CN110822534A - Chimney with explosion-proof structure and gas fireplace comprising same - Google Patents
Chimney with explosion-proof structure and gas fireplace comprising same Download PDFInfo
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- CN110822534A CN110822534A CN201910385233.0A CN201910385233A CN110822534A CN 110822534 A CN110822534 A CN 110822534A CN 201910385233 A CN201910385233 A CN 201910385233A CN 110822534 A CN110822534 A CN 110822534A
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- cover plate
- pressure relief
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- 238000004880 explosion Methods 0.000 claims abstract description 55
- 230000005484 gravity Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 70
- 238000002485 combustion reaction Methods 0.000 description 10
- 239000000446 fuel Substances 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/122—Arrangement or mounting of control or safety devices on stoves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/08—Arrangements for drainage, venting or aerating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/10—Fire place
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a chimney with an explosion-proof cover structure and a gas fireplace comprising the same. The gas fireplace comprising the chimney further comprises a hearth, wherein the gas inlet interface on the hearth is connected with the gas inlet chimney on the chimney, the gas outlet interface on the hearth is connected with the gas outlet interface on the chimney, and the inner cavity of the hearth is completely sealed and isolated from the outside. After the invention is used for the balanced type gas fireplace, an anti-explosion structure and a pressure relief opening are not required to be additionally arranged at the top of the hearth of the balanced type gas fireplace, once the gas fireplace explodes, the anti-explosion cover plate is opened, and the pressure relief is carried out through the pressure relief opening on the chimney.
Description
Technical Field
The invention belongs to the technical field of gas fireplaces, and particularly relates to a chimney with an explosion-proof structure and a gas fireplace comprising the same.
Background
As a heating device using clean energy, a gas fireplace not only can provide sufficient heating effect, but also can provide real flame for viewing and enjoying compared with a heater (such as a wall-mounted stove), and is popular with consumers. At present, gas fireplaces are divided into open type and balanced type according to the structure of air intake and exhaust, the balanced type gas fireplaces refer to the gas fireplaces which are sealed in the cavity inside the fireplaces, the combustion-supporting air is used for air intake outdoors, and the exhaust is exhausted outdoors. The chimney used by the balance type fuel gas is generally a double-layer chimney, the outer layer of the chimney is used for combustion-supporting air intake, and the inner layer of the chimney is used for exhaust, or two independent chimneys are used for intake and exhaust respectively.
Upon failure and/or improper operation of a gas fireplace, a significant amount of combustible gas can accumulate inside the fireplace cavity, in which case ignition can occur and an explosion can occur. The smoke outlet of the chimney is small in opening size for preventing a large amount of outdoor air from flowing backwards, and high pressure generated by explosion cannot be discharged in time, so that the glass of the fireplace can be broken, and even the fireplace is disassembled. Therefore, the balanced gas fireplace needs to be provided with an explosion-proof structure as a pressure relief opening during explosion, and instantaneous high pressure generated by explosion is released through the pressure relief opening.
The explosion-proof structure of the prior balanced gas fireplace is arranged on the body of the fireplace, for example, a pressure relief opening is arranged on the top or the side of a hearth, and the inner cavity is sealed by a cover with certain pre-pressure. However, in order to reliably release the pressure, the pre-pressure on the cover cannot be made to be large, so that the pressure release port cannot be reliably sealed, and tail gas generated by fuel combustion can leak into a room during working, so that the personal safety of a user is threatened. Meanwhile, flame can be sprayed out of the pressure relief port during explosion, so that a user can be burned or nearby combustible materials can be ignited, and a fire can be caused.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a chimney with an explosion-proof structure and a gas fireplace comprising the chimney. After the structure of the invention is used for the balanced type gas fireplace, the pressure relief opening arranged on the top or the side of the hearth cavity of the gas fireplace can be avoided, so that the hearth cavity has good sealing performance, and meanwhile, the product can be prevented from threatening the personal safety of a user during explosion.
(II) technical scheme
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a chimney with explosion-proof structure, includes chimney and explosion-proof apron, the chimney has gas vent, air inlet and pressure release mouth the outside of pressure release mouth sets up explosion-proof apron, explosion-proof apron can outwards be opened under the effect of certain external force, and explosion-proof apron can be under certain pretightning force will the pressure release mouth seals, the open area of pressure release mouth is greater than the air inlet.
