WO2014208410A1 - Air-conditioning system for large-scale space - Google Patents

Air-conditioning system for large-scale space Download PDF

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Publication number
WO2014208410A1
WO2014208410A1 PCT/JP2014/066120 JP2014066120W WO2014208410A1 WO 2014208410 A1 WO2014208410 A1 WO 2014208410A1 JP 2014066120 W JP2014066120 W JP 2014066120W WO 2014208410 A1 WO2014208410 A1 WO 2014208410A1
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Prior art keywords
air
spray nozzle
spray
blower fan
scale space
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PCT/JP2014/066120
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French (fr)
Japanese (ja)
Inventor
毅男 水野
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株式会社いけうち
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Publication of WO2014208410A1 publication Critical patent/WO2014208410A1/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
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/54—Free-cooling systems

Definitions

  • the present invention relates to an air conditioning system for a large-scale space, and more specifically, a large indoor space such as a factory, a gymnasium, a large classroom / dining room / event hall of a facility, a concourse or a waiting area of a station, an entrance / exit of a shopping mall, etc.
  • a large indoor space such as a factory, a gymnasium, a large classroom / dining room / event hall of a facility, a concourse or a waiting area of a station, an entrance / exit of a shopping mall, etc.
  • the open semi-indoor is cooled at high temperatures such as in summer, and humidified in winter when it is dry to provide a comfortable space with energy saving and low cost, and also performs dust control.
  • JP-A-2013-15267 provides a system shown in FIG.
  • the air-conditioning system divides the space up and down on a virtual horizontal plane HL that is assumed to be slightly above the head height of the operator, and the lower side of the virtual horizontal plane is defined as an air-conditioned area Z1 and the upper ceiling surface is defined as a non-air-conditioned area Z2.
  • the external air conditioner 101, the indoor circulation type package type air conditioner 102, and the exhaust fan 103 are installed above the ceiling surface 100, and the air supply duct 105 is connected to the air intake side of the external air conditioner 101 and the air conditioner 102, respectively.
  • 106 are arranged downward on the virtual horizontal plane, and floor radiant cooling is performed by adjusting the air volume so that a low-speed air flow is blown out from the side surfaces and lower ends of the sock ducts 108, 109 leading to the air supply ducts 105, 106 to the air-conditioning zone Z1.
  • Adopted replacement air conditioning system is provided.
  • the replacement air-conditioning system employing the floor radiant cooling using the sock duct of Patent Document 1 is an air-conditioning area within a worker's head height in a large work area dotted with high heat generation sources and workers.
  • Z1 is separated from the upper non-air-conditioned area Z2, and cold air is drawn into the air-conditioned area Z1 from the side surfaces and lower ends of the sock ducts 108 and 109 at a low speed so that the work area is locally covered with cold air.
  • effective cooling is achieved at low cost by cooling only the local area where the worker is in the large space.
  • the present invention has been made in view of the above problems, and can quickly cool a large-scale space such as a factory, can reduce initial costs and running costs, and has a dust control effect that cannot be exhibited by the system of Patent Document 1.
  • the challenge is to provide a large-scale air conditioning system.
  • the present invention provides a blower fan with a spray nozzle in a large-scale space of a building, and the spray nozzle sprays droplets having an average particle diameter of 10 ⁇ m to 50 ⁇ m,
  • the operation of the blower fan with the spray nozzle is performed by mixing the blown air generated from the blower fan with the spray sprayed from the spray nozzle and blowing out the spray, spraying only from the spray nozzle, and blowing only from the blower fan.
  • We offer a large-scale space air conditioning system that is characterized by a selectable configuration.
  • the spray from the spray nozzle is mixed with the blown air blown from the blower fan to form the blown air with the spray, and when the water droplets of mist evaporate in the air
  • the property of depriving the surrounding heat, that is, the air blown out from the blower fan is cooled using the heat of vaporization. It can be installed if there is a power source and tap water, can reduce initial costs and running costs as compared with the case of using an air conditioner, generates almost no exhaust heat, and can sufficiently cope with CO 2 emission regulations. In particular, compared with the case of using an air conditioner, there is an advantage that power consumption can be reduced by 80 to 90% and running cost can be reduced by about 60 to 70%.
  • the cooling effect can be dramatically improved, and it has a dust-reducing action that cannot be achieved with an air conditioner or blower fan, especially in factories, stations, shopping malls, etc. It can be suitably used in a place where dust is easily generated.
  • the spray nozzle sprays ultrafine droplets having an average particle diameter of 10 ⁇ m to 50 ⁇ m, and does not cause the object to get wet. Therefore, the problem of wetting due to water droplet spraying does not occur, the evaporation time of the water droplets of fine particles can be shortened, the wind from the air blowing fan to be mixed can be quickly cooled, and the cool air can be sent. Furthermore, since it is possible to switch to blowing with spray, only spraying, or only blowing, optimal air conditioning can be performed according to environmental conditions.
  • the large-scale space where the blower fan with the spray nozzle is installed has a ceiling height of 3 m or more and an area of 500 m 2 or more, and is a large indoor space consisting of factories, gymnasiums, large classrooms, dining halls, event halls, etc. Or a semi-indoor consisting of a main passage such as a station or a shopping mall or a waiting place, and one or more blower fans with spray nozzles are movably installed in the large-scale space, or spaced at fixed positions. Are preferably installed.
  • the indoor and semi-indoors of the building are both operated to generate the blowing with the spray under the conditions of a temperature of 25 to 45 ° C. and a humidity of 30 to 70%, and when the humidity exceeds 70%, the spraying is stopped and only the blowing is operated. It is preferable that a control means for switching is provided and the air-cooling fan with the spray nozzle is used for cooling.
  • the control means transmits the measured value from the temperature sensor, humidity sensor or temperature / humidity sensor installed in the large-scale space to be installed to the blower fan control unit and the spray control unit, and performs ON-OFF control with preset threshold values, respectively. ing.
  • both the operation of generating the air with spray or the operation of only the spray can be performed and function as a humidifier. preferable.
  • the blower fan with spray nozzle used in the present invention has an air flow rate of 80 to 1,000 m 3 / min, a spray amount of 10 to 100 L / hour, an effective flight distance of 10 m to 50 m, and in the air blowing direction. It is preferable that the temperature drop at a point 10 m away is 4-6 ° C., the temperature drop at a point 20 m away is 2-3 ° C., and the temperature drop at a point 30 m away is 1-2 ° C. . If it is a large fan with an air flow of 300 m 3 / min, it can send air to the front of 50 m, and if it can swing and move as will be described later, it can cool and humidify in a wide range. Become.
  • the ratio of the blowing amount and the spray amount of the blower fan with the spray nozzle is such that the spray amount / the blow amount is 0.5 ⁇ 10 ⁇ 3 to 5.0 ⁇ 10 ⁇ 3 .
  • the blower fan with a spray nozzle of the present invention is inclined upward in the direction of blowing and spraying when the installation height from the floor is less than 2 m, and horizontally and horizontally when the installation height is from 2 m to 2.5 m.
  • the air blowing and spraying directions are inclined downward so that the air blowing and spraying directions are directed to the target person. That is, air conditioning such as cooling and humidification by a blower fan with a spray nozzle is intended for people (workers, visitors, etc.), so spray and blown air from the blower fan with a spray nozzle should be directed toward the person's head. Yes.
  • Patent Document 1 Although there is a cold lump on the floor surface, the feet cool down, but the cool air does not rise and the cool air is hardly transmitted to the human head and upper body, but the cooling effect on the human is low. Then, there is an advantage that the cooling effect for a person is high.
  • the spray nozzle attached to the blower fan has a weight of 30 g or less, preferably 4 g to 20 g, and at least a portion provided with spray holes is preferably formed of alumina.
  • 36 spray nozzles are mounted at equal intervals on the annular outer peripheral frame of a large fan having a diameter of 620 mm with a blast volume of 300 to 350 m 3 / min. As described above, a large number of nozzles are mounted as described above. It is lighter.
  • the blower fan preferably includes a swing mechanism or / and a gantry moving mechanism. If a swing mechanism is provided in the blower fan with a spray nozzle of the present invention in the same manner as a general fan, spraying and blowing can be directed in an arbitrary direction. Furthermore, it is preferable to provide a pedestal moving mechanism so that it can be moved to an arbitrary place, or to install a rail on the upper part so as to be able to reciprocate on the rail so that a wide range of air conditioning can be performed.
  • the spray nozzle attached to the blower fan is a one-fluid type that pressurizes and jets water and a two-fluid type that mixes and jets compressed air and water,
  • a plurality of the outer peripheral frames that surround the rotating blades of the blower fan are attached at intervals to the outer surface side, and the spray nozzle outlets are inclined to the inner peripheral side of the blower fan opening of the blower fan, The spray sprayed from the spray nozzle is mixed with the wind from the blower fan and blown out.
  • An annular pipe with a spray nozzle attached to the outer peripheral frame of the blower fan may be externally fitted, or the blowout side of the outer peripheral frame of the blower fan may be used as a tubular water distribution pipe, and the spray nozzle may be attached to the water distribution pipe .
  • the large-scale space air-conditioning system of the present invention is a mist sprayed from a nozzle that generates air blown from a blower equipped with a spray nozzle in a large-scale space that is difficult to cool by an air conditioner and a semi-indoor where the entrance is open.
  • the water droplets evaporate, the air blown from the blower fan is deprived of heat, and the heat of vaporization is used as cooling air. Therefore, compared with a fan, it can implement
  • FIG. 1 It is a schematic plan view which shows the whole layout in the factory which implements this invention.
