JPH04316778A - Solenoid valve device - Google Patents
Solenoid valve deviceInfo
- Publication number
- JPH04316778A JPH04316778A JP6441391A JP6441391A JPH04316778A JP H04316778 A JPH04316778 A JP H04316778A JP 6441391 A JP6441391 A JP 6441391A JP 6441391 A JP6441391 A JP 6441391A JP H04316778 A JPH04316778 A JP H04316778A
- Authority
- JP
- Japan
- Prior art keywords
- solenoid valve
- passage
- main valve
- valve
- valve body
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims abstract description 29
- 239000003507 refrigerant Substances 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】この発明は、多室形空気調和機の
冷媒回路などに用いられる流体制御用の電磁弁装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid valve device for fluid control used in a refrigerant circuit of a multi-room air conditioner.
【0002】0002
【従来の技術】図3は従来多室形空気調和機の冷媒回路
に使用されている電磁弁装置を示す断面図であり、図に
おいて、1は筒状に形成された装置本体、2は装置本体
1の内壁に形成された主弁座、3は装置本体1の内壁に
沿って摺動可能に設けられ、主弁座2と接離して流体通
路を開閉する主弁体、4は主弁体3を主弁座2に押し付
けるスプリング、5は主弁体3を収納する弁室で、主弁
体3により、上部弁室6と下部弁室7に分けられる。下
部弁室7の側面には流入管8が取付けられ、入口側流通
路9を形成する。また、装置本体1の下端には流出管1
0が取付けられ、下部弁室7の下方に設けられた空間と
共に出口側流通路11を形成する。12は装置本体1の
上部に取付けられた電磁弁で連通管13及び連通口14
を介して上部弁室6を出口側流通路11に連通するよう
に構成されている。2. Description of the Related Art FIG. 3 is a sectional view showing a solenoid valve device conventionally used in a refrigerant circuit of a multi-room air conditioner. A main valve seat formed on the inner wall of the main body 1; 3 a main valve body that is slidably provided along the inner wall of the device main body 1 and opens and closes a fluid passage by coming into contact with and separating from the main valve seat 2; 4 a main valve; A spring 5 that presses the body 3 against the main valve seat 2 is a valve chamber that houses the main valve body 3, and is divided into an upper valve chamber 6 and a lower valve chamber 7 by the main valve body 3. An inflow pipe 8 is attached to the side surface of the lower valve chamber 7, forming an inlet side flow passage 9. In addition, an outflow pipe 1 is provided at the lower end of the device main body 1.
0 is attached, and forms an outlet side flow passage 11 together with a space provided below the lower valve chamber 7. Reference numeral 12 denotes a solenoid valve attached to the upper part of the device body 1, which connects a communication pipe 13 and a communication port 14.
The upper valve chamber 6 is configured to communicate with the outlet side flow passage 11 via the upper valve chamber 6.
【0003】次に動作について説明する。まず、電磁弁
12が閉じた状態では、主弁体3はスプリング4の力と
上部弁室6の流体圧力によって主弁座2に押しつけられ
、入口側流通路9と出口側流通路11は遮断されている
。電磁弁12に通電して弁を開放すると、上部弁室6の
流体は流通口14から連通管13を通って出口側通路1
1に流れることになり、このため、上部弁室6内の流体
圧力は減少し、流入管8を介して下部弁室7に供給され
る流体圧力によって主弁体3が押し上げられ、流体は入
口側流通路9から下部弁室7を通って出口側流通路11
へと流れることになる。次に、再び電磁弁12を閉じる
と、流体は主弁体3と装置本体1の壁の間隙を通って、
徐々に下部弁室7から上部弁室6へ流入し、上部弁室6
の流体圧力が増加する。このため、主弁体3が下方に押
圧されることになり、再び主弁体3が主弁座2に当接さ
れ、入口側流通路9と出口側流通路11の間を遮断する
ことになる。Next, the operation will be explained. First, when the solenoid valve 12 is closed, the main valve body 3 is pressed against the main valve seat 2 by the force of the spring 4 and the fluid pressure in the upper valve chamber 6, and the inlet side flow passage 9 and the outlet side flow passage 11 are blocked. has been done. When the electromagnetic valve 12 is energized to open the valve, the fluid in the upper valve chamber 6 passes through the communication pipe 13 from the communication port 14 to the outlet side passage 1.
Therefore, the fluid pressure in the upper valve chamber 6 decreases, and the main valve body 3 is pushed up by the fluid pressure supplied to the lower valve chamber 7 via the inflow pipe 8, and the fluid flows to the inlet. From the side flow passage 9 through the lower valve chamber 7 to the outlet side flow passage 11
It will flow to. Next, when the solenoid valve 12 is closed again, the fluid passes through the gap between the main valve body 3 and the wall of the device body 1.
It gradually flows from the lower valve chamber 7 to the upper valve chamber 6, and the upper valve chamber 6
fluid pressure increases. Therefore, the main valve body 3 is pressed downward, and the main valve body 3 comes into contact with the main valve seat 2 again, blocking the inlet side flow passage 9 and the outlet side flow passage 11. Become.
【0004】0004
【発明が解決しようとする課題】このように従来の電磁
弁装置においては、電磁弁12を開くと、主弁体3が主
弁座2から開放され、流体は入口側流通路9から出口側
流通路11へ流れるが、入口側と出口側の流体の圧力差
が大きい弁開放時には、大量の流体が急激に減圧されて
流出することになり、このため、大きな通過音を発生す
るという問題点があった。この発明は、このような問題
を解決するためになされたもので、入口側流通路9と出
口側流通路11の間の流体圧力差を制御することにより
、流体が装置本体1を通過する際に発生する通過音を抑
制しようとするものである。As described above, in the conventional solenoid valve device, when the solenoid valve 12 is opened, the main valve body 3 is released from the main valve seat 2, and the fluid is transferred from the inlet side flow passage 9 to the outlet side. When the valve is opened to flow into the flow passage 11, but there is a large pressure difference between the fluid on the inlet side and the outlet side, a large amount of fluid is suddenly depressurized and flows out, which causes a problem in that a large passing noise is generated. was there. This invention was made to solve such problems, and by controlling the fluid pressure difference between the inlet side flow passage 9 and the outlet side flow passage 11, when the fluid passes through the device main body 1, This is an attempt to suppress the passing noise generated in the
【0005】[0005]
【課題を解決するための手段】この発明に係わる電磁弁
装置は、入口側流通路と出口側流通路をつなぐ連通路を
設けるとともに、この連通路に圧力制御用の電磁弁を設
けるように構成したものである。[Means for Solving the Problems] A solenoid valve device according to the present invention is configured such that a communication passage connecting an inlet side flow passage and an outlet side flow passage is provided, and a solenoid valve for pressure control is provided in this communication passage. This is what I did.
【0006】[0006]
【作用】この発明による電磁弁装置は、入口側流通路と
出口側流通路の間の流体圧力差が大きい場合に圧力制御
用電磁弁を開き、下部弁室の流体を連通路を通して出口
側流通路に流出させ、入口側流通路と出口側流通路の流
体圧力差が小さくなった後、主弁体を開放して流体を通
過するようにする。[Operation] The solenoid valve device according to the present invention opens the pressure control solenoid valve when the fluid pressure difference between the inlet side flow path and the outlet side flow path is large, and allows the fluid in the lower valve chamber to flow through the communication path to the outlet side. After the fluid flows out into the flow path and the fluid pressure difference between the inlet side flow path and the outlet side flow path becomes small, the main valve body is opened to allow the fluid to pass through.
【0007】[0007]
【実施例】以下、本発明を一実施例である図1および図
2に従って説明する。図1は本発明による電磁弁装置1
00 を示す断面図で、図において、20は装置本体1
に形成された連通路で、主弁体3による通路をバイパス
するように下部弁室7を出口側流通路11に連通させて
いる。21はこの連通路20を開閉するように設けられ
た制御用電磁弁で、弁体22および電磁コイル23など
から構成されている。なお、その他の構成は、図3に示
す従来例とほぼ同一である。図2は図1に示すような電
磁弁装置100 を多室形空気調和機の冷媒回路に使用
した例である。この冷媒回路は、冷媒を圧縮する圧縮機
30、冷媒の流れを切り換える四方弁31、室外側熱交
換器32、逆止弁33、気液分離器34、膨張弁35、
室内側熱交換器36、本発明による電磁弁装置100a
,100bなどから構成されている。なお、Aは室外ユ
ニットを示し、B1,B2,B3は複数の室内ユニット
を示している。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. 1 and 2, which are one embodiment. FIG. 1 shows a solenoid valve device 1 according to the present invention.
