JPH08210733A - Expansion valve with solenoid-operated valve - Google Patents
Expansion valve with solenoid-operated valveInfo
- Publication number
- JPH08210733A JPH08210733A JP7017093A JP1709395A JPH08210733A JP H08210733 A JPH08210733 A JP H08210733A JP 7017093 A JP7017093 A JP 7017093A JP 1709395 A JP1709395 A JP 1709395A JP H08210733 A JPH08210733 A JP H08210733A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- passage
- expansion valve
- communication
- plunger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/06—Details of flow restrictors or expansion valves
- F25B2341/068—Expansion valves combined with a sensor
- F25B2341/0683—Expansion valves combined with a sensor the sensor is disposed in the suction line and influenced by the temperature or the pressure of the suction gas
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は車両用空調装置等の冷凍
システムに適用される電磁弁付膨張弁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion valve with a solenoid valve applied to a refrigeration system such as a vehicle air conditioner.
【０００２】[0002]
【従来の技術】車両用空調装置に用いられる冷凍システ
ムとして、一個の圧縮機Ｐと凝縮機Ｃを有する同一の冷
凍サイクル内において、並列回路によりそれぞれ温度膨
張弁Ｂ１，Ｂ２を介して複数の蒸発器Ｅ１，Ｅ２を図７
の如く並設し、メイン（例えば運転席空調用）の蒸発器
Ｅ１だけを作動させる場合は膨張弁Ｂ２の上流側に組込
んだ電磁弁Ａを閉弁し、メインの蒸発器Ｅ１と補助（例
えば客席空調用）の蒸発器Ｅ２を両方とも作動させる場
合には前記電磁弁Ａを開弁させるようにした空調装置は
従来から知られている。2. Description of the Related Art As a refrigeration system used for a vehicle air conditioner, a plurality of evaporations are made in parallel circuits in a same refrigeration cycle having a compressor P and a condenser C via temperature expansion valves B1 and B2, respectively. Figure E7 and E2
When only the main (for example, driver's seat air conditioning) evaporator E1 is operated in parallel, the electromagnetic valve A incorporated upstream of the expansion valve B2 is closed, and the main evaporator E1 and auxiliary ( Conventionally, an air conditioner is known in which the solenoid valve A is opened when both evaporators E2 (for passenger seat air conditioning) are operated.
【０００３】[0003]
【発明が解決しようとする課題】しかし図７に示す従来
の冷凍システムでは、電磁弁Ａと膨張弁Ｂ２が図示の如
く離間して配置されるため、電磁弁Ａを開いた時に高圧
の液冷媒が電磁弁Ａと膨張弁Ｂ２の離間管路部Ｘで加速
されて膨張弁Ｂ２側に急激に流れるようになり、この高
圧液冷媒の膨張弁Ｂ２に対する急速流入によって大きな
冷媒液ハンマー音（ドンというような液冷媒の衝撃音）
が発生するという問題があった。この液冷媒のハンマー
音は、電磁弁Ａと膨張弁Ｂ２の離隔距離が長くなるほ
ど、また配管の内容積が大きいほど大きくなる。However, in the conventional refrigeration system shown in FIG. 7, since the solenoid valve A and the expansion valve B2 are arranged separately from each other as shown in the figure, when the solenoid valve A is opened, a high-pressure liquid refrigerant is opened. Is accelerated in the separation conduit X between the solenoid valve A and the expansion valve B2 and suddenly flows toward the expansion valve B2 side, and the rapid inflow of this high-pressure liquid refrigerant into the expansion valve B2 causes a large refrigerant liquid hammer noise (Impact sound of liquid refrigerant)
There was a problem that occurs. The hammer noise of the liquid refrigerant becomes louder as the distance between the solenoid valve A and the expansion valve B2 becomes longer and the inner volume of the pipe becomes larger.
【０００４】本発明は前記従来の問題を解消するために
なされたもので、その目的は電磁弁開閉時の冷媒液ハン
マー音を防止すると共に、温度膨張弁への圧力損失を低
減した電磁弁付膨張弁を提供することにある。The present invention has been made to solve the above-mentioned conventional problems, and its purpose is to prevent a refrigerant liquid hammer noise at the time of opening and closing an electromagnetic valve and to reduce a pressure loss to a temperature expansion valve. To provide an expansion valve.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するた
め、第１の発明に係わる電磁弁付膨張弁は、高圧の液冷
媒を弁室１に流入させる一次側通路２と、前記弁室１に
連通し減圧された低圧の液冷媒が流出する二次側通路８
と、蒸発器Ｅから圧縮機Ｐに向かう気相冷媒が通過する
気相冷媒通路９とを有する弁本体１０に、ダイヤフラム
１１で作動される感温・圧力伝達部材１２と弁体１３を
組込んだ前記ダイヤフラム１１の下部空間１８が前記気
相冷媒通路９と連通している温度膨張弁Ｂを備え、この
温度膨張弁の高圧液冷媒が流入する一次側通路２を、入
口通路２ａと連絡路２ｂからなり、この入口通路２ａと
連絡路２ｂの通路連通部に弁口３を設けた構成とし、こ
の温度膨張弁Ｂの通路連通部に前記弁口３に接離し前記
一次側通路２を開閉する電磁弁Ａを付設したことを特徴
とする。In order to achieve the above object, an expansion valve with a solenoid valve according to a first aspect of the present invention comprises a primary passage 2 for allowing a high-pressure liquid refrigerant to flow into a valve chamber 1, and the valve chamber 1. Secondary passage 8 through which the decompressed low-pressure liquid refrigerant flows out
And a valve body 10 having a gas-phase refrigerant passage 9 through which a gas-phase refrigerant flowing from the evaporator E to the compressor P passes, the temperature-sensing / pressure transmitting member 12 and the valve body 13 which are operated by the diaphragm 11 are incorporated. The lower space 18 of the diaphragm 11 is provided with a temperature expansion valve B communicating with the vapor phase refrigerant passage 9, and the primary passage 2 into which the high pressure liquid refrigerant of the temperature expansion valve flows is connected to the inlet passage 2a. 2b, and a valve port 3 is provided at a passage communication portion between the inlet passage 2a and the communication passage 2b, and the passage communication portion of the temperature expansion valve B is brought into contact with or separated from the valve opening 3 to open or close the primary passage 2. It is characterized in that a solenoid valve A is installed.
