Range hood

Abstract

A range hood comprises a shell, a smoke exhaust cavity is formed in the shell, a panel is arranged on the front side of the shell, and an opening is formed in the position, located below the panel, of the front side of the shell and serves as a smoke inlet of the smoke exhaust cavity; the smoke barrier moving device comprises a smoke barrier and a moving device body, and the moving device body comprises a driving mechanism and a driving mechanism. The transmission shaft can rotate around the axis of the transmission shaft under the action of the driving mechanism; the two groups of transmission mechanisms are respectively connected with the end parts of the corresponding transmission shafts, the two groups of transmission mechanisms can synchronously move under the action of the transmission shafts so as to convert the power of the output end of the driving mechanism into motion of the smoke barrier, and the smoke barrier can move to a closing position and an opening position for closing the smoke inlet; the panel is opposite to the front side wall of the smoke exhaust cavity in a front-back spaced mode to form a gap, the transmission shaft is arranged in the gap, and installation cavities are further formed in the positions, corresponding to the two ends of the transmission shaft, in the shell so that all transmission mechanisms can be arranged in the installation cavities. The stability of the smoke barrier moving device can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and in particular relates to a range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It can quickly remove the waste from stove combustion and the fumes generated during cooking and discharge them outdoors, reduce pollution, and purify the air. The smoke inlet of an existing range hood is usually provided with a movable smoke shield. When closed, the smoke shield can cover the smoke inlet. When opened, the smoke shield exposes the smoke inlet. At the same time, some smoke shields can also collect smoke, reducing the risk of fumes escaping.

[0003] For example, the Chinese utility model patent "A Range Hood" with patent number 202220590316.0 (authorization announcement number CN217274376U) discloses a range hood, including a smoke hood, with an air inlet opened on the front side of the smoke hood, the range hood also including a smoke baffle that can be flipped to open or close the air inlet, and a motion mechanism assembly for driving the smoke baffle to move, the motion mechanism assembly including a first motion mechanism, the first motion mechanism including a driving mechanism, a first connecting rod, a second connecting rod and a transmission shaft, the transmission shaft is extended left and right in the smoke hood, the driving mechanism is used to drive the transmission shaft to rotate around its own axis, one end of the first connecting rod is fixed to the transmission shaft and the other end is connected to the smoke baffle, one end of the second connecting rod is rotatably arranged in the smoke hood and the other end is connected to the smoke baffle.

[0004] For example, the Chinese invention patent "A range hood" with patent number 202010789329.6 (authorization announcement number CN112539436B) discloses a smoke shield movement mechanism, including a smoke shield and a movement mechanism for driving the smoke shield to move, the movement mechanism includes a driving mechanism and a transmission mechanism for transmitting the output of the driving mechanism to the smoke shield, the transmission mechanism includes a first hinge and a second hinge, one of the first hinge and the second hinge is a driving arm driven by the driving mechanism, the other of the first hinge and the second hinge is a driven arm, one end of the first hinge is hinged to the smoke shield, one end of the second hinge is hinged to the smoke shield, and the first hinge and the second hinge are respectively arranged above and below the hinge position of the smoke shield.

[0005] Existing motion devices for driving the smoke baffle to move are often contaminated by oil smoke, which affects the stability during use. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a range hood in view of the current status of the prior art, so as to improve the stability of the smoke baffle movement device.

[0007] The technical solution adopted by the utility model to solve the above technical problems is: a range hood, comprising:

[0008] A shell body having a smoke exhaust cavity inside, a panel is provided on the front side of the shell body, an opening is provided on the front side of the shell body below the panel, and the opening is a smoke inlet of the smoke exhaust cavity;

[0009] A smoke shield moving device comprises a smoke shield and a moving device for driving the smoke shield to move, wherein the moving device comprises:

[0010] Driving mechanism;

[0011] A transmission shaft extending left and right, which can rotate around its own axis under the action of a driving mechanism;

[0012] Two sets of transmission mechanisms are respectively connected to the ends of corresponding transmission shafts. The two sets of transmission mechanisms can move synchronously under the action of the transmission shafts to convert the power of the output end of the driving mechanism into the movement of the smoke baffle, and the smoke baffle can move to a closed position to close the smoke inlet and an open position to open the smoke inlet;

[0013] Features:

[0014] The panel and the front side wall of the smoke exhaust chamber are spaced from each other to form a gap, the gap is independent of the smoke exhaust chamber, and the transmission shaft is arranged in the gap;

[0015] The housing further has mounting cavities at positions corresponding to the two ends of the transmission shaft. The two mounting cavities are respectively located on the left and right sides of the smoke exhaust cavity and are independent of the smoke exhaust cavity so that each transmission mechanism can be arranged therein.

