JPH0446275A - Globe type two way control valve - Google Patents
Globe type two way control valveInfo
- Publication number
- JPH0446275A JPH0446275A JP2151646A JP15164690A JPH0446275A JP H0446275 A JPH0446275 A JP H0446275A JP 2151646 A JP2151646 A JP 2151646A JP 15164690 A JP15164690 A JP 15164690A JP H0446275 A JPH0446275 A JP H0446275A
- Authority
- JP
- Japan
- Prior art keywords
- small
- valve body
- valve
- flow
- flow rate
- 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
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 244000256297 Euphorbia tirucalli Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、空調機コイルに供給する冷媒、熱媒の流量制
御等に用い、特に小流量の精密な制御が要求される場合
に利用する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is used to control the flow rate of refrigerant and heat medium supplied to air conditioner coils, and is particularly useful when precise control of small flow rates is required. .
従来の調節弁を第４図を用いて説明する。 A conventional control valve will be explained using FIG. 4.
（１）は弁箱、（２）は弁体、（３）は弁座、（４）は
弁体（２）と結合された弁棒、（５）は弁棒を介して、
弁体を上下させる操作機、（８）は流入口、（９）は流
出口である。(1) is the valve body, (2) is the valve body, (3) is the valve seat, (4) is the valve stem connected to the valve body (2), (5) is the valve stem,
An operating device that moves the valve body up and down, (8) is an inlet, and (9) is an outlet.
流体は、弁体（２）と弁座（３）との環状間隙面積のみ
により制御され、この間隙面積は、操作機（５）による
弁棒（４）の上下動作に連動した弁体（２）の上下動作
により変化する。The fluid is controlled only by the area of the annular gap between the valve body (2) and the valve seat (3), and this gap area is controlled by the area of the annular gap between the valve body (2) and the valve seat (3). ) changes depending on the up and down movement.
室温制御を行う空調機コイルに供給する冷媒。 Refrigerant supplied to air conditioner coils that control room temperature.
熱媒の流量は、制御の初期段階及び突発的外乱による瞬
時的室温変化の場合以外は、一般的に小流量の範囲で制
御される。The flow rate of the heating medium is generally controlled within a small flow rate range, except in the initial stage of control and in the case of instantaneous room temperature changes due to sudden disturbances.
しかし、従来の調節弁では、第４図に示したように流量
調節部が弁体（２）と弁座（３）との１箇所の環状間隙
のみで、かつ、弁座口径は、全開流量を確保するために
、必然的に大きくならざるを得ないため、小流量域での
弁体（２）と弁座（３）の間隙寸法は微小なものとせざ
るを得ない。このような構造の場合の小流量域での流量
特性は、弁体（２）や弁座（３）の加工精度限界や熱膨
張等諸々の要因の影響を受け、しばしば要求される特性
が得られない場合が発生する。要求される特性が得られ
ないと、制御時に過流量又は流量不足を生じ、調節弁は
、しばしばハンチング現象を起すことがある。このハン
チング現象により、室温が変動し、快適性が損なわれる
ばかりか、調節弁の性能劣化、寿命の低下という問題が
発生する。この問題点を解決するために、第３図に示す
ような大容量の調節弁と小容量の調節弁とを並列に設置
する方法を実施した例もあるが、調節弁が２台必要とな
るためコストが高くなることや、設置スペースが大きく
なり、空調機等に収納できない等の問題点があった。However, in the conventional control valve, as shown in Fig. 4, the flow rate control part has only one annular gap between the valve body (2) and the valve seat (3), and the valve seat diameter is limited to the fully open flow rate. In order to ensure this, the gap between the valve body (2) and the valve seat (3) must be made very small in the small flow rate range. In the case of such a structure, the flow characteristics in the small flow range are affected by various factors such as the machining accuracy limit of the valve body (2) and the valve seat (3), thermal expansion, etc., and it is often difficult to obtain the required characteristics. There are cases where it is not possible. If the required characteristics are not obtained, an overflow or insufficient flow will occur during control, and the control valve will often experience a hunting phenomenon. This hunting phenomenon causes the room temperature to fluctuate, which not only impairs comfort, but also causes problems such as deterioration in the performance and shortening of the life of the control valve. In order to solve this problem, there are examples of installing a large-capacity control valve and a small-capacity control valve in parallel, as shown in Figure 3, but this requires two control valves. Therefore, there were problems such as increased cost, increased installation space, and the inability to store it in an air conditioner or the like.
本発明は、上記問題点に鑑み、小流量域から大流量域ま
で連続的に流量を制御するとともに、小流量域の精密な
制御を実現せしめるため、弁箱内部に大流量流路と小流
量流路とを並設する。In view of the above-mentioned problems, the present invention provides a large flow path and a small flow path inside the valve box in order to continuously control the flow rate from the small flow area to the large flow area, and to achieve precise control in the small flow area. The flow path is installed in parallel.