  • FIG. 1 is principal part longitudinal cross-sectional view of FIG. 1
  • B is drawing which shows the ventilation containing the spray blown from the ventilation fan with a spray nozzle.
  • A) is explanatory drawing which shows the example of installation of the said ventilation fan with a spray nozzle
  • B) is drawing which shows the ventilation containing the spray blown from the ventilation fan with a spray nozzle arranged in parallel.
  • FIG. 4 is a side view. It is a front view which shows arrangement
  • the air conditioning system of the large-scale space of the embodiment cools and humidifies the inside of a large factory 50 having a ceiling height of about 3 m to 6 m and a horizontal sectional area of about 4000 m 2 shown in FIG. It also acts.
  • each of the cooling / humidification areas A to G is provided with a blower fan 1 with a spray nozzle as shown in FIGS. 4 to 6, and the blower fan 1 with a spray nozzle is installed according to the density and movement of the target worker. It is installed as fixed, automatically reciprocating, or moved by workers. In addition, the installed blower fan with spray nozzle is changed to large, medium and small.
  • a blower fan 1 with a spray nozzle is installed on a frame FR mounted at the upper part of the factory (at a height of about 3 m) with a required interval through the mount 3. is doing.
  • the blower fan 1 with a spray nozzle is set so that the blowing and spraying directions are inclined downward, and the blowing and spraying are sprayed toward the worker.
  • each of the blower fans 1 with spray nozzles is moved through the gantry 3 so as to automatically reciprocate to the guide rail GR provided on the upper part. Attached.
  • the blower fan 1 with the spray nozzle is installed on the upper part, so that the blow and spray directions are inclined downward, and the blow and spray are set to be sprayed toward the worker.
  • the blower fan 1 with the spray nozzle is mounted on the single movable carriage 4 and arranged. Can be moved to any position. Since the blower fan 1 with the spray nozzle on the movable carriage 4 is at a position of about 1 m with an installation height from the floor surface of less than 2 m, the blowing and spraying directions are inclined upward, and the blowing and spraying are spread toward the workers. It is set to be done.
  • blowing and spraying directions are set substantially horizontally and horizontally, and the blowing and spraying are spread toward the workers. It is set to be done.
  • the cooling / humidification area E is an area where a large number of workers are working at a fixed position. Therefore, as shown in FIG. 7, the blower fan 1 with a spray nozzle is mounted on the fixed base 6 fixed on the floor surface F, and is arranged at intervals. Since these blower fans 1 with a spray nozzle have an installation height of 1 m, the blowing and jetting directions are inclined upward toward the head of the worker.
  • a blower fan with a spray nozzle is mounted on two fixed mounts placed on the floor as in the area E. 1 is installed and arranged at intervals. Since these blower fans 1 with a spray nozzle have an installation height of 2 m, the air blowing and jetting directions are set to be substantially horizontal laterally in the direction of the operator's head.
  • the blower fan 1 with a spray nozzle used in the present invention has a blown amount of 80 to 1,000 m 3 / min and a spray amount of 10 to 100 L / hr.
  • the ratio of the air blowing amount and the spraying amount is controlled so that the spray amount / the air blowing amount is in the range of 0.5 ⁇ 10 ⁇ 3 to 5.0 ⁇ 10 ⁇ 3 .
  • the blower fan 1 with a spray nozzle has an effective flying distance S shown in FIG.
  • the blower fan 1 with a spray nozzle uses the blower fan 1 with a spray nozzle made into the same shape shown in FIG.4, FIG.5 and FIG.6.
  • the blower fan 1 with the spray nozzle has an annular water supply pipe 23 attached to the outer periphery of the blowout opening 13 of the cylindrical case 12 surrounding the rotary blade 11 of the blower fan 10, and a plurality of spray nozzles are attached to the annular water supply pipe 23. 20 are attached at equal intervals.
  • each spray nozzle 20 is arranged such that the injection port 21 is inclined to the inner peripheral side of the air blowing opening 13, and the spray injected from the injection port 21 is blown from the air blowing fan 10. As a mixed fluid, it is scattered.
  • the diameter of the blower fan 10 is 700 mm, and 36 spray nozzles 20 are attached to the outer periphery of the blower fan at equal intervals.
  • the blower fan 1 with a spray nozzle is pivotally attached to both side frames of a U-shaped holding frame 15 on a cylindrical case 12 and rotates a handle 16 fixed to the shaft.
  • the elevation angle is adjusted, and the blowing and spraying directions are adjusted upward, downward, and horizontally according to the installation height as described above.
  • a swing switch 17, a swing motor 18, and a blower ON / OFF switch 19 are installed on the support base 14 connected to the lower frame 15 a of the holding frame 15.
  • the unit of the blower fan 1 with a spray nozzle having the above-described configuration is arranged at the upper portion as shown in FIG. 3, it is mounted on the gantry 3 and the gantry 3 is suspended and fixed to the upper frame.
  • the blower fan 1 with the spray nozzle is mounted on a movable carriage 4 as shown in FIG. 5, and is further mounted on a fixed base 6 fixed on the floor surface F as shown in FIG.
  • Tap water is supplied to the spray nozzle 20 from an annular water supply pipe 23, and as shown in FIG. 3, a pipe 30 (made of metal or resin when the blower fan with the spray nozzle is fixed) is connected to the water supply pipe 23.
  • a pipe or a rubber hose in the case of movement) is connected, and the pipe 30 is connected to a pump unit 32 connected to a water pipe via an electromagnetic on-off valve 31.
  • the electromagnetic on-off valve 31 is controlled by a spray control unit 25 that controls temperature and humidity.
  • the spray control unit 25 receives measured values from temperature / humidity meters 38 (shown in FIGS. 1 and 7) installed in the cooling / humidification areas A to F to which the blower fan 1 with a spray nozzle is attached, and the temperature and humidity.
  • the fan control unit 26 is installed together with the spray control unit 25, the measured value is transmitted from the thermohygrometer 38 to the fan control unit 26, and the blower fan 10 is turned on in comparison with a preset threshold value. OFF control is performed.
  • the spray nozzle 20 has a structure shown in FIG. 8 of a single fluid type that pressurizes and jets water.
  • the spray nozzle 20 has a weight of 30 g or less, and preferably 4 to 20 g.
  • the spray nozzle 20 the nozzle presented in Japanese Patent Application Laid-Open No. 2008-104929, which is a prior application of the present applicant, is used. It consists of a cylindrical main body 32 and a nozzle tip 33 fixed to the inner surface of the injection side wall 32b of the main body 32, and the nozzle tip is made of alumina.
  • one end of a cylindrical peripheral wall 32a is closed by an injection side wall 32b, and a hole 32c is provided at the center thereof, while the other end of the peripheral wall 32a is an opening 32d, and the opening 32d communicates with the pipe 23, It flows into the hollow portion 32e.
  • the nozzle tip 33 has a generally disk shape, is molded when the main body 32 is molded, and is fixed to the inner surface of the injection side wall 32 b of the main body 32.
  • the nozzle tip 33 is provided with an injection hole 33a in the center and is configured to inject water from the injection hole 33a as a mist.
  • the injection hole 33a includes a tapered hole portion 33a-1 that is reduced in diameter from the inflow side and a small diameter hole portion 33a-2 that is continuous with the tapered hole portion 33a-1 and communicates with the hole 32c. As shown in FIG.
  • turning grooves 33b that are curved in an arc shape with an interval of 90 degrees, and the inner peripheral ends of these turning grooves 33b are tapered holes 33a- 1 is communicated with the peripheral edge of 1, and is configured to flow while turning water through the turning groove 33 b.
  • the water flowing from the water supply pipe 23 into the main body 32 passes through the swivel groove 33 b of the nozzle tip 33 on the jet side and flows into the tapered hole 33 a-1 of the spray hole 33 a as a swirl flow. To do. In the tapered hole portion 33a-1, collision occurs while turning along the inner peripheral surface of the hole portion, so that water droplets are made finer. A semi-dry fog containing water droplets of fine particles of 10 to 30 ⁇ m flows from the tapered hole 33a-1 into the small-diameter hole 33a-2 on the injection side, and further, from the nozzle 32c of the communicating main body 32.
  • a spray nozzle having a check valve provided in Japanese Patent No. 5118410 of the present applicant may be used.
  • a two-fluid type spray nozzle that mixes and jets compressed air and water may be used.
  • the spray control unit 25 and the fan control unit 26 generate spray from the spray nozzle 20 at a temperature of 25 to 45 ° C. and a humidity of 30 to 70% as measured by a thermohygrometer 38 in summer and the like, and a blower fan 10 is turned on, and it sets to the double operation which generate
  • spraying is stopped and only air blowing is switched.
  • both operations are performed to generate the air flow with the spray under conditions where the temperature is 20 ° C. or higher and the relative humidity is less than 40%. Only the spray nozzle 20 may be operated and function as a humidifier. Furthermore, if the warm air can be obtained at low cost by waste heat, the warm air may be blown from the blower fan 10 in winter.
  • the average particle size of the water droplets sprayed from the spray nozzle 20 is 10 to 50 ⁇ m, preferably 10 to 30 ⁇ m, with a semi-dry fog spray. Since the spray is inclined toward the blower side, the water droplets blown from the blower outlet opening 13 are mixed with the air blown from the blower fan, and the water droplets take away the heat of the surrounding air and evaporate. Let cool air. The cold air is scattered as shown in FIGS. 2B and 3B, and the scattering distance is about 10 to 50 m. In the blower fan 1 with the spray nozzle of the present embodiment, as shown in FIG. 3B. 20m will be scattered. Since the cold air is directed to the worker, the area where the worker is present can be efficiently cooled.
