Lifting range hood with isolation function

Abstract

The invention belongs to the technical field of range hoods, and discloses a lifting range hood with an isolation function, the lifting range hood comprises a main body shell and a fan system mounted in the main body shell, the main body shell is further provided with a fixed air duct communicated with the input end of the fan system, and the lifting range hood further comprises a lifting isolation air duct arranged in the fixed air duct; and the lifting mechanism is mounted in the fixed air duct. According to the scheme, the lifting mechanism is operated to drive the lifting air duct to move downwards, so that the cylindrical rack synchronously moves downwards along with the lifting air duct under the action of the elastic force of the bottom of the spring combined rod; the air supply mechanism can synchronously operate to pump clean gas into the isolation baffle and enable the gas to be sprayed outwards through the second exhaust outlet and the first exhaust outlet, so that an air curtain is formed on the side, facing oil smoke, of the isolation baffle, and the situation that a large amount of oil smoke emitted instantly is attached to the bottom of the main body shell to form oil dirt is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of range hoods, and in particular relates to a lifting range hood with an isolation function. Background Art

[0002] The characteristic of the lifting range hood is that the main part of the range hood (mainly the smoke hood or air intake) can be automatically raised and lowered as needed, thus forming a significant difference from the traditional fixed range hood in terms of visual and user experience.

[0003] When the lift-type range hood is in operation, the isolated lift duct is driven downward to the designated position by a screw motor. The oil smoke is then extracted and separated through the air intake and lift duct by the fan system and discharged through the exhaust port, thereby achieving the separation and discharge of the oil smoke. In actual use, a large amount of oil smoke is generated instantly, and it will diffuse to the outside of the air intake before the range hood can completely capture it. As a result, the oil gas carried by this part of the oil smoke adheres to the bottom of the main shell and accumulates over a period of time to form grease. Therefore, the user needs to clean it frequently to prevent the grease from falling into the pot and affecting the user's health. Frequent cleaning of the grease will cause user disgust. Therefore, in order to solve the above problem, a lift-type range hood with an isolation function is proposed. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a lifting range hood with an isolation function, which solves the problem that the oil gas carried by the smoke will adhere to the bottom of the main shell to form oil stains and require users to clean frequently.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a lift range hood with an isolation function, comprising a main body housing and a fan system installed therein, the main body housing further being provided with a fixed air duct connected to an input end of the fan system, and further comprising: a lift isolation air duct disposed in the fixed air duct; a lift mechanism installed in the fixed air duct for driving the lift isolation air duct downward; The lifting isolation air duct includes a lifting air duct movably installed in the fixed air duct, the top of the lifting air duct is connected to the fixed air duct, an isolation baffle is hinged on the lifting air duct, and a group of driving mechanisms are symmetrically arranged on the lifting air duct for driving the isolation baffle to rotate and open after the lifting air duct descends. The isolation baffle is provided with ribs on the inward side, and a plurality of exhaust ports 2 connected to the isolation baffle cavity are opened on the ribs of the isolation baffle; The main body shell is also provided with an air supply mechanism for pumping gas into the isolation baffle.

[0006] Preferably, the lifting mechanism includes a screw motor fixedly installed in a fixed air duct, a slider is sleeved on the screw part of the screw motor, a connecting rod is symmetrically fixed to the bottom end of the slider, and the bottom of the connecting rod is fixedly connected to the bottom of the lifting air duct.

[0007] Preferably, a plurality of exhaust vents are equidistantly formed at the bottom end of the isolation baffle.

[0008] Preferably, the air supply mechanism includes a filter fan and an air duct arranged in the main body shell, the output end of the filter fan is connected to the input end of the air duct, the two output ends of the air duct extend into the lifting air duct, and the part of the air duct located in the lifting air duct is a vertically arranged corrugated pipe, the output end of the air duct is fixedly connected to a connecting piece, and the connecting piece is fixedly installed in the lifting air duct, and the connecting piece bearing is sleeved and connected to the isolation baffle shaft.

[0009] Preferably, the driving mechanism includes a cylindrical rack vertically movably installed in the lifting air duct, a spring combination rod movably installed inside the cylindrical rack, the top end of the spring combination rod extends upward to the inside of the fixed air duct and is fixedly connected to the fixed air duct, the spring at the bottom end of the spring combination rod is in a compressed state in the initial state, and a clockwork gear is movably sleeved on the outer periphery of the shaft of the isolation baffle, the spring part on the clockwork gear is fixedly connected to the shaft body of the isolation baffle, and the gear part of the clockwork gear is engaged with the cylindrical rack.

[0010] Preferably, a counterweight that can move in the lifting air duct is symmetrically fixed to the rotating shaft of the isolation baffle; The end of the rotating shaft of the lifting air duct is also sleeved with a rubber ring, and the outer periphery of the rubber ring can also contact the inner wall of the connecting piece.

