CN216079969U

CN216079969U - Fume exhaust fan

Info

Publication number: CN216079969U
Application number: CN202122048682.1U
Authority: CN
Inventors: 徐政; 王磊
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-03-18
Anticipated expiration: 2031-08-27

Abstract

The utility model relates to a range hood, which comprises a movable component, a fixed component, a movement mechanism for driving the movable component to lift relative to the fixed component, and a control circuit board electrically connected with the movement mechanism, wherein the movable component comprises a smoke collecting hood, the fixed component comprises a fan frame, the range hood further comprises a distance sensor for detecting the distance from an obstacle below, the distance sensor is telescopically embedded on the movable component through a driving mechanism, and the distance sensor and the driving mechanism are respectively and electrically connected with the control circuit board. This range hood can adjust reasonable decline distance in order to guarantee safe in utilizationly, can avoid the distance sensor who is used for apart from measuring to be polluted by the oil smoke simultaneously.

Description

Fume exhaust fan

Technical Field

The utility model relates to a range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

Currently, the range hoods commonly available on the market include a top suction type and a side suction type. The top-suction type range hood adopts an oil smoke rising principle, generates a negative pressure area right above a cooking bench, and sucks and exhausts naturally rising oil smoke generated during cooking. The side-suction type range hood has the advantages that the side-suction type range hood is thin in body and not easy to touch the head when in operation, and has a good range hood effect because the installation height is low and the negative pressure area is close to a smoke source in a cooking state with small oil smoke amount.

In order to reduce the negative pressure area or the air inlet and improve the oil smoke absorption effect, a common scheme is to set the structure to be a lifting type. For example, in the extractor hood disclosed in chinese patent application No. 202010404880.4, the fume collecting range is lifted to improve the fume suction effect. At that time, because the installation environment of the user home is different, the distance from the lower part of the range hood to the table top is also different when the range hood is installed, if the range hood is controlled to act according to the fixed descending distance, the range hood can collide with a cooker below, and further the cooker can be damaged or knocked over, and even personal injury can be caused. Therefore, for the range hood capable of lifting, how to reasonably lift the controller becomes the problem to be solved.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a range hood capable of adjusting a reasonable descending distance to ensure the use safety and simultaneously preventing a distance sensor for distance detection from being polluted by oil smoke in view of the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes movable part, fixed part, is used for driving the moving mechanism that movable part goes up and down for fixed part, the control circuit board who is connected with the moving mechanism electricity, movable part includes collection petticoat pipe, fixed part includes the fan frame, its characterized in that: the distance sensor is telescopically embedded on the movable part through a driving mechanism, and the distance sensor and the driving mechanism are respectively electrically connected with the control circuit board.

Preferably, the distance sensor is telescopically embedded in the movable part relative to the bottom surface of the movable part.

Preferably, the distance sensors include at least two.

Preferably, the distance sensors are arranged at intervals along the length direction of the movable member.

Preferably, the distance sensor includes two and is disposed at both left and right sides of the movable member.

Simple structure ground, actuating mechanism rotates the gear train of connection on the support frame including the fixed support frame that sets up on the movable part, the motor of being connected with the input gear transmission of gear train, the lead screw of being connected with the output gear transmission of gear train, the movably spacing installed part in the support frame of upper and lower direction, the installed part rotates with the lead screw to be connected, distance sensor sets up on the installed part, the motor is connected with the control circuit board electricity.

In order to better realize the guiding of the up-and-down movement, the support frame is provided with a guide rod extending up and down, and the mounting part is provided with a guide groove for placing the guide rod.

Preferably, the distance sensor is an infrared sensor.

Compared with the prior art, the utility model has the advantages that: the range hood can detect the distance between the movable component of the range hood and the obstacle below by using the distance sensor, so that the descending distance of the movable component can be controlled by the detected distance data, the movable component is prevented from colliding with the obstacle below, and the use safety of the lifting range hood is ensured. In addition, the distance sensor adopts a telescopic mounting structure, so that the distance sensor only extends out to detect the distance when a movable part of the range hood moves, the pollution of oil smoke or other pollutants to the range hood is effectively avoided, the working reliability of the range hood is ensured, and the service life of the range hood is also prolonged.

Drawings

Fig. 1 is a perspective view of a range hood in which a distance sensor is in a non-operating state according to an embodiment of the present invention.

Fig. 2 is a perspective view of the range hood in an operating state of the distance sensor according to the embodiment of the present invention.

Fig. 3 is a view showing an installation structure of the driving mechanism and the distance sensor in the embodiment of the present invention.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1, the range hood in the embodiment includes a movable component 1 and a fixed component 2, wherein the movable component 1 includes a smoke collecting hood, a fan housing disposed above the smoke collecting hood, and an oil cup disposed at the bottom of the back side of the smoke collecting hood. The movable part 1 comprises a fan frame arranged above the fume collecting hood and a fan system arranged in the fan frame. The cross section of the fan outer cover is in a U shape with an opening facing backwards and is wrapped outside the fan frame. The fan frame is fixed with the wall, the movable part 1 can do lifting movement relative to the fixed part 2, and the lifting top-suction type range hood is formed. Specifically, the movable member 1 is lifted and lowered with respect to the fixed member 2 by driving of the moving mechanism 3. The moving part can be driven up and down by various existing driving devices, for example, a moving mechanism in the Chinese patent of 'a range hood' with the application number of 202010404880.4 can be adopted.

The range hood also comprises a control circuit board, the setting position of the control circuit board is determined according to the specific space design of the range hood, and the control circuit board can be arranged in the fixed part 2.

The range hood further comprises a distance sensor 4 used for detecting the distance between the movable component 1 and an obstacle below, the distance sensor 4 is electrically connected with the control circuit board, detected distance data are transmitted to the control circuit board, and the control circuit board controls the descending driving distance of the movement mechanism 3 according to the distance data. The distance sensor 4 may be selected from various existing distance measuring sensor products, and for example, an infrared sensor including an infrared emitter and an infrared receiver may be used.

In order to meet the requirement that the range hood with long span realizes more accurate distance detection of distance data and more timely and fast finds out the obstacles below, the distance sensors 4 in the embodiment can be at least two, and the distance sensors 4 are distributed along the length direction of the movable part 1 at intervals. The distance sensors 4 in the present embodiment include two, and the two distance sensors 4 are respectively provided on the left and right sides of the movable member 1.

Because the lampblack absorber can produce a large amount of oil smoke in the course of the work, if the oil smoke covers distance sensor 4 and can lead to the condition that distance sensor 4 can't normally work, can also influence distance sensor 4's life simultaneously, then inlay distance sensor 4 on movable part 1 through actuating mechanism 5 telescopically in this embodiment, actuating mechanism 5 is connected with control circuit board electricity, actuating mechanism 5 drives distance sensor 4 and carries out the flexible action for movable part 1 under control circuit board's control like this.

In order to more conveniently detect the distance of the movable member 1 from an obstacle therebelow, a distance sensor 4 is embedded in the movable member 1 so as to be capable of telescoping relative to the bottom surface of the movable member 1. Specifically, a mounting chamber is provided inside the smoke collection hood, and the drive mechanism 5 is mounted in the mounting chamber of the smoke collection hood. The bottom surface of the smoke collecting hood is provided with an opening, the position of the distance sensor 4 matched with the opening is embedded in the mounting cavity of the smoke collecting hood, and then the telescopic action can be performed from the opening relative to the bottom surface of the smoke collecting hood under the driving of the driving mechanism 5.

The driving mechanism 5 comprises a supporting frame 51 fixedly arranged on the movable component 1, a gear set 52 rotatably connected on the supporting frame 51, a motor 53 in transmission connection with an input gear of the gear set 52, a screw rod 54 in transmission connection with an output gear of the gear set 52, and a mounting part 55 movably limited in the supporting frame 51 in the up-down direction. This support frame 51 is specifically fixed to be set up in the installation cavity of collection smoke cover, support frame 51 has the bottom plate of relative setting, the roof and connect the bottom plate, the curb plate between the roof, gear train 52 then rotates through the support column and connects on the roof, installed part 55 is a block structure, the spacing setting of this installed part 55 is between the roof and the bottom plate of support frame 51, lead screw 54 passes the roof and stretches into the space between roof and the bottom plate, installed part 55 then rotates the cover and establishes on lead screw 54 and realize the rotation on lead screw 54 and connect, distance sensor 4 connects on installed part 55 and lies in the outside of support frame 51, motor 53 is connected with the control circuit board electricity. In order to guide the vertical movement, the support frame 51 is provided with a guide rod 56 extending vertically, and the mounting member 55 is provided with a guide groove 551 into which the guide rod 56 is inserted. Under the limiting action of the guide rod 56 and the guide groove 551, the distance sensor 4 can be stably driven to move up and down.

When the range hood is used, if the control circuit board controls the movement mechanism 3 to work and drives the movable component 1 to move downwards, the control circuit board controls the driving mechanism 5 to drive the distance sensor 4 to extend out of the bottom surface of the movable component 1, so that the distance to an obstacle below is detected, and when the detected distance to the obstacle below reaches a set distance, the control circuit board controls the movement mechanism 3 to stop working, so that the movable component 1 is prevented from touching the obstacle below. At this moment, the control circuit board controls the driving mechanism 5 to drive the distance sensor 4 to retract into the movable part 1, so that the bottom of the distance sensor 4 is flush with the bottom surface of the movable part 1, the influence of the distance sensor 4 on oil smoke is avoided, and the appearance attractiveness is ensured.

According to the range hood, the distance between the range hood movable component 1 and the obstacle below can be detected by using the distance sensor 4, so that the descending distance of the movable component 1 can be controlled through the detected distance data, the obstacle below the movable component 1 is prevented from colliding, and the use safety of the lifting range hood is ensured. In addition, the distance sensor 4 adopts a telescopic mounting structure, so that the distance sensor 4 only extends out to detect the distance when the movable part 1 of the range hood moves, the pollution of oil smoke or other pollutants to the range hood is effectively avoided, the working reliability of the range hood is ensured, and the service life of the range hood is also prolonged.

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 utility model, 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

1. A range hood comprises a movable component (1), a fixed component (2), a moving mechanism (3) for driving the movable component (1) to lift relative to the fixed component (2), and a control circuit board electrically connected with the moving mechanism (3), wherein the movable component (1) comprises a smoke collecting hood, and the fixed component (2) comprises a fan frame, and is characterized in that: still including being used for detecting apart from distance sensor (4) of below barrier distance, distance sensor (4) are inlayed telescopically on movable part (1) through actuating mechanism (5), distance sensor (4), actuating mechanism (5) are connected with control circuit board electricity respectively.

2. The range hood of claim 1, wherein: the distance sensor (4) can be embedded in the movable component (1) in a telescopic mode relative to the bottom face of the movable component (1).

3. The range hood of claim 1, wherein: the distance sensors (4) comprise at least two.

4. The range hood of claim 3, wherein: the distance sensors (4) are distributed at intervals along the length direction of the movable component (1).

5. The range hood of claim 2, wherein: the distance sensors (4) are arranged on the left side and the right side of the movable component (1).

6. The range hood according to any one of claims 1 to 5, wherein: actuating mechanism (5) including fixed support frame (51) that sets up on movable part (1), rotate gear train (52) of connection on support frame (51), motor (53) of being connected with the input gear transmission of gear train (52), lead screw (54) of being connected with the output gear transmission of gear train (52), movably spacing installed part (55) in support frame (51) of upper and lower direction, installed part (55) rotate with lead screw (54) and are connected, distance sensor (4) set up on installed part (55), motor (53) are connected with control circuit board electricity.

7. The range hood of claim 6, wherein: the support frame (51) is provided with a guide rod (56) extending up and down, and the mounting piece (55) is provided with a guide groove (551) for placing the guide rod (56).

8. The range hood according to any one of claims 1 to 5, wherein: the distance sensor (4) is an infrared sensor.