[0016] In this way, the transmission shaft is located in the gap at the front side of the smoke exhaust chamber, and the two sets of transmission mechanisms are located in the installation chambers on the left and right sides of the smoke exhaust chamber, so that the transmission shaft and the transmission mechanism can be protected from the pollution of oil smoke in the smoke exhaust chamber, thereby improving the working stability of the smoke baffle movement device and the life of the whole machine. In addition, the movement device of the utility model can avoid the smoke exhaust chamber, reduce the impact on the airflow in the smoke exhaust chamber, and ensure the oil smoke absorption effect.

[0017] Preferably, when the smoke shield is in the open position, at least part of the smoke shield is located on the front side of the panel.

[0018] Preferably, the transmission mechanism is a four-bar mechanism, including a support beam arranged in the installation cavity and fixed relative to the shell, a first link as an active arm, a second link as a driven arm, and a connecting rod, wherein the connecting rod extends up and down and is fixed relative to the smoke baffle, the first end of the first link is connected to the transmission shaft and can rotate with the transmission shaft, the second end of the first link is rotatably connected to the upper end of the connecting rod and the rotation axis extends left and right, the first end of the second link is rotatably connected to the lower end of the connecting rod and the rotation axis extends left and right, and the second end of the second link is rotatably connected to the support beam and the rotation axis extends left and right.

[0019] Thereby, the moving device can drive the smoke baffle to move from the smoke inlet to the front side of the panel.

[0020] Since the transmission shaft of the utility model is located in the gap at the front side of the smoke exhaust chamber, that is, the transmission shaft is arranged relatively forward, at this time, in order to adapt to the position of the transmission shaft and to better drive the smoke baffle to move, preferably, the first connecting rod is U-shaped, having a first section and a second section arranged side by side and a connecting section connecting the two, and the end of the first section is the first end of the first connecting rod, and the end of the second section is the second end of the first connecting rod;

[0021] The second connecting rod is in the shape of an elongated strip;

[0022] When the smoke baffle is in the open position, the first section of the first connecting rod is located at the rear side of the second section, and the U-shaped opening of the first connecting rod faces upward, the second connecting rod is inclined upward from front to back, the front end of the second connecting rod is the first end of the second connecting rod, and the rear end of the second connecting rod is the second end of the second connecting rod;

[0023] When the smoke baffle is in a closed position, the first section of the first connecting rod is located in front of the second section, and the U-shaped opening of the first connecting rod faces downward, the second connecting rod is inclined forward from bottom to top, the lower end of the second connecting rod is the first end of the second connecting rod, and the upper end of the second connecting rod is the second end of the second connecting rod.

[0024] Furthermore, an extension length of the second section of the first connecting rod is greater than an extension length of the first section and less than an extension length of the second connecting rod.

[0025] Furthermore, both ends of the transmission shaft pass through corresponding support beams respectively and are rotatably supported on the support beams.

[0026] Preferably, the side wall of the first section of the first connecting rod is provided with a first limiting protrusion, and when the smoke shield is in the open position, the first limiting protrusion abuts against the lower side of the support beam, thereby limiting the first section of the first connecting rod from further upward movement, ensuring that the smoke shield is in the open position.

[0027] Preferably, the side wall of the second section of the first connecting rod is provided with a second limiting protrusion, and when the smoke shield is in the closed position, the second limiting protrusion abuts against the front side of the second connecting rod. At this time, the second limiting protrusion can play a role in assisting the closing of the smoke shield.

[0028] In the above schemes, preferably, the driving mechanism is arranged in one of the installation cavities, and its output end acts on the transmission shaft.

[0029] Preferably, the driving mechanism includes an electric push rod, whose cylinder is rotatably connected to the housing and whose rotation axis extends left and right; and a crank, one end of which is rotatably connected to the rod body of the electric push rod and whose rotation axis extends left and right, and the other end of which is connected to the transmission shaft, for converting the telescopic power of the rod body of the electric push rod into rotating the transmission shaft. The electric push rod has a better thrust effect, a more stable force application process, and a lower maintenance rate.

[0030] Preferably, the panel is inclined forward from bottom to top; and the smoke baffle is inclined forward from bottom to top.

