JPS6312282Y2 - - Google Patents
Info
- Publication number
- JPS6312282Y2 JPS6312282Y2 JP1983040014U JP4001483U JPS6312282Y2 JP S6312282 Y2 JPS6312282 Y2 JP S6312282Y2 JP 1983040014 U JP1983040014 U JP 1983040014U JP 4001483 U JP4001483 U JP 4001483U JP S6312282 Y2 JPS6312282 Y2 JP S6312282Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- port
- sliding
- outlet
- valve
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 19
- 239000003507 refrigerant Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
Landscapes
- Multiple-Way Valves (AREA)
Description
【考案の詳細な説明】
〔考案の目的〕
（産業上の利用分野）
本考案は切換弁に係り、例えばヒートポンプ特
に圧縮機、凝縮器および蒸発器よりなる冷媒流体
による冷凍サイクルにおいて、温暖な季節におい
ては室内を冷却し、寒冷な季節においては室内を
暖めるように冷媒流体の流動を逆転させるような
切換動作を行なう摺動弁体の構造に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a switching valve, and is used in a warm season, for example, in a heat pump, particularly in a refrigeration cycle using a refrigerant fluid consisting of a compressor, a condenser, and an evaporator. relates to the structure of a sliding valve body that performs a switching operation that reverses the flow of refrigerant fluid to cool a room and warm the room in cold seasons.
（従来の技術）
従来の切換弁は、例えば実開昭50−129926号公
報に示されているように、弁本体の一側部に導入
口を形成すると共に、この導入口側と対向する他
側部に導出口とこの導出口の両側に位置して室内
側熱交換器に接続される第１の通口と、室外側熱
交換器に接続される第２の通口とをそれぞれ開口
し、この弁本体の両端に接続した導管を切換弁を
介して前記弁本体の導出口にいずれか一方を選択
的に連通させ、前記弁本体内に絞り孔を有し連結
された一対のピストンを摺動自在に設け、このピ
ストンに連動して摺動され前記弁本体の導出口と
両側通口のいずれか一方のみを選択的に連通させ
る摺動弁体を前記弁本体に摺動自在に設けたもの
においては、第１図および第２図に示されるよう
に、導出口１およびこの導出口１の両側に位置す
る第１の通口２、第２の通口３とを開口した弁座
面４と擦れ合う摺動弁体５の摺動面６に流体路を
形成する凹部７が穿設されており、この摺動弁体
５の凹部７は、開口面の形状が長方形であつて、
長手方向両端部が、摺動弁体５の摺動時に前記第
１の通口２と第２の通口３とを連通させずに両側
通口２，３を閉塞するように両側通口２，３の対
向縁部を接線とする直線状に設けられている。(Prior Art) A conventional switching valve, as shown in, for example, Japanese Utility Model Application Laid-Open Publication No. 50-129926, has an inlet formed on one side of a valve body, an outlet formed on the other side opposite the inlet, and a first communication port connected to an indoor heat exchanger and a second communication port connected to an outdoor heat exchanger, which are located on both sides of the outlet, and either one of the conduits connected to the opposite ends of the valve body is selectively connected to the outlet of the valve body via a switching valve, and a pair of connected pistons having a throttle hole in the valve body are connected to the outlet of the valve body. In the valve body, a piston is slidably provided and a sliding valve body is slidably provided on the valve body, which slides in conjunction with the piston and selectively connects the outlet port and either one of the two side ports of the valve body. As shown in Figs. 1 and 2, a recess 7 forming a fluid path is drilled in a sliding surface 6 of the sliding valve body 5 which rubs against a valve seat surface 4 which opens into the outlet port 1 and a first port 2 and a second port 3 located on both sides of the outlet port 1. The recess 7 of the sliding valve body 5 has an opening surface which is rectangular,
Both longitudinal ends are arranged in a straight line with the opposing edges of the two side ports 2, 3 as tangents so as to close the two side ports 2, 3 without communicating the first port 2 and the second port 3 when the sliding valve body 5 slides.
この両側通口２，３を閉塞することは摺動弁体
５の摺動時に両側通口２，３が連通すると、低圧
側と高圧側とが連通して、摺動弁体５の切換えに
必要な圧力差が得られず、摺動弁体５の切換不良
が生じるのを防止するためである。 Closing these both-side ports 2 and 3 means that when the both-side ports 2 and 3 communicate when the sliding valve body 5 is sliding, the low pressure side and the high pressure side communicate with each other, and the sliding valve body 5 is switched. This is to prevent failure in switching the sliding valve body 5 due to failure to obtain a necessary pressure difference.
（考案が解決しようとする問題点）
上述のように、摺動弁体５の凹部７の両端部を
摺動弁体５の摺動時に第１の通口２と第２の通口
３とを連通させずに両側通口２，３を閉塞するよ
うに両側通口２，３の対向縁部を接線とする直線
状に設けているので、第１図および第２図のよう
に、摺動弁体５の切換後、凹部７の長手方向の両
縁部８，９が導出口１およびこの導出口１に前記
凹部７を介して連通する第１の通口２若しくは第
２の通口３の開口面の一部を覆つてしまうため、
この覆われた分だけ流体路が狭くなり、それだけ
流体圧力の損失が多く熱効率が悪かつた。(Problems to be Solved by the Invention) As described above, when the sliding valve body 5 slides, the both ends of the recess 7 of the sliding valve body 5 are connected to the first port 2 and the second port 3. Since the openings 2 and 3 on both sides are provided in a straight line with the opposing edges as tangent lines so as to close the openings 2 and 3 on both sides without making them communicate with each other, as shown in Figs. After switching the valve body 5, both longitudinal edges 8, 9 of the recess 7 connect to the outlet 1 and the first or second outlet 2 or 2 communicating with the outlet 1 via the recess 7. Because it covers part of the opening surface of 3,
The fluid path became narrower by the amount covered, and the loss of fluid pressure was correspondingly greater, resulting in poor thermal efficiency.
反面、摺動弁体５の凹部７の開口面を広くし
て、導出口１および第１の通口２若しくは第２の
通口３の一部を覆うことのないようにすると、摺
動弁体５の切換摺動時に導出口１に第１の通口２
と第２の通口３とを同時に連通される不都合が生
じるので、第１の通口２と第２の通口３とを導出
口１から広く離間させなくてはならず、切換弁自
体の大型化を避けられない欠点を有している。 On the other hand, if the opening surface of the recess 7 of the sliding valve body 5 is widened so that it does not cover part of the outlet 1 and the first port 2 or the second port 3, the sliding valve When the body 5 is switched and slid, the first outlet 2 is connected to the outlet 1.
Since there is an inconvenience that the first port 2 and the second port 3 are communicated with each other at the same time, it is necessary to keep the first port 2 and the second port 3 widely apart from the outlet 1, and the switching valve itself It has the disadvantage of being unavoidably large.
本考案は、上述のような点に鑑みなされ、摺動
弁体の摺動時に第１および第２の通口を閉塞でき
る構造を有した上で、摺動弁体の切換後における
導出口と第１の通口または第２の通口の開口面の
面積を広くして流体路を広げ、流体の圧力損失を
できるだけ少なくできる切換弁を提供することを
目的とする。 The present invention was developed in view of the above-mentioned points, and has a structure that can close the first and second ports when the sliding valve body is slid. It is an object of the present invention to provide a switching valve that can widen the area of the opening surface of a first port or a second port to widen a fluid path and reduce fluid pressure loss as much as possible.
（問題点を解決するための手段）
本考案は、弁本体１２の弁座面２９に導出口１
４とこの導出口１４の両側に位置して第１の通口
１５および第２の通口１６をそれぞれ開口し、こ
の導出口１４を両側通口１５，１６のいずれか一
方のみに選択的に連通させる摺動弁体３０を前記
弁本体１２の弁座面２９に摺動自在に設け、そし
て、前記摺動弁体３０は、前記弁座面２９と擦れ
合う摺動面３１に前記導出口１４と両側通口１
５，１６のいずれか一方とを連通させる流体路３
２を形成する凹部３３が切換方向に長く穿設さ
れ、この凹部３３の長手方向両端部に、摺動弁体
３０の摺動時に前記第１および第２の通口１５，
１６を閉塞可能とする必要最少限の形状である前
記第１および第２の通口１５，１６と略同一径の
円弧形状の突出部３４，３５を設けたものであ
る。
(Means for solving the problem) The present invention provides an outlet port 1 on the valve seat surface 29 of the valve body 12.
4 and a first port 15 and a second port 16 are opened on both sides of the outlet port 14, and the outlet port 14 is selectively opened to only one of the both side ports 15 and 16. A sliding valve body 30 that communicates with the valve seat surface 29 of the valve body 12 is slidably provided, and the sliding valve body 30 has the outlet port 14 on the sliding surface 31 that rubs against the valve seat surface 29. and both side openings 1
Fluid path 3 communicating with either one of 5 and 16
A concave portion 33 forming the valve body 2 is formed long in the switching direction, and at both longitudinal ends of the concave portion 33, when the sliding valve body 30 slides, the first and second vents 15,
Arc-shaped protrusions 34, 35 having substantially the same diameter as the first and second ports 15, 16 are provided, which are the minimum necessary shape to enable the openings 16 to be closed.
（作用）
本考案の切換弁は、摺動弁体３０の摺動時に第
１および第２の通口１５，１６を閉塞するための
凹部３３の突出部３４，３５を、第１および第２
の通口１５，１６を閉塞可能とする最少限の突出
形状すなわち第１および第２の通口１５，１６の
開口縁形状と略同一の形状にしたことにより、摺
動弁体３０の切換後に、前記突出部３４，３５に
よつて導出口１４と第１の通口１５または第２の
通口１６の開口面を覆うのを最少限に抑える。(Function) The switching valve of the present invention allows the protrusions 34 and 35 of the recess 33 to close the first and second ports 15 and 16 when the sliding valve body 30 slides.
By making the openings 15 and 16 have the minimum protruding shape that allows them to be closed, that is, the shape that is approximately the same as the opening edge shape of the first and second openings 15 and 16, after switching the sliding valve body 30, , covering the opening surfaces of the outlet 14 and the first or second passage 16 by the protrusions 34 and 35 is minimized.
（実施例）
次に、本考案の一実施例を冷凍装置に用いた場
合について、図面に基づいて説明する。(Example) Next, a case where an example of the present invention is used in a refrigeration system will be described based on the drawings.
第３図ないし第５図において、１０は圧縮機
で、この圧縮機１０の高圧側は導管１１によつて
円筒形状の四方弁の弁本体１２の一側面の中央部
より一端側に偏位して開口した導入口１３に連通
されている。また、この弁本体１２の中央部に前
記導入口１３側の一側面に対向する他側面に導出
口１４と、前記導出口１４に隣接して弁本体１２
の軸方向の両側に第１の通口１５と第２の通口１
６とがそれぞれ開口され、この第１の通口１５と
前記導入口１３とは直線上に相対向されており、
さらに、前記第１の通口１５と第２の通口１６と
はそれぞれ第１の熱交換器１７と第２の熱交換器
１８とに導管１９，２０を介して連通され、この
両熱交換器１７，１８は流量制限管２１にて連通
されている。そして、この熱交換器１７，１８は
それぞれ凝縮器と蒸発器との作用が冷媒流体経路
の切換えによつて行なわれるようになつており、
第１の熱交換器１７は室内空気と熱交換を行なう
ように配置され、また第２の熱交換器１８は室外
の空気と熱交換を行なうよう配置されている。 In FIGS. 3 to 5, 10 is a compressor, and the high pressure side of this compressor 10 is offset from the center of one side of the valve body 12 of the cylindrical four-way valve to one end side by a conduit 11. It communicates with an inlet 13 which is open. Further, in the center of the valve body 12, an outlet 14 is provided on the other side opposite to one side on the inlet 13 side, and an outlet 14 is provided adjacent to the outlet 14.
A first port 15 and a second port 1 are provided on both sides in the axial direction.
6 are opened, and the first port 15 and the introduction port 13 are opposed to each other on a straight line,
Furthermore, the first vent 15 and the second vent 16 are communicated with a first heat exchanger 17 and a second heat exchanger 18 via conduits 19 and 20, respectively, so that the heat exchangers between the two The vessels 17 and 18 are communicated with each other through a flow restriction pipe 21. The heat exchangers 17 and 18 function as a condenser and an evaporator, respectively, by switching the refrigerant fluid path.
The first heat exchanger 17 is arranged to exchange heat with indoor air, and the second heat exchanger 18 is arranged so as to exchange heat with outdoor air.
前記弁本体１２の軸方向の両端には開口縁を弁
座縁２２，２３とした吸込孔２４，２５が開口さ
れている。この吸込孔２４，２５はそれぞれ三方
切換弁２６の吸入口２７，２８に連通されてい
る。 Suction holes 24 and 25 are opened at both ends of the valve body 12 in the axial direction, and the opening edges thereof are valve seat edges 22 and 23. The suction holes 24 and 25 communicate with suction ports 27 and 28 of a three-way switching valve 26, respectively.
