JP2002257249A - Electric-operated flow control valve - Google Patents
Electric-operated flow control valveInfo
- Publication number
- JP2002257249A JP2002257249A JP2001057867A JP2001057867A JP2002257249A JP 2002257249 A JP2002257249 A JP 2002257249A JP 2001057867 A JP2001057867 A JP 2001057867A JP 2001057867 A JP2001057867 A JP 2001057867A JP 2002257249 A JP2002257249 A JP 2002257249A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- rotor
- valve seat
- throttle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 claims abstract description 15
- 238000005057 refrigeration Methods 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 2
- 241000255777 Lepidoptera Species 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Multiple-Way Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Sliding Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷蔵庫の冷蔵循環
サイクルと冷凍循環サイクルを切り替えるなどの流路を
切換えると共に各弁口の流量を自由に制御できる制御弁
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control valve for switching a flow path such as switching between a refrigeration circulation cycle and a refrigeration circulation cycle of a refrigerator and for freely controlling the flow rate of each valve port.
【０００２】[0002]
【従来の技術】図４は、本願出願人が特願平２０００−
９３５８３号にて出願している従来の制御弁の構造であ
り、以下にその構成を説明する。従来の制御弁は密閉ケ
ース１とコイル２と弁座シート３とシャフト４とロータ
５と弁体６とストッパー７と圧縮コイルばね８とにより
構成されている。2. Description of the Related Art FIG.
This is the structure of a conventional control valve filed in Japanese Patent Application No. 93583, and its configuration will be described below. The conventional control valve includes a closed case 1, a coil 2, a valve seat 3, a shaft 4, a rotor 5, a valve body 6, a stopper 7, and a compression coil spring 8.
【０００３】密閉ケース１は、逆有底筒状に形成され段
差部１ａを有しており、該密閉ケース１の外方にはコイ
ル２が配置され、またケースの開口下端部には弁座シー
ト３が気密的に固定されている。そして、前記の弁座シ
ート３の上面には、中心部に軸穴３ａを設けると共に、
入り口通路８に連通する弁口３ｂ並び複数の出口通路９
に連通する複数の弁口Ｉ３ｃ、弁口II３ｄが設けられ、
さらに後述するストッパー７の位置決め穴３ｅが設けら
れている。The sealed case 1 is formed in an inverted bottomed cylindrical shape and has a stepped portion 1a. A coil 2 is disposed outside the sealed case 1, and a valve seat is provided at a lower end of the opening of the case. sheet 3 is airtightly fixed. A shaft hole 3a is provided at the center on the upper surface of the valve seat 3, and
Valve port 3b arrangement plurality of outlet passages 9 communicating with the inlet passage 8
A plurality of valve port I3c, the valve port II3d provided which communicates with,
Positioning hole 3e of the stopper 7 is provided to further below.
【０００４】シャフト４は、その上端部が前記ケースの
軸穴１ｂで支持されると共に下端部が弁座シートの軸穴
３ａにて支持されるようになっており、該シャフト４に
は、上方より圧縮コイルばね８とロータ５と弁体６が配
置されている。[0004] Shaft 4 is adapted to the lower end with the upper end is supported by the shaft hole 1b of the case is supported by the valve seat sheet shaft hole 3a, to the shaft 4, upper Further, a compression coil spring 8, a rotor 5, and a valve body 6 are arranged.
【０００５】ロータ５には、その下端部に弁体を回動さ
せる係止部５ａが設けられると共に、該係止部５ａと対
峙し且つ下方へ下がった位置に後述するストッパー７に
当接する当接部５ｂが設けられている。[0005] The rotor 5 is in contact with the engaging portion 5a for rotating the valve member at its lower end is provided, the stopper 7 which will be described later down position to and downwardly to face the engaging portion 5a those contact portion 5b is provided.
【０００６】弁体６には、上面から上方に伸び、前記の
係止部５ａと当接させる回転伝達部６ａが設けられると
共に、下面には弁座シート３の弁口Ｉ３ｃ、弁口II３ｄ
を開閉並びに全閉から全開の領域に渡って流量を任意に
絞り制御させる制御部６ｃが設けられている。The valve body 6 is provided with a rotation transmitting portion 6a extending upward from the upper surface and brought into contact with the locking portion 5a, and has a valve opening I3c and a valve opening II3d of the valve seat 3 on the lower surface.
There is provided a control unit 6c for arbitrarily restricting and controlling the flow rate over the range from the fully open to the fully closed to the fully open.
【０００７】図５に示す制御部６ｃの形状は、インボリ
ュート曲線のカム板形状等に形成されており、図に示す
矢印のほうこうに弁体６が回転した時には、一方の出口
弁口が全閉から全開になる間（約弁体の半回転）は、他
方の出口弁口が閉じるようになっている。また、弁座シ
ート３に設けられる弁口Ｉ３ｃ 、弁口II３ｄは、ほぼ
軸対象の位置に対向させて設けられているが、カム板形
状の形態によっては必ずしも軸対象の位置に対向させな
くてもよいとなっている。The control section 6c shown in FIG. 5 is formed in the shape of a cam plate having an involute curve, and when the valve body 6 rotates in the direction of the arrow shown in the figure, one of the outlet valve ports is fully closed. while the fully opened (a half rotation of Yakubentai) is adapted to close the other outlet valve port. Further, the valve port I3c and the valve port II3d provided on the valve seat 3 are provided so as to substantially oppose the axially symmetric position. Is also good.
