CN201014088Y - Take-over adapter assembly for refrigerate and air conditioning equipment - Google Patents
Take-over adapter assembly for refrigerate and air conditioning equipment Download PDFInfo
- Publication number
- CN201014088Y CN201014088Y CNU2007201060880U CN200720106088U CN201014088Y CN 201014088 Y CN201014088 Y CN 201014088Y CN U2007201060880 U CNU2007201060880 U CN U2007201060880U CN 200720106088 U CN200720106088 U CN 200720106088U CN 201014088 Y CN201014088 Y CN 201014088Y
- Authority
- CN
- China
- Prior art keywords
- tube
- pipe joint
- union nut
- fittings
- air conditioning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a pipeline joint component used for cooling and air conditioning devices comprising a pipe joint nut, a pipe joint with one end stretching into the pipe joint nut and being spirally connected with the pipe joint nut, a mouth expanded bugle type connecting pipe with the mouth expanded end being compressed between the sealed surfaces of the pipe joint nut and the pipe joint, the sealed surface of end of the pipe joint is a sphere surface from the end surface to the external round in intergradation, the sealed surface in the pipe joint nut is a tapered surface. The utility model solves the problem that the existing pipeline joint component requires a bigger screwing torque for adopting the bevel sealing manner, meanwhile, the phenomenon of mouth expanded bugle type connecting pipe being damaged with the existing thread sealing can be avoided, the utility model has the advantages of good sealing effect, easy and convenient installation and operation, safe and environmental-protecting, etc.
Description
Technical field
The utility model relates to a kind of Tube to tube fittings assembly, mainly be meant be used to freeze and the apparatus of air conditioning on the Tube to tube fittings assembly.
Background technique
On the existing refrigeration and the apparatus of air conditioning, in connecting, pipeline needs to use the Tube to tube fittings assembly.As shown in Figure 2, the Tube to tube fittings assembly of showing among the figure comprises: Tube to tube fittings 1, union nut 2 and enlarging horn connecting tube 3, Placement is that union nut 2 adopts the end that is threadedly connected to Tube to tube fittings 1, by tightening union nut 2, inner conical surface by union nut 2 upward forms sealing with the male cone (strobilus masculinus) (referring to Fig. 2 A) that the loudspeaker face of enlarging horn connecting tube 3 is pressed on Tube to tube fittings 1, promptly be provided with the conical surface of the same tapering in Tube to tube fittings 1 outer end in the inner end of union nut 2, the inner conical surface by union nut 2 and the male cone (strobilus masculinus) of Tube to tube fittings 1 compress the loudspeaker face of enlarging horn connecting tube 3 and realize face contact seal, adopt this sealing means, because sealing area is big between two conical surfaces, if it is big slightly that machining error causes the conical surface and threaded circular to beat, thereby cause sealability bad, cause freezing medium leakage easily, reduce refrigeration performance, and it is very big to realize sealing the screw-down torque that need apply, operation is also inconvenient, the screw thread that Tube to tube fittings 1 often occurs is twisted bad mashed tooth, even union nut 2 occurs and break, directly cause freezing medium leakage, Tube to tube fittings such as scraps at economic loss, not only change trouble, and meeting contaminated air, damage the ozone layer, influence environmental protection.Existing Tube to tube fittings assembly also has a kind of seal form to be: the angle of the conical surface of Tube to tube fittings 1 is than the point of the angle design of the conical surface of union nut 2; utilize differential seat angle to form linear sealing at the path place of union nut 2 taperings; adopt this seal form can reach the purpose that reduces screw-down torque; if but screw-down torque is big slightly; occur phenomenon is twisted into two parts or damaged to connecting tube through regular meeting, cause troubles such as freezing medium leakage and maintenance.
Summary of the invention
The purpose of this utility model is to solve existing Tube to tube fittings assembly to adopt conical surface seal, area of contact is big, need the problem that screw-down torque is big, sealing effect is bad, overcome the structural type that the inclined-plane that adopts different taperings forms linear sealing simultaneously, when the big slightly drawback of easily connecting tube being twisted into two parts of screw-down torque.
Thereby, the utility model provides a kind of refrigeration and apparatus of air conditioning Tube to tube fittings assembly, it comprises: the Tube to tube fittings that union nut, end extend in the union nut and union nut is spirally connected and penetrate in the union nut and flared end is pressed in enlarging horn connecting tube between the sealing surface of union nut and Tube to tube fittings, sealing surface in the described union nut is a conical surface, it is characterized in that: the sealing surface of described Tube to tube fittings end is by the outside round sphere that crosses that slips over of end face.
Wherein, the outstanding camber of the sealing surface of described Tube to tube fittings is 0.2～2.0mm.
Owing to adopt technique scheme, change the sealing inclined-plane of the Tube to tube fittings in the Tube to tube fittings assembly into spherical (circular-arc), make union nut when compressing the flared end of enlarging horn connecting tube, sealing contact surface reduces with respect to two area of contact with inclined-plane sealing (conical surface seal) of same slope, screw-down torque is corresponding to be reduced, sealability improves, the sealing contact surface of while with respect to the linear sealing that the sealing surface that adopts two kinds of different gradients forms increases, so tighten by initial moment and also can not damage enlarging horn connecting tube, thereby reach the reduction screw-down torque, union nut does not break in the time of can not occurring big moment again and tighten, connecting tube such as twists into two parts at defective, and easy and convenient during fitting operation, safety and environmental protection again.
The outstanding camber of ball sealing surface is selected 0.2～2.0mm, thereby guarantees suitable screw-down torque, and sealability is best.
Description of drawings
Fig. 1 is that the refrigeration of the present utility model and the apparatus of air conditioning are used the Tube to tube fittings assembly
The exploded view of embodiment;
Figure 1A is the partial enlarged drawing at K place among Fig. 1;
Fig. 2 is the exploded view that the existing refrigeration and the apparatus of air conditioning are used the Tube to tube fittings assembly;
Fig. 2 A is the partial enlarged drawing at L place among Fig. 2.
Wherein: Tube to tube fittings 1 union nut 2 enlarging horn connecting tubes 3
Sphere 11 circular cone sealing surfaces 21 flared end 31
Embodiment
Referring to Fig. 1, showed the refrigeration of the present utility model and apparatus of air conditioning Tube to tube fittings assembly among the figure, it comprises union nut 2, Tube to tube fittings 1 and enlarging horn connecting tube 3, has circular cone sealing surface 21 in the inner of union nut 2, the tail end of enlarging horn connecting tube 3 passes the back side that union nut 2 makes its flared end 31 and leans against on the circular cone sealing surface 21 of union nut 2, the end of Tube to tube fittings 1 reaches in the union nut 2, the outside thread of the internal thread of union nut 2 and Tube to tube fittings 1 is tightened, have by the outside round sphere 11 (referring to Figure 1A) that crosses that slips over of end face in the end of Tube to tube fittings 1, the outstanding camber of this sphere 11 is 0.5mm, the flared end 31 of enlarging horn connecting tube 3 is pressed between the sphere 11 of the circular cone sealing surface 21 of union nut 2 and Tube to tube fittings 1 by locking union nut 2, of the present utility modelly change spherical sealing surface into by sealing surface with Tube to tube fittings 1 end, make union nut 2 when compressing enlarging horn connecting tube 3, overcome inclined-plane sealing (conical surface seal) mode and need the big problem of screw-down torque, the problem of having avoided the linear sealing form to twist into two parts the enlarging connecting tube easily again.
Tube to tube fittings 1 in the present embodiment is the Tube to tube fittings of DN16 model (it is the enlarging horn connecting tube of φ 19 that this model adopts diameter), by test, reach the leak free sealing purpose of 3.0Mpa air pressure, adopt the ball face sealing form of Tube to tube fittings 1 of the present utility model to carry out leakage test, only need the screw-down torque of 10～15N.m; And adopt existing inclined-plane sealing means, generally to reach the above moment of 40N.m at least just can seal the moment that some producer adopts even reach 60～100N.m.If the same moment of 60～100N.m that adopts of the utility model is tightened sealing, then effect obviously can be better.So the utility model has the sealed force moment of reducing, environmental protection safe in utilization, characteristics such as good seal performance when refrigeration and apparatus of air conditioning fitting operation.And the sealing surface of Tube to tube fittings 1 end is a sphere, even under the effect of bigger screwing force, slick and sly surface can not cause the phenomenon of cutting off or damage connecting tube to take place.
It should be noted that, the outstanding camber of sphere 11 is 0.2～2.0mm, the size of value should be selected according to the size of the diameter of Tube to tube fittings, but this value has been reacted the radius R value of sphere 11 and has been selected, if spherical radius R value is excessive, sphere is near the inclined-plane, the effect that reduces screw-down torque is bad, and select less camber, tighten also by initial moment and can not damage, therefore, the sealing sphere camber of the stop valve of all models and Tube to tube fittings is 0.2～2.0 best results on the refrigeration of the present utility model and the apparatus of air conditioning.
To sum up, the utility model is applicable to the Tube to tube fittings assembly of all models on the refrigeration and the apparatus of air conditioning, and its laborsaving and good seal performance, and not fragile connecting tube are avoided the freezing medium leakage contaminated air, damage the ozone layer safety and environmental protection.
Claims (2)
1. refrigeration and apparatus of air conditioning Tube to tube fittings assembly, it comprises: the Tube to tube fittings that union nut, end extend in the union nut and union nut is spirally connected and penetrate in the union nut and flared end is pressed in enlarging horn connecting tube between the sealing surface of union nut and Tube to tube fittings, sealing surface in the described union nut is a conical surface, it is characterized in that: the sealing surface of described Tube to tube fittings end is by the outside round sphere that crosses that slips over of end face.
2. refrigeration according to claim 1 and apparatus of air conditioning Tube to tube fittings assembly is characterized in that: the outstanding camber of the sealing surface of described Tube to tube fittings is 0.2～2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201060880U CN201014088Y (en) | 2007-02-05 | 2007-02-05 | Take-over adapter assembly for refrigerate and air conditioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201060880U CN201014088Y (en) | 2007-02-05 | 2007-02-05 | Take-over adapter assembly for refrigerate and air conditioning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201014088Y true CN201014088Y (en) | 2008-01-30 |
Family
ID=39025882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201060880U Expired - Lifetime CN201014088Y (en) | 2007-02-05 | 2007-02-05 | Take-over adapter assembly for refrigerate and air conditioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201014088Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372611A (en) * | 2012-04-18 | 2013-10-30 | 珠海格力电器股份有限公司 | Nut sleeving and riveting device for pipe fittings |
-
2007
- 2007-02-05 CN CNU2007201060880U patent/CN201014088Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372611A (en) * | 2012-04-18 | 2013-10-30 | 珠海格力电器股份有限公司 | Nut sleeving and riveting device for pipe fittings |
| CN103372611B (en) * | 2012-04-18 | 2015-09-23 | 珠海格力电器股份有限公司 | Pipe fitting is worn nut and is rushed riveting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080130 |
|
| CX01 | Expiry of patent term |