CN106979698B - Condensing heat exchanger - Google Patents
Condensing heat exchanger Download PDFInfo
- Publication number
- CN106979698B CN106979698B CN201710216935.7A CN201710216935A CN106979698B CN 106979698 B CN106979698 B CN 106979698B CN 201710216935 A CN201710216935 A CN 201710216935A CN 106979698 B CN106979698 B CN 106979698B
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- Prior art keywords
- heat exchange
- heat exchanger
- exchange fins
- cavity
- fins
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 238000003303 reheating Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 230000008602 contraction Effects 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009991 scouring Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a condensing heat exchange device and a heat exchanger thereof, wherein the heat exchanger comprises a plurality of groups of heat exchange fins, each group of heat exchange fins are sequentially connected end to form a continuous closed S-shaped circulating water channel, each heat exchange fin consists of two heat exchange fins, each heat exchange fin is provided with an accommodating cavity, the two heat exchange fins are buckled, the accommodating cavities form a water flowing cavity, the inner wall of the accommodating cavity is provided with a supporting boss, the outer wall of the accommodating cavity is provided with a curved surface groove which is punched and arranged in a matrix manner, and the two heat exchange fins are mutually clamped and fixed through the supporting boss. The invention adopts the heat exchange plates which are mutually connected to form the S-shaped circulating water flow channel of sealed circulation, and the flow cavity of the heat exchange plates is provided with the curved surface groove structures which are arranged in a matrix manner and distributed at intervals, thereby prolonging the heat exchange distance and the heat absorption time, increasing the heat exchange area, improving the heat exchange efficiency, changing the expansion and contraction rate of the heating surface, the water flow state and the water flow direction, and finally achieving the purposes of improving the heat exchange efficiency, eliminating the water scale blockage, reducing the energy consumption and protecting the environment.
Description
Technical Field
The invention relates to a heat energy exchange technology, in particular to a condensation type heat exchange device.
Background
The condensing heat exchange device used by the traditional household gas heating stove comprises a high-temperature flue gas inlet and outlet box body, a heat exchanger, a high-temperature flue gas retention box, a condensate water guide pipe and the like. The condensed water conduit is convenient to install and is suitable for application in general occasions. But it has the following insurmountable disadvantages:
(1) The processing is complex, the parts are bent, and effective repair cannot be carried out after the parts are damaged;
(2) Have better heat transfer ability at the use initial stage, nevertheless along with the increase of live time, the incrustation scale thickening on the inner wall, water flow reduces, and its heat transfer ability can reduce gradually, and structural rigidity descends, and anti water pressure ability also can reduce.
Therefore, the problems of easy scaling, easy blockage and low heat exchange efficiency exist in the conventional condensation type heat exchange device.
Disclosure of Invention
The invention aims to solve the technical problems that the existing condensing heat exchange device is easy to scale and block and has low heat exchange efficiency.
In order to solve the technical problem, the technical scheme adopted by the invention is to provide a heat exchanger which comprises a plurality of groups of heat exchange fins, wherein each group of heat exchange fins are sequentially connected end to form a continuous closed S-shaped circulating water flow channel, each heat exchange fin comprises two heat exchange fins, each heat exchange fin is provided with a containing cavity, the two heat exchange fins are buckled, the two containing cavities form a water flowing cavity, the inner wall of each containing cavity is provided with a plurality of support bosses distributed at equal intervals, the outer wall of each containing cavity is provided with a matrix-type arranged curved groove formed by stamping, and the two heat exchange fins are mutually clamped and fixed by welding through the support bosses.
In another preferred embodiment, the heat exchanger fin includes a set of first grade heat exchanger fin, multiunit secondary heat exchanger fin and a set of final stage heat exchanger fin from front to back in proper order, each one of them one-tenth on the heat exchanger fin is equipped with two first through-holes on the heat exchanger fin, first grade heat exchanger fin with another piece of secondary heat exchanger fin is equipped with two second through-holes on the heat exchanger fin first grade heat exchanger fin, two first through-holes are connected with water inlet and delivery port respectively, another piece of final stage heat exchanger fin on the heat exchanger fin, be equipped with the relative slow flow chamber in first through-hole position.
