JPS58184373A - Temperature-type expansion valve - Google Patents
Temperature-type expansion valveInfo
- Publication number
- JPS58184373A JPS58184373A JP57065310A JP6531082A JPS58184373A JP S58184373 A JPS58184373 A JP S58184373A JP 57065310 A JP57065310 A JP 57065310A JP 6531082 A JP6531082 A JP 6531082A JP S58184373 A JPS58184373 A JP S58184373A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve seat
- temperature
- shape memory
- memory alloy
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/33—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
- F25B41/335—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant via diaphragms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/36—Expansion valves with the valve member being actuated by bimetal elements or shape-memory elements influenced by fluids, e.g. by the refrigerant
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は空調機等の温度式膨張弁に係り、特にその作動
流量範囲を拡大した温度式膨張弁に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature-type expansion valve for an air conditioner or the like, and particularly to a temperature-type expansion valve with an expanded operating flow range.
従来の温度式膨張弁は第１図に示すように、弁筒５内に
設けたダイヤフラム１にてダイヤフラム室１ａを形成し
、該室１ａは細通路を介し−Ｃ感熱部４を連通している
。上記ダイヤフラム１には弁棒２を連設し、升＃２先端
には弁体６を設け、弁座３に対向している。ダイヤフラ
ム１の変位によＱ弁棒２を介し弁体が移動し、弁座３と
の間隙を制御し、該間隙を流通する冷媒を減圧すると共
に流量を制御する。この温度式膨張弁の特性を第２図に
示す。一般の空調機にお＾て室内空気温度を一定とする
と、空調機の冷媒流量は外気温度により変化する。この
流量変化は冷媒温度変化を感熱部４にて感知して膨張弁
のダイヤフラム１を移動させ、弁棒２が上下し弁座３と
の間隙を変化させ−Ｃ行う。このためダイヤフラム１の
構造により、実線で示す理想的な流産調整に対し破線で
示すようにＧＷ、 −ＧＷ、の範囲が使用範囲となる。As shown in FIG. 1, a conventional thermostatic expansion valve has a diaphragm 1 provided in a valve cylinder 5 to form a diaphragm chamber 1a, and the chamber 1a communicates with a -C heat-sensitive section 4 through a narrow passage. There is. A valve rod 2 is connected to the diaphragm 1, and a valve body 6 is provided at the tip of square #2, facing the valve seat 3. The displacement of the diaphragm 1 causes the valve body to move via the Q-valve rod 2, controlling the gap with the valve seat 3, reducing the pressure of the refrigerant flowing through the gap, and controlling the flow rate. The characteristics of this thermostatic expansion valve are shown in FIG. In a general air conditioner, if the indoor air temperature is constant, the refrigerant flow rate of the air conditioner changes depending on the outside air temperature. This change in flow rate is achieved by sensing the temperature change of the refrigerant with the heat sensing section 4, moving the diaphragm 1 of the expansion valve, and moving the valve stem 2 up and down to change the gap between it and the valve seat 3. Therefore, due to the structure of the diaphragm 1, the usable range is GW, -GW, as shown by the broken line, compared to the ideal miscarriage adjustment shown by the solid line.
この流量調整可能な使用範囲を広げるにはダイヤフラム
等を人形にしなければならない等の問題点を有する。In order to widen the range of use in which the flow rate can be adjusted, there are problems such as the diaphragm etc. having to be made into a doll.
本発明は上記にムみて発明されたもので、流量制御の使
用範囲を大ｒｌＪに広げ、より広いは度条件（外気等」
にも＋１！Ｉ ＋１性のある温度式膨張弁を提供するこ
と金目的とする。The present invention was invented in view of the above, and it expands the range of use of flow rate control to a large extent, and allows for wider conditions (such as outside air).
+1 too! It is an object of the present invention to provide a thermostatic expansion valve having I +1 characteristics.
膨張弁の流ｔ ｒｌｉｆ制御範囲がダイヤフラムの変化
によることに着目し、ダイヤフラムの変化に関係ないも
う一つの流電調整機構を追加することＫより大巾な流量
調整範囲を潜ることができるようにした。もう一つとは
形状記憶合金を用い心棒と弁座の間隙を変化させる方式
である。Focusing on the fact that the flow rate control range of the expansion valve depends on changes in the diaphragm, we added another current adjustment mechanism that is unrelated to changes in the diaphragm, making it possible to cover a wider flow rate adjustment range. did. The other method uses a shape memory alloy to change the gap between the mandrel and the valve seat.
不発明の一実施例を第３図、第４図に基ずき説明する。An embodiment of the invention will be described based on FIGS. 3 and 4.