[0011] Preferably, a guide wheel is movably mounted on the bottom of the main body shell, and the upper surface of the isolation baffle can contact the guide wheel when the isolation baffle moves upward.

[0012] Preferably, the driving mechanism can also be replaced by a DC reduction motor, which is installed in the lifting air duct so that its output end is transmission-connected to the shaft of the isolation baffle.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The above scheme drives the lifting duct downward by operating the lifting mechanism. The cylindrical rack is subjected to the elastic force of the bottom of the spring combination rod and moves downward synchronously with the lifting duct. When the cylindrical rack is limited by the spring combination rod and cannot move downward, the lifting duct continues to move downward. At this time, the clockwork gear will move along the cylindrical rack, thereby causing the clockwork gear itself to rotate and accumulate force on the clockwork gear. When the isolation baffle is separated from the fixed air duct, the bottom end of the spring combination rod supports the cylindrical rack to maintain a constant relative height and locks the clockwork gear. At this time, the elastic force of the clockwork part on the clockwork gear will drive the isolation baffle to rotate and fold upward. In the process of extracting oil smoke from the device, the air supply mechanism can operate synchronously to pump clean air into the isolation baffle and spray the air outward through the second exhaust port and the first exhaust port, thereby forming an air curtain on the side of the isolation baffle facing the oil smoke, thereby preventing a large amount of oil smoke emitted instantly from adhering to the bottom of the main shell to form oil stains. The above solution reduces the elastic force required to be provided by the spring on the clockwork gear by driving the counterweight to rotate synchronously when the isolation baffle rotates. At the same time, the setting of the rubber ring slows down the elastic force provided by the spring part on the clockwork gear to drive the isolation baffle to rotate rapidly, thereby avoiding the isolation baffle from colliding during the deployment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front plan perspective view of the present invention; Figure 3 It is a side cross-sectional structural schematic diagram of the isolation box of the present invention; Figure 4 This is a schematic structural diagram of the lifting air duct of the present invention; Figure 5 This is a schematic side cross-sectional view of the lifting air duct of the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 Schematic diagram of the structure of the air supply mechanism of the present invention; Figure 8 This is a schematic structural diagram of the isolation baffle of the present invention; Figure 9 Schematic diagram of the structure of the driving mechanism of the present invention; Figure 10 It is a side plan view of the lowered lifting isolation air duct of the present invention.

[0015] In the figure: 1. Main casing; 11. Fixed air duct; 12. Fan system; 13. Guide wheel; 2. Lifting isolation air duct; 21. Lifting air duct; 22. Isolation baffle; 221. Exhaust port 1; 222. Counterweight; 223. Rubber ring; 23. Driving mechanism; 231. Cylindrical rack; 232. Spring combination rod; 233. Clockwork gear; 24. Exhaust port 2; 3. Air supply mechanism; 31. Filter fan; 32. Air duct; 33. Connecting piece; 4. Lifting mechanism; 41. Screw motor; 42. Slider; 43. Connecting rod. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention 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 making creative efforts are within the scope of protection of the present invention.