【０００６】第２の発明に係わる電磁弁付膨張弁は、高
圧の液冷媒を弁室１に流入させる一次側通路２と、前記
弁室１に連通し減圧された低圧の液冷媒が流出する二次
側通路８と、蒸発器Ｅから圧縮機Ｐに向かう気相冷媒が
通過する気相冷媒通路９とを有する弁本体１０に、ダイ
ヤフラム１１で作動される感温・圧力伝達部材１２と弁
体１３を組込んだ前記ダイヤフラム１１の下部空間１８
が前記気相冷媒通路９と連通している温度膨張弁Ｂを備
え、この温度膨張弁Ｂの高圧液冷媒が流入する一次側通
路２を、入口通路２ａと連絡路２ｂからなり、この入口
通路２ａと連絡路２ｂの通路連通部に弁口３を設けた構
成とし、この温度膨張弁Ｂの弁本体１０に取付けられる
連通路形成部材４に前記弁口部３に開口する電磁弁取付
部５を設け、この連通路形成部材４の電磁弁取付部５に
前記弁口３に接離し前記一次側通路２を開閉する電磁弁
Ａを取付けたことを特徴とする。In the expansion valve with a solenoid valve according to the second aspect of the present invention, a primary side passage 2 for introducing a high-pressure liquid refrigerant into the valve chamber 1 and a low-pressure low-pressure liquid refrigerant communicating with the valve chamber 1 flow out. A valve body 10 having a secondary passage 8 and a vapor-phase refrigerant passage 9 through which vapor-phase refrigerant flowing from the evaporator E to the compressor P passes, a temperature-sensing / pressure transmitting member 12 operated by a diaphragm 11 and a valve. Lower space 18 of the diaphragm 11 incorporating the body 13
Is provided with a temperature expansion valve B communicating with the gas-phase refrigerant passage 9, and the primary passage 2 into which the high-pressure liquid refrigerant of the temperature expansion valve B flows is composed of an inlet passage 2a and a communication passage 2b. 2a and the communication passage 2b are provided with a valve port 3 in a passage communication portion, and a solenoid valve mounting portion 5 that opens to the valve opening portion 3 is formed in a communication passage forming member 4 attached to the valve body 10 of the temperature expansion valve B. Is provided, and a solenoid valve A for contacting with and separating from the valve port 3 to open and close the primary side passage 2 is attached to the solenoid valve mounting portion 5 of the communication passage forming member 4.
【０００７】前記電磁弁Ａは連通路形成部材４の電磁弁
取付部５に装着されるシリンダ筒３０と、前記弁口３に
接離する弁部３１を有し前記シリンダ筒３０内に開弁方
向及び閉弁方向に移動できるように挿入されたプランジ
ャ３２と、前記シリンダ筒３０の外側に配設される電磁
コイル３３及び前記シリンダ筒３０の端部に嵌着され前
記コイル３３の通電励磁による磁気吸引力で前記プラン
ジャ３２を開弁方向に吸引移動させる吸引子３４と、こ
の吸引子３４と前記プランジャ３２との間に組込まれ前
記コイル３３の消磁時に前記プランジャ３２を閉弁方向
に弾発移動させるプランジャ付勢ばね３５とを具備する
構成のものであっても良いが、前記のような液ハンマー
音を効果的に防止するためには、前記プランジャ３２に
シリンダ筒３０の内周面を摺動可能なシールパッキン３
８を取付け、このシールパッキン３８に流体流通の絞り
作用をなす切欠溝３８ａを形成して、前記プランジャ３
２と吸引子３４間の前記パッキン３８で仕切られる空間
をプランジャ動作を緩やかにさせるダンパー室４０とし
た構成とすることが望ましい。The solenoid valve A has a cylinder cylinder 30 which is mounted on the solenoid valve mounting portion 5 of the communication passage forming member 4, and a valve portion 31 which comes into contact with and separates from the valve port 3, and a valve is opened in the cylinder cylinder 30. The plunger 32 inserted so as to be movable in the valve closing direction and the valve closing direction, the electromagnetic coil 33 disposed outside the cylinder cylinder 30, and fitted on the end of the cylinder cylinder 30 by energizing the coil 33 by energization. A suction element 34 for attracting and moving the plunger 32 in the valve opening direction by a magnetic attraction force, and a plunger 32 which is incorporated between the suction element 34 and the plunger 32 and repels the plunger 32 in the valve closing direction when the coil 33 is demagnetized. It may be configured to include a plunger urging spring 35 for moving, but in order to effectively prevent the liquid hammer noise as described above, the plunger 32 is provided with a cylinder tube 30. Slidable seal packing 3 peripheral surface
8 is attached to the seal packing 38, and a notch groove 38a is formed in the seal packing 38 so as to restrict the fluid flow.
It is desirable that the space partitioned by the packing 38 between the two and the suction element 34 be a damper chamber 40 for slowing the plunger operation.
