CN2929561Y - Vertical smoke clearing dust-removing energy saving boiler - Google Patents
Vertical smoke clearing dust-removing energy saving boiler Download PDFInfo
- Publication number
- CN2929561Y CN2929561Y CN 200620117601 CN200620117601U CN2929561Y CN 2929561 Y CN2929561 Y CN 2929561Y CN 200620117601 CN200620117601 CN 200620117601 CN 200620117601 U CN200620117601 U CN 200620117601U CN 2929561 Y CN2929561 Y CN 2929561Y
- Authority
- CN
- China
- Prior art keywords
- boiler
- water tank
- heater
- vertical
- flue
- 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
- Chimneys And Flues (AREA)
Abstract
The utility model discloses an upright smoke prevention and dust control boiler which is an upright boiler, comprising a boiler body, a boiler gate, a chimney and a water tank, wherein the boiler gate is equipped under the boiler body, the chimney is equipped on top of the boiler body, the water tank is equipped inside the boiler body, multiple layers of temperature increasing calandrias are equipped above the boiler gate, hang springs are equipped inside the calandrias, filtering silk-screen is distributed between the last two calandrias, a pre heating expansion tank is equipped on the gate of the chimney on top of the boiler body. The utility model fully employs heat in the boiler chamber to increase the heat efficiency of the boiler. On the process of the fuel burning on the boiler, refractory ceramics and furnace wires inside them become hot and red as temperature-increasing calandrias, which makes the unburned coal powder fully burned and the dust quantity decreased greatly, and a alloying sand net can control the occurrence and overflowing of the flue dust.
Description
Technical field
The utility model relates to a kind of vertical smoke abatement and dust control power economized boiler.
Background technology
The energy-saving design scheme of the smoke abatement and dust control of boiler is a lot of at present, but generally all carries out at Industrial Boiler.For boiler for domestic, smoke abatement and dust control and energy-conservation design remain an important field.In China, from south to north, countless boiler for domestic is arranged.How can solve the smoke abatement and dust control problem and the power saving of boiler for domestic effectively, to improve the ecological environment and sustainable development all be significant.And design energy-saving boiler for domestic, can the amount of being sparing in the use of coal also well imagine every year.There are not environmental protection and energy saving design or the unfavorable actual state of its energy-saving effect at present boiler for domestic, overcome existing boiler for domestic smoke abatement and dust control and the low design defect of energy-saving efficiency, design the new design of the boiler for domestic that a kind of cost is low, efficient is high, its economic implications and social effect are all huge especially.
The utility model content
The utility model technical issues that need to address just are to overcome existing boiler for domestic smoke abatement and dust control and the low defective of energy-saving efficiency, and a kind of vertical smoke abatement and dust control power economized boiler is provided, and its cost is low, has the high advantage of smoke abatement and dust control and energy-saving efficiency.
For addressing the above problem, the utility model adopts following technical scheme:
A kind of vertical smoke abatement and dust control power economized boiler of the utility model, it is a kind of vertical boiler, comprises body of heater, fire door, chimney and water tank, and fire door is installed in the body of heater bottom, chimney is installed in the body of heater top, water tank is installed in the body of heater, is provided with the temperature raising comb at bottom of furnace body, above being positioned at fire door, and the adjacent two layers comb is parallel to each other, in comb, be installed with hang spring, the hang spring two ends are fixed on the furnace wall, are furnished with the filtration silk screen between the most following two-layer comb, and the filter wire network edge is fixed on the furnace wall; Body of heater top chimney outlet is provided with the secondary water tank of preheating, and the water inlet of the secondary water tank of preheating is positioned at its underpart, and delivery port is positioned at its top, is communicated with water tank inlet through pipeline.
Temperature raising comb described in the utility model top vertically is placed with 3 and forms leg-of-mutton spiral type heated water pipe, every group of helix tube is made up of the 3-4 root helix tube of different tube diameters, and can select the group number of helix tube and the radical of every group of helix tube according to the size of boiler, every group of helix tube two ends communicate with the water tank sidewall.
Described temperature raising comb top is provided with steel pipe in the utility model body of heater, and described steel pipe is arranged alternately anyhow, and the steel pipe both sides are welded with the fin of downward-sloping 20 degree, and inboard wall of furnace body also is welded with the fin at downward-sloping 20 degree angles.
The many group fanning strip of the fin of the utility model inboard wall of furnace body on the body of heater horizontal cross-section, arranging, its arc part is positioned at the center of body of heater, its root weld is on the sidewall of water tank, and the angle of its sector and horizontal plane and the angle between vertical plane all are not more than 45 degree.
The secondary water tank of preheating described in the utility model is square, the secondary water tank of preheating has flue and smoke exhaust pipe, the flue middle part is welded with protuberance the bottom of a pan shape shield down, every group of smoke exhaust pipe is that " C " shape pipe of 12 length alternations of 1/12nd of chimney diameter constitutes by diameter, and its upper and lower opening lays respectively at the top and the bottom of shield and communicates with flue.
The secondary water tank of preheating described in the utility model is provided with vent valve, and water tank upper is provided with safety valve and Pressure gauge, water level meter and thermometer.
Temperature raising comb described in the utility model is the high temperature porcelain tube, and hang spring adopts electric furnace heating wire, and screen pack is the alloy sand net.
The utility model makes full use of the thermal efficiency of the heat raising boiler of burner hearth.In boiler oil burning, redden as the high temperature porcelain tube heating of temperature raising comb, unburned coal dust is fully burnt, soot amount will significantly reduce.The alloy sand net then can further be controlled the generation of cigarette ash and overflow.
Described boiler furnace is outside equipped with external thermal insulation, heat-insulation layer is outward a shell body, is provided with porcelain bead in the described external thermal insulation, and porcelain bead wears with reinforcing bar, reinforcing bar one end is installed on the boiler casing, the other end is installed on the shell body, and the downward-sloping from inside to outside setting of reinforcing bar is linked with flitch near on reinforcing bar one end of shell body, flitch can be selected 3cm * 3cm or 4cm * 4cm, the porcelain bead level interval is 15-20cm, and vertical interval is 30-40cm, is provided with plant ash between the gap of porcelain bead and flitch.
The beneficial effects of the utility model are: can make full use of the heat of burner hearth, improve the efficient of boiler.Imperfect combustion coal is fully burnt, and fume amount significantly reduces, and has controlled the generation of flue dust and overflows, and reaches national requirements for environmental protection.
In order to reach the purpose of further purification flue dust, the vertical boiler exhaust opening is connected in the ground brick flue, and sorghum stalks or the reed rod that has glued mud is set downwards from flue cover plate seam crossing, also be stained with the thick mud of 1.5-2.5cm around the flue simultaneously, its objective is and carry out the secondary filter flue dust, sorghum stalks or reed rod and flue all around the mud of flue dust through having smeared mud, part flue dust just is bonded on the mud, can reduce the concentration of discharging flue dust like this and reach environmental requirement.
The utility model can also be realized the UTILIZATION OF VESIDUAL HEAT IN of boiler.
Description of drawings
Fig. 1 is the utility model embodiment 1 described structural representation.
Fig. 1-1 is the A-A view of Fig. 1.
Fig. 1-2 is the B-B view of Fig. 1.
Fig. 1-3 is the C-C view of Fig. 1.
Fig. 2 is the utility model embodiment 2 described structural representations.
Fig. 2-1 is the D-D view of Fig. 2.
Fig. 2-2 is the E-E view of Fig. 2.
Fig. 2-3 is the F-F view of Fig. 2.
The specific embodiment
Embodiment 1
As Fig. 1, Fig. 1-1, Fig. 1-2, shown in Fig. 1-3, a kind of vertical smoke abatement and dust control power economized boiler of the utility model, it is a kind of vertical boiler, comprise body of heater 1, fire door 2, chimney 3 and water tank 4, fire door is installed in the body of heater bottom, chimney is installed in the body of heater top, water tank is installed in the body of heater, comprise water inlet and delivery port 17, at bottom of furnace body, be positioned at the fire door top and be provided with temperature raising comb 5, the adjacent two layers comb is parallel to each other, in comb, be installed with hang spring 15, the hang spring two ends are fixed on the furnace wall, are furnished with to filter silk screen 6 between the most following two-layer comb, and the filter wire network edge is fixed on the furnace wall; Body of heater top chimney outlet is provided with the secondary water tank 7 of preheating, and the water inlet 16 of the secondary water tank of preheating is positioned at its underpart, and delivery port is positioned at its top, and delivery port is communicated with the boiler water tank water inlet through pipeline 8.During use, the inflow of the secondary water tank of preheating equates with the boiler fills amount.
Temperature raising comb described in the utility model top vertically is placed with 3 and forms leg-of-mutton spiral type heated water pipe 9, and every group of helix tube is made up of the 3-4 root helix tube of different tube diameters, and every group of helix tube two ends communicate with the water tank sidewall.
The secondary water tank of preheating described in the utility model is square, the secondary water tank of preheating has flue 10 and smoke exhaust pipe 11, the flue middle part is welded with protuberance the bottom of a pan shape shield 12 down, every group of smoke exhaust pipe is that " C " shape pipe of 12 length alternations of 1/12nd of chimney diameter constitutes by diameter, and its upper and lower opening lays respectively at the top and the bottom of shield and communicates with flue.
The secondary water tank of preheating described in the utility model is provided with vent valve, and water tank upper is provided with safety valve and Pressure gauge, water level meter and thermometer.
Temperature raising comb described in the utility model is the high temperature porcelain tube, and hang spring adopts electric furnace heating wire, and screen pack is the alloy sand net.High temperature porcelain tube, electric furnace heating wire and alloy sand net all are fixed on the furnace wall, and be real with the fire clay envelope then.
In order to reduce heat dissipation capacity, the equal horizontal direction of the valve on the utility model pipeline is installed, and the valve handle is not up.
When this boiler internal diameter strengthens, can select helix tube according to circumstances, the group number of helix tube is the odd number value, and the sand net above the high-temperature region can stop that smoke stratification passes through, and the sand reticular density can be determined according to environmental requirement.When boiler stove tube directly increased, every group of helix tube can be installed heating tube.
The described boiler furnace of present embodiment is outside equipped with external thermal insulation, heat-insulation layer is outward a shell body, be provided with porcelain bead in the described external thermal insulation, porcelain bead wears with reinforcing bar, and reinforcing bar one end is installed on the boiler casing, the other end is installed on the shell body, the downward-sloping from inside to outside setting of reinforcing bar, flitch can be selected 3cm * 3cm, and the porcelain bead level interval is 15-20cm, vertical interval is 30-40cm, is provided with plant ash between porcelain bead and flitch gap.
In order to reach the purpose of further purification flue dust, the vertical boiler exhaust opening is connected in the ground brick flue, and sorghum stalks or the reed rod that has glued mud is set downwards from flue cover plate seam crossing, also be stained with the thick mud of 1.5-2.5cm around the flue simultaneously, its objective is and carry out the secondary filter flue dust, sorghum stalks or reed rod and flue all around the mud of flue dust through having smeared mud, part flue dust just is bonded on the mud, can reduce the concentration of discharging flue dust like this and reach environmental requirement.
The described boiler of present embodiment is applicable to vertical steam boiler, must use demineralized water.The described boiler energy-saving effect of present embodiment can reach 25%.
The present embodiment boiler can be located in the underground hot house on the sunny side, is provided with glass room in the hot house, and boiler is arranged in the glass room, north, the roof height of hot house and boiler room, in the south low, downward-sloping 30 degree angles, its north wall pitching or pitch-dark is convenient to absorb solar energy.Boiler chimney outlet absolute altitude is at the following 1.3-1.5m of outdoor Horizon.Boiler flue should be than the big 4-5 of boiler body chimney diameter doubly.Chimney can lead to heated kang, wall with flues, greenhouse, garage etc., makes full use of waste heat.Boiler room body of wall surface layer is coated with albertite and is convenient to heat absorption.Boiler pipe arrangement valve handle should be placed on the pipeline side.When coal quantity is better, 5 layers can be installed, when coal quantity is relatively poor, 1-2 layer porcelain tube can be used more as Datong District's coal, high-temperature region porcelain tube.
Embodiment 2
As Fig. 2, Fig. 2-1, Fig. 2-2, shown in Fig. 2-3, a kind of vertical smoke abatement and dust control power economized boiler of the utility model, it is a kind of vertical boiler, comprise body of heater 1, fire door 2, chimney 3 and water tank 4, comprise water inlet and delivery port 17, fire door is installed in the body of heater bottom, and chimney is installed in the body of heater top, and water tank is installed in the body of heater, at bottom of furnace body, be positioned at the fire door top and be provided with temperature raising comb 5, the adjacent two layers comb is parallel to each other, totally 5 layers of combs, and the distance of adjacent comb is 1cm, in comb, be installed with hang spring 15, the hang spring two ends are fixed on the furnace wall, are furnished with to filter silk screen 6 between the most following two-layer comb, and the filter wire network edge is fixed on the furnace wall; Body of heater top chimney outlet is provided with the secondary water tank 7 of preheating, and the water inlet 16 of the secondary water tank of preheating is positioned at its underpart, and delivery port is positioned at its top, and delivery port is communicated with water tank inlet through pipeline 8.During use, the inflow of the secondary water tank of preheating equates with the boiler fills amount.
Described temperature raising comb top is provided with steel pipe 13 in the utility model body of heater, and described steel pipe is arranged alternately anyhow, and the steel pipe both sides are welded with the fin 14 of downward-sloping 20 degree, and inboard wall of furnace body also is welded with the fin at downward-sloping 20 degree angles.Described diameter of steel tube is 300mm, and spacing is 100mm between the steel pipe.
The many group fanning strip of the fin of the utility model inboard wall of furnace body on the body of heater horizontal cross-section, arranging, its arc part is positioned at the center of body of heater, its root weld is on the sidewall of water tank, and the angle of its sector and horizontal plane and the angle between vertical plane all are not more than 45 degree.
The secondary water tank of preheating described in the utility model is square, the secondary water tank of preheating has flue 10 and smoke exhaust pipe 11, the flue middle part is welded with protuberance the bottom of a pan shape shield 12 down, every group of smoke exhaust pipe is that " C " shape pipe of 12 length alternations of 1/12nd of chimney diameter constitutes by diameter, and its upper and lower opening lays respectively at the top and the bottom of shield and communicates with flue.
The secondary water tank of preheating described in the utility model is provided with vent valve, and water tank upper is provided with safety valve and Pressure gauge, water level meter and thermometer.
Temperature raising comb described in the utility model is the high temperature porcelain tube, and hang spring adopts electric furnace heating wire, and screen pack is the alloy sand net.
In order to reduce heat dissipation capacity, the equal horizontal direction of the valve on the utility model pipeline is installed, and the valve handle is not up.
The described boiler furnace of present embodiment is outside equipped with external thermal insulation, heat-insulation layer is outward a shell body, be provided with porcelain bead in the described external thermal insulation, porcelain bead wears with reinforcing bar, and reinforcing bar one end is installed on the boiler casing, the other end is installed on the shell body, the downward-sloping from inside to outside setting of reinforcing bar, flitch can be selected 4cm * 4cm, and the porcelain bead level interval is 15-20cm, vertical interval is 30-40cm, is provided with plant ash between the gap of porcelain bead and flitch.
In order to reach the purpose of further purification flue dust, the vertical boiler exhaust opening is connected in the ground brick flue, and sorghum stalks or the reed rod that has glued mud is set downwards from flue cover plate seam crossing, also be stained with the thick mud of 1.5-2.5cm around the flue simultaneously, its objective is and carry out the secondary filter flue dust, sorghum stalks or reed rod and flue all around the mud of flue dust through having smeared mud, part flue dust just is bonded on the mud, can reduce the concentration of discharging flue dust like this and reach environmental requirement.
The utility model is applicable to vertical steam drinking water boiler.The described boiler energy-saving effect of present embodiment can reach 20%.
The present embodiment boiler can be located in the basement hot house on the sunny side, is provided with glass room in the hot house, and boiler is arranged in the glass room, north, the roof height of hot house and boiler room, in the south low, downward-sloping 30 degree angles, its north wall pitching or pitch-dark is convenient to absorb solar energy.Boiler chimney outlet absolute altitude is at the following 1.3-1.5m of outdoor Horizon.Boiler flue should be than the big 4-5 of boiler body chimney diameter doubly.Chimney can lead to heated kang, wall with flues, greenhouse, garage etc., makes full use of waste heat.Boiler room body of wall surface layer is coated with albertite and is convenient to heat absorption.Boiler pipe arrangement valve handle should be placed on the pipeline side.When coal quantity is better, 5 layers can be installed, when coal quantity is relatively poor, 1-2 layer porcelain tube can be used more as Datong District's coal, high-temperature region porcelain tube.
The utility model is not limited to above-mentioned preferred forms, and other any identical with the utility model or akin products that anyone draws under enlightenment of the present utility model all drop within the protection domain of the present utility model.
Claims (9)
1, a kind of vertical smoke abatement and dust control power economized boiler, it is a kind of vertical boiler, comprises body of heater, fire door, chimney and water tank, and fire door is installed in the body of heater bottom, chimney is installed in the body of heater top, water tank is installed in the body of heater, it is characterized in that: be provided with multilayer temperature raising comb at bottom of furnace body, above being positioned at fire door, the adjacent two layers comb is parallel to each other, in comb, be installed with hang spring, the hang spring two ends are fixed on the furnace wall, are furnished with the filtration silk screen between the most following two-layer comb, and the filter wire network edge is fixed on the furnace wall; Body of heater top chimney outlet is provided with the secondary water tank of preheating, and the water inlet of the secondary water tank of preheating is positioned at its underpart, and delivery port is positioned at its top, is communicated with water tank inlet through pipeline.
2, vertical smoke abatement and dust control power economized boiler as claimed in claim 1, it is characterized in that: described temperature raising comb top vertically is placed with 3 and forms leg-of-mutton spiral type heated water pipe, every group of helix tube is made up of the 3-4 root helix tube of different tube diameters, and every group of helix tube two ends communicate with the water tank sidewall.
3, vertical smoke abatement and dust control power economized boiler as claimed in claim 1, it is characterized in that: described temperature raising comb top is provided with steel pipe in the body of heater, described steel pipe is arranged alternately anyhow, and the steel pipe both sides are welded with the fin of downward-sloping 20 degree, and inboard wall of furnace body also is welded with the fin at downward-sloping 20 degree angles.
4, vertical smoke abatement and dust control power economized boiler as claimed in claim 3, it is characterized in that: the many group fanning strip of the fin of inboard wall of furnace body on the body of heater horizontal cross-section, arranging, its arc part is positioned at the center of body of heater, its root weld is on the sidewall of water tank, and the angle of its sector and horizontal plane and the angle between vertical plane all are not more than 45 degree.
5, vertical smoke abatement and dust control power economized boiler as claimed in claim 1, it is characterized in that: the secondary water tank of described preheating is square, the secondary water tank of preheating has flue and smoke exhaust pipe, the flue middle part is welded with protuberance the bottom of a pan shape shield down, every group of smoke exhaust pipe is that " C " shape pipe of 12 length alternations of 1/12nd of chimney diameter constitutes by diameter, and its upper and lower opening lays respectively at the top and the bottom of shield and communicates with flue.
6, vertical smoke abatement and dust control power economized boiler as claimed in claim 5 is characterized in that: the secondary water tank of described preheating is provided with vent valve, and water tank upper is provided with safety valve and Pressure gauge, water level meter and thermometer.
7, vertical smoke abatement and dust control power economized boiler as claimed in claim 1, it is characterized in that: described temperature raising comb is the high temperature porcelain tube, and hang spring adopts electric furnace heating wire, and screen pack is the alloy sand net.
8, vertical smoke abatement and dust control power economized boiler as claimed in claim 1, it is characterized in that: described boiler furnace is outside equipped with external thermal insulation, heat-insulation layer is outward a shell body, be provided with porcelain bead in the described external thermal insulation, porcelain bead wears with reinforcing bar, reinforcing bar one end is installed on the boiler casing, the other end is installed on the shell body, the downward-sloping from inside to outside setting of reinforcing bar, be linked with flitch near on reinforcing bar one end of shell body, the porcelain bead level interval is 15-20cm, and vertical interval is 30-40cm, is provided with plant ash between the gap of porcelain bead and flitch.
9, vertical smoke abatement and dust control power economized boiler as claimed in claim 1, it is characterized in that: described vertical boiler exhaust opening is connected in the ground brick flue, and from flue cover plate seam crossing sorghum stalks or the reed rod that has glued mud is set downwards, also is stained with the thick mud of 1.5-2.5cm around the flue simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620117601 CN2929561Y (en) | 2006-05-24 | 2006-05-24 | Vertical smoke clearing dust-removing energy saving boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620117601 CN2929561Y (en) | 2006-05-24 | 2006-05-24 | Vertical smoke clearing dust-removing energy saving boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2929561Y true CN2929561Y (en) | 2007-08-01 |
Family
ID=38307943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620117601 Expired - Fee Related CN2929561Y (en) | 2006-05-24 | 2006-05-24 | Vertical smoke clearing dust-removing energy saving boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2929561Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267273A (en) * | 2013-06-07 | 2013-08-28 | 唐海东 | Fast and high-efficiency steam generator (or steam boiler) |
| CN104848527A (en) * | 2015-05-28 | 2015-08-19 | 苏州斯洛莱自动化设备有限公司 | Efficient heat-energy absorbing boiler |
| CN105066092A (en) * | 2015-08-17 | 2015-11-18 | 赵雷申 | Novel smokeless and dustless steam boiler |
-
2006
- 2006-05-24 CN CN 200620117601 patent/CN2929561Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267273A (en) * | 2013-06-07 | 2013-08-28 | 唐海东 | Fast and high-efficiency steam generator (or steam boiler) |
| CN104848527A (en) * | 2015-05-28 | 2015-08-19 | 苏州斯洛莱自动化设备有限公司 | Efficient heat-energy absorbing boiler |
| CN105066092A (en) * | 2015-08-17 | 2015-11-18 | 赵雷申 | Novel smokeless and dustless steam boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2929561Y (en) | Vertical smoke clearing dust-removing energy saving boiler | |
| CN201522091U (en) | Horizontal flashback coal burning boiler | |
| CN203215729U (en) | Efficient domestic water heating furnace | |
| CN105823090B (en) | A kind of heating stove based on honeycomb ceramic heat accumulator | |
| CN209341303U (en) | A kind of moulded coal is counter to raise decoupling burning environment-friendly type and cooks a meal radiator | |
| CN207585082U (en) | A kind of π types fuel vapor organic heat carrier furnace | |
| CN201852153U (en) | Waste heat recovering device for heat-inducting cooking stove | |
| CN201508037U (en) | Direct-combustion tube-typed grate organic heat carrier boiler | |
| CN201547957U (en) | Organic thermo carrier boiler | |
| CN206989687U (en) | A kind of power economized boiler | |
| CN201363881Y (en) | Vertical boiler | |
| CN201104012Y (en) | Domestic vertical heating boiler | |
| CN203642466U (en) | Quick heating hot-water boiler applicable to clean fuel | |
| CN205447839U (en) | Hot hot air heater is adopted to secondary | |
| CN2268200Y (en) | Positive-counter heating high-efficiency heating stove | |
| CN204786499U (en) | Clean energy -conserving oil field gas injection boiler | |
| CN2299937Y (en) | Vertical hot-tube water jacket heating furnace | |
| CN203375485U (en) | Novel energy-saving cooking stove | |
| CN201805891U (en) | Flue gas channel of heater for dense tobacco flue-curing house | |
| CN2704759Y (en) | Vertical smokeless and dustproof effective boilers | |
| CN201116778Y (en) | Hot-water heating type high effective energy-saving boiler | |
| CN207622553U (en) | A kind of energy-saving and environment-friendly heating kiln | |
| CN2286847Y (en) | High-efficiency multifunction shaped-coal domestic boiler | |
| CN206176719U (en) | High -efficient boiler of energy saving and emission reduction | |
| CN2356237Y (en) | Household heating stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070801 Termination date: 20110524 |