【０００８】図６に示す制御部６ｃの形状は、厚肉の円
筒状に形成されており、この制御部６ｃの下面には約１
８０°の範囲に渡って流体通路の面積が漸増する円弧状
溝Ｉ６ｄ（図７の円弧状溝の展開図を参照。）が設けら
れると共に、該円弧状溝Ｉ６ｄの流体通路の面積が最大
となる位置に流入口６ｅが設けられている。なお、図
中、Ａ点は全閉の位置を示し、Ｂ点は全開の位置を示し
ている。また、弁口Ｉ３ｃ 、弁口II３ｄの配置並び
に、弁体６が回転した時には、一方の出口弁口が全閉か
ら全開になる間（約弁体の半回転）は、他方の出口弁口
が閉じるようになっているのは図５の形態と同じであ
る。The control unit 6c shown in FIG. 6 is formed in a thick cylindrical shape, and the lower surface of the control unit 6c has a thickness of about 1 mm.
An arc-shaped groove I6d (see a developed view of the arc-shaped groove in FIG. 7) is provided in which the area of the fluid passage gradually increases over a range of 80 °, and the area of the fluid passage in the arc-shaped groove I6d is maximized. An inflow port 6e is provided at a position. In the figure, point A indicates a fully closed position, and point B indicates a fully opened position. Further, when the valve ports I3c and II3d are arranged and the valve element 6 rotates, while the one outlet valve port is changed from fully closed to fully open (about half a rotation of the valve element), the other outlet valve port is closed. The closing is the same as in the embodiment of FIG.
【０００９】ストッパー７は、断面が逆Ｕ字状のリング
に形成されており、前記の密閉ケース１に圧入固定され
るものであり、該ストッパー７には、下方に伸び、前記
ストッパーの位置決め穴３ｅに嵌着される位置決め片７
ｂが設けられると共に、リングの内側上方には前記の当
接部５ｂと係合する円弧状のストッパー部７ａが設けら
れている。なお、前記のストッパー部７ａの形状は、パ
ルス数の関係で平板でもよい。The stopper 7 is formed in a ring having an inverted U-shaped cross section and is press-fitted and fixed in the closed case 1. The stopper 7 extends downward and has a positioning hole for the stopper. Positioning piece 7 fitted to 3e
With b are provided, arc-shaped stopper portion 7a that engages with the contact portion 5b of the is provided inside above the ring. The shape of the stopper 7a may be a flat plate due to the number of pulses.
【００１０】上記のごとく構成された従来の制御弁で
は、前記弁座シート３面上を、弁体６が１回転未満の範
囲で回転摺動することにより、出口通路９に連通する複
数の弁口Ｉ３ｃ 、弁口II３ｄの開度を絞り制御して流
路の切換並びに流量を制御することができるようになっ
ている。In the conventional control valve configured as described above, a plurality of valves communicated with the outlet passage 9 by rotating the valve element 6 on the surface of the valve seat 3 within a range of less than one rotation. The switching of the flow path and the flow rate can be controlled by restricting the opening of the port I3c and the valve port II3d.
【００１１】図８は、図５と図６の形態に弁体の制御部
を備えた制御弁における流量特性図であり、始めの弁体
の約半回転では、出口弁口Ｉ３ｃは全閉から全開になる
間が絞り制御され、後の半回転では、他方の出口弁口II
３ｄは全閉から全開になる間が絞り制御される状態を示
すものである。FIG. 8 is a flow characteristic diagram of a control valve provided with a valve body control unit in the form of FIGS. 5 and 6. In the first half rotation of the valve body, the outlet valve port I3c is fully closed. The throttle control is performed during the full opening, and in the subsequent half rotation, the other outlet valve port II
3d shows a state where the controlled aperture while fully opened from the fully closed.
【００１２】図９は、従来の他の実施例を示す弁体と弁
座シートの平面図であり、図５に示す制御部６ｃの形状
に対して相違するのは、弁体の約半回転分の位置で左右
が相似形になるようにインボリュート曲線のカム板形状
に形成したものである。[0012] Figure 9 is a plan view of the valve body and the valve seat sheet showing another conventional example, for different relative shape of the control unit 6c shown in FIG. 5, about a half rotation of the valve body It is formed in a cam plate shape of an involute curve so that the left and right are similar at the minute position.