【０００８】[0008]
【作用】温度膨張弁Ｂの高圧液冷媒が流入する一次側通
路２を、入口通路２ａと連絡路２ｂからなり、この入口
通路２ａと連絡路２ｂの通路連通部に弁口３を設けた構
成とし、この温度膨張弁Ｂに前記弁口３に接離し高圧の
一次側通路２を開閉する電磁弁Ａを付設し又は取付けた
構造にすると、電磁弁Ａと温度膨張弁Ｂとの間の通路を
短縮し且つ該通路の内容積を減らして、電磁弁Ａを開い
た時の高圧液冷媒の膨張及び加速流れを抑制し、冷媒液
ハンマー音の発生を防止することができると共に、前記
連絡路２ｂにより温度膨張弁Ｂへの圧力損失を低減し、
温度膨張弁Ｂへ常に適正な液冷媒を送って、冷房効率を
一段と向上させることができる。The primary passage 2 of the temperature expansion valve B into which the high-pressure liquid refrigerant flows is composed of the inlet passage 2a and the communication passage 2b, and the valve passage 3 is provided at the passage communication portion between the inlet passage 2a and the communication passage 2b. When the temperature expansion valve B is provided with or attached with a solenoid valve A that comes in contact with and separates from the valve port 3 and opens and closes the high-pressure primary passage 2, the passage between the solenoid valve A and the temperature expansion valve B is provided. And the internal volume of the passage can be reduced to suppress the expansion and accelerated flow of the high-pressure liquid refrigerant when the solenoid valve A is opened, and to prevent the refrigerant liquid hammer noise from being generated, and the communication path. 2b reduces the pressure loss to the temperature expansion valve B,
By constantly sending an appropriate liquid refrigerant to the temperature expansion valve B, it is possible to further improve the cooling efficiency.
【０００９】また、温度膨張弁Ｂの連通路形成部材４に
前記弁口部３に開口する電磁弁取付部５を設け、この電
磁弁取付部５に装着される電磁弁Ａを請求項３で特定す
る構成とした場合には、シールパッキン３８の切欠溝３
８ａによるダンパー作用でプランジャ３２の開弁スピー
ドを緩やかにして、前記のような液ハンマー音を効果的
に防止することができる。Further, a solenoid valve mounting portion 5 that opens to the valve port portion 3 is provided in the communication passage forming member 4 of the temperature expansion valve B, and the solenoid valve A mounted on the solenoid valve mounting portion 5 is claimed in claim 3. If the configuration is specified, the cutout groove 3 of the seal packing 38
The damper action by 8a can slow the valve opening speed of the plunger 32 and effectively prevent the liquid hammer noise as described above.
【００１０】[0010]
【実施例】以下、本発明の第１の実施例を図１乃至図４
に従い具体的に説明する。図中Ｂは熱交換器としての蒸
発器Ｅ（図２参照）の機能を蒸発圧力がある一定値以下
にならないように制御する温度膨張弁で、高圧の液冷媒
を弁室１に流入させる一次側通路２と、前記弁室１に連
通し減圧された低圧の液冷媒が流出する二次側通路８
と、蒸発器Ｅから圧縮機Ｐに向かう気相冷媒が通過する
気相冷媒通路９とを有する弁本体１０に、ダイヤフラム
１１で作動される感温・圧力伝達部材１２と弁体１３を
組込んだ構成となっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
This will be described in detail according to In the figure, B is a temperature expansion valve that controls the function of the evaporator E (see FIG. 2) as a heat exchanger so that the evaporating pressure does not fall below a certain value. Secondary side passage 8 communicating with the side passage 2 and the low-pressure liquid refrigerant that is decompressed and communicates with the valve chamber 1.
And a valve body 10 having a gas-phase refrigerant passage 9 through which a gas-phase refrigerant flowing from the evaporator E to the compressor P passes, the temperature-sensing / pressure transmitting member 12 and the valve body 13 which are operated by the diaphragm 11 are incorporated. It is configured.
【００１１】前記ダイヤフラム１１は、図２に示すよう
にパワーエレメント部１４の上蓋１５と下支持部１６の
外周縁に挾持して溶接され、上蓋１５とダイヤフラム１
１との間に上部圧力空間１７（この空間内には三弗化メ
タンやプロパン等の作動流体がキャピラリー１７ａを介
して封入される）を、前記ダイヤフラム１１と下支持部
１６との間に下部圧力空間１８を形成している。As shown in FIG. 2, the diaphragm 11 is clamped and welded to the outer peripheral edges of the upper lid 15 and the lower support portion 16 of the power element portion 14, so that the upper lid 15 and the diaphragm 1 are joined together.
1, an upper pressure space 17 (a working fluid such as methane trifluoride or propane is enclosed in this space via a capillary 17a) and a lower space between the diaphragm 11 and the lower support portion 16. A pressure space 18 is formed.
【００１２】この下部圧力空間１８は、感温・圧力伝達
部材１２が貫通する円孔１９を介して気相冷媒通路９と
連通し、この気相冷媒通路９の中に感温・圧力伝達部材
１２の大部分が露出して気相冷媒流と熱交換しており、
これによってダイヤフラム上部圧力空間１７の作動流体
温度は気相冷媒通路９を流れる気相冷媒温度に略一致す
ることが保証されるようになっている。The lower pressure space 18 communicates with the gas-phase refrigerant passage 9 through a circular hole 19 through which the temperature-sensing / pressure transmitting member 12 penetrates. Most of the 12 are exposed and exchange heat with the vapor phase refrigerant flow,
This ensures that the temperature of the working fluid in the diaphragm upper pressure space 17 substantially matches the temperature of the vapor phase refrigerant flowing through the vapor phase refrigerant passage 9.
【００１３】前記弁体１３は感温・圧力伝達部材１２の
下端部に当接するようにバイアスばね２０（バイアス力
を調整するための調節ナット２１と共に弁室１内に組込
まれている）で弁座部２２の方向に付勢され、凝縮器Ｃ
及びレシーバタンクＴを出た高圧の液冷媒が後述する入
口通路２ａより弁室１内に入り、弁体１３と弁座部２２
で構成するオリフィス部を通過して減圧されるようにな
っている。The valve body 13 is a valve with a bias spring 20 (built into the valve chamber 1 together with an adjusting nut 21 for adjusting the bias force) so as to come into contact with the lower end of the temperature-sensitive / pressure-transmitting member 12. The condenser C is urged toward the seat 22
And the high-pressure liquid refrigerant exiting the receiver tank T enters the valve chamber 1 through an inlet passage 2a described later, and the valve body 13 and the valve seat portion 22
The pressure is reduced by passing through the orifice portion constituted by.
