JP2609907B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP2609907B2 JP2609907B2 JP20217888A JP20217888A JP2609907B2 JP 2609907 B2 JP2609907 B2 JP 2609907B2 JP 20217888 A JP20217888 A JP 20217888A JP 20217888 A JP20217888 A JP 20217888A JP 2609907 B2 JP2609907 B2 JP 2609907B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- indoor
- indoor unit
- valve
- heat exchanger
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 (イ)産業上の利用分野 本発明は室内ユニットに複数台の室内ユニットを分岐
接続した多室型の空気調和装置に関するものである。TECHNICAL FIELD The present invention relates to a multi-room type air conditioner in which a plurality of indoor units are branched and connected to an indoor unit.
(ロ)従来の技術 空気調和機の特に室内ユニットの冷媒管から冷媒ガス
が漏れると室内が酸欠状態となり人命に危険を及ぼす虞
れがあるため、冷媒漏れを検出して圧縮機の運転を停止
させると共に冷媒ガスの放出を自動的に弁で遮断するよ
うにした装置が実公昭60−38858号公報で提示されてい
る。(B) Conventional technology If refrigerant gas leaks from the refrigerant pipe of an indoor unit, especially in an indoor unit, the interior of the room may be deficient in oxygen, which may endanger human life. A device in which the release of refrigerant gas is automatically shut off by a valve is proposed in Japanese Utility Model Publication No. 60-38858.
(ハ)発明が解決しようとする課題 上記公報で提示の装置を多室型空気調和装置に適用し
た場合、複数台の室内ユニットのうちの1台から冷媒ガ
スが漏れると残りの正常の室内ユニットも全て冷暖房運
転が停止してしまう不具合さがあった。(C) Problems to be Solved by the Invention When the device disclosed in the above publication is applied to a multi-room air conditioner, if refrigerant gas leaks from one of the plurality of indoor units, the remaining normal indoor units In addition, there was a problem that the cooling / heating operation stopped.
本発明はかかる課題を解決した空気調和装置を提供す
ることを目的としたものである。An object of the present invention is to provide an air conditioner that solves such a problem.
(ニ)課題を解決するための手段 本発明は圧縮機と室外熱交換器とを有する室外ユニッ
トに、室内熱交換器と減圧器とを有する複数台の室内ユ
ニットを分岐接続した空気調和装置において、各室内ユ
ニットのガス側分岐管及び液側分岐管に夫々開閉弁を設
けると共に各室内ユニットの冷媒管からの冷媒漏れを検
出して冷媒の漏れた室内ユニットの前記開閉弁を閉塞さ
せる制御手段を備えるようにしたものである。(D) Means for Solving the Problems The present invention relates to an air conditioner in which a plurality of indoor units having an indoor heat exchanger and a decompressor are branched and connected to an outdoor unit having a compressor and an outdoor heat exchanger. Control means for providing an on-off valve in each of the gas-side branch pipe and the liquid-side branch pipe of each indoor unit and for detecting the refrigerant leakage from the refrigerant pipe of each indoor unit to close the on-off valve of the indoor unit where the refrigerant leaks It is provided with.
又、圧縮機と室外熱交換器とを有する室外ユニット
に、室内熱交換器と電気式膨張弁とを有する複数台の室
内ユニットを分岐接続した空気調和装置において、各室
内ユニットのガス側分岐管に開閉弁を設けると共に、各
室内ユニットの冷媒管からの冷媒漏れを検出して冷媒の
漏れた室内ユニットの前記開閉弁と電気式膨張弁とを閉
塞させる制御手段を備えるようにしたものである。In an air conditioner in which an indoor unit having an indoor heat exchanger and an electric expansion valve is branched and connected to an outdoor unit having a compressor and an outdoor heat exchanger, a gas-side branch pipe of each indoor unit is provided. And a control means for detecting a refrigerant leak from the refrigerant pipe of each indoor unit and closing the open / close valve and the electric expansion valve of the indoor unit in which the refrigerant has leaked. .