[0017] like Figures 1 to 10 As shown, the present invention provides a lift range hood with an isolation function, comprising a main housing 1 and a fan system 12 installed therein, the main housing 1 further being provided with a fixed air duct 11 connected to an input end of the fan system 12, and further comprising: a lift isolation air duct 2 disposed in the fixed air duct 11; a lift mechanism 4 installed in the fixed air duct 11 for driving the lift isolation air duct 2 downward; The lifting isolation air duct 2 includes a lifting air duct 21 movably installed in the fixed air duct 11. The top of the lifting air duct 21 is connected to the fixed air duct 11. An isolation baffle 22 is hinged on the lifting air duct 21. A set of driving mechanisms 23 are symmetrically arranged on the lifting air duct 21 for driving the isolation baffle 22 to rotate and open after the lifting air duct 21 descends. The isolation baffle 22 is provided with ribs on the inward side, and a plurality of exhaust ports 24 are opened on the ribs of the isolation baffle 22 and connected to the cavity of the isolation baffle 22. The drive mechanism 23 includes a cylindrical rack 231 movably mounted vertically in the lifting air duct 21. A spring combination rod 232 is movably mounted inside the cylindrical rack 231. The top end of the spring combination rod 232 extends upward into the interior of the fixed air duct 11 and is fixedly connected to the fixed air duct 11. The spring at the bottom end of the spring combination rod 232 is in a compressed state in the initial state. A spring gear 233 is movably sleeved on the outer periphery of the shaft of the isolation baffle 22. The spring portion of the spring gear 233 is fixedly connected to the shaft of the isolation baffle 22, and the gear portion of the spring gear 233 meshes with the cylindrical rack 231. The main housing 1 is also provided with an air supply mechanism 3 for pumping gas into the isolation baffle 22; The lifting mechanism 4 includes a screw motor 41 fixedly installed in the fixed air duct 11. A slider 42 is sleeved on the screw portion of the screw motor 41. The bottom end of the slider 42 is symmetrically fixed with a connecting rod 43. The bottom of the connecting rod 43 is fixedly connected to the bottom of the lifting air duct 21. With the above solution, by operating the lifting mechanism 4 to drive the lifting duct 21 downward, the cylindrical rack 231 is subjected to the elastic force at the bottom of the spring combination rod 232 and moves downward synchronously with the lifting duct 21. When the cylindrical rack 231 is limited by the spring combination rod 232 and cannot move downward, the lifting duct 21 continues to move downward. At this time, the clockwork gear 233 moves along the cylindrical rack 231, thereby rotating the clockwork gear 233 itself and storing power on the clockwork gear. When the isolation baffle 22 is separated from the fixed duct 11, the cylindrical rack 231 is supported by the bottom end of the spring combination rod 232. The rack 231 maintains a constant relative height and locks the spring gear 233. At this time, the spring portion of the spring gear 233 drives the isolation baffle 22 to rotate and fold upward. During the process of extracting oil smoke, the air supply mechanism 3 operates synchronously to pump clean air into the isolation baffle 22 and eject the air outward through the second exhaust port 24 and the first exhaust port 221, thereby forming an air curtain on the side of the isolation baffle 22 facing the oil smoke. This prevents a large amount of oil smoke emitted instantly from adhering to the bottom of the main housing 1 and forming oil stains. Furthermore, the drive mechanism 23 can also be replaced by a DC reduction motor, which is installed in the lifting air duct 21 so that its output end is transmission-connected to the shaft of the isolation baffle 22. Compared with the mechanical structure, its structure is simpler, but its reliability is slightly lower than that of the mechanical structure. It is worth noting that the elastic force of the spring at the bottom of the counterweight 222 must be greater than the elastic force of the spring on the rubber ring 223. This can prevent the rubber ring 223 from rotating and driving the exhaust port 1 221 to move after the spring on the rubber ring 223 is compressed.

[0018] like Figure 7 As shown, a plurality of exhaust ports 221 are equidistantly formed at the bottom end of the isolation baffle 22; By adopting the above solution, an exhaust port 221 is provided at the bottom of the isolation baffle 22. When the isolation baffle 22 is folded upward and opened, the gas can still be discharged through the exhaust port 221, thereby forming a gas barrier at the bottom of the main shell 1, that is, the part not covered by the isolation baffle 22, further reducing the overflowing oil smoke from blowing to the bottom of the main shell 1 and causing oil accumulation, and reducing the frequency of cleaning required by the user.

[0019] like Figure 2-Figure 5 and Figure 7-Figure 9As shown, the air supply mechanism 3 includes a filter fan 31 and an air duct 32 disposed in the main housing 1. The output end of the filter fan 31 is connected to the input end of the air duct 32. The two output ends of the air duct 32 extend into the lifting air duct 21. The portion of the air duct 32 located in the lifting air duct 21 is a vertically arranged corrugated pipe. The output end of the air duct 32 is fixedly connected to a connector 33, and the connector 33 is fixedly installed in the lifting air duct 21. The connector 33 is provided with a bearing sleeve and is connected to the shaft of the isolation baffle 22. By adopting the above solution, through the setting of the air duct 32, when the lifting air duct 21 descends, the bellows portion of the air duct 32 located inside the lifting air duct 21 will extend, and when the isolation baffle 22 rotates, the connecting piece 33 can stably connect the isolation baffle 22 and the air duct 32 to ensure that the air duct 32 can stably input gas into the lifting air duct 21.

[0020] like Figure 8 and Figure 9 As shown, a counterweight 222 that can move within the lifting air duct 21 is symmetrically fixed to the rotating axis of the isolation baffle 22; A rubber ring 223 is also sleeved on the end of the rotating shaft of the lifting air duct 21, and the outer periphery of the rubber ring 223 can also contact the inner wall of the connecting member 33; By adopting the above solution, the counterweight 222 is driven to rotate synchronously when the isolation baffle 22 rotates, thereby reducing the elastic force required to be provided by the spring on the clockwork gear 233. At the same time, the setting of the rubber ring 223 slows down the situation in which the spring part on the clockwork gear 233 provides elastic force to drive the isolation baffle 22 to rotate rapidly, thereby avoiding the isolation baffle 22 from colliding during the deployment process.