  • the temperature drop at a point 10 m away in the blowing direction is 4 to 6 ° C.
  • the point at 20 m away the temperature drop is 2 to 3 ° C.
  • the point 30 m away The temperature drop was 1-2 ° C.
  • FIG. 9 shows a graph in which the temperature inside the area, the temperature outside the area of the factory, and the outdoor temperature are measured in the factory cooled using the blower fan with the spray nozzle.
  • Spraying is started from 13:00 and spraying is stopped at 16:00.
  • the temperature of the area could be reduced by 4 ° C. compared to the temperature outside the area after 5 minutes from 13:00 of the start of spraying, and could be reduced by an average of 3 ° C.
  • spraying was stopped at 16:00, the temperature returned to the same temperature as the outside temperature after 15 minutes.
  • the spray nozzle is attached to the blower fan, the spray from the spray nozzle is mixed with the blown air drawn from the blower fan, and the air is blown by the heat of vaporization of the water droplets of the spray. Cool and efficiently cool. Since this cold air is efficiently blown toward the worker, even in a large-scale space, cooling can be achieved without waste and at low cost.
  • the present invention is not limited to the above embodiment, and can be used in various forms without departing from the gist of the present invention.

Abstract

In order to easily, inexpensively, and efficiently cool a large-scale space such as the inside of a factory, an air blowing fan with a spray nozzle is installed in a large-scale space of a building, the spray nozzle sprays liquid drops with a mean particle diameter of 10-50 μm, and the operation of the air blowing fan with the spray nozzle is configured to be selectable from air blowing with spraying in which air blown from the air blowing fan and spray injected from the spray nozzle are mixed and blown out, only spraying from the spray nozzle, or only air blowing from the air blowing fan.

Description

大規模空間の空調システムLarge-scale air conditioning system
　本発明は大規模空間の空調システムに関し、詳しくは、工場、体育館、施設の大教室・大食堂・イベントホール等の屋内の大規模空間、駅のコンコースや待ち合い場所、ショッピングモール等の出入口が開放されている半屋内を、夏季等の高温時には冷房し、乾燥する冬季等には加湿して快適空間を省エネルギーで低コストに実現し、さらに、鎮埃も行うものである。 The present invention relates to an air conditioning system for a large-scale space, and more specifically, a large indoor space such as a factory, a gymnasium, a large classroom / dining room / event hall of a facility, a concourse or a waiting area of a station, an entrance / exit of a shopping mall, etc. The open semi-indoor is cooled at high temperatures such as in summer, and humidified in winter when it is dry to provide a comfortable space with energy saving and low cost, and also performs dust control.
　前記大規模空間を有する屋内や前記半屋内では、汎用されている空調機（所謂エアコン）や冷房機を作動しても有効な冷房等の空調が行えない問題がある。これは大規模工場では天井高さが４ｍ以上あり、高温の空気が天井近くに溜まり、この天井近くの空気を冷却することは困難であることに因る。かつ、工場等では作業工程で熱が発生する場合も多く、空調しても有効に温度を低下できない問題もある。これらの悪条件下で大規模空間を従来の空調機で冷房しようとすると、多数の高出力の空調機を設置して稼動する必要があり、初期コストおよびランニングコストが非常に高くつく問題がある。よって、大規模工場等では空調が行われていない場合が殆どであり、夏季等の高温多湿の悪環境下で作業能率の低下や作業者の健康保持に問題がある。 In the indoor or semi-indoor having the large-scale space, there is a problem that effective air conditioning such as cooling cannot be performed even if a general-purpose air conditioner (so-called air conditioner) or air conditioner is operated. This is because a large factory has a ceiling height of 4 m or more, high-temperature air accumulates near the ceiling, and it is difficult to cool the air near the ceiling. In addition, there are many cases where heat is generated in a work process in a factory or the like, and there is a problem that the temperature cannot be lowered effectively even if air conditioning is performed. When trying to cool a large-scale space with a conventional air conditioner under these adverse conditions, it is necessary to install and operate a large number of high-power air conditioners, and there is a problem that the initial cost and running cost are very high. . Therefore, in most large-scale factories and the like, air conditioning is not performed in most cases, and there is a problem in work efficiency deterioration and maintenance of worker's health in a hot and humid environment such as summer.
　この種の工場等の大規模空間の空調システムとして、特開２０１３－１５２６７号公報で、図１０に示すシステムが提供されている。該空調システムは作業者の頭部高さよりもやや上方に仮定する仮想水平面ＨＬで空間を上下に分割し、該仮想水平面より下側を空調域Ｚ１、上側の天井面までを非空調域Ｚ２として設定し、天井面１００より上に外調機１０１と室内循環式パッケージ型の空調機１０２、排気ファン１０３を設置し、該外調機１０１と空調機１０２の吸気側にそれぞれ通じる給気ダクト１０５、１０６を前記仮想水平面に下向きに配置し、かつ、前記給気ダクト１０５、１０６に通じるソックダクト１０８、１０９の側面および下端から空調域Ｚ１に低速気流を吹き出すように風量を調整した床放射冷却を採用した置換空調システムが提供されている。 As an air conditioning system for a large-scale space such as a factory of this kind, JP-A-2013-15267 provides a system shown in FIG. The air-conditioning system divides the space up and down on a virtual horizontal plane HL that is assumed to be slightly above the head height of the operator, and the lower side of the virtual horizontal plane is defined as an air-conditioned area Z1 and the upper ceiling surface is defined as a non-air-conditioned area Z2. The external air conditioner 101, the indoor circulation type package type air conditioner 102, and the exhaust fan 103 are installed above the ceiling surface 100, and the air supply duct 105 is connected to the air intake side of the external air conditioner 101 and the air conditioner 102, respectively. , 106 are arranged downward on the virtual horizontal plane, and floor radiant cooling is performed by adjusting the air volume so that a low-speed air flow is blown out from the side surfaces and lower ends of the sock ducts 108, 109 leading to the air supply ducts 105, 106 to the air-conditioning zone Z1. Adopted replacement air conditioning system is provided.
　前記特許文献１のソックダクトを用いた床放射冷房を採用した置換空調システムは、高発熱の発熱源や作業者が点在する大空間の作業域において、作業者の頭部高さ以内を空調域Ｚ１として上部の非空調域Ｚ２と分離し、空調域Ｚ１にソックダクト１０８、１０９の側面および下端から冷気を低速で引き出して、作業域を局部的に冷気で覆うようにしている。このように、大空間を作業員がいる局部だけを冷却することで低コストで有効な冷房を図るものとしている。 The replacement air-conditioning system employing the floor radiant cooling using the sock duct of Patent Document 1 is an air-conditioning area within a worker's head height in a large work area dotted with high heat generation sources and workers. Z1 is separated from the upper non-air-conditioned area Z2, and cold air is drawn into the air-conditioned area Z1 from the side surfaces and lower ends of the sock ducts 108 and 109 at a low speed so that the work area is locally covered with cold air. In this way, effective cooling is achieved at low cost by cooling only the local area where the worker is in the large space.
特開２０１３－１５２６７号公報JP 2013-15267 A
　しかしながら、特許文献１の空調システムでは、天井から作業員の頭上の仮想水平面ＨＬまで、天井上に設置した外気冷房系統の外調器１０１および室内冷房系統の空調機１０２に連結した吸気ダクト１０５、１０６を下向きに垂設し、その下端にそれぞれソックダクト１０８、１０９を取り付ける必要があり、設備コストがかかる問題がある。かつ、ソックダクトから吹き出す低速の冷気は「にじみ出し気流」であるため、冷気の広がりは局部的であり、作業員がいる箇所ごとにソックダクトの設置が必要であり、この点からも設備コストがかかる問題がある。特に、冷気だけを吹き出して冷房するため、雰囲気温度が高い場合、所要の温度に低下させるまでに時間がかかり、迅速な温度低下を実現することは困難である。 However, in the air conditioning system of Patent Document 1, from the ceiling to the virtual horizontal plane HL above the worker, an intake duct 105 connected to the external air conditioner 101 of the outdoor air cooling system and the air conditioner 102 of the indoor cooling system installed on the ceiling, There is a problem that equipment cost is required because the sock ducts 108 and 109 need to be respectively attached to the lower ends of the pipes 106 that are suspended downward. In addition, since the low-speed cold air blown out from the sock duct is a "bleed-out airflow", the spread of the cold air is local, and it is necessary to install a sock duct at each place where workers are present, which also requires equipment costs There's a problem. In particular, since only the cool air is blown out for cooling, when the ambient temperature is high, it takes time until the temperature is lowered to a required temperature, and it is difficult to realize a rapid temperature drop.
　本発明は前記問題に鑑みてなされたもので、工場等の大規模空間を迅速に冷房できるとともに、初期コストおよびランニングコストを低減でき、さらに、特許文献１のシステムでは発揮できない鎮埃作用も有する大規模空間の空調システムを提供することを課題としている。 The present invention has been made in view of the above problems, and can quickly cool a large-scale space such as a factory, can reduce initial costs and running costs, and has a dust control effect that cannot be exhibited by the system of Patent Document 1. The challenge is to provide a large-scale air conditioning system.
