WO2012063277A1 - Cooling device for air-conditioning outdoor unit and heat exchanging system - Google Patents

Cooling device for air-conditioning outdoor unit and heat exchanging system Download PDF

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Publication number
WO2012063277A1
WO2012063277A1 PCT/JP2010/006548 JP2010006548W WO2012063277A1 WO 2012063277 A1 WO2012063277 A1 WO 2012063277A1 JP 2010006548 W JP2010006548 W JP 2010006548W WO 2012063277 A1 WO2012063277 A1 WO 2012063277A1
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Prior art keywords
outdoor unit
air
mist
cooling device
heat exchanger
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PCT/JP2010/006548
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French (fr)
Japanese (ja)
Inventor
剛 長廣
Original Assignee
Nagahiro Tsuyoshi
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Application filed by Nagahiro Tsuyoshi filed Critical Nagahiro Tsuyoshi
Priority to PCT/JP2010/006548 priority Critical patent/WO2012063277A1/en
Publication of WO2012063277A1 publication Critical patent/WO2012063277A1/en

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    • 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
    • F24F1/42—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger characterised by the use of the condensate, e.g. for enhanced cooling
    • 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
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
    • F24F1/58—Separate protective covers for outdoor units, e.g. solar guards, snow shields or camouflage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F24F6/14—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles

Definitions

  • the present invention relates to an air conditioner outdoor unit cooling apparatus and a heat exchange system including the same.
  • an air heat exchange system including a heat pump compressor has been used as an air conditioning system.
  • a compressor a first heat exchanger that functions as a condenser during cooling (a heat exchanger in an outdoor unit), and a second heat exchanger that functions as an evaporator during cooling (in an indoor unit)
  • the heat exchanger is connected by piping, and the refrigerant circulates in the system connected by the piping.
  • Patent Document 1 a water spray device is attached to a heat exchanger in an outdoor unit, and water is injected into the heat exchanger of the outdoor unit as necessary. Has been proposed.
  • water is jetted to the heat exchanger of the outdoor unit to reduce the temperature of the fins in the heat exchanger of the outdoor unit, thereby reducing the power load. .
  • Patent Document 1 has a problem of deterioration due to rust of fins in the heat exchanger of the outdoor unit. That is, the injected water directly hits the heat exchanger fins, and the heat exchanger fins corrode because a large amount of water must be injected into the heat exchanger to cool the heat exchanger fins. I can't avoid that.
  • the present invention has been made in order to solve the above-described problems, and is capable of reducing power consumption and reducing environmental load while suppressing deterioration of a heat exchanger.
  • An object is to provide a cooling device and a heat exchange system.
  • the present invention adopts the following configuration.
  • An air conditioner outdoor unit cooling device attached to a heat exchanger in an air conditioner, which is disposed upstream of the suction air flow of the heat exchanger and has a particle size of 45 [ ⁇ m] or less.
  • a mist spraying section having a spray nozzle for spraying is provided.
  • the solar shading hood includes a frame body made of aluminum steel and a cloth, and the solar shading curtain stretched on the frame body It is comprised by these.
  • aluminum steel material refers to an aluminum extruded product whose surface has been anodized.
  • mist spraying unit and the second mist spraying unit include a drain valve with respect to a water supply pipe connected to each spray nozzle. Each is provided.
  • a heat exchange system includes the air conditioner outdoor unit cooling device according to any one of [1] to [14].
  • the “mist” sprayed from the mist spraying section can be defined as an average particle size of 30 [ ⁇ m] or less, for example.
  • the average particle diameter in this case, the average particle diameter of Sauter can be used.
  • the average particle diameter X (ave) can be expressed by the following equation.
  • the air conditioner outdoor unit cooling device includes a mist spraying section that sprays mist having a particle size of 45 [ ⁇ m] or less. For this reason, it is possible to effectively cool the fins of the heat exchanger while preventing the corrosion of the fins in the heat exchanger without directly wetting the fins of the heat exchanger by the mist sprayed from the mist spraying section. . That is, in the air conditioner outdoor unit cooling device according to the present invention, the fins in the heat exchanger can be cooled with the minimum amount of mist sprayed with respect to the fan air volume of the outdoor unit, and the mist particles with the minimum particle size that cannot be transpired. Since it is transmitted to the fins, it is possible to improve the heat exchange efficiency while greatly reducing the amount of mist sprayed, and to suppress the occurrence of corrosion and rust.
  • the air conditioner outdoor unit cooling apparatus it is possible to reduce power consumption and environmental burden while suppressing deterioration of the heat exchanger.
  • the heat exchange system according to the present invention includes the air-conditioning outdoor unit cooling device according to the present invention, so that the same effect as described above can be obtained.
  • the spray nozzle is arranged at least 30 [cm] away from the fins in the heat exchanger, for example, an air temperature of 25 [° C.] or higher In an environment where the humidity is 60% or less, it is possible to reliably prevent most of the mist from vaporizing and adhering to the fins of the heat exchanger.
  • the nozzle port of the spray nozzle faces the region excluding the region where the fins are arranged in the heat exchanger, that is, the fins do not exist on the extended line of the nozzle port. If arranged, only the sprayed mist with small particle size will change the direction of travel to the heat exchanger, and the large particle size mist will go straight down and fall down vertically. It will be. For this reason, deterioration of a heat exchanger can be prevented more reliably.
  • the inflow direction of the air related to the suction can be stabilized, and the temperature reduction effect by the mist sprayed from the mist spraying section can be achieved. It can be obtained more effectively.
  • the heat shield is provided on the upper part of the solar shading hood, coupled with the solar shading curtain made of cloth, the hot air is introduced from the upper part of the solar shading hood. Therefore, the temperature of the air sucked into the air conditioner outdoor unit can be reduced.
  • the water storage tank is provided at the lower part of the solar shading hood, the portion that could not be evaporated by the discharged water is stored in the water storage tank below the air conditioner outdoor unit.
  • the used water is utilized, and the solar radiation load on the outdoor unit grounding portion can be reduced.
  • the spray nozzle is an empty cone spray nozzle, the amount of mist that comes into contact with air can be stabilized.
  • the amount of mist spray can be varied according to the gas flow characteristics.
  • the second mist spraying section for spraying mist having a particle size of more than 45 [ ⁇ m] and 300 [ ⁇ m] or less is provided, the fins in the outdoor unit Cleaning and the like are possible, and the occurrence of fin corrosion and rust can be effectively suppressed.
  • the mist sprayed from the second mist spraying section flows along the surface of the heat exchanger, and as described in [12] above, the second mist spraying is performed. It is particularly effective if the cleaning chemical is mixed in the mist sprayed from the part.
  • FIG. 3 is a schematic cross-sectional view showing components of the outdoor unit 10. It is a schematic side view which shows the spray nozzle 106 and its peripheral part. It is a wet air diagram.
  • the outdoor unit 10 and the indoor unit 20 are connected by refrigerant pipes 31 and 32, and a control unit 40 that performs these controls is attached.
  • the outdoor unit 10 includes a heat exchanger 101 that functions as a condenser during cooling, an outdoor fan 102, and a compressor 103 that compresses the refrigerant in the pipe 31.
  • the indoor unit 20 includes a heat exchanger 201 that functions as an evaporator during cooling, and an indoor fan 202 that sends out cool air.
  • the heat exchanging system 1 includes a control unit 40 that controls the operation of the outdoor unit 10 and the indoor unit 20 based on user instruction information and indoor and outdoor temperature / humidity.
  • Outdoor unit cooling device attached to outdoor unit 10 The configuration of an outdoor unit cooling device included in heat exchange system 1 according to the present embodiment and attached to outdoor unit 10 is shown in FIGS. 3 will be described.
  • the outdoor unit 10 includes a heat exchanger 101 formed on a side surface, a compressor 103 disposed below the heat exchanger 101, and an outdoor fan 102 attached to the top. And with respect to this outdoor unit 10, the solar radiation shielding hoods 104 and 105 which comprise an outdoor unit cooling device are attached to the side, and also in one solar radiation shielding hood 104, a plurality of mist spray nozzles 106, 107, 108 is installed.
