CN211252135U

CN211252135U - Coaxial pipe for automobile air conditioner

Info

Publication number: CN211252135U
Application number: CN202020008233.7U
Authority: CN
Inventors: 王智敏
Original assignee: Wuhu Tenglong Auto Parts Manufacturing Co ltd
Current assignee: Wuhu Tenglong Auto Parts Manufacturing Co ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-08-14
Anticipated expiration: 2030-01-03

Abstract

The utility model discloses a coaxial pipe for an automobile air conditioner, which comprises an inner pipe and an outer pipe, wherein the inner pipe is arranged inside the outer pipe, two ends of the inner pipe exceed two ends of the outer pipe respectively, two ends of the outer pipe are provided with flared parts respectively, the end part of the flared part is fixedly connected with the outer wall of the inner pipe in a sealing way, a high-pressure pipe through hole is arranged on the flared part, a high-pressure pipe is fixedly connected with the outer part of the high-pressure pipe through hole in a sealing way, and a supporting plate is arranged between the; the outer surface of the inner pipe is provided with grooves along the extension direction of the inner pipe, and heat conduction fins are arranged on the outer surface of the inner pipe at intervals; the bottom of backup pad is provided with the sand grip, and the sand grip is pegged graft in the recess, and the top of backup pad is provided with the arc board, the top of arc board and the inner wall in close contact with of outer tube. The utility model discloses to the heat exchange efficiency among the prior art between high-pressure tube and the low-pressure tube with in the axle pipe not enough, the big scheduling technical problem of the processing degree of difficulty improves, the utility model has the advantages of improve heat exchange efficiency and refrigeration efficiency, reduce the processing degree of difficulty.

Description

Coaxial pipe for automobile air conditioner

Technical Field

The utility model relates to a vehicle air conditioner pipeline technical field especially relates to a vehicle air conditioner is with axle pipe.

Background

With the progress of science and technology and the improvement of living standard of people, people have higher requirements on the functions of the automobile and the driving comfort, and an air conditioning system is an important component of the automobile and becomes one of the signs for measuring whether the functions of the automobile are complete or not. The automobile air conditioning system mainly comprises equipment such as a compressor, a condenser, an evaporator and the like and a pipeline system for connecting the equipment, wherein the pipeline system comprises an air conditioning refrigeration pipe, the air conditioning refrigeration pipe also comprises a low-pressure pipe and a high-pressure pipe, the low-pressure pipe of the air conditioner is low in temperature and always heated by an engine cabin, and the high-pressure pipe is high in temperature and needs heat dissipation urgently, so that in order to improve the refrigeration effect of the air conditioner, the high-pressure pipe and the low-pressure pipe are combined together in the prior art, namely the high-pressure pipe (an outer pipe) is sleeved outside the low-pressure pipe (an inner pipe) to form a coaxial pipe which is equivalent to an internal heat exchanger, areas where high-temperature (hot) refrigerant gas and low-temperature (cold) refrigerant gas flow are mutually separated in the coaxial pipe, the flow directions are opposite, high-temperature gaseous refrigerant flows out of the compressor, and low, when the two meet in the coaxial pipe, the high-temperature gaseous refrigerant is cooled, and the refrigeration efficiency of the air conditioning system is improved.

But the heat exchange efficiency between the high-pressure pipe in the coaxial pipe of current and the low pressure pipe still exists not enoughly, and coaxial pipe among the prior art includes the integral type and disconnect-type, thereby the coaxial pipe of integral type is trompil on the pipe wall and forms the cavity that supplies high temperature high pressure refrigerant gas circulation on the pipe wall, and the processing degree of difficulty is big, and the coaxial pipe of disconnect-type includes inner tube and outer tube, wherein, processes the tooth structure and processes the screw thread structure degree of difficulty all great in the outside of inner tube at the inner wall of outer tube.

To above technical problem, the utility model discloses an automobile air conditioner is with axle pipe, the utility model has the advantages of improve heat exchange efficiency, improve refrigeration efficiency, reduce the processing degree of difficulty.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art's is not enough, provides a car idle call with axle pipe to solve among the prior art with the high-pressure tube in the axle pipe and the low-pressure tube between heat exchange efficiency not enough, the processing degree of difficulty greatly waits technical problem, the utility model has the advantages of improve heat exchange efficiency, improve refrigeration efficiency, reduce the processing degree of difficulty.