　前記課題を解決するため、本発明は、建造物の大規模空間にスプレーノズル付きの送風ファンを設置し、前記スプレーノズルは平均粒子径１０μｍ～５０μｍの液滴を噴霧するものとし、
　前記スプレーノズル付きの送風ファンの稼動は、該送風ファンから発生する送風にスプレーノズルから噴射する噴霧を混合して吹き出す噴霧付き送風、前記スプレーノズルからの噴霧のみ、前記送風ファンからの送風のみを選択できる構成としていることを特徴とする大規模空間の空調システムを提供している。 In order to solve the above-mentioned problems, the present invention provides a blower fan with a spray nozzle in a large-scale space of a building, and the spray nozzle sprays droplets having an average particle diameter of 10 μm to 50 μm,
The operation of the blower fan with the spray nozzle is performed by mixing the blown air generated from the blower fan with the spray sprayed from the spray nozzle and blowing out the spray, spraying only from the spray nozzle, and blowing only from the blower fan. We offer a large-scale space air conditioning system that is characterized by a selectable configuration.
　本発明では、空調機から冷風を吹き出して空間を冷却するのではなく、スプレーノズルからの噴霧を送風ファンから吹き出す送風と混合して噴霧付き送風とし、霧の水滴が空気中で蒸発する際に周囲の熱を奪う性質、即ち、気化熱を利用して送風ファンから吹き出す空気を冷却している。電源と水道水があれば設置でき、エアコンを使用する場合に比較して初期コストおよびランニングコストの低下が図れ、かつ排熱を殆ど出さず、ＣＯ2排出規制にも十分に対応できる。特に、エアコンを使用する場合と比較して、消費電力を８０～９０％、ランニングコストも約６０～７０％低減できる利点がある。
　一方、送風ファンのみを使用する場合と比較して、冷却効果を飛躍的に高めることが出来るとともに、空調機や送風ファンでは奏しえない鎮埃作用を備え、特に、工場や駅、ショッピングモール等の埃が発生しやすい箇所に好適に用いることができる。
　また、スプレーノズルは平均粒子径１０μｍ～５０μｍの超微粒の液滴を噴霧し、対象物に濡れを発生させない。よって、水滴噴霧による濡れの問題は発生せず、かつ、微粒子の水滴の蒸発時間を短くでき、混合する送風ファンからの風を迅速に冷却でき、冷風を送ることができる。
　さらに、噴霧付き送風、噴霧のみ、あるいは送風のみに切り替え可能としているため、環境条件に応じて最適な空調を行うことができる。 In the present invention, when the air is not blown out from the air conditioner to cool the space, the spray from the spray nozzle is mixed with the blown air blown from the blower fan to form the blown air with the spray, and when the water droplets of mist evaporate in the air The property of depriving the surrounding heat, that is, the air blown out from the blower fan is cooled using the heat of vaporization. It can be installed if there is a power source and tap water, can reduce initial costs and running costs as compared with the case of using an air conditioner, generates almost no exhaust heat, and can sufficiently cope with CO 2 emission regulations. In particular, compared with the case of using an air conditioner, there is an advantage that power consumption can be reduced by 80 to 90% and running cost can be reduced by about 60 to 70%.
On the other hand, compared with the case of using only a blower fan, the cooling effect can be dramatically improved, and it has a dust-reducing action that cannot be achieved with an air conditioner or blower fan, especially in factories, stations, shopping malls, etc. It can be suitably used in a place where dust is easily generated.
Further, the spray nozzle sprays ultrafine droplets having an average particle diameter of 10 μm to 50 μm, and does not cause the object to get wet. Therefore, the problem of wetting due to water droplet spraying does not occur, the evaporation time of the water droplets of fine particles can be shortened, the wind from the air blowing fan to be mixed can be quickly cooled, and the cool air can be sent.
Furthermore, since it is possible to switch to blowing with spray, only spraying, or only blowing, optimal air conditioning can be performed according to environmental conditions.
　前記スプレーノズル付き送風ファンを設置する前記大規模空間は天井高さが３ｍ以上、面積５００ｍ2以上であり、工場、体育館、施設の大教室・大食堂・イベントホール等からなる屋内の大規模空間、あるいは駅、ショッピングモール等の主通路あるいは待ち合い場所等からなる半屋内であり、該大規模空間に、１以上の前記スプレーノズル付き送風ファンを移動自在に設置し、または定位置に間隔をあけて設置していることが好ましい。 The large-scale space where the blower fan with the spray nozzle is installed has a ceiling height of 3 m or more and an area of 500 m 2 or more, and is a large indoor space consisting of factories, gymnasiums, large classrooms, dining halls, event halls, etc. Or a semi-indoor consisting of a main passage such as a station or a shopping mall or a waiting place, and one or more blower fans with spray nozzles are movably installed in the large-scale space, or spaced at fixed positions. Are preferably installed.
　前記建造物の屋内および半屋内が、温度２５～４５℃且つ湿度３０～７０％の条件下で前記噴霧付き送風を発生する両稼動とし、湿度７０％を超過すると噴霧停止して送風のみ稼働に切り替える制御手段を備え、前記スプレーノズル付き送風ファンで冷房する構成としていることが好ましい。 The indoor and semi-indoors of the building are both operated to generate the blowing with the spray under the conditions of a temperature of 25 to 45 ° C. and a humidity of 30 to 70%, and when the humidity exceeds 70%, the spraying is stopped and only the blowing is operated. It is preferable that a control means for switching is provided and the air-cooling fan with the spray nozzle is used for cooling.
　前記制御手段は、設置する大規模空間に設置する温度センサ、湿度センサあるいは温湿度センサからの測定値を送風ファン制御ユニットおよび噴霧制御ユニットに送信し、それぞれ予め設定した閾値でＯＮ－ＯＦＦ制御している。 The control means transmits the measured value from the temperature sensor, humidity sensor or temperature / humidity sensor installed in the large-scale space to be installed to the blower fan control unit and the spray control unit, and performs ON-OFF control with preset threshold values, respectively. ing.
　一方、前記建造物の屋内または半屋内の温度が２０℃以上で相対湿度４０％未満の条件下で、前記噴霧付き送風を発生する両稼動または前記噴霧のみ稼動とし、加湿器として機能させることが好ましい。 On the other hand, under the condition that the indoor or semi-indoor temperature of the building is 20 ° C. or higher and the relative humidity is less than 40%, both the operation of generating the air with spray or the operation of only the spray can be performed and function as a humidifier. preferable.
　本発明で用いる前記スプレーノズル付き送風ファンは、１台あたりの送風量が８０～１，０００ｍ３／分、噴霧量が１０～１００Ｌ／時間であり、有効飛距離が１０ｍ～５０ｍ、送風方向に１０ｍ離れた地点の温度低下が４～６℃、２０ｍ離れた地点の温度低下が２～３℃、３０ｍ離れた地点の温度低下が1～２℃温度の冷房能力を有するものとすることが好ましい。
　送風量が３００ｍ3／分の大型の送風ファンであれば、５０ｍ前方まで送風を送ることができ、さらに、後述するように首振りおよび移動自在とすると、広範囲での冷房、加湿、が可能となる。 The blower fan with spray nozzle used in the present invention has an air flow rate of 80 to 1,000 m 3 / min, a spray amount of 10 to 100 L / hour, an effective flight distance of 10 m to 50 m, and in the air blowing direction. It is preferable that the temperature drop at a point 10 m away is 4-6 ° C., the temperature drop at a point 20 m away is 2-3 ° C., and the temperature drop at a point 30 m away is 1-2 ° C. .
If it is a large fan with an air flow of 300 m 3 / min, it can send air to the front of 50 m, and if it can swing and move as will be described later, it can cool and humidify in a wide range. Become.
　また、前記スプレーノズル付き送風ファンの送風量と噴霧量の比を、噴霧量／送風量が０．５×１０-3～５．０×１０-3としていることが好ましい。 Further, it is preferable that the ratio of the blowing amount and the spray amount of the blower fan with the spray nozzle is such that the spray amount / the blow amount is 0.5 × 10 −3 to 5.0 × 10 −3 .
　本発明のスプレーノズル付き送風ファンは、床面からの設置高さが２ｍ未満までは送風および噴霧方向を上向き傾斜、設置高さが２ｍ～２．５ｍでは送風および噴霧方向を水平横向き、設置高さが２．５ｍを超えると送風および噴霧方向を下向き傾斜とし、対象とする人間に送風および噴霧方向が向けられるようにすることが好ましい。
　即ち、スプレーノズル付き送風ファンによる冷房、加湿等の空調は、人（作業員、来客等）を対象とするため、スプレーノズル付き送風ファンからの噴霧及び送風は人の頭部に向かうようにしている。このように、高さ２ｍ以上の上部空間を空調対象から外し、対象とする人に対して快適空間を迅速に形成できるようにしている。これに対して、前記特許文献１では床面に冷塊があるため足元は冷えるが、冷気は上昇せず、人の頭部や上半身に冷気は伝わりにくく人に対する冷房効果が低いが、本発明では人に対する冷房効果が高い利点がある。 The blower fan with a spray nozzle of the present invention is inclined upward in the direction of blowing and spraying when the installation height from the floor is less than 2 m, and horizontally and horizontally when the installation height is from 2 m to 2.5 m. When the length exceeds 2.5 m, it is preferable that the air blowing and spraying directions are inclined downward so that the air blowing and spraying directions are directed to the target person.
That is, air conditioning such as cooling and humidification by a blower fan with a spray nozzle is intended for people (workers, visitors, etc.), so spray and blown air from the blower fan with a spray nozzle should be directed toward the person's head. Yes. In this way, the upper space having a height of 2 m or more is excluded from the air conditioning target, and a comfortable space can be quickly formed for the target person. On the other hand, in Patent Document 1, although there is a cold lump on the floor surface, the feet cool down, but the cool air does not rise and the cool air is hardly transmitted to the human head and upper body, but the cooling effect on the human is low. Then, there is an advantage that the cooling effect for a person is high.
