CN216694595U

CN216694595U - Energy-saving efficient heat exchanger

Info

Publication number: CN216694595U
Application number: CN202220178764.XU
Authority: CN
Inventors: 吴奇龙; 费忠辉
Original assignee: Shanghai Bige Industrial Co ltd
Current assignee: Shanghai Bige Industrial Co ltd
Priority date: 2022-01-22
Filing date: 2022-01-22
Publication date: 2022-06-07
Anticipated expiration: 2032-01-22

Abstract

The utility model relates to a heat exchanger technical field especially relates to an energy-conserving high-efficient heat exchanger, and it includes the casing, be provided with oil feed chamber, oil outlet cavity, right cavity, go up cavity and cavity down in the casing, right cavity respectively with the oil feed chamber with all be provided with many heat exchange tubes between the oil outlet cavity, all be provided with a plurality of baffling boards in cavity and the cavity down, the heat exchange tube outer wall is inwards sunken and be formed with many recesses towards its central axis, many the recess is along heat exchange tube outer wall circumference array distribution. This application has the effect that improves heat exchanger heat exchange efficiency.

Description

Energy-saving efficient heat exchanger

Technical Field

The application relates to the field of heat exchanger technology, in particular to an energy-saving efficient heat exchanger.

Background

A heat exchanger is a device for transferring heat between two media with different temperatures, and realizes the temperature transfer of a high-temperature medium to a low-temperature medium. And the two media entering the heat exchanger are subjected to heat transfer through the wall surface of the heat exchange tube in the heat exchanger.

The heat exchange tube of the prior heat exchanger is generally a round tube, and the contact area between two media inside and outside the heat exchange tube is small in unit length of the heat exchange tube, so that the heat transfer rate of a high-temperature medium to a low-temperature medium is low, and the heat exchange efficiency of the heat exchanger is reduced.

SUMMERY OF THE UTILITY MODEL

In order to improve the heat exchange efficiency of heat exchanger, this application provides an energy-conserving high-efficient heat exchanger.

The application provides an energy-conserving high-efficient heat exchanger adopts following technical scheme:

the utility model provides an energy-conserving high-efficient heat exchanger, includes the casing, be provided with oil feed chamber, oil outlet cavity, right cavity, go up cavity and cavity down in the casing, right cavity respectively with the oil feed chamber with all be provided with many heat exchange tubes between the oil outlet cavity, all be provided with a plurality of baffling boards in cavity and the cavity down, the heat exchange tube outer wall is inwards sunken and is formed with many recesses towards its central axis, many the recess is along heat exchange tube outer wall circumference array distribution.

By adopting the technical scheme, the heat medium in the oil inlet cavity flows into the right cavity through the heat exchange tube positioned in the lower cavity, and the heat medium in the right cavity flows into the oil outlet cavity through the heat exchange tube positioned in the upper cavity. The outer wall of the heat exchange tube is inwards sunken to form a plurality of grooves, so that the area of the tube wall of the heat exchange tube is increased, a large contact area is formed between a cold medium and a hot medium, the heat transfer speed of the heat exchange tube in unit length is improved, and the heat exchange efficiency is improved; the grooves are uniformly distributed on the outer wall of the heat exchange tube in the circumferential direction, so that the inner medium and the outer medium of the heat exchange tube are uniformly contacted, and the heat transfer is more uniform.

Optionally, the heat exchange tube comprises an inner tube and an outer tube, and the outer tube is sleeved outside the inner tube.

Through adopting above-mentioned technical scheme, the inner tube is separated outer tube and hot medium, and the outer tube is separated inner tube and cold medium, makes the interior outer wall of heat exchange tube not contact two kinds of media that the cold and hot difference in temperature is great simultaneously, and then has prolonged the life of heat exchange tube.

Optionally, the inner pipe is a copper inner pipe, and the outer pipe is an aluminum alloy outer pipe.

By adopting the technical scheme, the copper has higher heat conductivity coefficient, so that the inner pipe can quickly absorb the heat released by the refrigerant and transfer the heat to the outer pipe; the aluminum alloy has lower specific heat, and the outer pipe is endowed with the effect of quickly releasing heat energy; through the arrangement, the heat conduction capacity and the heat exchange efficiency of the heat exchange tube are improved.

