CN112325674A - Surrounding type heat exchanger - Google Patents
Surrounding type heat exchanger Download PDFInfo
- Publication number
- CN112325674A CN112325674A CN202011347961.1A CN202011347961A CN112325674A CN 112325674 A CN112325674 A CN 112325674A CN 202011347961 A CN202011347961 A CN 202011347961A CN 112325674 A CN112325674 A CN 112325674A
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- China
- Prior art keywords
- pipe
- heat absorption
- circular
- flue gas
- smoke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/06—Tubular elements of cross-section which is non-circular crimped or corrugated in cross-section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F2009/0285—Other particular headers or end plates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention belongs to the technical field of heat exchange equipment, and particularly relates to a surrounding type heat exchanger which comprises a shell with a smoke channel inside, wherein an opening is formed in the shell along the axial direction of the smoke channel, a spiral coil is arranged in the smoke channel and is formed by spirally winding a round heat absorption pipe, more than two layers of round heat absorption pipes are wound on the round heat absorption pipe from inside to outside, more than two circles of round heat absorption pipes are wound on each layer of round heat absorption pipes, a water inlet port and a water outlet port are formed in two ends of each round heat absorption pipe, and a smoke exhaust port is formed in the shell. The spiral coil pipe is formed by coiling one circular heat absorption pipe, the structure is compact, the process difficulty is low, the spiral coil pipe is convenient to coil, bend and form, meanwhile, in order to enable the spiral coil pipe to have more heat exchange areas, the circular heat absorption pipes surround more than two layers from inside to outside, each layer of circular heat absorption pipes surround more than two circles, the contact time of smoke and the circular heat absorption pipes is long, the heat absorption effect is good, and the heat exchange efficiency is high.
Description
The technical field is as follows:
the invention belongs to the technical field of heat exchange equipment, and particularly relates to a surrounding type heat exchanger.
Background art:
the gas water heater is a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode to achieve the purpose of preparing hot water. The traditional gas water heater comprises a combustion chamber, a heat exchanger and other devices, wherein the heat exchanger is used for absorbing energy generated by combustion of gas and transmitting the energy to cold water flowing through the heat exchanger through a water inlet pipe, the temperature of the cold water rises after heat exchange, the hot water is discharged from a water outlet pipe to realize the function of heating water flow, and high-temperature flue gas generated by combustion is discharged from a smoke outlet.
The existing market has two heat exchangers, one of which is that heat absorption pipes are transversely arranged in a plurality of rows in a flue gas channel, but the heat exchanger has the problems of parallel connection of a plurality of pipes, complex structure, high assembly difficulty and the like. And the other is to coil the flat heat absorption pipe in the flue gas channel, which has the problems of high process requirement, low processing efficiency and the like.
The invention content is as follows:
the invention aims to provide a surrounding type heat exchanger, which is formed by winding a round heat absorption pipe to form a spiral coil pipe, so that the requirement on the process is effectively reduced, and meanwhile, the round heat absorption pipe is wound by a plurality of layers from inside to outside, so that the heat contact area is effectively increased, and the heat absorption efficiency is higher.
The invention is realized by the following steps:
the utility model provides a surrounding type heat exchanger, the casing that has flue gas channel including inside, the opening that is linked together with flue gas channel's head end is seted up along flue gas channel's axial on the casing, be provided with the axial and the axial unanimous spiral coil pipe of flue gas channel in the flue gas channel, spiral coil pipe is formed by a circular heat absorption pipe spiral winding, and circular heat absorption pipe from inside to outside the encircleing has more than two layers, every layer of circular heat absorption pipe encircles has more than two rings, the both ends of circular heat absorption pipe are intake tip and play water tip respectively, set up intercommunication flue gas channel and external exhaust port on the casing.
In the above surrounding type heat exchanger, a flue gas collecting cavity is formed in the shell, the flue gas collecting cavity is communicated with the tail end of the flue gas channel, and the smoke outlet is communicated with the flue gas collecting cavity.
