CN201126072Y - Pipe connection adapter assembly for refrigeration and air conditioning equipment - Google Patents
Pipe connection adapter assembly for refrigeration and air conditioning equipment Download PDFInfo
- Publication number
- CN201126072Y CN201126072Y CNU2007201061578U CN200720106157U CN201126072Y CN 201126072 Y CN201126072 Y CN 201126072Y CN U2007201061578 U CNU2007201061578 U CN U2007201061578U CN 200720106157 U CN200720106157 U CN 200720106157U CN 201126072 Y CN201126072 Y CN 201126072Y
- Authority
- CN
- China
- Prior art keywords
- tube
- connecting pipe
- union nut
- sealing surface
- 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 - Fee Related
Links
- 238000005057 refrigeration Methods 0.000 title claims description 14
- 238000004378 air conditioning Methods 0.000 title claims description 13
- 238000007789 sealing Methods 0.000 claims description 41
- 230000007704 transition Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 abstract 1
- 239000012595 freezing medium Substances 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a connecting pipe jointer component for refrigerant and air-adjusting device, which comprises: a connecting pipe nut, a connecting pipe jointer screw-connecting to the connecting pipe nut extending from the end part and a flaring trumpet-shaped connecting pipe which traverses to the connecting pipe nut and presses the flaring end between the connecting pipe nut and the sealed surface of the connecting pipe jointer; the sealed surface in connecting pipe nut is a conical surface; the end part of the connecting pipe jointer has a cone sealed surface; a protrude stage protruding outwards along the conical sealed surface is on the cone sealed surface. The utility model solves the technical problems of using the sloping seal, big contact surface, large force moment for screwing and bad sealed effect.
Description
Technical field
The utility model relates to a kind of Tube to tube fittings assembly, mainly is meant to be used for refrigeration and apparatus of air conditioning upper connecting tube adapter 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 connecting tube is damaged phenomenon 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 the inclined-plane sealing, and area of contact is big, needs the technical problem that screw-down torque is big, sealing effect is bad.
Another purpose of the present utility model is to overcome the inclined-plane that adopts different taperings to form linear sealing, and sealing surface is wire, the big slightly technical problem of easily connecting tube being twisted into two parts of screw-down torque.
For achieving the above object, 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, the female cone sealing surface that described union nut has, it is characterized in that: described Tube to tube fittings end has the outer cone sealing surface, has one along the outwards outstanding boss of outer cone sealing surface on described outer cone sealing surface.
Wherein, damage enlarging horn connecting tube for fear of the ambassador's boss of exerting oneself, the peak of described boss is 0.2～2.0mm to the distance of circular cone sealing surface.
Wherein: the shape of cross section of described boss is circular-arc or is triangular shape or is half polygon-shaped.
In order to improve the intensity of boss, described boss is arc transition with the root that the circular cone sealing surface is connected.
The utility model is owing to adopt technique scheme, the circular cone sealing surface of the Tube to tube fittings in the Tube to tube fittings assembly increases a boss, makes union nut when compressing enlarging horn connecting tube, and sealing contact surface reduces, screw-down torque is corresponding to be reduced, and sealability improves.
And then, the height of the boss on the described sealing surface of the present utility model has only 0.2～2.0mm (according to the model size design), and and the conical surface adopt arc transition, also can not damage being shaped as of enlarging horn connecting tube, especially this boss circular-arc safer reliable so tighten by initial moment.Defectives such as thereby it can reduce screw-down torque, and union nut does not break in the time of can not occurring big moment again and tighten, connecting tube is twisted into two parts are avoided the freezing medium leakage contaminated air, damage the ozone layer, and the protection environment, easy and convenient during fitting operation.
Description of drawings
Fig. 1 is the exploded view that the refrigeration of the present utility model and the apparatus of air conditioning are used an embodiment of Tube to tube fittings assembly;
Figure 1A is the partial enlarged drawing at K place among Fig. 1;
Figure 1B is the partial schematic diagram of the another kind of shape of boss of Tube to tube fittings of the present utility model;
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 outer cone sealing surface 11 female cone sealing surfaces 21
Boss 12 union nuts 2 enlarging horn connecting tubes 3
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, union nut 2 has female cone sealing surface 21, the tail end of enlarging horn connecting tube 3 passes union nut 2 leans against on the female cone sealing surface 21 of union nut 2 its flared end 31, 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, has outer cone sealing surface 11 in the end of Tube to tube fittings 1, this circular cone sealing surface 11 is provided with a boss 12 (referring to Figure 1A) outside, this boss 12 is circular-arc, is arc transition between the root of boss 12 and the conical surface 11.The projecting height of this boss 12 is 0.6mm, the flared end 31 of enlarging horn connecting tube 3 is pressed between the circular-arc boss 12 of the circular cone sealing surface 21 of union nut 2 and Tube to tube fittings 1 by locking union nut 2, fastening nut 2, make under the effect of screwing force, boss 12 makes the flared end 31 of enlarging horn connecting tube 3 produce distortion and realizes sealing, because of sealing surface reduces, overcome the big problem of inclined-plane sealing (conical surface seal) mode screw-down torque, very little because of the height of boss 12 simultaneously, 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 adopts the Tube to tube fittings (perhaps stop valve) of DN16 model, it is the enlarging horn connecting tube of φ 19 that this model Tube to tube fittings adopts diameter, test to reach the leak free seal request of 3.0Mpa air pressure equally, the Tube to tube fittings assembly of available technology adopting inclined-plane sealing generally will reach the above moment of 40N.m at least just can reach seal request, the moment that some producers adopts even reach 60～100N.m, and the Tube to tube fittings assembly that adopts sealing shape of the present utility model connects leakage test, 10～15N.m can reach sealing purpose, if adopt the moment of 60～100N.m to seal then better effects if.Therefore, compare, have the advantage that reduces screw-down torque, 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 with existing Tube to tube fittings assembly.
The outstanding camber that it should be noted that boss 12 is the size of 0.2～2.0mm, should select according to the size of the diameter of Tube to tube fittings, and the utility model is selected less height value, makes to tighten union nut by initial moment, also can not damage each part.
The shape of boss 12, what obviously be not limited to provide among an embodiment, Figure 1A is circular-arc, adopt other shapes also can, for example: the boss 12 that provides among Figure 1B is triangle, in order to improve intensity, arc transition between the root of leg-of-mutton boss 12 and the circular cone sealing surface 11, and the leg-of-mutton top rounding of boss 12.Certainly can also take half polygon-shaped or trapezoidal shape, lead round better effects if at sharp corner.Because it highly is limited at 0.2～2.0mm, size according to the diameter of Tube to tube fittings is selected this height value, therefore, even select the sharp-pointed triangle also can be because of application of force square does not cut off or damage the enlarging connecting tube greatly, obviously sharp-pointed shape will make screw-down torque more little.
Claims (4)
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, the female cone sealing surface that described union nut has, it is characterized in that: described Tube to tube fittings end has the outer cone sealing surface, has one along the outwards outstanding boss of outer cone sealing surface on described outer cone sealing surface.
2. refrigeration according to claim 1 and apparatus of air conditioning Tube to tube fittings assembly is characterized in that: the peak of described boss is 0.2～2.0mm to the distance of circular cone sealing surface.
3. refrigeration according to claim 1 and 2 and apparatus of air conditioning Tube to tube fittings assembly is characterized in that: the shape of cross section of described boss is circular-arc or is triangular shape or is half polygon-shaped.
4. refrigeration according to claim 2 and apparatus of air conditioning Tube to tube fittings assembly is characterized in that: described boss is arc transition with the root that the circular cone sealing surface is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201061578U CN201126072Y (en) | 2007-12-13 | 2007-12-13 | Pipe connection adapter assembly for refrigeration and air conditioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201061578U CN201126072Y (en) | 2007-12-13 | 2007-12-13 | Pipe connection adapter assembly for refrigeration and air conditioning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126072Y true CN201126072Y (en) | 2008-10-01 |
Family
ID=39999541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201061578U Expired - Fee Related CN201126072Y (en) | 2007-12-13 | 2007-12-13 | Pipe connection adapter assembly for refrigeration and air conditioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126072Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008796A (en) * | 2017-04-19 | 2017-08-04 | 浙江思科制冷股份有限公司 | A kind of surface cooler hydraulic pressure expanded tube joint and device |
| CN114962812A (en) * | 2022-07-13 | 2022-08-30 | 浙江三花智能控制股份有限公司 | Connecting pipe connecting device |
-
2007
- 2007-12-13 CN CNU2007201061578U patent/CN201126072Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008796A (en) * | 2017-04-19 | 2017-08-04 | 浙江思科制冷股份有限公司 | A kind of surface cooler hydraulic pressure expanded tube joint and device |
| CN114962812A (en) * | 2022-07-13 | 2022-08-30 | 浙江三花智能控制股份有限公司 | Connecting pipe connecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20161213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |