WO2004097306A1 - 空気調和装置の室外機 - Google Patents
空気調和装置の室外機 Download PDFInfo
- Publication number
- WO2004097306A1 WO2004097306A1 PCT/JP2004/006121 JP2004006121W WO2004097306A1 WO 2004097306 A1 WO2004097306 A1 WO 2004097306A1 JP 2004006121 W JP2004006121 W JP 2004006121W WO 2004097306 A1 WO2004097306 A1 WO 2004097306A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat exchanger
- air
- heat exchange
- outdoor unit
- suction port
- Prior art date
Links
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
- F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
- F24F1/50—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow with outlet air in upward direction
-
- 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
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/18—Heat exchangers specially adapted for separate outdoor units characterised by their shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
-
- 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
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
Definitions
- the present invention relates to an outdoor unit of an air conditioner, and more particularly to an outdoor unit of an air conditioner provided with a heat exchanger improved to suppress the frequency of frosting operation during a heating operation.
- a large-capacity outdoor unit is provided with a top-blowing type blower.
- the wind speed balance with respect to the heat exchanger is extremely poor, and the wind speed at the top of the heat exchanger near the blower is large, whereas the bottom of the heat exchanger is extremely low. The wind speed becomes smaller. Due to this difference in wind speed, during the heating operation, the evaporating capacity at the lower part of the heat exchanger having a low wind speed is reduced, and frost is easily formed, thereby increasing the frequency of defrosting operation.
- an outdoor unit of an air conditioner In order to reduce the ventilation resistance at the lower part of the heat exchanger, an outdoor unit of an air conditioner has been proposed in which a part of the front row of a plurality of tubes (heat exchange) is cut off.
- a blower is arranged at the front.
- the side-blowing type heat exchanger adopts a structure in which the lower part of the front row side of the fin tube type heat exchanger is cut out, but this is simply to reduce the ventilation resistance at the lower part, and No consideration was given to improving the heating operation efficiency by restricting the length of the notch and suppressing frost formation and reducing the frequency of defrosting operation.
- the present invention has been made in consideration of the above-described circumstances, and is intended to reduce the frequency of defrosting operation and improve the heating operation efficiency by suppressing frost formation during the heating operation even in an outdoor unit having an upper blowing structure. It is an object of the present invention to provide an outdoor unit of an air conditioner that can perform air conditioning. Disclosure of the invention
- a housing having an air suction opening provided on an upper side while an air suction opening is provided on a side portion
- a blower provided in the housing so as to face the air outlet, and to blow air toward the outlet;
- a heat exchanger that is provided at a rear portion of the air suction port and that performs heat exchange with air taken in from the air suction port by the blower;
- the heat exchanger is a fin tube type heat exchanger formed by arranging a plurality of heat exchange units in which a plurality of heat transfer tubes are arranged along the longitudinal direction of the fins in the air flow direction.
- the heat exchanger is erected so as to face the suction port, and a supercooling heat exchanger section is provided in the first row of heat exchange units on the side of the suction port.
- An outdoor unit for an air conditioner characterized in that it is arranged so as to occupy 20 to 50% of the total length at the lower part of the first heat exchange unit row. You.
- the length of the subcooling heat exchanger section in the first row of the heat exchange unit row is preferably 30 to 40% with respect to the entire length.
- an outdoor unit of an air conditioner that can greatly suppress frost formation during the heating operation, reduce the frequency of the defrosting operation, and improve the heating operation efficiency.
- a housing provided with an air inlet on the side and an air outlet on the top
- a blower provided in the housing so as to face the air outlet, and to blow air toward the outlet;
- a heat exchanger that is provided at a rear portion of the air suction port and that performs heat exchange with air taken in from the air suction port by the blower;
- the heat exchanger is a fin tube type heat exchanger formed by arranging a plurality of heat exchange unit rows in which a plurality of heat transfer tubes are arranged along the longitudinal direction of the fins in the air flow direction.