【００１４】このとき、前記弁体１３の位置は次のよう
に規制される。すなわち、前記弁体１３の位置は、ダイ
ヤフラム上部圧力空間１７内の作動流体の圧力と、ダイ
ヤフラム下部圧力空間１８の圧力との差で生じる力を受
けて、図２ではバイアスばね２０の力に抗して下に押さ
れる。At this time, the position of the valve body 13 is regulated as follows. That is, the position of the valve body 13 receives the force generated by the difference between the pressure of the working fluid in the diaphragm upper pressure space 17 and the pressure in the diaphragm lower pressure space 18, and in FIG. And then pushed down.
【００１５】前記弁本体１０の一次側通路２は、凝縮器
Ｃ及びレシーバタンクＴの出口側に図２の如く配管接続
される入口通路２ａと、この入口通路２ａに図１（ｂ）
の如く連通し前記弁室１に図１（ａ）の如く開口する連
絡路２ｂとからなり、この入口通路２ａと連絡路２ｂの
通路連通部（実施例では連通路形成部材４）に短管状の
弁口３を設けた構成となっている。The primary passage 2 of the valve body 10 has an inlet passage 2a connected to the outlets of the condenser C and the receiver tank T as shown in FIG. 2, and the inlet passage 2a shown in FIG.
As shown in FIG. 1A, the valve chamber 1 communicates with each other as shown in FIG. 1A, and has a short tubular shape in the passage communication portion (the communication passage forming member 4 in the embodiment) of the inlet passage 2a and the communication passage 2b. The valve opening 3 is provided.
【００１６】前記連通路形成部材４は、入口通路２ａと
連絡路２ｂの開孔端を図１（ｂ）の如く接続する連通孔
２ａ′，２ｂ′と、この連通孔２ｂ′の内端部に突出す
る短管状の弁口３と、この弁口部に開口する電磁弁取付
部５とを有し、前記弁本体１０の側面部に複数の環状パ
ッキン６でシールして、複数本のボルト７により図１
（ａ）の如く締着固定される。The communication passage forming member 4 has communication holes 2a 'and 2b' for connecting the open ends of the inlet passage 2a and the communication passage 2b as shown in FIG. 1B, and the inner end portion of the communication hole 2b '. The valve body 3 has a short tubular valve opening 3 and a solenoid valve mounting portion 5 that opens at the valve opening. The valve body 10 is sealed with a plurality of annular packings 6 on a side surface thereof to form a plurality of bolts. Figure 1 by 7
It is fastened and fixed as shown in (a).
【００１７】Ａは温度膨張弁Ｂの一次側通路２（前記弁
口３の部分）を開閉する電磁弁で、連通路形成部材４の
電磁弁取付部５にシール用の環状パッキン２７を介して
嵌合しフランジ挟着リング２８をカシメ部２９で図３の
如く固定することにより装着されるシリンダ筒３０（こ
のシリンダ筒は連通路形成部材４と一体の筒体で構成す
ることも可能である）と、前記弁口３に接離する弁部３
１を有し前記シリンダ筒３０内に開弁方向及び閉弁方向
に移動できるように挿入されたプランジャ３２と、シリ
ンダ筒３０の外側に配設される電磁コイル３３及びシリ
ンダ筒３０の端部に嵌着され前記コイル３３の通電励磁
による磁気吸引力でプランジャ３２を開弁方向に吸引移
動させる吸引子３４と、この吸引子３４とプランジャ３
２との間に組込まれ前記コイル３３の消磁時にプランジ
ャ３２を閉弁方向に弾発移動させるプランジャ付勢ばね
３５とを具備し、前記吸引子３４のプランジャ対向端凹
部にはプランジャ３２が吸引子３４に吸着された時の衝
接金属音を防止するスペーサ３６が嵌合保持されてい
る。Reference numeral A is a solenoid valve for opening and closing the primary passage 2 (portion of the valve opening 3) of the temperature expansion valve B, which is attached to the solenoid valve mounting portion 5 of the communication passage forming member 4 via an annular packing 27 for sealing. A cylinder cylinder 30 mounted by fitting and fixing the flange clamping ring 28 with a caulking portion 29 as shown in FIG. 3 (this cylinder cylinder can also be configured as a cylinder body integral with the communication passage forming member 4). ) And the valve portion 3 that comes into contact with or separates from the valve opening 3
1 has a plunger 32 inserted into the cylinder cylinder 30 so as to be movable in the valve opening direction and the valve closing direction, and an electromagnetic coil 33 disposed outside the cylinder cylinder 30 and an end portion of the cylinder cylinder 30. A suction element 34 that is fitted and moves the plunger 32 in the valve opening direction by a magnetic attraction force generated by energization of the coil 33, and the suction element 34 and the plunger 3.
2 and a plunger urging spring 35 for elastically moving the plunger 32 in the valve closing direction when the coil 33 is demagnetized, and the plunger 32 is provided in a concave portion of the suction element 34 facing the plunger. A spacer 36 is fitted and held to prevent an impact metal sound when it is adsorbed by the 34.
【００１８】前記ばね３５はプランジャ３２の吸引子対
向端側の有底孔に嵌装され、該孔底部とスペーサ３６と
に両端が支持される圧縮スプリングであって、該ばね３
５が内装されるプランジャ３２の有底孔には、プランジ
ャ外周部から穿設した均圧孔３７が図１（ａ）及び図４
（ｂ）の如く開設されている。The spring 35 is a compression spring which is fitted in a bottomed hole on the side of the plunger 32 facing the suction element and whose both ends are supported by the hole bottom and the spacer 36.
In the bottomed hole of the plunger 32 in which 5 is installed, a pressure equalizing hole 37 formed from the outer peripheral portion of the plunger is shown in FIGS.
It is opened as shown in (b).
