JPS63135732A - Method for supplying thermohygrostatic air - Google Patents
Method for supplying thermohygrostatic airInfo
- Publication number
- JPS63135732A JPS63135732A JP28261086A JP28261086A JPS63135732A JP S63135732 A JPS63135732 A JP S63135732A JP 28261086 A JP28261086 A JP 28261086A JP 28261086 A JP28261086 A JP 28261086A JP S63135732 A JPS63135732 A JP S63135732A
- Authority
- JP
- Japan
- Prior art keywords
- air
- temperature
- humidity
- preheater
- cooler
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003303 reheating Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 7
- 238000007710 freezing Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 6
- 238000010257 thawing Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/153—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Air Conditioning (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、氷温庫、氷温庫、または環
境試験装置などのように、目的空間を0℃以下の温度域
において、恒温恒湿条件に保つ場合に特に適している、
目的空間への恒温恒湿空気の供給方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of Application The present invention is used to maintain a target space under constant temperature and humidity conditions in a temperature range of 0°C or lower, such as an ice-warming warehouse, an ice-warming warehouse, or an environmental testing device. Particularly suitable for
This relates to a method of supplying constant temperature and constant humidity air to a target space.
従来技、術
一定の温度湿度条件に保つべき目的空間に、定温定湿空
気を供給する場合、先ず一旦目的とする温度より低い温
度まで冷凍サイクルによる空気冷却器によって冷却し、
ついでこれを電熱ヒータ等の空気再熱器によって加熱し
て温度上昇させて、目的の温度にすると共に、加湿器に
よって加湿して目的とする湿度に整えて目的空間に送り
出すのが一般的である。このよう6空気流路中に、送風
機、空気冷却器、空気再熱器、加湿器を備えて成る恒温
恒湿空気供給機は、目的空間たる恒温恒湿室と一連の空
気循環流路をなすように結合されている。したがって、
空気冷却器によっチ一旦氷点下に冷却することかどらl
−f L 7゜要な、比較的低温状態に目的空間を保つ
必要がある場合には、循環空気中の水分が冷却器に着霜
するので、そのまま連続運転を続けると、冷却フィンが
霜で詰まってしまい、冷却が不可能になるため、一定時
間毎若しくは着霜をセシサによって検出して霜取り運転
をせざるを得なかった。しかし、この霜取り運転は、空
気冷却器を加熱することによって行なわれるため、これ
によって目的空間の温度湿度条件が大幅に乱れてしまう
欠点があった。Conventional technology: When supplying constant temperature and constant humidity air to a target space that must be maintained at constant temperature and humidity conditions, it is first cooled down to a temperature lower than the target temperature using an air cooler using a refrigeration cycle.
This is then heated with an air reheater such as an electric heater to raise the temperature to the desired temperature, and is generally humidified with a humidifier to adjust the humidity to the desired level before being sent to the target space. . The constant temperature and constant humidity air supply machine, which is equipped with a blower, an air cooler, an air reheater, and a humidifier in six air flow paths, forms a series of air circulation flow paths with the constant temperature and humidity room that is the target space. are combined like this. therefore,
How about cooling it to below freezing using an air cooler?
-f L 7゜If it is necessary to maintain the target space at a relatively low temperature, moisture in the circulating air will form frost on the cooler, so if you continue to operate it continuously, the cooling fins will become frosty. Since the pipe becomes clogged and cooling becomes impossible, it is necessary to carry out defrosting operation at regular intervals or by detecting frost formation using a sensor. However, this defrosting operation is performed by heating the air cooler, which has the disadvantage that the temperature and humidity conditions of the target space are significantly disturbed.
特に加湿して一定の恒湿状態を実現する場合、目的空間
の制御温度が氷点下であると、加湿口にyli霜して加
湿量を変動させたり、或は、加湿器から放出された湿分
が、空気中で氷結してしまって、均一な加湿が不可能と
なり、安定した恒湿状態を作り出すことは至難であった
。In particular, when humidifying to achieve a constant humidity state, if the control temperature of the target space is below freezing, frost may form on the humidifying port, changing the amount of humidification, or the moisture released from the humidifier may However, it freezes in the air, making uniform humidification impossible, making it extremely difficult to create a stable constant humidity state.
発明の構成
本発明は、このような事情に対処してなされたものであ
って、その要りは、送風機を備えた空気流路中に、冷凍
機による空気冷却器と、この空気冷却器の風下側に設け
た空気加熱器とを有する恒温空気供給機と、この恒温空
気供給機と一連の空気循環流路をなすように連結する恒
温恒湿室とを備えた装置において、空気冷却器の風上側
に空気予熱器を設け、この空気予熱器と空気冷却器とを
通過した空気が、恒温恒湿室□の目標値である温湿度条
件を有する空気の露点温度まで冷却されるように、空気
予熱器を作動させ、この露点温度に達した空気を空気再
熱器を通して目標温度まで再加熱することにより、目標
の温度、湿度条件を備えた空気を作り出して、目的空間
に供給することにより、氷点下においても目的空間を極
めて高い精度で恒温恒湿状態に保つことができると共に
、空気冷却器への解霜操作を必要としないものにしたこ
とを特徴とする恒温恒湿空気の供給方法にある。以下、
本発明を実施するだめの装置の一例に基ずいて本願方法
を詳細に説明する。Structure of the Invention The present invention has been made in response to the above-mentioned circumstances, and its key points are an air cooler using a refrigerator and an air cooler downstream of this air cooler in an air flow path equipped with a blower. In an apparatus equipped with a constant-temperature air supply device having an air heater installed on the side, and a constant-temperature and constant-humidity room connected to the constant-temperature air supply device so as to form a series of air circulation channels, An air preheater is provided on the upper side, and the air is heated so that the air that has passed through the air preheater and the air cooler is cooled to the dew point temperature of the air that has the temperature and humidity conditions that are the target values of the constant temperature and humidity chamber □. By operating the preheater and reheating the air that has reached this dew point temperature to the target temperature through the air reheater, air with the target temperature and humidity conditions is created and supplied to the target space. A method for supplying constant-temperature, constant-humidity air, which is characterized by being able to maintain a target space in a constant temperature and humidity state with extremely high precision even at sub-zero temperatures, and eliminating the need for defrosting an air cooler. . below,
The present method will be explained in detail based on an example of an apparatus for carrying out the present invention.
第1図は、本願発明方法を実施するためのiIt置の一
例を概念的に示すものであって、断熱壁1aに囲まれた
箱体1中に仕切壁2を、対面するill壁間にわたって
設けることにより、目的の温度湿度条件に整えるべき恒
温恒湿室3と空気流路4とに分画し、仕切壁2の上縁2
aと、箱体1の天井1bとの間及び下縁2bと床面1c
との間には、若干の間隙が設けられて、夫々、空気供給
口4a、空気戻り口4bをなしている。空気流路4は、
その上部に設けた送風機5によって、空気戻り口4bか
ら入った空気が上昇して、空気供給口4aに至り、再び
恒温恒湿室3に供給されるように構成されている。この
ような空気流路4中に、電熱ヒータから成る空気予熱器
6、冷凍機7aの冷媒蒸発器を熱交換器とする空気冷却
器7、空気冷却器7によって冷却除湿された空気を電熱
ヒータによって目標温度まで再加熱する空気再熱器8が
空気の流れる方向に沿って、この順序に収納されること
により、恒温恒湿空気供給機が形成されている。10は
、サーミスタなどの温度検出器であって、空気供給口4
aから恒温恒湿室3内に供給された空気の温度を検出し
、この検出信号を再熱制御器11に入力する。再熱制御
器11は、予め設定されている目標値と入力値とを比較
し、その偏差に応じて、リレー回路などから成る駆動回
路12に出力し、空気再熱器8の作動を制御する。同様
に13は、高分子化合物の薄膜の湿分吸着による電気抵
抗の変化により、湿度を検出する湿度検出器などのよう
に、氷点下においても精度の維持できる湿度検出器であ
って、この検出信号が予熱制御r#14に入力され、そ
の検出値と設定値との偏差に応じて、駆動回路15を介
して、空気予熱器6の作動を制御するように構成されて
いる。FIG. 1 conceptually shows an example of an iIt arrangement for carrying out the method of the present invention, in which a partition wall 2 is placed between the facing ill walls in a box 1 surrounded by a heat insulating wall 1a. By providing the partition wall 2, the upper edge 2 of the partition wall 2 is divided into a constant temperature and humidity chamber 3 and an air flow path 4, which should be adjusted to the desired temperature and humidity conditions.
a and the ceiling 1b of the box body 1, and between the lower edge 2b and the floor surface 1c
A slight gap is provided between them, forming an air supply port 4a and an air return port 4b, respectively. The air flow path 4 is
Air entering from the air return port 4b rises by the blower 5 provided at the top thereof, reaches the air supply port 4a, and is configured to be supplied to the constant temperature and humidity chamber 3 again. In such an air flow path 4, an air preheater 6 consisting of an electric heater, an air cooler 7 using the refrigerant evaporator of the refrigerator 7a as a heat exchanger, and an electric heater that cools and dehumidifies the air by the air cooler 7. The air reheater 8 that reheats the air to the target temperature is housed in this order along the direction of air flow, thereby forming a constant temperature and humidity air supply device. 10 is a temperature detector such as a thermistor, and the air supply port 4
The temperature of the air supplied into the constant temperature and humidity chamber 3 is detected from a, and this detection signal is input to the reheat controller 11. The reheat controller 11 compares a preset target value and an input value, and outputs an output to a drive circuit 12 consisting of a relay circuit or the like according to the deviation, thereby controlling the operation of the air reheater 8. . Similarly, 13 is a humidity detector that can maintain accuracy even at sub-zero temperatures, such as a humidity detector that detects humidity by a change in electrical resistance due to moisture adsorption in a thin film of a polymer compound, and this detection signal is input to the preheating control r#14, and the operation of the air preheater 6 is controlled via the drive circuit 15 according to the deviation between the detected value and the set value.
このような構成を有する装置を用いて、恒温恒湿室3を
温度−10℃相対湿度30%の条件に保とうとする場合
において、空気冷却器7の冷却能力を一10℃前後の空
気を−3゜℃まで冷却することのできるように設定して
おいたとすると、−10℃で相対湿度30%の空気の露
点温度は一23℃である。したがって、空気戻り口4b
から入ってくる空気の温度が一10℃前後であるとする
と、空気予熱器6が全く作動しない場合は、空気冷却器
を通過した直後の空気は一30℃に低下し、これを空気
再熱器によって再加熱して一10℃まで温度上昇させた
としても、湿度は15%RH前後に低下してしまい、所
望の温度湿度条件が得られない。本願発明の特徴は、こ
のような場合において、湿度検出器13の信号に基ずい
て、予熱制御器14が、空気予熱器6を作動させ、空気
冷却器7に入る空気を予熱して、空気冷却器7を通過し
た空気が、ちょうど−10℃30%RHの空気の露点温
度である一23℃になるようにする。換言すれば、空気
冷却器7の冷却能力の過剰分(−30℃−(−23℃)
;−7℃)だけ、空気予熱器によって予熱して、目標温
度湿度条件の空気の露点温度にして、空気再熱器8に送
り込み、ここで目標湿度まで再熱することにより、極め
て高い精度で、−10℃30%RHの条件を有する空気
となって恒温恒湿室に供給されるようにするものである
。尚、上述のような条件での温湿度制御では、加湿器は
不要であるため、第1図の実施例では省略しているが、
この装置を、従来方法による高温高湿域の空気の供給に
併用する目的で適所に加湿器を設けておいてらよいこと
は言うまでもない。When trying to maintain the constant temperature and humidity chamber 3 at a temperature of -10°C and a relative humidity of 30% using a device having such a configuration, the cooling capacity of the air cooler 7 is reduced to -10°C. Assuming that the setting is such that it can be cooled down to 3°C, the dew point temperature of air at -10°C and relative humidity of 30% is -23°C. Therefore, air return port 4b
Assuming that the temperature of the air coming in from the Even if the temperature is raised to -10° C. by reheating with a container, the humidity will drop to around 15% RH, making it impossible to obtain the desired temperature and humidity conditions. The feature of the present invention is that in such a case, the preheating controller 14 operates the air preheater 6 based on the signal from the humidity detector 13, preheats the air entering the air cooler 7, and cools the air. The air passing through the cooler 7 is made to have a temperature of -23°C, which is the dew point temperature of air at -10°C and 30% RH. In other words, the excess cooling capacity of the air cooler 7 (-30°C - (-23°C)
; -7℃) using an air preheater to bring the dew point temperature of the air to the target temperature and humidity condition, and send it to the air reheater 8, where it is reheated to the target humidity, with extremely high precision. , -10°C and 30% RH, and is supplied to the constant temperature and humidity chamber. Note that in temperature and humidity control under the conditions described above, a humidifier is not required, so it is omitted in the embodiment shown in FIG.
It goes without saying that a humidifier may be provided at a suitable location for the purpose of using this device in conjunction with the conventional method for supplying air in a high temperature and high humidity region.
効果
従来の恒温恒湿空気供給方法は、空気冷却器によって一
旦冷却除湿したのちに目的温度まで上昇させると共に、
加湿を行い、目的の温度湿度の条件になるような方法に
よって行なわれていた為、空気冷却器によって入ってく
る空気を、氷点下に冷却する必要がある場合には、冷却
フィンなどへの着霜は不可避で、この霜取り運転の為に
、恒温恒湿室の温湿度が大幅に乱れてしまい、特に室温
が氷点下の場合おける湿度制御は殆ど行い得なかったが
、本願方法の場合は、そのような低温制御の場合でも運
転が定常状態に入って、恒温恒湿室内が、目標値付近の
条件に達すると、空気冷却器に入る空気は、該冷却器に
よってその能力限度一杯に冷却されたときに、ちょうど
、その露点温度に達するように空気予熱器が作動してい
るので、空気冷却器には着霜は殆どない。したがって露
点が氷点下になるような場合や、目的空間を氷点下の温
度に維持する場合における湿度制御が、極めて高い精度
で行うことができ、しがもこれを長時間安定して維持す
ることが可能である。加湿器も、氷点下においての湿度
制御の場合は、殆ど不要であり、又、それより以上の室
温における湿度制御においても従来のような大量の凝縮
水が発生しない為、加湿量の少ないもので行うことがで
きる効果がある。Effects Conventional constant-temperature, constant-humidity air supply methods use an air cooler to cool and dehumidify the air, then raise it to the target temperature.
Since this method was performed by humidifying the air to achieve the desired temperature and humidity conditions, if it was necessary to cool the incoming air to sub-zero temperatures using an air cooler, frost formation on the cooling fins, etc. This defrosting operation greatly disrupts the temperature and humidity in the constant temperature and humidity chamber, making it almost impossible to control humidity especially when the room temperature is below freezing. Even in the case of low-temperature control, when the operation enters a steady state and the constant temperature and humidity chamber reaches conditions near the target value, the air entering the air cooler will be cooled to its full capacity by the cooler. Since the air preheater operates just to reach that dew point temperature, there is almost no frost on the air cooler. Therefore, humidity control can be performed with extremely high precision when the dew point is below freezing, or when maintaining a target space at a temperature below freezing, and this can be maintained stably for a long time. It is. A humidifier is also almost unnecessary when controlling humidity at temperatures below freezing, and even when controlling humidity at room temperatures higher than that, a large amount of condensed water is not generated as in the case of conventional humidifiers, so a humidifier with a small amount of humidification is used. There is an effect that can be done.
tlS1図は、本発明方法の実施に用いる装置の一例を
示す説明図である。
手続補正書(方式)
昭和62年3月2日
昭和61年特許願#5282610号
2、発明の名称
恒温恒湿空気供給方法
3、補正をする者
事件との関係 特許出願人
住所長野県須坂市大字幸高246番地
名称 オリオン機械株式会社
代表取締役 太田三部
4、代理人
6、補正の対象
明#iI書の[発明の詳細な説明Jの欄補正の内容
明細書第1頁下から第2行に、
「30発明の名称]とあるのを、
[3、発明の詳細な説明」と訂正する。
以 上
手続有口正置(@発)
1.事件の表示
昭和61年特許M第282610号
2、発明の名称
恒温恒湿空気供給方法
3、補正をする者
事件との関係 特許出願人
住所長野県須坂市大字幸高246番地
名称 オリオン機械株式会社
代表取締役 太田三部
4、代理人
住所 艮野県艮野市篠ノ井布施高田929−26、補正
の対象
補正の内容
特許請求の範囲の記載を以下のように訂正する。
[送風機を備えた空気流路中に、冷凍機による空気冷却
器と、該空気冷却器の風下側旦設けた空気再熱器とを有
する恒温空気供給機と、該恒温空気供給機と一連の空気
循環流路をなすように連結する恒温恒湿室とを備えた装
置において、前記空気冷却器の風上側に空気予熱器を設
け、該空気予熱器と前記空気冷却器とを通過した空気が
、前記恒温恒湿室の目標値たる温度湿度条件を有する空
気の露点温度になるように空気予熱器を作動させて、空
気冷却器を通過した空気を空気再熱器により目標温度ま
で再加熱して恒温恒湿室へ供給することを特徴とする恒
温恒湿空気供給方法。」以 上Figure tlS1 is an explanatory diagram showing an example of an apparatus used to implement the method of the present invention. Procedural amendment (method) March 2, 1988 Patent application #5282610 No. 2, Title of invention Constant temperature and humidity air supply method 3, Person making the amendment Relationship to the case Patent applicant address Suzaka City, Nagano Prefecture Address: 246 Kotaka, Oaza Name: Orion Kikai Co., Ltd. Representative Director Ota Sanbe 4, Agent 6, Subject of the amendment [Detailed explanation of the invention J column of the amendment] Page 1, 2nd from the bottom In the line, ``30 Title of the invention'' should be corrected to ``3. Detailed description of the invention''. The above procedure has been completed (@departure) 1. Display of the case 1985 Patent M No. 282610 2 Name of the invention Constant temperature and humidity air supply method 3 Person making the amendment Relationship to the case Patent applicant address 246 Oaza Kotaka, Suzaka City, Nagano Prefecture Name Orion Machinery Co., Ltd. Representative Director Ota Sanbe 4, Agent Address: 929-26 Shinonoi Fuse Takada, Asuno City, Asuno Prefecture, Subject of Amendment Contents of the Amendment The description of the scope of the patent claims is amended as follows. [A constant temperature air supply machine that has an air cooler using a refrigerator and an air reheater installed on the leeward side of the air cooler in an air flow path equipped with a blower, and a series of In an apparatus equipped with a constant temperature and humidity chamber connected to form an air circulation flow path, an air preheater is provided on the windward side of the air cooler, and the air that has passed through the air preheater and the air cooler is , the air preheater is operated so that the dew point temperature of the air has the temperature and humidity conditions that are the target values of the constant temperature and humidity chamber, and the air that has passed through the air cooler is reheated to the target temperature by the air reheater. A constant temperature and humidity air supply method characterized by supplying air to a constant temperature and humidity room. "that's all
Claims (1)
再熱器とを有する恒温空気供給機と、該恒温空気供給機
と一連の空気循環流路をなすように連結する恒温恒湿室
とを備えた装置において、前記空気冷却器の風上側に空
気予熱器を設け、該空気予熱器と前記空気予熱器とを通
過した空気が、前記恒温恒湿室の目標値たる温度湿度条
件を有する空気の露点温度になるように空気予熱器を作
動させて、空気冷却器を通過した空気を空気再熱器によ
り目標温度まで再加熱して恒温恒湿室へ供給することを
特徴とする恒温恒湿空気供給方法。[Claims] A constant-temperature air supply machine having an air cooler using a refrigerator and an air reheater provided on the leeward side of the air cooler in an air flow path equipped with a blower; In an apparatus equipped with a constant temperature and humidity chamber connected to a supply machine so as to form a series of air circulation channels, an air preheater is provided on the windward side of the air cooler, and the air preheater and the air preheater are connected to each other. The air preheater is operated so that the air that has passed through the temperature and humidity chamber has the dew point temperature of the air that has the target temperature and humidity conditions, and the air that has passed through the air cooler is heated to the target temperature using the air reheater. A constant temperature and humidity air supply method characterized by reheating the air to a constant temperature and supplying it to a constant temperature and humidity chamber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28261086A JPH0235214B2 (en) | 1986-11-27 | 1986-11-27 | KOONKOSHITSUKUKIKYOKYUHOHO |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28261086A JPH0235214B2 (en) | 1986-11-27 | 1986-11-27 | KOONKOSHITSUKUKIKYOKYUHOHO |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63135732A true JPS63135732A (en) | 1988-06-08 |
JPH0235214B2 JPH0235214B2 (en) | 1990-08-09 |
Family
ID=17654751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28261086A Expired - Lifetime JPH0235214B2 (en) | 1986-11-27 | 1986-11-27 | KOONKOSHITSUKUKIKYOKYUHOHO |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0235214B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009198141A (en) * | 2008-02-25 | 2009-09-03 | Nippon Spindle Mfg Co Ltd | Heat exchange apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0477022U (en) * | 1990-11-16 | 1992-07-06 | ||
JPH0557430U (en) * | 1991-12-28 | 1993-07-30 | 加藤電機株式会社 | Tilt hinge for OA equipment |
-
1986
- 1986-11-27 JP JP28261086A patent/JPH0235214B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009198141A (en) * | 2008-02-25 | 2009-09-03 | Nippon Spindle Mfg Co Ltd | Heat exchange apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0235214B2 (en) | 1990-08-09 |
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