この温度式膨張弁は、空調機のｔｆ（凍サイクルに設置
され、空調機が常に最適な運転がでさるように空調機内
を流ｎる冷媒流ｔを調整するものであり、その構造を第
３図に示す。This temperature-type expansion valve is installed in the tf (freezing cycle) of the air conditioner, and is used to adjust the refrigerant flow t flowing through the air conditioner so that the air conditioner always operates optimally. Shown in Figure 3.
本実施例が第１図の従来例と相異するところは、弁棒１
２の途中に形状記憶台金にてなる棒部材１２ａを挿入し
た構造であり、その池の部分は第１図の従来例と同様で
ある。冷媒は膨張弁上部から入り弁体６の上部と弁座３
との間隙を通り矢印の方向に流れる。この時弁体６の一
上部と弁座３の関ｆｉは弁体６の上Ｆ方向の立置関係で
決まる。この弁体６の上下方向の位置は？°ツヤフラム
１の中・、、シ １
６位Ｉｔ（弁棒の取付部の位置）たよって決まる。The difference between this embodiment and the conventional example shown in FIG. 1 is that the valve stem 1
It has a structure in which a rod member 12a made of a shape memory base metal is inserted in the middle of the rod 2, and the pond part is the same as the conventional example shown in FIG. Refrigerant enters from the upper part of the expansion valve and passes through the upper part of the valve body 6 and the valve seat 3.
It flows in the direction of the arrow through the gap between the two. At this time, the relationship fi between the upper part of the valve body 6 and the valve seat 3 is determined by the vertical position of the valve body 6 in the upper F direction. What is the vertical position of this valve body 6? °In the center of the gloss flamm 1... 1 It is determined by the 6th position It (position of the valve stem attachment part).
またこのダイヤフラム１の中心位置は、ダイヤフラム上
部の空間に封入され友液（気体）状の圧力により変動し
、この圧力は感熱部４の温度によって変化する。即ち、
感熱部の温度が高くなると空間１ａの圧力は高くなりダ
イヤフラム１の中心は一ド方向に動く、この動きは弁体
１２を介し弁体６を移動させ、即ち弁体６を一ド方に移
動し、弁体６Ｆ部と弁座３の間隙が大きくなり、冷媒流
量は多くなる。−また感熱部４の温度が低下すると反対
に弁体と弁座との間隙が小さくなり流量は少なくなる。Further, the center position of the diaphragm 1 changes depending on the pressure of a liquid (gas) sealed in the space above the diaphragm, and this pressure changes depending on the temperature of the heat sensitive part 4. That is,
When the temperature of the heat sensitive part increases, the pressure in the space 1a increases and the center of the diaphragm 1 moves in one direction. This movement moves the valve element 6 via the valve element 12, that is, the valve element 6 is moved in one direction. However, the gap between the valve body 6F portion and the valve seat 3 becomes larger, and the refrigerant flow rate increases. - Also, when the temperature of the heat-sensitive part 4 decreases, the gap between the valve body and the valve seat becomes smaller, and the flow rate decreases.
この作動により第４図に示す実線のような制御ができる
。ここで外気温度が図に示すｔｏａである時の膨張弁の
弁座３を通った後の冷媒温度を感知して弁１１ｉ１１１
２に取付けらルている形状記憶合金の神都＋２８は前に
記憶させておいた形状（第３図の波線の形状）に伸びて
、その位置で弁体６を上下させることになり、第４図の
波線で示した制御が行なわルる。また外気温度が低ドし
冷媒温度７“１′１″ｔ″′・ ２閾５７′″８ａ勤酊
料６１部の面積の力が形状記憶合金が圧縮さｎているた
め再び元の位Ｉｆ（第３図の実線）に戻ることになりそ
の位置での上下動作を行う。このように弁体＝３−
６に形状記憶合金を用いることができる。また作動温度
が違う形状記憶合金を２１１！以上用いることによりさ
らに膨張弁の作動範囲を大きくすることができる。This operation allows control as shown by the solid line in FIG. 4. Here, when the outside air temperature is toa shown in the figure, the temperature of the refrigerant after passing through the valve seat 3 of the expansion valve is sensed, and the valve 11i111
The shape-memory alloy Shinto+28 attached to 2 will stretch to the previously memorized shape (the shape of the wavy line in Figure 3), and will move the valve body 6 up and down at that position. The control shown by the dotted line in FIG. 4 is performed. In addition, the outside air temperature is low and the area force of the refrigerant temperature 7"1'1"t"' 2 threshold 57'"8a 61 parts of the stimulant is compressed, so the shape memory alloy is compressed, so the area force returns to its original level If (solid line in Fig. 3) and performs up and down movements at that position. In this way, shape memory alloy can be used for the valve body =3-6. In addition, 211 shape memory alloys with different operating temperatures! By using the above, the operating range of the expansion valve can be further enlarged.
