WO2018176969A1

WO2018176969A1 - Exhaust hood

Info

Publication number: WO2018176969A1
Application number: PCT/CN2018/000103
Authority: WO
Inventors: 何立博; 徐群浪; 茅忠群; 诸永定; 申志贤
Original assignee: 宁波方太厨具有限公司
Priority date: 2017-04-01
Filing date: 2018-03-15
Publication date: 2018-10-04
Also published as: CN107339726B; CN107339726A

Abstract

An exhaust hood, comprising a housing (S), a smoke collection cover (3), a grease filter, a smoke guide plate (6) and a drive mechanism, the grease filter being a dual-layer structure composed of an inner grease filter (4) and an outer grease filter (5), an air inlet channel (11) being formed between the smoke guide plate (6) and the smoke collection cover (3), one of the inner grease filter (4) and the outer grease filter (5) being a movable grease filter, the other being a fixed grease filter, the drive mechanism driving the smoke guide plate (6) and the movable grease filter to move in a synchronous manner, so as to simultaneously alter the size of the air inlet channel (11), and a gap between the movable grease filter and the fixed grease filter. The exhaust hood is suitable for use by users in different working conditions, and noise and air volume are effectively balanced.

Description

Range hood

Technical field

The invention relates to a range hood.

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 (authorization bulletin number CN 205372692 U), the range hood includes a smoke guide plate and a fixed plate, and the fixed plate The side is provided with a fixed guide rail, and the fixed guide rail is provided with a moving guide rail corresponding thereto, and a transmission rod is arranged beside the fixed guide rail, the transmission rod is opposite to the motion guide rail, and the motor is connected to the transmission rod on the other side of the fixed plate, The lower end of the moving 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 on the fixed rail Move up and down 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.

The oil filter net of the double-layer oil filter net structure has been disclosed in the prior art, but after the oil filter nets are installed, the spacing between the two oil filter nets cannot be adjusted. The oil filtering device and the range hood for a range hood disclosed in the Chinese Utility Model Patent No. 201020541690.9 (Announcement No. CN 201836954 U), the oil filtering device has a two-layer structure, including an outer layer The orifice plate filter and the wire mesh fixed on the inner side of the plate filter screen, 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 the area of all the air inlet holes of the plate hole filter net accounts for the hole plate filter. The total area of the net 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. For range hoods with double-layer oil filter screens, it is necessary to balance the noise and air volume. If the distance between the double-layer oil filter nets is small, the system resistance is relatively large, the air volume is small, and the noise is small. However, for some outlet back pressure In a higher environment, it is necessary to reduce the system resistance and increase the gap to effectively inhale the soot.

In summary, the driving mechanism can drive the smoke guide plate to perform the lifting movement to adjust the air intake amount of the range hood, and the air volume can also be adjusted by adjusting the gap between the double oil filtering nets. However, the existing range hood There is no consideration of how to achieve linkage between the smoke guide and the oil filter to better balance noise and air volume.

Summary of the invention

The technical problem to be solved by the present invention is to provide a range hood between the air guiding plate and the collecting hood and the gap between the double oil filtering nets to be adjusted synchronously.

The technical solution adopted by the present invention to solve the above technical problem is: the range hood includes a casing, a collecting hood, an oil filter net and a smoke guiding plate, and the collecting hood is disposed under the casing, The oil filter net is disposed at the air inlet of the hood, the oil filter net is a double layer structure composed of an inner oil filter net and an outer oil filter net, and the smoke guide plate is disposed on the outer oil filter net Below, an air inlet passage is formed between the smoke guiding plate and the collecting hood, and is characterized in that: a driving mechanism is further included, and one of the inner oil filtering net and the outer oil filtering net is active. The oil filter net, another oil filter net is a fixed oil filter net, the driving mechanism can drive the smoke guide plate and the movable oil filter net to move synchronously, thereby simultaneously changing the size of the air inlet passage and the movable oil filter net Clearance to the fixed oil filter screen.

