JP2018017274A - Valve body, switching valve, manufacturing method of valve body and refrigeration cycle system - Google Patents

Valve body, switching valve, manufacturing method of valve body and refrigeration cycle system Download PDF

Info

Publication number
JP2018017274A
JP2018017274A JP2016146679A JP2016146679A JP2018017274A JP 2018017274 A JP2018017274 A JP 2018017274A JP 2016146679 A JP2016146679 A JP 2016146679A JP 2016146679 A JP2016146679 A JP 2016146679A JP 2018017274 A JP2018017274 A JP 2018017274A
Authority
JP
Japan
Prior art keywords
valve body
valve
joint
gate
flange
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
Application number
JP2016146679A
Other languages
Japanese (ja)
Other versions
JP6559100B2 (en
Inventor
知之 上野
Tomoyuki Ueno
知之 上野
宏光 木村
Hiromitsu Kimura
宏光 木村
岡田　聡
Satoshi Okada
岡田　　聡
怜 小泉
Rei Koizumi
怜 小泉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saginomiya Seisakusho Inc
Original Assignee
Saginomiya Seisakusho Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Saginomiya Seisakusho Inc filed Critical Saginomiya Seisakusho Inc
Priority to JP2016146679A priority Critical patent/JP6559100B2/en
Priority to CN201710514756.1A priority patent/CN107654694B/en
Publication of JP2018017274A publication Critical patent/JP2018017274A/en
Application granted granted Critical
Publication of JP6559100B2 publication Critical patent/JP6559100B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Multiple-Way Valves (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce an influence of weld by improving a gate position at injection molding time, to secure strength of a valve body and to prevent an influence on a fluid by a gate mark 52A, in a valve body 5A which is a resin molding of a switching valve.SOLUTION: A valve body 5A is formed by injection molding of synthetic resin. A flange part 52 whose outer shape is rectangular is formed around a bowl part 51. An opening shape of a bowl-shaped recess part 51a inside of the bowl part 51 is a shape which has a longer diameter in a slide direction. Straight parts 51a1 in the longer diameter direction and semicircular parts 51a2 on both ends are the edges of the opening. The position of a gate mark 52A is on the side surface of the flange part 52, and in a range surrounding the semicircular part 51a2 including the position striding over a boundary between the straight part 51a1 and the semicircular part 51a2, and weld is at a position other than the straight part 51a1. The portion of a long side on the side surface of the flange part 52 is appropriate for the position of the gate mark 52A.SELECTED DRAWING: Figure 2

Description

本発明は、切換弁の弁体、この弁体を備えた切換弁、この弁体を製造する弁体の製造方法および冷凍サイクルシステムに関する。   The present invention relates to a valve body of a switching valve, a switching valve provided with the valve body, a method for manufacturing the valve body for manufacturing the valve body, and a refrigeration cycle system.

従来、冷凍サイクルシステム等に用いられる切換弁として、円筒状の弁ハウジングの内部で、弁座上に弁体を配置するとともにこの弁体を一対のピストンに連結し、ピストンに加わる流体の圧力で弁体をスライドさせるものがある。そして、このような切換弁において、合成樹脂製の弁体を用いたものが、例えば特許第３２９５７１０号公報（特許文献１）及び特開２００９−４１６３６号公報（特許文献２）に開示されたものがある。   Conventionally, as a switching valve used in a refrigeration cycle system or the like, a valve body is arranged on a valve seat inside a cylindrical valve housing, and this valve body is connected to a pair of pistons, and the pressure of the fluid applied to the pistons There is something that slides the valve body. In such a switching valve, a valve using a synthetic resin valve is disclosed in, for example, Japanese Patent No. 3295710 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2009-41636 (Patent Document 2). There is.

特許第３２９５７１０号公報Japanese Patent No. 3295710 特開２００９−４１６３６号公報JP 2009-41636 A

上述した特許文献１における弁体は、椀状の椀部に金属板体を一体成型することで、弁体の強度を確保している。しかしながら、このように金属板体を設けると弁体の製造工程が複雑になるという問題がある。また、この特許文献１の弁体は、弁体の射出成型時に、弁体の椀部の頂部（上端）にゲートを設けるようにしている。このように椀部の頂部にゲートを設けると、成型金型に対する樹脂の注入時に、樹脂の流れが頂部から椀部の周囲に拡がる。このため、図１０（Ａ）に示すように椀部の内側の凹部９１の周囲のフランジ部９２の４箇所にウェルドが生じてしまう。この種の弁体は、椀部の内側の凹部９１は長円の形状である。また、弁体には高圧と低圧の圧力差により応力が加わり、例えば図１０（Ｂ）に示すように、その凹部９１の長手方向の中央部分が変形し易い。このため、前記フランジ部９２の中央に生じるウェルドにより、弁体の強度が弱くなるという問題がある。   The valve body in patent document 1 mentioned above has ensured the intensity | strength of a valve body by integrally forming a metal plate body in a bowl-shaped collar part. However, when the metal plate is provided in this way, there is a problem that the manufacturing process of the valve body becomes complicated. Moreover, the valve body of this patent document 1 is made to provide a gate in the top part (upper end) of the collar part of a valve body at the time of injection molding of a valve body. When the gate is provided at the top of the collar as described above, the resin flow spreads from the top to the periphery of the collar when the resin is injected into the molding die. For this reason, as shown in FIG. 10 (A), welds are generated at four locations of the flange portion 92 around the recess 91 inside the collar portion. In this type of valve body, the recess 91 inside the collar has an oval shape. Further, stress is applied to the valve body due to the pressure difference between the high pressure and the low pressure, and for example, as shown in FIG. For this reason, there is a problem that the strength of the valve body is weakened by the weld generated in the center of the flange portion 92.

本発明は、樹脂成形品である弁体において射出成型時のゲート位置を改善して、弁体の強度を確保することを課題とする。   This invention makes it a subject to improve the gate position at the time of injection molding in the valve body which is a resin molded product, and to ensure the strength of the valve body.

請求項１の弁体は、筒状の弁ハウジング内で、弁座の複数のポートに椀状凹部を対向させるとともに、前記弁座上をスライドさせて前記椀状凹部により前記複数のポートを連通する、切換弁用の弁体であって、当該弁体は合成樹脂製であり、前記椀状凹部を前記弁座のポートに向かって開口する椀部と、前記椀部の周囲に外形を長方形状に形成されたフランジ部と、を備え、前記椀状凹部は、スライド方向を長径として該長径方向のストレート部と両端の半円部を縁とするオーバル状の開口を有し、前記フランジ部の側面で、かつ、前記椀状凹部の前記ストレート部と前記半円部との境界を跨ぐ位置を含み前記半円部を囲う範囲に、ゲート痕を有することを特徴とする。   The valve body according to claim 1 is configured such that, in the cylindrical valve housing, the plurality of ports of the valve seat are opposed to the flange-shaped recesses, and the plurality of ports are communicated with each other by sliding on the valve seat. A valve body for a switching valve, wherein the valve body is made of a synthetic resin, and has a flange portion that opens the flange-shaped recess toward the port of the valve seat, and a rectangular outer shape around the flange portion. A flange portion formed in a shape, and the flange-shaped recess has an oval opening with a long direction in a sliding direction and an edge in a straight portion in the long diameter direction and semicircular portions at both ends. And a gate mark in a range surrounding the semicircular portion including a position straddling the boundary between the straight portion and the semicircular portion of the bowl-shaped concave portion.

