Range hood

Abstract

A range hood comprises a range hood main body which is provided with a fixed part and a movable part capable of moving relative to the fixed part, and the movable part is provided with a back face facing a wall; the walking wheel is arranged on the back surface of the movable part of the range hood main body in a manner of rotating around the central axis of the walking wheel; the rollers are arranged on the periphery of the central axis of the walking wheel at intervals in the circumferential direction, each roller is restrained on the walking wheel in the mode that the roller can rotate around the first axis of the roller, an acute angle is formed between the extending direction of the first axis and the extending direction of the central axis of the walking wheel, and all the rollers are arranged in the anticlockwise or clockwise rotating direction as a whole; at least part of the peripheral wall of each roller is located outside the corresponding walking wheel and used for making contact with the wall. The driving mechanism is arranged on the movable part, and the output end of the driving mechanism acts on the walking wheels so as to drive the walking wheels to rotate. Compared with the prior art, the range hood has the advantages that the movable part of the range hood main body can be driven to move along the non-linear path, and the movable part moving along the non-linear path can adapt to various use scenes.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and in particular relates to a range hood. Background Art

[0002] In the existing range hoods, in order to achieve height adjustment, the range hood body is generally designed to have a fixed portion and a movable portion that can move up and down relative to the fixed portion, and the position of the movable portion is adjusted by moving up and down.

[0003] Specifically, the Chinese utility model patent "Ranger Hood" with patent number 202322245644.4 and authorization announcement number CN220506872U includes: a machine body, which defines a smoke inlet duct and an air inlet for external smoke to enter the smoke inlet duct; a fan system; a fan box, which has a accommodating chamber for accommodating the fan system, the accommodating chamber is fluidly connected to the smoke inlet duct, and the fan box is arranged on the machine body in a manner that it can move up and down relative to the machine body and its position is adjustable. Since the fan box can be moved up and down relative to the machine body, when installing the range hood, the height position of the fan box can be adjusted according to the actual layout of the cabinet to meet the installation requirements of different installation scenarios, ensuring the convenience of installing the range hood.

[0004] The movable parts such as the housing of the existing range hood can generally only move up and down relative to the fixed part. This is not applicable to some usage scenarios, such as when the position of the range hood needs to be adjusted according to the cooking conditions of the pots on the stove. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood suitable for a variety of usage scenarios in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a range hood, comprising:

[0007] The range hood body comprises a fixed portion and a movable portion movable relative to the fixed portion, wherein the movable portion has a back side facing the wall;

[0008] It is characterized by also including:

[0009] A running wheel is arranged on the back side of the movable part of the range hood body in a manner that it can rotate around its own central axis;

[0010] Rollers are arranged at intervals along the circumferential direction on the periphery of the central axis of the walking wheel, each roller is constrained to the walking wheel in a manner of being able to rotate around its own first axis, and the extension direction of the first axis is arranged at an acute angle to the extension direction of the central axis of the walking wheel, and each roller is arranged in a counterclockwise or clockwise rotation direction as a whole; at least a part of the peripheral wall of each roller is located outside the walking wheel for contacting the wall;

[0011] The driving mechanism is arranged on the movable part of the range hood body, and the output end of the driving mechanism acts on the travel wheel to drive the travel wheel to rotate.

[0012] When in use, the driving mechanism drives the traveling wheel to rotate around its own central axis, so that each roller rotates around the central axis of the traveling wheel. While rotating, the peripheral wall of each roller contacts the wall in turn, so that the roller contacting the wall can rotate around its own first axis. Since the extension direction of the first axis is arranged at an acute angle to the extension direction of the central axis of the traveling wheel, the rotation of the roller can drive the movable part of the range hood body to move in an inclined direction rather than straight up or straight down, thereby being able to adapt to a variety of usage scenarios.

[0013] Preferably, the side of the range hood body facing the user is the front side, and the center axis of the running wheel extends left and right; the acute angle is 30-60°.

[0014] Preferably, the travel wheel, the roller on the travel wheel and the driving mechanism form a travel mechanism, and there are at least two groups, which are arranged at intervals on the back side of the movable part of the range hood body; the acute angle is 45°.

[0015] Preferably, the two groups of walking mechanisms are the first walking mechanism and the second walking mechanism, which are arranged at intervals in the horizontal direction, and the rollers in the first walking mechanism are arranged in a clockwise rotation direction, and the rollers in the second walking mechanism are arranged in a counterclockwise rotation direction. The two groups of walking mechanisms arranged at intervals in the horizontal direction can improve the stability of the movable part of the range hood body when walking; and by controlling the rotation direction of the walking wheels in the two groups of walking mechanisms, multi-directional movement can be achieved.

[0016] Preferably, the first walking mechanism and the second walking mechanism are grouped as one, and there are two groups, which are arranged at intervals up and down to form a rectangular array as a whole, and the rotation directions of the rollers in the two groups of walking mechanisms on the diagonal lines of the rectangle are the same.

