CN215863602U - Fume exhaust fan - Google Patents

Abstract

The utility model relates to a range hood, comprising: a first housing having a mounting cavity; the second shell is arranged at the lower part of the first shell and is provided with a vertically extending smoke inlet cavity, the smoke inlet cavity is communicated with the mounting cavity, and the front side wall of the second shell is provided with a smoke inlet through which smoke enters the smoke inlet cavity; the second shell comprises an upper shell and a lower shell, the smoke inlet is arranged on the lower shell, the lower shell can be arranged in the upper shell in a lifting way, and the second shell has a first state of descending to a low position and a second state of ascending to a high position; in the first state, the smoke baffle is positioned below the upper shell, and the smoke inlet is opened; in the second state, at least part of the lower shell enters the upper shell, and the smoke baffle plate closes the smoke inlet and is contained in the upper shell. When the lower shell rises to a high position, the space of the lower part is vacated, the space utilization rate is improved, the lower area is conveniently cleaned, the smoke inlet and the smoke baffle plate are shielded by the upper shell, the smoke inlet and the smoke baffle plate are prevented from being seen by a user, and the integral attractiveness of the range hood is improved.

Description

Fume exhaust fan

Technical Field

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

Background

The fume exhaust fan is one kitchen appliance for purifying kitchen environment and can exhaust the waste gas produced by burning kitchen range and fume produced during cooking fast to reach the aim of purifying kitchen environment. The existing range hood generally comprises a top-suction range hood and a near-suction range hood. The top-suction type range hood is more attractive, but the smoke inlet is higher, and the smoke suction effect is limited. Compared with a top-suction range hood, the near-suction range hood has a lower smoke inlet, but is influenced by the appearance structure and the internal air duct structure of the near-suction range hood, and the existing near-suction range hood cannot better approach oil smoke, so that the oil smoke suction effect is limited to a great extent. At present, a thin type oil smoke suction is also provided, which is provided with a smoke inlet cavity vertically arranged below a fan system, and the smoke inlet cavity can be sufficiently close to a kitchen range and an oil smoke generating source, so that the oil smoke is quickly sucked into the smoke inlet cavity to be discharged upwards once being generated, and the oil smoke suction effect is improved, for example, the Chinese patent application with the application number of CN202010031334.0 (publication number of CN111156555A) discloses the oil smoke suction machine with the smoke inlet cavity vertically arranged.

However, in the existing range hood with the vertically arranged smoke inlet cavity, because the smoke inlet cavity is too close to the top of the kitchen range, when the baffle of the air inlet is opened, the smoke inlet cavity is easily interfered with cooking utensils such as a steamer on the top of the kitchen range, and the cooking experience is reduced; on the other hand, because the volume of the smoke inlet cavity is larger, the smoke inlet cavity covers the wall, not only occupies a large amount of wall space, but also is not beneficial to cleaning the oil smoke on the wall.

To this end, application No. CN201910922913.1 (publication No. CN112161305A) discloses an oil smoke absorbing device, which includes a casing and a fan system disposed in the casing, wherein the casing includes a first casing and a second casing, the first casing has an installation cavity for installing the fan system, the second casing is disposed on the first casing and can be lifted up and down, the second casing has a smoke inlet cavity which can be lowered below the first casing and vertically extends, the second casing is provided with a smoke inlet through which oil smoke enters the smoke inlet cavity, the upper edge of the smoke inlet is provided with a smoke baffle plate which can be turned over, the casing is provided with a second driving mechanism which can gradually close the smoke inlet when the smoke inlet cavity is lifted up and gradually open the smoke inlet when the smoke inlet cavity is lowered down, the second driving mechanism includes a first assembly plate, a second assembly plate, a first elastic member, a transmission line and a take-up device, when the second casing is lowered, the transmission line is pulled out along with the descending of the second shell and gradually tensioned, and when the smoke inlet cavity is completely positioned below the first shell, the transmission line pulls the second assembling plate to overcome the elasticity of the first elastic piece to rotate relative to the first assembling plate, so that the smoke baffle plate is driven to turn outwards to open the smoke inlet; when the second casing rose, the drive line loosened gradually and was withdrawed by the spooler, and the cancellation is to the pulling force of second assembly plate, and the second assembly plate rotates for first assembly plate under the pulling force of first elastic component to it closes to drive the cigarette board inwards overturn and advance the mouth of cigarette. The vertically extending smoke inlet cavity of the range hood can be lifted up and down, the smoke inlet is fully close to a lampblack source when the smoke inlet descends, the lampblack absorbing effect is improved, the space of the installation wall surface is formed when the smoke inlet ascends, the space utilization rate is favorably improved, and the wall is convenient to clean and convenient to use.

