JP5785633B2 - Air supply device - Google Patents

Air supply device Download PDF

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JP5785633B2
JP5785633B2 JP2014034941A JP2014034941A JP5785633B2 JP 5785633 B2 JP5785633 B2 JP 5785633B2 JP 2014034941 A JP2014034941 A JP 2014034941A JP 2014034941 A JP2014034941 A JP 2014034941A JP 5785633 B2 JP5785633 B2 JP 5785633B2
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air
chamber
air supply
heat exchange
supply
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鈴木 利幸
利幸 鈴木
松本 潤
潤 松本
和男 早川
和男 早川
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高砂熱学工業株式会社
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本発明は、例えば高さが5mを超えるような大形の装置が設置される大型空間室に適した置換換気設備などに設置される給気装置に関する。   The present invention relates to an air supply apparatus that is installed in a replacement ventilation facility or the like suitable for a large space room in which a large apparatus having a height exceeding 5 m is installed, for example.
例えば金属加工機械などといった大型機械の精密な組み立てや調整などを高精度で行うために、大型機械が設置される大型空間室内を正確に空調し、熱膨張などの影響の無い均一な温度環境が必要になる。また、超音波測定器などの計測位置が高い位置にあるときには、周囲空気の温度に影響されないように、計測値に温度による誤差を生じさせない処理環境が要求される。更に、上下方向に各処理工程が配置される印刷工場のように、気流の発生を嫌う設備もある。   For example, in order to perform precise assembly and adjustment of large machines such as metal processing machines with high accuracy, the large space room where the large machines are installed is accurately air-conditioned, creating a uniform temperature environment that is not affected by thermal expansion. I need it. Further, when the measurement position of an ultrasonic measuring instrument or the like is at a high position, a processing environment that does not cause an error due to temperature in the measurement value is required so as not to be affected by the temperature of the surrounding air. Furthermore, there are facilities that dislike the generation of airflow, such as a printing factory where each processing step is arranged in the vertical direction.
ここで、工場や屋内駐車場などの大きい床面積の空間の換気システムとして、特開2001−349587号公報や特開2007−192530号公報、特許第3601611号公報などに示されるように、送風機から吹出した気流により換気を行うデリベント換気システム(混合空調)が知られている。   Here, as a ventilation system of a large floor space such as a factory or an indoor parking lot, as shown in Japanese Patent Application Laid-Open Nos. 2001-349877, 2007-192530, and 3,601,611, etc. 2. Description of the Related Art A deliberate ventilation system (mixed air conditioning) that performs ventilation with a blown airflow is known.
また一方、工場や倉庫などの天井の高い建物において、下方に形成される居住空間を効率よく空調するものとして、例えば特開平6−185780号公報や特開2007−292365号公報、特許第4006196号公報などに示される置換換気システムが知られている。この置換換気システムでは、室温より低温の空気をゆっくりとした給気速度で居住空間に供給し、室内で加熱されて上昇した空気を、居住空間の上方で汚染物質と一緒に排気するものである。   On the other hand, in a building with a high ceiling such as a factory or a warehouse, for example, Japanese Patent Laid-Open No. 6-185780, Japanese Patent Laid-Open No. 2007-292365, and Japanese Patent No. 4006196 are known as those that efficiently air-condition a living space formed below. A replacement ventilation system shown in a publication or the like is known. In this replacement ventilation system, air having a temperature lower than room temperature is supplied to the living space at a slow air supply speed, and the air heated and raised in the room is exhausted together with pollutants above the living space. .
特開2001−349587号公報JP 2001-349487 A 特開2007−192530号公報JP 2007-192530 A 特許第3601611号公報Japanese Patent No. 3606011 特開平6−185780号公報JP-A-6-185780 特開2007−292365号公報JP 2007-292365 A 特許第4006196号公報Japanese Patent No. 4006196
しかしながら、吹出気流で換気するデリベント換気システムは、ドラフト感を人に与えるといった難点がある。また、床面から7m以上の高さまで空調対象領域が形成されるような大型空間室において、空調対象領域を上下方向に均一な温度環境とするためには、風速を速くして誘引気流による攪拌をしなければならないが、そうすると気流の影響や気流の搬送過程で上下に温度むらを生じ、加工精度等に悪影響を及ぼす。また、高い天井から誘引ファンを低い位置に吊り下げることを避けるため、誘引ファンの設置位置の検討が必要になる。   However, the delicate ventilation system that ventilates with a blown airflow has a drawback of giving a draft feeling to a person. In addition, in a large space room where the air-conditioning target area is formed to a height of 7 m or more from the floor surface, in order to make the air-conditioning target area a uniform temperature environment in the vertical direction, the air velocity is increased and stirring by the induced airflow is performed. However, if it does so, temperature fluctuations will occur in the upper and lower parts of the airflow and in the airflow transfer process, which will adversely affect the processing accuracy. Moreover, in order to avoid suspending the attracting fan from a high ceiling to a low position, it is necessary to examine the installation position of the attracting fan.
また、置換換気システムにおいては、空調空間内に低温空気を給気する低温空気の速度をなるべく小さくすることが行われている。しかしながら、低温空気の吹出し速度を小さくすればするほど、所定の給気量を得るためには、大型の給気装置や多大な給気面積を必要とし、設備コストを増大させる要因となり、また、大型の給気装置を設置する場所の確保が困難になる。更に、上下方向に渡って発熱する装置や設備がある場合、その近傍で冷気が早く上昇して消費されてしまう懸念がある。   In replacement ventilation systems, the speed of low-temperature air that supplies low-temperature air into an air-conditioned space is reduced as much as possible. However, the smaller the blowing speed of the low temperature air, the larger the air supply device and the large air supply area are required in order to obtain a predetermined air supply amount. It is difficult to secure a place for installing a large air supply device. Furthermore, when there is a device or facility that generates heat in the vertical direction, there is a concern that cold air rises quickly in the vicinity and is consumed.
本発明は、大型空間室に適した置換換気設備などに設置される給気装置を提供することを目的とする。   An object of this invention is to provide the air supply apparatus installed in the replacement ventilation equipment etc. which are suitable for a large space room.
本発明によれば、下から順に給気チャンバ、送風チャンバ、熱交チャンバを重ねた構成の給気装置であって、前記熱交チャンバの底板は鋼板で形成され、前記送風チャンバの上面と前記熱交チャンバの下面は一部の面積で連通しており、前記熱交チャンバの内部には、熱交換器が設けられ、かつ、人が通ることができる通路が形成されていることを特徴とする、給気装置である。 According to the present invention, an air supply device having a structure in which an air supply chamber, a blower chamber, and a heat exchange chamber are stacked in order from the bottom , wherein the bottom plate of the heat exchange chamber is formed of a steel plate, The lower surface of the heat exchange chamber communicates with a part of the area, and a heat exchanger is provided inside the heat exchange chamber, and a passage through which a person can pass is formed. It is an air supply device.
室内の側方に、この給気装置が複数台設置されており、各熱交チャンバの前面は吸気面であり、同一平面上になっていても良い。   A plurality of the air supply devices are installed on the side of the room, and the front surface of each heat exchange chamber may be an intake surface and may be on the same plane.
また、前記給気チャンバ、送風チャンバ、熱交チャンバの背部は、大型空間室の側壁面で塞がれ、前記熱交換器は、前記熱交チャンバの内部において前記大型空間室の側壁面の方向に寄せて配置されていても良い。また、前記熱交チャンバの前面に形成された吸気面をパンチングメタルまたはメッシュで構成し、前記熱交チャンバの内部において、前記吸気面の内側には、前記熱交換器との間に、人が通ることができる通路が形成されていても良い。 Further, the back portions of the air supply chamber, the air supply chamber, and the heat exchange chamber are closed by the side wall surface of the large space chamber, and the heat exchanger is arranged in the direction of the side wall surface of the large space chamber inside the heat exchange chamber. It may be arranged close to. In addition, the intake surface formed on the front surface of the heat exchange chamber is made of punching metal or mesh, and inside the heat exchange chamber, a person is placed between the heat exchanger and the heat exchanger. A passage that can pass therethrough may be formed.
