JP6811981B2 - Cap and pressure vessel for refrigeration cycle - Google Patents

Cap and pressure vessel for refrigeration cycle Download PDF

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JP6811981B2
JP6811981B2 JP2016146270A JP2016146270A JP6811981B2 JP 6811981 B2 JP6811981 B2 JP 6811981B2 JP 2016146270 A JP2016146270 A JP 2016146270A JP 2016146270 A JP2016146270 A JP 2016146270A JP 6811981 B2 JP6811981 B2 JP 6811981B2
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cap
pressure vessel
header
refrigerant
refrigeration cycle
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JP2018017426A (en
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利道 岩山
利道 岩山
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Fujikoki Corp
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Description

本発明は、冷凍サイクル用圧力容器で使用するキャップ及びキャップを備えた冷凍サイクル用圧力容器に関する。 The present invention relates to a refrigerating cycle pressure vessel having a cap and a cap for use in the refrigerating cycle pressure vessel.

冷凍サイクルにおいて、気液を分離するためのレシーバやアキュムレータ等の冷凍サイクル用圧力容器が用いられている。レシーバであれば、凝縮器で凝縮した冷媒を容器内に流入させ、気液を分離し、液冷媒のみを膨張弁へ向けて流出させる。また、アキュムレータであれば、蒸発器からの冷媒を容器内に流入させ、気液を分離し、ガス冷媒を圧縮機に向けて流出させる。このとき、レシーバ及びアキュムレータの内圧は大気圧より高くして使用されるため圧力容器としての機能を果たす。 In the refrigeration cycle, a pressure vessel for the refrigeration cycle such as a receiver or an accumulator for separating gas and liquid is used. If it is a receiver, the refrigerant condensed by the condenser flows into the container, gas and liquid are separated, and only the liquid refrigerant flows out toward the expansion valve. Further, in the case of an accumulator, the refrigerant from the evaporator is allowed to flow into the container, gas and liquid are separated, and the gas refrigerant is discharged toward the compressor. At this time, since the internal pressure of the receiver and the accumulator is higher than the atmospheric pressure, it functions as a pressure vessel.

冷凍サイクル用圧力容器では、冷媒を流入させるための冷媒流入部と冷媒を流出させるための冷媒流出部とを有している。そして、冷媒流入部及び冷媒流出部は端部から突出して並んで配置される構造物が開示されている（例えば、特許文献１参照）。 The refrigeration cycle pressure vessel has a refrigerant inflow section for allowing the refrigerant to flow in and a refrigerant outflow section for allowing the refrigerant to flow out. A structure is disclosed in which the refrigerant inflow portion and the refrigerant outflow portion are arranged so as to project from the end portions (see, for example, Patent Document 1).

特開２０１４−２０２４４０JP 2014-202440

冷凍サイクル用圧力容器の容器内部は高圧のため、容器端部から突出した冷媒流入部及び冷媒流出部に少しでも傷がつくと、冷媒の漏れにつながる。また、冷媒流入部及び冷媒流出部には、他の部材と接合した際の密封性を高めるためのシール部材を付けている。このシール部材の欠落も冷媒の漏れにつながる。 Since the inside of the pressure vessel for the refrigeration cycle has a high pressure, if the refrigerant inflow portion and the refrigerant outflow portion protruding from the end of the container are damaged even a little, the refrigerant may leak. Further, the refrigerant inflow portion and the refrigerant outflow portion are provided with a seal member for enhancing the sealing property when joined with other members. The lack of the sealing member also leads to the leakage of the refrigerant.

一方で、冷凍サイクル用圧力容器の内部には乾燥剤を入れており、圧力容器の出荷時にこれを密封するため冷媒流入部及び冷媒流出部を塞ぐキャップを付ける必要がある。また、キャップを付けることで、突出した冷媒流入部及び冷媒流出部を保護することができる。 On the other hand, a desiccant is contained inside the pressure vessel for the refrigeration cycle, and it is necessary to attach a cap to close the refrigerant inflow portion and the refrigerant outflow portion in order to seal the desiccant at the time of shipment of the pressure vessel. Further, by attaching a cap, it is possible to protect the protruding refrigerant inflow portion and the refrigerant outflow portion.