  • Water supply pipes 109, 110, 111 for supplying water are connected to the mist spray nozzles 106, 107, 108, respectively. And the high-pressure pump is connected to the other end of each water supply pipe 109,110,111 (illustration omitted). Although not shown, the high-pressure pumps connected to the mist injection nozzles 106, 107, and 108 are operated based on signals from the control unit 40.
  • a water storage tank 112 is installed below the solar shading hoods 104 and 105, and water drops falling from the solar shading hoods 104 and 105 can be stored. Thereby, it is possible to prevent the solar radiation load.
  • the mist spray nozzles 106, 107, 108 employ a copper tube structure that can be changed according to the gas flow characteristics.
  • the solar shading hoods 104 and 105 are composed of a frame body made of an aluminum steel material and a mesh-shaped light shielding cloth stretched on the frame body.
  • the frame body made of aluminum steel has the advantage of low radiant heat, and the light shielding cloth shields the influence of solar radiation by 60 [%] or more.
  • the solar shading hoods 104 and 105 having such a configuration are effective from the viewpoint of lowering the ambient temperature of the heat exchanger 101.
  • the areas of the openings 104a and 105a of the solar shading hoods 104 and 105 are set to 1/3 to 1/2 of the area of the fins in the heat exchanger 101.
  • the flow rate of air passing through the openings 104a and 105a is increased.
  • the flow rate of air passing through the fins of the heat exchanger 101 is reduced to 1/3 to 1 /. Reduced to 2.
  • the mist injection nozzles 106 and 107 installed at the edge portion facing the opening 104a of the solar shading hood 104 can spray mist having a particle size of 45 [ ⁇ m] or less.
  • the mist spray nozzles 106 and 107 can perform, for example, an empty cone spray and can stabilize the amount of mist that comes into contact with air.
  • AKI Jet registered trademark of Ikeuchi Co., Ltd.
  • AKI Jet registered trademark of Ikeuchi Co., Ltd.
  • the mist spray nozzles 106 and 107 are arranged so that each nozzle port thereof directly faces a region excluding a region where the fins of the heat exchanger 101 are disposed (so as not to face the fins). And at least 30 [cm] apart from each other. If the mist spray nozzles 106 and 107 are arranged in this manner, for example, the sprayed mist reaches the fins under conditions where the temperature is 25 [° C.] or higher and the humidity is 60 [%] or lower. Vaporize almost before.
  • the outside air temperature is adjusted.
  • air having a temperature lowered by 5 to 15 [° C.] can be introduced into the solar shading hood 104.
  • the mist spray nozzle 108 is installed immediately above the front surface of the fin of the heat exchanger 101, and can spray mist having a particle size of more than 45 [ ⁇ m] and 300 [ ⁇ m] or less.
  • the mist having such a particle size has an air temperature of 45 [° C.] or less, a humidity of 40 [%] or more, and a wind speed of 6 [m / min. Under the condition of], there is almost no vaporization.
  • a cleaning chemical for fin cleaning can be introduced into the water supply pipe 111 connected to the mist spray nozzle 108.
  • the spraying of the mist containing the cleaning agent from the mist spray nozzle 108 may be performed continuously or intermittently.
  • the mist sprayed from the mist spray nozzle 108 has a larger particle size than the mist sprayed from the mist spray nozzles 106 and 107, the mist flows along the fin surface of the heat exchanger 101.
  • the mist sprayed from the mist spray nozzle 108 is cooled by the temperature reduction effect by the mist sprayed from the mist spray nozzles 106 and 107.
  • the cooled mist forms a minimum dew condensation state, adheres to the fin surface of the heat exchanger 101, and cools the fin.
  • the amount of mist sprayed from the mist spray nozzles 106, 107, 108 can be calculated from the outside air temperature and the air volume of the outdoor fan 102 of the outdoor unit 10, and mist particles sprayed from the mist spray nozzles 106, 107.
  • the diameter is a particle size that evaporates at the speed of the wind passing through the opening 104a, and the particle size of the mist sprayed from the mist spray nozzle 108 is a particle size that is difficult to evaporate at the same wind speed, thereby effectively exchanging the heat of cooling. Can be transmitted to the fins of the vessel 101.
  • a drain pipe 113 provided with a drain valve 114 is connected to the water supply pipe 109 connected to the mist spray nozzle 106.
  • This drain valve 114 is turned on when there is a risk of freezing in winter, so that water does not remain in the water supply pipes 109 and 113. Thereby, freezing of the water supply pipes 109 and 113 and the mist spray nozzle 106 in winter can be prevented.
  • the outside air temperature is 35 [° C.]
  • the humidity is 50 [%]
  • the air volume of the outdoor fan in the air-conditioning outdoor unit is 180 [m 3 / min. ]
  • the air temperature is set to 10 [deg. ]
  • the amount of water required for the reduction is 400 [l / hr. It becomes.
  • the amount of water supplied to the mist spray nozzle capable of spraying mist having a particle size of 45 [ ⁇ m] or less is 2.93 [l / hr. ], It is sufficient to install 14 [pieces] mist spray nozzles.
  • the surface wind speed of the fins of the heat exchanger of the air conditioner outdoor unit is 3 [m / sec. ] To 6 [m / sec. ], 1.5 [m / sec. ] To 2.5 [m / sec. Therefore, the opening area of the solar shading hood is halved, and the wind speed of the passing air is doubled.
  • the angles of the mist spray nozzles 106 and 107 arranged by variable copper pipes are the magnitude of the vector due to the wind speed, the ability of the pressure pump for water supply, and the magnitude of the vector ejected from the nozzle shape. Now, the opening surface is adjusted to have a uniform water spray concentration.
  • the air containing saturated water vapor that has passed through the opening of the solar shading hood and the mist that does not evaporate are sprayed vertically downward with a particle size of 300 [ ⁇ m] from the mist spray nozzle 109 when passing through the suction surface of the fin of the heat exchanger. It passes through the surface formed by the mist. At this time, excess mist (water droplets) is discharged vertically downward, and the amount of mist adhering to the fins of the heat exchanger can be quantified.
  • the reusable water is sprayed, and the mist particle size and the wind speed are a simple structure such as a vector. It is possible to effectively reduce the power consumption of the air-conditioning outdoor unit with a minimum amount of water and energy without using exhaust materials. Further, from the viewpoint of easy maintenance, it is possible to effectively suppress deterioration of the heat exchanger and generation of rust in the outdoor unit.
  • the particle size of the mist can be measured using, for example, a laser diffraction particle size measuring device or a Doppler phase particle size measuring device.
  • the present invention is a technique useful for realizing a heat exchange system that can reduce power consumption while preventing deterioration of a heat exchanger and has a low environmental load.
  • Heat exchange system 10. Outdoor unit 20. Indoor unit 31, 32. Refrigerant piping 40. Control unit 101. Heat exchanger 102. Outdoor fan 103. Compressor 104,105. Solar shading hood 106,107,108. Mist spray nozzle 109,110,111. Water supply pipe 112. Water tank 113. Drain pipe 114. Drain valve 201. Heat exchanger 202. Indoor fan

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

A cooling device for an air-conditioning outdoor unit is attached to a heat exchanger (101) of an outdoor unit (10) in a heat exchanging system. The cooling device for the air-conditioning outdoor unit comprises a plurality of mist spraying devices (spraying nozzles (106, 107, 108) illustrated in the drawing) and a sun-shading hood (104). The spraying nozzles (106, 107) provided at the edge portions of an inlet opening (104a) in the sun-shading hood (104) are disposed upstream of the inlet airflow to the heat exchanger and spray mist having a particle size of 45 [μm] or less. Mist particles having a minimum size which are not capable of evaporating transmit cooled heat to fins of the heat exchanger (101), thereby effectively reducing electric power consumption while suppressing corrosion of the fins.

Description

空調室外機冷却装置および熱交換システムAir conditioner outdoor unit cooling device and heat exchange system
　本発明は、空調室外機冷却装置およびこれを備える熱交換システムに関する。 The present invention relates to an air conditioner outdoor unit cooling apparatus and a heat exchange system including the same.
