JPS61149743A - Air coditioner - Google Patents
Air coditionerInfo
- Publication number
- JPS61149743A JPS61149743A JP27154284A JP27154284A JPS61149743A JP S61149743 A JPS61149743 A JP S61149743A JP 27154284 A JP27154284 A JP 27154284A JP 27154284 A JP27154284 A JP 27154284A JP S61149743 A JPS61149743 A JP S61149743A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- heat
- sections
- water heat
- air conditioner
- 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
Landscapes
- Other Air-Conditioning Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はヒートポンプ式の冷凍サイクルを持つ空気調
和装置に関し、特に冷凍サイクルの構成要素の放熱ロス
及び結露を防ぎ、かつ周囲温度による冷凍サイクルの変
動をなくするものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an air conditioner having a heat pump type refrigeration cycle, and in particular, to prevent heat radiation loss and dew condensation from the components of the refrigeration cycle, and to prevent the refrigeration cycle from changing depending on the ambient temperature. This eliminates fluctuations.
従来、チリングユニット等に適用される空気調和装置は
、一般に冷凍装置を収容する機械室部分と、非利用側空
気熱交換器等を収容する熱交換室と、送風機及びこれら
を覆うケーシング部からなり、冷凍装置は、圧縮機、利
用側水熱交換器、余剰冷媒を貯える液溜容器、紋り装置
及びアキュムレータ等からなっている。Conventionally, an air conditioner applied to a chilling unit, etc. generally consists of a machine room section that houses a refrigeration device, a heat exchange room that houses a non-use side air heat exchanger, etc., a blower, and a casing section that covers these. The refrigeration system consists of a compressor, a water heat exchanger on the user side, a liquid storage container for storing surplus refrigerant, a swell device, an accumulator, and the like.
第5図はこの種従来の空気調和装置の冷凍サイクル図を
示すもので、1は圧縮機、2は四方弁、3は利用側水熱
交換器で、その外管3aには蓄熱槽または冷却塔からの
水が循環されるようになっているとともに、外管3a内
に挿着した内管(図示せず)には圧縮機1の運転により
冷媒が循環するようになっている。*た、4は非利用側
空気熱交換器、5はその送風機、6は低圧アキュムレー
タ、7は利用側水熱交換器3と非利用側空気熱交換器4
とを結ぶ冷媒通路に設けた絞り装置で、逆止弁8a〜8
dと、ドライヤ9と、冷房用キャピラリチューブ10と
、暖房用キャピラリチェープ11と、電磁弁12と、電
気式膨張弁13及び二重管14とから構成され、そして
、上記二重管14は電磁弁12に接続された内管14a
と、電気式膨張弁13に接続され内管14mの周囲に覆
うようにした外管14bとからなる。また、15は利用
側水熱交換器3と絞り装置7間を結ぶ冷媒通路に設けた
余剰冷媒用の液溜容器である。Fig. 5 shows a refrigeration cycle diagram of this type of conventional air conditioner, in which 1 is a compressor, 2 is a four-way valve, 3 is a user-side water heat exchanger, and the outer pipe 3a has a heat storage tank or cooling Water from the tower is circulated, and refrigerant is circulated through an inner pipe (not shown) inserted into the outer pipe 3a by operation of the compressor 1. * 4 is the air heat exchanger on the non-use side, 5 is its blower, 6 is the low-pressure accumulator, 7 is the water heat exchanger 3 on the use side and the air heat exchanger 4 on the non-use side
A throttling device installed in the refrigerant passage connecting the check valves 8a to 8.
d, a dryer 9, a capillary tube 10 for cooling, a capillary chain 11 for heating, a solenoid valve 12, an electric expansion valve 13, and a double pipe 14. Inner pipe 14a connected to solenoid valve 12
and an outer pipe 14b connected to the electric expansion valve 13 and surrounding the inner pipe 14m. Moreover, 15 is a liquid storage container for surplus refrigerant provided in the refrigerant passage connecting the utilization side water heat exchanger 3 and the expansion device 7.
