JPH0715313B2 - Four-way valve for refrigeration cycle - Google Patents
Four-way valve for refrigeration cycleInfo
- Publication number
- JPH0715313B2 JPH0715313B2 JP60251466A JP25146685A JPH0715313B2 JP H0715313 B2 JPH0715313 B2 JP H0715313B2 JP 60251466 A JP60251466 A JP 60251466A JP 25146685 A JP25146685 A JP 25146685A JP H0715313 B2 JPH0715313 B2 JP H0715313B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- seat
- cylinder
- slider member
- ring
- 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 - Lifetime
Links
Classifications
-
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は冷凍サイクル、特にヒートポンプ型の空調機の
冷房・暖房の切換に用いる冷凍サイクル用四方弁に関す
るものである。TECHNICAL FIELD The present invention relates to a refrigeration cycle, and more particularly to a four-way valve for a refrigeration cycle used for switching between cooling and heating of a heat pump type air conditioner.
従来の技術 近年、冷凍サイクル四方弁は、空調機のヒートポンプ化
が進むにつれて、その需要は急増しており、小型化，低
コスト化の要求が強くなっている。2. Description of the Related Art In recent years, the demand for refrigeration cycle four-way valves has increased rapidly as the use of air conditioners as heat pumps has increased, and there is a strong demand for downsizing and cost reduction.
以下、図面を参照しながら、従来の冷凍サイクル用四方
弁の一例について説明する。Hereinafter, an example of a conventional four-way valve for a refrigeration cycle will be described with reference to the drawings.
第５図は、従来の冷凍サイクル用四方弁の断面を示すも
のである。１は密閉された円筒状弁本体、2,3は前記弁
本体の周面の両側に反対方向に接続された吐出管と吸入
管、4,5は前記吸入管３を中央にして両側に設けられた
第一，第二の導管であり、第一の導管４は室内側熱交換
器（以下“室内器”）（図示せず）に接続され、第二の
導管５は室外側熱交換器（以下“室外器”）（図示せ
ず）に接続されている。上記４接続管2,3,4,5はそれぞ
れ弁本体１内に開口しており、並設した３接続管3,4,5
の開口端は弁本体１の軸方向に面一にシート６で弁本体
１に固定されている。７は前記弁本体の内部にあって前
記シート６面を軸方向に摺動する摺動弁であり、前記吸
入管３と第一の導管４、又は吸入管３と第二の導管５を
択一的に連通せしめるＵ字状の凹面7aを有している。8,
9は前記摺動弁７の両側に連結板10で連結されて配設さ
れ微小孔8a,9aを有するピストン体である。11,12は前記
弁本体１の端面を密封する蓋である。13,14は前記蓋11,
12の間の空間R1,R2に開口し、電磁式パイロットバルブ1
5の通電操作により前記吸入管３と択一的に切換連通し
て低圧ガスを導入する抽気管である。FIG. 5 shows a cross section of a conventional four-way valve for a refrigeration cycle. 1 is a sealed cylindrical valve body, 2 and 3 are discharge pipes and suction pipes connected in opposite directions on both sides of the peripheral surface of the valve body, and 4,5 are provided on both sides with the suction pipe 3 as the center First and second conduits, the first conduit 4 is connected to an indoor heat exchanger (hereinafter "indoor unit") (not shown), and the second conduit 5 is an outdoor heat exchanger. (Hereinafter referred to as “outdoor unit”) (not shown). The above-mentioned 4 connecting pipes 2, 3, 4 are opened in the valve body 1 respectively, and 3 connecting pipes 3, 4, 5 arranged in parallel are provided.