- the heat exchanger is erected in opposition to the suction port, and the heat exchange unit row most inside the casing when viewed from the suction port side is present only at the upper part of the heat exchanger and has the entire length of the other heat exchange unit rows.
- An outdoor unit of an air conditioner wherein the outdoor unit has a length of 50% or less.
- FIG. 1 is a conceptual diagram of an outdoor unit of an air conditioner according to a first embodiment of the present invention.
- FIG. 2 is an explanatory diagram of an outdoor unit of the air conditioner according to the present invention.
- FIG. 3 is a Mollier diagram (p—h diagram) of the air-conditioning apparatus incorporating the outdoor unit of the air-conditioning apparatus according to the present invention during a room operation.
- FIG. 4 is a conceptual diagram of a second embodiment of an outdoor unit of an air conditioner according to the present invention, in which solid arrows indicate heating (during defrosting) and chain arrows indicate cooling. I have. BEST MODE FOR CARRYING OUT THE INVENTION
- the outdoor unit 1 of the air conditioner includes a housing 4 having an air inlet 2 on a side and an air outlet 3 on an upper portion.
- the heat exchanger 5 includes a heat exchanger 5 that is housed in the air inlet 4 and stands upright to face the air suction port 2, and a motor-driven blower 6 that faces the air outlet 3.
- the heat exchanger 5 includes a plurality of fins 7 and a plurality of heat transfer tubes 8 penetrating the fins 7 in a heat transfer manner and arranged in a longitudinal direction. Are arranged along the longitudinal direction of the fins 7 to form a heat exchange unit row 51, and the heat exchange unit rows 51 are formed by arranging a plurality of rows in the air flow direction.
- the heat exchanger 5 is independently connected to the header 9 and the distribution unit 10, respectively, and has a heat exchanger section 5G composed of a plurality of heat exchange blocks 5b for performing normal heat exchange, and a refrigerant. It consists of a supercooling heat exchanger section 5S for cooling.
- the supercooling heat exchanger section 5S is provided in the first heat exchange unit row 5 li on the suction side (the left side in FIG. 2), and has a length equal to the first heat exchange unit row 5 1. Is preferably from 20 to 50%, more preferably from 30 to 40%, based on the total length. If it is less than 20%, sufficient heat cannot be obtained from the subcooling heat exchanger, and frost formation cannot be sufficiently suppressed. If it exceeds 50%, the amount of heat from the supercooling heat exchanger section is too large, and the cooling (refrigerant evaporation) capacity of the heat exchanger section decreases.
- the supercooling heat exchanger section 5S has one end connected to the heat exchanger section 5G for performing normal heat exchange of the heat exchanger 5 via the distribution unit 10, and the other end connected to the indoor heat exchanger. It is connected to the throttle valve 12 connected to 11.
- reference numeral 13 denotes a compressor
- 14 denotes a four-way valve
- 15 denotes a liquid receiver.
- the air conditioner operates as shown in the Mollier diagram (ph diagram) shown in Fig. 3 during the heating operation.
- the vertical axis represents pressure (P)
- the horizontal axis represents specific enthalpy (h).
- P pressure
- h specific enthalpy
- the liquid refrigerant condensed (B) in the indoor heat exchanger 11 and decompressed (C) in the throttle valve 12 is supplied to the subcooling heat exchanger section 5 S of the heat exchanger 5. It is supercooled (D) by the horizontal airflow and reaches Disp. 10 overnight.
- the blower 6 is arranged to blow out the sucked air upward, so that the flow velocity of the air introduced into the heat exchanger 5 is As shown by a dotted arrow in FIG. 1, the lower part is smaller than the upper part of the heat exchanger 5, and frost formation tends to adhere to the lower part with a low flow velocity.