そして、大流量流路には、大口径で、容量係数の大きな
大流量調節部を設け、小流量流路には、小口径で、容量
係数の小さな小流量調節部を設けたことを特徴とする調
節弁である。The large flow path is provided with a large flow rate adjustment section with a large diameter and a large capacity coefficient, and the small flow path is provided with a small flow rate adjustment section with a small diameter and a small capacity coefficient. It is a control valve that
作用を一実施例に対応する第１図を用いて説明する。 The operation will be explained using FIG. 1 corresponding to one embodiment.
第１図は、弁棒（＋０４）が全開から閉方向、つまり下
方向に移動し、大弁体（１０２ａ）と大弁叩（１（１３
ａ）からなる大流量調節部が全開になった状態を示す。In Figure 1, the valve stem (+04) moves from fully open to closed direction, that is, downward, and the large valve body (102a) and the large valve strike (1 (13)
This figure shows the state in which the large flow rate adjustment section consisting of a) is fully open.
この状態で、操作機（＋０５）が弁棒（１０４）を開方
向、つまり上方向に引き上げるように作動すると、弁棒
ｆ１０４） と小弁体（１０２ｂ）との段部とともに
大弁体（Ｉ（１２ａｌは上昇し、大流量調節部に環状間
隙が生じる。流体は、この間隙及び弁体ガイド（１０６
！ に設けた小孔（＋１（１）を通過し、大流量流路（
＋１２１ に流れ、小流量流路（＋１３＋に流れる流体
と合流し、流出口（１０９＞に達する。大流量流路（＋
１２）に流れる流量は、前述した大流量調節部の間隙面
積により制御される。In this state, when the operating device (+05) operates to pull the valve stem (104) in the opening direction, that is, upward, the large valve body (I (12al rises, creating an annular gap in the large flow rate adjustment part. The fluid flows through this gap and the valve body guide (106
! It passes through the small hole (+1 (1)) provided in the large flow channel (
+121 flows into the small flow channel (+13+), and reaches the outlet (109>).The large flow channel (+
The flow rate flowing through 12) is controlled by the gap area of the large flow rate adjustment section described above.
次に、操作機−＋１０５）が弁棒ｆ１０４）を閉方向に
押し下げるように作動すると、大弁体（］０２ａ）は、
ばね（Ｉｌｌ＞の反発力により、弁棒（１０４） と小
弁体（Ｉｆ１２ｂ）との段部に密着した状態で、大流量
調節部が全開になる位置まで下降し、第１図に示す状態
に戻る。従って、大流量調節部を閉止する力は、ばね（
Ｉｌｌ）のみによって供給される。Next, when the operating device -+105) operates to push down the valve stem f104) in the closing direction, the large valve body (]02a)
Due to the repulsive force of the spring (Ill), the large flow rate adjustment part descends to the fully open position while being in close contact with the step between the valve stem (104) and the small valve body (If12b), and the state shown in Fig. 1 is reached. Return to . Therefore, the force that closes the large flow rate adjustment section is
Supplied exclusively by Ill.
さらに弁棒（１０４）が下降すると、弁棒（１０４）と
小弁体（１（１２ｂ、）の段部は、大弁体（１０２ａ）
から離脱し、小弁体（１０２ｂ）は単独で下降する。When the valve stem (104) further descends, the step between the valve stem (104) and the small valve body (1 (12b)) becomes the large valve body (102a).
The small valve body (102b) moves down independently.
この状態から流出口（１０９）に達する全流量は、小流
量流路（＋＋３）のみに流れる流量となり、小弁体Ｔｌ
０２ｂ）と小弁座（１０３ｂ）からなる間隙面積のみに
より制御される。From this state, the total flow rate that reaches the outlet (109) becomes a flow rate that flows only through the small flow path (++3), and the small valve body Tl
02b) and the small valve seat (103b).
以下、本発明の具体的な実施例を図面を用いて説明する
。Hereinafter, specific embodiments of the present invention will be described using the drawings.
第１図は、一実施例を示す断面図である。FIG. 1 is a sectional view showing one embodiment.
弁箱（１０１＋内部に、大流量流路（１１２１と小流量
流路（ｌ ＋ ３）とを並設する。大流量流路（１１２
）には、大弁体ｆ１０２ａ）と大弁座（］０３ａ）から
なる大流量調節部を弁棒ｆ１０４）と同軸上に設ける。Inside the valve box (101+, a large flow channel (1121) and a small flow channel (l + 3) are arranged side by side.A large flow channel (112)
) is provided with a large flow rate adjusting section consisting of a large valve body f102a) and a large valve seat (]03a) coaxially with the valve stem f104).