The utility model discloses a following technical scheme realizes: the utility model discloses a coaxial pipe for an automobile air conditioner, which comprises an inner pipe and an outer pipe, wherein the inner pipe is arranged inside the outer pipe, the two ends of the inner pipe exceed the two ends of the outer pipe respectively, the two ends of the outer pipe are provided with flared parts respectively, the end part of the flared part is connected with the outer wall of the inner pipe in a sealing way, a high-pressure pipe through hole is arranged on the flared part, the high-pressure pipe through hole is externally connected with a high-pressure pipe in a sealing way, a supporting plate is arranged between the inner pipe and the outer pipe at intervals; the outer surface of the inner pipe is provided with a groove along the extension direction of the inner pipe, and the outer surface of the inner pipe is also provided with heat conduction fins along the extension direction of the inner pipe, wherein the heat conduction fins are positioned at the side parts of the groove; the bottom of backup pad is provided with the sand grip, and the sand grip is pegged graft and is fixed in the recess, and the top of backup pad is provided with the arc board, the top of arc board and the inner wall in close contact with of outer tube.

Furthermore, in order to better realize the sealing and fixing connection between the flared part and the outer wall of the inner pipe and between the high-pressure pipe and the high-pressure through hole, the end part of the flared part and the outer wall of the inner pipe and between the high-pressure pipe and the inner wall of the high-pressure pipe through hole are fixed by welding.

Further, for better supporting the outer tube, improve the structural strength of coaxial pipe, two are no less than to the number of backup pad to the backup pad that is no less than two centers on the surface evenly distributed of inner tube.

Furthermore, in order to carry out spacing fixed to adjacent backup pad, improve the structural strength between inner tube and the outer tube, the interval is provided with the enhancement arc muscle between two adjacent backup pads.

Furthermore, in order to prevent the outer tube from heat exchange with air and thereby causing heat loss and reduce the heat exchange efficiency between the outer tube and the inner tube, a heat insulation layer is further arranged outside the outer tube.

Furthermore, in order to improve the heat preservation and insulation effect, the heat insulation layer is made of aluminum foil.

Further, in order to improve the structural strength between inner tube and the outer tube to improve the structural strength with the axle pipe, both ends and the outer wall of inner tube and the inner wall of outer tube are all welded fastening about the backup pad.

The utility model has the advantages of it is following:

(1) the utility model discloses be provided with the insulating layer in the outside of outer tube to reduce the heat exchange between outer tube and the air, reduce calorific loss, be provided with heat conduction fin at the surface interval of inner tube simultaneously, increased the external surface area of inner tube, improved the heat exchange efficiency between outer tube and the inner tube, thereby improved vehicle air conditioner's refrigeration efficiency;

(2) the utility model discloses a set up the recess at the outer wall of inner tube, the sand grip of backup pad bottom is pegged graft and is fixed in the recess to support fixedly the outer tube, for among the prior art trompil on the pipe wall, set up the dogtooth and all simpler at the outer wall processing helicitic texture of inner tube at the inner wall of outer tube, reduced the processing degree of difficulty.

Drawings

Fig. 1 is a sectional view of the present invention;

FIG. 2 is a cross-sectional view of the outer tube;

FIG. 3 is a cross-sectional view of the middle portion of the present invention;

fig. 4 is a cross-sectional view of the inner tube.