- the supercooling heat exchanger unit 5 S is, since it is disposed below the heat exchange unit columns 5 1 1 in the first column, the fins 7 of the heat exchange conversion Yunitto column 5 1 i is heat from the air stream The heat is transferred to the lower part of the second and third rows of heat exchangers 5 facing the heat exchange unit row 51, and the lower part is heated to suppress frost formation.
- the amount of heat D supercooled by the subcooling heat exchanger section 5S at this time is converted into the amount of heat X through the fins 7 in the second and third rows of the heat exchange unit rows. Heat is transferred to the lower part of 5 1 5 1 2
- the supercooling heat exchanger 5S has a higher temperature than the air (outside air), there is no frost even at a low outside air temperature, and therefore, as shown by the solid arrow in FIG.
- the upper part of the heat exchanger 5 becomes frosted and the ventilation resistance increases, whereas the lower part of the first row of heat exchange units 5 1 has no frost.
- the ventilation resistance at the lower part of the car becomes smaller. Thereby, the wind speed distribution of the entire heat exchanger 5 can be improved, and the heat exchange rate of the lower portion is improved.
- the subcooling heat exchanger section 5S can be used as a subcooler, and can increase the enthalpy difference as a condenser.
- the frequency of the defrosting operation can be reduced by suppressing the frost during the heating operation, and the heating operation efficiency can be improved. it can.
- the second embodiment is different from the first embodiment in that the subcooling heat exchanger section is provided below the first row of heat exchange unit rows, whereas the innermost heat exchange section of the plurality of rows of heat exchange unit rows is provided.
- the heat exchanger block is provided only in the upper part of the replacement unit row, and the lower block is eliminated. Things.
- the outdoor unit 1A of the air conditioner of the present embodiment has a heat exchanger 5A, and the heat exchanger 5A is transmitted along the longitudinal direction of the fin 7A. It consists of multiple rows of heat exchange units 5 A 1 in which the heat tubes 8 A are arranged.
- the innermost heat exchange unit row (heat exchange block) 5 A 13 is the other heat exchange unit row 5 A.
- the length is 50% or less of the length of 1, and the heat exchange block exists only in the upper part of the heat exchanger 5A, and does not exist in the lower part. If it exceeds 50%, frost will form on the lower part of the inner heat exchange unit row 5A13, and the heat exchange efficiency will decrease.
- the air flow passing through the conventional heat exchanger has a higher flow velocity as it passes through a position closer to the electric blower, and a lower wind speed as it moves away from the blower. Since there is no heat exchange block at the lower part of the exchange unit row 5A13, the ventilation resistance is reduced, and the air flow velocity in the height direction of the heat exchanger 5A can be made uniform, and the heat exchanger 5A The heat exchange efficiency of the lower part can be improved, the amount of frost can be reduced, and the defrosting time can be reduced.
- Other configurations are the same as those of the outdoor unit of the air conditioner shown in FIG. 1, and therefore, the same reference numerals are given and the description is omitted.
