Lifting type range hood

Abstract

A lifting type range hood comprises a fan frame, an outer shell and an exhaust fume collecting hood, the outer shell is arranged on the outer side of the fan frame, the exhaust fume collecting hood is arranged at the bottom of the outer shell, a left smoke inlet and a right smoke inlet are formed in the bottom of the exhaust fume collecting hood, a left smoke deflector and a right smoke deflector are installed on the exhaust fume collecting hood, the left smoke deflector can open and close the left smoke inlet, and the right smoke deflector can open and close the right smoke inlet. The right smoke deflector can open and close the right smoke inlet, the outer shell and the smoke collecting hood can be driven by the driving mechanism to be equivalent to the fan frame to do synchronous lifting motion, and the left smoke deflector and the right smoke deflector can be synchronously opened or alternatively opened along with descending of the outer shell and the smoke collecting hood. The left smoke guide plate and the right smoke guide plate of the lifting type range hood can be synchronously opened or alternatively opened along with descending of the outer shell and the smoke collecting hood, double-opening and double-suction can be achieved when the left smoke guide plate and the right smoke guide plate are synchronously opened, the lifting type range hood is suitable for simultaneous cooking of double furnace ends, single-opening and single-suction can be achieved when one of the left smoke guide plate and the right smoke guide plate is alternatively opened, and the lifting type range hood is suitable for cooking of one furnace end. And a better flow distribution function is realized.

Description

Technical Field

[0001] The utility model relates to a range hood, in particular to a lifting range hood. Background Art

[0002] Chinese cooking produces a lot of oil smoke. To keep the kitchen environment clean and the human body healthy, range hoods have become one of the essential appliances in modern family kitchens. However, as the application rate of range hoods increases, people pay more and more attention to the oil smoke extraction effect of range hoods. If the distance between the air inlet of the range hood and the oil smoke generating area is large, the oil smoke inhalation path is long, and the inhalation time increases, which makes it easy for oil smoke to escape during cooking. If the installation height of the range hood is lowered, the smoke inlet is as close to the smoke source as possible, and the negative pressure expands downward, although it is beneficial to improve the oil smoke extraction effect, it will cause the cooking space to be too small, and the cook's head is easy to accidentally touch the smoke hood. In addition, after the installation height is lowered, it also affects the line of sight and the overall appearance of the kitchen. For this reason, people have invented a lifting range hood, such as the "A Range Hood" disclosed in the Chinese utility model patent with patent number 202322333393.5 (authorization announcement number CN 220541186 U), which includes a main frame, an outer shell and a smoke hood. The outer shell is arranged on the outside of the main frame, and the smoke hood is arranged at the lower end of the outer shell. The smoke hood has a smoke collection port with the port facing downward. The main frame is provided with a driving mechanism, which can drive the outer shell to move up and down relative to the main frame; the smoke collection port is provided with a smoke guide plate, one end of which is hinged to one side of the smoke collection port, and the other end is movably connected to the main frame through a connecting rod. When the outer shell moves downward, the smoke guide plate gradually turns inward relative to the smoke collection port, so that the opening range of the smoke collection port gradually increases. Although the range hood solves the above problems, its left and right smoke guide plates can only open and close synchronously, and cannot realize single opening and suction according to specific cooking conditions. In summary, further improvements need to be made to the existing range hoods. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a lifting range hood with a single-side smoke inlet that can be opened or both sides of the smoke inlet opened and closed simultaneously according to the needs in view of the above-mentioned existing technical status.

[0004] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a lifting type range hood, comprising a fan frame, an outer shell and a smoke collecting hood, the outer shell is arranged on the outside of the fan frame, the smoke collecting hood is arranged at the bottom of the outer shell, and a smoke inlet is opened at the bottom of the smoke collecting hood, characterized in that: the smoke inlet includes a left smoke inlet and a right smoke inlet, and the smoke collecting hood is equipped with a left smoke guide plate and a right smoke guide plate, the left smoke guide plate can open and close the left smoke inlet, and the right smoke guide plate can open and close the right smoke inlet, the outer shell and the smoke collecting hood can perform synchronous lifting movement equivalent to the fan frame under the drive of the driving mechanism, and the left smoke guide plate and the right smoke guide plate can be opened synchronously or opened selectively as the outer shell and the smoke collecting hood descend.

[0005] Preferably, the range hood also includes a transverse support rod and a vertical connecting rod arranged below the transverse support rod, both ends of the transverse support rod are supported on the fan frame, the left side portion of the left smoke guide plate is rotatably connected to the left side of the left smoke inlet, the right side portion of the left smoke guide plate is rotatably connected to the left end of the first connecting rod, the right side portion of the right smoke guide plate is rotatably connected to the right side of the right smoke inlet, the left side portion of the right smoke guide plate is rotatably connected to the right end of the second connecting rod, the right end of the first connecting rod and the left end of the second connecting rod are both rotatably connected to the lower end of the vertical connecting rod, and the upper end of the vertical connecting rod is movably connected to the transverse support rod.

[0006] In order to enable the smoke shield to be opened smoothly on one side, a motor is also installed on the fan frame. The transverse support rod is horizontally arranged and parallel to the front side of the outer shell. The transverse support rod is a screw rod and is installed on the output shaft of the motor. The upper end of the vertical connecting rod is threadedly connected to the transverse support rod. When driven by the motor, the vertical connecting rod can move laterally along the transverse support rod.

[0007] The driving mechanism can have a variety of structures. Preferably, the driving mechanism includes a driving motor, a transmission screw and a nut connecting piece. The transmission screw is vertically arranged and installed on the output shaft of the driving motor. The nut connecting piece is installed on the transmission screw. The outer shell is fixed to the nut connecting piece through a connecting plate. A guide rail assembly with guiding cooperation is provided between the outer shell and the fan frame.

[0008] In order to enable the left smoke guide plate and the right smoke guide plate to be intelligently opened and closed according to the size of the oil smoke, oil smoke sensors are installed on the left smoke inlet and the right smoke inlet, and a controller is also included. The controller can receive the output signal of the oil smoke sensor and can control the working state of the motor and the drive motor accordingly according to the received signal.

[0009] Preferably, when the left smoke shield and the right smoke shield are both closed, the left smoke shield and the right smoke shield are both in a horizontal position, the upper end of the vertical connecting rod is located in the middle of the transverse support rod, and the first connecting rod and the second connecting rod are arranged obliquely relative to the horizontal plane and are symmetrically distributed on both sides of the vertical connecting rod. In this way, when the vertical connecting rod is always located in the middle of the transverse support rod, the opening angles of the smoke shields on both sides can be always the same.

[0010] Further preferably, when the left smoke damper and the right smoke damper are both opened to the maximum angle, the upper end of the vertical connecting rod is located in the middle of the transverse support rod, the first connecting rod and the second connecting rod are symmetrically distributed on both sides of the vertical connecting rod, the left smoke damper and the right smoke damper are distributed in an eight-shaped distribution, and the inclination angle of the first connecting rod and the left smoke damper relative to the horizontal plane is consistent, and the inclination angle of the second connecting rod and the right smoke damper relative to the horizontal plane is consistent.

[0011] In order to smoothly realize the flipping of the left smoke guide plate and the right smoke baffle plate, the left side portion of the left smoke guide plate and the right side portion of the right smoke guide plate are hinged to the smoke collecting hood through the first hinge seat, and the left smoke guide plate and the right smoke guide plate are hinged to the connecting rod on the corresponding side through the second hinge seat.

[0012] In order to avoid mutual interference between the range fumes exhaust fan and the transverse support rod, a range fumes exhaust fan is installed in the fan frame, and the range fumes exhaust fan is arranged above the transverse support rod.

[0013] In order to make the smoke baffle plate sealed with the smoke hood when closed, the left smoke baffle plate, the right smoke baffle plate, the left smoke inlet and the right smoke inlet all have an upper flange

[0014] Compared with the prior art, the advantages of the utility model are that the outer shell and the smoke collecting hood of the lifting type range hood can perform synchronous lifting and lowering movements equivalent to the fan frame under the drive of the driving mechanism, and the left smoke guide plate and the right smoke guide plate can be opened synchronously or opened selectively as the outer shell and the smoke collecting hood descend. When opened synchronously, double opening and double suction can be achieved, which is suitable for cooking with two burners at the same time. When opened selectively, single opening and single suction can be achieved, which is suitable for cooking with one of the burners, thereby achieving better flow distribution function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the range hood according to an embodiment of the utility model (the smoke baffles on both sides are closed);

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of the range hood from another angle;

[0017] Figure 3 for Figure 1The schematic diagram of the internal structure of the range hood shown (without the range hood fan);

[0018] Figure 4 This is a schematic diagram of the structure of the range hood according to an embodiment of the utility model (the smoke baffles on both sides are open);

[0019] Figure 5 for Figure 4 A structural cross-sectional view of the range hood;

[0020] Figure 6 This is a schematic diagram of the structure of the range hood according to an embodiment of the utility model (with the left smoke baffle open);

[0021] Figure 7 This is a schematic diagram of the structure of the range hood according to an embodiment of the utility model (with the right smoke baffle open);

[0022] Figure 8 for Figure 7 A structural cross-sectional view of the range hood shown. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 8 As shown, the lift-type range hood of this embodiment includes main components such as a fan frame 1, an outer shell 2 and a smoke collecting hood 3, wherein a range hood 13 is installed inside the fan frame 1, the outer shell 2 is arranged on the outside of the fan frame 1, and the smoke collecting hood 3 is arranged at the bottom of the outer shell 2. A left smoke inlet 41 and a right smoke inlet 42 are opened at the bottom of the smoke collecting hood 3, and the left smoke inlet 41 and the right smoke inlet 42 are arranged at intervals on the left and right. A left smoke guide plate 51 and a right smoke guide plate 52 are installed on the smoke collecting hood 3, and the left smoke guide plate 51 can open and close the left smoke inlet 41, and the right smoke guide plate 52 can open and close the right smoke inlet 42.

[0025] like Figure 2 As shown, a driving mechanism 6 is installed on the fan frame 1. The driving mechanism 6 of this embodiment is an electric push rod, including a driving motor 61, a transmission screw 62 and a nut connector 63. The transmission screw 62 is vertically arranged and installed on the output shaft of the driving motor 61. The nut connector 63 is installed on the transmission screw 62. The outer shell 2 is fixed to the nut connector 63 through a connecting plate 64. A guide rail assembly 65 for guiding cooperation is provided between the outer shell 2 and the fan frame 1. The outer shell 2 and the smoke hood 3 can perform synchronous lifting and lowering movements equivalent to the fan frame 1 under the drive of the driving mechanism 6.

[0026] In this embodiment, a transverse support rod 7 and a vertical connecting rod 8 are installed inside the fan frame 1, wherein the transverse support rod 7 is horizontally arranged below the range hood fan 13 and parallel to the front of the outer shell 2, and the left and right ends of the transverse support rod 7 are supported on the fan frame 1. A motor 10 is also installed on the fan frame 1, and the transverse support rod 7 is a screw rod and is installed on the output shaft of the motor 10. The upper end of the vertical connecting rod 8 is threadedly connected to the transverse support rod 7. Under the drive of the motor 10, the vertical connecting rod 8 can move laterally along the transverse support rod 7.

[0027] by Figure 5 The direction indicated by the middle arrow A is right, the first connecting rod 91 is arranged on the left side of the vertical connecting rod 8 and is tilted obliquely to the left from top to bottom, the second connecting rod 92 is arranged on the right side of the vertical connecting rod 8 and is tilted obliquely to the right from top to bottom, and the transverse support rod 7, the vertical connecting rod 8, the first connecting rod 91 and the second connecting rod 92 are arranged on a vertical plane parallel to the front of the outer shell 2. The left side of the left smoke guide plate 51 is hinged to the left side of the left smoke inlet 41, and the right side of the right smoke guide plate 52 is hinged to the right side of the right smoke inlet 42. Specifically, a first hinge seat 11 is installed on the smoke hood 3, and the left side of the left smoke guide plate 51 and the right side of the right smoke guide plate 52 are both hinged to the smoke hood 3 through the first hinge seat 11. The right side of the left smoke guide plate 51 is hinged to the left end of the first connecting rod 91 through the second hinge seat 12, and the left side of the right smoke guide plate 52 is also hinged to the right end of the second connecting rod 92 through the second hinge seat 12. The right end of the first connecting rod 91 and the left end of the second connecting rod 92 are both rotatably connected to the lower end of the vertical connecting rod 8.

[0028] Driven by the driving mechanism 6, the left smoke guide plate 51 and the right smoke guide plate 52 can be opened and closed synchronously with the lifting and lowering of the outer shell 2 and the smoke hood 3, that is, the lifting and lowering movement of the outer shell 2 and the smoke hood 3 is converted into the rotational movement of the smoke guide plate, and the lifting and lowering of the smoke hood 3 and the synchronous turning of the smoke guide plate are realized by using one power source, which saves costs. In addition, with the drive of the motor 10, the left smoke guide plate 51 and the right smoke guide plate 52 can be opened selectively.

[0029] like Figures 1 to 3 As shown, the left smoke guide plate 51 and the right smoke guide plate 52 are both in a closed state, and the range hood is in a turned-off state. At this time, the outer shell 2 and the smoke hood 3 are raised to the highest position, the left smoke guide plate 51 and the right smoke guide plate 52 are both in a horizontal position, the upper end of the vertical connecting rod 8 is located in the middle of the transverse support rod 7, and the first connecting rod 91 and the second connecting rod 92 are inclined relative to the horizontal plane and are symmetrically distributed on both sides of the vertical connecting rod 8. In addition, the left smoke guide plate 51, the right smoke guide plate 52, the left smoke inlet 41 and the right smoke inlet 42 of this embodiment all have an upper flange 14. When the smoke guide plate is closed, the corresponding upper flange 14 is used to achieve sealing to prevent oil smoke from entering the kitchen from the public flue.

[0030] like Figure 4 and Figure 5 As shown, the left smoke guide plate 51 and the right smoke guide plate 52 are both in the open state and are both opened to the maximum angle, and the range hood is in a working state with large oil smoke conditions. At this time, the outer shell 2 and the smoke hood 3 are lowered to the lowest position, the upper end of the vertical connecting rod 8 is located in the middle of the horizontal support rod 7, the first connecting rod 91 and the second connecting rod 92 are symmetrically distributed on both sides of the vertical connecting rod 8, the left smoke guide plate 51 and the right smoke guide plate 52 are distributed in an eight-shaped shape, and the first connecting rod 91 and the left smoke guide plate 51 have the same inclination angle relative to the horizontal plane, and the second connecting rod 92 and the right smoke guide plate 52 have the same inclination angle relative to the horizontal plane. As a result, the left smoke inlet 41 and the right smoke inlet 42 are opened, and after the left smoke guide plate 51 and the right smoke guide plate 52 are opened, the oil smoke flows along the surface of the smoke guide plate and is guided into the interior of the range hood with basically no resistance, because the stove is generally a double-burner type, and each burner is just facing the corresponding smoke inlet of the smoke hood 3. When the smoke hood 3 is lowered, the distance between the smoke inlet and the burner is closer, and the negative pressure area is significantly reduced, which has a significant effect on improving the oil fume extraction effect of the range hood.

[0031] In this embodiment, oil fume sensors are installed at both the left smoke inlet 41 and the right smoke inlet 42, and the controller can receive the output signal of the oil fume sensors. According to different oil fume working conditions, the controller controls the driving motor 61 to make the outer shell 2 and the smoke hood 3 drop to a suitable height, thereby controlling the opening angles of the left smoke guide plate 51 and the right smoke guide plate 52. When the oil fume sensor detects that the amount of oil fume is greater than the set value, the smoke hood 3 can automatically drop, and at the same time drive the smoke guide plate to rotate and open. The greater the amount of oil fume, the lower the smoke hood 3 can drop, and the greater the angle of the smoke guide plate, the better the overall smoking effect of the range hood. When the amount of oil fume becomes smaller, the smoke hood 3 can rise, and the opening angle of the smoke guide plate also becomes smaller, thereby achieving the effect of intelligently lifting the smoke hood and flipping the smoke guide plate to control the oil fume.

[0032] like Figure 6 As shown, the left smoke inlet 41 is open, which corresponds to the cooking situation of the left stove head.

[0033] like Figure 7 and Figure 8 As shown, the right smoke inlet 42 is open, which corresponds to the cooking situation of the right stove head.

[0034] Take the right smoke inlet 42 as an example, combined with Figure 3 and Figure 8, the driving mechanism 6 drives the outer shell 2 and the smoke hood 3 to move downward. At the same time, the motor 10 drives the horizontal support rod 7 to rotate and drives the vertical connecting rod 8 to move to the left. At this time, the left smoke inlet 41 can continue to be in a closed state, while the right smoke inlet 42 is in an open state. Conversely, the vertical connecting rod 8 moves to the right, which can open the left smoke inlet 41 and close the right smoke inlet 42. The controller can control the driving motor 61 and the motor 10 according to the signal received from the oil fume sensor to achieve single opening and single suction, and realize a better flow distribution function. In the case where only one smoke guide plate is opened, according to the relationship between the cross-sectional area and the flow rate, the flow rate is accelerated at this time, which can accelerate the discharge of oil fume.

[0035] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A lifting range hood, comprising a fan frame (1), an outer shell (2) and a smoke collecting hood (3), wherein the outer shell (2) is arranged on the outside of the fan frame (1), the smoke collecting hood (3) is arranged at the bottom of the outer shell (2), and a smoke inlet is opened at the bottom of the smoke collecting hood (3), characterized in that: The smoke inlet comprises a left smoke inlet (41) and a right smoke inlet (42); a left smoke guide plate (51) and a right smoke guide plate (52) are mounted on the smoke collecting hood (3); the left smoke guide plate (51) can open and close the left smoke inlet (41); the right smoke guide plate (52) can open and close the right smoke inlet (42); the outer shell (2) and the smoke collecting hood (3) can perform synchronous lifting movement equivalent to the fan frame (1) under the drive of the driving mechanism (6); the left smoke guide plate (51) and the right smoke guide plate (52) can be opened synchronously or opened selectively as the outer shell (2) and the smoke collecting hood (3) descend.

2. The lifting type range hood according to claim 1, characterized in that: It also includes a transverse support rod (7) and a vertical connecting rod (8) arranged below the transverse support rod (7), the two ends of the transverse support rod (7) are supported on the fan frame (1), the left side portion of the left smoke guide plate (51) is rotatably connected to the left side of the left smoke inlet (41), the right side portion of the left smoke guide plate (51) is rotatably connected to the left end of the first connecting rod (91), the right side portion of the right smoke guide plate (52) is rotatably connected to the right side of the right smoke inlet (42), the left side portion of the right smoke guide plate (52) is rotatably connected to the right end of the second connecting rod (92), the right end of the first connecting rod (91) and the left end of the second connecting rod (92) are both rotatably connected to the lower end of the vertical connecting rod (8), and the upper end of the vertical connecting rod (8) is movably connected to the transverse support rod (7).

3. The lifting type range hood according to claim 2, characterized in that: A motor (10) is also installed on the fan frame (1); the transverse support rod (7) is arranged horizontally and parallel to the front side of the outer shell (2); the transverse support rod (7) is a screw rod and is installed on the output shaft of the motor (10); the upper end of the vertical connecting rod (8) is threadedly connected to the transverse support rod (7); under the drive of the motor (10), the vertical connecting rod (8) can move laterally along the transverse support rod (7).

4. The lifting type range hood according to claim 3, characterized in that: The driving mechanism (6) comprises a driving motor (61), a transmission screw (62) and a nut connecting piece (63); the transmission screw (62) is vertically arranged and mounted on the output shaft of the driving motor (61); the nut connecting piece (63) is mounted on the transmission screw (62); the outer shell (2) is fixed to the nut connecting piece (63) via a connecting plate (64); and a guide rail assembly (65) for guiding cooperation is provided between the outer shell (2) and the fan frame (1).

5. The lifting type range hood according to claim 4, characterized in that: The left smoke inlet (41) and the right smoke inlet (42) are both equipped with oil smoke sensors, and also include a controller, which can receive output signals from the oil smoke sensors and can control the working states of the motor and the drive motor (61) accordingly according to the received signals.

6. The lifting type range hood according to claim 3, characterized in that: When the left smoke guide plate (51) and the right smoke guide plate (52) are both closed, the left smoke guide plate (51) and the right smoke guide plate (52) are both in a horizontal position, the upper end of the vertical connecting rod (8) is located in the middle of the transverse support rod (7), and the first connecting rod (91) and the second connecting rod (92) are inclined relative to the horizontal plane and are symmetrically distributed on both sides of the vertical connecting rod (8).

7. The lifting type range hood according to claim 3, characterized in that: When the left smoke guide plate (51) and the right smoke guide plate (52) are both opened to the maximum angle, the upper end of the vertical connecting rod (8) is located in the middle of the transverse support rod (7), the first connecting rod (91) and the second connecting rod (92) are symmetrically distributed on both sides of the vertical connecting rod (8), the left smoke guide plate (51) and the right smoke guide plate (52) are distributed in an eight-shaped shape, and the first connecting rod (91) and the left smoke guide plate (51) have the same inclination angle relative to the horizontal plane, and the second connecting rod (92) and the right smoke guide plate (52) have the same inclination angle relative to the horizontal plane.

8. The lifting type range hood according to claim 2, characterized in that: The left side portion of the left smoke guide plate (51) and the right side portion of the right smoke guide plate (52) are both hinged to the smoke collecting hood (3) via a first hinge seat (11), and the left smoke guide plate (51) and the right smoke guide plate (52) are both hinged to the connecting rod on the corresponding side via a second hinge seat (12).

9. The lifting type range hood according to claim 2, characterized in that: A fume extractor fan (13) is installed in the fan frame (1), and the fume extractor fan (13) is arranged above the transverse support rod (7).

10. The lifting type range hood according to any one of claims 1 to 9, characterized in that: The left smoke guide plate (51), the right smoke guide plate (52), the left smoke inlet (41) and the right smoke inlet (42) all have an upper flange (14).

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