また、前記弁本体１２内には前記導出口１４と
通口１５，１６とを開口した弁座面２９が形成さ
れている。この弁座面２９は例えば合成樹脂にて
成形した摺動弁体３０が円滑に摺動されるように
平滑面に形成されている。この摺動弁体３０は自
己潤滑性を有するような合成樹脂にて成形されて
おり、弁座面２９を気密に摺動されるようになつ
ている。そして、この摺動弁体３０の弁座面２９
との摺動面３１は流体路３２を形成する凹部３３
が形成され、この凹部３３の開口面は摺動弁体３
０の摺動時に第１の通口１５と第２の通口１６の
全面が閉塞されるように両端を狭めて前記導出口
１４が導入口１３側に第１の通口１５または第２
の通口１６と凹部３３を介して連通されないよう
になつている。そして、この凹部３３の開口面は
長楕円形状をなし、さらに、開口面両端部に前記
第１の通口１５および前記第２の通口１６と略同
一の径をもつ円弧形状の突出部３４，３５が摺動
弁体３０の壁を厚くするように凹部３３内に向か
つて設けられている。 Further, a valve seat surface 29 is formed in the valve body 12 and opens the outlet port 14 and the ports 15 and 16. This valve seat surface 29 is formed into a smooth surface so that a sliding valve body 30 made of, for example, synthetic resin can slide smoothly. The sliding valve body 30 is made of a self-lubricating synthetic resin and is adapted to slide airtightly on the valve seat surface 29. Then, the valve seat surface 29 of this sliding valve body 30
The sliding surface 31 has a recess 33 forming a fluid path 32.
is formed, and the opening surface of this recess 33 is connected to the sliding valve body 3.
Both ends are narrowed so that the entire surfaces of the first port 15 and the second port 16 are closed when sliding the outlet port 14 toward the inlet port 13.
The opening 16 and the recess 33 do not allow communication between the opening 16 and the recess 33 . The opening surface of this recess 33 has an elongated oval shape, and furthermore, arc-shaped protrusions 34 having substantially the same diameter as the first port 15 and the second port 16 are provided at both ends of the opening surface. , 35 are provided toward the inside of the recess 33 so as to thicken the wall of the sliding valve body 30.
前記弁本体１２には前記摺動弁体３０を挟んで
両端側に一対の合成樹脂などにて成型したピスト
ン３６，３７が設けられ、この両ピストン３６，
３７はそれぞれ絞り孔３８を介して内外面が連通
されている。この両ピストン３６，３７は前記摺
動弁体３０を嵌合する係合部３９を形成した板状
の連結体４０にて連結されている。またこのピス
トン３６，３７には前記弁本体１２の両端弁座縁
２２，２３に接離する弁部４１，４２が形成され
ている。 The valve body 12 is provided with a pair of pistons 36 and 37 molded from synthetic resin or the like at both ends with the sliding valve body 30 in between.
37 have their inner and outer surfaces communicated through aperture holes 38, respectively. Both pistons 36 and 37 are connected by a plate-shaped connecting body 40 having an engaging portion 39 into which the sliding valve body 30 is fitted. Further, the pistons 36, 37 are formed with valve portions 41, 42 which come into contact with and separate from the valve seat edges 22, 23 at both ends of the valve body 12.
前記三方切換弁２６は管状に形成され、前記吸
入口２７，２８の中間に形成した吐出口４３は前
記弁本体１２の導出口１４に連通した導管４４に
導管４５にて連通されている。そして、この第１
の吸入口２７および第２の吸入口２８と吐出口４
３との連通部にそれぞれ弁座４６，４７が形成さ
れ、この一方の弁座４６に接離する第１の弁杆４
８は常時この弁座４６の閉塞側にスプリング４９
にて付勢され、他方の弁座４７に接離する第２の
弁杆５０は電磁コイル５１の吸引杆５２に連結さ
れ、スプリング５３にて弁座４７の閉塞側に付勢
されている。また、この両弁杆４８，５０はいず
れか一方がいずれか一方の弁座４６，４７を開放
するように突杆５４にて間隔を保持されている。 The three-way switching valve 26 is formed in a tubular shape, and a discharge port 43 formed between the suction ports 27 and 28 is communicated with a conduit 44 communicating with the outlet 14 of the valve body 12 through a conduit 45 . And this first
The suction port 27 and the second suction port 28 and the discharge port 4
Valve seats 46 and 47 are respectively formed in the communication portions with the first valve rod 4 and the first valve rod 4 that comes into contact with and separates from the one valve seat 46.
