CN210165581U - Combustion heat exchange device with multistage heat insulation structure - Google Patents
Combustion heat exchange device with multistage heat insulation structure Download PDFInfo
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- CN210165581U CN210165581U CN201921041501.9U CN201921041501U CN210165581U CN 210165581 U CN210165581 U CN 210165581U CN 201921041501 U CN201921041501 U CN 201921041501U CN 210165581 U CN210165581 U CN 210165581U
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Abstract
The utility model discloses a burning heat transfer device with multistage adiabatic structure, include: a burner; a heat exchanger; a combustion chamber; the combustion heat exchange device is provided with a combustion chamber inner wall and a combustion chamber outer wall, and an air flow channel is formed between the combustion chamber inner wall and the combustion chamber outer wall; the inner wall of the combustion chamber comprises at least two guide walls arranged at intervals in a subsection manner from top to bottom, and a guide channel communicated with the air flow channel and used for guiding air to flow upwards along the upper section of the guide wall is formed between the adjacent guide walls. The utility model has simple structure, the air in the air supply channel can play the role of obstructing the heat transfer between the inner wall and the outer wall of the combustion chamber and reducing the temperature of the combustion chamber; meanwhile, the guide channel between the guide walls can guide the air in the air supply channel to cool the guide wall at the previous section in a segmented manner, so that the effect of further cooling the combustion chamber is achieved.
Description
Technical Field
The utility model relates to a heat exchange equipment technical field, in particular to burning heat transfer device with multistage adiabatic structure.
Background
A combustion heat exchanger is generally provided in a heating device for heating water by using combustion heat generated during combustion of fuel and circulating the heated water along a pipe to heat a room or supply hot water; such combustion heat exchange devices generally include: the heat exchanger is configured to include a burner that generates high-temperature heat energy by burning fuel gas, a heat exchanger that heats water inside by using the combustion heat of the burner, and a combustion chamber formed between the burner and the heat exchanger. In this case, if the high-temperature heat energy generated inside the combustion chamber is transmitted to the outside of the combustion chamber, thermal damage is caused to devices around the combustion chamber, and therefore, in order to prevent this, a device for cooling the combustion chamber is required. In the apparatus for cooling the combustion chamber, conventionally, a commonly used structure can be classified into: a Dry method (Dry type) in which a heat insulating material is used for the inner wall of the combustion chamber, and a Wet method (Wet type) in which a heating water pipe is wound around the outer wall of the combustion chamber. The dry method requires the use of a heat insulating material, which increases the manufacturing cost of the combustion chamber, and has a problem that the cooling effect of the combustion chamber is not significant even if the heat insulating material is used. The wet process has higher thermal efficiency than the dry process, but has a complicated structure and may generate condensed water on the inner wall of the combustion chamber, and if it is made of a copper pipe material, there is a problem in that the manufacturing cost is increased. If a material resistant to condensed water (e.g., stainless steel) is used in order to solve the above-mentioned problems, there is a problem that the manufacturing is troublesome.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome defect among the above-mentioned prior art, provide a burning heat transfer device with multistage adiabatic structure, through the multistage guide wall that the segmentation interval set up, form the guide channel of guide air along the motion of one section last guide wall between the guide wall to can realize that the air carries out the segmentation cooling to multistage guide wall, thereby effectively improve the cooling effect of combustion chamber.
To achieve the above object, the present invention provides a combustion heat exchange device having a multistage heat insulating structure, including:
a burner;
a heat exchanger;
a combustion chamber formed between the burner and the heat exchanger;
the combustion heat exchange device comprises:
the inner wall of the combustion chamber is arranged around the outer side of the combustion chamber;
the combustion chamber outer wall is at least provided with one layer and is arranged on the outer side of the combustion chamber inner wall in a surrounding way;
an air flow channel for guiding air flow is formed between the inner wall of the combustion chamber and at least one layer of the outer wall of the combustion chamber;
the inner wall of the combustion chamber comprises at least two guide walls arranged at intervals in a subsection manner from top to bottom, and a guide channel communicated with the air flow channel and used for guiding air to flow upwards along the upper section of the guide wall is formed between the adjacent guide walls.
