JP7496840B2 - Throttle valve - Google Patents

Throttle valve Download PDF

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JP7496840B2
JP7496840B2 JP2021575484A JP2021575484A JP7496840B2 JP 7496840 B2 JP7496840 B2 JP 7496840B2 JP 2021575484 A JP2021575484 A JP 2021575484A JP 2021575484 A JP2021575484 A JP 2021575484A JP 7496840 B2 JP7496840 B2 JP 7496840B2
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passage
valve seat
positioning
header
throttle
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JP2022541727A (en
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治国 宋
忠波 馮
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Zhejiang Dunan Artificial Environment Co Ltd
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Zhejiang Dunan Artificial Environment Co Ltd
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    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/52—Means for additional adjustment of the rate of flow
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Safety Valves (AREA)

Description

本出願は、２０１９年０７月２２日に中国国家知識産権局に提出された、出願番号が２０１９２１１５２９７６．５であり、発明の名称が「絞り弁」である特許出願の優先権を主張している。 This application claims priority to a patent application filed with the State Intellectual Property Office of the People's Republic of China on July 22, 2019, bearing application number 201921152976.5 and entitled "Throttle Valve."

本出願は、絞り弁の技術分野に関し、具体的には絞り弁に関する。 This application relates to the technical field of throttle valves, and more specifically to throttle valves.

現在、絞り弁の内部の流量が大きいと、絞り弁のスピンドルの変位量が大きいため、絞り部を流れる液体の流量が大きくなり、これにより、コンプレッサシステムのエネルギー効率が低くなる。絞り弁の内部の流量が小さいと、絞り弁のスピンドルの変位量が小さいため、絞り部を流れる液体の流量が小さくなり、これにより、コンプレッサの吸気温度が高くなりすぎ、更には、システム全体の温度が上昇し続けることになる。従来技術の絞り弁は、実際の状況に応じて絞り部の流れ量を合理的に調節することができないため、コンプレッサ全体のエネルギー効率及び容量を効果的に確保することができない。 Currently, when the flow rate inside the throttle valve is large, the displacement of the throttle valve spindle is large, so the flow rate of liquid flowing through the throttle section is large, which results in low energy efficiency of the compressor system. When the flow rate inside the throttle valve is small, the displacement of the throttle valve spindle is small, so the flow rate of liquid flowing through the throttle section is small, which causes the intake temperature of the compressor to become too high, and even causes the temperature of the entire system to continue to rise. The throttle valve of the prior art cannot rationally adjust the flow rate of the throttle section according to actual conditions, so it cannot effectively ensure the energy efficiency and capacity of the entire compressor.

本出願の主な目的は、従来技術における、絞り弁の流量を調節しにくいという技術的問題を解決するための絞り弁を提供することにある。 The main objective of this application is to provide a throttle valve that solves the technical problem of the prior art, that is, the difficulty in adjusting the flow rate of the throttle valve.

上記の目的を達成するために、本出願は、流体通路を有する弁管と、弁管の流体通路内に設けられ、第１通路、絞り通路、及び第２通路を有し、第１通路は、絞り通路を介して第２通路に連通される弁座と、弁座内に移動可能に設けられ、本体部及び突起部を含み、本体部は、第２通路内に設けられ、突起部は、絞り通路の流れ容量を制御するために用いられるスピンドルと、第２通路内に設けられ、第１通路内の液体流量に応じて絞り通路内の液体流量を調節するように、一端がスピンドルに当接され、他端が弁座の少なくとも一部に当接される漸進的ばねと、を含む絞り弁を提供している。 To achieve the above object, the present application provides a throttle valve including: a valve pipe having a fluid passage; a valve seat provided in the fluid passage of the valve pipe and having a first passage, a throttle passage, and a second passage, the first passage being connected to the second passage via the throttle passage; a spindle movably provided in the valve seat and including a body portion and a protrusion, the body portion being provided in the second passage, the protrusion being used to control the flow capacity of the throttle passage; and a progressive spring provided in the second passage, one end of which abuts against the spindle and the other end of which abuts against at least a portion of the valve seat to adjust the liquid flow rate in the throttle passage according to the liquid flow rate in the first passage.

更に、漸進的ばねは、タワーばね又は可変ピッチばねである。 Furthermore, the progressive spring may be a tower spring or a variable pitch spring.

更に、本体部の側面は、位置決め側面及びドレイン面を含み、位置決め側面とドレイン面とは接続され、位置決め側面は、弁座の内壁面に対応し、ドレイン面と弁座の内壁との間には、流体間隙が形成される。 Furthermore, the side surface of the main body portion includes a positioning side surface and a drain surface, the positioning side surface and the drain surface are connected, the positioning side surface corresponds to the inner wall surface of the valve seat, and a fluid gap is formed between the drain surface and the inner wall of the valve seat.

更に、スピンドルは、第１取り付け部を更に含み、第１取り付け部は、本体部の突起部から離れた一端に設けられ、漸進的ばねの一端は、第１取り付け部に取り付けられる。 Furthermore, the spindle further includes a first mounting portion, the first mounting portion being provided at one end of the body portion remote from the protrusion portion, and one end of the progressive spring being attached to the first mounting portion.

更に、絞り弁は、弁座に設けられるヘッダを更に含み、ヘッダは、漸進的ばねのスピンドルから離れた一端に位置し、漸進的ばねの他端は、ヘッダの少なくとも一部に当接され、ヘッダには、第３通路が設けられて、流体通路が第３通路を介して第２通路に連通されるようにする。 The throttle valve further includes a header provided on the valve seat, the header being located at one end of the progressive spring remote from the spindle, the other end of the progressive spring abutting at least a portion of the header, and the header being provided with a third passage such that the fluid passage is connected to the second passage via the third passage.

更に、ヘッダは、本体部及び第２取り付け部を含み、漸進的ばねの他端は、第２取り付け部に設けられる。 Further, the header includes a body portion and a second mounting portion, and the other end of the progressive spring is provided to the second mounting portion.

更に、弁座は、弁座本体、及び弁座本体から延び出た第１位置決め部を含み、第１位置決め部は、かしめ又は溶接によってヘッダに固定される。 Furthermore, the valve seat includes a valve seat body and a first positioning portion extending from the valve seat body, and the first positioning portion is fixed to the header by crimping or welding.

更に、第１位置決め部は、第１位置決め突起を含み、第１位置決め突起は、フィッティングセグメント及び折り曲げセグメントを有し、フィッティングセグメントと折り曲げセグメントとは接続され、フィッティングセグメントは、弁座本体に設けられ、フィッティングセグメントの少なくとも一部は、ヘッダにフィットしてヘッダを位置決めし、折り曲げセグメントの少なくとも一部は、ヘッダの端部に当接してヘッダを位置決めする。 Furthermore, the first positioning portion includes a first positioning protrusion, the first positioning protrusion has a fitting segment and a bent segment, the fitting segment and the bent segment are connected, the fitting segment is provided on the valve seat body, at least a portion of the fitting segment fits into the header to position the header, and at least a portion of the bent segment abuts against an end of the header to position the header.

更に、弁管には、第２位置決め部が設けられ、第２位置決め部は、弁座の少なくとも一部に当接して、弁座を位置決めするために用いられる。 Furthermore, the valve pipe is provided with a second positioning portion, which abuts against at least a portion of the valve seat and is used to position the valve seat.

更に、第２位置決め部は、第２位置決め突起であり、弁座には、第２位置決め突起に係合される位置決め溝が設けられ、第２位置決め突起は、位置決め溝内に設けられて、弁座を位置決めする。 Furthermore, the second positioning portion is a second positioning protrusion, and the valve seat is provided with a positioning groove that engages with the second positioning protrusion, and the second positioning protrusion is provided within the positioning groove to position the valve seat.

本出願の技術態様を適用して、第２通路内に漸進的ばねを増設し、且つ漸進的ばねの一端をスピンドルに当接させ、漸進的ばねの他端を弁座に当接させる。漸進的ばねの変位量が小さいと、漸進的ばねの弾性率が小さく、漸進的ばねの変位量の増加につれて、漸進的ばねの弾性率が徐々に大きくなる。これにより、漸進的ばね自体のパラメータを制御することによって、第１通路内の流量の大きさに応じて絞り部の流れ量を制御しやすくすることができる。具体的には、漸進的ばねの作用下で、第１通路内の流量が小さいと、スピンドルの位置のずれ量が小さく、この場合、流量の増加につれて、スピンドルの位置のずれ量の変化が速くなって、流れ面積を急速に増加させやすくなる。第１通路内の流量が大きいと、スピンドルのずれ量が大きく、この場合、流量の増加につれて、スピンドルの位置ずれの変化が比較的に緩やかになり、ひいては、ほぼ変わらない状況が生じ、これにより、流量が大きい場合に、流れ面積の増加を制限して、高圧流量を制限することができる。従って、本出願によって提供される技術態様を採用すると、従来技術における、絞り弁の流量を調節しにくいという技術的問題を解決することができる。 By applying the technical aspect of the present application, a progressive spring is added in the second passage, and one end of the progressive spring is abutted against the spindle, and the other end of the progressive spring is abutted against the valve seat. When the displacement of the progressive spring is small, the elastic modulus of the progressive spring is small, and as the displacement of the progressive spring increases, the elastic modulus of the progressive spring gradually increases. This makes it easier to control the flow rate of the throttle section according to the magnitude of the flow rate in the first passage by controlling the parameters of the progressive spring itself. Specifically, under the action of the progressive spring, when the flow rate in the first passage is small, the deviation of the position of the spindle is small, and in this case, as the flow rate increases, the change in the deviation of the position of the spindle becomes faster, making it easier to rapidly increase the flow area. When the flow rate in the first passage is large, the deviation of the spindle is large, and in this case, as the flow rate increases, the change in the deviation of the spindle becomes relatively gradual, and thus a situation occurs where the flow rate remains almost unchanged, so that when the flow rate is large, the increase in the flow area can be limited to limit the high-pressure flow rate. Therefore, by adopting the technical aspects provided by this application, it is possible to solve the technical problem in the prior art of making it difficult to adjust the flow rate of the throttle valve.

本出願の一部を構成する明細書の図面は、本出願に対する更なる理解を提供するためのものであり、本出願の模式的な実施例及びその説明は、本出願を解釈するためのものであり、本出願を不適切に限定するものではない。 The drawings in the specification which form part of this application are intended to provide further understanding of the application, and the schematic examples and their explanations are intended to aid in the interpretation of the application and are not intended to inappropriately limit the application.

本出願の実施例によって提供される絞り弁の構成模式図を示す。1 shows a schematic diagram of a throttle valve provided by an embodiment of the present application. 図１におけるＩ部分の部分拡大模式図を示す。2 is a partially enlarged schematic diagram of part I in FIG. 1 . 本出願の実施例によって提供される絞り弁の断面図を示す。1 shows a cross-sectional view of a throttle valve provided by an embodiment of the present application. 本出願の実施例によって提供される可変ピッチばねである漸進的ばねの正面図を示す。FIG. 2 shows a front view of a progressive spring, which is a variable pitch spring provided by an embodiment of the present application. 本出願の実施例によって提供される可変ピッチばねである漸進的ばねの上面図を示す。FIG. 2 shows a top view of a progressive spring, which is a variable pitch spring provided by an embodiment of the present application. 本出願の実施例によって提供されるタワーばねである漸進的ばねの正面図を示す。FIG. 1 shows a front view of a progressive spring, which is a tower spring provided by an embodiment of the present application. 本出願の実施例によって提供されるタワーばねである漸進的ばねの上面図を示す。FIG. 2 shows a top view of a progressive spring, which is a tower spring provided by an embodiment of the present application. 本出願の実施例によって提供されるスピンドルの上昇量と絞り部の流れ面積との関係の模式図を示す。FIG. 1 is a schematic diagram showing the relationship between the amount of spindle lift and the flow area of the throttling section provided by an embodiment of the present application. 本出願の実施例によって提供されるスピンドルの上昇量と絞り弁の前後の圧力差との関係の模式図を示す。1 shows a schematic diagram of the relationship between the amount of spindle lift and the pressure difference across a throttle valve provided by an embodiment of the present application.

ここで、上記の図面には以下の符号が含まれる。
１０ 弁管、１１ 第２位置決め突起、２０ 弁座、２１ 弁座本体、２２ 第１位置決め部、２２１ フィッティングセグメント、２２２ 折り曲げセグメント、２３ 位置決め溝、３０ スピンドル、３１ 本体部、３１１ ドレイン面、３２ 突起部、３３ 第１取り付け部、４０ 漸進的ばね、５０ ヘッダ、５１ 本体部、５２ 第２取り付け部、５３ 第３通路。 Here, the above drawings include the following reference numbers:
10 valve pipe, 11 second positioning protrusion, 20 valve seat, 21 valve seat body, 22 first positioning portion, 221 fitting segment, 222 bent segment, 23 positioning groove, 30 spindle, 31 body portion, 311 drain surface, 32 protrusion portion, 33 first mounting portion, 40 progressive spring, 50 header, 51 body portion, 52 second mounting portion, 53 third passage.

なお、矛盾しない限り、本出願における実施例及び実施例における特徴は互いに組み合わせることができる。以下、図面を参照して実施例と併せて本発明を詳細に説明する。 Note that, unless contradictory, the embodiments and features of the embodiments in this application may be combined with each other. The present invention will be described in detail below in conjunction with the embodiments with reference to the drawings.

図１から図９に示すように、本出願の実施例は、弁管１０、弁座２０、スピンドル３０、及び漸進的ばね４０を含む絞り弁を提供している。ここで弁管１０は、流体通路を有する。弁座２０は弁管１０の流体通路内に設けられ、弁座２０は、第１通路、絞り通路、及び第２通路を有し、第１通路は絞り通路を介して第２通路に連通される。スピンドル３０は弁座２０内に移動可能に設けられ、本体部３１及び突起部３２を含み、本体部３１は第２通路内に設けられ、突起部３２は絞り通路の流れ容量を制御するために用いられ、具体的には、絞り通路の導通又は遮断を制御することを含む。漸進的ばね４０は第２通路内に設けられ、第１通路内の液体流量に応じて絞り通路内の液体流量を調節するように、漸進的ばね４０の一端がスピンドル３０の少なくとも一部に当接され、他端が弁座２０に当接される。本実施例における絞り弁は、主にコンプレッサに用いられる。具体的には、本実施例における漸進的ばね４０の一端は、スピンドル３０の端部に当接される。 1 to 9, an embodiment of the present application provides a throttle valve including a valve pipe 10, a valve seat 20, a spindle 30, and a progressive spring 40. Here, the valve pipe 10 has a fluid passage. The valve seat 20 is provided in the fluid passage of the valve pipe 10, and the valve seat 20 has a first passage, a throttle passage, and a second passage, and the first passage is communicated with the second passage through the throttle passage. The spindle 30 is movably provided in the valve seat 20 and includes a body portion 31 and a protrusion portion 32, the body portion 31 is provided in the second passage, and the protrusion portion 32 is used to control the flow capacity of the throttle passage, specifically, including controlling the conduction or blocking of the throttle passage. The progressive spring 40 is provided in the second passage, and one end of the progressive spring 40 abuts against at least a part of the spindle 30 and the other end abuts against the valve seat 20 so as to adjust the liquid flow rate in the throttle passage according to the liquid flow rate in the first passage. The throttle valve in this embodiment is mainly used in compressors. Specifically, in this embodiment, one end of the progressive spring 40 abuts against the end of the spindle 30.