ま之第５図に示したようにコイルバネ形状とした形状記
憶合金９を閉じ、弁座３ａを可動させても同様な効果を
得ることができる。１０は弁座３ａの動きをスムースに
行なわしめるコイルバネを示す。As shown in FIG. 5, the same effect can be obtained by closing the shape memory alloy 9 shaped like a coil spring and moving the valve seat 3a. 10 indicates a coil spring that allows the valve seat 3a to move smoothly.
以上説明したように本発明によルば、温度式膨張弁によ
り冷媒流を調整範囲が大巾に広くなるため、広範囲の運
転条件におｊて最適な運転状況を与えることができる。As explained above, according to the present invention, the adjustment range of the refrigerant flow is widened by the thermostatic expansion valve, so that the optimum operating situation can be provided under a wide range of operating conditions.
し比がって、効率よい運転ができる。Comparatively, more efficient driving is possible.
また流量調整範囲の拡大により、従来膨張弁を２１１！
、又は大形の膨張弁を用いていた空調機に本発明の膨張
弁を用いることにより、安価でシンプルな空調機を提供
することができる。In addition, by expanding the flow rate adjustment range, the conventional expansion valve is now 211!
Alternatively, by using the expansion valve of the present invention in an air conditioner that uses a large expansion valve, an inexpensive and simple air conditioner can be provided.
第１図は従来技術の膨張弁の縦断面構造図、第４−
２図は従来技術の膨張弁の作動範囲の説明線図、第３図
は本発明の一実施例を示す膨張弁の縦断面構造図、第４
図は、第３図をこ示を膨張弁の作動範囲の説明線図、第
５図は、曲の実施例を示す膨張弁の縦断構造図である。
１・・・ダイヤフラム ２・・・心棒 ３川弁座４
・・・ｔｄＡ熱部 ５・・・形状記憶合金 ６・・
・ダイヤフラム上部空間 ７・・・弁座前の空間
８・・・弁座後の空間 ９・・・形状記憶合金バネ
１０・・・バネFig. 1 is a longitudinal cross-sectional structural diagram of a conventional expansion valve, Fig. 4-2 is an explanatory diagram of the operating range of the conventional expansion valve, and Fig. 3 is a longitudinal cross-sectional view of an expansion valve showing an embodiment of the present invention. Surface structure diagram, 4th
FIG. 3 is an explanatory diagram of the operating range of the expansion valve, and FIG. 5 is a longitudinal structural diagram of the expansion valve showing an embodiment of the curve. 1... Diaphragm 2... Mandrel 3 River valve seat 4
...tdA hot part 5...Shape memory alloy 6...
・Diaphragm upper space 7... Space in front of the valve seat
8... Space behind the valve seat 9... Shape memory alloy spring
10...Spring
Claims (1)
に連通１−１上記ダイヤフラムに弁棒を介在して弁体を
連設してなる温度式膨張弁において、弁棒に形状記憶合
金の棒部材を用いてなり、または形状記憶合金のコイル
部材に弁座を取付は弁座を可動に形成してなることを特
徴とする温度式A diaphragm is provided in the valve cylinder, and the diaphragm chamber is communicated with the detection unit 1-1 In a temperature-type expansion valve in which a valve body is connected to the diaphragm with a valve stem interposed therebetween, the valve stem is a rod member made of a shape memory alloy. Temperature type, characterized in that the valve seat is made movable by attaching the valve seat to a coil member made of a shape memory alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57065310A JPS58184373A (en) | 1982-04-21 | 1982-04-21 | Temperature-type expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57065310A JPS58184373A (en) | 1982-04-21 | 1982-04-21 | Temperature-type expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58184373A true JPS58184373A (en) | 1983-10-27 |
Family
ID=13283200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57065310A Pending JPS58184373A (en) | 1982-04-21 | 1982-04-21 | Temperature-type expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58184373A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61184178U (en) * | 1986-05-09 | 1986-11-17 | ||
| JPS63246580A (en) * | 1987-03-31 | 1988-10-13 | Tokieda Naomitsu | Valve |
| JP2008051439A (en) * | 2006-08-25 | 2008-03-06 | Tgk Co Ltd | Expansion device |
-
1982
- 1982-04-21 JP JP57065310A patent/JPS58184373A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61184178U (en) * | 1986-05-09 | 1986-11-17 | ||
| JPH045973Y2 (en) * | 1986-05-09 | 1992-02-19 | ||
| JPS63246580A (en) * | 1987-03-31 | 1988-10-13 | Tokieda Naomitsu | Valve |
| JP2008051439A (en) * | 2006-08-25 | 2008-03-06 | Tgk Co Ltd | Expansion device |
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