JP3256270B2 - Reversible valve - Google Patents
Reversible valveInfo
- Publication number
- JP3256270B2 JP3256270B2 JP10657992A JP10657992A JP3256270B2 JP 3256270 B2 JP3256270 B2 JP 3256270B2 JP 10657992 A JP10657992 A JP 10657992A JP 10657992 A JP10657992 A JP 10657992A JP 3256270 B2 JP3256270 B2 JP 3256270B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pilot
- reversible
- valve body
- chambers
- 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
- Fluid-Driven Valves (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、空調機器用のマルチタ
イプのヒートポンプに用いられる可逆弁に関し、特にマ
ルチエアコンの片室の冷房及び暖房時における室内機へ
の冷媒の循環を制御するための可逆弁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reversible valve used in a multi-type heat pump for an air conditioner, and more particularly to a reversible valve for controlling the circulation of refrigerant to an indoor unit during cooling and heating of a single room of a multi air conditioner. It relates to a reversible valve.
【０００２】[0002]
【従来技術】従来の可逆弁には、フロートを二つ使用し
たもの、高圧、低圧の取り出し口が必要なもの及び冷媒
の流れの正逆方向で電気モードが逆転するものなどがあ
った。しかしながら、フロートを二つ使用したものにお
いては、複雑で高価なものとなってしまうと共に、圧力
損失が大きくなってしまい流量が減少してしまうという
欠点があった。高圧、低圧の取り出し口が必要な可逆弁
においては、高圧または低圧を利用して作動するため、
弁体内の圧力が常に低圧または高圧になるという使い勝
手の制約があった。また、電気モードが冷媒の流れの正
方向、逆方向で逆転するもの、例えば、正方向は通電時
「開」非通電時「閉」、逆方向は通電時「閉」非通電時
「開」となるような可逆弁においては、冷媒の流れを止
めることができず、また、電気モードが逆転するために
使い勝手が良くないなどの欠点があった。2. Description of the Related Art Conventional reversible valves include those using two floats, those requiring a high-pressure and low-pressure outlet, and those reversing the electric mode in the forward and reverse directions of the flow of the refrigerant. However, the use of two floats is disadvantageous in that it becomes complicated and expensive, and that the pressure loss increases and the flow rate decreases. For reversible valves that require high-pressure, low-pressure outlets, they operate using high or low pressure,
There is a restriction on usability that the pressure in the valve body is always low or high. Further, the electric mode is reversed in the forward and reverse directions of the flow of the refrigerant, for example, the forward direction is “open” when energized, “closed” when not energized, and the reverse direction is “closed” when energized and “open” when not energized. In such a reversible valve, there is a drawback that the flow of the refrigerant cannot be stopped, and the electric mode is reversed so that the usability is not good.
【０００３】図２は、従来技術による可逆弁の一例を示
す図であり、この図を用いて従来技術の欠点につき説明
する。FIG. 2 is a diagram showing an example of a reversible valve according to the prior art, and the drawbacks of the prior art will be described with reference to FIG.
【０００４】図２に例示した従来技術による可逆弁は、
冷媒回路の流路に設けられる弁本体１と該弁本体の切換
を制御するパイロットバルブ６及びパイロットバルブ６
と弁本体１または外部の圧縮機とを流体連結するための
パイロット管５ａ，５ｂ，５ｃ，５ｄからなっている。[0004] The reversible valve according to the prior art illustrated in FIG.
A valve body 1 provided in a flow path of a refrigerant circuit, a pilot valve 6 for controlling switching of the valve body, and a pilot valve 6
And pilot pipes 5a, 5b, 5c, 5d for fluid connection between the valve body 1 and an external compressor.
【０００５】パイロットバルブ６には、圧縮機の吐出口
に連通する高圧側パイロット管５ｄと、圧縮機の吸込口
に連通する低圧側パイロット管５ｃ及び、弁本体の両側
の室に連通するパイロット管５ａ，５ｂが設けられ、ま
た弁本体１内には、弁本体内を３つの室（Ａ，Ｂ，Ｃ）
に分けるピストンアッセンブリ４が設けられ、該３つの
室のうちの中央の室（Ａ）内には、導通口１ａ，１ｂを
設けられた弁座２と該弁座と協働して導通口１ａ，１ｂ
を開閉する弁体３が設けられており、該弁体３は連結棒
３ａによりピストンアッセンブリ４と連動して弁座２に
対し摺動可能とされている。The pilot valve 6 has a high-pressure pilot pipe 5d communicating with a discharge port of the compressor, a low-pressure pilot pipe 5c communicating with a suction port of the compressor, and a pilot pipe communicating with chambers on both sides of the valve body. 5a, 5b are provided, and three chambers (A, B, C) are formed in the valve main body 1 in the valve main body.