大弁体（ＩＱ２ａ）は、弁棒（１０４１の軸方向に、滑
動自在とし、流体通過用小孔（１１０＋を有する弁体ガ
イド（＋０６）内部に設置する。又、大弁体（１０２ａ
）は、弁棒（１０４＋と小弁体（＋０２ｂ）との段部と
としに上下動作するものとする。大弁座（１０３ａ）は
、弁箱（１０１）に直接設けるが、又は別途取り付ける
。大弁体（１０２ａ）とふた（１０７） との空間に
は、大流量調節部を閉止するための大弁体（１０２ａ）
に対する付勢手段として、ばね（Ｉｌｌ）を設ける。The large valve body (IQ2a) is slidable in the axial direction of the valve stem (1041) and is installed inside the valve body guide (+06) having a small hole (110+) for fluid passage.
) shall move up and down as a step between the valve stem (104+ and the small valve body (+02b)).The large valve seat (103a) is provided directly on the valve body (101) or is attached separately. In the space between the large valve body (102a) and the lid (107), there is a large valve body (102a) for closing the large flow rate adjustment section.
A spring (Ill) is provided as a biasing means.
小流量流路用３）には、小弁体（１０２ｂ）と、大弁座
（１（１３ｂ）と同様に直接又は別途設けた小弁座（１
０３ｂ）からなる小流量調節部を弁棒（１０４） と
同軸上に設ける。小弁体（１０２ｂ）は、弁棒（１０４
）と一体型或いは、二体組立型として構成され、大弁体
（１０２ａ）より小径の弁体径を有する。The small valve body (102b) and the small valve seat (102b) provided directly or separately in the same way as the large valve seat (1 (13b)) are used for the small flow path (3).
03b) is provided coaxially with the valve stem (104). The small valve body (102b) is connected to the valve stem (104
), and is configured as an integral type or a two-piece assembly type, and has a valve body diameter smaller than that of the large valve body (102a).
かつ、小弁体（１０２ｂ）の上下動変化量に対する小流
量調節部の容量変化量を、大弁体（１０２ａ）の上下動
変化量に対する大流量調節部の容量変化量より小さくす
ることにより、小流量域の精密な制御を可能にする。In addition, by making the amount of change in the capacity of the small flow rate adjustment section with respect to the amount of change in vertical movement of the small valve body (102b) smaller than the amount of change in capacity of the large flow rate adjustment section with respect to the amount of change in vertical movement of the large valve body (102a), Enables precise control in small flow areas.
第２図は、上記実施例の大弁体（１０２ａ）周辺に関す
る他の実施例を示す部分断面図である。第１図と異る点
は、第１図では、大弁体（１０２ａ）に対する付勢手段
としてのばね（ＩＩ＋）が大弁体（ＩＯ２ａ）ｈふた（
１０７）との空間に設けであるのに対し、第２図では、
大弁体ｆ１０２ａ）内部に設けた点である。FIG. 2 is a partial cross-sectional view showing another embodiment regarding the vicinity of the large valve body (102a) of the above embodiment. The difference from FIG. 1 is that in FIG. 1, the spring (II+) as a biasing means for the large valve body (102a) is
107), whereas in Fig. 2,
This is the point provided inside the large valve body f102a).
以上述へた通り、本発明の調節弁は、小流量域の精密な
制御を含め、小流量域から大流量域までの流量制御を１
台の調節弁て行うことにより、従来の１台の調節弁で制
御を行った場合の問題点■調節弁のハンチング現象■ハ
ンチング現象に伴う調節弁の性能劣化、寿命低下を防止
することが可能となり、制御における安定化、快適化、
メンテナンスの削減に寄与する所が大きい。又、従来実
施された、大容量調節弁と小容量調節弁とを並列に設置
する方法において発生する問題点■コストが高い■設置
スペースが大きい■配線部材・配線工数の増■配管コス
ト増■故障率の増等が全て解消され、産業玉料する所が
大である。As described above, the control valve of the present invention can perform flow control from small flow areas to large flow areas, including precise control in small flow areas.
By using multiple control valves, it is possible to prevent the problems associated with conventional control with one control valve - Hunting phenomenon of the control valve - Deterioration of performance and shortened lifespan of the control valve due to hunting phenomenon. This results in more stable and comfortable control,
This greatly contributes to reducing maintenance costs. In addition, problems that occur in the conventional method of installing a large capacity control valve and a small capacity control valve in parallel: - High cost - Large installation space - Increased wiring materials and wiring man-hours - Increased piping cost - All problems such as an increase in failure rates have been eliminated, and this has greatly improved the industry.
上記説明では、室温制御を例に説明したが、その他の分
野、例えば化学１石油プラント等幅広い用途に適用可能
な発明である。In the above explanation, room temperature control was explained as an example, but the invention is applicable to a wide range of applications such as other fields, such as chemical and petroleum plants.
