JPS64541Y2 - - Google Patents
Info
- Publication number
- JPS64541Y2 JPS64541Y2 JP18837382U JP18837382U JPS64541Y2 JP S64541 Y2 JPS64541 Y2 JP S64541Y2 JP 18837382 U JP18837382 U JP 18837382U JP 18837382 U JP18837382 U JP 18837382U JP S64541 Y2 JPS64541 Y2 JP S64541Y2
- Authority
- JP
- Japan
- Prior art keywords
- indoor
- valves
- heat exchanger
- valve
- pressure side
- 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
Links
- 238000001816 cooling Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 10
- 238000004378 air conditioning Methods 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 3
- 230000003446 memory effect Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 108091027981 Response element Proteins 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
【考案の詳細な説明】
〔従来技術とその問題点〕
本考案は１台の室外ユニツトに複数台の室内ユ
ニツトを結合する多室型冷暖房装置の改良に関す
るものである。本考案の改良の対象となる従来の
この種の装置を第１図について説明する。１は室
外ユニツト、２ａ，２ｂは室内ユニツト、３は分
配ユニツトである。室外ユニツト１は、圧縮機
４、四方弁５、室外熱交換器６、並列に接続され
た逆止弁７と減圧弁８およびアキユムレータ９と
よりなる。複数台の室内ユニツト２ａ，２ｂはそ
れぞれ室内熱交換器１０ａ，１０ｂとキヤピラリ
チユーブ１１ａ，１１ｂとを有する。分配ユニツ
ト３は室内ユニツト２ａ，２ｂの冷房時の高圧側
にそれぞれ接続される第１開閉弁１２ａ，１２ｂ
と同じく低圧側に接続される第２開閉弁１３ａ，
１３ｂと、前記高圧側とアキユムレータ９との間
に接続される第３開閉弁１４ａ，１４ｂとを有す
る。１５は冷媒配管である。[Detailed Description of the Invention] [Prior Art and its Problems] The present invention relates to an improvement of a multi-room air conditioning system that connects a plurality of indoor units to one outdoor unit. A conventional device of this kind, which is the object of the improvement of the present invention, will be explained with reference to FIG. 1 is an outdoor unit, 2a and 2b are indoor units, and 3 is a distribution unit. The outdoor unit 1 includes a compressor 4, a four-way valve 5, an outdoor heat exchanger 6, a check valve 7, a pressure reducing valve 8, and an accumulator 9 connected in parallel. The plurality of indoor units 2a, 2b each have an indoor heat exchanger 10a, 10b and a capillary tube 11a, 11b. The distribution unit 3 has first on-off valves 12a and 12b connected to the high pressure sides of the indoor units 2a and 2b during cooling, respectively.
A second on-off valve 13a, which is also connected to the low pressure side,
13b, and third on-off valves 14a, 14b connected between the high pressure side and the accumulator 9. 15 is a refrigerant pipe.
冷房時において、圧縮機４で圧縮された冷媒は
四方弁５（実線）を通つて室外熱交換器６に入
り、凝縮液化して逆止弁７および第１開閉弁１２
ａ，１２ｂを通り、キヤピラチユーブ１１ａ，１
１ｂで減圧されて室内熱交換器１０ａ，１０ｂで
蒸発気化し、第２開閉弁１３ａ，１３ｂおよび四
方弁５を通過してアキユムレータ９に入り、圧縮
機４にもどる。室内ユニツト２ａ，２ｂの双方が
駆動されているときは第１開閉弁１２ａ，１２ｂ
および第２開閉弁１３ａ，１３ｂはいずれも開い
ており、第３開閉弁１４ａ，１４ｂは閉じてい
る。室内ユニツト２ａ，２ｂのうち、２ａが運
転、２ｂが休止しているときは１２ａ，１３ａは
開き、１２ｂ，１３ｂおよび１４ａ，１４ｂは閉
じている。 During cooling, the refrigerant compressed by the compressor 4 enters the outdoor heat exchanger 6 through the four-way valve 5 (solid line), condenses and liquefies, and passes through the check valve 7 and the first on-off valve 12.
a, 12b, and the capillary tubes 11a, 1
It is depressurized at 1b, evaporated and vaporized at indoor heat exchangers 10a and 10b, passes through second on-off valves 13a and 13b and four-way valve 5, enters accumulator 9, and returns to compressor 4. When both indoor units 2a and 2b are driven, the first on-off valves 12a and 12b
The second on-off valves 13a, 13b are both open, and the third on-off valves 14a, 14b are closed. Of the indoor units 2a, 2b, when 2a is in operation and 2b is in rest, 12a, 13a are open, and 12b, 13b and 14a, 14b are closed.