また本発明によれば、下から順に給気チャンバ、熱交チャンバ、送風チャンバを連通させて重ねた構成の給気装置であって、前記送風チャンバには両吸込型の送風機が設けられ、前記熱交チャンバの底板は鋼板で形成され、前記送風チャンバの上面と前記熱交チャンバの下面は一部の面積で連通しており、前記送風チャンバの底面を人が通ることができる通路に形成したことを特徴とする、給気装置が提供される。 According to the present invention, the air supply chamber from the bottom up, heat exchange chamber, a gas supply device in which stacked by communicating blast chamber, the said blowing chamber double inlet fan is provided, the The bottom plate of the heat exchange chamber is formed of a steel plate, and the upper surface of the air exchange chamber and the lower surface of the heat exchange chamber communicate with each other in a part of the area, and a passage through which a person can pass through the bottom surface of the air exchange chamber is formed. An air supply device is provided.
本発明によれば、熱交チャンバの内部に設けられた通路に人が入ることにより、熱交換器や送風機の点検、メンテナンス、清掃等を行うことができる。
なお、給気装置が設置された置換換気設備にあっては、少なくとも空調対象領域の80%の高さまで鉛直方向に連続して形成された給気面から給気を供給することにより、省動力で上下方向の温度むらを小さくして空調対象領域全体をほぼ均一の温度に空調することができ、大型機械の精密な組み立てや調整などに適した温度環境を得ることができる。また、給気面に分布して設けられた複数の各給気口から給気を吹き出すと、空調対象領域内の空気が誘引されて一緒に移動する誘引作用がはたらく。本発明によれば、給気面に分布して設けられた複数の各給気口にフィンが取り付けられているので、各給気口から吹き出された給気に旋回成分が与えられ、給気に誘引される空調対象領域内の空気の誘引量(誘引比)を増加させることができる。そして、このように誘引量が増加することに伴い、運動量保存則に従って給気の速度は低減し、速やかに減速することとなる。その結果、少ない風量で空調対象領域の全域を均一な温度に維持できるようになる。また、誘引量が増加することに伴い、空調対象領域の上下温度差をより小さくすることが可能となる。
According to the present invention, when a person enters a passage provided in the heat exchange chamber, the heat exchanger and the blower can be inspected, maintained, cleaned, and the like.
In the replacement ventilation facility in which the air supply device is installed, power is saved by supplying air from the air supply surface formed continuously in the vertical direction to at least 80% of the air-conditioning target area. Thus, the temperature unevenness in the vertical direction can be reduced and the entire air-conditioned area can be air-conditioned to a substantially uniform temperature, and a temperature environment suitable for precise assembly and adjustment of a large machine can be obtained. In addition, when air is blown out from a plurality of air supply ports provided distributed on the air supply surface, an attracting action in which the air in the air-conditioning target area is attracted and moves together works. According to the present invention, since the fins are attached to the plurality of air supply ports distributed on the air supply surface, the swirl component is given to the air blown from each air supply port, and the air supply The amount of attraction (attraction ratio) of air in the air-conditioning target area attracted by the air can be increased. As the amount of attraction increases in this way, the speed of air supply is reduced according to the law of conservation of momentum, and the speed is quickly reduced. As a result, the entire area to be air-conditioned can be maintained at a uniform temperature with a small air volume. Moreover, with the increase in the amount of attraction, it becomes possible to further reduce the upper and lower temperature difference in the air conditioning target area.
本発明の実施の形態にかかる給気装置が設置された置換換気設備を備えた大型空間室の説明図である。It is explanatory drawing of the large sized space room provided with the replacement ventilation installation in which the air supply apparatus concerning embodiment of this invention was installed. 大型空間室の内側面図である。It is an inner side view of a large-sized space room. 給気面の説明図である。It is explanatory drawing of an air supply surface. 整流板の正面図である。It is a front view of a baffle plate. 大型空間室の内側から見て反時計回転方向の旋回成分を給気に与えるようにフィンを取り付けた給気口の正面図である。It is a front view of the air supply opening | mouth which attached the fin so that the turning component of a counterclockwise rotation direction might be given to supply air seeing from the inner side of a large sized space room. 大型空間室の内側から見て時計回転方向の旋回成分を給気に与えるようにフィンを取り付けた給気口の正面図である。It is a front view of the air supply opening | mouth which attached the fin so that the turning component of the clockwise rotation direction might be given to supply air seeing from the inner side of a large sized space room. 給気面の下部には、給気の抵抗となる整流布を取り付けた状態を示す、大型空間室の内側面図である。It is an inner side view of a large-sized space room which shows the state which attached the baffle cloth used as the resistance of supply air to the lower part of the supply surface. 比較例1のデリベント換気の説明図である。It is explanatory drawing of the delicate ventilation of the comparative example 1. 比較例2の置換換気の説明図である。It is explanatory drawing of the replacement ventilation of the comparative example 2. 実施例の置換換気の説明図である。It is explanatory drawing of the replacement ventilation of an Example. 比較例1、2および実施例の測定地点を示す大型空間室の平面図である。It is a top view of the large-sized space room which shows the measurement points of the comparative examples 1 and 2 and an Example. 各測定地点における上下方向の温度分布を示すグラフである。It is a graph which shows the temperature distribution of the up-down direction in each measurement point. 各測定地点における上下方向の風速分布を示すグラフである。It is a graph which shows the wind speed distribution of the up-down direction in each measurement point.
以下、本発明の実施の形態にかかる給気装置20が設置された置換換気設備1を、図面を参照にして説明する。なお、本明細書及び図面において、実質的に同一の機能構成を有する構成要素については、同一の符号を付することにより重複説明を省略する。   Hereinafter, a replacement ventilation facility 1 in which an air supply device 20 according to an embodiment of the present invention is installed will be described with reference to the drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.
図1に示すように、この置換換気設備1によって空調が行われる大型空間室10は、床面11から天井面12までの高さHが例えば16〜17mであり、床面11の面積が例えば4400mもある、大容積を有している。大型空間室10の床面11には、各種産業分野などで使用される大型機械13等が置かれている。大型空間室10の内部では、この大型機械13の精密な組み立てや調整などが行われる。このため、大型空間室10の内部は、床面11から少なくとも大型機械13と同じ高さまでの範囲が、均一な温度環境が必要な空調対象領域15とされる。なお、この実施の形態では、空調対象領域15の高さh1は7.5mに設定されている。大型空間室10の内部において、空調対象領域15よりも上方は、空調非対象領域16である。 As shown in FIG. 1, the large space room 10 that is air-conditioned by the replacement ventilation facility 1 has a height H from the floor surface 11 to the ceiling surface 12 of, for example, 16 to 17 m, and the area of the floor surface 11 is, for example, 4400m 2 also has a large volume. On the floor surface 11 of the large space room 10, a large machine 13 used in various industrial fields and the like is placed. The large machine 13 is precisely assembled and adjusted in the large space chamber 10. For this reason, the inside of the large space chamber 10 is an air-conditioning target region 15 that requires a uniform temperature environment in a range from the floor surface 11 to at least the same height as the large machine 13. In this embodiment, the height h1 of the air conditioning target area 15 is set to 7.5 m. In the large space room 10, the air conditioning non-target region 16 is above the air conditioning target region 15.
