CN219889619U - Tobacco gathering device and range hood - Google Patents
Tobacco gathering device and range hood Download PDFInfo
- Publication number
- CN219889619U CN219889619U CN202321226650.9U CN202321226650U CN219889619U CN 219889619 U CN219889619 U CN 219889619U CN 202321226650 U CN202321226650 U CN 202321226650U CN 219889619 U CN219889619 U CN 219889619U
- Authority
- CN
- China
- Prior art keywords
- air
- air outlet
- outlet
- smoke
- fan
- 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.)
- Active
Links
- 244000061176 Nicotiana tabacum Species 0.000 title description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 title description 2
- 239000000779 smoke Substances 0.000 claims abstract description 111
- 238000005192 partition Methods 0.000 claims description 8
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 230000000391 smoking effect Effects 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Landscapes
- Ventilation (AREA)
Abstract
The utility model discloses a smoke gathering device and a range hood, which comprise a smoke baffle plate and an air duct structure arranged on the smoke baffle plate, wherein the air duct structure comprises an air inlet, an air outlet and an air curtain fan which enables air flow to enter from the air inlet and blow out from the air outlet, the air outlet comprises an upper air outlet, a left air outlet and a right air outlet, and air flows blown out from the upper air outlet, the left air outlet and the right air outlet form an upper air curtain, a left air curtain and a right air curtain. According to the utility model, the air outlets at the three different positions of the upper air outlet, the left air outlet and the right air outlet are designed on the air duct structure, so that the air flow forms an air curtain at the left side, the right side and the upper side, the escape of oil smoke is prevented, and the smoking performance of the smoke machine is improved.
Description
Technical Field
The utility model relates to a smoke collecting device and a range hood, and belongs to the field of kitchen ware.
Background
The range hood generally can be provided with a smoke gathering device, the smoke gathering device generally comprises a smoke baffle plate and an air duct structure in structure, an air curtain is formed by air flow blown out of the air duct structure, the air curtain blocks oil smoke, the oil smoke is prevented from escaping, and the use experience of a user is improved.
At present, due to the consideration of cost saving, attractive appearance and the like, the conventional range hood has unreasonable structural design of an air duct structure for forming an air curtain, and the smoke blocking effect of the air curtain is general, and can only block smoke from one side (usually the upper side), so that the range hood cannot effectively block the oil smoke escaping from the left side and the right side of the range hood.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the smoke gathering device and the smoke ventilator, and the air outlets at three different positions of the upper air outlet, the left air outlet and the right air outlet are designed on the air duct structure, so that air current forms an air curtain at the left side, the right side and the upper side, the escape of smoke is prevented, and the smoking performance of the smoke ventilator is improved.
The utility model provides a draw in cigarette device, includes the fender cigarette board, sets up the wind channel structure on the fender cigarette board, and the wind channel structure includes air intake, air outlet and makes the air current get into from the air intake and the air curtain fan that blows out from the air outlet, and the air outlet includes air outlet, left air outlet and right air outlet, and the air current that blows out from air outlet, left air outlet and right air outlet is formed into respectively and is gone up, left and right side air curtain.
According to the technical scheme, the air outlet is designed on the air duct structure, and the air outlets at the three different positions of the left air outlet and the right air outlet are arranged, so that the air flow forms an air curtain at the left side, the right side and the upper side, the oil smoke is prevented from escaping, and the smoking performance of the smoke machine is improved.
Preferably, the air duct structure comprises an air duct cover plate, the air duct cover plate is connected with the back surface of the smoke baffle plate, an upper air outlet, a left air outlet and a right air outlet are formed in the air duct cover plate, and an air duct is formed between the air duct cover plate and the smoke baffle plate.
Preferably, the air curtain fan is a cross flow fan, an inlet of the cross flow fan is aligned to the air inlet, a plurality of flow dividing plates are arranged on an outlet of the cross flow fan, and the flow dividing plates form a left flow passage with an outlet facing to a left air outlet, a vertical flow passage with an outlet facing to an upper air outlet and a right flow passage with an outlet facing to a right air outlet.
