JP2621948B2 - Relief valve - Google Patents

Relief valve

Info

Publication number
JP2621948B2
JP2621948B2 JP63236772A JP23677288A JP2621948B2 JP 2621948 B2 JP2621948 B2 JP 2621948B2 JP 63236772 A JP63236772 A JP 63236772A JP 23677288 A JP23677288 A JP 23677288A JP 2621948 B2 JP2621948 B2 JP 2621948B2
Authority
JP
Japan
Prior art keywords
refrigerant
valve
valve body
pipe
pressure
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
JP63236772A
Other languages
Japanese (ja)
Other versions
JPH0285580A (en
Inventor
壮一郎 池山
安春 坂口
秋信 上東
雅憲 柚木
元徳 大熨
幸治 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takenaka Corp
Original Assignee
Takenaka Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Takenaka Corp filed Critical Takenaka Corp
Priority to JP63236772A priority Critical patent/JP2621948B2/en
Publication of JPH0285580A publication Critical patent/JPH0285580A/en
Application granted granted Critical
Publication of JP2621948B2 publication Critical patent/JP2621948B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、例えば、凝縮器と室内ユニットとの間でフ
ロン等の冷媒を循環させるヒートパイプを構成して冷房
を行なう冷房設備や、蒸発器と室内ユニットとの間で冷
媒を循環させるヒートパイプを構成して暖房を行なう暖
房設備等において用いられる逃し弁に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to, for example, a cooling facility for performing cooling by configuring a heat pipe for circulating a refrigerant such as chlorofluorocarbon between a condenser and an indoor unit; The present invention relates to a relief valve used in a heating facility or the like that forms a heat pipe for circulating a refrigerant between a vessel and an indoor unit and performs heating.

〔従来の技術〕[Conventional technology]

例えば、前記の冷房設備や暖房設備では、ヒートパイ
プを構成する冷媒配管のジョイント部でのシール不良や
冷媒配管に亀裂が生じること等によって冷媒の漏出が生
じた場合、それが多量であると、冷媒自体には毒性がな
いものの、冷媒ガスの室内での濃度が高くなることによ
って、酸欠事故を起すおそれがある。そこで、一般に
は、冷媒の漏出が生じた場合、冷媒配管内の冷媒を建物
外(大気)に放出することにより、冷媒ガスの室内への
漏出量を少なくする手段が採られる。
For example, in the cooling equipment and the heating equipment, when leakage of the refrigerant occurs due to a defective seal or a crack in the refrigerant pipe at the joint portion of the refrigerant pipe constituting the heat pipe, when the amount of the refrigerant is large, Although the refrigerant itself has no toxicity, an increase in the concentration of the refrigerant gas in the room may cause an oxygen deficiency accident. Therefore, in general, when leakage of the refrigerant occurs, means for reducing the leakage amount of the refrigerant gas into the room by discharging the refrigerant in the refrigerant pipe to the outside of the building (atmosphere) is adopted.

そして、大気に冷媒を放出する逃し弁として、従来で
は、冷媒配管内の冷媒の圧力を検出する圧力センサが常
圧よりも低い設定圧を検出することに基づいて、冷媒配
管を大気に自動開放する電磁式のものが知られている。
Conventionally, as a relief valve for discharging the refrigerant to the atmosphere, the refrigerant pipe is automatically opened to the atmosphere based on a pressure sensor that detects the pressure of the refrigerant in the refrigerant pipe detecting a set pressure lower than the normal pressure. An electromagnetic type is known.

〔発明が解決しようとする課題〕[Problems to be solved by the invention]

ところが、前記従来の電磁式の逃し弁によるときは、
断線や電気回路の故障、停電等、開閉作動する機械要素
以外でのトラブルが生じ易いため、十分な信頼性を得る
ことがむずかしかった。
However, when using the conventional electromagnetic relief valve,
It is difficult to obtain sufficient reliability because troubles other than mechanical elements that open and close, such as disconnection, failure of an electric circuit, and power failure, are likely to occur.

本発明の目的は、冷媒配管等、流体輸送管の内圧が設
定圧よりも低下したときにその流体輸送管内の流体を外
部に放出する逃し作用の信頼性を十分なものとできる逃
し弁を提供する点にある。
An object of the present invention is to provide a relief valve capable of sufficiently increasing the reliability of a relief operation for releasing a fluid in a fluid transport pipe to the outside when the internal pressure of the fluid transport pipe such as a refrigerant pipe falls below a set pressure. Is to do.

〔課題を解決するための手段〕[Means for solving the problem]

本発明による逃し弁の特徴構成は、冷媒配管からなる
流体輸送管に接続するための接続口と冷媒放出口とを備
えた弁箱を設け、下方向に移動することによって前記冷
媒放出口を開放する弁体を、前記弁箱内に設け、前記弁
体を開放側に移動付勢する付勢手段と、その付勢手段に
よる付勢力に抗して前記弁体を閉塞位置に移動操作する
ための操作手段と、前記弁箱内の設定以上の冷媒圧を駆
動力として前記弁体を前記付勢手段による付勢力に抗し
て閉塞位置に保持する保持手段とを設けてある点にあ
る。
The feature configuration of the relief valve according to the present invention is that a valve box having a connection port for connecting to a fluid transport pipe composed of a refrigerant pipe and a refrigerant discharge port is provided, and the refrigerant discharge port is opened by moving downward. A valve body provided in the valve box, for urging the valve body to move to the open side, and for moving the valve body to the closed position against the urging force of the urging means. And a holding means for holding the valve body in the closed position against the urging force of the urging means by using the refrigerant pressure equal to or higher than the setting in the valve box as a driving force.

〔作 用〕(Operation)

流体輸送管に接続する弁箱内の冷媒圧が設定以上のと
きは、保持手段によりその設定以上の冷媒圧を駆動力と
して弁体が閉塞位置に保持されて、冷媒放出口が閉塞保
持され、その弁箱内から冷媒放出口を介して冷媒が放出
されることが防止される。他方、前記弁箱内の冷媒圧が
設定以下に低下したときには、その冷媒圧の低下により
保持手段による保持力が付勢手段による付勢力よりも小
となって弁体が開放移動して、冷媒放出口が開放し、そ
の弁箱内から冷媒放出口を介して冷媒が放出される。従
って、流体輸送管内の正常時の冷媒圧および漏出が生じ
ることによる冷媒圧の低下具合等に基づいて、付勢手段
による付勢力を設定することにより、流体輸送管に漏出
が生じた場合、その流体輸送管内の冷媒を外部に放出で
きる。
When the refrigerant pressure in the valve box connected to the fluid transport pipe is equal to or higher than a setting, the valve body is held in the closed position by the holding unit with the refrigerant pressure equal to or higher than the set pressure as a driving force, and the refrigerant discharge port is closed and held, The discharge of the refrigerant from the inside of the valve box via the refrigerant discharge port is prevented. On the other hand, when the refrigerant pressure in the valve box falls below the setting, the holding force of the holding means becomes smaller than the urging force of the urging means due to the decrease of the refrigerant pressure, and the valve element opens and moves, and The discharge port is opened, and the refrigerant is discharged from the valve box through the refrigerant discharge port. Therefore, when leakage occurs in the fluid transport pipe by setting the urging force by the urging means based on the refrigerant pressure at normal time in the fluid transport pipe and the degree of decrease in the refrigerant pressure due to leakage, etc. The refrigerant in the fluid transport pipe can be discharged to the outside.

また、付勢手段による開放側への移動付勢の一役を、
前記弁体そのものの重さによって果たすことができるか
ら、例えば、スプリング(横方向に移動することによっ
て冷媒放出口を開放可能に設けてある弁体を、横方向開
放側へ付勢するように設けたスプリング)のみで付勢手
段を構成するのに比べて、スプリングトラブル(変形や
破壊)が発生した場合に、付勢力が喪失してしまうとい
う事態を、弁体の重量による付勢力の確保によって防止
することが可能となる。即ち、冷媒配管に適応させる逃
し弁においては、長期間にわたって弁体が閉塞位置に保
持される環境が続くのが一般的であり、その場合、付勢
手段には、保持手段によって付勢力に抗した力が継続し
て作用するから、スプリングのみによる付勢手段の場合
は、経年劣化によって上述の事態をまねく危険性があ
る。それに対比して、本発明の逃し弁によれば、作動の
信頼性を増すことが可能となる。
Also, a part of the urging means to bias the movement to the open side,
Since this can be achieved by the weight of the valve body itself, for example, a spring (provided so as to urge the valve body provided so that the refrigerant discharge port can be opened by moving in the lateral direction toward the laterally open side) In contrast to the construction of the biasing means using only the spring, when the spring trouble (deformation or destruction) occurs, the situation where the biasing force is lost is reduced by securing the biasing force by the weight of the valve body. This can be prevented. That is, in the relief valve adapted to the refrigerant pipe, the environment in which the valve body is kept in the closed position for a long period of time generally continues. In this case, the biasing means is provided with a biasing force against the biasing force by the holding means. In the case of the urging means using only the spring, there is a risk that the above-mentioned situation may be caused due to aging. In contrast, according to the relief valve of the present invention, the reliability of operation can be increased.

そして、上記のように、流体輸送管からの冷媒の漏出
によって、低下する流体輸送管内の冷媒圧と付勢手段に
よる付勢力と駆動力として、弁体の閉保持および開放を
行ない、かつ、操作手段によって弁体の付勢力に抗した
閉塞位置への移動を行なうため、弁体の駆動およびその
駆動制御において、ソレノイド等のアクチュエータやそ
れの制御回路が不要である。
Then, as described above, the valve body is closed and held and opened as the refrigerant pressure in the fluid transport pipe and the urging force and the driving force of the urging means, which decrease due to the leakage of the refrigerant from the fluid transport pipe, and the operation is performed. Since the valve body is moved to the closing position against the urging force of the valve body, an actuator such as a solenoid or a control circuit therefor is not required for driving the valve body and controlling its drive.

〔発明の効果〕〔The invention's effect〕

従って、本発明は、機械要素のみから構成することが
できて、流体輸送管に漏出が生じた場合にその流体輸送
管内の流体を外部に逃がすことができる機能に信頼性の
ある逃し弁を提供できるようになった。
Therefore, the present invention provides a relief valve which can be constituted only by mechanical elements and has a function of releasing a fluid in the fluid transport tube to the outside when leakage occurs in the fluid transport tube. Now you can.

〔実施例〕〔Example〕

次に本発明の実施例を示す。 Next, examples of the present invention will be described.

第2図に示すように、建物の上階(最上階や屋上階
等)に、氷畜熱槽(1)と、その氷畜熱槽(1)の畜熱
冷熱を用いて冷媒ガスを液化させる凝縮器(2)とを配
設し、建物の下階(最下階や床下ピット等)に、温水畜
熱槽(3)と、その温水畜熱槽(3)の畜熱温熱を用い
て冷媒液を液化させる蒸発器(4)とを配設し、建物の
空調対象箇所に、冷媒液をガス化させることにより空調
用空気を冷却する冷房用熱交換器(5)と冷媒液を液化
させることにより空調用空気を加熱する暖房用熱交換器
(6)とを配管し、前記凝縮器(2)と冷媒用熱交換器
(5)との間で冷媒を自然循環させるループ型のヒート
パイプ(7)と、前記蒸発器(4)と暖房用熱交換器
(6)との間で冷媒を自然循環させるループ型の暖房用
のヒートパイプ(8)とを設けて空調設備を構成する。
As shown in FIG. 2, the refrigerant gas is liquefied on the upper floor of the building (top floor, rooftop floor, etc.) using the ice storage heat tank (1) and the storage heat of the ice storage heat tank (1). A condenser (2) to be disposed is provided, and a hot water storage heat tank (3) and a storage heat of the hot water storage heat tank (3) are used on the lower floor (the lowest floor, underfloor pit, etc.) of the building. An evaporator (4) for liquefying the refrigerant liquid by means of a cooling heat exchanger (5) for cooling the air-conditioning air by gasifying the refrigerant liquid at a location to be air-conditioned in the building; A heating-type heat exchanger (6) for heating air-conditioning air by liquefaction is piped, and a loop-type refrigerant that naturally circulates refrigerant between the condenser (2) and the refrigerant heat exchanger (5). A heat pipe (7), a loop-type heating heat pipe (8) for naturally circulating a refrigerant between the evaporator (4) and the heating heat exchanger (6). Provided to configure the air-conditioning equipment.

前記冷房用熱交換器(5)および暖房用熱交換器
(6)は、室内ユニット(9)として組込まれている。
なお、(10)は受液器であり、(11)は、畜熱用の製氷
機で、その排熱は前記温水畜熱槽(3)の熱源として利
用されている。
The cooling heat exchanger (5) and the heating heat exchanger (6) are incorporated as an indoor unit (9).
In addition, (10) is a liquid receiver, (11) is an ice maker for animal heat, and the exhaust heat is used as a heat source of the hot water animal heat tank (3).