The open end of the valve is fixed to the valve body 1 with a seat 6 so as to be flush with the valve body 1 in the axial direction. Reference numeral 7 is a slide valve inside the valve body that slides axially on the surface of the seat 6, and selects the suction pipe 3 and the first conduit 4 or the suction pipe 3 and the second conduit 5. It has a U-shaped concave surface 7a that allows them to communicate with each other. 8,
Reference numeral 9 denotes a piston body which is arranged on both sides of the sliding valve 7 by connecting plates 10 and which has minute holes 8a and 9a. Reference numerals 11 and 12 are lids for sealing the end surface of the valve body 1. 13,14 is the lid 11,
Open in the spaces R 1 and R 2 between 12 and the electromagnetic pilot valve 1
It is an extraction pipe for introducing low pressure gas by selectively switching and communicating with the suction pipe 3 by the energization operation of 5.
以上のように構成された冷凍サイクル用四方弁について
その動作を説明する。The operation of the four-way valve for the refrigeration cycle configured as above will be described.
電磁式パイロットバルブ15の通電操作により抽気管13,1
4を介して空間R1，あるいは空間R2と吸入管３を択一的
に連通して空間内圧力を低下させるとともにピストン体
8,9の微小孔8a,9aを介して弁本体１内の吐出側圧力を反
対側の空間に導入して高圧とすることにより、両空間の
高低圧力差でピストン体8,9に連結する摺動弁７を移動
させ、吐出管２より導入される高圧冷媒を第二の導管と
連通させて室内器を凝縮器として用いて室内を暖房し、
又は高圧冷媒を第一の導管４と連通させて室外器を凝縮
器に、室内器を蒸発器として室内を冷房するものであ
る。Bleed pipe 13,1 by energizing electromagnetic pilot valve 15
The space R 1 or the space R 2 and the suction pipe 3 are selectively communicated with each other via 4 to reduce the pressure in the space and to form the piston body.
The pressure on the discharge side in the valve body 1 is introduced into the space on the opposite side through the small holes 8a, 9a of 8, 9 to make it a high pressure, and the piston body 8, 9 is connected by the pressure difference between the two spaces. The sliding valve 7 is moved, the high-pressure refrigerant introduced from the discharge pipe 2 is communicated with the second conduit, and the indoor unit is used as a condenser to heat the room,
Alternatively, the high pressure refrigerant is communicated with the first conduit 4 to cool the room by using the outdoor unit as a condenser and the indoor unit as an evaporator.
発明が解決しようとする問題点 しかしながら上記の構成では、電磁式パイロットバルブ
15の作動により高低圧の圧力変換を行い、その圧力差に
よって弁を切換えているためパイロットバルブ15そのも
のの付帯が不可欠であり構造複雑でコストが非常に高
く、又、弁本体１も大きく暖房時の弁本体１での熱損失
が大きく、システムの暖房能力を大きく低下させてい
た。また、本体弁１の外に弁機構が数箇所もあり弁もれ
不良が問題となっていた。更にパイロットバルブ15と弁
本体１が抽気管13,14で接続されているため接続箇所が
多くコスト高とガス洩れの恐れを招いていた。また弁の
作動は圧力差によって切換わるものでるため圧力差のな
い状態では作動不可となり、ある一定の圧力差を必要と
するもので空調機等が必ず運転しなければ切換ができず
切換初期における運転ロスを生じていた。さらに、シリ
ンダ内で弁体を往復動させて流通路を切換えるようにソ
レノイドによる駆動源を用いたもの等はその弁体が複雑
な構造をしていたり、弁体内部の流路断面積が小さく
て、弁全体を大きくしなければならない等の難点があっ
た。Problems to be Solved by the Invention However, in the above configuration, the electromagnetic pilot valve is used.
High and low pressure conversion is performed by the operation of 15, and the valve is switched by the pressure difference, so it is indispensable to attach the pilot valve 15 itself, the structure is complicated and the cost is very high, and the valve body 1 is also large during heating. The heat loss in the valve body 1 was large, and the heating capacity of the system was greatly reduced. In addition, there are several valve mechanisms outside the main body valve 1, which causes a problem of valve leakage. Furthermore, since the pilot valve 15 and the valve body 1 are connected by the bleed pipes 13 and 14, there are many connection points, which causes high cost and gas leakage. Also, since the valve operation is switched depending on the pressure difference, it cannot be operated in the state where there is no pressure difference, and it requires a certain pressure difference and cannot be switched unless the air conditioner or the like is in operation. There was a driving loss. Further, in the case where a solenoid drive source is used to reciprocate the valve element in the cylinder to switch the flow passage, the valve element has a complicated structure, or the flow passage cross-sectional area inside the valve element is small. Then, there was a problem that the whole valve had to be enlarged.
本発明は上記問題点に鑑み、低コストでシンプル構造の
パイロットバルブレス型で、しかも切換作動の信頼性が
高く、更に暖房時弁体での熱損失の小さい冷凍サイクル
用四方弁を提供するものである。In view of the above problems, the present invention provides a four-way valve for a refrigeration cycle, which is a low-cost, simple-structure pilot valveless type, has high switching operation reliability, and has a small heat loss in the valve element during heating. is there.
問題点を解決するための手段 上記問題点を解決するために本発明の冷凍サイクル用四
方弁は、弁本体を形成するシリンダと、前記シリンダの
内壁に平滑なシート面を平行に対向させて固定した一対
のバルブシートと、前記一対のバルブシートのうちの一
方のバルブシートに設けた導出口と、前記一対のバルブ
シートのうちの他方のバルブシートに並設した第一と第
二の通口と、前記相対向する一対のバルブシート間にあ
ってかつ前記導出口ならびに第一、第二の通口に直交す
る位置のシリンダ側壁に設けた導入口と、前記相対向す
る一対のバルブシート間にあって前記シリンダ内をその
軸方向に移動して前記導出口と第一あるいは第二通口と
を択一的に連通させる楕円筒形のスライダ部材と、前記
スライダ部材をシリンダ内で往復動させる駆動源とを備
え、前記スライダ部材はシリンダ軸方向に長い楕円形状
をなしバルブシートのシート面に夫々相対する一対のス
ライドシートリングを備える構成としたものである。Means for Solving the Problems In order to solve the above problems, a four-way valve for a refrigeration cycle according to the present invention is a cylinder that forms a valve body, and a smooth seat surface is fixed in parallel to the inner wall of the cylinder. A pair of valve seats, a lead-out port provided in one valve seat of the pair of valve seats, and a first and a second port provided in parallel with the other valve seat of the pair of valve seats And between the pair of valve seats facing each other and the inlet provided on the cylinder side wall at a position orthogonal to the outlet and the first and second passages, and between the pair of valve seats facing each other. An elliptic cylindrical slider member that moves in the cylinder in the axial direction to selectively connect the outlet and the first or second passage, and a drive that reciprocates the slider member in the cylinder. And a pair of slide seat rings facing each other to the seat surface of the valve seat, the slider member having an elliptical shape elongated in the cylinder axis direction.
そしてさらに、前記構成に加えてスライダ部材を夫々ス
ライドシートリングを有しかつ楕円形状に形成したリン
グ状の第一と第二のスライダに分割し、前記第一と第二
のスライダは夫々が有する嵌合用段部で嵌合して一体と
し、その嵌合部にはスライダ部材の周縁側部においてス
ライダ部材内部と外部間をシールするシールリングを配
設し、前記第一のスライダのスライドシートリングのリ
ング状の開口面をシリンダ内の一方のバルブシートのシ
ート面に、第二のスライダのスライドシートリングのリ
ング状の開口面をシリンダ内の他方のバルブシートのシ
ート面に夫々附勢して押しあてる板バネを前記第一と第
二のスライダ間に介在させる構成としたものである。Further, in addition to the above configuration, the slider member is divided into ring-shaped first and second sliders each having a slide seat ring and formed in an elliptical shape, and each of the first and second sliders has The slide seat ring of the first slider is provided with a seal ring that seals between the inside and the outside of the slider member at the peripheral edge of the slider member at the fitting step. The ring-shaped opening of the valve seat on one valve seat in the cylinder, and the ring-shaped opening of the slide seat ring of the second slider on the seat surface of the other valve seat in the cylinder. A pressing leaf spring is interposed between the first and second sliders.
作用 本発明は上記した構成によってシステムの高低差圧が楕
円筒形中空導孔のスライダ部材内外に加わってもスライ
ダ部材はその圧力差により附勢力を受けずに中立点に保
持されるためスライドシートリングがシールを行うため
に必要な面圧に抗するだけのわずかな力でスライダ部材
をシリンダ軸方向に移動できるため切換所要力を大幅に
低減できることから、弁切換を従来の如くパイロットバ
ルブ機構を用いなくても可能となり、大幅な低コスト化
とシンプル化，作動信頼性向上が図れるとともに、スラ
イダシートリングはリング状であって、かつシリンダ軸
方向に長い楕円形状とし、スライド部材を同一方向の楕
円筒形とすることによりリング形状の上下面に形成され
る広い開口面が流路となるからスライダ部材内部の流路
断面積を大きくとりながら、バルブシートの幅を狭くす
ることができ、シリンダ径を小さくでき弁体の小型化が
図れるものである。The present invention has the above-described structure, and even if the differential pressure of the system is applied to the inside and outside of the slider member of the elliptic cylindrical hollow guide hole, the slider member is not subjected to the urging force due to the pressure difference and is held at the neutral point. Since the slider member can be moved in the cylinder axis direction with a slight force that resists the surface pressure required for the ring to seal, the required switching force can be greatly reduced. It is possible without using it, and the cost and simplification are greatly improved, and the operational reliability is improved. The slider seat ring is ring-shaped and has an elliptical shape elongated in the cylinder axis direction, and the slide member is When the elliptic cylinder is used, the wide opening surfaces formed on the upper and lower surfaces of the ring shape serve as the flow passages, so the flow passage cross-sectional area inside the slider member is increased. While taking off, the width of the valve seat can be made narrower, the cylinder diameter can be made smaller, and the valve body can be made smaller.
実施例 以下、本発明の一実施例の冷凍サイクル四方弁について
図面を参照しながら説明する。第１図は本発明の一実施
例における冷凍サイクル用四方弁の非通電時の断面図を
示すものである。16は弁本体を形成するシリンダで側面
に圧縮機の吐出側に接続される吐出パイプ17の導入口17
aが開口している。18は前記シリンダ16の一端16aに嵌合
溶接された蓋である。19,20は前記シリンダ16の内壁に
シート面19a,20aを互いに平行に対向させて固定した第
一，第二のバルブシートであり、第一のバルブシート19
には圧縮機の吸入側に接続される吸入パイプ21の導出口
19bが開口している。又、第二のバルブシート20には、
各々凝縮器又は蒸発器として可逆的に機能する室外コイ
ル，室内コイルに接続される第一，第二の接続パイプ2
2,23が開口される第一，第二の通口20b,20cがシリンダ1
6の軸方向に並設口されている。24,25はそれぞれの嵌合
用段部24a,25aにより互いに嵌合し楕円筒形のスライダ
部材26を構成する第一，第二のスライダであり、第一，
第二のバルブシート19,20の各シート面19a,20aの間に位
置し楕円の長軸方向をシリンダ16の軸方向に一致して配
設している。前記第一，第二のスライダ24,25の非嵌合
側端部の外側段部24b,25bには、同一形状の楕円形スラ
イドシートリング27,28が接合係止されている。29はシ
ールリングで略Ｖ字状の断面形状をしており、前記第
一，第二のスライダ24,25の嵌合用段部24a,25aの間に介
在して前記スライドシートリング27,28とともに前記第
一，第二のスライダ24,25で形成される楕円筒形のスラ
イダ部材26内外をシールしている。30は楕円で波形をし
た板バネであり、前記第一，第二のスライダ24,25間に
介在して各スライダをそれぞれ第一，第二のバルブシー
ト19,20の各シート面19a,20a側へ押しあてる方向に附勢
している。31は前記シリンダ16の他端を閉塞する蓋であ
る。32は前記蓋31の中央に固定的に取り付けられた操作
用ソレノイド（駆動源）であり、固定鉄心33、電磁コイ
ル34、復帰バネ35、そして前記第一のスライダ24と連結
されたプランジャ36より構成されており、電磁コイル34
への通電制御により前記第一，第二のスライダ24、25に
より成るスライダ部材26が前記シリンダ16内を軸方向に
摺動する。そして前記スライダ部材26の両端に設けられ
た前記スライドシートリング27,28の位置は、第１図図
示のスライダ部材26の第一の位置（電磁コイル34無通
電）において前記導出口19bと第一の通口20bを連通さ
せ、電磁コイル34の通電により前記プランジャ36及びス
ライダ部材26を吸引した第二の位置（第４図）において
前記導出口19bと第二の通口20cを連通させる如く設計さ
れている。Embodiment A refrigeration cycle four-way valve according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross-sectional view of a four-way valve for a refrigeration cycle in a non-energized state according to an embodiment of the present invention. Reference numeral 16 is a cylinder forming a valve body, and an inlet 17 of a discharge pipe 17 which is connected to the discharge side of the compressor on the side surface.
a is open. Reference numeral 18 is a lid fitted and welded to one end 16a of the cylinder 16. Reference numerals 19 and 20 denote first and second valve seats having seat surfaces 19a and 20a fixed to the inner wall of the cylinder 16 so as to face each other in parallel to each other.
At the outlet of the suction pipe 21 connected to the suction side of the compressor
19b is open. Also, in the second valve seat 20,
First and second connection pipes 2 connected to an outdoor coil and an indoor coil, which reversibly function as a condenser or an evaporator, respectively.
The first and second passages 20b and 20c, in which the openings 2 and 23 are opened, are the cylinder 1
6 are installed side by side in the axial direction. Reference numerals 24 and 25 denote first and second sliders that are fitted to each other by the fitting step portions 24a and 25a to form an elliptic cylindrical slider member 26.
It is located between the seat surfaces 19a, 20a of the second valve seats 19, 20 and is arranged so that the major axis direction of the ellipse coincides with the axial direction of the cylinder 16. Elliptical slide seat rings 27, 28 of the same shape are joined and locked to the outer step portions 24b, 25b at the non-fitting side ends of the first and second sliders 24, 25. Reference numeral 29 is a seal ring having a substantially V-shaped cross section, and is interposed between the fitting step portions 24a, 25a of the first and second sliders 24, 25 together with the slide seat rings 27, 28. The inside and outside of the slider member 26 formed of the first and second sliders 24 and 25 and having an elliptic cylinder shape is sealed. Reference numeral 30 denotes an elliptic corrugated leaf spring, which is interposed between the first and second sliders 24 and 25 to attach the sliders to the seat surfaces 19a and 20a of the first and second valve seats 19 and 20, respectively. It is urged in the direction of pushing it to the side. Reference numeral 31 is a lid that closes the other end of the cylinder 16. Reference numeral 32 denotes an operation solenoid (driving source) fixedly attached to the center of the lid 31, and includes a fixed iron core 33, an electromagnetic coil 34, a return spring 35, and a plunger 36 connected to the first slider 24. Consists of an electromagnetic coil 34
A slider member 26 including the first and second sliders 24 and 25 slides in the cylinder 16 in the axial direction by controlling the energization of the slider. The positions of the slide seat rings 27 and 28 provided at both ends of the slider member 26 are the same as the lead-out port 19b and the first position at the first position of the slider member 26 shown in FIG. Is designed so that the outlet port 19b and the second outlet port 20c are communicated with each other at the second position (FIG. 4) where the plunger 36 and the slider member 26 are attracted by the energization of the electromagnetic coil 34. Has been done.