00. In the figure, 20 is the device main body 1.
The lower valve chamber 7 is communicated with the outlet side flow passage 11 through a communication passage formed in the lower valve chamber 7 so as to bypass the passage formed by the main valve body 3. Reference numeral 21 denotes a control electromagnetic valve provided to open and close this communication passage 20, and is composed of a valve body 22, an electromagnetic coil 23, and the like. Note that the other configurations are almost the same as the conventional example shown in FIG. FIG. 2 shows an example in which the solenoid valve device 100 shown in FIG. 1 is used in a refrigerant circuit of a multi-room air conditioner. This refrigerant circuit includes a compressor 30 that compresses refrigerant, a four-way valve 31 that switches the flow of refrigerant, an outdoor heat exchanger 32, a check valve 33, a gas-liquid separator 34, an expansion valve 35,
Indoor heat exchanger 36, solenoid valve device 100a according to the present invention
, 100b, etc. Note that A indicates an outdoor unit, and B1, B2, and B3 indicate a plurality of indoor units.
【0008】この空気調和機は暖房と冷房の両方の運転
を行うが、両者はほぼ同様なので、暖房時の運転につい
て説明する。圧縮機30より吐出された高温高圧冷媒は
四方弁31、逆止弁33、気液分離器34、電磁弁装置
100bを介して室内ユニットB1に流入し、室内側熱
交換器36で室内空気と熱交換して凝縮液化される。そ
して、この液体状態となった冷媒は、膨張弁35を通っ
て減圧され、逆止弁33を通して、室外側熱交換器32
に供給される。この熱交換器32で熱交換されてガス状
態となった冷媒は、再び圧縮機30に供給され、以後循
環サイクルを繰返すことになる。[0008] This air conditioner performs both heating and cooling operations, and since they are almost the same, the operation during heating will be explained. The high-temperature, high-pressure refrigerant discharged from the compressor 30 flows into the indoor unit B1 via the four-way valve 31, check valve 33, gas-liquid separator 34, and electromagnetic valve device 100b, and is exchanged with indoor air at the indoor heat exchanger 36. It is condensed and liquefied through heat exchange. The refrigerant in a liquid state is then depressurized through the expansion valve 35 and passed through the check valve 33 to the outdoor heat exchanger 32.
is supplied to The refrigerant that has been heat exchanged in the heat exchanger 32 and turned into a gaseous state is supplied to the compressor 30 again, and the circulation cycle is repeated thereafter.
【0009】このような冷媒回路において、稼動状態に
ある室内ユニットB1〜B3の内の1台を一時停止する
場合、一時停止する室内ユニットへの冷媒を制御する電
磁弁装置100bを閉じて、高温高圧冷媒の供給を止め
ることになるが、このとき、一時停止した室内ユニット
に充満していたガスは、室内の温度により冷却されて液
化し、圧力が低下する。一方、圧縮機30は、室内ユニ
ットB1〜B3のうち一台でも稼動していれば作動する
ので、接続配管内の冷媒ガスは高圧状態を保持している
。
したがって、一時停止した室内ユニットに冷媒を供給す
る電磁弁装置100bの流入側と流出側には大きな圧力
差が生じることになる。また、暖房運転から冷房運転に
切り換える時、電磁弁装置100bを閉じ、電磁弁装置
100aを開くが、このときにも、電磁弁装置100a
の流入側と流出側には大きな圧力差が生じることになる
。しかしながら、本願発明の電磁弁装置においては、主
弁体3を主弁座2から開放するに先立ってまず、圧力制
御用電磁弁21の電磁コイル23に通電して弁体22を
移動させ、連通路20を開放する。このため、高圧冷媒
は、入口側流通路9から下部弁室7、および連通路20
を通して出口側流通路11に流出することになる。この
とき、連通路20または弁通路を細く形成することによ
って大量の冷媒を急激に通過させることがなく、したが
って、大きな通過音は発生しない。このように暫くの間
、冷媒を圧力制御用電磁弁21中を通過させるようにし
、入口側の流体圧力と出口側の流体圧力の差を小さくし
て然る後、電磁弁12を駆動して主弁体3と主弁座2と
を切離し、この間に流体を通過させることになる。この
時流体の圧力差は小さくなっているため大きな通過音は
発生しない。In such a refrigerant circuit, when one of the indoor units B1 to B3 in operation is temporarily stopped, the solenoid valve device 100b that controls refrigerant to the indoor unit to be temporarily stopped is closed, and the high-temperature The supply of high-pressure refrigerant is stopped, but at this time, the gas that filled the temporarily stopped indoor unit is cooled by the indoor temperature and liquefies, resulting in a decrease in pressure. On the other hand, since the compressor 30 operates if even one of the indoor units B1 to B3 is operating, the refrigerant gas in the connecting pipe maintains a high pressure state. Therefore, a large pressure difference occurs between the inflow side and the outflow side of the solenoid valve device 100b that supplies refrigerant to the temporarily stopped indoor unit. Further, when switching from heating operation to cooling operation, the solenoid valve device 100b is closed and the solenoid valve device 100a is opened.
