JP2005331153A - Throttle valve device and air conditioner - Google Patents

Throttle valve device and air conditioner Download PDF

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Publication number
JP2005331153A
JP2005331153A JP2004149242A JP2004149242A JP2005331153A JP 2005331153 A JP2005331153 A JP 2005331153A JP 2004149242 A JP2004149242 A JP 2004149242A JP 2004149242 A JP2004149242 A JP 2004149242A JP 2005331153 A JP2005331153 A JP 2005331153A
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valve
throttle
inlet
outlet port
passage
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Mitsuo Sugita
三男 杉田
Osamu Sugano
治 菅野
Takayuki Iriko
隆之 入子
Hisayuki Ashizawa
久幸 芦澤
Yoshio Maruyama
美穂 丸山
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Saginomiya Seisakusho Inc
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Saginomiya Seisakusho Inc
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Priority to JP2004149242A priority Critical patent/JP2005331153A/en
Priority to CN2005100727712A priority patent/CN100406791C/en
Publication of JP2005331153A publication Critical patent/JP2005331153A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To effectively reduce noise, by reducing vibration itself generated in a throttle part in a throttle valve device. <P>SOLUTION: A shock absorbing member 26 and a throttle member 28 are arranged in series when viewing a fluid flow flowing in a passage, in the passage for communicating and connecting a first inlet-outlet port 12 with a second inlet-outlet port 13 in a state of closing a valve element 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、絞り弁装置および空気調和機に関し、特に、除湿モードを有する空気調和機で除湿用絞り弁として使用される絞り弁装置および空気調和機に関するものである。   The present invention relates to a throttle valve device and an air conditioner, and more particularly to a throttle valve device and an air conditioner used as a dehumidifying throttle valve in an air conditioner having a dehumidifying mode.

除湿運転を行える空気調和機として、室内熱交換器が２分割され、その２個の室内熱交換器間に、弁閉状態で絞り弁となる絞り弁装置（除湿用絞り弁、サイクルドライ弁）が設けられ、除湿運転時には、弁閉して絞り弁として作用する絞り弁装置の絞り通路を冷媒が流れることにより、２分割された室内熱交換器のうちの上流側の室内熱交換器を凝縮器、下流側の室内熱交換器を蒸発器とし、室内空気に対して下流側の室内熱交換器によって冷却・除湿を行い、上流側の室内熱交換器によって加熱を行い、空気温度を下げずに除湿を行うことができる除湿モード付きの空気調和機が知られている（例えば、特許文献１）。   As an air conditioner capable of dehumidifying operation, an indoor heat exchanger is divided into two, and a throttle valve device (dehumidifying throttle valve, cycle dry valve) that functions as a throttle valve when the valve is closed between the two indoor heat exchangers When the dehumidifying operation is performed, the refrigerant flows through the throttle passage of the throttle valve device that functions as a throttle valve by closing the valve, thereby condensing the indoor heat exchanger on the upstream side of the indoor heat exchanger divided into two The downstream indoor heat exchanger is an evaporator, and the indoor air is cooled and dehumidified by the downstream indoor heat exchanger, heated by the upstream indoor heat exchanger, and the air temperature is not lowered. An air conditioner with a dehumidifying mode capable of performing dehumidification is known (for example, Patent Document 1).

上述のような空気調和機では、除湿運転時に、サイクルドライ用の絞り弁装置が弁閉状態になり、絞り効果を得るために、絞り弁装置内の狭い絞り通路を冷媒が流れるため、冷媒流に乱れが生じる。   In the air conditioner as described above, during the dehumidifying operation, the throttle valve device for cycle drying is closed, and the refrigerant flows through a narrow throttle passage in the throttle valve device in order to obtain a throttling effect. Disturbance occurs.

このため、絞り弁装置が設置される室内機において、乱流に起因する振動が冷媒液中を伝播し、室内機の凝縮器、蒸発器が共鳴板として作用し、耳障りな冷媒流動音（冷媒擦過音）が発生する。つまり、サイクルドライ除湿運転時には、絞り部を液とガスの混合冷媒が通過し、間欠的な冷媒通過音が生じる。このことによって絞り部より上流側の室内機の熱交換器で共鳴が生じ、これが室内において耳障りな騒音になる。   For this reason, in an indoor unit in which a throttle valve device is installed, vibrations caused by turbulent flow propagate through the refrigerant liquid, and the condenser and evaporator of the indoor unit act as a resonance plate, which makes the refrigerant flow noise (refrigerant) (Abrasion noise) occurs. That is, during the cycle dry dehumidifying operation, the mixed refrigerant of liquid and gas passes through the throttle, and intermittent refrigerant passing sound is generated. As a result, resonance occurs in the heat exchanger of the indoor unit upstream from the throttle portion, which becomes annoying noise in the room.

このようなことは、圧縮機回転数の増加により冷媒循環流量が増加し、絞り弁装置内の絞り通路前後の圧力差が大きいほど顕著になり、不快騒音レベルが上昇する。   This increases as the compressor rotation speed increases and the refrigerant circulation flow rate increases. The greater the pressure difference before and after the throttle passage in the throttle valve device, the greater the unpleasant noise level.

このことに鑑みて、絞り弁装置の絞り通路に、焼結金属等による多孔質部材を設けたり、多孔質部材によって絞り通路を構成したり、絞り通路の前後に多孔質部材を設けたりし、冷媒が多孔質部材を流れることにより、乱流の通過を抑え、整流化作用を得て冷媒流動音の低減を図ることが、既に提案されている（例えば、特許文献２、３、４、５）。   In view of this, a porous member made of sintered metal or the like is provided in the throttle passage of the throttle valve device, a throttle passage is configured by the porous member, or a porous member is provided before and after the throttle passage, It has already been proposed that the refrigerant flow through the porous member to suppress the passage of turbulent flow and obtain a rectifying action to reduce the refrigerant flow noise (for example, Patent Documents 2, 3, 4, 5). ).