上記二重管は、内管のキャピラリ内を流れる冷媒流量が
入口冷媒の圧力と過冷却度とに依存するということを利
用して、内管14aのキャピラリの周囲の流量を電気式
膨張弁13によって制御し、これにより内管のキャピラ
リの過冷却度を変化させて全体の冷媒流量を制御するの
である。The double pipe uses the fact that the flow rate of refrigerant flowing inside the capillary of the inner pipe depends on the pressure of the inlet refrigerant and the degree of supercooling to control the flow rate around the capillary of the inner pipe 14a using the electric expansion valve 13. This controls the overall refrigerant flow rate by changing the degree of supercooling of the capillary in the inner tube.
上記のような、従来の空気調和!IRにおける問題点は
、前記の絞りitの外管に流す電気式膨張弁13からの
流量は正確さを要するばかりでなく、内管のキャピラリ
の周囲を減圧、蒸発させて熱交換を行なうことにより、
過冷却度を調整するものであるため、外気温度の影響を
受けやすく、実際の制御においては内管のキャピラリと
外管と外気との両方で決定する必要があり、かつ不安定
となるという問題がある。また、多数のキャピラリ及び
電気部品を使用しているため、使用時の絞り装置からの
配管振れが大きく、その振動減衰のため対策が必要とな
る。Conventional air conditioning as above! The problem with IR is that the flow rate from the electric expansion valve 13 that flows into the outer tube of the aperture IT requires not only accuracy, but also the pressure around the capillary of the inner tube is reduced and evaporation is performed to perform heat exchange. ,
Because it adjusts the degree of supercooling, it is easily affected by the outside air temperature, and in actual control, it must be determined by both the inner tube capillary, the outer tube, and the outside air, and it is unstable. There is. Furthermore, since a large number of capillaries and electrical parts are used, there is a large amount of piping vibration from the throttling device during use, and countermeasures are required to dampen this vibration.
さらにチリングユニット等の空気調和装置は、屋外に設
置されるため、その冷凍装置部分は外気の影響を受けや
すく、放熱による熱交換能力の低下や各部品の放熱ロス
が大きいほか、外気の影響による冷凍サイクルの変動、
部品表面への結露により冷凍装置の信頼性が低下し、さ
らに結露水を収集、排水するために冷凍装置の台枠をド
シン皿構造にしなければならない等の問題があった。Furthermore, since air conditioners such as chilling units are installed outdoors, their refrigeration equipment is susceptible to the effects of outside air, resulting in a reduction in heat exchange capacity due to heat radiation and large heat loss in each component. Fluctuations in the refrigeration cycle,
Condensation on the surfaces of the parts lowers the reliability of the refrigeration system, and there are also problems such as the need for the frame of the refrigeration system to have a dish-like structure in order to collect and drain the condensed water.
この発明は、上記のような従来の問題を解決するために
なされたもので、利用側水熱交換器、絞り装置、am容
器等の冷凍サイクル構成要素からの放熱ロス及びその結
露を防止し、併せて周囲温度による冷凍サイクルの変動
をなくするようにした空気調和装置を提供することを目
的とする。This invention was made in order to solve the conventional problems as described above, and prevents heat radiation loss and condensation from refrigeration cycle components such as the user-side water heat exchanger, expansion device, and am container, Another object of the present invention is to provide an air conditioner that eliminates fluctuations in the refrigeration cycle due to ambient temperature.
この発明に係る空気調和装置は、利用側水熱交換器を筒
状に形成し、この筒状の中空部内に他の冷凍装置を構成
する液′M容器、アキエムレータ及び紋り装置等の部品
を収容し、中空部内の収容部品及び利用側水熱交換器全
体を断熱材によりモールドしたものである。In the air conditioner according to the present invention, the user-side water heat exchanger is formed into a cylindrical shape, and parts such as a liquid 'M container, an aqueous emulator, and a refrigeration device constituting other refrigeration equipment are placed inside the cylindrical hollow part. The housing parts in the hollow part and the entire user-side water heat exchanger are molded with a heat insulating material.
この発明においては、筒状に形成した利用側水熱交換器
及びその中空部内に収容しだ液溜容器。In the present invention, there is provided a user-side water heat exchanger formed in a cylindrical shape and a liquid storage container accommodated in the hollow portion thereof.