8 is a spring 49 always on the closed side of this valve seat 46.
The second valve rod 50, which is biased by the valve seat 47 and moves toward and away from the other valve seat 47, is connected to a suction rod 52 of an electromagnetic coil 51, and is biased by a spring 53 toward the closing side of the valve seat 47. Further, the two valve rods 48, 50 are maintained apart from each other by a protruding rod 54 so that either one of the valve seats 46, 47 can be opened.
なお、前記弁本体１２の導出口１４は導管５５
にて圧縮機１０の低圧側に接続され、弁本体１２
の吸込孔２４は三方切換弁２６の吸入口２７に導
管５６にて接続され、さらに、弁本体１２の吸込
孔２５は三方切換弁２６の吸入口２８に導管５７
にて接続されている。また、前記導入口１３は弁
本体１２側より漸次拡径形成されている。 Note that the outlet port 14 of the valve body 12 is connected to the conduit 55.
The valve body 12 is connected to the low pressure side of the compressor 10 at
The suction hole 24 of the valve body 12 is connected to the suction port 27 of the three-way switching valve 26 through a conduit 56, and the suction hole 25 of the valve body 12 is connected to the suction port 28 of the three-way switching valve 26 through a conduit 57.
It is connected at. Moreover, the diameter of the introduction port 13 is gradually increased from the valve body 12 side.
また、前記屋外側熱交換器１８と流量制限管２
１との間にリストリクタバルブ（図示しない）が
設けられ、暖房時には流体圧にて弁が接触閉塞
し、冷媒はバイパス回路であるヒーテイングキヤ
プラリーチユーブ（図示しない）を通過し、一
方、冷房時には、冷媒は流体圧にて開口している
弁より流動される。 In addition, the outdoor heat exchanger 18 and the flow rate restriction pipe 2
A restrictor valve (not shown) is provided between the refrigerant and the refrigerant, and during heating, the valve is contacted and closed by fluid pressure, and the refrigerant passes through a heating capillary tube (not shown), which is a bypass circuit. During cooling, the refrigerant is caused to flow through the open valve using fluid pressure.
次に、この実施例の作用について説明する。 Next, the operation of this embodiment will be explained.
第３図図示の電磁コイル５１を非励磁の状態と
し、第１の弁杆４８が一方の弁座４６を開き、第
２の弁座５０が他方の弁座４７を閉じ、弁本体１
２の一方の吸込孔２４側は導管５６、切換弁２６
の吸入口２７、吐出口４３、導管４５を経て弁本
体１２の低圧側導出口１４に接続した導管４４に
連通されて低圧となり、弁本体１２の吸込孔２４
を閉じるようにピストン３６は吸引され、このピ
ストン３６に連動する摺動弁体３０は第２の通口
１６を開き、導入口１３を第２の通口１６に連通
させるとともに導出口１４を第１の通口１５に凹
部３３を介して連通させる。この状態では圧縮機
１０よりの冷媒流体は導管１１、導入口１３、弁
本体１２、第２の通口１６、第２の屋外側熱交換
器１８、流量制限管２１、第１の熱交換器１７、
第１の通口１５、摺動弁体３０の凹部３３、導出
口１４、導管５５、圧縮機１０に循環される。こ
のとき、第２の屋外側熱交換器１８は凝縮器の作
用をなし、第１の屋内熱交換器１７は蒸発器とし
ての作用をなし、冷房作用となる。 The electromagnetic coil 51 shown in FIG. 3 is de-energized, the first valve rod 48 opens one valve seat 46, the second valve seat 50 closes the other valve seat 47, and the valve body 1
One suction hole 24 side of 2 is a conduit 56 and a switching valve 26
The suction port 27, the discharge port 43, and the conduit 45 connect to the conduit 44 connected to the low pressure side outlet 14 of the valve body 12, and the pressure becomes low.
The piston 36 is sucked so as to close the piston 36, and the sliding valve body 30 interlocked with the piston 36 opens the second port 16, making the inlet port 13 communicate with the second port 16 and connecting the outlet port 14 with the second port 16. 1 through the recess 33. In this state, the refrigerant fluid from the compressor 10 is transferred to the conduit 11, the inlet 13, the valve body 12, the second vent 16, the second outdoor heat exchanger 18, the flow rate restriction pipe 21, and the first heat exchanger. 17,
It is circulated through the first port 15, the recess 33 of the sliding valve body 30, the outlet 14, the conduit 55, and the compressor 10. At this time, the second outdoor heat exchanger 18 acts as a condenser, and the first indoor heat exchanger 17 acts as an evaporator, providing a cooling effect.