次に暖房時において、圧縮機４で圧縮された冷
媒は四方弁５（点線）および第２開閉弁１３ａ，
１３ｂを通過して室内熱交換器１０ａ，１０ｂに
入り、凝縮放熱してキヤピラリチユーブ１１ａ，
１１ｂで減圧され、第１開閉弁１２ａ，１２ｂお
よび減圧弁８を通過して室外熱交換器６に入り、
蒸発気化して四方弁５およびアキユムレータ９を
通つて圧縮機４にもどる。室内ユニツト２ａ，２
ｂの双方が駆動されているときは、第１開閉弁１
２ａ，１２ｂおよび第２開閉弁１３ａ，１３ｂ開
き、第３開閉弁１４ａ，１４ｂは閉じている。室
内ユニツト２ａ，２ｂのうち、２ａが運転、２ｂ
が休止しているときは１２ａ，１３ａ，１４ｂは
開き、１２ｂ，１３ｂ，１４ａは閉じている。休
止中の室内ユニツト２ｂの第３開閉弁１４ｂが開
いているのは休止中の室内ユニツト２ｂに冷媒の
溜り込むのを防止するためである。 Next, during heating, the refrigerant compressed by the compressor 4 is transferred to the four-way valve 5 (dotted line) and the second on-off valve 13a,
13b, enters the indoor heat exchangers 10a and 10b, condenses and radiates heat to capillary tubes 11a and 13b.
11b, passes through the first on-off valves 12a, 12b and the pressure reducing valve 8, enters the outdoor heat exchanger 6,
It is evaporated and returned to the compressor 4 through the four-way valve 5 and the accumulator 9. Indoor unit 2a, 2
When both of b are driven, the first on-off valve 1
2a, 12b and second on-off valves 13a, 13b are open, and third on-off valves 14a, 14b are closed. Of the indoor units 2a and 2b, 2a is in operation and 2b is in operation.
When is at rest, 12a, 13a, and 14b are open, and 12b, 13b, and 14a are closed. The reason why the third on-off valve 14b of the indoor unit 2b that is inactive is open is to prevent refrigerant from accumulating in the indoor unit 2b that is inactive.
ところで上記従来の装置には以下述べるような
問題点がある。この種の装置においては室外ユニ
ツトの容量を複数台の室内ユニツトの容量の総計
に合せて設計してあるので、冷暖房負荷に変動が
あると冷凍サイクルのバランスがくづれる。すな
わち、冷房時において、複数台の室内ユニツトの
うち、その一部が休止すると、運転中の室内ユニ
ツトに全冷媒が集中して絞り過ぎになり、室内熱
交換器の蒸発圧力が低下して霜付現象がおこり、
さらに圧縮機の吸入する低圧冷媒の温度が上昇し
て吐出温度が異常に上昇する。同様に暖房時にお
いても、複数台の室内ユニツトのうちの一部が休
止すると室内熱交換器の容量が相対的に、減少
し、高圧側の圧力が異常に上昇する。 However, the conventional device described above has the following problems. In this type of equipment, the capacity of the outdoor unit is designed to match the total capacity of the plurality of indoor units, so any fluctuation in the air conditioning load will upset the balance of the refrigeration cycle. In other words, during cooling, if some of the indoor units are stopped, all the refrigerant will be concentrated in the operating indoor unit and it will be throttled too much, reducing the evaporation pressure of the indoor heat exchanger and causing frost. A phenomenon occurs,
Further, the temperature of the low-pressure refrigerant sucked into the compressor increases, and the discharge temperature increases abnormally. Similarly, during heating, if some of the indoor units are stopped, the capacity of the indoor heat exchanger will be relatively reduced, and the pressure on the high pressure side will rise abnormally.
