JPH06213336A - Flow control valve - Google Patents
Flow control valveInfo
- Publication number
- JPH06213336A JPH06213336A JP2380993A JP2380993A JPH06213336A JP H06213336 A JPH06213336 A JP H06213336A JP 2380993 A JP2380993 A JP 2380993A JP 2380993 A JP2380993 A JP 2380993A JP H06213336 A JPH06213336 A JP H06213336A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- small
- valve stem
- valves
- outlet
- 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.)
- Granted
Links
Landscapes
- Lift Valve (AREA)
- Sliding Valves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、全閉から全開までの間
の流量を完全に比例制御する流量制御弁に関し、特に、
空調設備における冷温水制御に用いて好適なものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow control valve for controlling the flow rate from fully closed to fully open, in particular,
It is suitable for use in cold / hot water control in air conditioning equipment.
【０００２】[0002]
【従来の技術】空調設備における冷温水、或いは、水冷
凝縮器における冷却水は、その熱負荷に応じて流量制御
を行う必要があり、その一つに流量制御弁がある。流量
制御弁では、弁体が電動モータ、又は流体圧等により駆
動され、所望の流量に応じた弁開度が確保できるように
なっている。例えば、空調設備において使用される際に
は、電動モータ等が設定温度に応じて駆動され、空調負
荷に比例して冷温水流量が制御されるようになってお
り、この結果、負荷変動に追従して冷温水流量が調節さ
れ、無駄のない効率的な運転が可能となるのである。2. Description of the Related Art It is necessary to control the flow rate of cold / hot water in air-conditioning equipment or cooling water in a water-cooled condenser according to its heat load, and one of them is a flow control valve. In the flow rate control valve, the valve body is driven by an electric motor, fluid pressure, or the like, so that a valve opening degree according to a desired flow rate can be secured. For example, when used in air conditioning equipment, electric motors are driven according to the set temperature, and the flow rate of cold / hot water is controlled in proportion to the air conditioning load. The flow rate of cold and hot water is adjusted, and efficient operation without waste is possible.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
流量制御弁は、一つの弁体で流量の０％から１００％ま
での全領域を制御しようとしているため、ある限界を越
えた少水量域に入ると、弁体が大き過ぎることにより制
御不能となり、単純なＯＮ−ＯＦＦ（開閉）制御としな
ければならず、比例制御とならない欠点があった。この
ため、空調設備に使用されるものでは、空調低負荷時に
必要以上の水量が流れてしまい、温度差がつかず、その
結果循環ポンプの稼働率が高くなり、無駄な電力を消費
することとなった。一方、このような欠点を解決するも
のとして、複数の弁体を並列に設け、複数の電動モータ
等により制御するものもあったが、弁体設置スペース及
び周囲の配管スペースが大きくなることから省スペース
化に反し、イニシャルコストも増大した。本発明は上記
状況に鑑みてなされたもので、全閉から全開までの間の
流量を完全に比例制御することができる流量制御弁を提
供し、もって、少水量域における流量制御不能に起因す
る空調運転等の不都合解消を図り、かつ従来と同等のス
ペースで設置出来ることを目的とする。However, since the conventional flow control valve attempts to control the entire region from 0% to 100% of the flow rate with one valve body, the flow rate control valve has a small amount of water exceeding a certain limit. If it enters, it becomes uncontrollable because the valve body is too large, and simple ON-OFF (open / close) control must be performed, which is a disadvantage that proportional control is not performed. For this reason, when used in air conditioning equipment, an excessive amount of water flows when the air conditioning has a low load, there is no temperature difference, and as a result, the operating rate of the circulation pump is high and wasteful power is consumed. became. On the other hand, as a means for solving such a drawback, there has been a method in which a plurality of valve elements are provided in parallel and controlled by a plurality of electric motors, etc. Contrary to space saving, the initial cost also increased. The present invention has been made in view of the above circumstances, and provides a flow rate control valve capable of completely proportionally controlling the flow rate from fully closed to fully opened, which is caused by the inability to control the flow rate in a small water volume region. The purpose is to eliminate inconveniences such as air conditioning operation, and to be able to install in the same space as the conventional one.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
の本発明に係る流量制御弁の構成は、流体の入口及び出
口をケーシングに形成し、対向する部分を一部分に有す
る隔壁で入口と出口とが連通不能となるようにケーシン