一方、この状態より電磁コイル５１を励磁する
と、第２の弁杆５０は弁座４７を開き、第１の弁
杆４８は弁座４６を閉じ、弁本体１２の導管４５
に連通されている吐出口４３は第２の吸入口２８
に連通され、この吸入口２８は導管５７を介して
弁本体１２の第２の吸込孔２５に連通され、第２
のピストン３７の絞り孔３８を介して高圧側とな
つていた第２の吸込孔２５側は導管５７側の流量
が絞り孔３８より流量が大きいため、この第２の
吸込孔２５側の圧力を低下させ、第２のピストン
３７を第２の吸込孔２５側に摺動させ、第１のピ
ストン３６の絞り孔３８より流体を第１の吸込孔
２４側に流入させ、圧力の平衡を保持するように
なつている。そして、このピストン３６，３７の
動作で摺動弁体３０は摺動され、第１の通口１５
を導入口１３に連通させ、第２の通口１６を導出
口１４に凹部３３を介して連通させ、熱交換器１
７，１８に流れる流体は先とは反対方向に流れ、
第２の室外側熱交換器１８は蒸発器の作用をな
し、第１の熱交換器１７は凝縮器の作用をなし、
例えば暖房運転となる。 On the other hand, when the electromagnetic coil 51 is excited from this state, the second valve lever 50 opens the valve seat 47, the first valve lever 48 closes the valve seat 46, and the conduit 45 of the valve body 12 opens.
The discharge port 43 communicated with the second suction port 28
This suction port 28 is connected to the second suction hole 25 of the valve body 12 via a conduit 57, and the second
Since the flow rate on the conduit 57 side is larger than the flow rate on the conduit 57 side, which is the high pressure side through the throttle hole 38 of the piston 37, the pressure on the second suction hole 25 side is reduced. the second piston 37 is slid toward the second suction hole 25 side, and the fluid flows into the first suction hole 24 side through the throttle hole 38 of the first piston 36 to maintain pressure balance. It's becoming like that. Then, the sliding valve body 30 is slid by the operation of the pistons 36 and 37, and the first passage 15 is moved.
is communicated with the inlet 13, the second outlet 16 is communicated with the outlet 14 via the recess 33, and the heat exchanger 1
The fluid flowing through 7 and 18 flows in the opposite direction,
The second outdoor heat exchanger 18 acts as an evaporator, the first heat exchanger 17 acts as a condenser,
For example, heating operation.
このように切換動作は電磁コイル５１による三
方切換弁２６の動作で行なわれる。 In this manner, the switching operation is performed by operating the three-way switching valve 26 using the electromagnetic coil 51.
そして、前記摺動弁体３０の摺動時において、
第６図のように、摺動弁体３０の中心軸線が導出
口１４の真上に一致する位置に来ても、第１の通
口１５および第２の通口１６の径と略同一の径を
もつ凹部３３の各突出部３４，３５が第１および
第２の通口１５，１６の導出口１４側の端部をふ
さぐので、導出口１４、第１の通口１５および第
２の通口１６のすべてが摺動弁体３０の凹部３３
を介して連通してしまうことはない。そのため、
導出口１４の両側に第１の通口１５および第２の
通口１６をかなり接近させて設けても、摺動弁体
３０の摺動時に導出口１４、第１の通口１５およ
び第２の通口１６のすべてが連通してしまうおそ
れはなく、切換弁自体を小型化できるものであ
る。 Then, when the sliding valve body 30 is sliding,
As shown in FIG. 6, even when the central axis of the sliding valve body 30 reaches a position directly above the outlet 14, the diameter is approximately the same as that of the first port 15 and the second port 16. Since each of the protrusions 34 and 35 of the concave portion 33 having a diameter closes the ends of the first and second ports 15 and 16 on the outlet port 14 side, the outlet ports 14, the first port 15, and the second port All of the vents 16 are located in the recess 33 of the sliding valve body 30.
There will be no communication via the . Therefore,
Even if the first port 15 and the second port 16 are provided on both sides of the outlet port 14 in close proximity to each other, the outlet port 14, the first port 15, and the second port There is no risk that all of the ports 16 will be in communication with each other, and the switching valve itself can be made smaller.