【００１９】前記プランジャ３２の弁部側外周部には、
シリンダ筒３０の内周面を摺動可能な環状のシールパッ
キン３８がアウターブッシュ３９の圧入固定により図４
の如く取付けられている。このシールパッキン３８に
は、流体流通の絞り作用をなす図４（ｂ）に示すような
切欠溝３８ａが形成され、前記プランジャ３２と吸引子
３４間の前記パッキン３８で仕切られた空間をプランジ
ャ動作を緩やかにさせるダンパー室４０として形成して
いる。On the outer peripheral portion of the plunger 32 on the valve side,
An annular seal packing 38 that is slidable on the inner peripheral surface of the cylinder 30 is fixed by press-fitting an outer bush 39, as shown in FIG.
It is installed as shown. This seal packing 38 is formed with a cutout groove 38a as shown in FIG. 4 (b) which acts as a throttling action of the fluid flow, and the space partitioned by the packing 38 between the plunger 32 and the suction element 34 is operated by the plunger. It is formed as a damper chamber 40 that gently loosens.
【００２０】なお、前記シールパッキン３８のプランジ
ャ３２に対する取付形状は、開弁時にダンパー室４０か
ら背圧を受けることができるプランジャ吸引方向に湾曲
拡開した逆傘型の形状とされている。また、前記シール
パッキン３８の切欠溝３８ａはＶ形状とされ、そのスリ
ット角度が２０〜６０度の範囲に設定されている。The seal packing 38 is attached to the plunger 32 in the shape of an inverted umbrella which is curved and expanded in the plunger suction direction so as to receive back pressure from the damper chamber 40 when the valve is opened. Further, the notch groove 38a of the seal packing 38 is V-shaped, and the slit angle thereof is set in the range of 20 to 60 degrees.
【００２１】前記シールパッキン３８は、シリンダ筒３
０の内周面をできるだけ小さな摺動抵抗で移動でき、且
つシリンダ筒３０とのシール性が良い高分子材料、たと
えばテフロン等で構成される。また、アウターブッシュ
３９は組立性や加工性に優れる真鍮等で構成される。The seal packing 38 is the cylinder tube 3
It is composed of a polymer material, such as Teflon, which can move the inner peripheral surface of 0 with a sliding resistance as small as possible and has a good sealing property with the cylinder 30. The outer bush 39 is made of brass or the like, which is excellent in assemblability and workability.
【００２２】而して、前記シールパッキン３８のプラン
ジャ３２に対する取付形状を前記のような逆傘型の形状
にすると、電磁弁Ａの開弁時にダンパー室４０からの圧
力がシールパッキン３８に加わり、該パッキンがシリン
ダ筒３０の内周面に背圧受圧作用で良好に密着し、切欠
溝３８ａ以外のパッキン摺動部分からの圧力（背圧）洩
れを防いで、電磁コイル３３の通電励磁によるプランジ
ャ３２の開弁動作を安定して緩やかに行うことができ、
また閉弁時には一次側通路２からの冷媒圧力がシールパ
ッキン３８に加わり、該パッキンの摺動抵抗が最小とな
り、プランジャ付勢ばね３５によるプランジャ３２の緩
やかで円滑な閉弁動作を確保することができ、このよう
なダンパー室４０への圧力流出入のコントロールにより
液ハンマー音を低減し、異常振動騒音の発生を効果的に
防止することができる。When the seal packing 38 is attached to the plunger 32 in the shape of an inverted umbrella as described above, the pressure from the damper chamber 40 is applied to the seal packing 38 when the solenoid valve A is opened. The packing closely adheres to the inner peripheral surface of the cylinder cylinder 30 by the back pressure receiving action, prevents pressure (back pressure) leakage from the sliding parts of the packing other than the notch groove 38a, and energizes the electromagnetic coil 33 to energize the plunger. The valve opening operation of 32 can be performed stably and gently,
Further, when the valve is closed, the refrigerant pressure from the primary passage 2 is applied to the seal packing 38, the sliding resistance of the packing is minimized, and a gentle and smooth valve closing operation of the plunger 32 by the plunger urging spring 35 can be secured. By controlling the flow of pressure into and out of the damper chamber 40, the liquid hammer noise can be reduced and the generation of abnormal vibration noise can be effectively prevented.
【００２３】図５及び図６は、本発明の第２の実施例を
示す。この第２の実施例は、温度膨張弁Ｂの弁本体１０
に高圧液冷媒の入口通路２ａと連絡路２ｂが図６の如く
開口するねじ穴２４を設け、この本体ねじ穴２４に螺合
する雄ねじ部４ａ及び前記ねじ穴２４の内端面２４ａに
エッジ接触するエッジシール部２５を有した連通路形成
部材４を弁本体１０のねじ穴２４に図５の如く螺挿固定
して、温度膨張弁Ｂに電磁弁Ａを取付けるように構成し
た点が前記第１実施例と相違している。5 and 6 show a second embodiment of the present invention. In this second embodiment, the valve body 10 of the temperature expansion valve B is
6 is provided with a screw hole 24 in which the inlet passage 2a for the high-pressure liquid refrigerant and the communication passage 2b are opened as shown in FIG. 6, and the male screw portion 4a screwed into the main body screw hole 24 and the inner end surface 24a of the screw hole 24 are in edge contact with each other. The communication passage forming member 4 having the edge seal portion 25 is screwed and fixed in the screw hole 24 of the valve body 10 as shown in FIG. 5, and the electromagnetic valve A is attached to the temperature expansion valve B. This is different from the embodiment.
【００２４】その他の構成（温度膨張弁Ｂと電磁弁Ａ及
び連通路形成部材４の構成）は、図１乃至図４に示す第
１実施例のものと略同様であるから、同一部分に同符号
を付して詳細な構成説明は省略する。The other structure (the structure of the temperature expansion valve B, the solenoid valve A and the communication passage forming member 4) is substantially the same as that of the first embodiment shown in FIGS. Reference numerals are given and detailed configuration description is omitted.
【００２５】[0025]
【発明の効果】本発明の電磁弁付膨張弁は、温度膨張弁
Ｂの高圧液冷媒が流入する一次側通路２を、入口通路２
ａと連絡路２ｂからなり、この入口通路２ａと連絡路２
ｂの通路連通部に弁口３を設けた構成とし、この温度膨
張弁Ｂに前記弁口３に接離し高圧の一次側通路２を開閉
する電磁弁Ａを付設し又は取付けたものであるから、電
磁弁Ａと温度膨張弁Ｂとの間の通路を短縮し且つ該通路
の内容積を減らして、電磁弁Ａを開いた時の高圧液冷媒
の膨張及び加速流れを抑制し、冷媒液ハンマー音の発生
を防止することができると共に、前記連絡路２ｂにより
温度膨張弁Ｂへの圧力損失を低減し、温度膨張弁Ｂへ常
に適正な液冷媒を送って、冷房効率を一段と向上させる
ことができる。According to the expansion valve with a solenoid valve of the present invention, the primary side passage 2 into which the high pressure liquid refrigerant of the temperature expansion valve B flows is connected to the inlet passage 2.
a and a connecting path 2b, and this entrance passage 2a and connecting path 2
Since the valve opening 3 is provided in the passage communicating portion of b, the temperature expansion valve B is provided with or attached with the solenoid valve A which is in contact with or separated from the valve opening 3 to open or close the high pressure primary side passage 2. , The passage between the solenoid valve A and the temperature expansion valve B is shortened and the internal volume of the passage is reduced to suppress the expansion and accelerated flow of the high pressure liquid refrigerant when the solenoid valve A is opened. It is possible to prevent the generation of sound, reduce the pressure loss to the temperature expansion valve B by the communication path 2b, and always send an appropriate liquid refrigerant to the temperature expansion valve B to further improve the cooling efficiency. it can.
【００２６】また、温度膨張弁Ｂの連通路形成部材４に
前記弁口部３に開口する電磁弁取付部５を設け、この電
磁弁取付部５に装着される電磁弁Ａを請求項３で特定す
る構成とした場合には、シールパッキン３８の切欠溝３
８ａによるダンパー作用でプランジャ３２の開弁スピー
ドを緩やかにして、前記のような液ハンマー音を効果的
に防止することができる。Further, the solenoid valve mounting portion 5 opening to the valve opening 3 is provided in the communication passage forming member 4 of the temperature expansion valve B, and the solenoid valve A mounted on the solenoid valve mounting portion 5 is claimed in claim 3. If the configuration is specified, the cutout groove 3 of the seal packing 38
The damper action by 8a can slow the valve opening speed of the plunger 32 and effectively prevent the liquid hammer noise as described above.
【図１】本発明の第１実施例による電磁弁付膨張弁の構
成説明図であって、同図（ａ）は中央縦断面図、同図
（ｂ）は同図（ａ）のＦ―Ｆ′線に沿う横断面図。FIG. 1 is a structural explanatory view of an expansion valve with a solenoid valve according to a first embodiment of the present invention, in which FIG. 1 (a) is a central longitudinal sectional view and FIG. 1 (b) is F- of FIG. 1 (a). The cross-sectional view taken along the line F '.
【図２】図１（ａ）のＧ―Ｇ′線に沿う縦断面図。FIG. 2 is a vertical sectional view taken along the line GG ′ of FIG.
【図３】図１（ｂ）を弁本体と電磁弁に分解して示した
拡大断面図。FIG. 3 is an enlarged cross-sectional view showing the valve body and the solenoid valve of FIG. 1 (b) in an exploded manner.
【図４】温度膨張弁に取付けられる電磁弁の要部説明図
であって、同図（ａ）は電磁弁取付部分を拡大して示し
た要部断面図、同図（ｂ）はプランジャとシールパッキ
ンの構成及び該パッキンの取付方法を説明するための斜
視図。4A and 4B are explanatory views of a main part of a solenoid valve attached to a temperature expansion valve, in which FIG. 4A is a cross-sectional view of the main part showing an enlarged solenoid valve mounting part, and FIG. 4B shows a plunger. The perspective view for explaining the composition of a seal packing, and the attachment method of the packing.
【図５】本発明の第２実施例による電磁弁付膨張弁の構
成説明図であって、同図（ａ）は中央縦断面図、同図
（ｂ）は同図（ａ）のＨ―Ｈ′線に沿う横断面図。5A and 5B are configuration explanatory views of an expansion valve with a solenoid valve according to a second embodiment of the present invention, in which FIG. 5A is a central longitudinal sectional view and FIG. 5B is H- in FIG. 5A. FIG.
【図６】図５（ｂ）を弁本体と電磁弁に分解して示した
拡大断面図。FIG. 6 is an enlarged cross-sectional view showing the valve body and the solenoid valve of FIG. 5 (b) in an exploded manner.
【図７】車両用空調装置に用いられる従来の冷凍システ
ムの回路説明図。FIG. 7 is a circuit explanatory diagram of a conventional refrigeration system used in a vehicle air conditioner.
Ｂ…温度膨張弁、 １…弁室、２…一次側通路、２ａ…
入口通路、２ｂ…連絡路、 ３…弁口、 ４…連通路形
成部材、５…電磁弁取付部、８…二次側通路、Ｃ…凝縮
器、 Ｅ…蒸発器、 Ｐ…圧縮機、９…気相冷媒通路、
１０…弁本体、１１…ダイヤフラム、 １２…感温・圧
力伝達部材、 １３…弁体、１４…パワーエレメント
部、 ２２…弁座部、２４…本体ねじ穴、２５…エッジ
シール部、Ａ…電磁弁、３０…シリンダ筒、３１…弁
部、３２…プランジャ、３３…電磁コイル、 ３４…吸
引子、 ３５…プランジャ付勢ばね、３８…シールパッ
キン、３８ａ…切欠溝、３９…アウターブッシュ、４０
…ダンパー室。B ... Temperature expansion valve, 1 ... Valve chamber, 2 ... Primary side passage, 2a ...
