG. 1 below the inlet. There is an outlet for the refrigerant shown as.
  • each receiver 7 has a body length of 600 mm to 700 mm and an outer shape (D) of which does not exceed 160 mm. Further, since the plurality of receivers 7 are provided, the volume required for each receiver 7 is also reduced. Therefore, each receiver 7 is classified into a pipe and a simple container under the High Pressure Gas Safety Act. That is, the pressure resistance can be improved by making the volume relatively small.
  • the receivers 7 are connected to each other on the outlet side of the refrigerant.
  • a supercooler 8 connected via a merging pipe 22 is provided on the outlet side of the liquid receiver 7.
  • the supercooler 8 is composed of a so-called fin tube type heat exchanger, and the refrigerant flowing out from each receiver 7, that is, the liquid among the refrigerants separated into gas and liquid inside each receiver 7.
  • the refrigerant in the state flows in. That is, the refrigerant is conveyed in a liquid state to the supercooler 8 provided on the rear side of the condenser 6.
  • the refrigerant that has passed through the supercooler 8 is conveyed to the indoor unit 3 through the external pipe 4.
  • the indoor unit 3 includes an expansion device 13, an indoor heat exchanger 3a, a blower fan 3b, an indoor control unit 3c, and the like.
  • the indoor heat exchanger 3a functions as an air-conditioning evaporator that evaporates the refrigerant decompressed by the expansion device 13.
  • the configuration of the indoor unit 3 is an example, and the present invention is not limited to this.
  • the refrigerant that has passed through the indoor unit 3 is returned to the outdoor unit 2 through the external pipe 4.
  • the outdoor unit 2 is provided with an accumulator 9, two compressors 10 connected in parallel, an oil separator 11, a control unit 12, and the like.
  • the refrigerant returned to the outdoor unit 2 through the external pipe 4 is compressed by the two compressors 10 in a gas-liquid separated state by the accumulator 9, and after the oil is removed by the oil separator 11, the branch pipe 20 is connected. It flows into each condenser 6 through.
  • each condenser 6 has the same heat exchange performance, that is, the shape and the like are almost the same. Therefore, the refrigerant that has passed through the oil separator 11 flows evenly into each condenser 6. In addition, almost the same includes a state in which they match and a state in which they are within a predetermined allowable range. Then, each device is controlled by the control unit 12 provided in the outdoor unit 2 and the indoor control unit 3c provided in the indoor unit 3, and the refrigerant circulates between the outdoor unit 2 and the indoor unit 3. By doing so, the refrigeration cycle device 1 is operating.
  • the refrigerant may be in a gas-liquid mixed state on the outlet side of the condenser 6, while it is arranged on the rear side of the condenser 6 in order to efficiently use the refrigeration cycle device 1. It is desirable to transport the refrigerant in a liquid state to the supercooler 8.
  • the refrigerant in the gas-liquid mixed state is transferred from one condenser 6 to the plurality of receivers 7, or from the plurality of condensers 6 to a plurality of liquid receivers. It is difficult to evenly distribute gas and liquid to the vessel 7.
  • the liquid refrigerant is conveyed to the rear stage side of the condenser 6 without increasing the capacity of the receiver 7. I am trying to be able to do it.
  • the outdoor unit 2 of the present embodiment includes a plurality of condensers 6 and a plurality of liquid receivers 7.
  • Each condenser 6 is connected to one receiver 7. That is, the path between the condenser 6 and the liquid receiver 7 is not provided with a mechanism, structure or member for distributing the refrigerant or adjusting the flow rate, and is directly connected by the refrigerant pipe 21.
  • the plurality of refrigerant pipes 21 are formed with substantially the same pipe length, and even the longest one is preferably twice or less the shortest refrigerant pipe 21.
  • gas-liquid mixing is different from, for example, when the refrigerant is distributed from one condenser 6 to a plurality of receivers 7 or the refrigerant is distributed from a plurality of condensers 6 to one receiver 7. It is possible to eliminate the need to arrange a valve or the like that evenly distributes the gas and liquid of the refrigerant in the state.
  • each receiver 7 is provided with a refrigerant outlet below the refrigerant inlet in the installed state. Therefore, the liquid refrigerant is accumulated on the outlet side of the receiver 7 due to gravity, and the liquid refrigerant flows out to the rear side of the receiver 7.
  • each condenser 6 has the same heat exchange performance and each receiver 7 is formed to have substantially the same size (capacity) and shape (dimension), each liquid receiver 7 is formed.
  • the liquid refrigerant flows out from the vessel 7 at almost the same flow rate. Therefore, for the supercooler 8 connected to the outlet side of the plurality of receivers 7 connected to each other, even if the refrigerant is not distributed on the outlet side of the receiver 7, the refrigerant can be used. Even if the flow rate is not adjusted, the liquid refrigerant that has evenly flowed out from each receiver 7 is supplied.