Preferably, the inner oil filter net is a fixed oil filter net fixed on the collecting hood, and the outer oil filter net forms an active connection with the inner oil filter net to form a movable oil filter net. Of course, the outer oil filter net can also be fixed on the hood to form a fixed oil filter net, and accordingly the inner oil filter net constitutes a movable oil filter net.

There may be a plurality of movable connection structures between the inner layer of oil filter net and the outer layer of oil filter net. Preferably, mounting holes are formed at both sides of the inner layer of the oil filter net, and the outer layer of the oil filter net A guide post is mounted at the corresponding position, and the guide post passes upward through the corresponding mounting hole, and the top of the guide post is exposed upward to the inner oil filter net.

Further preferably, a spring and a collar are mounted on the top of the guide post, the spring being constrained between the collar and the inner filter screen.

There may be a plurality of driving mechanisms, and preferably, the driving mechanism is a push rod mechanism provided inside the casing.

Preferably, the casing comprises a fan cover and a decorative cover disposed outside the fan cover, the fan cover and the trim cover form a mounting cavity, and the push rod mechanism is installed in the mounting cavity, The driving output end of the push rod mechanism projects downwardly from the mounting cavity and is connected to the smoke guiding plate, and the push rod mechanism drives the outer filter oil net to move synchronously while driving the movement of the smoke guiding plate. After the push rod mechanism is hidden in the above installation cavity, the push rod mechanism can be prevented from being contaminated by the soot, and the push rod mechanism can work smoothly.

Further preferably, the driving output end of the push rod mechanism comprises two lifting rods, the lifting rods are respectively located at two sides of the fan cover, and the lower end of the lifting rod passes through the collecting hood and is fixed at the a first bump is disposed on both sides of the outer oil filter net, and a second bump that is always overlapped on the first bump is disposed on the inner side of the lift rod.

The push rod mechanism can have various structures. Preferably, the push rod mechanism further includes a motor, a transmission mechanism, a guide rail and a U-shaped connecting plate, and the transmission mechanism is mounted on the fan cover and driven by the motor. The lifting rod is disposed on two sides of the fan cover, and the U-shaped connecting plate is connected between the lifting rod and the transmission mechanism, and the guiding rails are at least two and are respectively installed on two sides of the fan housing, the transmission The mechanism drives the U-shaped connecting plate to move up and down along the guide rail, thereby causing the lifting rod to perform synchronous lifting movement.

Compared with the prior art, the invention has the advantages that the range hood can drive the smoke guide plate and the movable oil filter net to move synchronously, thereby simultaneously changing the size and activity of the air inlet passage between the smoke guide plate and the collecting hood. The gap between the oil filter net and the fixed oil filter net, so that the linkage between the smoke guide plate and the oil filter net can be applied to users of different working conditions, effectively balancing noise and air volume, and greatly improving the user experience. In addition, the adjustment movement of the smoke guide plate and the oil filter net can be realized by a set of driving mechanism, which can reduce the cost.

DRAWINGS

1 is a schematic structural view of an embodiment of the present invention;

2 is a schematic structural view of another angle according to an embodiment of the present invention;

3 is a schematic diagram of an internal structure of an embodiment of the present invention;

4 is a schematic diagram of an internal structure of an embodiment of the present invention;

Figure 5 is an enlarged schematic view of a portion A of Figure 4;

Figure 6 is a schematic view showing the structure of another angle of Figure 5.

detailed description

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

As shown in FIG. 1 to FIG. 6, the range hood in this embodiment includes a casing S, a collecting hood 3, an oil filter net, a smoke guiding plate 6, and a driving mechanism.

The casing S includes a fan cover 1 and a decorative cover 2 disposed outside the fan cover, and a mounting cavity 10 is formed between the fan cover 1 and the decorative cover 2, and the collecting hood 3 is disposed below the casing S, and the oil filter The net is a double-layer structure, that is, includes an inner oil filter net 4 and an outer oil filter net 5, and the smoke guide plate 6 is disposed under the outer oil filter net 5, and the smoke guide plate 6 and the collecting hood 3 are formed. Air inlet passage 11.