請求項２の弁体は、請求項１に記載の弁体であって、前記ゲート痕は、前記フランジ部の側面の長辺の部分に形成されていることを特徴とする。   A valve body according to a second aspect is the valve body according to the first aspect, wherein the gate mark is formed on a long side portion of a side surface of the flange portion.

請求項３の切換弁は、筒状の弁ハウジングと、該弁ハウジングの内部にスライド自在に設けられた弁体と、前記弁ハウジング内に前記弁体のスライド方向に並んで複数のポートを開口する弁座と、を備え、前記弁体によって前記複数のポートを連通して、前記弁ハウジングに接続される配管を流れる流体の流路を切り換えるようにした切換弁であって、前記弁体として請求項１または２に記載の弁体を備えたことを特徴とする。   The switching valve according to claim 3 is a cylindrical valve housing, a valve body slidably provided inside the valve housing, and a plurality of ports opened in the valve housing side by side in the sliding direction of the valve body. A switching valve that communicates the plurality of ports with the valve body and switches a flow path of a fluid flowing through a pipe connected to the valve housing. The valve body according to claim 1 or 2 is provided.

請求項４の弁体の製造方法は、請求項１の弁体を製造する弁体の製造方法であって、前記弁体に対応する空洞部とゲートとを有するとともに、前記ゲートが、前記空洞部の前記弁体の前記フランジ部の側面で、かつ、前記椀状凹部の前記ストレート部と前記半円部との境界を跨ぐ位置を含み前記半円部を囲う範囲に対応する位置に設けられた成形金型を用い、前記ゲートから前記空洞部内に合成樹脂を注入して射出成型により前記弁体を形成することを特徴とする。   The valve body manufacturing method according to claim 4 is a valve body manufacturing method for manufacturing the valve body according to claim 1, wherein the valve body has a cavity and a gate corresponding to the valve body, and the gate is the cavity. Provided on the side surface of the flange portion of the valve body and at a position corresponding to a range surrounding the semicircular portion including a position across the boundary between the straight portion and the semicircular portion of the bowl-shaped recess. The valve body is formed by injecting synthetic resin from the gate into the cavity using the molding die.

請求項５の冷凍サイクルシステムは、請求項３に記載の切換弁を備えた冷凍サイクルシステムであって、前記弁ハウジングに対して、圧縮機の吐出側に接続されるＤ継手と、該圧縮機の吸入側に接続されるＳ継手と、一方の熱交換器に接続されるＥ継手と、他方の熱交換器に接続されるＣ継手と、がそれぞれ導通され、前記弁体により、前記Ｓ継手に対してＥ継手またはＣ継手を択一的に切換導通するとともに、Ｓ継手に対して非導通となるＣ継手またはＥ継手を前記弁ハウジング内を介して前記Ｄ継手に導通することを特徴とする。   A refrigeration cycle system according to a fifth aspect is a refrigeration cycle system including the switching valve according to the third aspect, wherein a D joint connected to the discharge side of the compressor with respect to the valve housing, and the compressor The S joint connected to the suction side, the E joint connected to one of the heat exchangers, and the C joint connected to the other heat exchanger are electrically connected to each other. The E joint or the C joint is selectively switched and connected to the S joint, and the C joint or E joint that is non-conductive to the S joint is connected to the D joint through the valve housing. To do.

請求項１乃至４の発明によれば、弁体の樹脂成形によるウェルドが、ゲート痕に対して正反対側の部分に生じる傾向にあるので、ウェルドが弁体の椀状凹部におけるストレート部やその中心に生じることがなく、弁体の耐圧性を確保することができる。   According to the first to fourth aspects of the present invention, since the weld due to the resin molding of the valve body tends to occur in the portion on the opposite side to the gate mark, the weld is the straight portion in the bowl-shaped recess of the valve body and its center. The pressure resistance of the valve body can be ensured.

また、請求項２の発明によれば、ゲート痕が弁体の長辺の部分にあるので、この弁体の端部の形状を所望の形状に形成することができる。   According to the invention of claim 2, since the gate mark is in the long side portion of the valve body, the shape of the end of the valve body can be formed in a desired shape.

請求項５の発明によれば、耐圧性を確保した弁体により信頼性の高い冷凍サイクルシステムを得ることができる。   According to the fifth aspect of the present invention, a highly reliable refrigeration cycle system can be obtained by a valve body that ensures pressure resistance.

本発明の実施形態の切換弁の縦断面図である。It is a longitudinal cross-sectional view of the switching valve of embodiment of this invention. 本発明の実施形態における弁体の４面図である。It is a 4th page figure of the valve element in the embodiment of the present invention. 本発明の実施形態における弁体を成形するための成形金型の一部破砕側面図である。It is a partial crushing side view of the molding die for shape | molding the valve body in embodiment of this invention. 本発明の実施形態における弁体の作用を説明する図である。It is a figure explaining the effect | action of the valve body in embodiment of this invention. 本発明の実施形態の弁体の他の例を示す図である。It is a figure which shows the other example of the valve body of embodiment of this invention. 本発明の実施形態の弁体のゲート痕の他の例とその作用を説明する図である。It is a figure explaining the other example of the gate mark of the valve body of embodiment of this invention, and its effect | action. 本発明の実施形態の弁体のゲート痕のさらに他の例とその作用を説明する図である。It is a figure explaining the further another example of the gate mark of the valve body of embodiment of this invention, and its effect | action. 本発明の実施形態におけるゲート痕を設けるのに適した範囲を説明する図である。It is a figure explaining the range suitable for providing the gate trace in embodiment of this invention. 本発明の実施形態の冷凍サイクルシステムを示す図である。It is a figure which shows the refrigerating cycle system of embodiment of this invention. 従来の弁体の問題点を説明する図である。It is a figure explaining the problem of the conventional valve body.

次に、本発明の実施形態について説明する。図１は本発明の実施形態の切換弁の断面図である。なお、以下の説明における「上下」の概念は図１の図面における上下に対応する。この実施形態に係る切換弁１００は四方切換弁であり、後述のようにパイロット弁２００により切り換えられる。この切換弁１００は、弁ハウジング１内に、弁座２、一対のピストン３，３、連結板４、弁部材５を備えている。なお、後述のように、弁部材５は本発明を適用した弁体５Ａを備えている。   Next, an embodiment of the present invention will be described. FIG. 1 is a sectional view of a switching valve according to an embodiment of the present invention. Note that the concept of “upper and lower” in the following description corresponds to the upper and lower sides in the drawing of FIG. The switching valve 100 according to this embodiment is a four-way switching valve, and is switched by a pilot valve 200 as described later. The switching valve 100 includes a valve seat 2, a pair of pistons 3, 3, a connecting plate 4, and a valve member 5 in the valve housing 1. As will be described later, the valve member 5 includes a valve body 5A to which the present invention is applied.

弁ハウジング１は筒状であり、円筒形状の円筒部１ａと２つの栓体１ｂ，１ｂとで構成されている。栓体１ｂ，１ｂはそれぞれ円筒部１ａの端部を塞ぐように円筒部１ａにろう付けや溶接等により取り付けられており、円筒部１ａ及び栓体１ｂ，１ｂの中心軸が弁ハウジング１の軸線Ｌとなっている。この軸線Ｌは後述の弁部材５（弁体５Ａ）のスライド方向である。弁ハウジング１の側部の一箇所にはバーリング加工により接続筒１ｃが形成されており、この接続筒１ｃにはＤ継手１１が取り付けられている。このＤ継手１１は溶接やろう付け等により円筒部１ａに固着されている。これにより、Ｄ継手１１は弁ハウジング１内に導通されている。   The valve housing 1 has a cylindrical shape and includes a cylindrical portion 1a having a cylindrical shape and two plug bodies 1b and 1b. The plugs 1b and 1b are respectively attached to the cylindrical part 1a by brazing or welding so as to close the end of the cylindrical part 1a. The central axis of the cylindrical part 1a and the plugs 1b and 1b is the axis of the valve housing 1 L. The axis L is a sliding direction of a later-described valve member 5 (valve body 5A). A connecting tube 1c is formed at one side of the valve housing 1 by burring, and a D joint 11 is attached to the connecting tube 1c. The D joint 11 is fixed to the cylindrical portion 1a by welding or brazing. As a result, the D joint 11 is electrically connected to the valve housing 1.

弁座２は、弁座面２１を弁ハウジング１の軸線Ｌと平行にして弁ハウジング１内の中間部に配設されている。この弁座２には、弁ハウジング１の軸線Ｌ方向に一直線上に並んでその中心にＳポート２２が，Ｓポート２２の両脇にＥポート２３及びＣポート２４がそれぞれ形成されている。そして、弁座２及び弁ハウジング１には、Ｓポート２２、Ｅポート２３、Ｃポート２４にそれぞれ対応するＳ継手１２、Ｅ継手１３、Ｃ継手１４が取り付けられている。Ｓ継手１２、Ｅ継手１３及びＣ継手１４は、その端部を円筒部１ａの壁を貫通させて弁座２に嵌合され、溶接やろう付け等により弁ハウジング１及び弁座２に固着されている。これにより、Ｓ継手１２、Ｅ継手１３、Ｃ継手１４が弁ハウジング１内に導通されている。   The valve seat 2 is disposed at an intermediate portion in the valve housing 1 with the valve seat surface 21 parallel to the axis L of the valve housing 1. In the valve seat 2, an S port 22 is formed in a straight line in the axis L direction of the valve housing 1, and an E port 23 and a C port 24 are formed on both sides of the S port 22. The valve joint 2 and the valve housing 1 are provided with S joints 12, E joints 13, and C joints 14 corresponding to the S port 22, E port 23, and C port 24, respectively. The S joint 12, the E joint 13, and the C joint 14 are fitted to the valve seat 2 with their ends penetrating the wall of the cylindrical portion 1a, and are fixed to the valve housing 1 and the valve seat 2 by welding or brazing. ing. As a result, the S joint 12, the E joint 13, and the C joint 14 are conducted into the valve housing 1.

一対のピストン３，３は互いに対向配置され、この一対のピストン３，３はパッキン３１，３１を円筒部１ａの内周面に押圧しながら往復移動可能となっている。これにより、弁ハウジング１の内部は、２つのピストン３，３により、中央部の主弁室１Ａと主弁室１Ａの両側の２つの作動室１Ｂ，１Ｂとに仕切られている。   The pair of pistons 3 and 3 are disposed to face each other, and the pair of pistons 3 and 3 can reciprocate while pressing the packings 31 and 31 against the inner peripheral surface of the cylindrical portion 1a. Thereby, the inside of the valve housing 1 is partitioned by the two pistons 3 and 3 into a main valve chamber 1A at the center and two working chambers 1B and 1B on both sides of the main valve chamber 1A.

連結板４は金属板からなり、この連結板４は、弁ハウジング１の軸線Ｌ上に配置されるようにピストン３，３の間に架設されている。また、連結板４には、その中央に弁部材５を保持する保持孔４１と、弁部材５の両側に位置する透孔４２，４３と、が形成され、弁部材５は後述の椀部５１が保持孔４１内に嵌め込まれて連結板４に保持されている。そして、弁部材５は、ピストン３，３が移動すると連結板４に連動して弁座２の弁座面２１上を軸線Ｌ方向（スライド方向）に摺動し、予め定められた左右の位置で停止する。   The connecting plate 4 is made of a metal plate, and the connecting plate 4 is installed between the pistons 3 and 3 so as to be disposed on the axis L of the valve housing 1. Further, the connecting plate 4 is formed with a holding hole 41 for holding the valve member 5 in the center thereof and through holes 42 and 43 located on both sides of the valve member 5, and the valve member 5 is a flange 51 described later. Is fitted in the holding hole 41 and held by the connecting plate 4. When the pistons 3 and 3 are moved, the valve member 5 slides on the valve seat surface 21 of the valve seat 2 in the direction of the axis L (sliding direction) in conjunction with the connecting plate 4, and predetermined left and right positions. Stop at.

弁部材５には後述のように椀部５１の内側に椀状凹部５１ａが形成されている。そして、弁部材５は、図１の左側の端部位置において、Ｓポート２２とＥポート２３とを椀状凹部５１ａにより導通する。このとき、Ｃポート２４は主弁室１Ａ内で主に透孔４３を介してＤ継手１１に導通する。また、弁部材５は、図１の右側の端部位置において、Ｓポート２２とＣポート２４とを椀状凹部５１ａにより導通する。このとき、Ｅポート２３は主弁室１Ａ内で主に透孔４２を介してＤ継手１１に導通する。   As will be described later, the valve member 5 has a flange-like recess 51 a formed inside the flange 51. And the valve member 5 conduct | electrically_connects the S port 22 and the E port 23 by the hook-shaped recessed part 51a in the edge part position of the left side of FIG. At this time, the C port 24 is electrically connected to the D joint 11 through the through hole 43 in the main valve chamber 1A. Further, the valve member 5 conducts the S port 22 and the C port 24 through the hook-shaped recess 51a at the right end position in FIG. At this time, the E port 23 is electrically connected to the D joint 11 through the through hole 42 in the main valve chamber 1A.