Preferably, a plurality of air duct clapboards are arranged in the air duct, the air duct clapboards divide the air duct into an air inlet area, an upper air exhaust area, a left air exhaust area and a right air exhaust area, the air inlet area corresponds to the air inlet, the upper air exhaust area corresponds to the upper air outlet, the left air exhaust area corresponds to the left air outlet, and the right air exhaust area corresponds to the right air outlet; the air curtain fans are arranged in the air duct and comprise a first air curtain fan, a second air curtain fan and a third air curtain fan, the first air curtain fan discharges the air flow of the air inlet area to the upper air discharge area, the second air curtain fan discharges the air flow of the air inlet area to the left air discharge area, and the third air curtain fan discharges the air flow of the air inlet area to the right air discharge area. According to the air duct structure, due to the fact that related parts are hidden in the air duct cover plate, the whole arrangement is concise, the attractiveness of the smoke gathering device in the open state is guaranteed, and the market competitiveness of products is improved.
Preferably, the air duct partition plate and the air curtain fan are connected to the air duct cover plate.
Preferably, the air curtain fan is a centrifugal fan, a gap d1 is reserved between an air suction port of the centrifugal fan and the air duct cover plate, and the ratio between the gap d1 and the height d2 of the air curtain fan is not less than 0.2.
Preferably, the air inlet is arranged at the lower side of the air duct cover plate.
Preferably, the air duct structure is composed of an air duct, the air duct comprises an air inlet pipe with an air inlet, an upper air outlet pipe with an upper air outlet, a left air outlet pipe with a left air outlet, and a right air outlet pipe with a right air outlet, and inlets of the upper air outlet pipe, the left air outlet pipe and the right air outlet pipe are all communicated with an outlet of the air inlet pipe through an air curtain fan.
Preferably, the air inlet is a strip-shaped air inlet.
A range hood comprises a smoke gathering device, wherein the smoke gathering device is the smoke gathering device in any technical scheme. In summary, the utility model has the following beneficial effects:
1: according to the utility model, the air outlets at three different positions, namely the upper air outlet, the left air outlet and the right air outlet, are designed on the air duct structure, so that air current forms an air curtain on the left side, the right side and the upper side to prevent oil smoke from escaping, and the smoking performance of the smoke ventilator is improved.
2: according to the utility model, the air duct is formed by the air duct cover plate and the smoke baffle plate, and related components such as the air curtain fan and the like are hidden in the air duct cover plate, so that the whole arrangement of the back surface of the smoke baffle plate is concise, the attractiveness of the smoke gathering device in an opened state is ensured, and the market competitiveness of products is improved.
3: the air duct partition plate and the air curtain fan are connected to the air duct cover plate and form a whole with the air duct cover plate, so that the smoke baffle plate is assembled in an integral structural form in the process of assembling the smoke gathering device, the smoke gathering device is convenient to assemble, and the inside of the smoke gathering device can be cleaned or overhauled under the condition that the smoke gathering device does not need to be detached from the range hood, namely, a user can face the smoke gathering device from the front surface, and the smoke baffle plate without any accessory is detached, so that the smoke gathering device is simple and convenient, and is beneficial to cleaning or overhauling.
4: according to the utility model, the air inlet is arranged at the lower side of the air duct cover plate, and the air inlet can absorb the oil smoke escaping from the lower end of the smoke baffle plate while air is taken in.
5: according to the utility model, the air inlet is a strip-shaped air inlet, so that air inlet can be realized to a greater extent.
6: the utility model discloses an air duct structure which consists of an air duct, wherein the air duct comprises an air inlet pipe with an air inlet, an upper air outlet pipe with an upper air outlet, a left air outlet pipe with a left air outlet and a right air outlet pipe with a right air outlet, and inlets of the upper air outlet pipe, the left air outlet pipe and the right air outlet pipe are all communicated with an outlet of the air inlet pipe through an air curtain fan.
Drawings
Fig. 1 is a schematic and schematic diagram of a range hood;
fig. 2 is a schematic cross-sectional view of a range hood;
FIG. 3 is a cross-sectional view of a first smoke gathering device at a first view angle;
FIG. 4 is a schematic view of the duct structure of FIG. 3;
fig. 5 is a schematic cross-sectional view of the first at a second view angle (cut-away on the duct cover).
FIG. 6 is a schematic illustration of the structure of the first smoke gathering device at a third view angle;
FIG. 7 is a schematic illustration of the construction of a second smoke gathering device;
FIG. 8 is a schematic illustration of the construction of a third smoke gathering device;
fig. 9 is a schematic and schematic structural view of a fourth smoke gathering device.
In the figure: 0. fume collecting hood, 1, fume baffle, 20, air duct cover plate, 21, air inlet, 221, upper air outlet, 222, left air outlet, 223, right air outlet, 23, air curtain fan, 23a, first air curtain fan, 23b, second air curtain fan, 23c, third air curtain fan, 24, air duct baffle, 251, air inlet pipe, 252, upper air outlet pipe, 253, left air outlet pipe, 254, right air outlet pipe, 26 and splitter plate.
Detailed Description
The utility model will be further illustrated by the following examples in conjunction with the accompanying drawings.
Examples:
in this embodiment, a smoke collecting device and a range hood including the smoke collecting device are provided. The range hood, see fig. 1-2, generally comprises a smoke collecting hood 0 and a smoke collecting device matched with the smoke collecting hood 0, and under normal conditions, the smoke collecting device is in a closed state, and when the range hood is used, the smoke collecting device is opened.
The smoke collecting device is shown in fig. 3-6, and comprises a smoke baffle plate 1 and an air channel structure arranged on the smoke baffle plate 1, wherein the air channel structure comprises an air inlet 21, an air outlet and an air curtain fan 23 for enabling air flow to enter from the air inlet 21 and to be blown out from the air outlet, the air inlet 21 is preferably a strip-shaped air inlet, the air inlet can be realized to a greater extent, the strip-shaped air inlet can be an entire opening or an entire body formed by a plurality of openings which are linearly distributed.
Unlike the prior art, the air outlet includes an upper air outlet 221, a left air outlet 222 and a right air outlet 223, and air flows blown out from the upper air outlet 221, the left air outlet 222 and the right air outlet 223 are respectively formed into an upper air curtain, a left air curtain and a right air curtain, so that the oil smoke is effectively prevented from escaping, and the smoking performance of the smoke ventilator is improved.
For the air duct structure, the first air duct structure adopted specifically includes the air duct cover plate 20 connected with the back of the smoke baffle plate 1, the air duct cover plate 20 and the smoke baffle plate 1 can be specifically connected through a bonding mode, of course, other modes such as clamping connection, fastening connection and the like can be adopted, sealing structures such as sealant and the like are further utilized between the smoke baffle plate 1 and the air duct cover plate 20 to enable the smoke baffle plate 1 and the air duct cover plate 20 to realize sealing fit, the air duct cover plate 20 is in a bulge shape, an air duct is formed between the air duct cover plate 20 and the smoke baffle plate 1, an upper air outlet 221, a left air outlet 222, a right air outlet 223 and an air inlet 21 are all formed on the air duct cover plate 20, the upper air outlet 221 is formed at the upper side position of the air duct cover plate 20, and the left air outlet 222 and the right air outlet 223 are respectively formed at the left side position and the right side position of the air duct cover plate 20. According to the air duct structure with the air duct cover plate 20, due to the fact that related parts such as the air curtain fan 23 are hidden in the air duct cover plate 20, the whole back surface of the smoke baffle plate 1 is arranged succinctly, the attractiveness of the smoke gathering device in the open state is guaranteed, and the market competitiveness of products is improved.
The air duct cover 20 may be configured with an air curtain fan 23 to make air flow enter the air duct from the air inlet 21 and blow out from the upper air outlet 221, the left air outlet 222 and the right air outlet 223, so as to form a frame-type air curtain with upper smoke blocking, left smoke blocking and right smoke blocking effects.
The first specific embodiment is: as shown in fig. 9, the air curtain blower 23 is a cross flow blower, the inlet of the cross flow blower is aligned with the air inlet 21, a plurality of flow dividing plates 26 are arranged on the outlet of the cross flow blower, the flow dividing plates 26 form a left flow passage with the outlet facing the left air outlet 222, a vertical flow passage with the outlet facing the upper air outlet 221 and a right flow passage with the outlet facing the right air outlet 223, so that the air flow is blown out from the cross flow blower in three directions of left, upper and right.
The second specific embodiment is: as shown in fig. 6 and 8, a plurality of air duct partitions 24 are disposed in the air duct, the air duct is partitioned into an air inlet area, an upper air outlet area, a left air outlet area and a right air outlet area by the plurality of air duct partitions 24, the air inlet area corresponds to the air inlet 21, the upper air outlet area corresponds to the upper air outlet 221, the left air outlet area corresponds to the left air outlet 222, the right air outlet area corresponds to the right air outlet 223, the outlets of the air curtain fans 23 are simultaneously aligned with the inlets of the upper air outlet area, the left air outlet area and the right air outlet area, and the air curtain fans 23 are accelerated and then enter the upper air outlet area, the left air outlet area and the right air outlet area and are blown out from the upper air outlet 221, the left air outlet 222 and the right air outlet 223, so as to form a frame-type air curtain with upper smoke blocking, left smoke blocking and right smoke blocking effects.
As shown in fig. 4-5, 3 air curtain fans 23, specifically, a first air curtain fan 23a, a second air curtain fan 23b, and a third air curtain fan 23c are disposed in the air duct, meanwhile, a plurality of air duct partitions 24 are disposed in the air duct, the air duct is partitioned into an air inlet region, an upper air exhaust region, a left air exhaust region, and a right air exhaust region by the plurality of air duct partitions 24, the air inlet region corresponds to the air inlet 21, the upper air exhaust region corresponds to the upper air outlet 221, the left air exhaust region corresponds to the left air outlet 222, the right air exhaust region corresponds to the right air outlet 223, and the three air exhaust regions and the air inlet region do not affect each other, the first air curtain fan 23a allows air to enter the air duct from the air inlet 21, and then blow out from the upper air outlet 221, the second air curtain fan 23b allows air to enter the air duct 21, and then blow out from the left air outlet 222, and the third air curtain fan 23c allows air to enter the air duct 21, then blow out from the right air outlet 223, and the left air curtain fan 223 and the air curtain fan 23 has a smoke blocking effect on the left and right air curtain frame.
In the above-described air duct structure, the air duct partition 24 is preferably connected to the air duct cover 20, and the air curtain blower 23 is also connected to the air duct cover 20. Under this condition, the components such as the air duct baffle 24, the air curtain fan 23 and the like are formed into a whole with the air duct cover plate 20, so that the smoke baffle plate 1 is assembled with the whole structural form in the process of assembling the smoke collecting device, the assembling is convenient, and the inside of the smoke collecting device can be cleaned or overhauled under the condition that the smoke collecting device does not need to be detached from the range hood, namely, a user can face the smoke collecting device from the front surface, and the smoke baffle plate 1 without any accessory is detached, so that the smoke collecting device is simple and convenient and is beneficial to cleaning or overhauling.
For the second embodiment of the above-mentioned configuration of three air curtain fans 23 by using one air curtain fan 23 and the air duct cover plate, further, the air curtain fan 23 is a centrifugal fan, a certain gap d1 is left between the air suction port of the centrifugal fan and the air duct cover plate 20, the gap d1 provides a channel for the centrifugal fan to absorb air flow, and the ratio between the gap d1 and the height d2 of the air curtain fan 23 is not less than 0.2, so as to ensure that the air curtain fan 23 sucks air smoothly.
When the range hood works, the smoke collecting device is in an open state, at the moment, the smoke baffle is positioned at the side of the smoke inlet of the range hood and forms an acute angle with the smoke inlet, the lower the smoke baffle is, the farther the smoke baffle is away from the smoke inlet, the smaller the received suction force is, and the applicant finds that the suction force at the lower end of the smoke baffle is extremely small, the suction force is basically not available, and hidden danger of oil smoke escape exists.
The upper side position and the lower side position of the air flue cover plate 20 are respectively provided with a chamfer, and when the smoke collecting device is closed, the upper chamfer and the lower chamfer ensure that the upper side position and the lower side position of the air flue cover plate 20 are not interfered with a smoke collecting cavity of the smoke collecting cover 0. Meanwhile, the left side position and the right side position of the air duct cover plate 20 are provided with cut angles, and the two cut angles at the left side and the right side ensure that the left side and the right side of the air duct cover plate 20 are not interfered with a smoke collecting cavity of the smoke collecting cover 0 when the smoke collecting device is closed.
The second structure of the air duct structure is also provided in this embodiment: as shown in fig. 7, the air duct structure is composed of air ducts, the air ducts include an air inlet pipe 251 having an air inlet 21, an upper air outlet pipe 252 having an upper air outlet 221, a left air outlet pipe 253 having a left air outlet 222, and a right air outlet pipe 254 having a right air outlet 223, the inlets of the upper air outlet pipe 252, the left air outlet pipe 253, and the right air outlet pipe 254 are all communicated with the outlet of the air inlet pipe 251 through an air curtain blower 23, and the air ducts themselves are structures which are not easy to escape, so when the air ducts are connected with the smoke baffle 1, only the sealing and bonding condition of the air inlet 21 of the air inlet pipe 251 and the smoke baffle 1 need to be considered, so long as the air flow can smoothly enter the air inlet pipe 251, the air flow can smoothly reach the air outlet, the hidden hazards of the smoke escape are smaller, and the parts composing the air duct structure are not hidden from each other at the back of the smoke baffle 1, so that the air duct structure is convenient to maintain.
The above examples are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the spirit and scope of the present utility model. Various modifications and improvements of the technical scheme of the present utility model will fall within the protection scope of the present utility model without departing from the design concept of the present utility model, and the technical content of the present utility model is fully described in the claims.
Claims (10)
1. The utility model provides a draw in cigarette device, includes and keeps off smoke board (1), sets up wind channel structure on keeping off smoke board (1), wind channel structure includes air intake (21), air outlet and makes the air current follow air intake (21) get into and follow air curtain fan (23) that the air outlet blows out, a serial communication port, the air outlet includes last air outlet (221), left air outlet (222) and right air outlet (223), follow last air outlet (221) left air outlet (222) and the air current that right air outlet (223) blown out is upper, left and right side air curtain respectively.
2. The smoke collecting device according to claim 1, wherein the air duct structure comprises an air duct cover plate (20), the air duct cover plate (20) is connected with the back of the smoke baffle plate (1), the air duct cover plate (20) is provided with the upper air outlet (221), the left air outlet (222) and the right air outlet (223), and an air duct is formed between the air duct cover plate (20) and the smoke baffle plate (1).
3. The smoke collecting device according to claim 2, wherein the air curtain fan (23) is a cross flow fan, an inlet of the cross flow fan is aligned with the air inlet (21), a plurality of flow dividing plates (26) are arranged on an outlet of the cross flow fan, and the flow dividing plates (26) form a left runner with an outlet facing the left air outlet (222), a vertical runner with an outlet facing the upper air outlet (221) and a right runner with an outlet facing the right air outlet (223).