　前記送風ファンに取り付けるスプレーノズルは、重量が３０ｇ以下、好ましくは４ｇ～２０gであり、少なくとも噴霧孔を設けた部分をアルミナで形成していることが好ましい。
　例えば、送風量が３００～３５０ｍ3／分の直径６２０ｍｍの大型ファンの円環状外周枠に３６個のスプレーノズルを等間隔で取り付けており、このように多数のノズルを取り付けるために前記のように軽量化している。 The spray nozzle attached to the blower fan has a weight of 30 g or less, preferably 4 g to 20 g, and at least a portion provided with spray holes is preferably formed of alumina.
For example, 36 spray nozzles are mounted at equal intervals on the annular outer peripheral frame of a large fan having a diameter of 620 mm with a blast volume of 300 to 350 m 3 / min. As described above, a large number of nozzles are mounted as described above. It is lighter.
　前記送風ファンは首振り機構あるいは／および架台移動機構を備えていることが好ましい。
　本発明のスプレーノズル付き送風ファンに、一般の扇風機と同様に首振り機構を設けると、任意の方向に噴霧および送風を向けることができる。さらに、架台移動機構を設けて任意の場所へ移動できるようにし、あるいは、レールを上部に架設し、該レール上を往復移動できるようにし、広範囲の空調を行えるようにすることが好ましい。 The blower fan preferably includes a swing mechanism or / and a gantry moving mechanism.
If a swing mechanism is provided in the blower fan with a spray nozzle of the present invention in the same manner as a general fan, spraying and blowing can be directed in an arbitrary direction. Furthermore, it is preferable to provide a pedestal moving mechanism so that it can be moved to an arbitrary place, or to install a rail on the upper part so as to be able to reciprocate on the rail so that a wide range of air conditioning can be performed.
　前記送風ファンに取り付けるスプレーノズルは、水を加圧噴射する一流体タイプ及び圧搾空気と水を混合噴射する二流体タイプであり、
　前記送風ファンの回転羽根を囲む外周枠の外面側に間隔をあけて複数個取り付け、かつ、該スプレーノズルの噴射口を送風ファンの送風吹出開口の内周側に傾斜させて配置し、該スプレーノズルの噴射口から噴射した噴霧が、前記送風ファンからの風と混合して吹き出されるものとしている。
　送風ファンの外周枠にスプレーノズルを取り付けた環状の配管を外嵌しても良いし、送風ファンの外周枠の吹き出し側を管状として配水管として用い、該配水管にスプレーノズルを取り付けてもよい。 The spray nozzle attached to the blower fan is a one-fluid type that pressurizes and jets water and a two-fluid type that mixes and jets compressed air and water,
A plurality of the outer peripheral frames that surround the rotating blades of the blower fan are attached at intervals to the outer surface side, and the spray nozzle outlets are inclined to the inner peripheral side of the blower fan opening of the blower fan, The spray sprayed from the spray nozzle is mixed with the wind from the blower fan and blown out.
An annular pipe with a spray nozzle attached to the outer peripheral frame of the blower fan may be externally fitted, or the blowout side of the outer peripheral frame of the blower fan may be used as a tubular water distribution pipe, and the spray nozzle may be attached to the water distribution pipe .
　本発明の大規模空間の空調システムは、エアコンによる冷房が困難な大規模空間、出入口が開放されている半屋内において、スプレーノズル付き送風機から噴霧を含んだ送風を発生させ、ノズルから噴射する霧の水滴が蒸発する際に送風ファンから吹き出す空気の熱を奪って、気化熱を利用として冷却風としている。よって、扇風機と比較して迅速に冷房を実現でき、かつ、電源と水道水があれば簡単に設置できる。また、エアコンを使用する場合に発生する排熱、Ｃ０２の発生もなく、かつ、設置コストおよび運転コストを低減できる。さらに、加湿用および鎮埃用として多岐に利用することができる。 The large-scale space air-conditioning system of the present invention is a mist sprayed from a nozzle that generates air blown from a blower equipped with a spray nozzle in a large-scale space that is difficult to cool by an air conditioner and a semi-indoor where the entrance is open. When the water droplets evaporate, the air blown from the blower fan is deprived of heat, and the heat of vaporization is used as cooling air. Therefore, compared with a fan, it can implement | achieve cooling rapidly and can be easily installed if there is a power source and tap water. Further, waste heat generated when using air conditioning, without generation of C0 2, and can reduce the installation cost and operation cost. Furthermore, it can be used in various ways for humidification and dust control.
本発明を実施する工場内の全体レイアウトを示す概略平面図である。It is a schematic plan view which shows the whole layout in the factory which implements this invention. （Ａ）は図１の要部縦断面図、（Ｂ）はスプレーノズル付き送風ファンから吹き出される噴霧を含む送風を示す図面である。(A) is principal part longitudinal cross-sectional view of FIG. 1, (B) is drawing which shows the ventilation containing the spray blown from the ventilation fan with a spray nozzle. （Ａ）は前記スプレーノズル付き送風ファンの設置例を示す説明図、（Ｂ）は並列したスプレーノズル付き送風ファンから吹き出される噴霧を含む送風を示す図面である。(A) is explanatory drawing which shows the example of installation of the said ventilation fan with a spray nozzle, (B) is drawing which shows the ventilation containing the spray blown from the ventilation fan with a spray nozzle arranged in parallel. スプレーノズル付き送風ファンの斜視図である。It is a perspective view of the ventilation fan with a spray nozzle. （Ａ）は図４に示すスプレーノズル付き送風ファンの正面図、（Ｂ）は側面図である。(A) is a front view of the ventilation fan with a spray nozzle shown in FIG. 4, (B) is a side view. スプレーノズルの配置を示す正面図である。It is a front view which shows arrangement | positioning of a spray nozzle. スプレーノズル付き送風ファンの他の設置例を示す説明図である。It is explanatory drawing which shows the other example of installation of the ventilation fan with a spray nozzle. （Ａ）は使用するスプレーノズルの断面図、（Ｂ）はノズルチップの説明図である。(A) is sectional drawing of the spray nozzle to be used, (B) is explanatory drawing of a nozzle tip. 本発明の作用効果を示すグラフである。It is a graph which shows the effect of this invention. 従来例を示す図面である。It is drawing which shows a prior art example.
　以下、本発明の実施形態を図面を参照して説明する。
　実施形態の大規模空間の空調システムは、図１に示す天井高さ約３ｍ～６ｍ、水平断面積約４０００ｍ2の大規模な工場５０の内部を冷房、加湿を行い、其の際に鎮埃作用も行うものである。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The air conditioning system of the large-scale space of the embodiment cools and humidifies the inside of a large factory 50 having a ceiling height of about 3 m to 6 m and a horizontal sectional area of about 4000 m 2 shown in FIG. It also acts.
　工場５０の内部は大規模空間を有するが、作業員のために冷房や加湿を行う必要があるエリアは図１中で枠囲みする７つのエリアが冷房／加湿エリアＡ～Ｇであり、他の領域は機械等の設備場所、材料置き場、製品置き場等で冷房や加湿を行う必要がない領域である。各冷房／加湿エリアＡ～Ｇには、図４～６に示すスプレーノズル付き送風ファン１を設置しており、対象とする作業員の密度や移動状況に応じて、スプレーノズル付き送風ファン１を固定、自動的に往復移動、作業員により移動のいずれかとして設置している。かつ、設置するスプレーノズル付き送風ファンを大型、中型、小型と変えている。 Although the factory 50 has a large-scale space, the areas that need to be cooled and humidified for the workers are the seven areas enclosed in the frame in FIG. 1 are the cooling / humidification areas A to G. The area is an area where it is not necessary to perform cooling or humidification in an equipment place such as a machine, a material place, and a product place. Each of the cooling / humidification areas A to G is provided with a blower fan 1 with a spray nozzle as shown in FIGS. 4 to 6, and the blower fan 1 with a spray nozzle is installed according to the density and movement of the target worker. It is installed as fixed, automatically reciprocating, or moved by workers. In addition, the installed blower fan with spray nozzle is changed to large, medium and small.
　前記冷房／加湿エリアＡでは図３に示すように、スプレーノズル付き送風ファン１を工場内の上部（高さ約３ｍ位置）に装架したフレームＦＲに架台３を介して所要間隔をあけて設置している。スプレーノズル付き送風ファン１は送風および噴射方向を下向傾斜とし、送風および噴霧が作業員に向かって散布される設定としている。
　冷房／加湿エリアＢ、Ｃ、Ｆでは、図２（Ａ）に示すように、それぞれ１台のスプレーノズル付き送風ファン１を上部に設けたガイドレールＧＲに自動往復移動するように架台３を介して取り付けている。該冷房／加湿エリアＢ、Ｃ、Ｆでも上部にスプレーノズル付き送風ファン１を設置するため、送風および噴射方向を下向傾斜とし、送風および噴霧が作業員に向かって散布される設定としている。 In the cooling / humidification area A, as shown in FIG. 3, a blower fan 1 with a spray nozzle is installed on a frame FR mounted at the upper part of the factory (at a height of about 3 m) with a required interval through the mount 3. is doing. The blower fan 1 with a spray nozzle is set so that the blowing and spraying directions are inclined downward, and the blowing and spraying are sprayed toward the worker.
In the cooling / humidification areas B, C, and F, as shown in FIG. 2 (A), each of the blower fans 1 with spray nozzles is moved through the gantry 3 so as to automatically reciprocate to the guide rail GR provided on the upper part. Attached. In the cooling / humidification areas B, C, and F, the blower fan 1 with the spray nozzle is installed on the upper part, so that the blow and spray directions are inclined downward, and the blow and spray are set to be sprayed toward the worker.