(ホ)作 用 冷房もしくは暖房運転中に任意の室内ユニットの冷媒
管から冷媒ガスが漏れるとこの漏れを検出して漏れた室
内ユニットの開閉弁及び/又は電気式膨張弁が制御手段
により閉塞されるためこの室内ユニットの冷媒管内にあ
る冷媒ガスのみが室内へ放出するにとどまり、他の室内
ユニットと室外ユニット等に内在している多量の冷媒ガ
スが放出しないため人命に危険を及ぼす虞れはない。(E) Operation When refrigerant gas leaks from the refrigerant pipe of an arbitrary indoor unit during cooling or heating operation, the leak is detected and the on-off valve and / or electric expansion valve of the leaked indoor unit is closed by the control means. Therefore, only the refrigerant gas in the refrigerant pipe of the indoor unit is released into the room, and a large amount of refrigerant gas existing in the other indoor units and the outdoor unit is not released. Absent.
しかも、他の正常の室内ユニットは圧縮機と継続運転
させることにより冷暖房運転が続行され、弊害が最小限
に抑えられる。In addition, the other normal indoor units are continuously operated with the compressor, so that the cooling and heating operation is continued, and the adverse effects are minimized.
(ヘ)実施例 本発明の一実施例を図面に基づいて説明すると、
(1)は圧縮機(2)と四方弁(3)と室外熱交換器
(4)とを有する室外ユニット、(5a)(5b)(5c)は
室内熱交換器(6a)(6b)(6c)と毛細管からなる減圧
器(7a)(7b)(7c)とを有すると共にガス側分岐管
(8a)(8b)(8c)及び液側分岐管(9a)(9b)(9c)
に夫々開閉弁(10a)(11a),(10b)(11b),(10
c)(11c)を設けた室内ユニットである。(F) Embodiment One embodiment of the present invention will be described with reference to the drawings.
(1) is an outdoor unit having a compressor (2), a four-way valve (3) and an outdoor heat exchanger (4), and (5a) (5b) (5c) are indoor heat exchangers (6a) (6b) ( 6c) and a pressure reducer (7a) (7b) (7c) composed of a capillary tube, and the gas side branch pipes (8a) (8b) (8c) and the liquid side branch pipes (9a) (9b) (9c)
Open / close valves (10a) (11a), (10b) (11b), (10
c) An indoor unit equipped with (11c).
(12a)(12b)(12c)は各室内ユニット(5a)(5
b)(5c)に設けられた制御手段で、各室内ユニットの
冷媒管から各室内空間へ冷媒ガスが漏れると冷媒ガスを
構成するハロゲン元素を検出するかもしくは酸欠を検出
する冷媒漏れ検出器(13a)(13b)(13c)と警報器(1
4a)(14b)(14c)とを備えており、冷媒漏れ検出器
(13a)(13b)(13c)からの信号を夫々の制御手段(1
2a)(12b)(12c)が個別に入力して開閉弁(10a)(1
1a),(10b)(11b),(10c)(11c)を閉塞させると
同時に警報器(14a)(14b)(14c)を作動させて冷媒
洩れを報知するようになっている。(12a) (12b) (12c) is for each indoor unit (5a) (5
b) A refrigerant leak detector that detects a halogen element constituting the refrigerant gas or detects oxygen deficiency when the refrigerant gas leaks from the refrigerant pipe of each indoor unit into each indoor space by the control means provided in (5c). (13a) (13b) (13c) and alarm (1
4a), (14b) and (14c) are provided, and signals from the refrigerant leak detectors (13a) (13b) (13c) are supplied to the respective control means (1).
2a) (12b) (12c) individually input and open / close valve (10a) (1
1a), (10b), (11b), (10c) and (11c) are closed, and at the same time, alarm devices (14a), (14b) and (14c) are activated to notify the leakage of refrigerant.
本発明装置は以上の如く構成されており、冷房運転時
は四方弁(3)を実線状態に設定することにより圧縮機
(2)から吐出された冷媒は四方弁(3)−室外熱交換
器(4)−開閉弁(11a)(11b)(11c)−減圧器(7
a)(7b)(7c)−室内熱交換器(6a)(6b)(6c)−
開閉弁(10a)(10b)(10c)−四方弁(3)−圧縮機
(2)と循環し、室外熱交換器(4)が凝縮器として、
室内熱交換器(6a)(6b)(6c)が蒸発器として夫々作
用して各室内が同時に冷房される。The device of the present invention is configured as described above, and the refrigerant discharged from the compressor (2) is set by setting the four-way valve (3) to the solid line state during the cooling operation so that the four-way valve (3) -the outdoor heat exchanger. (4)-On-off valve (11a) (11b) (11c)-Pressure reducer (7
a) (7b) (7c)-Indoor heat exchanger (6a) (6b) (6c)-
It circulates with the on-off valves (10a) (10b) (10c) -the four-way valve (3) -the compressor (2), and the outdoor heat exchanger (4) as a condenser,
The indoor heat exchangers (6a) (6b) (6c) act as evaporators to cool each room at the same time.
