CN103629456A - Connecting nut special for refrigerating fluid connecting line of split-type air conditioner - Google Patents

Connecting nut special for refrigerating fluid connecting line of split-type air conditioner Download PDF

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Publication number
CN103629456A
CN103629456A CN201310164743.8A CN201310164743A CN103629456A CN 103629456 A CN103629456 A CN 103629456A CN 201310164743 A CN201310164743 A CN 201310164743A CN 103629456 A CN103629456 A CN 103629456A
Authority
CN
China
Prior art keywords
nut
joint
taper hole
tube
sealing
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
CN201310164743.8A
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Chinese (zh)
Inventor
孙海潮
Original Assignee
孙海潮
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 孙海潮 filed Critical 孙海潮
Priority to CN201310164743.8A priority Critical patent/CN103629456A/en
Publication of CN103629456A publication Critical patent/CN103629456A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F16L19/028Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
    • F16L19/0283Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall and having a bell-mouthed shape
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26Refrigerant piping
    • F24F1/32Refrigerant piping for connecting the separate outdoor units to indoor units

Abstract

A connecting nut special for a refrigerating fluid connecting line of a split-type air conditioner comprises a connector, an outer frustum arranged on the connector, a nut inner taper hole and a connecting pipe horn opening and is characterized in that a horn groove is formed in the nut inner taper hole, the nut inner taper hole is extruded by the outer frustum of the connector so that metal rigidity seal between the outer frustum of the connector and the nut inner taper hole can be achieved, and the connecting pipe horn opening is extruded between the outer frustum of the connector and the horn groove in the nut inner taper hole so that horn groove seal can be achieved. The connecting nut has the advantages of being high in airtightness used in all refrigerating fluid systems, capable of being used for connecting a connecting pipe made of dissimilar materials and capable of achieving the complete interchangeability with a connecting nut in the prior art.

