JP3387586B2 - Expansion valve with solenoid valve - Google Patents
Expansion valve with solenoid valveInfo
- Publication number
- JP3387586B2 JP3387586B2 JP29989093A JP29989093A JP3387586B2 JP 3387586 B2 JP3387586 B2 JP 3387586B2 JP 29989093 A JP29989093 A JP 29989093A JP 29989093 A JP29989093 A JP 29989093A JP 3387586 B2 JP3387586 B2 JP 3387586B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- pressure
- solenoid valve
- refrigerant passage
- 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
Links
Landscapes
- Magnetically Actuated Valves (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は冷凍サイクルの配管中に
介設される電磁弁付膨張弁に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion valve with a solenoid valve provided in piping of a refrigeration cycle.
【０００２】[0002]
【従来の技術】冷凍サイクルにおいては、膨張弁が蒸発
器と対に設けられ、蒸発器の冷凍負荷に合わせて自動的
に冷媒の流量を制御している。ところで、冷凍サイクル
においては、空調機におけるマルチエアコンや冷凍装置
における多段ショーケース等の如くに、蒸発器を複数段
設置することが行われており、この場合において、使用
していない蒸発器に冷媒を流すことはエネルギーの無駄
な消費になるので、蒸発器に連設した電磁弁で冷媒の流
れを停止するようにしている（特開昭６２−４１４８１
号）。2. Description of the Related Art In a refrigeration cycle, an expansion valve is provided in pair with an evaporator, and the flow rate of refrigerant is automatically controlled according to the refrigeration load of the evaporator. By the way, in the refrigeration cycle, a plurality of evaporators are installed, such as a multi-air conditioner in an air conditioner or a multi-stage showcase in a refrigeration system. The flow of the refrigerant wastes energy, so the electromagnetic valve connected to the evaporator stops the flow of the refrigerant (Japanese Patent Laid-Open No. 62-41481).
issue).
【０００３】[0003]
【発明が解決しようとする課題】電磁弁と膨張弁を連設
している構造において、休止していた蒸発器を動作させ
るために電磁弁を開弁すると、冷媒が圧縮機入口とほぼ
等しい圧力に成っている配管内を流れ膨張弁の入口に激
しく衝突して騒音を発生すると共に、膨張弁が開閉を短
時間内で繰り返すハンチング動作を惹起するおそれがあ
り、この冷媒による衝撃波は電磁弁の口径に従って流入
する冷媒量が大きい程激しく、また電磁弁と膨張弁間の
流路容積が大きいほど強くなり、膨張弁が配管を破損す
るおそれがあった。In the structure in which the solenoid valve and the expansion valve are connected in series, if the solenoid valve is opened to operate the evaporator that was stopped, the refrigerant has a pressure almost equal to that of the compressor inlet. There is a risk that the expansion valve will cause hunting operation that repeats opening and closing within a short period of time, as well as generating noise by violently colliding with the inlet of the expansion valve in the piping formed by The larger the amount of the refrigerant flowing in according to the bore diameter, the stronger the flow rate, and the larger the volume of the flow passage between the solenoid valve and the expansion valve, the stronger.