[0031] Compared with the prior art, the advantages of the utility model are: the transmission shaft is located in the gap at the front side of the smoke exhaust chamber, and the two sets of transmission mechanisms are located in the installation chambers on the left and right sides of the smoke exhaust chamber, so that the transmission shaft and the transmission mechanism can be protected from the pollution of oil smoke in the smoke exhaust chamber, the working stability of the smoke baffle movement device is improved, and the life of the whole machine is increased. In addition, the movement device of the utility model can avoid the smoke exhaust chamber, reduce the impact on the airflow in the smoke exhaust chamber, and ensure the oil smoke absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model (the smoke baffle is in the open position);

[0033] Figure 2 It is a cross-sectional view of a partial structure of an embodiment of the utility model (the cross-section is a vertical plane extending front and back, and the smoke baffle is in an open position);

[0034] Figure 3 Another cross-sectional view of the local structure of an embodiment of the utility model (the cross-section is a vertical plane extending front and back, and the smoke baffle is in the open position);

[0035] Figure 4 It is another cross-sectional view of the local structure of an embodiment of the utility model (the cross-section is a horizontal plane, and the smoke baffle is in the open position);

[0036] Figure 5 This is a structural schematic diagram of the smoke shield movement device of an embodiment of the utility model (the smoke shield is in the open position);

[0037] Figure 6This is a schematic diagram of the structure of an embodiment of the utility model (the smoke baffle is in a closed position);

[0038] Figure 7 It is a cross-sectional view of the local structure of an embodiment of the utility model (the cross-section is a vertical plane extending front and back, and the smoke baffle is in a closed position);

[0039] Figure 8 This is a schematic diagram of the structure of the panel and smoke shield movement device of an embodiment of the utility model (the smoke shield is in the closed position);

[0040] Fig. 9 It is a partial structural schematic diagram of the smoke shield movement device of an embodiment of the utility model (the smoke shield is omitted, and the smoke shield is in a closed position at this time). DETAILED DESCRIPTION

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0042] like Figures 1 to 9 As shown, a preferred embodiment of a range hood of the utility model is shown, and the range hood comprises a housing 1 and a smoke baffle moving device.

[0043] Among them, the shell 1 has an independent smoke exhaust chamber 11 and an installation chamber 12 located on the left and right sides of the smoke exhaust chamber 11. The front side of the shell 1 is provided with a panel 13 (the panel 13 is inclined forward from bottom to top), and the front side of the shell 1 is provided with an opening below the panel 13, which is the smoke inlet 110 of the smoke exhaust chamber 11; the panel 13 and the front side wall of the smoke exhaust chamber 11 are spaced apart from each other in front and back to form a gap 14, and the gap 14 is independent of the smoke exhaust chamber 11.

[0044] The smoke baffle plate moving device comprises a smoke baffle plate 2 and a moving device for driving the smoke baffle plate 2 to move. The moving device comprises a driving mechanism 3, a transmission shaft 4 and two sets of transmission mechanisms 5.

[0045] The transmission shaft 4 extends leftward and rightward and is disposed in the gap 14 .

[0046] The driving mechanism 3 is arranged in one of the installation cavities 12, and includes an electric push rod, a cylinder body 31 of the electric push rod is rotatably connected to the housing 1 and the rotation axis extends left and right; it also includes a crank 30, one end of which is rotatably connected to the rod body 32 of the electric push rod and the rotation axis extends left and right, and the other end of which is connected to the transmission shaft 4, and is used to convert the telescopic power of the rod body 32 of the electric push rod into causing the transmission shaft 4 to rotate around its own axis.

[0047] There are two groups of the transmission mechanism 5, which are respectively arranged in the corresponding installation cavity 12 and connected to the corresponding end of the transmission shaft 4. The two groups of transmission mechanisms 5 can move synchronously under the action of the transmission shaft 4 to convert the power of the output end of the driving mechanism 3 into the movement of the smoke damper 2, and the smoke damper 2 can move to the closed position of closing the smoke inlet 110 and the open position of opening the smoke inlet 110. When the smoke damper 2 is in the open position, the smoke damper 2 is located at the front side of the panel 13. When the smoke damper 2 is in the closed position, the smoke damper 2 tilts forward from bottom to top.

