CN212252586U - Gasification combustion hot water stove - Google Patents
Gasification combustion hot water stove Download PDFInfo
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- CN212252586U CN212252586U CN202020618539.4U CN202020618539U CN212252586U CN 212252586 U CN212252586 U CN 212252586U CN 202020618539 U CN202020618539 U CN 202020618539U CN 212252586 U CN212252586 U CN 212252586U
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Abstract
The utility model discloses a gasification combustion hot water stove belongs to combustion apparatus technical field, include: the coal gasification device comprises a coal gasification structure, a gas transmission structure and a heat insulation slag bearing structure, wherein the top and the bottom of the coal gasification structure are respectively provided with a feed inlet and a discharge outlet, the heat insulation slag bearing structure is arranged at the discharge outlet and is provided with a plurality of air distribution holes, and the gas transmission structure can transmit a mixture of atomized water and gasified air to the inside of the coal gasification structure through the air distribution holes; the combustion device is provided with a heat insulation combustion chamber, the top of the heat insulation combustion chamber is provided with a combustor, and the bottom of the heat insulation combustion chamber is provided with an over-fire air duct capable of conveying air into the heat insulation combustion chamber; and one end of the heat insulation conveying pipe is communicated with the drying pyrolysis layer, the other end of the heat insulation conveying pipe is communicated with the heat insulation combustion chamber, and the mixed gas after coal gasification can be conveyed to the combustor. The coal gasification device can ensure that the coal and the mixed gas after coal gasification are fully combusted, reduce the ignition loss of coal cinder and reduce the content of pollutants such as NOx in flue gas.
Description
Technical Field
The utility model relates to a combustion apparatus technical field especially relates to a gasification combustion hot water stove.
Background
The boiler is a heating device which is often used in daily life of people, and the main working principle is that heat energy released after fuel is combusted is transferred to water in a container to enable the water to reach the required temperature.
As an effective supplement to gas boilers and electric boilers, the clean coal environmental protection boiler still has good market prospect. The existing coal-fired boiler is generally a back-burning hot water boiler which comprises an upper hearth and a lower hearth which are separated by a fire grate, wherein coal which is not completely burnt in the upper hearth falls into the lower hearth through the fire grate to be continuously burnt, so that the coal has higher heat efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gasification combustion hot water stove to realize making the coal fully burn, reduce the ignition loss of cinder, reduce the content of pollutant in the burning tail gas moreover.
As the conception, the utility model adopts the technical proposal that:
a gasification combustion hot water stove comprising:
the coal gasification device comprises a coal gasification structure, a gas transmission structure and a heat insulation slag bearing structure, wherein the top and the bottom of the coal gasification structure are respectively provided with a feed inlet and a discharge outlet, a dry pyrolysis layer, a gasification layer and a combustion layer are sequentially arranged in the coal gasification structure from top to bottom, the heat insulation slag bearing structure is arranged at the discharge outlet, a plurality of air distribution holes are formed in the heat insulation slag bearing structure and can bear coal slag generated after coal gasification, and the gas transmission structure is configured to convey a mixture of atomized water and gasified air to the inside of the coal gasification structure through the air distribution holes;
the combustion device is provided with a heat insulation combustion chamber, the top of the heat insulation combustion chamber is provided with a combustor, and the bottom of the heat insulation combustion chamber is provided with an over-fire air pipe capable of conveying air into the heat insulation combustion chamber;
adiabatic conveyer pipe, one end communicate in dry pyrolysis layer, the other end communicate in adiabatic combustion chamber can carry the gas mixture after the coal gasification extremely the combustor.
Further, the gasification combustion hot water stove further comprises a slag storage structure and a slag pushing structure, the slag pushing structure is configured to be capable of pushing coal slag on the heat insulation slag bearing structure to a cavity of the slag storage structure at intervals of preset time, and the cavity is communicated with the discharge hole.
Further, the gasification combustion hot water stove still includes feeding storehouse and feed structure, the feeding storehouse communicates in the feed inlet, feed structure set up in the feed inlet, feed structure is configured to can carry the coal of predetermineeing the quality to at every turn in the coal gasification structure.
