CN112797456B - Range hood capable of automatically discharging greasy dirt - Google Patents
Range hood capable of automatically discharging greasy dirt Download PDFInfo
- Publication number
- CN112797456B CN112797456B CN202110025580.XA CN202110025580A CN112797456B CN 112797456 B CN112797456 B CN 112797456B CN 202110025580 A CN202110025580 A CN 202110025580A CN 112797456 B CN112797456 B CN 112797456B
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- Prior art keywords
- oil
- float
- position sensor
- range hood
- pumping device
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- 238000007599 discharging Methods 0.000 title claims abstract description 15
- 238000005086 pumping Methods 0.000 claims abstract description 55
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 230000001960 triggered effect Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000003517 fume Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 3
- 238000009434 installation Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a range hood capable of automatically discharging oil stains, which comprises: the machine body is provided with an oil collecting groove; the oil level detection device is arranged on the machine body and is used for detecting the oil level of the oil collecting groove and outputting detection electric signals; the oil pumping device is arranged on the machine body and is used for pumping oil stains of the oil collecting groove; the oil discharge pipeline is connected with an oil discharge end of the oil pumping device, and the oil pumping device discharges oil outwards through the oil discharge pipeline; the controller is arranged on the machine body, and the oil pumping device and the oil level detection device are electrically connected with the controller. The range hood can automatically drain oil stains in the oil collecting groove.
Description
Technical Field
The invention relates to the field of kitchen appliances, in particular to a range hood capable of automatically discharging oil stains.
Background
The existing range hood mainly collects oil stains through an oil collecting cover arranged on a machine body, and the oil collecting cover is usually detachable, so that after oil stains are collected in an oil collecting groove of the oil collecting cover, the oil stains are cleaned through disassembling the oil collecting cover. Because the capacity of the oil collecting tank is limited, the oil collecting cover needs to be detached periodically for cleaning, which is very troublesome, consumes a great deal of energy for cleaning each time, and has poor use experience.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the range hood capable of automatically discharging oil stains.
According to the embodiment of the invention, the range hood capable of automatically discharging oil stains comprises: the machine body is provided with an oil collecting groove; the oil level detection device is arranged on the machine body, and is used for detecting the oil level of the oil collecting groove and outputting detection electric signals; the oil pumping device is arranged on the machine body and is used for pumping oil stains of the oil collecting groove; the oil discharge pipeline is connected to the oil discharge end of the oil pumping device, and the oil pumping device discharges oil outwards through the oil discharge pipeline; and the controller is arranged on the machine body, and the oil pumping device and the oil level detection device are electrically connected with the controller.
The range hood capable of automatically discharging oil stains according to the embodiment of the invention has at least the following beneficial effects: when the range hood is installed and used, the oil drain pipeline can be connected to external sewage discharging equipment or device equipment for collecting and treating greasy dirt, and is a sewer. After the range hood is used for a period of time, the oil dirt in the oil collecting groove is gradually stored, the oil level in the oil collecting groove is detected through the oil level detection device, when the oil level reaches a preset height, the controller starts the oil pumping device according to the detection electric signal of the oil level detection device, and the oil dirt is discharged outwards through the oil pumping device and the oil discharge pipeline, so that the oil dirt in the oil collecting groove is discharged. The range hood can automatically drain oil dirt in the oil collecting tank, and is convenient to use.
According to some embodiments of the invention, the oil level detection device includes a float frame, a float, and a position sensor, the float frame is disposed on the body, the float is movably disposed on the float frame and can move up and down, the float is at least partially disposed in the oil sump, the position sensor is disposed on the body, the float can trigger the position sensor when moving up, and the position sensor is electrically connected with the controller.
According to some embodiments of the invention, the body comprises a main body part and an oil collecting cover, the oil collecting groove is arranged on the oil collecting cover, and the oil collecting cover is detachably connected to the main body part; the float frame with the float set up in the oil collecting cover, be provided with the support body on the host computer portion, position sensor set up in go up the support body, go up the activity on the support body and be provided with the moving part, go up the moving part and can reciprocate, the float is located go up the below of moving part, can push away when the float is up the moving part is up movable, upward be provided with trigger part on the moving part, upward move the part is up through trigger part is up when moving the position sensor triggers.
According to some embodiments of the invention, the position sensor is a photoelectric sensor, the photoelectric sensor is provided with a light emitter and a light receiver, a light path opposite-incidence space is arranged between the light emitter and the light receiver, and the triggering part can enter the light path opposite-incidence space to block a light path.
According to some embodiments of the invention, the float frame is a cage, and the float is accommodated in an inner space of the cage.
According to some embodiments of the invention, the upper frame body is provided with a mounting hole, and the upper moving part is movably arranged in the mounting hole and can move up and down.
According to some embodiments of the invention, the pumping end of the pumping device is in communication with the sump via a pumping line, one end of which is detachably connected to the oil collection cap.
According to some embodiments of the invention, the machine body is provided with a negative pressure chamber and a fume suction port communicated with the negative pressure chamber, the oil pumping device and the position sensor are accommodated in the negative pressure chamber, an oil blocking cover is arranged in the negative pressure chamber, and the oil pumping device and the position sensor are positioned in a space shielded by the oil blocking cover.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a partial cutaway view of an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is a schematic view of an embodiment of the present invention with the float moving upward to trigger the position sensor;
FIG. 5 is an exploded view of an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5;
fig. 7 is a schematic structural view of the oil level detection device of the present invention;
fig. 8 is a schematic diagram of the structure of the position sensor of the present invention when triggered.
Reference numerals:
the engine comprises an engine body 100, an oil collecting tank 101, a negative pressure chamber 102, an oil fume suction port 103, a main engine part 110, a main engine shell 111, a panel assembly 112, an oil receiving plate 113, an oil drain hole 114 and an oil collecting cover 120;
the oil level detection device 200, a float frame 210, an opening 211, a float 220, a position sensor 230, a light emitter 231, a light receiver 232, an upper frame 240, a mounting hole 241, a positioning notch 242, an upper movable member 250, a trigger 251, and a positioning portion 252;
pumping unit 300;
an oil discharge pipe 400, a first pipe 410, a second pipe 420, and a first pipe joint 430;
a pumping line 500, a third line 510, a fourth line 520, a second pipe joint 530, and a third pipe joint 540;
oil shield 600, card interface 610.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 2, a range hood capable of automatically discharging oil stains, comprising: a body 100 provided with an oil sump 101; an oil level detection device 200 provided to the body 100, the oil level detection device 200 being configured to detect the oil level of the oil sump 101 and output a detection electric signal; the oil pumping device 300 is arranged on the machine body 100 and is used for pumping oil stains of the oil collecting tank 101; the oil discharge pipeline 400 is connected to the oil discharge end of the oil pumping device 300, and the oil pumping device 300 discharges oil to the outside through the oil discharge pipeline 400; the controller is arranged on the machine body 100, and the oil pumping device 300 and the oil level detection device 200 are electrically connected with the controller.
When the above-mentioned range hood is installed and used, the oil drain pipe 400 may be connected to external sewage disposal equipment or equipment for collecting and treating oil stains, such as a sewer. After the range hood is used for a period of time, the oil dirt in the oil collecting groove 101 is gradually filled, the oil level in the oil collecting groove 101 is detected by the oil level detection device 200, when the preset height is reached, the controller starts the oil pumping device 300 according to the detection electric signal of the oil level detection device 200, and the oil dirt is discharged to the outside through the oil pumping device 300 and the oil discharge pipeline 400, so that the oil dirt in the oil collecting groove 101 is discharged. The range hood can automatically drain oil stains in the oil collecting groove 101, and is convenient to use.
In this embodiment, the oil pumping apparatus 300 may employ an oil pump; the controller can be a main control circuit of the range hood, and of course, the controller can also be independently arranged. The controller may be a control circuit with a microcontroller or a PLC industrial controller, etc.
Referring to fig. 3 to 4, in the present embodiment, the oil level detection device 200 includes a float frame 210, a float 220, and a position sensor 230, the float frame 210 is disposed on the body 100, the float 220 is movably disposed on the float frame 210 and can move up and down, the float 220 is at least partially disposed in the oil sump 101, the position sensor 230 is disposed on the body 100, the position sensor 230 can be triggered when the float 220 moves up, and the position sensor 230 is electrically connected to the controller. After the liquid level of the oil stain collected by the oil collecting groove 101 rises, the floater 220 is driven to move upwards, the position sensor 230 is triggered when the floater 220 moves upwards, the position sensor 230 generates a corresponding electric signal, and the controller detects the signal and controls the oil pumping device 300 to start oil discharge. In this embodiment, the float 220 may be made of a material having a density lower than that of the oil stain, or may be made of a hollow structure of other materials to be floatable.
Referring to fig. 5 to 6, in the present embodiment, the main body 100 includes a main body part 110 and an oil collecting cover 120, the main body part 110 is formed by combining a main body case 111 and a panel assembly 112, the oil collecting groove 101 is provided at the oil collecting cover 120, and the oil collecting cover 120 is detachably connected to the main body part 110. The oil collecting cover 120 is detachable, so that the oil sump 101 can be cleaned conveniently, and stubborn oil stains and solid deposits on the oil collecting tank are avoided from affecting the normal operation of the oil level detection device 200. Of course, in other embodiments, the oil collection cover 120 may be configured to be non-removable due to the ability to automatically drain oil. In this embodiment, an oil receiving plate 113 for receiving oil dirt is provided at a lower portion of the main body 110, and an oil drain hole 114 for allowing the oil dirt to flow into the oil sump 101 is provided at the oil receiving plate 113.
In this embodiment, two ends of the oil collecting cover 120 are provided with horizontally arranged plugging pieces, and the host portion 110 is correspondingly provided with plugging slots, so that the oil collecting cover 120 is detachably mounted on the host portion 110 through plugging cooperation of the plugging pieces and the plugging slots. Of course, in other embodiments, the oil collection cover 120 may be connected to the main body 110 by other removable connection structures, such as a hanging structure, a threaded fastener connection, and so on.
Referring to fig. 6 to 8, in the present embodiment, a float frame 210 and a float 220 are disposed on an oil collecting cover 120, an upper frame 240 is disposed on a main frame 110, a position sensor 230 is disposed on the upper frame 240, an upper movable member 250 is movably disposed on the upper frame 240, the upper movable member 250 can move up and down, the float 220 is located below the upper movable member 250, the upper movable member 250 can be pushed to move up when the float 220 moves up, a trigger portion 251 is disposed on the upper movable member 250, and the position sensor 230 is triggered by the trigger portion 251 when the upper movable member 250 moves up. Through the arrangement, the floater 220 indirectly triggers the position sensor 230 through the upper movable part 250, and the floater 220 and the upper movable part 250 can be separated from each other, so that the disassembly of the oil collecting cover 120 is not influenced, and the structure is ingenious.
In this embodiment, the upper frame 240 and the float frame 210 may be specifically disposed on the main unit 110 and the oil collecting cover 120 by welding, screwing, clamping, or the like.
In this embodiment, the position sensor 230 is a photoelectric sensor, the photoelectric sensor has a light emitter 231 and a light receiver 232, a light path opposite space is provided between the light emitter 231 and the light receiver 232, and the trigger portion 251 can enter the light path opposite space to block the light path. When the upper movable member 250 is pushed by the float 220 to move upward, the trigger portion 251 is inserted into the light path correlation space, thereby blocking the light path, the photoelectric sensor generates a changed electric signal, the electric signal is a detection electric signal, and the controller can know that the oil level has reached a predetermined height according to the detection electric signal, and at this time, the oil pumping device 300 is started again to perform oil discharging work. Of course, it is envisioned that in other embodiments, the position sensor 230 may have other configurations: such as a travel switch, a magnetic sensor (the trigger part 251 needs to be provided with a magnetic material), etc., but is not limited to the implementation provided in the present embodiment.
Referring to fig. 7 and 8, in the present embodiment, the float frame 210 is a cage, and the floats 220 are accommodated in the inner space of the cage. The float frame 210 may be formed by combining more than two members, and the floats 220 are disposed in the cage during the combination of the members. In the present embodiment, the cage has a bottom plate provided with an opening 211 exposing the bottom surface of the float 220, and the opening 211 communicates with the oil sump 101. Oil can enter under the bottom of the float 220 through the opening 211, thereby better lifting the float 220 when the oil level just rises.
Referring to fig. 8, in the present embodiment, an installation hole 241 is provided on the upper frame 240, and the upper movable member 250 is movably provided at the installation hole 241 and can move up and down. In this embodiment, the upper moving member 250 is provided with a positioning portion 252, the hole wall of the mounting hole 241 is provided with a positioning notch 242, and the positioning portion 252 is accommodated in the positioning notch 242, so that the upper moving member 250 has positioning in the circumferential direction around the hole axis of the mounting hole 241, and the upper moving member 250 does not rotate randomly when moving up and down, so that the position sensor 230 can be triggered more accurately. It is envisioned that in other embodiments, the upper moveable member 250 may be positioned within the mounting aperture 241 by other circumferential positioning structures.
Referring to fig. 6, in the present embodiment, the oil drain pipeline 400 includes a first pipeline 410 and a second pipeline 420, a first pipe joint 430 is provided on the main unit 110, the first pipe joint 430 is a two-way joint, one end of the first pipeline 410 is connected to the oil drain end of the oil pumping device 300 and the other end is connected to the first pipe joint 430, and one end of the second pipeline 420 is connected to the first pipe joint 430 and the other end is connectable to an external sewage apparatus or an apparatus for collecting and treating oil stains, such as a sewer.
Referring to fig. 6, in the present embodiment, the pumping end of the pumping unit 300 communicates with the oil sump 101 through a pumping pipe 500, and one end of the pumping pipe 500 is detachably connected with the oil collecting housing 120. By the arrangement, the normal disassembly of the oil collecting cover 120 can not be influenced. In this embodiment, the pumping unit 500 includes a third pipe 510 and a fourth pipe 520, the second pipe joint 530 is disposed on the main unit 110, the third pipe joint 540 is disposed on the oil collecting cover 120, the second pipe joint 530 and the third pipe joint 540 are two-way joints, one end of the third pipe 510 is connected to the pumping end of the pumping unit 300, the other end is connected to the second pipe joint 530, two ends of the fourth pipe 520 are connected to the second pipe joint 530 and the third pipe joint 540, the connection between the fourth pipe 520 and the third pipe joint 540 is detachable, and the internal channel of the third pipe joint 540 is communicated with the oil collecting tank 101. To avoid clogging of the pumping line 500 and the pumping unit 300 with solids, filtering devices, such as filter cotton, screens, etc., may be provided on the pumping line 500 and/or the pumping unit 300.
In this embodiment, the machine body 100 is provided with a negative pressure chamber 102 and a fume suction port 103 communicated with the negative pressure chamber 102, the oil pumping device 300 and the position sensor 230 are accommodated in the negative pressure chamber 102, an oil shielding cover 600 is arranged in the negative pressure chamber 102, and the oil pumping device 300 and the position sensor 230 are located in a space shielded by the oil shielding cover 600. The general range hood forms relative negative pressure in the negative pressure chamber 102 through the exhaust device, so that the oil smoke suction port 103 can suck oil smoke, condensed oil dirt drops in the negative pressure chamber 102, and the oil dirt in the negative pressure chamber 102 can be shielded through the oil shielding cover 600, so that the oil pumping device 300 and the position sensor 230 are kept clean, and the influence of the oil dirt is reduced. In this embodiment, the top wall of the oil shield 600 is inclined, so that the accumulation of oil stains on the top of the oil shield 600 can be reduced. In this embodiment, a clamping port 610 is further disposed on a side wall of the oil baffle 600, and the first pipeline 410 and the third pipeline 510 pass through the clamping port 610, so as to pass out of the oil baffle 600.
The range hood shown in the drawings is a side-draft range hood, but the structure of the embodiment is not limited to the side-draft range hood, and can be applied to other types of range hoods, such as a top-draft range hood (T-type range hood), a "7" type range hood (a range hood combining top-draft and side-draft), and the like.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (5)
1. Range hood capable of automatically discharging greasy dirt, which is characterized by comprising:
a body (100) provided with an oil sump (101);
an oil level detection device (200) provided to the body (100), the oil level detection device (200) being configured to detect the oil level of the oil sump (101) and to output a detection electric signal;
the oil pumping device (300) is arranged on the machine body (100) and is used for pumping oil stains in the oil collecting groove (101);
the oil discharge pipeline (400) is connected to the oil discharge end of the oil pumping device (300), and the oil pumping device (300) discharges oil outwards through the oil discharge pipeline (400);
the controller is arranged on the machine body (100), and the oil pumping device (300) and the oil level detection device (200) are electrically connected with the controller;
the oil level detection device (200) comprises a float frame (210), a float (220) and a position sensor (230), wherein the float frame (210) is arranged on the machine body (100), the float (220) is movably arranged on the float frame (210) and can move up and down, the float (220) is at least partially positioned in the oil collecting groove (101), the position sensor (230) is arranged on the machine body (100), the position sensor (230) can be triggered when the float (220) moves upwards, and the position sensor (230) is electrically connected with the controller; the machine body (100) comprises a main machine part (110) and an oil collecting cover (120), wherein the oil collecting groove (101) is arranged on the oil collecting cover (120), and the oil collecting cover (120) is detachably connected with the main machine part (110); the float frame (210) and the float (220) are arranged on the oil collecting cover (120), an upper frame body (240) is arranged on the main machine part (110), the position sensor (230) is arranged on the upper frame body (240), an upper movable part (250) is movably arranged on the upper frame body (240), the upper movable part (250) can move up and down, the float (220) is positioned below the upper movable part (250), the upper movable part (250) can be pushed to move up when the float (220) moves up, a triggering part (251) is arranged on the upper movable part (250), and the position sensor (230) is triggered by the triggering part (251) when the upper movable part (250) moves up; the float frame (210) is a cage body, and the floats (220) are accommodated in the inner space of the cage body; the cage body is provided with a bottom plate, an opening part (211) which enables the bottom surface of the floater (220) to be exposed is arranged on the bottom plate, the opening part (211) is communicated with the oil collecting groove (101), and oil dirt can enter the lower part of the bottom of the floater (220) through the opening part (211), so that the floater (220) is supported when the oil dirt liquid level just rises.
2. The range hood capable of automatically discharging oil stains according to claim 1, wherein the position sensor (230) is a photoelectric sensor, the photoelectric sensor is provided with a light emitter (231) and a light receiver (232), an optical path opposite-emission space is arranged between the light emitter (231) and the light receiver (232), and the trigger part (251) can enter the optical path opposite-emission space to block an optical path.
3. The range hood capable of automatically discharging oil stains according to claim 1, wherein the upper frame body (240) is provided with a mounting hole (241), and the upper movable member (250) is movably arranged in the mounting hole (241) and can move up and down.
4. The range hood capable of automatically discharging oil stains according to claim 1, wherein the oil pumping end of the oil pumping device (300) is communicated with the oil collecting tank (101) through an oil pumping pipeline (500), and one end of the oil pumping pipeline (500) is detachably connected with the oil collecting cover (120).
5. The range hood capable of automatically discharging oil stains according to claim 1, wherein the machine body (100) is provided with a negative pressure chamber (102) and an oil fume suction port (103) communicated with the negative pressure chamber (102), the oil pumping device (300) and the position sensor (230) are accommodated in the negative pressure chamber (102), an oil blocking cover (600) is arranged in the negative pressure chamber (102), and the oil pumping device (300) and the position sensor (230) are positioned in a space shielded by the oil blocking cover (600).
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CN209165520U (en) * | 2018-11-27 | 2019-07-26 | 广东万家乐厨房科技有限公司 | A kind of range hood |
CN209353429U (en) * | 2018-12-27 | 2019-09-06 | 何敏慎 | A kind of toilet drain valve water leakage fault alarm |
JP2020148575A (en) * | 2019-03-13 | 2020-09-17 | 三機工業株式会社 | Liquid level setting detector of oil level controller and oil level controller |
CN210345582U (en) * | 2019-06-10 | 2020-04-17 | 中宇京韵环保技术(北京)有限公司 | Indoor lampblack control device |
CN211561292U (en) * | 2019-07-04 | 2020-09-25 | 江西三鑫医疗科技股份有限公司 | Liquid path on-off feedback device for hemodialysis equipment |
CN210568734U (en) * | 2019-07-29 | 2020-05-19 | 九阳股份有限公司 | Range hood with oil mass reminding function |
CN211290194U (en) * | 2019-09-23 | 2020-08-18 | 九阳股份有限公司 | Oil anti-overflow alarm device for integrated stove |
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