大型空間室10内の側方には、大型空間室10内の空気を空調非対象領域16で吸引し、温度調節した後、空調対象領域15に温度調節された空気(給気SA)を循環して供給するための給気装置20が設置されている。大型空間室10内の側方には、給気装置20が複数台設置されており、図2では、大型空間室10内の側方に、2つの給気装置20が横に並べて配置された状態を示している。なお、給気装置20の設置台数は任意である。各給気装置20は、例えば大型空間室10の内部にあるスパン(図示せず)の間に設置される。   To the side of the large space chamber 10, the air in the large space chamber 10 is sucked in the air conditioning non-target region 16 and the temperature is adjusted, and then the temperature-controlled air (supply air SA) is circulated in the air conditioning target region 15. An air supply device 20 is installed for supply. A plurality of air supply devices 20 are installed on the side of the large space chamber 10. In FIG. 2, two air supply devices 20 are arranged side by side on the side of the large space chamber 10. Indicates the state. In addition, the installation number of the air supply apparatus 20 is arbitrary. Each air supply device 20 is installed, for example, between spans (not shown) inside the large space chamber 10.
給気装置20は、下から順に給気チャンバ21、送風チャンバ22、熱交チャンバ23を重ねた構成である。これら給気チャンバ21の上面と送風チャンバ22の下面、送風チャンバ22の上面と熱交チャンバ23の下面はいずれも一部の面積で連通しており、給気装置20の内部には上下方向に連通する流路19が形成されている。なお、図1に示すように、各チャンバ21〜23の背部(給気装置20の背部)は、大型空間室10の側壁面24で塞がれている。隣接する給気装置20は、大型空間室10の側壁面24に沿って適当な間隔を空けて設置され、各給気装置20の前面(各チャンバ21〜23の前面)は、同一平面上になっている。   The air supply device 20 has a configuration in which an air supply chamber 21, a blower chamber 22, and a heat exchange chamber 23 are stacked in order from the bottom. The upper surface of the air supply chamber 21 and the lower surface of the air supply chamber 22, and the upper surface of the air supply chamber 22 and the lower surface of the heat exchange chamber 23 communicate with each other in a part of the area. A communication channel 19 is formed. As shown in FIG. 1, the back portions of the chambers 21 to 23 (the back portions of the air supply device 20) are closed by the side wall surface 24 of the large space chamber 10. Adjacent air supply devices 20 are installed at appropriate intervals along the side wall surface 24 of the large space chamber 10, and the front surfaces of the air supply devices 20 (the front surfaces of the chambers 21 to 23) are on the same plane. It has become.
熱交チャンバ23の内部には、加熱コイル30と冷却コイル31からなる熱交換器32が設けられている。熱交チャンバ23の前面(大型空間室10の内部から見える側面)は、パンチングメタル、メッシュなどで形成された吸気面34になっている。熱交チャンバ23の内部において、吸気面34の内側には、熱交換器32との間に、人が通ることができる通路35が形成されている。この通路35に人が入ることにより、熱交換器32や後述する送風機36の点検、メンテナンス、清掃等を行うことができる。   Inside the heat exchanger chamber 23, a heat exchanger 32 including a heating coil 30 and a cooling coil 31 is provided. The front surface of the heat exchange chamber 23 (side surface seen from the inside of the large space chamber 10) is an intake surface 34 formed of punching metal, mesh, or the like. Inside the heat exchange chamber 23, a passage 35 through which a person can pass is formed between the heat exchanger 32 and the inside of the intake surface 34. When a person enters the passage 35, the heat exchanger 32 and the blower 36 described later can be inspected, maintained, cleaned, and the like.
送風チャンバ22の内部には、下向きに空気を送風する送風機36が設けられている。この送風機36の稼動により、空調対象領域15よりも上方の空調非対象領域16において大型空間室10の内部の空気が、吸気面34を通じて熱交チャンバ23内に引き込まれて、熱交換器32に接触し、所望の温度に調整される。そして、所望の温度に調整された空気が、熱交チャンバ23から送風チャンバ22内を通過し、更に給気チャンバ21に送風される。   A blower 36 that blows air downward is provided inside the blow chamber 22. Due to the operation of the blower 36, the air inside the large space 10 is drawn into the heat exchange chamber 23 through the intake surface 34 in the air conditioning non-target region 16 above the air conditioning target region 15, and is supplied to the heat exchanger 32. In contact and adjusted to the desired temperature. Then, the air adjusted to a desired temperature passes through the blow chamber 22 from the heat exchange chamber 23 and is further blown to the air supply chamber 21.
給気チャンバ21の前面には、床面11から少なくとも空調対象領域15の80%の高さまで給気面40が鉛直方向に連続して形成されている。この実施の形態では、給気面40の高さh2は6mに設定されている。即ち、少なくとも空調対象領域15の80%の高さまでは給気SAの供給領域とし、空調空気の供給領域よりも上方は、置換換気の作用で給気SAを浮上させている。大型空間室10内の側方には、上下方向に延びる給気面40が横に並んで複数列形成されており、図2は、2列の給気面40が形成された状態を示している。なお、給気装置20の前面(給気チャンバ21、送風チャンバ22、熱交チャンバ23の前面)は、吸気面34および給気面40を除く部分は、例えばALCなどの通気性の無いパネルなどで塞がれている。これらパネルも、各給気装置20の前面(各チャンバ21〜23の前面)は、同一平面上になっている。なお、各パネルの裏側の空間は、例えば保守スペースとして利用することができる。   On the front surface of the air supply chamber 21, an air supply surface 40 is continuously formed in the vertical direction from the floor surface 11 to a height of at least 80% of the air-conditioning target region 15. In this embodiment, the height h2 of the air supply surface 40 is set to 6 m. That is, at least 80% of the air-conditioning target area 15 is set as a supply area of the supply air SA, and above the supply area of the conditioned air, the supply air SA is floated by the action of replacement ventilation. A plurality of rows of air supply surfaces 40 extending in the vertical direction are formed on the sides of the large space chamber 10, and FIG. 2 shows a state in which two rows of air supply surfaces 40 are formed. Yes. The front surface of the air supply device 20 (the front surface of the air supply chamber 21, the air blowing chamber 22, and the heat exchange chamber 23) is a portion excluding the intake surface 34 and the air supply surface 40, such as a non-breathable panel such as ALC. It is blocked by. Also in these panels, the front surfaces of the air supply devices 20 (the front surfaces of the chambers 21 to 23) are on the same plane. The space on the back side of each panel can be used as a maintenance space, for example.
図3に示すように、給気面40は、大型空間室10の内部から見える給気チャンバ21の前面(大型空間室10の内部から見える側面)に、パンチングメタル、メッシュなどの通気性板41を配置し、更に、通気性板41の内側(給気チャンバ21の内部となる側)に、通気性板41と適当な隙間を空けて平行に整流板42を配置した構造である。整流板42には、複数の給気口43が分布して設けられており、通気性板41と整流板42は十分な通気性を有している。このため、上述のように送風機36の稼動で熱交チャンバ23、送風チャンバ22、給気チャンバ21の順に送風された空気は、所望の温度に調節された給気SAとして、給気面40(通気性板41と整流板42)を通じて大型空間室10の内部に供給される。   As shown in FIG. 3, the air supply surface 40 is formed on the front surface of the air supply chamber 21 that can be seen from the inside of the large space chamber 10 (the side surface that can be seen from the inside of the large space chamber 10). Further, a rectifying plate 42 is arranged in parallel to the air permeable plate 41 with an appropriate gap inside the air permeable plate 41 (the side that becomes the inside of the air supply chamber 21). A plurality of air supply ports 43 are distributed in the rectifying plate 42, and the air permeable plate 41 and the rectifying plate 42 have sufficient air permeability. For this reason, as described above, the air blown in the order of the heat exchange chamber 23, the blower chamber 22, and the air supply chamber 21 by the operation of the blower 36 is used as the air supply surface 40 ( The air is supplied into the large space 10 through the air-permeable plate 41 and the rectifying plate 42).