また、前記摺動弁体３０の切換後において、凹
部３３の突出部３４、３５によつて導出口１４と
第１の通口１４または第２の通口１６の開口面を
覆つてしまうのを最少限に抑えることができる。
すなわち、前記第２図の従来の構造と第５図の本
実施例の構造とを比較したものを第６図および第
７図に示して説明すると（なお、この図には本実
施例の符号を用いて表わすものに従来の凹部７を
想像線にて表わしている）、従来の摺動弁体の凹
部７の両縁部は、摺動弁体の摺動時に第６図よう
に両側通口１５，１６を閉塞できるように両側通
口１５，１６の対向する中央縁部位置ａを接線と
する直線状であり、そのため、両側通口１５，１
６の前記中央縁部位置ａよりも外側縁部域ｂの両
側通口１５，１６の閉塞に関係のない領域Ａによ
つて、第７図のように、導出口１４と第１の通口
１５または第２の通口１６を覆うことになり、一
方、本実施例の摺動弁体３０の凹部３３の両端部
の突出部３４，３５は、摺動弁体３０の摺動時に
両側通口１５，１６を最少限の突出領域で閉塞で
きるように両側通口１５，１６と略同一径の円弧
形状であるため、両突出部３４，３５の対向する
中央縁部位置ａの凹部３３内への突出寸法は従来
と同じであるが、両突出部３４，３５の外側縁部
域ｂは凹部３３の外側に向つて広がつており、し
たがつて、この凹部３３が広がつた分すなわち領
域Ａの分だけ導出口１４と第１の通口１５または
第２の通口１６の開口面積を広くすることがで
き、流体の圧力損失を減少できる。 Furthermore, after the sliding valve body 30 is switched, the protrusions 34 and 35 of the recess 33 are prevented from covering the outlet 14 and the opening surfaces of the first or second passage 14 or 16. can be kept to a minimum.
That is, a comparison between the conventional structure shown in FIG. 2 and the structure of the present embodiment shown in FIG. 5 will be explained with reference to FIGS. 6 and 7. (The conventional recess 7 is shown with imaginary lines), both edges of the recess 7 of the conventional sliding valve body are open on both sides as shown in Fig. 6 when the sliding valve body slides. In order to close the openings 15 and 16, the openings 15 and 16 have a straight line whose tangent is the central edge position a where the openings 15 and 16 face each other.
As shown in FIG. 7, the outlet port 14 and the first port On the other hand, the protrusions 34 and 35 at both ends of the recess 33 of the sliding valve body 30 of this embodiment cover the second passage 16 when the sliding valve body 30 slides. Since the openings 15 and 16 have an arcuate shape with approximately the same diameter as the openings 15 and 16 on both sides so that the openings 15 and 16 can be closed with a minimum protruding area, the inside of the recess 33 at the center edge position a where both the projections 34 and 35 face each other. Although the protrusion dimensions are the same as in the conventional case, the outer edge areas b of both protrusions 34 and 35 widen toward the outside of the recess 33, and therefore, as the recess 33 widens, The opening area of the outlet port 14 and the first or second port 15 or 16 can be increased by the area A, and the pressure loss of the fluid can be reduced.
本考案によれば、摺動弁体の凹部の長手方向両
端部に摺動弁体の摺動時に第１および第２の通口
を閉塞する突出部を備え、この突出部を、前記第
１および第２の通口を閉塞可能とする最少限の形
状すなわち第１および第２の通口の開口縁形状と
略同一の形状にしたので、摺動弁体の切換後に前
記突出部によつて導出口と第１の通口または第２
の通口の開口面を覆うのを最少限に抑えることが
でき、したがつて、摺動弁体の凹部による導出口
と第１の通口または第２の通口の開口面積を、前
記摺動弁体の摺動時に第１および第２の通口を閉
塞できる構造を採用した上で最大限に広くするこ
とができ、流体の流動低抗が少なくなり圧力損失
が減少し、例えば冷凍サイクルに用いた場合に熱
効率と高めて冷房あるいは暖房効果をいちだんと
高めることができる。
According to the present invention, the protruding portions are provided at both longitudinal ends of the recess of the sliding valve body to close the first and second ports when the sliding valve body slides, and the protruding portions are connected to the first and second ports. Since the second port has the minimum shape that allows it to be closed, that is, the shape is approximately the same as the opening edge shape of the first and second ports, the protrusion can close the second port after switching the sliding valve body. Outlet and first or second outlet
Therefore, the opening area of the outlet and the first or second port by the recess of the sliding valve body can be minimized. By adopting a structure that can close the first and second ports when the valve body slides, it is possible to make them as wide as possible, reducing fluid flow resistance and reducing pressure loss, for example in a refrigeration cycle. When used for air conditioning, the thermal efficiency can be increased and the cooling or heating effect can be further enhanced.