However, the range hood in the above patent still has a certain disadvantage, and first, when the second housing is raised to the high position, although the smoke inlet is shielded by the smoke baffle and is in the closed state, the smoke inlet and the smoke baffle are still in the exposed state, which is seen by the user and affects the overall aesthetic property of the range hood. Secondly, the second actuating mechanism relates to the part more, and the equipartition is put in advancing the cigarette chamber, causes into the crowded problem of cigarette chamber, and especially keep off cigarette board upset process and drive through the drive line that sets up in advancing the cigarette intracavity, the transmission line arrange easily with other parts between the interference problem appear.

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

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the utility model is to provide a range hood which can hide a smoke inlet and a smoke baffle plate so as to improve the integral aesthetic property of the range hood, aiming at the current situation of the prior art.

The second technical problem to be solved by the utility model is to provide a range hood which can effectively simplify the overturning structure of the smoke baffle plate so as to avoid the crowding problem of the smoke inlet cavity, aiming at the current situation of the prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a range hood, comprising:

the first shell is provided with a mounting cavity for mounting the fan system;

the second shell is arranged at the lower part of the first shell and is provided with a vertically extending smoke inlet cavity, the smoke inlet cavity is communicated with the mounting cavity, and the front side wall of the second shell is provided with a smoke inlet through which smoke enters the smoke inlet cavity;

the smoke baffle is arranged on the front side wall of the second shell in a mode of being capable of turning up and down, so that the smoke inlet is opened or closed;

the second shell comprises an upper shell and a lower shell, the smoke inlet is arranged on the lower shell, and the lower shell can be arranged in the upper shell in a lifting manner and has a first state of descending to a low position and a second state of ascending to a high position;

in a first state, the smoke baffle is positioned below the upper shell, and the smoke inlet is opened;

in the second state, at least part of the lower shell enters the upper shell, and the smoke baffle plate closes the smoke inlet and is contained in the upper shell.

Under the first state, the smoke baffle plate turns forwards to open the smoke inlet, so that the smoke collecting purpose is achieved, and under the second state, the smoke baffle plate closes the smoke inlet and can be accommodated in the shell along with the lifting of the lower shell, so that the overall attractiveness of the range hood is ensured.

In order to realize the relative sliding between the upper shell and the lower shell, the lower part of the upper shell is provided with a first opening, the upper part of the lower shell is provided with a second opening opposite to the first opening, and the lower shell can enter and exit the first opening of the upper shell in a vertically sliding manner and defines the smoke inlet cavity together with the upper shell.

The technical scheme adopted by the utility model for solving the second technical problem is as follows: the lower shell is provided with an elastic part which acts on the smoke baffle and enables the smoke baffle to have a trend of being opened relative to the smoke inlet all the time, and the smoke baffle is gradually pressed by the first open edge of the upper shell to close the smoke inlet in the rising process of the lower shell.

Connect and conveniently set up the elastic component in order to realize keeping off the rotation of cigarette board, the rotating pin has on the casing down, keep off the cigarette board and rotate to be connected rotating pin on, the elastic component is the torsional spring, and this torsional spring cover is established rotating pin on, and first end with the inner wall that keeps off the cigarette board offsets, and the second end offsets with the inner wall of casing down.

The lifting action of the lower shell can be manually operated or driven by a driving mechanism, in order to realize the automatic lifting of the lower shell, the lifting mechanism also comprises a driving mechanism arranged on the inner wall of the upper shell, the driving mechanism is provided with a power output end with adjustable vertical displacement, and the power output end of the driving mechanism is connected with the lower shell.

In order to simplify the structure of the driving mechanism and the stability of the lower housing lifting process, the driving mechanism includes:

the motor is arranged on the inner wall of the upper shell;

the transmission screw rod is vertically arranged in the smoke inlet cavity and is connected with an output shaft of the motor, so that the transmission screw rod can rotate around the axis of the transmission screw rod under the driving of the motor;

the connecting rod is sleeved on the transmission screw rod and is in transmission connection with the transmission screw rod, and the connecting rod is further connected with the lower shell.

In order to collect oil, the bottom of the lower shell is connected with an oil cup used for receiving the oil flowing down from the lower shell.

In order to ensure the smoothness of the smoke flowing into the smoke inlet cavity through the smoke inlet, a guide plate which is inclined upwards from front to back is arranged in the lower shell and is right opposite to the smoke inlet, and the vertical projection of the lower edge of the guide plate is positioned in the oil cup.

Compared with the prior art, the utility model has the advantages that: lower casing physical stamina goes up and down relatively to the upper housing, and vertically extended smoke inlet cavity has been formed jointly, casing descends to the low-order state down under, the casing is exposed to the smoke inlet that sets up on casing down, and fully be close to cooking utensils and oil smoke emergence source, make the oil smoke produce just being inhaled into smoke inlet cavity rapidly and go up the row, thereby the oil absorption cigarette effect has been improved, when casing rises to the high position down, at least part of lower casing gets into in the casing, the space with the lower part is vacated, space utilization has been improved, also conveniently clean the below region, and simultaneously, keep off the cigarette board on the casing down and close during smoke inlet also gets into the casing, for upper housing shelters from, avoided seeing for the user, range hood's whole aesthetic property has been improved.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a side view of an embodiment of the present invention;

FIG. 3 is a front view of an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 6 is a schematic diagram of a portion of an embodiment of the present invention;

FIG. 7 is a schematic structural view of FIG. 6 with the lower housing omitted;

FIG. 8 is a schematic perspective view of the embodiment of the present invention without the front side wall plates of the upper and lower housings;

fig. 9 is a side view of the range hood according to the embodiment of the present invention during the lifting and lowering of the lower housing;

fig. 10 is a side view of the range hood according to the embodiment of the present invention when the lower housing is in the second state.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

Referring to fig. 1-10, a preferred embodiment of the present invention is shown. A range hood comprises a first shell 10, a second shell 20, a fan system 12, a smoke baffle 41, an oil cup 51 and a driving mechanism. The first casing 10 is a square body with a mounting cavity 11 for housing a fan system 12. The second housing 20 is connected to the bottom of the first housing 10, specifically, to the rear side of the bottom of the first housing 10, and has a vertically extending smoke inlet cavity 200, wherein the smoke inlet cavity 200 is communicated with the installation cavity 11, and the longitudinal depth (front-back direction) of the smoke inlet cavity 200 is smaller than the longitudinal depth of the installation cavity 11.

Referring to fig. 1 and 4, the second housing 20 includes an upper housing 21 and a lower housing 22. The lower portion of the upper housing 21 has a first opening 210, the upper portion of the lower housing 22 has a second opening 220 opposite to the first opening 210, and the overall shape of the upper housing 21 and the lower housing 22 is substantially the same, and the lower housing 22 can slide up and down into and out of the first opening 210 of the upper housing 21 and defines the smoke inlet 200 with the upper housing 21. Wherein, a corresponding slide rail assembly can be arranged between the inner wall surface of the upper shell 21 and the outer wall surface of the lower shell 22, so as to realize the stable lifting of the lower shell 22. The front side wall of the lower shell 22 is provided with a smoke inlet 23 for smoke to enter the smoke inlet cavity 200.

Referring to fig. 4, the driving mechanism is disposed on the inner wall of the upper housing 21, and specifically includes a motor 31, a transmission screw 32, and a connecting rod 33. The motor 31 is arranged on the inner wall of the upper shell 21, the transmission screw rod 32 is vertically arranged in the smoke inlet cavity 200, the upper end of the transmission screw rod 32 is connected with an output shaft of the motor 31 through a gear transmission assembly, and the lower end of the transmission screw rod 32 is connected with the upper end of the connecting rod 33. Specifically, the upper end of the connecting rod 33 is sleeved on the transmission screw rod 32 and is in transmission connection with the transmission screw rod 32, and the lower end of the connecting rod 33 is fixedly connected with the inner wall of the lower shell 22. When the motor 31 is operated, the transmission screw 32 is driven to rotate around the axis thereof, and the connecting rod 33 (i.e. the lower shell 22) is driven to move up and down relative to the upper shell 21.

