JP3491246B2 - Air volume adjustment device for floor air-conditioning equipment - Google Patents

Air volume adjustment device for floor air-conditioning equipment

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Publication number
JP3491246B2
JP3491246B2 JP05909096A JP5909096A JP3491246B2 JP 3491246 B2 JP3491246 B2 JP 3491246B2 JP 05909096 A JP05909096 A JP 05909096A JP 5909096 A JP5909096 A JP 5909096A JP 3491246 B2 JP3491246 B2 JP 3491246B2
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JP
Japan
Prior art keywords
air
floor
room
conditioning
air volume
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP05909096A
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Japanese (ja)
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JPH09250801A (en
Inventor
岩下昇一
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Shimizu Corp
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Shimizu Corp
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Priority to JP05909096A priority Critical patent/JP3491246B2/en
Publication of JPH09250801A publication Critical patent/JPH09250801A/en
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Publication of JP3491246B2 publication Critical patent/JP3491246B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Central Air Conditioning (AREA)
  • Duct Arrangements (AREA)
  • Air Conditioning Control Device (AREA)

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、全面床吹出し方
式、すなわち空調用の冷温風を二重床から室内へゆるや
かに且つ均一に送り込むとともに、室内ではその冷温風
を自然の空気の流れに乗せて効率良く快適な空調を行う
技術分野に属する。 【0002】 【従来の技術】近年のオフィスビルの空調においては、
吹出口近傍の局部的な温度分布或いは遍在するOA機器
等からの発熱による不均一な温度分布の問題や、パーテ
ィション、家具等の存在による気流の乱れの問題や、床
とくにカーペットを敷いた床面から巻上がる塵挨、ダ
ニ、カビ或いはタバコの煙、体臭、呼気等の汚染物質の
問題等を解決し、クリーンで快適な空調環境を実現する
ことが重要な課題となっている。 【0003】ところが、従来の一般の空調方式は、天井
吹出し方式にしても床吹出し方式にしても、室内の空気
をスポット型の吹出口から給気の勢いで積極的に攪拌す
る完全混合型の方式であり、室内で発生或いは流入した
熱を伴う汚染物質を給気によって希釈、拡散を行うた
め、汚染物質を完全に除去することは困難である。汚染
物質をある程度除去するには換気回数を増加させれば可
能ではあるが、所望とする室内温度を維持するために
は、吹出し風量を多くしたり、給気温度を冷房の場合に
はかなり低く、暖房の場合にはかなり高くしなければな
らず、設備の大型化やエネルギー消費の増加を招く。 【0004】この問題を解決するために、特開平4−1
61749号公報においては、床全面および天井全面を
多孔板とし、二重床から低風速で室内に給気し天井面に
向けて一様に押し出すピストンフローを形成することに
より、空気質を改善させる提案をしている。 【0005】 【発明が解決しようとする課題】上記特開平4−161
749号公報の空調方式においては、スポット型の吹出
口を多数配置する床吹出し方式と比較して、気流感を感
じさせないようにすることができる反面、熱負荷が極端
に遍在する場合や、個人的に気流を欲する場合に対する
対応が困難であるという問題を有している。 【0006】本発明は、上記問題を解決するものであっ
て、空調用の冷温風を二重床から室内へゆるやかに且つ
均一に送り込むとともに、室内ではその冷温風を自然の
空気の流れに乗せて効率良く快適な空調を行う空調方式
において、熱負荷が極端に遍在する場合や、個人的に気
流を欲する場合に対する対応を容易に行うことができ、
最適な空調環境を実現することができる床吹出し空調設
備の風量調整装置を提供することを目的とするものであ
る。 【0007】 【課題を解決するための手段】そのために、本発明の床
吹出し空調設備の風量調整装置は、室の下部に形成され
た二重床と、該二重床を構成する床部材の全面に設けら
れた多数の吹出孔と、前記床部材上に敷設された通気性
のカーペットとを備え、空調用の冷温風を前記二重床内
に給気し、前記吹出孔から室内に吹き出す床吹出し空調
設備において、前記床部材を貫通して所定箇所に配設さ
れ、複数の長孔からなる吹出孔が形成された固定プレー
、該固定プレート上に移動可能に設けられ、複数の円
孔からなる移動プレートとを備え、前記移動プレートを
移動させることにより吹出風量を調整することを特徴と
する。 【0008】 【発明の実施の形態】以下、本発明の実施の形態を図面
を参照しつつ説明する。図1および図2は、本発明の全
面床吹出し方式空調設備の1例を示し、図1は模式的断
面図、図2は風量調整装置を示す図である。 【0009】図1において、室1は、建物の上下のスラ
ブ3、4の間に形成されている。室1の下部には二重床
6が形成され、二重床6を構成する床部材5には全面に
多数の吹出孔5aが設けられている。吹出孔5aの直径
は10mm程度で、吹出孔5aの面積の合計は床部材5
全体の面積の1.5%以上を確保する必要がある。1.
5%未満であると空気抵抗が急増し極端な圧力損失が生
じるからである。 【0010】室1の上部には、複数の排気口7aを有す
る天井部材7が配設され、天井部材7の上部に排気通路
8が形成されている。なお、本例においては、天井部材
7に複数の排気口7aを設けているが、壁の上部に排気
口を設けたり、天井部材7と壁の双方に排気口を設けて
もよく、要するに、給気側および排気側にダクトを設け
ることなく室内への給排気ができるように構成する。 【0011】機械室11内には、フィルタ12、熱交換
器13および送風機14を有する空調機15が設置さ
れ、送風機14の給気側は二重床6内に接続され、吸気
側は排気通路8に接続されている。なお、熱交換器13
における給気温度の制御は、冷温水コイル方式の場合に
は流量調整弁の制御であり、冷媒方式の場合には冷媒流
量の制御である。そして、二重床6の床部材5の所定箇
所には、本発明の特徴である風量調整装置16が設けら
れている。風量調整装置16は、図では熱負荷の大きい
窓部9近傍と、熱負荷が小さい箇所に設けているが、こ
れに限定されるものではなく、必要に応じて複数の箇所
に配置される。 【0012】図2は、風量調整装置の例を示し、図2
(A)は断面図、図2(B)は斜視図である。床部材5