Description

A kind of attaching nut who is exclusively used in split-type air conditioner refrigeration agent connecting pipeline
Technical field
The invention belongs to air-conditioning technical field, only relate to a kind of attaching nut of air-conditioning refrigerant connecting pipeline, particularly only relate to a kind of attaching nut who is exclusively used in split-type air conditioner indoor set and outdoor unit refrigeration agent connecting pipeline.
Background technique
Known split-type air conditioner is that the joint connecting on indoor set and outdoor unit by two refrigeration agent connecting tubes connects into a circulation loop by refrigerant line at present.In prior art, for connecting these two refrigeration agent connecting tubes of indoor and outdoor machine, be generally copper pipe, also there is in recent years employing copper-aluminium welding pipe, copper aluminum composite pipes, aluminum pipe, steel pipe is as the connecting pipeline of indoor and outdoor machine, but what no matter adopt is any metal tube, it is bell mouth expanding with the most frequently used connecting means of indoor set and outdoor unit and is connected.It is that tube opening is packed into attaching nut that bell mouth expanding connects, then tube opening is expanded into horn mouth, by attaching nut, be connected with indoor and outdoor machine joint, nut internal taper hole by nut bottom is squeezed in horn mouth on the outer frustum of joint and forms and be tightly connected, during connection, crush seal is connecting tube horn mouth, connecting tube horn mouth is clamped between nut internal taper hole and the outer frustum of joint, and nut internal taper hole is with the outer frustum of joint without directly contacting, and this is the technical characteristics that bell mouth expanding connects.Bell mouth expanding Placement is to bell mouth expanding, connecting tube material, and the connection requests such as grasp that apply moment size when attaching nut connects are higher, slightly improper, will cause and be tightly connected unsuccessfully.Even if desirable installation connects, can not meet the more sealing requirements of high pressure system, generally, connect improper or just with the time, grown easy generation leakage, in fact, split-type air conditioner often all can leak a certain amount of refrigeration agent every year, need regular replenishment, otherwise refrigerating capacity can constantly decline, feature in this kind of linkage structure causes just, the Application and Development of new refrigerant system in recent years particularly, as R410a, R32, R290 refrigerant system etc., higher to sealing requirements, R410a, in the technical regulation of R32 refrigerant system, just bell-mouthed technique is made, withstand voltage properties has been made requirements at the higher level, R290 refrigerant system has clearly stipulated that detachable bell mouth expanding Placement can not be used.Therefore, original bell mouth expanding Placement can not meet R410a, R32, and the high sealing of the refrigerant system that R290 etc. are new has required.The connecting tube that bell mouth expanding connects need to be through nut sleeve in nut light wall trepanning, after connecting, between pipe itself and nut light wall trepanning, there is nut sleeve interporal lacuna, thereby horn mouth and the connecting part of connecting tube are that horn mouth is torn curved mouth open and in fact directly communicated with the external world, horn mouth is torn curved mouth open constantly among ambient atmosphere, be subject to vitiated air in atmosphere, the erosion of various sewage, during air-conditioning work, condensed water agglutinates in connecting tube joint, condensed water will be penetrated into horn mouth by gap and tear curved mouth open, cause corrosion, year in and year out, while having eroded to a certain degree, horn mouth is torn curved mouth open can produce leakage because of corrosion failure, for joint and connecting tube, be while being connected between dissimilar metal especially, many again a kind of electrochemical corrosion destroy, corrosion failure is particularly evident, as in copper sleeve is connected with the bell mouth expanding of aluminium connecting tubes, copper sleeve contacts with the direct crimping of aluminium connecting tubes horn mouth, after connecting, electrochemical corrosion between copper aluminium just exists all the time, horn mouth is torn curved mouth open the most easily because of electrochemical corrosion rupture and leakage, therefore, the Placement of bell mouth expanding is to be not directly applied to being connected of copper sleeve and aluminium connecting tubes, why Here it is there will be a kind of copper-aluminium welding pipe in recent years, be that part broad in the middle is aluminum pipe, but a bit of copper pipe is welded at the two of having to, retain copper pipe and pack into nut, bell mouth expanding, the reason being connected with copper sleeve.In addition the state in certain vibration always during pipe connection work, pipe itself also can produce because of the interference of external environment and rock loosening possibility, due to gapped between pipe itself after connecting and nut trepanning, conventionally the nut light cinclides