A large pressure difference will occur between the inflow and outflow sides. However, in the solenoid valve device of the present invention, before the main valve body 3 is released from the main valve seat 2, first, the electromagnetic coil 23 of the pressure control solenoid valve 21 is energized to move the valve body 22, and the valve body 22 is moved. Passage 20 is opened. Therefore, the high-pressure refrigerant flows from the inlet side flow passage 9 to the lower valve chamber 7 and the communication passage 20.
It flows out to the outlet side flow passage 11 through the passage. At this time, by forming the communication passage 20 or the valve passage to be narrow, a large amount of refrigerant does not pass through suddenly, and therefore no large passing noise is generated. In this way, the refrigerant is allowed to pass through the pressure control solenoid valve 21 for a while to reduce the difference between the fluid pressure on the inlet side and the fluid pressure on the outlet side, and then the solenoid valve 12 is driven. The main valve body 3 and the main valve seat 2 are separated, and fluid is allowed to pass between them. At this time, the pressure difference between the fluids is small, so no large passing noise is generated.
【0010】0010
【発明の効果】以上のように、本発明によれば、装置本
体に主弁体による通路をバイパスする連通路を設けると
ともに、この連通路に圧力制御用電磁弁を設けるように
したために、入口側と出口側に大きな圧力差がある場合
にも、流体通過音の発生を抑制することができる。As described above, according to the present invention, since the device main body is provided with a communication passage that bypasses the passage through the main valve body, and a pressure control solenoid valve is provided in this communication passage, the inlet Even when there is a large pressure difference between the side and the outlet side, the generation of fluid passage noise can be suppressed.
【図1】この発明による電磁弁装置の一実施例を示す断
面図である。FIG. 1 is a sectional view showing an embodiment of a solenoid valve device according to the present invention.
【図2】この発明による電磁弁装置を使用した多室形空
気調和機の冷媒回路の一例を示す図である。FIG. 2 is a diagram showing an example of a refrigerant circuit of a multi-room air conditioner using the solenoid valve device according to the present invention.
【図3】従来の電磁弁装置の構造を示す断面図である。FIG. 3 is a sectional view showing the structure of a conventional solenoid valve device.
1 装置本体 2 主弁座 3 主弁体 5 弁室 6 上部弁室 7 下部弁室 9 入口側流通路 11 出口側流通路 12 電磁弁 13 流通管 20 連通路 21 圧力制御用電磁弁 22 弁体 23 電磁コイル 1 Device body 2 Main valve seat 3 Main valve body 5 Valve chamber 6 Upper valve chamber 7 Lower valve chamber 9 Inlet side flow passage 11 Outlet side flow path 12 Solenoid valve 13 Flow pipe 20 Communication path 21 Solenoid valve for pressure control 22 Valve body 23 Electromagnetic coil
Claims (1)
置本体の内壁に沿って摺動可能に形成された主弁体と、
この主弁体によって区画された上部弁室内の圧力を制御
し、上記主弁体を摺動させて、上記主弁体を介する通路
により流体を流通させる電磁弁と、上記主弁体をバイパ
スして入口側流体通路と出口側流体通路とを連通させる
連通路と、この連通路に設けられ、上記主弁体の入口側
流体圧力を制御する圧力制御用電磁弁とを備えた電磁弁
装置。1. A device body formed into a cylindrical shape, a main valve body formed to be slidable along an inner wall of the device body,
A solenoid valve that controls the pressure in the upper valve chamber divided by the main valve body, slides the main valve body, and allows fluid to flow through a passage through the main valve body, and a solenoid valve that bypasses the main valve body. An electromagnetic valve device comprising: a communication passage that communicates an inlet-side fluid passage with an outlet-side fluid passage; and a pressure control solenoid valve provided in the communication passage to control fluid pressure on the inlet side of the main valve body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6441391A JPH04316778A (en) | 1991-03-28 | 1991-03-28 | Solenoid valve device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6441391A JPH04316778A (en) | 1991-03-28 | 1991-03-28 | Solenoid valve device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04316778A true JPH04316778A (en) | 1992-11-09 |
Family
ID=13257586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6441391A Pending JPH04316778A (en) | 1991-03-28 | 1991-03-28 | Solenoid valve device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04316778A (en) |
-
1991
- 1991-03-28 JP JP6441391A patent/JPH04316778A/en active Pending
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