以上のように構成された冷凍サイクル用四方弁について
以下第１図〜第４図を用いてその動作を説明する。第１
図〜第３図は電磁コイル34の非通電時における態様を示
したもので、プランジャ36は復帰バネ35の作用により図
の左方に附勢されてスライダ部材26が蓋18に当接して止
まる。この結果、スライダ部材26により導出口19bと第
一の通口20bが連通され、一方導入口17aと第二の通口20
cもシリンダ16の内部を通して連通される。従って冷媒
ガスは、圧縮機→吐出パイプ17→第一の接続パイプ22→
室外コイル→膨張弁→室内コイル→第二の接続パイプ23
→吸入パイプ21→圧縮機の冷房サイクル回路となる。The operation of the four-way valve for a refrigeration cycle configured as described above will be described below with reference to FIGS. 1 to 4. First
FIGS. 3 to 3 show a mode in which the electromagnetic coil 34 is not energized. The plunger 36 is biased to the left by the action of the return spring 35 so that the slider member 26 abuts on the lid 18 and stops. . As a result, the slider member 26 connects the outlet 19b and the first passage 20b, while the inlet 17a and the second passage 20 are connected.
c is also communicated through the inside of the cylinder 16. Therefore, the refrigerant gas is compressor → discharge pipe 17 → first connecting pipe 22 →
Outdoor coil → expansion valve → indoor coil → second connecting pipe 23
→ Suction pipe 21 → Compressor cooling cycle circuit.
次に電磁コイル34を通電状態にすると（第４図）、プラ
ンジャ36は固定鉄心33に吸着され、スライダ部材26が蓋
31に当接して止まる。この結果、スライダ部材により導
出口19bと第二の通口20cが連通され、一方、導入口17a
と第一の通口20bもシリンダ16の内部を通して連通され
る。従って冷媒ガスは圧縮機→吐出パイプ17→第二の接
続パイプ23→室内コイル→膨張弁→室外コイル→第一の
接続パイプ22→吸入パイプ21→圧縮機の暖房サイクル回
路となる。Next, when the electromagnetic coil 34 is turned on (FIG. 4), the plunger 36 is attracted to the fixed iron core 33 and the slider member 26 is closed.
Abut 31 and stop. As a result, the slider member connects the outlet 19b and the second passage 20c, while the inlet 17a is provided.
And the first communication port 20b are also communicated with each other through the inside of the cylinder 16. Therefore, the refrigerant gas goes from the compressor → the discharge pipe 17 → the second connection pipe 23 → the indoor coil → the expansion valve → the outdoor coil → the first connection pipe 22 → the suction pipe 21 → the heating cycle circuit of the compressor.
以上のように本実施例によれば、シリンダ内にそのシー
ト面を平行に固定し、各々導出口及び第一，第二の通口
を有する一対のバルブシートを有し、両端に前記バルブ
シートに当接してシールする前記シリンダの軸方向に長
い楕円形状の一対のスライドシートリングを設けた楕円
筒形のスライダ部材を配設し、そのスライダ部材をシリ
ンダの軸方向に摺動することにより、導出口と連通され
る通口を選択し冷媒回路を切換える構成としたことによ
り、スライダ部材は圧力差を受けずに中立点に保持され
るためスライドシートリングがシールを行うために必要
な面圧に抗するだけのわずかな力でスライダ部材を摺動
できるため切換所要力が大幅に低減できることから、弁
切換を従来の如くパイロットバルブ機構を用いなくても
可能となり、シンプル構造とでき、大幅な低コスト化と
作動信頼性向上が図れると共に、スライドシートリング
及び筒形スライダをシリンダの軸方向に長い楕円形状と
することによりスライダ部材内部の流路断面積を大きく
とりながらバルブシートの幅を狭くすることができ、シ
リンダ径を小さくでき、弁体の小型化が図れ、弁体での
熱損失が軽減され、システムの暖房能力の向上にも寄与
できる。As described above, according to the present embodiment, the seat surface is fixed in parallel in the cylinder, and the pair of valve seats each having the outlet and the first and second through holes are provided, and the valve seats are provided at both ends. By disposing an elliptic cylindrical slider member provided with a pair of sliding seat rings of an elliptical shape long in the axial direction of the cylinder that abuts against and seals, by sliding the slider member in the axial direction of the cylinder, By selecting the communication port that communicates with the outlet port and switching the refrigerant circuit, the slider member is held at the neutral point without receiving a pressure difference, so the surface pressure required for the slide seat ring to seal. Since the slider member can be slid with a slight force only against the pressure, the required switching force can be greatly reduced, so valve switching can be performed without using a pilot valve mechanism as in the past. In addition to achieving a large cost reduction and improved operational reliability, the slide seat ring and the tubular slider have an elliptical shape that is long in the axial direction of the cylinder to increase the flow passage cross-sectional area inside the slider member. However, the width of the valve seat can be narrowed, the cylinder diameter can be reduced, the valve body can be downsized, heat loss in the valve body can be reduced, and the heating capacity of the system can be improved.
