Range hood with impeller anti-loosening structure

Abstract

The utility model discloses a range hood with an impeller anti-loosening structure, which belongs to the technical field of range hoods and comprises a housing, fixing holes are arranged at four corners above the housing, a shielding net rack is connected below the housing, mounting grooves are arranged on two sides above the housing, a sealing plate is mounted on the housing, and the impeller anti-loosening structure is mounted on the sealing plate. A fixing plate is installed in the housing, and a fixing ring is connected to the fixing plate. According to the range hood with the impeller anti-loosening structure, after a fixing plate is mounted in a housing, a pressing block is pushed into a mounting groove to make contact with the fixing plate, at the moment, a limiting rod can be inserted into a limiting hole, then a fastening screw is rotated by screwing a spline cap to make the fastening screw enter a threaded hole, and therefore a sealing plate is fixed to the housing; and along with screwing of the fastening screw rod, the sealing plate and the pressing block can tightly press the fixing plate, and the limiting rod can conduct limiting, so that the shaking amplitude is reduced, and the rotating stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of range hoods, in particular to a range hood with an impeller anti-loosening structure. Background Art

[0002] The purpose of a range hood is to exhaust kitchen fumes and dust outdoors. It can quickly extract waste from stove combustion and fumes harmful to the human body generated during cooking and discharge them outdoors, reducing pollution, purifying the air, and providing safety protection against poison and explosion. Its working principle has evolved from the early mechanical purification method to electrostatic fume purification technology. Currently, when the fan blades in the range hood rotate, the fan blades and the motor will shake, causing the connection to loosen, affecting the subsequent normal working rotation. Utility Model Content

[0003] In order to overcome the above defects, the utility model provides a range hood with an impeller anti-loosening structure, which solves the problem that when the fan blades in the range hood rotate, the fan blades and the motor will shake, thereby causing the connection to become loose and affecting the subsequent normal working rotation.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a range hood with an impeller anti-loosening structure, comprising a cover shell, fixing holes are formed at the four corners of the upper portion of the cover shell, a shielding grid is connected to the lower portion of the cover shell, mounting grooves are formed on both sides of the upper portion of the cover shell, a sealing plate is mounted on the cover shell, a fixing plate is mounted inside the cover shell, a fixing ring is connected to the fixing plate, and connecting plates are connected to both sides of the fixing plate;

[0005] A fixing frame is connected below the fixing plate, a motor is installed on the fixing frame, a fan blade is installed on the motor output shaft, a plurality of ventilation holes are opened on the closing plate, a plurality of limit rods are connected below the closing plate, pressure blocks are connected on both sides of the closing plate, a fastening screw is threadedly connected to one side of the pressure block, and a spline cap is connected to one end of the fastening screw.

[0006] As a further solution of the present invention: the pressing block is inserted into the installation groove and fits against the wall of the installation groove. An elastic sheet is connected to the installation groove. The elastic sheet is curved and made of metal.

[0007] As a further solution of the present invention: a plurality of limiting holes are provided on the fixing ring, and a total of four limiting rods are arranged in a centrally symmetrical manner, and the limiting rods are inserted into the limiting holes.

[0008] As a further solution of the present invention: the connecting plate is inserted into the installation groove, a protrusion is provided on one side of the connecting plate, the protrusion is hemispherical in design, the connecting plate is clamped between the elastic sheet and the wall of the installation groove, and the elastic sheet is in contact with the connecting plate.

[0009] As a further solution of the present invention: the vent is designed to be arc-shaped, and a rubber ring is connected to the sealing plate, and the rubber ring is fitted on the inner wall of the cover.

[0010] As a further solution of the present invention: a threaded hole is opened on the upper side of the cover shell, and the fastening screw is threadedly connected to the threaded hole.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The range hood with an impeller anti-loosening structure is provided with a pressing block, a limiting rod, a limiting hole, an installation groove, a fastening screw, a spline cap and a threaded hole. After the fixing plate is installed inside the cover, the pressing block is pushed into the installation groove to make the pressing block contact with the fixing plate. At this time, the limiting rod will be inserted into the limiting hole. Thereafter, the fastening screw is rotated by twisting the spline cap to make the fastening screw enter the threaded hole, thereby fixing the closing plate on the cover. As the fastening screw is twisted, the closing plate and the pressing block will press the fixing plate tightly, and the limiting rod can limit the position, thereby reducing the shaking amplitude and improving the rotation stability.