【００１３】図１０は、従来の他の実施例を示す弁体と
弁座シートの平面図であり、図６に示す制御部６ｃの形
状に対して相違するのは、弁体の約半回転分の位置で左
右が相似形になるように制御部６ｃの下面に２つの円弧
状の溝を形成したものである。FIG. 10 is a plan view of a valve body and a valve seat showing another embodiment of the prior art. The difference from the shape of the control section 6c shown in FIG. left and right minute position is obtained by forming two arcuate grooves on the lower surface of the control unit 6c to be similar in shape.
【００１４】図１１は、図９と図１０の形態に弁体の制
御部を備えた制御弁における流量特性図である。この形
態では、一方の出口弁口Ｉ３ｃは、始めの弁体の約半回
転で全閉から全開になり、後の半回転で全閉になるよう
になっている。また、他方の出口弁口II３ｄは、逆に全
開→全閉→全開と制御されるようになっている。FIG. 11 is a flow rate characteristic diagram of a control valve provided with a valve body control unit in the form of FIGS. 9 and 10. In this embodiment, the one outlet valve port I3c is changed from the fully closed state to the fully opened state by the first half rotation of the valve body, and is fully closed by the subsequent half rotation. Also, other outlet valve port II3d is adapted to be controlled fully opened → fully closed → fully open reversed.
【００１５】[0015]
【発明が解決しようとする課題】しかし、弁体の１回転
未満の範囲で多方向に切換えて流量を制御させる制御弁
では、１つの弁座シートで且つ同一半径のサークル上に
複数の弁口を設けるものであるが、その弁口の数は２〜
３個に限定される。また、このように複数個の弁口を用
いると流量の調節範囲すなわち、弁体の回転角度が小さ
くなり、絞り制御の精度を高めることができなかった。However, in a control valve for controlling the flow rate by switching in multiple directions within a range of less than one rotation of a valve body, a plurality of valve ports are formed on a single valve seat and on a circle having the same radius. The number of valve ports is 2 to
Limited to three. Further, when a plurality of valve ports are used, the adjustment range of the flow rate, that is, the rotation angle of the valve body becomes small, and the precision of the throttle control cannot be increased.
【００１６】[0016]
【課題を解決するための手段】本発明は、筒状ケースの
上部と下部にそれぞれ、弁座と弁体とにより構成される
異なった流量特性を得ることが可能な少なくとも１つ以
上の弁口を有する上絞り弁部と下絞り弁部をそれぞれ構
成させ、ロータの上部と下部には、それぞれ決められた
範囲内にてロータと一体的に回動できる上弁体及び下弁
体を入口冷媒の圧力によって夫々の絞り弁部の弁座に当
接可能に設け、１つの流入管より流入した冷媒が、上下
の１つ以上の絞り弁部の制御により、おのおのの弁座に
取り付けられた複数の流出管３８、４０より多方向に冷
媒を流出させることにより、複数の冷却回路を備えた冷
凍システムにおける冷媒流量が確実に制御ができる電動
流量制御弁の提供を目的とするものである。According to the present invention, at least one or more valve ports capable of obtaining different flow characteristics constituted by a valve seat and a valve body are respectively provided at an upper portion and a lower portion of a cylindrical case. The upper throttle valve portion and the lower throttle valve portion each having an upper portion and a lower portion of the rotor are provided at the upper and lower portions of the rotor with an upper valve body and a lower valve body that can rotate integrally with the rotor within a predetermined range. Are provided so as to be able to come into contact with the valve seats of the respective throttle valve portions by the pressure of the refrigerant. It is an object of the present invention to provide an electric flow control valve capable of surely controlling the flow rate of a refrigerant in a refrigeration system having a plurality of cooling circuits by causing the refrigerant to flow in multiple directions from the outflow pipes 38 and 40 of the present invention.
【００１７】すなわち、請求項１記載の電動流量制御弁
は、非磁性体の筒状ケース３１の外周に配置した固定コ
イル３２と内部に配置したロータ３３とにより、前記ロ
ータ３３と一体的に回動する上弁体４３及び下弁体４４
を上弁座３５及び下弁座３６のそれぞれ軸穴５７に支持
されるシャフト３４を取付け、ステッピングモーター等
の駆動手段によって作動させ、該弁体と共に上下の絞り
弁部４５、４８を回動させ、上下の弁座にそれぞれ設け
られた１つ以上の弁口の開度を制御することにより、ヒ
ートポンプ式冷凍サイクルにおける多方向への冷媒通過
量を調整し、冷凍サイクルの能力制御を行う電動流量制
御弁であって、前記の筒状ケース３１の上端部と下端部
にそれぞれ上弁座３５と下弁座３６を設けると共に、該
それぞれの弁座３５、３６には少なくとも１つ以上の弁
口３７、３９につながる流出管３８、４０を設けると共
に、前記弁座の壁面に流入口４１につながる流入管４２
を設け、円筒状のロータ３３の上端部と下端部には、そ
れぞれロータと一体的に回動可能な上弁体４３及び下弁
体４４を嵌合させて設けると共に、該上弁体４３には、
前記弁口３７の開度を制御させる上絞り弁部４５、ロー
タの内部に連通する連通孔４６並びにロータの内面に嵌
合する突出部４７を、また下弁体４４には、前記弁口３
９の開度を制御させる下絞り弁部４８、ロータの内部に
連通する連通孔４９並びにロータの内面に嵌合する突出
部５０を設け、１つの流入管４２より流入した冷媒が、
上下の絞り弁部４５、４８の制御により、おのおのの弁
座に取り付けられた１つ以上の流出管３８、４０より流
出するようにしたことを特徴とする電動流量制御弁であ
る。[0017] That is, the electric flow control valve according to claim 1 is by the fixed coil 32 and the rotor 33 disposed therein which is disposed on the outer periphery of the cylindrical case 31 of the non-magnetic material, integrally rotating with the rotor 33 Moving upper valve body 43 and lower valve body 44
The shaft 34 supported on the shaft hole 57 of each of the upper valve seat 35 and the lower valve seat 36 is attached, and is operated by driving means such as a stepping motor to rotate the upper and lower throttle valve portions 45 and 48 together with the valve body. , by controlling the opening of one or more valve ports respectively provided above and below the valve seat, to adjust the refrigerant passage of the multi-directional in a heat pump type refrigeration cycle, an electric flow to perform the capacity control of the refrigerating cycle A control valve, wherein an upper valve seat 35 and a lower valve seat 36 are provided at an upper end and a lower end of the cylindrical case 31, respectively, and each of the valve seats 35, 36 has at least one or more valve ports. Outflow pipes 38 and 40 leading to 37 and 39 are provided, and an inflow pipe 42 leading to an inlet 41 on the wall surface of the valve seat.
The upper valve body 43 and the lower valve body 44 that can rotate integrally with the rotor are provided at the upper end and the lower end of the cylindrical rotor 33, respectively. Is
An upper throttle valve portion 45 for controlling the opening degree of the valve port 37, a communication hole 46 communicating with the inside of the rotor, and a protruding portion 47 fitted to the inner surface of the rotor, and the lower valve body 44 includes the valve port 3
9 is provided with a lower throttle valve portion 48 for controlling the opening degree, a communication hole 49 communicating with the inside of the rotor, and a protruding portion 50 fitted on the inner surface of the rotor.
The control of the upper and lower throttle valve section 45, 48 is an electric flow control valve, characterized in that it has to flow out from the one or more outlet tubes 38 and 40 attached to each of the valve seat.
【００１８】また、請求項２記載の電動流量制御弁は、
前記の上弁体４３並びにに下弁体４４に形成される絞り
制御用の溝５２、５３は、それぞれ溝の形状が異なり、
一方の流出管３８と他方の流出管４０とでは流量特性が
異なるようにしたことを特徴とする請求項１に記載の電
動流量制御弁。The motor-operated flow control valve according to claim 2 is
The grooves 52 and 53 for controlling the throttle formed in the upper valve body 43 and the lower valve body 44 have different groove shapes, respectively.
The motor-operated flow control valve according to claim 1, wherein the flow characteristics of the one outflow pipe 38 and the other outflow pipe 40 are different.
【００１９】また、請求項３記載の電動流量制御弁は、
前記の上弁体４３及び下弁体４４の外周面にピストンリ
ング５４を設け、前記筒状ケース３１の内周面と上弁体
４３、下弁体４４及び前記ロータ３３の外周面との隙間
に冷媒が流れることを防止したことを特徴とする請求項
１及び請求項２に記載のものである。The motor-operated flow control valve according to claim 3 is
A piston ring 54 is provided on the outer peripheral surface of the upper valve body 43 and the lower valve body 44, and a gap is formed between the inner peripheral surface of the cylindrical case 31 and the outer peripheral surfaces of the upper valve body 43, the lower valve body 44, and the rotor 33. those described in claim 1 and claim 2, characterized in that to prevent the flow of refrigerant.
【００２０】また、請求項４記載の電動流量制御弁は、
前記の上弁座３５または下弁座３６のいずれかにストッ
パ５５を設けると共に、該ストッパに対応する上弁体４
３もしくは下弁体４４に係止片５６を設けたことを特徴
とする請求項１、請求項２及び請求項３に記載のもので
ある。Further, the electric flow control valve according to claim 4 is
Upper valve body 4 and the stopper 55 is provided on one of the upper valve seat 35 or a lower valve seat 36, corresponding to the stopper
The third or lower valve body 44 is provided with a locking piece 56, according to the first, second and third aspects.
【００２１】また、請求項５記載の電動流量制御弁は、
前記の上弁体４３と下弁体４４の間には、それぞれの弁
体の絞り弁部が上弁座３５もしくは下弁座３６に当接す
るように圧縮コイルばね５１を設けたことを特徴とする
請求項１、請求項２、請求項３及び請求項４に記載のも
のである。Further, the electric flow control valve according to claim 5 is
Between the upper valve body 43 and the lower valve body 44 of the can and wherein the throttle valve of each valve body is provided with a compression coil spring 51 so as to abut against the upper valve seat 35 or the lower valve seat 36 Claims 1, 2, 3, and 4 described above.
【００２２】[0022]
【発明の実施の形態】以下、本発明の一実施例を図面に
基づき詳細に説明する。図１は本発明の電動膨張弁の縦
断面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. Figure 1 is a longitudinal sectional view of the electric expansion valve of the present invention.
【００２３】本発明の電動流量制御弁は、非磁性金属に
よる両端面を開口させた筒状ケース３１と該筒状ケース
３１の両端部に気密的に固定される上弁座３５及び下弁
座３６と円筒状のロータ３３と該ロータと係合して回動
する上弁体４３及び下弁体４４とシャフト３４と固定コ
イル３２により構成される。The motor-operated flow control valve of the present invention comprises a cylindrical case 31 having both ends opened by a non-magnetic metal, and an upper valve seat 35 and a lower valve seat hermetically fixed to both ends of the cylindrical case 31. 36, a cylindrical rotor 33, an upper valve body 43 and a lower valve body 44 which rotate by engaging with the rotor, a shaft 34, and a fixed coil 32.
【００２４】上弁座３５及び下弁座３６は円板状であ
り、その中心部にはそれぞれ軸穴５７が設けられるとと
もに、中心から少し離れた位置にそれぞれ弁口３７、３
９が設けられている。また、弁座の弁口３７及び３９に
は流入出管３８及び４０が気密的に固定されている。The upper valve seat 35 and the lower valve seat 36 are disk-shaped, each having a shaft hole 57 at the center thereof, and having valve openings 37, 3 at positions slightly away from the center.
9 are provided. Further, inlet and delivering pipes 38 and 40 are air-tightly fixed to the valve port 37 and 39 of the valve seat.
【００２５】また、上弁座３５及び下弁座３６は、前記
筒状ケース３１の両端部に気密的に固定されており、前
記の上弁座３５にはストッパ５５が垂下状に固定されて
いるが、このストッパ５５は、上弁座３５に変えて下弁
座３６側に設けてよいのは言うまでもない。Further, the upper valve seat 35 and the lower valve seat 36, the cylindrical casing 31 are hermetically fixed to both ends of the the upper valve seat 35 of the stopper 55 is fixed to the hanging shape However, it goes without saying that the stopper 55 may be provided on the lower valve seat 36 side instead of the upper valve seat 35.
【００２６】また、前記の上弁体４３及び下弁体４４の
外周面にはピストンリング５４が設けられており、該ピ
ストンリング５４によって、前記筒状ケース３１の内周
面と上弁体４３、下弁体４４及び前記ロータ３３の外周
面との隙間に冷媒が流れることを防止できるようになっ
ている。A piston ring 54 is provided on the outer peripheral surface of the upper valve body 43 and the lower valve body 44. The piston ring 54 allows the inner peripheral surface of the cylindrical case 31 to be in contact with the upper valve body 43. Thus, the refrigerant can be prevented from flowing into the gap between the lower valve body 44 and the outer peripheral surface of the rotor 33.
【００２７】つまり、図１に示すごとく、一方の冷媒が
流入管４２→下弁体の溝５３→下弁座の弁口３９→流出
管４０へ、他方の冷媒が流入管４２→下弁体４４の連通
孔４９→ロータ３３の内部→上弁体４３の連通孔４６→
上弁体の溝５２→上弁座の弁口３７→流出管３８へと流
れる際、冷媒がローター３３の外部を流れないようにす
ることができ、冷媒中に磁性のある異物等が含まれてい
ても、ローター外周部に異物が堆積して回転を阻害する
ことがなく、信頼性の高い電動流量制御弁を提供するこ
とができる。That is, as shown in FIG. 1, one refrigerant flows into the inflow pipe 42 → the groove 53 of the lower valve body → the valve port 39 of the lower valve seat → the outflow pipe 40, and the other refrigerant flows into the inflow pipe 42 → the lower valve body. 44 communication hole 49 → inside the rotor 33 → communication hole 46 of the upper valve body 43 →
When flowing from the upper valve body groove 52 → the upper valve seat valve port 37 → the outflow pipe 38, the refrigerant can be prevented from flowing outside the rotor 33, and the refrigerant contains magnetic foreign matter and the like. even if, not inhibit rotation deposited foreign objects outside of the rotor, it is possible to provide a highly reliable electric flow control valve.
【００２８】円筒状のロータ３３は、その上端部と下端
部には切り欠き部（符号なし）が設けられており、この
切り欠き部は、後述する上弁体４３及び下弁体４４の突
出部４７、５０と係合するようになっている。The cylindrical rotor 33 has its upper and lower ends to the notches are (unsigned) is provided, the cutout portion, protruding above valve body 43 and the lower valve body 44 to be described later parts 47 and 50 and are adapted to engage.
