JPH08296927A - Combination valve and refrigerating cycle using the combination valve - Google Patents

Combination valve and refrigerating cycle using the combination valve

Info

Publication number
JPH08296927A
JPH08296927A JP7123125A JP12312595A JPH08296927A JP H08296927 A JPH08296927 A JP H08296927A JP 7123125 A JP7123125 A JP 7123125A JP 12312595 A JP12312595 A JP 12312595A JP H08296927 A JPH08296927 A JP H08296927A
Authority
JP
Japan
Prior art keywords
valve
stopper
fluid
pipe
passage
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
Application number
JP7123125A
Other languages
Japanese (ja)
Inventor
Mitsuo Matsuda
光雄 松田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP7123125A priority Critical patent/JPH08296927A/en
Publication of JPH08296927A publication Critical patent/JPH08296927A/en
Pending legal-status Critical Current

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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/38—Expansion means; Dispositions thereof specially adapted for reversible cycles, e.g. bidirectional expansion restrictors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Valves (AREA)
  • Multiple-Way Valves (AREA)

Abstract

PURPOSE: To obtain a combination valve which can give different flow resistances in the direction of flow of a fluid and also can prevent noise and a refrigerating cycle using the combination valve. CONSTITUTION: An inside passage 43 and an outside passage 45 which has a large resistance are formed for a stopper valve 37 fixed in a pipe and the inside passage is closed up by seating a valve element 39. In this construction, the inside passage 43 is opened in the case when a fluid flows in one direction in the pipe, while the inside passage 43 is closed and the fluid is made to flow through the outside passage 45 when the fluid flows in the other direction. Since only the light valve element 39 moves in relation to a change in the direction of flow in this construction, a sound is scarcely generated and noise can be prevented. Since the construction is simple and a resistance is easy to change, moreover, the design and modification of a system for giving the resistance to the fluid are facilitated.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、流体が流れる管内に設
けられ、流体に対する抵抗の少ない流れと、流体の流れ
抵抗の大きい流れとを生じさせる複合弁及びこの複合弁
を用いた冷凍サイクルに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite valve provided in a pipe through which a fluid flows, which produces a flow having a low resistance to the fluid and a flow having a high flow resistance to the fluid, and a refrigeration cycle using the composite valve. It is a thing.

【０００２】[0002]

【従来の技術】管内を流れる流体に異なる抵抗を付与す
る場合として、例えば、ヒートポンプ式の空気調和装置
等に用いられる冷媒回路がある。この種の冷媒回路で
は、一般に、圧縮機、利用側熱交換器、キャピラリチュ
ーブ、熱源側熱交換器、四方弁から構成されていて、暖
房運転時には、この順序で冷媒が循環されて利用側熱交
換器が凝縮機として作用し、冷房運転時には、暖房運転
時とは逆方向に冷媒が循環されて、利用側熱交換器が蒸
発器として作用する。このような冷媒の流れ方向の切り
換えにより、１つの冷媒回路により暖房運転と冷房運転
とをおこなうようになっている。尚、キャピラリチュー
ブは冷媒に所定の抵抗を付与して蒸発器で冷媒を減圧さ
せるものである。2. Description of the Related Art As a case of imparting different resistances to fluids flowing in a pipe, for example, there is a refrigerant circuit used in a heat pump type air conditioner. This type of refrigerant circuit is generally composed of a compressor, a heat exchanger on the use side, a capillary tube, a heat exchanger on the heat source side, and a four-way valve. The exchanger acts as a condenser, and during the cooling operation, the refrigerant is circulated in the opposite direction to that during the heating operation, and the use-side heat exchanger acts as an evaporator. By switching the flow direction of the refrigerant in this way, heating operation and cooling operation are performed by one refrigerant circuit. The capillary tube gives a predetermined resistance to the refrigerant and depressurizes the refrigerant in the evaporator.

【０００３】しかし、キャピラリチューブの抵抗は一定
であるため、通常は周囲温度が高い冷房運転時において
も吐出冷媒の圧力は非常に高く、温度も高温であるが、
周囲温度が低い暖房運転時には圧縮機の吐出圧力はそれ
ほど高くならない。このため冷媒回路にキャピラリチュ
ーブを設けたのみでは、冷房運転時には充分な能力が得
られても、暖房時に充分な暖房能力を得ることができな
い。However, since the resistance of the capillary tube is constant, the pressure of the discharged refrigerant is usually very high and the temperature is high even during the cooling operation in which the ambient temperature is high.
The discharge pressure of the compressor does not become so high during heating operation when the ambient temperature is low. Therefore, only by providing the capillary tube in the refrigerant circuit, it is not possible to obtain sufficient heating capacity during heating even if sufficient capacity is obtained during cooling operation.