Further setting the following steps: the guide wall of the next section is positioned on the inner side of the guide wall of the previous section, the upper end part of the guide wall of the next section is higher than the lower end part of the guide wall of the previous section, and a guide channel is formed by matching the adjacent guide walls.
Further setting the following steps: and a connecting wall is connected between the lower end part of the guide wall of the previous section and the guide wall of the next section between the adjacent guide walls, and an air outlet communicated with the guide channel is formed above the corresponding connecting wall of the guide wall of the previous section.
Further setting the following steps: the guide wall of the next section and the guide wall of the previous section are positioned on the same vertical plane or positioned on the inner side of the guide wall of the previous section, the guide wall positioned on the next section is provided with an extension wall, the extension wall extends upwards to the outer side of the guide wall of the previous section, and a guide channel is formed between the extension wall and the guide wall in a matching manner.
Compared with the prior art, the utility model has simple structure and convenient manufacture, can obstruct the heat transfer between the inner wall and the outer wall of the combustion chamber through the air flowing in the air flowing channel, plays the role of reducing the temperature of the outer wall of the combustion chamber, and simultaneously can preheat the air supplied to the combustor through the air flowing channel in the flowing process, thereby playing the role of improving the combustion efficiency of the combustor; moreover, the guide channel formed between the guide walls forming the inner wall of the combustion chamber can guide the air in the air flow channel to cool the guide wall at the previous section in a segmented manner, so that the aim of cooling the combustion chamber is further fulfilled.
Drawings
FIG. 1 is a schematic view of a vertical cross-section of a combustion heat exchange unit having a multi-stage heat insulating structure according to the present invention;
FIG. 2 is a schematic cross-sectional view of a combustion heat exchange device;
FIG. 3 is a schematic view of a second embodiment of a mating structure between the inner and outer walls of the combustion chamber;
FIG. 4 is a schematic view of an exemplary embodiment of a triple fitting arrangement between the inner and outer walls of the combustion chamber;
FIG. 5 is a schematic view of an exemplary embodiment of a four-piece mating arrangement between inner and outer walls of a combustion chamber;
FIG. 6 is a schematic diagram of an example five-fitting structure between the inner and outer walls of the combustion chamber.
The following reference numerals are marked thereon in conjunction with the accompanying drawings:
1. a burner; 2. a heat exchanger; 3. a combustion chamber; 4. the inner wall of the combustion chamber; 41. a first stage guide wall; 42. a second-stage guide wall; 43. a third stage guide wall; 44. a connecting wall; 45. an air outlet; 46. a last-stage air wall; 47. a third-level air wall; 48. a secondary air wall; 49. a primary air wall; 410. an extension wall; 5. an outer wall of the combustion chamber; 6. an air flow passage; 7. a guide channel.
Detailed Description
In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.
The arrows in fig. 1 indicate the direction of flow of the air.
The utility model relates to a burning heat transfer device with multistage adiabatic structure is shown in figure 1, including the casing and set up combustor 1 and heat exchanger 2 in the casing, this casing corresponds and is formed with combustion chamber 3 between combustor 1 and the heat exchanger 2, and the mixture of the 1 combustion air of this combustor and gas produces the high temperature flue gas, and this heat exchanger 2 can utilize the high temperature flue gas that the 1 burning of combustor produced to generate heat exchange rather than inside water and heat water.
