WO2016065652A1 - Tuyau de raccordement dédié à une conduite de raccordement de fluide frigorigène d'unité intérieure et extérieure d'un appareil de conditionnement d'air bibloc - Google Patents

Tuyau de raccordement dédié à une conduite de raccordement de fluide frigorigène d'unité intérieure et extérieure d'un appareil de conditionnement d'air bibloc Download PDF

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Publication number
WO2016065652A1
WO2016065652A1 PCT/CN2014/090139 CN2014090139W WO2016065652A1 WO 2016065652 A1 WO2016065652 A1 WO 2016065652A1 CN 2014090139 W CN2014090139 W CN 2014090139W WO 2016065652 A1 WO2016065652 A1 WO 2016065652A1
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Prior art keywords
connecting pipe
pipe
length
aluminum alloy
connection pipe
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Ceased
Application number
PCT/CN2014/090139
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English (en)
Chinese (zh)
Inventor
孙海潮
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Individual
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Individual
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Publication date
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Priority to PCT/CN2014/090139 priority Critical patent/WO2016065652A1/fr
Publication of WO2016065652A1 publication Critical patent/WO2016065652A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints

Definitions

  • the present invention relates to only a split air conditioner using an aluminum refrigerant tube, and particularly relates to a split air conditioner dedicated to an indoor unit and an outdoor unit refrigerant connecting line.
  • the basic structure of the currently known split air conditioner is composed of two parts, namely, an indoor unit that is cooled by the refrigerant and an outdoor unit that condenses and releases the refrigerant.
  • the indoor unit and the outdoor unit connect the refrigerant lines into a circulation loop through two refrigerant tubes.
  • the two refrigerant tubes for connecting the indoor and outdoor units are generally copper tubes, and in recent years, copper and aluminum are also used.
  • the welded composite pipe is used as the connecting pipe of the indoor and outdoor machines, but whether the connecting pipe is a copper pipe or a copper-aluminum welded composite pipe, the connection method with the indoor and outdoor machines is to put the two ports of the pipe into the nut, and then the port The flared flared bell mouth is connected to the external thread on the connecting pipe of the indoor and outdoor shut-off valve through a nut, and the nut is pressed against the port of the shut-off valve connecting pipe to form a sealing butt joint.
  • the crimp connection method has high requirements on the connection technology, and the connection portion is a port of the nozzle.
  • connection contact surface is small, and the two ports are likely to cause radial relative displacement, thereby causing a misalignment connection, which is prolonged in use and prone to leakage.
  • split-type air conditioners will leak a certain amount of refrigerant every year, and need to be added regularly, otherwise the cooling capacity will continue to drop, which is based on the technical shortcomings brought by this kind of connection.
  • the copper alloy nut is still required for the compression joint nut of the copper-aluminum welded composite pipe, otherwise galvanic corrosion will occur, and the purpose of replacing the copper connecting pipe with the all-aluminum aluminum alloy connecting pipe cannot be achieved, and the prior art also has a stainless steel.
  • the casing is a method of spirally connecting the shut-off valve connecting pipe with the refrigerant connecting pipe of the indoor and outdoor machines, but the stainless steel is also contaminated in some special environmental conditions, such as containing heterogeneous metal dust, containing acid, alkali, salt and the like. Rusted, long-term use, the same problem of refrigerant leakage.
  • the technical problems people have been eager to solve.
  • the object of the present invention is specifically designed for the above technical problems, a connecting pipe specially designed for the refrigerant connecting pipe of the indoor air conditioner of the split air conditioner, and the copper aluminum connecting pipe is replaced by the all-aluminum aluminum alloy connecting pipe as the indoor and outdoor While the machine connecting pipe has the advantage of greatly reducing the cost, a connection method different from the existing split air-conditioning connecting pipe and the indoor/outdoor shut-off valve connecting pipe is adopted, so that it is connected with the indoor and outdoor machine shut-off valve connecting pipe.
  • the joint sealing performance is improved in quality, eliminating the disadvantage that the connecting pipe is easy to leak after long-term use.
  • a connecting pipe dedicated to a refrigerant connecting pipe of an indoor and outdoor unit of a split air conditioner is an all-aluminum aluminum alloy connecting pipe, and the two pipe ends of the aluminum alloy connecting pipe have an external thread, and the aluminum alloy is connected
  • the tube and the shut-off valve connecting tube are connected through a tube for the internal threaded sleeve, and the sleeve is a thread-sized internal thread sleeve, wherein the sleeve is a plastic sleeve.
  • the invention can also be implemented in such a way that:
  • the length of the plastic sleeve is smaller than the length of the externally threaded pipe section on the cut-off valve connecting pipe of the length of the externally threaded pipe section on the end of the aluminum alloy connecting pipe and less than or equal to twice.
  • the invention can also be implemented in such a way that:
  • the length of the plastic sleeve is greater than the length of the external threaded pipe section on the end of the aluminum alloy connecting pipe and the length of the externally threaded pipe section on the shutoff valve connecting pipe is twice or more.
  • the invention can also be implemented in such a way that:
  • the length of the plastic sleeve is greater than the length of the externally threaded pipe section on the end of the aluminum alloy connecting pipe and less than twice The length of the externally threaded pipe section on the connecting pipe connection pipe.
  • the plastic sleeve is made of a specific plastic material, such as PTFE engineering plastics, which overcomes the limitation that the stainless steel sleeve will rust under certain special environmental conditions, and greatly expands the casing connection stop valve connecting pipe. And the application range of aluminum alloy connecting pipe.
  • the plastic sleeve is matched with the external thread on the end of the aluminum alloy connecting pipe. The technical emphasis is on the sealing performance, and the tensile strength is not high.
  • the aluminum alloy connecting pipe is a thin-walled pipe, so fine teeth should be used as much as possible. Threaded connection.
  • the plastic sleeve is a threaded internal threaded sleeve.
  • the internal thread of the plastic sleeve and the external thread on the end of the aluminum alloy connecting pipe should be customized according to the external thread on the existing shut-off valve connecting pipe.
  • the internal thread of the plastic sleeve is used to customize the external thread on the stop valve connection tube and the end of the aluminum alloy connection tube.
  • the length of the plastic sleeve is smaller than the length of the externally threaded pipe section on the end of the aluminum alloy connecting pipe and is less than or equal to twice the length of the externally threaded pipe section on the connecting pipe connecting pipe, and the length here is less than only slightly smaller, such as Less than 2mm, in order to ensure that the thread on the shut-off valve is completely screwed into the plastic sleeve, the connection length between the plastic sleeve and the aluminum alloy connecting tube and the shut-off valve connecting tube on both sides is approximately equal, and the sealing performance is equal; the length of the plastic sleeve When the length of the externally threaded pipe section on the connecting pipe connecting pipe is greater than or equal to twice the length of the externally threaded pipe section on the end of the aluminum alloy connecting pipe, the length here is greater than only slightly larger than 2 mm, in principle, After the plastic sleeve is connected with the shut-off valve connecting pipe and the aluminum alloy connecting pipe, a small gap is left between the connecting pipe connecting pipe
  • the length of the plastic sleeve can also be smaller than the length of the aluminum alloy connecting pipe end.
  • the length of the plastic sleeve, the length of the external thread on the connecting pipe of the shut-off valve and the length of the external thread on the end of the aluminum alloy connecting pipe and the relative length between them Therefore, it should be ensured that they can be fully screwed together, and each adjacent connecting pipe section has a certain connection length without leakage, and it can ensure that the shut-off valve connecting pipe and the aluminum alloy connecting pipe do not directly contact to eliminate electrification. Corrosion hazards prevail.
  • the external thread on the end of the aluminum alloy connecting pipe and the external thread on the connecting pipe of the shut-off valve are coated with a liquid raw material tape for sealing connection.
  • the liquid raw material tape is a general-purpose pipe sealant.
  • the liquid raw material tape maintains a liquid state when it comes into contact with air. When it penetrates into the metal pipe thread, it reacts and solidifies by itself. The solidified material fills the entire thread gap, and each spiral pattern is actually a sealing ring. Its excellent sealing performance and corrosion resistance, aging resistance and pressure resistance performance far exceed the requirements of the indoor and outdoor refrigerant connecting pipe to the pipeline connection. Applying it to the connection of the refrigerant pipe will completely eliminate the shortcomings of refrigerant leakage.
  • connection mode of the invention is not only for the purpose of connecting the shut-off valve connecting pipe and the aluminum alloy connecting pipe, but more importantly, it also has the effect of eliminating the contact between the copper-aluminum connecting pipe by the contact.
  • the effect of leakage of galvanic corrosion is only possible, so that it is possible to replace the copper connecting pipe with the all-aluminum alloy pipe as the refrigerant connecting pipe of the indoor and outdoor units of the split type air conditioner.
  • the invention can also be applied to the connection of the shut-off valve connecting pipe to the aluminum alloy pipe.
  • the present invention has the following main features:
  • the invention is an all-aluminum alloy tube, and the manufacturing cost is much lower than the existing copper tube copper nut connecting tube.
  • the invention completely eliminates the disadvantage that the refrigerant of the existing air-conditioning connecting pipe is easy to leak.
  • the invention can be directly applied to the existing split type air conditioner, and does not need to make any modification to the existing split type air conditioner, and has excellent interchangeability with the existing split type air conditioner connecting pipe.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Fig. 1 is the shut-off valve connecting pipe
  • 2 is the connecting pipe connecting pipe external thread
  • 3 is plastic bushing
  • 4 is the threaded connection of the shut-off valve connecting pipe and the plastic bushing
  • 5 is the plastic bushing internal thread
  • 6 is aluminum alloy
  • the connecting pipe is screwed to the plastic sleeve
  • 7 is an external connecting thread of the aluminum alloy connecting pipe
  • 8 is an aluminum alloy connecting pipe
  • 9 is a liquid raw material belt.
  • the shut-off valve connecting pipe 1 is a shut-off valve connecting pipe for connecting the connecting pipe on the indoor and outdoor air conditioners
  • 2 is an external connecting thread of the shut-off valve connecting pipe
  • the aluminum alloy connecting pipe 8 is the refrigerant connecting pipe of the present invention
  • the external threaded pipe section 7 on one end of the aluminum alloy connecting pipe 8 is evenly coated with the liquid raw material belt 9, and then the plastic casing 3 is screwed into the aluminum alloy connecting pipe 8, and at this time, the plastic casing 3 and the aluminum alloy are ground.
  • the plastic sleeve 3 can be completely screwed into the aluminum alloy connecting pipe 8 until the plastic casing cannot rotate.
  • the aluminum alloy connecting pipe external thread 7 is completely rotated into the plastic sleeve 3, and then the liquid raw material belt 9 is coated on the external thread 2 of the shut-off valve connecting pipe 1 to be connected, and the other port of the plastic sleeve 3 is cut off.
  • the nozzles of the valve connecting pipe 1 are aligned and overlapped, and the aluminum alloy connecting pipe 8 is clamped, and the plastic bushing 3 is rotated out of the aluminum alloy connecting pipe 8 until the outer connecting thread 2 of the shut-off valve connecting pipe is rotated into the length of the plastic sleeve 3.
  • the length of the external thread 7 of the aluminum alloy connecting pipe which is rotated out of the aluminum alloy connecting pipe 8 with the plastic sleeve 3 is as large as equivalent, since the length of the plastic sleeve 3 is larger than the length of the external thread 7 of the aluminum alloy pipe, according to the present
  • the connecting valve connecting pipe 1 and the aluminum alloy connecting pipe 8 which are connected by the method of the embodiment are absolutely not in direct contact, thereby eliminating the problem of galvanic corrosion caused by the connection of the copper-aluminum pipe, when the length of the plastic casing 3 is When the length of the external thread 7 of the aluminum alloy connecting pipe is less than or equal to, the plastic sleeve 3 cannot be completely screwed into the aluminum alloy connecting pipe 8 when it is screwed into the aluminum alloy connecting pipe 8, and a small length of pipe is required.
  • the pipe section thus ensures that the shut-off valve connecting pipe 1 and the aluminum alloy connecting pipe 8 which are connected in accordance with the method of the present embodiment are not in direct contact.
  • the other end of the aluminum alloy connecting pipe 8 is connected to a corresponding shut-off valve connecting pipe on the indoor and outdoor machines by this method.
  • the prior art also has a method of sealing the joint by a sealant, but only in combination with the connection method of the present invention, the sealing performance of the sealant can truly achieve the effect of preventing refrigerant leakage.
  • the end of the air-conditioning aluminum alloy connecting pipe 8 is made to have an external thread, and a certain concentrated stress is generated at the joint of the threaded pipe section and the light pipe.
  • the bending property here is weak, but since the joint portions of the present invention are all located close to the fixed
  • the fixed stop valve is connected to the pipe and is a fine thread. After the invention is connected and installed, the bending requirements of the pipe section of the joint are not high, so the normal use is not affected.
  • the present invention can also use the shut-off valve connecting pipe 1 as the same connection as the aluminum alloy connecting pipe 8, and the two connecting methods are essentially the same.
  • the liquid raw material tape 9 on the thread does not solidify in the air, and curing occurs only when the threads are connected to each other to isolate the air.
  • the initial curing time is several tens of minutes, and the above aluminum alloy connecting pipe and the cut-off
  • the connection of the valve connecting pipe can be completed within a few minutes. Therefore, the connection mode of the present invention does not affect the excellent sealing performance of the liquid raw material tape 9 after connection.
  • the joint can be appropriately heated by the burner after the connection and installation, and the curing treatment can be accelerated.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Pressure Members (AREA)