第１図は本発明の一実施例を示す断面図、第２図は、第
１図に示した実施例の大流量調節部に関する他の実施例
を示す部分断面図、第３図は大容量調節弁と小容量調節
弁とを並列に設置した従来の配管例、第４図は従来の調
節弁を示す断面図である。
（１） 、 （ｌｏｔ）・・・弁 箱（２）・・・・
・・・・・・・・・・弁 体ｉ１［１２ａ）・・・・・
・・・・・・大弁体（１０２ｂ）・・・・・・・・・・
・・小弁体）・・・・・・・・・・・・・・・弁 座０
３ａ）・・・・・・・・・・・・大弁座０３ｂ）・・・
・・・・・・・・小弁座） 、 （Ｉ［１４）・・・
弁 棒
５） 、 （１０５）・・・操作機
６）・・・・・・・・・・・・・・・第２弁座１０６）
・・・・・・・・・・・・弁体ガイド７） 、 Ｆ１
Ｏ７）・・・ふ た
８ Ｆ２Ｏ３）・・・流入口
９） 、 （１０９）・・・流出口
１１０）・・・・・・・・・・・小 孔１１１）・・・
・・・・・・・・・ば ね第 １ 図
第２図
第
図FIG. 1 is a sectional view showing one embodiment of the present invention, FIG. 2 is a partial sectional view showing another embodiment of the large flow rate adjustment section of the embodiment shown in FIG. 1, and FIG. 3 is a large capacity An example of conventional piping in which a control valve and a small capacity control valve are installed in parallel, FIG. 4 is a sectional view showing a conventional control valve. (1), (lot)...valve box (2)...
...... Valve body i1 [12a)...
......Large valve body (102b)...
・・Small valve body）・・・・・・・・・・・・・・・Valve seat 0
3a)......Large valve seat 03b)...
...... small valve seat), (I[14)...
Valve rod 5), (105)...Operating device 6)...Second valve seat 106)
...... Valve body guide 7), F1
O7)...Lid 8 F2O3)...Inlet 9), (109)...Outlet 110)...Small hole 111)...
・・・・・・・・・Spring Figure 1 Figure 2 Figure 2
Claims (2)
流量流路と小流量流路を並設し、それぞれに、容量係数
の異る、独立した流量調節部を設けたことを特徴とする
調節弁。(1) A globe-type two-way control valve is characterized by having a large flow passage and a small flow passage arranged side by side inside the valve box, and each having an independent flow rate adjustment section with a different capacity coefficient. control valve.
節流路の調節部を構成する小弁座と係合する小弁体を設
け、かつ該小弁体の上方に、前記大流量調節流路の調節
部を構成する大弁座を係合する大弁体を前記弁棒の軸方
向に滑動自在に設け、前記操作機の指示移動量に連動し
て前記小弁体を移動させ、前記小流量調節流路の流量調
節を行うと共に、前記小弁体が全開状態になった後、前
記弁棒の段部もしくは前記小弁体の段部に係止された、
前記大弁体が移動して前記大流量調節流路の流量調節を
行なうことを特徴とする請求項１記載の流量調節弁。(2) A small valve body that engages with a small valve seat constituting the adjustment section of the small flow rate adjustment channel is provided at the lower end of the valve rod connected to the operating device, and above the small valve body, the A large valve body that engages a large valve seat constituting the adjustment section of the large flow rate regulating flow path is provided to be slidable in the axial direction of the valve stem, and the small valve body is moved in conjunction with the movement amount instructed by the operating device. moved to adjust the flow rate of the small flow rate adjustment channel, and after the small valve body is fully open, the small valve body is latched to a stepped portion of the valve stem or a stepped portion of the small valve body;
2. The flow rate control valve according to claim 1, wherein the large valve body moves to adjust the flow rate of the large flow rate control channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2151646A JPH0446275A (en) | 1990-06-12 | 1990-06-12 | Globe type two way control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2151646A JPH0446275A (en) | 1990-06-12 | 1990-06-12 | Globe type two way control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0446275A true JPH0446275A (en) | 1992-02-17 |
Family
ID=15523114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2151646A Pending JPH0446275A (en) | 1990-06-12 | 1990-06-12 | Globe type two way control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0446275A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001063185A1 (en) * | 2000-02-25 | 2001-08-30 | Zexel Valeo Climate Control Corporation | Refrigerating cycle |
| JP2013087856A (en) * | 2011-10-18 | 2013-05-13 | Pacific Ind Co Ltd | Flow control valve |
-
1990
- 1990-06-12 JP JP2151646A patent/JPH0446275A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001063185A1 (en) * | 2000-02-25 | 2001-08-30 | Zexel Valeo Climate Control Corporation | Refrigerating cycle |
| JP2013087856A (en) * | 2011-10-18 | 2013-05-13 | Pacific Ind Co Ltd | Flow control valve |
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