Optionally, the outer pipe includes a first half pipe and a second half pipe, and a fixing member for fixing the second half pipe is disposed on an outer side wall of the first half pipe.

Through adopting above-mentioned technical scheme, through dismantling first half pipe and the half pipe of second, can split inner tube and outer tube fast, be favorable to improving staff's work efficiency.

Optionally, the mounting is a sleeve, the sleeve is sleeved on the outer side wall of the first half pipe and the second half pipe, a protrusion matched with the groove is arranged on the inner side wall of the sleeve, an insertion block is arranged on the outer side wall of the sleeve, and a slot matched with the insertion block is arranged on one side of the insertion block, which is far away from the outer side wall of the sleeve.

By adopting the technical scheme, the sleeve is sleeved on the outer side walls of the first half pipe and the second half pipe to fix the first half pipe and the second half pipe; the projections are in inserted fit with the grooves, so that the sleeve is not easy to rotate and slide, and the first half pipe and the second half pipe are firmly fixed on the outer side wall of the inner pipe; the insertion blocks on the sleeves are inserted into the slots of the adjacent sleeves, so that the adjacent two heat exchange tubes are fixed, and the stability of the heat exchange tubes is improved.

Optionally, the baffle plate is a bent plate, an outer arc surface of the baffle plate located in the lower chamber faces towards the right chamber, and an outer arc surface of the baffle plate located in the upper chamber faces towards the oil outlet chamber.

By adopting the technical scheme, the cold medium positioned on the peripheral side of the heat exchange tube is firstly contacted with the heat exchange tube and is heated, the cold medium far away from the heat exchange tube is gradually contacted with the heat exchange tube along with the flowing of the cold medium, and when the flow rate of the cold medium is slower, the integral heating speed is slower. The cold medium impacts on the bent baffle plate and flows along the inner arc surface of the baffle plate, so that the cold medium is stirred, the turbulence degree of the cold medium is increased, and the heat exchange efficiency is improved.

Optionally, an expansion joint is arranged on the side wall of the shell.

Through adopting above-mentioned technical scheme, when the heat transfer, the cold medium in the casing is great with the hot medium difference in temperature in the heat exchange tube to lead to the casing to have expend with heat and contract with cold's phenomenon, the expansion joint has compensated the thermal expansion difference of casing.

Optionally, an exhaust pipe is arranged at the top of the side wall of the shell, and a sewage discharge pipe is arranged at the bottom of the side wall of the shell.

Through adopting above-mentioned technical scheme, waste gas in the casing passes through the blast pipe and outwards discharges, and impurity in the casing is discharged from the blow off pipe.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the grooves increase the area of the tube wall of the heat exchange tube, increase the contact area between cold and hot media, and accelerate the heat transfer speed of the heat exchange tube in unit length, thereby improving the heat exchange efficiency;

2. the baffle plate is arranged as the bent plate, so that the medium flowing through the baffle plate flows along the inner arc surface of the baffle plate, the cold medium is stirred by the baffle plate, the turbulence degree of the cold medium is increased, and the heat exchange efficiency is further improved;

3. through setting up the sleeve pipe, firmly fix first half pipe and second half pipe in the inner tube outside, through dismantling the sleeve pipe, the staff of being convenient for directly, dismantles the inner tube fast, has improved work efficiency.

Drawings

FIG. 1 is a schematic overall structure diagram of an energy-saving efficient heat exchanger in an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of an energy-saving and efficient heat exchanger according to an embodiment of the present application;

FIG. 3 is a schematic end view of a heat exchange tube to highlight the first and second tube halves;

FIG. 4 is a schematic view of the sleeve to highlight the slots.