Ｄ継手１１は後述の圧縮機１１０の吐出側に接続され、Ｓポート２２はＳ継手１２を介して圧縮機１１０の吸入側に接続される。また、Ｅポート２３はＥ継手１３を介して後述の室内熱交換器１２０に接続され、Ｃポート２４はＣ継手１４を介して後述の室外熱交換器１３０に接続される。このようにして、実施形態の切換弁は冷凍サイクルシステムに接続される。   The D joint 11 is connected to the discharge side of the compressor 110 described later, and the S port 22 is connected to the suction side of the compressor 110 via the S joint 12. The E port 23 is connected to an indoor heat exchanger 120 described later via an E joint 13, and the C port 24 is connected to an outdoor heat exchanger 130 described later via a C joint 14. Thus, the switching valve of the embodiment is connected to the refrigeration cycle system.

弁部材５は、合成樹脂からなる弁体５Ａとステンレス製の補助ピン５Ｂとで構成されている。図２は実施形態における弁体５Ａの４面図であり、図２（Ａ）は上面図、図２（Ｂ）は図２（Ａ）のＡ−Ａ断面図、図２（Ｃ）は底面図、図２（Ｄ）は図２（Ｂ）のＢ−Ｂ断面図である。弁体５Ａは、ＰＰＳ（ポリフェニレンサルファイド）樹脂やＰＡ（ポリアミド）樹脂等の合成樹脂製の射出成型品である。そして、弁体５Ａは、前記弁座２に向かって椀状凹部５１ａを凹状に開口した椀部５１と、この椀状凹部５１ａの開口縁から外方に延びるフランジ部５２と、を有して形成されている。椀部５１は、平面視で長円形状を有したドーム状に形成され、この椀部５１が連結板４の保持孔４１に挿入される。椀部５１の内部には、前記椀状凹部５１ａが形成されるとともに、この椀状凹部５１ａの内面で、軸線Ｌと直行する方向の両端２箇所には、補助ピン５Ｂを嵌合する縦溝５１ｂ，５１ｂが形成されている。   The valve member 5 includes a valve body 5A made of a synthetic resin and a stainless steel auxiliary pin 5B. 2A and 2B are four side views of the valve body 5A in the embodiment. FIG. 2A is a top view, FIG. 2B is a cross-sectional view taken along the line AA in FIG. 2A, and FIG. FIG. 2 (D) is a cross-sectional view taken along the line BB in FIG. 2 (B). The valve body 5A is an injection molded product made of a synthetic resin such as PPS (polyphenylene sulfide) resin or PA (polyamide) resin. And 5 A of valve bodies have the flange part 52 extended outward from the opening edge of this flange-shaped recessed part 51a, and the flange part 52 which opened the flange-shaped recessed part 51a toward the said valve seat 2 concavely, and has it. Is formed. The flange 51 is formed in a dome shape having an oval shape in plan view, and the flange 51 is inserted into the holding hole 41 of the connecting plate 4. Inside the flange 51, the flange 51a is formed, and on the inner surface of the flange 51a, two longitudinal grooves for fitting the auxiliary pins 5B in the direction perpendicular to the axis L are provided. 51b and 51b are formed.

フランジ部５２は、平面視で外形が長方形状に形成され、弁座２の弁座面２１と摺接する摺接面５２ａ有しており、この摺接面５２ａの内側に前記椀状凹部５１ａが開口している。このフランジ部５２は、弁座２と連結板４との間に配置される。そして、弁部材５に作用する高圧と低圧の圧力差により摺接面５２ａが弁座２の弁座面２１に密接され、椀部５１の椀状凹部５１ａが弁座２に対して閉じられるようになっている。また、フランジ部５２の外周１箇所にはゲート痕５２Ａが形成されている。   The flange portion 52 has a rectangular outer shape in plan view, and has a sliding contact surface 52a that is in sliding contact with the valve seat surface 21 of the valve seat 2. The flange-shaped recess 51a is formed inside the sliding contact surface 52a. It is open. The flange portion 52 is disposed between the valve seat 2 and the connecting plate 4. Then, the sliding contact surface 52 a is brought into close contact with the valve seat surface 21 of the valve seat 2 by the pressure difference between the high pressure and the low pressure acting on the valve member 5, and the flange-shaped recess 51 a of the flange portion 51 is closed with respect to the valve seat 2. It has become. Further, a gate mark 52 </ b> A is formed at one place on the outer periphery of the flange portion 52.

図２（Ｃ）に示すように、摺接面５２ａに開口する椀状凹部５１ａの開口形状は、軸線Ｌ方向（長手方向）のストレート部５１ａ１と、軸線Ｌを跨ぐ円弧部５１ａ２とを有する長円形状となっている。そして、上記ゲート痕５２Ａは、フランジ部５２の側面において、ストレート部５１ａ１よりも円弧部５１ａ２側、すなわちストレート部５１ａ１の端部から軸線Ｌと平行な方向に離れて位置している。この実施形態では、ゲート痕５２Ａの位置はストレート部５１ａ１と円弧部５１ａ２との境界近傍の位置である。   As shown in FIG. 2 (C), the opening shape of the bowl-shaped recess 51a that opens in the sliding contact surface 52a is a length that includes a straight portion 51a1 in the axis L direction (longitudinal direction) and an arc portion 51a2 that straddles the axis L. It has a circular shape. The gate mark 52A is located on the side surface of the flange portion 52 away from the straight portion 51a1 in the arc portion 51a2 side, that is, in the direction parallel to the axis L from the end portion of the straight portion 51a1. In this embodiment, the position of the gate mark 52A is near the boundary between the straight portion 51a1 and the arc portion 51a2.

図３は弁体５Ａを成形するための成形金型の一部破砕側面図であり、この金型は、下金型１０と上金型２０とで構成されている。下金型１０には椀状凹部５１ａに対応するコア１０ａとフランジ部５２に対応するキャビティ１０ｂとが形成されている。上金型２０には、椀部５１に対応するキャビティ２０ａとフランジ部５２に対応するキャビティ２０ｂとが形成されている。そして、下金型１０と上金型２０を合わせることにより、コア１０ａ、キャビティ１０ｂ、キャビティ２０ａ及びキャビティ２０ｂに囲われた空洞部３０が形成される。   FIG. 3 is a partially broken side view of a molding die for molding the valve body 5 </ b> A. The die is composed of a lower die 10 and an upper die 20. The lower mold 10 is formed with a core 10 a corresponding to the flange-shaped recess 51 a and a cavity 10 b corresponding to the flange portion 52. In the upper mold 20, a cavity 20 a corresponding to the flange portion 51 and a cavity 20 b corresponding to the flange portion 52 are formed. Then, by combining the lower mold 10 and the upper mold 20, the cavity 10 surrounded by the core 10a, the cavity 10b, the cavity 20a, and the cavity 20b is formed.

