CN207470954U - Anti-dismantling pipe connection device and air conditioner - Google Patents
Anti-dismantling pipe connection device and air conditioner Download PDFInfo
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- CN207470954U CN207470954U CN201721618349.7U CN201721618349U CN207470954U CN 207470954 U CN207470954 U CN 207470954U CN 201721618349 U CN201721618349 U CN 201721618349U CN 207470954 U CN207470954 U CN 207470954U
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Abstract
The utility model provides a kind of Anti-dismantling pipe connection device and air conditioner.Anti-dismantling pipe connection device includes：Pipe fitting and union nut, union nut includes the first connecting portion for being connected with pipe fitting, there is bell-mouthed first second connecting portion taken over for connecting, for the twisting portion screwed for tool and it is connected between second connecting portion and twisting portion and twists into two parts portion, round table surface and close twisting portion of the outer surface in portion including close second connecting portion and the cylindrical surface being connected with the small end of round table surface can be twisted into two parts, enable that portion's forced breakage at cylindrical surface after pipe fitting and union nut locking can be twisted into two parts, the outer surface of first connecting portion and second connecting portion is cylindrical surface.Above-mentioned technical proposal ensures the non-dismountable property of pipe fitting and union nut, avoids because accidentally dismounting leads to coolant leakage；Portion outer surface can be twisted into two parts and be divided into two parts, using calliper size when easy to process, while its wall thickness is smaller, is conducive to preferentially be broken in wall thickness smaller part position.
Description
Technical field
The utility model is related to air-conditioning technical fields, more specifically, are related to a kind of Anti-dismantling pipe connection device and a kind of sky
Adjust device.
Background technology
At present, indoor unit is connected by split air conditioner generally use pipe fitting with union nut with the pipeline of outdoor unit
It connects.Existing pipe fitting and union nut are mainly made of thread segment and prism section two parts, and prism section has force application plane, are led to
It crosses and clockwise moment is applied to the prism section of pipe fitting and union nut, rotate together with thread segment and be fitted close to form sealing
Face allows refrigerant to circulate so as to which indoor unit be connected with the pipeline of outdoor unit.But by applying counterclockwise force to prism section
Square equally can be such that thread segment rotates counterclockwise together, so as to which the cooperation of pipe fitting and union nut be unclamped, i.e., pipe fitting with
There is dismounting between union nut.
But for using the air conditioner of flammable refrigerant, in order to avoid because coolant leakage being caused to cause peace during accidentally dismounting
Full accident, correlation standard indoor do not allow to use detachable connector.Therefore, it is existing in order to meet pipe connection device requirement
The evaporator of indoor unit usually is taken over to take over outdoor unit by technology by welding manner to be connected.But welding has operation
Complexity, there are the shortcomings of security risk for office operation.
Utility model content
The utility model is intended at least solve one of technical problem in the prior art.
For this purpose, the purpose of the one side of the utility model is, a kind of Anti-dismantling pipe connection device is provided.
The purpose of the other side of the utility model is, provides a kind of air-conditioning for including above-mentioned Anti-dismantling pipe connection device
Device.
To achieve the above object, the technical solution of the utility model one side provides a kind of Anti-dismantling pipe connection device,
Including：Pipe fitting；And union nut, the union nut include first connecting portion, the use for being connected with the pipe fitting
In connection with bell-mouthed first second connecting portion taken over, for the twisting portion that screws for tool and be connected to described the
Portion is twisted into two parts between two connecting portions and the twisting portion；Wherein, the outer surface for twisting into two parts portion is included close to described second
The round table surface of connecting portion and close to the twisting portion and the cylindrical surface that is connected with the small end of the round table surface makes described to twist into two parts portion
Can the pipe fitting and the union nut locking after at the cylindrical surface for twisting into two parts portion forced breakage, described first
The outer surface of connecting portion and the second connecting portion is cylindrical surface.