The lower case 22 has a first state of being lowered to a low position and a second state of being raised to a high position in the process of being lifted relative to the upper case 21. Referring to fig. 5, in the first state, the lower case 22 is positioned below the upper case 21, whereby the smoke inlet 23 is exposed. Referring to fig. 10, in the second state, at least a part of the lower housing 22 enters the upper housing 21, and thus the smoke inlet 23 of the lower housing 22 is also hidden by the upper housing 21.

Referring to fig. 3 and 4, an oil cup 51 for receiving oil flowing down from the lower housing 22 is connected to the bottom of the lower housing 22. In the present embodiment, the oil cup 51 has a long bar shape and is disposed to extend in the width direction of the lower housing 22, thereby achieving effective collection of oil dripping on the upper housing 21. In addition, in order to ensure the smoothness of the smoke flowing into the smoke inlet cavity 200 through the smoke inlet 23, a guide plate which is inclined upwards from front to back is arranged in the lower shell 22 and is opposite to the smoke inlet 23, the vertical projection of the lower edge of the guide plate is positioned in the oil cup 51, and thus the oil retained on the guide plate can also flow into the oil cup 51 below.

Referring to fig. 6 and 7, the smoke barrier 41 is disposed at the upper edge of the smoke inlet 23 so as to be able to be turned upside down. Specifically, the left and right sides of the lower housing 22 are provided with rotation pins 43, the left and right sides of the inner wall surface of the smoke barrier 41 are provided with support arms 42, the support arms 42 are arc-shaped, and the support arms 42 are rotatably connected to the corresponding rotation pins 43. In the first state, the smoke baffle plate 41 is positioned below the upper shell 21 and overturns forwards to open the smoke inlet 23, so that the purpose of gathering smoke is achieved, and in the second state, the smoke baffle plate 41 closes the smoke inlet 23 and can be accommodated in the shell along with the lifting of the lower shell 22, so that the overall aesthetic property of the range hood is ensured.

With continued reference to fig. 6 and 7, the lower housing 22 of the present embodiment is further provided with an elastic member, which acts on the smoke barrier 41 and makes the smoke barrier 41 always have a tendency to open relative to the smoke inlet 23. Specifically, the elastic member is preferably a torsion spring 44, the torsion spring 44 is sleeved on the rotating pin 43, and a first end of the torsion spring 44 abuts against the inner wall of the smoke baffle 41 and a second end abuts against the inner wall of the lower housing 22. More specifically, the inner wall of the smoke barrier 41 is provided with a patch 411, the patch 411 is provided with a positioning hole, and the first end of the torsion spring 44 is connected to the positioning hole of the patch 411, so that positioning is realized, and the first end of the torsion spring 44 is prevented from falling off. The smoke barrier 41 is pressed by the edge of the first opening 210 of the upper housing 21 to gradually close the smoke inlet 23 during the ascending process of the lower housing 22. During the descending process of the lower shell 22, the smoke barrier 41 is gradually exposed, and when the upper edge of the smoke barrier 41 is separated from the constraint of the upper shell 21 (the upper edge of the smoke barrier 41 is lower than the lower edge of the first opening 210 of the upper shell 21), the smoke inlet 23 is turned forwards and opened under the elastic force of the torsion spring 44. Due to the structural design, a driving device for overturning the smoke baffle plate 41 in the prior art is omitted, the crowding problem in the smoke inlet cavity 200 of the range hood and the interference problem of each part are reduced, and the smoothness of the process of passing smoke through the smoke inlet cavity 200 is also ensured.

The lower casing 22 of this embodiment can go up and down relatively to last casing 21, and vertically extended smoke inlet 200 has been formed jointly, casing 22 descends to low position when state down, casing 21 is exposed to the smoke inlet 23 that sets up on casing 22 down, and be close to cooking utensils and oil smoke emergence source fully, make the oil smoke just produce and be inhaled into smoke inlet 200 and arrange on the row fast, thereby the oil absorption cigarette effect has been improved, when casing 22 rose to high position down, at least part entering of casing 22 goes into in last casing 21 down, the space of with the lower part is vacated, space utilization has been improved, also conveniently clean the below region, and simultaneously, smoke inlet 23 on the casing 22 down also shelters from for last casing 21, avoid seeing for the user, the whole aesthetic property of range hood has been improved.

On the basis of the above embodiments, other embodiments can be obtained by replacing and improving the related technical features. For example, the elastic member may be formed by various conventional techniques, such as various elastic members including a compression spring, a spring plate, etc., in addition to the torsion spring 44. For another example, the driving mechanism for driving the lower case 22 to ascend and descend may be a link structure, a gear transmission mechanism, or other various conventional techniques, besides the transmission connection between the screw rod and the connecting rod 33.

Claims (8)

1. A range hood, comprising:

a first housing (10) having a mounting cavity (11) for housing a fan system (12);

the second shell (20) is arranged at the lower part of the first shell (10) and is provided with a smoke inlet cavity (200) which extends vertically, the smoke inlet cavity (200) is communicated with the mounting cavity (11), and a smoke inlet (23) for smoke to enter the smoke inlet cavity (200) is formed in the front side wall of the second shell (20);

the smoke baffle plate is arranged on the front side wall of the second shell (20) in a mode of being capable of turning up and down, so that the smoke inlet (23) is opened or closed;

the method is characterized in that: the second shell (20) comprises an upper shell (21) and a lower shell (22), the smoke inlet (23) is arranged on the lower shell (22), and the lower shell (22) can be arranged in the upper shell (21) in a lifting way and has a first state of descending to a low position and a second state of ascending to a high position;

in a first state, the smoke baffle plate (41) is positioned below the upper shell (21) and opens the smoke inlet (23);

in the second state, at least part of the lower shell (22) enters the upper shell (21), and the smoke baffle plate (41) closes the smoke inlet (23) and is accommodated in the upper shell (21).

2. The range hood of claim 1, wherein: the lower part of the upper shell (21) is provided with a first opening (210), the upper part of the lower shell (22) is provided with a second opening (220) opposite to the first opening (210), and the lower shell (22) can slide up and down to enter and exit the first opening (210) of the upper shell (21) and defines the smoke inlet cavity (200) together with the upper shell (21).

3. The range hood of claim 2, wherein: the lower shell (22) is provided with an elastic part which acts on the smoke baffle plate (41) and enables the smoke baffle plate (41) to have a trend of opening relative to the smoke inlet (23) all the time, and the smoke baffle plate (41) gradually closes the smoke inlet (23) by being pressed by the edge of the first opening (210) of the upper shell (21) in the process of rising along with the lower shell (22).

4. The range hood of claim 3, wherein: lower casing (22) is gone up and is had rotating pin (43), keep off cigarette board (41) and rotate to be connected rotating pin (43) on, the elastic component is torsional spring (44), and this torsional spring (44) cover is established rotating pin on, and first end with the inner wall that keeps off cigarette board (41) offsets, the second end offsets with the inner wall of lower casing (22).

5. The range hood according to any one of claims 1 to 4, wherein: the power output end of the driving structure is connected with the lower shell (22).

6. The range hood of claim 5, wherein: the drive mechanism includes:

the motor (31) is arranged on the inner wall of the upper shell (21);

the transmission screw rod (32) is vertically arranged in the smoke inlet cavity (200) and is connected with an output shaft of the motor (31), so that the transmission screw rod can rotate around the axis of the transmission screw rod under the driving of the motor (31);

the connecting rod (33) is sleeved on the transmission screw rod (32) and is in transmission connection with the transmission screw rod (32), and the connecting rod (33) is also connected with the lower shell (22).

7. The range hood according to any one of claims 1 to 4, wherein: the bottom of the lower shell (22) is connected with an oil cup (51) used for receiving oil flowing down from the lower shell (22).

8. The range hood of claim 7, wherein: a guide plate which inclines upwards from front to back is arranged in the lower shell (22) and is opposite to the smoke inlet (23), and the vertical projection of the lower edge of the guide plate is positioned in the oil cup (51).

Images