また、上金型２０の側部には、下金型１０との合わせ面（あるいはパーティング面）を窪ませたゲート溝２０ｃが形成されている。このゲート溝２０ｃの位置は、弁体５Ａの椀状凹部５１ａの長手方向のストレート部５１ａ１よりも円弧部５１ａ２側（軸線Ｌ方向で中心から離れた位置）に位置している。そして、このゲート溝２０ｃが下金型１０の合わせ面に重なることにより、空洞部３０に連通するゲート４０が構成される。なお、図３は下金型１０と上金型２０の要部のみを図示したものであり、実際の金型では例えば上記ゲート４０に連通するランナー溝及びスプール溝等も備えている。   Further, a gate groove 20 c is formed in the side portion of the upper mold 20, in which the mating surface (or parting surface) with the lower mold 10 is recessed. The position of the gate groove 20c is located closer to the arc part 51a2 (position away from the center in the direction of the axis L) than the straight part 51a1 in the longitudinal direction of the bowl-shaped recess 51a of the valve body 5A. The gate groove 20 c overlaps the mating surface of the lower mold 10, whereby the gate 40 communicating with the cavity 30 is configured. FIG. 3 shows only the main parts of the lower mold 10 and the upper mold 20, and the actual mold includes, for example, a runner groove and a spool groove that communicate with the gate 40.

弁体５Ａの成型時には、ゲート４０を介し空洞部３０に溶融樹脂を注入し、冷却後、下金型１０と上金型２０を分けて、コア１０ａ、キャビティ１０ｂ、キャビティ２０ａ及びキャビティ２０ｂから樹脂成型品を取り出す。そして、ゲート４０に対応するゲート部の樹脂部を切除して適宜整形する。以上のように、弁体５Ａは射出成型により形成する。これにより弁体５Ａのフランジ部５２の一箇所に前記ゲート痕５２Ａが残る。このように、下金型１０及び上金型２０によるゲート４０は、弁体５Ａのフランジ部５２の側部であって椀状凹部５１ａのストレート部５１ａ１よりも円弧部５１ａ２側となる位置に対応して設けられ、これにより、ゲート痕５２Ａは、弁体５Ａのフランジ部５２の側部であってストレート部５１ａ１よりも円弧部５１ａ２側となる位置に残る。   When molding the valve body 5A, molten resin is injected into the cavity 30 through the gate 40, and after cooling, the lower mold 10 and the upper mold 20 are separated, and the resin from the core 10a, the cavity 10b, the cavity 20a, and the cavity 20b. Take out the molded product. And the resin part of the gate part corresponding to the gate 40 is excised and shaped appropriately. As described above, the valve body 5A is formed by injection molding. As a result, the gate mark 52A remains at one location of the flange portion 52 of the valve body 5A. Thus, the gate 40 by the lower mold 10 and the upper mold 20 corresponds to a position on the side of the flange portion 52 of the valve body 5A and on the arc portion 51a2 side of the straight portion 51a1 of the bowl-shaped recess 51a. Thus, the gate mark 52A remains on the side of the flange portion 52 of the valve body 5A and on the arc portion 51a2 side of the straight portion 51a1.

ここで、弁体５Ａは、ゲート痕５２Ａを除いて、図２及び図３に示す軸線Ｖ回りの２回対称（１８０度対称）の対称性を有している。すなわち、空洞部３０を、ゲート４０と軸線Ｖを含む面で２分割したとき、分割された空洞部３０の２つの空間の体積は同じになる。したがって、ゲート４０から空洞部３０に注入された樹脂は、一旦、コア１０ａで分流して流れ、空洞部３０内でゲート４０から軸線Ｖを中心とする正反対側で合流する傾向にある。例えば、この樹脂の流れを弁体５Ａにおける概念的な流れとして図示すると図４の矢印のようになる。このように、弁体５Ａには、樹脂の流れが合流する場所において、ウェルドが生じるが、このウェルドは、ゲート痕５２Ａの軸線Ｖを中心とする略正反対側の部分に生じる傾向にある。したがって、ウェルドが弁体５Ａの椀状凹部５１ａにおけるストレート部５２ａ１やその中心に生じることがなく、弁体５Ａ（弁部材５）の耐圧性を確保することができる。   Here, the valve body 5A has two-fold symmetry (180-degree symmetry) around the axis V shown in FIGS. 2 and 3 except for the gate mark 52A. That is, when the cavity 30 is divided into two on the plane including the gate 40 and the axis V, the volumes of the two spaces of the divided cavity 30 are the same. Therefore, the resin injected into the cavity 30 from the gate 40 once flows after being divided by the core 10a, and tends to merge in the cavity 30 from the gate 40 on the opposite side centered on the axis V. For example, when the flow of the resin is illustrated as a conceptual flow in the valve body 5A, it becomes as indicated by an arrow in FIG. As described above, the valve body 5A has a weld at a location where the resin flows merge. However, this weld tends to occur in a portion on the substantially opposite side with the axis V of the gate mark 52A as the center. Therefore, the weld does not occur at the straight portion 52a1 or the center of the flange-shaped recess 51a of the valve body 5A, and the pressure resistance of the valve body 5A (valve member 5) can be ensured.

また、この実施形態では、ゲート痕５２Ａは弁体５Ａのフランジ部５２の端部（短辺部）に残ることもないので、例えば図５に示すように、弁体５Ａの端部の形状を所望の形状に形成することができる。図５（Ａ）の弁体５Ａは、フランジ部５２の端部に凹部５２１を形成することにより、弁部材５の切換え途中にＤ継手１１から椀状凹部５１ａを介してＳポート２２に流れる中間流量を調整し、切換え時の切換弁の作動性を良好にするとともに冷凍サイクルシステムの運転状態に支障をきたさないようにするものである。また、図５（Ｂ）の弁体５Ａは、フランジ部５２の端部にテーパ部５２２を形成することで、ポートに流れる高圧流体の圧損を低減するようにしたものである。このように、ゲート痕５２Ａをフランジ部５２の長辺の部分に設けるようにしたので、流量への影響を防止することができる。   Further, in this embodiment, the gate mark 52A does not remain at the end (short side) of the flange portion 52 of the valve body 5A. Therefore, for example, as shown in FIG. It can be formed into a desired shape. The valve body 5A of FIG. 5 (A) forms a recess 521 at the end of the flange portion 52, so that the valve member 5 is intermediately flowing from the D joint 11 to the S port 22 through the hook-shaped recess 51a during the switching of the valve member 5. The flow rate is adjusted so that the operability of the switching valve at the time of switching is improved and the operating state of the refrigeration cycle system is not hindered. Further, the valve body 5A of FIG. 5B is configured to reduce the pressure loss of the high-pressure fluid flowing through the port by forming a tapered portion 522 at the end of the flange portion 52. As described above, since the gate mark 52A is provided on the long side portion of the flange portion 52, the influence on the flow rate can be prevented.

上記の実施形態では、ゲート痕５２Ａ（ゲート４０）の位置が、ストレート部５１ａ１と円弧部５１ａ２との境界近傍の場合としているが、例えば図６に示すように、ゲート痕５２Ａを、フランジ部５２の長辺において、ストレート部５１ａ１からさらに外側に離した位置に設けるようにしてもよい。すなわち、ゲート痕５２Ａは、フランジ部５２の長辺の部分で、かつストレート部５１ａ１の端部よりも外側の位置となっている。   In the above embodiment, the gate mark 52A (gate 40) is positioned in the vicinity of the boundary between the straight part 51a1 and the arc part 51a2. However, as shown in FIG. In the long side, it may be provided at a position further away from the straight portion 51a1. That is, the gate mark 52A is a long side portion of the flange portion 52 and is located outside the end portion of the straight portion 51a1.

また、上記の実施形態では、ゲート痕（あるいはゲート）の位置をフランジ部５２の長辺の部分に設けているので、前記図５の形態とすることができるが、本発明はこれに限らず、ウェルドによる強度上の問題を解消するために、例えば樹脂成型時のゲートの位置をフランジ部の短手方向の短辺の部分に設けるようにしてもよい。例えば、図７に示す弁体５Ａのように、ゲート痕５２Ａがフランジ部５２の短手方向の短辺の部分に形成された例の場合、射出成型時の樹脂の流れは図７の矢印のようになる。そして、この場合も、ウェルドはゲート痕５２Ａの反対側の短辺の部分に生じる。この弁体５Ａにおいてフランジ部５２の短辺の部分は、椀状凹部５１ａの円弧部５１ａ２の近傍の、弁体の耐圧性に影響を与えにくい部位であり、ここにウェルドが生じても耐圧性の点で問題はない。また、この短辺の部分にゲート痕５２Ａが残る場合には、切削や研磨等によりゲート痕５２Ａを除去するのが好ましい。これにより、弁ハウジング１内からポートへの流体の流れに対する影響を低減できる。   Further, in the above embodiment, since the position of the gate mark (or gate) is provided in the long side portion of the flange portion 52, the embodiment shown in FIG. 5 can be adopted, but the present invention is not limited to this. In order to solve the problem of strength due to the weld, for example, the position of the gate at the time of resin molding may be provided on the short side portion of the flange portion in the short direction. For example, in the case of an example in which the gate mark 52A is formed in the short side portion of the flange portion 52 in the short direction like the valve body 5A shown in FIG. 7, the flow of the resin at the time of injection molding is indicated by the arrow in FIG. It becomes like this. Also in this case, the weld is generated in the short side portion on the opposite side of the gate mark 52A. In this valve body 5A, the short side portion of the flange portion 52 is a portion in the vicinity of the arc portion 51a2 of the bowl-shaped recess 51a that does not easily affect the pressure resistance of the valve body. There is no problem in terms of. Further, when the gate mark 52A remains in the short side portion, it is preferable to remove the gate mark 52A by cutting or polishing. Thereby, the influence with respect to the flow of the fluid from the valve housing 1 to a port can be reduced.

図８はゲート痕５２Ａを設けるのに適した範囲を説明する図である。この適した範囲は図８に太線の矢印で示す範囲であり、前記各実施形態のゲート痕５２Ａは太線の矢印で示す範囲内に設けられている。すなわち、ゲート痕５２Ａは、椀状凹部５１ａのストレート部５１ａ１と半円部５１ａ２との境界を跨ぐ位置を含み半円部５１ａ２を囲う範囲に設けられている。なお、この「境界を跨ぐ位置」とは、この境界からフランジ部５２の長辺への垂線の足を中心とするゲート痕５２Ａの幅に対応する位置である。また、「半円部５１ａ２を囲う範囲」とは、境界を跨ぐ位置を含み、フランジ部５２の側面のうち、短辺とその両側の長辺の一部の範囲である。なお、成形金型においては、前記ゲート４０の位置を上記太線の矢印で示す範囲に対応する位置に設けるようにすればよい。   FIG. 8 is a diagram for explaining a range suitable for providing the gate mark 52A. This suitable range is the range indicated by the thick line arrow in FIG. 8, and the gate mark 52A of each of the above embodiments is provided within the range indicated by the thick line arrow. That is, the gate mark 52A is provided in a range surrounding the semicircular portion 51a2 including a position straddling the boundary between the straight portion 51a1 and the semicircular portion 51a2 of the bowl-shaped concave portion 51a. The “position across the boundary” is a position corresponding to the width of the gate mark 52A centering on the leg of the perpendicular from the boundary to the long side of the flange portion 52. The “range surrounding the semicircular portion 51a2” includes a position straddling the boundary, and is a range of a short side and a part of the long side on both sides of the side surface of the flange portion 52. In the molding die, the gate 40 may be provided at a position corresponding to the range indicated by the thick arrow.

図９は実施形態に係る冷凍サイクルシステムの概略構成図である。なお、同図において、切換弁１００の詳細な符号は省略する。この冷凍サイクルシステムは、ルームエアコン等の空気調和機に利用されるものであって、冷媒を圧縮する圧縮機１１０と、冷却モード時に蒸発器として機能する室内熱交換器１２０と、冷却モード時に凝縮器として機能する室外熱交換器１３０と、室内熱交換器１２０と室外内熱交換器１３０との間にて冷媒を膨張させて減圧する膨張手段としての膨張弁１４０と、前記実施形態の切換弁１００と、パイロット弁２００と、を備え、これらが冷媒配管によって連結されている。なお、膨張手段としては、膨張弁１４０に限らず、キャピラリでもよい。   FIG. 9 is a schematic configuration diagram of a refrigeration cycle system according to the embodiment. In addition, the detailed code | symbol of the switching valve 100 is abbreviate | omitted in the same figure. This refrigeration cycle system is used for an air conditioner such as a room air conditioner, and includes a compressor 110 that compresses refrigerant, an indoor heat exchanger 120 that functions as an evaporator in the cooling mode, and a condenser in the cooling mode. An outdoor heat exchanger 130 functioning as a heat exchanger, an expansion valve 140 as expansion means for expanding and reducing the pressure of the refrigerant between the indoor heat exchanger 120 and the outdoor heat exchanger 130, and the switching valve of the embodiment. 100 and a pilot valve 200, which are connected by a refrigerant pipe. The expansion means is not limited to the expansion valve 140 but may be a capillary.

パイロット弁２００は、導管２０１〜２０４により切換弁１００に接続されている。パイロット弁２００は、例えば切換弁１００と同様な構造であり、電磁アクチュエータ２２０により本体２１０内のスライド弁を移動して流路を切り換える。そして、このパイロット弁２００は、本体２１０内において、Ｓ継手１２に連通する導管２０２の接続先を、切換弁１００の左側の作動室１Ｂに連通する導管２０３と、右側の作動室１Ｂに連通する導管２０４とで切り換える。また、これと同時にＤ継手１１に連通する導管２０１の接続先を導管２０４と導管２０３とで切り換える。   The pilot valve 200 is connected to the switching valve 100 by conduits 201-204. The pilot valve 200 has a structure similar to that of the switching valve 100, for example, and switches the flow path by moving the slide valve in the main body 210 by the electromagnetic actuator 220. In the pilot valve 200, the connection destination of the conduit 202 communicating with the S joint 12 in the main body 210 is communicated with the conduit 203 communicating with the left working chamber 1B of the switching valve 100 and the right working chamber 1B. Switching with conduit 204. At the same time, the connection destination of the conduit 201 communicating with the D joint 11 is switched between the conduit 204 and the conduit 203.