The Anti-dismantling pipe connection device that the utility model above-mentioned technical proposal provides, passes through pipe fitting and union nut connecting tube
Road, and setting can twist into two parts portion between the second connecting portion of union nut and twisting portion, during assembling so that tool, which screws, to be taken over
The twisting portion of nut, when screwing torque and reaching packing torque, union nut and pipe joint locking realize that two connecting lines are close
Connection；Continue the twisting portion of twisting union nut after locking, before the peak torque that union nut can be born is reached, can twist into two parts
Portion because can not bear it is larger be broken when screwing torque, so as to fulfill second connecting portion and twisting part from；Due to the first connection
Portion and the outer surface of second connecting portion are all cylindrical surface, and take over spiral shell can not be reversely screwed by tool due to lacking force application plane
Mother so as to ensure that the non-dismountable property of pipe fitting and union nut, is avoided because accidentally dismounting leads to the hair of coolant leakage accident
Raw, simple in structure, easy to operate, processing and installation is at low cost；Secondly as pipe fitting be attached thereto take between usually adopt
With being welded to connect, can the portion of twisting into two parts be arranged on union nut, compared to can the portion of twisting into two parts be arranged on pipe fitting, can make to twist
Disconnected position is far from welding position, influence during so as to avoid twisting into two parts to welding position, and then ensures pipe fitting and connect between taking over
The reliability connect avoids causing the destruction of welding position leakage during fracture；Portion outer surface can be twisted into two parts and be divided into two parts：It is close
Second connecting portion is round table surface, is cylindrical surface close to twisting portion, and the small end of round table surface is connected with cylindrical surface, so that can twist
The wall thickness smaller part in disconnected portion is located at cylindrical surface, on the one hand preferentially breaks at the cylindrical surface close to twisting portion convenient for that can twist into two parts portion
It splits, avoids causing the destruction of second connecting portion leakage during fracture；On the other hand vernier caliper measurement is utilized when easy to process
The size that the smaller cylindrical surface of wall thickness goes out, it is ensured that the accuracy of measurement, consequently facilitating the minimum in portion can be twisted into two parts by rationally designing
Wall thickness, realization can twist into two parts portion and be broken between packing torque and peak torque.
In addition, the Anti-dismantling pipe connection device that the utility model above-mentioned technical proposal provides can also have following supplementary technology
Feature：
In the above-mentioned technical solutions, it is described twist into two parts it is linear in an axial direction with the wall thickness of the round table surface corresponding part in portion
Variation, and be gradually reduced towards the direction in the twisting portion；The wall thickness twisted into two parts in portion with the cylindrical surface corresponding part
It is identical in an axial direction, and less than the wall thickness that can be twisted into two parts in portion with the round table surface corresponding part.
In the technical scheme, the outer surface that can twist into two parts portion is divided into two parts：Close to second connecting portion be round table surface, wall
Thick linear change, and being gradually reduced towards the direction in twisting portion in an axial direction, it is excellent in the position close to twisting portion convenient for portion can be twisted into two parts
First it is broken；It is cylindrical surface close to twisting portion, the relatively small cylinder of portion's wall thickness can be twisted into two parts using calliper when easy to process
Size at face, while its wall thickness is smaller, is conducive to preferentially be broken in wall thickness smaller part position when it is screwed torque.
In the above-mentioned technical solutions, the wall thickness of the portion of twisting into two parts in an axial direction be respectively less than the second connecting portion wall thickness and
The wall thickness in the twisting portion.
In the technical scheme, design can the wall thickness of the portion of twisting into two parts in an axial direction be respectively less than the wall thickness of second connecting portion and twisting portion
Wall thickness, you can the wall thickness for twisting into two parts portion is relatively thin, and portion can be twisted into two parts by advantageously ensuring that preferentially breaks during by turning moment
It splits.
In the above-mentioned technical solutions, the second connecting portion be connected with the portion of twisting into two parts one end end face part protrusion
The outer surface for twisting into two parts portion forms step.
In the technical scheme, due to needing accurate control that can twist into two parts the minimum wall thickness (MINI W.) in portion, in second connecting portion with that can twist
The outer surface of the junction in disconnected portion forms step, and can effectively reduce can twist into two parts the oblique of the round table surface that the outer surface in portion is formed in this way
Degree, so as to make that larger angle is formed between round table surface and the cylindrical surface being connected with the small end of round table surface, during easy to process
Vernier caliper, which is caught at thickness minimum, measures its thickness, and the round platform gradient for avoiding large size nut is larger, causes slide calliper rule that can not be caught in
The problem of measuring so as to be difficult to ensure that thickness.
In the above-mentioned technical solutions, the length for twisting into two parts portion is in the range of 3mm~5mm.
In the technical scheme, the length that can twist into two parts portion on the one hand cannot be excessive, and butt tube nut applies applied force when excessive
The central axes of square easily tilt, cause up and down two spanner twistings when the bad power of making；On the other hand can not be too small, block when too small
Ruler can not be caught in the size for measuring the minimum thickness that can twist into two parts portion, therefore model of the Design of length in 3mm~5mm that will can twist into two parts portion
In enclosing, it can twist into two parts at portion pair thickness that can twist into two parts portion to ensure that slide calliper rule can be caught in and measure, and butt tube nut is avoided to apply
The central axes of union nut tilt during stubborn torque of putting english.
