CN201672668U - Energy-saving hot-blast furnace - Google Patents
Energy-saving hot-blast furnace Download PDFInfo
- Publication number
- CN201672668U CN201672668U CN2010202263545U CN201020226354U CN201672668U CN 201672668 U CN201672668 U CN 201672668U CN 2010202263545 U CN2010202263545 U CN 2010202263545U CN 201020226354 U CN201020226354 U CN 201020226354U CN 201672668 U CN201672668 U CN 201672668U
- Authority
- CN
- China
- Prior art keywords
- air
- hot blast
- chamber
- heater
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Air Supply (AREA)
Abstract
The utility model discloses an energy-saving hot-blast furnace, which comprises a furnace body, wherein a furnace hearth and an air heat exchanger communicated with the furnace hearth are arranged in the furnace body, a row of upper furnace grates and a row of lower furnace grates are arranged in the furnace hearth, the furnace hearth is divided into an upper combustion chamber and a lower combustion chamber through the row of the upper furnace grates and the row of the lower furnace grates, a coal filling opening is correspondingly arranged on each combustion chamber, coal which is not sufficiently combusted falls down into the lower combustion chamber for carrying out secondary combustion, and the coal utilization rate is fundamentally improved.
Description
Technical field
The utility model relates to a kind of hot-blast stove that is used for warmhouse booth, the warming usefulness of pouity dwelling place, particularly a kind ofly full combustion of fuel and that can be carried out thermoregulator energy-saving hot blast furnace, is the improvement to the hot-blast stove structure in existing warmhouse booth, the pouity dwelling place.
Background technology
At present, be used for hot-blast stove simple in structure of warmhouse booth, the warming usefulness of pouity dwelling place, only have a burner hearth, fired coal combustion is insufficient, waste more serious, and this hot-blast stove function singleness, temperature can not be regulated, and the needs of inapplicable plantation peasant household and raising peasant household.
The utility model content
Problem to be solved in the utility model provides a kind of good energy-conserving effect, thermal efficiency utilization rate is high and can regulate the energy-saving hot blast furnace of controlling hot blast temperature.
For addressing the above problem, the technical scheme that the utility model adopted is:
A kind of energy-saving hot blast furnace, comprise body of heater, the air heat-exchanging device that is provided with burner hearth in the body of heater and is communicated with burner hearth, it is characterized in that: be provided with upper and lower two grate furnaces row in the described burner hearth, upper and lower two grate furnaces row is separated into upper and lower two combustion chambers with burner hearth, and correspondence is provided with a coal-filling hole on each combustion chamber.
Below be the utility model for further improvement of these options:
Described air heat-exchanging device comprises an air heat exchanger that is communicated with burner hearth, in body of heater, be provided with inlet air plenum and hot blast chamber, inlet air plenum is provided with air inlet, the hot blast chamber is provided with hot-blast outlet, described inlet air plenum and hot blast chamber are communicated with air heat exchanger respectively, and described air heat exchanger is provided with pipe.
Further improve:
Described air heat exchanger comprises an airtight casing, and described casing comprises upper perforated plate and lower perforated plate, is provided with some heat exchanger tubes between described upper perforated plate and the lower perforated plate, is Heat Room between the heat exchanger tube.
Further improve:
Being provided with two ipper air chamber's dividing plates between the last shell wall of described upper perforated plate and body of heater, is the ipper air chamber that is communicated with Heat Room between described two ipper air chamber's dividing plates.
Further improve:
Be provided with lower air chamber that is communicated with inlet air plenum and the backhaul air compartment that is communicated with Heat Room between the following shell wall of described lower perforated plate and body of heater, be provided with lower air chamber's dividing plate between described backhaul air compartment and the lower air chamber.
Cold air enters into inlet air plenum from air inlet, enter lower air chamber then, pass the air heat exchanger tube and enter ipper air chamber, and then oppositely pass the air heat exchanger tube and enter the backhaul air compartment, oppositely pass the air heat exchanger tube again and enter the air heat exchanger tube, enter in warmhouse booth or the pouity dwelling place from hot-blast outlet at last, cold air flows through three backhauls, increase the heat exchange process of cold air, improved heat exchange efficiency.
The another kind of improvement: be provided with flame retardant coating around the described burner hearth, the flame retardant coating of close casing one side is provided with the Heat Room connected entrance, vertically is provided with some roads dividing plate in the described casing, and some roads dividing plate is crisscross arranged.
It is indoor that hot blast in the burner hearth enters into hot blast through the Heat Room connected entrance, because some roads dividing plate is crisscross arranged, makes hot blast flow in the indoor complications of hot blast, and the flow process of the hot blast of prolongation has improved heat exchange efficiency.
The another kind of improvement: the top of described burner hearth is provided with a cooling pipe, and it is indoor that described cooling pipe is positioned at hot blast, and a wherein end of cooling pipe is communicated with the hot blast chamber, and the other end reaches the outside of body of heater.
The pipe of lowering the temperature at ordinary times is in closed condition, and is too high when the temperature that hot blast is indoor, when needing cooling, the cooling pipe can be opened, allow cold air enter into by the cooling pipe that hot blast is indoor to cross with hot blast, reduced the temperature of hot blast, regulated the temperature in warmhouse booth or the pouity dwelling place.
The another kind of improvement: a side of described body of heater is provided with secondary air inlet, and described secondary air inlet is communicated with inlet air plenum.
This pair air inlet can external wet curtain to lowering the temperature in the canopy and humidification.
The another kind of improvement: the both sides, front and back of described body of heater and the outside of an end are provided with shell body, have interlayer between described shell body and the body of heater, and this interlayer is communicated with respectively with inlet air plenum and hot blast chamber.
Further improve: be provided with upper spacer and lower clapboard in the interlayer, upper spacer and lower clapboard are separated into six air compartments with interlayer, and these six air compartments are communicated with successively.
The setting of interlayer, the heat that makes body of heater distribute to the outside has obtained recycling, has improved heat exchange efficiency, has saved the energy.
The utility model adopts such scheme, has the following advantages:
1, upper and lower two grate furnaces row is separated into upper and lower two combustion chambers with burner hearth, does not have clean-burning coal to drop in the upper combustion chamber and carries out second-time burning in the lower combustion chamber, has fundamentally improved coal utilizaton rate;
2, can effectively control the bound temperature, when temperature of shed reaches standard, only just can effectively control the rising of fire box temperature with lower combustion chamber;
3, heat exchanger tube is erect and is arranged, and dust falls automatically, and effectively control is to the pollution of environment and the number of times of deashing;
4, roof of the furnace is provided with the cooling pipe, effectively controls the temperature of air outlet;
5, a side of described body of heater is provided with secondary air inlet, and described secondary air inlet is communicated with inlet air plenum, this pair air inlet can external wet curtain to lowering the temperature in the canopy and humidification.
The utility model adopts such scheme, can be with full combustion of fuel, and good energy-conserving effect adds interlayer by the outside at body of heater, can improve the thermal efficiency, and temperature can be regulated the needs that are highly suitable for planting peasant household and raise peasant household.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Accompanying drawing 1 is the structural representation of hot-blast stove among the utility model embodiment;
Accompanying drawing 2 is that A-A in the accompanying drawing 1 is to cutaway view;
Accompanying drawing 3 is that B-B in the accompanying drawing 2 is to cutaway view;
Accompanying drawing 4 is that C-C in the accompanying drawing 3 is to cutaway view.
Among the figure: the 1-body of heater; The 2-burner hearth; The 3-inlet air plenum; The 4-pipe; The 5-air inlet; The 6-upper perforated plate; 7-ipper air chamber dividing plate; 8-ipper air chamber; 9-backhaul air compartment; The 10-hot-blast outlet; 11-hot blast chamber; The 12-heat-insulation layer; 13-lower air chamber; The 14-Heat Room; 15-air heat exchanger tube; The 16-upper fire-grating; The last coal-filling hole of 17-; 18-lower filling coal mouth; The 19-mouth of scratching in the ashes; The 20-lower fire grating; The 21-flame retardant coating; 22,23-side cleaning door; 24-Heat Room connected entrance; The 25-shell body; 26-air compartment connected entrance; The 27-lower clapboard; The 28-upper spacer; 29,38-connected entrance; 30,35-wind-guiding bent plate; 31-the 6th crosswind chamber; The 32-first crosswind chamber; The secondary air inlet of 33-; The 34-valve plate; 36-the 3rd crosswind chamber; The 37-pipe of lowering the temperature; 39-the 4th crosswind chamber; 40-the 5th crosswind chamber; The 41-second crosswind chamber; 42-first dividing plate; The 43-second partition; The 44-lower perforated plate; 45-lower air chamber dividing plate; The 46-air blast.
The specific embodiment
Embodiment, as shown in Figure 1, a kind of energy-saving hot blast furnace, comprise body of heater 1, the air heat-exchanging device that is provided with burner hearth 2 in the body of heater 1 and is communicated with burner hearth 2, the shell wall outside of body of heater 1 is provided with heat-insulation layer 12, be provided with upper fire-grating 16 and lower fire grating 20 in the described burner hearth 2, upper fire-grating 16 and lower fire grating 20 are separated into burner hearth 2, following two combustion chambers, upper combustion chamber's correspondence is provided with one and goes up coal-filling hole 17, and lower combustion chamber's correspondence is provided with a lower filling coal mouth 18, and the below of described lower filling coal mouth 18 is provided with the mouth 19 of scratching in the ashes, do not have clean-burning coal to drop in the upper combustion chamber and carry out second-time burning in the lower combustion chamber, fundamentally improved coal utilizaton rate.
Described air heat-exchanging device comprises an air heat exchanger that is communicated with burner hearth 2, is provided with inlet air plenum 3 and hot blast chamber 11 in body of heater 1, and inlet air plenum 3 is provided with air inlet 5, and air blast 46 is installed on air inlet 5,
Described air heat exchanger comprises an airtight casing, described casing comprises upper perforated plate 6 and lower perforated plate 44, be provided with some air heat exchanger tubes 15 between described upper perforated plate 6 and the lower perforated plate 44, it between the air heat exchanger tube 15 Heat Room 14, be provided with two ipper air chamber's dividing plates 7 between the last shell wall of described upper perforated plate 6 and body of heater 1, be the ipper air chamber 8 that is communicated with Heat Room 14 between described two ipper air chamber's dividing plates 7, be provided with lower air chamber 13 that is communicated with inlet air plenum 3 and the backhaul air compartment 9 that is communicated with Heat Room 14 between the following shell wall of described lower perforated plate 44 and body of heater 1, be provided with lower air chamber's dividing plate 45 between described backhaul air compartment 9 and the lower air chamber 13, described backhaul air compartment 9 is communicated with hot blast chamber 11, be provided with hot-blast outlet 10 on hot blast chamber 11, described air heat exchanger is provided with pipe 4.
Cold air enters into inlet air plenum 3 from air inlet 5, enter lower air chamber 13 then, pass air heat exchanger tube 15 and enter ipper air chamber 8, and then oppositely pass air heat exchanger tube 15 and enter backhaul air compartment 9, oppositely pass air heat exchanger tube 15 again and enter hot blast chamber 11, enter in warmhouse booth or the pouity dwelling place from hot-blast outlet 10 at last, cold air flows through three backhauls, increase the heat exchange process of cold air, improved heat exchange efficiency.
The top of described burner hearth 2 is provided with a cooling pipe 37, and described cooling pipe 37 is positioned at hot blast chamber 11, and a wherein end of cooling pipe 37 is communicated with hot blast chamber 14, and the other end reaches the outside of body of heater 1.
The pipe of lowering the temperature at ordinary times is in closed condition, and is too high when the temperature that hot blast is indoor, when needing cooling, the cooling pipe can be opened, allow cold air enter into by the cooling pipe that hot blast is indoor to cross with hot blast, reduced the temperature of hot blast, regulated the temperature in warmhouse booth or the pouity dwelling place.
As shown in Figure 2, be provided with flame retardant coating 21 around the described burner hearth 2, flame retardant coating 21 near casing one side is provided with Heat Room connected entrance 24, vertically be provided with first dividing plate 42 and second partition 43, the first dividing plates 42 and second partition 43 in the described casing and be crisscross arranged, the hot blast in the burner hearth enters in the hot blast chamber 14 through Heat Room connected entrance 24, because first dividing plate 42 and second partition 43 are crisscross arranged, make that 14 introversion bafflings move hot blast in the hot blast chamber, the flow process that has prolonged hot blast has improved heat exchange efficiency.
The both sides, bottom of described body of heater 1 are respectively equipped with side cleaning door 22 and side cleaning door 23, and described side cleaning door 22 and side cleaning door 23 are communicated with lower air chamber 13 and backhaul air compartment 9 respectively.
As shown in Figure 3, Figure 4, one side of described body of heater 1 is provided with secondary air inlet 33, described secondary air inlet 33 is communicated with inlet air plenum 3, side near secondary air inlet 33 in inlet air plenum 3 is provided with valve plate 34, the shell wall of the upper end of described valve plate 34 and body of heater 1 is rotationally connected, and has prevented the air reverse flow in the inlet air plenum, and the upper side position that is positioned at valve plate 34 in inlet air plenum 3 is provided with wind-guiding bent plate 35, the upper end sealing of described wind-guiding bent plate 35 forms air inlet between the shell wall of lower end and body of heater 1.
The both sides, front and back of described body of heater 1 and the outside of an end are provided with shell body 25, has interlayer between described shell body 25 and the body of heater 1, be provided with upper spacer 28 and lower clapboard 27 in the interlayer, upper spacer 28 and lower clapboard 27 are separated into the first crosswind chamber 32 with interlayer, the second crosswind chamber 41, the 3rd crosswind chamber 36, the 4th crosswind chamber 39, the 5th crosswind chamber 40 and the 6th crosswind chamber 31, the first crosswind chamber 32 is communicated with inlet air plenum 3 by air compartment connected entrance 26, these six air compartments are communicated with successively, on lower clapboard 27, be provided with connected entrance 38, described connected entrance 38 is with the 3rd crosswind chamber 36, the 4th crosswind chamber 39 is communicated with, on upper spacer 28, be provided with connected entrance 29, this connected entrance 29 is communicated with hot blast chamber 11, is provided with wind-guiding bent plate 30 at the upside of connected entrance 29.
The setting of interlayer, the heat that makes body of heater distribute to the outside has obtained recycling, has improved heat exchange efficiency, has saved the energy.
Claims (10)
1. energy-saving hot blast furnace, comprise body of heater (1), the air heat-exchanging device that is provided with burner hearth (2) in the body of heater (1) and is communicated with burner hearth (2), it is characterized in that: be provided with upper and lower two grate furnaces row in the described burner hearth (2), upper and lower two grate furnaces row is separated into upper and lower two combustion chambers with burner hearth (2), and correspondence is provided with a coal-filling hole on each combustion chamber.
2. a kind of energy-saving hot blast furnace as claimed in claim 1, it is characterized in that: described air heat-exchanging device comprises an air heat exchanger that is communicated with burner hearth (2), in body of heater (1), be provided with inlet air plenum (3) and hot blast chamber (11), inlet air plenum (3) is provided with air inlet (5), hot blast chamber (11) is provided with hot-blast outlet (10), described inlet air plenum (3) and hot blast chamber (11) are communicated with air heat exchanger respectively, and described air heat exchanger is provided with pipe (4).
3. a kind of energy-saving hot blast furnace as claimed in claim 2, it is characterized in that: described air heat exchanger comprises an airtight casing, described casing comprises upper perforated plate (6) and lower perforated plate (44), being provided with some heat exchanger tubes (15) between described upper perforated plate (6) and the lower perforated plate (44), is Heat Room (14) between the heat exchanger tube (15).
4. a kind of energy-saving hot blast furnace as claimed in claim 3, it is characterized in that: being provided with two ipper air chamber's dividing plates (7) between the last shell wall of described upper perforated plate (6) and body of heater (1), is the ipper air chamber (8) that is communicated with Heat Room (14) between described two ipper air chamber's dividing plates (7).
5. a kind of energy-saving hot blast furnace as claimed in claim 4 is characterized in that: be provided with lower air chamber (13) and and the Heat Room that is communicated with inlet air plenum (3) between the following shell wall of described lower perforated plate (44) and body of heater (1)
(14) the backhaul air compartment (9) of Lian Tonging is provided with lower air chamber's dividing plate (45) between described backhaul air compartment (9) and the lower air chamber (13).
6. a kind of energy-saving hot blast furnace as claimed in claim 3, it is characterized in that: be provided with flame retardant coating (21) around the described burner hearth (2), flame retardant coating (21) near casing one side is provided with Heat Room connected entrance (24), vertically is provided with some roads dividing plate in the described casing, and some roads dividing plate is crisscross arranged.
7. a kind of energy-saving hot blast furnace as claimed in claim 3, it is characterized in that: the top of described burner hearth (2) is provided with a cooling pipe (37), described cooling pipe (37) is positioned at hot blast chamber (11), a wherein end of cooling pipe (37) is communicated with hot blast chamber (14), and the other end reaches the outside of body of heater (1).
8. a kind of energy-saving hot blast furnace as claimed in claim 3 is characterized in that: a side of described body of heater (1) is provided with secondary air inlet (33), and described secondary air inlet (33) is communicated with inlet air plenum (3).
9. a kind of energy-saving hot blast furnace as claimed in claim 3, it is characterized in that: the both sides, front and back of described body of heater (1) and the outside of an end are provided with shell body (25), have interlayer between described shell body (25) and the body of heater (1), this interlayer is communicated with respectively with inlet air plenum (3) and hot blast chamber (11).
10. a kind of energy-saving hot blast furnace as claimed in claim 9 is characterized in that: be provided with upper spacer (28) and lower clapboard (27) in the interlayer, upper spacer (28) and lower clapboard (27) are separated into six air compartments with interlayer, and these six air compartments are communicated with successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202263545U CN201672668U (en) | 2010-06-17 | 2010-06-17 | Energy-saving hot-blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202263545U CN201672668U (en) | 2010-06-17 | 2010-06-17 | Energy-saving hot-blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201672668U true CN201672668U (en) | 2010-12-15 |
Family
ID=43330080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202263545U Expired - Fee Related CN201672668U (en) | 2010-06-17 | 2010-06-17 | Energy-saving hot-blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201672668U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589274A (en) * | 2012-03-12 | 2012-07-18 | 铁岭市清河区金锋干燥设备有限公司 | Air heating furnace specially used for drying cotton |
| CN102778028A (en) * | 2012-07-05 | 2012-11-14 | 怀远县巨龙机械制造有限公司 | Efficient hot air furnace |
| CN102944062A (en) * | 2012-11-08 | 2013-02-27 | 高建康 | Hot air heating furnace |
| CN103088744A (en) * | 2013-03-01 | 2013-05-08 | 长治县玉通机械设备有限公司 | Hot-blast stove |
| CN103542518A (en) * | 2013-10-16 | 2014-01-29 | 高海华 | Biomass double-heat-exchange reversal burning type hot-air furnace |
| CN103615803A (en) * | 2013-11-28 | 2014-03-05 | 王维国 | Efficient hot-blast stove |
| CN104061678A (en) * | 2014-07-20 | 2014-09-24 | 泉州恒灼热力机械科技有限公司 | Multi-tube high-temperature hot blast stove with heart-shaped heat exchange tubes |
| CN105180429A (en) * | 2015-09-21 | 2015-12-23 | 济南大学 | Novel practical and efficient hot blaster heater |