すなわち、切換弁１００の左右の作動室１Ｂ，１Ｂに対して、一方を減圧するとともに他方を高圧にする状態を両作動室１Ｂ，１Ｂ間で切り換える。これにより、ピストン３，３、連結板４及び弁部材５が移動され、この弁部材５の位置が切り換えられて冷凍サイクルシステムの流路が切り換えられる。なお、圧縮機１１０で圧縮された高圧の冷媒はＤ継手１１から主弁室１Ａ内に流入し、冷房運転の状態では、高圧冷媒はＣ継手１４から室外熱交換器１３０に流入される。また、暖房運転の状態では、高圧冷媒はＥ継手１３から室内熱交換器１２０に流入される。   That is, with respect to the left and right working chambers 1B and 1B of the switching valve 100, the state in which one is decompressed and the other is made high is switched between the working chambers 1B and 1B. As a result, the pistons 3, 3, the connecting plate 4, and the valve member 5 are moved, the position of the valve member 5 is switched, and the flow path of the refrigeration cycle system is switched. The high-pressure refrigerant compressed by the compressor 110 flows into the main valve chamber 1A from the D joint 11, and in the cooling operation state, the high-pressure refrigerant flows from the C joint 14 into the outdoor heat exchanger 130. Further, in the heating operation state, the high-pressure refrigerant flows into the indoor heat exchanger 120 from the E joint 13.

以上の実施形態における弁部材５は補強ピン５Ｂを備えているが、この補強ピン５Ｂを無くした弁体５Ａのみを用いてもよい。   Although the valve member 5 in the above embodiment includes the reinforcing pin 5B, only the valve body 5A without the reinforcing pin 5B may be used.

以上、本発明の実施の形態について図面を参照して詳述してきたが、具体的な構成はこれらの実施の形態に限られるものではなく、本発明の要旨を逸脱しない範囲の設計の変更等があっても本発明に含まれる。   As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention.

１ 弁ハウジング
Ｌ 軸線
１ａ 円筒部
１ｂ 栓体
１Ａ 主弁室
１Ｂ 作動室
１１ Ｄ継手
１２ Ｓ継手
１３ Ｅ継手
１４ Ｃ継手
２ 弁座
２１ 弁座面
２２ Ｓポート
２３ Ｅポート
２４ Ｃポート
３ ピストン
４ 連結板
５ 弁部材
５Ａ 弁体
５Ｂ 補助ピン
５１ 椀部
５１ａ 椀状凹部
５１ａ１ ストレート部
５１ａ２ 円弧部
５２ フランジ部
５２ａ 摺接面
５２Ａ ゲート痕
１０ 下金型
１０ａ コア
１０ｂ キャビティ
２０ 上金型
２０ａ キャビティ
２０ｂ キャビティ
２０ｃ ゲート溝
３０ 空洞部
４０ ゲート
１００ 切換弁
１１０ 圧縮機
１２０ 室内熱交換器
１３０ 室外熱交換器
１４０ 膨張弁
２００ パイロット弁 DESCRIPTION OF SYMBOLS 1 Valve housing L Axis 1a Cylindrical part 1b Plug body 1A Main valve chamber 1B Actuation chamber 11 D joint 12 S joint 13 E joint 14 C joint 2 Valve seat 21 Valve seat surface 22 S port 23 E port 24 C port 3 Piston 4 connection Plate 5 Valve member 5A Valve body 5B Auxiliary pin 51 ridge portion 51a ridge-shaped recess portion 51a1 straight portion 51a2 arc portion 52 flange portion 52a sliding contact surface 52A gate mark 10 lower mold 10a core 10b cavity 20 upper mold 20a cavity 20b cavity 20c Gate groove 30 Cavity 40 Gate 100 Switching valve 110 Compressor 120 Indoor heat exchanger 130 Outdoor heat exchanger 140 Expansion valve 200 Pilot valve

Claims (5)

筒状の弁ハウジング内で、弁座の複数のポートに椀状凹部を対向させるとともに、前記弁座上をスライドさせて前記椀状凹部により前記複数のポートを連通する、切換弁用の弁体であって、
当該弁体は合成樹脂製であり、前記椀状凹部を前記弁座のポートに向かって開口する椀部と、前記椀部の周囲に外形を長方形状に形成されたフランジ部と、を備え、
前記椀状凹部は、スライド方向を長径として該長径方向のストレート部と両端の半円部を縁とするオーバル状の開口を有し、前記フランジ部の側面で、かつ、前記椀状凹部の前記ストレート部と前記半円部との境界を跨ぐ位置を含み前記半円部を囲う範囲に、ゲート痕を有する
ことを特徴とする弁体。 A valve body for a switching valve in which a bowl-shaped recess is opposed to a plurality of ports of a valve seat in a cylindrical valve housing, and the plurality of ports communicate with each other by sliding on the valve seat. Because
The valve body is made of synthetic resin, and includes a flange portion that opens the flange-shaped recess toward the port of the valve seat, and a flange portion that is formed in a rectangular shape around the flange portion,
The saddle-shaped recess has an oval-shaped opening having a long axis in the sliding direction and an edge of the straight portion in the long-diameter direction and semicircular portions at both ends, and on the side surface of the flange portion, and A valve body having a gate mark in a range including a position straddling a boundary between a straight portion and the semicircular portion and surrounding the semicircular portion. 前記ゲート痕は、前記フランジ部の側面の長辺の部分に形成されていることを特徴とする請求項１に記載の弁体。   The valve body according to claim 1, wherein the gate mark is formed on a long side portion of a side surface of the flange portion. 筒状の弁ハウジングと、該弁ハウジングの内部にスライド自在に設けられた弁体と、前記弁ハウジング内に前記弁体のスライド方向に並んで複数のポートを開口する弁座と、を備え、前記弁体によって前記複数のポートを連通して、前記弁ハウジングに接続される配管を流れる流体の流路を切り換えるようにした切換弁であって、
前記弁体として請求項１または２に記載の弁体を備えた
ことを特徴とする切換弁。 A cylindrical valve housing, a valve body slidably provided inside the valve housing, and a valve seat that opens a plurality of ports side by side in the sliding direction of the valve body in the valve housing, A switching valve that communicates the plurality of ports with the valve body and switches a flow path of a fluid flowing through a pipe connected to the valve housing;
A switching valve comprising the valve body according to claim 1 or 2 as the valve body. 請求項１の弁体を製造する弁体の製造方法であって、
前記弁体に対応する空洞部とゲートとを有するとともに、前記ゲートが、前記空洞部の前記弁体の前記フランジ部の側面で、かつ、前記椀状凹部の前記ストレート部と前記半円部との境界を跨ぐ位置を含み前記半円部を囲う範囲に対応する位置に設けられた成形金型を用い、
前記ゲートから前記空洞部内に合成樹脂を注入して射出成型により前記弁体を形成する
ことを特徴とする弁体の製造方法。 A method for manufacturing a valve body for manufacturing the valve body according to claim 1,
A hollow portion corresponding to the valve body and a gate, and the gate is a side surface of the flange portion of the valve body of the hollow portion, and the straight portion and the semicircular portion of the bowl-shaped recess Using a molding die provided at a position corresponding to the range surrounding the semicircular portion including the position across the boundary of
A method for manufacturing a valve body, comprising: injecting a synthetic resin into the cavity from the gate and forming the valve body by injection molding. 請求項３に記載の切換弁を備えた冷凍サイクルシステムであって、
前記弁ハウジングに対して、圧縮機の吐出側に接続されるＤ継手と、該圧縮機の吸入側に接続されるＳ継手と、一方の熱交換器に接続されるＥ継手と、他方の熱交換器に接続されるＣ継手と、がそれぞれ導通され、前記弁体により、前記Ｓ継手に対してＥ継手またはＣ継手を択一的に切換導通するとともに、Ｓ継手に対して非導通となるＣ継手またはＥ継手を前記弁ハウジング内を介して前記Ｄ継手に導通することを特徴とする冷凍サイクルシステム。 A refrigeration cycle system comprising the switching valve according to claim 3,
For the valve housing, a D joint connected to the discharge side of the compressor, an S joint connected to the suction side of the compressor, an E joint connected to one heat exchanger, and the other heat The C joint connected to the exchanger is electrically connected to each other, and the valve body selectively switches the E joint or the C joint to the S joint and becomes non-conductive to the S joint. A refrigeration cycle system, wherein a C joint or an E joint is electrically connected to the D joint through the valve housing.
JP2016146679A 2016-07-26 2016-07-26 Valve body, switching valve, valve body manufacturing method, and refrigeration cycle system Active JP6559100B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016146679A JP6559100B2 (en) 2016-07-26 2016-07-26 Valve body, switching valve, valve body manufacturing method, and refrigeration cycle system
CN201710514756.1A CN107654694B (en) 2016-07-26 2017-06-29 Spool, reversal valve, the manufacturing method of spool and refrigerating circulation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016146679A JP6559100B2 (en) 2016-07-26 2016-07-26 Valve body, switching valve, valve body manufacturing method, and refrigeration cycle system

Publications (2)

Publication Number Publication Date
JP2018017274A true JP2018017274A (en) 2018-02-01
JP6559100B2 JP6559100B2 (en) 2019-08-14

Family

ID=61081435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016146679A Active JP6559100B2 (en) 2016-07-26 2016-07-26 Valve body, switching valve, valve body manufacturing method, and refrigeration cycle system

Country Status (2)

Country Link
JP (1) JP6559100B2 (en)
CN (1) CN107654694B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7058418B2 (en) * 2019-02-05 2022-04-22 株式会社不二工機 Flow switching valve
JP7230833B2 (en) * 2020-01-21 2023-03-01 トヨタ自動車株式会社 METHOD AND APPARATUS FOR MANUFACTURING FIBER REINFORCED RESIN MOLDED PRODUCTS

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56501379A (en) * 1979-10-26 1981-09-24
JP3295710B2 (en) * 1993-12-01 2002-06-24 株式会社鷺宮製作所 Valve element for four-way switching valve and method of manufacturing the same
JP2012082883A (en) * 2010-10-08 2012-04-26 Saginomiya Seisakusho Inc Valve element for channel switching valve
WO2015078197A1 (en) * 2013-11-29 2015-06-04 浙江三花制冷集团有限公司 Four-way reversing valve and slider thereof, and slider manufacturing method
JP2015200400A (en) * 2014-04-10 2015-11-12 株式会社鷺宮製作所 Valve body for flow passage changeover valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202274164U (en) * 2011-10-24 2012-06-13 株式会社鹭宫制作所 Runner conversion valve
CN202274138U (en) * 2011-10-24 2012-06-13 株式会社鹭宫制作所 Sliding valve
CN104930210B (en) * 2014-03-17 2018-03-13 浙江三花制冷集团有限公司 A kind of slidingtype reversal valve sliding block and slidingtype reversal valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56501379A (en) * 1979-10-26 1981-09-24
JP3295710B2 (en) * 1993-12-01 2002-06-24 株式会社鷺宮製作所 Valve element for four-way switching valve and method of manufacturing the same
JP2012082883A (en) * 2010-10-08 2012-04-26 Saginomiya Seisakusho Inc Valve element for channel switching valve
WO2015078197A1 (en) * 2013-11-29 2015-06-04 浙江三花制冷集团有限公司 Four-way reversing valve and slider thereof, and slider manufacturing method
JP2015200400A (en) * 2014-04-10 2015-11-12 株式会社鷺宮製作所 Valve body for flow passage changeover valve

Also Published As

Publication number Publication date
JP6559100B2 (en) 2019-08-14
CN107654694A (en) 2018-02-02
CN107654694B (en) 2019-05-21

Similar Documents

Publication Publication Date Title
JP4294683B2 (en) Four-way switching valve and air conditioner using the same
JP6407844B2 (en) Switching valve and refrigeration cycle
CN106246956B (en) Slidingtype switching valve and refrigerating circulation system
KR101279833B1 (en) End cover and four-way reversing valve using the same and assembling method thereof
JP2015048871A (en) Flow passage selector valve
CN106247004A (en) Throttling arrangement and air-conditioner
JP6559100B2 (en) Valve body, switching valve, valve body manufacturing method, and refrigeration cycle system
JP2017075675A (en) Slide type selector valve and refrigeration cycle system
KR20190001670U (en) Pipe connection structure, four-way valve and air conditioner
JP2010038320A (en) Valve element for four-way switching valve
CN105972283A (en) Valve main body of sliding changeover valve, sliding changeover valve, and air-conditioner
US9441752B2 (en) Valve housing and assembly unit comprising a valve housing and method of manufacturing a valve housing
JP6426644B2 (en) Sliding type switching valve and refrigeration cycle system
JP2017155887A (en) Slide type selector valve and refrigeration cycle system
CN109973682B (en) Electromagnetic directional valve and refrigeration system with same
JP6832266B2 (en) Sliding switching valve and refrigeration cycle system
CN102200191A (en) Reversing valve
JP6832299B2 (en) Sliding switching valve and refrigeration cycle system equipped with it
JP7120618B2 (en) spool valve
CN109563946B (en) Slide valve and refrigeration cycle system
CN110056675B (en) Sliding type switching valve and refrigeration cycle system provided with same
JP7373379B2 (en) Slide type switching valve and refrigeration cycle system
EP3677819B1 (en) Check valve assembly
CN208442415U (en) Pipe fitting joint structure, muffler, air-conditioning system and refrigeration system
CN104421456A (en) Valve device with slide valve, air conditioner and braze welding method of valve device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20171226

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20180119

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20180814

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20181128

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20190108

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20190214

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20190709

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20190716

R150 Certificate of patent or registration of utility model

Ref document number: 6559100

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150