CN103604012B - A kind of connector element being exclusively used in split-type air conditioner connecting refrigerant lines road - Google Patents
A kind of connector element being exclusively used in split-type air conditioner connecting refrigerant lines road Download PDFInfo
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- CN103604012B CN103604012B CN201310126968.4A CN201310126968A CN103604012B CN 103604012 B CN103604012 B CN 103604012B CN 201310126968 A CN201310126968 A CN 201310126968A CN 103604012 B CN103604012 B CN 103604012B
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- tapered sleeve
- nut
- connecting tube
- internal taper
- taper hole
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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
- F16L19/00—Joints 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
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/025—Pipe 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
- F16L19/028—Pipe 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
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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
- F16L19/00—Joints 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
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
Abstract
A kind of connector element being exclusively used in split-type air conditioner connecting refrigerant lines road, it is characterized in that: connector element comprises nut and tapered sleeve, be nut internal taper hole between nut thread endoporus and light wall endoporus, matching used tapered sleeve is provided with in nut internal taper hole, tapered sleeve internal taper hole is established at the bottom of taper sleeve hole, during connection, outer frustum extruding horn mouth on joint, extrude tapered sleeve internal taper hole by horn mouth and tapered sleeve is bored oblique angle and be squeezed in and realize connecting tube between nut internal taper hole and connecting tube and seal, horn mouth is squeezed in that joint is outer realizes horn mouth sealing between frustum and tapered sleeve internal taper hole.The present invention has the high leak tightness that can be used for ownership refrigerant system and can be used in the connection of connecting tube of all materials, with the feature of attaching nut's absolute interchangeability of prior art.
Description
Technical field
The invention belongs to air-conditioning technical field, only relate to a kind of connector element of air-conditioning refrigerant connecting pipeline.Particularly only relate to a kind of connector element being exclusively used in split-type air conditioner indoor set and outdoor unit connecting refrigerant lines road.
Background technique
Split-type air conditioner known is at present that refrigerant line is connected into a circulation loop by the joint connected on indoor set and outdoor unit by two connecting refrigerant lines.Joint in this specification is indoor set refrigeration agent input/output port for the externally threaded pipe joint of band be connected with connecting tube and the male connection of outdoor unit on the stop valve be connected with connecting tube.These two connecting refrigerant lines for junction chamber internal-external machine in prior art are generally copper pipe, also employing copper-aluminium welding pipe is had in recent years, 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, its with indoor set and the most frequently used connecting means of outdoor unit be bell mouth expanding and be connected.It is that tube opening is packed into attaching nut that bell mouth expanding connects, then tube opening is expanded into horn mouth, be connected with the outside thread spiral on indoor and outdoor machine joint by the internal thread on attaching nut, by the nut circular cone bottom attaching nut horn mouth be squeezed in and the outer frustum of joint forms horn mouth be tightly connected.There is the Substantial technical feature that internal thread is nut.Bell mouth expanding Placement is to bell mouth expanding, and connecting tube material, applies the connection requests such as the grasp of moment size higher, slightly improper, will cause and be tightly connected unsuccessfully when attaching nut connects.Bell mouth expanding Placement determines horn mouth and can not open too much, horn mouth tube wall is thinner, therefore, the ability of the crush seal that horn mouth bears is more weak, prior art also has increase on horn mouth positive and negative to protect core, with protection and the design improving bell-mouthed bearing capacity, but bell mouth expanding Placement determines horn mouth can not be opened too much, bell-mouthed crush seal face is less, horn mouth tube wall is thinner, therefore, horn mouth bearing capacity is limited, also just can not bear comparatively high sealing pressure require that, even if desirable installation connects, the sealing requirements of more high pressure systems can not be met, generally, connect improper or just grown easy generation leakage with the time, 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, this kind of structural feature of connecting means causes just.The Application and Development of particularly new in recent years refrigerant system, as R410a, R32, R290 refrigerant system etc., higher to sealing requirements, as just made bell-mouthed technique in the technical regulation of R410a, R32 refrigerant system, withstand voltage properties has made requirements at the higher level, and the R290 refrigerant system then detachable bell mouth expanding Placement of clear stipulaties can not use.Therefore, original bell mouth expanding Placement can not meet R410a, and the high sealing of the refrigerant system that R32, R290 etc. are new require that.The connecting tube that bell mouth expanding connects needs through nut sleeve in nut trepan, what no matter adopt which kind of form to horn mouth protects core, sheath, which kind of is done to bell-mouthed preparation process to improve, nut trepan gap is had between pipe itself and nut trepan after connecting, thus bell mouth expanding connect in connecting tube the weakest withstand voltage position horn mouth tear curved mouth open and in fact directly communicate with the external world, horn mouth is torn the curved mouth moment open and is among ambient atmosphere, be subject to vitiated air in air, the erosion of various sewage, during air-conditioning work, agglutinate condensed water in connecting tube joint, condensed water will penetrate into horn mouth by gap and tear curved mouth open, cause corrosion, year in and year out, when eroding to a certain degree, horn mouth tears curved mouth open can produce leakage because of corrosion failure, when being the connection of dissimilar metal for joint material and connecting tube material especially, many again a kind of electrochemical corrosion destroy, corrosive attack is particularly evident, in being connected with the bell mouth expanding of aluminium connecting tubes at copper sleeve, copper sleeve directly crimps with aluminium connecting tubes horn mouth and contacts, just also exist all the time after electrochemical corrosion between copper aluminium connects, the horn mouth of most weak part tear open curved mouth then the easiest because of electrochemical corrosion very fast rupture and leakage, therefore, the Placement of bell mouth expanding is not directly applied in the connection of copper sleeve and aluminium connecting tubes, why Here it is there will be a kind of copper-aluminium welding pipe in recent years, namely part broad in the middle is aluminum pipe, but a bit of copper pipe is welded at two of having to, retain copper pipe and pack into nut, bell mouth expanding, the reason be connected with copper sleeve.In addition the state of certain vibration is always in during pipe connection work, pipe itself also can rock loosening possibility because the interference of external environment produces, gap is had owing to connecting between rear pipe itself and nut trepan, the trepanning hole length being socketed connecting tube in usual nut is only about 3mm, and the circular cone bottom nut is ined succession mutually with trepanning, therefore this gap is short and tear curved mouth open with connecting tube horn mouth and be connected, any vibration causing connecting tube, rock and all can be delivered to horn mouth almost undampedly and tear open in curved mouth, these factors exacerbate horn mouth and tear breaking of curved mouth open and produce leakage, time has been grown and nut also can be caused slightly to loosen, when there is slight loosening in nut, horn mouth also can produce leakage because of the reduction of extruding force.Therefore, finding a kind of connection sealing can be higher, horn mouth is torn curved mouth open and is corroded and the anti-loosening superior performance of vibrationproof anti-shake from the external world, can directly all to copper sleeve and aluminum pipe etc. different kinds of metal tubes be coupled together and the attaching nut of electrochemical corrosion can not be produced, just become people to thirst for the technical barrier solved always.