グ内を仕切り、バルブステムを対向する部分の隔壁に通
貫し、バルブステムの移動により入口と出口とを連通さ
せる大型弁を対向する部分の一方の隔壁とバルブステム
との間に設け、バルブステムの移動により入口と出口と
を連通させる大型弁より小さい小型弁を対向する部分の
他方の隔壁とバルブステムとの間に設け、バルブステム
の移動に伴い小型弁が全開した直後に続いて大型弁が開
き始める位置関係で大型弁と小型弁とをバルブステムに
設け、大型弁が開き始めると同時に大型弁の全開までの
間小型弁の弁座を塞ぐ弁体をバルブステムに設けたこと
を特徴とするものである。In order to achieve the above object, a flow control valve according to the present invention has a structure in which an inlet and an outlet of a fluid are formed in a casing, and a partition wall having a part facing each other is an inlet and an outlet. And the partition inside the casing so that they cannot communicate with each other, the valve stem penetrates through the partition wall of the opposing portion, and the large valve that communicates the inlet and the outlet by the movement of the valve stem is connected to one partition wall of the opposing portion and the valve. A small valve smaller than a large valve that is provided between the stem and the communication between the inlet and the outlet by the movement of the valve stem is provided between the other partition wall and the valve stem at the opposite part, and the small valve moves with the movement of the valve stem. A large valve and a small valve are installed in the valve stem immediately after the large valve starts to open, and the small valve seat is opened until the large valve starts to open at the same time as the large valve starts to open. The ingredients valve body is characterized in that provided on the valve stem.
【０００５】[0005]
【作用】少流量の時は、小型弁が開閉され、出口への流
体の通過量が比例制御され、その間、大型弁は全閉の状
態が保持される。流量が増加し、小型弁が全開の状態と
なり、なお、多量の通過が要求される場合には、大型弁
が小型弁の全開水量分だけ開かれると同時に、弁体によ
って小型弁の弁座は閉じられ、大型弁により、大水量域
の流量が比例制御される。When the flow rate is small, the small valve is opened / closed and the amount of fluid passing to the outlet is proportionally controlled, while the large valve is kept fully closed. When the flow rate increases and the small valve is in the fully open state, and a large amount of passage is required, the large valve is opened by the amount of water fully opened by the small valve, and at the same time the valve body opens the valve seat of the small valve. It is closed and the large valve controls the flow rate in the large water volume proportionally.
【０００６】[0006]
【実施例】以下、本発明に係る流量制御弁の好適な実施
例を図面を参照して詳細に説明する。図１は本発明流量
制御弁の断面図である。本体（ケーシング）１の左右
（図１の左右）には流体の入口である入口フランジ３、
及び出口である出口フランジ５が設けられ、入口フラン
ジ３、及び出口フランジ５は後述する弁体の開閉により
連通自在となっている。ケーシング１の内部には出口フ
ランジ５側に突出する大小二つの隔室７、９が形成さ
れ、隔室７、９はケーシング１内において上下方向で重
なり合っている。つまり、入口フランジ３からの流路
は、大小二つの隔室７、９に分岐されているのである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a flow control valve according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a sectional view of the flow control valve of the present invention. On the left and right of the main body (casing) 1 (on the left and right in FIG. 1) are inlet flanges 3 which are inlets for fluid,
And an outlet flange 5 serving as an outlet are provided, and the inlet flange 3 and the outlet flange 5 can communicate with each other by opening and closing a valve body described later. Inside the casing 1, two large and small compartments 7 and 9 projecting toward the outlet flange 5 are formed, and the compartments 7 and 9 are vertically overlapped in the casing 1. That is, the flow path from the inlet flange 3 is branched into two large and small compartments 7 and 9.
【０００７】ケーシング１の中央にはバルブステム（弁
棒）１１が上下方向（図１の上下方向）に挿嵌され、バ
ルブステム１１は隔室７の隔壁７ａ、７ｂ、及び隔室９
の隔壁９ａ、９ｂを貫通している。隔壁７ａ、７ｂとバ
ルブステム１１との間には一対の大型弁１３ａ、１３ｂ
がそれぞれ設けられ、大型弁１３ａ、１３ｂはバルブス
テム１１の上下動により入口フランジ３側の流路と出口
フランジ５側の流路を開閉する。また、隔壁９ａ、９ｂ
とバルブステム１１との間には一対の小型弁１５ａ、１
５ｂがそれぞれ設けられ、小型弁１５ａ、１５ｂもまた
バルブステム１１の上下動により入口フランジ３側の流
路と出口フランジ５側の流路を開閉するようになってい
る。バルブステム１１の下端には円柱状の弁体１７が取
り付けられ、弁体１７はケーシング１内の底面に形成さ
れた支持板１９に一部が保持されている。A valve stem (valve rod) 11 is inserted in the center of the casing 1 in the vertical direction (vertical direction in FIG. 1), and the valve stem 11 has the partition walls 7a and 7b of the compartment 7 and the compartment 9.
