CN215062884U - Secondary heat exchanger for gas water heater - Google Patents
Secondary heat exchanger for gas water heater Download PDFInfo
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- CN215062884U CN215062884U CN202023025876.1U CN202023025876U CN215062884U CN 215062884 U CN215062884 U CN 215062884U CN 202023025876 U CN202023025876 U CN 202023025876U CN 215062884 U CN215062884 U CN 215062884U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 106
- 239000010410 layer Substances 0.000 claims description 163
- 239000002344 surface layer Substances 0.000 claims description 27
- 239000000779 smoke Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 12
- 239000003546 flue gas Substances 0.000 description 12
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model relates to a heat exchange medium indirect contact's indirect heating equipment field specifically is a secondary heat exchanger for gas heater. The utility model provides a secondary heat exchanger for gas heater locates the top of main heat exchanger (1), includes casing (2), characterized by: the heat exchange device is characterized by also comprising a heat exchange coil (3), a lower supporting plate (6), a guide plate (7) and a baffle plate (8), wherein the heat exchange coil (3) is divided into a left heat exchange unit (31) and a right heat exchange unit (32); the lower supporting plate (6) is obliquely arranged below the heat exchange coil (3) in the inner cavity of the shell (1), the guide plate (7) is arranged above the heat exchange coil (3) in the inner cavity of the shell (1), the baffle plate (8) is arranged between the left heat exchange unit (31) and the right heat exchange unit (32), the top edge of the baffle plate (8) is connected with the other side edge of the guide plate (7), and a gap is reserved between the bottom edge of the baffle plate (8) and the lower supporting plate (6). The utility model discloses heat utilization rate is high.
Description
Technical Field
The utility model relates to a heat exchange medium indirect contact's indirect heating equipment field specifically is a secondary heat exchanger for gas heater.
Background
There are generally three ways to improve the thermal efficiency of a gas water heater: firstly, the fuel gas releases as much heat as possible; secondly, the heat exchanger absorbs more heat as much as possible; and thirdly, heat loss of each item is reduced. For the condensing gas water heater for recovering the latent heat of the flue gas by adding the secondary heat exchanger, whether the secondary heat exchanger fully absorbs the heat of the flue gas or not is particularly important, and the heat of the flue gas is recovered by utilizing the heat of the flue gas to the maximum extent. At present, the secondary heat exchanger has the defects of low thermal efficiency and low heat energy utilization rate.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a indirect heating equipment that heat utilization rate is high, the utility model discloses a secondary heat exchanger for gas heater.
The utility model discloses a following technical scheme reaches the invention purpose:
the utility model provides a secondary heat exchanger for gas heater, locates the top of main heat exchanger, and the top of main heat exchanger is equipped with the exhaust port, and including the casing, the bottom of casing is equipped with into smoke mouth, and the exhaust port at main heat exchanger top passes through the inlet smoke mouth that the chassis bottom was connected to the gas collecting channel, characterized by: also comprises a heat exchange coil, a lower supporting plate, a guide plate and a baffle plate,
the heat exchange coil is divided into a left heat exchange unit and a right heat exchange unit,
the left heat exchange unit is formed by connecting a left heat exchange pipe layer, and the left heat exchange pipe layer is formed by heat exchange pipes in the following mode: at least nine heat exchange tubes are taken to enable the end surfaces of the heat exchange tubes to be arranged in a vertical plane in a longitudinal and transverse mode to form at least three layers, each layer is provided with at least three heat exchange tubes, the end parts of the same side of every two adjacent heat exchange tubes are mutually connected through heat exchange connecting tubes, the two adjacent heat exchange connecting tubes are respectively arranged at the two ends of the heat exchange tubes, so that an integral left heat exchange tube layer provided with a water inlet and a water outlet is formed, the left heat exchange tube layer is sequentially provided with at least three layers from bottom to top so as to form a left heat exchange unit,