Reference numerals: 1. a housing; 2. a water inlet pipe; 3. a first separator; 4. a second separator; 5. a left chamber; 6. a third partition plate; 7. a fourth separator; 8. a water inlet cavity; 9. a water-stop sheet; 10. a lower chamber; 11. an upper chamber; 12. a water inlet; 13. a water outlet pipe; 14. an oil inlet cavity; 15. an oil inlet pipe; 16. an oil outlet cavity; 17. an oil outlet pipe; 18. a right chamber; 19. a heat exchange pipe; 191. an inner tube; 192. an outer tube; 1921. a first half pipe; 1922. a second half pipe; 20. a groove; 21. a sleeve; 22. a protrusion; 23. inserting a block; 24. a slot; 25. a baffle plate; 26. an expansion joint; 27. an exhaust pipe; 28. a sewage discharge pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses an energy-saving efficient heat exchanger. Referring to fig. 1 and 2, the energy-saving high-efficiency heat exchanger includes a cylindrical housing 1, and a water inlet pipe 2 is welded to one end of the housing 1. Vertical welding has first baffle 3 and second baffle 4 in the casing 1, and first baffle 3 and second baffle 4 set up along 1 length direction interval of casing, and is formed with left cavity 5 between the inside one end that is close to inlet tube 2 of casing 1 and first baffle 3. A third partition plate 6 and a fourth partition plate 7 are horizontally fixed on the inner side wall of the left cavity 5, a water inlet cavity 8 is formed between the third partition plate 6 and the fourth partition plate 7, and the water inlet cavity 8 is communicated with the water inlet pipe 2. A water-stop sheet 9 is horizontally welded and fixed on the inner wall of the shell 1, and the water-stop sheet 9 is positioned between the first partition plate 3 and the second partition plate 4. The bottom surface of the water-stop sheet 9 and the inner wall of the shell 1 form a lower chamber 10, and the top surface of the water-stop sheet 9 and the inner wall of the shell 1 form an upper chamber 11. And a water through hole 12 is formed in the side wall of the first partition plate 3, and the water through hole 12 is communicated with the water inlet cavity 8 and the lower chamber 10. A water outlet pipe 13 is fixedly welded on the top of the side wall of the shell 1, and the water inlet cavity 8 is communicated with the upper cavity 11.

Referring to fig. 1 and 2, the third partition plate 6 is located at the bottom of the fourth partition plate 7, the third partition plate 6 and the inner wall of the left chamber 5 surround and form an oil inlet cavity 14, an oil inlet pipe 15 is welded and fixed at the bottom of the side wall of the shell 1, and the oil inlet cavity 14 is communicated with the oil inlet pipe 15. The fourth baffle plate 7 and the inner wall of the left chamber 5 enclose and form an oil outlet cavity 16, the bottom of the side wall of the shell 1 is fixedly welded with an oil outlet pipe 17, and the oil outlet cavity 16 is communicated with the oil outlet pipe 17. A right cavity 18 is formed between one end, far away from the water inlet pipe 2, of the interior of the shell 1 and the second partition plate 4, a plurality of heat exchange pipes 19 are directly arranged on the right cavity 18, the oil inlet cavity 14 and the oil outlet cavity 16, and the heat exchange pipes 19 are communicated with the right cavity 18 and the oil inlet cavity 14 or communicated with the right cavity 18 and the oil outlet cavity 16.

The cold medium is introduced into the shell 1 through the water inlet pipe 2, flows through the water inlet cavity 8, the lower cavity 10 and the upper cavity 11 in sequence, and is finally output out of the shell 1 through the water outlet pipe 13. The heat medium is introduced into the shell 1 through the oil inlet pipe 15, flows through the oil inlet cavity 14, the heat exchange pipe 19 positioned in the lower cavity 10, the right cavity 18, the heat exchange pipe 19 positioned in the upper cavity 11 and the oil outlet cavity 16 in sequence, and is finally output out of the shell 1 through the oil outlet pipe 17, so that heat transfer between cold medium and heat medium is completed.

Referring to fig. 2 and 3, in order to improve the heat exchange efficiency of the heat exchanger, the outer wall of the heat exchange tube 19 is recessed inward toward the central axis thereof and is formed with a plurality of grooves 20, the grooves 20 being opened along the length direction of the heat exchange tube 19. The groove 20 increases the area of the tube wall of the heat exchange tube 19, and increases the contact area between the cold medium and the heat medium in the unit length of the heat exchange tube 19, thereby improving the heat exchange efficiency between the cold medium and the heat medium. The grooves 20 are distributed along the circumferential direction of the outer wall of the heat exchange tube 19 in an array mode, so that the inner medium and the outer medium of the heat exchange tube 19 are in uniform contact, and heat transfer is more uniform.