Detailed Description

The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

Embodiment 1 discloses a coaxial pipe for an automobile air conditioner, as shown in fig. 1, including an inner pipe 1 and an outer pipe 2, the inner pipe 1 being disposed inside the outer pipe 2, and both ends of the inner pipe 1 respectively exceeding both ends of the outer pipe 2; as shown in fig. 2, flared portions 21 are respectively disposed at two ends of the outer tube 2, the flared portions 21 and the two ends of the outer tube 2 are fixed by welding, an end portion of the flared portion 21 is hermetically connected with an outer wall of the inner tube 1, specifically, the end portion of the flared portion 21 and the outer wall of the inner tube 1 are hermetically fixed by welding, and a high-pressure tube through hole 3 is disposed on the flared portion 21; as shown in fig. 1, a high-pressure pipe 4 is connected to the outside of the high-pressure pipe through hole 3 in a sealing manner, and specifically, the high-pressure pipe 4 and the inner wall of the high-pressure pipe through hole 3 are fixed in a sealing manner by welding; as shown in fig. 1 and 3, a support plate 5 is arranged between the inner pipe 1 and the outer pipe 2 at an interval, and the support plate 5 is located between the two flared parts 21; as shown in fig. 4, a groove 11 is formed in the outer surface of the inner tube 1 along the extending direction of the inner tube 1, a heat-conducting fin 12 is further arranged on the outer surface of the inner tube 1 along the extending direction of the inner tube 1, and the heat-conducting fin 12 is located at the side of the groove 11; as shown in fig. 3, the bottom of backup pad 5 is provided with sand grip 51, sand grip 51 is pegged graft and is fixed in recess 11, the top of backup pad 5 is provided with arc board 52, the top of arc board 52 and the inner wall in close contact with of outer tube 2, two are no less than to the number of backup pad 5, and be no less than two backup pad 5 around the surface evenly distributed of inner tube 1, the interval is provided with between two adjacent backup pads 5 and strengthens arc muscle 6, two tip and the outer wall of inner tube 1 and the equal welded fastening of inner wall of outer tube 2 about backup pad 5, the outside of outer tube 2 still is provided with insulating layer 7, insulating layer 7 adopts the aluminium.

The principle of the utility model is as follows: the utility model discloses be provided with insulating layer 7 in the outside of outer tube 2 to reduce the heat exchange between outer tube 2 and the air, reduce calorific loss, be provided with heat conduction fin 12 at the surface interval of inner tube 1 simultaneously, increased the external surface area of inner tube 1, improved the heat exchange efficiency between outer tube 2 and inner tube 1, thereby improved vehicle air conditioner's refrigeration efficiency; the utility model discloses a set up recess 11 at the outer wall of inner tube 1, the sand grip 51 of backup pad 5 bottom is pegged graft and is fixed in recess 11 to support fixedly outer tube 2, for among the prior art trompil on the pipe wall, set up the dogtooth at the inner wall of outer tube 2 and all simpler at the outer wall processing helicitic texture of inner tube 1, reduced the processing degree of difficulty.

Claims

1. The coaxial pipe for the automobile air conditioner comprises an inner pipe and an outer pipe, wherein the inner pipe is arranged inside the outer pipe, two ends of the inner pipe respectively exceed two ends of the outer pipe, two ends of the outer pipe are respectively provided with an expanding part, the end part of the expanding part is fixedly connected with the outer wall of the inner pipe in a sealing mode, a high-pressure pipe through hole is formed in the expanding part, and a high-pressure pipe is fixedly connected to the outside of the high-pressure pipe through hole in a sealing mode;

the outer surface of the inner tube is provided with a groove along the extension direction of the inner tube, and the outer surface of the inner tube is also provided with a heat conduction fin along the extension direction of the inner tube, wherein the heat conduction fin is positioned at the side part of the groove;

the bottom of backup pad is provided with the sand grip, the sand grip is pegged graft and is fixed in the recess, the top of backup pad is provided with the arc board, the top of arc board with the inner wall in close contact with of outer tube.

2. The coaxial pipe for an automobile air conditioner according to claim 1, wherein both of the end portion of the flared portion and the outer wall of the inner pipe and the high-pressure pipe and the inner wall of the high-pressure pipe through-hole are fixed by welding.

3. The coaxial pipe for a vehicle air conditioner according to claim 1, wherein the number of the support plates is not less than two, and the not less than two support plates are evenly distributed around the outer surface of the inner pipe.

4. The coaxial pipe for the automobile air conditioner as claimed in claim 3, wherein a reinforcing arc rib is arranged between two adjacent support plates at intervals.

5. The coaxial pipe for an automobile air conditioner according to claim 1, wherein a heat insulating layer is further provided outside the outer pipe.

6. The coaxial pipe for an automobile air conditioner as claimed in claim 5, wherein the heat insulating layer is made of aluminum foil.

7. The coaxial pipe for an automobile air conditioner according to claim 1, wherein both left and right end portions of the support plate are welded and fixed to both the outer wall of the inner pipe and the inner wall of the outer pipe.