また、図４に示されているように、弁体５０に絞り部材５１を組み込み、絞り部材５１の前後に冷媒流動音の伝播を防止する多孔質部材等によるフィルタ要素５２、５３を配置し、さらに、セレーション部材（ローレット部材）５４を配置し、セレーション部材５４の外周部の複数流路を冷媒が流れることによって絞り部材５１より下流側における冷媒流の整流化を図り、さらに、ばね付勢の可動カラー部材５５を設け、弁体５０が弁室内において冷媒流によって振動することに対して振動減衰作用を得るようにしたものが提案されている。   Further, as shown in FIG. 4, a throttle member 51 is incorporated in the valve body 50, and filter elements 52, 53 made of a porous member or the like for preventing propagation of refrigerant flow noise are arranged before and after the throttle member 51, Further, a serration member (knurl member) 54 is arranged, and the refrigerant flows in a plurality of flow paths on the outer peripheral portion of the serration member 54 so as to rectify the refrigerant flow downstream from the throttle member 51. A movable collar member 55 is provided to obtain a vibration damping action against the vibration of the valve body 50 caused by the refrigerant flow in the valve chamber.

また、空気調和機に用いる除湿用減圧手段としては、複数段のオリフィスを用いたものがある（例えば、特許文献６）。   Moreover, as a dehumidification decompression means used in an air conditioner, there is one using a plurality of stages of orifices (for example, Patent Document 6).

ところで、サイクルドライ除湿運転時に、絞り部で間欠的な冷媒通過音が発生するのは、絞り部の上流側の流体が液とガスとが混合したスラグ流と呼ばれる状態の時であり、液冷媒とガス冷媒の流動抵抗の違いにより、ガスが絞り部に入る瞬間と、液が絞り部に入る瞬間とで、冷媒通路内の圧力が急激に変化する。このため、振動的な圧力変動が生じ、配管等が加振され、その結果、騒音が生じる。このことに対して、従来のものでは、絞り弁装置内の絞り部で生じる振動自体を低減する抜本的な対策がなされておらず、騒音低減に限界がある。
特開平１１−５１５１４号公報 特開２０００−３４６４９５号公報 特開２００１−３１１５７３号公報 特開２００２−３１０５４０号公報 特開２００２−３２３２７３号公報 特開２００３−６５６３２号公報 By the way, during the cycle dry dehumidifying operation, intermittent refrigerant passing sound is generated in the throttle part when the fluid upstream of the throttle part is in a state called slag flow in which liquid and gas are mixed. Due to the difference in flow resistance between the gas refrigerant and the gas refrigerant, the pressure in the refrigerant passage changes abruptly between the moment when the gas enters the throttle portion and the moment when the liquid enters the throttle portion. For this reason, an oscillating pressure fluctuation occurs, and the piping is vibrated, resulting in noise. On the other hand, in the conventional one, no drastic measures to reduce the vibration itself generated at the throttle portion in the throttle valve device are taken, and there is a limit to noise reduction.
Japanese Patent Laid-Open No. 11-51514 JP 2000-346495 A JP 2001-311573 A JP 2002-310540 A JP 2002-323273 A JP 2003-65632 A

この発明が解決しようとする課題は、絞り弁装置内の絞り部で生じる振動自体を低減し、効果的に騒音低減を図ることである。   The problem to be solved by the present invention is to reduce the vibration itself generated in the throttle portion in the throttle valve device and effectively reduce the noise.

この発明による絞り弁装置は、第１の入出口ポート、第２の入出口ポート、前記第１の入出口ポートと常時連通している弁室、前記弁室と前記第２の入出口ポートとの間に設けられた弁ポートを画定する弁ハウジングと、前記弁室内に設けられて前記弁ポートを開閉する弁体とを有する絞り弁装置において、前記弁体に弁閉状態において前記第１の入出口ポートと前記第２の入出口ポートとを連通接続する通路が形成され、前記通路に、緩衝部材と絞り部材とが、当該通路を流れる流体流で見て直列に配置されている。   The throttle valve device according to the present invention includes a first inlet / outlet port, a second inlet / outlet port, a valve chamber always in communication with the first inlet / outlet port, the valve chamber and the second inlet / outlet port. A throttle valve device having a valve housing that defines a valve port provided between the valve body and a valve body that is provided in the valve chamber and opens and closes the valve port. A passage that communicates and connects the inlet / outlet port and the second inlet / outlet port is formed, and the buffer member and the throttle member are arranged in series in the passage as seen in the fluid flow flowing through the passage.

この発明による絞り弁装置は、好ましくは、さらに、前記通路を流れる流体流で見て前記緩衝部材と前記絞り部材の各々の前後に多孔質体によるフィルタ要素が配置されている。   In the throttle valve device according to the present invention, preferably, a filter element made of a porous body is disposed before and after each of the buffer member and the throttle member as viewed in the fluid flow flowing through the passage.

この発明による空気調和機は、圧縮機と、室外熱交換器と、第１の室内熱交換器と、第２の室内熱交換器と、これらをループ接続する冷媒通路と、前記室外熱交換器と前記第１の室内熱交換器との間の冷媒通路に設けられた膨張弁とを有し、前記第１の室内熱交換器と前記第２の室内熱交換器との間に上述のいずれかの発明による絞り弁装置が接続されているものである。   An air conditioner according to the present invention includes a compressor, an outdoor heat exchanger, a first indoor heat exchanger, a second indoor heat exchanger, a refrigerant passage connecting them in a loop, and the outdoor heat exchanger. And an expansion valve provided in a refrigerant passage between the first indoor heat exchanger and any of the above-mentioned between the first indoor heat exchanger and the second indoor heat exchanger. The throttle valve device according to the invention is connected.