しかし、圧力容器にキャップを付けた状態では、容器端部から突出した冷媒流入部及び冷媒流出部に傷があるか否かを確認することができないか、あるいは極めて困難である。工場内での移動や出荷前の製品検査のとき（即ち、キャップを取付ける前のとき）に傷がつく可能性もあり、キャップを付けた状態でも傷の有無を確認することが望まれる。また、シール部材の装着確認もキャップを付けた状態でも確認することが望まれる。 However, when the pressure vessel is capped, it is not possible or extremely difficult to confirm whether or not the refrigerant inflow portion and the refrigerant outflow portion protruding from the end of the container are damaged. There is a possibility of scratches when moving in the factory or inspecting the product before shipping (that is, before attaching the cap), and it is desirable to check for scratches even with the cap attached. It is also desirable to confirm the attachment of the seal member even with the cap attached.

そこで、本発明の目的は、外部からの視認性を高めた冷凍サイクル用圧力容器のキャップ及びそのキャップを備えた冷凍サイクル用圧力容器を提供することにある。 Therefore, an object of the present invention is to provide a cap of a pressure vessel for a refrigerating cycle with enhanced visibility from the outside and a pressure vessel for a refrigerating cycle provided with the cap.

上記課題を解決するために、代表的な本発明のキャップの１つは、圧力容器本体と、ヘッダと、前記ヘッダから突出している冷媒流入部および冷媒流出部とを有する冷凍サイクル用圧力容器に装着するキャップであって、前記キャップは、板部および側周部を備え、前記板部および前記側周部は少なくとも前記冷媒流入部および前記冷媒流出部を外部から視認可能な透明な部材から形成されており、前記圧力容器本体と前記ヘッダとが全周で溶接されて溶接部が形成され、前記キャップを前記ヘッダに取り付けたとき、前記冷媒流入部および前記冷媒流出部の先端が前記板部の内面に当接した状態で、前記側周部が前記溶接部に届かない。 In order to solve the above problems, one of the representative caps of the present invention is a pressure vessel for a refrigeration cycle having a pressure vessel main body, a header, and a refrigerant inflow portion and a refrigerant outflow portion protruding from the header. The cap to be mounted includes a plate portion and a side peripheral portion, and the plate portion and the side peripheral portion are formed of at least the refrigerant inflow portion and the refrigerant outflow portion from a transparent member that can be visually recognized from the outside. When the pressure vessel body and the header are welded all around to form a welded portion and the cap is attached to the header, the tips of the refrigerant inflow portion and the refrigerant outflow portion are the plate portions. The side peripheral portion does not reach the welded portion in a state of being in contact with the inner surface of the .

本発明によるキャップの一実施例において、前記側周部の外側に凹凸部を有していてもよい。また、前記側周部の前記板部と反対側の端部の内側の角は丸め部となっていてもよい。 In one embodiment of the cap according to the present invention, an uneven portion may be provided on the outside of the side peripheral portion. Further, the inner corner of the end portion of the side peripheral portion opposite to the plate portion may be a rounded portion.

また、代表的な本発明の冷凍サイクル用圧力容器の１つは、圧力容器本体と、ヘッダと、前記ヘッダから突出している冷媒流入部および冷媒流出部を備え、前記キャップが装着されている。 Further, one of the typical pressure vessels for a refrigeration cycle of the present invention includes a pressure vessel main body, a header, a refrigerant inflow portion and a refrigerant outflow portion protruding from the header, and the cap is attached.

この発明による冷凍サイクル用圧力容器のキャップは、冷凍サイクル用圧力容器の冷媒流入部および冷媒流出部を外部から視認することができる。また、この発明による冷凍サイクル用圧力容器は、キャップを装着した状態で冷媒流入部および冷媒流出部を外部から視認することができる。 The cap of the pressure vessel for a refrigeration cycle according to the present invention allows the refrigerant inflow portion and the refrigerant outflow portion of the refrigeration cycle pressure vessel to be visually recognized from the outside. Further, in the refrigeration cycle pressure vessel according to the present invention, the refrigerant inflow portion and the refrigerant outflow portion can be visually recognized from the outside with the cap attached.

本発明によるキャップの第１実施例を示す側面図である。It is a side view which shows the 1st Example of the cap by this invention. 本発明によるキャップの第１実施例を示す上面図である。It is a top view which shows the 1st Example of the cap by this invention. キャップを装着する前の冷凍サイクル用圧力容器の一例を示す側面図及び断面図である。It is a side view and sectional view which shows an example of the pressure vessel for refrigeration cycle before attaching a cap. 図３のヘッダ部材近傍を拡大した側面図である。It is an enlarged side view of the vicinity of the header member of FIG. 第１実施例のキャップ装着した状態の冷凍サイクル用圧力容器の一例を示す側面図及び断面図である。It is a side view and sectional view which shows an example of the pressure vessel for refrigeration cycle in the state which attached the cap of 1st Example. 図５のキャップ近傍を拡大した側面図である。It is an enlarged side view of the vicinity of the cap of FIG. 本発明によるキャップの第２実施例を示す側面図及び断面図である。It is a side view and sectional drawing which shows the 2nd Example of the cap by this invention.

＜第１実施例＞
図１は、本発明によるキャップの第１実施例を示す側面図である。図２は、本発明によるキャップの第１実施例を示す上面図である。 <First Example>
FIG. 1 is a side view showing a first embodiment of a cap according to the present invention. FIG. 2 is a top view showing a first embodiment of the cap according to the present invention.

キャップ１０は、板部１１と、側周部１２を備えており、さらに、側周部１２の外側表面には凹凸部１３を有している。 The cap 10 includes a plate portion 11 and a side peripheral portion 12, and further has an uneven portion 13 on the outer surface of the side peripheral portion 12.

板部１１は、厚さが一定の円板状の部材で形成されている。板部１１の内面１１ａは、平らに形成され後述する冷媒流入部６５と冷媒流出部６６を塞ぐことができる。 The plate portion 11 is formed of a disk-shaped member having a constant thickness. The inner surface 11a of the plate portion 11 is formed flat and can close the refrigerant inflow portion 65 and the refrigerant outflow portion 66, which will be described later.

側周部１２は、厚さが一定の円筒状の部材で形成されている。側周部１２の内面１２ａの下部は、後述する外周面上部６１１に挿入できるように、外周面上部６１１の外周に合わせた形状となっている。 The side peripheral portion 12 is formed of a cylindrical member having a constant thickness. The lower portion of the inner surface 12a of the side peripheral portion 12 has a shape that matches the outer periphery of the outer peripheral surface upper portion 611 so that it can be inserted into the outer peripheral surface upper portion 611 described later.

板部１１は、側周部１２の円筒の上側に形成され、側周部１２の片側を塞ぐように形成されている。一方、側周部１２の下側は開口している。このため、キャップ１０は、片方が板部１１側で塞がり、板部１１の反対側が開口した円筒状の部材となっている。ここで、板部１１と側周部１２が接続される角部１５は、曲面で接続されていてもよい。 The plate portion 11 is formed on the upper side of the cylinder of the side peripheral portion 12, and is formed so as to close one side of the side peripheral portion 12. On the other hand, the lower side of the side peripheral portion 12 is open. Therefore, the cap 10 is a cylindrical member in which one side is closed on the plate portion 11 side and the opposite side of the plate portion 11 is opened. Here, the corner portion 15 to which the plate portion 11 and the side peripheral portion 12 are connected may be connected by a curved surface.

そして、板部１１と側周部１２は、後述する冷媒流入部６５と冷媒流出部６６の状態やシール部材８０の有無を外部から視認可能とするために、透明又は無色透明の部材から形成されている。例えば、キャップ１０全体をＡＢＳ樹脂で成型することにより透明とすることができる。透明の度合いは、シール部材８０の有無を確認できる程度、さらには、冷媒流入部６５と冷媒流出部６６の傷や汚れ等の有無を確認できる程度とする。 The plate portion 11 and the side peripheral portion 12 are formed of transparent or colorless transparent members so that the state of the refrigerant inflow portion 65 and the refrigerant outflow portion 66, which will be described later, and the presence or absence of the seal member 80 can be visually recognized from the outside. ing. For example, the entire cap 10 can be made transparent by molding it with ABS resin. The degree of transparency is such that the presence or absence of the seal member 80 can be confirmed, and further, the presence or absence of scratches or stains on the refrigerant inflow portion 65 and the refrigerant outflow portion 66 can be confirmed.

凹凸部１３は、側周部１２の外側１２ｂにローレット状の凹凸として形成されている。凹凸部１３の範囲は、冷媒流入部６５と冷媒流出部６６の視認の妨げにならない範囲となるようにする。 The uneven portion 13 is formed as a knurled uneven portion on the outer side 12b of the side peripheral portion 12. The range of the uneven portion 13 is set so as to be a range that does not interfere with the visibility of the refrigerant inflow portion 65 and the refrigerant outflow portion 66.

図３は、キャップを装着する前の冷凍サイクル用圧力容器の一例を示す側面図及び断面図であり、中心線より左側が側面図、右側が中心断面図を示す。図４は、図３のヘッダ部材近傍を拡大した側面図である。 FIG. 3 is a side view and a cross-sectional view showing an example of a pressure vessel for a refrigeration cycle before the cap is attached. FIG. 4 is an enlarged side view of the vicinity of the header member of FIG.