Inlet passage, 2b ... Communication passage, 3 ... Valve opening, 4 ... Communication passage forming member, 5 ... Electromagnetic valve mounting portion, 8 ... Secondary passage, C ... Condenser, E ... Evaporator, P ... Compressor, 9 ... Gas phase refrigerant passage,
10 ... Valve body, 11 ... Diaphragm, 12 ... Temperature sensitive / pressure transmitting member, 13 ... Valve body, 14 ... Power element part, 22 ... Valve seat part, 24 ... Main body screw hole, 25 ... Edge seal part, A ... Electromagnetic Valve, 30 ... Cylinder cylinder, 31 ... Valve part, 32 ... Plunger, 33 ... Electromagnetic coil, 34 ... Suction element, 35 ... Plunger bias spring, 38 ... Seal packing, 38a ... Notch groove, 39 ... Outer bush, 40
… Damper room.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ２５Ｂ 41/06 Ｋ (72)発明者 渡辺 和彦 東京都世田谷区等々力７丁目17番24号 株 式会社不二工機製作所内 (72)発明者 今井 正幸 東京都世田谷区等々力７丁目17番24号 株 式会社不二工機製作所内─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification number Internal reference number FI Technical indication location F25B 41/06 K (72) Inventor Kazuhiko Watanabe 7-17-24 Todoroki, Setagaya-ku, Tokyo Company Fuji Koki Mfg. Co., Ltd. (72) Inventor Masayuki Imai 7-1724 Todoroki, Setagaya-ku, Tokyo Inside Fuji Koki Mfg. Co., Ltd.
Claims (3)
通路と、前記弁室に連通し減圧された低圧の液冷媒が流
出する二次側通路と、蒸発器から圧縮機に向かう気相冷
媒が通過する気相冷媒通路とを有する弁本体に、ダイヤ
フラムで作動される感温・圧力伝達部材と弁体を組込ん
だ前記ダイヤフラムの下部空間が前記気相冷媒通路と連
通している温度膨張弁を備え、この温度膨張弁の高圧液
冷媒が流入する一次側通路を、入口通路と連絡路からな
り、この入口通路と連絡路の通路連通部に弁口を設けた
構成とし、この温度膨張弁の前記通路連通部に前記弁口
に接離し前記一次側通路を開閉する電磁弁を付設したこ
とを特徴とする電磁弁付膨張弁。1. A primary-side passage through which a high-pressure liquid refrigerant flows into a valve chamber, a secondary-side passage that communicates with the valve chamber and through which a depressurized low-pressure liquid refrigerant flows out, and a gas flowing from an evaporator toward a compressor. A valve body having a gas-phase refrigerant passage through which a phase-phase refrigerant passes, a lower space of the diaphragm in which a temperature-sensing / pressure transmitting member operated by a diaphragm and a valve body are incorporated is in communication with the gas-phase refrigerant passage. A temperature expansion valve is provided, the primary side passage of the high-pressure liquid refrigerant of the temperature expansion valve is composed of an inlet passage and a communication passage, and a valve opening is provided in a passage communication portion of the inlet passage and the communication passage. An expansion valve with a solenoid valve, characterized in that a solenoid valve is provided in the passage communicating portion of the temperature expansion valve to open and close the primary passage by contacting and separating from the valve port.
通路と、前記弁室に連通し減圧された低圧の液冷媒が流
出する二次側通路と、蒸発器から圧縮機に向かう気相冷
媒が通過する気相冷媒通路とを有する弁本体に、ダイヤ
フラムで作動される感温・圧力伝達部材と弁体を組込ん
だ前記ダイヤフラムの下部空間が前記気相冷媒通路と連
通している温度膨張弁を備え、この温度膨張弁の高圧液
冷媒が流入する一次側通路を、入口通路と連絡路からな
り、この入口通路と連絡路の通路連通部に弁口を設けた
構成とし、この温度膨張弁の弁本体に取付けられる連通
路形成部材に前記弁口部に開口する電磁弁取付部を設
け、この連通路形成部材の電磁弁取付部に前記弁口に接
離し前記一次側通路を開閉する電磁弁を取付けたことを
特徴とする電磁弁付膨張弁。2. A primary-side passage through which a high-pressure liquid refrigerant flows into a valve chamber, a secondary-side passage that communicates with the valve chamber and through which a depressurized low-pressure liquid refrigerant flows out, and a gas flowing from an evaporator toward a compressor. A valve body having a gas-phase refrigerant passage through which a phase-phase refrigerant passes, a lower space of the diaphragm in which a temperature-sensing / pressure transmitting member operated by a diaphragm and a valve body are incorporated is in communication with the gas-phase refrigerant passage. A temperature expansion valve is provided, the primary side passage of the high-pressure liquid refrigerant of the temperature expansion valve is composed of an inlet passage and a communication passage, and a valve opening is provided in a passage communication portion of the inlet passage and the communication passage. The communication passage forming member attached to the valve body of the temperature expansion valve is provided with a solenoid valve mounting portion that opens to the valve opening portion, and the solenoid valve mounting portion of the communication passage forming member is connected to and separated from the valve opening to form the primary passage. Expansion valve with solenoid valve, which is equipped with a solenoid valve that opens and closes Zhang valve.
