CN211552065U

CN211552065U - Corrugated vacuum tube

Info

Publication number: CN211552065U
Application number: CN201922021687.8U
Authority: CN
Inventors: 林利军
Original assignee: Jiaxing Jiancheng Electric Appliance Co ltd
Current assignee: Jiaxing Jiancheng Electric Appliance Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-09-22
Anticipated expiration: 2029-11-20

Abstract

The utility model discloses a corrugated vacuum tube, including outer tube and the inner tube of cover in the outer tube and paralleling with the outer tube, the both ends of outer tube are connected respectively with the both ends of inner tube, form the vacuum layer between outer tube and the inner tube, and the inner tube is including the air inlet pipeline section and the ripple pipeline section that communicate in proper order, and the one end of ripple pipeline section is equipped with the lower connecting portion that are used for connecting the air inlet pipeline section, and the other end is equipped with the last connecting portion that are used for connecting the outer tube, and the outer tube is connected to the air inlet pipeline section, and the surface that lies in vacuum layer one side on the. The utility model discloses a corrugated vacuum tube compares in current spiral vacuum tube, and preparation simple process easily the shaping has reduced the rejection rate in the production process, the effectual product quality of having guaranteed, product long service life. Meanwhile, the air flow has small wind resistance and short stroke in the vacuum tube, and the flow rate of the gas cannot be reduced.

Description

Corrugated vacuum tube

Technical Field

The utility model belongs to the technical field of the vacuum tube, concretely relates to ripple formula vacuum tube.

Background

The air type solar heat collector is widely applied to high and cold areas with low temperature. The air type solar heat collector needs vacuum tubes. CN 204787363U discloses a bi-pass spiral vacuum tube structure that can be used to air formula solar collector, and this bi-pass spiral vacuum tube structure can utilize the air that flows as heat transfer medium under the effect of relevant accessory, guarantees that the heat collector possesses the use characteristics that do not have stifled, no corruption, no leakage, no overheat, easy maintenance, guarantees that air formula solar collector can be used in high cold area safety, permanent, low-cost. The spiral structure that this vacuum tube structure adopted has reduced the vacuum tube in the use because of the possibility of the vacuum tube fried pipe that the temperature rise leads to, however, there is the processing design difficulty in the inner tube of spiral shape, to processing equipment and the high shortcoming of operating workman technical requirement. Meanwhile, airflow needs to circulate spirally in the vacuum tube, so that the stroke is increased, the wind resistance is increased due to the constantly changed direction, the air circulation efficiency is reduced, and the air forms impact acting force on the inner wall of the vacuum tube. The vacuum tube is not only subjected to thermal stress caused by thermal expansion and cold contraction, but also subjected to impact force generated by air flow, so that the vacuum tube is cracked, and the service life of the vacuum tube is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a corrugated vacuum tube, is including outer tube and the inner tube that overlaps in the outer tube and parallel with the outer tube, and the both ends of outer tube are connected respectively with the both ends of inner tube, form the vacuum layer between outer tube and the inner tube, and the inner tube is including the air inlet pipeline section and the ripple pipeline section that communicate in proper order, and the one end of ripple pipeline section is established to connecting portion down, and the other end is established to connecting portion.

Preferably, the corrugated pipe section is provided with 2-7 sections of corrugated units.

Preferably, in the above technical solution, the inner diameters of the lower connecting portion and the upper connecting portion are equal, and the inner diameter of the air inlet pipe section is larger than the inner diameter of the lower connecting portion.

Preferably, in the above technical solution, the outer tube is a circular tube.

Preferably, in the above technical solution, the number of the bellows sections in the inner tube is plural, the lower connecting portion of the previous bellows section is communicated with the upper connecting portion of the next bellows section, the lower connecting portion of the lowest bellows section is communicated with the air intake section, and the upper connecting portion of the uppermost bellows section is communicated with the outer tube.

Preferably, an anti-cracking device is arranged in the vacuum layer.

Preferably as above-mentioned technical scheme, anti cracking device is including the lantern ring of cover on lower connecting portion, the upper end of the lantern ring is connected with a plurality of shell fragments, the shell fragment is around the whole row distribution of the axial lead circumference of lower connecting portion, the clearance has between the adjacent shell fragment, the shell fragment is including the first rake that connects gradually, the second rake, the third rake, form the first supporting part that contacts with the outer tube inner wall between first rake and the second rake, form the second supporting part that contacts with the inner tube between second rake and the third rake, the end of third rake forms the portion of bending down after bending towards the interior pipe direction after contacting with the outer tube inner wall, first rake fixed connection is in the upper end of the lantern ring, the lower extreme of the lantern ring is bent towards the outer tube direction and is formed the portion of bending.

Preferably, the first inclined portion, the second inclined portion, and the third inclined portion are respectively provided with through holes.

Preferably, the number of the elastic pieces is 4.

The utility model has the advantages that: the utility model discloses a corrugated vacuum tube compares in current spiral vacuum tube, and preparation simple process easily the shaping has reduced the rejection rate in the production process, the effectual product quality of having guaranteed, product long service life. Meanwhile, the air flow has small wind resistance and short stroke in the vacuum tube, and the flow rate of the gas cannot be reduced. The corrugated structure of the corrugated pipe section can also adapt to different illumination angles, and the light receiving area is increased, so that the efficiency of the vacuum pipe is improved. The inner diameter of the inner pipe and the inner diameters of the inlet and the outlet can be made large, so that the vacuum pipe can also use fluid such as water as a medium and cannot be influenced by factors such as water scale and the like.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the anti-splitting device;

FIG. 3 is a schematic structural view of the spring plate;

fig. 4 is another schematic structural diagram of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1, a corrugated vacuum tube comprises an outer tube 1 and an inner tube sleeved in the outer tube 1 and parallel to the outer tube, wherein two ends of the outer tube 1 are respectively connected with two ends of the inner tube, a vacuum layer 2 is formed between the outer tube 1 and the inner tube, the inner tube comprises an air inlet tube section 3 and a corrugated tube section 4 which are sequentially communicated, one end of the corrugated tube section 4 is arranged to be a lower connecting part 5, the other end of the corrugated tube section is arranged to be an upper connecting part 6, and the air inlet tube section 3 is connected with the outer tube. The outer tube 1 is provided with a vacuum pumping hole 7 for pumping vacuum, and the vacuum pumping hole 7 is closed after the vacuum layer 2 forms vacuum. The corrugated pipe section 4 has certain deformation capacity, the vacuum pipe is not easy to crack after being heated, air flows in the vacuum pipe in a straight line, the direction does not need to be changed, the wind resistance is small, and the impact force on the vacuum pipe is small. Further, the bellows section 4 has 2-7 bellows units, preferably 6 bellows units. Ensuring a sufficient elastic deformability of the bellows segment 4. Further, the inner diameters of the lower connecting portion 5 and the upper connecting portion 6 are equal, and the inner diameter of the air inlet pipe section 3 is larger than that of the lower connecting portion 5. Further, the outer tube 1 is a circular tube. The corrugated structure of the corrugated pipe section 4 can also adapt to different illumination angles, and the light receiving area is increased, so that the efficiency of the vacuum pipe is improved.

Example two

As shown in fig. 1-3, a corrugated vacuum tube comprises an outer tube 1 and an inner tube sleeved in the outer tube 1 and parallel to the outer tube, wherein two ends of the outer tube 1 are respectively connected with two ends of the inner tube, a vacuum layer 2 is formed between the outer tube 1 and the inner tube, the inner tube comprises an air inlet tube section 3 and a corrugated tube section 4 which are sequentially communicated, one end of the corrugated tube section 4 is arranged as a lower connecting part 5, the other end is arranged as an upper connecting part 6, and the air inlet tube section 3 is connected with the outer tube 1. Furthermore, an anti-cracking device 8 is arranged in the vacuum layer 2, and the anti-cracking device 8 is used for preventing the fracture of the joint of the lower connecting part 5 and the air inlet pipe section 3. Although the bellows section 4 of the bellows type has a low wind resistance, it is not completely free of wind resistance. During the circulation of air, bellows section 4 produces easily and rocks, and the air current gets into bellows section 4 from air intake pipe section 3, and bellows section 4 and air intake pipe section 3's junction is easy to be cracked, utilizes crack control device to stabilize bellows section 4, reduces its vibration range, extension vacuum tube life. Further, anti-cracking device is including the lantern ring 9 of cover on lower connecting portion 5, the upper end of lantern ring 9 is connected with a plurality of shell fragments, the shell fragment is around the axial lead circumference permutation distribution of lower connecting portion 5, clearance 10 has between the adjacent shell fragment, the shell fragment is including the first rake 11 that connects gradually, second rake 12, third rake 13, form the first supporting part 14 that contacts with 1 inner wall of outer tube between first rake 11 and the second rake 12, form the second supporting part 15 that contacts with the inner tube between second rake 12 and the third rake 13, the end of third rake 13 forms down portion of bending 16 after bending towards the interior pipe direction after contacting with 1 inner wall of outer tube, first rake 11 fixed connection is in the upper end of lantern ring 9, the lower extreme of lantern ring 9 bends towards 1 direction of outer tube and forms upper bending 17. Lower connecting portion 5 forms through shell fragment and air inlet pipe section 3, outer tube 1 and is connected, can pass through the shell fragment with the vibration of bellows section 4 and transmit for outer tube 1 and air inlet pipe section 3 for each part vibration range of vacuum tube is unanimous, avoids the junction fracture of each part. The plurality of spring plates are beneficial to forming stable and balanced acting force.

Further, the first inclined portion 11, the second inclined portion 12, and the third inclined portion 13 are respectively provided with through holes 18. The through holes 18 can improve the elasticity of the elastic sheet and reduce the weight of the vacuum tube.

Furthermore, the number of the elastic sheets is 4.

EXAMPLE III

As shown in fig. 1-4, a corrugated vacuum tube comprises an outer tube 1 and an inner tube sleeved in the outer tube 1 and parallel to the outer tube, wherein two ends of the outer tube 1 are respectively connected with two ends of the inner tube, a vacuum layer 2 is formed between the outer tube 1 and the inner tube, the inner tube comprises an air inlet tube section 3 and a corrugated tube section 4 which are sequentially communicated, one end of the corrugated tube section 4 is arranged as a lower connecting part 5, the other end is arranged as an upper connecting part 6, and the air inlet tube section 3 is connected with the outer tube 1. Furthermore, the number of the corrugated pipe sections 4 in the inner pipe is two, the lower connecting part 5 of the previous corrugated pipe section 4 is communicated with the upper connecting part 6 of the next corrugated pipe section 4, the lower connecting part of the lowest corrugated pipe section 4 is communicated with the air inlet pipe section, and the upper connecting part of the uppermost corrugated pipe section is communicated with the outer pipe. The joints of the two corrugated pipe sections 4 and the joints of the corrugated pipe sections 4 and the air inlet pipe sections 3 are provided with anti-cracking devices 8, and the structures of the anti-cracking devices 8 are the same as those of the anti-cracking devices 8 in the second embodiment. A plurality of bellows section 4 link to each other in proper order, can increase the length of vacuum tube like this, under the prerequisite of guaranteeing structural strength, increase the elasticity of inner tube.

Having described in detail preferred embodiments of the present invention, it is to be understood that modifications and variations can be made by persons skilled in the art without inventive faculty, and therefore all technical solutions which can be obtained by a person skilled in the art based on the concepts of the present invention through logic analysis, reasoning or limited experimentation will fall within the scope of protection defined by the claims.

Claims

1. The utility model provides a corrugated vacuum tube which characterized in that, including outer tube and the inner tube that overlaps in the outer tube and parallels with the outer tube, the both ends of outer tube are connected respectively with the both ends of inner tube, form the vacuum layer between outer tube and the inner tube, and the inner tube is including the air inlet pipeline section and the corrugated pipe section that communicate in proper order, and the one end of corrugated pipe section is established to connecting portion down, and the other end is established to connecting portion.

2. The bellows-type vacuum tube of claim 1, wherein the bellows segment has 2-7 bellows units.

3. The bellows-type vacuum tube of claim 1, wherein the lower and upper connecting portions have an equal inner diameter, and the intake duct section has an inner diameter greater than the inner diameter of the lower connecting portion.

4. The bellows-type vacuum tube according to claim 1, wherein said outer tube is a round tube.

5. The bellows-type vacuum tube according to claim 1, wherein the number of the bellows segments in the inner tube is plural, the lower connecting portion of the previous bellows segment communicates with the upper connecting portion of the next bellows segment, the lower connecting portion of the lowermost bellows segment communicates with the intake duct segment, and the upper connecting portion of the uppermost bellows segment communicates with the outer tube.

6. A bellows-type vacuum tube according to claim 1 or 5, wherein an anti-cracking means is provided in the vacuum layer.

7. A corrugated vacuum tube as claimed in claim 6, wherein the anti-cracking means comprises a collar fitted over the lower connecting portion, the upper end of the collar is connected with a plurality of spring plates, the spring plates are arranged in an array around the axial center of the lower connecting portion, gaps are provided between adjacent spring plates, each spring plate comprises a first inclined portion, a second inclined portion and a third inclined portion which are connected in sequence, a first supporting portion contacting with the inner wall of the outer tube is formed between the first inclined portion and the second inclined portion, a second supporting portion contacting with the inner tube is formed between the second inclined portion and the third inclined portion, the end of the third inclined portion is bent towards the inner wall of the outer tube after contacting with the inner wall of the outer tube to form a lower bent portion, the first inclined portion is fixedly connected to the upper end of the collar, and the lower end of the collar is.

8. The bellows-type vacuum tube according to claim 7, wherein the first, second and third inclined portions are respectively provided with through holes.

9. The bellows-type vacuum tube of claim 8, wherein the number of the resilient tabs is 4.