　冷房／加湿エリアＤは作業員が少数であるため、図４、図５、図６に示すように、１台の移動台車４上にスプレーノズル付き送風ファン１を搭載して配置し、作業員が任意の位置へ移動させることができるようにしている。移動台車４上のスプレーノズル付き送風ファン１は床面からの設置高さが２ｍ未満の１ｍ程度の位置であるため、送風および噴射方向を上向き傾斜とし、送風および噴霧が作業員に向かって散布される設定としている。
　なお、移動台車を２～２．５ｍと高くし、該移動台車上にスプレーノズル付き送風ファン１を搭載する場合は送風および噴射方向を略水平横向きとし、送風および噴霧が作業員に向かって散布される設定としている。 Since the cooling / humidification area D has a small number of workers, as shown in FIGS. 4, 5, and 6, the blower fan 1 with the spray nozzle is mounted on the single movable carriage 4 and arranged. Can be moved to any position. Since the blower fan 1 with the spray nozzle on the movable carriage 4 is at a position of about 1 m with an installation height from the floor surface of less than 2 m, the blowing and spraying directions are inclined upward, and the blowing and spraying are spread toward the workers. It is set to be done.
When the moving carriage is raised to 2 to 2.5 m and the blower fan 1 with the spray nozzle is mounted on the movable carriage, the blowing and spraying directions are set substantially horizontally and horizontally, and the blowing and spraying are spread toward the workers. It is set to be done.
　冷房／加湿エリアＥでは多数の作業員が定位置で作業しているエリアである。よって、図７に示すように、床面Ｆに定置した固定架台６上にスプレーノズル付き送風ファン１を搭載して、間隔をあけて配置している。これらのスプレーノズル付き送風ファン１は設置高さが１ｍであるため、送風および噴射方向を作業員の頭部に向けて上向き傾斜としている。 The cooling / humidification area E is an area where a large number of workers are working at a fixed position. Therefore, as shown in FIG. 7, the blower fan 1 with a spray nozzle is mounted on the fixed base 6 fixed on the floor surface F, and is arranged at intervals. Since these blower fans 1 with a spray nozzle have an installation height of 1 m, the blowing and jetting directions are inclined upward toward the head of the worker.
　冷房／加湿エリアＧでは作業員が比較的少なく、かつ、定位置で作業しているエリアであるため、前記エリアＥと同様に床面に定置した２台の固定架台上にスプレーノズル付き送風ファン１を搭載して、間隔をあけて配置している。これらのスプレーノズル付き送風ファン１は設置高さが２mであるため、送風および噴射方向を作業員の頭部方向の略水平横向きとしている。 Since the cooling / humidification area G is an area where there are relatively few workers and the work is performed at a fixed position, a blower fan with a spray nozzle is mounted on two fixed mounts placed on the floor as in the area E. 1 is installed and arranged at intervals. Since these blower fans 1 with a spray nozzle have an installation height of 2 m, the air blowing and jetting directions are set to be substantially horizontal laterally in the direction of the operator's head.
　本発明で用いるスプレーノズル付き送風ファン１は、送風量が８０～１，０００ｍ3／min、噴霧量が１０～１００Ｌ／ｈｒである。送風と噴霧とを同時に行う場合、送風量と噴霧量の比は、噴霧量／送風量が０．５×１０-3～５．０×１０-3の範囲になるように制御している。
　また、スプレーノズル付き送風ファン１は図２（Ｂ）に示す有効飛距離Ｓが１０ｍ～５０ｍ、送風方向に１０ｍ離れた地点の温度低下が４～６℃、２０ｍ離れた地点で温度低下が２～３℃、３０ｍ離れた地点で温度低下が1～２℃温度の冷房能力を有するものを用いている。 The blower fan 1 with a spray nozzle used in the present invention has a blown amount of 80 to 1,000 m 3 / min and a spray amount of 10 to 100 L / hr. When the air blowing and the spraying are performed simultaneously, the ratio of the air blowing amount and the spraying amount is controlled so that the spray amount / the air blowing amount is in the range of 0.5 × 10 −3 to 5.0 × 10 −3 .
Further, the blower fan 1 with a spray nozzle has an effective flying distance S shown in FIG. 2B of 10 to 50 m, a temperature drop at a point 10 m away in the blowing direction is 4 to 6 ° C., and a temperature drop at a point 20 m away is 2 The one having a cooling capacity of 1 to 2 ° C. with a temperature drop of 1 to 2 ° C. at a point 30 m away from 3 ° C. is used.
　本実施形態では、前記スプレーノズル付き送風ファン１は図４、図５および図６に示す同一形状としたスプレーノズル付き送風ファン１を用いている。
　該スプレーノズル付き送風ファン１は送風ファン１０の回転羽根１１を囲む円筒ケース１２の送風吹出開口１３の外周に環状の水供給管２３を取り付け、該環状の水供給管２３に複数のスプレーノズル２０を等間隔で取り付けている。かつ、図６に示すように、各スプレーノズル２０は噴射口２１を送風吹出開口１３の内周側に傾斜させて配置し、噴射口２１から噴射する噴霧が、送風ファン１０から吹き出す風と混合流体となって飛散するようにしている。本実施形態では、送風ファン１０の直径は７００ｍｍで、該送風ファンの外周に３６個のスプレーノズル２０を等間隔で取り付けている。 In this embodiment, the blower fan 1 with a spray nozzle uses the blower fan 1 with a spray nozzle made into the same shape shown in FIG.4, FIG.5 and FIG.6.
The blower fan 1 with the spray nozzle has an annular water supply pipe 23 attached to the outer periphery of the blowout opening 13 of the cylindrical case 12 surrounding the rotary blade 11 of the blower fan 10, and a plurality of spray nozzles are attached to the annular water supply pipe 23. 20 are attached at equal intervals. In addition, as shown in FIG. 6, each spray nozzle 20 is arranged such that the injection port 21 is inclined to the inner peripheral side of the air blowing opening 13, and the spray injected from the injection port 21 is blown from the air blowing fan 10. As a mixed fluid, it is scattered. In this embodiment, the diameter of the blower fan 10 is 700 mm, and 36 spray nozzles 20 are attached to the outer periphery of the blower fan at equal intervals.
　該スプレーノズル付き送風ファン１は、図４、図５に示すように、円筒ケース１２にＵ字状の保持枠１５の両側枠に軸着し、軸に固定したハンドル１６を回転させることで、仰角を調整して、送風および噴霧方向を前記のように設置高さに応じて上向き、下向き、水平向きに調整している。
　また、保持枠１５の下枠１５ａに連結した支持台１４に首振り用スイッチ１７および首振り用モータ１８および送風ＯＮ・ＯＦＦスイッチ１９を設置している。
　前記構成としたスプレーノズル付き送風ファン１のユニットを、図３に示すように上部に配置する場合は架台３に搭載し、該架台３を上部フレームに吊り下げて固定している。また、前記スプレーノズル付き送風ファン１を図５に示すように移動台車４に搭載し、さらに、図７に示すように床面Ｆに定置した固定架台６上に搭載している。 As shown in FIGS. 4 and 5, the blower fan 1 with a spray nozzle is pivotally attached to both side frames of a U-shaped holding frame 15 on a cylindrical case 12 and rotates a handle 16 fixed to the shaft. The elevation angle is adjusted, and the blowing and spraying directions are adjusted upward, downward, and horizontally according to the installation height as described above.
Further, a swing switch 17, a swing motor 18, and a blower ON / OFF switch 19 are installed on the support base 14 connected to the lower frame 15 a of the holding frame 15.
When the unit of the blower fan 1 with a spray nozzle having the above-described configuration is arranged at the upper portion as shown in FIG. 3, it is mounted on the gantry 3 and the gantry 3 is suspended and fixed to the upper frame. Further, the blower fan 1 with the spray nozzle is mounted on a movable carriage 4 as shown in FIG. 5, and is further mounted on a fixed base 6 fixed on the floor surface F as shown in FIG.
　前記スプレーノズル２０には環状の水供給管２３から水道水を供給し、図３に示すように、水供給管２３に配管３０（スプレーノズル付き送風ファンが固定の場合は金属製または樹脂製のパイプ、移動の場合はゴムホース）を連結し、該配管３０を電磁開閉弁３１を介して水道管と連結したポンプユニット３２に連結している。前記電磁開閉弁３１は温湿度制御する噴霧制御ユニット２５により制御している。該噴霧制御ユニット２５はスプレーノズル付き送風ファン１を取り付けた前記冷房／加湿エリアＡ～Ｆにそれぞれ設置した温湿度計３８（図１、図７に示す）から測定値を受信し、温度、湿度を予め設定している閾値と対比して開閉制御している。
　また、前記噴霧制御ユニット２５とともにファン制御ユニット２６を設置し、該ファン制御ユニット２６にも温湿度計３８から測定値を送信し、予め設定している閾値と対比して送風ファン１０をＯＮ、ＯＦＦ制御している。 Tap water is supplied to the spray nozzle 20 from an annular water supply pipe 23, and as shown in FIG. 3, a pipe 30 (made of metal or resin when the blower fan with the spray nozzle is fixed) is connected to the water supply pipe 23. A pipe or a rubber hose in the case of movement) is connected, and the pipe 30 is connected to a pump unit 32 connected to a water pipe via an electromagnetic on-off valve 31. The electromagnetic on-off valve 31 is controlled by a spray control unit 25 that controls temperature and humidity. The spray control unit 25 receives measured values from temperature / humidity meters 38 (shown in FIGS. 1 and 7) installed in the cooling / humidification areas A to F to which the blower fan 1 with a spray nozzle is attached, and the temperature and humidity. Is controlled to open and close in contrast to a preset threshold value.
