CN111102614A

CN111102614A - Fume exhaust fan

Info

Publication number: CN111102614A
Application number: CN201811257502.7A
Authority: CN
Inventors: 陈益刚; 杨磊
Original assignee: Bo Xihua Electric Jiangsu Co Ltd; BSH Hausgeraete GmbH
Current assignee: Bo Xihua Electric Jiangsu Co Ltd; BSH Hausgeraete GmbH
Priority date: 2018-10-26
Filing date: 2018-10-26
Publication date: 2020-05-05
Anticipated expiration: 2038-10-26
Also published as: CN111102614B

Abstract

A range hood comprises a machine shell, a smoke collecting hood, a controller and a sensor protection device; the sensor protection device comprises a chamber enclosed by a chamber wall and a sensor arranged in the chamber; the chamber has an opening, a cover for closing the opening, the cover being rotatably fixed to one side of the chamber wall by a shaft under the control of a controller. The sensor is arranged in a cavity, the cover of the cavity is controlled by the controller, the sensor can be protected from being polluted in the kitchen environment, the service life of the sensor is prolonged, and the sensitivity of the sensor is guaranteed.

Description

Fume exhaust fan

Technical Field

The invention relates to the technical field of household appliances, in particular to a range hood.

Background

The application of air quality detection technology in kitchen environments is becoming more and more popular, especially in range hoods. Common air quality detection components such as PM2.5 sensors use laser or infrared to detect fine particles in the air. However, in a kitchen where the oil smoke environment is severe, the sensor is very susceptible, which may result in a reduction in detection accuracy and a reduction in the service life of the sensor.

There is no prior art solution to the above-mentioned problems.

Disclosure of Invention

The embodiment of the invention aims to provide a sensor protection device and a range hood comprising the same.

The invention provides a range hood, which comprises a machine shell, a smoke collecting hood, a controller and a sensor protection device, wherein the smoke collecting hood is arranged on the machine shell; the sensor protection device comprises a chamber enclosed by a chamber wall and a sensor arranged in the chamber; the chamber has an opening, a cover for closing the opening, the cover being rotatably fixed to one side of the chamber wall by a shaft under the control of a controller. The sensor is arranged in a cavity, the cover of the cavity is controlled by the controller, the sensor can be protected from being polluted in the kitchen environment, the service life of the sensor is prolonged, and the sensitivity of the sensor is guaranteed.

In one possible embodiment, the range hood further comprises a first electromagnetic end arranged at one side of the shaft and at one end of the cover deviated from the opening, and the weight of the first electromagnetic end is set to enable the cover to be in an opening position under the action of the gravity of the first electromagnetic end on the cover in a free state; and a second electromagnetic end controlled by a controller is arranged in the magnetic field action range of the first electromagnetic end, and the second electromagnetic end attracts the first electromagnetic end when being electrified, so that the cover rotates to a closed position. The scheme can control the opening and closing of the cover by utilizing the acting force of the magnetic field and the gravity, so that the sensor is prevented from being polluted.

In one possible embodiment, the second electromagnetic end is disposed above the first electromagnetic end.

In one possible embodiment, the controller is further configured to control the second electromagnetic terminal to be energized when a cooking event is detected.

In one possible embodiment, the sensor protection device is provided to the smoke collecting hood or the cabinet.

In one possible embodiment, the sensor protection device is provided at an intermediate position of the smoke collection hood or at an intermediate position of the cabinet.

In one possible embodiment, the sensor comprises an air quality detection sensor.

Drawings

FIG. 1 is a schematic structural diagram of a range hood according to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a sensor protection device according to an embodiment of the present invention;

FIG. 3 is a block diagram of a range hood in an embodiment of the invention;

fig. 4 is a schematic structural diagram of another sensor protection device in the embodiment of the invention.

Detailed Description

As shown in fig. 1 and 2, a range hood 10 includes a smoke collecting hood 101, a cabinet 102 on the smoke collecting hood 101, and a controller 103; and a sensor protection device 104.

Referring to fig. 3, the sensor protection device 104 includes a chamber 1040 surrounded by a chamber wall 1041, and a sensor 20 disposed in the chamber 1040, the chamber 1040 having an opening 1042, and a cover 1043 for closing the opening 1042, the cover 1043 being rotatably fixed to one side of the chamber wall 1041 by a shaft 1044 under the control of the controller 103.

In one embodiment, the opening 1042 may be located above the chamber 1040.

Through above-mentioned scheme, set up the sensor in a cavity and can protect the sensor to avoid receiving the pollution in the kitchen environment through the lid of controller control cavity, increase the life of sensor, ensure its sensitivity.