　従来より、空気調和システムとして、ヒートポンプ圧縮機を備える空気熱交換システムが用いられている。この空気調和システムでは、圧縮機と、冷房時に凝縮機として機能する第１の熱交換器（室外機における熱交換器）と、冷房時に蒸発器として機能する第２の熱交換器（室内機における熱交換器）とを、配管で連結し、配管により連結されてなるシステム内を冷媒が循環する構成となっている。 Conventionally, an air heat exchange system including a heat pump compressor has been used as an air conditioning system. In this air conditioning system, a compressor, a first heat exchanger that functions as a condenser during cooling (a heat exchanger in an outdoor unit), and a second heat exchanger that functions as an evaporator during cooling (in an indoor unit) The heat exchanger is connected by piping, and the refrigerant circulates in the system connected by the piping.
　ところで、近年では、地球温暖化の影響により、特に夏季の気温の上昇が顕著となり、また、建物の屋上やアスファルトの上など劣悪な環境のもとに置かれる空調室外機は、熱交換効率の低下を招いている。 By the way, in recent years, due to the effects of global warming, the rise in temperature especially in summer has become remarkable, and air-conditioning outdoor units placed in poor environments such as rooftops of buildings and asphalt have high heat exchange efficiency. It is causing a decline.
　このような問題に対して、例えば、特許文献１では、室外機における熱交換器に対して、水噴霧装置を取り付けておき、必要に応じて室外機の熱交換器に水を噴射するという技術が提案されている。特許文献１では、室外機の熱交換器に対して、水を噴射して、室外機の熱交換器におけるフィンの温度低減を図り、これにより電力負荷の低減を図ることができるとされている。 In order to solve such a problem, for example, in Patent Document 1, a water spray device is attached to a heat exchanger in an outdoor unit, and water is injected into the heat exchanger of the outdoor unit as necessary. Has been proposed. In Patent Document 1, water is jetted to the heat exchanger of the outdoor unit to reduce the temperature of the fins in the heat exchanger of the outdoor unit, thereby reducing the power load. .
特許第３０７３９６６号公報Japanese Patent No. 3073966
　しかしながら、上記特許文献１に提案されている技術では、室外機の熱交換器におけるフィンの錆などによる劣化という問題がある。即ち、噴射した水が熱交換器のフィンに直接当たり、また、熱交換器のフィンを冷却するために大量の水を熱交換器に噴射しなければならないため、熱交換器のフィンが腐食することを避けることができない。 However, the technique proposed in Patent Document 1 has a problem of deterioration due to rust of fins in the heat exchanger of the outdoor unit. That is, the injected water directly hits the heat exchanger fins, and the heat exchanger fins corrode because a large amount of water must be injected into the heat exchanger to cool the heat exchanger fins. I can't avoid that.
　また、上記特許文献１で提案されている技術では、熱交換器のフィンを冷却するためには、大量の水を必要とし、その多くが廃棄されることになるので、この点も環境負荷という観点から問題となる。 In addition, in the technique proposed in Patent Document 1, a large amount of water is required to cool the fins of the heat exchanger, and most of the water is discarded. It becomes a problem from the viewpoint.
　本発明は、上記のような問題の解決を図るべくなされたものであって、熱交換器の劣化を抑制しながら、消費電力の削減ができ、環境負荷の低減を図ることができる空調室外機冷却装置および熱交換システムを提供することを目的とする。 The present invention has been made in order to solve the above-described problems, and is capable of reducing power consumption and reducing environmental load while suppressing deterioration of a heat exchanger. An object is to provide a cooling device and a heat exchange system.
　そこで、本発明は、次の構成を採用する。 Therefore, the present invention adopts the following configuration.
　［１]  空気調和装置における熱交換器に対し付設される空調室外機冷却装置であって、前記熱交換器の吸い込み空気の流れ上流側に配され、４５[μｍ]以下の粒径のミストを噴霧する噴霧ノズルを有するミスト噴霧部を備えていることを特徴とする。 [1] An air conditioner outdoor unit cooling device attached to a heat exchanger in an air conditioner, which is disposed upstream of the suction air flow of the heat exchanger and has a particle size of 45 [μm] or less. A mist spraying section having a spray nozzle for spraying is provided.
　［２]  上記[１]に記載の空調室外機冷却装置であって、前記噴霧ノズルは、前記熱交換器におけるフィンに対して、少なくとも３０[ｃｍ]離間して配されていることを特徴とする。 [2] The air conditioner outdoor unit cooling apparatus according to [1] above, wherein the spray nozzle is arranged at least 30 [cm] away from the fins in the heat exchanger. To do.
　[３]  上記[１]に記載の空調室外機冷却装置であって、前記噴霧ノズルは、そのノズル口が、前記熱交換器におけるフィンが配された領域を除く領域に向く状態（ノズル口がフィンに向かない状態）で配置されていることを特徴とする。 [3] The air conditioner outdoor unit cooling device according to [1] above, wherein the spray nozzle has a nozzle port facing a region excluding a region where the fins are arranged in the heat exchanger (the nozzle port is It is characterized by being arranged in a state not facing the fin).
　[４]  上記[３]に記載の空調室外機冷却装置であって、前記熱交換器を日射から遮蔽し、空気取り入れのための吸い込み口を有する日射遮蔽フードを備え、前記ミスト噴霧部の前記噴霧ノズルは、前記吸い込み口の縁部に設置されていることを特徴とする。 [4] The air conditioner outdoor unit cooling apparatus according to [3], wherein the heat exchanger is shielded from solar radiation, and includes a solar radiation shielding hood having a suction port for taking in air. The spray nozzle is installed at an edge of the suction port.
　[５]  上記[４]に記載の空調室外機冷却装置であって、前記日射遮蔽フードは、アルミ鋼材で構成された枠体と、布からなり、当該枠体に張設された日射遮蔽幕とで構成されていることを特徴とする。ここで、「アルミ鋼材」とは、アルミニウム押出品であって、その表面がアルマイト処理されたものをいう。 [5] The air conditioner outdoor unit cooling apparatus according to [4] above, wherein the solar shading hood includes a frame body made of aluminum steel and a cloth, and the solar shading curtain stretched on the frame body It is comprised by these. Here, “aluminum steel material” refers to an aluminum extruded product whose surface has been anodized.
　[６]  上記[４]に記載の空調室外機冷却装置であって、前記日射遮蔽フードは、前記熱交換器の上端よりも鉛直方向で高い位置に、熱溜りとなる空間を構成していることを特徴とする。 [6] The air conditioner outdoor unit cooling apparatus according to [4], wherein the solar radiation shielding hood forms a space for heat accumulation at a position higher in a vertical direction than an upper end of the heat exchanger. It is characterized by that.
　[７]  上記[４]に記載の空調室外機冷却装置であって、前記日射遮蔽フードの鉛直方向下部には、前記吸い込み口から滴下する水を貯留する貯水槽を備えることを特徴とする。 [7] 空調 The air conditioner outdoor unit cooling device according to [4], wherein a water storage tank for storing water dripped from the suction port is provided at a lower portion in the vertical direction of the solar radiation shielding hood.
　[８]  上記[１]に記載の空調室外機冷却装置であって、前記噴霧ノズルは、空円錐型噴霧ノズルであることを特徴とする。 [8] The air conditioner outdoor unit cooling device according to [1] above, wherein the spray nozzle is an empty conical spray nozzle.
　[９]  上記[１]に記載の空調室外機冷却装置であって、前記噴霧ノズルは、噴霧量の可変が可能な銅管構造を有することを特徴とする。 [9] The air conditioner outdoor unit cooling device according to [1] above, wherein the spray nozzle has a copper tube structure capable of changing a spray amount.
　[１０]  上記[１]に記載の空調室外機冷却装置であって、前記熱交換器の空気吸い込み面の近傍には、前記ミスト噴霧部とは別に、４５[μｍ]を超え、３００[μｍ]以下の粒径のミストを、前記熱交換器に取り込まれる空気に対して噴霧する噴霧ノズルを有する第２ミスト噴霧部を備えることを特徴とする。 [10] The air conditioner outdoor unit cooling apparatus according to [1] above, in the vicinity of the air suction surface of the heat exchanger, exceeding 45 [μm] and 300 [μm, separately from the mist spraying portion A second mist spraying section having a spray nozzle for spraying mist having the following particle diameter with respect to the air taken into the heat exchanger is provided.