冷凍サイクル用圧力容器５０は、ヘッダ部材６０と圧力容器本体７０を接合して形成されている。冷凍サイクル用圧力容器５０は、レシーバやアキュムレータであり、内部７３には目的に沿った構成を適宜採用できる。ヘッダ部材６０と圧力容器本体７０の材質は、例えばアルミ合金を適用できる。 The refrigeration cycle pressure vessel 50 is formed by joining the header member 60 and the pressure vessel body 70. The refrigeration cycle pressure vessel 50 is a receiver or an accumulator, and the internal 73 can be appropriately configured according to the purpose. For the material of the header member 60 and the pressure vessel body 70, for example, an aluminum alloy can be applied.

圧力容器本体７０は、筒部７１と底部７２により構成されている。筒部７１は円筒状であり、その下端は底部７２になっている。底部７２と反対側となる、筒部７１の上端は開口している。 The pressure vessel body 70 is composed of a cylinder portion 71 and a bottom portion 72. The tubular portion 71 has a cylindrical shape, and its lower end is a bottom portion 72. The upper end of the tubular portion 71, which is opposite to the bottom portion 72, is open.

ヘッダ部材６０は、ヘッダ６１、ヘッダ取付部６２、冷媒流入部６５、冷媒流出部６６を備えている。ヘッダ６１は円柱状の部材であり、その外径は圧力容器本体７０の筒部７１の外径と略同じである。ヘッダ６１の下側にヘッダ６１よりも外径の小さい円柱状のヘッダ取付部６２を備えており、ヘッダ６１とヘッダ取付部６２の間には段部６１ｂを備えている。ヘッダ取付部６２の外径は、圧力容器本体７０の筒部７１内に嵌るように筒部７１の内径に合わせた大きさとなっている。また、ヘッダ６１の上端には、冷媒が流入する冷媒流入部６５と冷媒が流出する冷媒流出部６６が同じ方向に並んで突出している。これらの高さは同じになっている。 The header member 60 includes a header 61, a header mounting portion 62, a refrigerant inflow portion 65, and a refrigerant outflow portion 66. The header 61 is a columnar member, and its outer diameter is substantially the same as the outer diameter of the tubular portion 71 of the pressure vessel main body 70. A columnar header mounting portion 62 having an outer diameter smaller than that of the header 61 is provided below the header 61, and a step portion 61b is provided between the header 61 and the header mounting portion 62. The outer diameter of the header mounting portion 62 has a size that matches the inner diameter of the cylinder portion 71 so as to fit inside the cylinder portion 71 of the pressure vessel main body 70. Further, at the upper end of the header 61, a refrigerant inflow portion 65 into which the refrigerant flows and a refrigerant outflow portion 66 in which the refrigerant flows out protrude side by side in the same direction. These heights are the same.

冷媒流入部６５は、ヘッダ６１から上側へ延びる付け根部６５ｂと、付け根部６５ｂから上側へ延び、付け根部６５ｂよりも外径の小さい先端部６５ａを備えている。付け根部６５ｂと先端部６５ａの間は外径が異なるため外周に段部が形成される。さらに、冷媒流入部６５の内部に冷媒流入孔６５ｃを備えている。このため、冷媒流入部６５は、外側に段部のあるパイプ形状となっている。また、冷媒流入孔６５ｃはヘッダ６１及びヘッダ取付部６２も貫通している。 The refrigerant inflow portion 65 includes a root portion 65b extending upward from the header 61 and a tip portion 65a extending upward from the root portion 65b and having an outer diameter smaller than that of the root portion 65b. Since the outer diameter is different between the base portion 65b and the tip portion 65a, a step portion is formed on the outer circumference. Further, a refrigerant inflow hole 65c is provided inside the refrigerant inflow portion 65. Therefore, the refrigerant inflow portion 65 has a pipe shape with a stepped portion on the outside. Further, the refrigerant inflow hole 65c also penetrates the header 61 and the header mounting portion 62.

冷媒流出部６６は、ヘッダ６１から上側へ延びる付け根部６６ｂと、付け根部６６ｂから上側へ延び、付け根部６６ｂよりも外径の小さい先端部６６ａを備えている。付け根部６６ｂと先端部６６ａの間は外径が異なるため外周に段部が形成される。さらに、冷媒流入部６５の内部には、冷媒流入部６５の冷媒流入孔６５ｃと同様に、冷媒流出孔（図示省略）を備えている。このため、冷媒流出部６６も、外側に段部のあるパイプ形状となっている。 The refrigerant outflow portion 66 includes a root portion 66b extending upward from the header 61 and a tip portion 66a extending upward from the root portion 66b and having an outer diameter smaller than that of the root portion 66b. Since the outer diameter is different between the base portion 66b and the tip portion 66a, a step portion is formed on the outer circumference. Further, the inside of the refrigerant inflow portion 65 is provided with a refrigerant outflow hole (not shown) like the refrigerant inflow hole 65c of the refrigerant inflow portion 65. Therefore, the refrigerant outflow portion 66 also has a pipe shape with a stepped portion on the outside.

ヘッダ部材６０と圧力容器本体７０の接合は、まず、ヘッダ部材６０のヘッダ取付部６２を圧力容器本体７０の筒部７１に筒部７１の上部開口側から挿入する。すると、ヘッダ６１の下側の段部６１ｂと筒部７１の上端が当接するので、この部分で外周側から全周に溶接７５を行う。この溶接により、筒部７１の外周の上端部とヘッダ６１の外周面６１ａの下部が溶け込み接合される。 To join the header member 60 and the pressure vessel body 70, first, the header mounting portion 62 of the header member 60 is inserted into the cylinder portion 71 of the pressure vessel body 70 from the upper opening side of the cylinder portion 71. Then, the lower step portion 61b of the header 61 and the upper end of the tubular portion 71 come into contact with each other, and welding 75 is performed from the outer peripheral side to the entire circumference at this portion. By this welding, the upper end of the outer circumference of the tubular portion 71 and the lower portion of the outer peripheral surface 61a of the header 61 are melted and joined.

この状態で、ヘッダ６１の外周面６１ａは、上側は溶接７５による溶け込みのない外周面上部６１１となり、下側が溶接７５による溶け込みのある外周面下部６１２となる。ここで、溶け込みのない外周面上部６１１は円柱の外周面のままとなる。 In this state, the upper side of the outer peripheral surface 61a of the header 61 is the upper outer peripheral surface 611 without welding 75, and the lower side is the lower outer peripheral surface 612 with welding 75. Here, the upper outer peripheral surface 611 without penetration remains the outer peripheral surface of the cylinder.

冷媒流入部６５及び冷媒流出部６６には、それぞれシール部材８０が装着される。シール部材８０はＯリング等のリング部材であって、先端部６５ａ、６６ａの外周における、付け根部６５ｂ、６６ｂの上部に形成される段部近傍に配置される。 Seal members 80 are attached to the refrigerant inflow section 65 and the refrigerant outflow section 66, respectively. The seal member 80 is a ring member such as an O-ring, and is arranged on the outer periphery of the tip portions 65a and 66a in the vicinity of the step portion formed on the upper portion of the base portions 65b and 66b.

図５は、第１実施例のキャップを装着した状態の冷凍サイクル用圧力容器の一例を示す側面図及び断面図であり、中心線より左側が側面図、右側が中心断面図を示す。図６は、図５のキャップ近傍を拡大した側面図である。 FIG. 5 is a side view and a cross-sectional view showing an example of a pressure vessel for a refrigeration cycle in a state where the cap of the first embodiment is attached, and the left side from the center line is the side view and the right side is the central cross-sectional view. FIG. 6 is an enlarged side view of the vicinity of the cap of FIG.

図５では、冷凍サイクル用圧力容器５０の内部７３に袋９１に収納された乾燥剤９０が配置されている。乾燥剤９０は、例えば、シリカゲルのような粒状で構成され、冷凍サイクル用圧力容器の用途に応じて冷媒中の水分を除去するために使用される。袋９１は、例えば、布の縁部に熱を加え溶着したフェルト様の布袋を適用できる。 In FIG. 5, the desiccant 90 stored in the bag 91 is arranged inside 73 of the pressure vessel 50 for the refrigeration cycle. The desiccant 90 is composed of granules such as silica gel and is used to remove water in the refrigerant depending on the use of the pressure vessel for the refrigeration cycle. For the bag 91, for example, a felt-like cloth bag obtained by applying heat to the edge of the cloth and welding the bag can be applied.

