CN220541190U

CN220541190U - Fume exhaust fan

Info

Publication number: CN220541190U
Application number: CN202322368650.9U
Authority: CN
Inventors: 施明芳
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-02-27
Anticipated expiration: 2033-08-31

Abstract

The utility model relates to a range hood, comprising: the shell is provided with a first air inlet; the smoke baffle plate is connected to the shell in a mode of rotating and/or translating relative to the shell and can open and close the first air inlet; the air inlet cavity is sleeved in the shell and connected to the shell in a mode of moving up and down relative to the shell, and a second air inlet is formed in the air inlet cavity; the power output end of the driving mechanism is connected with the smoke baffle plate so as to drive the smoke baffle plate to open and close the first air inlet; and a gear-rack transmission assembly for driving the air inlet cavity to move up and down is further arranged between the machine shell and the air inlet cavity, and the power input end of the gear-rack transmission assembly is in transmission connection with the power output end of the driving mechanism. The advantages are that: the lifting shell can be synchronously driven to lift by the driving mechanism, the smoke baffle plate is driven to open and close the air inlet, and the accuracy of the movement process of the lifting shell and the smoke baffle plate is ensured.

Description

Fume exhaust fan

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a range hood.

Background

A range hood is a kitchen appliance that purifies the kitchen environment. The conventional top-draft smoke exhaust ventilator is far away from the stove, and the smoke is more escaped, so that the smoke exhaust and purification effect is not ideal. The side-draught type smoke exhaust ventilator can block the lampblack rising through the overturned smoke baffle plate, but has the problem of shielding the sight of a user, and the effect of absorbing the lampblack can be influenced by changing the width of the smoke baffle plate.

In order to ensure the oil fume sucking effect, an integrated range hood with top suction and side suction is also disclosed in the chinese patent application with application number of cn201922087475.X (authorized bulletin number: CN 211316282U), which comprises: the upper shell is provided with a first smoke collecting cavity, and the first smoke collecting cavity is provided with an air outlet and a top suction air inlet; the lower shell is arranged on the lower side of the upper shell, the lower shell is provided with a second smoke collecting cavity, the second smoke collecting cavity is provided with a side suction air inlet, the top suction air inlet and the side suction air inlet are all arranged on the front side of the lower shell, and the first smoke collecting cavity is communicated with the second smoke collecting cavity. The lower extreme in second collection cigarette chamber is equipped with the lift casing, and on the leading flank of lift casing was located to the side suction inlet, lift casing sliding connection was in the bottom of lower casing, and the lift casing was gone up and down by first actuating mechanism drive for the side suction inlet can stretch out or hide in the second collection cigarette intracavity of lower casing along with the bottom of lift casing from lower casing, reduces the space and occupies. When the range hood is required to be used, the lifting shell is driven by the first driving mechanism to extend downwards out of the bottom of the lower shell, namely the side suction air inlet extends out of the bottom of the lower shell, the first arc plate is driven by the second driving mechanism or manually, so that the first arc plate is opened from the top suction air inlet, meanwhile, the fan assembly in the upper shell starts to work, the first smoke collecting cavity and the second smoke collecting cavity generate negative pressure to form suction power, most of cooking fume is sucked through the side suction air inlet, and residual fume which is not sucked by the side suction air inlet rises and is sucked through the top suction air inlet.

However, the above-mentioned range hood still has certain not enough, and the up-and-down movement of the above-mentioned lifting shell and the opening and closing of the top suction inlet need to set up two sets of independent actuating mechanism, lead to the range hood with high costs, easily interfere with other parts, for this reason, the applicant thinks how to design a kind of motion mechanism that can drive lifting shell and drive the smoke baffle to open and close the air intake through a set of actuating mechanism step by step to guarantee the accuracy of both motion processes is the technical problem that needs to be solved urgently.

Therefore, the existing range hood needs to be further improved.

Disclosure of Invention

The utility model aims to solve the technical problem of the prior art, and provides a range hood which can synchronously drive a lifting shell to lift and drive a smoke baffle plate to open and close an air inlet through a set of driving mechanism and ensure the accuracy of the movement process of the lifting shell and the smoke baffle plate.

