CN213238590U - Heat exchange sheet for gas water heater and gas water heater - Google Patents
Heat exchange sheet for gas water heater and gas water heater Download PDFInfo
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- CN213238590U CN213238590U CN202020883861.XU CN202020883861U CN213238590U CN 213238590 U CN213238590 U CN 213238590U CN 202020883861 U CN202020883861 U CN 202020883861U CN 213238590 U CN213238590 U CN 213238590U
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- heat exchange
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- diversion hole
- exchange tube
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Abstract
The utility model relates to a heat exchange fin for a gas water heater and the gas water heater, wherein, the heat exchange fin comprises a substrate; a first flow guide hole; a heat exchange tube hole; the second diversion hole is arranged near the left edge or the right edge of the base plate and penetrates through the wall thickness of the base plate along the front-back direction, a second flanging extending forwards is formed at the periphery of the second diversion hole, the second diversion hole is arranged above the first diversion hole, the central line of the second diversion hole and the central line of the first diversion hole on the corresponding side are positioned on the same longitudinal plane, the central line of the second diversion hole and the central line of the heat exchange tube hole above the first diversion hole corresponding to the second diversion hole are positioned at the same height, and the first diversion hole and the second diversion hole can improve the heat exchange efficiency.
Description
Technical Field
The utility model belongs to the technical field of gas heater, concretely relates to a heat exchanger fin and gas heater for gas heater.
Background
A heat exchanger of a gas water heater, a close gas wall-mounted furnace and other gas appliances is mainly characterized in that heat exchange fins are welded on heat exchange tubes and are arranged in a smoke exhaust channel of the gas water heater, and the heat exchange fins exchange heat with smoke to absorb the heat of the smoke and heat cold water in the heat exchange tubes.
In order to improve the heat exchange efficiency, the current heat exchange plate is improved, as shown in the heat exchange fin for a gas water heater disclosed in the utility model Chinese patent with the patent number of CN201420553410.4 (publication number of CN204154169U), the heat exchange fin comprises a base plate, wherein a plurality of water pipe holes and a plurality of first flanging holes are formed in the base plate, each water pipe hole penetrates through the base plate along the front-back direction, the flanging of the first flanging holes are located on the front side of the base plate, and the first flanging holes are arranged on the base plate in a long strip shape and in an inclined manner.
Although the heat exchange fin improves the heat exchange efficiency, the heat exchange fin has the following defects: 1. the heat exchange fin is only provided with the first flanging hole and the second flanging hole, the heat exchange efficiency of the heat exchange fin is improved to some extent, but the heat exchange efficiency is limited, and the heat exchange efficiency of the heat exchange fin is to be further improved; 2. the first flanging hole is formed with flanging at the peripheral edge, so that the length of the flanging is short, and the effect of the flanging on increasing the heat exchange time, improving the airflow resistance and guiding the airflow is limited; 3. although the heat exchange efficiency of the heat exchange plate can be improved to a certain extent through the first flanging hole which is obliquely arranged, the area of the opening of the first flanging hole is large, and the strength of the heat exchange plate can be reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the first technical problem to provide a heat exchanger fin for gas heater that heat exchange efficiency is high to prior art's current situation.
The utility model discloses the second technical problem that will solve is to prior art's current situation, provides a gas heater of above-mentioned heat exchanger fin of application that heat exchange efficiency is high.
The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a heat exchange fin for a gas water heater comprises
A substrate;
the first flow guide holes are arranged close to the left edge or the right edge of the substrate and penetrate through the thickness of the substrate in the front-back direction, the first flow guide holes are strip-shaped and incline towards the edge of the substrate on the corresponding side from top to bottom, and at least part of the periphery of each first flow guide hole is formed with a first flanging extending forwards;
the heat exchange tube holes penetrate through the wall thickness of the base plate along the front-back direction so as to allow heat exchange tubes to axially penetrate through the base plate, the heat exchange tube holes are multiple, at least two rows of heat exchange tubes are distributed on the base plate at intervals from top to bottom, the first flow guide holes are arranged between every two adjacent rows of heat exchange tube holes, and a flanging part extending forwards is formed at the periphery of each heat exchange tube hole;
it is characterized by also comprising
The second diversion hole is arranged near the left edge or the right edge of the base plate and penetrates through the wall thickness of the base plate along the front-back direction, a second flanging extending forwards is formed at the periphery of the second diversion hole, the second diversion hole is arranged above the first diversion hole, the center line of the second diversion hole and the center line of the first diversion hole on the corresponding side are positioned on the same longitudinal plane, and the center line of the second diversion hole and the center line of the heat exchange tube hole above the first diversion hole corresponding to the second diversion hole are positioned at the same height.
In order to further improve the heat exchange efficiency, a plurality of third diversion holes are formed in the base plate at intervals along the circumferential direction of each heat exchange tube hole positioned in the uppermost row, and third flanges are formed at the circumferential edges of the third diversion holes. Under the guide of the first flanging and the third flanging, the middle flue gas can form a bypass flow after flowing through the heat exchange pipe hole, and the heat exchange strength is further improved.
In order to further improve the heat exchange efficiency, a plurality of third diversion holes corresponding to the same heat exchange tube hole form a group, at least one fourth diversion hole is arranged between two adjacent groups of third diversion holes, a fourth flanging extending forwards is formed at the periphery of the fourth diversion hole, and the fourth diversion hole is positioned between two adjacent rows of heat exchange tube holes. The fourth turn-ups can play the effect that improves the heat exchange efficiency of arranging the heat exchange tube down.
If the heat exchange tube holes are aligned up and down to form an up-and-down overlapped structure, heat exchange blind areas can exist in the heat exchange tube holes during actual work, so that the heat exchange tube holes are arranged in two rows and are arranged in a staggered mode, and the number of the heat exchange tube holes in the upper row is one less than that of the heat exchange tube holes in the lower row. Through the design that two rows of heat exchange tube holes are not aligned in the longitudinal direction but staggered mutually, the heat exchange blind area originally below the upper row of heat exchange tube holes can also directly absorb heat, the area of the heat exchange tube holes directly contacting hot air flow in the heat exchange fins is enlarged, so that the heat exchange efficiency is improved, and the effect is very obvious.
In order to have a good heat conduction effect on heat exchange tube holes far away from heating flame, a plurality of grooves are formed in the lower portion of the base plate, each groove is located between every two adjacent heat exchange tube holes in the lower row, and the third flow guide holes are staggered with the grooves in the longitudinal direction. The heat generated by heating flame can directly penetrate into the middle part of the base plate from the groove, so that the effective heat absorption of the upper row of heat exchange tube holes is facilitated, the groove basically passes through one side edge of the lower row of heat exchange tube holes, the top of the lower row of heat exchange tube holes can absorb the heat well, the defect of an original heat exchange blind area is overcome, and the heat-absorbing plate has an obvious effect.
In order to improve the effect of the first flanging, the first flanging is formed on the upper edge or the lower edge of the corresponding first flow guide hole. The first flanging is only formed on the upper edge or the lower edge of the first flow guide hole, and compared with the forming on the peripheral edge, the length of the first flanging can be longer, the flow guide effect is good, and the heat exchange time can be prolonged.
Preferably, the first diversion hole and the second diversion hole are formed in the positions, close to the left edge and the right edge, of the substrate, the first diversion hole close to the left edge of the substrate inclines leftwards from top to bottom, and the first diversion hole close to the right edge of the substrate inclines rightwards from top to bottom.
In order to ensure the strength of the base plate, the downstream end of the first diversion hole is far away from the heat exchange pipe hole on the corresponding side above the first diversion hole along the flowing direction of the airflow. The open area of first water conservancy diversion hole is less than the first turn-ups hole of the patent that discloses in the background art like this, and is little to the influence of base plate intensity.
Preferably, the left side edge and the right side edge of the substrate are both bent forwards to form folded edges. The hem makes heat exchanger fin and heat exchanger inner wall welding back have great area of contact, can improve the structural strength and the assembly reliability of fin, and the atress is even.
The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the gas water heater using the heat exchange fins is characterized by further comprising a heat exchange tube, and the heat exchange tube penetrates through a heat exchange tube hole in the substrate.
Compared with the prior art, the utility model has the advantages that: the utility model is not only provided with the first diversion hole, and plays a role in diversion of air flow through the inclined first flanging on the first diversion hole, so that the high-temperature flue gas flows in a form of gathering to the heat exchange hole, thereby reducing the loss of the high-temperature flue gas, and leading the cold water flowing through the heat exchange pipe to perform sufficient heat exchange with the high-temperature flue gas, and effectively improving the heat exchange efficiency of the heat exchanger; the base plate is further provided with second flow guide holes, the central lines of the second flow guide holes and the central lines of the first flow guide holes on the corresponding sides are located on the same longitudinal surface, the central lines of the second flow guide holes and the central lines of the heat exchange tube holes above the corresponding first flow guide holes are located at the same height, so that the second flow guide holes can be well matched with the first flow guide holes and the heat exchange tube holes in the corresponding rows, and the second turnups of the second flow guide holes can also play a role in increasing air flow resistance, so that the heat exchange time is prolonged, and the effect of improving the heat exchange efficiency is achieved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;
fig. 3 is a gas flow diagram.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 3, the gas water heater of the preferred embodiment includes a heat exchanger plate and a heat exchange tube, wherein the heat exchanger plate includes a substrate 1, a first diversion hole 2, a heat exchange tube hole 3, a second diversion hole 4, a third diversion hole 5 and a fourth diversion hole 6 are provided on the substrate 1, the left side edge and the right side edge of the substrate 1 are bent forwards to form a folded edge 12, the folded edge 12 enables the heat exchanger plate to have a large contact area after being welded with the inner wall of the heat exchanger, the structural strength and the assembly reliability of the heat sink can be improved, and the stress is uniform.
In this embodiment, there are 5 heat exchange tube holes 3, a flanging portion 31 extending forward is formed at the periphery of each heat exchange tube hole 3, the heat exchange tube axially penetrates through the heat exchange tube holes 3, two rows of the 5 heat exchange tube holes 3 are distributed on the substrate 1 along the up-down direction at intervals, the first row has two, the second row has 3, the two rows of the heat exchange tube holes 3 are arranged in a staggered manner in the longitudinal direction, that is, the arrangement manner of up-down alignment is not provided, of course, the number of the heat exchange tube holes 3 is not limited to that shown in this embodiment, but it is required to satisfy that the two rows of the heat exchange tube holes 3 are arranged in a staggered manner, and the number of the heat exchange tube holes.
In this embodiment, there are two first guiding holes 2, one of the first guiding holes 2 is disposed adjacent to the left edge of the substrate 1 and inclined from top to bottom to the left, the other first guiding hole 2 is disposed adjacent to the right edge of the substrate 1 and inclined from top to bottom to the right, and the two first guiding holes 2 are located between two adjacent rows of heat exchange tube holes 3. When the number of the heat exchange tube holes 3 is more than two, the first diversion holes 2 are arranged between every two adjacent rows of the heat exchange tube holes 3.
The shaping of the last border department of first water conservancy diversion hole 2 has the first turn-ups 21 that extends forward, certainly first turn-ups 21 also can be shaped in the lower border department of first water conservancy diversion hole 2, first turn-ups 21 only shapes in one of them border department of first water conservancy diversion hole 2, for the mode all around with first turn-ups 21 shaping in first water conservancy diversion hole 2, first turn-ups 21's length is longer, can play better water conservancy diversion effect, increase the air resistance, increase heat transfer time, improve heat exchange efficiency.
In this embodiment, in the flowing direction of the air flow, the downstream end of the first diversion hole 2 is far away from the heat exchange tube hole 3 on the corresponding side above the first diversion hole, in other words, the upper end of the first diversion hole 2 on the left side is far away from the leftmost heat exchange tube hole 3 in the upper row, and the upper end of the first diversion hole 2 on the right side is far away from the rightmost heat exchange tube hole 3 in the upper row. Like this the trompil area of first water conservancy diversion hole 2 is less than the first flanging hole of the patent that discloses in the background art, and is little to the influence of base plate 1 intensity, but can reach the purpose that improves heat exchange efficiency again.
In this embodiment, two second diversion holes 4 are formed in the circular hole, one second diversion hole 4 is disposed adjacent to the left edge of the substrate 1, the other second diversion hole 4 is disposed adjacent to the right edge of the substrate 1, the second diversion holes 4 are located above the first diversion holes 2 on the corresponding side (the corresponding side refers to the side both adjacent to the left edge of the substrate 1 or the side both adjacent to the right edge of the substrate 1), the center line of the second diversion hole 4 and the center line of the first diversion hole 2 on the corresponding side are located on the same longitudinal plane, the center line of the second diversion hole 4 and the center line of the heat exchange tube hole 3 above the corresponding first diversion hole 2 are located at the same height, and the center line refers to the center perpendicular to the end surface of the substrate 1 and passing through the corresponding diversion hole. In this embodiment, the center line of the second guiding hole 4 and the center line of the upper row of heat exchange tube holes 3 are at the same height.
The second turned-over edge 41 extending forwards is formed at the periphery of each second flow guide hole 4, the second turned-over edge 41 also plays a role in flow guide, and the second turned-over edge 41 can be well matched with the first turned-over edge 21 and the turned-over edge part 31 of the heat exchange tube hole 3 due to the arrangement position of the second flow guide hole 4, so that the functions of flow guide and heat exchange effect improvement are achieved.
Each heat exchange tube hole 3 positioned at the uppermost row is provided with a plurality of third flow guide holes 5 on the base plate 1 at intervals along the circumferential direction of the heat exchange tube hole, a third flanging 51 is formed at the periphery of each third flow guide hole 5, and under the guidance of the first flanging 21 and the third flanging 51, the intermediate flue gas can form a circumferential flow after flowing through the heat exchange tube holes 3, so that the heat exchange strength is further increased.
A plurality of third diversion holes 5 corresponding to the same heat exchange tube hole 3 are a group, two fourth diversion holes 6 are arranged between two adjacent groups of third diversion holes 5, a fourth flanging 61 extending forwards is formed at the periphery of each fourth diversion hole 6, the fourth diversion holes 6 are positioned between two adjacent rows of heat exchange tube holes 3, and the fourth flanging 61 can play a role in improving the heat exchange efficiency of the lower row of heat exchange tubes.
In order to have a good heat conduction effect on the heat exchange tube holes 3 far away from the heating flame, a plurality of grooves 11 are formed in the lower portion of the base plate 1, each groove 11 is located between every two adjacent heat exchange tube holes 3 in the lower row, and the third flow guide holes 5 are staggered with the grooves 11 in the longitudinal direction. The heat that heating flame produced can be from this recess 11 direct deep-going to base plate 1 middle part, is favorable to going up effective heat absorption of heat transfer tube hole 3, and this recess 11 has passed through one side border of heat transfer tube hole 3 down basically in addition, makes the top of heat transfer tube hole 3 down also can be better absorb the heat, has improved originally the defect of heat transfer blind area, and has obvious effect.
The flow direction of the plate of this embodiment is shown in figure 3.
Directional terms such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the present invention, but are used herein for convenience of description only and are determined based on example orientations shown in the drawings, and these directional terms are for illustrative purposes only and should not be construed as limiting.
Claims (10)
1. A heat exchange fin for a gas water heater comprises
A substrate (1);
the first flow guide holes (2) are arranged close to the left edge or the right edge of the base plate (1) and penetrate through the wall thickness of the base plate (1) along the front-back direction, the first flow guide holes (2) are strip-shaped and incline towards the edge of the base plate (1) on the corresponding side from top to bottom, and at least part of the peripheral edge of each first flow guide hole (2) is formed with a first flanging (21) extending forwards;
the heat exchange tube holes (3) penetrate through the wall thickness of the base plate (1) along the front-back direction so as to allow heat exchange tubes to axially penetrate through the base plate, a plurality of heat exchange tube holes (3) are formed, at least two rows of heat exchange tube holes are distributed on the base plate (1) at intervals from top to bottom, the first flow guide holes (2) are formed between every two adjacent rows of heat exchange tube holes (3), and a flanging part (31) extending forwards is formed at the periphery of each heat exchange tube hole (3);
it is characterized by also comprising
The second diversion hole (4) is arranged close to the left edge or the right edge of the base plate (1) and penetrates through the wall thickness of the base plate (1) in the front-back direction, a second flanging (41) extending forwards is formed at the periphery of the second diversion hole, the second diversion hole (4) is positioned above the first diversion hole (2), the center line of the second diversion hole (4) and the center line of the first diversion hole (2) on the corresponding side are positioned on the same longitudinal plane, and the center line of the second diversion hole (4) and the center line of the heat exchange tube hole (3) above the first diversion hole (2) corresponding to the second diversion hole are positioned at the same height.
2. The plate of claim 1, wherein: each heat exchange tube hole (3) positioned at the uppermost row is provided with a plurality of third diversion holes (5) on the base plate (1) at intervals along the circumferential direction of the heat exchange tube hole, and a third flanging (51) is formed at the periphery of each third diversion hole (5).
3. The plate of claim 2, wherein: the heat exchanger comprises a plurality of heat exchange tube holes (3), a plurality of third diversion holes (5) corresponding to the same heat exchange tube hole (3) are in a group, at least one fourth diversion hole (6) is arranged between every two adjacent groups of third diversion holes (5), a fourth flanging (61) extending forwards is formed at the periphery of each fourth diversion hole (6), and the fourth diversion holes (6) are located between every two adjacent rows of heat exchange tube holes (3).
4. A plate according to claim 3 wherein: the heat exchange tube holes (3) are arranged in two rows in a staggered mode, and the number of the heat exchange tube holes (3) in the upper row is one less than that of the heat exchange tube holes (3) in the lower row.
5. The plate of claim 4, wherein: the lower part of the base plate (1) is provided with a plurality of grooves (11), each groove (11) is positioned between two adjacent heat exchange tube holes (3) in the lower row, and the third flow guide holes (5) are staggered with the grooves (11) in the longitudinal direction.
6. A plate according to any one of claims 1 to 5 wherein: the first flanging (21) is formed on the upper edge or the lower edge of the corresponding first diversion hole (2).
7. A plate according to any one of claims 1 to 5 wherein: the first diversion hole (2) and the second diversion hole (4) are formed in the positions, close to the left edge and the right edge, of the substrate (1), the first diversion hole (2) close to the left edge of the substrate (1) inclines leftwards from top to bottom, and the first diversion hole (2) close to the right edge of the substrate (1) inclines rightwards from top to bottom.
8. The plate of claim 7, wherein: and in the flowing direction of the air flow, the downstream end of the first diversion hole (2) is far away from the heat exchange pipe hole (3) on the corresponding side above the first diversion hole.
9. A plate according to any one of claims 1 to 5 wherein: the left side edge and the right side edge of the substrate (1) are bent forwards to form folded edges (12).
10. A gas water heater using the heat exchange fin as claimed in any one of claims 1 to 9, characterized by further comprising a heat exchange pipe, wherein the heat exchange pipe penetrates through the heat exchange pipe hole (3) on the base plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020883861.XU CN213238590U (en) | 2020-05-22 | 2020-05-22 | Heat exchange sheet for gas water heater and gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020883861.XU CN213238590U (en) | 2020-05-22 | 2020-05-22 | Heat exchange sheet for gas water heater and gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213238590U true CN213238590U (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020883861.XU Active CN213238590U (en) | 2020-05-22 | 2020-05-22 | Heat exchange sheet for gas water heater and gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213238590U (en) |
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2020
- 2020-05-22 CN CN202020883861.XU patent/CN213238590U/en active Active
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