Summary of the invention
Object of the present invention is just for the Placement Problems existing that above-mentioned refrigerant system pipeline bell mouth expanding connects, on the basis that bell mouth expanding connects, under the prerequisite not changing existing joint structure, and the connector element on a kind of indoor apparatus of air conditioner provided specially and outdoor unit connecting refrigerant lines road, thoroughly solve above-mentioned bell mouth expanding connecting means Problems existing: namely sealing is lower, horn mouth is torn curved mouth open and is produced corrosion because communicating with the external world, the anti-loosening poor-performing of vibrationproof and the problem that can not be directly used in copper sleeve and be connected with aluminum pipe.
The object of the invention is to realize in the following manner: a kind of connector element being exclusively used in split-type air conditioner connecting refrigerant lines road, comprise the joint on indoor set and outdoor unit, the horn mouth of the outer frustum of joint and connecting tube end, it is characterized in that: connector element comprises nut and tapered sleeve, nut is a nut with inner via hole, nut inner via hole is divided into threaded interior hole and light wall endoporus, be nut internal taper hole between threaded interior hole and light wall endoporus, matching used tapered sleeve is provided with in nut internal taper hole, tapered sleeve is the tapered sleeve trepanning of hollow, tapered sleeve internal taper hole is provided with bottom tapered sleeve trepanning, tapered sleeve trepanning hole wall and tapered sleeve outer cone inclined-plane form tapered sleeve and bore oblique angle, the horn mouth of the outer frustum extruded joint pipe end of joint, extruded tapered sleeve internal taper hole by the horn mouth of connecting tube end and tapered sleeve is bored oblique angle and be squeezed in the connecting tube realizing tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube and seal, the horn mouth of connecting tube end is squeezed in the outer horn mouth that realizes between frustum and tapered sleeve internal taper hole of joint and seals, tapered sleeve cone oblique angle crush seal movement direction and nut precession direction are in the other direction.
The present invention can also be realized by such mode:
1, nut internal taper hole cone oblique angle is less than 12 degree.
2, tapered sleeve cone oblique angle is equal to or less than nut internal taper hole cone oblique angle.
3, taper sleeve hole height and nut internal taper hole height are all greater than 4mm, and tapered sleeve trepanning is tall and big in 2mm.
4, at the bottom of nut internal taper hole, footpath equals to be greater than footpath at the bottom of taper sleeve hole, and footpath at the bottom of nut internal taper hole equals to be greater than footpath at the bottom of the outer frustum of joint.
Tapered sleeve trepanning hole wall of the present invention and tapered sleeve outer cone inclined-plane form tapered sleeve and bore oblique angle, the horn mouth of the outer frustum extruded joint pipe end of joint, extruded tapered sleeve internal taper hole by the horn mouth of connecting tube end and tapered sleeve is bored oblique angle and be squeezed in the connecting tube realizing tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube and seal, the horn mouth of connecting tube end is squeezed in the outer structural design realizing horn mouth sealing between frustum and tapered sleeve internal taper hole of joint, be one to contact each other, act on each other, the double sealing structure of reciprocal causation.Tapered sleeve trepanning hole wall and tapered sleeve outer cone inclined-plane form tapered sleeve and bore the angle that oblique angle refers to the projection line of tapered sleeve trepanning hole wall and the projection line on tapered sleeve outer cone inclined-plane, cone oblique angle of the present invention is corresponding taper hole, the center line of frustum and tapered sleeve and the angle of its cone inclined-plane projection line, therefore, the tapered sleeve that tapered sleeve trepanning hole wall and tapered sleeve outer cone inclined-plane form bores the angle that oblique angle i.e. tapered sleeve overlap centerline hole and tapered sleeve outer cone inclined-plane, if there is no tapered sleeve trepanning, just there is no the tapered sleeve cone oblique angle on tapered sleeve, the connecting tube just not having tapered sleeve cone oblique angle to be compressed between nut internal taper hole and connecting tube seals, so, tapered sleeve trepanning realizes important technology feature of the present invention.Horn mouth in connecting tube end extrudes tapered sleeve internal taper hole and tapered sleeve is bored oblique angle and is squeezed in the connecting tube realizing tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube when sealing under the outer frustum squeezing action of joint, the direction that tapered sleeve cone oblique angle is extruded displacement is vertically contrary with the direction that nut thread connects movement, certain sealing load is reached when tapered sleeve cone oblique angle is compressed between nut internal taper hole and connecting tube, tapered sleeve cone oblique angle can because being subject to huge resistance cannot displacement vertically time, bore with tapered sleeve the tapered sleeve internal taper hole that oblique angle is connected can suddenly increase bell-mouthed reaction force, tapered sleeve extrudes compacted horn mouth by tapered sleeve internal taper hole conversely, the horn mouth realizing connecting tube end is squeezed in the outer horn mouth sealing between frustum and tapered sleeve internal taper hole of joint.Therefore, the structural design of tapered sleeve internal taper hole is provided with bottom tapered sleeve trepanning, be in fact by tapered sleeve trepanning and tapered sleeve internal taper hole are connected as a single entity, connecting tube is sealed to seal to be unified into contact each other with horn mouth, act on each other, the structural design of the double-sealing of reciprocal causation.Original bell mouth expanding connects, moment undue force, excessive, too quickly, horn mouth preparation process, horn mouth quality of materials, the factors such as wall thickness, extruding horn mouth is all likely caused to break and can not seal, but double sealing structure design of the present invention, when moment undue force, excessive, too quickly when causing horn mouth to break, horn mouth is sealed, yes have failed in sealing, but cause horn mouth to seal failed moment, but can play and tapered sleeve be bored the effect of oblique angle extrusion-deformation between nut internal taper hole and connecting tube further, due to the present invention design taper sleeve hole high can not by structural limitations and centrally line direction lengthen arbitrarily, thus tapered sleeve trepanning and connecting tube can be strengthened, the crush seal face of tapered sleeve male cone (strobilus masculinus) and nut internal taper hole, crush seal face increases, extruding force also just can correspondingly improve, the effective sealing face also just corresponding expansion of connecting tube sealing, this will improve the sealability of connecting tube sealing further, until reach objective seal pressure, realize goal of the invention of the present invention.Tapered sleeve cone oblique angle crush seal movement direction and nut precession direction are in the other direction, refer to that nut is connected precession vertically toward while the movement of joint direction with joint screw thread, the outer frustum extruding horn mouth of joint and then extruding tapered sleeve cone oblique angle enter between nut internal taper hole and connecting tube, movement rightabout with nut movement direction is done at tapered sleeve and tapered sleeve cone oblique angle vertically, this embody tapered sleeve of the present invention cone oblique angle be do with nut internal taper hole in nut internal taper hole opposite direction displacement compressional movement and produce sealing load and then compressive strain banding connecting tube and obtain the technical characteristics that connecting tube seals.The shape of tapered sleeve trepanning should be consistent with the shape of connecting tube, and on usual air-conditioning, connecting tube is pipe, and therefore tapered sleeve sleeve pipe is the internal orifice dimension of straight cylinder endoporus, tapered sleeve sleeve pipe, only need slightly larger than the external diameter of connecting tube, to meet the use that is sealed and matched.Matching used tapered sleeve is provided with in nut internal taper hole, support the use, refer to footpath at the bottom of the hole of nut internal taper hole, cone oblique angle, Kong Gao, matched design is made in end footpath and tapered sleeve relevant position, is squeezed in the connecting tube realizing tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube and seals to make the horn mouth of connecting tube end extruding tapered sleeve internal taper hole and tapered sleeve to be bored oblique angle and obtain desirable sealing, support the use and also show, both nut internal taper hole and tapered sleeve realize in objects of the present invention indispensable.
