JP2021121762A5 - - Google Patents

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JP2021121762A5
JP2021121762A5 JP2021080648A JP2021080648A JP2021121762A5 JP 2021121762 A5 JP2021121762 A5 JP 2021121762A5 JP 2021080648 A JP2021080648 A JP 2021080648A JP 2021080648 A JP2021080648 A JP 2021080648A JP 2021121762 A5 JP2021121762 A5 JP 2021121762A5
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Prior art keywords
pipe
diameter portion
refrigerant
large diameter
brazing material
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JP2021080648A
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JP7477777B2 (en
JP2021121762A (en
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Priority claimed from JP2019234195A external-priority patent/JP6885452B2/en
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Claims (13)

冷凍装置（１）の冷媒回路（４）を構成する冷媒配管であって、
第１配管（２１）と、第２配管（２２）とを備え、
前記第１配管（２１）が、ステンレスからなる配管本体（２１ａ）と、前記配管本体（２１ａ）の管軸方向の端部に設けられかつステンレスとは異なる材料からなる接続管（２１ｂ）とを有し、
前記接続管（２１ｂ）が、前記配管本体（２１ａ）の前記端部から管軸方向へ突出する突出部（２１ｂ１）を有し、
前記第２配管（２２）が、前記接続管（２１ｂ）と同一材料からなり、管軸方向の端部に配置された第２大径部（２２ａ）と、前記第２大径部（２２ａ）よりも径が小さい第２小径部（２２ｂ）と、前記第２大径部（２２ａ）と前記第２小径部（２２ｂ）との間に配置された段差部（２２ｃ）と、を備えており、
前記接続管（２１ｂ）が、前記第２大径部（２２ａ）に挿入され、
前記突出部（２１ｂ１）が、前記段差部（２２ｃ）に接触し、
前記接続管（２１ｂ）の外周面が前記第２大径部（２２ａ）の内周面に接続され、
前記接続管（２１ｂ）と、前記配管本体（２１ａ）とが、第１ろう材（Ｂ１）により接続され、前記接続管（２１ｂ）と、前記第２大径部（２２ａ）とが、第２ろう材（Ｂ２）により接続され、前記第１ろう材（Ｂ１）が、前記第２ろう材（Ｂ２）よりも高い融点を有する、冷媒配管。 A refrigerant pipe that constitutes a refrigerant circuit (4) of a refrigeration system (1),
A first pipe (21) and a second pipe (22),
The first pipe (21) comprises a pipe body (21a) made of stainless steel, and a connection pipe (21b) provided at the axial end of the pipe body (21a) and made of a material different from stainless steel. have
The connection pipe (21b) has a protruding portion (21b1) protruding from the end of the pipe body (21a) in the pipe axial direction,
The second pipe (22) is made of the same material as the connection pipe (21b), and has a second large diameter portion (22a) arranged at an end portion in the pipe axial direction, and the second large diameter portion (22a). and a stepped portion (22c) disposed between the second large diameter portion (22a) and the second small diameter portion (22b). ,
The connection pipe (21b) is inserted into the second large diameter portion (22a),
The projecting portion (21b1) contacts the stepped portion (22c),
The outer peripheral surface of the connecting pipe (21b) is connected to the inner peripheral surface of the second large diameter portion (22a) ,
The connection pipe (21b) and the pipe main body (21a) are connected by a first brazing material (B1), and the connection pipe (21b) and the second large diameter portion (22a) are connected to the second A refrigerant pipe connected by a brazing material (B2), wherein the first brazing material (B1) has a higher melting point than the second brazing material (B2) . 冷凍装置（１）の冷媒回路（４）を構成する冷媒配管であって、
第１配管（２１）と、第２配管（２２）とを備え、
前記第１配管（２１）が、ステンレスからなる配管本体（２１ａ）と、前記配管本体（２１ａ）の管軸方向の端部に設けられかつステンレスとは異なる材料からなる接続管（２１ｂ）とを有し、
前記接続管（２１ｂ）が、前記配管本体（２１ａ）の前記端部から管軸方向へ突出する突出部（２１ｂ１）を有し、
前記第２配管（２２）が、前記接続管（２１ｂ）と主成分が同一の材料からなり、管軸方向の端部に配置された第２大径部（２２ａ）と、前記第２大径部（２２ａ）よりも径が小さい第２小径部（２２ｂ）と、前記第２大径部（２２ａ）と前記第２小径部（２２ｂ）との間に配置された段差部（２２ｃ）と、を備えており、
前記接続管（２１ｂ）が、前記第２大径部（２２ａ）に挿入され、
前記突出部（２１ｂ１）が、前記段差部（２２ｃ）に接触し、
前記接続管（２１ｂ）の外周面が前記第２大径部（２２ａ）の内周面に接続され、
前記接続管（２１ｂ）と、前記配管本体（２１ａ）とが、第１ろう材（Ｂ１）により接続され、前記接続管（２１ｂ）と、前記第２大径部（２２ａ）とが、第２ろう材（Ｂ２）により接続され、前記第１ろう材（Ｂ１）が、前記第２ろう材（Ｂ２）よりも高い融点を有する、冷媒配管。 A refrigerant pipe that constitutes a refrigerant circuit (4) of a refrigeration system (1),
A first pipe (21) and a second pipe (22),
The first pipe (21) comprises a pipe body (21a) made of stainless steel, and a connection pipe (21b) provided at the axial end of the pipe body (21a) and made of a material different from stainless steel. have
The connection pipe (21b) has a protruding portion (21b1) protruding from the end of the pipe body (21a) in the pipe axial direction,
The second pipe (22) is made of the same material as the connecting pipe (21b) as the main component, and has a second large diameter portion (22a) disposed at the end in the pipe axial direction, and the second large diameter portion (22a). a second small diameter portion (22b) smaller in diameter than the portion (22a); a stepped portion (22c) disposed between the second large diameter portion (22a) and the second small diameter portion (22b); and
The connection pipe (21b) is inserted into the second large diameter portion (22a),
The projecting portion (21b1) contacts the stepped portion (22c),
The outer peripheral surface of the connecting pipe (21b) is connected to the inner peripheral surface of the second large diameter portion (22a) ,
The connection pipe (21b) and the pipe main body (21a) are connected by a first brazing material (B1), and the connection pipe (21b) and the second large diameter portion (22a) are connected to the second A refrigerant pipe connected by a brazing material (B2), wherein the first brazing material (B1) has a higher melting point than the second brazing material (B2) . 前記接続管（２１ｂ）と前記第２配管（２２）とが、主成分が同一の異なる材料からなる、請求項２に記載の冷媒配管。 3. The refrigerant pipe according to claim 2, wherein said connecting pipe (21b) and said second pipe (22) are made of different materials having the same main component. 前記接続管（２１ｂ）及び前記第２配管（２２）のそれぞれが、銅、銅合金、アルミニウム、又はアルミニウム合金のいずれかからなる、請求項１～３のいずれか１項に記載の冷媒配管。 The refrigerant pipe according to any one of claims 1 to 3, wherein each of said connecting pipe (21b) and said second pipe (22) is made of copper, copper alloy, aluminum, or aluminum alloy. 前記配管本体（２１ａ）の前記端部と前記第２大径部（２２ａ）とが、管径方向に重複して配置されている、請求項１～４のいずれか１項に記載の冷媒配管。 The refrigerant pipe according to any one of claims 1 to 4, wherein the end portion of the pipe body (21a) and the second large diameter portion (22a) are arranged to overlap in the pipe radial direction. . 前記配管本体（２１ａ）が、第１小径部（２１ａ１）と、この第１小径部（２１ａ１）よりも径が大きい第１大径部（２１ａ２）とを備え、前記接続管（２１ｂ）が、前記第１小径部（２１ａ１）の外周面に設けられる、請求項１～３のいずれか１項に記載の冷媒配管。 The pipe body (21a) includes a first small diameter portion (21a1) and a first large diameter portion (21a2) having a larger diameter than the first small diameter portion (21a1), and the connection pipe (21b) The refrigerant pipe according to any one of claims 1 to 3, provided on the outer peripheral surface of the first small diameter portion (21a1). 前記第２配管（２２）の前記第２小径部（２２ｂ）と、前記配管本体（２１ａ）の前記第１大径部（２１ａ２）とが、同一の外径（Ｄ）を有する、請求項６に記載の冷媒配管。 7. Said second small diameter portion (22b) of said second pipe (22) and said first large diameter portion (21a2) of said pipe body (21a) have the same outer diameter (D). Refrigerant piping described in . 前記第２配管（２２）の前記第２小径部（２２ｂ）と、前記配管本体（２１ａ）の前記第１大径部（２１ａ２）とが、同一の内径を有する、請求項６に記載の冷媒配管。 The refrigerant according to claim 6, wherein the second small diameter portion (22b) of the second pipe (22) and the first large diameter portion (21a2) of the pipe body (21a) have the same inner diameter. Piping. 前記第２配管（２２）の前記第２大径部（２２ａ）の開口が上向きに配置されている、請求項１～８のいずれか１項に記載の冷媒配管。 The refrigerant pipe according to any one of claims 1 to 8, wherein the opening of the second large diameter portion (22a) of the second pipe (22) is arranged upward. 前記第２配管（２２）が、冷媒回路（４）を構成する要素部品（Ｘ）に設けられる、請求項１～９のいずれか１項に記載の冷媒配管。 The refrigerant pipe according to any one of claims 1 to 9, wherein the second pipe (22) is provided in an element part (X) that constitutes the refrigerant circuit (4). 前記要素部品（Ｘ）が圧縮機である、請求項１０に記載の冷媒配管。 11. Refrigerant piping according to claim 10, wherein said component (X) is a compressor. 前記第１配管（２１）が、前記第２配管（２２）と、ステンレス製の他の配管（２３）とを接続する継手を構成している、請求項１～１１のいずれか１項に記載の冷媒配管。 According to any one of claims 1 to 11, wherein the first pipe (21) constitutes a joint connecting the second pipe (22) and another pipe (23) made of stainless steel. refrigerant piping. 請求項１～１２のいずれか１項に記載の冷媒配管（１０Ａ）と、
冷媒回路（４）を構成し、前記冷媒配管（１０Ａ）が接続される要素部品（Ｘ）と、を備えている、冷凍装置。 A refrigerant pipe (10A) according to any one of claims 1 to 12;
A refrigerating device comprising: an element part (X) that constitutes a refrigerant circuit (4) and to which the refrigerant pipe (10A) is connected.
JP2021080648A 2019-07-31 2021-05-11 Refrigerant piping and refrigeration equipment Active JP7477777B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019140943 2019-07-31
JP2019140943 2019-07-31
JP2019234195A JP6885452B2 (en) 2019-07-31 2019-12-25 Refrigerant piping and refrigerating equipment

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Publications (3)

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JP2021121762A JP2021121762A (en) 2021-08-26
JP2021121762A5 true JP2021121762A5 (en) 2022-12-23
JP7477777B2 JP7477777B2 (en) 2024-05-02

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JP2021080648A Active JP7477777B2 (en) 2019-07-31 2021-05-11 Refrigerant piping and refrigeration equipment

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Publication number Priority date Publication date Assignee Title
CN212361095U (en) * 2020-03-18 2021-01-15 浙江盾安人工环境股份有限公司 Pipe fitting connecting structure
CN216204506U (en) * 2021-09-02 2022-04-05 含山瑞可金属有限公司 Knockout and air conditioner for refrigeration
JP7315864B2 (en) * 2021-10-25 2023-07-27 ダイキン工業株式会社 Pressure reducing valve, heat exchanger, air conditioner, and method for manufacturing heat exchanger

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