【００２９】上弁体４３及び下弁体４４は円柱形状であ
り、その中心部には軸孔（符号なし）が設けられ、各々
の弁体４３，４４はシャフト３４に遊嵌されている。ま
た、上弁体４３及び下弁体４４のロータ３３側は、該ロ
ータの内径部に嵌合できるように突出部４７、５０が設
けられている。The upper valve body 43 and the lower valve body 44 has a cylindrical shape, that is in the center axial hole (not numbered) are provided, each of the valve body 43 is loosely fitted to the shaft 34. Protrusions 47 and 50 are provided on the rotor 33 side of the upper valve body 43 and the lower valve body 44 so as to be fitted to the inner diameter of the rotor.
【００３０】また、上弁体４３には、前述した上弁座の
ストッパ５５に対応させて係止片５６が設けられてお
り、この係止片５６がストッパ５５に当接することによ
り、ロータ３３と上弁体及び下弁体が回転する際の回転
端位置を規制するようになっている。Further, the upper valve body 43, and locking piece 56 is provided so as to correspond to the stopper 55 of the upper valve seat as described above, by the locking piece 56 abuts against the stopper 55, the rotor 33 The upper valve body and the lower valve body regulate the rotation end position when rotating.
【００３１】シャフト３４は、ロータ３３と上弁体４３
及び下弁体４４の回転軸であり、シャフト３４の両端部
がそれぞれ上弁座３５及び下弁座３６の軸穴５７に軸支
されるとともに、上弁体及び下弁体の軸孔（符号なし）
を遊嵌状に貫通するようになっている。The shaft 34 includes a rotor 33 and an upper valve body 43.
And both ends of the shaft 34 are axially supported by the shaft holes 57 of the upper valve seat 35 and the lower valve seat 36, respectively. None)
It is adapted to penetrate the loosely fitted to.
【００３２】図２は、本発明の実施例を示す弁体と弁座
の平面図であり、（ａ）は上絞り弁部を表し、（ｂ）は
下絞り弁部を表わしている。この図２に示す絞り弁部の
形態は一例を示すものであり、例えば従来例として示し
た図５、図６、図９及び図１０に示す形態のいずれであ
ってもよい。FIGS. 2A and 2B are plan views of a valve body and a valve seat showing an embodiment of the present invention. FIG. 2A shows an upper throttle valve portion, and FIG. 2B shows a lower throttle valve portion. The form of the throttle valve portion shown in FIG. 2 is an example, and may be any of the forms shown in FIGS. 5, 6, 9 and 10 shown as conventional examples.
【００３３】図３は、図２の形態における制御弁の流量
特性図である。本発明の制御弁においては、弁体の１回
転未満回転の全域に渡って２つの弁口を制御できるが、
従来例の図８に示す形態のものは弁体の１回転未満回転
の半分の領域でしか２つの弁口を制御できず、また従来
例の図１１に示す形態のものは弁体の１回転未満回転の
全領域で２つの弁口を制御できるというものの、流量特
性が対称的なものしかできない。FIG. 3 is a flow characteristic diagram of the control valve in the embodiment of FIG. In the control valve of the present invention, two valve ports can be controlled over the entire region of the valve body rotating less than one rotation.
Those of the embodiment shown in Figure 8 of the prior art can not control the two valve ports only half the area of rotation less than one revolution of the valve body, also one rotation of the valve body is in the form shown in FIG. 11 in the conventional example Although the two valve ports can be controlled in the entire region of less than rotation, only the flow characteristics can be symmetric.
【００３４】[0034]
【発明の効果】上述のごとく構成された本発明の電動流
量制御弁は、上下方向に設けられた２つの弁座面を２つ
の弁体が回転摺動することにより、従来品における弁口
数（２〜３個）の約２倍の数（４〜６個）を設けること
ができる。また弁口の数を同じにした場合は、弁体の回
転領域（制御領域）を倍に広げることができるため、各
々の弁口における流量制御の精度を高めることができ
る。According to the electric flow control valve of the present invention constructed as described above, the number of valve ports in the conventional product is increased by the two valve bodies rotating and sliding on the two valve seat surfaces provided in the vertical direction. About 2 times (2 to 3 pieces) (4 to 6 pieces) can be provided. In the case where the number of valve ports in the same, it is possible to widen the valve body of the rotary region (control region) is doubled, it is possible to improve the accuracy of flow rate control in each of the valve port.
【図１】 本発明の実施例を示す制御弁の縦断面図。FIG. 1 is a longitudinal sectional view of a control valve showing an embodiment of the present invention.
【図２】 本発明の実施例を示す弁座の平面図。Plan view of the valve seat illustrating an embodiment of the present invention; FIG.
【図３】 図２の形態における制御弁の流量特性図。FIG. 3 is a flow rate characteristic diagram of a control valve in the embodiment of FIG. 2;
【図４】 従来の実施例を示す制御弁の縦断面図。FIG. 4 is a longitudinal sectional view of a control valve showing a conventional example.
【図５】 従来の弁体と弁座シートの平面図。FIG. 5 is a plan view of a conventional valve body and the valve seat sheet.