[0048] In this embodiment, the two transmission mechanisms have the same structure and are both four-bar linkages. The four-bar linkages include a support beam 50 disposed in the mounting cavity 12 and fixed relative to the housing 1, a first link 51 as an active arm, a second link 52 as a driven arm, and a connecting rod 53. The support beam 50 extends forward and backward, and allows the corresponding end of the transmission shaft 4 to pass through and be rotatably supported thereon (in order to enable the end of the transmission shaft 4 to be rotatably supported on the support beam 50, the support beam 50 is provided with a circular hole that passes through in the horizontal direction (i.e., in the left and right directions), and the cross section of the main part of the transmission shaft 4 located between the two ends is circular, and the cross section of the end of the transmission shaft 4 is non-circular, so that the main part of the transmission shaft can be rotatably supported on the support beam 5, and the end can drive the transmission mechanism 5 to move). The connecting rod 53 extends up and down and is disposed on the rear side of the smoke baffle and fixed relative to the smoke baffle 2. The second connecting rod 52 is in the shape of an elongated strip, and its first end is rotatably connected to the lower end of the connecting rod 53 and the rotation axis extends left and right, and its second end is rotatably connected to the support beam 50 and the rotation axis extends left and right. The first connecting rod 51 is U-shaped, and has a first section 511, a second section 512 and a connecting section 513 arranged side by side, and the extension length of the second section 512 is greater than the extension length of the first section 511, and less than the extension length of the second connecting rod 52. The end of the first section 511 is connected to the end of the transmission shaft 4 and can rotate with the transmission shaft 4 (the end of the first section 511 is provided with a non-circular hole, and the end of the transmission shaft 4 passes through the non-circular hole and connects the two by fasteners such as screws), and the end of the second section 512 is rotatably connected to the upper end of the connecting rod 53, and the rotation axis extends left and right.

[0049] like Figures 1 to 5 As shown, when the smoke baffle 2 is in the open position, the first section 511 of the first connecting rod 51 is located at the rear side of the second section 512, and the U-shaped opening of the first connecting rod 51 faces upward, and the second connecting rod 52 is inclined upward from front to back, and the front end of the second connecting rod 52 is the first end of the second connecting rod 52, and the rear end of the second connecting rod 52 is the second end of the second connecting rod 52;

[0050] like Figures 6 to 9As shown, when the smoke baffle 2 is in the closed position, the first section 511 of the first connecting rod 51 is located in front of the second section 512, and the U-shaped opening of the first connecting rod 51 faces downward, and the second connecting rod 52 is inclined forward from bottom to top, and the lower end of the second connecting rod 52 is the first end of the second connecting rod 52, and the upper end of the second connecting rod 52 is the second end of the second connecting rod 52.

[0051] At the same time, in this embodiment, the side wall of the first section 511 of the first connecting rod 51 is provided with a first limiting protrusion 514. When the smoke shield 2 is in the open position, the first limiting protrusion 514 abuts against the bottom of the support beam 50, thereby ensuring that the smoke shield 2 is fully opened. The side wall of the second section 512 of the first connecting rod 51 is provided with a second limiting protrusion 515. When the smoke shield 2 is in the closed position, the second limiting protrusion 515 abuts against the front side of the second connecting rod 52, thereby assisting the smoke shield to be closed.

[0052] The motion device of this embodiment can drive the smoke shield 2 to perform translation + rotation movement, reducing the risk of the smoke shield 2 hitting the pot during movement. In addition, the installation space required for the motion device is small, and the adaptability of the internal space layout of the range hood is better. At the same time, the left and right transmission mechanisms 5 are connected by the transmission shaft 4 to ensure the synchronization of the left and right transmission mechanisms 5, reduce the gap between the smoke shield 2 and the shell when it is in the closed position, and improve the texture.

Claims

1. A range hood, comprising: A shell (1) having a smoke exhaust chamber (11) therein, and a panel (13) is provided on the front side of the shell (1); an opening is provided on the front side of the shell (1) below the panel (13), and the opening is a smoke inlet (110) of the smoke exhaust chamber (11); A smoke shield moving device comprises a smoke shield (2) and a moving device for driving the smoke shield (2) to move, wherein the moving device comprises: Driving mechanism (3); A transmission shaft (4) extending left and right, which can rotate around its own axis under the action of the driving mechanism (3); Two sets of transmission mechanisms (5) are respectively connected to the ends of corresponding transmission shafts (4); the two sets of transmission mechanisms (5) can move synchronously under the action of the transmission shafts (4) to convert the power of the output end of the driving mechanism (3) into the movement of the smoke baffle (2); and the smoke baffle (2) can move to a closed position for closing the smoke inlet (110) and an open position for opening the smoke inlet (110); Features: The panel (13) and the front side wall of the smoke exhaust chamber (11) are spaced from each other to form a gap (14), the gap (14) and the smoke exhaust chamber (11) are independent of each other, and the transmission shaft (4) is arranged in the gap (14); The housing (1) further comprises mounting cavities (12) at positions corresponding to the two ends of the transmission shaft (4); the two mounting cavities (12) are respectively located on the left and right sides of the smoke exhaust cavity (11) and are independent of the smoke exhaust cavity (11) so as to accommodate each transmission mechanism (5) therein.