前記ヒートパイプ(7),(8)を構成するための冷
媒配管(12)の複数箇所夫々には、それら冷媒配管(1
2)の内圧が常圧よりも低い設定圧以下に低下すること
で自動開放して、冷媒を大気(建物外)に逃す逃し弁
(13)が分岐管(14)を介して分岐接続されている。前
記常圧および設定圧の具体数値例を挙げると、常圧が10
kg/cm2、設定圧が8kg/cm2である。
Each of the refrigerant pipes (12) for constituting the heat pipes (7) and (8) has a refrigerant pipe (1).
The relief valve (13) that opens automatically when the internal pressure of 2) falls below the set pressure lower than the normal pressure and allows the refrigerant to escape to the atmosphere (outside the building) is branched and connected via the branch pipe (14). I have. To give specific numerical examples of the normal pressure and the set pressure, the normal pressure is 10
kg / cm 2 , and the set pressure is 8 kg / cm 2 .

前記逃し弁(13)は、第1図に示すように、前記分岐
管(14)に接続するための接続口(13a)と上方に向か
って開放する冷媒放出口(13b)とを備えた弁箱(13A)
を設け、その弁箱(13A)内に、前記冷媒放出口(13b)
を上下移動による開閉する弁体(13B)を設け、付勢手
段と、操作手段と、保持手段と、弁(15)と、作動確認
用の弁(16)とを設けて構成されている。
As shown in FIG. 1, the relief valve (13) has a connection port (13a) for connecting to the branch pipe (14) and a refrigerant discharge port (13b) that opens upward. Box (13A)
And the refrigerant outlet (13b) is provided in the valve box (13A).
A valve body (13B) that opens and closes by moving up and down is provided, and an urging means, an operating means, a holding means, a valve (15), and a valve (16) for confirming operation are provided.

前記弁箱(13A)および弁体(13B)のシート(17
A),(17B)のうち、弁体(13B)側のシート(17B)
は、テフロンから構成されている。
The seat (17) of the valve box (13A) and valve body (13B)
A) Of (17B), the seat (17B) on the valve body (13B) side
Is composed of Teflon.

前記付勢手段は、前記弁体(13B)の荷重とスプリン
グ(18)の弾性力とによって、前記弁体(13B)を開放
側、つまり、下側に付勢する手段である。
The urging means is means for urging the valve element (13B) to the open side, that is, downward, by the load of the valve element (13B) and the elastic force of the spring (18).

前記操作手段は、前記付勢手段による付勢力に抗して
前記弁体(13B)を閉塞位置に移動操作するための手段
であり、具体的には、前記弁箱(13A)の底部を上下に
摺動自在に貫通し、上手段に摺動することにより前記弁
体(13B)を閉塞位置に押上げるロッド(19)である。
The operating means is means for moving the valve element (13B) to the closed position against the urging force of the urging means. Specifically, the operation means moves the bottom of the valve box (13A) up and down. A rod (19) that slidably penetrates through the upper body and pushes the valve body (13B) to a closed position by sliding the upper means.

前記保持手段は、前記弁箱(13A)内の設定以上の冷
媒圧を駆動力として前記弁体(13B)を前記付勢手段に
よる付勢力に抗して閉塞位置に保持する手段である。具
体的には、前記弁体(13B)の下面に、弁箱(13A)内の
流体圧を受けることにより、その流体圧が設定以上のと
きのみ、前記付勢手段による付勢力よりも大なる上方へ
の移動力を発生する受圧面(20)を形成して構成してあ
る。
The holding means is means for holding the valve element (13B) at the closed position against the urging force of the urging means using the refrigerant pressure in the valve box (13A) that is equal to or higher than the set pressure as the driving force. Specifically, by receiving the fluid pressure in the valve box (13A) on the lower surface of the valve body (13B), the biasing force is greater than the biasing force of the biasing means only when the fluid pressure is equal to or higher than a set value. A pressure receiving surface (20) for generating an upward moving force is formed.

前記弁(15)は、前記弁箱(13A)の接続口(13A)を
開閉するためのものである。
The valve (15) is for opening and closing a connection port (13A) of the valve box (13A).

前記作動確認用の弁(16)は、前記弁箱(13A)内を
外部に貫通・遮断するためのものであって、弁箱(13
A)に取付けられている。
The operation check valve (16) is used to penetrate and shut off the inside of the valve box (13A) to the outside.
A) Installed.

もって、逃し弁(13)は、冷媒配管(12)内の冷媒圧
力が設定以上となるまで、ロッド(19)を用いて弁体
(13B)を閉塞位置に保持しておくことにより、冷媒配
管(12)内への冷媒充填において冷媒放出口(13b)か
ら冷媒が不用意に漏出することを防止し、冷媒圧力が設
定以上となった後、その冷媒圧力を用いて冷媒放出口
(13b)を閉塞保持するようになっている。そして、冷
媒配管(12)からの冷媒の漏出が生じた場合には、その
冷媒の漏出によって弁箱(13A)内の冷媒圧力が設定よ
りも低下することで、弁体(13B)が自動開放し、冷媒
放出口(13b)から冷媒配管(12)内の冷媒を逃すよう
になっている。これにより、冷媒配管(12)からの冷媒
の漏出量が著しく減少されるのである。また、前記弁体
(13B)が冷媒圧力で閉塞位置に保持されている状態に
おいて、弁(15)により接続口(13a)を閉塞したの
ち、作動確認用の弁(16)を開放して弁箱(13A)内を
外部に連通させることにより、弁箱(13A)内の冷媒圧
力を設定未満とでき、このとき、弁体(13B)が自動開
放したか否かをもって、冷媒漏出時に正常に作動できる
か否かを確認できるのである。
Accordingly, the relief valve (13) is provided with the rod (19) to hold the valve body (13B) in the closed position until the refrigerant pressure in the refrigerant pipe (12) becomes equal to or higher than the set pressure. (12) Prevents the refrigerant from inadvertently leaking from the refrigerant discharge port (13b) when the refrigerant is charged into the inside. Is kept closed. If the refrigerant leaks from the refrigerant pipe (12), the refrigerant leaks and the refrigerant pressure in the valve box (13A) drops below the set pressure, so that the valve (13B) automatically opens. The refrigerant in the refrigerant pipe (12) escapes from the refrigerant discharge port (13b). This significantly reduces the amount of refrigerant leaking from the refrigerant pipe (12). Further, in a state where the valve body (13B) is held at the closed position by the refrigerant pressure, after the connection port (13a) is closed by the valve (15), the valve (16) for confirming operation is opened to open the valve. By connecting the inside of the box (13A) to the outside, the refrigerant pressure in the valve box (13A) can be made lower than the set value. At this time, whether or not the valve body (13B) has been automatically opened and the You can check whether it can work.

〔別実施例〕(Another embodiment)

以下、本発明の別実施例を示す。 Hereinafter, another embodiment of the present invention will be described.

[1]上記実施例では、冷媒配管(12)の逃し弁への適
応例を示したが、本発明は、第3図に示すように、温水
発生器(21)と室内ユニット(22)との間で温水を循環
させる暖房用の温水配管(12)において、その温水配管
(12)に水漏れが生じた場合にその温水配管(12)中の
温水を排水部に排出して、室内への水漏れを抑制するた
めの逃し弁(13)等にも適用できる。
[1] In the above embodiment, an example in which the refrigerant pipe (12) is applied to the relief valve has been described. However, as shown in FIG. 3, the present invention relates to a hot water generator (21) and an indoor unit (22). In a hot water pipe for heating (12) that circulates hot water between the hot water pipes (12), if water leaks from the hot water pipe (12), the hot water in the hot water pipe (12) is discharged to the drainage section and It can also be applied to a relief valve (13) for suppressing water leakage.

[2]上記実施例において、第1図中の二点鎖線で示す
ように、冷媒放出口(13b)の外側に冷媒検知センサ(2
3)を設けて実施する。この場合、冷媒配管(12)から
の冷媒の漏出が生じているか否かを容易に知ることがで
きる。
[2] In the above embodiment, as indicated by a two-dot chain line in FIG. 1, a refrigerant detection sensor (2) is provided outside the refrigerant discharge port (13b).
3) to be implemented. In this case, it can be easily known whether or not the refrigerant leaks from the refrigerant pipe (12).

[3]尚、特許請求の範囲の項に図面との対照を便利に
する為に符号を記すが、該記入により本発明は添付図面
の構造に限定されるものではない。
[3] In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure shown in the attached drawings.