In the above-mentioned technical solutions, offered on the outer surface in the twisting portion axially through notch, the notch
Width is more than first outer diameter taken over, enable it is described can twist into two parts after portion's forced breakage the twisting portion from the notch from
First place of the taking over abjection.
In the technical scheme, after pipe fitting and union nut are locked, continue to screw the twisting portion of union nut, making can
Portion is twisted into two parts because can not bear larger forced breakage when screwing torque, realize second connecting portion and twisting part from；Twisting portion with
After second connecting portion separation, twisting portion by notch thereon from first place of taking over is deviate from, twisting portion is avoided to stay in first and is connect
Abnormal sound is generated on pipe.
In the above-mentioned technical solutions, the pipe fitting includes the third connecting portion coordinated with the first connecting portion, connect
It is used to contact the tapered portion to form sealing, Yi Jiyong with first horn mouth taken in the third connecting portion end
In the 4th connecting portion that connection second is taken over.
In the technical scheme, the second connecting portion of union nut is taken over first and is connect, the 4th connecting portion of pipe fitting
It takes over and connect with second, and when pipe fitting and union nut are locked, the tapered portion of the first horn mouth taken over and pipe fitting is supported
It connects and cooperatively forms sealing, thus by the cooperation of pipe fitting and union nut, realization first is taken over takes over sealed connection with second,
It avoids generating coolant leakage in the junction of the two, so that it is guaranteed that first takes over and the fastness of the second take over connection and sealing
Property.
In the above-mentioned technical solutions, the third connecting portion include external thread section, the first connecting portion include with it is described
The internal thread segment of external thread section cooperation；The union nut have axially through the first pilot hole, the second connecting portion
First pilot hole includes the taper wall surface of the hole being adapted with the bell shape；The pipe fitting have axially through second
Pilot hole, described second take over be inserted into the second pilot hole of the 4th connecting portion and with the 4th connecting portion weld connect
It connects；The outer surface of 4th connecting portion is prismatic surface, and the outer surface in the twisting portion is prismatic surface.
In the above-mentioned technical solutions, the third connecting portion of pipe fitting and the first connecting portion of union nut are connected using screw thread
It connects, it is simple in structure, it is easy to assembly；4th connecting portion of pipe fitting and second take between using being welded to connect, to ensure that pipe connects
Head the fastness and leakproofness connecting are taken over second, prevent refrigerant through pipe fitting and second take between fit-up gap it is outside
Leakage；The outer surface of 4th connecting portion of pipe fitting is set as prismatic surface, and the outer surface in the twisting portion of union nut is set as rib
Cylinder, convenient for screwing the prismatic surface of pipe fitting and the prismatic surface of union nut simultaneously with two twisting tools, realize pipe fitting with
Union nut is locked；Preferably, the outer surface of the 4th connecting portion is set as hexagonal structure, and the outer surface in twisting portion is set as hexagonal
Structure.
In any of the above-described technical solution, in packing torque M1The lower the maximum shear stress τ that can twist into two parts portion1For：In peak torque M2The lower the maximum shear stress τ that can twist into two parts portion2For：The τ in the case of outer surface for twisting into two parts portion is non-porous sealing surface1With
τ2Meet：Wherein, t is the thickness that can be twisted into two parts at the wall thickness minimum in portion, and d can twist into two parts portion to be described
Internal diameter, σbFor the tensile strength for twisting into two parts portion.
In the technical scheme, the thickness t at the wall thickness minimum by that pair can twist into two parts portion is rationally designed, i.e., according to close
Envelope torque and peak torque give the size requirement for twisting into two parts union nut, so as to which portion can be twisted into two parts in packing torque and peak torque
Between be broken, wherein packing torque ensures that the tapered portion of pipe fitting and the first horn mouth taken over abut against and cooperatively forms effectively
Torque is screwed needed for sealing, peak torque is the sealing knot destroyed between the tapered portion of pipe fitting and the first horn mouth taken over
Structure and make the torque that screws needed for seal failure, so that it is guaranteed that can the torque that is born of the portion of twisting into two parts meet pipe fitting and take over spiral shell
Mother locking, the end tapered portion of the first horn mouth taken over and pipe fitting is made effectively to seal, and ensure can the portion of twisting into two parts born
Peak torque will not destroy sealing structure between the first horn mouth taken over and the tapered portion of pipe fitting, so as to fulfill can
The locking torque for twisting into two parts portion is controlled in rational range, is prevented coolant leakage, is further ensured that safety operation and use；Specifically
Ground, in the case of can twist into two parts the outer surface in portion as non-porous sealing surface, it is ensured that τ1And τ2Meet：Just can
Portion can be twisted into two parts by being effectively ensured is broken between packing torque and peak torque.