上には、通気性のカーペット17が敷設され、床部材5
を貫通して風量調整装置16が装着されている。 【0013】風量調整装置16は、床部材5に取り付け
られた支持金具18と、支持金具18上に固定された固
定プレート19と、固定プレート19上に移動可能に設
けられた移動プレート20とからなる。固定プレート1
9には複数の長孔からなる吹出孔19aが形成されると
共に、調節摘み21が取り付けられ、移動プレート20
には複数の円孔からなる吹出孔20a及び調節用長孔2
0bが形成されて、固定プレート19の調節摘み21
は、移動プレート20の調節用長孔20bに嵌合されて
いる。調節摘み21はカーペット17から突出しないよ
うに設けられている。なお、調節摘み21はなくても調
整可能である。そして、調節摘み21を調節用長孔20
bに沿って移動させることによりにより、吹出孔19
a、20aの開口面積を調節し、吹出風量を調節するこ
とができるように構成されている。 【0014】上記風量調整装置16は、予め床部材5に
所定間隔で設けてもよいし、風量調整装置16を床部材
5、カーペット17とともにユニット化し、このユニッ
トを着脱可能とし、熱負荷が極端に遍在する箇所や、個
人的に気流を欲する箇所に必要に応じて配設するように
してもよい。また、吹出孔19a、20aの形状、配置
はこれに限定されるものではない。 【0015】上記構成からなる本発明の作用について説
明する。空調機15により空調された冷温風は、送風機
14から二重床6内に送られた後、床部材5の吹出孔5
aを通って点状に通過した空気は、通気性のカーペット
17内で平面状に広がって、室内へは床面全面からの均
一な吹き出しとなり、過大な気流感がなくなり、快適で
空間的偏りのない空調が実現できる。従って、送風機動
力を増大させることなく、風速も低下させることがで
き、騒音、振動の発生を防止するとともに、無駄にエネ
ルギーを消費することがなく、また、室内に均一に給気
することができる。 【0016】また、給気側および排気側にダクトを設置
する必要がなく、このため二重床の高さが低くても、即
ち低床でも給気することができるため、建築コストを低
減させることができるとともに、従来の床吹出し空調の
ように吹出し口を床面に埋め込む必要がないので、二重
床の高さは単純に空気の流通具合によってのみ規定され
る。従って、従来のOAフロアの高さを200〜300
mmも確保する必要がなくなり、通常の事務所であれば
100mm程度で充分といえる。 【0017】本発明における空調方式においては、室1
内における給気速度は、毎秒0.1mm〜100mm程
度(好ましくは毎秒5mm〜10mm)という超微風速
(人間の肌で感じない速度)で居室1内へ滲み出すよう
に給気して居室1内に温度成層を形成するようにしてい
る。また、実験によって床部材5の吹出孔5aを通過す
る際に室内負荷の影響を受けて昇温することが判明し
た。これは天井面や照明器具、人体等の輻射熱により二
重床6内の温度が上がるためであり、よって室内におけ
る居住者の足元の高さの空気温度を設定値に保つように
制御し、その結果、給気温度はその設定値よりも0.1
〜5.0℃低い温度(冷房の場合)となる。 【0018】また、人体やOA機器等の発熱体の上部で
はその発熱に起因する熱上昇流が生じており、給気され
た空気はこの流れに誘引されて発熱体に集まり、熱負荷
およびタバコの煙等の汚染物質を含む汚染空気Cは速や
かに上部空間に移動し、居住者Mの周辺は床全面から滲
み出した新鮮空気で常に包み込まれた状態となる。さら
に、室内に温度成層を形成するため、必要換気回数を低
減させることができ、その結果、空調機と排気用ファン
の動力の低減と小型化を図ることができ、また、空調機
の装置熱負荷を低減させることができる。また、火災発
生源の直上でこれを感知でき火災の早期感知ができる。
また、給気は超微風速で室内へ滲み出すため、床面に付
着した塵挨が舞い上がることがなく、また、カーペット
の通気性によりクリーニングが容易になるとともに、定
期的な通気によってダニやカビの繁殖を抑制することが
できる。また、給気が床全面から滲み出すため、OA機
器や家具のレイアウトを自由に設計することができ、O
A機器が遍在する場合であっても給気された空気が自律
的に発熱体に向けて流れ、平面的にムラのない空調環境
を実現することができる。 【0019】さらに、本発明においては、床部材5に風
量調整装置16を配設しているので、熱負荷が極端に遍
在する場合や、個人的に気流を欲する場合には、吹出孔
19a、20aから吹き出される風量を調節することに
より、最適な空調環境を実現することができる。 【0020】 【発明の効果】本発明においては、床部材に風量調整装
置を配設しているので、熱負荷が極端に遍在する場合
や、個人的に気流を欲する場合には、二重床を経て風量
調整装置の吹出孔から吹き出される風量を調節すること
により、最適な空調環境を実現することができる。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a full-floor blow-off system, that is, a method of gently and uniformly sending cold and hot air for air conditioning into a room from a double floor, and in the room. It belongs to the technical field of performing efficient and comfortable air conditioning by putting cold and hot air into the flow of natural air. [0002] In recent years, in air conditioning of office buildings,
Local temperature distribution near the outlet or uneven temperature distribution due to heat generation from ubiquitous OA equipment, etc., air flow disturbance due to the presence of partitions, furniture, etc., floors, especially floors with carpets It is an important task to solve the problems of pollutants such as dust, mite, mold, or cigarette smoke, body odor, and exhalation, which are rolled up from the surface, and to realize a clean and comfortable air-conditioning environment. However, the conventional general air-conditioning system, whether it is a ceiling blow-out system or a floor blow-out system, is a complete mixing type in which room air is actively stirred by a supply air force from a spot-type outlet. This is a method, and it is difficult to completely remove the pollutants because the pollutants accompanied by heat generated or flowed in the room are diluted and diffused by air supply. Although it is possible to remove pollutants to some extent by increasing the number of ventilations, it is possible to maintain the desired room temperature by increasing the amount of air blown out, or by reducing the supply air temperature considerably for cooling. However, in the case of heating, it has to be considerably high, which leads to an increase in the size of the equipment and an increase in energy consumption. In order to solve this problem, Japanese Patent Laid-Open Publication No.