　[１１]  上記[１０]に記載の空調室外機冷却装置であって、前記第２ミスト噴霧部における噴霧ノズルは、噴霧されるミストが前記熱交換器の表面に沿って流れるよう設置されていることを特徴とする。 [11] The air conditioner outdoor unit cooling apparatus according to [10], wherein the spray nozzle in the second mist spraying section is installed such that the sprayed mist flows along the surface of the heat exchanger. It is characterized by that.
　[１２]  上記[１１]に記載の空調室外機冷却装置であって、前記第２ミスト噴霧部は、前記熱交換器が備えるフィンを洗浄するための洗浄薬剤を噴霧する機能を有することを特徴とする。 [12] The air conditioner outdoor unit cooling apparatus according to [11], wherein the second mist spraying unit has a function of spraying a cleaning chemical for cleaning fins included in the heat exchanger. And
　[１３]  上記[１２]に記載の空調室外機冷却装置であって、前記第２ミスト噴霧部からは、断続的に前記洗浄薬剤が噴霧されることを特徴とする。 [13] The air conditioner outdoor unit cooling device according to [12], wherein the cleaning chemical is sprayed intermittently from the second mist spraying section.
　[１４]  上記[１０]に記載の空調室外機冷却装置であって、前記ミスト噴霧部および前記第２ミスト噴霧部には、各噴霧ノズルに接続されている給水管に対して、排水バルブがそれぞれ設けられていることを特徴とする。 [14] The air conditioner outdoor unit cooling apparatus according to [10], wherein the mist spraying unit and the second mist spraying unit include a drain valve with respect to a water supply pipe connected to each spray nozzle. Each is provided.
　[１５]  本発明の熱交換システムは、上記[１]から上記[１４]の何れかに記載の空調室外機冷却装置を備えることを特徴とする。 [15] A heat exchange system according to the present invention includes the air conditioner outdoor unit cooling device according to any one of [1] to [14].
　なお、上記において、ミスト噴霧部から噴霧される「ミスト」については、例えば、３０[μｍ]以下の平均粒径と規定することもできる。この場合における「平均粒径」については、ザウター（Ｓａｕｔｅｒ）の平均粒径を用いることができる。具体的には、ミストの粒径をＮi、ミストの粒子数をＸiとするとき、平均粒径Ｘ(ave)は、次式で表すことができる。 In the above description, the “mist” sprayed from the mist spraying section can be defined as an average particle size of 30 [μm] or less, for example. As the “average particle diameter” in this case, the average particle diameter of Sauter can be used. Specifically, when the particle diameter of mist N i, mist particle number and X i, the average particle diameter X (ave) can be expressed by the following equation.
　[数１]  Ｘ(ave)＝ΣＮiＸi 3／ΣＮiＸi 2 [Expression 1] X (ave) = ΣN i X i 3 / ΣN i X i 2
　上記[１]に記載のように、本発明に係る空調室外機冷却装置は、粒径が４５[μｍ]以下のミストを、噴霧するミスト噴霧部を備える。このため、ミスト噴霧部から噴霧されたミストにより、熱交換器のフィンを直接濡らすことなく、熱交換器におけるフィンの腐食を防止しながら、効果的に熱交換器のフィンを冷却することができる。即ち、本発明に係る空調室外機冷却装置では、室外機のファン風量に対して最小のミスト噴霧量で熱交換器におけるフィンの冷却が可能となり、その伝達を蒸散できない最小粒径のミスト粒子がフィンに伝達するので、ミスト噴霧量を大幅に低減しながら熱交換効率の向上を図ることができ、さらに腐食や錆の発生を抑えることができる。 As described in [1] above, the air conditioner outdoor unit cooling device according to the present invention includes a mist spraying section that sprays mist having a particle size of 45 [μm] or less. For this reason, it is possible to effectively cool the fins of the heat exchanger while preventing the corrosion of the fins in the heat exchanger without directly wetting the fins of the heat exchanger by the mist sprayed from the mist spraying section. . That is, in the air conditioner outdoor unit cooling device according to the present invention, the fins in the heat exchanger can be cooled with the minimum amount of mist sprayed with respect to the fan air volume of the outdoor unit, and the mist particles with the minimum particle size that cannot be transpired. Since it is transmitted to the fins, it is possible to improve the heat exchange efficiency while greatly reducing the amount of mist sprayed, and to suppress the occurrence of corrosion and rust.
　従って、本発明に係る空調室外機冷却装置では、熱交換器の劣化を抑制しながら、消費電力の削減ができ、環境負荷の低減を図ることができる。 Therefore, in the air conditioner outdoor unit cooling apparatus according to the present invention, it is possible to reduce power consumption and environmental burden while suppressing deterioration of the heat exchanger.
　また、上記[１５]に記載のように、本発明に係る熱交換システムでは、本発明に係る空調室外機冷却装置を備えるので、上記同様の効果を得ることができる。 Also, as described in [15] above, the heat exchange system according to the present invention includes the air-conditioning outdoor unit cooling device according to the present invention, so that the same effect as described above can be obtained.
　上記[２]に記載のように、噴霧ノズルが、熱交換器におけるフィンに対して、少なくとも３０[ｃｍ]離間して配されているという構成を採用すれば、例えば、気温２５[℃]以上で湿度が６０[％]以下である環境下においては、ミストの殆どが気化して、熱交換器のフィンに付着することを確実に防止できる。 As described in [2] above, if the spray nozzle is arranged at least 30 [cm] away from the fins in the heat exchanger, for example, an air temperature of 25 [° C.] or higher In an environment where the humidity is 60% or less, it is possible to reliably prevent most of the mist from vaporizing and adhering to the fins of the heat exchanger.
　また、上記[３]に記載のように、噴霧ノズルのノズル口が、熱交換器におけるフィンが配された領域を除く領域に向く状態、即ち、ノズル口の延長線上にフィンが存在しないように配置するようにすれば、噴霧されたミストの内、粒径の小さなものだけが進行方向を熱交換器の方へ転換し、粒径の大きなミストは、そのまま直進して鉛直下方へと落下することになる。このため、さらに確実に熱交換器の劣化を防止することができる。 In addition, as described in [3] above, the nozzle port of the spray nozzle faces the region excluding the region where the fins are arranged in the heat exchanger, that is, the fins do not exist on the extended line of the nozzle port. If arranged, only the sprayed mist with small particle size will change the direction of travel to the heat exchanger, and the large particle size mist will go straight down and fall down vertically. It will be. For this reason, deterioration of a heat exchanger can be prevented more reliably.
　また、上記[４]に記載のように、更に日射遮蔽フードを備える構成とすれば、吸い込みに係る空気の流入方向を安定させることができ、ミスト噴霧部から噴霧されたミストによる温度低減効果をさらに効果的に得ることができる。 In addition, as described in [4] above, if the solar radiation hood is further provided, the inflow direction of the air related to the suction can be stabilized, and the temperature reduction effect by the mist sprayed from the mist spraying section can be achieved. It can be obtained more effectively.
　上記[５]に記載のように、アルミ鋼材を用い日射遮蔽フードの枠体を構成するようにすれば、輻射熱が少ないという効果を得ることができる。 As described in [5] above, if an aluminum steel material is used to form the frame of the solar radiation shielding hood, an effect of reducing radiant heat can be obtained.
　また、上記[６]に記載のように、日射遮蔽フードの上部に熱溜りを設けた構成とする場合には、布からなる日射遮蔽幕を有することと相まって、日射遮蔽フードの上部から高温空気の熱が排熱されるため、空調室外機への吸い込み空気の温度を低下させることができる。 In addition, as described in [6] above, in the case where the heat shield is provided on the upper part of the solar shading hood, coupled with the solar shading curtain made of cloth, the hot air is introduced from the upper part of the solar shading hood. Therefore, the temperature of the air sucked into the air conditioner outdoor unit can be reduced.
　また、上記[７]に記載のように、日射遮蔽フードの下部に、貯水槽を設ける構成とすれば、排出された水で蒸散できなかった分についても、空調室外機下部の貯水槽に貯留された水が利用され、室外機接地部分の日射負荷を低減することができる。 In addition, as described in [7] above, if the water storage tank is provided at the lower part of the solar shading hood, the portion that could not be evaporated by the discharged water is stored in the water storage tank below the air conditioner outdoor unit. The used water is utilized, and the solar radiation load on the outdoor unit grounding portion can be reduced.
