Range hood

Abstract

The present invention provides a range hood, which relates to the technical field of kitchen appliances. The range hood provided by the present invention comprises a casing, a fixed chamber, a rotating chamber assembly and a driving mechanism; the fixed chamber is installed at the lower end of the casing and communicated with the casing, the rotating chamber assembly is rotatably connected and communicated with the fixed chamber, the driving mechanism is transmission-connected with the rotating chamber assembly, and the driving mechanism is used to drive the rotating chamber assembly to rotate relative to the fixed chamber. The present invention alleviates the technical problem in the related art that it is inconvenient to adjust the angle of the smoking port, resulting in poor smoking effect.

Description

Technical Field

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

[0002] At present, most of the stoves in Chinese kitchens are double stoves. However, when a single stove is used, the oil smoke is concentrated on one side of the range hood, so that a large amount of oil smoke is only generated on one side, and the smoke outlet on the other side has a relatively small effect on the smoking effect, and the oil smoke is easy to escape. In order to solve the above technical problems, a manual flap, an air curtain or a lowered smoke baffle is usually provided on the range hood so that the position of the smoke outlet can be moved. However, the existing range hood is not convenient for adjusting the angle of the smoke outlet, so that the negative pressure of the inlet has a small pulling effect on the oil smoke, and the smoking effect is not good. Summary of the invention

[0003] The object of the present invention is to provide a range hood to alleviate the technical problem in the related art that it is inconvenient to adjust the angle of the smoke intake port, resulting in poor smoking effect.

[0004] The range hood provided by the present invention comprises: a housing, a fixed cavity, a rotating cavity assembly and a driving mechanism;

[0005] The fixed cavity is installed at the lower end of the casing and is connected to the casing. The rotating cavity assembly is rotationally connected and connected to the fixed cavity. The driving mechanism is transmission-connected to the rotating cavity assembly. The driving mechanism is used to drive the rotating cavity assembly to rotate relative to the fixed cavity.

[0006] In an optional embodiment, more preferably, the range hood further comprises a smoke baffle assembly, wherein the smoke baffle assembly is mounted on the rotating chamber assembly, and the smoke baffle assembly is provided with a smoke inlet.

[0007] In an optional embodiment, more preferably, the rotating chamber assembly includes a flexible inner chamber;

[0008] The flexible inner cavity is installed in the fixed cavity, and at least one end of the flexible inner cavity can extend out of the fixed cavity. The flexible inner cavity is respectively sealed and connected to the casing and the smoke baffle assembly to form a smoking channel. The driving mechanism is installed in the flexible inner cavity and is transmission-connected to the smoke baffle assembly.

[0009] In an optional embodiment, more preferably, the smoke baffle assembly includes a first smoke baffle and a second smoke baffle connected by a rotating hinge;

[0010] The first smoke baffle and the second smoke baffle are both sealedly connected to the lower edge of the flexible inner cavity, and at least one of them is rotationally connected to the fixed cavity (201), and the driving mechanism is correspondingly transmission-connected to the first smoke baffle and / or the second smoke baffle.

[0011] In an optional embodiment, more preferably, the driving mechanism includes a first motor, a swing push rod and an elastic member;

[0012] The first motor is installed in the flexible inner cavity (301), one end of the swing push rod is fixed on the output shaft of the first motor, and the other end of the swing push rod is respectively abutted against the first smoke shield and the second smoke shield, and the elastic member is arranged in the flexible inner cavity, and the elastic member enables the first smoke shield and the second smoke shield to have a movement tendency to be accommodated in the fixed cavity.

[0013] In an optional embodiment, more preferably, the swing push rod includes a fixed sleeve, a first push rod and a second push rod;

[0014] The fixed sleeve is fixed to the output shaft of the first motor, the first push rod and the second push rod are connected to the fixed sleeve, one end of the first push rod away from the fixed sleeve abuts against the first smoke baffle, and one end of the second push rod away from the fixed sleeve abuts against the second smoke baffle.

[0015] In an optional embodiment, more preferably, the elastic member includes a first tension spring and a second tension spring;

[0016] One end of the first tension spring is connected to the first smoke baffle, and the other end is connected to the casing; one end of the second tension spring is connected to the second smoke baffle, and the other end is connected to the casing.