Referring to fig. 2 and 3, the heat exchange tube 19 includes an inner tube 191 and an outer tube 192 sleeved on an outer wall of the inner tube 191, a heat medium directly contacts the inner tube 191, and a cold medium directly contacts the outer tube 192, so that the inner and outer walls of the heat exchange tube 19 contact two media with large temperature difference at intervals, thereby protecting the heat exchange tube 19 and prolonging the service life of the heat exchange tube 19. The inner tube 191 and the outer tube 192 are both metal tubes, in this embodiment, the inner tube 191 is a copper inner tube 191, and the copper inner tube 191 provides the heat exchange tube 19 with the effect of rapidly absorbing the temperature of the heat medium. The outer pipe 192 is an aluminum alloy outer pipe 192, the aluminum alloy outer pipe 192 endows the heat exchange pipe 19 with the effect of quickly releasing heat energy, and the double-layer composite pipe formed by the copper inner pipe 191 and the aluminum alloy outer pipe 192 has excellent heat conduction capacity and high heat exchange efficiency.

Referring to fig. 2 and 3, the outer tube 192 includes a first half tube 1921 and a second half tube 1922, inner sidewalls of the first half tube 1921 and the second half tube 1922 are attached to an outer sidewall of the inner tube 191, a fixing member is disposed on an outer sidewall of the first half tube 1921, and the first half tube 1921 and the second half tube 1922 are fixedly connected by the fixing member. The fixing piece is disassembled, so that the worker can directly and quickly disassemble the inner pipe 191 from the first half pipe 1921 and the second half pipe 1922, and the working efficiency is improved.

Referring to fig. 3 and 4, the fixing member is a sleeve 21, the sleeve 21 is sleeved on the outer side walls of the first half pipe 1921 and the second half pipe 1922, and the inner side wall of the sleeve 21 is in interference fit with the outer side walls of the first half pipe 1921 and the second half pipe 1922. The inner side wall of the sleeve 21 is integrally formed with a protrusion 22 matching with the groove 20. The protrusions 22 are inserted into the grooves 20 to prevent the sleeve 21 from rotating and moving, thereby firmly fixing the sleeve 21 to the outer walls of the first and second half-

pipes

1921 and 1922. The lateral wall of the sleeve 21 is convexly provided with an insertion block 23, and one side of the lateral wall of the sleeve 21, which is far away from the insertion block 23, is provided with a slot 24 matched with the insertion block 23. The insertion blocks 23 on the sleeves 21 are inserted into the insertion grooves 24 of the adjacent sleeves 21, so that the two adjacent heat exchange tubes 19 are fixedly connected, and the stability of the heat exchange tubes 19 is improved.

Referring to fig. 2, a plurality of baffle plates 25 are arranged in the upper chamber 11 and the lower chamber 10, one end of each baffle plate 25 is welded and fixed with the inner wall of the shell 1, and the plurality of baffle plates 25 are arranged in an array along the length direction of the shell 1. The baffle plate 25 is provided with a through hole for penetrating the heat exchange tube 19, and after the heat exchange tube 19 sequentially penetrates through the plurality of baffle plates 25, the two ends of the heat exchange tube 19 are in threaded connection with the side wall of the first partition plate 3 and the side wall of the second partition plate 4. The baffles 25 increase the flow path of the cold medium and thus allow for more efficient heat transfer between the cold and hot media.

Referring to fig. 2, the baffle plate 25 is a bent plate, the outer arc surface of the baffle plate 25 in the lower chamber 10 faces the right chamber 18, the outer arc surface of the baffle plate 25 in the upper chamber 11 faces the oil outlet chamber 16, the cold medium impacts against the side surface of the baffle plate 25 and flows along the inner arc surface of the baffle plate 25, so that the baffle plate 25 stirs the cold medium, the turbulence degree of the cold medium is increased, the flow speed of the cold medium far away from the heat exchange tube 19 towards the heat exchange tube 19 is increased, and the heat exchange efficiency is improved.