　また、上記[８]に記載のように、噴霧ノズルを空円錐型噴霧ノズルとすれば、空気に触れるミスト量を安定化することができる。 Also, as described in [8] above, if the spray nozzle is an empty cone spray nozzle, the amount of mist that comes into contact with air can be stabilized.
　また、上記[９]に記載のように、噴霧ノズルを、銅管構造とすれば、気体の流動特性に応じてミスト噴霧量の可変が可能となる。 Also, as described in [9] above, if the spray nozzle has a copper tube structure, the amount of mist spray can be varied according to the gas flow characteristics.
　また、上記[１０]に記載のように、粒径が４５[μｍ]を超え、３００[μｍ]以下であるミストを噴霧する第２ミスト噴霧部を設ける構成とすれば、室外機におけるフィンの洗浄などが可能となり、フィンの腐食や錆の発生を効果的に抑制することができる。特に、上記[１１]に記載のように、第２ミスト噴霧部から噴霧されたミストが、熱交換器の表面に沿って流れ、また、上記[１２]に記載のように、第２ミスト噴霧部から噴霧されるミストに洗浄薬剤を混入させることとすれば、特に効果がある。 Further, as described in [10] above, if the second mist spraying section for spraying mist having a particle size of more than 45 [μm] and 300 [μm] or less is provided, the fins in the outdoor unit Cleaning and the like are possible, and the occurrence of fin corrosion and rust can be effectively suppressed. In particular, as described in [11] above, the mist sprayed from the second mist spraying section flows along the surface of the heat exchanger, and as described in [12] above, the second mist spraying is performed. It is particularly effective if the cleaning chemical is mixed in the mist sprayed from the part.
　また、上記[１４]に記載のように、ミスト噴霧部および第２ミスト噴霧部の各噴霧ノズルに接続されている給水管に対して、排水バルブを設けるようにすれば、冬季における凍結の防止を図ることができる。 Further, as described in [14] above, if a drainage valve is provided for the water supply pipes connected to the spray nozzles of the mist spraying section and the second mist spraying section, freezing can be prevented in winter. Can be achieved.
本発明の実施の形態に係るシステムの概要を示す模式ブロック図である。It is a schematic block diagram which shows the outline | summary of the system which concerns on embodiment of this invention. 室外機１０の構成素示す模式断面図である。FIG. 3 is a schematic cross-sectional view showing components of the outdoor unit 10. 噴霧ノズル１０６およびその周辺部分を示す模式側面図である。It is a schematic side view which shows the spray nozzle 106 and its peripheral part. 湿り空気線図である。It is a wet air diagram.
　以下では、本発明を実施するための最良の形態について、図面に沿って説明する。なお、以下で説明する実施の形態については、本発明の構成上の特徴および当該構成から奏される作用効果を分かりやすく説明するために一例として用いるものであって、本発明は、その本質的な技術的特徴部分を除き、以下の内容に何ら限定を受けるものではない。 Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Note that the embodiment described below is used as an example in order to easily understand the structural features of the present invention and the effects obtained from the configuration, and the present invention is essentially The following contents are not limited at all except for the technical features.
　［実施の形態］
　１．熱交換システム１の概要
　熱交換システム１の概要について、図１を用い説明する。 [Embodiment]
1. Outline of Heat Exchange System 1 An outline of the heat exchange system 1 will be described with reference to FIG.
　図１に示すように、室外機１０と室内機２０とが冷媒配管３１，３２で接続され、これらの制御を行う制御部４０が取り付けられている。室外機１０は、冷房時に凝縮機として機能する熱交換器１０１、室外ファン１０２、および配管３１の冷媒を圧縮する圧縮機１０３を有し構成されている。 As shown in FIG. 1, the outdoor unit 10 and the indoor unit 20 are connected by refrigerant pipes 31 and 32, and a control unit 40 that performs these controls is attached. The outdoor unit 10 includes a heat exchanger 101 that functions as a condenser during cooling, an outdoor fan 102, and a compressor 103 that compresses the refrigerant in the pipe 31.
　室内機２０は、冷房時に蒸発器として機能する熱交換器２０１、および冷風を送り出す室内ファン２０２を有し構成されている。 The indoor unit 20 includes a heat exchanger 201 that functions as an evaporator during cooling, and an indoor fan 202 that sends out cool air.
　熱交換システム１には、上記の他に、ユーザの指示情報および室内および室外の温度・湿度に基づき、室外機１０および室内機２０などを運転制御する制御部４０を備える。 In addition to the above, the heat exchanging system 1 includes a control unit 40 that controls the operation of the outdoor unit 10 and the indoor unit 20 based on user instruction information and indoor and outdoor temperature / humidity.
　２．室外機１０に対して付設されている室外機冷却装置
　本実施の形態に係る熱交換システム１に含まれ、室外機１０に対して付設されている室外機冷却装置の構成について、図２および図３を用い説明する。 2. Outdoor unit cooling device attached to outdoor unit 10 The configuration of an outdoor unit cooling device included in heat exchange system 1 according to the present embodiment and attached to outdoor unit 10 is shown in FIGS. 3 will be described.
　図２に示すように、室外機１０は、側面に形成された熱交換器１０１とその下部に配置された圧縮機１０３、および天部に取り付けられた室外ファン１０２とを有する。そして、この室外機１０に対しては、室外機冷却装置を構成する日射遮蔽フード１０４，１０５が側方に取り付けられ、さらにその一方の日射遮蔽フード１０４内に複数のミスト噴霧ノズル１０６，１０７，１０８が設置されている。 As shown in FIG. 2, the outdoor unit 10 includes a heat exchanger 101 formed on a side surface, a compressor 103 disposed below the heat exchanger 101, and an outdoor fan 102 attached to the top. And with respect to this outdoor unit 10, the solar radiation shielding hoods 104 and 105 which comprise an outdoor unit cooling device are attached to the side, and also in one solar radiation shielding hood 104, a plurality of mist spray nozzles 106, 107, 108 is installed.
　各ミスト噴霧ノズル１０６，１０７，１０８には、水供給用の給水管１０９，１１０，１１１が接続されている。そして、各給水管１０９，１１０，１１１の他端には、高圧ポンプが接続されている（図示を省略）。なお、図示を省略しているが、各ミスト噴射ノズル１０６，１０７，１０８に接続される高圧ポンプなどは、上記制御部４０からに信号に基づき運転される。 Water supply pipes 109, 110, 111 for supplying water are connected to the mist spray nozzles 106, 107, 108, respectively. And the high-pressure pump is connected to the other end of each water supply pipe 109,110,111 (illustration omitted). Although not shown, the high-pressure pumps connected to the mist injection nozzles 106, 107, and 108 are operated based on signals from the control unit 40.
　なお、日射遮蔽フード１０４，１０５の下方には、貯水槽１１２が設置されており、日射遮蔽フード１０４，１０５から落ちてくる水滴を貯留することができる。これにより、日射負荷の防止を図ることが可能となる。 It should be noted that a water storage tank 112 is installed below the solar shading hoods 104 and 105, and water drops falling from the solar shading hoods 104 and 105 can be stored. Thereby, it is possible to prevent the solar radiation load.
　なお、ミスト噴霧ノズル１０６，１０７，１０８は、気体の流動特性に応じて可変可能な銅管構造を採用している。 The mist spray nozzles 106, 107, 108 employ a copper tube structure that can be changed according to the gas flow characteristics.
　日射遮蔽フード１０４，１０５は、アルミ鋼材からなる枠体と、当該枠体に張設されたメッシュ状の遮光布とから構成されている。アルミ鋼材からなる枠体は、輻射熱が少ないという優位性があり、また、遮光布は、日射の影響を６０[％]以上遮蔽するものである。このような構成を有する日射遮蔽フード１０４，１０５は、熱交換器１０１の周囲温度の低下という観点から効果がある。 The solar shading hoods 104 and 105 are composed of a frame body made of an aluminum steel material and a mesh-shaped light shielding cloth stretched on the frame body. The frame body made of aluminum steel has the advantage of low radiant heat, and the light shielding cloth shields the influence of solar radiation by 60 [%] or more. The solar shading hoods 104 and 105 having such a configuration are effective from the viewpoint of lowering the ambient temperature of the heat exchanger 101.
　また、日射遮蔽フード１０４，１０５の開口１０４ａ，１０５ａは、その面積が熱交換器１０１におけるフィンの面積に対して、１／３～１／２に設定されている。このような開口１０４ａ，１０５ａのサイズ設定により、各開口部１０４ａ，１０５ａを通過する空気の流速が速くなり、対して、熱交換器１０１のフィンを通過する空気の流速が１／３～１／２に低減される。 The areas of the openings 104a and 105a of the solar shading hoods 104 and 105 are set to 1/3 to 1/2 of the area of the fins in the heat exchanger 101. By setting the sizes of the openings 104a and 105a, the flow rate of air passing through the openings 104a and 105a is increased. On the other hand, the flow rate of air passing through the fins of the heat exchanger 101 is reduced to 1/3 to 1 /. Reduced to 2.
　日射遮蔽フード１０４の開口１０４ａを臨む縁端部に設置されているミスト噴射ノズル１０６，１０７は、４５[μｍ]以下の粒径のミストを噴霧できるものである。ミスト噴霧ノズル１０６，１０７は、例えば、空円錐型噴霧が可能であり、これにより空気に触れるミスト量を安定化することができる。ミスト噴霧ノズル１０６，１０７として、例えば、ＡＫＩ　Ｊｅｔ（株式会社いけうちの登録商標）などを用いることができる。 The mist injection nozzles 106 and 107 installed at the edge portion facing the opening 104a of the solar shading hood 104 can spray mist having a particle size of 45 [μm] or less. The mist spray nozzles 106 and 107 can perform, for example, an empty cone spray and can stabilize the amount of mist that comes into contact with air. As the mist spray nozzles 106 and 107, for example, AKI Jet (registered trademark of Ikeuchi Co., Ltd.) can be used.
　ミスト噴霧ノズル１０６，１０７は、その各ノズル口が、直接、熱交換器１０１のフィンが配置された領域を除く領域を向くように（フィンの方を向かないように）配され、且つ、フィンとの間隔を少なくとも３０[ｃｍ]あけて配されている。このようにミスト噴霧ノズル１０６，１０７を配置するようにすれば、例えば、気温が２５[℃]以上で、湿度が６０[％]以下の条件下においては、噴霧されたミストがフィンに到達する前に殆ど気化する。 The mist spray nozzles 106 and 107 are arranged so that each nozzle port thereof directly faces a region excluding a region where the fins of the heat exchanger 101 are disposed (so as not to face the fins). And at least 30 [cm] apart from each other. If the mist spray nozzles 106 and 107 are arranged in this manner, for example, the sprayed mist reaches the fins under conditions where the temperature is 25 [° C.] or higher and the humidity is 60 [%] or lower. Vaporize almost before.
　ここで、日射遮蔽フード１０４の開口１０４ａを通過する空気の風速および風量は安定しているので、飽和水蒸気量と同等の微細なミストをミスト噴霧ノズル１０６，１０７から噴霧することにより、外気温に対して温度が５～１５[℃]低下した空気を日射遮蔽フード１０４内に導入することができる。 Here, since the wind speed and the air volume of the air passing through the opening 104a of the solar shading hood 104 are stable, by spraying a fine mist equivalent to the saturated water vapor amount from the mist spray nozzles 106 and 107, the outside air temperature is adjusted. On the other hand, air having a temperature lowered by 5 to 15 [° C.] can be introduced into the solar shading hood 104.
　ミスト噴霧ノズル１０８は、熱交換器１０１のフィンの前面の直上に設置されており、４５[μｍ]を超え、３００[μｍ]以下の粒径のミストを噴霧することができる。このような粒径のミストは、気温が４５[℃]以下、湿度が４０[％]以上、風速６[ｍ／ｍｉｎ．]の条件下では、殆ど気化することがない。 The mist spray nozzle 108 is installed immediately above the front surface of the fin of the heat exchanger 101, and can spray mist having a particle size of more than 45 [μm] and 300 [μm] or less. The mist having such a particle size has an air temperature of 45 [° C.] or less, a humidity of 40 [%] or more, and a wind speed of 6 [m / min. Under the condition of], there is almost no vaporization.
　また、ミスト噴霧ノズル１０８に接続された給水管１１１には、フィン洗浄用の洗浄薬剤を導入することができるようになっている。ミスト噴霧ノズル１０８からの洗浄薬剤を含むミストの噴霧については、連続的に行ってもよいし、断続的に行ってもよい。このように洗浄薬剤を含むミストを噴霧し、これがフィンに付着するようにすることにより、フィンの腐食や錆の発生を抑制することができ、フィンの健常な状態の維持を有効に図ることができる。 Also, a cleaning chemical for fin cleaning can be introduced into the water supply pipe 111 connected to the mist spray nozzle 108. The spraying of the mist containing the cleaning agent from the mist spray nozzle 108 may be performed continuously or intermittently. By spraying the mist containing the cleaning agent and adhering it to the fin in this way, it is possible to suppress the occurrence of corrosion and rust of the fin, and to effectively maintain the healthy state of the fin. it can.
　ミスト噴霧ノズル１０８から噴霧されるミストは、ミスト噴霧ノズル１０６，１０７から噴霧されるミストに比べて粒径が大きいので、熱交換器１０１のフィンの表面に沿って流れる。そして、ミスト噴霧ノズル１０８から噴霧されたミストは、ミスト噴霧ノズル１０６，１０７から噴霧されたミストによる温度低減効果により、冷却されることになる。冷却されたミストは、必要最低限の結露状態を形成し、熱交換器１０１のフィンの表面に付着し、フィンを冷却する。 Since the mist sprayed from the mist spray nozzle 108 has a larger particle size than the mist sprayed from the mist spray nozzles 106 and 107, the mist flows along the fin surface of the heat exchanger 101. The mist sprayed from the mist spray nozzle 108 is cooled by the temperature reduction effect by the mist sprayed from the mist spray nozzles 106 and 107. The cooled mist forms a minimum dew condensation state, adheres to the fin surface of the heat exchanger 101, and cools the fin.
　ミスト噴霧ノズル１０６，１０７，１０８から噴霧されるミスト噴霧量は、外気温と室外機１０の室外ファン１０２の風量より計算が可能であって、ミスト噴霧ノズル１０６，１０７から噴霧されたミストの粒径は、開口１０４ａを通過する風速で蒸散する粒径とし、ミスト噴霧ノズル１０８から噴霧されるミストの粒径は、同じ風速で蒸散し難い粒径とすることにより、有効に冷却熱を熱交換器１０１のフィンに伝達することができる。 The amount of mist sprayed from the mist spray nozzles 106, 107, 108 can be calculated from the outside air temperature and the air volume of the outdoor fan 102 of the outdoor unit 10, and mist particles sprayed from the mist spray nozzles 106, 107. The diameter is a particle size that evaporates at the speed of the wind passing through the opening 104a, and the particle size of the mist sprayed from the mist spray nozzle 108 is a particle size that is difficult to evaporate at the same wind speed, thereby effectively exchanging the heat of cooling. Can be transmitted to the fins of the vessel 101.
　次に、図３に示すように、ミスト噴霧ノズル１０６に接続されている給水管１０９には、排水バルブ１１４が設けられた排水管１１３が接続されている。この排水バルブ１１４は、冬季の凍結の危険がある場合に介状態とされ、給水管１０９，１１３内に水が残留しないようにする。これにより、冬季における給水管１０９，１１３およびミスト噴霧ノズル１０６の凍結を防止できる。 Next, as shown in FIG. 3, a drain pipe 113 provided with a drain valve 114 is connected to the water supply pipe 109 connected to the mist spray nozzle 106. This drain valve 114 is turned on when there is a risk of freezing in winter, so that water does not remain in the water supply pipes 109 and 113. Thereby, freezing of the water supply pipes 109 and 113 and the mist spray nozzle 106 in winter can be prevented.