In Japanese Patent No. 61749, air quality is improved by forming a perforated plate on the entire surface of the floor and the entire ceiling, and forming a piston flow that supplies air from a double floor to the room at a low wind speed and uniformly pushes the room toward the ceiling surface. I have a suggestion. [0005] The above-mentioned JP-A-4-161
In the air conditioning system disclosed in Japanese Patent No. 749, compared with a floor blowing system in which a large number of spot-type outlets are arranged, it is possible to prevent a sense of airflow from being felt, but when the heat load is extremely ubiquitous, There is a problem that it is difficult to cope with a case where an individual wants airflow. The present invention solves the above-mentioned problem. The present invention solves the above problem by slowly and uniformly sending cold and hot air for air conditioning from a double floor to a room, and injecting the cold and hot air into a natural air flow in a room. In an air-conditioning system that performs efficient and comfortable air-conditioning, it is possible to easily respond to cases where the heat load is extremely ubiquitous or if you want personal airflow,
It is an object of the present invention to provide an air volume adjusting device for floor air-conditioning equipment capable of realizing an optimal air-conditioning environment. [0007] For this purpose, an air volume adjusting device for floor air-conditioning equipment according to the present invention comprises a double floor formed at a lower part of a room and a floor member constituting the double floor. A large number of air outlets provided on the entire surface, and a ventilated carpet laid on the floor member, supplying cold and hot air for air conditioning into the double floor, and blowing the air from the air outlets into the room. In the floor air-conditioning equipment, a fixed plate is provided at a predetermined location through the floor member and has a plurality of elongated holes , and is provided movably on the fixed plate.
A moving plate comprising holes , wherein the moving plate is
It is characterized in that the amount of blown air is adjusted by moving . [0008] Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show an example of an air-conditioning system with a floor discharge system according to the present invention. FIG. 1 is a schematic sectional view, and FIG. In FIG. 1, a room 1 is formed between upper and lower slabs 3 and 4 of a building. A double floor 6 is formed in the lower part of the chamber 1, and a large number of blowout holes 5 a are provided on the entire surface of a floor member 5 constituting the double floor 6. The diameter of the blowout hole 5a is about 10 mm, and the total area of the blowout hole 5a is
It is necessary to secure 1.5% or more of the entire area. 1.