又、暖房運転時は四方弁(3)を破線状態に設定する
ことにより圧縮機(2)から吐出された冷媒は四方弁
(3)−開閉弁(10a)(10b)(10c)−室内熱交換器
(6a)(6b)(6c)−減圧器(7a)(7b)(7c)−開閉
弁(11a)(11b)(11c)−室外熱交換器(4)−四方
弁(3)−圧縮機(2)と循環し、室内熱交換器(6a)
(6b)(6c)が凝縮器として、室外熱交換器(4)が蒸
発器として夫々作用して各室内が同時に暖房される。Also, during heating operation, the refrigerant discharged from the compressor (2) by setting the four-way valve (3) in the broken line state causes the four-way valve (3) -open / close valves (10a) (10b) (10c) -indoor heat Exchanger (6a) (6b) (6c) -Decompressor (7a) (7b) (7c) -Open / close valve (11a) (11b) (11c) -Outdoor heat exchanger (4) -Four-way valve (3)- Circulates with compressor (2), indoor heat exchanger (6a)
(6b) and (6c) act as condensers and the outdoor heat exchanger (4) acts as an evaporator, respectively, so that each room is heated simultaneously.
かかる冷暖房運転中に例えば室内ユニット(5a)内の
室内熱交換器(6a)や減圧器(7a)の冷媒管接続箇所等
から冷媒ガスが漏れてこの室内ユニット(5a)が設定さ
れている室内空間に放出されるとこれを冷媒漏れ検出器
(13a)が検出して制御手段(12a)から制御信号が出力
され、開閉弁(10a)(11a)を閉塞させると同時に警報
器(14a)を作動させて冷媒漏れを報知する。During such a heating / cooling operation, for example, the refrigerant gas leaks from the refrigerant pipe connection points of the indoor heat exchanger (6a) and the pressure reducer (7a) in the indoor unit (5a), and the indoor unit (5a) is set in the room When the refrigerant is released into the space, the refrigerant leak detector (13a) detects the refrigerant and a control signal is output from the control means (12a). The on-off valves (10a) and (11a) are closed, and the alarm (14a) is simultaneously activated. Activate to signal a refrigerant leak.
従って室内ユニット(5a)の冷媒管内にある冷媒ガス
のみが室内空間へ放出するにとどまり、他の室内ユニッ
ト(5b)(5c)と室外ユニット(1)並びにユニット間
配管(15)(16)等に内在している多量の冷媒ガスが狭
い一室内へ放出されないため人命に危険を及ぼす虞れは
ない。Therefore, only the refrigerant gas in the refrigerant pipe of the indoor unit (5a) is released to the indoor space, and the other indoor units (5b) and (5c) and the outdoor unit (1) and the inter-unit piping (15) (16), etc. Since a large amount of the refrigerant gas contained in the fuel cell is not discharged into a small room, there is no danger of causing a danger to human life.
しかも他の正常の室内ユニット(5b)(5c)は圧縮機
(2)を継続運転されることにより冷暖房運転が続行さ
れ、室内ユニット(5a)の冷媒ガス漏れにより他の正常
の室内ユニット(5b)(5c)も運転を停止するといった
弊害はない。Moreover, the other normal indoor units (5b) and (5c) continue to operate the compressor (2) to continue the cooling / heating operation, and the other normal indoor units (5b) due to refrigerant gas leakage of the indoor unit (5a). ) (5c) does not have the adverse effect of stopping the operation.
第2図は本発明の他実施例を示すもので、一実施例と
異なるのは液側分岐管(9a)(9b)(9c)の開閉弁(11
a)(11b)(11c)と減圧器(7a)(7b)(7c)の代わ
りに冷媒減圧作用と冷媒遮断作用を有する電気式膨張弁
(17a)(17b)(17c)を設けた点であり、例えば室内
ユニット(5a)から冷媒ガスが漏れると一実施例と同様
に制御手段(12a)が作動して開閉弁(10a)と電気式膨
張弁(17a)とが閉塞し、冷媒ガスの漏れを最小限にく
い止めるようになっている。FIG. 2 shows another embodiment of the present invention, which is different from one embodiment in that the on-off valves (11) of the liquid side branch pipes (9a) (9b) (9c) are different.
a) Instead of (11b) (11c) and pressure reducers (7a) (7b) (7c), electric expansion valves (17a) (17b) (17c) having a refrigerant decompression function and a refrigerant cutoff function are provided. Yes, for example, when the refrigerant gas leaks from the indoor unit (5a), the control means (12a) is activated to close the on-off valve (10a) and the electric expansion valve (17a) as in the one embodiment, and the refrigerant gas It is designed to minimize leaks.