Referring to fig. 1 and 2, an expansion joint 26 is integrally formed and protruded on the side wall of the casing 1 in a direction away from the central axis of the casing, and the expansion joint 26 compensates for expansion difference of the casing 1 caused by thermal expansion and cold contraction. An exhaust pipe 27 is welded on the top of the side wall of the shell 1, and exhaust gas in the shell 1 is exhausted from the exhaust pipe 27. A sewage discharge pipe 28 is welded at the bottom of the side wall of the shell 1, and impurities in the shell 1 are discharged from the sewage discharge pipe 28.

The implementation principle of the energy-saving high-efficiency heat exchanger in the embodiment of the application is as follows: the heat medium flows in the heat exchange tube 19, the cold medium flows outside the heat exchange tube 19, the cold medium and the heat medium are subjected to heat transfer through the heat exchange tube 19, and the groove 20 in the wall of the heat exchange tube 19 increases the area of the tube wall of the heat exchange tube 19, so that the cold medium and the heat medium have larger contact area, the heat transfer speed between the cold medium and the heat medium is increased, and the heat exchange efficiency of the heat exchanger is improved; meanwhile, when passing through the baffle plate 25, the cold medium flows along the inner arc surface of the baffle plate 25 and is stirred, so that the cold medium far away from the heat exchange tube 19 quickly flows and completes heat transfer with the tube wall of the heat exchange tube 19, and further the heat exchange efficiency of the heat exchanger is further improved.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an energy-conserving high-efficient heat exchanger, includes casing (1), be provided with oil feed chamber (14), oil outlet chamber (16), right cavity (18), go up cavity (11) and lower cavity (10) in casing (1), right cavity (18) respectively with oil feed chamber (14) with all be provided with many heat exchange tubes (19) between oil outlet chamber (16), all be provided with a plurality of baffling boards (25), its characterized in that in going up cavity (11) and lower cavity (10): the outer wall of the heat exchange tube (19) is inwards sunken towards the central axis of the heat exchange tube and is provided with a plurality of grooves (20), and the grooves (20) are distributed along the outer wall of the heat exchange tube (19) in a circumferential array mode.

2. An energy-saving and high-efficiency heat exchanger as claimed in claim 1, characterized in that: the heat exchange tube (19) comprises an inner tube (191) and an outer tube (192), and the outer tube (192) is sleeved on the outer side of the inner tube (191).

3. An energy-saving and high-efficiency heat exchanger as claimed in claim 2, characterized in that: the inner pipe (191) is a copper inner pipe (191), and the outer pipe (192) is an aluminum alloy outer pipe (192).

4. An energy-saving and high-efficiency heat exchanger as claimed in claim 3, characterized in that: the outer pipe (192) comprises a first half pipe (1921) and a second half pipe (1922), and a fixing piece for fixing the second half pipe (1922) is arranged on the outer side wall of the first half pipe (1921).

5. An energy-saving and high-efficiency heat exchanger as claimed in claim 4, characterized in that: the fixing piece is a sleeve (21), the sleeve (21) is sleeved on the outer side walls of the first half pipe (1921) and the second half pipe (1922), a protrusion (22) matched with the groove (20) is arranged on the inner side wall of the sleeve (21), an insert block (23) is arranged on the outer side wall of the sleeve (21), and a slot (24) matched with the insert block (23) is arranged on one side, far away from the insert block (23), of the outer side wall of the sleeve (21).

6. An energy-saving high-efficiency heat exchanger as claimed in claim 1, characterized in that: the baffle plate (25) is a bent plate, the outer arc surface of the baffle plate (25) positioned in the lower chamber (10) faces towards the right chamber (18), and the outer arc surface of the baffle plate (25) positioned in the upper chamber (11) faces towards the oil outlet chamber (16).

7. An energy-saving and high-efficiency heat exchanger as claimed in claim 1, characterized in that: an expansion joint (26) is arranged on the side wall of the shell (1).

8. An energy-saving and high-efficiency heat exchanger as claimed in claim 1, characterized in that: an exhaust pipe (27) is arranged at the top of the side wall of the shell (1), and a sewage discharge pipe (28) is arranged at the bottom of the side wall of the shell (1).