7キユムレータ、紋り装置の部品全体を発泡断熱材等に
より被覆モールドして断熱構造とすることにより、冷凍
装置が外気温度に影響されなくなり、所期の目的が達成
される。7. By molding the entire parts of the storage device and the refrigeration device with a foamed heat insulating material or the like to form a heat insulating structure, the refrigeration device is not affected by the outside temperature, and the intended purpose is achieved.
以下、この発明の一実施例を第1図乃至第4図について
説明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
第1図はこの発明に係る空気調和装置の冷凍サイクル図
を示すもので、第4図と同一の部分には同一符号を付し
てその説明を省略し、第4図と異なる部分を重点に述べ
る。FIG. 1 shows a refrigeration cycle diagram of an air conditioner according to the present invention. The same parts as in FIG. state
第1図からも明らかなように1点鎖線で囲んだ冷凍サイ
クルの各構成部品、即ち、利用側水熱交換器3.低圧ア
キュムレータ61絞り装置7及び液溜容器15全体を、
発泡ウレタン等の発泡断熱材16により被覆モールドし
て、外気と完全に遮断された断熱構造にしたものである
。As is clear from FIG. 1, each component of the refrigeration cycle surrounded by a dashed-dotted line includes the user-side water heat exchanger 3. The entire low pressure accumulator 61 throttle device 7 and liquid storage container 15,
It is covered and molded with a foamed heat insulating material 16 such as foamed urethane to create a heat insulating structure that is completely isolated from the outside air.
!112図乃至第4図は利用側水熱交換器3を含む底圧
アキエムレータ6、紋り装置7及び液溜容器15の断熱
構造を具体的に示した場合の空気調和装置の全体図を示
すもので、17は比較的厚鋼板によって皿状に成形され
た台枠であり、この台枠17上の四隅部分には4本の支
柱18が垂直に取り付けられ、さらにこの支柱18の前
面側及び後面側同志の上端をそれぞれ連結板19.20
により互いに連結することで機械室Aを構成しで11す
る。! 112 to 4 show the overall diagram of the air conditioner when the insulation structure of the bottom pressure achievator 6 including the water heat exchanger 3 on the user side, the swell device 7, and the liquid storage container 15 is specifically shown. Reference numeral 17 denotes an underframe formed into a dish shape from a relatively thick steel plate, and four columns 18 are vertically attached to the four corners of this underframe 17, and the front and rear sides of these columns 18 are attached vertically to the four corners of this underframe 17. Connecting plates 19 and 20 at the upper ends of the side comrades, respectively.
The machine room A is constructed by connecting them to each other.
この機械室A内の台枠17上には、上記圧縮8!1及び
上記利用側水熱交換器3が設置されてIllるとともに
、機械室A内の連結板19には、冷凍装置及び送風fi
5を制御する接触器、リレー、保護装置等を装着した電
気制御盤21が、連結板20には図示しないジスターン
タンクがそれぞれ取り付けられている。On the underframe 17 in the machine room A, the compressor 8!1 and the water heat exchanger 3 on the user side are installed. fi
An electric control panel 21 equipped with a contactor, a relay, a protection device, etc. for controlling the 5 is attached to the connecting plate 20, and a distern tank (not shown) is attached to the connecting plate 20, respectively.
22は上記支柱18上に取り付けたドレンパンで、この
ドレンパン22上には、フレートフィンと鋼管でL字状
に成形した非利用側空気熱交換器4が設置されている。Reference numeral 22 denotes a drain pan attached to the above-mentioned support column 18. On this drain pan 22, a non-use side air heat exchanger 4 formed into an L-shape using a plate fin and a steel pipe is installed.
22aはドレンパン2゛2に形成したドレン排出口であ
る。22a is a drain outlet formed in the drain pan 2-2.