本考案は上記従来の装置のもつ問題点を解消
し、冷房負荷ないしは暖房負荷の変動に対して合
理的に対応することのできる機構を備えた多室型
冷暖房装置を提供することを目的とする。
The purpose of the present invention is to solve the problems of the above-mentioned conventional devices and to provide a multi-room air-conditioning device equipped with a mechanism that can rationally respond to fluctuations in cooling load or heating load. .
本考案は圧縮機、四方弁、室外熱交換器および
並列に接続された逆止弁と減圧弁とよりなる室外
ユニツトを、キヤピラリチユーブと室内熱交換器
とよりなる複数台の室内ユニツトと、複数個の開
閉弁および絞り器によつて接続し、前記室内ユニ
ツトの冷房時高圧側に設けた複数個の第１開閉弁
は前記室外ユニツトの低圧側に連通する第１絞り
器をそれぞれ並列に有し、前記室内ユニツトの冷
房時低圧側に設けた複数個の第２開閉弁はこれと
並列に第２絞り器をそれぞれ有する冷凍サイクル
において、前記第１および第２の絞り器は形状記
憶効果合金によつて形成されたベローズ型感熱応
動素子よりなり、その伸縮を制御する加熱手段お
よび制御器を備えていることを特徴とする多室型
冷暖房装置である。
The present invention combines an outdoor unit consisting of a compressor, a four-way valve, an outdoor heat exchanger, a check valve and a pressure reducing valve connected in parallel, and a plurality of indoor units consisting of a capillary tube and an indoor heat exchanger. A plurality of first on-off valves are connected by a plurality of on-off valves and a restrictor, and each of the plurality of first on-off valves provided on the high-pressure side of the indoor unit for cooling connects a first restrictor connected to the low-pressure side of the outdoor unit in parallel. In the refrigeration cycle, each of the plurality of second on-off valves provided on the low-pressure side during cooling of the indoor unit has a second restrictor in parallel therewith, and the first and second restrictors have a shape memory effect. This multi-room air-conditioning/heating device is made of a bellows-type thermosensitive element made of an alloy, and is characterized by being equipped with a heating means and a controller for controlling expansion and contraction of the bellows-type heat-responsive element.
本考案の実施例を第２図について説明する。同
図において１から１３ａ，１３ｂまでは第１図と
異なるところがないのでその説明を省略する。本
考案においては第１図の第３開閉弁１４ａ，１４
ｂを形状記憶効果合金（SME合金）よりなる第
１絞り器１６ａ，１６ｂとした点および第２開閉
弁１３ａ，１３ｂと並列に、第１絞り器と同様な
第２絞り器１７ａ，１７ｂを接続した点において
第１図の従来の装置と構成および作用を異にして
いる。 An embodiment of the invention will be described with reference to FIG. 1 to 13a and 13b are the same as those in FIG. 1, so their explanation will be omitted. In the present invention, the third on-off valves 14a, 14 in FIG.
b is a first restrictor 16a, 16b made of a shape memory effect alloy (SME alloy), and a second restrictor 17a, 17b similar to the first restrictor is connected in parallel with the second on-off valve 13a, 13b. In this respect, the structure and operation are different from the conventional device shown in FIG.
SME合金はニツケル、チタン合金、あるいは
銅、亜鉛、アルミニユーム合金等よりなり、加熱
又は冷却によつて記憶した形状を復元する性質を
有する。いま、第３図イに示すSME合金よりな
る長さｌのコイルＬが長さl1を記憶しているとす
る（ｌ＝l1）。これをある温度Ａで長さl3に引き伸
して（ｌ＝l3）加熱すると、ある温度Ｂを越えた
とき最初に記憶した長さl1に復帰Ｃする。加熱を
停止して温度がある温度Ｄに降下すると伸び始
め、ｌ＝l2になつたときＥに再び加熱すると温度
Ｆ（Ｂと同じ温度）に達したとき再び長さl1に復
帰Ｃする。 SME alloys are made of nickel, titanium alloys, copper, zinc, aluminum alloys, etc., and have the property of restoring a memorized shape by heating or cooling. Assume now that the coil L of length l made of SME alloy shown in FIG. 3A stores a length l 1 (l=l 1 ). When this is stretched to a length l 3 at a certain temperature A and heated (l=l 3 ), when a certain temperature B is exceeded, it returns to the initially memorized length C. When heating is stopped and the temperature drops to a certain temperature D, it begins to elongate, and when l = l 2 , it is heated again to E, and when it reaches temperature F (same temperature as B), it returns to the length l 1 again C. .
本考案の第１および第２の絞り器は上記SME
合金により、第４図に示すように、両側に毛細管
１８，１９を有するベローズ型感熱応動素子２０
を形成し、これを両側に細管２１，２２を有する
ケース２３に収容し、感熱応動素子２０の一方の
毛細管１８をケース２３の一方の細管２１に固定
し、他方の毛細管１９を他方の細管２２に摺動自
在に挿入し、ケース２３の内部に制御器２４によ
つて制御されるヒータ２５を設けた構造を有す
る。２６はヒータ２５の電源である。 The first and second squeezers of the present invention are the above-mentioned SME
Due to the alloy, a bellows-type thermosensitive element 20 having capillary tubes 18 and 19 on both sides as shown in FIG.
This is housed in a case 23 having capillary tubes 21 and 22 on both sides, one capillary tube 18 of the thermosensitive element 20 is fixed to one capillary tube 21 of the case 23, and the other capillary tube 19 is fixed to the other capillary tube 22. It has a structure in which a heater 25 is slidably inserted into the case 23 and is controlled by a controller 24 inside the case 23. 26 is a power source for the heater 25.
本考案の絞り器は感熱応動素子２０にある温度
の下で第３図の長さl1を記憶させ、これを長さl3
に塑性加工してヒータ２５によつて加熱すると、
第３図に示すように伸縮する。第４図イは感熱応
動素子２０の長さがl1、ロはl3のときを示してい
る。同図から明らかなように、イにおける冷媒の
毛細通路l4はロの毛細通路l5よりも長く、イはロ
よりも冷媒の通過抵抗が大きいことがわかる。こ
の感熱応動素子２０の伸縮の制御はヒータ２５の
温度を制御器２４によつて制御することによつて
行なわれる。制御器２４は例えば室内熱交換器１
０ａ，１０ｂに設けた温度センサの信号によつて
動作するようにすればよい。 The wringer of the present invention stores the length l 1 in FIG. 3 under a certain temperature in the thermosensitive element 20, and stores this length l 3
When plastically processed and heated by the heater 25,
It expands and contracts as shown in Figure 3. FIG. 4A shows a case where the length of the thermosensitive element 20 is l 1 and b shows a case where the length is l 3 . As is clear from the figure, the refrigerant capillary passage l4 in A is longer than the capillary passage l5 in B, and it can be seen that the passage resistance of the refrigerant in A is greater than in B. The expansion and contraction of the thermosensitive element 20 is controlled by controlling the temperature of the heater 25 by the controller 24. The controller 24 is, for example, the indoor heat exchanger 1
It may be operated by signals from temperature sensors provided at 0a and 10b.
本考案の冷暖房装置は複数個の冷暖房負荷２
ａ，２ｂの双方が運転されるときは第１開閉弁１
２ａ，１２ｂおよび第２開閉弁１３ａ，１３ｂい
づれも開いて正常な冷房および暖房が行なわれ
る。冷房時において、２ａ，２ｂのうち、２ａが
運転され、２ｂが休止するときは１２ａ，１２
ｂ，１３ａが開き１３ｂは閉じており、運転中の
２ａには冷媒が正常に流れ、過剰の冷媒は休止中
の２ｂを通つて１３ｂと並列に設けた第２絞り器
１７ｂを通過することになる。したがつて第２絞
り器１７ｂの通過量、すなわち流通抵抗を制御器
２４によつて適当に制御すれば冷凍サイクル全体
のバランスをくづすことなく冷房を行なうことが
できる。また、暖房時において２ａ，２ｂのうち
２ａが運転され、２ｂが休止するときは１２ａ，
１３ａが開き、１２ｂ，１３ｂは閉じており、運
転中の２ａには冷媒が正常に流れ、過剰の冷媒は
第２絞り器１７ｂを通つて休止中の２ｂに入りそ
の適量が２ｂに貯溜される。２ｂは第１絞り器１
６ｂによつて室外ユニツトの低圧側に連通してい
るので貯溜量が過大になることはない。したがつ
て第１および第２絞り器１６ｂ，１７ｂの通過量
すなわち流通抵抗を制御器２４により適当に制御
することによつて冷凍サイクル全体のバランスを
くづすことなく暖房を行なうことができる。
The air conditioning system of the present invention handles multiple air conditioning loads 2.
When both a and 2b are operated, the first on-off valve 1
2a, 12b and second on-off valves 13a, 13b are both opened to perform normal cooling and heating. During cooling, when 2a is operated among 2a and 2b and 2b is stopped, 12a and 12
b, 13a are open and 13b is closed, and the refrigerant normally flows through the operating 2a, and the excess refrigerant passes through the inactive 2b and the second restrictor 17b installed in parallel with 13b. Become. Therefore, if the amount of passage through the second restrictor 17b, that is, the flow resistance, is appropriately controlled by the controller 24, cooling can be performed without disturbing the balance of the entire refrigeration cycle. Also, during heating, 2a of 2a and 2b is operated, and when 2b is stopped, 12a,
13a is open, 12b and 13b are closed, and the refrigerant normally flows into the operating 2a, and excess refrigerant passes through the second restrictor 17b and enters the idle 2b, and an appropriate amount of it is stored in 2b. . 2b is the first squeezer 1
Since it is connected to the low pressure side of the outdoor unit through 6b, the storage amount will not become excessive. Therefore, by appropriately controlling the amount of passage through the first and second restrictors 16b and 17b, that is, the flow resistance, by the controller 24, heating can be performed without disturbing the balance of the entire refrigeration cycle.
以上述べたように本考案の装置は第１および第
２の絞り器を制御することによつて冷暖房負荷の
変動に対して系全体のバランスをくづすことなく
合理的に対応することができるので、前述の従来
の装置のもつ問題点を解消し、考案の目的を達成
する効果を有する。また、SME合金はその熱変
形の制御が容易で、本考案の絞り器の動作を確実
にするすぐれた特性を有する。 As described above, by controlling the first and second restrictors, the device of the present invention can rationally respond to fluctuations in the heating and cooling load without disrupting the balance of the entire system. Therefore, it has the effect of solving the problems of the above-mentioned conventional device and achieving the object of the invention. In addition, the SME alloy has excellent properties such that its thermal deformation is easily controlled and ensures reliable operation of the wringer of the present invention.
第１図は従来の冷暖房装置の構成を示す図、第
２図は本考案の冷暖房装置の構成を示す図、第３
図はSME合金の説明図で、イはSME合金よりな
るコイル、ロはその特性図である。第４図は本考
案の絞り器を示す図で、イは感熱応動素子が収縮
したとき、ロは伸びたときの状態を示す。
１……室外ユニツト、２……室内ユニツト、３
……分配ユニツト、４……圧縮機、５……四方
弁、６……室外熱交換器、７……逆止弁、８……
減圧弁、９……アキユムレータ、１０……室内熱
交換器、１１……キヤピラリチユーブ、１２……
第１開閉弁、１３……第２開閉弁、１４……第３
開閉弁、１５……冷媒配管、１６……第１絞り
器、１７……第２絞り器、１８，１９……毛細
管、２０……感熱応動素子、２１，２２……細
管、２３……ケース、２４……制御器、２５……
ヒータ、２６……電源。
Figure 1 is a diagram showing the configuration of a conventional heating and cooling system, Figure 2 is a diagram showing the configuration of the heating and cooling system of the present invention, and Figure 3 is a diagram showing the configuration of a heating and cooling system of the present invention.
The figure is an explanatory diagram of the SME alloy, A is a coil made of the SME alloy, and B is its characteristic diagram. FIG. 4 is a diagram showing the wringer of the present invention, where A shows the state when the thermosensitive element is contracted, and B shows the state when it is expanded. 1...Outdoor unit, 2...Indoor unit, 3
... Distribution unit, 4 ... Compressor, 5 ... Four-way valve, 6 ... Outdoor heat exchanger, 7 ... Check valve, 8 ...
Pressure reducing valve, 9...Accumulator, 10...Indoor heat exchanger, 11...Capillary tube, 12...
1st on-off valve, 13...2nd on-off valve, 14...3rd on-off valve
Opening/closing valve, 15... Refrigerant piping, 16... First restrictor, 17... Second restrictor, 18, 19... Capillary tube, 20... Heat sensitive response element, 21, 22... Capillary tube, 23... Case , 24... controller, 25...
Heater, 26...Power supply.
Claims (1)
続された逆止弁と減圧弁とよりなる室外ユニツト
を、キヤピラリチユーブと室内熱交換器とよりな
る複数台の室内ユニツトと、複数個の開閉弁およ
び絞り器によつて接続し、前記室内ユニツトの冷
房時高圧側に設けた複数個の第１開閉弁は前記室
外ユニツトの低圧側に連通する第１絞り器をそれ
ぞれ並列に有し、前記室内ユニツトの冷房時低圧
側に設けた複数個の第２開閉弁はこれと並列に第
２絞り器をそれぞれ有する冷凍サイクルにおい
て、前記第１および第２の絞り器は形状記憶効果
合金によつて形成されたベローズ型感熱応動素子
よりなり、その伸縮を制御する加熱手段および制
御器を備えていることを特徴とする多室型冷暖房
装置。 An outdoor unit consisting of a compressor, a four-way valve, an outdoor heat exchanger, and a check valve and a pressure reducing valve connected in parallel is combined with a plurality of indoor units consisting of a capillary tube and an indoor heat exchanger, and a plurality of indoor units consisting of a capillary tube and an indoor heat exchanger. A plurality of first on-off valves connected by on-off valves and a diaphragm, each of which is provided on a high-pressure side during cooling of the indoor unit, each have a first diaphragm in parallel that communicates with a low-pressure side of the outdoor unit; In the refrigeration cycle, each of the plurality of second on-off valves provided on the low pressure side during cooling of the indoor unit has a second restrictor in parallel therewith, and the first and second restrictors are made of a shape memory effect alloy. What is claimed is: 1. A multi-room air-conditioning and heating system comprising a bellows-type heat-sensitive element formed as a bellows-type thermosensitive element, and comprising a heating means and a controller for controlling the expansion and contraction of the bellows-type heat-sensitive element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18837382U JPS5991573U (en) | 1982-12-13 | 1982-12-13 | Multi-room air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18837382U JPS5991573U (en) | 1982-12-13 | 1982-12-13 | Multi-room air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5991573U JPS5991573U (en) | 1984-06-21 |
| JPS64541Y2 true JPS64541Y2 (en) | 1989-01-09 |
Family
ID=30406394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18837382U Granted JPS5991573U (en) | 1982-12-13 | 1982-12-13 | Multi-room air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5991573U (en) |
-
1982
- 1982-12-13 JP JP18837382U patent/JPS5991573U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5991573U (en) | 1984-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3699514B1 (en) | Systems and methods for controlling a refrigeration system | |
| US5689962A (en) | Heat pump systems and methods incorporating subcoolers for conditioning air | |
| US5622057A (en) | High latent refrigerant control circuit for air conditioning system | |
| EP2233863B1 (en) | Free cooling refrigeration system | |
| US4124177A (en) | Heating system | |
| JPS645227B2 (en) | ||
| JPS63118546A (en) | Air conditioning system for building | |
| CN210832604U (en) | Air conditioner | |
| EP0760453A2 (en) | Air conditioning system with subcooler coil and series expander devices | |
| JPS64541Y2 (en) | ||
| JP2971222B2 (en) | Air conditioner | |
| JPH01118080A (en) | Heat pump type air conditioner | |
| JPH0212540Y2 (en) | ||
| WO1997041398A1 (en) | Defrost operation for heat pump and refrigeration systems | |
| JP4727523B2 (en) | Refrigeration equipment | |
| US11629864B2 (en) | Multi-type air conditioner | |
| JPS63251760A (en) | Refrigerator | |
| JP2657077B2 (en) | Air conditioner | |
| JPS6230695Y2 (en) | ||
| JPH0665940B2 (en) | Refrigerant control method for heat pump type air conditioner | |
| JPS5969663A (en) | Refrigeration cycle | |
| JPH0621727B2 (en) | Air conditioner | |
| JPH06137690A (en) | Air conditioner | |
| JPS5847963A (en) | Refrigerating cycle of air conditioner | |
| JPH0810065B2 (en) | Building air conditioning system |