In addition, the fan control unit 26 is installed together with the spray control unit 25, the measured value is transmitted from the thermohygrometer 38 to the fan control unit 26, and the blower fan 10 is turned on in comparison with a preset threshold value. OFF control is performed.
　前記スプレーノズル２０は、水を加圧噴射する一流体タイプの図８に示す構造としている。該スプレーノズル２０は重量が３０ｇ以下であり、このましくは４ｇ～２０ｇのものを用いている。前記スプレーノズル２０として本出願人の先願である特開２００８－１０４９２９号公報で提示したノズルを用いている。筒状の本体３２、該本体３２の噴射側壁３２ｂの内面に固定したノズルチップ３３からなり、ノズルチップをアルミナで形成している。本体３２は円筒状の周壁３２ａの一端を噴射側壁３２ｂで閉鎖し、その中央に穴３２ｃを設ける一方、周壁３２ａの他端は開口３２ｄとし、開口３２ｄは前記配管２３と連通し、本体３２の中空部３２ｅに流入している。 The spray nozzle 20 has a structure shown in FIG. 8 of a single fluid type that pressurizes and jets water. The spray nozzle 20 has a weight of 30 g or less, and preferably 4 to 20 g. As the spray nozzle 20, the nozzle presented in Japanese Patent Application Laid-Open No. 2008-104929, which is a prior application of the present applicant, is used. It consists of a cylindrical main body 32 and a nozzle tip 33 fixed to the inner surface of the injection side wall 32b of the main body 32, and the nozzle tip is made of alumina. In the main body 32, one end of a cylindrical peripheral wall 32a is closed by an injection side wall 32b, and a hole 32c is provided at the center thereof, while the other end of the peripheral wall 32a is an opening 32d, and the opening 32d communicates with the pipe 23, It flows into the hollow portion 32e.
　前記ノズルチップ３３は大略円盤形状とし、本体３２の成形時にモールドして、本体３２の噴射側壁３２ｂの内面に固定している。ノズルチップ３３は中心に噴射穴３３ａを備え、噴射穴３３ａから水を霧状として噴射する構成としている。該噴射穴３３ａは、流入側から縮径するテーパ状穴部３３ａ－１と、該テーパ状穴部３３ａ－１に連続して穴３２ｃに連通する小径穴部３３ａ－２とからなる。図８（Ｂ）に示すように、ノズルチップ３３の内面には９０度間隔をあけて円弧状に湾曲させた旋回溝３３ｂを設け、これら旋回溝３３ｂの内周端をテーパ状穴部３３ａ－１の周縁と連通させ、旋回溝３３ｂを通して水を旋回させながら流入する構成としている。 The nozzle tip 33 has a generally disk shape, is molded when the main body 32 is molded, and is fixed to the inner surface of the injection side wall 32 b of the main body 32. The nozzle tip 33 is provided with an injection hole 33a in the center and is configured to inject water from the injection hole 33a as a mist. The injection hole 33a includes a tapered hole portion 33a-1 that is reduced in diameter from the inflow side and a small diameter hole portion 33a-2 that is continuous with the tapered hole portion 33a-1 and communicates with the hole 32c. As shown in FIG. 8B, on the inner surface of the nozzle tip 33, there are provided turning grooves 33b that are curved in an arc shape with an interval of 90 degrees, and the inner peripheral ends of these turning grooves 33b are tapered holes 33a- 1 is communicated with the peripheral edge of 1, and is configured to flow while turning water through the turning groove 33 b.
　前記スプレーノズル２０では、水供給管２３から本体３２に流入する水は噴射側において、ノズルチップ３３の旋回溝３３ｂを通り、旋回流となって噴射穴３３ａのテーパ状穴部３３ａ－１に流入する。テーパ状穴部３３ａ－１内で、該穴部の内周面に沿って旋回しながら衝突するため、水滴が微細化される。該テーパ状穴部３３ａ－１より噴射側の小径穴部３３ａ－２に流入し、さらに、連通した本体３２の噴口３２ｃから１０～３０μｍの微粒子の水滴を含むセミドライフォグを噴射するものとしている。
　なお、前記スプレーノズル２０に代えて、本出願人の特許第５１１８４１０号で提供しているチェックバルブを備えたスプレーノズルを用いてもよい。
　また、前記一流体ノズルに代えて、圧搾空気と水を混合噴射する二流体タイプのスプレーノズルを用いてもよい。 In the spray nozzle 20, the water flowing from the water supply pipe 23 into the main body 32 passes through the swivel groove 33 b of the nozzle tip 33 on the jet side and flows into the tapered hole 33 a-1 of the spray hole 33 a as a swirl flow. To do. In the tapered hole portion 33a-1, collision occurs while turning along the inner peripheral surface of the hole portion, so that water droplets are made finer. A semi-dry fog containing water droplets of fine particles of 10 to 30 μm flows from the tapered hole 33a-1 into the small-diameter hole 33a-2 on the injection side, and further, from the nozzle 32c of the communicating main body 32.
Instead of the spray nozzle 20, a spray nozzle having a check valve provided in Japanese Patent No. 5118410 of the present applicant may be used.
Further, instead of the one-fluid nozzle, a two-fluid type spray nozzle that mixes and jets compressed air and water may be used.
　前記噴霧制御ユニット２５およびファン制御ユニット２６では、夏季等では温湿度計３８で測定される温度２５～４５℃で、湿度３０～７０％の条件下でスプレーノズル２０から噴霧を発生させると共に送風ファン１０をオンして、噴霧付き送風を発生する両稼動に設定している。また、湿度７０％を超過すると噴霧停止して送風のみに切り替える設定としている。
　さらに、冬季等では温度が２０℃以上で相対湿度４０％未満の条件下で、前記噴霧付き送風を発生する両稼動としている。なお、スプレーノズル２０のみ稼動とし、加湿器として機能させてもよい。
　さらに、廃熱により温風が安価に取得できれば、冬季に送風ファン１０から温風を吹き出してもよい。 The spray control unit 25 and the fan control unit 26 generate spray from the spray nozzle 20 at a temperature of 25 to 45 ° C. and a humidity of 30 to 70% as measured by a thermohygrometer 38 in summer and the like, and a blower fan 10 is turned on, and it sets to the double operation which generate | occur | produces ventilation with a spray. In addition, when the humidity exceeds 70%, spraying is stopped and only air blowing is switched.
Furthermore, in the winter season or the like, both operations are performed to generate the air flow with the spray under conditions where the temperature is 20 ° C. or higher and the relative humidity is less than 40%. Only the spray nozzle 20 may be operated and function as a humidifier.
Furthermore, if the warm air can be obtained at low cost by waste heat, the warm air may be blown from the blower fan 10 in winter.
　スプレーノズル２０から噴射する噴霧の水滴の平均粒子径を１０～５０μｍ、このましくは１０～３０μｍのセミドライフォグの噴霧としている。該噴霧は送風側に向けて傾斜しているため、送風引出開口１３から吹き出される水滴は送風ファンから吹き出される空気と混合して、水滴は周囲の空気の熱を奪って蒸発し、送風を冷風とする。この冷風は図２（Ｂ）および図３（Ｂ）に示すように飛散し、飛散距離は１０ｍ～５０ｍ程度であり、本実施形態のスプレーノズル付き送風ファン１では図３（Ｂ）に示すように２０ｍは飛散する。この冷風は作業員に向けられているため、効率よく作業員がいる領域を冷房することができる。 The average particle size of the water droplets sprayed from the spray nozzle 20 is 10 to 50 μm, preferably 10 to 30 μm, with a semi-dry fog spray. Since the spray is inclined toward the blower side, the water droplets blown from the blower outlet opening 13 are mixed with the air blown from the blower fan, and the water droplets take away the heat of the surrounding air and evaporate. Let cool air. The cold air is scattered as shown in FIGS. 2B and 3B, and the scattering distance is about 10 to 50 m. In the blower fan 1 with the spray nozzle of the present embodiment, as shown in FIG. 3B. 20m will be scattered. Since the cold air is directed to the worker, the area where the worker is present can be efficiently cooled.
　前記スプレーノズル付き送風ファンによる温度低下を実験により測定した結果、送風方向に１０ｍ離れた地点の温度低下が４～６℃、２０ｍ離れた地点で温度低下が２～３℃、３０ｍ離れた地点で温度低下が1～２℃温度であった。 As a result of experimentally measuring the temperature drop by the blower fan with the spray nozzle, the temperature drop at a point 10 m away in the blowing direction is 4 to 6 ° C., the point at 20 m away, the temperature drop is 2 to 3 ° C., and the point 30 m away. The temperature drop was 1-2 ° C.
　図９に、前記スプレーノズル付き送風ファンを用いて冷房した工場にエリア内の温度と、工場のエリア外の温度、屋外の温度とを測定したグラフを示す。１３時から噴霧を開始し、１６時に噴霧を停止している。
　図９に示すようにエリアの温度は噴霧開始の１３：００から５分経過後にエリア外の温度と比較して４℃低下でき、平均３℃低下させることができた。また、１６：００に噴霧を停止すると、１５分後にはエリア外温度と同じ温度に戻っていた。 FIG. 9 shows a graph in which the temperature inside the area, the temperature outside the area of the factory, and the outdoor temperature are measured in the factory cooled using the blower fan with the spray nozzle. Spraying is started from 13:00 and spraying is stopped at 16:00.