キャップ１０は、冷凍サイクル用圧力容器５０のヘッダ部材６０に取り付けられる。まず、キャップ１０の開口側を下にして、キャップ１０の側周部１２の内面１２ａにおける下部がヘッダ６１の外周面上部６１１に嵌め合うように挿入される。そして、キャップ１０の板部１１の内面１１ａ（下面側）が、冷媒流入部６５の先端部６５ａの上側面、及び、冷媒流出部６６の先端部６６ａの上側面と当接する。これにより、キャップ１０の冷凍サイクル用圧力容器５０への装着が完了する。 The cap 10 is attached to the header member 60 of the refrigeration cycle pressure vessel 50. First, the lower portion of the inner surface 12a of the side peripheral portion 12 of the cap 10 is inserted so as to fit the upper portion 611 of the outer peripheral surface of the header 61 with the opening side of the cap 10 facing down. Then, the inner surface 11a (lower surface side) of the plate portion 11 of the cap 10 comes into contact with the upper side surface of the tip portion 65a of the refrigerant inflow portion 65 and the upper side surface of the tip portion 66a of the refrigerant outflow portion 66. As a result, the attachment of the cap 10 to the refrigeration cycle pressure vessel 50 is completed.

このとき、キャップ１０の高さは、キャップ１０を装着した状態で、キャップ１０の下端部１２ｃが溶接７５までかからない高さとする。また、キャップ１０における凹凸部１３の範囲は、キャップ１０を装着した状態で、キャップ１０の下端部１２ｃからヘッダ６１の上端までの範囲とし、冷媒流入部６５及び冷媒流出部６６、シール部材８０の外部からの視認性をよくできる。また、主に先端部６５ａ、６６ａの傷や汚れ等の確認を考慮すれば、凹凸部１３の範囲は、図５の中心線から垂直方向に見て、キャップ１０の下端部１２ｃから外周面上部６１１および付け根部６５ｂ、６６ｂの側面を覆う範囲であってもよい。 At this time, the height of the cap 10 is set so that the lower end portion 12c of the cap 10 does not reach the welding 75 with the cap 10 attached. Further, the range of the uneven portion 13 of the cap 10 is the range from the lower end portion 12c of the cap 10 to the upper end of the header 61 with the cap 10 attached, and the refrigerant inflow portion 65, the refrigerant outflow portion 66, and the seal member 80. The visibility from the outside can be improved. Further, mainly considering the confirmation of scratches and dirt on the tip portions 65a and 66a, the range of the uneven portion 13 is viewed from the center line of FIG. 5 in the vertical direction, from the lower end portion 12c of the cap 10 to the upper part of the outer peripheral surface. It may be a range that covers the sides of the 611 and the bases 65b and 66b.

キャップ１０を装着した状態では、キャップ１０における板部１１と側周部１２が透明であるので、冷媒流入部６５及び冷媒流出部６６における傷や汚れ等の有無を外部から確認することができる。これにより、キャップ１０の装着した状態でも、外部から傷や汚れ等の発見をすることができる。さらに、キャップ１０の装着した状態でも、外部からシール部材８０の有無も確認でき、部品の欠落を防止することができる。 When the cap 10 is attached, the plate portion 11 and the side peripheral portion 12 of the cap 10 are transparent, so that the presence or absence of scratches, dirt, etc. on the refrigerant inflow portion 65 and the refrigerant outflow portion 66 can be confirmed from the outside. As a result, scratches, dirt, and the like can be found from the outside even when the cap 10 is attached. Further, even when the cap 10 is attached, the presence or absence of the seal member 80 can be confirmed from the outside, and it is possible to prevent the parts from being missing.

さらに、キャップ１０を装着した状態では、上述したように、キャップ１０の側周部１２の内面１２ａと、ヘッダ６１の外周面上部６１１との嵌め合いにより、外気がキャップ１０の内部に流入することを防止する。さらに、キャップ１０の板部１１の内面１１ａが、冷媒流入部６５の先端部６５ａの上側面、及び、冷媒流出部６６の先端部６６ａの上側面へ当接する構成により、キャップ１０内の気体や湿気が冷凍サイクル用圧力容器５０の内部７３に流入することを防止する。これらにより、冷凍サイクル用圧力容器５０の内部７３の機密性が保たれる。 Further, when the cap 10 is attached, as described above, the outside air flows into the inside of the cap 10 by fitting the inner surface 12a of the side peripheral portion 12 of the cap 10 and the upper outer peripheral surface 611 of the header 61. To prevent. Further, the inner surface 11a of the plate portion 11 of the cap 10 abuts on the upper side surface of the tip portion 65a of the refrigerant inflow portion 65 and the upper side surface of the tip portion 66a of the refrigerant outflow portion 66. Prevents moisture from flowing into the inside 73 of the refrigeration cycle pressure vessel 50. As a result, the confidentiality of the inside 73 of the pressure vessel 50 for the refrigeration cycle is maintained.

キャップ１０を冷凍サイクル用圧力容器５０から取り外す作業を行うときは、作業者が凹凸部１３を持って冷凍サイクル用圧力容器５０から引き抜くことにより、凹凸部１３の摩擦抵抗によりキャップ１０を引き抜く力が増し、取り外しがしやすくなる。 When removing the cap 10 from the refrigeration cycle pressure vessel 50, the operator holds the uneven portion 13 and pulls it out from the refrigeration cycle pressure vessel 50, so that the frictional resistance of the uneven portion 13 exerts a force to pull out the cap 10. Increased and easier to remove.

＜第２実施例＞
図７は、本発明によるキャップの第２実施例を示す側面図及び断面図であり、中心線より左側が側面図、右側が中心断面図を示す。第２実施例は、第１実施例のキャップ１０における側周部１２の下端の角を丸め部１２ｄとした構成であり、それ以外は第１実施例で示したものと共通であるので、共通の箇所は再度の説明を省略してある。 <Second Example>
FIG. 7 is a side view and a sectional view showing a second embodiment of the cap according to the present invention, in which the left side from the center line shows the side view and the right side shows the central sectional view. The second embodiment has a configuration in which the corner of the lower end of the side peripheral portion 12 of the cap 10 of the first embodiment is rounded to 12d, and other than that, it is common to that shown in the first embodiment. The explanation of is omitted again.

第２実施例のキャップ１０’は、側周部１２’に丸め部１２ｄを備えている。丸め部１２ｄは、側周部１２’の内面１２ａの下部と側周部１２’の下端部１２ｃを結ぶ滑らかな曲面により構成したものである。この曲面は曲率半径が一定でもよい。 The cap 10'of the second embodiment includes a rounded portion 12d on the side peripheral portion 12'. The rounded portion 12d is formed of a smooth curved surface connecting the lower portion of the inner surface 12a of the side peripheral portion 12'and the lower end portion 12c of the side peripheral portion 12'. This curved surface may have a constant radius of curvature.

第２実施例の構成により、キャップ１０’を冷凍サイクル用圧力容器５０に装着するとき、丸め部１２ｄがヘッダ６１上部の角６１ｃ（図４参照）に当たる。このとき、丸め部１２ｄが受ける外側への反力により、キャップ１０’はキャップ１０’における内面１２ａとヘッダ６１の外周面上部６１１が嵌め合う方向に案内されるので、キャップ１０’のスムーズな挿入が可能となる。 According to the configuration of the second embodiment, when the cap 10'is attached to the refrigeration cycle pressure vessel 50, the rounded portion 12d hits the corner 61c (see FIG. 4) at the upper part of the header 61. At this time, due to the outward reaction force received by the rounded portion 12d, the cap 10'is guided in the direction in which the inner surface 12a of the cap 10'and the upper outer peripheral surface 611 of the header 61 are fitted, so that the cap 10'is smoothly inserted. Is possible.

以上の様に、本発明の実施形態について第１実施例、第２実施例を示してきたが、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例に設けられた全ての構成（構造）を備えるものに限定されるものではない。また、ある実施例の構成の一部を削除したり、他の実施例の構成に置き換えたり、あるいはまた、ある実施例の構成に他の実施例の構成を加えることも可能である。 As described above, the first embodiment and the second embodiment have been shown with respect to the embodiment of the present invention, but the present invention is not limited to the above-described embodiment and includes various modifications. For example, the present invention is not limited to the one having all the configurations (structures) provided in the above-described embodiment. It is also possible to delete a part of the configuration of one embodiment, replace it with the configuration of another embodiment, or add the configuration of another embodiment to the configuration of one embodiment.

例えば、上記実施例では、キャップ１０の板部１１は円板状であり、側周部１２は円筒状としたが、これに限らず、冷凍サイクル用圧力容器の形状に合わせた形状とすることが可能である。 For example, in the above embodiment, the plate portion 11 of the cap 10 has a disk shape and the side peripheral portion 12 has a cylindrical shape, but the shape is not limited to this, and the shape may match the shape of the pressure vessel for the refrigeration cycle. Is possible.

また、上記実施例では、凹凸部１３はローレット状であるとしたが、これに限らなくても良い。凹凸により、キャップの取り外しをし易くするための形状であれば、種々の凹凸形状を適用可能である。 Further, in the above embodiment, the uneven portion 13 has a knurled shape, but the present invention is not limited to this. Various uneven shapes can be applied as long as the shape is such that the cap can be easily removed due to the unevenness.

