Range hood

Abstract

The utility model relates to a range hood, which comprises a housing, a smoke inlet is arranged on the front side wall of the housing; the fan system is arranged in the machine shell and used for sucking external oil smoke into the machine shell through the smoke inlet; the upper end part of the smoke baffle is arranged at the smoke inlet in a manner of being capable of being overturned forwards and backwards, and the smoke baffle can be overturned forwards to open the smoke inlet and overturned backwards to close the smoke inlet; an auxiliary air inlet device with an oil smoke inlet and an oil smoke outlet is arranged on one side, facing the smoke inlet, of the smoke baffle, and the oil smoke outlet of the auxiliary air inlet device is communicated to the air inlet side of the fan system through a connecting pipe, so that external oil smoke can be sucked into the fan system through the auxiliary air inlet device and the connecting pipe. When rising upwards, the oil smoke can be sucked into the machine shell through the smoke inlet, meanwhile, the auxiliary air inlet device arranged on the side, facing the smoke inlet, of the smoke baffle can suck away the oil smoke near the smoke baffle, and therefore the oil smoke is prevented from escaping from the position of the smoke baffle.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of kitchen appliances, specifically relates to an extractor hood. BACKGROUND

[0002] The existing extractor hood relies on the operation of the internal fan system to form a negative pressure area, and the oil fume flow in the kitchen is discharged outdoors after passing through the extractor hood under the action of atmospheric pressure.

[0003] At present, in order to avoid oil fume escape, the extractor hood on the market is generally provided with a movable opening smoke baffle, specifically like the Chinese invention patent application "Smoke baffle driving system, smoke baffle driving method, extractor hood and storage medium" with the application number 202310804283.4 and the application publication number CN116734301A, the smoke baffle driving system thereof is connected with the smoke baffle and includes a motor; a transmission mechanism connected between the motor and the smoke baffle, which can convert the rotating action of the motor into the swinging action of driving the smoke baffle; a hydraulic system connected with the transmission mechanism, which is used for providing resistance to the transmission mechanism to adjust the driving speed of the smoke baffle.

[0004] For example, the Chinese utility model patent "Extractor hood" with the patent number 202322365018.9 and the authorization announcement number CN220541189U includes: a casing, which is provided with a first air inlet; a smoke baffle, which is connected to the casing in a manner of rotating and / or translating relative to the casing and can open and close the first air inlet; an air inlet cavity, which is connected to the casing in a manner of moving up and down relative to the casing and is provided with a second air inlet; and a movement mechanism, which has a first power output end connected to the smoke baffle and a second power output end connected to the air inlet cavity; under the driving of the movement mechanism, the smoke baffle can slide back and forth along the front side wall of the casing and simultaneously deflect up and down along the left and right extending axes to open and close the first air inlet, and the air inlet cavity can move up and down relative to the casing to open and close the second air inlet.

[0005] The design of the smoke baffle can effectively intercept the rising oil fume, but there is still a problem of a small amount of oil fume escape. Especially for the existing near-suction type extractor hood, when the smoke baffle is opened, the distance between the front end of the smoke baffle and the wall is too large, which is easy to block the user's vision. Therefore, in the design, the distance between the front end of the smoke baffle and the wall is shortened, which also leads to the escape of oil fume at the front end of the smoke baffle. UTILITY MODEL CONTENTS

[0006] The technical problem to be solved by the utility model is to provide an extractor hood to reduce the risk of oil fume escape according to the current status of the prior art.

[0007] The utility model discloses a kind of range hood, including:

[0008] Casing, its front side wall is equipped with smoke inlet;

[0009] Fan system, be located in the casing, for external oil fume is inhaled into the casing by smoke inlet;

[0010] Smoke baffle, its upper end portion can be forward and backward reversibly located at the smoke inlet, and can be reversibly turned forward to open smoke inlet, reversibly turned backward to close smoke inlet;

[0011] Its characterized in that:

[0012] The side of the smoke baffle facing smoke inlet is equipped with auxiliary air inlet device with oil fume inlet and oil fume outlet, and the oil fume outlet of the auxiliary air inlet device is communicated to the air inlet side of the fan system through connecting pipe, so that external oil fume can be sucked into the fan system through auxiliary air inlet device and connecting pipe.

[0013] When oil fume rises upwards, it can be sucked into the casing through smoke inlet, and the auxiliary air inlet device arranged on the side of the smoke baffle facing smoke inlet can suck away oil fume near the smoke baffle, thereby avoiding oil fume escaping from the smoke baffle. In the utility model, the oil fume outlet of the auxiliary air inlet device is communicated to the air inlet side of the fan system through connecting pipe, so that the auxiliary air inlet device can directly suck oil fume under the action of the fan system, and the sucked oil fume enters the air inlet side of the fan system through connecting pipe.