　なお、図示をしていないが、他の給水管１１０，１１１にも同様の排水バルブが取り付けられている。 In addition, although not shown in figure, the same drain valve is attached also to the other water supply pipes 110 and 111.
　３．消費電力の低減効果
　本実施の形態に係る熱交換システムが奏する消費電力の低減効果について、以下で説明する。 3. Power consumption reduction effect The power consumption reduction effect of the heat exchange system according to the present embodiment will be described below.
　例えば、外気温が３５[℃]、湿度が５０[％]、空調室外機における室外ファンの風量が１８０[ｍ3／ｍｉｎ．]の場合には、空気温度を１０[ｄｅｇ．]低下させるために必要な水量は、図４に示す湿り空気線図より、４００[ｌ／ｈｒ．]となる。この場合、粒径が４５[μｍ]以下のミストを噴霧できるミスト噴霧ノズルへの供給水量を２．９３[ｌ／ｈｒ．]とした場合には、１４[個]のミスト噴霧ノズルを設置すればよいことになる。 For example, the outside air temperature is 35 [° C.], the humidity is 50 [%], and the air volume of the outdoor fan in the air-conditioning outdoor unit is 180 [m 3 / min. ], The air temperature is set to 10 [deg. ] The amount of water required for the reduction is 400 [l / hr. It becomes. In this case, the amount of water supplied to the mist spray nozzle capable of spraying mist having a particle size of 45 [μm] or less is 2.93 [l / hr. ], It is sufficient to install 14 [pieces] mist spray nozzles.
　但し、一般的に空調室外機の室外ファンの定格容量の１／２以下の熱交換器のフィンによる空気抵抗を考慮する場合の風量となるため、必要なミスト噴霧ノズル数は、７[個]となる。 However, since the air volume is generally considered when the air resistance due to the heat exchanger fins is less than 1/2 of the rated capacity of the outdoor fan of the air conditioning outdoor unit, the number of mist spray nozzles required is 7 [pieces] It becomes.
　また、空調室外機の熱交換器のフィンの面風速は、外側で３[ｍ／ｓｅｃ．]～６[ｍ／ｓｅｃ．]、中心部で１．５[ｍ／ｓｅｃ．]～２．５[ｍ／ｓｅｃ．]であるので、日射遮蔽フードの開口面積をその１／２として、通過する空気の風速を２倍とする。このとき、可変可能な銅管により配置されたミスト噴霧ノズル１０６，１０７の角度は、風速によるベクトルの大きさと、水供給用の加圧ポンプの能力と、ノズルの形状から噴出されるベクトルの大きさで、開口面が一様な水噴霧濃度となるように調節する。 Also, the surface wind speed of the fins of the heat exchanger of the air conditioner outdoor unit is 3 [m / sec. ] To 6 [m / sec. ], 1.5 [m / sec. ] To 2.5 [m / sec. Therefore, the opening area of the solar shading hood is halved, and the wind speed of the passing air is doubled. At this time, the angles of the mist spray nozzles 106 and 107 arranged by variable copper pipes are the magnitude of the vector due to the wind speed, the ability of the pressure pump for water supply, and the magnitude of the vector ejected from the nozzle shape. Now, the opening surface is adjusted to have a uniform water spray concentration.
　日射遮蔽フードの開口を通過した飽和水蒸気を含む空気と、蒸散しないミストは、熱交換器のフィンの吸い込み面を通過するとき、ミスト噴霧ノズル１０９から粒径３００[μｍ]で鉛直下向きに噴霧されたミストにより構成された面を通過する。このときに、余分なミスト（水滴）は、鉛直下方へと排出され、熱交換器のフィンに付着するミスト量を定量化することが可能となる。 The air containing saturated water vapor that has passed through the opening of the solar shading hood and the mist that does not evaporate are sprayed vertically downward with a particle size of 300 [μm] from the mist spray nozzle 109 when passing through the suction surface of the fin of the heat exchanger. It passes through the surface formed by the mist. At this time, excess mist (water droplets) is discharged vertically downward, and the amount of mist adhering to the fins of the heat exchanger can be quantified.
　このように、本実施の形態に係る熱交換システムでは、再利用可能な水をその噴霧形態、およびミストの粒径、風速をベクトルというシンプルな構造で、殆どエネルギを消費せずにフィルタなどの排気材を利用せず、最小限の水とエネルギとで、効果的に空調室外機の消費電力削減を実施することができる。また、メンテナンスが容易という観点から、室外機における熱交換器の劣化および錆の発生を効果的に抑制することができる。 As described above, in the heat exchange system according to the present embodiment, the reusable water is sprayed, and the mist particle size and the wind speed are a simple structure such as a vector. It is possible to effectively reduce the power consumption of the air-conditioning outdoor unit with a minimum amount of water and energy without using exhaust materials. Further, from the viewpoint of easy maintenance, it is possible to effectively suppress deterioration of the heat exchanger and generation of rust in the outdoor unit.
　なお、上記において、ミストの粒径については、例えば、レーザ回折粒径測定器やドプラー位相粒径測定器などを用い測定することができる。 In the above, the particle size of the mist can be measured using, for example, a laser diffraction particle size measuring device or a Doppler phase particle size measuring device.
　本発明は、熱交換器の劣化の防止を図りながら、消費電力の低減を図ることができ、環境負荷の小さな熱交換システムを実現するのに有用な技術である。 The present invention is a technique useful for realizing a heat exchange system that can reduce power consumption while preventing deterioration of a heat exchanger and has a low environmental load.
　　１．熱交換システム
　１０．室外機
　２０．室内機
　３１，３２．冷媒配管
　４０．制御部
１０１．熱交換器
１０２．室外ファン
１０３．圧縮機
１０４，１０５．日射遮蔽フード
１０６，１０７，１０８．ミスト噴霧ノズル
１０９，１１０，１１１．給水管
１１２．貯水槽
１１３．排水管
１１４．排水バルブ
２０１．熱交換器
２０２．室内ファン 1. Heat exchange system 10. Outdoor unit 20. Indoor unit 31, 32. Refrigerant piping 40. Control unit 101. Heat exchanger 102. Outdoor fan 103. Compressor 104,105. Solar shading hood 106,107,108. Mist spray nozzle 109,110,111. Water supply pipe 112. Water tank 113. Drain pipe 114. Drain valve 201. Heat exchanger 202. Indoor fan

Claims (15)

  1. 　空気調和装置における熱交換器に対し付設される空調室外機冷却装置であって、
    　前記熱交換器の吸い込み空気の上流側に配され、４５μｍ以下の粒径のミストを噴霧する噴霧ノズルを有するミスト噴霧部を備えている
    　ことを特徴とする空調室外機冷却装置。     An air conditioner outdoor unit cooling device attached to a heat exchanger in an air conditioner,
    An air-conditioning outdoor unit cooling device comprising a mist spraying section that is disposed upstream of the suction air of the heat exchanger and has a spray nozzle that sprays mist having a particle size of 45 μm or less.
  2. 　前記噴霧ノズルは、前記熱交換器におけるフィンに対して、少なくとも３０ｃｍ離間して配されている
    　ことを特徴とする請求項１に記載の空調室外機冷却装置。     The air-conditioning outdoor unit cooling device according to claim 1, wherein the spray nozzle is arranged at least 30 cm apart from the fins in the heat exchanger.
  3. 　前記噴霧ノズルは、そのノズル口が、前記熱交換器におけるフィンが配された領域を除く領域に向く状態で配置されている
    　ことを特徴とする請求項１に記載の空調室外機冷却装置。     2. The air conditioner outdoor unit cooling device according to claim 1, wherein the spray nozzle is disposed in a state where a nozzle port thereof faces a region excluding a region where fins are arranged in the heat exchanger.
  4. 　前記熱交換器を日射から遮蔽し、空気取り入れのための吸い込み口を有する日射遮蔽フードを備え、
    　前記ミスト噴霧部の前記噴霧ノズルは、前記吸い込み口の縁端部に設置されている
    　ことを特徴とする請求項１に記載の空調室外機冷却装置。     The heat exchanger is shielded from solar radiation, and includes a solar radiation shielding hood having a suction port for air intake,
    The air-conditioning outdoor unit cooling device according to claim 1, wherein the spray nozzle of the mist spray unit is installed at an edge of the suction port.