【０００４】これに対して、実公昭５１ー１６５１９号
公報には、冷媒回路に配置されたキャピラリに対して直
列に抵抗弁（複合弁）を設ける構成が開示されている。
この抵抗弁は、管に弁座を形成し、弁座に対して中央に
毛細管を有した可動弁体を移動させ、冷房時には可動弁
体を着座させて所定の抵抗を付与し、暖房運転のときに
は弁座から離して流通抵抗を小さくしたものである。On the other hand, Japanese Utility Model Publication No. 51-16519 discloses a structure in which a resistance valve (composite valve) is provided in series with a capillary arranged in a refrigerant circuit.
This resistance valve forms a valve seat in a pipe, moves a movable valve body having a capillary tube in the center with respect to the valve seat, and at the time of cooling, the movable valve body is seated to give a predetermined resistance, thereby performing a heating operation. It is sometimes separated from the valve seat to reduce the flow resistance.

【０００５】[0005]

【発明が解決しようとする課題】しかし、このような従
来の可動弁体を設けた構成によれば、冷房時のみなら
ず、暖房時にも充分な能力を得られるものの、重量の重
い可動弁体が移動しあるいは着座する度に音が発生し、
騒音の原因になるという問題点がある。However, according to the structure provided with such a conventional movable valve element, although the sufficient ability can be obtained not only during cooling but also during heating, the movable valve element is heavy. A sound is generated each time the person moves or sits down,
There is a problem that it causes noise.

【０００６】本発明は、流体の流れ方向に対して異なる
流通抵抗を付与することができるとともに騒音を防止で
きる複合弁及びこの複合弁を用いた冷凍サイクルを提供
することを目的とする。It is an object of the present invention to provide a composite valve that can impart different flow resistances to the flow direction of a fluid and can prevent noise, and a refrigeration cycle using this composite valve.

【０００７】[0007]

【課題を解決するための手段】請求項１に記載の発明
は、管内に固定されて管内を仕切るストッパバルブと、
このストッパバルブに対して移動可能に設けられた弁体
とを備え、前記ストッパバルブの内側には流体が流通す
る内側流路が形成され、前記ストッパバルブの外周には
前記管内を連通して前記内側流路より抵抗の大きい外側
流路が形成され、前記弁体が前記ストッパバルブに着座
した場合に前記内側流路を閉じて外側流路のみに流体が
通過するのを許容し、前記弁体が前記ストッパバルブか
ら離れた場合に前記内側流路を開いてその流体の流れを
許容するものである。According to a first aspect of the present invention, there is provided a stopper valve fixed in the pipe to partition the pipe,
A valve body movably provided with respect to the stopper valve, wherein an inner flow path through which a fluid flows is formed inside the stopper valve, and an outer periphery of the stopper valve communicates with the inside of the pipe. An outer flow passage having a resistance larger than that of the inner flow passage is formed, and when the valve body is seated on the stopper valve, the inner flow passage is closed to allow the fluid to pass only through the outer flow passage, Is to allow the fluid flow by opening the inner flow path when it is separated from the stopper valve.

【０００８】請求項２に記載の発明は、請求項１に記載
の複合弁において、前記外側流路を螺旋状の溝としたも
のである。According to a second aspect of the present invention, in the composite valve according to the first aspect, the outer flow path is a spiral groove.

【０００９】請求項３に記載の発明は、請求項１に記載
の複合弁において、前記外側流路を流体の流れに沿って
直線状に形成したものである。According to a third aspect of the present invention, in the composite valve according to the first aspect, the outer flow passage is linearly formed along the flow of the fluid.

【００１０】請求項４に記載の発明は、圧縮機、四方切
換弁、利用側熱交換器、減圧装置、熱源側熱交換器を管
を接続して、四方切換弁の切換えで利用側熱交換器によ
る冷暖房運転を可能にした冷凍サイクルにおいて、前記
減圧装置と前記利用側熱交換器との間に複合弁を備え、
この複合弁は管内に固定されて管内を仕切るストッパバ
ルブと、このストッパバルブに対して移動可能に設けら
れた弁体とを備え、前記ストッパバルブの内側には流体
が流通する内側流路が形成され、前記ストッパバルブの
外周には前記管内を連通して前記内側流路より抵抗の大
きい外側流路が形成され、前記弁体が前記ストッパバル
ブに着座した場合に前記内側流路を閉じて外側流路のみ
に流体が通過するのを許容し、前記弁体が前記ストッパ
バルブから離れた場合に前記内側流路を開いてその流体
の流れを許容するものである。According to a fourth aspect of the invention, a compressor, a four-way switching valve, a use side heat exchanger, a pressure reducing device, and a heat source side heat exchanger are connected in a pipe, and the use side heat exchange is performed by switching the four way switching valve. In a refrigerating cycle that enables cooling and heating operation by an air conditioner, a compound valve is provided between the pressure reducing device and the use side heat exchanger,
This composite valve includes a stopper valve fixed inside the pipe to partition the inside of the pipe, and a valve body movably provided with respect to the stopper valve, and an inner flow passage through which a fluid flows is formed inside the stopper valve. And an outer flow passage having a higher resistance than the inner flow passage is formed on the outer circumference of the stopper valve so as to communicate with the inside of the pipe, and when the valve body is seated on the stopper valve, the inner flow passage is closed and the outer flow passage is closed. The fluid is allowed to pass only through the flow passage, and when the valve body is separated from the stopper valve, the inner flow passage is opened to allow the flow of the fluid.

