CN114216143A - Control method of oil fume filtering device and range hood - Google Patents
Control method of oil fume filtering device and range hood Download PDFInfo
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- CN114216143A CN114216143A CN202111531144.6A CN202111531144A CN114216143A CN 114216143 A CN114216143 A CN 114216143A CN 202111531144 A CN202111531144 A CN 202111531144A CN 114216143 A CN114216143 A CN 114216143A
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- oil smoke
- range hood
- oil fume
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- 238000001914 filtration Methods 0.000 title claims abstract description 122
- 239000003517 fume Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000000779 smoke Substances 0.000 claims abstract description 145
- 238000001179 sorption measurement Methods 0.000 claims abstract description 41
- 238000010411 cooking Methods 0.000 claims abstract description 23
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims description 17
- 239000004071 soot Substances 0.000 claims description 17
- 239000006233 lamp black Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention relates to a control method of an oil fume filtering device, which is used for controlling a range hood to perform oil fume suction work during cooking, calculating and acquiring the ratio of the oil fume concentration variation quantity on the downstream side of the oil fume filtering device to the oil fume variation quantity on the upstream side of the oil fume filtering device, and further taking the ratio as an oil fume adsorption capacity parameter for judging the oil fume adsorption capacity of the oil fume filtering device, thereby determining the oil stain state of the oil fume filtering device. The control method of the oil fume filtering device can accurately judge the adsorption capacity of the oil fume filtering device according to the real-time change condition of the oil fume concentration. The invention also relates to a range hood, which comprises a casing and a fan system arranged in the casing, wherein the range hood adopts the control method of the oil fume filtering device; an oil smoke filtering device is arranged at the air inlet end of the oil smoke channel on the casing, a first oil smoke concentration sensor is arranged on the upstream side of the oil smoke filtering device on the casing, and a second oil smoke concentration sensor is arranged on the downstream side of the oil smoke filtering device on the casing.
Description
Technical Field
The invention relates to the technical field of range hoods, in particular to a control method of an oil fume filtering device and a range hood applying the control method of the oil fume filtering device.
Background
The fan is a core component in the range hood, the existing range hood usually adopts a centrifugal fan to suck and discharge oil smoke, and the centrifugal fan drives a impeller to rotate in a centrifugal volute by a motor to generate negative pressure, so that the oil smoke is pumped away and discharged outdoors.
The oil filtering work in the range hood is always an important content in the work of the range hood, and the range hood is usually provided with an oil fume filtering device at the front end of the range hood so as to play roles of safety protection and large oil fume particle adsorption. Oil smoke filter equipment can adopt the oil net structure to realize the oil smoke and filter among the prior art usually, in order to reduce the cleaning frequency to the oil net, reinforcing oil smoke adsorption efficiency also has additionally to set up disposable filter screen in order to be used for adsorbing the oil smoke granule, and this disposable filter screen is convenient to be changed. But along with the increase of oil stain thickness on the oil smoke filter equipment, the ability that oil smoke filter equipment adsorbed the greasy dirt can constantly descend, and large granule thing in the oil smoke can get into the cigarette machine inside and attach to in the fan system like this, can cause fan system problem even. Therefore, the detection of the oil fume adsorption capacity of the oil fume filtering device is very important.
The invention discloses a method and a device for controlling a range hood, which are a Chinese patent with an authorized publication number of CN110939959B (application number of 201811116006.X), wherein in the scheme disclosed in the invention, a range hood is controlled to filter oil smoke according to the concentration of the oil smoke; and reminding to replace the filter screen according to the filtered historical oil smoke concentration data. However, the oil fume filtering devices in various range hoods have different oil guiding capacities for oil stains based on different structures. And each user's culinary art custom is different, and is also different to the influence of oil stain state on oil smoke filter equipment in the culinary art process, promptly based on the culinary art condition, the condition that the greasy dirt melts to oil droplet and flows to in the oil collecting cup is different. Therefore, the accumulated amount of the oil stains of the oil fume filtering device is obtained only through the historical oil fume concentration condition, and the accuracy of the judgment result of whether to replace the filter screen is poor.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a control method for an oil smoke filtering device, which can accurately determine the adsorption capacity of the oil smoke filtering device according to the real-time change of the oil smoke concentration.
The second technical problem to be solved by the present invention is to provide a range hood using the control method of the oil smoke filtering device in view of the above prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a control method of an oil fume filtering device is characterized by comprising the following steps: when cooking is carried out, the range hood is controlled to carry out oil smoke suction work, the ratio of the oil smoke concentration variation quantity of the downstream side of the oil smoke filtering device to the oil smoke variation quantity of the upstream side of the oil smoke filtering device is calculated and obtained, and then the ratio is used as an oil smoke adsorption capacity parameter for judging the oil smoke adsorption capacity of the oil smoke filtering device, and further the oil stain state of the oil smoke filtering device is determined.
As an improvement, for one-time cooking, before cooking, first lampblack concentration data P10 on the upstream side of the lampblack filtering device and second lampblack concentration data P20 on the downstream side of the lampblack filtering device are detected and acquired;
in the cooking process, controlling the range hood to work, and detecting and acquiring third oil smoke concentration data P1 on the upstream side of the oil smoke filtering device and fourth oil smoke concentration data P2 on the downstream side of the oil smoke filtering device;
calculating the oil smoke adsorption capacity parameter Y ═ P2-P20)/(P1-P10;
and determining the oil stain state of the oil smoke filtering device according to the Y.
Simply, Y is compared with a lampblack adsorption capacity threshold value Y0, if Y is less than or equal to Y0, the adsorption capacity of the lampblack filter device is judged to be normal, and if Y is more than Y0, the adsorption capacity of the lampblack filter device is judged to be weak.
Preferably, the related work control of the cleaning of the oil fume filtering device is carried out according to the oil stain state control of the oil fume filtering device.
The related cleaning work of the lampblack filter device comprises cleaning reminding, self-cleaning and/or moving driving aiming at the lampblack filter device.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides a range hood, includes the casing that has the oil smoke passageway, sets up the fan system in the casing, its characterized in that: a control method applying the oil fume filtering device;
the oil smoke filtering device is characterized in that an oil smoke filtering device is arranged at an air inlet end of the oil smoke channel on the casing, a first oil smoke concentration sensor is arranged on the upstream side of the oil smoke filtering device on the casing, and a second oil smoke concentration sensor is arranged on the downstream side of the oil smoke filtering device on the casing.
Preferably, the soot filtering device comprises an oil screen having an overflow aperture.
In order to improve the adsorption capacity to the oil smoke, the oil smoke filtering device also comprises a filter screen arranged on the downstream side of the oil screen.
In order to clean the oil screen conveniently, one side of the oil screen is rotatably connected to the machine shell, and the other side of the oil screen is movably clamped on the machine shell;
and the shell is also provided with a driving mechanism for driving the oil net to rotate.
The oil net driving mechanism is simple in structure and comprises a motor, a transmission gear set connected with the motor, a support connected with the transmission gear set and a connecting arm connected between the support and an oil net.
Compared with the prior art, the invention has the advantages that: according to the control method of the oil fume filtering device, the oil fume adsorption capacity of the oil fume filtering device is represented by the ratio of the oil fume concentration variation quantity on the downstream side of the oil fume filtering device to the oil fume variation quantity on the upstream side of the oil fume filtering device, the method does not depend on historical data in the calculation process, the condition of acquiring the adsorption capacity of the oil fume filtering device in real time can be acquired, the influence of factors such as a filtering structure and a cooking state on oil dirt collection conditions is avoided, and the judgment on the adsorption capacity of the oil fume filtering device is more accurate.
The range hood applying the control method of the oil fume filtering device can timely and accurately acquire the adsorption capacity condition of the oil fume filtering device in the range hood, and further control the oil fume suction work of the range hood and the treatment work of the oil fume filtering device according to specific conditions.
Drawings
Fig. 1 is a perspective view of a range hood in an embodiment of the present invention.
Fig. 2 is a sectional view of the range hood in the embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The control method of the oil fume filtering device in the embodiment comprises the following steps: when cooking is carried out, the range hood is controlled to carry out oil smoke suction work, the ratio of the oil smoke concentration variation quantity of the downstream side of the oil smoke filtering device to the oil smoke variation quantity of the upstream side of the oil smoke filtering device is calculated and obtained, and then the ratio is used as an oil smoke adsorption capacity parameter for judging the oil smoke adsorption capacity of the oil smoke filtering device, and further the oil stain state of the oil smoke filtering device is determined. The smaller the ratio of the oil smoke concentration variation on the downstream side of the oil smoke filtering device to the oil smoke variation on the upstream side of the oil smoke filtering device is, the smaller the oil smoke concentration variation on the downstream side of the oil smoke filtering device is, and accordingly, the strong oil smoke adsorption capability of the oil smoke filtering device is, and after the oil smoke filtering device adsorbs oil smoke particles, the oil smoke concentration variation on the downstream side of the oil smoke filtering device is very small. On the contrary, the absorption capacity of the soot filter device to soot is decreased, and a large amount of soot moves to the downstream side of the soot filter device, and a high soot concentration value is detected. The variation of the oil smoke concentration on the downstream side of the oil smoke filtering device and the variation of the oil smoke concentration on the upstream side of the oil smoke filtering device can be the variation of the oil smoke concentration relative to a reference value of the oil smoke concentration in the cooking process, and can also be the variation of the oil smoke concentration relative to the real-time detection oil smoke concentration before cooking in the cooking process.
The oil smoke concentration data can be detected by adopting various existing oil smoke concentration detection devices, such as an infrared oil smoke concentration detector.
In the present embodiment, specifically, for one cooking, before cooking, that is, before no soot is generated, the first soot concentration data P10 on the upstream side of the soot filtering device and the second soot concentration data P20 on the downstream side of the soot filtering device are detected and acquired. A user usually starts the range hood first and then performs cooking, so that the oil smoke data collected when the range hood is just started can be used as the first oil smoke concentration data P10 and the second oil smoke concentration data P20.
And in the cooking process, controlling the range hood to work, and under the condition that the range hood is already performing oil smoke suction work, simultaneously detecting and acquiring third oil smoke concentration data P1 on the upstream side of the oil smoke filtering device and fourth oil smoke concentration data P2 on the downstream side of the oil smoke filtering device.
Calculating the oil smoke adsorption capacity parameter Y ═ P2-P20)/(P1-P10; the cooking device comprises a cooking process, a sampling period, a calculation period and a calculation period, wherein P1 and P2 are real-time data acquired according to the sampling period in the cooking process, therefore, in the whole cooking process, the calculated Y is also real-time data, namely, real-time oil smoke adsorption capacity parameters can be acquired, and then the real-time oil stain state of the oil smoke filtering device is dynamically determined according to the Y. According to the requirement, the oil fume adsorption capacity can be directly represented by converting the Y value, such as data in the range of 0-100, and further utilizing the converted data. The user can carry out oil smoke filter equipment's cleaning process under the data circumstances of needs according to self demand.
However, in general, a user is concerned only when the soot absorption capacity is reduced to a level at which cleaning is necessary, and based on this, the state of the soot filter device is classified into two cases of normal absorption capacity and weak absorption capacity by a simple threshold setting. Namely, when the state of the oil fume filtering device is determined, Y is compared with an oil fume adsorption capacity threshold value Y0, if Y is less than or equal to Y0, the adsorption capacity of the oil fume filtering device is judged to be normal, oil stains of the corresponding oil fume filtering device are less, and the adsorption requirement can be met. If Y is more than Y0, the adsorption capacity of the oil smoke filtering device is judged to be weak, and the oil stain of the corresponding oil smoke filtering device is too much and needs to be cleaned. And then the related work control of the cleaning of the oil fume filtering device is carried out according to the oil stain state control of the oil fume filtering device. When the adsorption capacity of the oil fume filtering device is weak, the related work control of cleaning the oil fume filtering device is controlled, and according to a specific range hood, the related work of cleaning the oil fume filtering device comprises cleaning reminding, self-cleaning and/or movement driving aiming at the oil fume filtering device, wherein the movement driving aiming at the oil fume filtering device is used for driving the oil fume filtering device to move to a posture which is more beneficial for a user to clean.
As shown in fig. 1 and fig. 2, the control method of the soot filtering device in the present embodiment can be applied to various range hoods. In the present embodiment, a range hood to which the control method of the range hood filter device is applied will be described in detail by taking the range hood described below as an example.
The range hood in this embodiment includes a casing 1 having a smoke passage, and a fan system disposed in the casing 1. The air inlet end of the oil smoke channel on the machine shell 1 is provided with an oil smoke filtering device, the air inlet ends of the oil smoke channels of different types of range hoods are slightly different, for example, for a side-draft range hood, the air inlet end of the oil smoke channel is positioned at the front side of the lower part of the machine shell 1. For the top-suction type range hood, the air inlet end of the oil smoke channel is located on the lower end surface of the machine shell 1.
A first smoke concentration sensor 2 is provided on the upstream side of the smoke filtering device on the casing 1, and a second smoke concentration sensor 3 is provided on the downstream side of the smoke filtering device on the casing 1. The first oil smoke concentration sensor 2 and the second oil smoke concentration sensor 3 can adopt various existing oil smoke concentration sensors, for example, infrared oil smoke concentration sensors can be adopted, and the infrared oil smoke concentration sensors include infrared transmitters and infrared receivers which are oppositely arranged. During operation, the oil smoke concentration is determined through the light intensity obtained by the infrared receiver.
The oil smoke filter device comprises an oil screen 4 with overflowing holes, wherein in the embodiment, the overflowing holes of the oil screen 4 are a plurality of strip-shaped holes which are arranged in parallel. In order to improve the adsorption capacity to the soot, the soot filtering device further includes a filter screen 5 disposed on the downstream side of the oil screen 4. The filter screen 5 can adopt a disposable filter layer structure, and the density of the holes on the filter screen 5 can be larger than that of the overflowing holes on the oil screen 4, so that the adsorption capacity of oil smoke particles in oil smoke is improved. The filter screen 5 may be attached to the inner side of the oil screen 4 by a connection structure for detection.
In addition, one side of the oil smoke oil net 4 in this embodiment is rotatably connected to the casing 1, so as to ensure a rotation space of the oil smoke and facilitate cleaning of the inner side of the oil smoke after the oil smoke rotates, in this embodiment, the rear side of the oil smoke net 4 is rotatably connected to the casing 1 through the swing vane 41 structure. Correspondingly, another side of oil net 4 activity joint is on casing 1, and the preceding side of oil net 4 passes through the buckle and activity joint is on casing 1 in this embodiment, and the matching is provided with the card hole on casing 1. In addition, a driving mechanism for driving the oil screen 4 to rotate is further arranged on the machine shell 1. Specifically, the driving mechanism comprises a motor 6, a transmission gear set 7 connected with the motor 6, a bracket 8 connected with the transmission gear set 7, and a connecting arm 9 connected between the bracket 8 and the oil screen 4. The connecting arms 9 can be arranged in two and are respectively arranged at two ends of the bracket 8, and the lower ends of the two connecting arms 9 are respectively connected with the left side and the right side of the oil net. Wherein the support 8 matches the frame construction on casing 1 upper portion and the sliding connection that can reciprocate is on casing 1, drive gear group 7 can turn into the action that reciprocates with the horizontal rotation action of motor 6, and then drive support 8 and reciprocate, corresponding linking arm 9 reciprocates and then drives oil net 4 and rotate, the buckle on the oil net 4 breaks away from the card hole on the casing 1, and then makes the medial surface of oil net 4 turn up, convenience of customers cleans the medial surface of oil net 4.
According to the control method of the oil fume filtering device, the oil fume adsorption capacity of the oil fume filtering device is represented by the ratio of the oil fume concentration variation quantity on the downstream side of the oil fume filtering device to the oil fume variation quantity on the upstream side of the oil fume filtering device, the method does not depend on historical data in the calculation process, the condition of acquiring the adsorption capacity of the oil fume filtering device in real time can be acquired, the influence of factors such as a filtering structure and a cooking state on oil dirt collection conditions is avoided, and the judgment on the adsorption capacity of the oil fume filtering device is more accurate.
The range hood applying the control method of the oil fume filtering device can timely and accurately acquire the adsorption capacity condition of the oil fume filtering device in the range hood, and further control the oil fume suction work of the range hood and the treatment work of the oil fume filtering device according to specific conditions.
Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the invention, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.
Claims (10)
1. A control method of an oil fume filtering device is characterized by comprising the following steps: when cooking is carried out, the range hood is controlled to carry out oil smoke suction work, the ratio of the oil smoke concentration variation quantity of the downstream side of the oil smoke filtering device to the oil smoke variation quantity of the upstream side of the oil smoke filtering device is calculated and obtained, and then the ratio is used as an oil smoke adsorption capacity parameter for judging the oil smoke adsorption capacity of the oil smoke filtering device, and further the oil stain state of the oil smoke filtering device is determined.
2. The control method of the oily fume filtering device according to claim 1, characterized in that: for one-time cooking, before cooking, detecting and acquiring first lampblack concentration data P10 on the upstream side of a lampblack filtering device and second lampblack concentration data P20 on the downstream side of the lampblack filtering device;
in the cooking process, controlling the range hood to work, and detecting and acquiring third oil smoke concentration data P1 on the upstream side of the oil smoke filtering device and fourth oil smoke concentration data P2 on the downstream side of the oil smoke filtering device;
calculating the oil smoke adsorption capacity parameter Y ═ P2-P20)/(P1-P10;
and determining the oil stain state of the oil smoke filtering device according to the Y.
3. The control method of the oily fume filtering device according to claim 2, characterized in that: and comparing Y with an oil smoke adsorption capacity threshold value Y0, if Y is less than or equal to Y0, judging that the adsorption capacity of the oil smoke filtering device is normal, and if Y is more than Y0, judging that the adsorption capacity of the oil smoke filtering device is weak.
4. The control method of the oily fume filtering device according to claim 2 or 3, characterized in that: and controlling related work control of cleaning the oil fume filtering device according to the oil stain state of the oil fume filtering device.
5. The control method of the oily fume filtering device according to claim 4, characterized in that: the related cleaning work of the lampblack filter device comprises cleaning reminding, self-cleaning and/or moving driving aiming at the lampblack filter device.
6. The utility model provides a range hood, includes casing (1) that has the oil smoke passageway, sets up the fan system in casing (1), its characterized in that: a control method using the oil smoke filtering device of any one of claims 1 to 5;
the oil smoke filtering device is characterized in that an oil smoke filtering device is arranged at an air inlet end of an oil smoke channel on the machine shell (1), a first oil smoke concentration sensor (2) is arranged on the upstream side of the oil smoke filtering device on the machine shell (1), and a second oil smoke concentration sensor (3) is arranged on the downstream side of the oil smoke filtering device on the machine shell (1).
7. The range hood of claim 6, wherein: the soot filter device comprises an oil screen (4) with flow apertures.
8. The range hood of claim 7, wherein: the oil fume filtering device also comprises a filter screen (5) arranged on the downstream side of the oil screen (4).
9. The range hood of claim 7, wherein: one side edge of the oil screen (4) is rotatably connected to the machine shell (1), and the other side edge of the oil screen (4) is movably clamped on the machine shell (1);
the machine shell (1) is also provided with a driving mechanism for driving the oil screen (4) to rotate.
10. The range hood of claim 9, wherein: the driving mechanism comprises a motor (6), a transmission gear set (7) connected with the motor (6), a support (8) connected with the transmission gear set (7) and a connecting arm (9) connected between the support (8) and the oil net (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111531144.6A CN114216143A (en) | 2021-12-14 | 2021-12-14 | Control method of oil fume filtering device and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111531144.6A CN114216143A (en) | 2021-12-14 | 2021-12-14 | Control method of oil fume filtering device and range hood |
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| CN114216143A true CN114216143A (en) | 2022-03-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04169727A (en) * | 1990-10-31 | 1992-06-17 | Matsushita Electric Ind Co Ltd | Smoke removal device |
| CN106839040A (en) * | 2017-03-29 | 2017-06-13 | 弗兰卡餐饮设备安装技术服务（中国）有限公司 | A kind of UV petticoat pipes easy to clean with upset structure |
| CN110925847A (en) * | 2019-12-30 | 2020-03-27 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN111380090A (en) * | 2018-12-28 | 2020-07-07 | 宁波方太厨具有限公司 | Oil smoke filter equipment and applied range hood that has device |
| CA3126439A1 (en) * | 2019-02-05 | 2020-08-13 | Derek W. Schrock | Cooking pollutant control methods devices and systems |
| CN111855524A (en) * | 2019-04-29 | 2020-10-30 | 宁波方太厨具有限公司 | Method for monitoring operation condition of oil fume purification equipment |
-
2021
- 2021-12-14 CN CN202111531144.6A patent/CN114216143A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04169727A (en) * | 1990-10-31 | 1992-06-17 | Matsushita Electric Ind Co Ltd | Smoke removal device |
| CN106839040A (en) * | 2017-03-29 | 2017-06-13 | 弗兰卡餐饮设备安装技术服务（中国）有限公司 | A kind of UV petticoat pipes easy to clean with upset structure |
| CN111380090A (en) * | 2018-12-28 | 2020-07-07 | 宁波方太厨具有限公司 | Oil smoke filter equipment and applied range hood that has device |
| CA3126439A1 (en) * | 2019-02-05 | 2020-08-13 | Derek W. Schrock | Cooking pollutant control methods devices and systems |
| CN111855524A (en) * | 2019-04-29 | 2020-10-30 | 宁波方太厨具有限公司 | Method for monitoring operation condition of oil fume purification equipment |
| CN110925847A (en) * | 2019-12-30 | 2020-03-27 | 宁波方太厨具有限公司 | Range hood and control method thereof |
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