尚、上記両実施例において、開閉弁(10a)(10b)
(10c),(11a)(11b)(11c)及び電気式膨張弁(17
a)(17b)(17c)を開閉させることにより室内ユニッ
ト(5a)(5b)(5c)の同時運転と単独運転との切換え
を行なうことができる。In both of the above embodiments, the on-off valves (10a) (10b)
(10c), (11a), (11b), (11c) and the electric expansion valve (17
a) By opening and closing (17b) and (17c), simultaneous operation and independent operation of the indoor units (5a), (5b) and (5c) can be switched.
(ト)発明の効果 本発明は複数台の室内ユニットを同時に冷房もしくは
暖房している時に任意の室内ユニットの冷媒管から冷媒
ガスが漏れるとこの漏れを検出して漏れた室内ユニット
の開閉弁及び/又は電気式膨張弁が制御手段により閉塞
されるようにしたので、この室内ユニットの冷媒管内に
ある冷媒ガスのみが室内へ放出するにとどまり他の室内
ユニットと室外ユニット等に内在している多量の冷媒ガ
スが放出しないため、人命に危険を及ぼすのを防止する
ことができる。(G) Effect of the Invention The present invention detects the leak when a refrigerant gas leaks from a refrigerant pipe of an arbitrary indoor unit while simultaneously cooling or heating a plurality of indoor units, and an on-off valve of the leaked indoor unit and And / or the electric expansion valve is closed by the control means, so that only the refrigerant gas in the refrigerant pipe of this indoor unit is discharged into the room, and a large amount of refrigerant gas is present in other indoor units and outdoor units. Since no refrigerant gas is released, it is possible to prevent danger to human life.
しかも、この室内ユニットの冷媒ガス漏れにより他の
正常の室内ユニットの運転を停止させるといった弊害は
なく、冷房もしくは暖房運転をそのまま続行することが
できる。Moreover, there is no adverse effect such that the operation of the other normal indoor units is stopped due to the leakage of the refrigerant gas from the indoor units, and the cooling or heating operation can be continued as it is.
併せて、電気式膨張弁を、冷媒ガスの放出をくい止め
る遮断弁として兼用することにより開閉弁の個数を減ら
して冷媒回路構成を簡略することができる。In addition, by using the electric expansion valve also as a shut-off valve for stopping the discharge of refrigerant gas, the number of on-off valves can be reduced and the refrigerant circuit configuration can be simplified.
第1図は本発明の一実施例を示す空気調和装置の冷媒回
路図、第2図は本発明の他実施例を示す空気調和装置の
冷媒回路図である。 (1)……室外ユニット、(2)……圧縮機、(4)…
…室外熱交換器、(5a)(5b)(5c)……室内ユニッ
ト、(6a)(6b)(6c)……室内熱交換器、(7a)(7
b)(7c)……減圧器、(8a)(8b)(8c)……ガス分
岐管、(9a)(9b)(9c)……液分岐管、(10a)(10
b)(10c),(11a)(11b)(11c)……開閉弁、(12
a)(12b)(12c)……制御手段、(17a)(17b)(17
c)……電気式膨張弁。FIG. 1 is a refrigerant circuit diagram of an air conditioner showing one embodiment of the present invention, and FIG. 2 is a refrigerant circuit diagram of an air conditioner showing another embodiment of the present invention. (1) Outdoor unit (2) Compressor (4)
... outdoor heat exchanger, (5a) (5b) (5c) ... indoor unit, (6a) (6b) (6c) ... indoor heat exchanger, (7a) (7
b) (7c) …… Decompressor, (8a) (8b) (8c) …… Gas branch pipe, (9a) (9b) (9c) …… Liquid branch pipe, (10a) (10
b) (10c), (11a) (11b) (11c) ... On-off valve, (12
a) (12b) (12c) ... Control means (17a) (17b) (17
c) ... Electric expansion valve.
Claims (2)
ットに、室内熱交換器と減圧器とを有する複数台の室内
ユニットを分岐接続した空気調和装置において、各室内
ユニットのガス側分岐管及び液側分岐管に夫々開閉弁を
設けると共に、各室内ユニットの冷媒管からの冷媒漏れ
を検出して冷媒の漏れた室内ユニットの前記開閉弁を閉
塞させる制御手段を備えたことを特徴とする空気調和装
置。1. An air conditioner in which a plurality of indoor units having an indoor heat exchanger and a pressure reducer are branch-connected to an outdoor unit having a compressor and an outdoor heat exchanger, and a gas side branch of each indoor unit. The pipe and the liquid side branch pipe are respectively provided with an on-off valve, and a control means for detecting a refrigerant leak from a refrigerant pipe of each indoor unit and closing the on-off valve of the indoor unit where the refrigerant leaks is provided. Air conditioner that does.
ットに、室内熱交換器と電気式膨張弁とを有する複数台
の室内ユニットを分岐接続した空気調和装置において、
各室内ユニットのガス側分岐管に開閉弁を設けると共
に、各室内ユニットの冷媒管からの冷媒漏れを検出して
冷媒の漏れた室内ユニットの前記開閉弁と電気式膨張弁
とを閉塞させる制御手段を備えたことを特徴とする空気
調和装置。2. An air conditioner in which a plurality of indoor units having an indoor heat exchanger and an electric expansion valve are branched and connected to an outdoor unit having a compressor and an outdoor heat exchanger,
Control means for providing an open / close valve on the gas side branch pipe of each indoor unit, and detecting a refrigerant leak from the refrigerant pipe of each indoor unit to close the open / close valve and the electric expansion valve of the indoor unit where the refrigerant has leaked. An air conditioner comprising:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20217888A JP2609907B2 (en) | 1988-08-12 | 1988-08-12 | Air conditioner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20217888A JP2609907B2 (en) | 1988-08-12 | 1988-08-12 | Air conditioner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0252967A JPH0252967A (en) | 1990-02-22 |
JP2609907B2 true JP2609907B2 (en) | 1997-05-14 |
Family
ID=16453254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20217888A Expired - Lifetime JP2609907B2 (en) | 1988-08-12 | 1988-08-12 | Air conditioner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2609907B2 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3414464B2 (en) * | 1993-12-09 | 2003-06-09 | 松下電器産業株式会社 | Air conditioner |
JP3407441B2 (en) * | 1994-12-20 | 2003-05-19 | 松下電器産業株式会社 | Dehumidifier |
KR100432224B1 (en) * | 2002-05-01 | 2004-05-20 | 삼성전자주식회사 | Refrigerant leakage detecting method for air conditioner |
JP5211894B2 (en) * | 2008-06-27 | 2013-06-12 | ダイキン工業株式会社 | Air conditioner |
US20120272672A1 (en) * | 2010-02-10 | 2012-11-01 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
JP5517789B2 (en) * | 2010-07-02 | 2014-06-11 | 日立アプライアンス株式会社 | Air conditioner |
CN102213463B (en) * | 2011-05-26 | 2013-11-06 | 广东美的电器股份有限公司 | Air conditioner using combustible refrigerant and control method thereof |
JP6156528B1 (en) * | 2016-02-16 | 2017-07-05 | ダイキン工業株式会社 | Refrigeration equipment |
JP6081033B1 (en) * | 2016-05-24 | 2017-02-15 | 三菱電機株式会社 | Air conditioner |
JP7215819B2 (en) * | 2017-01-11 | 2023-01-31 | ダイキン工業株式会社 | Air conditioner and indoor unit |
JP6798322B2 (en) | 2017-01-16 | 2020-12-09 | ダイキン工業株式会社 | Refrigeration equipment with shutoff valve |
WO2023144734A1 (en) | 2022-01-28 | 2023-08-03 | Ricoh Company, Ltd. | Recording body, method for producing recording body, and recording method |
CN114754463A (en) * | 2022-03-17 | 2022-07-15 | 青岛海尔空调电子有限公司 | Refrigerant leakage control method and device and multi-split air conditioner |
-
1988
- 1988-08-12 JP JP20217888A patent/JP2609907B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0252967A (en) | 1990-02-22 |
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