図4に示すように、整流板42に設けられている各給気口43には、複数のフィン45がそれぞれ装着されている。図5、6に示すように、各給気口43の中央に支持部材46が設けてあり、各フィン45は、この支持部材46の周りに適当な等間隔で放射状に取り付けてある。給気口43から大型空間室10の内部に向かって吹き出す給気SAに旋回成分を与えるべく、各フィン45は給気口43の中心軸43’に対してそれぞれ傾斜して配置されており、図5と図6では、フィン45の傾斜方向が逆向きの関係になっている。   As shown in FIG. 4, a plurality of fins 45 are respectively attached to the air supply ports 43 provided in the rectifying plate 42. As shown in FIGS. 5 and 6, a support member 46 is provided at the center of each air supply port 43, and the fins 45 are radially attached around the support member 46 at appropriate equal intervals. In order to give a swirl component to the supply air SA that blows out from the air supply port 43 toward the inside of the large space chamber 10, the fins 45 are respectively inclined with respect to the central axis 43 ′ of the air supply port 43. In FIG. 5 and FIG. 6, the inclination direction of the fin 45 is in a reverse relationship.
このように、各給気口43に傾斜したフィン45を放射状に取り付けたことにより、給気チャンバ21の給気面40から大型空間室10の内部に供給する給気SAを、給気口43を通過する際に、各フィン45に沿わせて強制的に流すことができる。これにより、給気面40からから大型空間室10に向かって吹き出す給気SAに、中心軸43’を中心とする旋回成分が与えられる。   In this way, by attaching the fins 45 inclined to the air supply ports 43 in a radial manner, the air supply SA supplied from the air supply surface 40 of the air supply chamber 21 to the inside of the large space chamber 10 is supplied to the air supply ports 43. When passing through, it can be forced to flow along each fin 45. Thereby, the swirl component centering on the central axis 43 ′ is given to the air supply SA blown from the air supply surface 40 toward the large space chamber 10.
ここで、図5、6では、フィン45の傾斜方向が互いに逆向きであるため、図5に示したフィン45によっては、給気口43を通過する際に、給気面40を大型空間室10の室内側から見た場合において、反時計回転方向の旋回成分が給気SAに与えられる。一方、図6に示したフィン45によっては、給気口43を通過する際に、給気面40を大型空間室10の室内側から見た場合において、時計回転方向の旋回成分が給気SAに与えられる。   Here, in FIGS. 5 and 6, the inclination directions of the fins 45 are opposite to each other. Therefore, depending on the fins 45 shown in FIG. When viewed from the indoor side, the swirl component in the counterclockwise rotation direction is given to the supply air SA. On the other hand, depending on the fins 45 shown in FIG. 6, when the air supply surface 40 is viewed from the inside of the large space chamber 10 when passing through the air supply port 43, the swirl component in the clockwise direction is the air supply SA. Given to.
図4に示すように、この実施の形態では、整流板42には、複数の給気口43が縦横に並べて配置されている。そして、横に隣り合う給気口43同士から吹き出される給気SAの旋回成分は、互いに同じ回転方向となっている。一方、上下に隣り合う給気口43同士から吹き出される給気SAの旋回成分は、互いに逆の回転方向となっている。   As shown in FIG. 4, in this embodiment, a plurality of air supply ports 43 are arranged side by side in the rectifying plate 42 in the vertical and horizontal directions. The swirl components of the supply air SA blown out from the adjacent air supply ports 43 are in the same rotational direction. On the other hand, the swirl components of the supply air SA blown out from the upper and lower adjacent air supply ports 43 are in opposite rotation directions.
空調非対象領域16には、熱交チャンバ23の吸気面34に対向して外気給気口50が設けられている。外気給気口50は、吸気面34と同じ高さに設けられている。外気給気口50には、外調機51を備える外気ダクト52が接続されている。外調機51には、冷却コイル53、加熱コイル54、加湿ノズル55、送風機56が内蔵されている。送風機56の稼動により、大型空間室10の外部から取り込まれた外気OAが、外調機51で温度調節および湿度調節される。そしてこの外気は、外気ダクト52を経て、熱交チャンバ23の吸気面34と同じ高さに設けられた外気給気口50から熱交チャンバ23の吸気面34に向けて吹出され、大型空間室10の内部に供給される。なお、この外気給気口50は、ノズルであってもよい。   An outside air supply port 50 is provided in the air conditioning non-target region 16 so as to face the intake surface 34 of the heat exchange chamber 23. The outside air supply port 50 is provided at the same height as the intake surface 34. An outside air duct 52 including an outside air conditioner 51 is connected to the outside air supply port 50. The external air conditioner 51 includes a cooling coil 53, a heating coil 54, a humidifying nozzle 55, and a blower 56. Due to the operation of the blower 56, the outside air OA taken from the outside of the large space chamber 10 is temperature-controlled and humidity-controlled by the external air conditioner 51. The outside air is blown out from the outside air supply port 50 provided at the same height as the intake surface 34 of the heat exchange chamber 23 through the outside air duct 52 toward the intake surface 34 of the heat exchange chamber 23, 10 is supplied to the inside. The outside air supply port 50 may be a nozzle.
大型空間室10の天井面12において、外気給気口50よりも中央よりの位置に、排気口60が設けられている。排気口60は、吸気面34よりも上方に設けられている。排気口60には、送風機61を備える排気ダクト62が接続されている。送風機61の稼動により、大型空間室10の空気が、空調非対象領域16から排気口60に引き込まれ、大型空間室10の外部に排気EAが排出される。   On the ceiling surface 12 of the large space chamber 10, an exhaust port 60 is provided at a position closer to the center than the outside air supply port 50. The exhaust port 60 is provided above the intake surface 34. An exhaust duct 62 including a blower 61 is connected to the exhaust port 60. Due to the operation of the blower 61, the air in the large space chamber 10 is drawn into the exhaust port 60 from the air conditioning non-target region 16, and the exhaust EA is discharged to the outside of the large space chamber 10.
排気ダクト62に設けられている送風機61の稼動と、外調機51に内蔵されている送風機56の稼動は連動しており、大型空間室10の内部に供給される外気OAの供給量と、大型空間室10の外部に排出される排気EAの排出量が等しくなるように設定されている。   The operation of the blower 61 provided in the exhaust duct 62 and the operation of the blower 56 built in the external air conditioner 51 are linked, and the supply amount of the outside air OA supplied to the inside of the large space chamber 10, The amount of exhaust EA discharged to the outside of the large space chamber 10 is set to be equal.
さて、以上のように構成された大型空間室10内の側方に配置された給気装置20では、送風チャンバ22に内蔵された送風機36の稼動により、空調非対象領域16において大型空間室10の内部の空気が、吸気面34を通じて熱交チャンバ23内に引き込まれる。そして、熱交換器32に接触して所望の温度に調整された空気が、熱交チャンバ23、送風チャンバ22、給気チャンバ21の順に送風され、給気SAとして、給気面40を通じて大型空間室10内の空調対象領域15に供給される。この場合、給気面40における給気SAの平均風速(面風速)は例えば0.7m/sにされる。   Now, in the air supply device 20 arranged on the side in the large space 10 configured as described above, the large space 10 is provided in the air conditioning non-target region 16 by the operation of the blower 36 built in the blow chamber 22. Is drawn into the heat exchange chamber 23 through the intake surface 34. Then, the air adjusted to a desired temperature in contact with the heat exchanger 32 is blown in the order of the heat exchange chamber 23, the air blowing chamber 22, and the air supply chamber 21, and is supplied as a supply air SA through the air supply surface 40. It is supplied to the air-conditioning target area 15 in the room 10. In this case, the average wind speed (surface wind speed) of the supply air SA on the supply surface 40 is set to 0.7 m / s, for example.
ここで、給気面40は、大型空間室10の床面11から少なくとも空調対象領域15の80%の高さまで鉛直方向に連続して形成されている。上述したように、大型空間室10内の側方には、上下方向に延びる給気面40が横に並んで複数列形成されており、各給気面40から、鉛直方向に連続した状態で給気SAが吹出され、各給気面40から吹出された給気SAは、互いに平行に層状に吹出される。また、各給気面40同士の間を塞いでいるパネルの前面近傍の空気は、こうして各給気面40から吹出された層状の給気SAに誘引されることになる。このように給気面40から大型空間室10内の空調対象領域15に給気SAを吹出すと、空調対象領域15内の空気が誘引されて一緒に移動する誘引作用がはたらく。この場合、給気面40に分布して設けられた複数の各給気口43にフィン45が取り付けられているので、各給気口43から吹き出された給気SAに旋回成分が与えられ、給気SAに誘引される空調対象領域15内の空気の誘引量(誘引比)が増加する。そして、このように誘引量が増加することに伴い、運動量保存則に従って給気SAの速度は、空調対象領域15に吹出された後、直ちに低減し、速やかに減速することとなる。そして、空調対象領域15内では、給気SAの風速は、0.5m/s以下となる。   Here, the air supply surface 40 is continuously formed in the vertical direction from the floor surface 11 of the large space chamber 10 to a height of at least 80% of the air-conditioning target region 15. As described above, a plurality of rows of air supply surfaces 40 extending in the vertical direction are formed on the side of the large space chamber 10 in a horizontal direction, and are continuous from each air supply surface 40 in the vertical direction. The supply air SA is blown out, and the supply air SA blown out from the respective supply surfaces 40 is blown out in a layered manner in parallel with each other. In addition, the air in the vicinity of the front surface of the panel closing the space between the air supply surfaces 40 is attracted to the layered air supply SA blown out from the air supply surfaces 40 in this way. When the supply air SA is blown out from the air supply surface 40 to the air-conditioning target area 15 in the large space room 10 as described above, an attraction action is performed in which the air in the air-conditioning target area 15 is attracted and moves together. In this case, since the fin 45 is attached to each of the plurality of air supply ports 43 distributed on the air supply surface 40, a swirl component is given to the air supply SA blown from each air supply port 43, The amount of air attraction (attraction ratio) in the air-conditioning target area 15 that is attracted by the supply air SA increases. As the amount of attraction increases in this way, the speed of the supply air SA is immediately reduced after being blown out to the air-conditioning target area 15 in accordance with the momentum conservation law, and is quickly decelerated. And in the air-conditioning object area | region 15, the wind speed of supply air SA will be 0.5 m / s or less.
こうして、各給気口43から吹き出された給気SAが、大型空間室10の床面11上に置かれている大型機械13に向けて広がりながら低速になって供給され、その結果、大型機械13の周囲全体を包み込むように給気SAが供給されていく。   Thus, the supply air SA blown out from each supply port 43 is supplied at a low speed while spreading toward the large machine 13 placed on the floor surface 11 of the large space chamber 10, and as a result, the large machine The supply air SA is supplied so as to wrap around the entire periphery of 13.
また、各給気口43から吹き出された給気SAへの誘引量が増加することに伴って上下温度差は更に小さくなり、空調対象領域15の全体がほぼ均一の温度に空調され、大型機械の精密な組み立てや調整などに適した温度環境が実現される。また、誘引量の増加により、空調対象領域15をなるべく少風量で効率よく空調でき、省エネルギに貢献することができる。更に、少風量によりドラフトの発生を抑制でき、レーザ測定における計測誤差や、被処理物の振動などを抑制することができる。   Further, as the amount of attraction to the supply air SA blown out from each air supply port 43 increases, the temperature difference between the top and bottom is further reduced, and the entire air-conditioning target area 15 is air-conditioned to a substantially uniform temperature, which is a large machine. A temperature environment suitable for precise assembly and adjustment is realized. Further, by increasing the amount of attraction, the air-conditioning target area 15 can be efficiently air-conditioned with as little air flow as possible, which can contribute to energy saving. Furthermore, drafting can be suppressed by a small air volume, and measurement errors in laser measurement, vibration of the object to be processed, and the like can be suppressed.
一方、空調対象領域15には、大型機械13の他、発熱体としての人や各種機器などが存在しているので、空調対象領域15に供給された給気SAは、やがて加熱され、緩やかに上昇する。その上昇流により、空調対象領域15内で生じた塵埃やガスなどの汚染物質が大型空間室10内の上方に移動し、空調非対象領域16へ搬送される。   On the other hand, in the air-conditioning target area 15, in addition to the large machine 13, people and various devices as heating elements are present, so the air supply SA supplied to the air-conditioning target area 15 is heated and gradually relaxed. To rise. Due to the upward flow, contaminants such as dust and gas generated in the air-conditioning target area 15 move upward in the large space chamber 10 and are conveyed to the air-conditioning non-target area 16.
そして、空調非対象領域16では、大型空間室10の上部に溜まった空気(加熱された空気)の一部が、送風機61の稼動により、排気口60と排気ダクト62を通じて大型空間室10の外部に排気EAとして排出される。また、大型空間室10の上部に溜まった空気の残りは、大型空間室10の外部から外調機51および外気ダクト52を経て空調非対象領域16に取り込まれた外気OAと共に、吸気面34から熱交チャンバ23内に取り込まれる。そして、熱交換器32に接触して所望の温度に調整された空気が、熱交チャンバ23、送風チャンバ22、給気チャンバ21の順に送風され、給気SAとして、給気面40を通じて大型空間室10内の空調対象領域15に供給される。   In the air conditioning non-target area 16, a part of the air (heated air) accumulated in the upper part of the large space chamber 10 is externally connected to the outside of the large space chamber 10 through the exhaust port 60 and the exhaust duct 62 by the operation of the blower 61. To exhaust EA. In addition, the remainder of the air accumulated in the upper part of the large space chamber 10 comes from the intake surface 34 together with the outside air OA taken into the air conditioning non-target region 16 from the outside of the large space chamber 10 via the external air conditioner 51 and the outside air duct 52. It is taken into the heat exchange chamber 23. Then, the air adjusted to a desired temperature in contact with the heat exchanger 32 is blown in the order of the heat exchange chamber 23, the air blowing chamber 22, and the air supply chamber 21, and is supplied as a supply air SA through the air supply surface 40. It is supplied to the air-conditioning target area 15 in the room 10.
こうして、空調対象領域15に給気SAを供給しつつ、大型空間室10の上部から、加熱空気と共に塵埃やガスなどの汚染物質を排気することにより、大型空間室10内の換気が行われ、空調対象領域15は清浄な給気SAの環境に保たれる。また、空調対象領域15は、大型機械の精密な組み立てや調整などに適した均一な温度環境に維持される。   In this way, ventilation in the large space chamber 10 is performed by exhausting contaminants such as dust and gas together with heated air from the upper portion of the large space chamber 10 while supplying the air supply SA to the air-conditioning target region 15. The air-conditioning target area 15 is maintained in a clean air supply SA environment. The air-conditioning target area 15 is maintained in a uniform temperature environment suitable for precise assembly and adjustment of large machines.