that is socketed connecting tube in nut is long only for about 3mm, therefore this gap is short and tear curved mouth open with connecting tube horn mouth and be connected, any vibration that causes connecting tube, rock and all can be delivered to horn mouth almost undampedly and tear open in curved mouth, these factors have been aggravated horn mouth and have been torn breaking of curved mouth open and produce leakage, time has been grown and also can cause that nut is tired loosening, when there is tired becoming flexible in nut, horn mouth sealing place can be because of extruding force reduce to produce leakage, in addition, bell mouth expanding connects only in horn mouth place generation sealability, for being singly tightly connected, once producing, horn mouth sealing leaks, just mean that connection pipe fitting loses sealability.Therefore, finding a kind of connection sealing can be higher, and sealability is more reliable, and the anti-loosening superior performance of corrosion protection vibrationproof can be directly used in that pipeline between dissimilar metal connects and without the attaching nut of electrochemical corrosion, has just become people to thirst for the technical barrier that solves always.
Summary of the invention
The problem that the Placement that object of the present invention connects for above-mentioned refrigerant line bell mouth expanding just exists, on the basis connecting at bell mouth expanding, and the attaching nut of a kind of indoor apparatus of air conditioner providing specially and outdoor unit refrigeration agent connecting pipeline, thoroughly solved the problem that above-mentioned bell mouth expanding connecting means exists: connection sealing can be lower, sealing reliability is poor, not corrosion protection, the anti-loosening property of vibrationproof is low, the problem not directly connecting for pipeline between dissimilar metal.
The object of the invention is to realize in the following manner: a kind of attaching nut who is exclusively used in split-type air conditioner refrigeration agent connecting pipeline, comprise joint, outer frustum on joint, nut internal taper hole and connecting tube horn mouth, it is characterized in that: nut internal taper hole is provided with flared channels, the outer frustum extruding of joint nut internal taper hole is realized the metal hard-sealing between the outer frustum of joint and nut internal taper hole, and connecting tube horn mouth is squeezed between the flared channels on the outer frustum of joint and nut internal taper hole and realizes flared channels sealing.
Object of the present invention can also realize by such mode:
1, between nut light cinclides and connecting tube, apply metal anaerobic adhesive.
2, nut light cinclides length is greater than 6mm.
On nut internal taper hole, offer flared channels, only accounted for a nut internal taper hole part of flared channels, remaining part nut internal taper hole still exists, when outside joint, frustum extruding horn mouth is squeezed in horn mouth flared channels and carries out connecting tube horn mouth and be squeezed in joint outside that the flared channels between the flared channels on frustum and nut internal taper hole seals, the outer frustum of joint will be expressed to the nut internal taper hole of remaining part, realize the metal hard-sealing between the outer frustum of joint and tapered sleeve internal taper hole, flared channels sealing has formed double-sealing with metal hard-sealing, connect with original loudspeaker are connected be singly tightly connected and compare, many one deck sealings ensure, improved sealing reliability.Conventionally bell mouth expanding connection is applied in thin-walled, in the connection of the connecting tube that quality is softer, the bell-mouthed bearing capacity that connecting tube expands becomes more weak because of enlarging, this is also the lower main cause of horn mouth seal and pressure bearing ability, but the material of the outer frustum of joint and tapered sleeve internal taper hole is harder, bearing capacity is stronger, the sealability of the metal hard-sealing between the outer frustum of joint and tapered sleeve internal taper hole is sealed far above horn mouth, thereby flared channels sealing and the sealability that metal hard-sealing forms double-sealing are greatly improved, more than generally can reaching 20MPa, the seal and pressure bearing ability that surpasses original bell mouth expanding connection far away.The space size of flared channels is certain, horn mouth is placed in the fixing flared channels of space size, when crush seal, the softer horn mouth expansive space of quality is just limited in the space of flared channels, stressed larger, during extrusion-deformation, be extruded just more closely knitly, and there will not be the phenomenon of the excessive pressure break loudspeaker of original bell mouth expanding coupling torque, thereby improved the sealability of horn mouth sealing and the reliability of connection.The degree of depth of flared channels of the present invention should be close with connecting tube wall thickness, flared channels length is guaranteeing to surpass 1mm above in the situation that, take account for respective nut internal taper hole cone chamfer length 2/3rds as good, connecting tube horn mouth length is determined according to the flared channels length on respective nut internal taper hole, so that horn mouth is placed in flared channels completely.Conventionally connecting tube quality is softer than the outer frustum of joint and nut internal taper hole material, horn mouth diminishes because of enlarging density, to become softer, easily deformable during extruding, during the invention process, suggestion is to protrude flared channels 0.1 to 0.4mm Gao Weijia after horn mouth is placed in flared channels by flared channels depth design, like this, when being tightly connected, what first seal is flared channels sealing, is then the synchronous sealed of metal hard-sealing and flared channels sealing, just can guarantee that every kind of sealing can reach optimum efficiency.During connection, also can adopt the mutual extrusion-deformation hardness of way adjustment at the sealing place pad seal washer of metal hard-sealing and flared channels sealing to reach more preferably sealing.When bell mouth expanding connects, connecting tube will first be set in nut, between connecting tube and nut light cinclides, there is cover interporal lacuna, by applying metal anaerobic adhesive to gap shutoff between nut light cinclides and connecting tube, horn mouth sealing and metal hard-sealing and extraneous communicating have been completely cut off, thoroughly eliminated extraneous moisture, sewage, the impact of curved mouth is torn in condensed water and vibration open on horn mouth, the necessary condition that electrochemical corrosion occurs is will be in wet air, among water, completely cut off and the communicating of the external world, electrochemical corrosion lose necessary condition, also with regard to thorough elimination when joint is connected with dissimilar metal connecting tube, can produce the problem of electrochemical corrosion.The length of nut light cinclides, needs depending on connecting sealing during practice.The gap of nut light cinclides and connecting tube seals by metal anaerobic adhesive, when shutoff communicates with the external world, metal anaerobic adhesive can provide a powerful anti-dismounting force moment to nut light cinclides, the anti-dismounting force moment providing can be by adjusting the length of long nut light cinclides to tune up, even as big as till meeting Anti-dismantling that some special seals connect and requiring, meanwhile, also can effectively play the effect of vibration damping damping, more than during enforcement, nut light cinclides length should be greater than 6mm, to guarantee that metal anaerobic adhesive is to the plugging effect in gap and antihunt action.The present invention is except being provided with flared channels and nut light cinclides length need be greater than 6mm with upper outside on nut internal taper hole, all the other structures are identical with the attaching nut of existing split-type air conditioner refrigeration agent connecting pipeline, thus with prior art in attaching nut there is absolute interchangeability.Attaching nut of the present invention can adopt stainless steel, alloyed steel, copper material, the metallic material such as aluminium are made, by the present invention, to be applied in joint be dissimilar materials with connecting tube while being connected, and nut should be take stainless steel material as good, and stainless steel is non-active material, electrochemical reaction between being connected with dissimilar metal extremely a little less than, almost negligible.
The present invention can put seal ring between frustum outside joint outside thread and joint, by pressing straddle type to push to seal ring herein, the sealing of connecting pipeline is played to the effect of further raising sealability, meanwhile, after seal ring is compressed on its relevant position, can produce an elastic force effect, effectively provide to stop to connect loosening moment.The present invention can apply metal anaerobic adhesive and provide high anti-dismounting force moment for connecting in joint and nut thread joint, makes to connect to have had the loosening ability of more reliable anti-connection, meanwhile also can play seal action.Apply metal anaerobic adhesive, the anti-dismounting force moment of increase is nut with more than the several times that are threaded of joint, may dismantle hardly under normal circumstances, thereby become possibility for being applied on the R290 refrigerant system that requires non-removable connecting tube to connect.The double-sealing design of metal hard-sealing of the present invention and flared channels sealing, add seal ring, the auxiliary seal of metal anaerobic adhesive, these four kinds of sealings provide when far surpassing original bell mouth expanding connection sealability, all can provide Anti-dismantling moment and damping effect for connecting.The Anti-dismantling moment providing is enough to meet the Anti-dismantling requirement of R290 refrigerant system to Placement.
Owing to having adopted technique scheme, the present invention has following main feature:
1, the present invention can be in the connection technique being connected with bell mouth expanding, and connection request, in the identical situation of link cost, is realized pressure-bearing and surpassed more than 20MPa being tightly connected.
2, the present invention is connected with the spiral that can apply maximum moment within the scope of joint screw thread strength at nut, makes connection become convenient, and easily, reliable, the disposable power that connects into greatly improves.
3, the present invention connects hermetic unit and extraneous thoroughly isolation, to can be applicable to connecting tube be dissimilar metal with joint is connected and without the problem of electrochemical corrosion, thereby for replacing expensive connecting tube, connecting tube cheaply becomes possibility, be enough to meet R410a, R32, the working condition requirement of the refrigerant system that R290 etc. are new.
4, the present invention is that double seal connects, double seal be connected hermetic unit and make to be connected the anti-loosening performance of vibrationproof with extraneous isolation and increase, connection reliability greatly improves.
5, the attaching nut on the present invention and existing air-conditioning has interchangeability completely, can not change under the prerequisite of existing joint structure, replaces existing attaching nut.
Accompanying drawing explanation
Figure of description 1 is linkage structure schematic diagram of the present invention.
Figure of description 2 is attaching nut's structural representations of the present invention. ??
embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Attached middle school 1 is joint, and 2 for being threaded, and 3 is nut, 4 nut internal taper holes, 5 is metal hard-sealing, 6 is horn mouth and flared channels sealing, 7 is horn mouth, 8 is the outer frustum of joint and horn mouth sealing, and 9 tear curved mouth open for horn mouth, and 10 is nut and connecting tube gap, 11 is connecting tube, 12 is nut thread hole, and 13 is flared channels, and 14 is nut light cinclides.
Embodiment: Fig. 1 is linkage structure schematic diagram of the present invention.In Fig. 1,1 is joint, in Fig. 1,3 is nut of the present invention, by attaching nut 3, be sleeved on connecting tube 11, at connecting tube pipe end bell mouth expanding 7, then on connecting tube 11 outer walls near 7 of horn mouths, apply metal anaerobic adhesive, gluing length is equivalent to the length of nut light cinclides 14, gently draw connecting tube 11, horn mouth 7 is moved in the flared channels 13 being placed on nut internal taper hole 4 and till being close to as much as possible, gently be pulled through and in journey, need left rotation and right rotation attaching nut 3, the metal anaerobic adhesive applying on connecting tube 11 outer walls is evenly distributed in the connecting tube gap 10 of nut light cinclides 14 and connecting tube 11, then the nut thread hole 12 on attaching nut 3 being threaded connection to 2 is connected with the upper outside thread helix of joint 1, until feel is stubborn motionless, finally by spanner, nut 3 is applied to moment, until twist motionless nut 3, connection completes, the present invention can fitted seal circle and the use of metal anaerobic adhesive, be applied in sealing and the higher connection of anti-loosening requirement.Using method is, applies metal anaerobic adhesive and between frustum, put seal ring outside being threaded outside joint outside thread and joint, and all the other connecting means are identical with above-mentioned implementation methods.Increased seal ring and metal anaerobic adhesive, can play the anti-loosening effect of further sealing and fixing, also can play and together with horn mouth, tear horn mouth open curved mouth and be hedged off from the outer world, kept it not weather, alleviated influence of vibration and improve the effect of expanding dismounting force moment.For the material of seal ring and the model of anaerobic adhesive, the hydrogenation nitrile rubber seal ring of the resistance to refrigerant system of recommend adoption of the present invention and 554 metal anaerobic adhesives.Metal hard-sealing 5 is the crush seal between the outer frustum of joint and nut internal taper hole 4, and 8 is the crush seal between the outer frustum of joint and horn mouth, and 6 is the sealing between horn mouth and flared channels, and 8 and 6 have formed flared channels sealing.Accompanying drawing 2 is attaching nut's structural representations of the present invention, and wherein 4 is nut internal taper hole, and flared channels 13 is opened on nut internal taper hole 4 just.After having connected by joint 1, nut 3, the connection connecting part of connecting tube 11 puts in addition further isolated protection to external world of heat-shrinkable T bush, remarkable to connecting effective sealing effect steady in a long-term.The diameter of nut light cinclides 14 only needs to be slightly larger than connecting tube 11 external diameters, as long as can meet, packs into connecting tube 11, advises that both phase differences are controlled in 0.1mm for good, so that metal anaerobic adhesive seal plug nut and connecting tube gap 10 reach optimal effect.
Air-conditioning of the present invention is air regulator, comprises by refrigerant system air is carried out to the device element that energy shifts adjusting, comprises domestic air conditioning, central air-conditioner, car air conditioner, heat pump water heater etc.