[0017] In an optional embodiment, more preferably, the rotating chamber assembly includes a first rotating chamber and a second rotating chamber;

[0018] The first rotating cavity and the second rotating cavity are respectively rotatably connected to the two ends of the fixed cavity, both ends of the side wall of the fixed cavity are provided with a first arc surface, and the first rotating cavity and the second rotating cavity are respectively provided with a second arc surface that slidably cooperates with the first arc surface.

[0019] In an optional embodiment, more preferably, the fixed cavity includes a main body, a top plate and a bottom plate, the main body is mounted on the casing, the top plate and the bottom plate are arranged on the main body, sealing plates are arranged at both ends of the top plate and the bottom plate, the sealing plates are arc-shaped and are coaxial with the first arc surface of the corresponding end, and there is a gap between the two sealing plates at the same end, and the first rotating cavity and the second rotating cavity are connected to the fixed cavity through the gap.

[0020] In an optional embodiment, more preferably, flexible seals are provided at the edges of the first rotating chamber and the second rotating chamber, and the flexible seals abut against the sealing plate.

[0021] In an optional embodiment, more preferably, the smoke baffle assembly includes a third smoke baffle and a fourth smoke baffle;

[0022] The third smoke baffle is installed in the first rotating chamber, the fourth smoke baffle is installed in the second rotating chamber, and the driving mechanism is drivingly connected with the third smoke baffle and the fourth smoke baffle.

[0023] In an optional embodiment, more preferably, the driving mechanism includes a second motor, a third motor, a third push rod and a fourth push rod;

[0024] The second motor and the third motor are respectively installed at the two ends of the fixed cavity, one end of the third push rod is fixedly connected to the output shaft of the second motor, and the other end is hinged to the third smoke shield. One end of the fourth push rod is fixed to the output shaft of the third motor, and the other end is hinged to the fourth smoke shield.

[0025] By adopting the above technical solution, the present invention can achieve the following beneficial effects:

[0026] The range hood provided by the embodiment of the present invention comprises a housing, a fixed chamber, a rotating chamber assembly and a driving mechanism; the fixed chamber is installed at the lower end of the housing and is connected to the housing, the rotating chamber assembly is rotationally connected and connected to the fixed chamber, the driving mechanism is transmission-connected to the rotating chamber assembly, and the driving mechanism is used to drive the rotating chamber assembly to rotate relative to the fixed chamber. When the range hood is working, the driving mechanism drives the rotating chamber assembly to rotate, and a smoke collection area is formed between the rotating chamber assembly and the fixed chamber, thereby improving the traction of the oil smoke flow and enhancing the overall smoke collection effect of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the exploded structure of a range hood provided in Embodiment 1 of the present invention;

[0029] Figure 2 A bottom view of the range hood provided in Embodiment 1 of the present invention;

[0030] Figure 3 for Figure 2 Sectional view at AA;

[0031] Figure 4 for Figure 3 A magnified view of the local structure of part B;

[0032] Figure 5 A schematic diagram of the working principle of the range hood provided in the first embodiment of the present invention;

[0033] Figure 6 A schematic diagram of the structure of a range hood provided in Embodiment 2 of the present invention;

[0034] Figure 7 A partial structural schematic diagram of a range hood provided in Embodiment 2 of the present invention;

[0035] Figure 8 A partially exploded schematic diagram of a range hood provided in Embodiment 2 of the present invention;

[0036] Fig. 9 for Figure 8 A magnified view of the local structure of part C;

[0037] Fig.10 A schematic diagram of the working principle of the range hood provided in the second embodiment of the present invention;

[0038] Fig.11 A schematic diagram of a working scenario of a range hood provided in an embodiment of the present invention.

[0039] Icon: 100-housing; 201-fixed cavity; 202-first arc surface; 203-main body; 204-top plate; 205-bottom plate; 206-sealing plate; 301-flexible inner cavity; 302-first rotating cavity; 303-second rotating cavity; 304-second arc surface; 401-first motor; 402-second motor; 403-third motor; 500-swinging push rod; 501-fixed sleeve; 502-first push rod; 5021-first tilting section; 50 22-first horizontal section; 503-second push rod; 5031-second inclined section; 5032-second horizontal section; 504-third push rod; 505-fourth push rod; 506-hinge seat; 601-first tension spring; 602-second tension spring; 701-first smoke baffle; 702-second smoke baffle; 703-third smoke baffle; 704-fourth smoke baffle; 800-connecting piece; 801-horizontal plane; 802-vertical plane; 900-flexible sealing piece. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Embodiment 1

[0044] refer to Figures 1 to 5The range hood provided in this embodiment includes a casing 100, a fixed chamber 201, a rotating chamber assembly and a driving mechanism; the fixed chamber 201 is installed at the lower end of the casing 100 and is connected to the casing 100, the rotating chamber assembly is rotationally connected and connected to the fixed chamber 201, and the driving mechanism is transmission-connected to the rotating chamber assembly, and the driving mechanism is used to drive the rotating chamber assembly to rotate relative to the fixed chamber 201.

[0045] When the range hood is working, the driving mechanism drives the rotating chamber assembly to rotate and adjusts the angle of the rotating chamber assembly. Compared with the related art, the range hood provided by the embodiment of the present invention collects oil smoke from different directions, improves the traction of the oil smoke flow, and enhances the overall smoke collection effect of the range hood.

[0046] See also Figure 3 In this embodiment, it is more preferred that the rotating chamber assembly includes a flexible inner chamber 301; the flexible inner chamber 301 is installed in the fixed chamber 201, and at least one end of the flexible inner chamber 301 can extend out of the fixed chamber 201. Specifically, when facing the range hood, the left end of the flexible inner chamber 301 can extend out of the fixed chamber 201, or the right end of the flexible inner chamber 301 can extend out of the fixed chamber 201, or both ends of the flexible inner chamber 301 can extend out of the fixed chamber 201, and the flexible inner chamber 301 is respectively sealed and connected to the casing 100 and the smoke baffle assembly to form a smoking channel. The driving mechanism is installed in the flexible inner chamber 301 and is transmission-connected to the smoke baffle assembly. Specifically, the fixed cavity 201 includes a smoke collecting cavity, and the flexible inner cavity 301 is installed in the smoke collecting cavity. The upper end of the flexible inner cavity 301 is sealed and connected to the lower edge of the casing 100. The specific connection method is to set a flange at the lower edge of the casing 100, and the flange presses the edge material of the flexible inner cavity 301. The material of the flexible inner cavity 301 can be selected from one or more of silicone, Hevira fiber and spandex.

[0047] See also Figure 1 and Figure 3 In this embodiment, more preferably, the range hood further includes a smoke baffle assembly, which is installed on the rotating chamber assembly, and the smoke baffle assembly is provided with a smoking port, and the smoke baffle assembly includes a first smoke baffle 701 and a second smoke baffle 702; at least one of the first smoke baffle 701 and the second smoke baffle 702 is rotatably connected to the fixed chamber 201, and the driving mechanism is correspondingly transmission-connected to the first smoke baffle 701 and / or the second smoke baffle 702.

[0048] Specifically, the first smoke baffle 701 is installed in the flexible inner cavity 301 and connected to the lower end of the flexible inner cavity 301, and the second smoke baffle 702 is installed at the lower end of the flexible inner cavity 301, and the second smoke baffle 702 is arranged opposite to the first smoke baffle 701. The first smoke baffle 701 is provided with a first smoking port, and the second smoke baffle 702 is provided with a second smoking port, and both the first smoking port and the second smoking port are connected to the smoking channel. In some embodiments, the first smoke baffle 701 can rotate relative to the fixed cavity 201, the second smoke baffle 702 is fixed to the fixed cavity 201, the driving mechanism drives the first smoke baffle 701 to extend or be stored in the fixed cavity 201, and the first smoke baffle 701 rotates in the direction of extending out of the smoke collecting cavity to open the smoking channel; in other embodiments, the second smoke baffle 702 can rotate relative to the fixed cavity 201, the first smoke baffle 701 is fixed to the fixed cavity 201, the driving mechanism drives the second smoke baffle 702 to extend or be stored in the fixed cavity 201, and the second smoke baffle 702 rotates in the direction of extending out of the smoke collecting cavity to open the smoking channel. Smoking channel; as another embodiment, the first smoke baffle 701 and the second smoke baffle 702 can both rotate relative to the fixed cavity 201, the first smoke baffle 701 and the second smoke baffle 702 are connected by a rotating hinge, the driving mechanism is respectively connected to the first smoke baffle 701 and the second smoke baffle 702 for transmission, and drives the first smoke baffle 701 and the second smoke baffle 702 to extend out or be stored in the fixed cavity 201, the first smoke baffle 701 and the second smoke baffle 702 can both independently rotate in the direction of extending out of the smoke collecting cavity to open the smoking channel, collect oil smoke from different directions, and improve the smoke collection effect of the range hood.