2. The range hood according to claim 1, characterized in that: When the smoke baffle (2) is located in the open position, at least a portion of the smoke baffle (2) is located on the front side of the panel (13).

3. The range hood according to claim 2, characterized in that: The transmission mechanism (5) is a four-bar linkage, comprising a support beam (50) disposed in the mounting cavity (12) and fixed relative to the housing (1), a first link (51) as an active arm, a second link (52) as a driven arm, and a connecting rod (53), wherein the connecting rod (53) extends up and down and is fixed relative to the smoke baffle (2), wherein the first end of the first link (51) is connected to the transmission shaft (4) and can rotate with the transmission shaft (4), the second end of the first link (51) is rotationally connected to the upper end of the connecting rod (53) and the rotation axis extends left and right, the first end of the second link (52) is rotationally connected to the lower end of the connecting rod (53) and the rotation axis extends left and right, and the second end of the second link (52) is rotationally connected to the support beam (50) and the rotation axis extends left and right.

4. The range hood according to claim 3, characterized in that: The first connecting rod (51) is U-shaped, and comprises a first section (511), a second section (512) arranged side by side, and a connecting section (513) connecting the first section (511), and the end of the first section (511) is the first end of the first connecting rod (51), and the end of the second section (512) is the second end of the first connecting rod (51); The second connecting rod (52) is in the shape of an elongated strip; When the smoke baffle (2) is in the open position, the first section (511) of the first connecting rod (51) is located at the rear side of the second section (512), and the U-shaped opening of the first connecting rod (51) faces upward, and the second connecting rod (52) is inclined upward from front to back, and the front end of the second connecting rod (52) is the first end of the second connecting rod (52), and the rear end of the second connecting rod (52) is the second end of the second connecting rod (52); When the smoke baffle (2) is in a closed position, the first section (511) of the first connecting rod (51) is located in front of the second section (512), and the U-shaped opening of the first connecting rod (51) faces downward, and the second connecting rod (52) is inclined forward from bottom to top, and the lower end of the second connecting rod (52) is the first end of the second connecting rod (52), and the upper end of the second connecting rod (52) is the second end of the second connecting rod (52).

5. The range hood according to claim 4, characterized in that: The extension length of the second section (512) of the first connecting rod (51) is greater than the extension length of the first section (511) and less than the extension length of the second connecting rod (52).

6. The range hood according to claim 4, characterized in that: Both ends of the transmission shaft (4) pass through corresponding support beams (50) respectively and are rotatably supported on the support beams (50).

7. The range hood according to claim 6, characterized in that: A first limiting protrusion (514) is provided on the side wall of the first section (511) of the first connecting rod (51). When the smoke baffle (2) is in the open position, the first limiting protrusion (514) abuts against the bottom of the supporting beam (50).

8. The range hood according to claim 6, characterized in that: A second limiting protrusion (515) is provided on the side wall of the second section (512) of the first connecting rod (51). When the smoke baffle (2) is in the closed position, the second limiting protrusion (515) abuts against the front side of the second connecting rod (52).

9. The range hood according to any one of claims 1 to 8, characterized in that: The driving mechanism (3) is arranged in one of the installation cavities (12), and its output end acts on the transmission shaft (4).

10. The range hood according to claim 9, characterized in that: The driving mechanism (3) includes an electric push rod, whose cylinder body (31) is rotatably connected to the housing (1) and the rotation axis extends left and right; and also includes a crank (30), one end of which is rotatably connected to the rod body (32) of the electric push rod and the rotation axis extends left and right, and the other end of which is connected to the transmission shaft (4) for converting the telescopic power of the rod body (32) of the electric push rod into rotating the transmission shaft (4).

11. The range hood according to any one of claims 1 to 8, characterized in that: The panel (13) is inclined forward from bottom to top; and the smoke baffle (2) is inclined forward from bottom to top.

Images