This is because if it is less than 5%, the air resistance sharply increases and an extreme pressure loss occurs. A ceiling member 7 having a plurality of exhaust ports 7a is disposed above the chamber 1, and an exhaust passage 8 is formed above the ceiling member 7. In the present example, a plurality of exhaust ports 7a are provided in the ceiling member 7, but an exhaust port may be provided in the upper part of the wall, or an exhaust port may be provided in both the ceiling member 7 and the wall. The air supply and exhaust to the room can be performed without providing ducts on the air supply and exhaust sides. An air conditioner 15 having a filter 12, a heat exchanger 13 and a blower 14 is installed in the machine room 11, the air supply side of the blower 14 is connected to the inside of the double floor 6, and the intake side is an exhaust passage. 8 is connected. Note that the heat exchanger 13
The control of the supply air temperature in the above is the control of the flow rate control valve in the case of the cold / hot water coil system, and the control of the refrigerant flow rate in the case of the refrigerant system. At a predetermined position of the floor member 5 of the double floor 6, an air volume adjusting device 16 which is a feature of the present invention is provided. Although the air volume adjusting device 16 is provided in the vicinity of the window 9 having a large thermal load and at a location having a small thermal load in the drawing, the present invention is not limited to this, and may be arranged at a plurality of locations as needed. FIG. 2 shows an example of the air volume adjusting device.
2A is a sectional view, and FIG. 2B is a perspective view. Floor member 5
Above, a permeable carpet 17 is laid, and the floor member 5
And an air volume adjusting device 16 is mounted. The air volume adjusting device 16 includes a support member 18 attached to the floor member 5, a fixed plate 19 fixed on the support member 18, and a movable plate 20 movably provided on the fixed plate 19. Become. Fixing plate 1
9 is provided with a plurality of elongated holes 19a, and an adjustment knob 21 is attached thereto.
Has a plurality of circular holes 20a and an adjusting slot 2
0b is formed, and the adjustment knob 21 of the fixing plate 19 is formed.
Are fitted in the adjustment slots 20b of the moving plate 20. The adjustment knob 21 is provided so as not to protrude from the carpet 17. In addition, the adjustment can be performed without the adjustment knob 21. Then, the adjusting knob 21 is moved to the adjusting slot 20.
b along with the air outlet 19
It is configured such that the opening areas of the a and 20a can be adjusted and the amount of blown air can be adjusted. The air volume adjusting device 16 may be provided on the floor member 5 at a predetermined interval in advance, or the air volume adjusting device 16 may be unitized with the floor member 5 and the carpet 17 so that the unit can be attached and detached, and the heat load is extremely low. May be disposed as necessary in a place ubiquitous in a place or a place where an individual wants airflow. Further, the shape and arrangement of the blowout holes 19a and 20a are not limited to these. The operation of the present invention having the above configuration will be described. The cool / hot air conditioned by the air conditioner 15 is sent from the blower 14 into the double floor 6,
The air passing in a dotted manner through a spreads flatly in the air-permeable carpet 17 and becomes a uniform blowing from the entire floor surface into the room, eliminating an excessive airflow sensation and providing a comfortable and spatially biased air. Air-conditioning without air can be realized. Therefore, it is possible to reduce the wind speed without increasing the power of the blower, to prevent the generation of noise and vibration, not to wastefully consume energy, and to uniformly supply air to the room. . In addition, there is no need to install ducts on the air supply side and the air discharge side, so that even if the height of the double floor is low, that is, air can be supplied even on a low floor, the construction cost is reduced. The height of the double floor is simply determined only by the degree of air flow, since it is not necessary to embed the air outlet in the floor as in the conventional floor air-conditioning. Therefore, the height of the conventional OA floor is set to 200 to 300.
