CN216563164U - Heating furnace capable of preventing air flow interference - Google Patents
Heating furnace capable of preventing air flow interference Download PDFInfo
- Publication number
- CN216563164U CN216563164U CN202122996119.7U CN202122996119U CN216563164U CN 216563164 U CN216563164 U CN 216563164U CN 202122996119 U CN202122996119 U CN 202122996119U CN 216563164 U CN216563164 U CN 216563164U
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- furnace
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 95
- 238000007599 discharging Methods 0.000 claims abstract description 28
- 238000007664 blowing Methods 0.000 claims abstract description 15
- 230000001502 supplementing effect Effects 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 22
- 238000009825 accumulation Methods 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000013589 supplement Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000002912 waste gas Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 235000012431 wafers Nutrition 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a heating furnace capable of preventing air flow interference, which comprises a furnace body, a hot air assembly, an air supplementing assembly and an air exhausting assembly, wherein the interior of the furnace body is hollow and is provided with a feeding hole and a discharging hole; the hot air assembly is provided with a heating channel for heating air, and the air outlet end of the heating channel is communicated with the furnace body and is used for heating the air and then introducing the air into the furnace body; the air supplementing assembly is provided with an air inlet and two air outlets, the air inlet is communicated with the heating channel, and the two air outlets are respectively arranged at the feeding hole and the discharging hole and used for blowing the heated air to the feeding hole and the discharging hole; the air inlet end of the air extraction component is communicated with the furnace body and is used for extracting air in the furnace body, so that the furnace body is in a negative pressure state. The utility model can prevent cold air from entering the furnace body.
Description
Technical Field
The utility model relates to the technical field of heating devices, in particular to a heating furnace capable of preventing air flow interference.
Background
In the process of preparing the solar photovoltaic cell, after printing the slurry on the silicon wafer, drying and sintering treatment are required, and furnace body heating equipment is generally adopted for drying and sintering. The heating furnace body is provided with a channel for the product to pass through. The furnace body is provided with a hot air inlet and a waste gas outlet, and organic waste gas is taken away through hot air circulation in the furnace body.
In the existing equipment, the furnace body is provided with a feed inlet and a discharge outlet, the whole furnace body structure is not completely sealed, unfiltered normal-temperature air enters the furnace body at the feed inlet and the discharge outlet of a product, the normal-temperature air can bring adverse effects to the temperature control inside the furnace body, and meanwhile the unfiltered air can pollute the silicon wafer.
SUMMERY OF THE UTILITY MODEL
In view of this, it is necessary to provide a heating furnace capable of preventing air flow interference, which solves the technical problem in the prior art that air at normal temperature enters the furnace body through the feeding hole and the discharging hole.
In order to achieve the above technical object, a technical solution of the present invention provides a heating furnace for preventing air flow interference, including:
the furnace body is hollow and provided with a feeding hole and a discharging hole;
the hot air assembly is provided with a heating channel for heating air, and the air outlet end of the heating channel is communicated with the furnace body and is used for heating the air and then introducing the heated air into the furnace body;
the air supplementing assembly is provided with an air inlet and two air outlets, the air inlet is communicated with the heating channel, the two air outlets are respectively arranged outside the feeding hole and the discharging hole, and a hot air curtain is formed outside the feeding hole and the discharging hole;
and the air inlet end of the air exhaust assembly is communicated with the furnace body and is used for exhausting air in the furnace body, so that the furnace body is in a negative pressure state.
In one embodiment, the furnace further comprises a conveying device, wherein the conveying device penetrates through the furnace body from the feeding hole to the discharging hole and is used for conveying materials from the feeding hole to the discharging hole; the hot air assembly is arranged on one side, close to the discharge port, of the furnace body, and the air exhaust assembly is arranged on one side, close to the feed port, of the furnace body, so that the direction from the hot air assembly to the air exhaust assembly is opposite to the material conveying direction in the furnace body.
In one embodiment, the hot air assembly comprises a heating box, a heating element and an air blowing element, wherein the heating element is used for heating air, the heating box is hollow and provided with an air inlet and an air outlet, the air outlet is communicated with the furnace body, the heating element is arranged in the heating box, and the air outlet end of the air blowing element is communicated with the air inlet and used for blowing air into the heating box.
In one embodiment, the heating box comprises a box body and a heat insulation plate, the box body is hollow inside and is provided with an opening at the top, the air inlet and the air outlet are formed in the side wall of the box body, the heat insulation plate is arranged opposite to the opening end of the box body and is connected to the box body, and the heating element is inserted in the heat insulation plate and extends into the box body.
In one embodiment, the heating box further comprises heat insulation cotton, and the heat insulation cotton is arranged between the heat insulation board and the opening end of the box body and on the inner wall of the box body and one side of the heat insulation board opposite to the box body.
In one embodiment, the hot air assembly further comprises a protective cover, and the protective cover is covered on the heating element and connected to the outer wall of the heat insulation plate.
In one embodiment, the air exhaust assembly comprises an air exhaust fan, and an air inlet end of the air exhaust fan is communicated with the furnace body.
In one embodiment, the air exhaust assembly further comprises an exhaust pipe, and the exhaust pipe is communicated with the air outlet end of the air exhaust fan.
In one embodiment, the exhaust pipe is hollow and has two open ends, the peripheral wall of the exhaust pipe is provided with a communication hole communicated with the air outlet end of the exhaust fan, the air exhaust assembly further comprises an oil accumulation box, the oil accumulation box is hollow and has an open top, and the open end of the oil accumulation box is communicated with one lower open end of the exhaust pipe.
In one embodiment, the furnace body further comprises two wind shields, wherein the two wind shields are respectively arranged at the feeding hole and the discharging hole of the furnace body, are respectively connected to the furnace body in a sliding manner, and are used for adjusting the sizes of the openings of the feeding hole and the discharging hole.
Compared with the prior art, the utility model has the beneficial effects that: the furnace body during operation lets in hot-blastly to the furnace body through hot-blast subassembly and heats the silicon chip, leads to the feed inlet and the discharge gate of furnace body through the hot-blast hot-air that mends the wind subassembly with the hot-blast hot-air that forms, avoids the outside air to get into the furnace body through feed inlet and discharge gate, takes out the waste gas that contains the volatile substance in the furnace body through the subassembly of bleeding to make and present the negative pressure state in the furnace body, can in time take away the waste gas in the furnace body, can guarantee the cleanliness factor of the inside hot-air of furnace body, improve the quality that the silicon chip was dried and sintered.
Drawings
FIG. 1 is a three-dimensional schematic view of a furnace according to the present invention for preventing gas flow disturbances;
FIG. 2 is a schematic view of a structure of a furnace for preventing disturbance of gas flow according to the present invention;
FIG. 3 is a schematic view of a partial structure of the furnace body and the wind shielding assembly of the heating furnace for preventing the air flow interference according to the present invention.
Reference numerals:
a furnace body 1;
a hot air component 2;
a heating tank 21;
a heating member 22;
a blower member 23;
a case 211;
an insulation board 212;
a protective cover 24;
a wind supplementing component 3;
an air intake and supply box 31;
an air outlet air supplement box 32;
an air extraction assembly 4;
an air draft fan 41;
an exhaust pipe 42;
an oil accumulation box 43;
a wind shielding assembly 5;
a wind deflector 51;
a guide strip 52;
a set screw 53;
and a conveying device 6.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the utility model and together with the description, serve to explain the principles of the utility model and not to limit the scope of the utility model.
The utility model provides a heating furnace capable of preventing air flow interference, which is used for heating materials, wherein the heated objects can be silicon wafers and the like.
As shown in fig. 1 and 2, the heating furnace for preventing air flow interference comprises a furnace body 1, a hot air component 2, an air supplement component 3 and an air exhaust component 4, wherein the furnace body 1 is hollow and provided with a feeding hole and a discharging hole; the hot air assembly 2 is provided with a heating channel for heating air, and the air outlet end of the heating channel is communicated with the furnace body 1 and is used for heating the air and then introducing the air into the furnace body 1; the air supplementing assembly 3 is provided with an air inlet and two air outlets, the air inlet is communicated with the heating channel, the two air outlets are respectively arranged outside the feeding hole and the discharging hole, and a hot air curtain is formed outside the feeding hole and the discharging hole; the air inlet end of the air extraction component 4 is communicated with the furnace body 1 and is used for extracting air in the furnace body 1, so that the furnace body 1 is in a negative pressure state. Furnace body 1 during operation, let in hot-blastly in to furnace body 1 through hot-blast subassembly 2 and heat the silicon chip, the hot-air that forms hot-blast subassembly 2 accesss to the feed inlet and the discharge gate of furnace body 1 through tonifying wind subassembly 3, avoid external air to get into furnace body 1 through feed inlet and discharge gate, take out the waste gas that contains the volatile substance in furnace body 1 through subassembly 4 of bleeding, and make and present negative pressure state in the furnace body 1, can in time take away the waste gas in the furnace body 1, can guarantee the cleanliness factor of the inside hot-air of furnace body 1, improve the quality that the silicon chip was dried and sintered.
Wherein, the furnace body 1 is in a micro negative pressure state.
In one embodiment, the top of the furnace body 1 is further provided with an air inlet hole and an air outlet hole.
As known to those skilled in the art, as an application of the prior art of the heating furnace, a conveying device, such as a conveying roller way or a chain conveyor belt, penetrates through the interior of the furnace body 1, receives the material at the discharging port side, conveys the material in the furnace body 1, and outputs the material from the discharging port side, and a heating device and/or a hot air assembly 2 inside the furnace body 1 dries or sinters the material, so that the material is dried or sintered during the conveying process inside the furnace body.
In one embodiment, the heating furnace for preventing the air flow interference further comprises a conveying device 6, wherein the conveying device 6 penetrates through the furnace body 1 from the feeding hole to the discharging hole and is used for conveying materials from the feeding hole to the discharging hole.
It will be appreciated that the conveyor 6 may transport roller tracks, chain conveyors or the like.
In one embodiment, the hot air assembly 2 is disposed on a side of the furnace body 1 close to the discharge port, and the air exhaust assembly 4 is disposed on a side of the furnace body 1 close to the feed port, so that the direction of air passing through the hot air assembly 2 to the air exhaust assembly 4 is opposite to the material conveying direction in the furnace body 1. The moving direction of the materials is opposite to the flowing direction of the hot air, so that the hot air can be fully contacted with the materials, and the utilization efficiency of the hot air is improved.
In one embodiment, the hot air assembly 2 includes a heating box 21, a heating element 22 for heating air, and an air blowing element 23, the heating box 21 is hollow and has an air inlet and an air outlet, the air outlet is communicated with the furnace body 1, the heating element 22 is disposed in the heating box 21, and an air outlet of the air blowing element 23 is communicated with the air inlet for blowing air into the heating box 21.
Wherein, the air outlet of the heating box 21 is communicated with the air inlet of the furnace body 1 through a pipeline.
Hot air is blown into the heating box 21 through the air blowing part 23, the air is heated by the heating part 22 after entering the heating box 21, and the heated air enters the furnace body 1 through the air outlet and the air inlet hole to continuously provide hot air for the furnace body 1.
It is understood that the air blowing member 23 may be a blower, a high pressure blower, and an axial flow blower.
In one of the embodiments, the blower 23 is provided with a filter element. By providing a filter element, air entering the air blowing member 23 can be filtered.
In one embodiment, the heating box 21 includes a box body 211 and an insulation board 212, the interior of the box body 211 is hollow, the top of the box body 211 is open, the side wall of the box body 211 is provided with an air inlet and an air outlet, the insulation board 212 is arranged opposite to the open end of the box body 211 and connected to the box body 211, and the heating element 22 is inserted into the insulation board 212 and extends into the box body 211.
After the air is introduced into the cavity formed by the box body 211 and the insulation board 212, the cavity is an air heating channel, and the heating element 22 heats the air in the cavity and can heat the flowing air.
It is understood that the heating element 22 may be a heating wire, a thermocouple, or the like.
In one embodiment, the heating box 21 further includes thermal insulation cotton 213, and the thermal insulation cotton 213 is disposed between the thermal insulation board 212 and the open end of the box body 211, on the inner wall of the box body 211, and on one side of the thermal insulation board 212 opposite to the box body 211.
. Through set up between the open end of box 211 and heated board 212 and separate warm cotton 213, can seal between the open end of box 211 and heated board 212, avoid the heat to outwards run off through the clearance between box 211 and the heated board 212.
In one embodiment, the hot air assembly 2 further comprises a shield 24, wherein the shield 24 is covered on the heating element 22 and is connected to the outer wall of the insulation board 212. By providing the protective cover 24, the portion of the heating member 22 exposed outside the tank body 211 and the heat insulating plate 212 can be protected, and the high-temperature heating member 22 is prevented from hurting people.
In one embodiment, the air supply assembly 3 comprises an air inlet air supply box 31 and an air outlet air supply box 32, the air inlet air supply box 31 is connected to the outer wall of the furnace body 1, the air inlet air supply box 31 is hollow inside and has an open bottom, the open bottom of the air inlet air supply box 31 is arranged above the feed port of the furnace body 1, and the top of the air inlet air supply box 31 is communicated with the air outlet of the box body 211 through a pipeline; the air-out air supplementing box 32 is connected to the outer wall of the furnace body 1, the hollow inside of the air-out air supplementing box 32 is provided with an opening at the bottom, the opening at the bottom of the air-out air supplementing box 32 is arranged above the discharge hole of the furnace body 1, and the top of the air-out air supplementing box 32 is communicated with the air outlet of the box body 211 through a pipeline.
In one embodiment, the air extracting assembly 4 comprises an air extracting fan 41, and an air inlet end of the air extracting fan 41 is communicated with the furnace body 1. Through setting up exhaust fan 41, when needs, start exhaust fan 41, take out the hot-air that contains the volatile substance in furnace body 1, can purify the air in the furnace body 1.
In one embodiment, the air exhaust assembly 4 further comprises an air exhaust pipe 42, and the air exhaust pipe 42 is communicated with the air outlet end of the air exhaust fan 41. Through setting up blast pipe 42 for the hot-air that exhaust fan 41 discharged can be discharged to exhaust treatment device through blast pipe 42, avoids containing the hot-air of volatile matter to permeate near furnace body 1.
In one embodiment, the exhaust pipe 42 is hollow and has two open ends, the peripheral wall of the exhaust pipe 42 is provided with a communication hole communicated with the air outlet end of the exhaust fan 41, the air exhaust assembly 4 further comprises an oil accumulation box 43, the oil accumulation box 43 is hollow and has an open top, and the open end of the oil accumulation box 43 is communicated with the lower open end of the exhaust pipe 42. When the hot air containing volatile substance passes through the exhaust pipe 42, part of the volatile substance is condensed to form oily substance to be attached to the exhaust pipe 42 and slide downward under the action of gravity, and the oily substance flowing to the bottom of the exhaust pipe 42 can be collected by arranging the oil collecting box 43.
As shown in fig. 3, in one embodiment, the heating furnace for preventing air flow interference further includes two wind shielding assemblies 5, the two wind shielding assemblies 5 are respectively disposed at the feeding port and the discharging port of the furnace body 1, the wind shielding assembly 5 includes a wind shielding plate 51, and the wind shielding plate 51 is disposed opposite to the feeding port or the discharging port and slidably connected to the furnace body 1 for adjusting the size of the opening of the feeding port and the discharging port.
In one embodiment, the wind shielding assembly 5 further comprises two guide strips 52 and a set screw 53, the two guide strips 52 are located at two sides of a feed port or a discharge port of the furnace body 1 and can be transversely or vertically arranged, the guide strips 52 are connected to the furnace body 1 and form a sliding groove with the outer wall of the furnace body 1 in a surrounding manner, one side of the guide strips 52, which is far away from the furnace body 1, is further provided with a threaded hole communicated with the sliding groove, two sides of the wind shielding plate 51 are respectively inserted into the two sliding grooves in a sliding manner, and the set screw 53 is in threaded connection with the threaded hole and movably abutted against the wind shielding plate 51.
Wherein, the cross-section of gib block 52 is the L type, and a right-angle side of gib block 52 is connected in furnace body 1, and another right-angle side is parallel to each other with the outer wall of furnace body 1, and is located the spout relative setting of the gib block 52 of the both sides of feed inlet and discharge gate.
The sliding wind shield 51 can adjust the opening size of the feed inlet and the discharge outlet, after the wind shield 51 slides, the set screw 53 is rotated, the set screw 53 abuts against the wind shield 51, and the wind shield 51 is pressed on the outer wall of the furnace body 1.
The specific working process of the utility model is as follows: the method comprises the following steps of arranging materials on a conveying device 6 penetrating through a furnace body 1, driving the materials to enter the furnace body 1 by the conveying device 6, moving the materials from a feeding hole of the furnace body 1 to a discharging hole of the furnace body 1, starting an air blowing piece 23, introducing filtered air into a heating box 21 by the air blowing piece 23, heating the air under the action of a heating piece 22, respectively introducing the heated air into the furnace body 1, an air inlet air supplementing box 31 and an air outlet air supplementing box 32, drying or sintering the materials in the furnace body 1 by hot air in the furnace body 1, and extracting volatile matters formed in the drying or sintering process out of the furnace body 1 by an air extraction component 4 along with the hot air; at the feed inlet and the discharge gate of furnace body 1, hot-blast air curtain is formed to air inlet air supplement box 31 and air outlet air supplement box 32 spun hot-air, can preheat the material that gets into furnace body 1 on the one hand, and the hot-blast air curtain that on the other hand formed also can block in unfiltered cold air directly gets into furnace body 1 from feed inlet or discharge gate, reduces the influence to the control by temperature change in the furnace body 1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. A heating furnace for preventing disturbance of gas flow, comprising:
the furnace body is hollow and provided with a feeding hole and a discharging hole;
the hot air assembly is provided with a heating channel for heating air, and the air outlet end of the heating channel is communicated with the furnace body and is used for heating the air and then introducing the heated air into the furnace body;
the air supplementing assembly is provided with an air inlet and two air outlets, the air inlet is communicated with the heating channel, the two air outlets are respectively arranged outside the feeding hole and the discharging hole, and a hot air curtain is formed outside the feeding hole and the discharging hole;
and the air inlet end of the air exhaust assembly is communicated with the furnace body and is used for exhausting air in the furnace body, so that the furnace body is in a negative pressure state.
2. The furnace according to claim 1, further comprising a conveying device, wherein the conveying device passes through the furnace body from the inlet to the outlet, and is used for conveying materials from the inlet to the outlet; the hot air assembly is arranged on one side, close to the discharge port, of the furnace body, and the air exhaust assembly is arranged on one side, close to the feed port, of the furnace body, so that the direction from the hot air assembly to the air exhaust assembly is opposite to the material conveying direction in the furnace body.
3. The heating furnace of claim 1, wherein the hot air assembly comprises a heating box, a heating element for heating air, and an air blowing element, the heating box is hollow and has an air inlet and an air outlet, the air outlet is communicated with the furnace body, the heating element is disposed in the heating box, and the air outlet of the air blowing element is communicated with the air inlet for blowing air into the heating box.
4. The heating furnace for preventing the air current interference according to claim 3, wherein the heating box comprises a box body and a heat insulation plate, the box body is hollow inside and is open at the top, the air inlet and the air outlet are formed in the side wall of the box body, the heat insulation plate is arranged opposite to the open end of the box body and is connected to the box body, and the heating element is inserted into the heat insulation plate and extends into the box body.
5. The heating furnace for preventing the air flow interference according to claim 4, wherein the heating box further comprises heat insulation cotton, and the heat insulation cotton is arranged between the heat insulation plate and the opening end of the box body, on the inner wall of the box body and on one side of the heat insulation plate opposite to the box body.
6. The furnace of claim 4, wherein the hot air assembly further comprises a shield covering the heating element and attached to an outer wall of the insulation board.
7. The heating furnace for preventing the air current interference according to claim 1, wherein the air extracting component comprises an air extracting fan, and an air inlet end of the air extracting fan is communicated with the furnace body.
8. The heater of claim 7, wherein the exhaust assembly further comprises an exhaust pipe, and the exhaust pipe is communicated with the air outlet end of the exhaust fan.
9. The heating furnace for preventing the air current interference according to claim 8, wherein the exhaust pipe is hollow and has two open ends, the peripheral wall of the exhaust pipe is provided with a communication hole communicated with the air outlet end of the air draft fan, the air exhaust assembly further comprises an oil accumulation box, the oil accumulation box is hollow and has an open top, and the open end of the oil accumulation box is communicated with the lower open end of the exhaust pipe.
10. The heating furnace for preventing the air flow interference according to claim 1, further comprising two wind shielding assemblies, wherein the two wind shielding assemblies are respectively arranged at the feeding port and the discharging port of the furnace body, each wind shielding assembly comprises a wind shielding plate, and the wind shielding plates are arranged opposite to the feeding port or the discharging port, are slidably connected to the furnace body, and are used for adjusting the sizes of the openings of the feeding port and the discharging port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122996119.7U CN216563164U (en) | 2021-11-30 | 2021-11-30 | Heating furnace capable of preventing air flow interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122996119.7U CN216563164U (en) | 2021-11-30 | 2021-11-30 | Heating furnace capable of preventing air flow interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216563164U true CN216563164U (en) | 2022-05-17 |
Family
ID=81579071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122996119.7U Active CN216563164U (en) | 2021-11-30 | 2021-11-30 | Heating furnace capable of preventing air flow interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216563164U (en) |
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2021
- 2021-11-30 CN CN202122996119.7U patent/CN216563164U/en active Active
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| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 88 Jiulonghu Street, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430078 Patentee after: WUHAN DR LASER TECHNOLOGY Co.,Ltd. Address before: 430070 No. 5, huashiyuan 2nd Road, Donghu New Technology Development Zone, Wuhan, Hubei Patentee before: WUHAN DR LASER TECHNOLOGY Co.,Ltd. |
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