It is that bell mouth expanding connects and the most easily breaks and the position of leaking that horn mouth tears curved mouth open, original bell mouth expanding connects, when attaching nut and the outer frustum of joint compress horn mouth, because connecting tube is socketed among nut, cover interporal lacuna is certainly existed between connecting tube and nut, horn mouth is torn curved mouth open and is in just on this gap, when joint outer frustum extruding horn mouth, it is maximum that horn mouth tears the extruding force that curved mouth bears open, it is then gap without support force that horn mouth tears curved mouth opposite side open, therefore, moment more difficult control when nut connects, too smallly do not reach sealing purpose, excessive, pressure break horn mouth is just had to tear the danger of curved mouth open.Even temporarily do not break, the horn mouth bearing capacity of tearing curved mouth open is out of shape because of enlarging, extrusion-deformation and decline very large, along with various sewage vitiated air and condensed water tear the Long Term Contact of curved mouth open by gap and horn mouth, add the vibration etc. when connecting tube works, horn mouth is torn curved mouth open and just have been become the hidden danger place of the most easily breaking and producing and leaking.But because the horn mouth that have employed connecting tube end is squeezed in the outer project organization between frustum and tapered sleeve internal taper hole of joint; when the horn mouth of connecting tube end be squeezed in joint outer between frustum and tapered sleeve internal taper hole time; horn mouth tears curved mouth tapered sleeve side open and tapered sleeve internal taper hole extrudes laminating completely closely; now tapered sleeve plays one and sets off protective action; can effectively protect horn mouth to tear curved mouth open, improve the bearing capacity that horn mouth tears curved mouth open.Also just because of have employed the horn mouth of the outer frustum of joint by squeeze flow tube end and tapered sleeve is bored oblique angle and be squeezed in the design realizing connecting tube sealing between nut internal taper hole and connecting tube, make the cover interporal lacuna between nut and connecting tube be squeezed in by tapered sleeve cone oblique angle the tapered sleeve trepanning realizing being extruded when tapered sleeve trepanning and connecting tube seal distortion between nut internal taper hole and connecting tube to close, completely cut off horn mouth to tear curved mouth open and communicate with extraneous, completely eliminate extraneous dirty air, sewage, the destroying infection of curved mouth is torn in condensed water and vibration open to horn mouth.The necessary condition that electrochemical corrosion occurs to be in wet air, among water, completely cut off horn mouth to tear curved mouth open and communicate with extraneous, electrochemical corrosion lose necessary condition, also just completely eliminate the problem that can produce electrochemical corrosion when joint is connected with dissimilar metal connecting tube.Prior art shows, when nut screw promotes tapered sleeve crush seal, tapered sleeve can be subject to a sideway torque effect, and sideway torque has been the destruction loosening sealing to sealing, and sideway torque is crossed conference and caused poorly sealed, so should reduce sideway torque as far as possible.If there is no the horn mouth of the outer frustum extruded joint pipe end of joint, extrude tapered sleeve internal taper hole by the horn mouth of connecting tube end and tapered sleeve is bored oblique angle and be squeezed in the structural design that the connecting tube that realizes tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube seals, just become not have bell-mouthed straight-through connecting tube to be directly subject to the extruding of the outer frustum of joint, when connecting tube packs in tapered sleeve, if connecting tube pipe end exposes a tapered sleeve part, it is connecting tube that the outer frustum of joint squeezes what push away, now connecting tube and tapered sleeve are loosening, connecting tube is easy to squeezed pushing away and the tapered sleeve that slips away, shift onto with when flushing at the bottom of tapered sleeve internal taper hole when connecting tube pipe end is squeezed, tapered sleeve just can be squeezed, and be direct extruding, now, tapered sleeve design is improper, extruding is firmly uneven, overexert, the sideway torque brought to tapered sleeve during nut thread connection precession will be excessive, tapered sleeve with connecting tube occur vertically relative displacement obtain seal while to loosen because of excessive relative rotation of sideway torque and seal, i.e. limit sealing, limit loosens, sealing cannot be realized.But utilize the feature that horn mouth and connecting tube are connected as a single entity, be designed to the structure of the outer frustum of joint by extruding horn mouth indirect extrusion tapered sleeve internal taper hole, horn mouth is together with connecting tube, tapered sleeve three is that synchronous axial compression is moved, and connecting tube just can not depart from horn mouth and tapered sleeve and produce relative sliding and to slip away tapered sleeve.At horn mouth together with connecting tube, while the synchronous axial compression movement of tapered sleeve three, horn mouth, connecting tube, the moment of torsion that tapered sleeve obtains is almost identical, thus connecting tube is occurred in extruding and relative rotation of tapered sleeve and loosen the possibility that seals and drop to minimum, on the contrary, due to taper sleeve hole height of the present invention, the particular design at tapered sleeve cone oblique angle, make tapered sleeve trepanning and connecting tube, the sealing surface that tapered sleeve male cone (strobilus masculinus) contacts with nut internal taper hole is larger, and sealing is with tapered sleeve cone oblique angle, connecting tube, the crush seal of the surface of contact between nut internal taper hole is main, now, horn mouth, connecting tube, the trickle relative rotation that the sideway torque that tapered sleeve obtains is brought, the effect polishing sealing surface can be played, be conducive to face crush seal on the contrary.Extruding horn mouth when the outer frustum of joint is by being connected with nut thread, tapered sleeve internal taper hole is pushed by horn mouth, thus the opposite direction along nut precession while of promoting tapered sleeve cone oblique angle and connecting tube moves, tapered sleeve cone oblique angle is more and more closely squeezed between connecting tube and nut internal taper hole, reach joint, horn mouth, nut internal taper hole, tapered sleeve cone oblique angle, the crush seal between connecting tube.Crush seal now, for horn mouth sealing seals with connecting tube the double-sealing acted on simultaneously, thus sealability is higher, and sealing reliability is stronger.When tapered sleeve and connecting tube move along the opposite direction of nut precession simultaneously, tapered sleeve cone oblique angle is closely squeezed between connecting tube and nut internal taper hole, in the process, when tapered sleeve cone oblique angle, connecting tube, when nut internal taper hole stops because of the huge frictional force produced each other moving in the other direction, now only need slightly to apply some moments of torsion to nut, the outer frustum of joint further to horn mouth extruding, can further increase the outer frustum of joint, horn mouth, the horn mouth sealability between tapered sleeve internal taper hole.
Be nut internal taper hole between threaded interior hole and light wall endoporus, the i.e. seal space that formed of nut internal taper hole and connecting tube, that specialized designs is on nut inner hole, and then the tapered sleeve cone oblique angle utilizing the present invention to design is squeezed in the structural design in the seal space that nut internal taper hole and connecting tube formed, ensure that any structural contradiction does not occur the connecting tube outer frustum with existing joint that is tightly connected, thus under reaching the prerequisite not changing existing air-conditioning joint structure, implement object of the present invention, the attaching nut of connector element of the present invention and prior art is made to be provided with interchangeability completely.While tapered sleeve cone oblique angle is squeezed in the seal space that nut internal taper hole and connecting tube formed, also reaches and tear horn mouth open curved mouth and the external world completely isolated object.Therefore, nut being arranged nut internal taper hole is the important technology feature realizing the object of the invention.
Connector element of the present invention comprises nut and tapered sleeve, and nut can be made into outer-hexagonal shape, is convenient to spanner connection.Cone oblique angle of the present invention is corresponding taper hole, the center line of frustum and tapered sleeve and the angle of its inclined-plane line.The cone oblique angle of the outer frustum of prior art middle joint is 45 degree, when the present invention applies, and expands the bell-mouthed cone oblique angle of connecting tube, and the cone oblique angle of tapered sleeve internal taper hole should be identical with the cone oblique angle of the outer frustum of joint, thus guarantee the absolute interchangeability with attaching nut in prior art.
The design that the cone oblique angle of nut internal taper hole is less than 12 degree, determine nut under the prerequisite meeting intensity, to get thinner wall thickness just can to guarantee that nut obtains higher internal taper hole hole high, internal taper hole is higher, when the tapered sleeve that corresponding taper sleeve hole is high bores the squeeze flow at oblique angle, mean that the circumferential sealing face that tapered sleeve cone oblique angle and nut internal taper hole and connecting tube seal is larger, the sealability of acquisition is stronger.Nut circular cone table top of the prior art, limit by nut structure, can not do very large, connecting tube horn mouth is because could will make through nut, return after making and be pressed on nut circular cone, so bell-mouthed diameter must be less than the path of nut thread endoporus, therefore, the compressive plane that real participation crush seal connects is only bell-mouthed surface, this compressive surface and little and size are fixed, once nut circular cone, horn mouth, there is processing quality problem in the compressive plane of the outer frustum of joint, material problem, bell mouth expanding connecting means problem improperly, just be easy to cause horn mouth crush seal have failed.But the design that the cone oblique angle of nut internal taper hole is less than 12 degree, the circumferential sealing face that tapered sleeve cone oblique angle and connecting tube and nut internal taper hole are sealed obtains larger area becomes possibility, and by turning cone oblique angle down, add the design that long nut internal taper hole hole is high, make tapered sleeve trepanning and connecting tube, the circumferential sealing face of tapered sleeve male cone (strobilus masculinus) and nut internal taper hole obtains and tunes up, then by strengthening extruding force, reaches the seal request of needs.The design that the cone oblique angle of nut internal taper hole is less than 12 degree, also can make the overall wall thickness of tapered sleeve thinner, be easy to be extruded distortion, with abundant deformable seal in the space that nut internal taper hole and connecting tube are formed.
Tapered sleeve cone oblique angle is equal to or less than the cone oblique angle of nut internal taper hole, is all to be squeezed into nut internal taper hole in order to ensure tapered sleeve cone oblique angle when being extruded, and to guarantee tapered sleeve cone oblique angle and nut internal taper hole, tapered sleeve trepanning and connecting tube farthest seal and contact.Usually the cone oblique angle getting tapered sleeve equals the cone oblique angle of nut internal taper hole, or the cone oblique angle of tapered sleeve is less than cone oblique angle 1 to 2 degree of nut internal taper hole.
Taper sleeve hole height and nut internal taper hole height are all greater than 3mm, and tapered sleeve trepanning is tall and big in 2mm.Obtain the circumferential sealing face that is enough to meet seal request when being and sealing in order to ensure tapered sleeve cone oblique angle and connecting tube, particularly tapered sleeve trepanning is high, if too short, probably cause the connecting tube of tapered sleeve trepanning and connecting tube to seal and does not reach seal request.During practical application, the suggestion of tapered sleeve trepanning height is greater than 6mm.
At the bottom of nut internal taper hole, footpath equals to be greater than footpath at the bottom of taper sleeve hole, when being in order to satisfied connection, tapered sleeve can all be squeezed among nut internal taper hole, makes tapered sleeve and nut internal taper hole, reaches the sealing effect being tightly connected to obtain the best of maximum area between tapered sleeve and connecting tube.Otherwise, when footpath is less than footpath at the bottom of taper sleeve hole at the bottom of nut internal taper hole, cannot squeezes with regard to likely occurring tapered sleeve to be withstood by nut internal taper hole, thus crush seal cannot be completed, not reach the situation of sealing purpose of the present invention and effect.Footpath at the bottom of nut internal taper hole equals to be greater than footpath at the bottom of the outer frustum of joint, is to pass through the bell-mouthed extruding of connecting tube in order to ensure the outer frustum of joint, and then is all squeezed into by tapered sleeve among nut internal taper hole, reaches desirable sealing effect to guarantee to connect.Otherwise, when footpath at the bottom of nut internal taper hole is less than footpath at the bottom of the outer frustum of joint, just likely occur that the outer frustum of joint is when pushing horn mouth and then being squeezed among nut internal taper hole by tapered sleeve, the outer frustum of joint touches the nut circular cone that nut processing technology is brought, and the problem of extruding cannot be continued, be tightly connected and cannot complete.In Fig. 2,15a is the nut circular cone that nut processing technology is brought.