- the outdoor unit of the air conditioner which concerns on this invention, it becomes possible to suppress frost formation at the time of a heating operation, it is possible to reduce the frequency of the defrosting operation and to improve the heating operation efficiency. It can be suitably used as an outdoor unit of an air conditioner.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003125437A JP2004347135A (ja) | 2003-04-30 | 2003-04-30 | 空気調和装置の室外機 |
JP2003-125437 | 2003-04-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004097306A1 true WO2004097306A1 (ja) | 2004-11-11 |
Family
ID=33410223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/006121 WO2004097306A1 (ja) | 2003-04-30 | 2004-04-28 | 空気調和装置の室外機 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2004347135A (ja) |
WO (1) | WO2004097306A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102859299A (zh) * | 2010-04-23 | 2013-01-02 | 阿拂迈克奎公司 | 流体分配器和设有流体分配器的环境控制系统 |
CN103090596A (zh) * | 2011-11-03 | 2013-05-08 | 上海瀚艺冷冻机械有限公司 | 翅片式换热器 |
WO2014201828A1 (zh) * | 2013-06-19 | 2014-12-24 | 珠海格力电器股份有限公司 | 空调系统 |
CN108006941A (zh) * | 2017-11-21 | 2018-05-08 | 广东美的制冷设备有限公司 | 换热装置及空调设备 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010071530A (ja) | 2008-09-17 | 2010-04-02 | Daikin Ind Ltd | 空気調和装置 |
JP5493736B2 (ja) * | 2009-11-10 | 2014-05-14 | 三菱電機株式会社 | 空調室外機 |
JP5304741B2 (ja) * | 2010-07-20 | 2013-10-02 | ダイキン工業株式会社 | 空気調和装置 |
JP2012063033A (ja) * | 2010-09-14 | 2012-03-29 | Panasonic Corp | 空気調和機 |
JP6179414B2 (ja) * | 2014-01-30 | 2017-08-16 | ダイキン工業株式会社 | 冷凍装置の熱源ユニットの熱交換器、および、それを備えた熱源ユニット |
WO2015151289A1 (ja) | 2014-04-04 | 2015-10-08 | 三菱電機株式会社 | 空気調和装置 |
US10156387B2 (en) | 2014-12-18 | 2018-12-18 | Lg Electronics Inc. | Outdoor device for an air conditioner |
JP6733419B2 (ja) * | 2016-08-22 | 2020-07-29 | アイシン精機株式会社 | 空気調和装置の室外機 |
EP4006474A4 (en) | 2019-07-29 | 2022-08-03 | Mitsubishi Electric Corporation | HEAT EXCHANGER AND REFRIGERATION CYCLE DEVICE |
CN111412637A (zh) * | 2020-04-07 | 2020-07-14 | 珠海格力电器股份有限公司 | 空调器的控制方法及控制装置、热泵空调器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06272903A (ja) * | 1993-03-23 | 1994-09-27 | Mitsubishi Heavy Ind Ltd | 空気調和機の室外ユニット |
JP2003042586A (ja) * | 2002-02-25 | 2003-02-13 | Daikin Ind Ltd | 室外熱交換器および空気調和機 |
JP2003056930A (ja) * | 2001-08-08 | 2003-02-26 | Hitachi Ltd | 空気熱源ヒートポンプ装置、水冷式ヒートポンプ装置、空冷式冷凍装置及び水冷式冷凍装置 |
-
2003
- 2003-04-30 JP JP2003125437A patent/JP2004347135A/ja active Pending
-
2004
- 2004-04-28 WO PCT/JP2004/006121 patent/WO2004097306A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06272903A (ja) * | 1993-03-23 | 1994-09-27 | Mitsubishi Heavy Ind Ltd | 空気調和機の室外ユニット |
JP2003056930A (ja) * | 2001-08-08 | 2003-02-26 | Hitachi Ltd | 空気熱源ヒートポンプ装置、水冷式ヒートポンプ装置、空冷式冷凍装置及び水冷式冷凍装置 |
JP2003042586A (ja) * | 2002-02-25 | 2003-02-13 | Daikin Ind Ltd | 室外熱交換器および空気調和機 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102859299A (zh) * | 2010-04-23 | 2013-01-02 | 阿拂迈克奎公司 | 流体分配器和设有流体分配器的环境控制系统 |
CN102859299B (zh) * | 2010-04-23 | 2016-03-02 | 阿拂迈克奎公司 | 流体分配器和设有流体分配器的环境控制系统 |
CN103090596A (zh) * | 2011-11-03 | 2013-05-08 | 上海瀚艺冷冻机械有限公司 | 翅片式换热器 |
WO2014201828A1 (zh) * | 2013-06-19 | 2014-12-24 | 珠海格力电器股份有限公司 | 空调系统 |
CN108006941A (zh) * | 2017-11-21 | 2018-05-08 | 广东美的制冷设备有限公司 | 换热装置及空调设备 |
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Publication number | Publication date |
---|---|
JP2004347135A (ja) | 2004-12-09 |
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