In this embodiment, the inner layer of oil filter net 4 is a fixed oil filter net fixed on the collecting hood 3, the outer layer of the oil screen 5 is a movable oil filter net, the outer layer of oil screen 5 and the inner layer of oil screen 4 Form an active connection. Specifically, mounting holes (not shown) are formed on both sides of the inner layer of the oil filter net 4, and in this embodiment, the mounting holes are disposed at four corners of the inner layer of the oil filter net 4, and the outer layer of the oil filter net A guide post 51 is mounted at a corresponding position of the guide post 51, and the guide post 51 is upwardly passed through the corresponding mounting hole. The top of the guide post 51 is exposed upward to the inner layer of the oil screen 4, and the spring 8 and the collar are mounted on the top of the guide post 51. 9. The spring 8 is constrained between the collar 9 and the inner filter screen 4.

The driving mechanism in this embodiment employs a pusher mechanism 7, and the pusher mechanism 7 is mounted in the mounting cavity 10. The push rod mechanism 7 includes a motor 71, a transmission mechanism 72, a guide rail 73, a lifting rod 74, and a U-shaped connecting plate 75. The motor 71 is mounted on the fan cover 1 and the transmission mechanism 72 is mounted on the fan cover 1 and driven by the motor 71. The lifting rod 74 has two and is disposed on both sides of the fan cover 1, and the lifting rod 74 is a push rod mechanism. At the driving output end, the lower end of the lifting rod 74 passes through the collecting hood 3 and is fixed on the smoke guiding plate 6. A first bump 52 is disposed on both sides of the outer oil filter net 5, and a second bump 741 that is always overlapped on the first bump 52 is disposed on the inner side of the lift rod 74. The U-shaped connecting plate 75 is connected between the lifting rod 74 and the transmission mechanism 72. The guiding rails 73 are respectively installed on two sides of the fan housing 1, and the transmission mechanism 72 can be driven by the existing screw nut transmission mechanism. The lead screw 721 rotates, and the U-shaped connecting plate 75 is fixed on the nut 722. Thus, the U-shaped connecting plate 75 can be driven by the transmission mechanism 72 to move up and down along the guide rail 73, and at the same time, the lifting rod 74 can be synchronized with the U-shaped connecting plate 75. Lifting movement.

In the initial movement range of the lifting rod 74, the outer oil filtering net 5 does not move synchronously with the lifting rod 74, that is, the gap of the oil filtering net is not changed at this time, and is suitable for the cooking mode of small air volume and less soot.

When the large oil smoke and large air volume mode is turned on, the motor 71 drives the lifting rod 74 to move further downward through the transmission mechanism 72. Since the lower end of the lifting rod 74 is connected to the smoke guiding plate 6, the smoke guiding plate 6 can follow the lifting rod 74. Simultaneously moving, thereby increasing the air intake amount of the air inlet passage 11 between the smoke guide panel 6 and the hood 3; meanwhile, since the second projection 741 of the lifting rod 74 is always overlapped on the outer layer of the oil filter net 5 a bump 52, therefore, when the lifting rod 74 moves downward, the outer oil filter net 5 can be driven to move downward synchronously, so that the gap between the outer oil screen 5 and the inner oil screen 4 becomes larger, Small filter oil resistance coefficient. When the lifting rod 74 moves upward, since the spring 8 on the guiding column 51 is in a compressed state, under the action of the spring 8, the outer oil filtering net 5 can be moved synchronously with the lifting rod 74, so that the outer layer is filtered. The gap between the oil net 5 and the inner oil screen 4 becomes small, and during the upward movement of the outer oil screen 5, the first bump 52 of the outer oil screen 5 can always be the same as the lift rod 74 The two bumps 741 are offset.

When the lifting rod 74 moves upward into the initial movement range, the second projection 741 is disengaged from the first projection 52, that is, as the lifting rod 74 moves upward, the outer oil screen 5 is no longer synchronously moved.

It can be seen that the push rod mechanism 7 of the embodiment can drive the outer filter oil net 5 to move synchronously while driving the smoke guide plate 6 to move, that is, the linkage between the smoke guide plate and the oil filter net can be realized, and the air inlet can be changed at the same time. The size of the passage 11 and the gap between the outer filter oil net 5 and the inner oil filter net 4 enable the range hood to be used by users in different working conditions, effectively balancing noise and air volume, and greatly improving the user experience.

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. Within the scope of protection of the present invention.

Claims

A range hood includes a casing (S), a collecting hood (3), an oil filter net and a smoke guiding plate (6), and the collecting hood (3) is disposed below the casing (S) The oil filter net is disposed at an air inlet of the collecting hood (3), and the oil filtering net is a double layer structure composed of an inner oil filtering net (4) and an outer oil filtering net (5), The smoke guiding plate (6) is disposed below the outer oil filtering net (5), and an air inlet passage (11) is formed between the tobacco guiding plate (6) and the collecting hood (3), wherein:

The utility model further comprises a driving mechanism, wherein one of the inner oil filter net (4) and the outer oil filter net (5) is a movable oil filter net, and the other oil filter net is a fixed oil filter net. The driving mechanism can drive the smoke guide plate (6) and the movable oil filter net to move synchronously, thereby simultaneously changing the size of the air inlet passage (11) and the gap between the movable oil filter net and the fixed oil filter net. .
The range hood according to claim 1, wherein said inner oil filter screen (4) is a fixed oil filter net fixed to said collecting hood (3), said outer layer filtering The oil net (5) forms an active connection with the inner oil screen (4) to form a movable oil filter net.
A range hood according to claim 2, wherein mounting holes are formed at both sides of the inner layer of the oil filter screen (4) at corresponding positions of the outer layer of the oil filter screen (5) A guide post (51) is mounted, the guide post (51) passing upward through the corresponding mounting hole, and the top of the guide post (51) is exposed upwardly to the inner filter screen (4).
A range hood according to claim 3, characterized in that a spring (8) and a collar (9) are mounted on the top of the guide post (51), the spring (8) being constrained in the Between the collar (9) and the inner filter screen (4).
A range hood according to claim 2, wherein said drive mechanism is a pusher mechanism (7) provided inside said casing (S).
A range hood according to claim 5, characterized in that said casing (S) comprises a fan casing (1) and a decorative cover (2) provided outside the fan casing (1), said fan A mounting cavity (10) is formed between the outer cover (1) and the decorative cover (2), the push rod mechanism (7) is installed in the mounting cavity (10), and the driving output end of the push rod mechanism (7) is Projecting from the mounting cavity (10) and connected to the smoke guide plate (6), and the push rod mechanism (7) drives the outer filter oil net while driving the smoke guide plate (6) to move (5) Synchronous movement.
The range hood according to claim 6, characterized in that the driving output end of the push rod mechanism (7) comprises two lifting rods (74), and the lifting rods (74) are respectively located in the fan housing On both sides of (1), the lower end of the lifting rod (74) passes through the collecting hood (3) and is fixed on the tobacco guiding plate (6), in the outer oil filtering net (5) A first protrusion (52) is disposed on both sides, and a second protrusion (741) that is always overlapped on the first protrusion (52) is disposed inside the lifting rod (74).
A range hood according to claim 7, wherein said push rod mechanism (7) further comprises a motor (71), a transmission mechanism (72), a guide rail (73) and a U-shaped connecting plate (75). The transmission mechanism (72) is mounted on the fan cover (1) and driven by the motor (71), and the lifting rod (74) is disposed on both sides of the fan cover (1), the U-shaped connection The plate (75) is connected between the lifting rod (74) and the transmission mechanism (72), and the guide rails (73) are at least two and are respectively mounted on two sides of the fan housing (1), the transmission mechanism ( 72) Driving the U-shaped connecting plate (75) to perform a lifting movement along the guide rail (73), thereby causing the lifting rod (74) to perform synchronous lifting movement.