The present invention can be provided with circular bosses at nut internal taper hole afterbody; with connecting tube; tapered sleeve cone oblique angle encloses an annular groove; can guarantee that nut internal taper hole and tapered sleeve cone oblique angle are in certain fabrication error; the distance that one can extrude movement vertically is further added to tapered sleeve cone oblique angle; to reach by the object be tightly squeezed between nut internal taper hole and connecting tube, guarantee further to obtain desirable sealing effect.The present invention also can arrange seal ring in annular groove and between joint outside thread and the outer frustum of joint, by extruding seal ring pressure straddle type herein, the sealing of connecting pipeline is played to the effect improving sealability further, meanwhile, an elastic force effect can be produced after Double seal ring is compressed on its relevant position, effectively provide the moment stoping and connect and loosen.The present invention also can in joint and nut thread joint, and the outer frustum of joint, connecting tube horn mouth, tapered sleeve, the connecting part between nut internal taper hole, applies metal anaerobic adhesive.Apply metal anaerobic adhesive, not only sealability can be provided, high anti-dismounting force moment also can be provided, be provided with more reliable anti-connection and loosen ability, apply metal anaerobic adhesive, increase prevention dismounting force moment be nut with more than the decades of times be threaded of joint, may dismantle hardly under normal circumstances, thus for be applied in require non-removable connecting tube to connect R290 refrigerant system on become possibility.The present invention again can at joint and nut; the connection part of nut and connecting tube puts heat-shrinkable T bush; better connection part can be hedged off from the outer world, be conducive to protecting horn mouth and horn mouth to tear the sealability of curved mouth open, guarantee that the present invention connects the long-term reliability of high quality seal.Nut in the present invention can adopt brass, stainless steel, superior alloy steel, and the metallic material such as aluminum alloy are made.Tapered sleeve material is with red copper, and brass, aluminum alloy is good.When the present invention being applied in the connection of copper sleeve and aluminium and aluminium alloy pipe, the material of nut then adopts stainless steel, superior alloy steel, tapered sleeve material adopts aluminum alloy or red copper, brass, although in nut, the outer frustum of copper sleeve is directly contact with aluminium connecting tubes pipe end horn mouth, prior art shows, refrigeration agent in the inside system of contacting point can not make to produce electrochemical corrosion between copper aluminium, contacting point lateral gap is again by tapered sleeve trepanning sealing blocking of the present invention, this just can be avoided original horn mouth to connect effectively, copper fasten aluminium is because directly contacting and communicating with the external world and produce the problem of electrochemical corrosion.When connecting tube tubing is steel, the material of nut then adopts stainless steel, superior alloy steel, and tapered sleeve material adopts alloyed steel.Along with the development of technology, the application of aluminum alloy stop valve, aluminum alloy joint also appears in connecting tube and connects.When joint material is aluminum alloy, the material of nut then can adopt corresponding aluminum alloy, alloyed steel, stainless steel, and tapered sleeve material adopts aluminum alloy.
The present invention is the double-sealing design of horn mouth sealing and connecting tube sealing, add seal ring, the auxiliary seal of metal anaerobic adhesive, while these four kinds of sealings provide and far exceed original bell mouth expanding connection sealability, all can being threaded for nut and joint, Anti-dismantling moment is provided.The length of nut light cinclides, looks during practice and connects sealing needs, changeable.The gap of nut light cinclides and connecting tube is sealed by metal anaerobic adhesive, while shutoff communicates with the external world, metal anaerobic adhesive can provide a powerful Anti-dismantling moment to nut light cinclides, the Anti-dismantling moment provided tunes up by adjusting the length of long nut light cinclides, even as big as meeting till the Anti-dismantling of R290 refrigerant system to Placement require.
Owing to have employed technique scheme, the present invention has following main feature:
1, the double-sealing design of horn mouth sealing and connecting tube sealing, add seal ring, the auxiliary seal design of metal anaerobic adhesive, make sealability of the present invention, the sealability connected than original expansion loudspeaker has had the raising of matter, thus is enough to meet R410a, the working condition requirement of the refrigerant system that R32, R290 etc. are new.
2, tapered sleeve internal taper hole has completely cut off horn mouth and tears curved mouth to set off protection and tapered sleeve trepanning and the sealing of connecting tube that horn mouth tears curved mouth open open and communicate with extraneous, effectively protects the bearing capacity that horn mouth tears curved mouth open, increases the effective life connecting and seal.
3, the present invention can not increase connection difficulty, when not increasing link cost, directly be applied in joint and connecting tube be unlike material connection on, particularly be applied in the problem without electrochemical corrosion in the connection of copper sleeve and Al-alloy pipe and the connection of copper sleeve and steel connecting tube, substitute original copper pipe to connect, economic benefit is obvious.
4, the attaching nut on the present invention and existing air-conditioning has interchangeability completely, under the prerequisite not changing existing air-conditioning joint structure, can replace the attaching nut on existing air-conditioning.
Accompanying drawing explanation
Figure of description 1 is structural representation of the present invention.
Figure of description 2 is nuts of the present invention.
Figure of description 3 is tapered sleeves of the present invention.