In another preferred embodiment, the first through hole is provided with fastening teeth uniformly distributed along the circumference, the second through hole is provided with tooth openings uniformly distributed along the circumference, and the fastening teeth are correspondingly embedded into the tooth openings of the adjacent heat exchange plates.
In another preferred embodiment, the first through hole and the second through hole are eccentrically disposed at both ends of the running water chamber.
In another preferred embodiment, the curved grooves are herringbone grooves which are arranged in sequence, the opening direction of the herringbone grooves is consistent with the flow direction of cold water, and the supporting bosses are arranged in sequence along the water flow direction and are respectively arranged between two adjacent herringbone grooves.
In another preferred embodiment, the curved grooves are spherical grooves which are uniformly distributed, and each supporting boss is sequentially arranged between two adjacent spherical grooves along the water flow direction.
The present invention also provides a condensing heat exchange apparatus, comprising:
the convection box comprises a preheating cavity and a reheating cavity which are arranged side by side, a hot air inlet is formed in the preheating cavity, and a cold air outlet is formed in the reheating cavity;
and the circulating box is arranged below the convection box, and the heat exchanger with the structure is arranged in the circulating box.
In another preferred embodiment, each group of heat exchange plates are sequentially fixed on two parallel clamping screws in a penetrating manner, one end of each clamping screw is fixed with one side surface of the circulation box, and the other end of each clamping screw is fixed with the last stage heat exchange plate through a bolt.
The invention adopts the heat exchange plates to be mutually connected to form a sealed S-shaped circulating water flow channel, and the flow cavity of the heat exchange plates is provided with the curved surface groove structures which are arranged in a matrix manner and distributed at intervals, thereby prolonging the heat exchange distance and the heat absorption time, increasing the heat exchange area, improving the heat exchange efficiency, changing the expansion and contraction rate of the heated surface, the water flow state and the water flow direction, forming the deformed curved surface capable of preventing scaling, being beneficial to disturbing turbulent flow beams of heat exchange and jet flow beams scouring the inner wall of the flow cavity, thoroughly destroying the expansion and contraction curved surface forming the conditions of the inner wall of the scale flow cavity, and finally achieving the purposes of improving the heat exchange efficiency, eliminating scale blockage, reducing energy consumption and protecting the environment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial cross-sectional view of the present invention;
FIG. 3 is an exploded view of the present invention;
fig. 4 is an exploded view of a heat exchanger according to a first embodiment of the present invention;
fig. 5 is an exploded schematic view of a heat exchanger according to a second embodiment of the present invention;
fig. 6 is an exploded schematic view of a first stage heat exchanger plate according to a first embodiment of the present invention;
fig. 7 is an exploded view of a second embodiment of the first stage plate of the present invention;
FIG. 8 is an exploded view of a secondary plate according to a first embodiment of the present invention;
FIG. 9 is an exploded view of a secondary plate according to a second embodiment of the present invention;
FIG. 10 is an exploded view of the final plate of the first embodiment of the present invention;
FIG. 11 is an exploded view of the final plate of the second embodiment of the present invention;
FIG. 12 is a cross-sectional view of a secondary plate according to a first embodiment of the present invention;
fig. 13 is a cross-sectional view of a secondary plate according to a second embodiment of the invention.
Detailed Description
The invention provides a condensing heat exchange device, which adopts heat exchange sheets to be mutually connected to form an S-shaped circulating water channel in sealed circulation, and a flow cavity of each heat exchange sheet is provided with a curved surface groove structure which is arranged in a matrix type and distributed at intervals, thereby prolonging the heat exchange distance and the heat absorption time, increasing the heat exchange area, improving the heat exchange efficiency, changing the expansion and contraction rate of a heated surface, the flow state and the flow direction, forming a deformation curved surface capable of preventing scaling, being beneficial to disturbing turbulent flow beams of heat exchange and jet flow beams scouring the inner wall of the flow cavity, thoroughly destroying the expansion and contraction curved surface forming the conditions of the inner wall of the scale flow cavity, and finally achieving the purposes of improving the heat exchange efficiency, eliminating scale blockage, reducing energy consumption and protecting the environment. The invention is described in detail below with reference to specific embodiments and the attached drawings.
As shown in fig. 4 and 5, the heat exchanger provided by the present invention includes a plurality of sets of heat exchanging fins, and each set of heat exchanging fins are connected end to end in sequence to form a continuous closed S-shaped circulating water channel. The heat exchange fins sequentially comprise a group of first-stage heat exchange fins 31, a plurality of groups of second-stage heat exchange fins 32 and a group of last-stage heat exchange fins 33 from front to back, and the number of the second-stage heat exchange fins 32 can be set according to the needs of occasions.
As shown in fig. 12 and 13, the heat exchanger plate is composed of two heat exchanger fins, each heat exchanger fin is provided with a containing cavity, the two heat exchanger fins are fastened, the two containing cavities form a flowing water cavity 30, the inner wall of the containing cavity is provided with a plurality of support bosses 50 distributed at equal intervals, the outer wall of the containing cavity is provided with a curved groove arranged in a matrix form formed by punching, and the two heat exchanger fins are mutually fastened and fixed by welding through the support bosses 50.
The curved surface groove can be various, and the following two embodiments are provided in the invention.
Example one
As shown in fig. 12, the curved grooves are herringbone grooves 51 arranged in sequence, the opening direction of the herringbone grooves 51 coincides with the flow direction of cold water, and the support bosses 50 are arranged in sequence along the water flow direction and are respectively provided between two adjacent pairs of herringbone grooves 51. The herringbone-shaped grooves 51 can effectively change the flow direction of water flow and can enhance the turbulence disturbance effect. Due to the baffling effect of the herringbone groove 51, the state and the direction of water flow can be continuously changed, and turbulent flow beams which are favorable for improving the heat exchange efficiency and jet flow beams which wash the inner wall of the water flow channel and eliminate scale are formed; the supporting boss 50 which is correspondingly contacted and closely attached and welded can strengthen the pressure resistance of the heat exchange fin and prevent the water flow channel from being distorted and deformed due to abnormal water pressure.
Example two
As shown in fig. 13, the curved grooves are spherical grooves 53 uniformly arranged, and each support boss 50 is sequentially disposed between two adjacent spherical grooves 53 along the water flow direction. The spherical grooves 53 also have good turbulence and curvature change effects, and the like, and also have the ability of preventing scale formation.
As shown in fig. 6 to 13, two first through holes 41 are formed in one of the heat exchange fins on each heat exchange plate, two second through holes 42 are formed in the other of the first-stage heat exchange plate 31 and the second-stage heat exchange plate 32, the two first through holes 41 are respectively connected to the water inlet 21 and the water outlet 22 on the first-stage heat exchange plate 31, and a slow flow cavity 331 is formed in the other heat exchange fin of the last-stage heat exchange plate 33 and is opposite to the first through holes 41. Cold water is injected into the first-stage heat exchange plate 31, the second-stage heat exchange plate 32 and the last-stage heat exchange plate 33 in sequence, and due to the structure of the slow flow cavity 331, the water in the last-stage heat exchange plate 33 can only reversely flow after being blocked, so that the water can circularly flow.
The first through hole 41 and the second through hole 42 are eccentrically arranged at two ends of the water flowing cavity 30, and on the last stage heat exchange plate 33, the structure ensures that cold water circularly flows in an S-shaped mode, the channel length of the water flow can be increased to the maximum extent, and the heat exchange area is increased.
As shown in fig. 5, 12 and 13, the first through hole 41 is provided with fastening teeth 411 uniformly distributed along the circumference, the second through hole 42 is provided with tooth openings uniformly distributed along the circumference, and the fastening teeth 411 are correspondingly embedded into the tooth openings of the adjacent heat exchange fins. The positions of the heat exchange plates and the water inlet 21 or the water outlet 22 are fixed by riveting, and the heat exchange plates are correspondingly embedded and fixed by the buckling teeth 411, so that the heat exchange plates are convenient to maintain and replaceable.
The present invention also provides a condensing heat exchange apparatus, as shown in fig. 1 to 3, comprising a convection tank 10 and a circulation tank 20. The convection box 10 comprises a preheating cavity and a reheating cavity which are arranged at intervals, wherein a hot air inlet 11 is arranged on the preheating cavity, and a cold air outlet 12 is arranged on the reheating cavity. The circulation tank 20 is disposed below the convection tank 10, and the heat exchanger 30 having the above-described structure is disposed inside the circulation tank 20.
The working principle of the invention is as follows: the circulating cold water is arranged in each heat exchange sheet, the high-temperature flue gas enters the circulating box 20 from the hot air flow inlet 11 downwards, the cold water in the heat exchanger 30 absorbs the heat of the high-temperature hot air flow, the high-temperature flue gas is changed into low-temperature cold air flow, and the low-temperature cold air flow is discharged from the cold air flow outlet 12 upwards.
As shown in fig. 4, each group of heat exchanging fins is sequentially fixed on two parallel clamping screws 40 in a penetrating manner, one end of each clamping screw 40 is fixed with one side surface of the circulating box 20, and the other end is fixed with the last stage heat exchanging fin 33 through a bolt. The clamping screw 40 ensures that the plates are accurately mounted so that each plate can be aligned.
The circulation box 20 is connected with the convection box 10 in a sealing manner through a gasket 25 by screw fixation, and the heat exchanger 30 is connected and fixed with the circulation box 20 in a sealing manner through the gasket 25.
The circulation tank 20 is further provided with a drain pipe 23 for discharging condensed water generated during the heat exchange process.
The invention adopts the heat exchange sheets to be mutually connected to form the S-shaped circulating water channel of sealed circulation, and the flow cavity of the heat exchange sheets is provided with the curved surface groove structures which are arranged in a matrix type and distributed at intervals, thereby prolonging the heat exchange distance and the heat absorption time, increasing the heat exchange area, improving the heat exchange efficiency, changing the expansion and contraction rate of the heating surface, the water flow state and the water flow direction, forming the deformation curved surface which can prevent scaling, being beneficial to disturbing turbulent flow beams of heat exchange and jet flow beams scouring the inner wall of the flow cavity, thoroughly destroying the expansion and contraction curved surface which forms the conditions of the inner wall of the scale flow cavity, and finally achieving the purposes of improving the heat exchange efficiency, eliminating scale blockage, reducing energy consumption and protecting the environment.
The present invention is not limited to the above-mentioned preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the protection scope of the present invention, which has the same or similar technical solutions as the present invention.
Claims (7)
1. The heat exchanger comprises a plurality of groups of heat exchange fins, and each group of heat exchange fins are connected end to end in sequence to form a continuous closed S-shaped circulating water channel,
the heat exchange fin is composed of two heat exchange fins, each heat exchange fin is provided with an accommodating cavity, the two heat exchange fins are buckled, the two accommodating cavities form a water flowing cavity, the inner wall of each accommodating cavity is provided with a plurality of support bosses distributed at equal intervals, the outer wall of each accommodating cavity is provided with a curved surface groove which is punched and arranged in a matrix manner, and the two heat exchange fins are mutually clamped and fixed by welding through the support bosses;
the heat exchange fins sequentially comprise a group of first-stage heat exchange fins, a plurality of groups of second-stage heat exchange fins and a group of last-stage heat exchange fins from front to back, two first through holes are formed in one of the heat exchange fins on each heat exchange fin, two second through holes are formed in the other of the first-stage heat exchange fins and the second-stage heat exchange fins, the two first through holes are respectively connected with the water inlet and the water outlet on the first-stage heat exchange fins, and a slow flow cavity opposite to the first through holes is formed in the other heat exchange fin on the last-stage heat exchange fin;
the heat exchanger is characterized in that buckling teeth uniformly distributed along the circumference are arranged on the first through hole, tooth openings uniformly distributed along the circumference are formed in the second through hole, and the buckling teeth are correspondingly embedded into the adjacent heat exchange fins and are arranged in the tooth openings.
2. The heat exchanger of claim 1, wherein the first and second through-holes are eccentrically disposed at both ends of the flow chamber.
3. The heat exchanger of claim 1, wherein said curved recesses are chevron-shaped grooves arranged in series, said chevron-shaped grooves opening in a direction aligned with the direction of flow of cold water, and each of said support bosses is arranged in series in the direction of flow of water and is disposed between two adjacent ones of said chevron-shaped grooves.
4. The heat exchanger of claim 1, wherein the curved grooves are spherical grooves arranged uniformly, and each of the support bosses is sequentially disposed between two adjacent spherical grooves in a water flow direction.
5. Condensing heat exchange device, its characterized in that includes:
the convection box comprises a preheating cavity and a reheating cavity which are arranged side by side, a hot air inlet is formed in the preheating cavity, and a cold air outlet is formed in the reheating cavity;
a circulation box disposed below the convection box, the circulation box having a heat exchanger as claimed in any one of claims 1 to 4 disposed therein.
6. A condensing heat exchange apparatus according to claim 5, wherein each set of said heat exchanger fins is sequentially mounted and fixed to two parallel clamping screws, one end of each of said clamping screws being fixed to one side of said circulation box, and the other end thereof being fixed to said last heat exchanger fin by means of bolts.
7. A condensing heat exchange device according to claim 5, wherein the heat exchanger and the circulation box are screw-fixed and sealed with the convection box by gaskets, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710216935.7A CN106979698B (en) | 2017-04-05 | 2017-04-05 | Condensing heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710216935.7A CN106979698B (en) | 2017-04-05 | 2017-04-05 | Condensing heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106979698A CN106979698A (en) | 2017-07-25 |
| CN106979698B true CN106979698B (en) | 2023-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710216935.7A Active CN106979698B (en) | 2017-04-05 | 2017-04-05 | Condensing heat exchanger |
Country Status (1)
| Country | Link |
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| CN (1) | CN106979698B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865387B (en) * | 2021-11-15 | 2024-09-24 | 浙江融科多家居有限公司 | Flue gas residual heat exchanger of gas heating water heater |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030070793A1 (en) * | 2001-10-15 | 2003-04-17 | Dierbeck Robert F. | Heat exchanger assembly with dissimilar metal connection capability |
| CN201293592Y (en) * | 2008-09-05 | 2009-08-19 | 山东北辰集团华润换热设备有限公司 | Round dot type wide flow passage whole welding type heat exchange board and heat exchanger using the same |
| CN201517903U (en) * | 2009-08-02 | 2010-06-30 | 泰州市远望换热设备有限公司 | Board slot structure capable of preventing board body from being raised and deforming |
| CN201507747U (en) * | 2009-08-20 | 2010-06-16 | 金正哲 | Fast connector for pipeline |
| CN203396099U (en) * | 2013-06-05 | 2014-01-15 | 万家乐热能科技有限公司 | Condensing heat exchanger |
| CN205279043U (en) * | 2016-01-18 | 2016-06-01 | 林乐宗 | Be used for gas boiler box heat exchanger device |
| CN205980876U (en) * | 2016-07-28 | 2017-02-22 | 恒丰工程（香港）有限公司 | Multi-flow detachable plate heat exchanger and special heat exchange plate thereof |
| CN206709636U (en) * | 2017-04-05 | 2017-12-05 | 林叶 | Condensing heat-exchange device and its heat exchanger |
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2017
- 2017-04-05 CN CN201710216935.7A patent/CN106979698B/en active Active
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| CN106979698A (en) | 2017-07-25 |
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Effective date of registration: 20230315 Address after: No. 169, Wei 16th Road, Yueqing Economic Development Zone, Yueqing City, Wenzhou City, Zhejiang Province, 325604 Applicant after: ZHEJIANG HUADI ELECTRONIC Co.,Ltd. Address before: Room 207, No. 53, Zhuguan Lane, Songtai Street, Lucheng District, Wenzhou City, Zhejiang Province, 325000 Applicant before: Lin Ye |
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