| CN105546814A (en) * | 2015-08-19 | 2016-05-04 | 扬州岱发环保科技有限公司 | Novel furnace core of hot air furnace |
| CN106801994A (en) * | 2017-03-27 | 2017-06-06 | 魏景锋 | Hot-blast stove and heating |
-
2010
- 2010-06-17 CN CN2010202263545U patent/CN201672668U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589274A (en) * | 2012-03-12 | 2012-07-18 | 铁岭市清河区金锋干燥设备有限公司 | Air heating furnace specially used for drying cotton |
| CN102778028A (en) * | 2012-07-05 | 2012-11-14 | 怀远县巨龙机械制造有限公司 | Efficient hot air furnace |
| CN102944062A (en) * | 2012-11-08 | 2013-02-27 | 高建康 | Hot air heating furnace |
| CN103088744A (en) * | 2013-03-01 | 2013-05-08 | 长治县玉通机械设备有限公司 | Hot-blast stove |
| CN103542518B (en) * | 2013-10-16 | 2016-08-10 | 高海华 | Biomass double-heat-exchangereversal reversal burning type hot-air furnace |
| CN103542518A (en) * | 2013-10-16 | 2014-01-29 | 高海华 | Biomass double-heat-exchange reversal burning type hot-air furnace |
| CN103615803A (en) * | 2013-11-28 | 2014-03-05 | 王维国 | Efficient hot-blast stove |
| CN103615803B (en) * | 2013-11-28 | 2016-08-31 | 王维国 | High-efficient hot air furnace |
| CN104061678A (en) * | 2014-07-20 | 2014-09-24 | 泉州恒灼热力机械科技有限公司 | Multi-tube high-temperature hot blast stove with heart-shaped heat exchange tubes |
| CN104061678B (en) * | 2014-07-20 | 2016-08-24 | 泉州恒灼热力机械科技有限公司 | Heart-shaped heat exchanger tube multitube high temperature hot-blast furnace |
| CN105546814A (en) * | 2015-08-19 | 2016-05-04 | 扬州岱发环保科技有限公司 | Novel furnace core of hot air furnace |
| CN105546814B (en) * | 2015-08-19 | 2019-02-26 | 扬州岱发环保科技有限公司 | A kind of New-type hot-air furnace furnace core |
| CN105180429A (en) * | 2015-09-21 | 2015-12-23 | 济南大学 | Novel practical and efficient hot blaster heater |
| CN105180429B (en) * | 2015-09-21 | 2017-12-19 | 济南大学 | A kind of hot-blast stove |
| CN106801994A (en) * | 2017-03-27 | 2017-06-06 | 魏景锋 | Hot-blast stove and heating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201672668U (en) | Energy-saving hot-blast furnace | |
| CN201203263Y (en) | Tube arranging type hot-air stove | |
| CN2835884Y (en) | Hot blast heating boiler with biomass briquette fuel | |
| CN203136999U (en) | Control system for airflow alternating horizontal type bulk flue-cured tobacco barn | |
| CN201715495U (en) | Vertical type biquadratic back burning furnace | |
| CN103017328A (en) | Combustion and heat exchange system of heating equipment | |
| CN104964312A (en) | Regenerative energy-saving gas cooker | |
| CN201748531U (en) | Warm-air heating system | |
| CN203384960U (en) | Environment-friendly boiler with energy gathering and heat exchange functions | |
| CN206695529U (en) | Low temperature agricultural byproducts drying machine | |
| CN104279548A (en) | Energy-collecting heat exchange environment-friendly boiler | |
| CN207831335U (en) | A kind of hearth particle of high thermal efficiency | |
| RU123116U1 (en) | HEATING DEVICE (OPTIONS) | |
| CN202281375U (en) | Hot blast stove with return and surround heat exchange | |
| CN207487139U (en) | A kind of new and effective biologic matter particle fuel hot-air stove | |
| CN207922290U (en) | A kind of biomass fuel warming stove | |
| CN207797387U (en) | Spin upside down formula domestic heating boiler | |
| CN201053700Y (en) | Domestic air heating stove | |
| CN101871641B (en) | Vertical quartic reverse-burning boiler | |
| CN104848201A (en) | Multifunctional horizontal water heating stove | |
| CN1963358A (en) | Hot-blast stove | |
| CN204648207U (en) | Multipurpose horizontal heating furnace | |
| CN204902239U (en) | Hot -blast furnace is imitated to high fever | |
| CN215412118U (en) | Hot air heating stove | |
| CN208595557U (en) | A kind of heat exchange structure of biomass real flame fireplace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20150617 |
|
| EXPY | Termination of patent right or utility model |