【図６】 従来の他の実施例を示す弁体と弁座シートの
平面図。FIG. 6 is a plan view of the valve body and the valve seat sheet showing another conventional example.
【図７】 図６に示す弁体の円弧状溝の展開図。FIG. 7 is a development view of an arc-shaped groove of the valve body shown in FIG. 6;
【図８】 図５と図６の形態に弁体の制御部を備えた制
御弁における流量特性図。FIG. 8 is a flow rate characteristic diagram of a control valve provided with a valve body control unit in the forms of FIGS. 5 and 6;
【図９】 従来の他の実施例を示す弁体と弁座シートの
平面図。FIG. 9 is a plan view of a valve body and a valve seat showing another conventional example.
【図１０】従来の他の実施例を示す弁体と弁座シートの
平面図。Figure 10 is a plan view of the valve body and the valve seat sheet showing another conventional example.
【図１１】図９と図１０の形態に弁体の制御部を備えた
制御弁における流量特性図。FIG. 11 is a flow characteristic diagram of a control valve provided with a valve body control unit in the embodiments of FIGS. 9 and 10;
３１ 筒状ケース、 ３２ 固定コイ
ル、３３ ロータ、 ３４ シャフ
ト、３５ 上弁座、 ３６ 下弁
座、３７ 弁口、 ３８ 流出
管、３９ 弁口、 ４０ 流出
管、４１ 流入口、 ４２ 流出
管、４３ 上弁体、 ４４ 下弁体
４５ 上絞り弁部、 ４６ 連通孔、４
７ 突出部、 ４８ 下絞り弁部、
４９ 連通孔、 ５０ 突出部５１
圧縮コイルばね、 ５２、５３ 絞り制御
用の溝、５４ ピストンリング、 ５５ ス
トッパ、５６ 係止片。31 cylindrical case, 32 fixed coil, 33 rotor, 34 shaft, 35 upper valve seat, 36 lower valve seat, 37 valve port, 38 outflow pipe, 39 valve port, 40 outflow pipe, 41 inflow port, 42 outflow pipe, 43 Upper valve body, 44 Lower valve body 45 Upper throttle valve part, 46 Communication hole, 4
7 projecting part, 48 lower throttle valve part,
49 communication hole, 50 projection 51
Compression coil spring, a groove for 52 and 53 aperture control, 54 piston ring, 55 a stopper, 56 locking piece.
Claims (5)
た固定コイル３２と内部に配置したロータ３３とによ
り、前記ロータ３３と一体的に回動する上弁体４３及び
下弁体４４を上弁座３５及び下弁座３６のそれぞれ軸穴
５７に支持されるシャフト３４を取付け、ステッピング
モーター等の駆動手段によって作動させ、該弁体と共に
上下の絞り弁部４５、４８を回動させ、上下の弁座にそ
れぞれ設けられた１つ以上の弁口の開度を制御すること
により、ヒートポンプ式冷凍サイクルにおける多方向へ
の冷媒通過量を調整し、冷凍サイクルの能力制御を行う
電動流量制御弁であって、 前記の筒状ケース３１の上端部と下端部にそれぞれ上弁
座３５と下弁座３６を設けると共に、該それぞれの弁座
３５、３６には少なくとも１つ以上の弁口３７、３９に
つながる流出管３８、４０を設けると共に、前記弁座の
壁面に流入口４１につながる流入管４２を設け、 円筒状のロータ３３の上端部と下端部には、それぞれロ
ータと一体的に回動可能な上弁体４３及び下弁体４４を
嵌合させて設けると共に、該上弁体４３には、前記弁口
３７の開度を制御させる上絞り弁部４５、ロータの内部
に連通する連通孔４６並びにロータの内面に嵌合する突
出部４７を、また下弁体４４には、前記弁口３９の開度
を制御させる下絞り弁部４８、ロータの内部に連通する
連通孔４９並びにロータの内面に嵌合する突出部５０を
設け、 １つの流入管４２より流入した冷媒が、上下の絞り弁部
４５、４８の制御により、おのおのの弁座に取り付けら
れた１つ以上の流出管３８、４０より流出するようにし
たことを特徴とする電動流量制御弁。1. A by the fixed coil 32 and the rotor 33 disposed therein which is disposed on the outer periphery of the cylindrical case 31 of the non-magnetic material, the rotor 33 and the upper valve body 43 and the lower valve body 44 rotates integrally The shaft 34 supported on the shaft hole 57 of each of the upper valve seat 35 and the lower valve seat 36 is attached, and is operated by driving means such as a stepping motor to rotate the upper and lower throttle valve portions 45 and 48 together with the valve body. An electric flow rate that controls the amount of refrigerant passing in multiple directions in a heat pump type refrigeration cycle and controls the capacity of the refrigeration cycle by controlling the opening degree of one or more valve ports respectively provided in the upper and lower valve seats. A control valve, wherein an upper valve seat 35 and a lower valve seat 36 are provided at an upper end and a lower end of the cylindrical case 31, respectively, and each of the valve seats 35 and 36 has at least one or more valve ports. 37, Outlet pipes 38 and 40 leading to the inlet 39 are provided, and an inlet pipe 42 leading to the inlet 41 is provided on the wall surface of the valve seat. The upper end and the lower end of the cylindrical rotor 33 are integrally rotated with the rotor, respectively. The movable upper valve body 43 and the lower valve body 44 are fitted and provided, and the upper valve body 43 communicates with the upper throttle valve portion 45 for controlling the opening degree of the valve port 37 and the inside of the rotor. the communication hole 46 and the protruding portion 47 is fitted to the inner surface of the rotor, also under valve body 44, the lower throttle valve 48 for controlling the opening of the valve port 39, and the communicating hole 49 communicating with the interior of the rotor A protrusion 50 fitted to the inner surface of the rotor is provided, and the refrigerant flowing from one inflow pipe 42 is controlled by upper and lower throttle valve parts 45 and 48 to at least one outflow pipe attached to each valve seat. 38 and 40 Electric flow control valve for the butterflies.