【図面の簡単な説明】[Brief description of the drawings]

図面は本発明に係る逃し弁の実施例を示し、第1図は断
面図、第2図は空調配管図であり、第3図は本発明の別
実施例を示す温水配管図である。 (12)……流体輸送管、(13a)……接続口、 (13b)……冷媒放出口、(13A)……弁箱、 (13B)……弁体、(15)……弁、(16)……作動確認
用の弁。
The drawings show an embodiment of the relief valve according to the present invention. FIG. 1 is a sectional view, FIG. 2 is an air conditioning piping diagram, and FIG. 3 is a hot water piping diagram showing another embodiment of the present invention. (12) ... fluid transport pipe, (13a) ... connection port, (13b) ... refrigerant discharge port, (13A) ... valve box, (13B) ... valve body, (15) ... valve, ( 16) Valve for checking operation.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 柚木 雅憲 大阪府大阪市東区本町4丁目27番地 株 式会社竹中工務店大阪本店内 (72)発明者 大熨 元徳 大阪府大阪市東区本町4丁目27番地 株 式会社竹中工務店大阪本店内 (72)発明者 山本 幸治 大阪府大阪市東区本町4丁目27番地 株 式会社竹中工務店大阪本店内 (56)参考文献 実開 昭57−165858(JP,U) 実開 昭59−186569(JP,U) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masanori Yuzuki 4-27 Honcho, Higashi-ku, Osaka-shi, Osaka Inside the Osaka head office of Takenaka Corporation (72) Inventor Gentoku Oshita 4-27, Honcho, Higashi-ku, Osaka-shi, Osaka (72) Inventor Koji Yamamoto 4-27, Honmachi, Higashi-ku, Osaka-shi, Osaka, Japan Inside the Takenaka Corporation Osaka Main Store (56) Reference: Shokai Sho 57-165858 (JP, U) Japanese Utility Model Showa 59-186569 (JP, U)

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】冷媒配管からなる流体輸送管(12)に接続
するための接続口(13a)と冷媒放出口(13b)とを備え
た弁箱(13A)を設け、下方向に移動することによって
前記冷媒放出口(13b)を開放する弁体(13B)を、前記
弁箱(13A)内に設け、前記弁体(13B)を開放側に移動
付勢する付勢手段と、その付勢手段による付勢力に抗し
て前記弁体(13B)を閉塞位置に移動操作するための操
作手段と、前記弁箱(13A)内の設定以上の冷媒圧を駆
動力として前記弁体(13B)を前記付勢手段による付勢
力に抗して閉塞位置に保持する保持手段とを設けてある
逃し弁。
A valve box (13A) having a connection port (13a) for connecting to a fluid transport pipe (12) comprising a refrigerant pipe and a refrigerant discharge port (13b) is provided, and is moved downward. A valve body (13B) for opening the refrigerant discharge port (13b) in the valve box (13A), and a biasing means for biasing the valve body (13B) to move toward the open side; Operating means for moving the valve body (13B) to the closed position against the urging force of the means, and the valve body (13B) using a refrigerant pressure higher than a set pressure in the valve box (13A) as a driving force. And a holding means for holding in a closed position against the urging force of the urging means.
【請求項2】前記接続口(13a)を開閉するための弁(1
5)と、前記弁箱(13A)内を外部に連通・遮断するため
の作動確認用の弁(16)とを設けてある請求項1記載の
逃し弁。
2. A valve (1) for opening and closing said connection port (13a).
5. The relief valve according to claim 1, further comprising: (5) and an operation check valve (16) for communicating and shutting off the inside of the valve box (13 A).
JP63236772A 1988-09-21 1988-09-21 Relief valve Expired - Fee Related JP2621948B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63236772A JP2621948B2 (en) 1988-09-21 1988-09-21 Relief valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63236772A JP2621948B2 (en) 1988-09-21 1988-09-21 Relief valve

Publications (2)

Publication Number Publication Date
JPH0285580A JPH0285580A (en) 1990-03-27
JP2621948B2 true JP2621948B2 (en) 1997-06-18

Family

ID=17005567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63236772A Expired - Fee Related JP2621948B2 (en) 1988-09-21 1988-09-21 Relief valve

Country Status (1)

Country Link
JP (1) JP2621948B2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57165858U (en) * 1981-04-15 1982-10-19
JPS59186569U (en) * 1983-05-31 1984-12-11 三井精機工業株式会社 Self-holding on-off valve equipped with safety device

Also Published As

Publication number Publication date
JPH0285580A (en) 1990-03-27

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