Abstract

L'invention concerne un tuyau de raccordement dédié à une conduite de raccordement de fluide frigorigène d'unité intérieure et extérieure d'un appareil de conditionnement d'air bibloc, comprenant un tuyau de raccordement de fluide frigorigène, le tuyau de raccordement de fluide frigorigène étant un tuyau de raccordement en alliage d'aluminium (8), deux extrémités du tuyau de raccordement en alliage d'aluminium (8) étant pourvues d'un filetage externe (7), le tuyau de raccordement en alliage d'aluminium (8) et un tuyau de raccordement (1) de robinet d'arrêt étant en communication par l'intermédiaire d'un tuyau de revêtement (3) qui renferme un filetage interne, le tuyau de revêtement (3) étant un tuyau de revêtement à filetage interne d'une spécification de filetage, et le tuyau de revêtement (3) est un tuyau de revêtement en plastique. La longueur du tuyau de revêtement (3) est supérieure à la longueur d'une section de tuyau à filetage externe au niveau de l'extrémité du tuyau de raccordement en alliage d'aluminium (8) et est inférieure ou égale au double de la longueur de la section de tuyau à filetage externe sur le tuyau de raccordement (1) de robinet d'arrêt. Le tuyau de raccordement de fluide frigorigène est un tuyau de raccordement tout en alliage d'aluminium, le coût de fabrication est considérablement inférieur à celui du tuyau de raccordement actuel pour un tuyau et un écrou en cuivre, et l'inconvénient de fuite de fluide frigorigène facile provoqué par le tuyau de raccordement d'appareil de conditionnement d'air actuel est supprimé.
PCT/CN2014/090139 2014-11-02 2014-11-02 Tuyau de raccordement dédié à une conduite de raccordement de fluide frigorigène d'unité intérieure et extérieure d'un appareil de conditionnement d'air bibloc Ceased WO2016065652A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/090139 WO2016065652A1 (fr) 2014-11-02 2014-11-02 Tuyau de raccordement dédié à une conduite de raccordement de fluide frigorigène d'unité intérieure et extérieure d'un appareil de conditionnement d'air bibloc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/090139 WO2016065652A1 (fr) 2014-11-02 2014-11-02 Tuyau de raccordement dédié à une conduite de raccordement de fluide frigorigène d'unité intérieure et extérieure d'un appareil de conditionnement d'air bibloc

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WO2016065652A1 true WO2016065652A1 (fr) 2016-05-06

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PCT/CN2014/090139 Ceased WO2016065652A1 (fr) 2014-11-02 2014-11-02 Tuyau de raccordement dédié à une conduite de raccordement de fluide frigorigène d'unité intérieure et extérieure d'un appareil de conditionnement d'air bibloc

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1851330A (zh) * 2006-05-26 2006-10-25 广东科龙电器股份有限公司 一种使用铝制制冷管路的分体式空调器
CN101008512A (zh) * 2007-01-30 2007-08-01 孙海潮 一种使用铝制制冷剂管路的分体式空调
CN101328998A (zh) * 2008-07-25 2008-12-24 孙海潮 一种专用于分体空调室内外机制冷剂连接管路的连接管
EP2474768A2 (fr) * 2011-01-06 2012-07-11 LG Electronics Inc. Structure de connexion de tuyaux réfrigérants pour climatiseur
CN102840630A (zh) * 2011-06-23 2012-12-26 孙海潮 一种空调室内机与室外机制冷剂连接管路的连接管
RU2513937C1 (ru) * 2013-03-13 2014-04-20 Геннадий Алексеевич Копылов Способ герметизации стесненной прокладкой
CN104676158A (zh) * 2013-11-29 2015-06-03 常州校果信息服务有限公司 一种空调连接管

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1851330A (zh) * 2006-05-26 2006-10-25 广东科龙电器股份有限公司 一种使用铝制制冷管路的分体式空调器
CN101008512A (zh) * 2007-01-30 2007-08-01 孙海潮 一种使用铝制制冷剂管路的分体式空调
CN101328998A (zh) * 2008-07-25 2008-12-24 孙海潮 一种专用于分体空调室内外机制冷剂连接管路的连接管
EP2474768A2 (fr) * 2011-01-06 2012-07-11 LG Electronics Inc. Structure de connexion de tuyaux réfrigérants pour climatiseur
CN102840630A (zh) * 2011-06-23 2012-12-26 孙海潮 一种空调室内机与室外机制冷剂连接管路的连接管
RU2513937C1 (ru) * 2013-03-13 2014-04-20 Геннадий Алексеевич Копылов Способ герметизации стесненной прокладкой
CN104676158A (zh) * 2013-11-29 2015-06-03 常州校果信息服务有限公司 一种空调连接管

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