Further, the combustion device is also provided with a waste heat recovery chamber communicated with the heat insulation combustion chamber, and a plurality of heat exchange tubes are arranged in the waste heat recovery chamber.
Further, the waste heat recovery chamber includes a plurality of waste heat recovery locuses, and a plurality of waste heat recovery locuses communicate in proper order and form the snakelike passageway that supplies the flue gas to pass through.
Further, gasification combustion hot water stove still includes the draught fan, the draught fan set up in the exhaust port of waste heat recovery room, the draught fan configuration is so that the negative pressure is predetermine in the adiabatic combustion chamber formation.
Furthermore, the heat-insulation slag bearing structure is a heat-insulation air distribution plate, and a plurality of air distribution holes are formed in the heat-insulation air distribution plate.
Furthermore, the gas transmission structure comprises a gas transmission assembly and a gas transmission shell, wherein the gas transmission shell is connected to the heat-insulation air distribution plate, and a gasification air chamber for mixing atomized water and gasification air transmitted by the gas transmission assembly is formed between the gas transmission shell and the heat-insulation air distribution plate.
Further, the air delivery assembly comprises an air delivery pipeline, the aperture ratio of the heat-insulation air distribution plate is more than or equal to 40%, and the flow area of the heat-insulation air distribution plate is larger than the cross-sectional area of the air delivery pipeline.
Furthermore, a turbulent flow structure is arranged in the heat insulation combustion chamber.
The utility model has the advantages that:
the utility model provides a gasification combustion hot water stove, cinder are structural with atomized water and gasification wind contact and carry out burning once more and cooling in adiabatic bearing slag, can make the coal fully burn, improve the utilization ratio of coal, reduce the loss on ignition of cinder. And the mixed gas after coal gasification is directly conveyed into the heat-insulating combustion chamber through the heat-insulating conveying pipe for combustion, and secondary air and tertiary air are respectively conveyed through the combustor and the over-fire air pipe, so that the mixed gas after coal gasification can be fully combusted, and the content of pollutants such as NOx in the flue gas is reduced.
Drawings
Fig. 1 is a schematic view of a gasification combustion hot water stove according to the present invention.
In the figure:
10. a coal gasification unit; 20. a combustion device;
11. a coal gasification structure; 101. drying the pyrolysis layer; 102. a gasification layer; 103. a combustion layer; 12. a heat-insulating slag-bearing structure; 13. a gas delivery structure; 14. a feeding bin; 15. a feed structure; 16. a slag pushing structure; 17. a slag storage structure;
21. a heat-insulating combustion chamber; 22. a burner; 23. an over-fire air duct; 24. a waste heat recovery chamber; 241. waste heat recovery chamber division; 25. a heat exchange pipe;
3. a heat-insulating delivery pipe.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Fig. 1 is a schematic view of a gasification combustion hot water stove according to the present embodiment. As shown in fig. 1, the present embodiment provides a gasification combustion hot water boiler including a coal gasification device 10, a combustion device 20, and a heat insulation delivery pipe 3. The coal gasification device 10 comprises a coal gasification structure 11, a gas transmission structure 13 and a heat insulation slag bearing structure 12, wherein a feed inlet and a discharge outlet are respectively arranged at the top and the bottom of the coal gasification structure 11, and a dry pyrolysis layer 101, a gasification layer 102 and a combustion layer 103 are sequentially arranged in the coal gasification structure 11 from top to bottom. The heat insulation slag bearing structure 12 is arranged at the discharge port, and a plurality of air distribution holes are formed in the heat insulation slag bearing structure 12 and can bear coal slag generated after coal gasification. The gas conveying structure 13 can convey the mixture of atomized water and gasified air to the inside of the coal gasification structure 11 through a plurality of air distribution holes.
It is understood that coal enters the inside of the coal gasification structure 11 through the feed inlet, and mainly evaporation of moisture and precipitation of volatile matter are performed in the dry pyrolysis layer 101, and the further lower region is a gasification layer 102 where the devolatilized semicoke and the gas and steam rising from the combustion layer 103 undergo gasification reaction. Further, in the combustion layer 103, the gasified residual semicoke is burned and reacted with the supplied water vapor. Finally, the cinder falls on adiabatic bearing sediment structure 12, meets with the cinder with the mixture of the atomizing water that the wind distribution hole got into again and gasification wind, carries out the heat exchange, makes the cinder continue to burn here and cool off to make the cinder fully burn, reduce the loss on ignition of cinder. The coal gasification structure 11 and the coal gasification process are mature technologies in the prior art, and are not described herein again. It should be noted that the coal gasification structure 11 is also a heat insulation structure to prevent the temperature inside the coal gasification structure 11 from being dissipated outwards through the casing of the coal gasification structure.
The combustion apparatus 20 has a heat insulating combustion chamber 21, a burner 22 is provided at the top of the heat insulating combustion chamber 21, and an overfire air duct 23 capable of supplying air to the heat insulating combustion chamber 21 is provided at the bottom of the heat insulating combustion chamber 21. Both ends of the heat insulation conveying pipe 3 are connected to the heat insulation combustion chamber 21 and the coal gasification structure 11, respectively, and the heat insulation conveying pipe 3 is communicated with the dry pyrolysis layer 101, and can convey the mixed gas after coal gasification to the combustor 22. Through setting up conveyer pipe and combustion chamber respectively into adiabatic conveyer pipe 3 and adiabatic combustion chamber 21, can provide sufficient combustion temperature for the gas mixture after the coal gasification to the burning time of extension gas mixture, thereby make the gas mixture can the abundant burning, reduce the content of pollutants such as NOx in the flue gas.
Specifically, the atomized water absorbs heat and then becomes water vapor, the water vapor and air enter the combustion layer 103 after passing through the cinder to be burned out, the water vapor and the air are subjected to combustion and gasification reaction with the residual semicoke after combustion, then the water vapor is in contact with the red carbon in the gasification zone 102 and gasified to form gasified gases such as CO, H2 and CH4, the gasified gases upwards pass through the dry pyrolysis zone 101, and a low-temperature oxygen-deficient pyrolysis process is carried out by means of enthalpy heat of flue gas and sensible heat of the gasified gases and radiant heat of the red carbon layer, so that pyrolysis of fresh coal in the zone is promoted. The gas is then transported through the insulated duct 3 to the burner 22 in the insulated combustion chamber 21, and then ignited to be burned in the insulated combustion chamber 21 to heat the water to generate hot water, and air is transported through the overfire air duct 23 into the insulated combustion chamber 21, so that the coal gasification product can be sufficiently burned.
It can be understood that the gasification air delivered into the coal gasification structure 11 through the gas delivery structure 13 is equivalent to primary air, the air delivered through the burner 22 is equivalent to secondary air, and the air delivered through the over-fire air duct 23 is equivalent to tertiary air, so that products generated by coal gasification can be sufficiently combusted, and emission of pollutants such as NOx can be reduced.
The mixed gas after coal gasification may be ignited by an ignition structure provided integrally with the burner 22, or may be ignited by an ignition structure provided separately from the burner 22. Further, the present embodiment is not particularly limited to specific structures and types of the burner 22 and the ignition structure, as long as the above-described effects can be achieved. And the operating principles of the burner 22 and the ignition structure are prior art and will not be described in detail herein.
In addition, a turbulent flow structure is arranged in the heat insulation combustion chamber 21, so that a coal gasification product is subjected to turbulent flow combustion in the heat insulation combustion chamber 21, and the full combustion of the coal gasification product is facilitated. The above-mentioned turbulent flow structure may be a honeycomb structure, or may be formed by a plurality of baffle plates forming a serpentine channel, or may be other structures capable of realizing the turbulent flow effect, and this embodiment is not particularly limited.
The weight ratio of the water amount of the atomized water to the fuel amount in the gasification zone is more than 0.15 and less than 0.25, so as to improve the generation amount of the gasification gas such as CO, H2 and the like. In particular, when designing the coal gasification apparatus 10, it is necessary to ensure that the mixture of atomized water and air normally moves to the red char gasification zone and the gasified product normally moves to the adiabatic combustion chamber 21 according to parameters such as the negative pressure of the furnace, the wind pressure of the wind conveyed by the gas conveying structure 13, the resistance of the adiabatic slag bearing structure 12, and the resistance of the fuel deposited on the upper part.
Further, the gasification combustion hot water stove provided by the present embodiment further includes a feeding bin 14 and a feeding structure 15, wherein the feeding bin 14 is used for storing coal, and the feeding bin 14 is required to store fuel required by the coal gasification device 10 to operate at rated power for at least 12 hours. The feed hopper 14 is funnel-shaped to facilitate the flow and transport of the fuel. The feeding bin 14 is communicated with the feeding hole, the feeding structure 15 is arranged at the feeding hole, and the feeding structure 15 can convey coal with preset mass to the coal gasification structure 11 at each time. In order to realize quantitative feeding and prevent the reverse channeling or thermal explosion of the pyrolysis gasification gas, the feeding structure 15 adopts the existing spiral feeding structure, star-shaped feeding structure, material returning structure, etc.
Further, the heat insulation slag bearing structure 12 is a heat insulation air distribution plate, and a plurality of air distribution holes are formed in the heat insulation air distribution plate. In this embodiment, the air distribution holes are elliptical holes.
Further, the gas transmission structure 13 includes a gas transmission assembly and a gas transmission housing, the gas transmission housing is connected to the heat-insulating air distribution plate, and a gasification air chamber for mixing the atomized water and the gasification air is formed between the gas transmission housing and the heat-insulating air distribution plate. The gas transmission assembly comprises a blower, a gas transmission pipeline connected with the blower and an atomizing nozzle for transmitting atomized water to the gasification air chamber, and the air transmitted by the blower and the atomized water are mixed in the gasification air chamber and then enter the coal gasification structure 11 through the air distribution holes. Based on the principle of uniform air distribution and atomization, the aperture ratio of the heat-insulating air distribution plate is more than or equal to 40%, and the flow area is not less than the cross-sectional area of the air transmission pipeline.
Further, the gasification combustion hot water stove provided by the embodiment further includes a slag storage structure 17 and a slag pushing structure 16, the slag pushing structure 16 can push the cinder on the heat insulation slag bearing structure 12 into the cavity of the slag storage structure 17 at intervals of preset time, the cavity of the slag storage structure 17 is communicated with the discharge port, it can be understood that the slag storage structure 17, the heat insulation air distribution plate and the coal gasification structure 11 are enclosed together to form a closed cavity, the closed cavity is communicated with the feed bin 14 through the discharge port, and is communicated with the gasification air chamber through the air distribution hole. Specifically, the slag pushing structure 16 includes a slag pushing plate and a driving unit for driving the slag pushing plate to reciprocate, and the driving unit may be a piston type driving structure or the like. Preferably, the slag pushing plate is made of heat insulating materials. The pushing plate is driven to move at preset time intervals by the driving unit so as to push the cinder on the heat-insulating air distribution plate to the cavity of the cinder storage structure 17 for storage, and the cinder is prevented from being accumulated on the heat-insulating air distribution plate.
Furthermore, it should be noted that the heat-insulating bearing structure 12, i.e. the heat-insulating air distribution plate, is arranged obliquely so that the pushing plate can push the cinder into the cavity of the cinder holding structure 17. The inclination angle of the heat-insulating air distribution plate can be set according to actual needs.
Further, the gasification combustion hot water stove provided in the present embodiment further includes a waste heat recovery chamber 24 communicated with the adiabatic combustion chamber 21, and a plurality of heat exchange pipes 25 are disposed in the waste heat recovery chamber 24. Specifically, the waste heat recovery subchamber 24 comprises a plurality of waste heat recovery subchambers 241, and a plurality of heat exchange tubes 25 are arranged in each waste heat recovery subchamber 241. The plurality of waste heat recovery sub-chambers 241 are sequentially communicated to form a serpentine channel for the flue gas to pass through, so that the residence time of the flue gas in the waste heat recovery chamber 24 is prolonged, and the heat exchange efficiency is improved.
In this embodiment, the heat exchange tube 25 is a water tube, and a plurality of water tubes are arranged in a transverse array. In order to further improve the heat exchange efficiency, in the present embodiment, each sidewall of the waste heat recovery chamber 24 and the partition plate partitioning the waste heat recovery chamber 24 into the plurality of waste heat recovery subchambers 241 are both of a water jacket structure. In other embodiments, the heat exchange tube 25 may be a fire tube, and a plurality of fire tubes are vertically arranged, that is, the waste heat recovery chamber 24 is internally provided with water and flue gas flows through the fire tubes. In practical application, the number of the heat exchange tubes 25 can be set according to the high-temperature flue gas amount and the flue gas enthalpy value so as to ensure that the temperature of the flue gas discharged from the exhaust port of the waste heat recovery chamber 24 is less than 170 ℃.
The gasification combustion hot water stove that this embodiment provided still includes the draught fan, and the draught fan sets up in waste heat recovery chamber 24's exhaust port for form in the adiabatic combustion chamber 21 and predetermine the negative pressure, thereby make the product after the coal gasification can enter into adiabatic combustion chamber 21 by adiabatic conveyer pipe 3 in, and make the flue gas get into in the waste heat recovery chamber 24 and carry out the heat transfer with heat exchange tube 25, later by the exhaust port discharge.
The gasification combustion hot water stove provided by the embodiment realizes efficient gasification combustion through air quantity allocation, steam proportion, quantitative feeding and timed slag pushing. Specifically, in the present embodiment, the ratio of the gasified air (primary air) provided by the air delivery assembly, the air (secondary air) provided by the burner 22, and the air (tertiary air) provided by the over-fire air duct 23 is generally 20 to 30: 40-60:10-30, the proportion is adjusted according to the type or kind of coal. The addition amount of the water vapor accounts for 15 to 25 percent of the raw material coal. The temperature inside the coal gasification structure 11 is controlled to be less than 1000 ℃. The preset quality and the preset time are set according to actual needs and are matched with the heat supply and air distribution of the gasification combustion hot water stove.
In summary, in the gasification combustion hot water stove provided in this embodiment, the cinder is contacted with the atomized water and the gasification air on the heat insulation cinder bearing structure 12 to be re-combusted and cooled, so that the coal can be sufficiently combusted, the utilization rate of the coal is improved, and the loss of the cinder is reduced. And the mixed gas after coal gasification is directly conveyed into the heat insulation combustion chamber 21 through the heat insulation conveying pipe 3 for combustion, and secondary air and tertiary air are respectively conveyed through the combustor 22 and the over-fire air pipe 23, so that the mixed gas after coal gasification can be fully combusted, and the content of pollutants such as NOx in smoke is reduced. The automation degree of the gasification combustion hot water stove can be improved by quantitative feeding and periodic slag pushing, so that the addition amount of coal and the slag pushing amount of the slag pushing plate form a certain proportion to control the pyrolysis of fuel, avoid centralized pyrolysis, improve the stability of heat supply amount and reduce the emission of pollutants; and utilize pushing away the automatic cavity that pushes away the material sediment in sediment structure 17 of sediment board and keep in, regularly to the sediment clearance in the cavity in sediment structure 17 in the sediment can, reduced the sediment clearance number of times.
The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A gasification combustion hot water stove, comprising:
the coal gasification device (10) comprises a coal gasification structure (11), a gas transmission structure (13) and a heat insulation slag bearing structure (12), wherein a feed inlet and a discharge outlet are respectively formed in the top and the bottom of the coal gasification structure (11), a drying pyrolysis layer (101), a gasification layer (102) and a combustion layer (103) are sequentially arranged in the coal gasification structure (11) from top to bottom, the heat insulation slag bearing structure (12) is arranged at the discharge outlet, a plurality of air distribution holes are formed in the heat insulation slag bearing structure (12) and can be used for bearing coal slag generated after coal gasification, and the gas transmission structure (13) is configured to be capable of conveying a mixture of atomized water and gasified air to the inside of the coal gasification structure (11) through the air distribution holes;
the combustion device (20) is provided with a heat insulation combustion chamber (21), the top of the heat insulation combustion chamber (21) is provided with a combustor (22), and the bottom of the heat insulation combustion chamber is provided with an over-fire air duct (23) capable of conveying air into the heat insulation combustion chamber (21);
and the heat insulation conveying pipe (3) is communicated with the dry pyrolysis layer (101) at one end, is communicated with the heat insulation combustion chamber (21) at the other end, and can convey the mixed gas after coal gasification to the combustor (22).
2. A gas-fired hot water stove according to claim 1, characterized in that the gas-fired hot water stove further comprises a slag storage structure (17) and a slag pushing structure (16), the slag pushing structure (16) is configured to push the cinder on the heat insulating slag bearing structure (12) into a chamber of the slag storage structure (17) at intervals of a preset time, and the chamber is communicated with the discharge hole.
3. A gasification combustion hot water stove according to claim 2, characterized in that the gasification combustion hot water stove further comprises a feeding bin (14) and a feeding structure (15), the feeding bin (14) communicating with a feeding inlet, the feeding structure (15) being provided at the feeding inlet, the feeding structure (15) being configured to be able to deliver a preset mass of coal into the coal gasification structure (11) at a time.
4. A gas-fired hot water stove as claimed in claim 1, characterized in that the combustion device (20) further has a waste heat recovery chamber (24) communicating with the adiabatic combustion chamber (21), a plurality of heat exchange tubes (25) being provided in the waste heat recovery chamber (24).
5. A gas-fired hot water stove as claimed in claim 4 wherein the waste heat recovery chamber (24) comprises a plurality of waste heat recovery subchambers (241), the plurality of waste heat recovery subchambers (241) being in series connected to form a serpentine path for the flue gas to pass through.
6. The gasification combustion hot water stove according to claim 4, further comprising an induced draft fan, the induced draft fan being disposed at the smoke exhaust port of the waste heat recovery chamber (24), the induced draft fan being configured so that a preset negative pressure is formed in the adiabatic combustion chamber (21).
7. A gas-fired hot water stove according to claim 1, wherein the heat insulating slag bearing structure (12) is a heat insulating air distribution plate provided with a plurality of air distribution holes.
8. A gas-fired hot water stove as claimed in claim 7, characterized in that the gas delivery structure (13) comprises a gas delivery assembly and a gas delivery housing, the gas delivery housing being connected to the heat insulating air distribution plate and forming a gas delivery air chamber between the gas delivery assembly and the heat insulating air distribution plate for mixing atomized water delivered by the gas delivery assembly with the gas delivery air.
9. The gasification combustion hot water furnace as claimed in claim 8, wherein the gas delivery unit comprises a gas delivery pipe, the insulating air distribution plate has an opening ratio of 40% or more, and the flow area of the insulating air distribution plate is larger than the cross-sectional area of the gas delivery pipe.
10. A gas-fired hot water stove according to claim 1, characterized in that a flow disturbing structure is provided in the heat insulating combustion chamber (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020618539.4U CN212252586U (en) | 2020-04-22 | 2020-04-22 | Gasification combustion hot water stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020618539.4U CN212252586U (en) | 2020-04-22 | 2020-04-22 | Gasification combustion hot water stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212252586U true CN212252586U (en) | 2020-12-29 |
Family
ID=74003448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020618539.4U Expired - Fee Related CN212252586U (en) | 2020-04-22 | 2020-04-22 | Gasification combustion hot water stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212252586U (en) |
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2020
- 2020-04-22 CN CN202020618539.4U patent/CN212252586U/en not_active Expired - Fee Related
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Granted publication date: 20201229 |