A lift-type range hood with a variable smoking area

Abstract

The present invention provides a lift-type range hood with a variable smoking area, comprising: a housing and a rectifying plate, and a smoke inlet channel is arranged between the housing and the rectifying plate. Among them, a lifting assembly is arranged in the smoke inlet channel, dividing the smoke inlet channel into a first smoke inlet channel and a second smoke inlet channel. By the rise and fall of the lifting assembly, the opening degrees of the first smoke inlet channel and the second smoke inlet channel are changed. The lift-type range hood with a variable smoking area provided by the present invention changes the layout of the smoke inlet channel and the corresponding negative pressure value through the lifting assembly, thereby changing the suction force of smoking and further improving the smoking efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of machinery, and relates to a range hood, in particular to a liftable range hood with a variable smoking area. Background Art

[0002] Currently, the commonly used household range hoods are generally top - suction range hoods. The smoking area of this range hood is located in the middle of its hood body, and the area and position of the smoking area are relatively constant, so that the suction force generated in the smoking area is also constant. When the amount of cooking fumes is large, the fumes that have not entered the smoking area will diffuse to both sides, resulting in a decrease in the smoking efficiency.

[0003] In summary, it is necessary to design a range hood that can change the suction force of the smoking area and improve the smoking efficiency. Summary of the Invention

[0004] The purpose of the present invention is to address the above - mentioned problems in the existing technology and propose a liftable range hood with a variable smoking area that can change the suction force of the smoking area and improve the smoking efficiency.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A liftable range hood with a variable smoking area includes: a housing and a rectifying plate, and a smoke inlet passage is provided between the housing and the rectifying plate. Among them, a lifting assembly is arranged in the smoke inlet passage, which divides the smoke inlet passage into a first smoke inlet passage and a second smoke inlet passage. By the up - and - down movement of the lifting assembly, the opening degrees of the first smoke inlet passage and the second smoke inlet passage are changed.

[0006] In the above - mentioned liftable range hood with a variable smoking area, when the lifting assembly is in the high position, the second smoke inlet passage is in a sealed state, while the first smoke inlet passage reaches the maximum opening degree; when the lifting assembly is in the middle position, both the first smoke inlet passage and the second smoke inlet passage are in a connected state; when the lifting assembly is in the low position, the first smoke inlet passage is in a closed state, and the second smoke inlet passage is in a connected state.

[0007] In the above - mentioned liftable range hood with a variable smoking area, the lifting assembly includes a power source installed in the housing, a transmission member connected to the power source, and a moving plate fixedly connected to the transmission member. By driving the up - and - down movement of the transmission member by the power source, the up - and - down movement of the moving plate is realized.

[0008] In the above - mentioned liftable range hood with a variable smoking area, when the power source is a cylinder or a hydraulic cylinder, and a piston rod is provided at one end of the cylinder or the hydraulic cylinder; the transmission member includes a rack, and pointed teeth are provided on both sides of the rack. Among them, the two ends of the rack are respectively connected to the piston rod and the moving plate; two gears are respectively located on both sides of the rack and are meshed with the two sides of the rack.

[0009] In the above-mentioned lift-type range hood with variable smoking area, when the power source is a motor, the number of motors is two and they are symmetrically arranged. Among them, the output shaft of each motor is nested with each gear, and a rack is arranged between the two gears, and one end of the rack is connected to the moving plate.

[0010] In the above-mentioned lift-type range hood with variable smoking area, the moving plate on the side close to the second smoke inlet channel is bent upward to form a vertical plate.

[0011] In the above-mentioned lift-type range hood with variable smoking area, a vertical limit post is arranged on the moving plate, and one end of the limit post is connected to the moving plate, and the other end of the limit post is a free end.

[0012] In the above-mentioned lift-type range hood with variable smoking area, the free end of the limit post is in flexible contact with the inner side wall of the housing.

[0013] In the above-mentioned lift-type range hood with variable smoking area, an oil mesh is arranged at the first smoke inlet channel, and the oil mesh is inclined downward from front to back. Among them, an oil collecting cup is detachably connected to the rear part of the oil mesh.

[0014] Compared with the prior art, the lift-type range hood with variable smoking area provided by the present invention changes the layout of the smoke inlet channel and the corresponding negative pressure value through the lifting assembly, thereby changing the suction force of smoking, and further improving the smoking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a lift-type range hood with variable smoking area of the present invention.

[0016] Figure 2 It is a sectional view of the first use state of a lift-type range hood with variable smoking area of the present invention.

[0017] Figure 3 It is a sectional view of the second use state of a lift-type range hood with variable smoking area of the present invention.

[0018] In the figure, 100, housing; 110, first smoke inlet channel; 120, second smoke inlet channel; 200, rectifying plate; 300, lifting assembly; 310, power source; 320, transmission member; 330, moving plate; 331, vertical plate; 340, limit post; 400, oil collecting cup. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following are specific embodiments of the present invention in combination with the drawings, and the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0020] As Figures 1 to 3 shown, a lift type range hood with variable smoking area provided by the present invention includes: a housing 100 and a rectifying plate 200, and a smoke inlet passage is provided between the housing 100 and the rectifying plate 200. Among them, a lifting assembly 300 is provided in the smoke inlet passage, which divides the smoke inlet passage into a first smoke inlet passage 110 and a second smoke inlet passage 120. By the rising and falling of the lifting assembly 300, the opening degrees of the first smoke inlet passage 110 and the second smoke inlet passage 120 are changed.