加えて、この置換換気設備1では、給気装置20の背面(給気チャンバ21、送風チャンバ22、熱交チャンバ23の背面)を大型空間室10の側壁面24を利用して塞いでいるので、設備費の低減効果が得られる。また、大型空間室10内の側方に形成された複数列の給気面40から、誘引作用を利用して給気SAの供給を行うことにより、例えば給気チャンバ21の前面全体を給気面とした場合に比べて給気量を抑制でき、設備費およびランニングコストを低減できる。また、給気面40が大型空間室10内下方の空調対象領域15に配置され、吸気面34が大型空間室10内上方の空調非対象領域16に配置されているので、気流のショートサーキットがない。この場合、給気面40と吸気面34を垂直線上に配置すれば、熱交換器32や送風機36などの装置類が同じ場所に集約されて保守に便利であり、吸気面34を天井面12に設けた場合に比べて、還気ダクト等を節約できる。なお、吸気面34の近傍に外気給気口50を配置すれば、装置が集約されコンパクトとなる。また、外気給気口50から一旦空調非対象領域16に外気OAを供給してから熱交チャンバ23内に取り込んでいるため、室内自由空間(空調非対象領域16)で還気と外気OAが混合され、混気箱を省略できる。なお、給気チャンバ21、送風チャンバ22、熱交チャンバ23の前面が面一となれば意匠上好ましい。また、排気口60が外気給気口50よりも大型空間室10の中央よりに設けられているので、外気給気口50から供給された外気OAは、排気口60から排気されることなく、熱交チャンバ23内に確実に取り込まれる。   In addition, in this replacement ventilation facility 1, the back surface of the air supply device 20 (the back surface of the air supply chamber 21, the blower chamber 22, and the heat exchange chamber 23) is blocked using the side wall surface 24 of the large space chamber 10. The effect of reducing equipment costs can be obtained. Further, by supplying air supply SA from a plurality of rows of air supply surfaces 40 formed laterally in the large space chamber 10 by using an attracting action, for example, the entire front surface of the air supply chamber 21 is supplied. The amount of air supply can be suppressed as compared with the case where the surface is used, and the equipment cost and running cost can be reduced. In addition, since the air supply surface 40 is disposed in the air conditioning target region 15 below the large space chamber 10 and the air intake surface 34 is disposed in the air conditioning non-target region 16 above the large space chamber 10, a short circuit of airflow is generated. Absent. In this case, if the air supply surface 40 and the air intake surface 34 are arranged on a vertical line, devices such as the heat exchanger 32 and the blower 36 are gathered at the same place for convenient maintenance, and the air intake surface 34 is connected to the ceiling surface 12. Compared with the case where it is provided, it is possible to save a return air duct and the like. If the outside air supply port 50 is arranged in the vicinity of the intake surface 34, the apparatus is integrated and compact. In addition, since the outside air OA is once supplied from the outside air supply port 50 to the air conditioning non-target area 16 and then taken into the heat exchange chamber 23, the return air and the outside air OA are generated in the indoor free space (air conditioning non-target area 16). It is mixed and the air-fueling box can be omitted. In addition, it is preferable in terms of design if the front surfaces of the air supply chamber 21, the air blowing chamber 22, and the heat exchange chamber 23 are flush with each other. In addition, since the exhaust port 60 is provided at the center of the large-sized space 10 than the outside air supply port 50, the outside air OA supplied from the outside air supply port 50 is not exhausted from the exhaust port 60. It is reliably taken into the heat exchange chamber 23.
また、熱交チャンバ23の内部に形成される点検用の通路35をなるべく広くするために、熱交チャンバ23(ケーシング)の前面(吸気面34)の厚みはなるべく薄く製作することが望ましい。また、熱交チャンバ23の側面には通路35に出入りするための扉や梯子を設けても良い。一方、給気装置20の厚さは例えば900mmとし、給気装置20の前面を塞ぐALCなどのパネルの厚さは例えば100mmとする。なお、ALCパネルの他、断熱材を挟んだ構造のものを採用し熱ロスを防止しても良い。また、点検用の通路35を熱交チャンバ23の外部に設けても良い。その場合、熱交チャンバ23(ケーシング)の厚みをなるべく薄く製作することにより、通路35を広くとることができる。   Further, in order to make the inspection passage 35 formed inside the heat exchange chamber 23 as wide as possible, it is desirable to make the front surface (intake surface 34) of the heat exchange chamber 23 (casing) as thin as possible. Further, a door or ladder for entering and exiting the passage 35 may be provided on the side surface of the heat exchange chamber 23. On the other hand, the thickness of the air supply device 20 is, for example, 900 mm, and the thickness of a panel such as ALC that closes the front surface of the air supply device 20 is, for example, 100 mm. In addition, the thing of the structure which pinched | interposed the heat insulating material other than the ALC panel may be employ | adopted, and a heat loss may be prevented. Further, the inspection passage 35 may be provided outside the heat exchange chamber 23. In that case, the passage 35 can be widened by manufacturing the heat exchange chamber 23 (casing) as thin as possible.
熱交チャンバ23の底板は送風チャンバ22の天板を兼ね、例えば厚み1.2mmの鋼板で形成する。熱交換器32(加熱コイル30、冷却コイル31)は、熱交チャンバ23の内において大型空間室10の側壁面24の方向に寄せれば、通路35を広くすることができる。熱交チャンバ23の吸気面34は、例えば開口率66%のパンチングメタルを用い、空気の吸込口の機能を保証するとともに、機器類の保守をする作業員等の歩行者の転落防止を図る。更に、熱交チャンバ23の底面を、大型空間室10の側壁面24に向って下がるように傾斜させ、ドレンパンを兼用させることができる。もっとも、大型空間室10内に供給される外気OAは、外調機51により湿度制御されるため、冷却コイル31は冷熱媒の流量制御などで無結露に維持され、このドレンパンは試運転時やコイル交換の際の水抜き時にのみ機能することになる。   The bottom plate of the heat exchange chamber 23 also serves as the top plate of the blower chamber 22 and is formed of, for example, a steel plate having a thickness of 1.2 mm. If the heat exchanger 32 (the heating coil 30 and the cooling coil 31) is moved toward the side wall surface 24 of the large space chamber 10 in the heat exchange chamber 23, the passage 35 can be widened. The intake surface 34 of the heat exchange chamber 23 uses, for example, a punching metal with an aperture ratio of 66% to guarantee the function of the air suction port and to prevent a pedestrian such as a worker who maintains equipment from falling. Furthermore, the bottom surface of the heat exchanger chamber 23 can be inclined so as to be lowered toward the side wall surface 24 of the large space 10, and the drain pan can also be used. However, since the outside air OA supplied into the large space 10 is humidity-controlled by the external air conditioner 51, the cooling coil 31 is kept non-condensing by controlling the flow rate of the cooling medium. It will only work when draining during replacement.
なお、熱交換器32(加熱コイル30、冷却コイル31)はそれぞれ流量制御弁を備え、負荷状況に応じて個別制御可能とされる。すなわち、生産装置廻りの複数のセンサの信号を各加熱コイル30、各冷却コイル31の弁のコントローラで共用しているが、低負荷の際には一部のコイルチャンバ(加熱コイル30、冷却コイル31)を低負荷運転できるようにする。また、送風チャンバ22内の送風機36は、インバータ等を備えず定風量で運転される。   The heat exchangers 32 (heating coil 30 and cooling coil 31) are each provided with a flow control valve, and can be individually controlled according to the load status. That is, the signals of a plurality of sensors around the production apparatus are shared by the controllers of the valves of the heating coils 30 and the cooling coils 31, but some coil chambers (the heating coil 30 and the cooling coil are used when the load is low. 31) can be operated at low load. The blower 36 in the blower chamber 22 is operated with a constant air flow without an inverter or the like.
図7に示すように、給気チャンバ21の前面に形成される給気面40の下部に、例えば整流布65などの給気の抵抗となる部材が取り付けられていても良い。この場合、床面11から例えば2mの高さまで整流布65を取り付ける。これは、給気面40の下部では、送風機36から吹き降ろされる気流の流出が、給気面40の上部に比べて激しいため、給気面40の上下方向における給気風量・風速の均一化を図るものである。   As shown in FIG. 7, a member serving as air supply resistance such as a rectifying cloth 65 may be attached to a lower portion of the air supply surface 40 formed on the front surface of the air supply chamber 21. In this case, the rectifying cloth 65 is attached from the floor surface 11 to a height of 2 m, for example. This is because, at the lower part of the air supply surface 40, the outflow of the air flow blown down from the blower 36 is more intense than the upper part of the air supply surface 40. Is intended.