It is no longer necessary to secure mm, and about 100 mm is sufficient for ordinary offices. In the air conditioning system of the present invention, the room 1
The air supply speed in the room 1 is such that air flows into the room 1 at an ultra-small wind speed (a speed not perceived by human skin) of about 0.1 mm to 100 mm per second (preferably 5 mm to 10 mm per second). A temperature stratification is formed therein. Further, it has been found by an experiment that the temperature rises under the influence of the indoor load when passing through the outlet 5a of the floor member 5. This is because the temperature in the double floor 6 rises due to the radiant heat of the ceiling surface, lighting equipment, the human body, etc., and therefore, the air temperature at the feet of the occupants in the room is controlled to be kept at the set value, and As a result, the supply air temperature is 0.1
The temperature becomes lower by 5.0C (in the case of cooling). Further, a heat rising flow due to the heat generation is generated above the heating element such as the human body and the OA equipment, and the supplied air is attracted by the flow and collects on the heating element, and the heat load and the cigarette are increased. The contaminated air C containing contaminants such as smoke quickly moves to the upper space, and the area around the occupant M is always surrounded by fresh air oozing from the entire floor. Furthermore, since the temperature stratification is formed in the room, the required ventilation frequency can be reduced, and as a result, the power of the air conditioner and the exhaust fan can be reduced and the size can be reduced. The load can be reduced. In addition, this can be detected immediately above the fire source, and early detection of a fire can be performed.
In addition, the air supply oozes into the room at the ultra-small wind speed, so that dust adhering to the floor surface does not soar up, and the ventilation of the carpet facilitates cleaning, and regular ventilation allows ticks and mold to flow. Breeding can be suppressed. In addition, since air supply leaks out from the entire floor, the layout of OA equipment and furniture can be freely designed.
Even when the device A is ubiquitous, the supplied air autonomously flows toward the heating element, and an air-conditioning environment free from unevenness in a plane can be realized. Further, according to the present invention, since the air volume adjusting device 16 is provided on the floor member 5, when the heat load is extremely ubiquitous or when an individual needs an airflow, the air outlet 19a is provided. , 20a, an optimal air-conditioning environment can be realized. According to the present invention, since the air volume adjusting device is provided on the floor member, when the heat load is extremely ubiquitous or when the user wants the airflow personally, the double air flow is required. An optimal air-conditioning environment can be realized by adjusting the amount of air blown out from the outlet of the air volume adjusting device through the floor.

