WO2018120276A1

WO2018120276A1 - Range hood provided with movable component

Info

Publication number: WO2018120276A1
Application number: PCT/CN2017/000741
Authority: WO
Inventors: 叶丰; 张静; 申志贤; 茅忠群; 诸永定
Original assignee: 宁波方太厨具有限公司
Priority date: 2016-12-29
Filing date: 2017-12-20
Publication date: 2018-07-05
Also published as: CN108253477A; CN108253477B

Abstract

A range hood provided with a movable component comprises a decorative cover (1), a fan outer housing (2), a smoke collecting hood (3), and the movable component. The fan outer housing (2) is arranged inside the decoration cover (1), the movable component is located below the smoke collecting hood (3), and a mounting cavity is formed between the decorative cover (1) and the fan outer housing (2). A driving mechanism (6) capable of driving the movable component motion to move is arranged in the mounting cavity (5). The mounting cavity (5) is isolated from oily smoke, so that the driving mechanism (6) is always in an environment without oily smoke, and a lift rod (61) can maintain smooth movement, thereby prolonging the service life of the driving mechanism (6).

Description

Range hood with moving parts

Technical field

The present invention relates to a range hood, and more particularly to a range hood with moving parts.

Background technique

At present, in order to improve the effect of the range hood of the range hood, various types of range hoods with movable smoke guides have been invented. When the range hood is in operation, the guide body is driven by the drive mechanism to perform lifting movement or yaw movement, and then adjust The air inlet angle and air intake of the range hood. For example, the European-style range hood with automatic cigarette guide disclosed in the Chinese Utility Model Patent No. 201620042811.2 (publication number CN 205372692 U), the range hood includes a smoke guide plate and a fixed plate, and one side of the fixed plate The utility model is provided with a fixed guide rail, wherein the fixed guide rail is provided with a moving guide rail matched thereto, and a transmission rod is arranged beside the fixed guide rail, the transmission rod is opposite to the movement guide rail, and the motor is connected to the transmission rod on the other side of the fixed plate, and the movement is connected The lower end of the guide rail is provided with a fixing bracket, the fixing bracket is opposite to the smoke guiding plate, the connecting rod is provided with a connecting rod, the connecting rod is placed on the moving rail, and the driving rod and the connecting rod are driven by the motor, so that the moving rail is made up and down on the fixed rail. Exercise to control the movement of the smoke guide plate. Although the structure of the driving mechanism of the range hood for driving the lower movement of the smoke guide is relatively simple and the arrangement is reasonable, the guide plate driving mechanism of the range hood does not take into account the pollution of the soot environment, and after long-term use The components of the driving mechanism are easily stained with oil, so that the movement friction between the components is increased, which further makes it difficult for the smoke guiding plate to smoothly move up and down, and at the same time, the service life of the driving mechanism is also reduced. In addition, due to the presence of soot in the kitchen, other equipment that requires the use of lifting rods, such as drawer sterilizers, steam boxes with retractable panels, ovens, etc., have similar problems.

In addition, although the oil filter net of the double-layer oil filter net structure has been disclosed in the prior art, the spacing between the two oil filter nets cannot be adjusted after the installation of the oil filter nets. The oil filtering device and the range hood for a range hood disclosed in Chinese Utility Model Patent No. 201020541690.9 (publication No. CN 201836954 U), the oil filtering device has a two-layer structure including an outer layer The orifice filter and the wire mesh fixed on the inner side of the plate filter, the wire mesh is provided with a plurality of mesh holes, the plate hole filter net is provided with a plurality of air inlet holes, and all the air inlet holes of the plate hole filter net occupy the orifice plate filter net The total area is 50 to 56%. Although the filtering device can ensure sufficient contact between the oil fume and the oil filtering device, the soot separation can be maximized, and a certain air inlet area can be ensured, and the air volume and wind pressure loss are small, and the range hood adopting the filtering device has sufficient suction force. However, the spacing between the orifice filter and the screen of the filter device cannot be adjusted, that is, the inlet air area cannot be adaptively adjusted according to the change of the working condition of the range hood, and the degree of intelligence is low.

Summary of the invention

The technical problem to be solved by the present invention is to provide a range hood with movable parts that can effectively prevent the driving mechanism of the movable part from being contaminated by soot, in view of the above state of the art.

The technical solution adopted by the present invention to solve the above technical problem is: the range hood with moving parts, comprising a decorative cover, a fan cover, a hood and a movable part, wherein the fan cover is disposed inside the decorative cover, the movable part Provided under the hood, the utility model is characterized in that a mounting cavity is formed between the decorative cover and the fan cover, and a driving mechanism capable of driving the movement of the movable component is installed in the mounting cavity.

Preferably, the drive mechanism is capable of driving the movable member for a lifting motion or a yaw motion.

Preferably, the movable component is a smoke guide or a filter screen.

Preferably, a first through hole is formed in the hood, an output end of the driving mechanism has a lifting rod passing downward through the first through hole, and a lower end of the lifting rod is connected to the On the active part.

In order to drive the moving parts more smoothly, the lifting rods are provided in two and vertically, and the lower ends of the lifting rods are respectively connected to both sides of the movable part.

In order to form a floating seal effect on the gasket between the hood and the cover, a position corresponding to the first through hole is covered on the hood, and a cover is opened at a central portion of the cover. Having a second through hole aligned with the first through hole, so that an annular cavity surrounding the outer circumference of the first through hole and the second through hole is formed between the hood and the cover, in the ring a gasket is disposed in the cavity, and a third through hole aligned with the first hole and the second through hole is opened in a central portion of the gasket, and the lifting rod sequentially passes through the second through hole The three-way hole and the first through hole, the outer wall of the lifting rod is adjacent to or adjacent to the sealing pad, and the lifting rod and the sealing pad can slide relative to each other. After adopting the above structure, the soot can be effectively prevented from entering the installation cavity above the hood through the through hole in the hood and the cover plate, thereby further ensuring that the driving mechanism is always in a non-oily environment, so that the lifting rod can maintain smooth movement. And extend the life of the drive mechanism.

Further preferably, the gasket is restrained between the hood and the cover plate in the lifting direction of the lifting rod, and the gasket is left between the outer circumference of the sealing gasket and the inner cavity wall of the annular cavity. An offset active gap is created perpendicular to the lifting direction of the lifting rod.

In order to make the sealing pad offset with the lifting rod, the lifting rod is prevented from directly contacting the collecting hood. Preferably, the aperture of the first through hole is smaller than the aperture of the second through hole, and the aperture of the third through hole The aperture is smaller than the aperture of the first through hole, and the sealing pad is formed with a retaining ring extending into the first through hole at the edge of the third through hole, and the movable ring has an activity between the edge of the first through hole gap.

The gasket may have a plurality of limiting structures between the hood and the cover, one side of the gasket is opposite to the hood, and a spaced apart convex portion is formed on the other side of the gasket. The protrusion is opposite to or close to the cover plate. Thus, by providing spaced apart projections on the gasket, the friction between the gasket and the cover during the offset can be reduced.

The gasket may be made of a plurality of materials. As a preferred embodiment, the gasket is a plastic member or a rubber member, and a gap is formed between the edge of the third through hole of the gasket and the lifting rod. Since the plastic parts and the rubber parts are relatively hard, the gap between the sealing pad and the lifting rod is left, and the contact friction between the lifting rod and the sealing pad can be avoided, thereby making the lifting rod movement smoother. Further preferably, the width of the fitting gap is 0.08 mm to 0.12 mm.

In another preferred embodiment, the gasket is a felt member, and a rim of the third through hole of the gasket is in direct contact with the lifting rod. When the gasket is in direct contact with the lifting rod, not only the oil-proof effect is better, but also the felt material is soft. During the movement of the lifting rod relative to the gasket, the felt member can scrape off the oil adhering to the lifting rod, thereby The lifting rod moves more smoothly.

Compared with the prior art, the invention has the advantages that the driving mechanism for driving the movement of the movable component in the range hood is installed in the installation cavity between the fan cover and the decorative cover, since the installation cavity is isolated from the oil smoke, Therefore, the driving mechanism can always be in a non-oily environment, so that the lifting rod can maintain smooth movement and prolong the service life of the driving mechanism. In addition, the floating sealing structure disposed between the lifting rod and the through hole of the collecting hood can further prevent the soot from entering the installation cavity, thereby further improving the soot isolation effect.

DRAWINGS

1 is a schematic structural view of a range hood according to a first embodiment of the present invention;

Figure 2 is a schematic view showing the structure of the range hood shown in Figure 1;

Figure 3 is a schematic view showing the structure of the range hood shown in Figure 1 after the decorative cover is removed;

4 is a partial structural schematic view of the first embodiment of the present invention after the smoke guide plate is raised;

5 is a schematic partial structural view of a first embodiment of the present invention under a smoke guide plate;

6 is a schematic structural view of a collecting hood according to Example 1 of the present invention;

7 is a schematic view showing a mounting structure of a lifting rod according to Embodiment 1 of the present invention;

Figure 8 is a perspective exploded view of the mounting structure of the lifting rod shown in Figure 7;

Figure 9 is a cross-sectional view showing the mounting structure of the lifting rod shown in Figure 7;

Figure 10 is a schematic structural view of a range hood according to a second embodiment of the present invention;

Figure 11 is a cross-sectional view showing the structure of a second embodiment of the present invention.

detailed description

The invention will be further described in detail below with reference to the embodiments of the drawings.

Embodiment 1:

As shown in Figs. 1 to 6, a first preferred embodiment of the range hood with moving parts of the present invention is shown. The movable member in this embodiment is a smoke guide plate 41 capable of lifting movement. The range hood includes main components such as a decorative cover 1, a fan cover 2, a collecting hood 3, and a smoke guiding plate 41.

The fan cover 2 is disposed inside the decorative cover 1 , and the smoke guide plate 41 is disposed under the smoke collecting cover 3 . The decorative cover 1 and the fan cover 2 form a mounting cavity 5 separated from the soot, and the mounting cavity 5 is installed in the mounting cavity 5 . A drive mechanism 6 capable of driving the smoke guide plate 41 for lifting movement.

The driving mechanism 6 in this embodiment includes a lifting rod 61, a motor 62, a screw nut mechanism 63, a connecting plate 64 and a guide rail 65. The motor 62 and the screw nut mechanism 63 are mounted on the front side plate of the fan housing 2, and the lifting rod 61 constitutes the output end of the drive mechanism 6, and the lift rod 61 has two and is disposed on both sides of the fan cover 2. A first through hole 31 is opened at a corresponding position of the hood 3, the lifting rod 61 vertically passes through the first through hole 31 of the corresponding side, and the lower end of the lifting rod 61 is connected to the corresponding side of the smoke guiding plate 41, The upper end of the lifting rod 61 is mounted with a corresponding side portion of the connecting plate 64. The guide rails 65 are respectively installed on the left and right side plates of the fan cover 2, and the connecting plates 64 are U-shaped connecting plates. The side portions of the connecting plates 64 are respectively slidably engaged with the guide rails 65 on the corresponding sides, and the connecting plates 64 are respectively The middle is connected to the output end of the screw nut mechanism 63. During operation, the motor 62 drives the connecting plate 64 to move up and down along the guide rail 65 through the screw nut mechanism 63, thereby causing the lifting rod 61 and the smoke guiding plate 41 to move up and down synchronously.

As shown in FIG. 7 to FIG. 9, the cover hood 3 is covered with a cover plate 7 at a position corresponding to the first through hole 31, and a second through hole aligned with the first through hole 31 is opened at a central portion of the cover plate 7. 71, whereby an annular cavity 8 surrounding the outer circumference of the first through hole 31 and the second through hole 71 is formed between the hood 3 and the cover 7. A gasket 9 is mounted in the annular cavity 8 , and a third through hole 91 aligned with the first through hole 31 and the second through hole 71 is opened in a central portion of the gasket 9 , and the lifting rod 61 sequentially passes through the second through hole The hole 71, the third through hole 91 and the first through hole 31, the outer wall of the lifting rod 61 is in close contact with or adjacent to the gasket 9, and the lifting rod 61 and the gasket 9 are relatively slidable. After the gasket 9 is installed, both sides of the gasket 9 are restrained between the hood 3 and the cover 7, and a gasket 9 is left between the outer periphery of the gasket 9 and the inner wall of the annular cavity 8. An active gap that is offset back and forth in the horizontal direction.

In addition, the aperture of the first through hole 31 is smaller than the aperture of the second through hole 71, the aperture of the third through hole 91 is smaller than the aperture of the first through hole 31, and the sealing pad 9 is formed at the edge of the third through hole 91 to extend to the A retaining ring 92 in a through hole 31 has a movable gap between the retaining ring 92 and the edge of the first through hole 31. Thus, when the gasket 9 is displaced in the horizontal direction with the lifting rod 61, the lifting rod 61 can be prevented from directly contacting the collecting hood 3, so that the lifting rod 61 is not damaged during the movement.

In the present embodiment, the lower side surface of the gasket 9 is opposed to the hood 3, and the upper side surface of the gasket 9 is formed with a convex portion 93 spaced apart from each other, and the convex portion 93 is provided at the periphery of the gasket 9. The projection 93 preferably employs a bump which can directly abut the cover 7 or can be brought closer to the cover 7 to leave a small gap therebetween.

The gasket 9 in this embodiment can be made of a variety of different materials. For example, a relatively hard material such as a plastic member or a rubber member may be used. When the plastic member and the rubber member are used, a clearance is required between the edge of the third through hole 91 of the gasket 9 and the lifting rod 61. The gap d is generally set at d=0.08 mm to 0.12 mm, preferably d=0.1 mm, to avoid contact friction between the lifting rod 61 and the gasket 9, thereby making the lifting rod 61 move more smoothly. It is also possible to use a relatively soft material such as felt. When the felt member is used, the edge of the third through hole 91 of the gasket 9 is in direct contact with the lifting rod 61, and the oilproof effect is better, and the felt material is softer. During the up and down movement of the lifting rod 61, the felt member can scrape off the oil stain adhered to the lifting rod 61, thereby making the lifting rod 61 move more smoothly.

During operation, the lifting rod 61 moves up and down while driving the smoke guiding plate 41 to perform lifting movement. Under the influence of the accuracy of the driving mechanism, the lifting rod 61 will have a certain degree of deviation in the horizontal direction when moving up and down. After the above-mentioned oil-proof sealing structure in this embodiment, the vertical movement of the sealing gasket 9 can be restricted. And releasing the degree of freedom in the horizontal direction, so that the gasket 9 as a whole can be horizontally offset with the offset of the lifting rod 61, thereby achieving the effect of floating sealing, preventing the soot from passing through the collecting hood 3 and the cover 7 The through hole enters the mounting cavity 5, thereby ensuring that the drive mechanism 6 is always in a non-smoke environment, so that the lifting rod 61 can always move up and down smoothly.

Embodiment 2:

As shown in Figures 10 and 11, a second preferred embodiment of the range hood with moving parts of the present invention is shown. The difference between this embodiment and the first embodiment is that the movable component in the embodiment is an oil filter net 42 capable of lifting movement, and the oil filter net 42 is composed of an inner oil filter net 421 and an outer oil filter net 422. a two-layer structure, wherein the inner oil screen 421 is fixed to the hood 3 as a fixed oil net;

The lifting rod 61 of the driving mechanism 6 projects downwardly from the mounting cavity 5 and is connected to the outer oil filter screen 422. The outer oil filtering net 422 is a movable oil net and is driven by the lifting mechanism relative to the inner oil filtering net 421. Moving up and down, thereby changing the distance between the inner oil filter screen 421 and the outer oil filter screen 422, thereby adjusting the air volume change of the range hood, so that the range hood is always in an optimal working state.

The above description is only a preferred embodiment of the present invention, and it should be noted that various modifications and improvements can be made to the present invention without departing from the principles of the present invention, for example, the driving mechanism. In addition to driving the moving parts for the lifting movement, the moving parts can also be driven for the yaw movement, and for example, the two lifting rods of the driving mechanism can also drive the moving parts asynchronously, which are considered to be within the protection scope of the present invention.

Claims

A range hood with movable parts, comprising a decorative cover (1), a fan cover (2), a collecting hood (3) and a movable part, wherein the fan cover (2) is arranged inside the decorative cover (1) The moving part is disposed under the hood (3), characterized in that: a mounting cavity (5) is formed between the decorative cover (1) and the fan cover (2), in the mounting cavity (5) A drive mechanism (6) capable of driving the movement of the movable member is mounted.
The range hood with moving parts according to claim 1, wherein the movable member is a smoke guide plate (41) or an oil filter screen (42).
The range hood with movable parts according to claim 1 or 2, characterized in that: the first hood (31) is opened in the hood (3), and the driving mechanism (6) The output end has a lifting rod (61) that passes downward through the first through hole (31), and a lower end of the lifting rod (61) is coupled to the movable member.
The range hood with movable parts according to claim 3, characterized in that: the lifting rods (61) are provided in two and vertically, and the lower ends of the lifting rods (61) are respectively connected to the movable parts. On both sides.
The range hood with movable parts according to claim 3, wherein a position corresponding to the first through hole (31) on the hood (3) is covered with a cover plate (7), a central portion of the cover plate (7) is provided with a second through hole (71) aligned with the first through hole (31) so as to be between the collecting hood (3) and the cover plate (7) An annular cavity (8) is formed around the outer circumference of the first through hole (31) and the second through hole (71), and a gasket (9) is mounted in the annular cavity (8) in the gasket ( a central portion of 9) is opened with a third through hole (91) aligned with the first through hole (31) and the second through hole (71), and the lifting rod (61) sequentially passes through the second through hole a hole (71), a third through hole (91) and a first through hole (31), the outer wall of the lifting rod (61) is in close contact with or adjacent to the gasket (9), and the lifting rod (61) and the sealing The pad (9) is relatively slidable.
The range hood with movable parts according to claim 5, characterized in that the gasket (9) is restrained in the hood (3) and the cover in the lifting direction of the lifting rod (61) Between (7), between the outer circumference of the gasket (9) and the inner cavity wall of the annular cavity (8), the gasket (9) is biased in the direction perpendicular to the lifting direction of the lifting rod (61). Moved gaps.
The range hood with moving parts according to claim 6, wherein the first through hole (31) has a smaller aperture than the second through hole (71), and the third through hole (91) The aperture is smaller than the aperture of the first through hole (31), and the gasket (9) is formed at the edge of the third through hole (91) with a retaining ring (92) extending into the first through hole (31) There is a movable gap between the retaining ring (92) and the edge of the first through hole (31).
A range hood with movable parts according to claim 6, wherein one of the sides of the gasket (9) abuts the hood (3), and the other of the gasket (9) Formed with spaced-apart projections (93) on the sides, the projections (93) abut or close to the cover (7).
The range hood with moving parts according to claim 5, characterized in that the gasket (9) is a plastic member or a rubber member, and the edge of the third through hole (91) of the gasket (9) A matching gap is left between the lifting rod (61).
A range hood with movable parts according to claim 5, wherein said gasket (9) is a felt member, and a rim of said third through hole (91) of said gasket (9) is said The lifting rod (61) is in direct contact.