【００１１】[0011]

【作用】請求項１に記載の発明によれば、管内を流体が
一方向に流れる場合には、弁体がストッパバルブに対し
て離れた位置にあり、流体は流通抵抗の小さい内側流路
を通って流れる。一方、管内を流体が他方向に流体が流
れる場合には、弁体がストッパバルブに着座して内側流
路を閉じる。従って、流体は流通抵抗の大きい外側流路
を流れるので、流体の流れ方向に対して異なる流通抵抗
を付与することができる。しかも、重量の重いストッパ
バルブは管内に固定されており、流体の流れ方向が変わ
ってもストッパバルブは移動することがなく、弁体のみ
がストッパバルブに対して移動する構成であるから、音
の発生がほとんどなく、騒音を防止できる。According to the first aspect of the present invention, when the fluid flows in one direction in the pipe, the valve body is located away from the stopper valve, and the fluid flows through the inner flow passage having a small flow resistance. Flow through. On the other hand, when the fluid flows in the other direction in the pipe, the valve body sits on the stopper valve to close the inner flow passage. Therefore, since the fluid flows through the outer flow path having a large flow resistance, different flow resistances can be imparted to the flow direction of the fluid. Moreover, since the heavy stopper valve is fixed in the pipe, the stopper valve does not move even if the flow direction of the fluid changes, and only the valve element moves with respect to the stopper valve. There is almost no generation and noise can be prevented.

【００１２】また、請求項２に記載の発明によれば、外
側流路を螺旋状の溝としているので、抵抗値の調整が容
易にでき、且つ製造が容易である。Further, according to the second aspect of the invention, since the outer flow path is a spiral groove, the resistance value can be easily adjusted and the manufacturing is easy.

【００１３】請求項３に記載の発明によれば、外側流路
を直線状の溝形状としているので、このような形状にお
いても抵抗値の調整が容易にでき、且つ製造が容易であ
る。According to the third aspect of the present invention, since the outer flow path has a linear groove shape, the resistance value can be easily adjusted even in such a shape, and the manufacturing is easy.

【００１４】請求項４に記載の発明によれば、冷凍サイ
クルであって、冷房運転時と暖房運転時とで冷媒の流れ
方向を変えた場合に、その冷媒の流れ方向に応じて、流
通抵抗を変化させ、運転状態に応じた能力を確保でき
る。また、冷房運転と暖房運転時との切り換えの他、暖
房運転時における除霜運転の切り換え等においても、騒
音の発生を防止できる。According to the invention described in claim 4, in the refrigeration cycle, when the flow direction of the refrigerant is changed between the cooling operation and the heating operation, the flow resistance is changed according to the flow direction of the refrigerant. Can be changed to secure the ability according to the driving condition. In addition to the switching between the cooling operation and the heating operation, noise can be prevented from occurring when switching the defrosting operation during the heating operation.

【００１５】[0015]

【実施例】以下、添付図面を参照して本発明の一実施例
を詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

【００１６】図１乃至図４に、本実施例による複合弁の
構成を示すが、まず、図５を参照してその複合弁が用い
られている空気調和機の冷媒回路について説明する。1 to 4 show the structure of a composite valve according to this embodiment. First, a refrigerant circuit of an air conditioner in which the composite valve is used will be described with reference to FIG.

【００１７】図５に示す冷媒回路１において、圧縮機３
はマフラ５、四方弁７、室外熱交換器９、キャピラリチ
ューブ１１、二方弁（サービスバルブ）１５、室内熱交
換器１７、三方弁（サービスバルブ）１９、マフラ２
１、四方弁７の順序で冷媒管により接続されて冷媒回路
が構成されて、圧縮機３と四方弁７との間にはアキュム
レータ２７が配置されている。また、マフラ５及び四方
弁７の間と室外熱交換器９及びキャピラリ１１の間には
除霜運転時に高温冷媒の一部を室外熱交換器に流すため
の除霜回路２３が設けられており、その除霜回路２３は
電磁弁２５により開閉されるようになっている。In the refrigerant circuit 1 shown in FIG. 5, the compressor 3
Muffler 5, four-way valve 7, outdoor heat exchanger 9, capillary tube 11, two-way valve (service valve) 15, indoor heat exchanger 17, three-way valve (service valve) 19, muffler 2
1, a four-way valve 7 is connected in this order by a refrigerant pipe to form a refrigerant circuit, and an accumulator 27 is arranged between the compressor 3 and the four-way valve 7. Further, between the muffler 5 and the four-way valve 7 and between the outdoor heat exchanger 9 and the capillary 11, there is provided a defrosting circuit 23 for flowing a part of the high temperature refrigerant to the outdoor heat exchanger during the defrosting operation. The defrosting circuit 23 is opened and closed by a solenoid valve 25.

【００１８】キャピラリチューブ１１と二方弁１５との
間には、複合弁３１が配置されている。A composite valve 31 is arranged between the capillary tube 11 and the two-way valve 15.

【００１９】この複合弁３１は、キャピラリチューブ１
１との作用により、室外熱交換器９または室内熱交換器
１７が蒸発器として作用する場合に、冷媒に付与する抵
抗を変えるものである。This composite valve 31 is a capillary tube 1
When the outdoor heat exchanger 9 or the indoor heat exchanger 17 acts as an evaporator by the action with 1, the resistance applied to the refrigerant is changed.

【００２０】即ち、室外熱交換器９が蒸発器として作用
する場合には、冷媒にはキャピラリチューブ１１と複合
弁３１の抵抗３３とが付与され、室内熱交換器１７が蒸
発器として作用する場合には、キャピラリチューブ１１
のみの抵抗が付与される。従って室内熱交換器１７が蒸
発器として作用する場合にその手前で冷媒に付与する抵
抗を小さくしている。That is, when the outdoor heat exchanger 9 acts as an evaporator, the capillary tube 11 and the resistance 33 of the composite valve 31 are given to the refrigerant, and the indoor heat exchanger 17 acts as an evaporator. The capillary tube 11
Only resistance is given. Therefore, when the indoor heat exchanger 17 acts as an evaporator, the resistance given to the refrigerant in front of it is made small.

【００２１】複合弁３１は、図１に示すように、概略的
には、冷媒の他方向の流れ（室内暖房運転時）には抵抗
３３を付与し、一方向の流れ（室内冷房運転時）には一
方向弁３５を開き抵抗３３をバイパスするもので、具体
的には、ストッパバルブ３７と弁体３９とを備えてお
り、ストッパバルブ３７は、冷媒管４１内に固定されて
管内を冷媒の流れに対して仕切っている。As shown in FIG. 1, the compound valve 31 generally gives a resistance 33 to the flow of the refrigerant in the other direction (during indoor heating operation), and flows in one direction (during indoor cooling operation). The one-way valve 35 is opened to bypass the resistance 33. Specifically, the one-way valve 35 is provided with a stopper valve 37 and a valve body 39. The stopper valve 37 is fixed in a refrigerant pipe 41 and the inside of the refrigerant is cooled. It partitions against the flow of.

【００２２】このストッパバルブ３７にはその中央部に
冷媒管の長さ方向に沿って内側流路４３が形成されてい
る。内側通路４３は、冷媒管４１に対して十分広い口径
を有しており、ここを流れる冷媒（流体）にほとんど抵
抗を付与することがない。An inner passage 43 is formed in the stopper valve 37 at the center thereof along the length direction of the refrigerant pipe. The inner passage 43 has a sufficiently large diameter with respect to the refrigerant pipe 41, and hardly imparts resistance to the refrigerant (fluid) flowing therein.

【００２３】ストッパバルブ３７は、本実施例では、冷
媒管４１内に圧入されて固定されているが、冷媒管４１
内に固定されていればよく、溶接による固定やビードを
管に形成してストッパとする構成であってもよい。In this embodiment, the stopper valve 37 is press-fitted and fixed in the refrigerant pipe 41, but the refrigerant pipe 41 is
It suffices if it is fixed inside, and it may be fixed by welding or a structure in which a bead is formed on the tube to serve as a stopper.

【００２４】ストッパバルブの外周面には外側流路であ
る、ねじ溝４５が形成されている。このようにねじ溝４
５を形成することによって、ここを通過する流体は所定
の抵抗を受けることになる。抵抗値は、ねじ溝のピッ
チ、幅、深さ等により決定されるほか、ねじ溝４５の長
さであるストッパバルブ３７の長さＬによっても決定さ
れる。従って、簡単な構成で所定の抵抗を付与すること
ができ、要求される抵抗が変わった場合には、容易にそ
の値を変更できる。また、システムのコンパクト設計が
可能になる。A thread groove 45, which is an outer flow path, is formed on the outer peripheral surface of the stopper valve. In this way the thread groove 4
By forming 5, the fluid passing therethrough will experience a certain resistance. The resistance value is determined not only by the pitch, width, depth, etc. of the thread groove, but also by the length L of the stopper valve 37, which is the length of the thread groove 45. Therefore, it is possible to impart a predetermined resistance with a simple configuration, and when the required resistance changes, its value can be easily changed. It also enables a compact design of the system.

【００２５】ストッパバルブ３７の中央部には流体をほ
とんど抵抗なく流す内側流路４３が形成されている。こ
の内側流路４３に流体を流すことにより、簡単な構成で
抵抗を与えることなく流体を流すことができる。An inner flow passage 43 is formed at the center of the stopper valve 37 to allow the fluid to flow with almost no resistance. By allowing the fluid to flow through the inner flow path 43, it is possible to allow the fluid to flow without giving resistance with a simple configuration.

【００２６】弁体３９は、内側流路４３の開口４３ａを
開閉するものであり、図２に示す如く一方向に流体が流
れる場合には流体に押されてストッパバルブ３７に着座
して開口４３ａを閉じ、図１に示す如く他方向に流体が
流れる場合には、ストッパバルブ３７の内側流路４３を
通過して流れる流体に押されて移動して、開口４３ａを
開くものである。弁体３９は、図４に示すように、開口
４３ａを閉じるために、中央部３９ａがこの開口４３ａ
よりも広い面積を有しており、その外周部には四方に凸
部３９ｂが形成されており、凸部３９ｂ間の空間Ａを流
体が流れるようになっている。尚、弁体３９の形状は、
特に限定されるものでなく、中央部が開口４３ａを閉じ
る一方、外周部から流体が流れる構成であればよく、例
えば、図４に示すように、凸部３９ｂは４個に限らず、
図６に示すように３個形成されているものであってもよ
い。また、この凸部３９ｂは管内を移動する際に冷媒管
４１の内壁に摺動して移動を案内する。The valve body 39 opens and closes the opening 43a of the inner flow passage 43. When the fluid flows in one direction as shown in FIG. 2, the valve body 39 is pushed by the fluid and is seated on the stopper valve 37 to open the opening 43a. When the fluid flows in the other direction as shown in FIG. 1, the fluid is pushed by the fluid flowing through the inner passage 43 of the stopper valve 37 to move to open the opening 43a. As shown in FIG. 4, the valve body 39 has a central portion 39a in order to close the opening 43a.
It has a wider area than the above, and the convex portions 39b are formed on all sides of the outer peripheral portion so that the fluid flows through the space A between the convex portions 39b. The shape of the valve body 39 is
The configuration is not particularly limited as long as the central portion closes the opening 43a and the fluid flows from the outer peripheral portion. For example, as shown in FIG. 4, the number of convex portions 39b is not limited to four,
Three pieces may be formed as shown in FIG. Further, this convex portion 39b guides the movement by sliding on the inner wall of the refrigerant pipe 41 when moving inside the pipe.

【００２７】また、冷媒管４１には、図１に示すよう
に、弁体３９の移動を制限するビード４７が形成されて
いる。ストッパバルブ３７の端面である開口４３ａから
ビード４７までの距離Ｍは、管内径をＨよりも小さい寸
法に設定されており、弁体３９が倒れるのを防止してい
る。As shown in FIG. 1, the refrigerant pipe 41 is provided with a bead 47 for limiting the movement of the valve body 39. The distance M from the opening 43a, which is the end face of the stopper valve 37, to the bead 47 is set so that the inner diameter of the pipe is smaller than H, and the valve body 39 is prevented from falling.

【００２８】次に、上記実施例の作用を説明する。Next, the operation of the above embodiment will be described.

【００２９】冷房運転時には、図５に実線の矢印で示す
ように、圧縮機３、マフラ５、四方弁７、室外熱交換器
９、キャピラリチューブ１１、複合弁３１、二方弁１
５、室内熱交換器１７、三方弁１９、マフラ２１、四方
弁７、アキュムレータ２７の順序で冷媒が循環される。During the cooling operation, the compressor 3, the muffler 5, the four-way valve 7, the outdoor heat exchanger 9, the capillary tube 11, the composite valve 31, and the two-way valve 1 are indicated by the solid arrows in FIG.
The refrigerant is circulated in the order of 5, the indoor heat exchanger 17, the three-way valve 19, the muffler 21, the four-way valve 7, and the accumulator 27.

【００３０】この冷房運転の場合には、複合弁３１では
冷媒は一方向弁３５を通過し、抵抗３３を通過しないの
で、冷媒にはキャピラリチューブ１１のみの抵抗が付与
され、これにより冷媒が減圧される。従って、蒸発器と
して作用する室内熱交換器１７の能力は、キャピラリチ
ューブ１１により十分に得ることができる。In this cooling operation, in the combined valve 31, the refrigerant passes through the one-way valve 35 and does not pass through the resistance 33. Therefore, the resistance of only the capillary tube 11 is imparted to the refrigerant, whereby the refrigerant is depressurized. To be done. Therefore, the capacity of the indoor heat exchanger 17 acting as an evaporator can be sufficiently obtained by the capillary tube 11.

【００３１】この冷房運転時に複合弁３１では、図１に
示すように、冷媒はストッパバルブ３７の内側流路４３
を通り、更にストッパバルブ３７から離れた位置にある
弁体３９の外側空間Ａを通過して流れる。従って、複合
弁３１では冷媒に抵抗を付与することなく流れる。During this cooling operation, in the combined valve 31, the refrigerant flows through the inner passage 43 of the stopper valve 37 as shown in FIG.
And further passes through the outer space A of the valve body 39 located away from the stopper valve 37. Therefore, in the compound valve 31, the refrigerant flows without adding resistance.

【００３２】暖房運転時には、図５の破線矢印で示すよ
うに、四方弁７が切り換わって位置し、圧縮機３、マフ
ラ５、四方弁７、マフラ２１、三方弁１９、室内熱交換
器１７、二方弁１５、複合弁３１、キャピラリチューブ
１１、室外熱交換器９、四方弁７、アキュムレータ２７
の順序で冷媒が循環される。During the heating operation, the four-way valve 7 is switched and positioned as shown by the broken line arrow in FIG. 5, and the compressor 3, the muffler 5, the four-way valve 7, the muffler 21, the three-way valve 19 and the indoor heat exchanger 17 are placed. , Two-way valve 15, compound valve 31, capillary tube 11, outdoor heat exchanger 9, four-way valve 7, accumulator 27
The refrigerant is circulated in this order.

【００３３】この暖房運転の場合には、複合弁３１では
抵抗３３を通過するので、キャピラリチューブ１１と共
同して高負荷の抵抗が付与される。従って、蒸発器とし
て作用する室外熱交換器９の能力を高くでき、外気温度
が低い場合であっても熱を十分に汲み上げることがで
き、十分な暖房を得ることができる。In this heating operation, since the composite valve 31 passes through the resistor 33, a high load resistance is provided in cooperation with the capillary tube 11. Therefore, the ability of the outdoor heat exchanger 9 to act as an evaporator can be increased, and even if the outside air temperature is low, the heat can be sufficiently pumped up and sufficient heating can be obtained.

【００３４】暖房運転時に複合弁３１では、図２に示す
ように、弁体３９は冷媒に押されてストッパバルブ３７
側に移動して、内側流路４３の開口４３ａを閉じる。従
って、冷媒はストッパバルブ３７の内側流路を通らない
で、外側のねじ溝４５を通過するので、このねじ溝４５
により流体に所定の抵抗が付与される。In the combined valve 31 during the heating operation, as shown in FIG. 2, the valve body 39 is pushed by the refrigerant and is stopped by the stopper valve 37.
Then, the opening 43a of the inner flow path 43 is closed. Therefore, the refrigerant does not pass through the inner flow path of the stopper valve 37, but passes through the outer thread groove 45.
This imparts a predetermined resistance to the fluid.

【００３５】しかも、冷房運転から暖房運転に切り換え
る場合や、暖房運転時に除霜運転をする場合には、冷媒
の流れ方向が反対の方向に切り換わるが、その場合に
も、重量の軽い弁体３９が移動してストッパバルブ３７
の開口４３ａを開閉するだけであるから開閉時に騒音と
なることがほとんどない。特に、重量のあるストッパバ
ルブ３７は移動することなく管内に固定されているの
で、開口４３ａの開閉時における衝撃も少ない。In addition, when the cooling operation is switched to the heating operation or when the defrosting operation is performed during the heating operation, the flow direction of the refrigerant is switched to the opposite direction. 39 moves and stopper valve 37
Since the opening 43a is simply opened and closed, noise is hardly generated when opening and closing. Particularly, since the heavy stopper valve 37 is fixed in the pipe without moving, the impact when the opening 43a is opened and closed is small.

【００３６】本発明は、上述した実施例に限定されず、
本発明の要旨を逸脱しない範囲で種々変形可能である。The present invention is not limited to the above embodiment,
Various modifications can be made without departing from the scope of the present invention.

【００３７】例えば、ストッパバルブ３７の外側流路は
ねじ溝４５に限らず、図７に示すように、ストッパバル
ブ３７の縦に直線状に形成された溝４９であっても、上
述した実施例と同様な効果を得ることができる。For example, the outer flow path of the stopper valve 37 is not limited to the thread groove 45, but may be a groove 49 formed in a straight line in the vertical direction of the stopper valve 37 as shown in FIG. The same effect as can be obtained.