【０００４】本発明は上記した点に着目して為されたも
のであり、かかる電磁弁の開弁時における衝撃波の発生
を抑制するようにしたものである。The present invention has been made by paying attention to the above points, and suppresses the generation of a shock wave when the electromagnetic valve is opened.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
め、第１番目の発明においては、弁本体の一次口と二次
口間において両端に弁座を有する略直角状に曲折した冷
媒通路を形成し、圧力応動部材によって区画される内側
圧力室と該二次口間に均圧孔を設けると共に外側圧力室
に感温筒を接続し、該圧力応動部材の動作に従って移動
する膨張弁体を該冷媒通路の該二次口側に形成された弁
座に接離させ、該冷媒通路の他側に形成された弁座に、
プランジャに直付けされた電磁弁の弁体を接離させ、該
電磁弁の非通電時においては該弁体が閉弁すると共に、
該電磁弁の通電時においては該弁体が開弁する構成を採
用し、第２番目の発明においては、弁本体の一次口と二
次口間において両端に弁座を有する略直角状に曲折した
冷媒通路を形成し、圧力応動部材によって区画される内
側圧力室と該二次口間に均圧孔を設けると共に外側圧力
室に感温筒を接続し、該圧力応動部材の動作に従って移
動する膨張弁体を該冷媒通路の該二次口側に形成された
弁座に接離させ、該冷媒通路の他側に形成された弁座に
電磁弁の主弁体を接離させ、該電磁弁の非通電時におい
ては、プランジャが該主弁体を閉弁方向に押圧すると共
にパイロット弁体が該主弁体のパイロット孔を閉止し、
該電磁弁の通電時においては該プランジャが該主弁体の
押圧を解除すると共に該パイロット弁体が該パイロット
孔を開口することにより該主弁体の背後に形成されてい
る高圧冷媒導入空間が低圧化して該主弁体が除動開弁す
る構成を採用した。In order to achieve the above object, in the first aspect of the invention, a refrigerant passage bent substantially in a right angle having valve seats at both ends between a primary port and a secondary port of a valve body. Expansion valve body that forms a valve, forms a pressure equalizing hole between the inner pressure chamber defined by the pressure responsive member and the secondary port, and connects a temperature sensitive tube to the outer pressure chamber, and moves in accordance with the operation of the pressure responsive member. To and from a valve seat formed on the secondary port side of the refrigerant passage, and a valve seat formed on the other side of the refrigerant passage ,
The valve body of the solenoid valve directly attached to the plunger is brought into contact with or separated from the solenoid valve, and the valve body is closed when the solenoid valve is not energized,
When the solenoid valve is energized, the valve body is configured to open. In the second invention, the valve body is bent at a substantially right angle with valve seats at both ends between the primary and secondary ports. And a temperature-sensing cylinder is connected to the outer pressure chamber and moves according to the operation of the pressure responsive member. The expansion valve body is brought into contact with or separated from a valve seat formed on the secondary port side of the refrigerant passage, and the main valve body of the solenoid valve is brought into contact with or separated from a valve seat formed on the other side of the refrigerant passage, When the valve is not energized, the plunger presses the main valve body in the valve closing direction and the pilot valve body closes the pilot hole of the main valve body,
When the solenoid valve is energized, the plunger releases the pressing of the main valve body and the pilot valve body opens the pilot hole, so that the high-pressure refrigerant introducing space formed behind the main valve body is formed. A structure is adopted in which the main valve body is depressurized and opened by lowering the pressure.
【０００６】[0006]
【作用】電磁機構により弁体を開弁駆動すると冷媒は冷
媒通路を流れ始めるが、この際に冷媒通路が略直角状に
曲折し、また膨張弁と電磁弁間の容積が小さくなってい
るので過渡流量を低下させる。When the valve mechanism is driven to open by the electromagnetic mechanism, the refrigerant begins to flow through the refrigerant passage. At this time, the refrigerant passage is bent at a substantially right angle, and the volume between the expansion valve and the electromagnetic valve is reduced. Reduce the transient flow rate.
【０００７】電磁弁の通電時にプランジャが主弁体の押
圧を解除すると共にパイロット弁が主弁体のパイロット
孔を開口した際において、主弁体の背後における高圧冷
媒導入空間に対する高圧冷媒の導入量よりもパイロット
孔からの流出量が多いので、高圧冷媒導入空間は低圧化
し、これに従って主弁体は比較的に緩やかに開弁動作す
る。The amount of high-pressure refrigerant introduced into the high-pressure refrigerant introduction space behind the main valve body when the plunger releases the pressure on the main valve body when the solenoid valve is energized and the pilot valve opens the pilot hole of the main valve body. Since the amount of outflow from the pilot hole is larger than that of the pilot hole, the pressure of the high-pressure refrigerant introduction space is reduced, and accordingly, the main valve body opens relatively slowly.
【０００８】[0008]
【実施例】図１はマルチ型空調器の冷凍サイクルを示
し、圧縮機Ａからの高圧冷媒は室外熱交換器Ｂからレシ
ーバＣに至り、第１膨張弁Ｖ1 及び第２膨張弁Ｖ2 を通
過した低圧冷媒は第１室内熱交換器Ｄ1 と第２室内熱交
換器Ｄ2 を通って圧縮機Ａに戻る。FIG. 1 shows a refrigerating cycle of a multi-type air conditioner, in which high-pressure refrigerant from a compressor A reaches a receiver C from an outdoor heat exchanger B, and a first expansion valve V 1 and a second expansion valve V 2 The passed low-pressure refrigerant returns to the compressor A through the first indoor heat exchanger D 1 and the second indoor heat exchanger D 2 .