この発明による絞り弁装置は、緩衝部材と絞り部材とが、通路を流れる流体流で見て直列に配置されているから、緩衝部材が絞り部材より上流側に位置する流体流において、絞り部材の手前で緩衝部材によって、流体の圧力変動、特に、相変化が緩やかになる。このことにより、絞り部材での振動的な圧力変動の振幅が小さくなり、絞り動作時の騒音発生が低減する。   In the throttle valve device according to the present invention, since the buffer member and the throttle member are arranged in series as viewed in the fluid flow flowing through the passage, in the fluid flow in which the buffer member is located upstream from the throttle member, The buffer member in front causes the pressure fluctuation of the fluid, particularly the phase change, to be moderate. As a result, the amplitude of the vibrational pressure fluctuation in the throttle member is reduced, and noise generation during the throttle operation is reduced.

さらに、通路を流れる流体流で見て緩衝部材と絞り部材の各々の前後に多孔質体によるフィルタ要素が配置されていることにより、冷媒流動音の伝播が防止される。   Furthermore, propagation of the refrigerant flow noise is prevented by arranging the filter element made of a porous body before and after each of the buffer member and the throttle member as viewed in the fluid flow flowing through the passage.

また、この発明による空気調和機では、絞り弁装置での絞り動作時に生じる振動的な圧力変動の振幅が小さくなり、絞り動作時の騒音発生が低減し、さらには、冷媒流動音の伝播が防止され、室内熱交換器での共鳴による騒音の発生が効果的に低減する。   Further, in the air conditioner according to the present invention, the amplitude of the vibrational pressure fluctuation generated during the throttle operation in the throttle valve device is reduced, noise generation during the throttle operation is reduced, and further, the propagation of the refrigerant flow noise is prevented. Thus, the generation of noise due to resonance in the indoor heat exchanger is effectively reduced.

以下に添付の図を参照してこの発明の実施の形態を詳細に説明する。   Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

図１に示されているように、絞り弁装置１０は弁ハウジング１１を有している。弁ハウジング１１は、第１の入出口ポート１２と、第２の入出口ポート１３と、第１の入出口ポート１２と常時直接連通している弁室１４と、弁室１４と第２の入出口ポート１３との間に設けられた弁ポート１５とを画定している。弁ポート１５の弁室１４の側の開口端周りには弁座部１６が画定されている。第１の入出口ポート１２と、第２の入出口ポート１３には、各々継手管１７、１８が接続されている。   As shown in FIG. 1, the throttle valve device 10 has a valve housing 11. The valve housing 11 includes a first inlet / outlet port 12, a second inlet / outlet port 13, a valve chamber 14 always in direct communication with the first inlet / outlet port 12, a valve chamber 14 and a second inlet / outlet. A valve port 15 provided between the outlet port 13 and the outlet port 13 is defined. A valve seat 16 is defined around the open end of the valve port 15 on the valve chamber 14 side. Joint pipes 17 and 18 are connected to the first inlet / outlet port 12 and the second inlet / outlet port 13, respectively.

弁室１４には弁体２０が図にて上下方向（弁リフト方向）に移動可能に設けられている。弁体２０は、図２に示されているように、先端外周面２０Ａにて弁ポート１５の周りに画定されている弁座部１６に着座して弁ポート１５を閉じる弁閉位置と、図１に示されているように、弁座部１６より離れて弁ポート１５を開く弁開位置との間に移動可能になっている。   A valve body 20 is provided in the valve chamber 14 so as to be movable in the vertical direction (valve lift direction) in the drawing. As shown in FIG. 2, the valve body 20 sits on a valve seat portion 16 defined around the valve port 15 on the outer peripheral surface 20 </ b> A and closes the valve port 15. As shown in FIG. 1, the valve can be moved between a valve open position that opens away from the valve seat portion 16 and opens the valve port 15.

弁ハウジング１１には電磁ソレノイド装置４０が取り付けられている。電磁ソレノイド装置４０は、吸引子レスタイプのものであり、弁ハウジング１１に固定された円筒状のプランジャチューブ４１と、プランジャチューブ４１内に画定されたプランジャ室４２に軸線方向（上下方向）に移動可能に嵌合したカップ形状のプランジャ４３と、プランジャチューブ４１の先端部（上端部）に固定されたプラグ部材４４と、プランジャチューブ４１の外側にてボルト４５によりプラグ部材４４に連結されたコの字形の外凾４６と、プランジャチューブ４１の外周囲に固定されたボビン４７Ａ、巻線部４７Ｂによる電磁コイル部４７と、プランジャ４３をプラグ部材４４側に付勢する圧縮コイルばねによるプランジャばね（弁開ばね）４８とにより構成されている。   An electromagnetic solenoid device 40 is attached to the valve housing 11. The electromagnetic solenoid device 40 is of an attractorless type, and moves in the axial direction (vertical direction) to a cylindrical plunger tube 41 fixed to the valve housing 11 and a plunger chamber 42 defined in the plunger tube 41. A cup-shaped plunger 43 fitted as possible, a plug member 44 fixed to the distal end (upper end) of the plunger tube 41, and a screw connected to the plug member 44 by a bolt 45 outside the plunger tube 41. A plunger spring (valve) including a letter-shaped outer flange 46, a bobbin 47A fixed to the outer periphery of the plunger tube 41, an electromagnetic coil portion 47 by a winding portion 47B, and a compression coil spring that biases the plunger 43 toward the plug member 44. Open spring) 48.

弁室１４は弁ポート１５とは反対側（上側）にてプランジャチューブ４１の内側（プランジャ室４２）と直接連続している。弁体２０は、弁室１４およびプランジャチューブ４１の内側にあり、ステム部２０Ｂをプランジャ４３の底部にかしめ結合されている。これにより、弁体２０とプランジャ４３とが一体化連結され、弁体２０はプランジャ４３と一体的に上下方向（軸線方向）に移動する。   The valve chamber 14 is directly continuous with the inner side (plunger chamber 42) of the plunger tube 41 on the side (upper side) opposite to the valve port 15. The valve body 20 is inside the valve chamber 14 and the plunger tube 41, and the stem portion 20 </ b> B is caulked and joined to the bottom portion of the plunger 43. Thereby, the valve body 20 and the plunger 43 are integrally connected, and the valve body 20 moves integrally with the plunger 43 in the vertical direction (axial direction).

電磁ソレノイド装置４０は、電磁コイル部４７に通電が行われていない非通電時には、プランジャばね４８のばね力によってプランジャ４３と共に弁体２０を上方（弁開方向）へ駆動する。これに対し、電磁ソレノイド装置４０は、電磁コイル部４７に通電が行われている通電時には、プランジャ４３がプランジャばね４８のばね力に抗して外凾４６の下側片部４６Ａの側に磁気的に吸引されることにより、弁体２０を下方（弁閉方向）へ駆動する。   The electromagnetic solenoid device 40 drives the valve body 20 upward (in the valve opening direction) together with the plunger 43 by the spring force of the plunger spring 48 when the electromagnetic coil unit 47 is not energized. On the other hand, in the electromagnetic solenoid device 40, when the electromagnetic coil portion 47 is energized, the plunger 43 resists the spring force of the plunger spring 48 and magnetizes the lower piece 46 </ b> A side of the outer casing 46. As a result, the valve body 20 is driven downward (in the valve closing direction).

すなわち、電磁ソレノイド装置４０は、非通電時には、図１に示されているように、プランジャばね４８のばね力により弁体２０を弁座部１６より引き離した弁開位置へ駆動し、通電時には、図２に示されているように、プランジャばね４８のばね力に抗して弁体２０を弁座部１６に着座させる弁閉位置へ駆動し、絞り弁装置１０は、常開型、通電閉型の電磁弁になっている。   That is, as shown in FIG. 1, the electromagnetic solenoid device 40 drives the valve body 20 to the valve open position separated from the valve seat portion 16 by the spring force of the plunger spring 48 when not energized, and when energized, As shown in FIG. 2, the valve element 20 is driven to the valve closed position against the spring force of the plunger spring 48, and the throttle valve device 10 is a normally open type, energized closed. It is a type solenoid valve.

図１に示されているように、弁体２０は弁ポート１５の真上位置にあり、弁体２０には弁閉状態において第１の入出口ポート１２と第２の入出口ポート１３とを連通接続する内部通路が形成されている。この内部通路の大部分は、弁ポート１５に向かい合う弁体２０の先端面（下底面）に開口した中空開口部２１によって与えられる。つまり、中空開口部２１は、弁体２０の先端面にて弁ポート１５に向けて開口（下端開口）しており、上端閉の有底孔をなしている。また、図２によく示されているように、弁体２０には中空開口部２１の上部領域に連通する複数個の径方向通路２３が穿設されている。   As shown in FIG. 1, the valve body 20 is located immediately above the valve port 15, and the valve body 20 has a first inlet / outlet port 12 and a second inlet / outlet port 13 in the valve closed state. An internal passage for communication connection is formed. Most of the internal passage is provided by a hollow opening 21 that opens at the distal end surface (lower bottom surface) of the valve body 20 facing the valve port 15. That is, the hollow opening 21 opens toward the valve port 15 at the distal end surface of the valve body 20 (lower end opening), and forms a bottomed hole with the upper end closed. As well shown in FIG. 2, the valve body 20 has a plurality of radial passages 23 communicating with the upper region of the hollow opening 21.

これにより、中空開口部２１、径方向通路２３が、弁体２０に弁閉状態において第１の入出口ポート１２と第２の入出口ポート１３とを連通接続する内部通路をなす。   As a result, the hollow opening 21 and the radial passage 23 form an internal passage that connects the first inlet / outlet port 12 and the second inlet / outlet port 13 to the valve body 20 in a valve-closed state.

径方向通路２３が穿設されている部分の弁体２０の外周部には多孔質体による円筒状フィルタ要素２４が嵌合装着されている。円筒状フィルタ要素２４は、混入物捕捉と気液混合流体中のガス粒の細分化を行う。   A cylindrical filter element 24 made of a porous material is fitted and attached to the outer peripheral portion of the valve body 20 where the radial passage 23 is formed. The cylindrical filter element 24 performs trapping of contaminants and fragmentation of gas particles in the gas-liquid mixed fluid.

中空開口部２１には、多孔質体による円盤状フィルタ要素２５、流通孔２６Ａを有する緩衝部材２６、多孔質体による円盤状フィルタ要素２７、絞り孔２８Ａを有する絞り部材２８、多孔質体による円盤状フィルタ要素２９、リング状の座金３０が順に挿入され、これらは、中空開口部２１の先端部かしめによって弁体２０に固定されている。   In the hollow opening 21, a disk-like filter element 25 made of a porous body, a buffer member 26 having a flow hole 26A, a disk-like filter element 27 made of a porous body, a throttle member 28 having a throttle hole 28A, and a disk made of a porous body A filter element 29 and a ring-shaped washer 30 are inserted in this order, and these are fixed to the valve body 20 by caulking the tip of the hollow opening 21.

上述の構成により、緩衝部材２６と絞り部材２８は、通路（中空開口部２１、径方向通路２３）を流れる流体流で見て縦方向に直列に配置されている。絞り部材２８の絞り孔２８Ａの口径は、絞り弁装置１０に要求される絞り度を得る大きさに設定されている。   With the above-described configuration, the buffer member 26 and the throttle member 28 are arranged in series in the vertical direction as viewed in the fluid flow flowing through the passage (the hollow opening 21 and the radial passage 23). The diameter of the throttle hole 28 </ b> A of the throttle member 28 is set to a size that obtains the degree of throttle required for the throttle valve device 10.

緩衝部材２６は絞り部材２８より上流側に位置し、中空開口部２１の内径よりも小さい外径で形成されていて、中空開口部２１の内周面との間に環状の隙間Ａが形成されるように、中空開口部２１と同心円上に配置されている。緩衝部材２６の流通孔２６Ａの口径は、絞り弁装置１０の絞り度に影響を与えない値に設定され、絞り部材２８における流体の圧力変動を緩和させる。   The buffer member 26 is located upstream of the throttle member 28 and is formed with an outer diameter smaller than the inner diameter of the hollow opening 21, and an annular gap A is formed between the inner peripheral surface of the hollow opening 21. In this way, it is arranged concentrically with the hollow opening 21. The diameter of the flow hole 26 </ b> A of the buffer member 26 is set to a value that does not affect the throttle degree of the throttle valve device 10, and the pressure fluctuation of the fluid in the throttle member 28 is reduced.

つまり、図１に示されているように、緩衝部材２６と絞り部材２８とが、弁体２０の内部通路（中空開口部２１、径方向通路２３）を流れる流体流で見て直列に配置されている。   That is, as shown in FIG. 1, the buffer member 26 and the throttle member 28 are arranged in series as viewed in the fluid flow flowing through the internal passage (hollow opening 21, radial passage 23) of the valve body 20. ing.

円盤状フィルタ要素２５、２７、２９は、弁体２０の内部通路（中空開口部２１、径方向通路２３）を流れる流体流で見て緩衝部材２６と絞り部材２８の前後にあり、専ら、ここを流れる気液混合流の整流化を行い、乱流の通過を抑える。   The disk-like filter elements 25, 27, and 29 are located before and after the buffer member 26 and the throttle member 28 as viewed from the fluid flow flowing through the internal passage (hollow opening 21 and radial passage 23) of the valve body 20, and are exclusively here. The gas-liquid mixed flow that flows through the rectifier is rectified to suppress the passage of turbulent flow.

円筒状フィルタ要素２４、円盤状フィルタ要素２５、２７、２９を構成する多孔質体としては、ステンレス鋼、真鍮等による連続気孔構造の多孔性焼結金属、ニッケル、ニッケル−銅合金による三次元網目状の発泡金属あるいは金属多孔質体、プラスチック粉末を原料として焼結成形した連続気孔構造のプラスチック焼結多孔質体、ステンレス鋼等による金網を数枚重ねて焼結した焼結多層金網等、ロングライフタイプの多孔質体が好ましく、これらフィルタ要素２４、２５、２７、２９は、混入物捕捉や気液混合流体中のガス粒の細分化作用、気液混合流の整流化作用を行うための適正な気孔径やメッシュに設定されている。   As the porous body constituting the cylindrical filter element 24 and the disk-like filter elements 25, 27, 29, a three-dimensional network made of a porous sintered metal having a continuous pore structure such as stainless steel or brass, nickel, or a nickel-copper alloy is used. Long foam metal or metal porous body, continuous porous plastic sintered body made of plastic powder as a raw material, sintered multi-layered metal mesh sintered with several layers of stainless steel, etc. A life-type porous body is preferable, and these filter elements 24, 25, 27 and 29 are used for trapping contaminants, subdividing the gas particles in the gas-liquid mixed fluid, and rectifying the gas-liquid mixed flow. Appropriate pore size and mesh are set.

図２に示されているように、弁ハウジング１１には可動カラー部材３１が軸線方向と径方向の各々に変位可能に設けられている。可動カラー部材３１は、真鍮、非磁性材、樹脂等により構成され、円筒部３１Ａと、円筒部３１Ａの上端に一体形成された上部フランジ３１Ｂとを有し、上部フランジ３１Ｂの下底面が、中心軸線に直交する方向に延在する環状の可動側摩擦面をなしている。   As shown in FIG. 2, a movable collar member 31 is provided in the valve housing 11 so as to be displaceable in the axial direction and the radial direction. The movable collar member 31 is made of brass, non-magnetic material, resin, or the like, and has a cylindrical portion 31A and an upper flange 31B integrally formed on the upper end of the cylindrical portion 31A. The lower bottom surface of the upper flange 31B is the center. An annular movable friction surface extending in a direction perpendicular to the axis is formed.

弁ハウジング１１は、プランジャチューブ４１の付け根部（プランジャチューブ４１の弁ハウジング１１に対する固定端部）に段差部１１Ａを有し、段差部１１Ａの上面が、中心軸線に直交する方向に延在する環状の固定側摩擦面をなしている。この固定側摩擦面には、可動カラー部材３１の上部フランジ３１Ｂの下底面がなす可動側摩擦面が摺動可能に面接触している。   The valve housing 11 has a step portion 11A at a base portion of the plunger tube 41 (a fixed end portion of the plunger tube 41 with respect to the valve housing 11), and an upper surface of the step portion 11A extends in a direction perpendicular to the central axis. It has a fixed friction surface. The movable friction surface formed by the lower bottom surface of the upper flange 31B of the movable collar member 31 is in slidable surface contact with the fixed friction surface.

可動カラー部材３１の円筒部３１Ａは、上部フランジ３１Ｂと弁ハウジング１１の段差部１１Ａとの係合によって吊り下げ状態で、弁室１４内に位置し、弁開状態での弁体２０の先端側の外周を、全周、取り囲んでいる。   The cylindrical portion 31A of the movable collar member 31 is located in the valve chamber 14 in a suspended state by the engagement between the upper flange 31B and the stepped portion 11A of the valve housing 11, and the distal end side of the valve body 20 in the valve open state. The outer periphery of the entire circumference is surrounded.

可動カラー部材３１の上部フランジ３１Ｂにはプランジャばね４８の下端側の巻端が着座している。プランジャばね４８の上端側の巻端はプランジャ４３の段差部４３Ａに着座している。これにより、可動カラー部材３１は、プランジャばね４８のばね力を及ぼされ、上述の可動側摩擦面を弁ハウジング１１の上述の固定側摩擦面に弾力的に付勢されている。すなわち、可動カラー部材３１の可動側摩擦面が弁ハウジング１１の固定側摩擦面に面接触状態で押し付けられている。   A winding end on the lower end side of the plunger spring 48 is seated on the upper flange 31 </ b> B of the movable collar member 31. The winding end on the upper end side of the plunger spring 48 is seated on the stepped portion 43 </ b> A of the plunger 43. Thereby, the movable collar member 31 is subjected to the spring force of the plunger spring 48 and elastically biases the above-described movable side friction surface to the above-described fixed side friction surface of the valve housing 11. That is, the movable friction surface of the movable collar member 31 is pressed against the fixed friction surface of the valve housing 11 in a surface contact state.

つぎに、上述の構成による絞り弁装置１０の動作について説明する。   Next, the operation of the throttle valve device 10 configured as described above will be described.

電磁ソレノイド装置４０に通電が行われていない状態では、図１に示されているように、プランジャばね４８のばね力によってプランジャ４３と共に弁体２０が持ち上げられて弁体２０が弁座部１６より離れ、弁ポート１５が完全に開かれた全開の実質的な絞り作用がない弁開状態が得られる。   In a state where the electromagnetic solenoid device 40 is not energized, the valve body 20 is lifted together with the plunger 43 by the spring force of the plunger spring 48 as shown in FIG. A valve open state is obtained in which the valve port 15 is fully open and there is no substantial throttling action when fully open.

この弁開状態時には、可動カラー部材３１の円筒部３１Ａによって弁体２０の先端側外周が取り囲まれるので、弁室１４内を第１の入出口ポート１２より、弁ポート１５、第２の入出口ポート１３へ流れる流体流（乱流）が弁体２０に直接当たらないようになる。これにより、弁体２０に作用する流体流による加振力が低減する。   When the valve is open, the outer periphery of the valve body 20 is surrounded by the cylindrical portion 31 </ b> A of the movable collar member 31, so that the inside of the valve chamber 14 is connected to the valve port 15, the second inlet / outlet from the first inlet / outlet port 12. The fluid flow (turbulent flow) flowing to the port 13 does not directly hit the valve body 20. Thereby, the excitation force by the fluid flow which acts on the valve body 20 reduces.

また、可動カラー部材３１が弁体２０の加振運動を受けて径方向に動くことにより、可動側摩擦面（上部フランジ３１Ｂの下底面）と固定側摩擦面（弁ハウジング１１の段差部１１Ａの上面）との摩擦によって、弁体２０に作用している振動エネルギが熱エネルギに変換され、振動減衰作用、すなわちダンパ効果が得られる。これらのことにより、弁体２０が弁室１４内の流体流の影響を受け難くなり、弁体２０が共振することが避けられ、弁鳴りを生じなくなる。   Further, the movable collar member 31 receives the excitation motion of the valve body 20 and moves in the radial direction, so that the movable side friction surface (the lower bottom surface of the upper flange 31B) and the fixed side friction surface (the step portion 11A of the valve housing 11). The vibration energy acting on the valve body 20 is converted into heat energy by friction with the upper surface), and a vibration damping action, that is, a damper effect is obtained. As a result, the valve body 20 is not easily affected by the fluid flow in the valve chamber 14, the resonance of the valve body 20 is avoided, and no ringing occurs.

電磁ソレノイド装置４０に通電が行われると、プランジャばね４８のばね力に抗してプランジャ４３が外凾４６の下側片部４６Ａの側に磁気的に吸引され、弁体２０が弁閉方向へ駆動され、図２に示されているように、弁体２０が先端外周面２０Ａをもって弁座部１６に着座する。   When the electromagnetic solenoid device 40 is energized, the plunger 43 is magnetically attracted to the lower piece 46A side of the outer rod 46 against the spring force of the plunger spring 48, and the valve body 20 is moved in the valve closing direction. As shown in FIG. 2, the valve body 20 is driven and seated on the valve seat portion 16 with the outer peripheral surface 20A.

この弁閉状態では、円筒状フィルタ要素２４、径方向通路２３、円盤状フィルタ要素２５、緩衝部材２６の流通孔２６Ａ、円盤状フィルタ要素２７、絞り部材２８の絞り孔２８Ａ、円盤状フィルタ要素２９をもって弁室１４と第２の入出口ポート１３とが連通し、第１の入出口ポート１２が高圧側で、第２の入出口ポート１３が低圧側である場合には、円筒状フィルタ要素２４→径方向通路２３→円盤状フィルタ要素２５→緩衝部材２６の流通孔２６Ａ、あるいは、弁体２０の中空開口部２１の内周面と緩衝部材２６の外周面との間に形成される環状の隙間Ａ→円盤状フィルタ要素２７→絞り部材２８の絞り孔２８Ａ→円盤状フィルタ要素２９の順に、液とガスの混合冷媒等の流体が流れる。   In this valve closed state, the cylindrical filter element 24, the radial passage 23, the disk-shaped filter element 25, the flow hole 26 </ b> A of the buffer member 26, the disk-shaped filter element 27, the throttle hole 28 </ b> A of the throttle member 28, and the disk-shaped filter element 29. When the valve chamber 14 and the second inlet / outlet port 13 communicate with each other, the first inlet / outlet port 12 is on the high pressure side, and the second inlet / outlet port 13 is on the low pressure side, the cylindrical filter element 24 → radial passage 23 → disk-like filter element 25 → circulation hole 26A of the buffer member 26 or an annular shape formed between the inner peripheral surface of the hollow opening 21 of the valve body 20 and the outer peripheral surface of the buffer member 26 A fluid such as a mixed refrigerant of liquid and gas flows in the order of the gap A → the disk-shaped filter element 27 → the throttle hole 28A of the throttle member 28 → the disk-shaped filter element 29.