発明の効果 以上のように本発明は、単にリング形状で長い楕円筒形
のスライダ部材をシリンダ内で往復動させて流路を切り
換えるものであるから、スライダ部材が極めて動き易い
リング状であって、しかもその上下面に必然的に形成さ
れる開口面が広くて、これがスライダ部材内の流路断面
になって、従来の様な弁本体に穿設などによって形成さ
れる流路よりも遥かに流路断面積が大きい。従って上記
の理由によってシリンダを含む弁全体を小さくすること
ができる。又特許請求の範囲第２項に示す構成によるも
のは、バルブシートのシート面に、夫々第一と第二のス
ライダが備えているスライドシートリングの開口面を板
バネで押しあてる為このバルブシートのシート面とスラ
イダとの間から流体の漏洩がないので、四方弁として効
率的で、弁体小型化が図れ、暖房時の弁体での熱損失が
軽減され、システムの暖房能力の向上も実現できるもの
である。EFFECTS OF THE INVENTION As described above, according to the present invention, since the long and elliptic cylindrical slider member is simply reciprocated in the cylinder to switch the flow path, the slider member has a ring shape that is extremely easy to move. In addition, the opening surfaces that are inevitably formed on the upper and lower surfaces are wide, and this is the flow passage cross section in the slider member, which is much larger than the flow passage formed by drilling in the valve body as in the past. The flow path cross section is large. Therefore, the entire valve including the cylinder can be made small for the above reason. The valve seat according to the second aspect of the present invention uses the leaf seat to press the opening surfaces of the slide seat rings provided in the first and second sliders against the seat surface of the valve seat, respectively. Since there is no fluid leakage between the seat surface and the slider, it is efficient as a four-way valve, the valve body can be downsized, the heat loss in the valve body during heating can be reduced, and the heating capacity of the system can be improved. It can be realized.
第１図は本発明における冷凍サイクル用四方弁の冷房状
態を示す断面図、第２図は第１図のＸ−Ｘ′方向中央断
面図、第３図は第１図の弁切換機構要部斜視図、第４図
は第１図の暖房状態を示す断面図、第５図は従来の冷凍
サイクル用四方弁を示す断面図である。 16……シリンダ、19,20……第一，第二のバルブシー
ト、24,25……第一，第二のスライダ、26……スライダ
部材、27,28……スライドシートリング、29……シート
リング、30……板バネ、32……駆動源（ソレノイド）。FIG. 1 is a sectional view showing a cooling state of a four-way valve for a refrigeration cycle according to the present invention, FIG. 2 is a central sectional view in the XX 'direction of FIG. 1, and FIG. 3 is a main part of a valve switching mechanism of FIG. FIG. 4 is a perspective view, FIG. 4 is a sectional view showing a heating state of FIG. 1, and FIG. 5 is a sectional view showing a conventional four-way valve for a refrigeration cycle. 16 …… Cylinder, 19,20 …… First and second valve seats, 24,25 …… First and second sliders, 26 …… Slider member, 27,28 …… Slide seat ring, 29 …… Seat ring, 30 …… leaf spring, 32 …… drive source (solenoid).