[0049] See also Figure 1 and Figure 3 In this embodiment, preferably, the driving mechanism includes a first motor 401, a swing push rod 500 and an elastic member; the first motor 401 is installed in the flexible inner cavity 301, one end of the swing push rod 500 is fixed on the output shaft of the first motor 401, and the other end of the swing push rod 500 abuts against the first smoke baffle 701 and the second smoke baffle 702 respectively, and the elastic member is arranged in the flexible inner cavity 301, and the elastic member enables the first smoke baffle 701 and the second smoke baffle 702 to have a movement tendency to be stored in the fixed cavity 201. Specifically, when the first smoke baffle 701 and the second smoke baffle 702 are stored in the smoke collecting cavity, the first smoke baffle 701 and the second smoke baffle 702 are both in a horizontal position, and at this time, one end of the swing push rod 500 abuts against the first smoke baffle 701 and the second smoke baffle 702. By setting a swing push rod 500, the first motor 401 drives the swing push rod 500 to rotate, so that the first smoke baffle 701 or the second smoke baffle 702 abutting against the swing push rod 500 rotates. A single power source drives the first smoke baffle 701 and the second smoke baffle 702, and the rotation range of the first motor 401 can be controlled to meet the rotation angle adjustment of the first smoke baffle 701 and the second smoke baffle 702, thereby improving the smoking effect.

[0050] See also Figures 1 to 3 In this embodiment, more preferably, the swing push rod 500 includes a fixed sleeve 501, a first push rod 502 and a second push rod 503; the fixed sleeve 501 is fixedly connected to the output shaft of the first motor 401, the first push rod 502 and the second push rod 503 are connected to the fixed sleeve 501, and the end of the first push rod 502 away from the fixed sleeve 501 abuts against the first smoke baffle 701, and the end of the second push rod 503 away from the fixed sleeve 501 abuts against the second smoke baffle 702. Specifically, an axial hole is provided on the fixing sleeve 501, and the axis of the axial hole coincides with the axis of the fixing sleeve 501. The fixing sleeve 501 is sleeved on the output shaft of the first motor 401, and the fixing sleeve 501 is fixed to the first motor 401 by axial positioning through a nut or axial positioning through a locating pin. The first push rod 502 and the second push rod 503 are respectively connected to the fixing sleeve 501, and the first push rod 502 and the second push rod 503 are symmetrically arranged with respect to the vertical plane where the axis of the fixing sleeve 501 is located. The fixing sleeve 501, the first push rod 502 and the second push rod 503 are an integrated structure. The first push rod 502 and the second push rod 503 are fixedly connected to the output shaft of the first motor 401 through the axial hole on the fixing sleeve 501, and the first push rod 502, the fixing sleeve 501 and the second push rod 503 are an integrated structure, which ensures the strength of the overall structure of the swing push rod 500, improves the firmness of the connection between the swing push rod 500 and the first motor 401, and further improves the reliability of the swing push rod 500 on the first smoke baffle 701 and the second smoke baffle 702.

[0051] The first push rod 502 includes a first inclined section 5021 and a first horizontal section 5022, and the second push rod 503 includes a second inclined section 5031 and a second horizontal section 5032, that is, the overall shape of the swing push rod 500 is a herringbone, the two ends of the first inclined section 5021 are respectively connected to the fixed sleeve 501 and the first horizontal section 5022, the first horizontal section 5022 abuts against the first smoke baffle 701, the two ends of the second inclined section 5031 are respectively connected to the fixed sleeve 501 and the second horizontal section 5032, the second horizontal section 5032 abuts against the second smoke baffle 702, and the first inclined section 5021 is extended near one end of the first smoke baffle 701 The second inclined section 5031 extends in a direction away from the vertical plane where the axis of the fixed sleeve 501 is located, and the extension direction of one end of the second inclined section 5031 close to the second smoke baffle 702 is away from the vertical plane where the axis of the fixed sleeve 501 is located. By setting the herringbone swing push rod 500, the first inclined section 5021 and the first horizontal section 5022 included in the first push rod 502 of the swing push rod 500 and the second inclined section 5031 and the second horizontal section 5032 included in the second push rod 503 are all integrated structures, so that the structure of the swing push rod 500 is relatively stable, the overall strength of the swing push rod 500 is improved, and it is more reliable when driving the first smoke baffle 701 and the second smoke baffle 702 to move. The first horizontal section 5022 and the first smoke baffle 701, and the second horizontal section 5032 and the second smoke baffle 702 are not fixed, and the swing push rod 500 can only push the first smoke baffle 701 and the second smoke baffle 702 to rotate downward, but cannot pull them back to the horizontal position.