In the above-mentioned surrounding type heat exchanger, the casing includes outer cylinder, the front end housing of lid setting at outer cylinder front end mouth, the rear end housing of lid setting at outer cylinder rear end mouth, and the cover body of lid setting on rear end cap rear end face, form between front end housing, outer cylinder and the rear end cap the flue gas passageway, the opening is seted up on the front end housing, forms between rear end housing and the cover body the flue gas gathers the chamber, sets up on the rear end housing and communicates flue gas gather chamber and flue gas passageway cross the mouth, the mouth of discharging fume is seted up on rear end cap or the cover body.
In the above surrounding type heat exchanger, a condensed water outlet communicated with the outside is provided on the casing at the bottom of the flue gas channel.
In the above-mentioned surrounding type heat exchanger, the rear end cap that is located in the flue gas passageway caves in towards flue gas gathering chamber direction and forms and puts the tube seat, the structure that spiral coil laminated in putting the tube seat, just put the tube seat and the circular heat absorption pipe's that spiral coil corresponds structure looks adaptation.
In the above-mentioned surrounding type heat exchanger, the end of the circular heat absorbing pipe located at the innermost layer is a water outlet end, the end of the circular heat absorbing pipe located at the outermost layer is a water inlet end, and the water outlet end and the water inlet end both extend outwards to the outside of the housing.
In the above surrounding type heat exchanger, the spiral coil has three layers of circular heat absorbing pipes, and the innermost circular heat absorbing pipe is formed by spirally surrounding the water outlet end part of the circular heat absorbing pipe, the middle circular heat absorbing pipe is formed by spirally surrounding the middle part of the circular heat absorbing pipe, and the outermost circular heat absorbing pipe is formed by spirally surrounding the water inlet end part of the circular heat absorbing pipe.
In the above surrounding type heat exchanger, the water inlet end of the circular heat absorbing pipe of the spiral coil is wound around the axial direction of the spiral coil and extends to form a preheating coil, and the number of the layers of the circular heat absorbing pipes of the preheating coil corresponds to the number of the layers of the circular heat absorbing pipes of the spiral coil.
In the above-mentioned wrap-around heat exchanger, the circular heat absorbing pipe is a light pipe or a corrugated pipe.
Compared with the prior art, the invention has the outstanding advantages that:
1. the spiral coil pipe is formed by coiling one circular heat absorption pipe, the structure is compact, the process difficulty is low, the spiral coil pipe is convenient to coil, bend and form, meanwhile, in order to enable the spiral coil pipe to have more heat exchange areas, the circular heat absorption pipe surrounds more than two layers from inside to outside, and each layer of circular heat absorption pipe surrounds more than two circles;
2. the port of the circular heat absorption pipe at the outermost layer is used for water inlet, and the port of the circular heat absorption pipe at the innermost layer is used for water outlet, so that condensed water can be concentrated and condensed on the outer side wall of the circular heat absorption pipe at the outermost layer.
Description of the drawings:
FIG. 1 is an overall perspective view of a first embodiment of the present invention;
FIG. 2 is an overall cross-sectional view of a first embodiment of the present invention;
FIG. 3 is a perspective view of a helical coil according to a first embodiment of the present invention;
fig. 4 is a perspective view of the spiral coil and the preheating coil according to the second embodiment of the present invention.
In the figure: 1. a housing; 2. a flue gas channel; 3. an opening; 4. a helical coil; 5. a circular heat absorbing tube; 6. a water inlet end portion; 7. a water outlet end part; 8. a smoke outlet; 9. a flue gas gathering cavity; 10. an outer cylinder; 11. a front end cover; 12. a rear end cap; 13. a cover body; 14. a condensed water outlet; 15. and (6) preheating the coil.
The specific implementation mode is as follows:
the invention will now be further described by way of specific examples, with reference to figures 1 to 4:
the first embodiment is as follows:
a surrounding type heat exchanger comprises a shell 1 with a flue gas channel 2 inside, an opening 3 communicated with the head end of the flue gas channel 2 is formed in the shell 1 along the axial direction of the flue gas channel 2, and the opening 3 is a burner flame and a high-temperature flue gas generated by the burner flame enters an inlet channel of the flue gas channel 2. The spiral coil pipe 4 with the axial direction consistent with that of the flue gas channel 2 is arranged in the flue gas channel 2, the spiral coil pipe 4 is formed by spirally winding a round heat absorption pipe 5, the round heat absorption pipe 5 is surrounded by more than two layers from inside to outside, each layer of round heat absorption pipe 5 is surrounded by more than two circles, the two ends of the round heat absorption pipe 5 are respectively a water inlet end part 6 and a water outlet end part 7, and a smoke exhaust port 8 communicated with the flue gas channel 2 and the outside is formed in the shell 1.
The spiral coil pipe 4 is formed by coiling one circular heat absorption pipe 5, the structure is compact, the process difficulty is low, the spiral coil pipe 4 is convenient to coil, bend and form, meanwhile, in order to enable the spiral coil pipe 4 to have more heat exchange areas, the circular heat absorption pipes 5 surround more than two layers from inside to outside, each layer of circular heat absorption pipes 5 surround more than two circles, in the practical application process, a burner directly conducts flame spraying to the inner ring of the circular heat absorption pipes 5 to generate high-temperature smoke, heat carried by the high-temperature smoke is diffused outwards to conduct heat transfer with the heat absorption pipes at the circle centers, the contact time of the smoke and the circular heat absorption pipes 5 is long, the heat absorption effect is good, and the heat exchange efficiency is high.
Meanwhile, in the present embodiment, the end of the circular heat absorbing pipe 5 located at the innermost layer is the water outlet end 7, the end of the circular heat absorbing pipe 5 located at the outermost layer is the water inlet end 6, and both the water outlet end 7 and the water inlet end 6 extend outwards to the outside of the housing 1. Namely, the port of the circular heat absorbing pipe 5 at the outermost layer is used for water inlet, and the port of the circular heat absorbing pipe 5 at the innermost layer is used for water outlet, so that condensed water can be concentrated and condensed on the outer side wall of the circular heat absorbing pipe 5 at the outermost layer.
Furthermore, a smoke gathering cavity 9 is formed in the shell 1, the smoke gathering cavity 9 is communicated with the tail end of the smoke channel 2, and the smoke outlet 8 is communicated with the smoke gathering cavity 9. Wherein, the flue gas after heat exchange and temperature reduction through the circular heat absorption pipe 5 is concentrated in the flue gas gathering cavity 9 and finally discharged from the smoke outlet 8.
In the present embodiment, the specific structure of the housing 1 is: the shell 1 comprises an outer cylinder 10, a front end cover 11 covering the front end of the outer cylinder 10, a rear end cover 12 covering the rear end of the outer cylinder 10, and a cover body 13 covering the rear end face of the rear end cover 12, wherein the flue gas channel 2 is formed among the front end cover 11, the outer cylinder 10 and the rear end cover 12, the opening 3 is formed in the front end cover 11, the flue gas gathering cavity 9 is formed between the rear end cover 12 and the cover body 13, the rear end cover 12 is provided with a flue gas passing port communicating the flue gas gathering cavity 9 with the flue gas channel 2, and the flue gas discharging port 8 is formed in the rear end cover 12 or the cover body 13. The spiral coil 4 is respectively abutted against the rear end face of the front end cover 11 and the front end face of the rear end cover 12, so that the spiral coil 4 is fixed in the flue gas channel 2.
