Automatic opening and closing range hood and air inlet area adjustment method using the same

Abstract

The present invention discloses an automatically opening and closing range hood, which includes a range hood body, an upper panel, a lower panel, a cover, a rolling curtain assembly and a smoke control assembly. The upper panel and the lower panel are respectively arranged at the upper and lower ends of the range hood body, and the cover, the rolling curtain assembly and the smoke control assembly are all installed inside the upper panel. The rolling curtain assembly is sleeved in the cover, and automatically adjusts the air inlet area of ​​the range hood according to the size of the oil smoke detected by the smoke control assembly. The present invention also discloses a method for adjusting the air inlet area and the method using the same. The present invention arranges a rolling curtain assembly and a smoke control assembly at the air inlet of the range hood, and detects the size of the oil smoke through the smoke control assembly and controls the opening and closing of the rolling curtain assembly, thereby automatically adjusting the air inlet area of ​​the range hood, so that the range hood maintains the best smoking state; at the same time, by arranging the cover, it is convenient to assemble the rolling curtain assembly with the range hood and prevent the oil smoke from invading the rolling curtain assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of range hoods, and in particular relates to an automatically opening and closing range hood and an air inlet area adjustment method using the range hood. Background Art

[0002] At present, the automatic opening and closing structures of the range hoods with automatic opening and closing functions on the market are mainly based on panel flipping or telescopic. When the panel of the flip-type automatic opening and closing range hood is open, the panel will face the user directly, which may easily block the line of sight, occupy the kitchen, and even cause safety hazards such as hitting the user's head or other parts of the body. In order to drive the glass panel weighing several kilograms, the panel opening and closing motor of the flip mechanism will use a large torque motor. The large panel opening and closing force may cause the risk of pinching the user; and for the telescopic type automatic opening and closing range hood, since the panel opening and closing process generally adopts a linear motion method, the motion trajectory can only exist at the air inlet position. When the panel is open, it is easy to block the air inlet, resulting in a reduction in the air inlet area, thereby affecting the smoking effect.

[0003] In order to reduce the difficulty of the manufacturing process and avoid the risk of collision during the opening and closing process of the panel, whether a flip or telescopic structure is adopted, a large number of side seams or gaps will be designed on the four sides of the panel when the panel is in the closed state. The existence of such side seams or gaps will greatly damage the sealing structure of the panel in the closed state. Poor panel sealing may lead to the backflow or leakage of oil smoke when the negative pressure of the public flue increases, and the mutual odor between users, thus losing the core value of the automatic opening and closing function of the panel. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an automatically opening and closing range hood, by arranging a roller shutter assembly and a smoke control assembly at the air inlet of the range hood, and detecting the size of the oil smoke and controlling the opening and closing of the roller shutter assembly through the smoke control assembly, thereby automatically adjusting the air inlet area of ​​the range hood to keep the range hood in the best smoking state.

[0005] Another object of the present invention is to provide a method for adjusting the air inlet area.

[0006] The technical solution adopted by the present invention is:

[0007] It includes a range hood body, an upper panel, a lower panel, a cover shell, a rolling curtain assembly and a smoke control assembly. The upper panel and the lower panel are respectively arranged at the upper and lower ends of the range hood body, the cover shell, the rolling curtain assembly and the smoke control assembly are all installed inside the upper panel, the rolling curtain assembly is sleeved in the cover shell, and the air inlet area of ​​the range hood is automatically adjusted according to the size of the oil smoke detected by the smoke control assembly.

[0008] Preferably, the rolling shutter assembly includes a roller, a connecting piece, a rolling shutter panel, a driving unit, and a guide rail. The roller is installed in the cover shell, and the connecting piece is detachably installed on the roller. One end of the rolling shutter panel is fixed on the connecting piece. The driving unit is installed in the roller, and guide rails for the rolling shutter panel to move up and down are respectively installed on both sides of the range hood body.

[0009] Preferably, the connecting piece is a snap-on sheath.

[0010] Preferably, the rolling shutter panel is formed by a plurality of shutter blades that are buckled and connected in series.

[0011] Preferably, the front and rear ends of the curtain pieces are respectively provided with hooks and hanging rings, and a plurality of the curtain pieces are connected in series end to end through the hooks and hanging rings to form the rolling curtain panel.

[0012] Preferably, the drive unit is a tubular motor.

[0013] Preferably, a sealing unit is installed on the upper end of the lower panel, and the sealing unit is a sealing strip.

[0014] Preferably, it also includes an oil net arranged in the range hood body, the smoke control component is installed on the oil net, the smoke control component includes a smoke sensing unit and a control unit, the control unit is electrically connected to the smoke sensing unit and the driving unit, and controls the forward and reverse rotation of the driving unit according to the size of the oil smoke detected by the smoke sensing unit.

[0015] Preferably, the smoke sensing unit is a smoke sensor, and the control unit is a controller.

[0016] The method for adjusting the air inlet area of ​​the automatically opening and closing range hood comprises the following steps:

[0017] S1. Turn on the range hood, and the smoke control component detects the current smoke value;

[0018] S2, the smoke control component determines the size of the oil smoke;

[0019] S3: When the oil smoke is greater than the set value, the roller shutter assembly is controlled to move upward, the air inlet area is increased, and the smoke collection capacity is enhanced; when the oil smoke is less than the set value, the roller shutter assembly is controlled to move downward, the air pressure at the air inlet is increased, and the adsorption capacity is enhanced;

[0020] S4. Smoke through the air inlet and discharge the fumes into the public flue.

[0021] Compared with the prior art, the present invention arranges a roller shutter assembly and a smoke control assembly at the air inlet of the range hood. The smoke control assembly detects the size of the oil smoke and controls the opening and closing of the roller shutter assembly, thereby automatically adjusting the air inlet area of ​​the range hood to keep the range hood in the best smoking state. At the same time, by providing a cover, the assembly of the roller shutter assembly and the range hood is facilitated and the invasion of oil smoke into the roller shutter assembly is prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional diagram of an automatically opening and closing range hood provided in Embodiment 1 of the present invention;

[0023] Figure 2 is an exploded view of the automatically opening and closing range hood provided in Embodiment 1 of the present invention;

[0024] Figure 3 is a structural diagram of a rolling curtain assembly of an automatically opening and closing range hood provided in Example 1 of the present invention;

[0025] Figure 4 This is a diagram showing the closed state of the roller shutter panel of the automatically opening and closing range hood provided by Embodiment 1 of the present invention;

[0026] Figure 5 This is a diagram showing the opening state of the rolling shutter panel of the automatically opening and closing range hood provided by Embodiment 1 of the present invention;

[0027] Figure 6 It is a flow chart of the method for adjusting the air inlet area of ​​an automatically opening and closing range hood provided in Example 2 of the present invention.

[0028] Description of Reference Numerals

[0029] 1-range hood body, 2-upper panel, 3-lower panel, 31-sealing unit, 4-cover, 5-roller shutter assembly, 51-roller shaft, 52-connecting piece, 53-roller shutter panel, 531-curtain blade, 532-hook, 533-hanging ring, 54-driving unit, 55-guide rail, 56-curtain blade, 6-smoke control assembly, 61-smoke sensing unit, 62-control unit, 7-oil net. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] Example 1

[0032] Embodiment 1 of the present invention provides a range hood that opens and closes automatically, such as Figure 1As shown, it includes a range hood body 1, an upper panel 2, a lower panel 3, a cover shell 4, a rolling curtain assembly 5 and a smoke control assembly 6. The upper panel 2 and the lower panel 3 are respectively arranged at the upper and lower ends of the range hood body 1, and the cover shell 4, the rolling curtain assembly 5 and the smoke control assembly 6 are all installed inside the upper panel 2. The rolling curtain assembly 5 is sleeved in the cover shell 4 and automatically adjusts the air inlet area of ​​the range hood according to the size of the oil smoke detected by the smoke control assembly 6.

[0033] In this way, by adopting the above structure, the present invention sets a roller shutter assembly 5 and a smoke control assembly 6 at the air inlet of the range hood, and detects the size of the oil smoke through the smoke control assembly 6 and controls the opening and closing of the roller shutter assembly 5, thereby automatically adjusting the air inlet area of ​​the range hood to keep the range hood in the best smoking state; at the same time, by setting the cover shell 4, it is convenient to assemble the roller shutter assembly 5 with the range hood and prevent the oil smoke from invading the roller shutter assembly 5.

[0034] like Figure 2-3 As shown, the rolling shutter assembly 5 comprises a reel 51, a connector 52, a rolling shutter panel 53, a driving unit 54, and a guide rail 55. The reel 51 is installed in the housing 4. The connector 52 is detachably installed on the reel 51. One end of the rolling shutter panel 53 is fixed on the connector 52. The driving unit 54 is installed in the reel 51. Guide rails 55 for the rolling shutter panel 53 to move up and down are respectively installed on both sides of the range hood body 1. The driving unit 54 is connected to the reel 51 and rotates together, thereby driving the rolling shutter panel 53 connected to the reel to make a circular motion along the guide rail 55 and around the reel 51. The circular motion can be extended and rolled back to achieve the adjustment of the size of the air inlet area.

[0035] The connecting member 52 is a snap-on sheath used to connect the reel 51 and the rolling shutter panel 53 , so that the rolling shutter panel 53 moves in a circular motion around the reel 51 under the drive of the driving unit 54 in the reel 51 .

[0036] The rolling shutter panel 53 is formed by a plurality of curtain pieces 531 connected in series and buckled together, thereby forming a bendable rolling shutter panel, which is convenient for freely adjusting the size of the air inlet in the later stage. One of the series connection methods is: the front and rear ends of the curtain pieces 531 are respectively provided with hooks and hanging rings, and a plurality of the curtain pieces 531 are connected in series end to end through the hooks and hanging rings to form the rolling shutter panel 53. The circular motion method is adopted to effectively break through the drawbacks brought by the flipping or telescopic automatic opening and closing structure scheme of the existing range hood panel, and cleverly simplify the common single block of relatively bulky large-area range hood panel into a multi-jointed movable curtain piece, and the movable curtain pieces are connected in series through a mutually buckled structure.

[0037] The driving unit 54 is a tubular motor, which is used to make the rolling shutter panel 53 perform a circular motion of extending or rewinding around the reel 51 .

[0038] The sealing unit 31 is installed at the upper end of the lower panel 3. The sealing unit 31 is a sealing strip. The rolling shutter panel 53, the guide rail 55 and the sealing strip 31 are embedded in each other to seal, thereby achieving good sealing requirements for the rolling shutter panel 53.

[0039] It also includes an oil net 7 disposed in the range hood body 1, on which the smoke control assembly 6 is installed, and the smoke control assembly 6 includes a smoke sensing unit 61 and a control unit 62, the control unit 62 is electrically connected to the smoke sensing unit 61 and the drive unit 54, and controls the forward and reverse rotation of the drive unit 54 according to the size of the smoke detected by the smoke sensing unit 61. That is, the size of the smoke can be detected by the smoke sensing unit 61, and the smoke data can be transmitted to the control unit 62, the control unit 62 determines the size of the smoke and causes the drive unit 54 to rotate forward or reverse, and causes the rolling shutter panel 53 to move up or down, thereby freely adjusting the area size of the range hood air inlet.

[0040] The smoke sensing unit 61 is a smoke sensor, and the control unit 62 is a controller.

[0041] like Figure 4-5 As shown, when the range hood is not turned on, the rolling shutter panel 53 is in a closed state, and the rolling shutter panel 53, the guide rail 55 and the sealing strip 31 are inlaid and buckled with each other, so as to achieve a good sealing requirement of the rolling shutter panel 53, and a completely enclosed space can be formed at the air inlet, which greatly improves the sealing effect of the panel in the closed state, and can effectively solve the problems of oil fume backflow or leakage, and odor transfer between users.

[0042] When the range hood is turned on, the rolling shutter panel 53 is in an open state. Under the rotation of the driving unit 54 (tubular motor), the entire rolling shutter panel 53 can be completely stored inside the range hood. After the rolling shutter panel 53 is opened, there will be no problems on the outer surface of the product such as blocking the view, occupying the kitchen space, being easily bumped, affecting the air intake, etc.;

[0043] This embodiment not only avoids the existing technical drawbacks, but more importantly, can improve the smoking effect of the range hood and enhance product performance. After the smoke control component (smoke sensor) built into the range hood automatically detects the size of the oil smoke, the smoke control component (control unit) can automatically and accurately adjust the air inlet area according to the actual amount of oil smoke in the current user's use state. By automatically adjusting the air inlet area, the ratio of the inlet and outlet air can be controlled. The wind pressure at the air inlet after automatic adjustment by the roller shutter mechanism is also variable. The variable wind pressure can be targeted and automatically adjusted according to the actual amount of oil smoke. The outer surface will not have any problems such as blocking the line of sight, occupying kitchen space, being easy to bump, and affecting the air intake when the roller shutter panel is opened. When the roller shutter panel is closed, a completely enclosed space can be formed at the air inlet, which greatly improves the sealing effect of the panel in the closed state, and can effectively solve the problems of oil smoke backflow or leakage, and mutual odor between users.

[0044] Example 2

[0045] like Figure 6 As shown, the method for adjusting the air inlet area of ​​the automatically opening and closing range hood includes the following steps:

[0046] S1. Turn on the range hood, and the smoke control component detects the current smoke value;

[0047] S2, the smoke control component determines the size of the oil smoke;

[0048] S3: When the oil smoke is greater than the set value, the roller shutter assembly is controlled to move upward, the air inlet area is increased, and the smoke collection capacity is enhanced; when the oil smoke is less than the set value, the roller shutter assembly is controlled to move downward, the air pressure at the air inlet is increased, and the adsorption capacity is enhanced;

[0049] S4. Smoke through the air inlet and discharge the fumes into the public flue.

[0050] In this embodiment, when the amount of oil smoke is too large, the area of ​​the air inlet becomes larger, which has a cage suction effect and can effectively solve the problem that large oil smoke is easy to escape during the upward rush; when the amount of oil smoke is too small, the area of ​​the air inlet becomes smaller. The reduction in the area of ​​the air inlet can increase the wind pressure at the air inlet. After the air inlet is reduced, the increased wind pressure can effectively absorb the residual thin small oil smoke close to the pot surface, thereby realizing automatic adjustment of the air inlet area, so that the range hood is kept in the best smoking state and the oil smoke is discharged to the public flue.

[0051] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. Automatic opening and closing range hood, characterized in that: It comprises a range hood body (1), an upper panel (2), a lower panel (3), a cover shell (4), a rolling curtain assembly (5) and a smoke control assembly (6); the upper panel (2) and the lower panel (3) are respectively arranged at the upper and lower ends of the range hood body (1); the cover shell (4), the rolling curtain assembly (5) and the smoke control assembly (6) are all installed inside the upper panel (2); the rolling curtain assembly (5) is sleeved inside the cover shell (4) and automatically adjusts the air inlet area of ​​the range hood according to the size of the oil smoke detected by the smoke control assembly (6); A sealing unit (31) is installed at the upper end of the lower panel (3), and the sealing unit (31) is a sealing strip; The rolling shutter assembly (5) comprises a rolling shaft (51), a connecting piece (52), a rolling shutter panel (53), a driving unit (54), and a guide rail (55); the rolling shaft (51) is mounted in the housing (4); the connecting piece (52) is detachably mounted on the rolling shaft (51); one end of the rolling shutter panel (53) is fixed to the connecting piece (52); the driving unit (54) is mounted in the rolling shaft (51); and guide rails (55) for enabling the rolling shutter panel (53) to move up and down are respectively mounted on both sides of the range hood body (1); the driving unit (54) is connected to the rolling shaft (51) and rotates together, thereby driving the rolling shutter panel (53) connected to the rolling shaft to perform a circular motion along the guide rail (55) and around the rolling shaft (51); the circular motion can be extended and rolled back, thereby achieving adjustment of the size of the air inlet area; The rolling shutter panel (53) is formed by a plurality of shutter pieces (531) that are buckled and connected in series, thereby forming a bendable rolling shutter panel, which facilitates free adjustment of the area of ​​the air inlet at a later stage.

2. The automatically opening and closing range hood according to claim 1, characterized in that: The connecting piece (52) is a snap-on protective sleeve.

3. The automatically opening and closing range hood according to claim 2, characterized in that: The curtain pieces (531) are provided with hooks (532) and hanging rings (533) at the front and rear ends respectively, and a plurality of curtain pieces (531) are connected in series end to end via the hooks (532) and hanging rings (533) to form the rolling curtain panel (53).

4. The automatically opening and closing range hood according to claim 3, characterized in that: The driving unit (54) is a tubular motor.

5. The automatically opening and closing range hood according to claim 4, characterized in that: It also includes an oil net (7) arranged in the range hood body (1), the smoke control component (6) being mounted on the oil net (7), the smoke control component (6) comprising a smoke sensing unit (61) and a control unit (62), the control unit (62) being electrically connected to the smoke sensing unit (61) and the drive unit (54), and controlling the forward and reverse rotation of the drive unit (54) according to the amount of oil smoke detected by the smoke sensing unit (61).

6. The automatically opening and closing range hood according to claim 5, characterized in that: The smoke sensing unit (61) is a smoke sensor, and the control unit (62) is a controller.

7. The method for adjusting the air inlet area of ​​an automatically opening and closing range hood according to any one of claims 1 to 6 is characterized in that: The steps include: S1. Turn on the range hood, and the smoke control component detects the current smoke value; S2, the smoke control component determines the size of the oil smoke; S3: When the oil smoke is greater than the set value, the roller shutter assembly is controlled to move upward, the air inlet area is increased, and the smoke collection capacity is enhanced; when the oil smoke is less than the set value, the roller shutter assembly is controlled to move downward, the air pressure at the air inlet is increased, and the adsorption capacity is enhanced; S4. Smoke through the air inlet and discharge the fumes into the public flue.

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