As shown in fig. 2, the shaft 1044 divides the cap 1043 into two parts, which are demarcated by the shaft 1044 and respectively include a first part 1043-1 and a second part 1043-2; the first member 1043-1 is located above the opening 1042 and used for closing the opening 1042; the second member 1043-2 is located at an end of the cap 1043 offset from the opening 1042.

In one embodiment, the perpendicular length of the edge of the second member 1043-2 parallel to the axis 1044 from the axis 1044 may be set to be less than that of the first member 1043-1.

In one embodiment, the sensor protection device 104 further includes a first electromagnetic tip 1045 and a second electromagnetic tip 1046.

In one embodiment, as shown in fig. 4, a first electromagnetic end 1045 may be provided on the second member 1043-2, and the weight of the first electromagnetic end 1045 is set to make the cover in an open position by its gravity acting on the cover 1043 in a free state; a second electromagnet end 1046 controlled by the controller is disposed in the magnetic field acting range of the first electromagnet end 1045, and the second electromagnet end 1046 attracts the first electromagnet end 1045 when being energized, so as to rotate the cover 1043 to the closed position, wherein the attraction force should be enough to overcome the gravity of the first electromagnet end 1045.

When a user starts cooking, the environment of the kitchen may be poor in an initial stage of cooking, and a cover of the sensor protection device needs to be closed to protect the sensor from contamination. At this time, the controller 103 controls the second electromagnetic terminal 1046 to be powered on, so that the first electromagnetic terminal 1045 is close to the second electromagnetic terminal 1046 under the attraction of the magnetic field, and drives the cover 1043 to rotate to the closed position. At this point, the sensor 20 may be deactivated.

In one embodiment, the controller 103 may control the second electromagnetic terminal 1046 to be energized when a cooking event is detected.

When the user finishes cooking, the second electromagnetic end 1046 is powered off, the first electromagnetic end 1045 is far away from the second electromagnetic end 1046 under the action of self gravity, and the cover 1043 is rotated to an open position. At this point, the sensor 20 may continue to operate.

In one embodiment, the second electromagnetic terminal 1046 can be disposed above or below the first electromagnetic terminal 1045, as long as it is within the magnetic field acting range of the first electromagnetic terminal 1045.

In one embodiment, the sensor protection device 104 may be disposed on the smoke collecting hood 101 or the cabinet 102.

In one embodiment, the sensor protection device 104 may be disposed at an intermediate position of the smoke collecting hood 101, and may be disposed at another position suitable for detecting the sensing data. This enables the data detected by the sensor to be more accurate.

In one embodiment, the sensor 20 comprises an air quality detection sensor, such as a PM2.5 sensor.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A range hood comprises a smoke collecting hood (101), a machine shell (102), a controller (103) and a sensor protection device (104); the sensor protection device (104) comprises a chamber (1040) enclosed by a chamber wall (1041), and a sensor (20) disposed within the chamber (1040); the device is characterized in that the chamber (1040) is provided with an opening (1042), a cover (1043) for closing the opening (1042), and the cover (1043) is controlled by a controller (103) to be rotationally fixed on one side of the chamber wall (1041) through a shaft (1044).

2. A range hood as claimed in claim 1, further comprising a first electromagnetic tip (1045) provided at one side of said shaft (1044) and at an end of said cover (1043) offset from said opening (1042) and wherein the weight of said first electromagnetic tip (1045) is arranged to act on said cover (1043) by its weight in a free state to place said cover (1043) in an open position; a second electromagnetic end (1046) controlled by a controller (103) is arranged in the magnetic field action range of the first electromagnetic end (1045), and the second electromagnetic end (1046) attracts the first electromagnetic end (1045) when being electrified so that the cover (1043) rotates to a closed position.

3. A range hood according to claim 2, characterized in that said second electromagnetic end (1046) is arranged above or below said first electromagnetic end (1045).

4. A range hood as claimed in claim 2, characterized in that the controller (103) is further configured to control the second electromagnetic terminal (1046) to be energized upon detection of a cooking event.

5. A range hood according to claim 1, characterized in that the sensor protection device (104) is arranged at the fume collecting hood (101) or the cabinet (102).

6. A hood as set forth in claim 5, characterized in that the sensor guard (104) is provided at an intermediate position of the hood collection (101) or at an intermediate position of the cabinet (102).

7. A range hood as claimed in claim 1, characterized in that said sensor (20) comprises an air quality detection sensor.