送風チャンバ22と熱交チャンバ23は、ファンコイルユニットとして一体に構成されてもよく、また、上部に送風チャンバ22、下部に熱交チャンバ23と積層順を逆にしてもよい。通路35を熱交チャンバ23内の室内側に設けたが、例えば送風機36を側部からの両吸込型として送風チャンバ22のケーシングを省略すれば、送風チャンバ22の底面を通路35とすることもできる。通路35へは、給気チャンバ21側部に昇降階段を設けるか、キャットウォークから通路を渡してもよい。   The blower chamber 22 and the heat exchange chamber 23 may be integrally formed as a fan coil unit, and the stacking order may be reversed with the blower chamber 22 at the upper part and the heat exchange chamber 23 at the lower part. Although the passage 35 is provided on the indoor side in the heat exchange chamber 23, for example, if the blower 36 is a double suction type from the side and the casing of the blower chamber 22 is omitted, the bottom surface of the blower chamber 22 may be the passage 35. it can. The passage 35 may be provided with an elevating step on the side of the air supply chamber 21 or may be passed from the catwalk.
(比較例1)
図8に示すように、比較例1では、大型空間室10の内部上方に設置したノズル70から吹出した気流(給気SA)により換気を行うデリベント換気を行った。大型空間室10内の床面11から高さ14mの位置に27個のノズル70を縦横方向に等間隔で設置した。各ノズル70の設置間隔は1m×1mとした。吹出し総面積は27mである。給気SAの総風量834000m/h、吹出し風速8.6m/sとした。また、床面11から高さ9mの位置に、幅9m×高さ2mの排気口60を10箇所に設けた。総排気量834000m/hとした。
(Comparative Example 1)
As shown in FIG. 8, in the comparative example 1, the deliberate ventilation is performed in which ventilation is performed by the airflow (supply air SA) blown from the nozzle 70 installed in the upper part of the large space chamber 10. Twenty-seven nozzles 70 were installed at equal intervals in the vertical and horizontal directions at a height of 14 m from the floor surface 11 in the large space chamber 10. The installation interval of each nozzle 70 was 1 m × 1 m. The total area balloon is 27m 2. The total air volume of the supply air SA was 834000 m 3 / h, and the blowing air speed was 8.6 m / s. Further, exhaust ports 60 each having a width of 9 m and a height of 2 m were provided at 10 positions at a position 9 m from the floor surface 11. The total displacement was 834,000 m 3 / h.
(比較例2)
図9に示すように、比較例2では、大型空間室10の内部側方に給気装置71の前面72から微風速で空調空気(給気SA)を吹出して換気を行う置換換気を行った。給気装置71の前面72は、パンチングメタルで構成した。なお、給気SAに旋回成分を与える手段は備えていない。大型空間室10内の床面11から0.1mの高さに、幅9〜35m×高さ7.5mの給気面を7箇所に設けた。吹出し総面積は810mである。給気SAの総風量834000m/h、吹出し風速0.29m/sとした。また、床面11から高さ9mの位置に、幅9m×高さ2mの排気口60を10箇所に設けた。総排気量834000m/hとした。
(Comparative Example 2)
As shown in FIG. 9, in Comparative Example 2, displacement ventilation was performed in which air-conditioned air (supply air SA) was blown from the front surface 72 of the air supply device 71 at a slight wind speed toward the inside of the large space 10. . The front surface 72 of the air supply device 71 is made of punching metal. Note that there is no means for giving a swirl component to the supply air SA. Air supply surfaces having a width of 9 to 35 m and a height of 7.5 m were provided at seven locations at a height of 0.1 m from the floor surface 11 in the large space chamber 10. The total blowing area is 810 m 2 . The total air volume of the supply air SA was 834000 m 3 / h, and the blowing air speed was 0.29 m / s. Further, exhaust ports 60 each having a width of 9 m and a height of 2 m were provided at 10 positions at a position 9 m from the floor surface 11. The total displacement was 834,000 m 3 / h.
(実施例)
図10に示すように、実施例では、給気チャンバ21の前面に設けられた給気面40から旋回成分を与えた給気SAを吹出して換気を行う誘引型置換換気を行った。給気面40は、各給気口に複数のフィンを装着した整流板とパンチングメタルの二重構造である。大型空間室10内の床面11上0.1mから7.5mの高さまで上下方向に連続する給気面40を10箇所に設けた。吹出し総面積は337.5mである。給気SAの総風量834000m/h、吹出し風速0.29m/sとした。また、床面11から高さ9mの位置に、幅9m×高さ2mの排気口60を10箇所に設けた。総排気量834000m/hとした。
(Example)
As shown in FIG. 10, in the embodiment, attraction type replacement ventilation is performed in which ventilation is performed by blowing out supply air SA to which a swirl component is supplied from an air supply surface 40 provided in front of the air supply chamber 21. The air supply surface 40 has a double structure of a rectifying plate and a punching metal each having a plurality of fins attached to each air supply port. The air supply surface 40 which continued in the up-down direction from 0.1 m to 7.5 m on the floor surface 11 in the large space chamber 10 was provided in ten places. The total blowing area is 337.5 m 2 . The total air volume of the supply air SA was 834000 m 3 / h, and the blowing air speed was 0.29 m / s. Further, exhaust ports 60 each having a width of 9 m and a height of 2 m were provided at 10 positions at a position 9 m from the floor surface 11. The total displacement was 834,000 m 3 / h.
比較例1、2および実施例に使用した大型空間室10は、東西に60m、南北に80m、天井高さ16〜17m(一部は天井高さ12mで2階に居室あり)である。この大型空間室10では、数μmの部材長さ精度を確保するための温度精度や静電気防止や錆抑制のための湿度精度に加え、超音波測長器の測定誤差軽減のため、既存室よりも要求仕様の厳しい気流速度が提示され、これらを両立できるかどうかが重要評価項目となった。図11に示すように、大型空間室10の3箇所(地点1〜3)において、上下方向の温度分布と、風速分布を解析した。解析は、CFD(数値流体解析)によって行った。   The large-sized space room 10 used in Comparative Examples 1 and 2 and Examples is 60 m in the east and west, 80 m in the north and south, and a ceiling height of 16 to 17 m (some have a ceiling height of 12 m and a room on the second floor). In this large space chamber 10, in addition to temperature accuracy to ensure the member length accuracy of several μm, humidity accuracy to prevent static electricity and rust suppression, in addition to existing chambers to reduce measurement errors of ultrasonic measuring instruments The airflow velocity with strict requirements was also presented, and whether or not these were compatible was an important evaluation item. As shown in FIG. 11, the temperature distribution in the vertical direction and the wind speed distribution were analyzed at three locations (points 1 to 3) of the large space chamber 10. The analysis was performed by CFD (computational fluid analysis).
比較例1、2および実施例の温度分布の解析結果を図12に示す。比較例1、2および実施例の風速分布の解析結果を図13に示す。   The analysis result of the temperature distribution of Comparative Examples 1 and 2 and the example is shown in FIG. The analysis result of the wind speed distribution of Comparative Examples 1 and 2 and the example is shown in FIG.
比較例1のような、一般的に大空間で用いられるノズル方式のデリベント換気では、室内空気が十分に混合され、温度分布は均一にできる。その反面、空間内風速が速くなり、0.6m/sを超えるため要求仕様を満足できないことがわかった。これは、天井から給気するデリベント換気では、吹出し風速が速いことに加え、冷気の比重差により、下向きの吹出し気流は減衰しにくいためである。   In the case of the nozzle-type ventilating ventilation generally used in a large space as in the comparative example 1, the room air is sufficiently mixed and the temperature distribution can be made uniform. On the other hand, it became clear that the required specifications could not be satisfied because the wind speed in the space became faster and exceeded 0.6 m / s. This is because in the ventilated ventilation supplied from the ceiling, the blowing air velocity is high and the downward blowing air flow is not easily attenuated due to the difference in specific gravity of the cold air.