the right heat exchange unit is formed by connecting a right heat exchange pipe layer, and the right heat exchange pipe layer is formed by heat exchange pipes in the following mode: at least nine heat exchange tubes are taken to enable the end surfaces of the heat exchange tubes to be arranged in a vertical direction in a longitudinal and transverse mode to form at least three layers, each layer is provided with at least three heat exchange tubes, the end parts of the same side of every two adjacent heat exchange tubes are mutually connected through heat exchange connecting tubes, the two adjacent heat exchange connecting tubes are respectively arranged at the two ends of each heat exchange tube, so that an integral right heat exchange tube layer provided with a water inlet and a water outlet is formed, the right heat exchange tube layer is sequentially provided with at least three layers from bottom to top to form a right heat exchange unit, and the number of the right heat exchange tube layer is equal to that of the left heat exchange tube layer;
the number of the left heat exchange units and the number of the right heat exchange units are equal and are at least two, each left heat exchange unit is sequentially arranged on a vertical plane, each right heat exchange unit is also sequentially arranged on the vertical plane, and each right heat exchange unit is respectively arranged on one side of one left heat exchange unit;
the left heat exchange unit and the right heat exchange unit are respectively arranged on the left side and the right side of the middle part of the inner cavity of the shell, and each left heat exchange unit is respectively connected with one right heat exchange unit;
the bottom plate is obliquely arranged below the heat exchange coil pipe in the inner cavity of the shell, the guide plate is arranged above the heat exchange coil pipe in the inner cavity of the shell, one side edge of the guide plate is fixed on the side wall of the shell and is arranged above the smoke inlet at the bottom of the shell, the baffle plate is arranged between the left heat exchange unit and the right heat exchange unit, the top edge of the baffle plate is connected with the other side edge of the guide plate, and a gap is reserved between the bottom edge of the baffle plate and the bottom plate.
The secondary heat exchanger for the gas water heater is characterized in that: the heat exchange coil is composed of a left heat exchange unit and a right heat exchange unit according to the following modes:
the left heat exchange tube layers in the left heat exchange unit and the right heat exchange tube layers in the right heat exchange unit are sequentially a 1 st layer, a 2 nd layer, … … and an Nth layer from bottom to top,
the water inlet of the 1 st layer of the left heat exchange tube layer is used as the water inlet of the heat exchange coil,
the water outlet of the 1 st layer left heat exchange tube layer is connected with the water inlet of the 2 nd layer right heat exchange tube layer through a surface layer connecting tube, the water outlet of the 2 nd layer right heat exchange tube layer is connected with the water inlet of the 3 rd layer right heat exchange tube layer through a heat exchange connecting tube, the water outlet of the 3 rd layer right heat exchange tube layer is connected with the water inlet of the 2 nd layer left heat exchange tube layer through a surface layer connecting tube,
correspondingly, the water outlet of the i-th left heat exchange tube layer is connected with the water inlet of the i + 1-th right heat exchange tube layer through a surface layer connecting tube, the water outlet of the i + 1-th right heat exchange tube layer is connected with the water inlet of the i + 2-th right heat exchange tube layer through a heat exchange connecting tube, the water outlet of the i + 2-th right heat exchange tube layer is connected with the water inlet of the i + 1-th left heat exchange tube layer through a surface layer connecting tube, wherein i is a positive integer in the interval of [1, N-3],
when i = N-2, the water outlet of the N-2 th left heat exchange tube layer is connected with the water inlet of the N-1 st right heat exchange tube layer through the surface layer connecting tube, the water outlet of the N-1 st right heat exchange tube layer is connected with the water inlet of the N-1 st right heat exchange tube layer through the heat exchange connecting tube, the water outlet of the N-1 st right heat exchange tube layer is connected with the water inlet of the N-1 st left heat exchange tube layer through the surface layer connecting tube, the water outlet of the N-1 st left heat exchange tube layer is connected with the water inlet of the 1 st right heat exchange tube layer through the surface layer connecting tube,
the water outlet of the 1 st layer right heat exchange tube layer is used as the water outlet of the heat exchange coil,
therefore, the left heat exchange unit and the right heat exchange unit form the heat exchange coil.
The secondary heat exchanger for the gas water heater is characterized in that: the included angle between the surface layer connecting pipe and the horizontal plane is 15-30 degrees, and the lower supporting plate and the surface layer connecting pipe are arranged in parallel;
the distance between the right end of the left heat exchange unit and the left end of the right heat exchange unit is 25 mm-30 mm, the distance between the baffle plate and the right end of the left heat exchange unit is 3 mm-5 mm, and the distance between the bottom end of the baffle plate and the lower support plate is 10 mm-20 mm.