【０００９】第１膨張弁Ｖ1 と第２膨張弁Ｖ2 にはそれ
ぞれ電磁弁Ｖが付設されている。膨張弁Ｖ1 ，Ｖ2 は、
膨張弁Ｖ2 において詳細に示される如くに、弁本体１の
一次口１ａと二次口１ｂ間において、一次口１ａから電
磁弁Ｖの弁室２に至る第１冷媒通路Ｐ1 と弁室２から二
次口１ｂに至る冷媒通路Ｐ2 が形成され、第２冷媒通路
Ｐ2 の両端部において弁座Ｓ1 ，Ｓ2 が形成されてい
る。An electromagnetic valve V is attached to each of the first expansion valve V 1 and the second expansion valve V 2 . The expansion valves V 1 and V 2 are
As shown in detail in the expansion valve V 2 , between the primary port 1 a and the secondary port 1 b of the valve body 1, the first refrigerant passage P 1 from the primary port 1 a to the valve chamber 2 of the solenoid valve V and the valve chamber 2 A coolant passage P 2 is formed from the secondary coolant passage 1b to the secondary port 1b, and valve seats S 1 and S 2 are formed at both ends of the second coolant passage P 2 .
【００１０】二次口１ｂ内において、弁本体１の雌螺子
部１ｃに螺着された調節ばね受け３と浮動ばね受け４間
に圧力設定コイルばね５が設けられ、該浮動ばね受け４
により支持される膨張弁体６が弁座Ｓ2 に接離する。弁
本体１には曲折した第２冷媒通路Ｐ2 の一部と直線状に
連続して摺動孔１ｄが形成され、該摺動孔１ｄから第２
冷媒通路Ｐ2 内にかけて作動杆７が摺動自在に設けられ
ていて、該作動杆７は一端において膨張弁体６に当接
し、他端において圧力応動部材としてのダイヤフラム８
に対する当金９に当接する。作動杆７の周囲にはテフロ
ン製のシールリング１０が設けられ、ばね受け１１との
間に設けられたコイルばね１２により尖鋭端部１０ａが
摺動孔１ｄの端部に圧接する。In the secondary port 1b, a pressure setting coil spring 5 is provided between the adjusting spring bearing 3 and the floating spring bearing 4 screwed to the female screw portion 1c of the valve body 1, and the floating spring bearing 4 is provided.
The expansion valve body 6 supported by moves toward and away from the valve seat S 2 . The valve body 1 sliding hole 1d is formed continuously to a portion a linear second refrigerant passage P 2 which is bent, first from sliding Doana 1d 2
An operating rod 7 is slidably provided in the refrigerant passage P 2 , the operating rod 7 abuts the expansion valve body 6 at one end, and a diaphragm 8 as a pressure responsive member at the other end.
Abut 9 against. A seal ring 10 made of Teflon is provided around the operating rod 7, and a sharp end 10a is pressed against the end of the slide hole 1d by a coil spring 12 provided between the seal ring 10 and the spring receiver 11.
【００１１】弁本体１の上端に固着される下蓋１３と上
蓋１４により前記ダイヤフラム８が周縁部を気密に挟持
して設けられ、ダイヤフラム８により内側圧力室Ｒ1 と
外側圧力室Ｒ2 が区画される。内側圧力室Ｒ1 には二次
口１ｂからの均圧孔１５が連通し、外側圧力室Ｒ2 に
は、室外熱交換器Ｄ1 ，Ｄ2 の出口側における過熱度を
感知するための感温筒Ｅに達するキャピラリチューブ１
６が接続される。The lower lid 13 and the upper lid 14 which are fixed to the upper end of the valve body 1 provide the diaphragm 8 with its peripheral portion hermetically sandwiched, and the diaphragm 8 divides the inner pressure chamber R 1 and the outer pressure chamber R 2 from each other. To be done. The pressure equalizing hole 15 from the secondary port 1b communicates with the inner pressure chamber R 1 , and the outer pressure chamber R 2 has a feeling for detecting the degree of superheat on the outlet side of the outdoor heat exchangers D 1 and D 2 . Capillary tube 1 reaching the warm tube E
6 is connected.