第１図は従来の切換弁の弁座および摺動弁体の
断面図、第２図はその平面図、第３図は本考案の
一実施例を示す冷暖房装置に実施した切換弁の断
面図、第４図はこの実施例に係る摺動弁体の底面
図、第５図はこの実施例の切換弁の弁座および摺
動弁体の平面図、第６図および第７図は本実施例
と従来との比較を示す切換弁の弁座および摺動弁
体の一部を切欠いて拡大した平面図を示すもので
ある。
１２……弁本体、１４……導出口、１５……第
１の通口、１６……第２の通口、２９……弁座
面、３０……摺動弁体、３１……摺動面、３２…
…流体路、３３……凹部、３４，３５……突出
部。
Fig. 1 is a sectional view of the valve seat and sliding valve body of a conventional switching valve, Fig. 2 is a plan view thereof, and Fig. 3 is a sectional view of a switching valve implemented in an air-conditioning system according to an embodiment of the present invention. , FIG. 4 is a bottom view of the sliding valve body according to this embodiment, FIG. 5 is a plan view of the valve seat and sliding valve body of the switching valve of this embodiment, and FIGS. 6 and 7 are views of the present embodiment. FIG. 2 is a partially cutaway and enlarged plan view of a valve seat and a sliding valve body of a switching valve, showing a comparison between the example and the conventional one. 12... Valve body, 14... Outlet, 15... First port, 16... Second port, 29... Valve seat surface, 30... Sliding valve body, 31... Sliding Face, 32...
...fluid path, 33... recess, 34, 35... protrusion.
Claims (1)
位置して第１の通口および第２の通口をそれぞれ
開口し、この導出口を両側通口のいずれか一方の
みに選択的に連通させる摺動弁体を前記弁本体の
弁座面に摺動自在に設け、 前記摺動弁体は、前記弁座面と擦れ合う摺動面
に前記導出口と両側通口のいずれか一方とを連通
させる流体路を形成する凹部が切換方向に長く穿
設され、この凹部の長手方向両端部に、摺動弁体
の摺動時に前記第１および第２の通口を閉塞可能
とする必要最少限の形状である前記第１および第
２の通口と略同一径の円弧形状の突出部を設けた
ことを特徴とする切換弁。[Claims for Utility Model Registration] An outlet port is provided on the valve seat surface of the valve body, and a first port and a second port are opened on both sides of the outlet port. A sliding valve body is slidably provided on the valve seat surface of the valve body, and the sliding valve body selectively communicates with only one of the valve seats. A recessed portion forming a fluid path that communicates with one of the two side ports is formed long in the switching direction, and at both longitudinal ends of the recessed portion, when the sliding valve body slides, the first and second 1. A switching valve comprising an arc-shaped protrusion having a diameter substantially the same as that of the first and second ports, which is the minimum necessary shape to enable closing of the first and second ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4001483U JPS59146661U (en) | 1983-03-18 | 1983-03-18 | switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4001483U JPS59146661U (en) | 1983-03-18 | 1983-03-18 | switching valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59146661U JPS59146661U (en) | 1984-10-01 |
| JPS6312282Y2 true JPS6312282Y2 (en) | 1988-04-08 |
Family
ID=30170647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4001483U Granted JPS59146661U (en) | 1983-03-18 | 1983-03-18 | switching valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59146661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017075675A (en) * | 2015-10-16 | 2017-04-20 | 株式会社鷺宮製作所 | Slide type selector valve and refrigeration cycle system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008170012A (en) * | 2008-03-21 | 2008-07-24 | Mitsubishi Electric Corp | Functional part, its manufacturing method and refrigerating/air-conditioning device using the part |
| JP6254980B2 (en) * | 2015-08-07 | 2017-12-27 | 株式会社鷺宮製作所 | Sliding switching valve and refrigeration cycle system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50129926U (en) * | 1974-04-08 | 1975-10-24 |
-
1983
- 1983-03-18 JP JP4001483U patent/JPS59146661U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017075675A (en) * | 2015-10-16 | 2017-04-20 | 株式会社鷺宮製作所 | Slide type selector valve and refrigeration cycle system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59146661U (en) | 1984-10-01 |
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