The utility model discloses during the use, the hot flue gas of main heat exchanger exhaust gets into the chassis inner chamber from the gas collecting channel through chassis bottom's smoke inlet, the lateral surface of heat transfer coil pipe of flowing through in proper order under the guide of guide plate, baffling board and bottom plate, each heat exchange tube of flowing through in proper order is flowed in from heat transfer coil pipe's water inlet to normal atmospheric temperature water, and hot flue gas and normal atmospheric temperature water take place heat exchange this moment, and the delivery port through heat transfer coil pipe is discharged after the normal atmospheric temperature water heating, and the exhaust port at casing top is followed to the hot flue gas cooling back and is discharged.
The utility model discloses following beneficial effect has: the heat efficiency is up to more than 99%, the smoke discharge temperature is lower than 70 ℃, various indexes are obviously improved compared with those of the conventional gas water heater, and the heat energy utilization rate is improved.
Drawings
Figure 1 is a schematic structural view of the present invention,
fig. 2 is a schematic structural diagram of the heat exchange coil of the present invention.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1
The utility model provides a secondary heat exchanger for gas heater, locates the top of main heat exchanger 1, includes casing 2, heat transfer coil 3, bottom plate 6, guide plate 7 and baffling board 8, as shown in figure 1 and figure 2, concrete structure is:
the top of the main heat exchanger 1 is provided with a smoke outlet, the bottom of the casing 2 is provided with a smoke inlet, and the smoke outlet at the top of the main heat exchanger 1 is connected with the smoke inlet at the bottom of the casing 2 through a gas collecting hood 11;
heat exchange coil 3 is divided into a left heat exchange unit 31 and a right heat exchange unit 32,
the left heat exchange unit 31 is formed by connecting a left heat exchange tube layer 41, and the left heat exchange tube layer 41 is formed by the heat exchange tubes 51 in the following manner: twelve heat exchange tubes 51 are taken to enable the end surfaces of the heat exchange tubes 51 to be arranged in four layers vertically and horizontally on the vertical plane, each layer is provided with three heat exchange tubes 51, the same side end parts of every two adjacent heat exchange tubes 51 are mutually connected through a heat exchange connecting pipe 52, the two adjacent heat exchange connecting pipes 52 are respectively arranged at the two ends of the heat exchange tubes 51, thereby forming an integral left heat exchange tube layer 41 provided with a water inlet and a water outlet, the left heat exchange tube layer 41 is provided with at least three layers from bottom to top so as to form a left heat exchange unit 31,
the right heat exchange unit 32 is formed by connecting right heat exchange tube layers 42, and the right heat exchange tube layers 42 are formed by heat exchange tubes 51 in the following manner: twelve heat exchange tubes 51 are taken to enable the end surfaces of the heat exchange tubes 51 to be arranged in four layers vertically and horizontally on a vertical plane, each layer is provided with three heat exchange tubes 51, the same-side end parts of every two adjacent heat exchange tubes 51 are mutually connected through a heat exchange connecting tube 52, the two adjacent heat exchange connecting tubes 52 are respectively arranged at two ends of the heat exchange tubes 51, so that an integral right heat exchange tube layer 42 provided with a water inlet and a water outlet is formed, and at least three layers of the right heat exchange tube layer 42 are sequentially arranged from bottom to top to form a right heat exchange unit 32;
the number of the left heat exchange units 31 and the number of the right heat exchange units 32 are equal and at least two, in the embodiment, three heat exchange units are respectively adopted, each left heat exchange unit 31 is sequentially arranged on a vertical plane, each right heat exchange unit 32 is also sequentially arranged on the vertical plane, and each right heat exchange unit 32 is respectively arranged on one side of one left heat exchange unit 31;
the left heat exchange unit 31 and the right heat exchange unit 32 are respectively arranged on the left side and the right side of the middle part of the inner cavity of the shell 2, and each left heat exchange unit 31 is respectively connected with one right heat exchange unit 32;
the lower supporting plate 6 is obliquely arranged below the heat exchange coil 3 in the inner cavity of the shell 2, the guide plate 7 is arranged above the heat exchange coil 3 in the inner cavity of the shell 2, one side edge of the guide plate 7 is fixed on the side wall of the shell 2 and is arranged above a smoke inlet at the bottom of the shell 2, the baffle plate 8 is arranged between the left heat exchange unit 31 and the right heat exchange unit 32, the top edge of the baffle plate 8 is connected with the other side edge of the guide plate 7, and a gap is reserved between the bottom edge of the baffle plate 8 and the lower supporting plate 6.