The technical scheme adopted for solving the technical problems is as follows: a range hood, comprising:

the shell is provided with a first air inlet;

the smoke baffle plate is connected to the shell in a mode of rotating and/or translating relative to the shell and can open and close the first air inlet;

the air inlet cavity is sleeved in the shell and connected to the shell in a mode of moving up and down relative to the shell, and a second air inlet is formed in the air inlet cavity;

the power output end of the driving mechanism is connected with the smoke baffle plate so as to drive the smoke baffle plate to open and close the first air inlet;

and a gear-rack transmission assembly for driving the air inlet cavity to move up and down is further arranged between the machine shell and the air inlet cavity, and the power input end of the gear-rack transmission assembly is in transmission connection with the power output end of the driving mechanism.

Generally, the driving mechanism and the rack-and-pinion transmission assembly can be directly connected, but in consideration of the space arrangement condition in the casing, for example, the smoke baffle is generally arranged at the front, the air inlet cavity is generally arranged at the rear, the two cavities are directly provided with a certain distance, and the power input end of the rack-and-pinion transmission assembly is in transmission connection with the power output end of the driving mechanism through the synchronous belt assembly.

As an improvement, the gear rack transmission assembly comprises a transmission rack vertically arranged on the air inlet cavity and a transmission gear fixed relative to the casing, and the transmission gear is meshed with the transmission rack.

Further improved, the synchronous belt assembly comprises synchronous pulleys arranged at intervals and a synchronous belt wound between the two synchronous pulleys, one synchronous pulley is connected with the power output end of the driving mechanism, and the other synchronous pulley is connected with the transmission gear.

In order to simplify the transmission matching structure among the driving mechanism, the gear rack transmission assembly and the synchronous belt assembly, the driving mechanism comprises a driving motor and a transmission shaft connected with an output shaft of the driving motor in a transmission way, one synchronous belt wheel is coaxially arranged with the transmission shaft in a transmission way, and the other synchronous belt wheel is coaxially arranged with the transmission gear in a transmission way.

In order to enable the air inlet cavity to have enough downward travel and avoid interference problems caused by the arrangement of the transmission rack and other components, the transmission rack is arranged on the top of the front side wall of the air inlet cavity.

In order to drive the smoke baffle plate to deflect, the driving mechanism comprises a driving motor, and the power output end of the driving motor is connected with the smoke baffle plate through a hinge assembly.

Generally, the second air inlet may be disposed on a bottom wall of the air inlet cavity (i.e., the air inlet cavity is always exposed or opened in the lifting process), or may be disposed on a side wall of the air inlet cavity, but in order to ensure a smoke absorbing effect and an aesthetic property of the range hood in a closed state, the second air inlet is disposed on a front side wall of the air inlet cavity, and the air inlet cavity moves up to a set position relative to the casing along with a change of a position of the air inlet cavity relative to the casing to be accommodated in the casing, and closes a closed state of the second air inlet and an open state of at least partially exposing the second air inlet relative to the casing to move down to the set position.

As an improvement, when the air inlet cavity is in a folding state, the smoke baffle plate closes the first air inlet of the shell; when the air inlet cavity is in an open state, the smoke baffle plate opens the first air inlet of the shell. Two air inlets are simultaneously opened and closed through the same driving mechanism, and the oil fume suction effect can be effectively improved on the basis of reducing the number of the driving mechanisms. It is conceivable that the first air inlet and the second air inlet may be alternatively opened under the driving of the same driving mechanism, that is, the first air inlet or the second air inlet is independently selected to be opened.

In order to adapt to the lampblack rising path, the lampblack absorbing effect is improved, lampblack escaping is reduced, the first air inlet is formed in the front side of the bottom of the shell, an opening is formed in the rear side of the bottom of the shell, and the air inlet cavity is formed in the rear side of the bottom of the shell and can enter and exit the opening.

Compared with the prior art, the utility model has the advantages that: the first air inlet can be driven to be opened or closed by only one set of driving mechanism, the air inlet cavity is driven to move up and down, the problem that the space in the machine shell is crowded and the air inlet cavity is interfered with other parts due to the fact that the number of the driving mechanisms is large is avoided, and particularly, the power is transmitted between the power output end of the driving mechanism and the air inlet cavity through the gear rack transmission assembly, so that the lifting process of the air inlet cavity and the opening and closing process of the air inlet cavity are well matched, and the air inlet cavity is just moved to be in place in the up-down direction after the smoke baffle is opened or closed in place, and the accuracy of the movement process of the air inlet cavity and the air inlet cavity is guaranteed.

Drawings

Fig. 1 is a schematic perspective view of a range hood according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a perspective structure of the range hood according to the embodiment of the present utility model, taken along the front-rear direction (the smoke baffle is in a state of opening the first air inlet and the air inlet cavity is in a state of moving downwards);

fig. 3 is a schematic diagram of a perspective structure of the range hood according to the embodiment of the present utility model, taken along the front-rear direction (the smoke baffle is in a closed state where the first air inlet and the air inlet cavity are in a folded state);

fig. 4 is a plan view of the range hood according to the embodiment of the present utility model, with parts omitted.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Fig. 1-4 illustrate a preferred embodiment of the present utility model, a range hood comprising a housing 10 and an intake air cavity 14, the housing 10 generally comprising a blower housing (not shown) and a fume collection hood, the blower housing being connected above the fume collection hood, and a blower system (not shown) disposed within the blower housing.

The housing 10 in this embodiment shows only a fume collecting hood. The bottom front side of collection petticoat pipe is from preceding back downward sloping extension's lateral wall, has seted up first air intake 11 on this slope extension's the lateral wall, and first air intake 11 extends along left and right directions, and this first air intake 11 department covers has the oil net that is used for filtering the oil smoke. The rear side of the bottom of the fume collecting hood is basically horizontally arranged, an opening 12 communicated with the inner cavity of the fume collecting hood is formed in the fume collecting hood, the opening 12 is a strip-shaped opening with the left-right dimension larger than the front-back dimension, and the opening is matched with the cross section of the air inlet cavity 14 in dimension. The air intake chamber 14 is installed inside the cabinet 10 through the opening 12 and can move up and down with respect to the cabinet 10. Specifically, a second air inlet 140 communicating with the internal chamber is formed on the front side wall of the air inlet cavity 14, and the second air inlet 140 is also arranged to extend in the left-right direction. The air intake cavity 14 has a closed state (see fig. 4 for details) in which it is moved up to a set position relative to the casing 10 and is accommodated in the casing 10, and the second air intake 140 is closed (the second air intake 140 is blocked by the casing 10 and is closed), and an open state (see fig. 3 for details) in which it is moved down to a set position relative to the casing 10 and is at least partially exposed from the second air intake 140.

The first air inlet 11 of the fume collecting hood is provided with a fume baffle 13, and the upper edge part of the fume baffle 13 is rotatably arranged on the shell 10. Specifically, a driving mechanism is arranged in the casing 10, the driving mechanism comprises a driving motor 21 and a hinge assembly 23, and the smoke baffle 13 is connected with a power output end of the driving motor 21 through the hinge assembly 23, so that the first air inlet 11 is deflected to be opened and closed under the driving of the driving motor 21. The hinge assembly 23 may be a conventional hinge structure in the prior art, and the structure and the working process thereof are all of the prior art and will not be described in detail.

An important utility model point of this embodiment is: the up-and-down movement of the air inlet cavity 14 and the deflection of the smoke baffle 13 are realized by the same driving mechanism, namely, the driving mechanism for driving the smoke baffle 13 to deflect is also used for driving the air inlet cavity 14 to lift at the same time, specifically, the driving mechanism is provided with a first power output end which is connected with the smoke baffle 13 to drive the smoke baffle 13 to rotate and a second power output end which is connected with the air inlet cavity 14 to drive the air inlet cavity 14 to move up and down relative to the casing 10. The smoke barrier 13 is connected to the output shaft of the drive motor 21 by a conventional hinge assembly 23, which hinge assembly 23 constitutes a power take-off for the drive mechanism.

The output shaft of the driving motor 21 is also connected with the air inlet cavity 14 through a synchronous belt assembly and a gear rack transmission assembly, so that the air inlet cavity 14 is driven to ascend and descend while the smoke baffle 13 is driven to deflect.

Considering the space arrangement condition in the casing 10, such as that the smoke baffle 13 (the driving motor 21) is generally arranged at the front and the air inlet cavity 14 is generally arranged at the rear, the two are directly arranged at a certain distance, so that the gear rack transmission assembly is arranged adjacent to the air inlet cavity 14, and the synchronous belt assembly is arranged between the driving motor 21 and the air inlet cavity 14. Specifically, the rack and pinion transmission assembly includes a transmission rack 41 and a transmission gear 42 that are meshed, wherein the transmission rack 41 is vertically disposed on a front sidewall of the air intake cavity 14, specifically disposed on an upper portion of the front sidewall of the air intake cavity 14, and the transmission gear 42 is connected to the casing 10 through a corresponding support shaft and is fixed relative to the casing 10. When the driving gear 42 rotates in the forward and reverse directions, the driving rack 41 (i.e. the air inlet cavity 14) can be driven to move upwards or downwards. In order to ensure the stability of the up-and-down movement of the air inlet cavity 14, a corresponding linear guide rail pair can be arranged between the air inlet cavity 14 and the casing 10.

The timing belt assembly of the present embodiment includes timing pulleys 31 disposed at intervals, and a timing belt 32 wound between the two timing pulleys 31, one of which 31 is disposed adjacent to the drive motor 21 and the other of which is disposed adjacent to the transmission gear 42. Specifically, the driving mechanism further includes a transmission shaft 22 extending from left to right and drivingly connected to the output shaft of the driving motor 21, one end of the transmission shaft 22 is connected to the hinge assembly 23, the other end is coaxially drivingly connected to one of the timing pulleys 31, and the other timing pulley 31 is coaxially rotatably connected to the transmission gear 42. In order to achieve the purpose of adapting the rotation angle travel of the smoke baffle 13 to the up-and-down movement travel of the air inlet cavity 14, the diameter ratio of the two synchronous pulleys 31 and the rotation speed of the transmission shaft 22 can be reasonably arranged according to actual needs.

The range hood of this embodiment just can drive the smoke baffle 13 and open or close first air intake 11 and drive the air inlet cavity 14 and reciprocate through a set of actuating mechanism, avoided leading to the crowded and interference problem of other parts of space in the casing 10 because of actuating mechanism quantity sets up more, especially, transmit power through rack and pinion drive assembly between actuating mechanism's power take off end and air inlet cavity 14, can make the lift process of air inlet cavity 14 and the opening and closing process of smoke baffle 13 realize better matching, like after the smoke baffle 13 opens or closes in place, air inlet cavity 14 also moves in place in the upper and lower direction just, guarantees the accuracy of both motion processes.

The working process of the range hood is as follows:

after the range hood starts to run, the driving motor 21 acts, the driving motor 21 drives the smoke baffle 13 to deflect through the hinge assembly 23, so that the first air inlet 11 on the shell 10 is opened, meanwhile, the driving motor 21 drives the air inlet cavity 14 to move downwards through the transmission cooperation of the synchronous belt assembly and the gear rack, when the air inlet cavity moves downwards to a set position (the smoke baffle 13 also deflects to be opened to a set angle at the same time), the second air inlet 140 formed on the air inlet cavity 14 is exposed relative to the shell 10 to be opened, and therefore, the first air inlet 11 on the shell 10 and the second air inlet 140 on the air inlet cavity 14 are in an open state, so that the range hood effect is ensured.

After the range hood is closed, the driving motor 21 reversely rotates, the driving motor 21 drives the smoke baffle 13 to deflect through the hinge assembly 23, the first air inlet 11 on the shell 10 is closed, meanwhile, the driving motor 21 synchronous belt assembly and the transmission cooperation of the gear rack drive the air inlet cavity 14 to move upwards, when the air inlet cavity moves upwards to a set position (the smoke baffle 13 just closes the first air inlet 11 at the same time), the air inlet cavity 14 is folded in the shell 10, the second air inlet 140 formed in the air inlet cavity 14 is shielded by the shell 10 to be closed, so that the first air inlet 11 on the shell 10 and the second air inlet 140 on the air inlet cavity 14 are in a closed state, the range hood is smaller and more compact as a whole, excessive kitchen space is prevented from being occupied, and the use experience of a user is improved.

Claims

1. A range hood, comprising:

a housing (10) provided with a first air inlet (11);

the smoke baffle (13) is connected to the machine shell (10) in a manner of rotating and/or translating relative to the machine shell (10) and can open and close the first air inlet (11);

the air inlet cavity (14) is sleeved in the machine shell (10) and is connected to the machine shell (10) in a mode of moving up and down relative to the machine shell (10), and a second air inlet (140) is formed in the air inlet cavity (14);

the power output end of the driving mechanism is connected with the smoke baffle plate (13), so that the smoke baffle plate (13) is driven to open and close the first air inlet (11);

the method is characterized in that: a gear-rack transmission assembly for driving the air inlet cavity (14) to move up and down is further arranged between the machine shell (10) and the air inlet cavity (14), and the power input end of the gear-rack transmission assembly is in transmission connection with the power output end of the driving mechanism.

2. The range hood of claim 1, wherein: the power input end of the gear rack transmission assembly is in transmission connection with the power output end of the driving mechanism through the synchronous belt assembly.

3. The range hood of claim 2, wherein: the gear rack transmission assembly comprises a transmission rack (41) vertically arranged on the air inlet cavity (14) and a transmission gear (42) fixed relative to the machine shell (10), and the transmission gear (42) is meshed with the transmission rack (41).

4. A range hood according to claim 3, wherein: the synchronous belt assembly comprises synchronous pulleys (31) arranged at intervals and a synchronous belt (32) wound between the two synchronous pulleys (31), one synchronous pulley (31) is connected with the power output end of the driving mechanism, and the other synchronous pulley (31) is connected with the transmission gear (42).

5. The range hood of claim 4, wherein: the driving mechanism comprises a driving motor (21) and a transmission shaft (22) in transmission connection with an output shaft of the driving motor, wherein one synchronous pulley (31) is coaxially arranged with the transmission shaft (22) in transmission, and the other synchronous pulley (31) is coaxially arranged with the transmission gear (42) in transmission.

6. A range hood according to claim 3, wherein: the transmission rack (41) is arranged at the top of the front side wall of the air inlet cavity (14).

7. The range hood of claim 1, wherein: the driving mechanism comprises a driving motor (21), and the power output end of the driving motor (21) is connected with the smoke baffle plate (13) through a hinge assembly (23).

8. The range hood according to any one of claims 1 to 7, wherein: the second air inlet (140) is formed in the front side wall of the air inlet cavity (14), and the air inlet cavity (14) is contained in the casing (10) along with the change of the position of the air inlet cavity relative to the casing (10) and is moved upwards to a set position relative to the casing (10), and is closed in a closing state of the second air inlet (140) and is opened in at least partial exposed state of the second air inlet (140) due to the fact that the air inlet cavity is moved downwards to the set position relative to the casing (10).

9. The range hood of claim 8, wherein: when the air inlet cavity (14) is in a folding state, the smoke baffle (13) closes the first air inlet (11) of the shell (10);

when the air inlet cavity (14) is in an open state, the smoke baffle (13) opens the first air inlet (11) of the shell (10).

10. The range hood according to any one of claims 1 to 7, wherein: the first air inlet (11) is formed in the front side of the bottom of the machine shell (10), an opening (12) is formed in the rear side of the bottom of the machine shell (10), and the air inlet cavity (14) is formed in the rear side of the bottom of the machine shell (10) and can enter and exit the opening (12).