[0014] Preferably, the oil fume inlet of the auxiliary air inlet device is arranged downward. Thus, rising oil fume can be quickly sucked away.

[0015] Preferably, the auxiliary air inlet device has left-right extending horizontal channel, and the oil fume inlet is arranged in the horizontal channel in left-right direction. Thus, oil fume near the smoke baffle can be sucked away in a large range.

[0016] Further, the bottom wall of the horizontal channel where the oil fume inlet is located is first bottom wall, and the oil fume inlet is located at the front side of the first bottom wall.

[0017] When the smoke baffle opens smoke inlet, the first bottom wall is inclined downward from front to back.

[0018] When the smoke baffle closes smoke inlet, the first bottom wall is inclined upward from front to back.

[0019] Thus, when the baffle opens the smoke inlet, the oil stains in the auxiliary air inlet device flow to the rear side of the first bottom wall under the action of gravity and are temporarily stored in the horizontal channel; and when the baffle closes the smoke inlet, the oil stains temporarily stored in the horizontal channel flow downward under the action of gravity and flow out of the oil fume inlet, and then can be collected in the oil cup at the bottom of the range hood.

[0020] Preferably, the auxiliary air inlet device is in the shape of U, and further has vertical channels extending upward from both ends of the horizontal channel, and the upper end of each vertical channel is the oil fume outlet of the auxiliary air inlet device.

[0021] In actual use, the possibility of oil fume escaping from the lower end of the baffle is relatively large, and therefore, preferably, the oil fume inlet of the auxiliary air inlet device is adjacent to the lower end of the baffle.

[0022] Preferably, the fan system is arranged above the smoke inlet, and the oil fume outlet of the auxiliary air inlet device is adjacent to the upper end of the baffle.

[0023] In the above scheme, preferably, the fan system is a centrifugal fan, which has:

[0024] A volute having a front cover plate, a rear cover plate and a ring wall connected between the front cover plate and the rear cover plate, the ring wall and the corresponding parts of the front cover plate and the rear cover plate together define an upwardly open air outlet at the top of the volute; the rear cover plate is provided with an air inlet;

[0025] An impeller arranged in the volute in a manner rotatable about a central axis extending forward and rearward;

[0026] A motor arranged on the front cover plate of the volute, and the rotating shaft of the motor extends rearward and is connected with the impeller for driving the impeller to rotate;

[0027] The inlet end of the connecting pipe is arranged corresponding to the oil fume outlet of the auxiliary air inlet device, and the outlet end of the connecting pipe is open to the front cover plate of the volute.

[0028] Thus, the arrangement of the outlet end of the connecting pipe does not affect the use of the fan system, and the fan system can drive external oil fume to enter the fan system through the auxiliary air inlet device and the connecting pipe, and the oil fume enters the fan system together with the oil fume entering from the air inlet of the centrifugal fan and is discharged from the air outlet of the centrifugal fan.

[0029] In the above schemes, preferably, the front side wall of the casing is provided with a through hole for the connecting pipe to pass through.

[0030] Further, the connecting pipe comprises:

[0031] A switching pipe, the first port of which is connected with the oil fume outlet of the auxiliary air inlet device, and the second port of which is inserted into the casing through the through hole.

[0032] A flexible hose has a first port connected to the second port of the adapter pipe, and a second port directly or indirectly connected to the air inlet side of the fan system.

[0033] Compared with the prior art, the oil fume is sucked into the casing through the smoke inlet, meanwhile, the auxiliary air inlet device arranged on the side of the smoke baffle facing the smoke inlet can suck away the oil fume near the smoke baffle, so that the oil fume escaping at the smoke baffle is avoided, and the oil fume outlet of the auxiliary air inlet device is communicated to the air inlet side of the fan system through the connecting pipe, so that the auxiliary air inlet device can directly suck the oil fume under the action of the fan system, and the sucked oil fume enters the air inlet side of the fan system through the connecting pipe. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a structure schematic view of the range hood according to the embodiment of the present application (the smoke baffle opens the air inlet);

[0035] Figure 2 It is a structure schematic view of the range hood according to the embodiment of the present application (the smoke baffle opens the air inlet); Figure 1 It is a partial structure schematic view of the range hood from another perspective;

[0036] Figure 3 It is a partial structure schematic view of the range hood from another perspective; Figure 1 It is a partial structure sectional view of the range hood;

[0037] Figure 4 It is a partial structure sectional view of the range hood; Figure 1 It is another sectional view of the range hood;

[0038] Figure 5 It is a sectional view of the range hood according to the embodiment of the present application (the smoke baffle closes the air inlet). DETAILED DESCRIPTION

[0039] The present application will be further described in detail below with reference to the embodiments of the drawings.

[0040] As shown in the drawings, it is a preferred embodiment of the range hood according to the present application, which comprises a casing 1, a fan system 2, a smoke baffle 3, an auxiliary air inlet device 4 and a connecting pipe 5. Figures 1 to 5 The side of the range hood facing the user is the front side. The casing 1 comprises a smoke collecting cover 1a and a fan frame 1b arranged on the smoke collecting cover 1a, and the front side wall of the smoke collecting cover 1a is inclined forward from bottom to top and is provided with a smoke inlet 11.

[0041] The fan system 2 is arranged in the fan frame 1b and is used for sucking the external oil fume into the casing 1 through the smoke inlet 11.

[0042] Figure 2 4 ​​As shown, the fan system 2 is a centrifugal fan, which has a volute 20, an impeller 24 and a motor 25. The volute 20 has a front cover plate 21, a rear cover plate 22 and a ring wall 23 connected between the front cover plate 21 and the rear cover plate 22. The ring wall 23 and the corresponding parts of the front cover plate 21 and the rear cover plate 22 together define an upwardly open air outlet 2b at the top of the volute 20. The rear cover plate 22 is provided with an air inlet 2a. The impeller 24 is arranged in the volute 20 in a manner that it can rotate about a central axis extending front-to-rear. The motor 25 is arranged on the front cover plate 21 of the volute 20, and the rotating shaft of the motor 25 extends rearward and is connected with the impeller 24 for driving the impeller 24 to rotate.

[0043] The upper end of the smoke baffle 3 is arranged in a front-to-rear flip manner at the smoke inlet 11, and can be flipped forward to open the smoke inlet 11 and flipped rearward to close the smoke inlet 11. The side of the smoke baffle 3 facing the smoke inlet 11 is provided with an auxiliary air inlet device 4 having an oil fume inlet 4a and an oil fume outlet 4b. The oil fume outlet 4b of the auxiliary air inlet device 4 is connected to the air inlet side of the fan system 2 through a connecting pipe 5, so that external oil fume can be sucked into the fan system 2 through the auxiliary air inlet device 4 and the connecting pipe 5. In the embodiment, the auxiliary air inlet device 4 is in a U shape, which has leftward and rightward extending horizontal channels 41 and upwardly extending vertical channels 42 extending from both ends of the horizontal channels 41. The horizontal channels 41 are arranged adjacent to the lower end of the smoke baffle 3. The bottom wall of the horizontal channels 41 where the oil fume inlets 4a are located is a first bottom wall 411. The oil fume inlets 4a are a plurality of and arranged in a left-to-right direction on the front side of the first bottom wall 411. The upper end of each vertical channel 42 is the oil fume outlet 4b of the auxiliary air inlet device 4, which is adjacent to the upper end of the smoke baffle 3. As shown, Figure 3 、 4 As shown, when the smoke baffle 3 opens the smoke inlet 11, the first bottom wall 411 is inclined downward from front to rear. As shown, Figure 5 As shown, when the smoke baffle 3 closes the smoke inlet 11, the first bottom wall 411 is inclined upward from front to rear. In this way, when the smoke baffle 3 opens the smoke inlet 11, the oil fume in the auxiliary air inlet device 4 flows to the rear side of the first bottom wall 411 under the action of its own gravity and is temporarily stored in the bottom of the horizontal channels 41. When the smoke baffle 3 closes the smoke inlet 11, the oil fume temporarily stored in the horizontal channels 41 flows downward under the action of its own gravity and flows out from the oil fume inlets 4a, and then can be collected into an oil cup at the bottom of the range hood.

[0044] The inlet end of the connecting pipe 5 corresponds to the oil fume outlet 4b of the auxiliary air inlet device 4, and the outlet end of the connecting pipe 5 is open to the front cover plate 21 of the volute 20. In the embodiment, the front side wall of the casing 1 is provided with a perforation 12 for the connecting pipe 5 to pass through at the position of the upper end of each vertical channel 42, and two perforations 12 are located above the oil fume inlet 11, left and right. The connecting pipe 5 includes two adapter pipes 51 and two flexible hoses 52, the first end of each adapter pipe 51 is connected with the oil fume outlet 4b of the corresponding auxiliary air inlet device 4, and the second end of each adapter pipe 51 is inserted into the smoke collecting hood 1a through the corresponding perforation 12. The first end of each flexible hose 52 is connected with the second end of the corresponding adapter pipe 51, and the second end of each flexible hose 52 is connected to the air inlet side of the fan system 2 through a connecting pipe therebetween.

[0045] When the oil fume rises upward, it can be sucked into the casing 1 through the oil fume inlet 11, and the auxiliary air inlet device 4 arranged on the side of the smoke baffle 3 facing the oil fume inlet 11 can suck away the oil fume near the lower end of the smoke baffle 3, so as to avoid the oil fume escaping from the lower end of the smoke baffle 3.

[0046] In the description and claims of the present application, terms are used to generally refer to the structure of the application as well as the components of that structure. When the applications are used in this way, to connect the claims to the structure, they are intended to be open ended, such that an "including" relationship is presented with respect to the claims. Thus, a connector that is "connected to", "coupled to" and so forth is not limited to direct connection or coupling, but instead can be indirect as through a connector or intermediate component whether mechanical, electrical, or otherwise. Terms such as "front", "back", "top", "bottom", "over", "under", "side", "top", "bottom", and the like when used in this application, are used for clarity, and relative to the examples as shown in the drawings and are not intended to limit the application to any one orientation or position. Since the application can be positioned in a number of orientations, the terms should be understood as being used for convenience and are not necessarily limited to the as-oriented position.

[0047] In the description and claims of the present application, the term "vertical" is used to mean substantially along the up-down direction, and is not limited to only the vertical direction, but can also be slightly inclined relative to the vertical direction.

Claims

1. A range hood, comprising: The casing (1) has a smoke inlet (11) on its front side wall; A fan system (2) is installed inside the housing (1) and is used to draw external oil fumes into the housing (1) through the smoke inlet (11); The smoke baffle (3) is provided at the smoke inlet (11) with its upper end flipping back and forth, and can flip forward to open the smoke inlet (11) and flip backward to close the smoke inlet (11); Its features are: The smoke baffle (3) is provided with an auxiliary air intake device (4) with an oil fume inlet (4a) and an oil fume outlet (4b) on the side facing the smoke inlet (11). The oil fume outlet (4b) of the auxiliary air intake device (4) is connected to the air intake side of the fan system (2) through a pipe (5) so that external oil fumes can be drawn into the fan system (2) through the auxiliary air intake device (4) and the pipe (5).

2. The range hood according to claim 1, characterized in that: The fume inlet (4a) of the auxiliary air intake device (4) is set downwards.

3. The range hood according to claim 2, characterized in that: The auxiliary air intake device (4) has a horizontal channel (41) extending to the left and right, and there are at least two oil fume inlets (4a) arranged at intervals in the horizontal channel (41) in the left and right direction.

4. The range hood according to claim 3, characterized in that: The bottom wall where the fume inlet (4a) of the transverse channel (41) is located is called the first bottom wall (411), and the fume inlet (4a) is located on the front side of the first bottom wall (411); When the smoke baffle (3) opens the smoke inlet (11), the first bottom wall (411) tilts downward from front to back; When the smoke baffle (3) closes the smoke inlet (11), the first bottom wall (411) tilts upward from front to back.

5. The range hood according to claim 3, characterized in that: The auxiliary air intake device (4) is U-shaped and also has vertical channels (42) extending upward from both ends of the horizontal channel (41). The upper port of each vertical channel (42) is the fume outlet (4b) of the auxiliary air intake device (4).

6. The range hood according to claim 2, characterized in that: The fume inlet (4a) of the auxiliary air intake device (4) is located near the lower end of the smoke baffle (3).

7. The range hood according to claim 6, characterized in that: The fan system (2) is located above the smoke inlet (11), and the oil fume outlet (4b) of the auxiliary air intake device (4) is adjacent to the upper end of the smoke baffle (3).

8. The range hood according to claim 1, characterized in that: The fan system (2) is a centrifugal fan, which has the following characteristics: The volute (20) has a front cover plate (21), a rear cover plate (22), and an annular wall (23) connecting the front cover plate (21) and the rear cover plate (22). The two ends of the annular wall (23) in the circumferential direction, together with the corresponding portions of the front cover plate (21) and the rear cover plate (22), define an upward-facing air outlet (2b) located at the top of the volute (20). The rear cover plate (22) has an air inlet (2a). The impeller (24) is disposed within the volute (20) in such a way that it can rotate about its central axis extending back and forth; A motor (25) is mounted on the front cover plate (21) of the volute (20), and the rotating shaft of the motor (25) extends rearward and is connected to the impeller (24) for driving the impeller (24) to rotate. The inlet end of the pipe (5) is provided corresponding to the fume outlet (4b) of the auxiliary air intake device (4), and the outlet end of the pipe (5) opens into the front cover plate (21) of the volute (20).

9. The range hood according to any one of claims 1 to 8, characterized in that: The front side wall of the housing (1) is provided with a perforation (12) for the pipe (5) to pass through.

10. The range hood according to claim 9, characterized in that: The receiver (5) includes: The adapter pipe (51) has its first port connected to the fume outlet (4b) of the auxiliary air intake device (4), and its second port inserted into the housing (1) through the perforation (12). A flexible hose (52) has a first port connected to the second port of the adapter pipe (51), and the second port is directly or indirectly connected to the air inlet side of the fan system (2).

Images