In this embodiment: the heat exchange coil 3 is composed of a left heat exchange unit 31 and a right heat exchange unit 32 according to the following modes:
the left heat exchange tube layer 41 on each layer in the left heat exchange unit 31 and the right heat exchange tube layer 42 on each layer in the right heat exchange unit 32 are sequentially a 1 st layer, a 2 nd layer, … … and an Nth layer from bottom to top,
the water inlet of the 1 st layer of the left heat exchange tube layer 41 is used as the water inlet of the heat exchange coil 3,
the water outlet of the 1 st layer left heat exchange tube layer 41 is connected with the water inlet of the 2 nd layer right heat exchange tube layer 42 through a surface layer connecting tube 53, the water outlet of the 2 nd layer right heat exchange tube layer 42 is connected with the water inlet of the 3 rd layer right heat exchange tube layer 42 through a heat exchange connecting tube 52, the water outlet of the 3 rd layer right heat exchange tube layer 42 is connected with the water inlet of the 2 nd layer left heat exchange tube layer 41 through a surface layer connecting tube 53,
correspondingly, the water outlet of the i-th left heat exchange tube layer 41 is connected with the water inlet of the i + 1-th right heat exchange tube layer 42 through a surface layer connecting tube 53, the water outlet of the i + 1-th right heat exchange tube layer 42 is connected with the water inlet of the i + 2-th right heat exchange tube layer 42 through a heat exchange connecting tube 52, the water outlet of the i + 2-th right heat exchange tube layer 42 is connected with the water inlet of the i + 1-th left heat exchange tube layer 41 through a surface layer connecting tube 53, wherein i is a positive integer within the interval of [1, N-3],
when i = N-2, the water outlet of the N-2 th left heat exchange tube layer 41 is connected to the water inlet of the N-1 st right heat exchange tube layer 42 through the surface layer connecting tube 53, the water outlet of the N-1 st right heat exchange tube layer 42 is connected to the water inlet of the N-1 st right heat exchange tube layer 42 through the heat exchange connecting tube 52, the water outlet of the N-th right heat exchange tube layer 42 is connected to the water inlet of the N-th left heat exchange tube layer 41 through the surface layer connecting tube 53, the water outlet of the N-th left heat exchange tube layer 41 is connected to the water inlet of the 1 st right heat exchange tube layer 42 through the surface layer connecting tube 53,
the water outlet of the 1 st layer right heat exchange tube layer 42 is used as the water outlet of the heat exchange coil 3,
each left heat exchange unit 31 is connected with the right heat exchange unit 32 according to the method, so that the left heat exchange unit 31 and the right heat exchange unit 32 form a heat exchange coil 3, and the heat exchange coil 3 is of a three-inlet three-outlet structure;
the included angle between the surface layer connecting pipe 53 and the horizontal plane is 15 degrees to 30 degrees, the included angle is 15 degrees in the embodiment, and the lower supporting plate 6 and the surface layer connecting pipe 53 are arranged in parallel;
the interval between the right-hand member of left heat transfer unit 31 and the left end of right heat transfer unit 32 is 25mm ~ 30mm, and 27mm is got in this embodiment, and the interval of baffling board 8 to the right-hand member of left heat transfer unit is 3mm ~ 5mm, and 4mm is got in this embodiment, and the interval of baffling board 8 bottom to bottom plate 6 is 10mm ~ 20mm, and 16mm is got in this embodiment.
When the heat exchanger is used in the embodiment, hot flue gas discharged by the main heat exchanger 1 enters the inner cavity of the casing 2 from the gas collecting hood 11 through the smoke inlet at the bottom of the casing 2, and sequentially flows through the outer side surface of the heat exchange coil 3 under the guidance of the guide plate 7, the baffle plate 8 and the lower supporting plate 6, the flow direction of the hot flue gas is shown by hollow arrows in fig. 1, normal-temperature water flows into the heat exchange tubes 51 sequentially from the water inlet of the heat exchange coil 3, at the moment, heat exchange occurs between the hot flue gas and the normal-temperature water, the hot flue gas is heated by the normal-temperature water and then discharged through the water outlet of the heat exchange coil 3, and the hot flue gas is cooled and then discharged from the smoke outlet at the top of the casing 2.
In fig. 2: the tubes depicted by solid lines are tubes located on the front side, the corresponding solid arrows are the water flow direction in the tubes on the front side, the tubes depicted by dashed lines are tubes located on the back side, and the corresponding dashed arrows are the water flow direction in the tubes on the back side; the black dots indicate the flow direction of water from the back to the front, and the cross symbol x indicates the flow direction of water from the front to the back.
Claims (3)
1. The utility model provides a secondary heat exchanger for gas heater, locates the top of main heat exchanger (1), and the top of main heat exchanger (1) is equipped with the exhaust port, including casing (2), the bottom of casing (2) is equipped with into smoke mouth, and the exhaust port at main heat exchanger (1) top passes through gas collecting channel (11) and connects the income smoke mouth of casing (2) bottom, characterized by: also comprises a heat exchange coil (3), a lower supporting plate (6), a guide plate (7) and a baffle plate (8),
the heat exchange coil (3) is divided into a left heat exchange unit (31) and a right heat exchange unit (32),
the left heat exchange unit (31) is formed by connecting a left heat exchange tube layer (41), and the left heat exchange tube layer (41) is formed by heat exchange tubes (51) in the following mode: at least nine heat exchange tubes (51) are taken to enable the end surfaces of the heat exchange tubes (51) to be vertically and horizontally arranged into at least three layers on a vertical plane, each layer is provided with at least three heat exchange tubes (51), the end parts of the same side of every two adjacent heat exchange tubes (51) are mutually connected through a heat exchange connecting tube (52), the two adjacent heat exchange connecting tubes (52) are respectively arranged at the two ends of the heat exchange tubes (51), so that a left heat exchange tube layer (41) provided with a water inlet and a water outlet is formed integrally, the left heat exchange tube layer (41) is sequentially provided with at least three layers from bottom to top to form a left heat exchange unit (31),
the right heat exchange unit (32) is formed by connecting right heat exchange tube layers (42), and the right heat exchange tube layers (42) are formed by heat exchange tubes (51) in the following mode: at least nine heat exchange tubes (51) are taken to enable the end surfaces of the heat exchange tubes (51) to be vertically and horizontally arranged into at least three layers on a vertical plane, each layer is provided with at least three heat exchange tubes (51), the end parts of the same side of every two adjacent heat exchange tubes (51) are mutually connected through a heat exchange connecting tube (52), the two adjacent heat exchange connecting tubes (52) are respectively arranged at the two ends of the heat exchange tubes (51), so that a right heat exchange tube layer (42) provided with a water inlet and a water outlet is formed integrally, the right heat exchange tube layer (42) is sequentially provided with at least three layers from bottom to top so as to form a right heat exchange unit (32), and the number of the right heat exchange tube layer (42) is equal to that of the left heat exchange tube layer (41);
the number of the left heat exchange units (31) is equal to that of the right heat exchange units (32), at least two of the left heat exchange units (31) and at least two of the right heat exchange units (32) are arranged, each left heat exchange unit (31) is sequentially arranged on a vertical plane, each right heat exchange unit (32) is also sequentially arranged on the vertical plane, and each right heat exchange unit (32) is respectively arranged on one side of one left heat exchange unit (31);
the left heat exchange unit (31) and the right heat exchange unit (32) are respectively arranged on the left side and the right side of the middle part of the inner cavity of the shell (2), and each left heat exchange unit (31) is respectively connected with one right heat exchange unit (32);
the below of casing (2) inner chamber heat exchange coil (3) is located to bottom plate (6) slope, the top of casing (2) inner chamber heat exchange coil (3) is located in guide plate (7), a side of guide plate (7) is fixed on the lateral wall of casing (2) and is located the top of casing (2) bottom inlet flue, left heat transfer unit (31) and right heat transfer unit (32) are located between baffling board (8), the topside of baffling board (8) and another side of guide plate (7) are connected, leave the clearance between the base of baffling board (8) and bottom plate (6).
2. The secondary heat exchanger for a gas water heater as set forth in claim 1, wherein: the heat exchange coil (3) is composed of a left heat exchange unit (31) and a right heat exchange unit (32) according to the following modes:
the left heat exchange tube layer (41) in each layer in the left heat exchange unit (31) and the right heat exchange tube layer (42) in each layer in the right heat exchange unit (32) are sequentially a 1 st layer, a 2 nd layer, … … and an Nth layer from bottom to top,
the water inlet of the 1 st layer of the left heat exchange tube layer (41) is used as the water inlet of the heat exchange coil (3),
the water outlet of the 1 st layer left heat exchange tube layer (41) is connected with the water inlet of the 2 nd layer right heat exchange tube layer (42) through a surface layer connecting tube (53), the water outlet of the 2 nd layer right heat exchange tube layer (42) is connected with the water inlet of the 3 rd layer right heat exchange tube layer (42) through a heat exchange connecting tube (52), the water outlet of the 3 rd layer right heat exchange tube layer (42) is connected with the water inlet of the 2 nd layer left heat exchange tube layer (41) through a surface layer connecting tube (53),
correspondingly, the water outlet of the i-th left heat exchange tube layer (41) is connected with the water inlet of the i + 1-th right heat exchange tube layer (42) through a surface layer connecting tube (53), the water outlet of the i + 1-th right heat exchange tube layer (42) is connected with the water inlet of the i + 2-th right heat exchange tube layer (42) through a heat exchange connecting tube (52), the water outlet of the i + 2-th right heat exchange tube layer (42) is connected with the water inlet of the i + 1-th left heat exchange tube layer (41) through a surface layer connecting tube (53), wherein i is a positive integer in the interval of [1, N-3],
when i = N-2, the water outlet of the left heat exchange tube layer (41) at the N-2 th layer is connected with the water inlet of the right heat exchange tube layer (42) at the N-1 st layer through a surface layer connecting tube (53), the water outlet of the right heat exchange tube layer (42) at the N-1 st layer is connected with the water inlet of the right heat exchange tube layer (42) at the N th layer through a heat exchange connecting tube (52), the water outlet of the right heat exchange tube layer (42) at the N th layer is connected with the water inlet of the left heat exchange tube layer (41) at the N th layer through a surface layer connecting tube (53), the water outlet of the left heat exchange tube layer (41) at the N th layer is connected with the water inlet of the right heat exchange tube layer (42) at the 1 st layer through a surface layer connecting tube (53),
the water outlet of the 1 st layer right heat exchange tube layer (42) is used as the water outlet of the heat exchange coil (3),
therefore, the left heat exchange unit (31) and the right heat exchange unit (32) form the heat exchange coil (3).
3. A secondary heat exchanger for a gas fired water heater as claimed in claim 2 wherein: the included angle between the surface layer connecting pipe (53) and the horizontal plane is 15-30 degrees, and the lower supporting plate (6) and the surface layer connecting pipe (53) are arranged in parallel;
the distance between the right end of the left heat exchange unit (31) and the left end of the right heat exchange unit (32) is 25-30 mm, the distance between the baffle plate (8) and the right end of the left heat exchange unit (31) is 3-5 mm, and the distance between the bottom end of the baffle plate (8) and the lower support plate (6) is 10-20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023025876.1U CN215062884U (en) | 2020-12-15 | 2020-12-15 | Secondary heat exchanger for gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023025876.1U CN215062884U (en) | 2020-12-15 | 2020-12-15 | Secondary heat exchanger for gas water heater |
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| Publication Number | Publication Date |
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| CN215062884U true CN215062884U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023025876.1U Active CN215062884U (en) | 2020-12-15 | 2020-12-15 | Secondary heat exchanger for gas water heater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116336661A (en) * | 2023-03-28 | 2023-06-27 | 芜湖美的智能厨电制造有限公司 | Condensing heat exchangers and gas appliances |
| CN116558119A (en) * | 2023-04-06 | 2023-08-08 | 青岛经济技术开发区海尔热水器有限公司 | Gas hot water equipment |
| CN117190503A (en) * | 2022-12-29 | 2023-12-08 | 青岛经济技术开发区海尔热水器有限公司 | Condensing gas water heater |
-
2020
- 2020-12-15 CN CN202023025876.1U patent/CN215062884U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117190503A (en) * | 2022-12-29 | 2023-12-08 | 青岛经济技术开发区海尔热水器有限公司 | Condensing gas water heater |
| CN117190503B (en) * | 2022-12-29 | 2026-01-09 | 青岛经济技术开发区海尔热水器有限公司 | Condensing gas water heater |
| CN116336661A (en) * | 2023-03-28 | 2023-06-27 | 芜湖美的智能厨电制造有限公司 | Condensing heat exchangers and gas appliances |
| CN116558119A (en) * | 2023-04-06 | 2023-08-08 | 青岛经济技术开发区海尔热水器有限公司 | Gas hot water equipment |
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