【００３８】[0038]

【発明の効果】請求項１に記載の発明によれば、ストッ
パバルブに内側流路と抵抗の大きい外側流路を形成し、
弁体を着座させて内側流路を閉じる構成とし、管内を流
体が一方向に流れる場合には内側流路を開き、流体が他
方向に流れる場合には、内側流路を閉じる構成であるか
ら、重量のあるストッパバルブは管内に固定されてお
り、軽い弁のみが移動するので、音の発生がほとんどな
く、騒音を防止できる。しかも構成が簡易であり、抵抗
の変更が容易であるから、流体に抵抗を付与するシステ
ムの設計が容易になる。According to the invention as set forth in claim 1, an inner flow passage and an outer flow passage having a large resistance are formed in the stopper valve,
Since the valve body is seated to close the inner flow path, the inner flow path is opened when the fluid flows in one direction in the pipe, and the inner flow path is closed when the fluid flows in the other direction. Since the heavy stopper valve is fixed inside the pipe and only the light valve moves, there is almost no sound generation and noise can be prevented. Moreover, since the structure is simple and the resistance can be easily changed, the design of the system that imparts resistance to the fluid becomes easy.

【００３９】また、請求項２に記載の発明によれば、外
側流路を螺旋状の溝としているので、抵抗値の調整が容
易にでき、且つ製造が容易である。According to the second aspect of the invention, since the outer flow path is a spiral groove, the resistance value can be easily adjusted and the manufacturing is easy.

【００４０】請求項３に記載の発明によれば、外側流路
を直線状の溝形状としているので、抵抗値の調整が容易
にでき、且つ製造が容易である。According to the third aspect of the invention, since the outer flow path has a linear groove shape, the resistance value can be easily adjusted and the manufacturing is easy.

【００４１】請求項４に記載の発明によれば、冷凍サイ
クルであって、冷房運転時と暖房運転時とで冷媒の流れ
方向を変えた場合に、その冷媒の流れ方向に応じて、流
通抵抗を変化させ、運転状態に応じた能力を確保する。
また、冷房運転と暖房運転時との切り換えの他、暖房運
転時における除霜運転の切り換え等においても、騒音の
発生を防止できる。According to the fourth aspect of the present invention, in the refrigeration cycle, when the flow direction of the refrigerant is changed between the cooling operation and the heating operation, the flow resistance depends on the flow direction of the refrigerant. To ensure the ability according to the driving condition.
In addition to the switching between the cooling operation and the heating operation, noise can be prevented from occurring when switching the defrosting operation during the heating operation.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の実施例による複合弁の配置状態を示
し、内側流路の開状態を示す断面図である。FIG. 1 is a cross-sectional view showing an arrangement state of a composite valve according to an embodiment of the present invention and showing an opened state of an inner channel.

【図２】本発明の実施例による複合弁の配置状態を示
し、内側流路の閉状態を示す断面図である。FIG. 2 is a cross-sectional view showing an arrangement state of a composite valve according to an embodiment of the present invention and showing a closed state of an inner channel.

【図３】図１に示す複合弁のストッパバルブを抜き出し
て示す側面図である。FIG. 3 is a side view showing a stopper valve of the combined valve shown in FIG. 1 in an extracted state.

【図４】図１に示す弁体の管内における配置状態を示す
断面図である。FIG. 4 is a cross-sectional view showing an arrangement state of the valve body shown in FIG. 1 in a pipe.

【図５】本発明の実施例にかかる冷凍サイクルの回路図
である。FIG. 5 is a circuit diagram of a refrigeration cycle according to an embodiment of the present invention.

【図６】他の実施例による弁体の形状を示す断面図であ
る。FIG. 6 is a sectional view showing the shape of a valve body according to another embodiment.

【図７】他の実施例による外側流路の形状を示す断面図
である。FIG. 7 is a cross-sectional view showing the shape of an outer channel according to another embodiment.

【符号の説明】[Explanation of symbols]

３１ 複合弁 ３７ ストッパバルブ ４３ 内側流路 ４５ ねじ溝（外側流路） ４９ 縦溝（外側流路） 31 Compound Valve 37 Stopper Valve 43 Inner Channel 45 Threaded Groove (Outer Channel) 49 Vertical Groove (Outer Channel)