4. The smoke gathering device as recited in claim 2, wherein a plurality of air duct baffles (24) are provided in the air duct, the plurality of air duct baffles (24) divide the air duct into an air intake area, an upper air exhaust area, a left air exhaust area and a right air exhaust area, the air intake area corresponds to the air intake (21), the upper air exhaust area corresponds to the upper air outlet (221), the left air exhaust area corresponds to the left air outlet (222), and the right air exhaust area corresponds to the right air outlet (223);
the air curtain fan (23) is arranged in the air duct, the air curtain fan (23) comprises a first air curtain fan (23 a), a second air curtain fan (23 b) and a third air curtain fan (23 c), the first air curtain fan (23 a) discharges air flow in the air inlet area to the upper air exhaust area, the second air curtain fan (23 b) discharges air flow in the air inlet area to the left air exhaust area, and the third air curtain fan (23 c) discharges air flow in the air inlet area to the right air exhaust area.
5. The smoke collecting device according to claim 4, wherein the air duct partition (24) and the air curtain fan (23) are both connected to the air duct cover plate (20).
6. The smoke collecting device according to claim 2, wherein the air curtain fan (23) is a centrifugal fan, a gap d1 is reserved between an air suction port of the centrifugal fan and the air duct cover plate (20), and the ratio of the gap d1 to the height d2 of the air curtain fan (23) is not smaller than 0.2.
7. A smoke gathering device as claimed in claim 2, characterised in that the air inlet (21) is provided at a lower position of the duct cover (20).
8. The smoke collecting device according to claim 1, wherein the air duct structure is composed of an air duct, the air duct comprises an air inlet pipe (251) with the air inlet (21), an upper air outlet pipe (252) with the upper air outlet (221), a left air outlet pipe (253) with the left air outlet (222), and a right air outlet pipe (254) with the right air outlet (223), and the inlets of the upper air outlet pipe (252), the left air outlet pipe (253) and the right air outlet pipe (254) are all communicated with the outlet of the air inlet pipe (251) through an air curtain fan (23).
9. A smoke-gathering device as recited in claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8, wherein the air intake (21) is an elongated air intake (21).
10. A range hood comprising a smoke gathering device, wherein the smoke gathering device is as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321226650.9U CN219889619U (en) | 2023-05-17 | 2023-05-17 | Tobacco gathering device and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321226650.9U CN219889619U (en) | 2023-05-17 | 2023-05-17 | Tobacco gathering device and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219889619U true CN219889619U (en) | 2023-10-24 |
Family
ID=88402877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321226650.9U Active CN219889619U (en) | 2023-05-17 | 2023-05-17 | Tobacco gathering device and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219889619U (en) |
-
2023
- 2023-05-17 CN CN202321226650.9U patent/CN219889619U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205065854U (en) | Range hood | |
| CN210861243U (en) | Fume exhaust fan | |
| CN201277612Y (en) | Household kitchen electric integration stove with independently controlled smoke suction port | |
| CN219889619U (en) | Tobacco gathering device and range hood | |
| CN204313345U (en) | A kind of side-suction type range hood that two air intake blower fan system is housed | |
| JP3843273B2 (en) | Air cleaner | |
| CN107327885B (en) | Shunting range hood | |
| CN101832602B (en) | Floor type air conditioner with bottom air inlet function | |
| CN212252746U (en) | Rotary suction type range hood | |
| CN108180547A (en) | Air conditioner room unit | |
| CN206449710U (en) | Noise reduction environmental protecting device and smoke exhaust ventilator | |
| CN214468831U (en) | Smoke machine | |
| CN212252747U (en) | Fume exhaust fan | |
| CN212252749U (en) | Fume exhaust fan | |
| CN204402534U (en) | Ventilating structure during constructing tunnel | |
| CN206247424U (en) | A kind of range hood plug-flow mechanism | |
| KR20100054023A (en) | Ventilator of one-body type ventilation grill | |
| CN214468830U (en) | Smoke machine | |
| CN212408770U (en) | Rotary smoking machine | |
| CN211952869U (en) | Rotary smoking machine structure | |
| CN201277611Y (en) | Household kitchen electric integration stove with improved smoking effect | |
| CN218846373U (en) | Window type new fan and window frame | |
| CN214406177U (en) | Rotary suction type range hood | |
| CN212430960U (en) | Fume exhaust fan | |
| CN215489897U (en) | Fume exhaust fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |