CN208185744U - R744 air-conditioner pipe and its connection structure - Google Patents
R744 air-conditioner pipe and its connection structure Download PDFInfo
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- CN208185744U CN208185744U CN201820584486.1U CN201820584486U CN208185744U CN 208185744 U CN208185744 U CN 208185744U CN 201820584486 U CN201820584486 U CN 201820584486U CN 208185744 U CN208185744 U CN 208185744U
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Abstract
The utility model provides a kind of R744 air-conditioner pipe and its connection structure, belong to air conditioner rubber pipe technical field, air-conditioner pipe is followed successively by barrier layer, the first rubber layer, enhancement layer and the second rubber layer from the inside to the outside, and barrier layer is the bellows of stainless steel material, has the resistance to infiltration of pressure high-temp resistant excellent；R744 air-conditioning pipe connecting structure, including crossover sub, steel bushing and the core pipe inside air-conditioner pipe, core pipe outer diameter is consistent with barrier layer internal diameter, and the interconnecting piece and air-conditioner pipe of crossover sub one end cooperate, and interconnecting piece is embedded between barrier layer and the first rubber layer；Steel bushing is set in the outer wall junction of air-conditioner pipe and crossover sub, and crossover sub is connected with steel bushing by clamping structure.The technical solution can satisfy the requirement of R744 working medium high temperature and pressure, can guarantee the connectivity robustness and resistance to compression stability of crossover sub and air-conditioner pipe.
Description
Technical field
The utility model belongs to air conditioner rubber pipe technical field, is to be related to a kind of R744 air-conditioner pipe and its company more specifically
Binding structure.
Background technique
Currently, the refrigerant medium in air conditioning for automobiles is also quickly updating with the fast development of new-energy automobile, R744 makees
For a kind of natural working medium, ozone layer is not destroyed, global warming potentiality GWP is 1.But with the change of working medium, air-conditioning system
The component of the inside has changed, and the performance requirement of air-conditioner pipe and connection structure also changes correspondingly.
General air-conditioner pipe structure, is successively barrier layer, rubber layer, enhancement layer, rubber layer from inside to outside, applying pressure is 15
~35bar uses 140 DEG C of maximum temperature.The connection type of general air-conditioning system hose assembly part is laggard using coating technique
Row withholds riveted, to realize the effect of sealing, core pipe structure is generally pawl type or groove type, and core pipe is using preceding needing to carry out
Coat one layer of glue, can be carried out after drying using, withhold it is general select three to withhold form, the stable structure is durable weather-proof without micro-
Seep phenomenon.But with the application of R744 working medium, operating pressure improves 3~4 times, and operating temperature is promoted to 165 DEG C；
General air-conditioner pipe and core pipe connection structure are unable to satisfy the high temperature and pressure requirement of R744 working substance system.
Utility model content
The purpose of this utility model is to provide a kind of R744 air-conditioner pipe and its connection structures, to solve to deposit in the prior art
Air-conditioner pipe and its connection structure be unable to satisfy R744 working medium high temperature and pressure require the technical issues of.
In order to achieve the above purposes, the technical solution adopted by the utility model is: provides a kind of R744 air-conditioner pipe, the air-conditioning
Pipe is followed successively by barrier layer, the first rubber layer, enhancement layer and the second rubber layer from the inside to the outside, and the barrier layer is stainless steel material
Bellows.
Further, the enhancement layer is formed by braided steel wire.
Further, first rubber layer and the second rubber layer are the rubber material of high temperature resistant grade.
The utility model also provides a kind of R744 air-conditioning pipe connecting structure, including crossover sub, steel bushing and is set to described
Core pipe inside air-conditioner pipe, the outer diameter of the core pipe is consistent with the internal diameter of the barrier layer, and one end of the crossover sub is equipped with
Interconnecting piece for cooperating with the air-conditioner pipe, the interconnecting piece be embedded in the air-conditioner pipe barrier layer and the first rubber layer it
Between；The steel bushing is set in the outer wall junction of the air-conditioner pipe Yu the crossover sub, the crossover sub and the steel bushing
It is connected by clamping structure.
Further, the clamping structure includes the annular convex platform being set in the crossover sub outer circle and is set to institute
State the annular stop platform of steel bushing bore orifice, the outer circle tight fit of the inner hole of the limiting stand and the boss.
Further, the inner hole of the steel bushing is equipped at intervals with multiple annular protrusions, the inner wall and the air-conditioning of the protrusion
The outer wall of pipe contacts.
Further, the end of the interconnecting piece is equipped with guide cone, and the guide cone is plugged in the barrier of the air-conditioner pipe
Between layer and the first rubber layer, the diameter of the bigger diameter end of the guide cone is greater than the outer diameter of the interconnecting piece.
Further, between the bigger diameter end of the guide cone and the boss be equipped with positioning table, the positioning table with it is described
The annular groove for installing the first sealing ring is equipped between boss.
Further, the end of the air-conditioner pipe is equipped with connector, and one end of the connector is interior with the air-conditioner pipe
Portion's barrier layer is fixedly linked, the other end outer circle of the connector and the inner hole of the crossover sub；Outside the core pipe
Diameter is not more than the diameter of bore of the connector.
Further, the outer circle of the connector is equipped with seal groove, is equipped with the second sealing ring in the seal groove.
The beneficial effect of R744 air-conditioner pipe provided by the utility model and its connection structure is: compared with prior art,
The utility model R744 air-conditioner pipe uses the barrier layer structure excellent with the resistance to infiltration of pressure high-temp resistant, can make its anti-permeability performance
Reach 0, while the enhancement layer of the good rubber layer and good pressure-resistant performance of softness can satisfy wanting for R744 working medium high temperature and pressure
It asks, plays the role of to protection environment positive；The utility model R744 air-conditioning pipe connecting structure is by by one end of crossover sub
It is embedded between the barrier layer of air-conditioning tube end and the first rubber layer, guarantees the connectivity robustness of crossover sub and air-conditioner pipe, together
Clamping structure between Shi Liyong steel bushing and crossover sub connects crossover sub and air-conditioner pipe, the core pipe inside air-conditioner pipe
The intensity for improving junction simultaneously, ensure that the resistance to compression stability of connection structure.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of R744 air-conditioner pipe provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of R744 air-conditioning pipe connecting structure provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram of crossover sub in Fig. 2；
Fig. 4 is the structural schematic diagram of connector in Fig. 2；
Fig. 5 is suit directional diagram of the steel bushing when installing on air-conditioner pipe in Fig. 2；
Wherein, each appended drawing reference in figure:
1- barrier layer, the first rubber layer of 2-, 3- enhancement layer, the second rubber layer of 4-, 5- air-conditioner pipe, 6- crossover sub, 7- steel
Set, 8- core pipe, 9- interconnecting piece, 10- boss, 11- limiting stand, 12- protrusion, 13- guide cone, 14- positioning table, 15- annular groove,
16- connector, 17- seal groove.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
Fig. 1-5 is please referred to, now R744 air-conditioner pipe provided by the utility model and its connection structure are illustrated.Such as Fig. 1
Shown in R744 air-conditioner pipe, the air-conditioner pipe 5 is followed successively by barrier layer 1, the first rubber layer 2, enhancement layer 3 and the second rubber from the inside to the outside
Glue-line 4, the barrier layer 1 are the bellows of stainless steel material, can enhance the pressure high-temp resistant anti-permeability performance of air-conditioner pipe.
As a kind of specific embodiment of R744 air-conditioner pipe provided by the utility model, the enhancement layer 3 is compiled by steel wire
It knits, the pressure-resistant stability of air-conditioner pipe can be enhanced, play the role of protection.
Further, a kind of specific embodiment as R744 air-conditioner pipe provided by the utility model, first rubber
Glue-line 2 and the second rubber layer 4 are the rubber material of high temperature resistant grade, can enhance the flexibility and heat-resisting quantity of air-conditioner pipe
Energy.
The utility model also provides a kind of R744 air-conditioning pipe connecting structure, as shown in Figure 2-5, including crossover sub 6, steel bushing
7 and the core pipe 8 that is set to inside the air-conditioner pipe 5, the outer diameter of the core pipe 8 is consistent with the internal diameter of the barrier layer 1, and described turn
One end of changing-over head 6 is equipped with the interconnecting piece 9 for cooperating with the air-conditioner pipe 5, and the interconnecting piece 9 is embedded in the air-conditioner pipe 5
Barrier layer 1 and the first rubber layer 2 between；The outer wall that the steel bushing 7 is set in the air-conditioner pipe 5 and the crossover sub 6 connects
Place is met, the crossover sub 6 is connected with the steel bushing 7 by clamping structure.
R744 air-conditioner pipe provided by the utility model and its connection structure have structural stability compared with prior art
Good, high-temperature-resistant high-pressure-resistant characteristic, by using the barrier layer structure with bellows stainless steel material, in heatproof and resistance to pressure
Energy aspect all has greatly improved, and in addition R744 is natural working medium, low in cost, discharge amount minimum living retaining ring border；This is practical new
One end of crossover sub by being embedded in the barrier layer and the first rubber layer of air-conditioning tube end by type R744 air-conditioning pipe connecting structure
Between, guarantee the connectivity robustness of crossover sub and air-conditioner pipe, while will using the clamping structure between steel bushing and crossover sub
Crossover sub is connected with air-conditioner pipe, and the core pipe inside air-conditioner pipe can be improved the intensity of junction, is guaranteeing quick assembling
While, also ensure the resistance to compression stability of connection structure.
Further, Fig. 2,5 are please referred to, one kind as R744 air-conditioning pipe connecting structure provided by the utility model is specific
Embodiment, the clamping structure include the annular convex platform 10 being set in 6 outer circle of crossover sub and are set to the steel
The annular stop platform 11 of 7 bore orifices is covered, the outer circle tight fit of the inner hole of the limiting stand 11 and the boss 10 realizes conversion
The secured connection of connector and air-conditioner pipe.
When assembly, steel bushing is set in the outside of air-conditioner pipe in advance, by core pipe out of the insertion of one end of air-conditioner pipe air-conditioner pipe,
And the interconnecting piece of crossover sub is embedded in the end of air-conditioner pipe, then steel bushing is pushed at crossover sub, passes through steel bushing end
The tight fit of annular convex platform, realizes the connection of crossover sub and air-conditioner pipe on the annular stop platform and crossover sub outer circle in portion.
Further, referring to Fig. 2, a kind of specific reality as R744 air-conditioning pipe connecting structure provided by the utility model
Mode is applied, the inner hole of the steel bushing 7 is equipped at intervals with multiple annular protrusions 12, raised 12 inner wall and the air-conditioner pipe 5
Outer wall contact.It can make steel bushing is firm to be set on air-conditioner pipe by multiple annular protrusions in steel bushing.
Further, Fig. 2,3 are please referred to, one kind as R744 air-conditioning pipe connecting structure provided by the utility model is specific
The end of embodiment, the interconnecting piece 9 is equipped with guide cone 13, and the guide cone 13 is plugged in the barrier layer 1 of the air-conditioner pipe 5
And first between rubber layer 2, the diameter of the bigger diameter end of the guide cone 13 is greater than the outer diameter of the interconnecting piece 9.Utilize guide cone
It can facilitate between the barrier layer and the first rubber layer of interconnecting piece insertion air-conditioner pipe, utilize the elastic by crossover sub of rubber material
It holds tightly outside the barrier layer of air-conditioner pipe, realizes the connection of crossover sub and air-conditioner pipe.
In addition, for convenience in core pipe insertion air-conditioner pipe the guiding conical surface can be equipped in the end of core pipe, to reduce insertion resistance
Power.
Further, Fig. 2,3 are please referred to, one kind as R744 air-conditioning pipe connecting structure provided by the utility model is specific
Embodiment, between the bigger diameter end and the boss 10 of the guide cone 13 be equipped with positioning table 14, the positioning table 14 with it is described
The annular groove 15 for installing the first sealing ring is equipped between boss 10.First sealing ring is set in annular groove, while the
One sealing ring is placed in the card slot between the limiting stand of steel bushing and adjacent protrusion, can enhance the frictional force between steel bushing and core pipe.
Further, referring to Fig. 2, a kind of specific reality as R744 air-conditioning pipe connecting structure provided by the utility model
Mode is applied, the end of the air-conditioner pipe 5 is equipped with connector 16, the inside resistance of one end of the connector 16 and the air-conditioner pipe 5
Interlayer 1 is fixedly linked, the inner hole of the other end outer circle of the connector 16 and the crossover sub 6；Outside the core pipe 8
Diameter is not more than the diameter of bore of the connector 6.The barrier layer of connector and air-conditioner pipe is fixed by laser welding, Neng Gouti
The resistance to compression stability of high connection structure.
Further, Fig. 2,4 are please referred to, one kind as R744 air-conditioning pipe connecting structure provided by the utility model is specific
Embodiment, the outer circle of the connector 16 are equipped with seal groove 17, are equipped with the second sealing ring in the seal groove 17.Second is close
Seal can be further ensured that the sealing of connection structure using the second sealing ring for being sealed between core pipe and crossover sub
The characteristic of performance and high-temperature-resistant high-pressure-resistant further increases the stability of structure.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1.R744 air-conditioner pipe, it is characterised in that: the air-conditioner pipe is followed successively by barrier layer, the first rubber layer, enhancement layer from the inside to the outside
And second rubber layer, the barrier layer are the bellows of stainless steel material.
2. R744 air-conditioner pipe as described in claim 1, it is characterised in that: the enhancement layer is formed by braided steel wire.
3. R744 air-conditioner pipe as described in claim 1, it is characterised in that: first rubber layer and the second rubber layer are resistance to
The rubber material of high thermal level.
4.R744 air-conditioning pipe connecting structure, it is characterised in that: including crossover sub, steel bushing and be set to such as claim 1-3 appoint
Core pipe inside one air-conditioner pipe, the outer diameter of the core pipe is consistent with the internal diameter of the barrier layer, and the one of the crossover sub
End is equipped with the interconnecting piece for cooperating with the air-conditioner pipe, and the interconnecting piece is embedded in barrier layer and the first rubber of the air-conditioner pipe
Between glue-line；The steel bushing is set in the outer wall junction of the air-conditioner pipe Yu the crossover sub, the crossover sub and institute
Steel bushing is stated to be connected by clamping structure.
5. R744 air-conditioning pipe connecting structure as claimed in claim 4, it is characterised in that: the clamping structure includes being set to institute
State annular convex platform in crossover sub outer circle and be set to the annular stop platform of the steel bushing bore orifice, the limiting stand it is interior
The outer circle tight fit in hole and the boss.
6. R744 air-conditioning pipe connecting structure as claimed in claim 4, it is characterised in that: the inner hole of the steel bushing is equipped at intervals with more
The inner wall of a annular protrusion, the protrusion is contacted with the outer wall of the air-conditioner pipe.
7. R744 air-conditioning pipe connecting structure as claimed in claim 5, it is characterised in that: the end of the interconnecting piece is equipped with guiding
Cone, the guide cone is plugged between the barrier layer and the first rubber layer of the air-conditioner pipe, the bigger diameter end of the guide cone it is straight
Diameter is greater than the outer diameter of the interconnecting piece.
8. R744 air-conditioning pipe connecting structure as claimed in claim 7, it is characterised in that: the bigger diameter end of the guide cone with it is described
It is equipped with positioning table between boss, the annular groove for installing the first sealing ring is equipped between the positioning table and the boss.
9. R744 air-conditioning pipe connecting structure as claimed in claim 4, it is characterised in that: the end of the air-conditioner pipe is equipped with connection
Head, one end of the connector and the inner barrier layer of the air-conditioner pipe are fixedly linked, the other end outer circle of the connector with
The inner hole of the crossover sub；The outer diameter of the core pipe is not more than the diameter of bore of the connector.
10. R744 air-conditioning pipe connecting structure as claimed in claim 9, it is characterised in that: the outer circle of the connector is equipped with
Seal groove, the seal groove is interior to be equipped with the second sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820584486.1U CN208185744U (en) | 2018-04-23 | 2018-04-23 | R744 air-conditioner pipe and its connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820584486.1U CN208185744U (en) | 2018-04-23 | 2018-04-23 | R744 air-conditioner pipe and its connection structure |
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| Publication Number | Publication Date |
|---|---|
| CN208185744U true CN208185744U (en) | 2018-12-04 |
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ID=64434585
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820584486.1U Active CN208185744U (en) | 2018-04-23 | 2018-04-23 | R744 air-conditioner pipe and its connection structure |
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| CN (1) | CN208185744U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317343A (en) * | 2018-04-23 | 2018-07-24 | 阔丹凌云汽车胶管有限公司 | R744 air-conditioner pipes and its connection structure |
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2018
- 2018-04-23 CN CN201820584486.1U patent/CN208185744U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317343A (en) * | 2018-04-23 | 2018-07-24 | 阔丹凌云汽车胶管有限公司 | R744 air-conditioner pipes and its connection structure |
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