[0021] In the existing range hoods, there is only one smoke inlet passage, that is, the first smoke inlet passage 110, which also serves as the main smoke inlet passage, and the opening degree of the main smoke inlet passage is fixed and cannot be changed. However, in this embodiment, by the upward movement of the lifting assembly 300, the opening degree of the main smoke inlet passage is enlarged, the negative pressure value in the main smoke inlet passage is increased, and thus the smoking efficiency is accelerated and the smoking effect is improved.

[0022] In this embodiment, the moving stroke of the lifting assembly 300 is the relative distance between the upper side of the rectifying plate 200 and the inner side of the housing 100. When the lifting assembly 300 is at the high position, the second smoke inlet passage 120 is in a sealed state at this time, while the first smoke inlet passage 110 reaches the maximum opening degree, that is, the maximum negative pressure value is formed in the first smoke inlet passage 110, and the smoking effect of the first smoke inlet passage 110 reaches the best; when the lifting assembly 300 is at the middle position, the first smoke inlet passage 110 and the second smoke inlet passage 120 are both in a communicating state at this time. Most of the oil fumes can be absorbed through the first smoke inlet passage 110, while a small part of the oil fumes can be absorbed through the second smoke inlet passage 120. Among them, when the user is cooking, most of the generated oil fumes rise vertically and are sucked into the range hood through the first smoke inlet passage 110, while a small part of the oil fumes diffuse to both sides. At this time, the small part of the oil fumes can be sucked into the range hood through the second smoke inlet passage 120, so as to improve the smoking efficiency. In addition, when most of the oil fumes enter the first smoke inlet passage 110, they will impact the surface of the lifting assembly 300. At this time, the oil fumes can move around along the surface of the lifting assembly 300, and the lifting assembly 300 is respectively connected to the first smoke inlet passage 110 and the second smoke inlet passage 120, so that the oil fumes can quickly enter the first smoke inlet passage 110 and the second smoke inlet passage 120 without disorder, and thus the smoking efficiency is improved; when the lifting assembly 300 is at the low position, the first smoke inlet passage 110 is in a closed state at this time, while the second smoke inlet passage 120 is in a communicating state. The oil fumes generated by cooking can slowly enter the second smoke inlet passage 120 along the surface of the rectifying plate 200 and the surface of the lifting assembly 300, avoiding the disorder of the oil fumes.

[0023] The lift - type range hood with variable smoking area provided by the present invention changes the layout of the smoke - inlet channel and the corresponding negative pressure value through the lifting component 300, thereby changing the suction force of smoking and further improving the smoking efficiency.

[0024] Preferably, as Figures 1 to 3 shown, the lifting component 300 includes a power source 310 installed in the housing 100, a transmission member 320 connected to the power source 310, and a moving plate 330 fixedly connected to the transmission member 320. By driving the transmission member 320 to move up and down by the power source 310, the up - and - down movement of the moving plate 330 is finally realized, thereby changing the respective opening degrees and respective negative pressure values of the first smoke - inlet channel 110 and the second smoke - inlet channel 120, and further adapting to different oil - fume concentrations.

[0025] Further preferably, as Figures 1 to 3 shown, when the power source 310 is a cylinder or a hydraulic cylinder, and a piston rod is provided at one end of the cylinder or the hydraulic cylinder; the transmission member 320 includes a rack, and pointed teeth are provided on both sides of the rack. Wherein, both ends of the rack are respectively connected to the piston rod and the moving plate 330; two gears are respectively located on both sides of the rack and mesh with both sides of the rack; by pulling the rack to move up and down by the cylinder or the hydraulic cylinder, and through the meshing transmission between the rack and the gears, the running track of the rack is regularized, and the meshing transmission between the gear and the rack has a certain self - locking function, so that the rack can stay stably at any position, thereby enabling the moving plate 330 to stop smoothly at any position within its moving stroke range.

[0026] Further preferably, as Figures 1 to 3 shown, when the power source 310 is a motor, the number of motors is two and they are symmetrically arranged. Wherein, the output shaft of each motor is nested with each gear, and a rack is provided between the two gears, and one end of the rack is connected to the moving plate 330. By synchronously driving the two gears to rotate by the two motors, the rack moves up and down under the action of the meshing transmission with the gears, thereby driving the up - and - down movement of the moving plate 330.

[0027] According to the above - mentioned content, when the power source 310 is a cylinder or a hydraulic cylinder, the rack is the driving part and the gear is the driven part, thereby realizing the up - and - down movement of the moving plate 330; when the power source 310 is a motor, the gear is the driving part and the rack is the driven part, thereby realizing the up - and - down movement of the moving plate 330. The above two implementation manners can both realize the lifting of the moving plate 330, change the opening degrees of the first smoke - inlet channel 110 and the second smoke - inlet channel 120 and the corresponding negative pressure values, thereby changing their respective smoking efficiencies and adapting to different oil - fume concentrations.

[0028] Preferably, as Figures 1 to 3As shown in the figure, the moving plate 330 near one side of the second smoke inlet channel 120 is bent upward to form a vertical plate 331. When the oil fume enters the second smoke inlet channel 120, under the action of the vertical plate 331 and the inner side wall of the housing 100, the moving direction of the oil fume can be regularized, avoiding the disorder phenomenon of the oil fume after entering the second smoke inlet channel 120, thereby improving the smoking efficiency.

[0029] Preferably, as Figures 1 to 3 shown in the figure, a vertical limiting post 340 is arranged on the moving plate 330, and one end of the limiting post 340 is connected to the moving plate 330, and the other end of the limiting post 340 is a free end. When the lifting assembly 300 is in the high position, the free end of the limiting post 340 touches the inner side wall of the housing 100, and at this time, the first smoke inlet channel 110 is in the maximum opening state; when the lifting assembly 300 is in the middle position, there is a gap between the free end of the limiting post 340 and the inner side wall of the housing 100, thereby communicating with the second smoke inlet channel 120; when the lifting assembly 300 is in the low position, the gap between the free end of the limiting post 340 and the inner side wall of the housing 100 is further enlarged. At this time, the lower surface of the moving plate 330 (the limiting post 340 is connected to the upper surface of the moving plate 330) touches the rectifying plate 200, and the first smoke inlet channel 110 is in the closed state, while the second smoke inlet channel 120 reaches the maximum opening state.

[0030] Further preferably, as Figures 1 to 3 shown in the figure, the contact between the free end of the limiting post 340 and the inner side wall of the housing 100 is flexible, avoiding the rupture of the limiting post 340 and the inner side wall of the housing 100 due to contact, thereby prolonging the service life of the limiting post 340 and the housing 100. In addition, it avoids the noise generated when the free end of the limiting post 340 touches the inner side wall of the housing 100.

[0031] Further preferably, as Figures 1 to 3 shown in the figure, an oil net is arranged at the first smoke inlet channel 110, and the oil net is inclined downward from front to back. Among them, an oil collecting cup 400 is detachably connected to the rear part of the oil net. When the oil fume enters the first smoke inlet channel 110, the waste oil in the oil fume is blocked on the oil net, and at this time, the waste oil flows into the oil collecting cup 400 along the oil net, completing the separation of the oil fume.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A lift-type range hood with a variable smoking area, characterized in that, it includes: a housing and a rectifying plate, and a smoke inlet passage is provided between the housing and the rectifying plate. Among them, a lifting assembly is arranged in the smoke inlet passage, dividing the smoke inlet passage into a first smoke inlet passage and a second smoke inlet passage. By the rise and fall of the lifting assembly, the opening degrees of the first smoke inlet passage and the second smoke inlet passage are changed; when the lifting assembly is at the high position, the second smoke inlet passage is in a sealed state, while the first smoke inlet passage reaches the maximum opening degree; when the lifting assembly is at the middle position, both the first smoke inlet passage and the second smoke inlet passage are in a connected state; when the lifting assembly is at the low position, the first smoke inlet passage is in a closed state, and the second smoke inlet passage is in a connected state; the lifting assembly includes a power source installed in the housing, a transmission member connected to the power source, and a moving plate fixedly connected to the transmission member. By driving the transmission member to move up and down by the power source, the up and down movement of the moving plate is realized; the moving plate on the side close to the second smoke inlet passage is bent upward to form a vertical plate; an oil mesh is provided at the first smoke inlet passage.

2. The lift-type range hood with a variable smoking area according to claim 1, characterized in that, when the power source is a cylinder or a hydraulic cylinder, and a piston rod is provided at one end of the cylinder or the hydraulic cylinder; the transmission member includes a rack, and pointed teeth are provided on both sides of the rack. Among them, the two ends of the rack are respectively connected to the piston rod and the moving plate; two gears are respectively located on both sides of the rack and mesh with both sides of the rack.

3. The lift-type range hood with a variable smoking area according to claim 1, characterized in that, when the power source is a motor, the number of motors is two and they are symmetrically arranged. Among them, the output shaft of each motor is nested with each gear, and a rack is provided between the two gears, and one end of the rack is connected to the moving plate.

4. The lift-type range hood with a variable smoking area according to claim 1, characterized in that, a vertical limiting column is provided on the moving plate, and one end of the limiting column is connected to the moving plate, and the other end of the limiting column is a free end.

5. The lift-type range hood with a variable smoking area according to claim 4, characterized in that, the free end of the limiting column is in flexible contact with the inner side wall of the housing.

6. The lift-type range hood with a variable smoking area according to claim 1, characterized in that, the oil mesh is inclined downward from front to back, and an oil collecting cup is detachably connected to the rear part of the oil mesh.

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