Claims (3)

1. an attaching nut who is exclusively used in split-type air conditioner refrigeration agent connecting pipeline, comprise joint, outer frustum on joint, nut internal taper hole and connecting tube horn mouth, it is characterized in that: nut internal taper hole is provided with flared channels, the outer frustum extruding of joint nut internal taper hole is realized the metal hard-sealing between the outer frustum of joint and nut internal taper hole, and connecting tube horn mouth is squeezed between the flared channels on the outer frustum of joint and nut internal taper hole and realizes flared channels sealing.
2. the attaching nut of refrigeration agent connecting pipeline according to claim 1, is characterized in that: between nut light cinclides and connecting tube, apply metal anaerobic adhesive.
3. the attaching nut of refrigeration agent connecting pipeline according to claim 1, is characterized in that: the large 6mm of nut light cinclides length.
CN201310164743.8A 2013-05-08 2013-05-08 Connecting nut special for refrigerating fluid connecting line of split-type air conditioner Pending CN103629456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310164743.8A CN103629456A (en) 2013-05-08 2013-05-08 Connecting nut special for refrigerating fluid connecting line of split-type air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310164743.8A CN103629456A (en) 2013-05-08 2013-05-08 Connecting nut special for refrigerating fluid connecting line of split-type air conditioner

Publications (1)

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CN103629456A true CN103629456A (en) 2014-03-12

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015117274A1 (en) * 2014-02-09 2015-08-13 孙海潮 Connection screw nut for dedicated use in split air conditioning refrigerant connection pipelines
CN105276317A (en) * 2015-11-20 2016-01-27 朱德伟 Novel pressure hose and connecting component thereof
WO2016065648A1 (en) * 2014-11-01 2016-05-06 孙海潮 Pipe fitting for pipeline connection
WO2016065651A1 (en) * 2014-11-01 2016-05-06 孙海潮 Pipe fitting for pipeline connection
CN106402530A (en) * 2016-10-31 2017-02-15 北京宇航系统工程研究所 Reusable sealing connection structure
WO2019042269A1 (en) * 2017-08-28 2019-03-07 艾默生环境优化技术(苏州)有限公司 Sealed connection structure, functional component, thermal expansion valve, and system
CN109630251A (en) * 2018-11-21 2019-04-16 东风汽车集团有限公司 One kind being used for the anti-freeze pressure difference pipe structure of exhaust system and exhaust system, automobile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2801898B2 (en) * 1995-09-23 1998-09-21 三星電子株式会社 Copper tube connection equipment
CN201014091Y (en) * 2007-03-28 2008-01-30 珠海格力电器股份有限公司 Installation positioning apparatus of air conditioner inside and outside machine connecting pipe
CN101504093A (en) * 2008-02-05 2009-08-12 乐金电子(天津)电器有限公司 Indoor and outdoor coolant tubing connector of air conditioner
US20120049512A1 (en) * 2010-09-01 2012-03-01 Hayes Jr Frank F Flare fittings with circumferential sleeve for improved high pressure seal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2801898B2 (en) * 1995-09-23 1998-09-21 三星電子株式会社 Copper tube connection equipment
CN201014091Y (en) * 2007-03-28 2008-01-30 珠海格力电器股份有限公司 Installation positioning apparatus of air conditioner inside and outside machine connecting pipe
CN101504093A (en) * 2008-02-05 2009-08-12 乐金电子(天津)电器有限公司 Indoor and outdoor coolant tubing connector of air conditioner
US20120049512A1 (en) * 2010-09-01 2012-03-01 Hayes Jr Frank F Flare fittings with circumferential sleeve for improved high pressure seal

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015117274A1 (en) * 2014-02-09 2015-08-13 孙海潮 Connection screw nut for dedicated use in split air conditioning refrigerant connection pipelines
WO2016065648A1 (en) * 2014-11-01 2016-05-06 孙海潮 Pipe fitting for pipeline connection
WO2016065651A1 (en) * 2014-11-01 2016-05-06 孙海潮 Pipe fitting for pipeline connection
CN105276317A (en) * 2015-11-20 2016-01-27 朱德伟 Novel pressure hose and connecting component thereof
CN106402530A (en) * 2016-10-31 2017-02-15 北京宇航系统工程研究所 Reusable sealing connection structure
CN106402530B (en) * 2016-10-31 2018-11-23 北京宇航系统工程研究所 A kind of reusable Hermetical connecting structure
WO2019042269A1 (en) * 2017-08-28 2019-03-07 艾默生环境优化技术(苏州)有限公司 Sealed connection structure, functional component, thermal expansion valve, and system
CN109630251A (en) * 2018-11-21 2019-04-16 东风汽车集团有限公司 One kind being used for the anti-freeze pressure difference pipe structure of exhaust system and exhaust system, automobile

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Application publication date: 20140312