As shown in FIG. 9, the temperature of the area could be reduced by 4 ° C. compared to the temperature outside the area after 5 minutes from 13:00 of the start of spraying, and could be reduced by an average of 3 ° C. When spraying was stopped at 16:00, the temperature returned to the same temperature as the outside temperature after 15 minutes.
　前記のように、本発明の大規模空間の空調システムによれば、送風ファンにスプレーノズルを取り付け、スプレーノズルからの噴霧を送風ファンから引き出す送風と混合させ、噴霧の水滴の気化熱で送風を冷却して効率よく冷気としている。この冷気を作業員に向けて効率よく吹き付けるため、大規模空間であっても、無駄なく低コストで冷房を図ることができる。 As described above, according to the large-scale space air conditioning system of the present invention, the spray nozzle is attached to the blower fan, the spray from the spray nozzle is mixed with the blown air drawn from the blower fan, and the air is blown by the heat of vaporization of the water droplets of the spray. Cool and efficiently cool. Since this cold air is efficiently blown toward the worker, even in a large-scale space, cooling can be achieved without waste and at low cost.
　本発明は前記実施形態に限定されず、本発明の要旨を逸脱しない範囲で種々の形態として利用できる。 The present invention is not limited to the above embodiment, and can be used in various forms without departing from the gist of the present invention.
　１　スプレーノズル付き送風ファン
　１０　送風ファン
　１１　回転羽根
　２０　スプレーノズル
　２１　噴射口
　２３　水供給管
　２５　噴霧制御ユニット
　２６　ファン制御ユニット
  Ａ～Ｇ　冷房／加湿エリア DESCRIPTION OF SYMBOLS 1 Blower fan with a spray nozzle 10 Blower fan 11 Rotary blade 20 Spray nozzle 21 Injection port 23 Water supply pipe 25 Spray control unit 26 Fan control unit AG Cooling / humidification area

Claims (10)

  1.  　建造物の大規模空間にスプレーノズル付きの送風ファンを設置し、前記スプレーノズルは平均粒子径１０μｍ～５０μｍの液滴を噴霧するものとし、
    　前記スプレーノズル付きの送風ファンの稼動は、該送風ファンから発生する送風にスプレーノズルから噴射する噴霧を混合して吹き出す噴霧付き送風、前記スプレーノズルからの噴霧のみ、前記送風ファンからの送風のみを選択できる構成としていることを特徴とする大規模空間の空調システム。     A blower fan with a spray nozzle is installed in a large-scale space of a building, and the spray nozzle sprays droplets having an average particle diameter of 10 μm to 50 μm.
    The operation of the blower fan with the spray nozzle is performed by mixing the blown air generated from the blower fan with the spray sprayed from the spray nozzle and blowing out the spray, spraying only from the spray nozzle, and blowing only from the blower fan. Air-conditioning system for large-scale spaces, characterized by a selectable configuration.
  2. 　前記スプレーノズル付き送風ファンを設置する前記大規模空間は天井高さが３ｍ以上、面積５００ｍ2以上であり、工場、体育館、施設の大教室・大食堂・イベントホール等からなる屋内の大規模空間、あるいは駅、ショッピングモール等の主通路あるいは待ち合い場所等からなる半屋内であり、
    　前記大規模空間に、１以上の前記スプレーノズル付き送風ファンを移動自在に設置し、または定位置に間隔をあけて設置している請求項１に記載の大規模空間の空調システム。     The large-scale space where the blower fan with the spray nozzle is installed has a ceiling height of 3 m or more and an area of 500 m 2 or more, and is a large indoor space consisting of factories, gymnasiums, large classrooms, dining halls, event halls, etc. Or a semi-indoor consisting of a main passage or a meeting place in a station, shopping mall, etc.
    2. The air conditioning system for a large-scale space according to claim 1, wherein the one or more blower fans with spray nozzles are movably installed in the large-scale space, or are installed at predetermined positions with an interval.
  3. 　前記建造物の屋内および半屋内の温度２５～４５℃且つ湿度３０～７０％の条件下で前記噴霧付き送風を発生する両稼動とし、湿度７０％を超過すると噴霧停止して送風のみ稼働に切り替える制御手段を備え、前記スプレーノズル付き送風ファンで冷房する構成としている請求項１または請求項２に記載の大規模空間の空調システム。 Both the operation of generating air with spray is performed under conditions of indoor temperature and semi-indoor temperature of 25 to 45 ° C and humidity of 30 to 70% in the building. When the humidity exceeds 70%, spraying is stopped and only the air flow is switched to operation. The air conditioning system for a large-scale space according to claim 1 or 2, further comprising a control unit, wherein the air-cooling fan is equipped with a spray nozzle.
  4. 　前記建造物の屋内または半屋内の温度が２０℃以上で相対湿度４０％未満の条件下で、前記噴霧付き送風を発生する両稼動または前記噴霧のみ稼動とし、加湿器として機能させる請求項１乃至請求項３のいずれか１項に記載の大規模空間の空調システム。 The two- or two-spray operation that generates the air flow with the spray is operated under the condition that the indoor or semi-indoor temperature of the building is 20 ° C. or higher and the relative humidity is less than 40%, and functions as a humidifier. The air conditioning system of the large-scale space of any one of Claim 3.
  5. 　前記スプレーノズル付き送風ファンは、１台あたりの送風量が８０～１，０００ｍ3／min、噴霧量が１０～１００Ｌ／ｈｒ、有効飛距離が１０ｍ～５０ｍとし、送風方向に１０ｍ離れた地点の温度低下が４～６℃、２０ｍ離れた地点の温度低下が２～３℃、３０ｍ離れた地点の温度低下が1～２℃の冷房能力を有するものである請求項１乃至請求項４のいずれか１項に記載の大規模空間の空調システム。 The blower fan with a spray nozzle has an air flow rate of 80 to 1,000 m 3 / min, a spray amount of 10 to 100 L / hr, an effective flight distance of 10 m to 50 m, and a point 10 m away in the air blowing direction. The temperature drop is 4 to 6 ° C, the temperature drop at a point 20 meters away is 2 to 3 ° C, and the temperature drop at a point 30 meters away is 1 to 2 ° C. The large-scale space air conditioning system according to claim 1.
  6. 　前記スプレーノズル付き送風ファンの送風量と噴霧量の比を、噴霧量／送風量が０．５×１０-3～５．０×１０-3としている請求項１乃至請求項５のいずれか１項に記載の大規模空間の空調システム。 The ratio of the blowing amount and the spray amount of the blower fan with the spray nozzle is such that the spray amount / blast amount is 0.5 × 10 −3 to 5.0 × 10 −3. A large-scale space air conditioning system as described in the paragraph.
  7. 　前記スプレーノズル付き送風ファンは、床面からの設置高さが２ｍ未満までは送風および噴霧方向を上向き傾斜、設置高さが２ｍ～２．５ｍでは送風および噴霧方向を水平横向き、設置高さが２．５ｍを超えると送風および噴霧方向を下向き傾斜とし、対象とする人間に送風および噴霧方向が向けられるようにしている請求項１乃至請求項６のいずれか１項に記載の大規模空間の空調システム。 The blower fan with a spray nozzle is inclined upward in the direction of blowing and spraying when the installation height from the floor is less than 2 m, and the horizontal and horizontal direction of blowing and spraying when the installation height is from 2 m to 2.5 m. The large-scale space according to any one of claims 1 to 6, wherein when the distance exceeds 2.5 m, the air blowing and spraying directions are inclined downward so that the air blowing and spraying directions are directed to a target person. Air conditioning system.
  8. 　前記送風ファンに取り付けるスプレーノズルは、重量が３０ｇ以下であり、少なくとも噴霧孔を設けた部分をアルミナで形成している請求項１乃至請求項７のいずれか１項に記載の大規模空間の空調システム。 The air-conditioner of a large-scale space according to any one of claims 1 to 7, wherein the spray nozzle attached to the blower fan has a weight of 30 g or less, and at least a portion provided with a spray hole is formed of alumina. system.
  9. 　前記送風ファンは首振り機構あるいは／および架台移動機構を備えている請求項１乃至請求項８のいずれか１項に記載の大規模空間の空調システム。 The large-scale space air conditioning system according to any one of claims 1 to 8, wherein the blower fan includes a swing mechanism and / or a gantry moving mechanism.
  10. 　前記送風ファンに取り付けるスプレーノズルは、水を加圧噴射する一流体タイプ及び圧搾空気と水を混合噴射する二流体タイプであり、該スプレーノズルを前記送風ファンの回転羽根を囲む外周枠の外面側に間隔をあけて複数個取り付け、かつ、該スプレーノズルの噴射口は、送風ファンの送風吹出開口の内周側に傾斜させて配置し、該スプレーノズルの噴射口から噴射した噴霧が、前記送風ファンからの風と混合して吹き出されるものとしている請求項１乃至請求項９のいずれか１項に記載の大規模空間の空調システム。 The spray nozzle attached to the blower fan is a one-fluid type that pressurizes and jets water and a two-fluid type that mixes and jets compressed air and water, and the spray nozzle is on the outer surface side of the outer peripheral frame surrounding the rotating blades of the blower fan. A plurality of spray nozzles are attached at intervals, and the spray nozzle outlets are arranged to be inclined toward the inner peripheral side of the blower blower opening of the blower fan. The air conditioning system for a large-scale space according to any one of claims 1 to 9, wherein the air is mixed with the air from the blower fan and blown out.
PCT/JP2014/066120 2013-06-25 2014-06-18 Air-conditioning system for large-scale space WO2014208410A1 (en)

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