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 管内に固定されて管内を仕切るストッパ
バルブと、このストッパバルブに対して移動可能に設け
られた弁体とを備え、前記ストッパバルブの内側には流
体が流通する内側流路が形成され、前記ストッパバルブ
の外周には前記管内を連通して前記内側流路より抵抗の
大きい外側流路が形成され、前記弁体が前記ストッパバ
ルブに着座した場合に前記内側流路を閉じて外側流路の
みに流体が通過するのを許容し、前記弁体が前記ストッ
パバルブから離れた場合に前記内側流路を開いてその流
体の流れを許容することを特徴とする複合弁。1. A stopper valve fixed to the inside of the pipe to partition the inside of the pipe, and a valve body movably provided with respect to the stopper valve, wherein an inner flow path through which a fluid flows is provided inside the stopper valve. An outer flow passage is formed on the outer periphery of the stopper valve, which communicates with the inside of the pipe and has a resistance higher than that of the inner flow passage. When the valve body is seated on the stopper valve, the inner flow passage is closed. A composite valve, wherein fluid is allowed to pass only through the outer flow passage, and when the valve body is separated from the stopper valve, the inner flow passage is opened to allow the flow of the fluid. 【請求項２】 前記外側流路は螺旋状の溝であることを
特徴とする請求項１に記載の複合弁。2. The composite valve according to claim 1, wherein the outer flow passage is a spiral groove. 【請求項３】 前記外側流路は流体の流れに沿って直線
状に形成されていることを特徴とする請求項１に記載の
複合弁。3. The composite valve according to claim 1, wherein the outer flow passage is formed linearly along a fluid flow. 【請求項４】 圧縮機、四方切換弁、利用側熱交換器、
減圧装置、熱源側熱交換器を管を接続して、四方切換弁
の切換えで利用側熱交換器による冷暖房運転を可能にし
た冷凍サイクルにおいて、 前記減圧装置と前記利用側熱交換器との間に複合弁を備
え、この複合弁は管内に固定されて管内を仕切るストッ
パバルブと、このストッパバルブに対して移動可能に設
けられた弁体とを備え、前記ストッパバルブの内側には
流体が流通する内側流路が形成され、前記ストッパバル
ブの外周には前記管内を連通して前記内側流路より抵抗
の大きい外側流路が形成され、前記弁体が前記ストッパ
バルブに着座した場合に前記内側流路を閉じて外側流路
のみに流体が通過するのを許容し、前記弁体が前記スト
ッパバルブから離れた場合に前記内側流路を開いてその
流体の流れを許容することを特徴とする冷凍サイクル。4. A compressor, a four-way switching valve, a utilization side heat exchanger,
In a refrigeration cycle in which a pressure reducing device and a heat source side heat exchanger are connected to a pipe, and a cooling / heating operation by the use side heat exchanger is enabled by switching a four-way switching valve, between the pressure reducing device and the use side heat exchanger Is equipped with a composite valve, which comprises a stopper valve fixed in the pipe to partition the interior of the pipe, and a valve body movably provided with respect to the stopper valve, and the fluid flows inside the stopper valve. An inner flow path is formed, and an outer flow path that communicates the inside of the pipe and has a higher resistance than the inner flow path is formed on the outer periphery of the stopper valve, and the inner side is formed when the valve body is seated on the stopper valve. The flow passage is closed to allow passage of the fluid only to the outer passage, and when the valve body is separated from the stopper valve, the inner passage is opened to allow the flow of the fluid. Frozen Uccle.
JP7123125A 1995-04-24 1995-04-24 Combination valve and refrigerating cycle using the combination valve Pending JPH08296927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7123125A JPH08296927A (en) 1995-04-24 1995-04-24 Combination valve and refrigerating cycle using the combination valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7123125A JPH08296927A (en) 1995-04-24 1995-04-24 Combination valve and refrigerating cycle using the combination valve

Publications (1)

Publication Number Publication Date
JPH08296927A true JPH08296927A (en) 1996-11-12

Family

ID=14852810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7123125A Pending JPH08296927A (en) 1995-04-24 1995-04-24 Combination valve and refrigerating cycle using the combination valve

Country Status (1)

Country Link
JP (1) JPH08296927A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005001346A1 (en) * 2003-06-06 2005-01-06 E.I. Dupont De Nemours And Company Device for metering refrigerant flow to an evaporator and systems incorporating same
JP2006266541A (en) * 2005-03-22 2006-10-05 Fuji Koki Corp Expansion valve integrated with solenoid valve
JP2010263922A (en) * 2010-08-31 2010-11-25 Sanyo Electric Co Ltd Apparatus for producing frozen dessert
CN106949676A (en) * 2017-05-12 2017-07-14 吴亚妹 A kind of bidirectional throttling valve of unidirectional variable restrictor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005001346A1 (en) * 2003-06-06 2005-01-06 E.I. Dupont De Nemours And Company Device for metering refrigerant flow to an evaporator and systems incorporating same
JP2006266541A (en) * 2005-03-22 2006-10-05 Fuji Koki Corp Expansion valve integrated with solenoid valve
JP4503471B2 (en) * 2005-03-22 2010-07-14 株式会社不二工機 Expansion valve with integrated solenoid valve
JP2010263922A (en) * 2010-08-31 2010-11-25 Sanyo Electric Co Ltd Apparatus for producing frozen dessert
CN106949676A (en) * 2017-05-12 2017-07-14 吴亚妹 A kind of bidirectional throttling valve of unidirectional variable restrictor

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