また、上記実施例では、キャップ１０において、板部１１と側周部１２が透明又は無色透明の部材から形成されていることで、全体として視認性を高めることはできる。しかし、キャップ１０を冷凍サイクル用圧力容器５０に装着した状態で、冷媒流入部６５および冷媒流出部６６の状態とシール部材８０の装着とを確認できれば、透明の範囲を一部とすることは可能である。 Further, in the above embodiment, in the cap 10, the plate portion 11 and the side peripheral portion 12 are formed of a transparent or colorless transparent member, so that the visibility can be improved as a whole. However, if the state of the refrigerant inflow portion 65 and the refrigerant outflow portion 66 and the attachment of the seal member 80 can be confirmed with the cap 10 attached to the refrigeration cycle pressure vessel 50, the transparent range can be made a part. Is.

また、上記第２実施例では、キャップ１０において、丸め部１２ｄの構成を有することを説明したが、丸め部１２ｄの代わりに面取り部を適用してもよい。 Further, in the second embodiment described above, the cap 10 has a structure of the rounded portion 12d, but a chamfered portion may be applied instead of the rounded portion 12d.

１０ キャップ
１１ 板部
１２ 側周部
１２ｄ 丸め部
１３ 凹凸部
５０ 冷凍サイクル用圧力容器
６０ ヘッダ部材
６１ ヘッダ
６２ ヘッダ取付部
６５ 冷媒流入部
６６ 冷媒流出部
７０ 圧力容器本体
７１ 筒部
７２ 底部
８０ シール部材 10 Cap 11 Plate 12 Side circumference 12d Rounding 13 Concavo-convex 50 Refrigerating cycle pressure vessel 60 Header member 61 Header 62 Header mounting part 65 Refrigerant inflow part 66 Refrigerant outflow part 70 Pressure vessel body 71 Cylinder 72 Bottom 80 Seal member

Claims (4)

圧力容器本体と、ヘッダと、前記ヘッダから突出している冷媒流入部および冷媒流出部とを有する冷凍サイクル用圧力容器に装着するキャップであって、
前記キャップは、板部および側周部を備え、
前記板部および前記側周部は少なくとも前記冷媒流入部および前記冷媒流出部を外部から視認可能な透明な部材から形成されており、
前記圧力容器本体と前記ヘッダとが全周で溶接されて溶接部が形成され、
前記キャップを前記ヘッダに取り付けたとき、前記冷媒流入部および前記冷媒流出部の先端が前記板部の内面に当接した状態で、前記側周部が前記溶接部に届かない、冷凍サイクル用圧力容器のキャップ。 A cap to be attached to a refrigeration cycle pressure vessel having a pressure vessel main body, a header, and a refrigerant inflow portion and a refrigerant outflow portion protruding from the header.
The cap includes a plate portion and a side peripheral portion.
The plate portion and the side peripheral portion are formed of at least the refrigerant inflow portion and the refrigerant outflow portion from transparent members that can be visually recognized from the outside .
The pressure vessel body and the header are welded all around to form a welded portion.
When the cap is attached to the header, the refrigeration cycle pressure at which the side peripheral portion does not reach the welded portion in a state where the tip of the refrigerant inflow portion and the refrigerant outflow portion is in contact with the inner surface of the plate portion. Container cap. 前記側周部の外側に凹凸部を有している、
請求項１に記載の冷凍サイクル用圧力容器のキャップ。 It has an uneven portion on the outside of the side peripheral portion.
The cap of the pressure vessel for the refrigeration cycle according to claim 1. 前記側周部の前記板部と反対側の端部の内側の角は丸め部となっている、
請求項１又は２に記載の冷凍サイクル用圧力容器のキャップ。 The inner corner of the end of the side peripheral portion opposite to the plate portion is a rounded portion.
The cap of the pressure vessel for the refrigeration cycle according to claim 1 or 2. 圧力容器本体と、ヘッダと、前記ヘッダから突出している冷媒流入部および冷媒流出部を備え、請求項１乃至３のいずれか一項に記載のキャップが装着されている冷凍サイクル用圧力容器。 A pressure vessel for a refrigeration cycle, comprising a pressure vessel main body, a header, a refrigerant inflow portion and a refrigerant outflow portion protruding from the header, and the cap according to any one of claims 1 to 3.
JP2016146270A 2016-07-26 2016-07-26 Cap and pressure vessel for refrigeration cycle Active JP6811981B2 (en)

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