[0013] 2. The range hood with an impeller anti-loosening structure is equipped with a connecting plate, a protrusion, an elastic sheet, a motor and fan blades. During assembly, the staff inserts the connecting plate into the installation groove. At this time, the protrusion will push the elastic sheet, causing the elastic sheet to deform. After the connecting plate is completely entered into the installation groove, the elastic sheet restores its shape and fits into contact with the connecting plate, thereby fixing the connecting plate in the installation groove to complete the installation of the fixing plate. The operation is simple and convenient for the staff to disassemble and assemble. The fan blades are rotated by the motor to blow air, thereby completing the extraction of oil smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the cover of the utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixed plate of the utility model;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the cover of the utility model;

[0018] Figure 5 for Figure 2 Schematic diagram of the enlarged structure in part A;

[0019] In the figure: 1. Cover; 2. Fixing hole; 3. Shielding grid; 4. Mounting slot; 5. Closing plate; 6. Fixing plate; 7. Fixing ring; 8. Connecting plate; 9. Fixing frame; 10. Motor; 11. Fan blade; 12. Ventilation port; 13. Rubber ring; 14. Limit rod; 15. Pressure block; 16. Fastening screw; 17. Spline cap; 18. Elastic sheet; 19. Limit hole; 20. Bump; 21. Threaded hole. DETAILED DESCRIPTION

[0020] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0021] like Figure 1-5 As shown, the utility model provides a technical solution: a range hood with an impeller anti-loosening structure, comprising a cover shell 1, fixing holes 2 are provided at the four corners above the cover shell 1, a shielding grid 3 is connected to the bottom of the cover shell 1, mounting grooves 4 are provided on both sides of the top of the cover shell 1, a closing plate 5 is installed on the cover shell 1, a fixing plate 6 is installed inside the cover shell 1, a fixing ring 7 is connected to the fixing plate 6, a plurality of limiting holes 19 are provided on the fixing ring 7, a total of four limiting rods 14 are arranged in a centrally symmetrical manner, and the limiting rods 14 are inserted into the limiting holes 19. By inserting the limiting rods 14 into the limiting holes 19, after the closing plate 5 is fixed, the limiting rods 14 can limit the fixing ring 7, reduce the shaking amplitude of the fixing plate 6, and enable the motor 10 and the fan blades 11 to work and rotate smoothly.

[0022] The fixing plate 6 is connected to connecting plates 8 on both sides. The connecting plates 8 are inserted into the mounting groove 4. A protrusion 20 is provided on one side of the connecting plate 8. The protrusion 20 is hemispherical in design. The connecting plate 8 is clamped between the elastic sheet 18 and the wall of the mounting groove 4. The elastic sheet 18 contacts the connecting plate 8. The hemispherical protrusion 20 can facilitate the connecting plate 8 to push the elastic sheet 18, so that the connecting plate 8 can be clamped between the wall of the mounting groove 4 and the elastic sheet 18, thereby facilitating the staff to install and disassemble the fixing plate 6.

[0023] A fixing frame 9 is connected to the bottom of the fixing plate 6, and a motor 10 is installed on the fixing frame 9. A fan blade 11 is installed on the output shaft of the motor 10. A plurality of ventilation holes 12 are opened on the closing plate 5. The ventilation holes 12 are arc-shaped. A rubber ring 13 is connected to the closing plate 5. The rubber ring 13 fits on the inner wall of the cover shell 1. When the closing plate 5 is pushed into the interior of the cover shell 1, the rubber ring 13 will be squeezed and deformed, thereby fitting and contacting with the inner wall of the cover shell 1, increasing friction and improving the stability of the installation.

[0024] There are multiple limit rods 14 connected to the bottom of the sealing plate 5, and pressure blocks 15 are connected on both sides of the sealing plate 5. The pressure blocks 15 are inserted into the installation groove 4 and fit with the groove wall of the installation groove 4. An elastic sheet 18 is connected to the installation groove 4. The elastic sheet 18 is curved and made of metal. The metal elastic sheet 18 can clamp the connecting plate 8 after the elastic sheet 18 restores its shape, thereby fixing the fixing plate 6. The operation is simple and it is convenient for the staff to disassemble and maintain.

[0025] A fastening screw 16 is threadedly connected to one side of the pressure block 15, and a spline cap 17 is connected to one end of the fastening screw 16. A threaded hole 21 is provided on the top of the cover 1, and the fastening screw 16 is threadedly connected to the threaded hole 21. The fastening screw 16 is rotated through the spline cap 17 to thread the fastening screw 16 to the threaded hole 21, thereby fixing the sealing plate 5 on the cover 1, and by continuously twisting the fastening screw 16, the sealing plate 5 can be pressed and fixed to the fixing plate 6 to prevent the fixing plate 6 from accidentally moving.

[0026] The working principle of this utility model is:

[0027] The staff inserts the connecting plate 8 into the mounting groove 4, prompting the protrusion 20 to push the elastic sheet 18, causing the elastic sheet 18 to deform. After the connecting plate 8 is completely entered into the mounting groove 4, the elastic sheet 18 restores its shape, clamping the connecting plate 8 between the groove wall of the mounting groove 4 and the elastic sheet 18, thereby fixing the fixing plate 6, and then pushes the pressure block 15 into the mounting groove 4, prompting the pressure block 15 to contact the fixing plate 6, and at the same time the limit rod 14 will be inserted into the limiting hole 19, and then the fastening screw 16 is rotated by twisting the spline cap 17, prompting the fastening screw 16 to enter the threaded hole 21, thereby fixing the closing plate 5 on the cover 1, and by continuously twisting the fastening screw 16, the closing plate 5 and the pressure block 15 are pressed and fixed to the fixing plate 6, thereby reducing the shaking amplitude and improving the stability of the working rotation, and then the fan blades 11 are rotated by starting the motor 10, so that the fan blades 11 blow air, thereby completing the extraction of oil smoke.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0029] The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A range hood with an impeller anti-loosening structure, comprising a housing (1), characterized in that: The cover shell (1) is provided with fixing holes (2) at the four corners above, a shielding grid (3) is connected to the bottom of the cover shell (1), mounting grooves (4) are provided on both sides above the cover shell (1), a sealing plate (5) is installed on the cover shell (1), a fixing plate (6) is installed inside the cover shell (1), a fixing ring (7) is connected to the fixing plate (6), and connecting plates (8) are connected to both sides of the fixing plate (6); A fixing frame (9) is connected below the fixing plate (6), a motor (10) is installed on the fixing frame (9), a fan blade (11) is installed on the output shaft of the motor (10), a plurality of ventilation openings (12) are provided on the closing plate (5), a plurality of limit rods (14) are connected below the closing plate (5), pressing blocks (15) are connected on both sides of the closing plate (5), a fastening screw (16) is threadedly connected to one side of the pressing block (15), and a spline cap (17) is connected to one end of the fastening screw (16).

2. The range hood with an impeller anti-loosening structure according to claim 1, characterized in that: The pressing block (15) is inserted into the installation groove (4) and fits against the groove wall of the installation groove (4). An elastic piece (18) is connected to the installation groove (4). The elastic piece (18) is curved and made of metal.

3. The range hood with an impeller anti-loosening structure according to claim 1, characterized in that: The fixing ring (7) is provided with a plurality of limiting holes (19), and a total of four limiting rods (14) are arranged in a centrally symmetrical manner, and the limiting rods (14) are inserted into the limiting holes (19).

4. The range hood with an impeller anti-loosening structure according to claim 2, characterized in that: The connecting plate (8) is inserted into the mounting groove (4), a protrusion (20) is provided on one side of the connecting plate (8), and the protrusion (20) is designed to be hemispherical. The connecting plate (8) is clamped between the elastic sheet (18) and the groove wall of the mounting groove (4), and the elastic sheet (18) is in contact with the connecting plate (8).

5. The range hood with an impeller anti-loosening structure according to claim 1, characterized in that: The vent (12) is of arc-shaped design, and a rubber ring (13) is connected to the sealing plate (5), and the rubber ring (13) is fitted on the inner wall of the housing (1).

6. The range hood with an impeller anti-loosening structure according to claim 1, characterized in that: A threaded hole (21) is provided on the upper side of the cover shell (1), and the fastening screw (16) is threadedly connected to the threaded hole (21).

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