Through the partition walls 9a and 9b. A pair of large valves 13a, 13b are provided between the partition walls 7a, 7b and the valve stem 11.
The large valves 13a and 13b open and close the flow passage on the inlet flange 3 side and the flow passage on the outlet flange 5 side by the vertical movement of the valve stem 11. Also, the partition walls 9a and 9b
And a valve stem 11 between the pair of small valves 15a, 1
5b are provided, and the small valves 15a and 15b are also configured to open and close the flow passage on the inlet flange 3 side and the flow passage on the outlet flange 5 side by the vertical movement of the valve stem 11. A cylindrical valve body 17 is attached to the lower end of the valve stem 11, and the valve body 17 is partially held by a support plate 19 formed on the bottom surface of the casing 1.
【０００８】大型弁１３ａ、１３ｂと小型弁１５ａ、１
５ｂとの位置関係は、バルブステム１１が上方向に移動
された際、大型弁１３ａ、１３ｂの開放に先立ち、小型
弁１５ａ、１５ｂが先に開かれる配置となっている。ま
た、小型弁１５ｂは、バルブステム１１が上方に移動さ
れた際、小型弁１５ａの弁座を閉鎖できるようになって
いる。この際、同時に弁体１７は、小型弁１５ｂの弁座
を閉鎖できるようになってる。つまり、バルブステム１
１の初期段階の開放移動（上方向の移動）では、先ず小
型弁１５ａ、１５ｂによる流路の開放が行われ、次い
で、流路の開放は大型弁１３ａ、１３ｂに移行されるよ
うになっているのである。ケーシング１、隔室７、９、
バルブステム１１、大型弁１３ａ、１３ｂ、小型弁１５
ａ、１５ｂ、弁体１７を主な部材に流量制御弁２０が構
成されている。Large valves 13a, 13b and small valves 15a, 1
The positional relationship with 5b is such that when the valve stem 11 is moved upward, the small valves 15a, 15b are opened first before the large valves 13a, 13b are opened. Further, the small valve 15b can close the valve seat of the small valve 15a when the valve stem 11 is moved upward. At this time, the valve body 17 can simultaneously close the valve seat of the small valve 15b. That is, the valve stem 1
In the opening movement (upward movement) in the initial stage of 1, the flow paths are first opened by the small valves 15a and 15b, and then the opening of the flow paths is transferred to the large valves 13a and 13b. Is there. Casing 1, compartments 7, 9,
Valve stem 11, large valves 13a, 13b, small valve 15
The flow rate control valve 20 is composed of a, 15b and the valve body 17 as main members.
【０００９】このように構成される流量制御弁２０を用
いて流量制御が行われる際の作用を以下に説明する。入
口フランジ３から流体が流入し、この流体が少量の時
は、小型弁１５ａ、１５ｂが開閉される程度にバルブス
テム１１が除々に引き上げられ、出口フランジ５への流
体の通過量が比例制御される。その間、大型弁１３ａ、
１３ｂは、全閉の状態が保持される。流量が増加して、
小型弁１５ａ、１５ｂが全開の状態となり、なお、多量
の通過が要求されると、大型弁１３ａ、１３ｂが小型弁
１５ａ、１５ｂの全開水量（本実施例では流量制御弁全
開通過量の２０％とする）分だけ開かれると同時に、弁
体１７によって小型弁１５ａ、１５ｂの弁座は閉じられ
る。そして、今度は大型弁１３ａ、１３ｂにより、２０
％から１００％までの流量が比例制御される。一方、流
量が減少すると、先ず、大型弁１３ａ、１３ｂが閉じら
れる方向（下方向）にバルブステム１１が移動され、な
お、要求が少水量になると、大型弁１３ａ、１３ｂが閉
じられると同時に、小型弁１５ａ、１５ｂが大型弁１３
ａ、１３ｂの閉じられる直前の流量を確保する分だけ開
放され、２０％から０％までの流量が小型弁１５ａ、１
５ｂによって比例制御されるのである。The operation when the flow rate control is performed by using the flow rate control valve 20 configured as described above will be described below. When the fluid flows in from the inlet flange 3 and the amount of this fluid is small, the valve stem 11 is gradually pulled up to the extent that the small valves 15a and 15b are opened and closed, and the passage amount of the fluid to the outlet flange 5 is proportionally controlled. It Meanwhile, the large valve 13a,
13b is maintained in the fully closed state. The flow rate increases,
When the small valves 15a and 15b are in the fully opened state and a large amount of passage is required, the large valves 13a and 13b cause the large valves 13a and 13b to fully open the small valves 15a and 15b (in the present embodiment, 20% of the flow control valve fully opened passage amount). At the same time, the valve seats 17 close the valve seats of the small valves 15a and 15b. And this time, with the large valves 13a and 13b, 20
The flow rate from% to 100% is proportionally controlled. On the other hand, when the flow rate decreases, first, the valve stem 11 is moved in the direction in which the large valves 13a and 13b are closed (downward), and when the required water amount is small, the large valves 13a and 13b are closed at the same time. Small valves 15a and 15b are large valves 13
a, 13b are opened by the amount that secures the flow rate immediately before being closed, and the flow rate from 20% to 0% is small valve 15a, 1
It is proportionally controlled by 5b.