Another technical solution of the utility model provides a kind of air conditioner, including：Outdoor unit；And indoor unit, it is described
It is connected with first to circulate for refrigerant on one in outdoor unit and the indoor unit to take over, is connected with for refrigerant stream on another
Logical second is taken over, described first take over and described second take between by the Anti-dismantling pipe described in any of the above-described technical solution
Connection device is connected.
The air conditioner that the utility model above-mentioned technical proposal provides, because it includes the tamper described in any of the above-described technical solution
Pipe connection device is unloaded, thus with the advantageous effect of the Anti-dismantling pipe connection device described in any of the above-described technical solution, it is no longer superfluous herein
It states.
The additional aspect and advantage of the utility model will become apparent or new by this practicality in following description section
The practice of type is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination accompanying drawings below to embodiment
Become apparent and be readily appreciated that, wherein：
Fig. 1 is the decomposition texture schematic diagram of Anti-dismantling pipe connection device described in the utility model one embodiment；
Fig. 2 is the dimensional structure diagram of union nut in Fig. 1；
Fig. 3 is the right side structural representation of Fig. 2；
Fig. 4 is the schematic cross-sectional view of Fig. 2；
Fig. 5 is the enlarged structure schematic diagram in A portions in Fig. 4.
Wherein, the correspondence in Fig. 1 to Fig. 5 between reference numeral and component names is：
1 union nut, 10 first pilot holes, 11 first connecting portions, 12 second connecting portions, 13 can twist into two parts portion, 131 round platforms
Face, 132 cylindrical surfaces, 14 twisting portions, 141 notches, 2 pipe fittings, 21 tapered portion, 22 third connecting portions, 23 the 4th connecting portions, 3
One takes over, 31 horn mouths, and 4 second take over.
Specific embodiment
In order to be more clearly understood that the above-mentioned purpose of the utility model, feature and advantage, below in conjunction with the accompanying drawings and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality
It is novel to be implemented using other different from mode described here, therefore, the scope of protection of the utility model not by
The limitation of following public specific embodiment.
1 to Fig. 5 the Anti-dismantling pipe connection device and air-conditioning according to some embodiments of the utility model are described with reference to the accompanying drawings
Device.
As shown in Figures 1 to 5, a kind of Anti-dismantling pipe connection device provided according to the utility model some embodiments, including：
Pipe fitting 2 and union nut 1.
Specifically, as shown in Figure 1, Figure 2 and Figure 4, union nut 1 includes first connecting for what is with pipe fitting 2 be connected
Portion 11, for connect the first take over 3 with horn mouth 31 second connecting portion 12, for the twisting portion 14 that screws for tool with
And it is connected between second connecting portion 12 and twisting portion 14 and twists into two parts portion 13；Wherein, it as shown in Fig. 2, Fig. 4 and Fig. 5, can twist into two parts
The outer surface in portion 13 include close to second connecting portion 12 round table surface 131 and close to twisting portion 14 and with the small end of round table surface 131
Connected cylindrical surface 132 enables that portion 13 can be twisted into two parts after pipe fitting 2 and union nut 1 are locked in the cylinder that can twist into two parts portion 13
The outer surface of forced breakage at face 132, first connecting portion 11 and second connecting portion 12 is cylindrical surface.