一方、比較例2のパンチング方式の置換換気と、給気に旋回成分を与える実施例の誘引型置換換気方式では、給気面よりも上部では温度成層が形成されるものの、給気面と同じ高さまでは、平面温度は±1℃程度、上下方向の温度分布も1.0℃程度となり要求を満足している。また、風速においても制御対象エリア内は0.6m/s以下となることを確認した。これにより、比較例2のパンチング方式の置換換気と、給気に旋回成分を与える実施例の誘引型置換換気方式は、要求仕様を満足することが判明した。しかし、実施例の誘引型置換換気方式は、比較例2のパンチング方式の置換換気に比べて、吹出し面積が1/3程度となり、建築コストの面や設備の納まりに有利である。また、冬期の低負荷時の暖房運転において、比較例2のパンチング方式の置換換気では、暖かい給気は、室上部へと上昇し、コールドドラフト等によって下に溜まろうとする冷気を取り除くことが困難で、別の機構を設けるなどの対策を考慮する必要性がある。以上を総合し、誘引の増加によって、暖房効果も高めた実施例の誘引型置換換気方式が有利であることが分かった。   On the other hand, in the replacement ventilation of the punching method of Comparative Example 2 and the attraction type replacement ventilation method of the embodiment that gives the swirl component to the supply air, the temperature stratification is formed above the supply surface, but the same as the supply surface At the height, the planar temperature is about ± 1 ° C, and the temperature distribution in the vertical direction is about 1.0 ° C, which satisfies the requirements. Also, it was confirmed that the inside of the control target area was 0.6 m / s or less even at the wind speed. Thereby, it turned out that the substitution type ventilation system of the punching system of the comparative example 2 and the attraction type substitution ventilation system of the Example which gives a turning component to supply air satisfy | fill a requirement specification. However, the attraction type replacement ventilation system of the embodiment has an air discharge area of about 1/3 compared to the punching system replacement ventilation of Comparative Example 2, which is advantageous in terms of construction cost and accommodation of equipment. Further, in the heating operation at low load in winter, in the replacement ventilation of the punching method of Comparative Example 2, the warm air supply rises to the upper part of the room, and it is difficult to remove the cold air that tends to accumulate below by a cold draft or the like. Therefore, it is necessary to consider measures such as providing another mechanism. By combining the above, it has been found that the attraction-type replacement ventilation system of the embodiment in which the heating effect is enhanced by the increase in attraction is advantageous.
本発明は、超音波測定器などといった大型機械の精密な組み立てや調整などを高精度で行うための大型空間室に有用である。   INDUSTRIAL APPLICABILITY The present invention is useful for a large space room for performing precise assembly and adjustment of a large machine such as an ultrasonic measuring instrument with high accuracy.
SA 給気
OA 外気
EA 排気
1 置換換気設備
10 大型空間室10
11 床面
12 天井面
13 大型機械
15 空調対象領域
16 空調非対象領域
19 流路
20 給気装置
21 給気チャンバ
22 送風チャンバ
23 熱交チャンバ
24 側壁面
30 加熱コイル
31 冷却コイル
32 熱交換器
34 吸気面
35 通路
36 送風機
40 給気面
41 通気性板
42 整流板
43 給気口
45 フィン
46 支持部材
50 外気給気口
51 外調器
52 外気ダクト
60 排気口
61 送風機
62 排気ダクト
SA Air supply OA Outside air EA Exhaust 1 Replacement ventilation equipment 10 Large space room 10
DESCRIPTION OF SYMBOLS 11 Floor surface 12 Ceiling surface 13 Large machine 15 Air-conditioning object area | region 16 Air-conditioning non-object area | region 19 Flow path 20 Air supply apparatus 21 Air supply chamber 22 Air blow chamber 23 Heat exchange chamber 24 Side wall surface 30 Heating coil 31 Cooling coil 32 Heat exchanger 34 Air intake surface 35 Passage 36 Blower 40 Air supply surface 41 Breathable plate 42 Rectifier plate 43 Air supply port 45 Fin 46 Support member 50 External air supply port 51 External conditioner 52 External air duct 60 Exhaust port 61 Blower 62 Exhaust duct

Claims (5)

  1. 下から順に給気チャンバ、送風チャンバ、熱交チャンバを重ねた構成の給気装置であって、
    前記熱交チャンバの底板は鋼板で形成され、前記送風チャンバの上面と前記熱交チャンバの下面は一部の面積で連通しており、
    前記熱交チャンバの内部には、熱交換器が設けられ、かつ、人が通ることができる通路が形成されていることを特徴とする、給気装置。
    An air supply device having a structure in which an air supply chamber, a blower chamber, and a heat exchange chamber are stacked in order from the bottom,
    The bottom plate of the heat exchange chamber is formed of a steel plate, and the upper surface of the air blowing chamber and the lower surface of the heat exchange chamber communicate with each other in a partial area,
    An air supply device, wherein a heat exchanger is provided in the heat exchange chamber and a passage through which a person can pass is formed.
  2. 室内の側方に、請求項1の給気装置が複数台設置されており、
    各熱交チャンバの前面は吸気面であり、同一平面上になっていることを特徴とする、給気装置。
    A plurality of air supply devices of claim 1 are installed on the side of the room,
    An air supply device, wherein a front surface of each heat exchange chamber is an intake surface and is on the same plane.
  3. 前記給気チャンバ、送風チャンバ、熱交チャンバの背部は、大型空間室の側壁面で塞がれ、
    前記熱交換器は、前記熱交チャンバの内部において前記大型空間室の側壁面の方向に寄せて配置されていることを特徴とする、請求項1または2に記載の給気装置。
    The back portions of the air supply chamber, the air blowing chamber, and the heat exchange chamber are blocked by the side wall surface of the large space chamber,
    3. The air supply device according to claim 1, wherein the heat exchanger is arranged in the direction of the side wall surface of the large space chamber inside the heat exchange chamber .
  4. 前記熱交チャンバの前面に形成された吸気面をパンチングメタルまたはメッシュで構成し、
    前記熱交チャンバの内部において、前記吸気面の内側には、前記熱交換器との間に、人が通ることができる通路が形成されていることを特徴とする、請求項1〜3のいずれかに記載の給気装置。
    The intake surface formed on the front surface of the heat exchange chamber is composed of punching metal or mesh,
    The inside of the said heat exchanger chamber WHEREIN: The channel | path which a person can pass between the said heat exchangers is formed in the inside of the said intake surface, The any one of Claims 1-3 characterized by the above-mentioned. The air supply device according to the above.
  5. 下から順に給気チャンバ、熱交チャンバ、送風チャンバを連通させて重ねた構成の給気装置であって、
    前記送風チャンバには両吸込型の送風機が設けられ、
    前記熱交チャンバの底板は鋼板で形成され、前記送風チャンバの上面と前記熱交チャンバの下面は一部の面積で連通しており、
    前記送風チャンバの底面を人が通ることができる通路に形成したことを特徴とする、給気装置。
    An air supply device having a configuration in which an air supply chamber, a heat exchange chamber, and a blower chamber are communicated and stacked in order from the bottom,
    The suction chamber is provided with a double suction type blower,
    The bottom plate of the heat exchange chamber is formed of a steel plate, and the upper surface of the air blowing chamber and the lower surface of the heat exchange chamber communicate with each other in a partial area,
    An air supply device, wherein a passage through which a person can pass is formed in the bottom surface of the blower chamber.
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JP2582866B2 (en) * 1988-07-11 1997-02-19 株式会社竹中工務店 Supply / exhaust method of clean room for factories using hazardous chemicals
JP4294784B2 (en) * 1999-04-07 2009-07-15 高砂熱学工業株式会社 Air conditioning equipment and air conditioning method
JP2002130730A (en) * 2000-10-30 2002-05-09 Kazutaro Oyabu Improvement of lower outlet and upper inlet type air conditioner
JP2002181351A (en) * 2000-12-15 2002-06-26 Shimizu Corp Outside air treating unit, and air conditioning facility
JP3891116B2 (en) * 2003-01-08 2007-03-14 株式会社日立製作所 Outside air intake treatment equipment for buildings
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