【００１０】バルブステム１１の駆動は、電動モータ、
流体圧等により行われ、その移動位置制御は、それぞれ
の弁開度に相当するバルブステム１１の昇降位置を記憶
させ、短時間に切り換えが行われるよう、周知技術を応
用するものである。また、本実施例のように、大型弁、
小型弁をそれぞれ一対づつ設ける複座式の弁とすること
で、バルブステム１１に働く流体からの力がそれぞれ上
下反対方向となり、相殺することによりバルブステム１
１の動作をスムースにでき、弁体全閉時の締切性能も良
好にできる。なお、本発明は、複座式に限定されるもの
ではなく、大小の弁体をそれぞれ一つとした単座式のも
のであっても勿論良く、この場合には、構造を簡単にで
き、低コストのものを提供することができる。また、配
管接続部分もフランジ継手のみでなくネジ継手、その他
の接続方法でも勿論良い。The valve stem 11 is driven by an electric motor,
The movement position control is performed by fluid pressure or the like, and a well-known technique is applied so that the ascending / descending position of the valve stem 11 corresponding to each valve opening degree is stored and switching is performed in a short time. In addition, as in this embodiment, a large valve,
By adopting a double-seat type valve in which each pair of small valves is provided, the forces exerted by the fluids acting on the valve stem 11 are directed in the opposite directions, and the valve stems 1 are offset by canceling each other.
The operation No. 1 can be performed smoothly, and the shutoff performance when the valve body is fully closed can be improved. The present invention is not limited to the double-seat type, but may be a single-seat type with one large and one small valve, respectively, in which case the structure can be simplified and the cost can be reduced. Can be provided. Further, the pipe connecting portion is not limited to the flange joint but may be a screw joint or other connecting method.
【００１１】[0011]
【発明の効果】以上詳細に説明したように、本発明に係
る流量制御弁によれば、少流量時には、小型弁で流体通
過量が比例制御され、流量が増加し、小型弁が全開の状
態でなお多量の通過が要求される場合には、大型弁で流
体通過量が比例制御されるので、全閉から全開までの流
量を、一台の流量制御弁で完全に比例制御することがで
きる。As described in detail above, according to the flow control valve of the present invention, when the flow rate is small, the fluid passage amount is proportionally controlled by the small valve, the flow rate is increased, and the small valve is fully opened. If a large amount of fluid is still required, the flow rate of fluid passage is proportionally controlled by the large valve, so the flow rate from fully closed to fully open can be completely proportionally controlled by one flow control valve. .
【図１】本発明流量制御弁の断面図である。FIG. 1 is a sectional view of a flow control valve of the present invention.
１ ケーシング ３ 入口フランジ（入口） ５ 出口フランジ（出口） ７ａ、７ｂ、９ａ、９ｂ 隔壁 １１ バルブステム １３ａ、１３ｂ 大型弁 １５ａ、１５ｂ 小型弁 １７ 弁体 １９ 支持板 ２０ 流量制御弁 1 Casing 3 Inlet Flange (Inlet) 5 Outlet Flange (Outlet) 7a, 7b, 9a, 9b Partition 11 Valve Stem 13a, 13b Large Valve 15a, 15b Small Valve 17 Valve Body 19 Support Plate 20 Flow Control Valve
Claims (1)
し、対向する部分を一部分に有する隔壁で前記入口と前
記出口とが連通不能となるように該ケーシング内を仕切
り、バルブステムを前記対向する部分の隔壁に通貫し、
該バルブステムの移動により前記入口と前記出口とを連
通させる大型弁を前記対向する部分の一方の隔壁と該バ
ルブステムとの間に設け、該バルブステムの移動により
前記入口と前記出口とを連通させる前記大型弁より小さ
い小型弁を前記対向する部分の他方の隔壁と該バルブス
テムとの間に設け、バルブステムの移動に伴い前記小型
弁が全開した直後に続いて前記大型弁が開き始める位置
関係で前記大型弁と前記小型弁とをバルブステムに設
け、前記大型弁が開き始めると同時に前記大型弁の全開
までの間前記小型弁の弁座を塞ぐ弁体をバルブステムに
設けたことを特徴とする流量制御弁。1. A fluid inlet and an outlet are formed in a casing, and a partition wall having a portion facing each other divides the inside of the casing so that the inlet and the outlet cannot communicate with each other, and the valve stem opposes each other. Penetrate the partition wall of the part,
A large valve for communicating the inlet and the outlet by moving the valve stem is provided between the partition wall of one of the facing portions and the valve stem, and the inlet and the outlet communicate with each other by moving the valve stem. A small valve smaller than the large valve is provided between the other partition of the facing portion and the valve stem, and the large valve starts to open immediately after the small valve is fully opened due to the movement of the valve stem. In relation to this, the large-sized valve and the small-sized valve are provided on the valve stem, and at the same time when the large-sized valve starts to open, the valve body that closes the valve seat of the small-sized valve until the large-sized valve is fully opened is provided on the valve stem. A characteristic flow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2380993A JP2644423B2 (en) | 1993-01-19 | 1993-01-19 | Flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2380993A JP2644423B2 (en) | 1993-01-19 | 1993-01-19 | Flow control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06213336A true JPH06213336A (en) | 1994-08-02 |
| JP2644423B2 JP2644423B2 (en) | 1997-08-25 |
Family
ID=12120666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2380993A Expired - Lifetime JP2644423B2 (en) | 1993-01-19 | 1993-01-19 | Flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2644423B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100724046B1 (en) * | 1999-11-01 | 2007-06-04 | 가부시키가이샤 가네카 | Method and device for manufacturing laminated plate |
| JP2013087856A (en) * | 2011-10-18 | 2013-05-13 | Pacific Ind Co Ltd | Flow control valve |
-
1993
- 1993-01-19 JP JP2380993A patent/JP2644423B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100724046B1 (en) * | 1999-11-01 | 2007-06-04 | 가부시키가이샤 가네카 | Method and device for manufacturing laminated plate |
| JP2013087856A (en) * | 2011-10-18 | 2013-05-13 | Pacific Ind Co Ltd | Flow control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2644423B2 (en) | 1997-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH05248558A (en) | Solenoid control valve | |
| US4133284A (en) | Cooling system for marine engines | |
| US3792716A (en) | Inline valve with reverse pressure closing means | |
| KR850008403A (en) | Heat Pump Air Conditioning Unit | |
| JPH07133878A (en) | Valve drive system | |
| JPH06213336A (en) | Flow control valve | |
| CN1981151A (en) | Flow path control valve | |
| US4967998A (en) | Valve noise reduction | |
| JPS6233175Y2 (en) | ||
| JPH079303B2 (en) | Water heater | |
| JPS6343083A (en) | Pilot type solenoid operated valve | |
| JPS5818108Y2 (en) | Air conditioning equipment | |
| JPS5868566A (en) | Temperature control valve | |
| JPS5818043A (en) | Switching system for water channel | |
| JPS5854248Y2 (en) | Automotive air conditioner control device | |
| JPH0343371Y2 (en) | ||
| JP3381121B2 (en) | Thermo-responsive steam trap | |
| KR200198395Y1 (en) | Solenoid valve | |
| JPS643886Y2 (en) | ||
| JPS6182084A (en) | Controlling fluid and its device | |
| JPH08278044A (en) | Central heat source type air conditioner | |
| JPH0893926A (en) | On-off valve | |
| JPS60114647A (en) | Antifreezer for heat pump unit | |
| JPH04190060A (en) | Expansion valve for air-conditioner | |
| JPS6121543Y2 (en) |