Claims (2)
ダの内壁に平滑なシート面を平行に対向させて固定した
一対のバルブシートと、前記一対のバルブシートのうち
の一方のバルブシートに設けた導出口と、前記一対のバ
ルブシートのうちの他方のバルブシートに並設した第一
と第二の通口と、前記相対向する一対のバルブシート間
にあってかつ前記導出口ならびに第一、第二の通口に直
交する位置のシリンダ側壁に設けた導入口と、前記相対
向する一対のバルブシート間にあって前記シリンダ内を
その軸方向に移動して前記導出口と第一あるいは第二通
口とを択一的に連通させる楕円筒形のスライダ部材と、
前記スライダ部材をシリンダ内で往復動させる駆動源と
を備え、前記スライダ部材はシリンダ軸方向に長い楕円
形状をなしバルブシートのシート面に夫々相対する一対
のスライドシートリングを備えたことを特徴とする冷凍
サイクル用四方弁。1. A cylinder for forming a valve body, a pair of valve seats having smooth seat surfaces parallel to and fixed to an inner wall of the cylinder, and a valve seat of one of the pair of valve seats. And a first and second through-holes arranged side by side on the other valve seat of the pair of valve seats, and between the pair of valve seats facing each other and the outlet and the first, second An inlet provided on the side wall of the cylinder at a position orthogonal to the second inlet, and between the pair of valve seats facing each other, and moving in the cylinder in the axial direction thereof, and the outlet and the first or second inlet. An elliptic cylindrical slider member that selectively communicates with,
A drive source for reciprocating the slider member in a cylinder, the slider member having an elliptical shape elongated in the cylinder axial direction, and a pair of slide seat rings facing each other on the seat surface of the valve seat, A four-way valve for a refrigeration cycle.
を有しかつ楕円形状に形成したリング状の第一と第二の
スライダに分割し、前記第一と第二のスライダは夫々が
有する嵌合用段部で嵌合して一体とし、その嵌合部には
スライダ部材の周縁側部においてスライダ部材内部と外
部間をシールするシールリングを配設し、前記第一のス
ライダのスライドシートリングのリング状の開口面をシ
リンダ内の一方のバルブシートのシート面に、第二のス
ライダのスライドシートリングのリング状の開口面をシ
リンダ内の他方のバルブシートのシート面に夫々附勢し
て押しあてる板バネを前記第一と第二のスライダ間に介
在させた特許請求の範囲第１項記載の冷凍サイクル用四
方弁。2. A slider member is divided into ring-shaped first and second sliders each having a slide seat ring and formed in an elliptical shape, and the first and second sliders each have a fitting step. And a seal ring for sealing between the inside and the outside of the slider member is provided at the peripheral portion of the slider member in the fitting portion, and the ring shape of the slide seat ring of the first slider is provided. The opening surface of the valve seat on the seat surface of one valve seat in the cylinder, and the ring-shaped opening surface of the slide seat ring of the second slider on the seat surface of the other valve seat in the cylinder. The four-way valve for a refrigeration cycle according to claim 1, wherein a spring is interposed between the first and second sliders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60251466A JPH0715313B2 (en) | 1985-11-08 | 1985-11-08 | Four-way valve for refrigeration cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60251466A JPH0715313B2 (en) | 1985-11-08 | 1985-11-08 | Four-way valve for refrigeration cycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62113978A JPS62113978A (en) | 1987-05-25 |
| JPH0715313B2 true JPH0715313B2 (en) | 1995-02-22 |
Family
ID=17223232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60251466A Expired - Lifetime JPH0715313B2 (en) | 1985-11-08 | 1985-11-08 | Four-way valve for refrigeration cycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0715313B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5667464U (en) * | 1979-10-29 | 1981-06-04 | ||
| JPS5789070U (en) * | 1980-11-21 | 1982-06-01 |
-
1985
- 1985-11-08 JP JP60251466A patent/JPH0715313B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62113978A (en) | 1987-05-25 |
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