【００１２】電磁弁Ｖは一次口１ａの反対側に設けられ
て前記弁室２を形成する接続筒部１ｅに連結筒１７を溶
着すると共に、該連結筒１７に対してプランジャチュー
ブ１８を連結した弁本体筒１９をナット２０により固定
して設けられる。プランジャチューブ１８内において、
摺動筒体２１内に一体的に嵌合された主弁体２２とプラ
ンジャ２３が移動可能に設けられ、弁本体１との間に設
けられたコイルばね２４により弁座Ｓ1 から離れる方向
に付勢される主弁体２２を、プランジャ２３が吸引子２
５との間に設けられたコイルばね２６の付勢によりパイ
ロット弁体２７部分を介して押圧し、この際にコイルば
ね２６の弾力がコイルばね２４の弾力よりも強く設定さ
れているので、主弁体２２は弁座Ｓ1 に当接して閉弁し
ている。The solenoid valve V is provided on the opposite side of the primary port 1a, and the connecting cylinder 17 is welded to the connecting cylinder portion 1e forming the valve chamber 2, and the plunger tube 18 is connected to the connecting cylinder 17. The valve body cylinder 19 is fixedly provided by a nut 20. In the plunger tube 18,
A main valve body 22 and a plunger 23, which are integrally fitted in the sliding cylinder body 21, are movably provided, and a coil spring 24 provided between the main valve body 22 and the plunger 23 causes the main valve body 22 and the plunger 23 to move away from the valve seat S 1. The plunger 23 sucks the main valve element 22 which is biased by the suction element 2.
5 is pressed by the biasing force of the coil spring 26 provided between the coil spring 26 and the pilot valve body 27. At this time, the elastic force of the coil spring 26 is set to be stronger than the elastic force of the coil spring 24. The valve element 22 is in contact with the valve seat S 1 and is closed.
【００１３】主弁体２２の閉弁時において、パイロット
弁体２７は冷媒通路Ｐ1 と連通状態にある主弁体２２の
パイロット孔２２ａを閉止し、プランジャチューブ１８
と摺動筒体２１間の隙間から弁室２の高圧液冷媒が主弁
体２２の背後においてプランジャ２３との間に形成され
た高圧冷媒導入空間２８内に進入して充満している。な
お、２９はコイルボビン、３０はソレノイドコイルであ
る。When the main valve body 22 is closed, the pilot valve body 27 closes the pilot hole 22a of the main valve body 22 which is in communication with the refrigerant passage P 1, and the plunger tube 18 is closed.
The high-pressure liquid refrigerant in the valve chamber 2 enters into the high-pressure refrigerant introduction space 28 formed between the main valve body 22 and the plunger 23 through the gap between the sliding cylinder 21 and the sliding cylinder 21 and is filled therewith. In addition, 29 is a coil bobbin and 30 is a solenoid coil.
【００１４】上記構成において、冷凍サイクルの運転時
には電磁弁Ｖの通電によりプランジャ２１が吸引されて
主弁体２２が弁座Ｓ1 を離れているので、一次口１ａか
ら流入する高圧液冷媒は弁室２から第２冷媒通路Ｐ2 、
弁座Ｓ2 と膨張弁体６間を通り、低圧ガス冷媒となって
室内熱交換器Ｄ1 ，Ｄ2 に至る。In the above structure, during operation of the refrigeration cycle, the plunger 21 is attracted by the energization of the solenoid valve V and the main valve body 22 is separated from the valve seat S 1. Therefore, the high-pressure liquid refrigerant flowing from the primary port 1a is valved. From the chamber 2 to the second refrigerant passage P 2 ,
The low-pressure gas refrigerant passes between the valve seat S 2 and the expansion valve body 6 and reaches the indoor heat exchangers D 1 and D 2 .
【００１５】図１の場合においては、膨張弁Ｖ2 におけ
る第１冷媒通路Ｐ2 が電磁弁Ｖの主弁体２２より閉じら
れると共に、主弁体２２のパイロット孔２２ａをパイロ
ット弁体２７が閉止しているので、第２室内熱交換器Ｄ
2 は休止状態にあり、第２室内熱交換器Ｄ2 の出口温度
に見合った弁開度で膨張弁体６が弁座Ｓ2 から離れてい
る。[0015] In the case of Figure 1, the first refrigerant passage P 2 in the expansion valve V 2 is with closed from the main valve body 22 of the solenoid valve V, and the pilot hole 22a of the main valve body 22 the pilot valve body 27 is closed Therefore, the second indoor heat exchanger D
2 is in a rest state, and the expansion valve body 6 is separated from the valve seat S 2 at a valve opening degree corresponding to the outlet temperature of the second indoor heat exchanger D 2 .
【００１６】この状態から第２室内熱交換器Ｄ2 を使用
するには、電磁弁Ｖに通電してプランジャ２１を吸引す
ると共に、パイロット弁体２７によるパイロット孔２２
ａの閉止を解除する。パイロット孔２２ａの開放により
高圧冷媒導入空間２８内の高圧液冷媒はパイロット孔２
２ａを通って第２冷媒通路Ｐ2 に流出し、高圧冷媒導入
空間２８に対する高圧液冷媒の流入量よりもパイロット
孔２２ａからの流出量が多いので室２８は低圧化し、主
弁体２２は図面における右側へ移動して開弁する。そし
て、この開弁時における主弁体２２の移動は高圧冷媒導
入空間２８の低圧化に従って除々に行なわれるので、弁
室２からの高圧液冷媒が第２冷媒通路Ｐ 2 に向かって急
激に流れ込むのを抑制し、また第２冷媒通路Ｐ2 が略直
角状に曲折されると共に容積が小さいので、流速が抑制
される。From this state, the second indoor heat exchanger D2use
To do this, energize the solenoid valve V to attract the plunger 21.
And the pilot hole 22 by the pilot valve body 27
Release the closure of a. By opening the pilot hole 22a
The high-pressure liquid refrigerant in the high-pressure refrigerant introduction space 28 has pilot holes 2
2a through the second refrigerant passage P2Flow out to and introduce high pressure refrigerant
Pilot rather than inflow of high-pressure liquid refrigerant into space 28
Since the amount of outflow from the hole 22a is large, the pressure in the chamber 28 is reduced and
The valve body 22 moves to the right side in the drawing and opens. That
The movement of the main valve body 22 when the valve is opened is
Since it is performed gradually as the pressure in the inlet space 28 is lowered, the valve
The high-pressure liquid refrigerant from the chamber 2 is the second refrigerant passage P 2Sudden towards
Suppresses the sharp inflow, and the second refrigerant passage P2Is almost straightforward
Since it is bent into a square shape and the volume is small, the flow velocity is suppressed.
To be done.
【００１７】図１の実施例は、電磁弁Ｖの口径が膨張弁
Ｖ1 ，Ｖ2 の口径より大巾に大きくなっていて、比較的
に小さな電磁機構により大きな冷媒流量に対応すべくパ
イロット駆動方式を採用しているものであるが、図２の
実施例においては電磁弁Ｖ′の口径が膨張弁Ｖ1 ，Ｖ2
の口径よりわずかに大きくなっており、電磁弁の弁体２
２′がプランジャ２３に直付けされた直動方式となって
いる。In the embodiment shown in FIG. 1, the diameter of the solenoid valve V is much larger than the diameters of the expansion valves V 1 and V 2 , and the pilot drive is used to cope with a large refrigerant flow rate by a relatively small electromagnetic mechanism. although employing a method, the diameter expansion valve V 1 of the solenoid valve V 'in the embodiment of FIG. 2, V 2
The diameter of the solenoid valve is slightly larger than the diameter of
2'is a direct-acting system directly attached to the plunger 23.
【００１８】図２の電磁弁Ｖ′の開弁時においては、第
２冷媒通路Ｐ2 に流入する冷媒流は、もっぱら曲折した
小容積の該第２冷媒通路Ｐ2 の構成によって流速が緩和
される。以上本発明は通電開型の電磁弁について説明し
たが、電磁部の構成をかえて通電閉型の電磁弁でも実施
出来る。[0018] During opening of Figure 2 the solenoid valve V ', the refrigerant flow into the second refrigerant passage P 2, the flow rate is reduced solely by the second configuration of the refrigerant passage P 2 of meandering small volume It Although the present invention has been described with respect to the solenoid valve of the energized open type, it can be implemented with a solenoid valve of the energized closed type by changing the configuration of the electromagnetic portion.
【００１９】[0019]
【発明の効果】第１番目の発明においては、冷媒は略直
角状に曲折された容積の小さい冷媒通路により流速が抑
制され、騒音の発生を防止する。第２番目の発明におい
ては、上記に加えて、電磁弁の作動時における緩やかな
開弁動作により冷媒通路に対する高圧冷媒の急激な進入
が阻止されるので、更に、騒音の発生防止効果が得られ
る。According to the first aspect of the present invention, the flow velocity of the refrigerant is suppressed by the refrigerant passage bent in a substantially right angle and having a small volume, and noise is prevented from being generated. In the second aspect of the invention, in addition to the above, a sudden opening of the high-pressure refrigerant into the refrigerant passage is prevented by the gradual valve opening operation at the time of operation of the solenoid valve, so that the effect of preventing noise is further obtained. .
