CN112874263B - Internal conduction type heat transfer coaxial tube - Google Patents
Internal conduction type heat transfer coaxial tube Download PDFInfo
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- CN112874263B CN112874263B CN202110216722.0A CN202110216722A CN112874263B CN 112874263 B CN112874263 B CN 112874263B CN 202110216722 A CN202110216722 A CN 202110216722A CN 112874263 B CN112874263 B CN 112874263B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00321—Heat exchangers for air-conditioning devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Mechanical Engineering (AREA)
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Abstract
The invention relates to the field of coaxial tubes, in particular to an inner guide type heat transfer coaxial tube, which comprises the following components: the high-pressure inner pipe is sleeved in the low-pressure outer pipe, and the high-pressure inner pipe is longer than the low-pressure outer pipe and extends outwards; the two side ends of the high-pressure inner pipe and the low-pressure outer pipe are respectively buried in the two connectors; the first communication pipe is buried in the connector, one end of the first communication pipe is communicated with the high-pressure inner pipe, and the other end of the first communication pipe is communicated with an external heat source; the second communicating pipe is buried in the connector, one end of the second communicating pipe is communicated with the low-pressure outer pipe, and the other end of the second communicating pipe is communicated with an external cold source; the outer pipe sleeve is sleeved on the outer side of the low-pressure outer pipe, and two ends of the outer pipe sleeve are fixedly connected with the connector respectively. The invention adopts the structure that the outer pipe is a cold pipe and the inner pipe is a heat pipe, so that the inner pipe can fully exchange heat with the outer pipe, and the heat dissipation of the inner pipe into the engine room is greatly reduced.
Description
Technical Field
The invention relates to the field of coaxial tubes, in particular to an inner guide type heat transfer coaxial tube.
Background
In the automobile air-conditioning industry, an automobile air-conditioning coaxial pipe is also called an intermediate heat exchanger, and heat exchange is realized by respectively introducing a cold source and a heat source into an inner pipe and an outer pipe of the coaxial pipe, and the traditional coaxial pipe has the following defects:
1. the coaxial outer tube is typically a high pressure heat pipe and the coaxial inner tube is typically a low pressure cold pipe. When the structure is adopted, the high-pressure heat pipe is close to one side of the low-pressure cold pipe to realize normal heat exchange, but one side far away from the low-pressure cold pipe cannot completely realize heat exchange, most of heat is overflowed into the engine, the heat exchange rate is not high, and meanwhile, the overheating condition of the engine can be caused.
2. Referring to the M position of FIG. 1, the outer tube of the conventional coaxial tube is welded with a branch tube as a cold source for guiding the branch tube, and in order to match the shape of an engine, the branch tube is usually only arranged in an inclined manner, and meanwhile, if the branch tube is perpendicular to the outer tube, noise is easily generated. The outer pipe needs to be obliquely punched by adopting the setting mode, the punching difficulty is high, the welding is needed after the punching is finished, and the blocking welding condition is easy to occur due to the fact that the branch pipe is thin, so that the coaxial pipe is scrapped. Meanwhile, even if the phenomenon of complete blocking welding does not occur, partial blocking welding can cause abnormal sound at the branch pipe and affect the use.
3. Referring to fig. 1, the welding position of the inner tube and the outer tube has two positions a and B, wherein the welding position a is visible, the welding position B is blind welding, the welding process is invisible, and the welding quality is uncontrollable. The B part is welded in the deep buried outer pipe, so that the rework can not be performed once the welding is incomplete, the coaxial pipe can only be used as waste for treatment, and the rejection rate is high.
4. The gap between the inner tube and the outer tube of the traditional coaxial tube is smaller, and the gap can be further reduced during bending, so that the cold source of the outer tube is not smooth, and the blockage is formed.
5. The outer tube of the traditional coaxial tube has harder profile, the inner tube has softer profile, and the inner tube has higher requirement on materials and higher cost.
6. The traditional coaxial pipe is provided with the branch pipes, so that at least two pressing plates are arranged to respectively fix the branch pipes and the outer pipes when the coaxial pipe is installed and fixed.
Disclosure of Invention
In order to solve the technical problems, the invention provides an inner guide type heat transfer coaxial tube.
In order to solve the technical problems, the invention adopts the following technical scheme:
an internally conductive heat transfer coaxial tube comprising:
a high-pressure inner pipe is arranged on the inner pipe,
the high-pressure inner pipe is sleeved in the low-pressure outer pipe, and is longer than the low-pressure outer pipe and extends outwards;
the two side ends of the high-pressure inner pipe and the low-pressure outer pipe are respectively buried in the two connectors;
the first communication pipe is buried in the connector, one end of the first communication pipe is communicated with the high-pressure inner pipe, and the other end of the first communication pipe is communicated with an external heat source;
the second communicating pipe is buried in the connector, one end of the second communicating pipe is communicated with the low-pressure outer pipe, and the other end of the second communicating pipe is communicated with an external cold source;
the outer pipe sleeve is sleeved on the outer side of the low-pressure outer pipe, and two ends of the outer pipe sleeve are fixedly connected with the connector respectively.
Further, the high-pressure inner tube comprises an inner conducting tube and an outer connecting tube, the inner conducting tube is sleeved and fixed in the outer connecting tube, the outer connecting tube is sleeved in the low-pressure outer tube, and the end part of the inner conducting tube is communicated with the first connecting tube.
Further, a communicating hole is formed in the side face of the pipe wall of the low-pressure outer pipe, the communicating hole is communicated with the second communicating pipe, and an insertion hole is formed in the end portion of the low-pressure outer pipe so that the outer connecting pipe can be conveniently inserted.
Further, the outer connecting pipe is fixedly connected with the low-pressure outer pipe through threads.
Further, a welding notch is formed in the bottom of the connector, and is formed in the position, beyond the low-pressure outer tube, of the high-pressure inner tube, and the part, beyond the high-pressure inner tube, of the low-pressure outer tube is exposed.
Further, the device also comprises a first connecting head and a second connecting head, wherein one end of the first connecting head is fixed with the first connecting pipe, the other end of the first connecting head is communicated with an external heat source, one end of the second connecting head is fixed with the second connecting pipe, and the other end of the second connecting head is communicated with an external cold source.
Further, the connector further comprises a pressing plate, wherein a first fixing hole and a second fixing hole which are respectively used for fixing the first connector and the second connector are formed in two sides of the pressing plate, a threaded hole is formed in the center of the pressing plate, and the pressing plate is fixedly connected with the upper surface of the connector through the threaded hole and a screw.
Therefore, compared with the traditional technical means, the technical means adopted by the invention has the following beneficial effects:
1. the invention adopts the structure that the outer pipe is a cold pipe and the inner pipe is a heat pipe, so that the inner pipe can fully exchange heat with the outer pipe, and the heat dissipation of the inner pipe into the engine room is greatly reduced.
2. The invention cancels the design of the branch pipe, thereby avoiding the problem of welding blockage of the traditional coaxial pipe branch pipe and solving the problem of abnormal sound of the traditional coaxial pipe.
3. The sealing and connecting problems between the inner pipe and the outer pipe are not dependent on the mutual welding, but are solved through the connector, and the connector is adopted, so that the part needing to be welded is invisible to be visible, the welding quality is controllable, and the yield is greatly improved.
4. The gap between the outer tube and the inner tube does not need to be bent, so that the blockage phenomenon can not occur. Meanwhile, as bending is not needed, the adopted materials are single, and the production cost is low.
5. The aperture of the inner tube can be selected according to the heat exchange rate, and the inner tube can be suitable for various vehicle types.
6. The invention omits the design of the branch pipes, so that the coaxial pipes can be fixed by only one pressing plate, and the invention is convenient and quick and has low cost.
Drawings
The foregoing and other objects, features, and advantages of the invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of a conventional coaxial tube;
FIG. 2 is a schematic cross-sectional view of the present invention;
fig. 3 is a schematic view of the structure of the weld spot of fig. 2 after the weld spot is welded.
Wherein: 1. high-pressure inner pipe, 11 inner conducting pipe, 12 outer connecting pipe, 2 low-pressure outer pipe, 21 communicating hole, 22 inserting hole, 23 outer pipe sleeve, 3 connector, 31 welding notch, 4 first communicating pipe, 5 second communicating pipe, 7 first connecting joint, 8 second connecting joint, 9 pressing plate.
Description of the embodiments
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The following description is provided with reference to the accompanying drawings to assist in understanding the embodiments of the invention defined by the claims. It includes various specific details that aid in understanding, but they are to be considered exemplary only. Accordingly, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. Moreover, a detailed description of functions and configurations well known in the art will be omitted for the sake of clarity and conciseness of the present specification.
The invention will be further described with reference to the following drawings:
an internally conductive heat transfer coaxial tube comprising: a high-pressure inner tube 1; the low-pressure outer tube 2, the high-pressure inner tube 1 is sleeved in the low-pressure outer tube 2, and the high-pressure inner tube 1 is longer than the low-pressure outer tube 2 and extends outwards; the connectors 3, the two side ends of the high-pressure inner tube 1 and the low-pressure outer tube 2 are respectively buried in the two connectors 3; a first communication pipe 4 buried in the connector 3, one end of which is communicated with the high-pressure inner pipe 1 and the other end of which is communicated with an external heat source; a second communicating pipe 5 buried in the connector 3, one end of which is communicated with the low-pressure outer pipe 2, and the other end of which is communicated with an external cold source; the outer sleeve 23 is sleeved outside the low-pressure outer tube 2, and two ends of the outer sleeve are fixedly connected with the connector 3 respectively.
In the above-mentioned inner-guide type heat transfer coaxial pipe, the high-pressure inner pipe 1 is buried in the low-pressure outer pipe 2, and the aperture of the high-pressure inner pipe 1 is determined by the heat exchange rate between the inner pipe and the outer pipe. The first communicating pipe 4 and the second communicating pipe 5 respectively lead the heat source and the cold source into the high-pressure inner pipe 1 and the low-pressure outer pipe 2 to form heat exchange. As shown in fig. 2, the portion of the low pressure outer tube 2 between the two connectors 3 is covered with an outer tube sleeve 23 to prevent impact. In the coaxial pipe, a heat source is introduced into the high-pressure inner pipe 1, and a cold source is introduced into the low-pressure outer pipe 2. Compared with the traditional coaxial tube, the coaxial tube disclosed by the invention transfers the heat dissipated in the high-pressure inner tube 1 to the inner side of the low-pressure outer tube 2, so that the dissipation of redundant heat into an engine case is greatly reduced. By adopting the arrangement mode of the invention, on one hand, the heat loss is reduced, the heat exchange efficiency is improved, and on the other hand, the damage caused by the overhigh temperature of the engine is prevented.
The high-pressure inner pipe 1 comprises an inner conducting pipe 11 and an outer connecting pipe 12, wherein the inner conducting pipe 11 is sleeved and fixed in the outer connecting pipe 12, the outer connecting pipe 12 is sleeved in the low-pressure outer pipe 2, and the end part of the inner conducting pipe 11 is communicated with the first connecting pipe 4. The side surface of the pipe wall of the low-pressure outer pipe 2 is provided with a communication hole 21, the communication hole 21 is communicated with the second communication pipe 5, and the end part of the low-pressure outer pipe 2 is provided with an insertion hole 22 so as to facilitate the insertion of the outer connecting pipe 12. The bottom of the connector 3 is provided with a welding notch 31, and the welding notch 31 is arranged at the position of the high-pressure inner tube 1 beyond the low-pressure outer tube 2 and exposes the part of the exceeding position.
As shown in fig. 1, communication holes 21 are formed in the upper side surfaces of both ends of the low-pressure outer tube 2, and a second communication tube 5 which is opened upward is communicated with the outside of the communication holes 21. The outer end surfaces of both sides of the low-pressure outer tube 2 are provided with insertion holes 22 to accommodate insertion of the high-pressure inner tube 1. In the invention, the end of the low-pressure outer tube 2 is buried in the connector 3, and even if the aperture of the insertion hole 22 is slightly larger, the plugging can be completed by only welding the E part and the F part in the figure, so that leakage is prevented.
Referring to fig. 3, at the aforementioned positions E and F, only a weld ring is wound around the mouth side thereof and then welded. The specific welding mode is as follows: the welding paste is smeared firstly to drain, the welding fixture is fixed on a two-station welding machine, then the pipeline is placed on the welding fixture, and a flame gun is used for simultaneously heating, welding, water flushing cooling, slag explosion and taking out the three welding rings.
The welding at E and F are visible, and the welding process is controllable, so that the welding quality is submitted. If the welding has problems, the welding has a spare space, and the welding can be performed again, so that the rejection rate of the coaxial tube is greatly reduced.
In practical implementations, the connector 3 may be made solid or a hollow housing may be used. When the hollow shell is adopted, the G part in fig. 3 needs to be welded, and the welding mode is the same as the E, F part and is not repeated.
The outer connecting pipe 12 is fixedly connected with the low-pressure outer pipe 2 through threads. The adoption of threaded connection prevents the relative displacement between the low-pressure outer tube 2 and the connecting tube on one hand, and on the other hand, the contact area between the low-pressure outer tube 2 and the outer connecting tube 12 is effectively increased, and the heat exchange rate is improved.
The invention also comprises a first connecting head 7 and a second connecting head 8, wherein one end of the first connecting head 7 is fixed with the first communicating pipe, the other end of the first connecting head is communicated with an external heat source, one end of the second connecting head 8 is fixed with the second communicating pipe, and the other end of the second connecting head is communicated with an external cold source. Still include clamp plate 9, clamp plate 9 both sides have been seted up respectively fixed first fixed orifices and the second fixed orifices of first connector 7 and second connector 8, the screw hole has been seted up at clamp plate 9 center, clamp plate 9 pass through screw hole and screw with the upper surface fixed connection of connector 3. In the present invention, the first and second connection ports 7 and 8 may be provided in various shapes as extensions of the first and second communication pipes 4 and 5 of the present invention so as to be connected to different cold and heat source interfaces. After the design section of the invention is utilized, the coaxial pipe can only adopt the design of one pressing plate 9, thereby greatly reducing the consumption of the pressing plate 9 and simultaneously reducing the installation difficulty.
The verification report after the test using the coaxial tube of the present invention is as follows:
the above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An inner conductive heat transfer coaxial tube, comprising:
a high-pressure inner pipe is arranged on the inner pipe,
the high-pressure inner pipe is sleeved in the low-pressure outer pipe, is longer than the low-pressure outer pipe and extends outwards from two ends of the low-pressure outer pipe;
the two side ends of the high-pressure inner pipe and the low-pressure outer pipe are respectively buried in the two connectors;
the first communication pipe is buried in the connector, one end of the first communication pipe is communicated with the high-pressure inner pipe, and the other end of the first communication pipe is communicated with an external heat source;
the second communicating pipe is buried in the connector, one end of the second communicating pipe is communicated with the low-pressure outer pipe, and the other end of the second communicating pipe is communicated with an external cold source;
the outer pipe sleeve is sleeved outside the low-pressure outer pipe, and two ends of the outer pipe sleeve are fixedly connected with the connector respectively;
a welding notch is formed in the bottom of the connector, the welding notch is formed in the part of the high-pressure inner tube, which exceeds the low-pressure outer tube, and the part of the exceeding part is exposed to weld the high-pressure inner tube to the connector;
the high-pressure inner pipe comprises an inner conducting pipe and an outer connecting pipe, the inner conducting pipe is sleeved and fixed in the outer connecting pipe, the outer connecting pipe is sleeved in the low-pressure outer pipe, and the end part of the inner conducting pipe is communicated with the first connecting pipe;
the side surface of the pipe wall of the low-pressure outer pipe is provided with a communication hole, the communication hole is communicated with the second communication pipe, and the end part of the low-pressure outer pipe is provided with an insertion hole so as to facilitate the insertion of the outer connecting pipe.
2. The inner conductive heat transfer coaxial pipe of claim 1, wherein the outer connecting pipe is fixedly connected with the low pressure outer pipe by threads.
3. The inner conductive heat transfer coaxial pipe according to claim 1, further comprising a first connector and a second connector, wherein one end of the first connector is fixed to the first communication pipe, the other end is communicated with an external heat source, one end of the second connector is fixed to the second communication pipe, and the other end is communicated with an external heat source.
4. The inner-guide type heat transfer coaxial pipe according to claim 3, further comprising a pressing plate, wherein a first fixing hole and a second fixing hole for fixing the first connector and the second connector are formed in two sides of the pressing plate respectively, a threaded hole is formed in the center of the pressing plate, and the pressing plate is fixedly connected with the upper surface of the connector through the threaded hole and a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110216722.0A CN112874263B (en) | 2021-02-26 | 2021-02-26 | Internal conduction type heat transfer coaxial tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110216722.0A CN112874263B (en) | 2021-02-26 | 2021-02-26 | Internal conduction type heat transfer coaxial tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112874263A CN112874263A (en) | 2021-06-01 |
| CN112874263B true CN112874263B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110216722.0A Active CN112874263B (en) | 2021-02-26 | 2021-02-26 | Internal conduction type heat transfer coaxial tube |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2915561B1 (en) * | 2007-04-27 | 2009-06-26 | Hutchinson Sa | INTERNAL THERMAL EXCHANGER FOR A MOTOR VEHICLE AIR CONDITIONING CIRCUIT, ONE SUCH CIRCUIT AND METHOD FOR CONNECTING TWO CONNECTORS TO THIS EXCHANGER |
| KR20090029891A (en) * | 2007-09-19 | 2009-03-24 | 한라공조주식회사 | Dual pipe type internal heat exchanger |
| DE102008052550A1 (en) * | 2008-10-21 | 2010-04-22 | Otto Egelhof Gmbh & Co. Kg | Connection device for an internal heat exchanger |
| CN103759480B (en) * | 2013-12-29 | 2016-04-27 | 博耐尔汽车电气***有限公司 | A kind of coaxial reservoir drying bottle |
| CN107128147B (en) * | 2016-02-29 | 2020-05-19 | 比亚迪股份有限公司 | Coaxial pipe and air conditioning system with same |
| CN207364502U (en) * | 2017-08-31 | 2018-05-15 | 上海仪达空调有限公司 | Air conditioning warm air water inlet pipe and water outlet pipe and vehicle water inlet pipe and water outlet pipe pressing plate connection component |
| CN110340589A (en) * | 2018-04-02 | 2019-10-18 | 中集车辆（集团）有限公司 | Semitrailer assembly equipment |
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2021
- 2021-02-26 CN CN202110216722.0A patent/CN112874263B/en active Active
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