Figure of description 4 is structural representations that prior art bell mouth expanding connects.
tool part mode of execution
Below in conjunction with drawings and Examples, the invention will be further described:
Accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, in accompanying drawing 4,1 is joint, 2 for being threaded, 3 is seal ring, 4 is nut, 5 is the outer frustum of joint, 6 is footpath at the bottom of the outer frustum of joint, 7 is nut internal taper hole, 8 is connecting tube horn mouth, 9 tear curved mouth open for horn mouth, 10 is tapered sleeve, 11 is nut annular groove, 12 is seal ring, 13 is connecting tube, 14 is nut thread endoporus, 15a is nut circular cone, 15 is footpath at the bottom of nut internal taper hole, 16 is nut internal taper hole cone oblique angle, 17 is that nut internal taper hole hole is high, 18 is nut inner cone nose end footpath, 19 is nut light wall endoporus, 20 is footpath at the bottom of taper sleeve hole, 21 is tapered sleeve internal taper hole, 22 is tapered sleeve cone oblique angle, 22a is tapered sleeve trepanning, 23 taper sleeve holes are high, 23a is that tapered sleeve trepanning is high, 24 is tapered sleeve cover nose end footpath, 25 is nut circular cone, 26 is nut trepan gap.
Embodiment: accompanying drawing 1 is linkage structure schematic diagram of the present invention.In Fig. 1,1 is jointing of the prior art, and in Fig. 1,4 for nut of the present invention, and connector element of the present invention to comprise in Fig. 1 tapered sleeve 10 in nut 4 and Fig. 1.In Fig. 1,2 to be nut 4 and joint 1 be threaded.Connecting tube 13 is packed into nut light wall endoporus 19, through nut 4, tapered sleeve 10 is packed into connecting tube 13, at connecting tube pipe end bell mouth expanding 8, then, pinch nut 4 on the other hand, one pulls connecting tube 13, connecting tube horn mouth 8 is drawn in nut internal taper hole 7 together with tapered sleeve 10, until feel is drawn motionless, and then, by the threaded interior hole 14 in nut 4 be connected joint 1 and be threaded 2, until feel cannot turn, pass through spanner again, till suitable moment is imposed to nut 4, the now horn mouth 8 of the outer frustum 5 squeeze flow tube end of joint, extrude tapered sleeve internal taper hole 7 by the horn mouth 8 of connecting tube end and tapered sleeve is bored oblique angle 22 and be squeezed in the connecting tube achieving tapered sleeve trepanning 22a and connecting tube 13 between nut internal taper hole 7 and connecting tube 13 and seal, suitably afterburning to nut 4 again, the horn mouth 8 of connecting tube end is squeezed in the outer horn mouth that achieves between frustum 5 and tapered sleeve internal taper hole 21 of joint and seals.Horn mouth is torn curved mouth 9 open and is fitted in completely after being extruded on tapered sleeve internal taper hole 21, and tapered sleeve internal taper hole 21 pairs of horn mouths are torn curved mouth 9 open and played and set off protective action.The present invention can the use of fitted seal circle and metal anaerobic adhesive, is applied in sealing and the higher connection of anti-loosening requirement.Using method is, before tapered sleeve 10 is packed into connecting tube 13, seal ring 12 is put connecting tube 13 pipe outer wall, from connect pipe end approximately slightly above taper sleeve hole high 23 position on, when then being drawn in nut internal taper hole 7 together with tapered sleeve 10 by connecting tube horn mouth 8, seal ring 12 is squeezed by tapered sleeve cone oblique angle 22 and pushes nut annular groove 11.Same, nut 4 being threaded with the joint 1 be connected before 2, seal ring 3 being overlapped upper connection outside thread and joint outward between frustum 5, then suddenly connect according to above-mentioned portion.After bell mouth expanding, at 2 places that are threaded, horn mouth 8, all surface of tapered sleeve 10, on the tube-surface of the connecting tube 13 of nut internal taper hole hole high 17 and the high 23 contour length of taper sleeve hole, apply metal anaerobic adhesive, all the other follow-up connecting means are identical.Add the design of seal ring and metal anaerobic adhesive, sealing and the anti-loosening effect of fixing further can be played, also can play and tear horn mouth 8 open curved mouth 9 together with horn mouth and be hedged off from the outer world, it is kept not weather, avoid electrochemical corrosion, alleviate the impact of vibration and improve the effect of Anti-dismantling moment.For the material of seal ring and the model of anaerobic adhesive, the present invention recommends to adopt the hydrogenation nitrile rubber seal ring of resistance to refrigerant system and 554 anaerobic adhesives of resistance to refrigerant system.The present invention is applied in connecting tube that joint 1 material and connecting tube 13 material are dissimilar materials when being connected, 4, nut should be good with stainless steel nut, and stainless steel is non-active material, and the electrochemical reaction between being connected with dissimilar metal is extremely weak, almost negligible.By joint 1 after having connected, nut 4, connecting tube 13 has connected connecting part and has put heat-shrinkable T bush in addition further isolated protection to external world, is sealed with validity Be very effective to the long-term stability connected.In Fig. 4,25 is the nut circular cone in existing bell mouth expanding interconnection technique, in order to implement to be tightly connected with the horn mouth 8 of outer frustum 5 extruded joint pipe 13 of joint of the prior art, in Fig. 4,26 is the nut trepan gap after the connection of prior art bell mouth expanding between pipe itself and nut trepan, communicates with the external world.Nut inner cone nose end footpath 18, slightly larger than tapered sleeve cover nose end footpath 24, is greater than the requirement that 1mm can meet nut annular groove 11 usually, and nut annular groove 11 length vertically gets 2 to 4mm length for good.Tapered sleeve cover nose end footpath 24 only slightly larger than connecting tube 13 external diameter, need pack into connecting tube as long as can meet, and both construction phase difference is good in 0.1mm.Usually, in the tolerance range of process conditions, tapered sleeve cover nose end footpath 24 is more close with the external diameter of connecting tube 13, and the effect that is tightly connected is better.In Fig. 2,15a is the nut circular cone that nut processing technology is brought, 25 identical with Fig. 4.