本実施例によって提供される絞り弁を採用すると、第２通路内に漸進的ばね４０が増設されるため、漸進的ばね４０の変位量の増加につれて漸進的ばね４０の弾性率が増加する。具体的には、漸進的ばね４０の変位量が小さいと漸進的ばね４０の弾性率が小さく、漸進的ばね４０の変位量が大きいと漸進的ばね４０の弾性率が大きい。これにより、漸進的ばね４０自体のパラメータを調節することによって、第１通路内の流量の大きさに応じて絞り部の流れ量を制御しやすくすることができる。具体的には、漸進的ばね４０の作用下で、第１通路内の流量が小さいとスピンドル３０の位置のずれ量が小さく、この場合、流量の増加につれて、スピンドル３０の位置のずれ量の変化が速くなって、流れ面積を急速に増加させやすくなり、コンプレッサの吸気温度が高くなりすぎるのを防ぎ、更には、コンプレッサの使用寿命を延ばすことができる。第１通路内の流量が大きいとスピンドル３０のずれ量が大きく、この場合、流量の増加につれて、スピンドル３０の位置ずれの変化が比較的に緩やかになり、ひいてはほぼ変わらない状況が生じ、これにより、流量が大きい場合に、流れ面積の増加を制限して、高圧流量を制限することができ、更にはコンプレッサ全体の効率及び容量を確保している。 When the throttle valve provided by this embodiment is adopted, the progressive spring 40 is added in the second passage, so that the elastic modulus of the progressive spring 40 increases as the displacement of the progressive spring 40 increases. Specifically, when the displacement of the progressive spring 40 is small, the elastic modulus of the progressive spring 40 is small, and when the displacement of the progressive spring 40 is large, the elastic modulus of the progressive spring 40 is large. This makes it easier to control the flow rate of the throttle section according to the magnitude of the flow rate in the first passage by adjusting the parameters of the progressive spring 40 itself. Specifically, under the action of the progressive spring 40, when the flow rate in the first passage is small, the positional deviation of the spindle 30 is small. In this case, as the flow rate increases, the change in the positional deviation of the spindle 30 becomes faster, making it easier to rapidly increase the flow area, preventing the intake temperature of the compressor from becoming too high, and further extending the service life of the compressor. When the flow rate in the first passage is large, the deviation of the spindle 30 is large. In this case, as the flow rate increases, the change in the position deviation of the spindle 30 becomes relatively gradual, and ultimately remains almost unchanged. This limits the increase in the flow area when the flow rate is large, thereby limiting the high-pressure flow rate and ensuring the efficiency and capacity of the entire compressor.

図４から図７に示すように、本実施例において、漸進的ばね４０はタワーばね又は可変ピッチばねであってよい。具体的には、本実施例におけるタワーばねはステップばねを指し、可変ピッチばねは可変螺旋ピッチばねを指す。具体的には、タワーばね又は可変ピッチばねの作用下で、タワーばね又は可変ピッチばねの変位量が小さいとタワーばね又は可変ピッチばねの弾性率が小さいため、流量が小さい場合に、流れ面積を急速に増加させやすい。タワーばね又は可変ピッチばねの変位量が大きいとタワーばね又は可変ピッチばねの弾性率が大きく、この場合、タワーばね又は可変ピッチばねの変位量の変化に対する流量の変化の影響が極めて小さく、ひいては、流量が増加しても、変位量がほとんど変わらない状況が生じて、高圧流量を制限することができる。 As shown in Figures 4 to 7, in this embodiment, the progressive spring 40 may be a tower spring or a variable pitch spring. Specifically, the tower spring in this embodiment refers to a step spring, and the variable pitch spring refers to a variable helical pitch spring. Specifically, under the action of the tower spring or variable pitch spring, when the displacement amount of the tower spring or variable pitch spring is small, the elastic modulus of the tower spring or variable pitch spring is small, so that when the flow rate is small, the flow area is likely to increase rapidly. When the displacement amount of the tower spring or variable pitch spring is large, the elastic modulus of the tower spring or variable pitch spring is large, in this case, the influence of the change in the displacement amount of the tower spring or variable pitch spring on the change in the flow rate is extremely small, and even if the flow rate increases, a situation occurs in which the displacement amount remains almost unchanged, so that the high pressure flow rate can be restricted.

具体的には、タワーばね又は可変ピッチばねは、スピンドル３０の上昇量（変位量）と絞り部の絞り面積との関係を変えることができ、低圧力差において製品の流量が小さすぎる、コンプレッサの吸気温度が高すぎる、システム全体の温度が上昇し続けるという問題を減らすと同時に、高圧力差において製品の流量が大きすぎる、システムのエネルギー効率が低い、という問題を改善することができる。 Specifically, the tower spring or variable pitch spring can change the relationship between the amount of rise (displacement) of the spindle 30 and the throttling area of the throttling section, reducing the problems of the product flow rate being too small at low pressure differentials, the compressor intake temperature being too high, and the temperature of the entire system continuing to rise, while at the same time improving the problems of the product flow rate being too large at high pressure differentials and the energy efficiency of the system being low.