Meanwhile, condensed water condensed on the outer side wall of the outermost circular heat absorption pipe 5 drops into the shell 1, a condensed water outlet 14 communicated with the outside is formed in the shell 1 at the bottom of the flue gas channel 2, and the condensed water accumulated at the bottom of the shell 1 can be discharged outwards from the condensed water outlet 14.
Furthermore, in order to enable residual heat of the flue gas in the flue gas gathering cavity 9 to be absorbed by the circular heat absorbing pipes 5 through heat exchange, the rear end cover 12 positioned in the flue gas channel 2 is recessed towards the flue gas gathering cavity 9 to form a pipe placing groove, the spiral coil pipe 4 is attached in the pipe placing groove, and the structure of the pipe placing groove is matched with the structure of the circular heat absorbing pipes 5 corresponding to the spiral coil pipe 4.
Further, in the present embodiment, the specific winding structure of the spiral coil 4 is: the spiral coil 4 is provided with three layers of circular heat absorption pipes 5, the circular heat absorption pipe 5 at the innermost layer is formed by spirally surrounding the water outlet end part 7 of the circular heat absorption pipe 5, the circular heat absorption pipe 5 at the middle layer is formed by spirally surrounding the middle part of the circular heat absorption pipe 5, and the circular heat absorption pipe 5 at the outermost layer is formed by spirally surrounding the water inlet end part 6 of the circular heat absorption pipe 5.
The circular heat absorbing pipe 5 of the present embodiment is a light pipe, but it is needless to say that a pipe having another shape such as a bellows pipe may be used as the circular heat absorbing pipe 5.
Example two;
the structure of this embodiment is substantially the same as that of the first embodiment, and the main difference is that: the water inlet end part 6 of the circular heat absorption pipe 5 of the spiral coil 4 is coiled and extended around the axial direction of the spiral coil 4 to form a preheating coil 15, and the number of layers of the circular heat absorption pipe 5 of the preheating coil 15 corresponds to the number of layers of the circular heat absorption pipe 5 of the spiral coil 4. It compares embodiment one, and this embodiment spiral coil 4's heat exchange area is more, and simultaneously, spiral coil 4 is close to the opening 3 setting of casing 1, and preheating coil 15 is kept away from the opening 3 setting of casing 1, and water liquid carries out the heat exchange with low temperature flue gas and realizes preheating in preheating coil 15 earlier, carries out the heat exchange with high temperature flue gas through spiral coil 4 again, and its heat exchange efficiency is higher.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A wrap-around heat exchanger, characterized by: including inside casing (1) that has flue gas passageway (2), opening (3) that are linked together with the head end of flue gas passageway (2) are seted up along the axial of flue gas passageway (2) on casing (1), be provided with axial and the axial of flue gas passageway (2) unanimous spiral coil (4) in flue gas passageway (2), spiral coil (4) are formed by a circular absorber tube (5) spiral coiling, and circular absorber tube (5) from inside to outside around have more than two-layer, every layer of circular absorber tube (5) is around having more than two circles, the both ends of circular absorber tube (5) are inlet end portion (6) and outlet end portion (7) respectively, set up intercommunication flue gas passageway (2) and external exhaust port (8) on casing (1).
2. A wrap around heat exchanger as claimed in claim 1, wherein: a smoke gathering cavity (9) is formed in the shell (1), the smoke gathering cavity (9) is communicated with the tail end of the smoke channel (2), and the smoke outlet (8) is communicated with the smoke gathering cavity (9).
3. A wrap around heat exchanger as claimed in claim 2, wherein: the shell (1) comprises an outer cylinder (10), a front end cover (11) covering a front port of the outer cylinder (10), a rear end cover (12) covering a rear port of the outer cylinder (10), and a cover body (13) covering a rear end face of the rear end cover (12), wherein the smoke channel (2) is formed among the front end cover (11), the outer cylinder (10) and the rear end cover (12), the opening (3) is formed in the front end cover (11), the smoke collecting cavity (9) is formed between the rear end cover (12) and the cover body (13), a smoke passing opening communicating the smoke collecting cavity (9) with the smoke channel (2) is formed in the rear end cover (12), and the smoke discharging opening (8) is formed in the rear end cover (12) or the cover body (13).
4. A wrap around heat exchanger according to claim 1 or 3, wherein: and a condensed water outlet (14) communicated with the outside is formed in the shell (1) at the bottom of the flue gas channel (2).
5. A wrap around heat exchanger as claimed in claim 3, wherein: the rear end cover (12) positioned in the flue gas channel (2) is sunken towards the direction of the flue gas gathering cavity (9) to form a pipe placing groove, and the spiral coil pipe (4) is attached in the pipe placing groove, and the structure of the pipe placing groove is matched with the structure of the circular heat absorbing pipe (5) corresponding to the spiral coil pipe (4).
6. A wrap around heat exchanger as claimed in claim 1, wherein: the end part of the circular heat absorbing pipe (5) positioned at the innermost layer is a water outlet end part (7), the end part of the circular heat absorbing pipe (5) positioned at the outermost layer is a water inlet end part (6), and the water outlet end part (7) and the water inlet end part (6) both extend outwards to the outside of the shell (1).
7. A wrap around heat exchanger according to claim 1 or 7, wherein: the spiral coil pipe (4) is provided with three layers of circular heat absorption pipes (5), the circular heat absorption pipe (5) at the innermost layer is formed by spirally surrounding the water outlet end part (7) of the circular heat absorption pipe (5), the circular heat absorption pipe (5) at the middle layer is formed by spirally surrounding the middle part of the circular heat absorption pipe (5), and the circular heat absorption pipe (5) at the outermost layer is formed by spirally surrounding the water inlet end part (6) of the circular heat absorption pipe (5).
8. A wrap around heat exchanger as claimed in claim 1, wherein: the water inlet end (6) of the circular heat absorption pipe (5) of the spiral coil (4) is coiled and extended around the axial direction of the spiral coil (4) to form a preheating coil (15), and the number of layers of the circular heat absorption pipe (5) of the preheating coil (15) corresponds to the number of layers of the circular heat absorption pipe (5) of the spiral coil (4).
9. A wrap around heat exchanger as claimed in claim 1, wherein: the circular heat absorption pipe (5) is a light pipe or a corrugated pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011347961.1A CN112325674A (en) | 2020-11-26 | 2020-11-26 | Surrounding type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011347961.1A CN112325674A (en) | 2020-11-26 | 2020-11-26 | Surrounding type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112325674A true CN112325674A (en) | 2021-02-05 |
Family
ID=74308865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011347961.1A Pending CN112325674A (en) | 2020-11-26 | 2020-11-26 | Surrounding type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112325674A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980509A (en) * | 2021-04-28 | 2021-06-18 | 东营联合石化有限责任公司 | Stabilize light hydrocarbon production and use refining plant with hydrocracking |
| CN116045685A (en) * | 2023-04-06 | 2023-05-02 | 河北鸿科碳素有限公司 | Low-temperature waste heat recovery system of prebaked anode roasting furnace |
-
2020
- 2020-11-26 CN CN202011347961.1A patent/CN112325674A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980509A (en) * | 2021-04-28 | 2021-06-18 | 东营联合石化有限责任公司 | Stabilize light hydrocarbon production and use refining plant with hydrocracking |
| CN112980509B (en) * | 2021-04-28 | 2021-07-30 | 东营联合石化有限责任公司 | Stabilize light hydrocarbon production and use refining plant with hydrocracking |
| CN116045685A (en) * | 2023-04-06 | 2023-05-02 | 河北鸿科碳素有限公司 | Low-temperature waste heat recovery system of prebaked anode roasting furnace |
| CN116045685B (en) * | 2023-04-06 | 2023-06-23 | 河北鸿科碳素有限公司 | Low-temperature waste heat recovery system of prebaked anode roasting furnace |
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