【図１】本発明の一実施例について、電磁弁付膨張弁を
破断して示した冷凍サイクルの説明図である。FIG. 1 is an explanatory view of a refrigerating cycle in which an expansion valve with a solenoid valve is shown in a broken manner in an embodiment of the present invention.
【図２】本発明の他の実施例について、電磁弁付膨張弁
を破断して示した冷凍サイクルの説明図である。FIG. 2 is an explanatory view of a refrigeration cycle in which an expansion valve with a solenoid valve is shown broken to show another embodiment of the present invention.
Ｖ1 ，Ｖ2 膨張弁 Ｖ，Ｖ′ 電磁弁 Ｅ 感温筒 Ｐ2 冷媒通路 Ｒ1 内側圧力室 Ｒ2 外側圧力室 Ｓ1 ，Ｓ2 弁座 １ 弁本体 １ａ 一次口 １ｂ 二次口 ６ 膨張弁体 ８ 圧力応動部材 １５ 均圧孔 ２２，２２′ 弁体 ２２ａ パイロット孔 ２３ プランジャ ２７ パイロット弁体 ２８ 高圧冷媒導入空間V 1, V 2 expansion valve V, V 'solenoid valve E temperature sensing tube P 2 refrigerant passage R 1 inner pressure chamber R 2 outer pressure chamber S 1, S 2 valve seat 1 valve body 1a primary port 1b secondary port 6 expansion Valve body 8 Pressure response member 15 Pressure equalizing holes 22, 22 'Valve body 22a Pilot hole 23 Plunger 27 Pilot valve body 28 High pressure refrigerant introduction space
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−41481（ＪＰ，Ａ) 特開 平７−151422（ＪＰ，Ａ) 特開 昭61−84484（ＪＰ，Ａ) 特開 平５−71659（ＪＰ，Ａ) 実開 昭61−76271（ＪＰ，Ｕ) 実開 昭64−46586（ＪＰ，Ｕ) 実開 昭57−12579（ＪＰ，Ｕ) 実開 昭55−112158（ＪＰ，Ｕ) 実開 昭58−14565（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16K 31/06 - 31/42 F25B 41/06 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 62-41481 (JP, A) JP 7-151422 (JP, A) JP 61-84484 (JP, A) JP 5- 71659 (JP, A) Actually opened 61-76271 (JP, U) Actually opened 64-64586 (JP, U) Actually opened 57-12579 (JP, U) Actually opened 55-112158 (JP, U) 58-14565 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) F16K 31/06-31/42 F25B 41/06
Claims (2)
に弁座を有する略直角状に曲折した冷媒通路を形成し、
圧力応動部材によって区画される内側圧力室と該二次口
間に均圧孔を設けると共に外側圧力室に感温筒を接続
し、該圧力応動部材の動作に従って移動する膨張弁体を
該冷媒通路の該二次口側に形成された弁座に接離させ、
該冷媒通路の他側に形成された弁座に、プランジャに直
付けされた電磁弁の弁体を接離させ、該電磁弁の非通電
時においては該弁体が閉弁すると共に、該電磁弁の通電
時においては該弁体が開弁することを特徴とする電磁弁
付膨張弁。Claim: What is claimed is: 1. A refrigerant passage bent at a substantially right angle having valve seats at both ends is formed between a primary opening and a secondary opening of a valve body,
A pressure equalizing hole is provided between the inner pressure chamber defined by the pressure responsive member and the secondary port, and a temperature sensitive tube is connected to the outer pressure chamber, and an expansion valve body that moves according to the operation of the pressure responsive member is provided in the refrigerant passage. Of the valve seat formed on the secondary opening side of the
The valve seat formed on the other side of the refrigerant passage is connected directly to the plunger.
Characterized in that the valve body of the attached solenoid valve is brought into contact with and separated from the valve body, and the valve body is closed when the solenoid valve is not energized, and the valve body is opened when the solenoid valve is energized. Expansion valve with solenoid valve.