As shown in fig. 1 and 2, in the present embodiment, the casing includes a layer of combustion chamber inner wall 4 and a layer of combustion chamber outer wall 5, the combustion chamber inner wall 4 is arranged around the outside of the combustion chamber 3, the combustion chamber outer wall 5 is arranged around the outside of the combustion chamber inner wall 4, the inner wall 4 of the combustion chamber and the outer wall 5 of the combustion chamber cooperate to form an air flow passage 6 for the flow of air, the outlet at the tail end of the air flow channel 6 is communicated with the combustor 1, air outside the shell enters the air flow channel inside the shell through a forced blowing or forced pumping mode, by the air flowing in the air flow passage 6, the final stage air wall 46 can be formed in the air flow passage 6, therefore, the heat transfer between the inner wall 4 of the combustion chamber and the outer wall 5 of the combustion chamber can be effectively blocked, and the heat dissipation can be accelerated to achieve the purpose of cooling; meanwhile, the air is preheated by heat exchange with high-temperature flue gas generated by combustion of the combustor 1 in the flowing process of the air in the air flowing channel 6, so that the combustion efficiency of the combustor 1 can be improved.
As shown in fig. 1, the inner wall 4 of the combustion chamber includes at least two guiding walls arranged in a step structure from top to bottom, the guiding wall of the next stage is located inside the guiding wall of the previous stage, in this embodiment, the guiding walls are three stages, namely, a first stage guiding wall 41, a second stage guiding wall 42 and a third stage guiding wall 43, a guiding passage 7 communicating with the air flow passage 6 and guiding the air upwards along the guiding wall of the previous stage is formed between the two adjacent guiding walls, that is, a first stage guiding passage 7 for guiding the air upwards along the first stage guiding wall 41 is formed between the first stage guiding wall 41 and the second stage guiding wall 42, so as to form a third stage air wall 47 along the outside of the first stage guiding wall 41, and similarly, a second stage air wall 48 is formed corresponding to the outside of the second stage guiding wall 42, and a primary air wall 49 is formed corresponding to the outside of the third stage guiding wall 43, so that the air in the air flow passage 6 can sectionally cool the first, second and third stage guide walls 43, thereby effectively improving the cooling effect of the combustion chamber 3.
As shown in fig. 1, the two adjacent guide walls are arranged at intervals, and the upper end part of the guide wall of the next stage is higher than the lower end part of the guide wall of the previous stage, so that a guide channel 7 is formed between the two guide walls; the adjacent two guide walls may be arranged in an open structure, and the gap between the two guide walls forms the inlet of the guide channel 7 adjacent to the air flow channel 6.
As shown in fig. 3, compared with the first embodiment of fig. 1, the two adjacent guide walls of this embodiment are arranged in a closed structure, that is, a connecting wall 44 is arranged between the lower end of the guide wall of the previous stage and the guide wall of the next stage, the connecting wall 44 closes the gap between the two, an air outlet hole 45 is formed in the guide wall of the previous stage above the connecting wall 44, and the air in the air flow channel 6 enters the guide channel 7 from the air outlet hole 45 and is guided to move upward along the channel.
As shown in fig. 1 and 4, the inner wall 4 of the combustion chamber comprises an inner wall and at least one layer of the outer side of the combustion chamber 3; in fig. 1, the outer wall 5 of the combustion chamber is a layer, and an air flow channel 6 is formed between the outer wall 5 of the combustion chamber and the inner wall 4 of the combustion chamber; in fig. 4, the combustion chamber outer walls 5 of the third embodiment are two layers, and a continuous air flow channel 6 is formed between the first layer combustion chamber outer wall 5 and the second layer combustion chamber outer wall 5, and between the second layer combustion chamber outer wall 5 and the combustion chamber inner wall 4; similarly, the number of layers of the outer wall 5 of the combustion chamber may be increased or decreased as required, and is three or more, again without limitation.
As shown in fig. 5 and 6, compared with fig. 1, in this embodiment, the multiple guide walls arranged in segments forming the inner wall 4 of the combustion chamber are all in the same vertical plane (fig. 5), the wall at the upper end of the next guide wall is provided with an extension wall 410 extending upward to the outer side of the guide wall at the previous section, and the extension wall 410 and the previous guide wall cooperate to form a guide channel 7; alternatively, the guiding wall of the next stage is located at the inner side of the guiding wall of the previous stage (fig. 6), the upper end of the guiding wall of the next stage has an extending wall 410 extending upwards to the outer side of the guiding wall of the previous stage, and the extending wall 410 and the guiding wall of the previous stage cooperate to form the guiding channel 7.
Compared with the prior art, the utility model has simple structure and convenient manufacture, can obstruct the heat transfer between the inner wall and the outer wall of the combustion chamber through the air flowing in the air flowing channel, plays the role of reducing the temperature of the outer wall of the combustion chamber, and simultaneously can preheat the air supplied to the combustor through the air flowing channel in the flowing process, thereby playing the role of improving the combustion efficiency of the combustor; moreover, the guide channel formed between the guide walls forming the inner wall of the combustion chamber can guide the air in the air flow channel to cool the guide wall at the previous section in a segmented manner, so that the aim of cooling the combustion chamber is further fulfilled.
The above disclosure is only for the embodiment of the present invention, however, the present invention is not limited thereto, and any changes that can be considered by those skilled in the art should fall within the protection scope of the present invention.
Claims (4)
1. A combustion heat exchange unit having a multi-stage thermal insulation structure, comprising:
a burner;
a heat exchanger;
a combustion chamber formed between the burner and the heat exchanger;
characterized in that the combustion heat exchange device comprises:
the inner wall of the combustion chamber is arranged around the outer side of the combustion chamber;
the outer wall of the combustion chamber is arranged around the outer side of the inner wall of the combustion chamber;
an air flow channel for guiding air flow is formed between the inner wall of the combustion chamber and the outer wall of the combustion chamber;
the inner wall of the combustion chamber comprises at least two guide walls arranged at intervals in a subsection manner from top to bottom, and a guide channel communicated with the air flow channel and used for guiding air to flow upwards along the upper section of the guide wall is formed between the adjacent guide walls.
2. The combustion heat exchange device with the multistage heat insulation structure as claimed in claim 1, wherein the guide wall of the next stage is located inside the guide wall of the previous stage, the upper end part of the guide wall of the next stage is higher than the lower end part of the guide wall of the previous stage, and the adjacent guide walls are matched to form a guide channel.
3. The combustion heat exchange device with the multistage heat insulation structure as claimed in claim 2, wherein a connecting wall is connected between the lower end part of the guide wall of the previous stage and the guide wall of the next stage between the adjacent guide walls, and an air outlet communicated with the guide channel is formed above the guide wall of the previous stage corresponding to the connecting wall.
4. The combustion heat exchange device with the multistage heat insulation structure is characterized in that the guide wall of the next section and the guide wall of the previous section are located on the same vertical plane or located on the inner side of the guide wall of the previous section, the guide wall of the next section is provided with an extension wall, the extension wall extends upwards to the outer side of the guide wall of the previous section, and a guide channel is formed between the extension wall and the guide wall in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921041501.9U CN210165581U (en) | 2019-07-04 | 2019-07-04 | Combustion heat exchange device with multistage heat insulation structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921041501.9U CN210165581U (en) | 2019-07-04 | 2019-07-04 | Combustion heat exchange device with multistage heat insulation structure |
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| CN210165581U true CN210165581U (en) | 2020-03-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173897A (en) * | 2019-07-04 | 2019-08-27 | 广东省众骋热能科技有限公司 | A kind of combustion heat-exchange device with multiple-stage adiabatic structure |
-
2019
- 2019-07-04 CN CN201921041501.9U patent/CN210165581U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173897A (en) * | 2019-07-04 | 2019-08-27 | 广东省众骋热能科技有限公司 | A kind of combustion heat-exchange device with multiple-stage adiabatic structure |
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