Further, the chimney divide into the ectonexine chimney, intake chimney and exhaust chimney promptly, the pressure release mouth face the exhaust chimney sets up, or the chimney divide into two independent chimneys, intake chimney and exhaust chimney promptly, the pressure release mouth set up the exhaust chimney on, promptly the pressure release mouth can set up on double-deck chimney, also can set up on the individual layer chimney, intake chimney with the air inlet intercommunication, exhaust chimney with the gas vent intercommunication.
Furthermore, the explosion-proof cover plate is installed on the chimney through a hinge, a torsion spring is arranged on the explosion-proof cover plate, and the torsion spring seals the explosion-proof cover plate to the pressure relief opening through a pretightening force.
Furthermore, a plurality of guide rods are arranged on the chimney, compression springs are arranged on the guide rods, and the explosion-proof cover plate provides pretightening force through the compression springs, so that the explosion-proof cover plate seals the pressure relief opening.
Furthermore, a gravity block is arranged on the explosion-proof cover plate, and the explosion-proof cover plate seals the pressure relief opening under the action of the gravity block.
Furthermore, in order to timely discharge high-pressure gas generated by explosion during explosion, the total length of the chimney is between 0.3 and 5 meters.
In another aspect, the invention also provides a gas fireplace comprising the chimney. The technical scheme adopted by the invention for solving the technical problem is as follows: the gas fireplace further comprises a hearth, a cavity is formed inside the hearth, an exhaust interface and an air inlet interface are further arranged on the hearth, and except the exhaust interface and the air inlet interface, the inner cavity of the hearth is completely sealed and isolated from the external space.
And an exhaust interface on the hearth is connected with the exhaust chimney, and an air inlet interface on the hearth is connected with the air inlet chimney.
When the gas fireplace works normally, the explosion-proof cover plate completely covers the pressure relief opening under a certain pretightening force, combustion-supporting air enters from the air inlet of the chimney, the combustion-supporting air enters the hearth through the air inlet chimney and the air inlet interface to support combustion of fuel combustion, tail gas generated after combustion is discharged from the air outlet through the air outlet interface and the air outlet chimney, an inner cavity of the hearth is completely isolated from an external space, and gas exchange cannot occur between the interior of the hearth and the external environment.
When a large amount of combustible gas is possibly accumulated in a cavity inside a hearth of the gas fireplace, once ignition operation is started, the combustible gas inside the hearth is instantly ignited to explode, the pressure inside the hearth is instantly increased, at the moment, the pressure can reach the exhaust port and the pressure relief port through the exhaust chimney, the size of the exhaust port is too small to release the pressure generated by explosion, and then the pressure is acted on the explosion-proof cover plate.
Furthermore, the bottom of the hearth is provided with an auxiliary pressure relief opening, because the pressure relief opening faces the exhaust chimney, combustible gas accumulated in the hearth possibly exists at the bottom of the hearth, the distance from the bottom of the hearth to the pressure relief opening is long, and auxiliary pressure relief during explosion can be performed through the auxiliary pressure relief opening at the bottom of the hearth.
(III) advantageous effects
Compared with the prior art, its beneficial effect is:
according to the chimney with the anti-explosion structure, the anti-explosion structure is arranged on the chimney, and the anti-explosion structure is not required to be arranged at the top or the side of the hearth cavity of the balanced gas fireplace, so that the harm to products and human bodies during explosion can be prevented, the hearth cavity can be completely isolated from the indoor space of the balanced gas fireplace, the leakage caused by poor sealing of the pressure relief opening can be avoided, the change of air around the use environment is not influenced, namely combustion-supporting air is completely introduced from the outdoor, and the generated tail gas is also exhausted out of the outdoor.
Drawings
Fig. 1 is a schematic perspective view of a chimney according to embodiment 1 of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a of a chimney according to embodiment 1 of the present invention.
Fig. 3 is a schematic half-section view of a chimney according to embodiment 1 of the present invention.
Fig. 4 is a schematic perspective view of the chimney in explosion according to embodiment 1 of the present invention.
Fig. 5 is a schematic half-section view of a chimney in explosion in example 1 of the present invention.
FIG. 6 is a schematic perspective view of a gas fireplace in accordance with embodiment 2 of the present invention.
FIG. 7 is a schematic view in half section of a gas fireplace in accordance with embodiment 2 of the present invention.
FIG. 8 is a schematic perspective view of a gas fireplace as an example 2 of the invention in an exploded configuration.
FIG. 9 is a schematic view in half section of a gas fireplace as embodied 2 of the present invention in an exploded condition.
Fig. 10 is a schematic perspective view of a chimney according to embodiment 3 of the present invention.
Fig. 11 is a schematic half-section view of a chimney in explosion in the embodiment 3 of the invention.
Fig. 12 is a partially enlarged cross-sectional view of a portion B of a chimney according to embodiment 3 of the present invention.
Fig. 13 is a schematic perspective view of a chimney according to embodiment 4 of the present invention.
Fig. 14 is a schematic half-section view of a chimney according to embodiment 4 of the present invention.
Fig. 15 is a schematic perspective view of the chimney in explosion according to embodiment 4 of the present invention.
Fig. 16 is a schematic perspective view of a chimney according to embodiment 5 of the present invention.
Fig. 17 is a partially enlarged schematic view of a portion C of a chimney according to embodiment 5 of the present invention.
FIG. 18 is a schematic half-section view of a chimney according to example 5 of the present invention.
FIG. 19 is a schematic half-section view of a chimney in explosion in accordance with example 5 of the present invention.
FIG. 20 is a schematic perspective view of a gas fireplace in accordance with embodiment 6 of the present invention.
FIG. 21 is an enlarged partial schematic view of the D section of a gas fireplace embodiment 6 of the invention.
FIG. 22 is a schematic view in half section of a gas fireplace in accordance with an embodiment 6 of the present invention.
FIG. 23 is a schematic perspective view of a gas fireplace as embodied 6 of the invention in an exploded configuration.
FIG. 24 is a schematic view in half section of a gas fireplace embodying features of the present invention in an exploded view.
The corresponding names of the components in the figure are as follows: 1-a chimney; 2-an explosion-proof cover plate; 3-a hinge; 4-a gas fireplace; 5-a guide rod; 11-an air intake chimney; 12-an exhaust stack; 13-a pressure relief port; 14-an air inlet; 15-an exhaust port; 16-terminal cover; 21-gravity block; 31-a rotating shaft; 32-torsion spring; 41-hearth; 42-exhaust interface; 43-an air intake interface; 44-auxiliary pressure relief port; 45-auxiliary explosion-proof cover plate; 51-compression spring.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1 chimney
As shown in fig. 1 to 4, a chimney with an explosion-proof structure includes a chimney 1 and an explosion-proof cover plate 2, where the chimney 1 is a double-layer chimney, that is, the chimney 1 is divided into an outer air inlet chimney 11 and an inner exhaust chimney 12, the air inlet chimney 11 and the exhaust chimney 12 are eccentrically disposed, in this embodiment 1, the length of the chimney 1 is 0.8 meter, the chimney 1 is provided with a pressure relief opening 13, the pressure relief opening 13 faces the exhaust chimney 12, the explosion-proof cover plate 2 is disposed outside the pressure relief opening 13, a hinge 3 is disposed between the chimney 1 and the explosion-proof cover plate 2 for connection, the hinge 3 is provided with a rotating shaft 31, the explosion-proof cover plate 2 can rotate around the rotating shaft 31 on the hinge 3 to open outwards, the hinge 3 is provided with a torsion spring 32, and the torsion spring 32 has a certain pre-tightening force, so as to enable. The chimney 1 is also provided with an air inlet 14 and an air outlet 15, wherein the air inlet 14 is communicated with the air inlet chimney 11, and the air outlet 15 is communicated with the exhaust chimney 12.
As shown in fig. 1 to 3, during normal operation, the explosion-proof cover plate 2 completely covers the pressure relief opening 13 under the pre-tightening force of the torsion spring 32, and combustion-supporting air enters from the air inlet 14 and combusted tail gas is exhausted from the exhaust chimney 12 and the exhaust port 15.
As shown in FIGS. 4-5, during the explosion, the impact force that the explosion produced is greater than torsion spring 32's pretightning force far away, then the high-pressure gas that the explosion produced will break away explosion-proof cover plate 2 for explosion-proof cover plate 2 is opened in the twinkling of an eye, carries out the pressure release through pressure release mouth 13 to the high-pressure gas of gas fireplace furnace inside.
EXAMPLE 2 gas fireplace
As shown in fig. 6 to 9, the gas fireplace 4 comprises a chimney with an explosion-proof structure as described in embodiment 1, and further comprises a hearth 41, a cavity is formed inside the hearth, an exhaust interface 42 and an air inlet interface 43 are further arranged on the hearth, the exhaust interface 42 is connected with the exhaust chimney 12, the air inlet interface 43 is connected with the air inlet chimney 11, and the inner cavity of the hearth 41 except for the exhaust interface 42 and the air inlet interface 43 is completely sealed and isolated from the outside.
In addition, an auxiliary pressure relief opening 44 is further formed in the bottom of the hearth 41, an auxiliary explosion-proof cover plate 45 is arranged outside the auxiliary pressure relief opening 44, and the auxiliary explosion-proof cover plate 45 seals the auxiliary pressure relief opening 44 under the action of a pre-tightening force.
As shown in fig. 6 to 7, when the gas fireplace 4 normally works, the explosion-proof cover plate 2 completely covers the pressure relief opening 13 under the pre-tightening force of the torsion spring 32, combustion-supporting air enters from the air inlet 14 of the air inlet chimney 11 and enters the inside of the hearth 41 through the air inlet interface 43 to support combustion of fuel combustion, tail gas generated after combustion enters the exhaust chimney 12 through the exhaust interface 42 and then is exhausted from the exhaust chimney 12 and the exhaust port 15, the internal cavity of the gas fireplace 4 product is completely isolated from the external environment, and gas exchange cannot occur between the inside of the hearth and the external environment.
As shown in fig. 8 to 9, when a large amount of combustible gas may be accumulated in the inner cavity of the hearth 41 of the gas fireplace 4, once the ignition operation is started, the combustible gas inside the hearth 41 of the gas fireplace 4 is instantly ignited to explode, the internal pressure of the hearth 41 is instantly increased, at this time, the pressure can reach the exhaust port 15 and the pressure relief port 13 through the exhaust chimney 12, because the size of the exhaust port 15 is too small to release the pressure generated by the explosion, and then acts on the explosion-proof cover plate 2, because the impact force generated by the explosion is far greater than the pre-tightening force of the torsion spring 32, the high-pressure gas generated by the explosion will flush the explosion-proof cover plate 2, the pressure inside the hearth 41 can be relieved through the pressure relief port 13, and because the bottom of the hearth 41 is far from the pressure relief port 13, the pressure at the bottom of the hearth, the high pressure generated by explosion is prevented from generating great threat to the personal safety of users.
Example 3 chimney
As shown in fig. 10 to 12, a chimney with an explosion-proof structure includes a chimney 1 and an explosion-proof cover plate 2, where the chimney 1 is a double-layer chimney, that is, the chimney 1 is divided into an outer air inlet chimney 11 and an inner exhaust chimney 12, the air inlet chimney 11 and the exhaust chimney 12 are concentrically arranged, in this embodiment 3, the length of the chimney 1 is 0.8 meter, the chimney 1 is provided with a pressure relief opening 13, the pressure relief opening 13 faces the exhaust chimney 12, the explosion-proof cover plate 2 is arranged outside the pressure relief opening 13, a guide rod 5 is arranged outside the explosion-proof cover plate 2, the guide rod 5 is provided with a compression spring 51, and the compression spring 51 has a certain pre-tightening force and acts on the explosion-proof cover plate 2 to urge the explosion-proof cover plate 2 to close the pressure relief. The explosion-proof cover plate 2 can move outwards along the guide rod 5 under certain external force. The chimney 1 is also provided with an air inlet 14 and an air outlet 15, wherein the air inlet 14 is communicated with the air inlet chimney 11, and the air outlet 15 is communicated with the exhaust chimney 12.
During explosion, the impact force generated by explosion is far greater than the pretightening force of the compression spring 51, and then the high-pressure gas generated by explosion can burst the explosion-proof cover plate 2, so that the explosion-proof cover plate 2 is opened instantly, and the high-pressure gas in the hearth 41 is decompressed through the decompression opening 13.
Example 4 chimney
As shown in fig. 13 to 15, a chimney with an explosion-proof structure comprises a chimney 1 and an explosion-proof cover plate 2, wherein the chimney 1 is a double-layer chimney, namely an air inlet chimney 11 at the outer layer and an exhaust chimney 12 at the inner layer, the air inlet chimney 11 and the exhaust chimney 12 are eccentrically arranged, in the embodiment 4, the length of the chimney 1 is 0.8 meter, the chimney 1 is provided with a pressure relief opening 13, the pressure relief opening 13 faces the exhaust chimney 12, the explosion-proof cover plate 2 is arranged outside the pressure relief opening 13, in addition, a hinge 3 is arranged between the chimney 1 and the anti-explosion cover plate 2 for connection, a rotating shaft 31 is arranged on the hinge 3, the anti-explosion cover plate 2 can rotate outwards around the rotating shaft 31 on the hinge 3 to be opened, a gravity block 21 is arranged on the anti-explosion cover plate 2, and the anti-explosion cover plate 2 tends to turn downwards under the action of the gravity block 21, so that a pretightening force is provided to enable the anti-explosion cover plate 2 to close the pressure relief opening 13. The chimney 1 is also provided with an air inlet 14 and an air outlet 15, wherein the air inlet 14 is communicated with the air inlet chimney 11, and the air outlet 15 is communicated with the exhaust chimney 12.
During explosion, the impact force generated by explosion is far greater than the pretightening force generated by the gravity of the gravity block 21 on the explosion-proof cover plate 2, and then the high-pressure gas generated by explosion can burst the explosion-proof cover plate 2, so that the explosion-proof cover plate 2 is instantly opened, and the high-pressure gas in the hearth 41 is decompressed through the decompression port 13.
Example 5 chimney
As shown in fig. 15 to 19, a chimney with an explosion-proof structure comprises a chimney 1 and an explosion-proof cover plate 2, wherein the chimney 1 is a double-layer chimney, namely an air inlet chimney 11 which is divided into an outer layer and an exhaust chimney 12 which is divided into an inner layer, the air inlet chimney 11 and the exhaust chimney 12 are concentrically arranged, in the embodiment 5, the chimney is also provided with a terminal cover 16, the length of the chimney 1 is 0.8 meter, the terminal cover 16 of the chimney 1 is provided with a pressure relief opening 13, the pressure relief opening 13 faces the exhaust chimney 12, the anti-explosion cover plate 2 is arranged outside the pressure relief opening 13, in addition, a hinge 3 is arranged between the terminal cover 16 and the explosion-proof cover plate 2 for connection, a rotating shaft 31 is arranged on the hinge 3, the explosion-proof cover plate 2 can rotate around the rotating shaft 31 on the hinge 3 and is opened outwards under the action of external force, a torsion spring 32 is arranged on the hinge 3, and the torsion spring 32 has certain pretightening force to enable the explosion-proof cover plate 2 to close the pressure relief opening 13. The terminal cover 16 is further provided with an air inlet 14 and an air outlet 15, the air inlet 14 is communicated with the air inlet chimney 11, and the air outlet 15 is communicated with the exhaust chimney 12.
During explosion, the impact force generated by explosion is far greater than the pretightening force of the torsion spring 32, and then the high-pressure gas generated by explosion can burst the explosion-proof cover plate 2, so that the explosion-proof cover plate 2 is opened instantly, and the high-pressure gas in the hearth 41 is decompressed through the decompression opening 13.
EXAMPLE 6 gas fireplace
As shown in fig. 20 to 24, the gas fireplace 4 includes a chimney 1 and an explosion-proof cover plate 2, the chimney 1 is two independent chimneys, namely, an air inlet chimney 11 and an exhaust chimney 12, in this embodiment 6, the lengths of the air inlet chimney 11 and the exhaust chimney 12 are both about 0.8 meter, the exhaust chimney 12 is provided with a pressure relief opening 13, the pressure relief opening 13 faces the exhaust chimney 12, the explosion-proof cover plate 2 is disposed outside the pressure relief opening 13, a hinge 3 is disposed between the exhaust chimney 12 and the explosion-proof cover plate 2 for connection, the hinge 3 is provided with a rotating shaft 31, the explosion-proof cover plate 2 can rotate around the rotating shaft 31 on the hinge 3 and open outwards under the action of an external force, the hinge 3 is provided with a torsion spring 32, and the torsion spring 32 has a certain pre-tightening force to cause the explosion-proof cover plate 2 to close. In addition, an air inlet 14 and an air outlet 15 are provided, the air inlet 14 is communicated with the air inlet chimney 11, and the air outlet 15 is communicated with the air outlet chimney 12.
The gas fireplace 4 further comprises a hearth 41, a closed cavity is formed inside the hearth 41, an exhaust interface 42 and an air inlet interface 43 are further arranged on the hearth 41, the exhaust interface 42 is connected with the exhaust chimney 12, the air inlet interface 43 is connected with the air inlet chimney 11, and the inner cavity of the hearth 41 is completely sealed and isolated from the outside except for the exhaust interface 42 and the air inlet interface 43. In addition, an auxiliary pressure relief opening 44 is further formed in the bottom of the hearth 41, an auxiliary explosion-proof cover plate 45 is arranged outside the auxiliary pressure relief opening 44, and the auxiliary explosion-proof cover plate 45 seals the auxiliary pressure relief opening 44 under the action of a certain pre-tightening force.
As shown in fig. 20 to 22, when the gas fireplace 4 normally works, the explosion-proof cover plate 2 completely covers the pressure relief opening 13 under the pre-tightening force of the torsion spring 32, combustion-supporting air enters from the air inlet 14 and enters the inside of the hearth 41 through the air inlet interface 43 to support combustion of fuel combustion, tail gas generated after combustion enters the exhaust chimney 12 through the exhaust interface 42 and then is exhausted from the exhaust chimney 12 and the exhaust port 15, the internal cavity of the hearth 41 is completely isolated from the indoor environment, and gas exchange between the inside of the hearth and the external environment cannot occur.
As shown in fig. 22-23, when a large amount of combustible gas may accumulate in the internal cavity of the furnace 41, once the ignition operation is started, the combustible gas in the furnace 41 is instantaneously ignited to explode, the internal pressure of the furnace 41 is instantaneously increased, and the pressure can reach the exhaust port 15 and the pressure relief port 13 through the exhaust chimney 12, since the size of the vent 15 is too small to release the pressure generated by the explosion, and thus acts on the explosion-proof cover plate 2, because the impact force generated by explosion is far larger than the pretightening force of the torsion spring 32, the high-pressure gas generated by explosion can burst the explosion-proof cover plate 2, the pressure in the hearth 41 can be relieved through the pressure relief opening 13, and because the bottom of the hearth 41 is far away from the pressure relief port 13, the pressure at the bottom of the furnace body 41 can be timely released through the auxiliary pressure relief port 44, and the high pressure generated by explosion is prevented from generating great threat to the personal safety of a user.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a chimney with explosion-proof structure which characterized in that: the anti-explosion chimney comprises a chimney (1) and an anti-explosion cover plate (2), wherein a pressure relief opening (13) is formed in the chimney (1), and the anti-explosion cover plate (2) is arranged outside the pressure relief opening (13) and seals the pressure relief opening (13); the explosion-proof cover plate (2) seals the pressure relief opening (13) and has pretightening force; the explosion-proof cover plate (2) can overcome the pretightening force under the action of a certain force and is opened towards the outside of the pressure relief opening (13).
2. The chimney with the explosion-proof structure as claimed in claim 1, wherein: the chimney (1) have two, intake chimney (11) and exhaust chimney (12), the spatial structure between intake chimney (11) and exhaust chimney (12) is inside and outside double-deck distribution structure, pressure release mouth (13) face to the exhaust passage of exhaust chimney (12).
3. The chimney with the explosion-proof structure as claimed in claim 1, wherein: the device is characterized in that the number of the chimneys (1) is two, namely an air inlet chimney (11) and an exhaust chimney (12), the space distribution structure between the air inlet chimney (11) and the exhaust chimney (12) is an independent distribution structure, and the pressure relief opening (13) is formed in the exhaust chimney (12).
4. A chimney with an explosion-proof structure according to claim 2 or 3, characterized in that: the exhaust chimney (12) on be provided with gas vent (15), gas vent (15) with exhaust chimney (12) intercommunication, the open area of pressure release mouth (13) be greater than the open area of gas vent (15).
5. The chimney with the explosion-proof structure as claimed in claim 1, wherein: the chimney (1) is provided with a plurality of guide rods (5), the guide rods (5) are provided with compression springs (51), and the explosion-proof cover plate (2) provides pretightening force through the compression springs (51), so that the explosion-proof cover plate (2) is sealed in the pressure relief opening (13).
6. The chimney with the explosion-proof structure as claimed in claim 1, wherein: the anti-explosion cover plate (2) is provided with a gravity block (21), and the pre-tightening force is provided by the gravity of the gravity block (21), namely the anti-explosion cover plate (2) seals the pressure relief opening (13) under the action of the gravity block (21).
7. The chimney with the explosion-proof structure as claimed in claim 1, wherein: the anti-explosion cover plate (2) is installed on the chimney (1) through a hinge (3), a torsion spring (32) is arranged on the hinge (3), and the torsion spring (32) seals the anti-explosion cover plate (2) to the pressure relief opening (13) through pretightening force.
8. A gas fireplace which is characterized in that: a chimney comprising an explosion proof structure according to any one of claims 2 to 7.
9. A gas fireplace as claimed in claim 8, wherein: still include furnace (41), be provided with exhaust interface (42) and admit air interface (43) on furnace (41), exhaust interface (42) with exhaust chimney (12) are connected, admit air interface (43) with admit air interface (11) are connected, furnace (41) internal chamber except exhaust interface (42) and admit air interface (43) with the exterior space is isolated completely.
10. A gas fireplace as claimed in claim 9, wherein: the bottom of furnace (41) is provided with supplementary pressure release mouth (44), supplementary pressure release mouth (44) outside is provided with supplementary explosion-proof apron (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910385233.0A CN110822534A (en) | 2019-05-09 | 2019-05-09 | Chimney with explosion-proof structure and gas fireplace comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910385233.0A CN110822534A (en) | 2019-05-09 | 2019-05-09 | Chimney with explosion-proof structure and gas fireplace comprising same |
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|---|---|---|---|---|
| US5865165A (en) * | 1997-02-10 | 1999-02-02 | Brazier; Dennis | Gas fired fireplace boiler |
| US20040173203A1 (en) * | 2003-03-06 | 2004-09-09 | Henry Daniel S. | Pressure relief system for a gas fireplace |
| CN1888545A (en) * | 2006-07-21 | 2007-01-03 | 杨学凯 | Gas firing wall stove with balanced forced air exhausting system |
| KR20100011883U (en) * | 2009-05-28 | 2010-12-08 | 최환희 | Explosion prevention damper gear of skyscraper chimney |
| KR20130141113A (en) * | 2012-06-15 | 2013-12-26 | 문진석 | Apparatus for preventing explosion of firewood boiler |
| CN210118818U (en) * | 2019-05-09 | 2020-02-28 | 宁波丽辰电器有限公司 | Chimney with explosion-proof structure and gas fireplace comprising same |
-
2019
- 2019-05-09 CN CN201910385233.0A patent/CN110822534A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865165A (en) * | 1997-02-10 | 1999-02-02 | Brazier; Dennis | Gas fired fireplace boiler |
| US20040173203A1 (en) * | 2003-03-06 | 2004-09-09 | Henry Daniel S. | Pressure relief system for a gas fireplace |
| CN1888545A (en) * | 2006-07-21 | 2007-01-03 | 杨学凯 | Gas firing wall stove with balanced forced air exhausting system |
| KR20100011883U (en) * | 2009-05-28 | 2010-12-08 | 최환희 | Explosion prevention damper gear of skyscraper chimney |
| KR20130141113A (en) * | 2012-06-15 | 2013-12-26 | 문진석 | Apparatus for preventing explosion of firewood boiler |
| CN210118818U (en) * | 2019-05-09 | 2020-02-28 | 宁波丽辰电器有限公司 | Chimney with explosion-proof structure and gas fireplace comprising same |
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