[0017] In the above solution, preferably, the driving mechanism is arranged to drive the running wheel to rotate in a clockwise or counterclockwise direction, so as to control the rotation direction of the running wheel.

[0018] Preferably, the driving mechanism is a motor.

[0019] Furthermore, the travel wheel includes a central rotating shaft having the above-mentioned central axis, and end plates arranged at both ends of the central rotating shaft. Each roller is located at the periphery of the central rotating shaft, and both ends of each roller are rotatably supported on their respective corresponding end plates.

[0020] Furthermore, there are at least three rollers, which are arranged at equal intervals along the circumferential direction on the periphery of the central axis of the traveling wheel.

[0021] In the above schemes, preferably, the range hood body includes an upper box body as the above-mentioned fixed part, a lower box body located below the upper box body as the above-mentioned movable part, and a deformable hose connected between the two, the lower box body has an air inlet, the upper box body has an air outlet, and the lower box body and the upper box body are connected through the hose;

[0022] The upper box is fixed relative to the wall, and the walking wheels, rollers and driving mechanism are arranged on the back of the lower box so that the lower box can move relative to the upper box.

[0023] Compared with the prior art, the advantages of the utility model are: the driving mechanism drives the traveling wheel to rotate around its own central axis, so that each roller rotates around the central axis of the traveling wheel. While rotating, the peripheral wall of each roller contacts the wall in turn, so that the roller contacting the wall can rotate around its own first axis. Since the extension direction of the first axis is arranged at an acute angle to the extension direction of the central axis of the traveling wheel, the rotation of the roller can drive the movable part of the range hood body to move along a non-straight path, thereby being able to adapt to a variety of usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0025] Figure 2 It is a structural schematic diagram of another viewing angle of the embodiment of the utility model;

[0026] Figure 3 It is a partial structural schematic diagram of an embodiment of the utility model;

[0027] Figure 4 It is a cross-sectional view of the walking mechanism in the embodiment of the utility model;

[0028] Figure 5 It is a usage status diagram of each group of walking mechanisms in the embodiment of the utility model. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 5As shown, it is a preferred embodiment of a range hood of the utility model, and the range hood comprises a range hood body 1 and a walking mechanism.

[0031] Among them, the side of the range hood body 1 facing the user is the front side, and the range hood body 1 has an upper box body 11, a lower box body 12 located below the upper box body 11, and a deformable hose 13 connected therebetween. The upper box body 11 is fixed relative to the wall and has an air outlet 111, and the lower box body 12 has a front side with an air inlet 121 and a back side 10 facing the wall. The lower box body 12 can move relative to the upper box body 11, and the hose 13 connects the lower box body 12 and the upper box body 11, so that oil smoke can enter from the air inlet 121 of the lower box body 12 and be discharged from the air outlet 111 of the upper box body 11.

[0032] There are four groups of the above-mentioned walking mechanisms, which are arranged in a rectangular array on the back side 10 of the lower box body 12 and are used to drive the lower box body 12 to move.

[0033] Specifically, the four groups of walking mechanisms are respectively a first walking mechanism, a second walking mechanism, a third walking mechanism, and a fourth walking mechanism. The first walking mechanism and the second walking mechanism are arranged at intervals in the horizontal direction, the third walking mechanism is located directly below the first walking mechanism, and the fourth walking mechanism is located directly below the second walking mechanism and is arranged at intervals in the horizontal direction between the third walking mechanism.

[0034] At the same time, each group of walking mechanisms includes walking wheels 2, rollers 3 and driving mechanisms. The walking wheels 2 include a central rotating shaft 21 extending left and right (the central axis of the central rotating shaft 21 is the central axis 20 of the walking wheels 2), and circular end plates 22 arranged at both ends of the central rotating shaft 21. The central rotating shaft 21 is arranged on the back side 10 of the lower box body 12 in a manner that it can rotate around its own central axis. There are multiple rollers 3, which are arranged at equal intervals along the circumferential direction on the periphery of the central rotating shaft 21 of the walking wheels 2. The two ends of each roller 3 are supported on the corresponding end plates 22 in a manner that it can rotate around its own first axis 30, and the extension direction of the first axis 30 is arranged at an angle of 45° with the extension direction of the central axis 20 of the walking wheels 2. The rollers 3 are arranged in a counterclockwise or clockwise rotation direction as a whole; at least a part of the peripheral wall 31 of each roller 3 is located outside the walking wheel 2 for contacting the wall. The driving mechanism is a motor disposed on the back of the lower box body 12 , and the output end of the motor acts on the running wheel 2 to drive the running wheel 2 to rotate forward or reverse.

[0035] In this embodiment, the rollers 3 in the first walking mechanism are arranged in a clockwise rotation direction, the rollers 3 in the second walking mechanism are arranged in a counterclockwise rotation direction, the rollers 3 in the third walking mechanism are arranged in a counterclockwise rotation direction, and the rollers 3 in the fourth walking mechanism are arranged in a clockwise rotation direction.

[0036] When the motor drives the travel wheel 2 to move upward on the wall, the resultant force of the wall on the travel wheel 2 is downward, which is decomposed into a force in the same direction as the first axis of the roller and a force in the tangential direction to the peripheral wall 31 of the roller on each roller. Since the roller 3 can rotate on itself, the tangential force will be greatly reduced in the rolling friction of the roller 3, and finally there will be a force in the same direction as the first axis of the roller. When the forces on the travel wheels in the four travel mechanisms cancel each other out and combine, a resultant force in a certain direction will be generated. When in use, the direction of rotation of each travel wheel 2 is changed to generate resultant forces in different directions, thereby driving the lower box 12 to move in different directions. Since the upper and lower boxes are connected by a retractable hose 13, the upper box 11 can remain stationary. The specific relationship between the direction of rotation of the travel wheel and the direction of movement of the lower box is as follows: Figure 5 As shown: When the motor drives the four running wheels 2 to move upward on the wall, the lower box 12 can move upward relative to the wall. For details, please refer to Figure 5 a; When the motor drives the two sets of running wheels of the running mechanism on one diagonal line of the rectangle to move upward on the wall, and the two sets of running wheels of the running mechanism on the other diagonal line of the rectangle to move downward on the wall, the lower box 12 can move horizontally. For details, please refer to Figure 5 b. In this embodiment, only two sets of running wheels in the running mechanism can be driven to rotate to drive the lower box 12 to move. Figure 5 c, 5d, 5f, Figure 5 c can drive the lower box 12 to move obliquely, Figure 5 d. 5f can drive the lower box 12 to move along a curved path.

[0037] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A range hood, comprising: A range hood body (1) comprising a fixed portion and a movable portion movable relative to the fixed portion, wherein the movable portion has a back surface (10) facing the wall; Features Also included are: A running wheel (2) is arranged on the back side (10) of the movable part of the range hood body (1) in a manner that it can rotate around its own central axis (20); Rollers (3) are arranged at intervals along the circumference on the periphery of the central axis (20) of the running wheel (2), each roller (3) is constrained to the running wheel (2) in a manner that it can rotate around its own first axis (30), and the extension direction of the first axis (30) is arranged at an acute angle to the extension direction of the central axis (20) of the running wheel (2), and each roller (3) is arranged in a counterclockwise or clockwise rotation direction as a whole; at least a part of the peripheral wall (31) of each roller (3) is located outside the running wheel (2) for contacting the wall; The driving mechanism is arranged on the movable part of the range hood body (1), and its output end acts on the running wheel (2) to drive the running wheel (2) to rotate.

2. The range hood according to claim 1, characterized in that: The side of the range hood body (1) facing the user is the front side, and the central axis (20) of the running wheel (2) extends left and right; the acute angle is 30 to 60 degrees.

3. The range hood according to claim 2, characterized in that: The walking wheel (2), the roller (3) located on the walking wheel (2) and the driving mechanism form a walking mechanism, and there are at least two groups, which are arranged at intervals on the back side (10) of the movable part of the range hood body (1); the acute angle is 45 degrees.

4. The range hood according to claim 3, characterized in that: The two groups of walking mechanisms are a first walking mechanism and a second walking mechanism, which are arranged at intervals in the horizontal direction, and the rollers (3) in the first walking mechanism are arranged in a clockwise rotation direction, while the rollers (3) in the second walking mechanism are arranged in a counterclockwise rotation direction.

5. The range hood according to claim 4, characterized in that: The first walking mechanism and the second walking mechanism are formed into a group, and there are two groups, which are arranged at intervals up and down to form a rectangular array as a whole, and the rotation directions of the rollers (3) in the two groups of walking mechanisms on the diagonal lines of the rectangle are the same.

6. The range hood according to claim 1, characterized in that: The driving mechanism is arranged to be able to drive the running wheel (2) to rotate in a clockwise or counterclockwise direction.

7. The range hood according to claim 6, characterized in that: The driving mechanism is a motor.

8. The range hood according to claim 1, characterized in that: The walking wheel (2) comprises a central rotating shaft (21) having the above-mentioned central axis (20), and end plates (22) arranged at both ends of the central rotating shaft (21); each roller (3) is located on the periphery of the central rotating shaft (21), and both ends of each roller (3) are rotatably supported on the corresponding end plates (22).

9. The range hood according to claim 1, characterized in that: There are at least three rollers (3) which are arranged at equal intervals along the circumferential direction on the periphery of the central axis (20) of the traveling wheel (2).

10. The range hood according to any one of claims 1 to 9, characterized in that: The range hood body (1) comprises an upper box (11) as the above-mentioned fixed part, a lower box (12) located below the upper box (11) as the above-mentioned movable part, and a deformable hose (13) connected between the two, the lower box (12) having an air inlet (121), the upper box (11) having an air outlet (111), and the lower box (12) and the upper box (11) are connected via the hose (13); The upper box (11) is fixed relative to the wall, and the walking wheels (2), rollers (3) and driving mechanism are arranged on the back side (10) of the lower box (12) so that the lower box (12) can move relative to the upper box (11).

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