【図面の簡単な説明】 【図1】本発明の全面床吹出し方式空調設備の1実施例
を示す模式的断面図である。 【図2】本発明における風量調整装置の1例を示し、図
2(A)は斜視図、図2(B)は断面図である。 【符号の説明】 1…室、5、…床部材、5a…吹出孔、6…二重床、1
6…風量調整装置、17…通気性カーペット、19…固
定プレート、20…移動プレート19a、19b…吹出
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view showing one embodiment of a full-floor air-conditioning system according to the present invention. 2A and 2B show an example of an air volume adjusting device according to the present invention, wherein FIG. 2A is a perspective view and FIG. 2B is a sectional view. [Explanation of Signs] 1… Room, 5… Floor member, 5a… Outlet, 6… Double floor, 1
6 air flow adjusting device, 17 air-permeable carpet, 19 fixed plate, 20 moving plates 19a, 19b blow-off holes

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) F24F 11/04 F24F 3/044 F24F 13/02 F24F 13/068 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) F24F 11/04 F24F 3/044 F24F 13/02 F24F 13/068

Claims (1)

(57)【特許請求の範囲】 【請求項1】室の下部に形成された二重床と、該二重床
を構成する床部材の全面に設けられた多数の吹出孔と、
前記床部材上に敷設された通気性のカーペットとを備
え、空調用の冷温風を前記二重床内に給気し、前記吹出
孔から室内に吹き出す床吹出し空調設備において、前記
床部材を貫通して所定箇所に配設され、複数の長孔からなる 吹出孔が形成された固定プレート
該固定プレート上に移動可能に設けられ、複数の円孔か
らなる移動プレートとを備え、前記移動プレートを移動
させることにより吹出風量を調整することを特徴とする
風量調整装置。
(57) [Claim 1] A double floor formed at a lower part of a chamber, and a large number of blow holes provided on the entire surface of a floor member constituting the double floor.
A floor-ventilated air-conditioning system, comprising: a permeable carpet laid on the floor member, supplying cold / hot air for air-conditioning into the double floor, and blowing the air from the outlet into the room. A fixed plate , which is disposed at a predetermined location and has a plurality of long holes ,
A plurality of circular holes are provided movably on the fixed plate.
A Ranaru moving plate, moves the moving plate
An air volume adjusting device that adjusts the amount of blown air by causing the air volume to be adjusted.
JP05909096A 1996-03-15 1996-03-15 Air volume adjustment device for floor air-conditioning equipment Expired - Fee Related JP3491246B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05909096A JP3491246B2 (en) 1996-03-15 1996-03-15 Air volume adjustment device for floor air-conditioning equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05909096A JP3491246B2 (en) 1996-03-15 1996-03-15 Air volume adjustment device for floor air-conditioning equipment

Publications (2)

Publication Number Publication Date
JPH09250801A JPH09250801A (en) 1997-09-22
JP3491246B2 true JP3491246B2 (en) 2004-01-26

Family

ID=13103303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP05909096A Expired - Fee Related JP3491246B2 (en) 1996-03-15 1996-03-15 Air volume adjustment device for floor air-conditioning equipment

Country Status (1)

Country Link
JP (1) JP3491246B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5714301B2 (en) * 2010-11-11 2015-05-07 高砂熱学工業株式会社 Cooling system and cooling method
JP5615783B2 (en) * 2011-09-19 2014-10-29 日立Geニュークリア・エナジー株式会社 Ventilation air conditioning equipment in the central control room of a nuclear power plant
JP6381022B2 (en) * 2014-06-09 2018-08-29 清水建設株式会社 Floor blowing type air conditioning system
JP6346580B2 (en) * 2015-03-19 2018-06-20 ビッグローブ株式会社 Air outlet for air conditioning and air conditioning system
KR102589651B1 (en) * 2021-12-13 2023-10-16 주식회사 지움 Mobile mattress drying device

Also Published As

Publication number Publication date
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