CN109855108B - Stove with chimney provided with heat dissipation section - Google Patents
Stove with chimney provided with heat dissipation section Download PDFInfo
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- CN109855108B CN109855108B CN201811314058.8A CN201811314058A CN109855108B CN 109855108 B CN109855108 B CN 109855108B CN 201811314058 A CN201811314058 A CN 201811314058A CN 109855108 B CN109855108 B CN 109855108B
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- chimney
- heat dissipation
- dissipation section
- pipe
- gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention relates to a furnace with a chimney provided with a heat dissipation section, which comprises a furnace body, wherein the furnace body is provided with the chimney, an air inlet and a gas fuel inlet, the chimney is provided with the heat dissipation section, the heat dissipation section is a rectangular pipe formed by a left wall, a front wall, a right wall and a rear wall in a surrounding mode, a plurality of aluminum plates extending along the extension direction of a heat dissipation pipe are arranged in the heat dissipation section, the aluminum plates are connected with the inner surface of the heat dissipation section, a heat dissipation plate is arranged on the surface of the heat dissipation section, the heat dissipation plate extends along the direction vertical to the axis of the heat dissipation section, the heat dissipation plate is distributed along the axial direction of the heat dissipation section, and the heat dissipation plate comprises an outer plate, a middle plate and an inner plate. The invention aims to provide a furnace with a heat dissipation section on a chimney, which can meet the heat dissipation effect of tail gas, and solves the problem that the heat dissipation effect of the tail gas of the conventional fuel furnace can not meet the requirement.
Description
Technical Field
The invention relates to a furnace, in particular to a furnace with a chimney provided with a heat dissipation section.
Background
Combustion of objects is typically accomplished by a furnace, such as burning wood, coal, etc. The furnace is fired by air being contacted with the material (fuel) to be fired and then ignited. The flue gas generated during combustion is discharged through a tail gas discharge pipe. However, insufficient combustion often occurs in the combustion process, resulting in the emission of carbon monoxide contained in the tail gas along with the flue gas. The discharge of carbon monoxide not only wastes the fuel source but also causes air pollution of the discharged tail gas, and if the carbon monoxide enters the room, carbon monoxide poisoning may occur. In addition, the tail gas exhausted from the chimney is higher, the temperature which can be borne by a cloth bag for dedusting the tail gas is lower than that of the tail gas, and in order to enable the temperature of the cloth bag to be reduced to the range which can be borne by the cloth bag, the distance between a tail gas exhaust air outlet of the furnace and the cloth bag is prolonged in the conventional mode, namely the heat of the tail gas is not utilized in the conventional tail gas cooling mode; in addition, the heat dissipation effect of the existing chimney can not be good, and the heat dissipation effect is adjusted according to the requirement so as to change the temperature of the tail gas.
Disclosure of Invention
The first purpose of the invention is to provide a furnace with a heat dissipation section on a chimney, wherein the heat dissipation effect on tail gas can be conditioned, and the problem that the heat dissipation effect on the tail gas of the existing fuel furnace can not be conditioned is solved.
The second purpose of the present invention is to provide a furnace gas circuit structure capable of heating gas fuel by using tail gas to realize tail gas heat utilization, which solves the problem that the heat of tail gas of the existing fuel furnace is not utilized.
The third purpose of the present invention is to provide a furnace gas circuit structure capable of removing carbon monoxide in the tail gas based on the first purpose, which solves the problem that the existing furnace can not process carbon monoxide in the tail gas.
The technical problem is solved by the following technical scheme: the utility model provides a chimney is equipped with stove of heat dissipation section, includes the stove body, the stove body is equipped with chimney, air admission mouth and gas fuel inlet port, the chimney is equipped with the heat dissipation section, the heat dissipation section is the rectangular pipe that is enclosed by left wall, antetheca, right wall and back wall, be equipped with a plurality of aluminum plates that extend along the cooling tube extending direction in the heat dissipation section, aluminum plate links together with the internal surface of heat dissipation section, the heat dissipation section is equipped with the heating panel on the surface, the direction of the axis of perpendicular to heat dissipation section is extended along the heating panel, the axial distribution of heat dissipation section is followed to the heating panel, the heating panel includes that planking, one end on the cooling tube are connected can wear to establish the medium plate in the other end of planking with can wear to establish the inner panel. When the heat dissipation plate is used, the area of the heat dissipation plate is changed through the telescopic middle plate and the telescopic inner plate, so that the adjustment of the heat dissipation effect is realized. Can dispel the heat to tail gas, avoid reaching the temperature of sack too high, the radiating effect can be adjusted moreover.