  5. 　前記日射遮蔽フードは、アルミ鋼材で構成された枠体と、布から構成され、当該枠体に張設された日遮蔽幕とで構成されている
    　ことを特徴とする請求項４に記載の空調室外機冷却装置。     5. The air conditioning according to claim 4, wherein the solar shading hood includes a frame body made of an aluminum steel material and a sun shading curtain made of cloth and stretched on the frame body. Outdoor unit cooling device.
  6. 　前記日射遮蔽フードは、前記熱交換器の上端よりも鉛直方向で高い位置に、熱溜りとなる空間を構成している
    　ことを特徴とする請求項４に記載の空調室外機冷却装置。     The air-conditioning outdoor unit cooling device according to claim 4, wherein the solar radiation shielding hood forms a space for heat accumulation at a position higher in a vertical direction than an upper end of the heat exchanger.
  7. 　前記日射遮蔽フードの鉛直方向下部には、前記吸い込み口から滴下する水を貯留する貯水槽を備える
    　ことを特徴とする請求項４に記載の空調室外機冷却装置。     5. The air conditioner outdoor unit cooling device according to claim 4, further comprising a water storage tank that stores water dripping from the suction port at a lower portion in the vertical direction of the solar radiation shielding hood.
  8. 　前記噴霧ノズルは、空円錐型噴霧ノズルである
    　ことを特徴とする請求項１に記載の空調室外機冷却装置。     The air-conditioning outdoor unit cooling device according to claim 1, wherein the spray nozzle is an empty conical spray nozzle.
  9. 　前記噴霧ノズルは、噴霧量の可変が可能な銅管構造を有する
    　ことを特徴とする請求項１に記載の空調室外機冷却装置。     The air-conditioning outdoor unit cooling device according to claim 1, wherein the spray nozzle has a copper tube structure in which a spray amount can be varied.
  10. 　前記熱交換器の空気吸い込み面の鉛直方向上側には、前記ミスト噴霧部とは別に、４５μｍを超え、３００μｍ以下の粒径のミストを、前記熱交換器の吸い込み空気に対して噴霧する噴霧ノズルを有する第２ミスト噴霧部を備える
    　ことを特徴とする請求項１に記載の空調室外機冷却装置。     A spray nozzle for spraying mist having a particle diameter of more than 45 μm and not more than 300 μm against the suction air of the heat exchanger, on the upper side in the vertical direction of the air suction surface of the heat exchanger, separately from the mist spraying section The air conditioner outdoor unit cooling device according to claim 1, further comprising: a second mist spraying unit including
  11. 　前記第２ミスト噴霧部における噴霧ノズルは、噴霧されるミストが前記熱交換器の表面に沿って流れるよう設置されている
    　ことを特徴とする請求項１０に記載の空調室外機冷却装置。     The spraying nozzle in the second mist spraying section is installed such that sprayed mist flows along the surface of the heat exchanger. The air conditioner outdoor unit cooling device according to claim 10.
  12. 　前記第２ミスト噴霧部は、前記熱交換器が備えるフィンを洗浄するための洗浄薬剤を噴霧する機能を有する
    　ことを特徴とする請求項１１に記載の空調室外機冷却装置。     The air conditioner outdoor unit cooling device according to claim 11, wherein the second mist spraying unit has a function of spraying a cleaning chemical for cleaning fins included in the heat exchanger.
  13. 　前記第２ミスト噴霧部からは、断続的に前記洗浄薬剤が噴霧される
    　ことを特徴とする請求項１２に記載の空調室外機冷却装置。     The air conditioner outdoor unit cooling device according to claim 12, wherein the cleaning chemical is sprayed intermittently from the second mist spraying section.
  14. 　前記ミスト噴霧部および前記第２ミスト噴霧部には、各噴霧ノズルに接続されている給水管に対して、排水バルブがそれぞれ設けられている
    　ことを特徴とする請求項１０に記載の空調室外機冷却装置。     The air-conditioning outdoor unit according to claim 10, wherein the mist spraying unit and the second mist spraying unit are each provided with a drain valve for a water supply pipe connected to each spray nozzle. Cooling system.
  15. 　請求項１から請求項１４の何れかに記載の空調室外機冷却装置を備える
    　ことを特徴とする熱交換システム。     A heat exchange system comprising the air conditioner outdoor unit cooling device according to any one of claims 1 to 14.
PCT/JP2010/006548 2010-11-08 2010-11-08 Cooling device for air-conditioning outdoor unit and heat exchanging system WO2012063277A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106931568A (en) * 2017-02-21 2017-07-07 西安工程大学 Photovoltaic drives crow high-pressure spray type cooling system
JP2021092370A (en) * 2019-12-12 2021-06-17 オリオン機械株式会社 Cooling device and cooling method for the same
WO2023199471A1 (en) * 2022-04-14 2023-10-19 三菱電機株式会社 Water sprinkler device

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH024181A (en) * 1988-06-22 1990-01-09 Seijiro Suda Promotion of condensation for cooling medium
JPH1163730A (en) * 1997-08-20 1999-03-05 Sanyo Electric Co Ltd Condenser
JP2002076407A (en) * 2000-08-31 2002-03-15 Toshiba Plant Kensetsu Co Ltd Photovoltaic power generator utilizing outdoor machine of air-conditioner
JP2003294269A (en) * 2002-04-01 2003-10-15 Takasago Thermal Eng Co Ltd Arrangement system of outdoor machine
JP2006162152A (en) * 2004-12-07 2006-06-22 Daikin Ind Ltd Auxiliary cooling system of outdoor machine
JP2007163094A (en) * 2005-12-16 2007-06-28 Samsung Electronics Co Ltd Refrigeration device
JP2007271200A (en) * 2006-03-31 2007-10-18 Chiba Univ Air conditioner
JP2008128500A (en) * 2006-11-16 2008-06-05 Hitachi Plant Technologies Ltd Condenser using fine mist and its control method
JP2008267725A (en) * 2007-04-23 2008-11-06 Mitsubishi Electric Corp Refrigerating cycle device
JP2009243754A (en) * 2008-03-31 2009-10-22 Nohmi Bosai Ltd Auxiliary cooling device for outdoor unit

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH024181A (en) * 1988-06-22 1990-01-09 Seijiro Suda Promotion of condensation for cooling medium
JPH1163730A (en) * 1997-08-20 1999-03-05 Sanyo Electric Co Ltd Condenser
JP2002076407A (en) * 2000-08-31 2002-03-15 Toshiba Plant Kensetsu Co Ltd Photovoltaic power generator utilizing outdoor machine of air-conditioner
JP2003294269A (en) * 2002-04-01 2003-10-15 Takasago Thermal Eng Co Ltd Arrangement system of outdoor machine
JP2006162152A (en) * 2004-12-07 2006-06-22 Daikin Ind Ltd Auxiliary cooling system of outdoor machine
JP2007163094A (en) * 2005-12-16 2007-06-28 Samsung Electronics Co Ltd Refrigeration device
JP2007271200A (en) * 2006-03-31 2007-10-18 Chiba Univ Air conditioner
JP2008128500A (en) * 2006-11-16 2008-06-05 Hitachi Plant Technologies Ltd Condenser using fine mist and its control method
JP2008267725A (en) * 2007-04-23 2008-11-06 Mitsubishi Electric Corp Refrigerating cycle device
JP2009243754A (en) * 2008-03-31 2009-10-22 Nohmi Bosai Ltd Auxiliary cooling device for outdoor unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106931568A (en) * 2017-02-21 2017-07-07 西安工程大学 Photovoltaic drives crow high-pressure spray type cooling system
JP2021092370A (en) * 2019-12-12 2021-06-17 オリオン機械株式会社 Cooling device and cooling method for the same
JP7361375B2 (en) 2019-12-12 2023-10-16 オリオン機械株式会社 Cooling method of cooling device
WO2023199471A1 (en) * 2022-04-14 2023-10-19 三菱電機株式会社 Water sprinkler device
JP7412647B1 (en) 2022-04-14 2024-01-12 三菱電機株式会社 water sprinkler

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