Air-conditioning of the present invention is air regulator, comprises the device element by refrigerant system, air being carried out to energy trasfer adjustment.As domestic air conditioning, central air-conditioner, car air conditioner, heat pump water heater etc.
Claims (1)
1. one kind is exclusively used in the connector element on split-type air conditioner connecting refrigerant lines road, comprise the joint on indoor set and outdoor unit, the horn mouth of the outer frustum of joint and connecting tube end, it is characterized in that: connector element also comprises nut and tapered sleeve, nut is a nut with inner via hole, nut inner via hole is divided into threaded interior hole and light wall endoporus, be nut internal taper hole between threaded interior hole and light wall endoporus, matching used tapered sleeve is provided with in nut internal taper hole, tapered sleeve has the tapered sleeve trepanning of hollow, tapered sleeve internal taper hole is provided with bottom tapered sleeve trepanning, tapered sleeve trepanning hole wall and tapered sleeve outer cone inclined-plane form tapered sleeve and bore oblique angle, the horn mouth of the outer frustum extruded joint pipe end of joint, extruded tapered sleeve internal taper hole by the horn mouth of connecting tube end and tapered sleeve is bored oblique angle and be squeezed in the connecting tube realizing tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube and seal, the horn mouth of connecting tube end is squeezed in the outer horn mouth that realizes between frustum and tapered sleeve internal taper hole of joint and seals, tapered sleeve cone oblique angle crush seal movement direction and nut precession direction are in the other direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310126968.4A CN103604012B (en) | 2013-04-13 | 2013-04-13 | A kind of connector element being exclusively used in split-type air conditioner connecting refrigerant lines road |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310126968.4A CN103604012B (en) | 2013-04-13 | 2013-04-13 | A kind of connector element being exclusively used in split-type air conditioner connecting refrigerant lines road |
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| CN103604012A CN103604012A (en) | 2014-02-26 |
| CN103604012B true CN103604012B (en) | 2015-12-23 |
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| CN201310126968.4A Expired - Fee Related CN103604012B (en) | 2013-04-13 | 2013-04-13 | A kind of connector element being exclusively used in split-type air conditioner connecting refrigerant lines road |
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Families Citing this family (11)
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|---|---|---|---|---|
| CN103604013B (en) * | 2013-05-05 | 2015-12-09 | 孙海潮 | A kind of connecting pipe fitting for pipeline |
| WO2015120608A1 (en) * | 2014-02-13 | 2015-08-20 | 孙海潮 | Connection screw nut for dedicated use in split air conditioning refrigerant connection pipelines |
| WO2016065651A1 (en) * | 2014-11-01 | 2016-05-06 | 孙海潮 | Pipe fitting for pipeline connection |
| WO2016065648A1 (en) * | 2014-11-01 | 2016-05-06 | 孙海潮 | Pipe fitting for pipeline connection |
| CN105107972A (en) * | 2015-09-16 | 2015-12-02 | 中山市博特机械厂 | U-shaped copper pipe type air expansion pipe device of radiator |
| CN105972713A (en) * | 2016-06-24 | 2016-09-28 | 海信（山东）空调有限公司 | Coupling pipe structure of air conditioner and air conditioner |
| CN106644286B (en) * | 2016-12-23 | 2019-01-18 | 湖北三江航天红峰控制有限公司 | A kind of cryogenic globe valve sealed fixing device |
| DE102017113195A1 (en) * | 2017-06-14 | 2018-12-20 | Bantboru Sanayi Ve Ticaret Anonim Sirketi | Rohrverbindungsvorichtung |
| KR101949436B1 (en) * | 2018-08-27 | 2019-03-04 | 오형동 | Connecting structure of refrigerant pipe |
| CN110985777A (en) * | 2019-12-25 | 2020-04-10 | 中国航空工业集团公司西安飞机设计研究所 | Oxygen pipeline sealing performance improving method |
| CN114166563B (en) * | 2021-12-17 | 2023-09-26 | 重庆交通职业学院 | Drilling device for civil engineering detection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1920512A (en) * | 1931-12-19 | 1933-08-01 | John Waugh | Pipe coupling |
| US2435261A (en) * | 1944-06-03 | 1948-02-03 | George V Woodling | Coupling device |
| US2466317A (en) * | 1946-06-26 | 1949-04-05 | Jr Frank A Kane | Tube coupling |
| CN201014091Y (en) * | 2007-03-28 | 2008-01-30 | 珠海格力电器股份有限公司 | Installation positioning device for connecting pipe of indoor unit and outdoor unit of air conditioner |
-
2013
- 2013-04-13 CN CN201310126968.4A patent/CN103604012B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1920512A (en) * | 1931-12-19 | 1933-08-01 | John Waugh | Pipe coupling |
| US2435261A (en) * | 1944-06-03 | 1948-02-03 | George V Woodling | Coupling device |
| US2466317A (en) * | 1946-06-26 | 1949-04-05 | Jr Frank A Kane | Tube coupling |
| CN201014091Y (en) * | 2007-03-28 | 2008-01-30 | 珠海格力电器股份有限公司 | Installation positioning device for connecting pipe of indoor unit and outdoor unit of air conditioner |
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|---|---|
| CN103604012A (en) | 2014-02-26 |
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