23〜26は上記四隅の支柱18に取り付けられる外装
用支柱で、この外装用支柱23〜26によりSまれる前
後及び左右の側面は、第2図に示すような板材27〜2
9を外装用支柱23〜26に取り付けることによってカ
バーされ、装置のケーシングを構成するようになってい
る。*た、上記ケーシングで覆われた外装用支柱23〜
26の上端には、送風機5を装着したファンケーシング
5aが一体に取り付けられ、送風機5はL字状の非利用
側空気熱交換器4で囲まれた熱交換室Bの対向している
。Reference numerals 23 to 26 are exterior pillars attached to the four corner pillars 18, and the front, rear, left and right sides of the exterior pillars 23 to 26 are made of plate materials 27 to 2 as shown in FIG.
9 are attached to exterior supports 23 to 26 to form a casing of the device. *The exterior pillar 23 covered with the above casing
A fan casing 5a equipped with a blower 5 is integrally attached to the upper end of the fan 26, and the blower 5 faces a heat exchange chamber B surrounded by an L-shaped non-use side air heat exchanger 4.
また、上記利用側水熱交換器3は、蓄熱槽または冷却塔
の水回路に接続される外管3aと冷媒回路に接続される
内管(図示せず)をコイル状にした円筒形をなし、この
ように成形した利用側水熱交換器3の中空部3b内には
、第3図及び第4図に示すごとく低圧アキエムレータ6
と、絞り装M7を構成する逆止弁8&〜8d、ドライヤ
9.冷房用キャピラすチェープ10.Ill房用キャピ
ラリチェーブ11、電磁弁12.電気式膨張弁13およ
び二重管14と、液溜容器15が収容され、そしてこれ
ら全体はケース17内にセットされた後、その内部空間
に発泡ウレタン等の発泡断熱材16を充填し、利用側水
熱交換器3を含む収容部品全体を被覆し、かつモールド
して各収容部品を外気から完全に遮断した断熱構造にす
る。Further, the user-side water heat exchanger 3 has a cylindrical shape in which an outer pipe 3a connected to a water circuit of a heat storage tank or a cooling tower and an inner pipe (not shown) connected to a refrigerant circuit are coiled. In the hollow part 3b of the user-side water heat exchanger 3 formed in this way, there is a low pressure Akiemulator 6 as shown in FIGS. 3 and 4.
, check valves 8&~8d constituting the throttle device M7, and dryer 9. Capillary chain for cooling 10. Ill chamber capillary tube 11, solenoid valve 12. An electric expansion valve 13, a double pipe 14, and a liquid storage container 15 are housed, and after these are all set in a case 17, the internal space is filled with a foam insulation material 16 such as foamed urethane and used. The entire housing part including the side water heat exchanger 3 is coated and molded to form a heat insulating structure that completely isolates each housing part from the outside air.
次にsi図に従って、冷凍サイクル運転を説明すると、
冷房運伝の場合は、圧縮機1から吐出された高温、高圧
のガス冷媒は、四方弁2を通って非利用側空気熱交換器
4へ送られ、ここで送風機5によりガス冷媒が凝縮され
、高圧の液冷媒となる。この高圧液冷媒は逆止弁8aを
通ってドライヤ91電磁弁12.電気式膨張弁13.二
重管14でそれぞれ減圧される。*た冷房用キャピラリ
チ。Next, the refrigeration cycle operation will be explained according to the SI diagram.
In the case of cooling transmission, the high temperature, high pressure gas refrigerant discharged from the compressor 1 is sent through the four-way valve 2 to the non-use side air heat exchanger 4, where the gas refrigerant is condensed by the blower 5. , becomes a high-pressure liquid refrigerant. This high-pressure liquid refrigerant passes through the check valve 8a to the dryer 91 and the solenoid valve 12. Electric expansion valve 13. The pressure is reduced in each double pipe 14. *Capillary for cooling.
−プ10でも減圧をうける。減圧された低圧のγス、液
混合冷媒は利用側水熱交換器3で蒸発し、外部から導入
される外管3&内の水を冷却して熱交換を行なう。また
、蒸発したガス、液混合冷媒は低圧アキュムレータ6へ
送られ、液は底部へ。-Pull 10 is also depressurized. The reduced pressure low-pressure gamma gas/liquid mixed refrigerant evaporates in the user-side water heat exchanger 3, cools the water introduced from the outside in the outer tube 3&, and performs heat exchange. Also, the evaporated gas and liquid mixed refrigerant is sent to the low pressure accumulator 6, and the liquid goes to the bottom.
ガスは配管6aを通って四方弁2へ、そして圧縮機1へ
と戻る。The gas passes through the pipe 6a to the four-way valve 2 and then returns to the compressor 1.
一方、暖房運転の場合は逆の経路をたどる。即ち、圧縮
8!1より吐出された^温、高圧のガス冷媒は四方弁2
を通って利用側水熱交換器3へ送られ、そこで外管3a
を流れる温水によりamされて高圧の液冷媒となる。こ
の高圧の液冷媒は液溜容器15.逆止弁8bを通って紋
り装置7で減圧される。*た、暖房用キャピラリチュー
ブ11でも減圧される。On the other hand, in the case of heating operation, the route is reversed. That is, the high temperature, high pressure gas refrigerant discharged from the compression 8!1 is transferred to the four-way valve 2.
through the water heat exchanger 3 on the user side, where the outer pipe 3a
It becomes a high-pressure liquid refrigerant by being amped by the hot water flowing through it. This high pressure liquid refrigerant is stored in a liquid storage container 15. It passes through the check valve 8b and is depressurized by the curving device 7. *In addition, the pressure is also reduced in the heating capillary tube 11.
このような冷・暖房の冷凍サイクル運転が繰り返される
と、従来の冷凍装置では、外気との温度差から低圧アキ
エムレータ6はその表面に結露し、また液溜容器15か
ら放熱によるエネルギー損失が生じたり、結露したりす
るのであるが、この発明の実施例では、低圧アキュムレ
ータ6、液溜容器15が断熱材で被覆されているため、
上記の現象は回避できるほか、冷凍サイクルが外気温の
影響を受けることがない。また、低圧アキュムレータ6
.8!溜容器15及び絞9装置i7は、利用側水熱交換
器3の円筒中空部3b内に収容され、断熱材16で一体
にモールドされるため、装置のコンパクト化が可能とな
り、ドレン排水の問題もなくなる。When such a cooling/heating refrigeration cycle operation is repeated, in a conventional refrigeration system, dew condensation occurs on the surface of the low-pressure Akiemulator 6 due to the temperature difference with the outside air, and energy loss occurs due to heat radiation from the liquid storage container 15. However, in the embodiment of the present invention, since the low pressure accumulator 6 and the liquid storage container 15 are covered with a heat insulating material,
In addition to avoiding the above phenomenon, the refrigeration cycle is not affected by the outside temperature. Also, low pressure accumulator 6
.. 8! The storage container 15 and the diaphragm 9 device i7 are housed in the cylindrical hollow part 3b of the water heat exchanger 3 on the user side, and are integrally molded with the heat insulating material 16, so the device can be made more compact and there is no problem with drain drainage. It also disappears.
以上説明したように、この発明によれば、冷凍i置部品
の利用側水熱交換器を全体が筒状となるように形成し、
その中空部内に冷凍装置の他の部品である7キユムレー
タ、液溜容器、絞り装置等を収容し、これら収容部品及
び利用側水熱交換器全体を断熱材によりモールド被覆す
る構造としたので、外気とこれら部品とは完全に遮断さ
れ、放熱によるエネルギー損失がなく、結露もない周囲
温度に影響されない冷凍装置が得られるばかりでなく、
空間を利用して冷凍装置全体をコンパクトにまとめるこ
とができ、かつ動力系からの機械的振動が断熱材で吸収
されるので配管や装置の不要な振動や共振が防止され、
空気調和装置として性能の安定したものを得ることがで
きるという効果がある。As explained above, according to the present invention, the user-side water heat exchanger of the refrigeration equipment part is formed so as to have a cylindrical shape as a whole,
The other parts of the refrigeration system, such as the 7 storage unit, liquid storage container, expansion device, etc., are housed in the hollow part, and these housing parts and the entire water heat exchanger on the user side are molded and covered with a heat insulating material, so that the outside air can be These parts are completely isolated, and not only can you obtain a refrigeration system that is not affected by ambient temperature with no energy loss due to heat radiation and no condensation, but also
The entire refrigeration system can be made compact by utilizing space, and mechanical vibrations from the power system are absorbed by the insulation material, preventing unnecessary vibrations and resonances of piping and equipment.
This has the effect of providing an air conditioner with stable performance.
第1図乃至第4図はこの発明の一実施例を示し、#11
1!Iは空気調和Ijc置の冷凍サイクル図、第2図は
全体の構成を示す分解斜視図、fIS3図は利用側水熱
交換器部分の平面図、第4図はその側面図、l@5図は
従来の冷凍サイクルを示す模式図である。
1・・・圧縮機、2・・・四方弁、3・・・利用側水熱
交換器、3b−・・中空部、4・・・非利用側空気熱交
換器、5・・・送風機、6・・・7キユムレータ、7・
・・紋り装置、15・・・液溜容器、16・・・断熱材
。
なお、図中同一符号は同一または相当部分を示す。
代理人 大 岩 増 雄(ばか2名)
第1図
第3図
第4図
乙FIGS. 1 to 4 show an embodiment of the present invention, #11
1! I is a refrigeration cycle diagram of the air conditioner Ijc, Fig. 2 is an exploded perspective view showing the overall configuration, fIS3 is a plan view of the water heat exchanger on the user side, Fig. 4 is its side view, l@5 Fig. is a schematic diagram showing a conventional refrigeration cycle. DESCRIPTION OF SYMBOLS 1... Compressor, 2... Four-way valve, 3... Utilization side water heat exchanger, 3b-... Hollow part, 4... Non-utilization side air heat exchanger, 5... Air blower, 6...7 Kyumurata, 7.
...Fingerprint device, 15...Liquid storage container, 16...Insulating material. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent: Masuo Oiwa (2 idiots) Figure 1 Figure 3 Figure 4 Figure B
Claims (1)
と、アキュムレータ等により冷凍サイクルを構成する冷
凍装置及び非利用側空気熱交換器を備えた空気調和装置
において、上記利用側水熱交換器を筒状に形成し、その
中空部内に上記液溜容器、絞り装置、アキュムレータ等
を収容するとともに、該収容部品を含む上記利用側水熱
交換器全体を断熱材で被覆したことを特徴とする空気調
和装置。In an air conditioner equipped with a refrigeration system and a non-use side air heat exchanger, which constitute a refrigeration cycle including a compressor, a use-side water heat exchanger, a liquid storage container, a throttling device, an accumulator, etc., the above-mentioned use side The water heat exchanger is formed into a cylindrical shape, and the liquid storage container, expansion device, accumulator, etc. are housed in the hollow part, and the entire user side water heat exchanger including the housing parts is covered with a heat insulating material. An air conditioner featuring:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27154284A JPS61149743A (en) | 1984-12-21 | 1984-12-21 | Air coditioner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27154284A JPS61149743A (en) | 1984-12-21 | 1984-12-21 | Air coditioner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61149743A true JPS61149743A (en) | 1986-07-08 |
JPH0150822B2 JPH0150822B2 (en) | 1989-10-31 |
Family
ID=17501513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27154284A Granted JPS61149743A (en) | 1984-12-21 | 1984-12-21 | Air coditioner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61149743A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0534479U (en) * | 1991-09-24 | 1993-05-07 | 株式会社日阪製作所 | Plate heat exchanger |
JP2014048005A (en) * | 2012-09-03 | 2014-03-17 | Orion Mach Co Ltd | Cooling system |
JP2014206322A (en) * | 2013-04-12 | 2014-10-30 | 三菱電機株式会社 | Refrigeration cycle device |
-
1984
- 1984-12-21 JP JP27154284A patent/JPS61149743A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0534479U (en) * | 1991-09-24 | 1993-05-07 | 株式会社日阪製作所 | Plate heat exchanger |
JP2014048005A (en) * | 2012-09-03 | 2014-03-17 | Orion Mach Co Ltd | Cooling system |
JP2014206322A (en) * | 2013-04-12 | 2014-10-30 | 三菱電機株式会社 | Refrigeration cycle device |
Also Published As
Publication number | Publication date |
---|---|
JPH0150822B2 (en) | 1989-10-31 |
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