に弁座を有する冷媒通路を形成し、圧力応動部材によっ
て区画される内側圧力室と該二次口間に均圧孔を設ける
と共に外側圧力室に感温筒を接続し、該圧力応動部材の
動作に従って移動する膨張弁体を該冷媒通路の該二次口
側に形成された弁座に接離させ、該冷媒通路の他側に形
成された弁座に電磁弁の主弁体を接離させ、該電磁弁の
非通電時においては、プランジャが該主弁体を閉弁方向
に押圧すると共にパイロット弁体が該主弁体のパイロッ
ト孔を閉止し、該電磁弁の通電時においては該プランジ
ャが該主弁体の押圧を解除すると共に該パイロット弁体
が該パイロット孔を開口することにより該主弁体の背後
に形成されている高圧冷媒導入空間が低圧化して該主弁
体が開弁することを特徴とする電磁弁付膨張弁。2. A refrigerant passage having valve seats at both ends is formed between a primary opening and a secondary opening of a valve body, and a pressure equalizing hole is provided between an inner pressure chamber defined by a pressure responsive member and the secondary opening. A temperature-sensing cylinder is connected to the outer pressure chamber, and an expansion valve body that moves according to the operation of the pressure responsive member is brought into contact with or separated from a valve seat formed on the secondary port side of the refrigerant passage. The main valve body of the solenoid valve is brought into and out of contact with the valve seat formed on the side, and when the solenoid valve is not energized, the plunger presses the main valve body in the valve closing direction and the pilot valve body causes the main valve body to move. Formed behind the main valve body by closing the pilot hole of the body, and when the solenoid valve is energized, the plunger releases the pressing of the main valve body and the pilot valve body opens the pilot hole. The high pressure refrigerant introduction space is being operated at a low pressure and the main valve body is opened. A characteristic expansion valve with solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29989093A JP3387586B2 (en) | 1993-11-30 | 1993-11-30 | Expansion valve with solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29989093A JP3387586B2 (en) | 1993-11-30 | 1993-11-30 | Expansion valve with solenoid valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07151259A JPH07151259A (en) | 1995-06-13 |
| JP3387586B2 true JP3387586B2 (en) | 2003-03-17 |
Family
ID=17878178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29989093A Expired - Fee Related JP3387586B2 (en) | 1993-11-30 | 1993-11-30 | Expansion valve with solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3387586B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5292540B2 (en) * | 2008-08-22 | 2013-09-18 | 株式会社テージーケー | Expansion device |
| JP6085763B2 (en) * | 2013-02-07 | 2017-03-01 | 株式会社テージーケー | solenoid valve |
-
1993
- 1993-11-30 JP JP29989093A patent/JP3387586B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07151259A (en) | 1995-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3397862B2 (en) | Expansion valve with solenoid valve | |
| US5070707A (en) | Shockless system and hot gas valve for refrigeration and air conditioning | |
| US4267702A (en) | Refrigeration system with refrigerant flow controlling valve | |
| EP2573438A1 (en) | Pilot operated solenoid valve | |
| US6315266B1 (en) | Pilot-operated flow regulating valve | |
| US4535805A (en) | Pilot operated valve with pressure relief | |
| JP3145233B2 (en) | Two-way solenoid valve | |
| CN111854240B (en) | Refrigeration cycle system | |
| JP2971745B2 (en) | solenoid valve | |
| JP3387586B2 (en) | Expansion valve with solenoid valve | |
| JP3362990B2 (en) | Expansion valve with solenoid valve | |
| JPS58221078A (en) | Pressure operated valve | |
| JP2966597B2 (en) | Two-way solenoid valve | |
| JPH04227443A (en) | Fluit flow measuring device | |
| US11739956B2 (en) | Air conditioning apparatus | |
| JPH0914797A (en) | Solenoid valve integral type expansion valve | |
| JP2001324246A (en) | Expansion valve and freezing cycle using it | |
| JP3442949B2 (en) | Refrigeration cycle using variable capacity compressor | |
| JPS63293373A (en) | Two stage operating type solenoid valve | |
| JP3207489B2 (en) | Constant pressure expansion valve | |
| JPS59106771A (en) | High pressure valve | |
| JP2000130889A (en) | Valve fixing structure for refrigerating cycle with bypath | |
| JP4446628B2 (en) | Bypass valve and air conditioner using the same | |
| JPH04190060A (en) | Expansion valve for air-conditioner | |
| JPS5852958A (en) | Refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20021203 |
|
| LAPS | Cancellation because of no payment of annual fees |