同時に、タワーばね又は可変ピッチばねは、スピンドル３０の上昇量（変位変化量）と弁の前後の圧力差との関係を変えることもでき、低圧力差において製品の流量が小さすぎる、コンプレッサの吸気温度が高すぎる、システム全体の温度が上昇し続ける、という問題を減らすと同時に、高圧力差において製品の流量が大きすぎる、システムのエネルギー効率が低い、という問題を改善することができる。 At the same time, the tower spring or variable pitch spring can change the relationship between the amount of lift (displacement change) of the spindle 30 and the pressure difference before and after the valve, reducing the problems of the product flow rate being too small at low pressure differences, the compressor intake temperature being too high, and the temperature of the entire system continuing to rise, while at the same time improving the problems of the product flow rate being too large at high pressure differences and the energy efficiency of the system being low.

本実施例において、本体部３１の側面は位置決め側面及びドレイン面３１１を含み、位置決め側面とドレイン面３１１とは接続され、位置決め側面は、弁座２０の内壁面に対応することによって、位置決め側面を介して、スピンドル３０を第２通路内で移動するように案内しやすくする。本実施例における本体部３１の横断面積は第２通路の横断面積よりも小さく、具体的には、ドレイン面３１１と弁座２０の内壁との間に流体間隙が形成されて、絞り通路内の液体が流体間隙を経由して流出するようにする。具体的には、本実施例におけるドレイン面３１１は、内側凹面又は平面であってよい。 In this embodiment, the side of the body 31 includes a positioning side and a drain surface 311, the positioning side and the drain surface 311 are connected, and the positioning side corresponds to the inner wall surface of the valve seat 20, thereby guiding the spindle 30 to move in the second passage through the positioning side. The cross-sectional area of the body 31 in this embodiment is smaller than the cross-sectional area of the second passage, specifically, a fluid gap is formed between the drain surface 311 and the inner wall of the valve seat 20, so that the liquid in the throttle passage flows out through the fluid gap. Specifically, the drain surface 311 in this embodiment may be an inner concave surface or a flat surface.

具体的には、本実施例におけるスピンドル３０は第１取り付け部３３を更に含み、第１取り付け部３３は本体部３１の突起部３２から離れた一端に設けられ、漸進的ばね４０の一端は第１取り付け部３３に取り付けられる。このような設定を採用すると、漸進的ばね４０の一端を本体部３１の端部に当接させて、漸進的ばね４０を位置決めしやすくすることができる。具体的には、本実施例における第１取り付け部３３は、第１取り付け突起又は第１取り付け溝であってよく、第１取り付け部３３が第１取り付け突起である場合、漸進的ばね４０の一端は、第１取り付け突起上に嵌合され、第１取り付け部３３が第１取り付け溝である場合、漸進的ばね４０の一端は、第１取り付け溝内に設けられ、第１取り付け溝によって漸進的ばね４０の一端が取り付けられて、漸進的ばね４０を位置決めする。 Specifically, the spindle 30 in this embodiment further includes a first mounting portion 33, which is provided at one end of the main body portion 31 away from the protrusion portion 32, and one end of the incremental spring 40 is attached to the first mounting portion 33. By adopting such a setting, one end of the incremental spring 40 can be abutted against the end of the main body portion 31, making it easier to position the incremental spring 40. Specifically, the first mounting portion 33 in this embodiment may be a first mounting protrusion or a first mounting groove, and when the first mounting portion 33 is the first mounting protrusion, one end of the incremental spring 40 is fitted onto the first mounting protrusion, and when the first mounting portion 33 is the first mounting groove, one end of the incremental spring 40 is provided in the first mounting groove, and one end of the incremental spring 40 is attached by the first mounting groove to position the incremental spring 40.

本実施例において、絞り弁はヘッダ５０を更に含み、ヘッダ５０は弁座２０に設けられ、漸進的ばね４０のスピンドル３０から離れた一端に位置し、漸進的ばね４０の他端はヘッダ５０の少なくとも一部に当接されて、漸進的ばね４０を位置決めしやすくする。ヘッダ５０には第３通路５３が設けられて、流体通路が第３通路５３を介して第２通路に連通されるようにする。本実施例において、第３通路５３をヘッダ５０の中部に設けて、第２通路と流体通路とがより良く連通されるようにしてもよい。 In this embodiment, the throttle valve further includes a header 50, which is provided on the valve seat 20 and located at one end of the progressive spring 40 away from the spindle 30, and the other end of the progressive spring 40 abuts at least a portion of the header 50 to facilitate positioning of the progressive spring 40. A third passage 53 is provided in the header 50 so that the fluid passage is connected to the second passage via the third passage 53. In this embodiment, the third passage 53 may be provided in the middle of the header 50 to better connect the second passage and the fluid passage.

具体的には、本実施例におけるヘッダ５０は本体部５１及び第２取り付け部５２を含み、漸進的ばね４０の他端は第２取り付け部５２に設けられる。具体的には、第２取り付け部５２は、第２取り付け突起又は第２取り付け溝であってよく、第２取り付け部５２が第２取り付け突起である場合、漸進的ばね４０の他端は、第２取り付け突起上に嵌合され、第２取り付け部５２が第２取り付け溝である場合、漸進的ばね４０の他端は、第２取り付け溝内に設けられ、第２取り付け溝によって漸進的ばね４０の他端が取り付けられて、漸進的ばね４０を位置決めする。このような設定を採用すると、漸進的ばね４０の他端を本体部５１に当接させて、漸進的ばね４０をより良く位置決めしやすくすることができることによって、漸進的ばね４０をヘッダ５０とスピンドル３０との間で安定して変形させることができる。 Specifically, the header 50 in this embodiment includes a body portion 51 and a second mounting portion 52, and the other end of the progressive spring 40 is provided on the second mounting portion 52. Specifically, the second mounting portion 52 may be a second mounting protrusion or a second mounting groove. When the second mounting portion 52 is the second mounting protrusion, the other end of the progressive spring 40 is fitted onto the second mounting protrusion, and when the second mounting portion 52 is the second mounting groove, the other end of the progressive spring 40 is provided in the second mounting groove, and the other end of the progressive spring 40 is attached by the second mounting groove to position the progressive spring 40. By adopting such a setting, the other end of the progressive spring 40 can be abutted against the body portion 51 to make it easier to position the progressive spring 40, thereby allowing the progressive spring 40 to be stably deformed between the header 50 and the spindle 30.

弁座２０は、弁座本体２１、及び弁座本体２１から延び出た第１位置決め部２２を含み、第１位置決め部２２は弁座本体２１の上端に設けられて、ヘッダ５０を位置決めする。第１位置決め部２２は、かしめ、溶接、又はねじ接続によってヘッダ５０に固定される。具体的には、本実施例における第１位置決め部２２は、弁座本体２１の端部に設けられる。 The valve seat 20 includes a valve seat body 21 and a first positioning portion 22 extending from the valve seat body 21. The first positioning portion 22 is provided at the upper end of the valve seat body 21 to position the header 50. The first positioning portion 22 is fixed to the header 50 by crimping, welding, or a screw connection. Specifically, in this embodiment, the first positioning portion 22 is provided at the end of the valve seat body 21.

第１位置決め部２２は第１位置決め突起を含み、第１位置決め突起はフィッティングセグメント２２１及び折り曲げセグメント２２２を有し、フィッティングセグメント２２１と折り曲げセグメント２２２とは接続され、フィッティングセグメント２２１は弁座本体２１に設けられる。フィッティングセグメント２２１の少なくとも一部はヘッダ５０にフィットしてヘッダ５０を位置決めし、フィッティングセグメント２２１と弁座本体２１の端部とは位置決め段差を形成し、ヘッダ５０は、この位置決め段差に挟まって設けられ、折り曲げセグメント２２２の少なくとも一部は、ヘッダ５０の端部に当接してヘッダ５０を位置決めする。このような設定を採用すると、フィッティングセグメント２２１及び折り曲げセグメント２２２によって、ヘッダ５０を安定して位置決めすることができ、使用過程において、ヘッダ５０の位置にずれが生じることを防ぎ、構造全体の安定性を高めている。 The first positioning portion 22 includes a first positioning protrusion, which has a fitting segment 221 and a bent segment 222, and the fitting segment 221 and the bent segment 222 are connected, and the fitting segment 221 is provided on the valve seat body 21. At least a part of the fitting segment 221 fits into the header 50 to position the header 50, and the fitting segment 221 and the end of the valve seat body 21 form a positioning step, the header 50 is provided between the positioning step, and at least a part of the bent segment 222 abuts against the end of the header 50 to position the header 50. By adopting such a setting, the fitting segment 221 and the bent segment 222 can stably position the header 50, preventing the position of the header 50 from shifting during use and improving the stability of the entire structure.

使用過程において、弁座２０に位置ずれが生じることを防ぐために、本実施例では弁管１０に第２位置決め部を設ける。第２位置決め部は、弁座２０が弁管１０に安定して設けられるように、弁座２０の少なくとも一部に当接して、弁座２０を位置決めするために用いられる。 In order to prevent the valve seat 20 from shifting position during use, in this embodiment, a second positioning portion is provided on the valve pipe 10. The second positioning portion is used to abut against at least a portion of the valve seat 20 and position the valve seat 20 so that the valve seat 20 is stably installed on the valve pipe 10.

具体的には、本実施例における第２位置決め部は第２位置決め突起１１であり、弁座２０には第２位置決め突起１１に係合される位置決め溝２３が設けられる。第２位置決め突起１１が位置決め溝２３内に設けられて、弁座２０を位置決めすることで、弁座２０を弁管１０に安定して設けることができる。他の実施例において、第２位置決め部は雌ねじ構造であり、弁座２０には雌ねじに係合される雄ねじ構造が設けられ、雌雄ねじの互いの係合によって固定及び取り付けを行って、同様の効果を得てもよい。 Specifically, in this embodiment, the second positioning portion is the second positioning protrusion 11, and the valve seat 20 is provided with a positioning groove 23 that engages with the second positioning protrusion 11. The second positioning protrusion 11 is provided within the positioning groove 23 to position the valve seat 20, thereby enabling the valve seat 20 to be stably provided on the valve pipe 10. In other embodiments, the second positioning portion is a female thread structure, and the valve seat 20 is provided with a male thread structure that engages with the female thread, and fixing and attachment are performed by mutual engagement of the female and male threads, thereby achieving a similar effect.

図８において、Ｌはスピンドル３０の上昇量（変位変化量）を表し、Ｓは絞り通路の流れ面積を表す。図８に示すように、スピンドル３０の上昇量が小さいと、流れ面積が急速に増加して、吸気温度が高すぎてコンプレッサの使用寿命に影響を与えることを防ぐ。スピンドル３０の上昇量が大きいと、流れ面積の変化が比較的に緩やかになって、流れ面積の増加を制限し、更には、高圧流量を制限して、機械全体のエネルギー効率及び容量を確保している。 In Figure 8, L represents the amount of rise (displacement change) of the spindle 30, and S represents the flow area of the throttle passage. As shown in Figure 8, when the amount of rise of the spindle 30 is small, the flow area increases rapidly, preventing the intake temperature from becoming too high and affecting the compressor's service life. When the amount of rise of the spindle 30 is large, the change in the flow area becomes relatively gradual, limiting the increase in the flow area and further limiting the high-pressure flow rate, thereby ensuring the energy efficiency and capacity of the entire machine.

図９において、Ｌはスピンドル３０の上昇量（変位変化量）を表し、Ｐは絞り弁の前後の圧力差を表す。図９に示すように、スピンドル３０の上昇量が小さいと、弁の前後の圧力差の変化が速くなって、流れ面積を増加させやすくなり、流量が小さくなりすぎる状況を防ぎ、スピンドル３０の上昇量が大きいと、弁の前後の圧力差の変化が緩やかになる。 In Figure 9, L represents the amount of rise (amount of displacement change) of the spindle 30, and P represents the pressure difference before and after the throttle valve. As shown in Figure 9, when the amount of rise of the spindle 30 is small, the pressure difference before and after the valve changes quickly, making it easier to increase the flow area and preventing a situation in which the flow rate becomes too small, and when the amount of rise of the spindle 30 is large, the pressure difference before and after the valve changes more slowly.

以上の説明から、本出願の上述した実施例は、漸進的ばね４０によって、絞り部の流量の大きさを制御しやすくすることができ、吸気温度が高くなりすぎるのを防ぎ、コンプレッサの使用寿命を延ばしており、高圧流量を制限して、機械全体のエネルギー効率及び容量を確保しており、構造が簡単で信頼性があるという技術効果を実現していることが分かる。 From the above explanation, it can be seen that the above-mentioned embodiment of the present application realizes the technical effects of using the progressive spring 40 to easily control the amount of flow at the throttling section, preventing the intake temperature from becoming too high and extending the service life of the compressor, limiting the high-pressure flow rate to ensure the energy efficiency and capacity of the entire machine, and being simple in structure and reliable.

上述したものは、本出願の好ましい実施例にすぎず、本出願を制限するためのものではなく、当業者にとって本出願は様々な変更及び変化が可能である。本出願の精神及び原則の範囲内でなされたいかなる修正、同等の置換、改良等は、何れも本出願の保護範囲内に含まれるべきである。 The above is merely a preferred embodiment of the present application, and is not intended to limit the present application. Various modifications and variations of the present application are possible for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included within the scope of protection of the present application.

Claims (9)

絞り弁であって、
流体通路を有する弁管（１０）と、
前記弁管（１０）の流体通路内に設けられ、第１通路、絞り通路、及び第２通路を有する弁座（２０）であって、前記第１通路が前記絞り通路を介して前記第２通路に連通されている弁座（２０）と、
前記弁座（２０）内に移動可能に設けられ、本体部（３１）及び突起部（３２）を含むスピンドル（３０）であって、前記本体部（３１）が前記第２通路内に設けられ、前記突起部（３２）が前記絞り通路の流れ容量を制御するために用いられるスピンドル（３０）と、
前記第２通路内に設けられ、前記第１通路内の液体流量に応じて前記絞り通路内の液体流量を調節するように、一端が前記スピンドル（３０）に当接され、他端が前記弁座（２０）の少なくとも一部に当接された漸進的ばね（４０）と、
を含み、
前記絞り弁は、前記弁座（２０）に設けられているヘッダ（５０）を更に含み、
前記ヘッダ（５０）は、前記漸進的ばね（４０）の前記スピンドル（３０）から離れた一端に位置し、前記漸進的ばね（４０）の他端は、前記ヘッダ（５０）の少なくとも一部に当接され、
前記ヘッダ（５０）には、第３通路（５３）が設けられて、前記流体通路が前記第３通路（５３）を介して前記第２通路に連通されており、
前記弁座（２０）は、弁座本体（２１）、及び弁座本体（２１）から延び出た第１位置決め部（２２）を含み、
前記第１位置決め部（２２）は、前記ヘッダ（５０）を位置決めするように前記弁座（２０）の内部へ向けて曲げられた部分を備えた第１位置決め突起を含む、
絞り弁。 A throttle valve,
A valve pipe (10) having a fluid passage;
a valve seat (20) provided in a fluid passage of the valve pipe (10), the valve seat having a first passage, a throttle passage, and a second passage, the first passage being in communication with the second passage via the throttle passage;
a spindle (30) movably disposed within the valve seat (20), the spindle including a body portion (31) and a protrusion portion (32), the body portion (31) being disposed within the second passage, the protrusion portion (32) being used to control the flow capacity of the throttle passage;
a progressive spring (40) provided in the second passage, one end of which is in contact with the spindle (30) and the other end of which is in contact with at least a portion of the valve seat (20) so as to adjust the liquid flow rate in the throttle passage in response to the liquid flow rate in the first passage;
Including,
The throttle valve further includes a header (50) disposed on the valve seat (20);
the header (50) is located at one end of the progressive spring (40) away from the spindle (30), and the other end of the progressive spring (40) abuts against at least a portion of the header (50);
The header (50) is provided with a third passage (53), and the fluid passage is communicated with the second passage via the third passage (53).
The valve seat (20) includes a valve seat body (21) and a first positioning portion (22) extending from the valve seat body (21),
The first positioning portion (22) includes a first positioning protrusion having a portion bent toward the inside of the valve seat (20) so as to position the header (50).
Throttle valve. 前記漸進的ばね（４０）は、タワーばね又は可変ピッチばねである、請求項１に記載の絞り弁。 The throttle valve of claim 1, wherein the progressive spring (40) is a tower spring or a variable pitch spring. 前記本体部（３１）の側面は、位置決め側面及びドレイン面（３１１）を含み、前記位置決め側面は、前記弁座（２０）の内壁面に対応し、前記ドレイン面（３１１）と前記弁座（２０）の内壁との間には、流体間隙が形成されている、請求項１に記載の絞り弁。 The throttle valve according to claim 1, wherein the side of the body portion (31) includes a positioning side and a drain surface (311), the positioning side corresponds to the inner wall surface of the valve seat (20), and a fluid gap is formed between the drain surface (311) and the inner wall of the valve seat (20). 前記スピンドル（３０）は第１取り付け部（３３）を更に含み、前記第１取り付け部（３３）は、前記本体部（３１）の前記突起部（３２）から離れた一端に設けられ、前記漸進的ばね（４０）の一端は、前記第１取り付け部（３３）に取り付けられている、請求項１に記載の絞り弁。 The throttle valve of claim 1, wherein the spindle (30) further includes a first mounting portion (33), the first mounting portion (33) is provided at one end of the body portion (31) remote from the protrusion portion (32), and one end of the progressive spring (40) is attached to the first mounting portion (33). 前記ヘッダ（５０）は、本体部（５１）及び第２取り付け部（５２）を含み、前記漸進的ばね（４０）の他端は、前記第２取り付け部（５２）に設けられている、請求項１に記載の絞り弁。 The throttle valve of claim 1, wherein the header (50) includes a body portion (51) and a second mounting portion (52), and the other end of the progressive spring (40) is provided on the second mounting portion (52). 前記第１位置決め部（２２）は、かしめ又は溶接によって前記ヘッダ（５０）に固定されている、請求項１に記載の絞り弁。 The throttle valve of claim 1, wherein the first positioning portion (22) is fixed to the header (50) by crimping or welding. 前記第１位置決め突起は、フィッティングセグメント（２２１）及び折り曲げセグメント（２２２）を有し、前記フィッティングセグメント（２２１）と前記折り曲げセグメント（２２２）とは接続されており、前記フィッティングセグメント（２２１）は、前記弁座本体（２１）に設けられており、前記フィッティングセグメント（２２１）の少なくとも一部は、前記ヘッダ（５０）にフィットして前記ヘッダ（５０）を位置決めし、前記折り曲げセグメント（２２２）の少なくとも一部は、前記ヘッダ（５０）の端部に当接して前記ヘッダ（５０）を位置決めする、請求項６に記載の絞り弁。 7. The throttle valve according to claim 6, wherein the first positioning projection has a fitting segment (221) and a bent segment (222), the fitting segment (221) and the bent segment (222) are connected, the fitting segment (221) is provided on the valve seat body (21), at least a portion of the fitting segment (221) fits into the header (50) to position the header (50), and at least a portion of the bent segment (222) abuts against an end of the header (50) to position the header (50). 前記弁管（１０）には、第２位置決め部が設けられており、前記第２位置決め部は、前記弁座（２０）の少なくとも一部に当接して、前記弁座（２０）を位置決めするために用いられる、請求項１に記載の絞り弁。 The throttle valve according to claim 1, wherein the valve pipe (10) is provided with a second positioning portion, and the second positioning portion is used to position the valve seat (20) by abutting at least a portion of the valve seat (20). 前記第２位置決め部は、第２位置決め突起（１１）であり、前記弁座（２０）には、前記第２位置決め突起（１１）に係合される位置決め溝（２３）が設けられており、前記第２位置決め突起（１１）は、前記位置決め溝（２３）内に設けられて、前記弁座（２０）を位置決めする、請求項８に記載の絞り弁。 The throttle valve according to claim 8, wherein the second positioning portion is a second positioning protrusion (11), the valve seat (20) is provided with a positioning groove (23) that engages with the second positioning protrusion (11), and the second positioning protrusion (11) is provided within the positioning groove (23) to position the valve seat (20).
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