A piston assembly 4 is provided, and a central chamber (A) of the three chambers has a valve seat 2 provided with communication ports 1a and 1b and a communication port 1a cooperating with the valve seat. , 1b
Is provided, and the valve body 3 is slidable with respect to the valve seat 2 in conjunction with the piston assembly 4 by a connecting rod 3a.
【０００６】弁本体１の両側の室（Ｂ，Ｃ）は、パイロ
ット管５ａ，５ｂによりパイロットバルブ６のパイロッ
ト弁座６ａの両側に連通され、パイロットバルブ６のパ
イロット弁座６ａの中央部は、パイロット管５ｃにより
圧縮機の吸込口に連通されている。また、パイロットバ
ルブ６の一端にはソレノイドコイル７が設けられ、パイ
ロットバルブ６の内部にはパイロット管５ａ，５ｂ，５
ｃの流路を切換えるパイロット弁体９に連結された可動
鉄心８が設けられている。The chambers (B, C) on both sides of the valve body 1 are connected to both sides of a pilot valve seat 6a of a pilot valve 6 by pilot pipes 5a, 5b. The pilot pipe 5c communicates with the suction port of the compressor. A solenoid coil 7 is provided at one end of the pilot valve 6, and pilot pipes 5 a, 5 b, 5
A movable iron core 8 connected to a pilot valve body 9 for switching the flow path of c is provided.
【０００７】図において、ソレノイドコイル７が通電さ
れていない状態では、パイロット管５ｄを介して供給さ
れた高圧流体は、パイロット弁体９によりパイロット管
５ｂを介して弁本体１の右側の室（Ｂ）に供給され、一
方弁本体の左側の室（Ｃ）の流体はパイロット管５ａ及
び５ｃを経由して吐出され低圧となり、ピストンアッセ
ンブリ４を左方向に移動する。これに伴い、弁本体の中
央の室（Ａ）内の弁体３も左方向に移動して、導通口１
ａ，１ｂを連通させる。In the figure, when the solenoid coil 7 is not energized, the high pressure fluid supplied through the pilot pipe 5d is supplied to the right chamber (B) of the valve body 1 by the pilot valve element 9 through the pilot pipe 5b. ), The fluid in the chamber (C) on the left side of the one-way valve body is discharged through the pilot pipes 5a and 5c to a low pressure, and moves the piston assembly 4 to the left. Along with this, the valve body 3 in the center chamber (A) of the valve body also moves to the left, and the conduction port 1
a and 1b are communicated.
【０００８】同様にして、ソレノイドコイル７に通電す
ると、パイロット管５ｄを介して供給された高圧流体
は、パイロット弁体９によりパイロット管５ａを介して
弁本体１の左側の室（Ｃ）に供給され、一方弁本体の右
側の室（Ｂ）の流体はパイロット管５ｂ及び５ｃを経由
して吐出され低圧となり、ピストンアッセンブリ４を右
方向に移動する。これに伴い、弁本体の中央の室（Ａ）
内の弁体３も右方向に移動して、導通口１ａ，１ｂを閉
じる。Similarly, when the solenoid coil 7 is energized, the high-pressure fluid supplied via the pilot pipe 5d is supplied to the left chamber (C) of the valve body 1 via the pilot pipe 5a by the pilot valve element 9. The fluid in the chamber (B) on the right side of the valve body is discharged through the pilot pipes 5b and 5c to a low pressure, and moves the piston assembly 4 to the right. Along with this, the central chamber (A) of the valve body
The inner valve element 3 also moves rightward, closing the conduction ports 1a and 1b.
【０００９】[0009]
【発明が解決しようとする問題点】図２に例示したよう
な従来技術による可逆弁においては、弁本体の中央の室
内の圧力、即ち導通口の圧力が、低圧の場合には良い
が、高圧になると、ピストンアッセンブリのシールを破
って低圧側へと流体が流れてしまうという問題があっ
た。In the reversible valve according to the prior art as illustrated in FIG. 2, the pressure in the chamber in the center of the valve body, that is, the pressure in the communication port is good when the pressure is low. Then, there is a problem that the seal of the piston assembly is broken and the fluid flows to the low pressure side.
【００１０】本発明は、このような点に鑑みてなされた
ものであり、従って、本発明の目的は、弁本体内の圧力
分布に影響されることなく、弁本体内の各室間を密封し
て分けることができ、これにより、様々な圧力の流通に
適用できる可逆弁を提供することである。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to seal each chamber in a valve body without being affected by the pressure distribution in the valve body. It is an object of the present invention to provide a reversible valve applicable to various pressures.
【００１１】[0011]
【問題点を解決するための手段】上記目的を達成するた
めに本発明の可逆弁は以下のような構成を有する。弁本
体と、該弁本体の切換を制御するパイロットバルブと、
該パイロットバルブと該弁本体または外部の圧縮機とを
流体連結するためのパイロット管とからなる可逆弁で、
該弁本体内が、ピストンアッセンブリにより３室に分け
られ、該３室のうちの両端の室がパイロットバルブに連
結され、該３室のうちの中央の室に設けられた導通口が
パイロットバルブによってピストンアッセンブリが動か
されることによって開閉される可逆弁において、前記ピ
ストンアッセンブリが、前記３室間をシールするシール
部を設けられ、該シール部が、該シール部の両側からの
流体の流れを止めることができることを特徴とする。In order to achieve the above object, a reversible valve according to the present invention has the following configuration. A valve body, a pilot valve for controlling switching of the valve body,
A reversible valve comprising a pilot pipe for fluidly connecting the pilot valve and the valve body or an external compressor,
The inside of the valve main body is divided into three chambers by a piston assembly, chambers at both ends of the three chambers are connected to a pilot valve, and a conduction port provided in a center chamber of the three chambers is controlled by a pilot valve. In a reversible valve which is opened and closed by moving a piston assembly, the piston assembly is provided with a seal portion for sealing between the three chambers, and the seal portion stops flow of fluid from both sides of the seal portion. It is characterized by being able to.
【００１２】本発明の可逆弁によれば、好適には、ピス
トンアッセンブリのシール部は、カップ状のシール材を
背中合わせに組み合わせた構成とすることができる。According to the reversible valve of the present invention, preferably, the seal portion of the piston assembly can be formed by combining cup-shaped seal members back to back.
【００１３】[0013]
【実施例】以下、図面に従って本発明の実施例について
説明する。図１に示した本発明による可逆弁は、弁本体
内の３つに分けられた室間の流体シール性を改善したも
のであり、従来技術を示す図２の構成と共通の部分は同
一の番号によって示し、その説明は省略する。Embodiments of the present invention will be described below with reference to the drawings. The reversible valve according to the present invention shown in FIG. 1 has improved fluid sealability between three divided chambers in a valve body, and the common parts with the configuration of FIG. It is indicated by a number, and its description is omitted.
【００１４】本発明の可逆弁の特徴であるピストンアッ
センブリ４は、室（Ａ）の方に向き室（Ａ）からの流体
の流れをシールする内向きシール材４ａと、室（Ａ）の
反対側に向き室（Ａ）への流体の流れをシールする外向
きシール材４ｂと、このシール材４ａ及び４ｂを保持固
定するための円板部材４ｃとを有する。The piston assembly 4, which is a feature of the reversible valve of the present invention, has an inward sealing member 4a for facing the chamber (A) to seal the flow of fluid from the chamber (A), and an opposite sealing member for the chamber (A). It has an outward seal member 4b for sealing the flow of fluid to the facing chamber (A), and a disk member 4c for holding and fixing the seal members 4a and 4b.
【００１５】このような構成としたため、室（Ａ）内
が、室（Ｂ，Ｃ）に対して高圧であろうと低圧であろう
と、また室（Ｂ）と室（Ｃ）の間の圧力であろうと、室
（Ａ，Ｂ，Ｃ）間の流体の流れは密封され、室（Ａ）の
圧力とは無関係に室（Ｂ，Ｃ）間の圧力差のみによって
ピストンアッセンブリ４は動くことができる。即ち、導
通口１ａ，１ｂの圧力にかかわらず、パイロットバルブ
６によって、弁本体１内のピストンアッセンブリ４を制
御することができ、これにより導通口１ａ，１ｂの流体
の流れを制御することのできる可逆弁を提供することが
できるのである。[0015] With such a configuration, the pressure in the chamber (A) may be high or low with respect to the chambers (B, C), or the pressure between the chamber (B) and the chamber (C). Regardless, the fluid flow between the chambers (A, B, C) is sealed, and the piston assembly 4 can move only by the pressure difference between the chambers (B, C) independently of the pressure in the chamber (A). . That is, the pilot valve 6 can control the piston assembly 4 in the valve main body 1 irrespective of the pressures in the communication ports 1a and 1b, thereby controlling the flow of the fluid in the communication ports 1a and 1b. A reversible valve can be provided.
【００１６】図３は、本発明と従来技術のシール性の違
いを示す図であり、この図に示すように、本発明によれ
ば両方向からの流体のシールを確実に行うことができる
のである。FIG. 3 is a diagram showing the difference in sealing performance between the present invention and the prior art. As shown in FIG. 3, according to the present invention, fluid can be reliably sealed from both directions. .
【図１】本発明による可逆弁の一実施例を示す概略図。FIG. 1 is a schematic view showing one embodiment of a reversible valve according to the present invention.
【図２】従来技術の可逆弁の一例を示す概略図。FIG. 2 is a schematic view showing an example of a conventional reversible valve.
【図３】本発明による可逆弁と従来の可逆弁のシール性
の違いを説明する図。FIG. 3 is a view for explaining a difference in sealing performance between a reversible valve according to the present invention and a conventional reversible valve.
１ 弁本体 １ａ 導通口 １ｂ 導通口 ２ 弁座 ３ 弁体 ３ａ 連結棒 ４ ピストンアッセンブリ ４ａ 内向きシール材 ４ｂ 外向きシール材 ４ｃ 円板部材 ５ａ パイロット管 ５ｂ パイロット管 ５ｃ パイロット管 ５ｄ パイロット管 ６ パイロットバルブ ６ａ パイロット弁座 ７ ソレノイドコイル ８ 可動鉄心 ９ パイロット弁体 １０ バネ １１ 固定鉄心 Ａ 室 Ｂ 室 Ｃ 室 DESCRIPTION OF SYMBOLS 1 Valve main body 1a Conducting port 1b Conducting port 2 Valve seat 3 Valve body 3a Connecting rod 4 Piston assembly 4a Inward seal material 4b Outward seal material 4c Disk member 5a Pilot pipe 5b Pilot pipe 5c Pilot pipe 5d Pilot pipe 6 Pilot valve 6a Pilot valve seat 7 Solenoid coil 8 Movable core 9 Pilot valve body 10 Spring 11 Fixed core A room B room C room
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F16K 31/12 F25B 41/04 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) F16K 31/12 F25B 41/04
Claims (1)
イロットバルブと、該パイロットバルブと該弁本体また
は外部の圧縮機とを流体連結するためのパイロット管と
からなる可逆弁で、該弁本体内が、ピストンアッセンブ
リにより３室に分けられ、該３室のうちの両端の室がパ
イロットバルブに連結され、該３室のうちの中央の室に
設けられた導通口がパイロットバルブによってピストン
アッセンブリが動かされることによって開閉される可逆
弁において、前記ピストンアッセンブリが、前記３室間
をシールするシール部を設けられ、該シール部が、カッ
プ状のシール材を背中合わせに組み合わせた構成であ
り、これにより該シール部の両側からの流体の流れを止
めることができることを特徴とする可逆弁。A reversible valve comprising a valve body, a pilot valve for controlling switching of the valve body, and a pilot pipe for fluidly connecting the pilot valve with the valve body or an external compressor. The interior of the valve body is divided into three chambers by a piston assembly, chambers at both ends of the three chambers are connected to a pilot valve, and a conduction port provided in a center chamber of the three chambers is connected to a piston by a pilot valve. in reversible valve that is opened and closed by the assembly is moved, said piston assembly is provided a seal for sealing between the third chamber, the seal portion is cut
The back-to-back combination of
Thus, the reversible valve can stop the flow of fluid from both sides of the seal portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10657992A JP3256270B2 (en) | 1992-04-24 | 1992-04-24 | Reversible valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10657992A JP3256270B2 (en) | 1992-04-24 | 1992-04-24 | Reversible valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05302687A JPH05302687A (en) | 1993-11-16 |
| JP3256270B2 true JP3256270B2 (en) | 2002-02-12 |
Family
ID=14437136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10657992A Expired - Fee Related JP3256270B2 (en) | 1992-04-24 | 1992-04-24 | Reversible valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3256270B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007078119A (en) * | 2005-09-15 | 2007-03-29 | Saginomiya Seisakusho Inc | Flow path selector valve |
| JP2009529121A (en) * | 2006-03-07 | 2009-08-13 | シミュテック ピーティワイ リミテッド | valve |
-
1992
- 1992-04-24 JP JP10657992A patent/JP3256270B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007078119A (en) * | 2005-09-15 | 2007-03-29 | Saginomiya Seisakusho Inc | Flow path selector valve |
| JP2009529121A (en) * | 2006-03-07 | 2009-08-13 | シミュテック ピーティワイ リミテッド | valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05302687A (en) | 1993-11-16 |
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