される絞り制御用の溝５２、５３は、それぞれ溝の形状
が異なり、一方の流出管３８と他方の流出管４０とでは
流量特性が異なるようにしたことを特徴とする請求項１
に記載の電動流量制御弁。2. A groove 52, 53 of the throttle control which is formed in the upper valve body 43 and the lower valve body 44 of the has different shape of the groove, respectively, in the one outlet pipe 38 and the other outlet pipe 40 2. The method according to claim 1, wherein the flow characteristics are different.
3. The electric flow control valve according to claim 1.
にピストンリング５４を設け、前記筒状ケース３１の内
周面と上弁体４３、下弁体４４及び前記ロータ３３の外
周面との隙間に冷媒が流れることを防止したことを特徴
とする請求項１及び請求項２に記載の電動流量制御弁。3. A piston ring 54 is provided on the outer peripheral surface of the upper valve body 43 and the lower valve body 44, and the inner peripheral surface of the cylindrical case 31 and the upper valve body 43, the lower valve body 44, and the rotor 33 are provided. 3. The electric flow control valve according to claim 1, wherein the refrigerant is prevented from flowing into a gap with the outer peripheral surface.
れかにストッパ５５を設けると共に、該ストッパに対応
する上弁体４３もしくは下弁体４４に係止片５６を設け
たことを特徴とする請求項１、請求項２及び請求項３に
記載の電動流量制御弁。With wherein providing the stopper 55 in either of the above valve seat 35 or a lower valve seat 36, in that a locking piece 56 in the upper valve body 43 or the lower valve body 44 corresponding to the stopper electric flow control valve according to claim 1, claim 2 and claim 3, characterized.
それぞれの弁体の絞り弁部が上弁座３５もしくは下弁座
３６に当接するように圧縮コイルばね５１を設けたこと
を特徴とする請求項１、請求項２、請求項３及び請求項
４に記載の電動流量制御弁。5. Between the upper valve body 43 and the lower valve body 44,
A compression coil spring 51 is provided so that a throttle valve portion of each valve body abuts on the upper valve seat 35 or the lower valve seat 36. 3. The electric flow control valve according to claim 1.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001057867A JP2002257249A (en) | 2001-03-02 | 2001-03-02 | Electric-operated flow control valve |
| CN 02106475 CN1374470A (en) | 2001-03-02 | 2002-03-01 | Electric flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001057867A JP2002257249A (en) | 2001-03-02 | 2001-03-02 | Electric-operated flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002257249A true JP2002257249A (en) | 2002-09-11 |
Family
ID=18917679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001057867A Pending JP2002257249A (en) | 2001-03-02 | 2001-03-02 | Electric-operated flow control valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2002257249A (en) |
| CN (1) | CN1374470A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002295694A (en) * | 2001-03-29 | 2002-10-09 | Fuji Koki Corp | Motor-operated valve |
| JP2005240909A (en) * | 2004-02-26 | 2005-09-08 | Fuji Koki Corp | Rotary motor-driven valve using planetary gear mechanism |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443789C (en) * | 2005-07-29 | 2008-12-17 | 浙江三花制冷集团有限公司 | Electro switching valve |
| CN101762121B (en) * | 2008-11-13 | 2014-03-19 | 浙江三花股份有限公司 | Electric flow distributor |
| CN103075540A (en) * | 2013-01-04 | 2013-05-01 | 宁波爱姆优东海精工电器有限公司 | Cool air output flow-rate adjusting structure of electric switching valve |
-
2001
- 2001-03-02 JP JP2001057867A patent/JP2002257249A/en active Pending
-
2002
- 2002-03-01 CN CN 02106475 patent/CN1374470A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002295694A (en) * | 2001-03-29 | 2002-10-09 | Fuji Koki Corp | Motor-operated valve |
| JP2005240909A (en) * | 2004-02-26 | 2005-09-08 | Fuji Koki Corp | Rotary motor-driven valve using planetary gear mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1374470A (en) | 2002-10-16 |
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