The Anti-dismantling pipe connection device that the utility model above-described embodiment provides, passes through 1 connecting tube of pipe fitting 2 and union nut
Road, and setting can twist into two parts portion 13 between the second connecting portion 12 of union nut 1 and twisting portion 14, during assembling so that tool
The twisting portion 14 of union nut 1 is screwed, when screwing torque and reaching packing torque, union nut 1 and pipe fitting 2 are locked, and are realized
Two connecting lines closely connect；Continue the twisting portion 14 of twisting union nut 1 after locking, reaching what union nut 1 can be born
Before peak torque, can twist into two parts portion 13 because can not bear it is larger be broken when screwing torque, so as to fulfill second connecting portion 12 with
Twisting portion 14 detaches；It is flat due to lacking force since the outer surface of first connecting portion 11 and second connecting portion 12 is all cylindrical surface
Face and union nut 1 can not be reversely screwed by tool, so as to ensure that the non-dismountable property of pipe fitting 2 and union nut 1, keep away
Exempt from because accidentally dismounting leads to the generation of coolant leakage accident, simple in structure, easy to operate, processing and installation is at low cost；Next, by
In pipe fitting 2 and between taking over, generally use is welded to connect, and can be twisted into two parts portion 13 and is arranged on union nut 1, compared to can
It twists into two parts portion 13 to be arranged on pipe fitting 2, can make to twist into two parts position far from welding position, to welding position during so as to avoid twisting into two parts
It influences, and then the reliability for ensuring pipe fitting 2 and being connected between taking over, avoids that the destruction of welding position is caused and let out during fracture
Leakage；13 outer surface of portion can be twisted into two parts and be divided into two parts：It is round table surface 131 close to second connecting portion 12, is cylinder close to twisting portion 14
Face 132, and the small end of round table surface 131 is connected with cylindrical surface 132, so that the wall thickness smaller part that can twist into two parts portion 13 is located at cylinder
At face 132, on the one hand convenient for can twist into two parts portion 13 close to twisting portion 14 cylindrical surface 132 at is preferentially broken, avoid fracture when pair
The destruction of second connecting portion 12 and cause leakage；On the other hand vernier caliper measurement wall thickness smaller cylinder is utilized when easy to process
The size that face 132 goes out, it is ensured that the accuracy of measurement consequently facilitating can twist into two parts the minimum wall thickness (MINI W.) in portion 13 by rationally designing, is realized
Portion 13 can be twisted into two parts to be broken between packing torque and peak torque.
Preferably, as shown in Fig. 2, the outer surface in twisting portion 14 is prismatic surface.
The outer surface in twisting portion 14 is prismatic surface, convenient for passing through the outer surface butt tube spiral shell in twisting tool clamping twisting portion 14
Mother 1, which applies, screws power, realizes that pipe fitting 2 is locked with union nut 1；Preferably, as shown in figure 3, the outer surface in twisting portion 14 is
Hexagonal structure.
In one embodiment of the utility model, as shown in Figure 4 and Figure 5, it can twist into two parts corresponding with round table surface 131 in portion 13
Partial wall thickness changes linearly in an axial direction, and is gradually reduced towards the direction in twisting portion 14；Can twist into two parts in portion 13 with cylindrical surface
The wall thickness of 132 corresponding parts is identical in an axial direction, and less than the wall thickness that can be twisted into two parts in portion 13 with 131 corresponding part of round table surface.
The outer surface that portion 13 can be twisted into two parts is divided into two parts：It is round table surface 131 close to second connecting portion 12, wall thickness is in an axial direction
Linear change, and be gradually reduced towards the direction in twisting portion 14, it is preferential in the position close to twisting portion 14 convenient for portion 13 can be twisted into two parts
Fracture；It is cylindrical surface 132 close to twisting portion 14, it is relatively small using calliper can to twist into two parts 13 wall thickness of portion when easy to process
Size at cylindrical surface 132, while its wall thickness is smaller, is conducive to preferentially be broken in wall thickness smaller part position when it is screwed torque.
In one embodiment of the utility model, as shown in Figure 4 and Figure 5, it is small that the wall thickness of portion 13 in an axial direction can be twisted into two parts
In the wall thickness of second connecting portion 12 and the wall thickness in twisting portion 14.
Design can twist into two parts the wall thickness of portion 13 in an axial direction and be respectively less than the wall thickness of second connecting portion 12 and the wall thickness in twisting portion 14, i.e.,
The wall thickness that portion 13 can be twisted into two parts is relatively thin, and portion 13 can be twisted into two parts by advantageously ensuring that preferentially is broken during by turning moment.
In one embodiment of the utility model, as shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, second connecting portion 12 is with that can twist
The be connected end face part protrusion of one end of disconnected portion 13 can twist into two parts the outer surface in portion 13 and form step.
Due to needing accurate control that can twist into two parts the minimum wall thickness (MINI W.) in portion 13, in second connecting portion 12 and the connection that portion 13 can be twisted into two parts
The outer surface at place forms step, and can effectively reduce can twist into two parts the gradient of round table surface 131 that the outer surface in portion 13 is formed in this way, from
And make to form larger angle between round table surface 131 and the cylindrical surface 132 being connected with the small end of round table surface 131, mistake easy to process
Vernier caliper, which is caught at thickness minimum, in journey measures its thickness, and the round platform gradient for avoiding large size nut is larger, causes slide calliper rule can not
It is caught in the problem of measurement is so as to be difficult to ensure that thickness.
In one embodiment of the utility model, the length in portion 13 can be twisted into two parts in the range of 3mm~5mm.
The length that portion 13 can be twisted into two parts on the one hand cannot be excessive, and butt tube nut 1 applies the central axes appearance of torque when excessive
Easily tilt, cause up and down two spanner twistings when the bad power of making；On the other hand can not be too small, slide calliper rule can not be caught in survey when too small
Amount can twist into two parts the size of the minimum thickness in portion 13, therefore will can twist into two parts the Design of length in portion 13 in the range of 3mm~5mm, with
The outer surface pair in portion 13 can be twisted into two parts and can twist into two parts the wall thickness smaller part in portion 13 and measure, and avoid docking by ensuring that slide calliper rule can be caught in
The central axes of union nut 1 tilt when the application of pipe nut 1 screws torque.
In one embodiment of the utility model, as shown in Figure 1 to Figure 3, axis is offered on the outer surface in twisting portion 14
To the notch 141 of perforation, the width (i.e. along the circumferential opening width in twisting portion 14) of notch 141 more than the outer diameter of the first take over 3,
Twisting portion 14 after can twisting into two parts 13 forced breakage of portion is enable to deviate from the first take over 3 from notch 141.
After pipe fitting 2 and union nut 1 are locked, continue to screw the twisting portion 14 of union nut 1, make can to twist into two parts portion 13 because
Can not bear it is larger screw torque and forced breakage, realize that second connecting portion 12 is detached with twisting portion 14；Twisting portion 14 and
After the separation of two connecting portions 12, twisting portion 14 by notch 141 thereon at the first take over 3 is deviate from, twisting portion 14 is avoided to stay
Abnormal sound is generated on the first take over 3.
In one embodiment of the utility model, as shown in Figure 1 and Figure 4, pipe fitting 2 includes matching with first connecting portion 11
The third connecting portion 22 of conjunction is connected to 22 end of third connecting portion to be formed for contacting with the horn mouth 31 of the first take over 3
The tapered portion 21 of sealing and the 4th connecting portion 23 for connecting the second take over 4；Further, as shown in figure 4, take over spiral shell
Mother 1 have axially through the first pilot hole 10, the first pilot hole 10 of second connecting portion 12 includes and 31 shape phase of horn mouth
The taper wall surface of the hole of adaptation.
The second connecting portion 12 of union nut 1 is connect with the first take over 3, and the 4th connecting portion 23 of pipe fitting 2 connects with second
Pipe 4 connects, and when pipe fitting 2 and union nut 1 are locked, the horn mouth 31 of the first take over 3 is supported with the tapered portion 21 of pipe fitting 2
It connects and cooperatively forms sealing, so as to by the cooperation of pipe fitting 2 and union nut 1, realize 4 sealing of the first take over 3 and the second take over
Connection avoids generating coolant leakage in the junction of the two, so that it is guaranteed that the fastness of 4 connection of the first take over 3 and the second take over
With leakproofness.
Preferably, as depicted in figs. 1 and 2, third connecting portion 22 includes external thread section, and first connecting portion 11 includes and outer spiral shell
The internal thread segment of line section cooperation, the third connecting portion 22 of pipe fitting 2 are connected with the first connecting portion 11 of union nut 1 using screw thread
It connects, it is simple in structure, it is easy to assembly.
Preferably, as shown in Figure 1, pipe fitting 2 have axially through the second pilot hole, 4 insertion the 4th of the second take over connect
It is welded to connect in second pilot hole of socket part 23 and with the 4th connecting portion 23, to ensure jail that pipe fitting 2 is connect with the second take over 4
Solidity and leakproofness prevent refrigerant from being leaked out through the fit-up gap between 2 and second take over 4 of pipe fitting.
Preferably, as shown in Figure 1 to Figure 3, the outer surface of the 4th connecting portion 23 is prismatic surface, and the outer surface in twisting portion 14 is
Prismatic surface convenient for screwing the prismatic surface of the prismatic surface of pipe fitting 2 and union nut 1 simultaneously with two twisting tools, realizes that pipe connects
First 2 lock with union nut 1；It is further preferred that as shown in Figure 1 to Figure 3, the outer surface of the 4th connecting portion 23 is hexagonal knot
Structure, the outer surface in twisting portion 14 is hexagonal structure.
In some embodiments of the utility model, in packing torque M1The maximum shear stress τ in portion 13 can be twisted into two parts down1For：In peak torque M2The maximum shear stress τ in portion 13 can be twisted into two parts down2For：τ in the case of can twist into two parts the outer surface in portion 13 as non-porous sealing surface1And τ2
Meet：Wherein, t is the thickness that can be twisted into two parts at the wall thickness minimum in portion 13, and d is the internal diameter that can twist into two parts portion 13, σb
For the tensile strength in portion 13 can be twisted into two parts.
The thickness t at wall thickness minimum by that couple can twist into two parts portion 13 is rationally designed, i.e., according to packing torque and maximum
Torque gives the size requirement for twisting into two parts union nut 1, is broken between packing torque and peak torque so as to which portion 13 can be twisted into two parts,
Wherein packing torque ensure the tapered portion 21 of pipe fitting 2 and the horn mouth 31 of the first take over 3 abut against cooperatively form it is effective close
Torque is screwed needed for envelope, and peak torque is close between the horn mouth 31 for 21 and first take over 3 of tapered portion for destroying pipe fitting 2
Seal structure and make the torque that screws needed for seal failure, meet so that it is guaranteed that the torque that is born in portion 13 can be twisted into two parts by pipe fitting 2
It is locked with union nut 1, the horn mouth 31 of the first take over 3 is made effectively to be sealed, and ensure with the end tapered portion 21 of pipe fitting 2
The peak torque born in portion 13, which can be twisted into two parts, will not destroy between the horn mouth 31 of the first take over 3 and the tapered portion of pipe fitting 2
Sealing structure controls in rational range so as to fulfill by the locking torque that can twist into two parts portion 13, prevents coolant leakage, further
Ensure safety operation and use；Specifically, in the case of can twist into two parts the outer surface in portion 13 as non-porous sealing surface, such as Fig. 1 extremely
Situation shown in fig. 5, it is ensured that τ1And τ2Meet：Just can effectively ensure that can twist into two parts portion 13 in packing torque and most
It is broken between large torque.
In one specific embodiment, union nut 1 extrudes bar for copper, can twist into two parts the suitable minimum thickness in portion 13 and be
0.3mm~0.7mm.
The utility model another embodiment provides for a kind of air conditioner (not shown), including：Outdoor unit and room
Interior machine is connected with the first take over 3 circulated for refrigerant on one in outdoor unit and indoor unit, is connected with for refrigerant on another
Second take over 4 of circulation, passes through the Anti-dismantling pipe connection device phase of any of the above-described embodiment between the first take over 3 and the second take over 4
Connection.
The air conditioner that the utility model above-described embodiment provides, the Anti-dismantling pipe described in any of the above-described embodiment is included because of it
Connection device, thus with the advantageous effect of the Anti-dismantling pipe connection device described in any of the above-described embodiment, details are not described herein.
In conclusion the Anti-dismantling pipe connection device that the utility model embodiment provides, during assembling, union nut and pipe fitting
After locking continue twisting union nut twisting portion, make the portion of twisting into two parts because can not bear it is larger be broken when screwing torque, ensure pipe
The non-dismountable property of connector and union nut is avoided because accidentally dismounting leads to coolant leakage；The locking torque that portion can be twisted into two parts is controlled
Between packing torque and peak torque, coolant leakage is prevented, ensures safety operation and use；Portion outer surface can be twisted into two parts and be divided into two
Part：It is round table surface close to second connecting portion, wall thickness linear change in an axial direction；It is cylindrical surface close to twisting portion, it is easy to process
Shi Liyong calliper sizes, while its wall thickness is smaller, is conducive in wall thickness smaller part position preferentially break when it is screwed torque
It splits.
In the description of the utility model, it is to be understood that the orientation or position relationship of the instructions such as term " on ", " under " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description rather than instruction
Or imply that signified device or unit must have specific direction, with specific azimuth configuration and operation, it is thus impossible to understand
For the limitation to the utility model.
In the description of the present invention, unless otherwise clearly defined and limited, term " connected ", " connection ", " Gu
It is fixed " etc. should all be interpreted broadly, for example, " connection " can be fixedly connected or be detachably connected or integrally connect
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary.For the ordinary skill people of this field
For member, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that combining the particular features, structures, materials, or characteristics that the embodiment or example describe is contained at least the one of the utility model
In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment
Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiments or example
In combine in an appropriate manner.
It these are only the preferred embodiment of the utility model, be not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of Anti-dismantling pipe connection device, which is characterized in that including：
Pipe fitting；With
Union nut, the union nut include for be connected with the pipe fitting first connecting portion, have for connecting
Bell-mouthed first second connecting portion taken over, for the twisting portion that screws for tool and be connected to the second connecting portion and
Portion is twisted into two parts between the twisting portion；
Wherein, the outer surface for twisting into two parts portion include close to the round table surface of the second connecting portion and close to the twisting portion and
The cylindrical surface being connected with the small end of the round table surface enables the portion that can twist into two parts to be locked in the pipe fitting and the union nut
The outer surface of next forced breakage at the cylindrical surface for twisting into two parts portion, the first connecting portion and the second connecting portion is equal
For cylindrical surface.