Preferably, all the middle plates are connected together through middle plate connecting ribs, and all the inner plates are connected together through inner plate connecting ribs. The heating panel on same wall can be synchronous first flexible, and convenience during the adjustment is good.
As preferred, the inner panel splice bar passes through the telescopic link and supports on the cooling tube, the inner panel splice bar links together with the medium plate splice bar through the cable, the telescopic link includes first screwed pipe, double threaded rod and second screwed pipe, the one end of first screwed pipe with the inner panel splice bar links together, the one end threaded connection of double threaded rod is in the other end of first screwed pipe, the other end threaded connection of double threaded rod is in the one end of second screwed pipe, the other end of second screwed pipe is connected on the cooling tube, the screw thread direction of first screwed pipe with the screw thread opposite direction of second screwed pipe.
Preferably, the chimney jacket is provided with a middle pipe, the middle pipe jacket is provided with an outer pipe, a fuel chamber is formed between the middle pipe and the exhaust gas discharge pipe, a spiral guide sheet which takes a chimney central line as a central line is arranged in the fuel chamber, a spiral gas channel is formed in the fuel chamber by the spiral guide sheet, one end of the gas channel is connected with the gas fuel inlet, the other end of the gas channel is connected with an outlet of the fuel delivery pump, the part of the chimney which is positioned in the middle pipe is made of heat conduction materials, a gas chamber is formed between the outer pipe and the middle pipe, one end of the gas chamber is connected with the air inlet, and the other end of the gas chamber is connected. When the gas fuel burner is used, gas fuel is blown into the middle pipe through the fuel delivery pump, then the gas fuel advances to the gas fuel inlet along the spiral gas channel to reach the furnace, the gas fuel is blown into the outer pipe under the action of the blower, then the gas fuel advances along the gas channel, finally the gas fuel enters the furnace through the air inlet, and the fuel and the air in the furnace are combusted to generate heat to burn the burnt problem. Because the tail gas discharge pipe is located the intraductal part of zhong is the heat conduction material preparation and forms, so the fuel produces the heat exchange with the tail gas in the tail gas discharge pipe when flowing through the runner for the fuel is heated up, then is favorable to the burning after the fuel is heated up more, thereby plays the effect of retrieving the tail gas heat. The outer pipe is further arranged outside the middle pipe, so that air is input into the furnace through the outer pipe, the air plays a heat preservation role on fuel, and fuel lost by the fuel is absorbed by air participating in combustion, so that the utilization rate of heat can be further improved. The gas channel is set to be spiral, and the length of the flow channel is increased when the linear distance is unchanged, so that the heat exchange time of fuel and tail gas is increased, and the heat quantity utilized is increased when the heat exchange time is long. The second object of the invention is achieved.
Preferably, the direction of advance of the gaseous fuel in the intermediate duct is opposite to the direction of discharge of the flue gases in the chimney. The heat exchange effect is good.
The invention also comprises a plurality of air passages which are communicated with the inner space of the chimney and the air chamber. The device can enable part of air to enter the chimney to burn carbon monoxide in tail gas in the process of conveying air to the furnace, thereby playing a role in removing carbon monoxide. The third object of the invention is achieved.
Preferably, the air flue comprises a chimney part air hole arranged on the chimney and a middle pipe part air hole only positioned in the middle pipe and the spiral guide piece. The sealing between the air hole and the fuel gas channel can be conveniently realized.
Preferably, an inner pipe of the heat conduction structure penetrates through the chimney in a liftable mode, the inner pipe and the chimney are connected in a sealing mode, a plurality of inner pipe portion air holes which can be aligned with the port, located at one end of the chimney, of the air passage in a one-to-one correspondence mode are formed in the inner pipe, and lifting cylinders which drive the inner pipe to stretch out and draw back in the chimney are arranged between the inner pipe and the chimney. The amount of air entering the chimney can be adjusted, so that the requirement of removing the content of carbon monoxide can be met, and the useless increase of the energy consumption of the air blower caused by excessive air entering the chimney can be avoided.
The invention also comprises a lifting cylinder control unit and a carbon monoxide detection sensor for detecting the content of carbon monoxide in tail gas, when in an initial state, the air hole of the inner pipe part is completely staggered with the port of the air passage at one end of the chimney, and the inner pipe completely shields the port of the air passage at one end of the chimney, when the carbon monoxide detection sensor detects that the exhausted tail gas contains carbon monoxide, the lifting cylinder control unit drives the lifting cylinder to lift so that the air holes of the inner pipe part and the port of the air passage at one end of the chimney are completely aligned in a one-to-one correspondence manner, when the carbon monoxide detection sensor detects that carbon monoxide is not contained in the discharged tail gas again, the lifting cylinder control unit drives the lifting cylinder to lift so that the air hole of the inner pipe part and the port of the air passage at one end of the chimney are gradually staggered until the lifting cylinder stops lifting when the content of carbon dioxide in the discharged tail gas is just within the required range. The adjustment mode realizes the optimization of eliminating the discharged carbon monoxide, and then considers the reduction of the energy consumption of the blower, thereby having good environmental protection.
The invention has the following advantages: the heat dissipation effect of the tail gas is adjustable; the tail gas discharge pipe is located the part of intraductal for the heat conduction material preparation forms in the well, so fuel flow through the runner in the time with the tail gas production heat exchange in the tail gas discharge pipe for the fuel is heated up, then is favorable to the burning after the fuel is heated up more, thereby plays the effect of retrieving the tail gas heat. The outer pipe is further arranged outside the middle pipe, so that air is input into the furnace through the outer pipe, the air plays a heat preservation role on fuel, and fuel lost by the fuel is absorbed by air participating in combustion, so that the utilization rate of heat can be further improved. The gas channel is arranged to be spiral, the length of the channel is increased when the linear distance is unchanged, so that the heat exchange time of the fuel and the tail gas is increased, and the heat utilized is increased when the heat exchange time is long; the heat dissipation effect is adjustable.
Drawings
FIG. 1 is a schematic view of a chimney according to an embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1.
Fig. 3 is a schematic cross-sectional view of the heat dissipating section without the heat dissipating plate.
Fig. 4 is a schematic view of a second embodiment of the present invention without showing the heat dissipation section and the third groove.
In the figure: the heat radiation section 1, the left wall 11, the front wall 12, the right wall 13, the rear wall 14, the aluminum plate 15, the furnace body 2, the chimney 21, the air inlet 22, the gas fuel inlet 23, the heat radiation plate 3, the outer plate 31, the middle plate 32, the inner plate 33, the middle plate connecting rib 34, the inner plate connecting rib 35, the stay cable 36, the middle pipe 4, the fuel chamber 41, the spiral guide piece 42, the spiral gas channel 43, the fuel delivery pump 44, the outer pipe 5, the air chamber 51, the blower 52, the air passage 6, the chimney part air hole 61, the middle pipe part air hole 62, the telescopic rod 7, the first threaded pipe 71, the double-end threaded rod 72, the second threaded pipe 73, the inner pipe 8, the inner pipe part air hole.
Detailed Description
The invention is further described with reference to the following figures and examples.
First embodiment, referring to fig. 1, 2 and 3, a furnace with a chimney having a heat radiation section includes a furnace body. The furnace body is provided with a chimney 21, an air inlet and a gas fuel inlet. The chimney is fixedly connected with a heat dissipation section 1.
The heat dissipation section is enclosed by a left wall 11, a front wall 12, a right wall 13 and a rear wall 14. A plurality of aluminum plates 15 extending along the extending direction of the heat dissipation section are arranged in the heat dissipation section. The aluminum plates are distributed along the front and back directions. The aluminum plate is joined to the inner surface of the left wall. The outer surfaces of the left wall 11, the front wall 12, the right wall 13 and the rear wall 1 are provided with heat dissipation plates 3. The heat dissipation plate is of a flat plate structure. The heat dissipation plate extends in a direction perpendicular to the axial direction of the heat dissipation section. The heat dissipation plates are distributed along the axial direction of the heat dissipation section. The heat radiation plate includes an outer plate 31 having one end connected to the heat radiation section, a middle plate 32 having one end telescopically inserted into the other end of the outer plate, and an inner plate 33 telescopically inserted into the other end of the middle plate. The middle plates of all the heat dissipation plates located on the same wall of the heat dissipation section are connected together by middle plate connection ribs 34. The inner plates of all the heat radiating plates on the same wall of the heat radiating section are connected together by inner plate connecting ribs 35. The inner plate connecting ribs are connected with the middle plate connecting ribs through a plurality of inhaul cables 36. The two ends of the inner plate connecting rib are supported on the radiating pipe through the telescopic rods 7. The telescopic rod comprises a first threaded tube 71, a double-ended threaded rod 72 and a second threaded tube 73. One end of the first threaded pipe is connected with the inner plate connecting rib. One end of the double-threaded rod is in threaded connection with the other end of the first threaded pipe. The other end of the double-threaded rod is in threaded connection with one end of the second threaded pipe. The other end of the second threaded pipe is connected to the heat dissipation section. The thread direction of the first threaded pipe is opposite to that of the second threaded pipe.
During the use, realize the flexible of telescopic link through rotating double threaded rod, extract through inner panel splice bar drive inner panel when the telescopic link is elongated, further pull the medium plate splice bar and make the medium plate extract through the cable when the inner panel splice bar extends the cable tensioning. The inner plate is driven to insert the middle plate through the inner plate connecting rib during the contraction of the telescopic rod, and the middle plate is inserted to the bottom so as to press the middle plate to insert the outer plate to realize the contraction of the heat dissipation plate.
The second embodiment is different from the first embodiment in that:
referring to fig. 4, a middle pipe 4 is sleeved outside the chimney 21. The outer pipe 5 is sleeved outside the middle pipe. A fuel chamber 41 is formed between the middle pipe and the exhaust gas discharge pipe. The fuel chamber is provided with a spiral guide sheet 42 which takes the central line of the chimney as the central line. The helical guide vanes form a helical gas channel 43 within the fuel chamber. The gas channel is connected at one end to the gas fuel inlet 23 and at the other end to the outlet of the fuel transfer pump 44. The chimney is positioned in the middle pipe and is made of heat conducting materials. An air chamber 51 is formed between the outer tube and the middle tube. The air chamber is connected at one end to the air inlet opening 22 and at the other end to the outlet of the blower 52. The advancing direction of the gas fuel in the middle pipe is opposite to the discharging direction of the smoke in the chimney, specifically, the gas fuel advances downwards in a spiral manner in the spiral gas channel, and the smoke advances from bottom to top in the chimney. The chimney is communicated with the air chamber Zhejiang through a plurality of air passages 6. The air flue comprises a chimney part air hole 61 arranged on the chimney and a middle pipe part air hole 62 only positioned in the middle pipe and the spiral guide sheet. An inner pipe 8 of a heat conducting structure is arranged in the chimney in a penetrating way in a lifting way. The inner pipe is connected with the chimney in a sealing way. The inner tube is provided with a plurality of inner tube portion air holes 81. The opening area of the air hole of the inner pipe part is equal to the opening area of the air passage at one end of the chimney. The number of the air passages is equal to that of the air holes of the inner pipe part. The inner pipe portion air passages can be aligned with the ports of the air passages at one end of the chimney in a one-to-one correspondence mode. And a lifting cylinder 82 for driving the inner pipe to stretch and retract in the chimney is arranged between the inner pipe and the chimney. The lifting cylinder can be replaced by a lifting oil cylinder. This embodiment still includes lift cylinder the control unit and detects the carbon monoxide sensor of carbon monoxide content in the tail gas. When the carbon monoxide detection sensor detects that carbon monoxide is contained in the discharged tail gas again, the lifting cylinder control unit drives the lifting cylinder to lift so that the inner pipe portion air hole and the port of the air passage at one end of the chimney are gradually staggered until the content of carbon dioxide in the discharged tail gas is just within a required range, and then the lifting cylinder stops lifting. The heat dissipation section is in butt joint with the upper end of the inner pipe 8 through a telescopic pipeline, so that the inner pipe does not interfere with the fixation of the heat dissipation section when being lifted.
When the gas fuel burner is used, gas fuel is blown into the middle pipe through the fuel delivery pump, then the gas fuel advances to the gas fuel inlet along the spiral gas channel to reach the furnace, air is blown into the outer pipe under the action of the blower, then the gas fuel advances along the gas channel, finally the gas fuel enters the furnace through the air inlet, and the fuel and the air in the furnace are combusted to generate heat to burn the burnt problem. Because the tail gas discharge pipe is located the intraductal part of zhong is the heat conduction material preparation and forms, so the fuel produces the heat exchange with the tail gas in the tail gas discharge pipe when flowing through the runner for the fuel is heated up, then is favorable to the burning after the fuel is heated up more, thereby plays the effect of retrieving the tail gas heat. The outer pipe is further arranged outside the middle pipe, so that air is input into the furnace through the outer pipe, the air plays a heat preservation role on fuel, and fuel lost by the fuel is absorbed by air participating in combustion, so that the utilization rate of heat can be further improved. The gas channel is set to be spiral, and the length of the flow channel is increased when the linear distance is unchanged, so that the heat exchange time of fuel and tail gas is increased, and the heat quantity utilized is increased when the heat exchange time is long.
Claims (9)
1. The utility model provides a chimney is equipped with stove of heat dissipation section, includes the stove body, the stove body is equipped with chimney, air admission mouth and gas fuel inlet port, a serial communication port, the chimney is equipped with the heat dissipation section, the heat dissipation section is the rectangular pipe that is enclosed by left wall, antetheca, right wall and back wall, be equipped with a plurality of aluminum plates that extend along the cooling tube extending direction in the heat dissipation section, aluminum plate links together with the internal surface of heat dissipation section, the heat dissipation section be equipped with the heating panel on the surface, the direction of the axis of perpendicular to heat dissipation section is extended along the heating panel, the axial distribution of heat dissipation section is followed to the heating panel, the heating panel includes that planking, one end on the cooling tube are connected can wear to establish the medium plate in the other end of planking with stretching out and drawing back and can.
2. The furnace with the heat dissipating section in the chimney according to claim 1, wherein all the middle plates are connected together by middle plate connecting ribs, and all the inner plates are connected together by inner plate connecting ribs.
3. The stove that the chimney was equipped with heat dissipation section according to claim 2, its characterized in that, the inner panel splice bar passes through the telescopic link to be supported on the cooling tube, the inner panel splice bar links together with the medium plate splice bar through the cable, the telescopic link includes first screwed pipe, double threaded rod and second screwed pipe, the one end of first screwed pipe with the inner panel splice bar links together, double threaded rod's one end threaded connection in the other end of first screwed pipe, double threaded rod's other end threaded connection in the one end of second screwed pipe is served, the other end of second screwed pipe is connected on the cooling tube, the screw thread direction of first screwed pipe with the screw thread direction of second screwed pipe is opposite.
4. The furnace of claim 1, wherein the chimney has a middle tube, the middle tube has an outer tube, a fuel chamber is formed between the middle tube and the exhaust gas discharge tube, a spiral guide plate is disposed in the fuel chamber and centered on the central line of the chimney, the spiral guide plate forms a spiral gas channel in the fuel chamber, one end of the gas channel is connected to the gas fuel inlet, the other end of the gas channel is connected to the outlet of the fuel delivery pump, the chimney is disposed in the middle tube and made of a heat conductive material, a gas chamber is formed between the outer tube and the middle tube, one end of the gas chamber is connected to the air inlet, and the other end of the gas chamber is connected to the outlet of the blower.
5. The furnace with chimney with heat dissipating section as set forth in claim 4, wherein the gas fuel in the middle pipe advances in the direction opposite to the exhaust direction of the flue gas in the chimney.
6. The oven with the heat dissipating section in the chimney according to claim 4, further comprising a plurality of air passages communicating the chimney internal space and the air chamber.
7. The furnace with the chimney having the heat dissipating section as set forth in claim 6, wherein the air passage includes chimney portion air holes provided in the chimney and middle tube portion air holes provided only in the middle tube and the spiral guide piece.
8. The furnace provided with the heat dissipation section through the chimney according to claim 7, wherein an inner pipe of a heat conduction structure penetrates through the chimney in a liftable manner, the inner pipe is connected with the chimney in a sealing manner, a plurality of inner pipe air holes which can be aligned with the port of the air passage at one end of the chimney in a one-to-one correspondence manner are formed in the inner pipe, a lifting cylinder for driving the inner pipe to stretch in the chimney is arranged between the inner pipe and the chimney, and the heat dissipation section is in butt joint with the outer end of the inner pipe through a telescopic pipeline.
9. The furnace with the chimney having the heat dissipation section according to claim 8, further comprising a lifting cylinder control unit and a carbon monoxide detection sensor for detecting the content of carbon monoxide in the exhaust gas, wherein in an initial state, the inner pipe portion air hole and the port of the air passage at one end of the chimney are completely staggered, that is, the inner pipe completely shields the port of the air passage at one end of the chimney, when the carbon monoxide detection sensor detects that carbon monoxide is contained in the exhaust gas, the lifting cylinder control unit drives the lifting cylinder to lift so that the inner pipe portion air hole and the port of the air passage at one end of the chimney are completely aligned in a one-to-one correspondence manner, and when the carbon monoxide detection sensor detects that carbon monoxide is not contained in the exhaust gas again, the lifting cylinder control unit drives the lifting cylinder to lift so that the inner pipe portion air hole and the port of the air passage at one end of the chimney are gradually staggered until the content of carbon dioxide in the exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811314058.8A CN109855108B (en) | 2018-11-06 | 2018-11-06 | Stove with chimney provided with heat dissipation section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811314058.8A CN109855108B (en) | 2018-11-06 | 2018-11-06 | Stove with chimney provided with heat dissipation section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109855108A CN109855108A (en) | 2019-06-07 |
| CN109855108B true CN109855108B (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811314058.8A Active CN109855108B (en) | 2018-11-06 | 2018-11-06 | Stove with chimney provided with heat dissipation section |
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| CN (1) | CN109855108B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD142592A1 (en) * | 1979-03-21 | 1980-07-02 | Ulrich Froemling | DEVICE FOR CLOSING THE SLOTTED EXTRACTS |
| CN2390149Y (en) * | 1999-09-08 | 2000-08-02 | 付其祥 | Plug type valve non-metal heat-storage heat exchanger |
| JP5965170B2 (en) * | 2012-03-19 | 2016-08-03 | 新和企業株式会社 | Radiant tube heating device |
| CN207146425U (en) * | 2017-06-13 | 2018-03-27 | 天津云白环境设备制造有限公司 | A kind of civilian stainless steel chimney |
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Address after: 324000 room 708, building 2, Sanjiang East Road, Kecheng District, Quzhou City, Zhejiang Province Patentee after: Zhejiang jiace Engineering Consulting Co.,Ltd. Address before: 324000 room 708, building 2, Sanjiang East Road, Kecheng District, Quzhou City, Zhejiang Province Patentee before: Zhejiang jiace Technology Co.,Ltd. Address after: 324000 room 708, building 2, Sanjiang East Road, Kecheng District, Quzhou City, Zhejiang Province Patentee after: Zhejiang jiace Technology Co.,Ltd. Address before: 324000 room 708, building 2, Sanjiang East Road, Kecheng District, Quzhou City, Zhejiang Province Patentee before: ZHEJIANG BAISEN IMPORT AND EXPORT Co.,Ltd. |