[0052] See also Figure 1 and Figure 3 In this embodiment, the elastic member includes a first tension spring 601 and a second tension spring 602; one end of the first tension spring 601 is connected to the first smoke baffle 701, and the other end is connected to the casing 100, and one end of the second tension spring 602 is connected to the second smoke baffle 702, and the other end is connected to the casing 100. Specifically, the first tension spring 601 exerts a pulling force on the first smoke baffle 701, so that the first smoke baffle 701 fits against the lower edge of the smoke collecting chamber, and the second tension spring 602 exerts a pulling force on the second smoke baffle 702, so that the second smoke baffle 702 fits against the lower edge of the smoke collecting chamber. The first tension spring 601 and the second tension spring 602 are symmetrically arranged about the vertical plane where the axis of the first motor 401 is located. The symmetrically arranged first tension spring 601 and the second tension spring 602 exert a more balanced pulling force on the first smoke baffle 701 and the second smoke baffle 702 on both sides, so that the movement of the first smoke baffle 701 and the second smoke baffle 702 during the process of being stored in the smoke collecting chamber is more reliable. The connection method of the first tension spring 601 and the second tension spring 602 at both ends can be selected to be bolted or hooked.

[0053] Reference Figure 1In a further preferred implementation of this embodiment, the range hood further comprises a connecting member 800; the connecting member 800 is installed in the flexible inner cavity 301, the connecting member 800 is horizontally fixed to the lower edge of the housing 100 by bolts, the first motor 401 is installed on the connecting member 800, and one end of the elastic member is connected to the connecting member 800. Figure 1 In this embodiment, the connecting member includes a horizontal surface 801 and a vertical surface 802. The horizontal surface 801 and the vertical surface 802 are an integrated structure. The first motor 401 is installed on the vertical surface 802. The horizontal surface 801 is connected to one end of the elastic member. Specifically, the vertical surface 802 is fixedly connected to the housing 100 by bolts. The horizontal surface 801 is horizontally arranged near the lower edge of the housing 100. One end of the first motor 401 away from the output shaft is installed on the vertical surface 802, and the first motor 401 is located at the midpoint of the vertical surface 802. One end of the first tensioning spring 601 away from the first smoke baffle 701 and the other end of the second tensioning spring 602 away from the second smoke baffle 702 are both installed on the horizontal plane 801, and the first tensioning spring 601 and the second tensioning spring 602 are symmetrically arranged with respect to the vertical plane where the axis of the horizontal plane 801 is located. By setting the connecting piece 800, the first motor 401, the first tensioning spring 601 and the second tensioning spring 602 can be fixed respectively, saving the internal space of the smoke collecting chamber, making the structure more optimized, and saving costs at the same time.

[0054] In the initial state, see Figure 3 The first tension spring 601 and the second tension spring 602 exert tension on the first smoke baffle 701 and the second smoke baffle 702 respectively, so that the first smoke baffle 701 and the second smoke baffle 702 are in contact with the lower edge of the smoke collecting chamber. The first smoke baffle 701 and the second smoke baffle 702 are both in a horizontal position, and the flexible inner cavity 301 is hidden in the smoke collecting chamber. When the first motor 401 rotates counterclockwise, refer to Figure 5 , the first motor 401 drives the swing push rod 500 to rotate, the second push rod 503 is separated from the second smoke baffle 702, and the first push rod 502 generates a thrust on the first smoke baffle 701, which overcomes the elastic resistance of the first tensioning spring 601, pushes the first smoke baffle 701 to rotate downward, and drives the flexible inner cavity 301 to deform, so as to adjust the angle of the first smoking port; when the first motor 401 is reversed to the initial position, the first smoke baffle 701 is pulled back to the horizontal position by the first tensioning spring 601, so that the first smoke baffle 701 is firmly attached to the first horizontal section 5022, and the flexible inner cavity 301 is received in the smoke collecting cavity, so that the flexible inner cavity 301 is completely hidden in the smoke collecting cavity, and at this time, the first smoke baffle 701 and the second smoke baffle 702 are restored to the horizontal initial state; the angle adjustment principle of the second smoking port on the other side is the same as above and will not be repeated.

[0055] The present invention can realize the change of the smoke inlet angle, see Fig.11When a single stove is working, the smoke outlet on the other side rotates downward to enhance the traction of oil smoke, prevent oil smoke from escaping, and improve the smoking effect. Due to the influence of kitchen layout and the opening and closing of doors and windows, the air flow state in the kitchen changes, and the oil smoke diffusion trend may shift. The range hood of the present invention can adaptively adjust the angles of the smoke outlets on both sides to improve the capture effect of oil smoke.

[0056] Embodiment 2

[0057] This embodiment provides a range hood with another structural form, which is different from the range hood provided in the first embodiment in that:

[0058] See also Figures 6 to 8 In this embodiment, preferably, the rotating chamber assembly includes a first rotating chamber 302 and a second rotating chamber 303; the first rotating chamber 302 and the second rotating chamber 303 are respectively rotatably connected to the two ends of the fixed chamber 201, and the two ends of the side wall of the fixed chamber 201 are provided with a first arc surface 202, and the first rotating chamber 302 and the second rotating chamber 303 are respectively provided with a second arc surface 304 that slidably cooperates with the first arc surface 202. Specifically, the fixed chamber 201 is installed at the lower edge of the housing 100 and communicates with the housing 100, the first rotating chamber 302 and the second rotating chamber 303 are respectively rotatably connected to the two ends of the fixed chamber 201, and the first rotating chamber 302 and the second rotating chamber 303 are in the same horizontal plane 801, the first rotating chamber 302 and the second rotating chamber 303 rotate around the first arc surface 202 at the two ends of the fixed chamber 201, and the rotation axes of the first rotating chamber 302 and the second rotating chamber 303 are parallel.

[0059] The above-mentioned first arc surface 202 and second arc surface 304 can be set in two ways. The first is that the first arc surfaces 202 at both ends are respectively convex toward the direction close to the first rotating cavity 302 and the second rotating cavity 303, and the second arc surface 304 is recessed toward the side away from the fixed cavity 201, and the first arc surface 202 and the second arc surface 304 are slidably matched. The second situation is that the first arc surfaces 202 at both ends are respectively recessed toward the direction close to the first rotating cavity 302 and the second rotating cavity 303, and the second arc surface 304 is protruded toward the side away from the fixed cavity 201, and the first arc surface 202 and the second arc surface 304 are slidably matched. In these two cases, the center of the first arc surface 202 and the second arc surface 304 coincide. By setting the structure of the first arc surface 202 and the second arc surface 304, when the driving mechanism drives the first rotating chamber 302 and the second rotating chamber 303 to rotate, the edges of the first rotating chamber 302 and the second rotating chamber 303 are always in contact with the two ends of the fixed chamber 201, preventing the first rotating chamber 302 and the second rotating chamber 303 from separating from or interfering with each other, thereby improving the reliability and stability of the range hood operation and further improving the smoke collection effect of the smoking ports on both sides.

[0060] See also Figure 6 and Figure 7 In this embodiment, the smoke baffle assembly includes a third smoke baffle 703 and a fourth smoke baffle 704, and the third smoke baffle 703 and the fourth smoke baffle 704 are respectively provided with a smoking port; the third smoke baffle 703 is installed in the first rotating chamber 302, and the fourth smoke baffle 704 is installed in the second rotating chamber 303, and the driving mechanism is in contact with the third smoke baffle 703 and the fourth smoke baffle 704. Specifically, the third smoke baffle 703 is connected to the lower edge of the first rotating chamber 302, and the fourth smoke baffle 704 is connected to the lower edge of the second rotating chamber 303. The driving mechanism is respectively connected to the third smoke baffle 703 and the fourth smoke baffle 704 in transmission connection, and drives the third smoke baffle 703 and the fourth smoke baffle 704 to rotate relative to the fixed chamber 201.

[0061] See also Figure 8 In this embodiment, preferably, the fixed cavity 201 includes a main body 203, a top plate 204 and a bottom plate 205. The main body 203 is installed on the lower edge of the housing 100, and the top plate 204 and the bottom plate 205 are arranged on the main body 203. Sealing plates 206 are arranged at both ends of the top plate 204 and the bottom plate 205. The sealing plates 206 are arc-shaped and coaxial with the first arc surface 202 at the corresponding end, and there is a gap between the two sealing plates 206 at the same end. Specifically, the top plate 204 is arranged at the upper end of the main body 203 and is vertically connected to the main body 203. The bottom plate 205 is arranged at the lower end of the main body 203 and is vertically connected to the main body 203. The connection between the sealing plate 206 and the top plate 204 and the bottom plate 205 is smoothly transitioned. There is a gap between the two sealing plates 206 at one end of the main body 203. The first rotating chamber 302 and the second rotating chamber 303 are connected to the fixed chamber 201 through the gap, ensuring that the oil smoke can be inhaled from the first rotating chamber 302 and the second rotating chamber 303, enter the fixed chamber 201 through the gap, and be discharged through the smoking channel.

[0062] Continue reading Figure 6 , Figure 7 and Fig.10In this embodiment, more preferably, the driving mechanism includes a second motor 402, a third motor 403, a third push rod 504 and a fourth push rod 505; the second motor 402 and the third motor 403 are respectively installed at both ends of the fixed cavity 201, one end of the third push rod 504 is fixedly connected to the output shaft of the second motor 402, and the other end is hinged to the third smoke baffle 703, one end of the fourth push rod 505 is fixed to the output shaft of the third motor 403, and the other end is hinged to the fourth smoke baffle 704. Specifically, the second motor 402 and the third motor 403 are installed in the fixed cavity 201, and the axes of the second motor 402 and the third motor 403 coincide with the centers of the corresponding first arc-shaped surfaces. The driving mechanism also includes a hinge seat 506. There are two hinge seats 506. The two hinge seats 506 are respectively installed on the third smoke baffle 703 and the fourth smoke baffle 704 by bolts. One end of the third push rod 504 is fixedly connected to the output shaft of the second motor 402, and the other end is hinged to the hinge seat 506 through a gap. The third push rod 504 and the second motor 402 can be fixedly positioned by nut axial positioning or pin axial positioning. One end of the fourth push rod 505 is fixedly connected to the output shaft of the third motor 403, and the other end is hinged to the hinge seat 506 through a gap. The fourth push rod 505 and the third motor 403 can be fixedly positioned by nut axial positioning or pin axial positioning. By setting the second motor 402 and the third motor 403, the rotating cavities on both sides are driven respectively, so that the smoke inlets on both sides can be adjusted respectively. When a single stove is working, the smoke outlet on the other side rotates downward to enhance the traction of oil smoke, prevent oil smoke from escaping, and improve the smoking effect.

[0063] See also Figure 8 and Fig. 9 In this embodiment, the edges of the first rotating chamber 302 and the second rotating chamber 303 are both provided with flexible seals 900, and the flexible seals 900 abut against the sealing plate 206. Specifically, the flexible seals 900 can be made of sealing rubber, which seals the connection between the first rotating chamber 302, the second rotating chamber 303 and the fixed chamber 201. The edges of the first rotating chamber 302 and the second rotating chamber 303 are wrapped with sealing rubber. After assembly, the sealing rubber is firmly attached to the outer surfaces of both sides of the fixed chamber 201, ensuring good sealing between the fixed chamber 201, the first rotating chamber 302 and the second rotating chamber 303, and further improving the smoke extraction effect of the range hood.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A range hood, characterized in that: include: A housing (100), a fixed cavity (201), a rotating cavity assembly and a driving mechanism; The fixed chamber (201) is installed at the lower end of the housing (100) and is in communication with the housing (100); the rotating chamber assembly is rotationally connected to and in communication with the fixed chamber (201); the driving mechanism is transmission-connected to the rotating chamber assembly, and the driving mechanism is used to drive the rotating chamber assembly to rotate relative to the fixed chamber (201); The range hood further comprises a smoke baffle assembly, which is mounted on the rotating chamber assembly and is provided with a smoke inlet; The rotating chamber assembly comprises a flexible inner chamber (301); The flexible inner cavity (301) is installed in the fixed cavity (201), and at least one end of the flexible inner cavity (301) can extend out of the fixed cavity (201); the flexible inner cavity (301) is respectively sealed and connected to the housing (100) and the smoke baffle assembly to form a smoking passage; the driving mechanism is installed in the flexible inner cavity (301) and is transmission-connected to the smoke baffle assembly; the fixed cavity (201) includes a smoke collecting cavity, the flexible inner cavity (301) is installed in the smoke collecting cavity, and the upper end of the flexible inner cavity (301) is sealed and connected to the lower edge of the housing (100); Or the rotating chamber assembly includes a first rotating chamber (302) and a second rotating chamber (303); The first rotating chamber (302) and the second rotating chamber (303) are respectively rotatably connected to the two ends of the fixed chamber (201); both ends of the side wall of the fixed chamber (201) are provided with a first arc surface (202); the first rotating chamber (302) and the second rotating chamber (303) are respectively provided with a second arc surface (304) that slidably cooperates with the first arc surface (202).

2. The range hood according to claim 1, characterized in that: The smoke shield assembly comprises a first smoke shield (701) and a second smoke shield (702); The first smoke baffle (701) and the second smoke baffle (702) are both sealedly connected to the lower edge of the flexible inner cavity (301), and at least one of them is rotationally connected to the fixed cavity (201), and the driving mechanism is correspondingly transmission-connected to the first smoke baffle (701) and / or the second smoke baffle (702).

3. The range hood according to claim 2, characterized in that: The driving mechanism comprises a first motor (401), a swing push rod (500) and an elastic member; The first motor (401) is installed in the flexible inner cavity (301), one end of the swing push rod (500) is fixed on the output shaft of the first motor (401), and the other end of the swing push rod (500) is respectively abutted against the first smoke shield (701) and the second smoke shield (702), and the elastic member is arranged in the flexible inner cavity (301), and the elastic member enables the first smoke shield (701) and the second smoke shield (702) to have a movement tendency to be accommodated in the fixed cavity (201).

4. The range hood according to claim 3, characterized in that: The swing push rod (500) comprises a fixed sleeve (501), a first push rod (502) and a second push rod (503); The fixing sleeve (501) is fixedly connected to the output shaft of the first motor (401), the first push rod (502) and the second push rod (503) are connected to the fixing sleeve (501), one end of the first push rod (502) away from the fixing sleeve (501) abuts against the first smoke shield (701), and one end of the second push rod (503) away from the fixing sleeve (501) abuts against the second smoke shield (702).

5. The range hood according to claim 3, characterized in that: The elastic member comprises a first tension spring (601) and a second tension spring (602); One end of the first tension spring (601) is connected to the first smoke baffle (701), and the other end is connected to the housing (100); one end of the second tension spring (602) is connected to the second smoke baffle (702), and the other end is connected to the housing (100).

6. The range hood according to claim 1, characterized in that: The fixed cavity (201) comprises a main body (203), a top plate (204) and a bottom plate (205); the main body (203) is mounted on the housing (100); the top plate (204) and the bottom plate (205) are arranged on the main body (203); sealing plates (206) are arranged at both ends of the top plate (204) and the bottom plate (205); the sealing plates (206) are arc-shaped and coaxial with the first arc surface (202) at the corresponding end; a gap is provided between the two sealing plates (206) at the same end; the first rotating cavity (302) and the second rotating cavity (303) are connected to the fixed cavity (201) through the gap.

7. The range hood according to claim 6, characterized in that: Flexible sealing members (900) are provided at the edges of the first rotating chamber (302) and the second rotating chamber (303), and the flexible sealing members (900) are in contact with the sealing plate (206).

8. The range hood according to claim 1, characterized in that: The smoke baffle assembly comprises a third smoke baffle (703) and a fourth smoke baffle (704); The third smoke baffle (703) is installed in the first rotating chamber (302), the fourth smoke baffle (704) is installed in the second rotating chamber (303), and the driving mechanism is in transmission connection with the third smoke baffle (703) and the fourth smoke baffle (704).

9. The range hood according to claim 8, characterized in that: The driving mechanism comprises a second motor (402), a third motor (403), a third push rod (504) and a fourth push rod (505); The second motor (402) and the third motor (403) are respectively installed at the two ends of the fixed cavity (201); one end of the third push rod (504) is fixedly connected to the output shaft of the second motor (402), and the other end is hinged to the third smoke baffle (703); one end of the fourth push rod (505) is fixedly connected to the output shaft of the third motor (403), and the other end is hinged to the fourth smoke baffle (704).

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