付部に装着されるシリンダ筒と、前記弁口に接離する弁
部を有し前記シリンダ筒内に開弁方向及び閉弁方向に移
動できるように挿入されたプランジャと、前記シリンダ
筒の外側に配設される電磁コイル及び前記シリンダ筒の
端部に嵌着され前記コイルの通電励磁による磁気吸引力
で前記プランジャを開弁方向に吸引移動させる吸引子
と、この吸引子と前記プランジャとの間に組込まれ前記
コイルの消磁時に前記プランジャを閉弁方向に弾発移動
させるプランジャ付勢ばねとを具備し、前記プランジャ
に前記シリンダ筒の内周面を摺動可能なシールパッキン
を取付け、このシールパッキンに流体流通の絞り作用を
なす切欠溝を形成して、前記プランジャと吸引子間の前
記パッキンで仕切られる空間をプランジャ動作を緩やか
にさせるダンパー室とした構成とされていることを特徴
とする請求項２に記載の電磁弁付膨張弁。3. A cylinder cylinder, in which the solenoid valve is mounted on a solenoid valve mounting portion of a communication passage forming member, and a valve portion, which comes into contact with and separates from the valve port, and a valve opening direction and a valve closing direction in the cylinder cylinder. A plunger inserted so as to be movable to an electromagnetic coil, an electromagnetic coil disposed on the outside of the cylinder cylinder, and a magnetic attraction force that is fitted to the end of the cylinder cylinder and is excited by energization of the coil to open the plunger in the valve opening direction. And a plunger urging spring that is installed between the attractor and the plunger to elastically move the plunger in the valve closing direction when the coil is demagnetized. A seal packing slidable on the inner peripheral surface of the cylinder is attached, and a notch groove is formed in the seal packing, which acts as a throttle for fluid flow, and is partitioned by the packing between the plunger and the suction element. The expansion valve with a solenoid valve according to claim 2, wherein the space that is formed is a damper chamber that makes the plunger operation gentle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01709395A JP3362990B2 (en) | 1995-02-03 | 1995-02-03 | Expansion valve with solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01709395A JP3362990B2 (en) | 1995-02-03 | 1995-02-03 | Expansion valve with solenoid valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08210733A true JPH08210733A (en) | 1996-08-20 |
| JP3362990B2 JP3362990B2 (en) | 2003-01-07 |
Family
ID=11934385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01709395A Expired - Fee Related JP3362990B2 (en) | 1995-02-03 | 1995-02-03 | Expansion valve with solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3362990B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0874202A1 (en) * | 1997-04-22 | 1998-10-28 | Denso Corporation | Expansion valve integrated with electromagnetic valve and refrigeration cycle employing the same |
| EP0907057A1 (en) * | 1997-10-03 | 1999-04-07 | Eaton Corporation | Thermostatic expansion valve with integral electrically operated inlet valve |
| EP0924482A3 (en) * | 1997-12-22 | 1999-09-15 | Denso Corporation | Expansion valve integrated with electromagnetic valve |
| JP2005178755A (en) * | 2003-12-16 | 2005-07-07 | Otto Egelhof Gmbh & Co Kg | Shut-off valve, kit with shut-off valve, and expansion valve |
| DE102004049790B4 (en) * | 2003-12-16 | 2007-05-16 | Otto Egelhof Gmbh & Co Kg | Shut-off valve, kit with a shut-off valve, and an expansion valve |
| US7758020B2 (en) | 2004-03-12 | 2010-07-20 | Toyota Jidosha Kabushiki Kaisha | Valve |
| JP2012215309A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Electric Corp | Cooling device, and refrigerating cycle apparatus |
| CN111412593A (en) * | 2020-03-09 | 2020-07-14 | 珠海格力电器股份有限公司 | Liquid impact prevention control method and device for air conditioner, storage medium and air conditioner |
-
1995
- 1995-02-03 JP JP01709395A patent/JP3362990B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0874202A1 (en) * | 1997-04-22 | 1998-10-28 | Denso Corporation | Expansion valve integrated with electromagnetic valve and refrigeration cycle employing the same |
| EP0907057A1 (en) * | 1997-10-03 | 1999-04-07 | Eaton Corporation | Thermostatic expansion valve with integral electrically operated inlet valve |
| US5979780A (en) * | 1997-10-03 | 1999-11-09 | Eaton Corporation | Thermostatic expansion valve with integral electrically operated inlet valve |
| CN1113178C (en) * | 1997-10-03 | 2003-07-02 | 易通公司 | Thermostatic expansion valve with integral electrically operated inlet valve |
| KR100415354B1 (en) * | 1997-10-03 | 2004-05-10 | 파커-한니핀 코포레이션 | Thermostatic expansion valve integrated with electrically operated inlet valve |
| EP0924482A3 (en) * | 1997-12-22 | 1999-09-15 | Denso Corporation | Expansion valve integrated with electromagnetic valve |
| JP2005178755A (en) * | 2003-12-16 | 2005-07-07 | Otto Egelhof Gmbh & Co Kg | Shut-off valve, kit with shut-off valve, and expansion valve |
| DE102004049790B4 (en) * | 2003-12-16 | 2007-05-16 | Otto Egelhof Gmbh & Co Kg | Shut-off valve, kit with a shut-off valve, and an expansion valve |
| US7246501B2 (en) | 2003-12-16 | 2007-07-24 | Otto Egelhof Gmbh & Co. Kg | Shut-off valve, kit having a shut-off valve, and an expansion valve |
| JP4693403B2 (en) * | 2003-12-16 | 2011-06-01 | オットー・エゲルホフ・ゲーエムベーハー・ウント・コンパニ・カーゲー | Shut-off valve, kit having shut-off valve, and expansion valve |
| US7758020B2 (en) | 2004-03-12 | 2010-07-20 | Toyota Jidosha Kabushiki Kaisha | Valve |
| JP2012215309A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Electric Corp | Cooling device, and refrigerating cycle apparatus |
| CN111412593A (en) * | 2020-03-09 | 2020-07-14 | 珠海格力电器股份有限公司 | Liquid impact prevention control method and device for air conditioner, storage medium and air conditioner |
| CN111412593B (en) * | 2020-03-09 | 2021-07-27 | 珠海格力电器股份有限公司 | Liquid impact prevention control method and device for air conditioner, storage medium and air conditioner |
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| Publication number | Publication date |
|---|---|
| JP3362990B2 (en) | 2003-01-07 |
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