2. Anti-dismantling pipe connection device according to claim 1, which is characterized in that
The wall thickness twisted into two parts in portion with the round table surface corresponding part changes linearly in an axial direction, and towards the twisting portion
Direction be gradually reduced；
It is described twist into two parts it is identical in an axial direction with the wall thickness of the cylindrical surface corresponding part in portion, and less than it is described can twist into two parts in portion with
The wall thickness of the round table surface corresponding part.
3. Anti-dismantling pipe connection device according to claim 1, which is characterized in that
The wall thickness of the portion of twisting into two parts in an axial direction is respectively less than the wall thickness of the second connecting portion and the wall thickness in the twisting portion.
4. Anti-dismantling pipe connection device according to claim 1, which is characterized in that
The second connecting portion is connected with the portion of twisting into two parts can twist into two parts the outer surface in portion described in the end face part protrusion of one end
Form step.
5. Anti-dismantling pipe connection device according to claim 1, which is characterized in that
The length for twisting into two parts portion is in the range of 3mm~5mm.
6. Anti-dismantling pipe connection device according to claim 1, which is characterized in that
Offered on the outer surface in the twisting portion axially through notch, the width of the notch is more than described first and takes over
Outer diameter, enable it is described can twist into two parts portion's forced breakage after the twisting portion deviate from from the notch from first place of taking over.
7. Anti-dismantling pipe connection device according to claim 1, which is characterized in that
The pipe fitting includes the third connecting portion coordinated with the first connecting portion, is connected to the third connecting portion end use
In the tapered portion to form sealing is contacted with first horn mouth taken over and for connect second take over the 4th connect
Socket part.
8. Anti-dismantling pipe connection device according to claim 7, which is characterized in that
The third connecting portion includes external thread section, and the first connecting portion includes the internal thread coordinated with the external thread section
Section；
The union nut have axially through the first pilot hole, the first pilot hole of the second connecting portion include with it is described
The taper wall surface of the hole that bell shape is adapted；
The pipe fitting have axially through the second pilot hole, described second takes over the second dress for being inserted into the 4th connecting portion
It is welded to connect in distribution and with the 4th connecting portion；
The outer surface of 4th connecting portion is prismatic surface, and the outer surface in the twisting portion is prismatic surface.
9. Anti-dismantling pipe connection device according to any one of claim 1 to 8, which is characterized in that
In packing torque M1The lower the maximum shear stress τ that can twist into two parts portion1For：
In peak torque M2The lower the maximum shear stress τ that can twist into two parts portion2For：
The τ in the case of outer surface for twisting into two parts portion is non-porous sealing surface1And τ2Meet：
Wherein, t is the thickness that can be twisted into two parts at the wall thickness minimum in portion, and d can twist into two parts the internal diameter in portion, σ for described inbIt is twisted to be described
The tensile strength in disconnected portion.
10. a kind of air conditioner, which is characterized in that including：
Outdoor unit；With
Indoor unit is connected with first to circulate for refrigerant on one in the outdoor unit and the indoor unit and takes over, another
On be connected with second to circulate for refrigerant and take over, described first take over and described second take between by such as claim 1 to 9
Any one of described in Anti-dismantling pipe connection device be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721618349.7U CN207470954U (en) | 2017-11-28 | 2017-11-28 | Anti-dismantling pipe connection device and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721618349.7U CN207470954U (en) | 2017-11-28 | 2017-11-28 | Anti-dismantling pipe connection device and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207470954U true CN207470954U (en) | 2018-06-08 |
Family
ID=62258912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721618349.7U Active CN207470954U (en) | 2017-11-28 | 2017-11-28 | Anti-dismantling pipe connection device and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207470954U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114339A (en) * | 2018-10-29 | 2019-01-01 | 奥克斯空调股份有限公司 | A kind of Anti-dismantling connector, connector component and air conditioner |
-
2017
- 2017-11-28 CN CN201721618349.7U patent/CN207470954U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114339A (en) * | 2018-10-29 | 2019-01-01 | 奥克斯空调股份有限公司 | A kind of Anti-dismantling connector, connector component and air conditioner |
| CN109114339B (en) * | 2018-10-29 | 2023-08-11 | 奥克斯空调股份有限公司 | Anti-disassembly connector, connector assembly and air conditioner |
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