上述のように流体が流れることにより、まず、円筒状で表面積が大きい円筒状フィルタ要素２４によって流体流れ中のコンタミネーションの捕捉が行われると共に液流中の気泡（ガス粒）の細分化が行われる。そして流体は、複数個の径方向通路２３を通り、分散された流れで円盤状フィルタ要素２５に流入し、円盤状フィルタ要素２５より、まず、絞り弁装置１０の絞り度に影響を与えない口径に設定された緩衝部材２６の流通孔２６Ａ、あるいは、弁体２０の中空開口部２１の内周面と緩衝部材２６の外周面との間に形成される環状の隙間Ａを流れ、この流通孔２６Ａを流体が流れることによって、あるいは、緩衝部材２６の外周を流体が流れることによって、流体の圧力変動、特に、相変化が緩やかになり、振動的な圧力変動の振幅が小さくなる。   When the fluid flows as described above, first, the cylindrical filter element 24 having a large cylindrical surface area captures contamination in the fluid flow and subdivides the bubbles (gas particles) in the liquid flow. Is called. Then, the fluid passes through the plurality of radial passages 23 and flows into the disc-like filter element 25 in a dispersed flow, and from the disc-like filter element 25, first, the aperture diameter that does not affect the degree of throttling of the throttle valve device 10. The flow hole 26 </ b> A of the buffer member 26, or the annular gap A formed between the inner peripheral surface of the hollow opening 21 of the valve body 20 and the outer peripheral surface of the buffer member 26, is set. When the fluid flows through 26A or when the fluid flows around the outer periphery of the buffer member 26, the pressure variation of the fluid, in particular, the phase change becomes gentle, and the amplitude of the oscillatory pressure variation decreases.

その後、流体は、円盤状フィルタ要素２７を通過し、絞り部材２８の絞り孔２８Ａを流れて絞られる。この絞り部材２８の絞り孔２８Ａを流れる流体は、これより上流側の緩衝部材２６によって振動的な圧力変動の振幅が小さくなっているから、絞り部材２８における間欠的な冷媒通過音の発生が低減する。   Thereafter, the fluid passes through the disk-shaped filter element 27 and flows through the throttle hole 28A of the throttle member 28 and is throttled. Since the fluid flowing through the throttle hole 28A of the throttle member 28 has the amplitude of the vibrational pressure fluctuation reduced by the buffer member 26 on the upstream side, the generation of intermittent refrigerant passing sound in the throttle member 28 is reduced. To do.

その後、流体は、円盤状フィルタ要素２９を通過して第２の入出口ポート１３へ流れる。この流体流において、緩衝部材２６と絞り部材２８の各々の前後に多孔質体による円盤状フィルタ要素２５、２７、２９が配置されていることにより、冷媒流動音の伝播も防止される。   Thereafter, the fluid flows through the disc-like filter element 29 to the second inlet / outlet port 13. In this fluid flow, the disk-like filter elements 25, 27, and 29 made of a porous material are disposed before and after each of the buffer member 26 and the throttle member 28, so that propagation of refrigerant flow noise is also prevented.

図３は上述した実施形態による絞り弁装置１０をサイクルドライ弁として組み込まれたこの発明による空気調和機を示している。   FIG. 3 shows an air conditioner according to the present invention in which the throttle valve device 10 according to the above-described embodiment is incorporated as a cycle dry valve.

この空気調和機は、圧縮機１００と、室外熱交換器１０１と、第１の室内熱交換器１０２と、第２の室内熱交換器１０３と、これらをループ接続する冷媒通路１０５〜１１３と、室外熱交換器１０１と第１の室内熱交換器１０２との間の冷媒通路（１０７〜１０９）に設けられた膨張弁１０４と、冷房モードと暖房モードとの切換のためにループ接続された冷媒通路１０５〜１１３における冷媒の流れ方向を反転する四方弁１１５とを有している。   This air conditioner includes a compressor 100, an outdoor heat exchanger 101, a first indoor heat exchanger 102, a second indoor heat exchanger 103, and refrigerant passages 105 to 113 that connect these in a loop, An expansion valve 104 provided in a refrigerant passage (107 to 109) between the outdoor heat exchanger 101 and the first indoor heat exchanger 102, and a refrigerant connected in a loop for switching between a cooling mode and a heating mode And a four-way valve 115 for reversing the flow direction of the refrigerant in the passages 105 to 113.

第１の室内熱交換器１０２と第２の室内熱交換器１０３との間の冷媒通路１１０には絞り弁装置（サイクルドライ弁）１０が接続されている。   A throttle valve device (cycle dry valve) 10 is connected to the refrigerant passage 110 between the first indoor heat exchanger 102 and the second indoor heat exchanger 103.

冷房モードでは、図３にて実線の矢印で示されている方向に冷媒が循環し、絞り弁装置１０が弁開している状態で、冷房モードが得られ、絞り弁装置１０が弁閉している状態では、当該絞り弁装置１０が絞り弁として作用し、冷媒が、第１の入出口ポート１２より、円筒状フィルタ要素２４→径方向通路２３→円盤状フィルタ要素２５→緩衝部材２６の流通孔２６Ａ、あるいは、弁体２０の中空開口部２１の内周面と緩衝部材２６の外周面との間に形成される環状の隙間Ａ→円盤状フィルタ要素２７→絞り部材２８の絞り孔２８Ａ→円盤状フィルタ要素２９の順路（図２参照）を経て第２の入出口ポート１３へ流れ、冷房サイクルドライモード（冷房時除湿）が得られる。   In the cooling mode, the refrigerant circulates in the direction indicated by the solid line arrow in FIG. 3, and the cooling mode is obtained in a state where the throttle valve device 10 is opened, and the throttle valve device 10 is closed. In this state, the throttle valve device 10 acts as a throttle valve, and the refrigerant flows from the first inlet / outlet port 12 into the cylindrical filter element 24 → the radial passage 23 → the disk-like filter element 25 → the buffer member 26. An annular gap A formed between the flow hole 26A or the inner peripheral surface of the hollow opening 21 of the valve body 20 and the outer peripheral surface of the buffer member 26 → the disc-like filter element 27 → the throttle hole 28A of the throttle member 28. → The flow passes through the disc-like filter element 29 (see FIG. 2) to the second inlet / outlet port 13 to obtain the cooling cycle dry mode (dehumidification during cooling).

これにより、冷房サイクルドライモードでの絞り弁装置１０における間欠的な冷媒通過音の発生が低く、絞り弁装置１０より上流側の第１の室内熱交換器１０２での共鳴による騒音の発生が低減する。   Thereby, the generation of intermittent refrigerant passing sound in the throttle valve device 10 in the cooling cycle dry mode is low, and the generation of noise due to resonance in the first indoor heat exchanger 102 upstream of the throttle valve device 10 is reduced. To do.

なお、暖房モードでは、図３の矢印で示されている方向とは逆方向に冷媒が循環し、通常、絞り弁装置１０は弁開状態を維持する。   In the heating mode, the refrigerant circulates in the direction opposite to the direction indicated by the arrow in FIG. 3, and the throttle valve device 10 normally maintains the valve open state.

この発明による絞り弁装置の一つの実施形態を示す断面図である。It is sectional drawing which shows one Embodiment of the throttle valve apparatus by this invention. 一つの実施形態による絞り弁装置の要部の拡大断面図である。It is an expanded sectional view of the important section of a throttle valve device by one embodiment. この発明による絞り弁装置が組み込まれた空気調和機を示すブロック図である。It is a block diagram which shows the air conditioner incorporating the throttle valve apparatus by this invention. 絞り弁装置の先行技術例を示す断面図であるIt is sectional drawing which shows the prior art example of a throttle valve apparatus.

符号の説明Explanation of symbols

１０ 絞り弁装置
１１ 弁ハウジング
１２ 第１の入出口ポート
１３ 第２の入出口ポート
１４ 弁室
１５ 弁ポート
１６ 弁座部
２０ 弁体
２４ 円筒状フィルタ要素
２５ 円盤状フィルタ要素
２６ 緩衝部材
２７ 円盤状フィルタ要素
２８ 絞り部材
２９ 円盤状フィルタ要素
３１ 可動カラー部材
４０ 電磁ソレノイド装置 DESCRIPTION OF SYMBOLS 10 Throttle valve apparatus 11 Valve housing 12 1st inlet / outlet port 13 2nd inlet / outlet port 14 Valve chamber 15 Valve port 16 Valve seat part 20 Valve body 24 Cylindrical filter element 25 Disc shaped filter element 26 Buffer member 27 Disc shape Filter element 28 Diaphragm member 29 Disc-shaped filter element 31 Movable collar member 40 Electromagnetic solenoid device

Claims (3)

第１の入出口ポート、第２の入出口ポート、前記第１の入出口ポートと常時連通している弁室、前記弁室と前記第２の入出口ポートとの間に設けられた弁ポートを画定する弁ハウジングと、前記弁室内に設けられて前記弁ポートを開閉する弁体とを有する絞り弁装置において、
前記弁体に弁閉状態において前記第１の入出口ポートと前記第２の入出口ポートとを連通接続する通路が形成され、前記通路に、緩衝部材と絞り部材とが、当該通路を流れる流体流で見て直列に配置されている絞り弁装置。 A first inlet / outlet port, a second inlet / outlet port, a valve chamber always in communication with the first inlet / outlet port, and a valve port provided between the valve chamber and the second inlet / outlet port A throttle valve device including: a valve housing that defines a valve body; and a valve body that is provided in the valve chamber and opens and closes the valve port.
A passage that connects the first inlet / outlet port and the second inlet / outlet port in a valve closed state is formed in the valve body, and a buffer member and a throttle member flow in the passage in the passage. Throttle valve device arranged in series when viewed in flow. 前記通路を流れる流体流で見て前記緩衝部材と前記絞り部材の各々の前後に多孔質体によるフィルタ要素が配置されている請求項１記載の絞り弁装置。   2. The throttle valve device according to claim 1, wherein a filter element made of a porous body is disposed before and after each of the buffer member and the throttle member as viewed in the fluid flow flowing through the passage. 圧縮機と、室外熱交換器と、第１の室内熱交換器と、第２の室内熱交換器と、これらをループ接続する冷媒通路と、前記室外熱交換器と前記第１の室内熱交換器との間の冷媒通路に設けられた膨張弁とを有し、前記第１の室内熱交換器と前記第２の室内熱交換器との間に、請求項１または２記載の絞り弁装置が接続されている空気調和機。   A compressor, an outdoor heat exchanger, a first indoor heat exchanger, a second indoor heat exchanger, a refrigerant passage connecting these in a loop, the outdoor heat exchanger, and the first indoor heat exchange The throttle valve device according to claim 1, further comprising an expansion valve provided in a refrigerant passage between the first indoor heat exchanger and the second indoor heat exchanger. Is connected to the air conditioner.
JP2004149242A 2004-05-19 2004-05-19 Throttle valve device and air conditioner Pending JP2005331153A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004149242A JP2005331153A (en) 2004-05-19 2004-05-19 Throttle valve device and air conditioner
CN2005100727712A CN100406791C (en) 2004-05-19 2005-05-19 throttle valve device and air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004149242A JP2005331153A (en) 2004-05-19 2004-05-19 Throttle valve device and air conditioner

Publications (1)

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