  • each receiver 7 can be relatively reduced as compared with the case where one receiver 7 is provided. As a result, the size of the manufacturing equipment is less likely to be restricted, and manufacturing can be easily performed. Further, by dispersing the receivers 7 and setting the dimensions and capacities of the receivers 7 to a predetermined value or less, the pressure resistance of the device can be increased and the safety can be enhanced. In particular, for example, it is possible to form the receiver 7 in a size classified as a pipe or a simple container under the High Pressure Gas Safety Act, and the High Pressure Gas Safety Act compared with the case of a size classified as a pressure vessel. The conditions for complying with are relaxed.
  • the body length of the receiver 7 for storing the refrigerant having a compressor discharge pressure of 0.2 MPa or more is 1000 mm or less, and the inner diameter is 200 mm or less.
  • the product By setting the product to 0.04 m ⁇ 3 or less, it can be treated as a simple container under the High Pressure Gas Safety Act. That is, by using the receiver 7 that meets such conditions, pressure resistance can be ensured, safety tests performed at the time of manufacturing can be simplified, and the entire manufacturing process can be made efficient. , Manufacturing cost can be reduced.
  • a condenser 6, a compressor 10, an accumulator 9, a compressor 10, an oil separator 11, a control unit 12, and the like are housed in the housing 5 of the outdoor unit 2. ing.
  • the large receiver is arranged on the side surface of any of the condensers 6, that is, on the air passage, and the heat exchange of the condenser 6 is performed.
  • the heat exchange performance of each condenser 6 may vary.
  • the supercooler 8 is provided without providing a structure for distributing the refrigerant or adjusting the flow rate. It is possible to properly convey the refrigerant in a liquid state.
  • the outdoor unit 2 includes a plurality of condensers 6 and a plurality of receivers 7 provided in the same number as the plurality of condensers 6 and connected to each condenser 6 on a one-to-one basis. ..
  • the plurality of condensers 6 are connected to each other on the inlet side of the refrigerant and are individually connected to the corresponding receivers 7 on the outlet side of the refrigerant, and the plurality of receivers 7 are connected to each other.
  • the refrigerant outlet is provided below the inlet in the installed state.
  • the refrigerant flows out from one condenser 6 to one receiver 7, so there is no need to distribute the refrigerant or adjust the flow rate. Therefore, in the configuration including the plurality of condensers 6, the liquid refrigerant can be easily conveyed to the rear stage side of the condensers 6.
  • the outdoor unit 2 is equipped with a supercooler 8. Then, the supercooler 8 is connected to the outlet side of a plurality of receivers 7 connected to each other. As a result, the refrigerant in a liquid state is supplied to the supercooler 8, and the refrigeration cycle device 1 can be efficiently used.
  • the outdoor unit 2 does not have a mechanism, structure or member for distributing the refrigerant or adjusting the flow rate in the path between the condenser 6 and the liquid receiver 7. As a result, the piping and structure are not complicated.
  • a plurality of condensers 6 are formed to have the same capacity to have a common heat exchange performance, and a plurality of receivers 7 are formed to have the same capacity.
  • the capacity ratio of the capacity of the condenser 6 and the capacity of the receiver 7 is formed to be the same in the plurality of condensers 6 and the plurality of receivers 7 connected in a one-to-one manner. Has been done.
  • the volume ratio is also configured to be a: b.
  • the outdoor unit 2 is used as a so-called refrigerator (condensin unit) for equipment requiring cooling or for cooling and air conditioning is shown, but cooling (cooling) operation is performed by providing a three-way valve or the like that changes the flow of the refrigerant. It can also be used for so-called outdoor units capable of heating (heating) operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Air-Conditioning Systems (AREA)
PCT/JP2020/017206 2019-06-25 2020-04-21 冷凍サイクル装置の室外機 WO2020261734A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2021527415A JP7198355B2 (ja) 2019-06-25 2020-04-21 冷凍サイクル装置の室外機
CN202090000588.XU CN217058027U (zh) 2019-06-25 2020-04-21 制冷循环装置的室外机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019117288 2019-06-25
JP2019-117288 2019-06-25

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WO2020261734A1 true WO2020261734A1 (ja) 2020-12-30

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CN (1) CN217058027U (zh)
WO (1) WO2020261734A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116202244A (zh) * 2022-12-22 2023-06-02 珠海格力电器股份有限公司 换热装置、空调器、空调器的控制方法、装置与空调系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529938U (zh) * 1975-07-09 1977-01-24
JP2009228975A (ja) * 2008-03-24 2009-10-08 Hitachi Appliances Inc リモートコンデンサ型の空気調和機
JP2013195016A (ja) * 2012-03-21 2013-09-30 Daikin Industries Ltd 室外マルチ型空気調和装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529938U (zh) * 1975-07-09 1977-01-24
JP2009228975A (ja) * 2008-03-24 2009-10-08 Hitachi Appliances Inc リモートコンデンサ型の空気調和機
JP2013195016A (ja) * 2012-03-21 2013-09-30 Daikin Industries Ltd 室外マルチ型空気調和装置

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CN217058027U (zh) 2022-07-26
JP7198355B2 (ja) 2022-12-28

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