[0021] like Figure 2 and Figure 3 As shown, a guide wheel 13 is movably mounted on the bottom of the main housing 1, and the upper surface of the isolation baffle 22 can contact the guide wheel 13 when the isolation baffle 22 moves upward; By adopting the above scheme, through the setting of the guide wheel 13, when the lifting air duct 21 drives the isolation baffle 22 upward, the guide wheel 13 will abut the upper surface of the isolation baffle 22, preventing the outer wall of the isolation baffle 22 from being scratched by the main shell 1, and at the same time reducing the friction between the main shell 1 and the isolation baffle 22.

[0022] The working principle and use process of the present invention: When the lifting mechanism 4 drives the lifting duct 21 downward, the cylindrical rack 231 is subjected to the elastic force of the bottom of the spring combination rod 232 and moves downward synchronously with the lifting duct 21. When the cylindrical rack 231 is limited by the spring combination rod 232 and cannot move downward, the lifting duct 21 continues to move downward. At this time, the clockwork gear 233 moves along the cylindrical rack 231, thereby rotating the clockwork gear 233 itself and storing power on the clockwork gear. When the isolation baffle 22 is separated from the fixed duct 11, the cylindrical rack 231 is supported by the bottom end of the spring combination rod 232. The spring 231 maintains a constant relative height and locks the clockwork gear 233. At this time, the spring portion of the clockwork gear 233 drives the isolation baffle 22 to rotate and fold upward under the elastic force of the spring portion. During the process of extracting oil smoke, the air supply mechanism 3 can operate synchronously to pump clean air into the isolation baffle 22 and eject the air outward through the second exhaust port 24 and the first exhaust port 221, thereby forming an air curtain on the side of the isolation baffle 22 facing the oil smoke, thereby preventing the large amount of oil smoke emitted instantly from adhering to the bottom of the main housing 1 and forming oil stains. When the isolation baffle 22 rotates, the counterweight 222 arranged thereon will also rotate synchronously, thereby reducing the elastic force required to be provided by the spring on the clockwork gear 233. At the same time, the setting of the rubber ring 223 slows down the elastic force provided by the clockwork part on the clockwork gear 233 to drive the isolation baffle 22 to rotate rapidly, thereby avoiding the isolation baffle 22 from colliding during the deployment process.

[0023] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0024] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A lifting range hood with an isolation function, comprising a main housing (1) and a fan system (12) installed therein, wherein the main housing (1) is further provided with a fixed air duct (11) connected to an input end of the fan system (12), characterized in that: Also includes: A lifting isolation air duct (2) is arranged in the fixed air duct (11); A lifting mechanism (4) is installed in the fixed air duct (11) and is used to drive the lifting isolation air duct (2) downward; The lifting isolation air duct (2) includes a lifting air duct (21) movably installed in the fixed air duct (11), the top of the lifting air duct (21) is connected to the fixed air duct (11), an isolation baffle (22) is hingedly connected to the lifting air duct (21), and a group of driving mechanisms (23) are symmetrically arranged on the lifting air duct (21) for driving the isolation baffle (22) to rotate and open after the lifting air duct (21) moves downward, and the isolation baffle (22) is provided with a rib on the inner side, and a plurality of exhaust ports (24) are opened on the rib part of the isolation baffle (22) and are connected to the cavity of the isolation baffle (22); The main body shell (1) is also provided with an air supply mechanism (3) for pumping gas into the isolation baffle (22).

2. The lifting range hood with isolation function according to claim 1, characterized in that: The lifting mechanism (4) includes a screw motor (41) fixedly installed in the fixed air duct (11), a slider (42) is sleeved on the screw portion of the screw motor (41), a connecting rod (43) is symmetrically fixed to the bottom end of the slider (42), and the bottom of the connecting rod (43) is fixedly connected to the bottom of the lifting air duct (21).

3. The lifting range hood with isolation function according to claim 1, characterized in that: The bottom end of the isolation baffle (22) is provided with a plurality of exhaust ports (221) at equal intervals.

4. The lifting range hood with isolation function according to claim 1, characterized in that: The air supply mechanism (3) comprises a filter fan (31) and an air duct (32) arranged in the main body shell (1); the output end of the filter fan (31) is connected to the input end of the air duct (32); the two output ends of the air duct (32) extend into the lifting air duct (21); and the portion of the air duct (32) located in the lifting air duct (21) is a vertically arranged corrugated pipe; the output end of the air duct (32) is fixedly connected to a connector (33), and the connector (33) is fixedly installed in the lifting air duct (21); the connector (33) is provided with a bearing sleeve and is connected to the shaft of the isolation baffle (22).

5. The lifting range hood with isolation function according to claim 4, characterized in that: The driving mechanism (23) comprises a cylindrical rack (231) movably mounted in a vertical manner in the lifting air duct (21); a spring combination rod (232) is movably mounted inside the cylindrical rack (231); the top end of the spring combination rod (232) extends upward into the interior of the fixed air duct (11) and is fixedly connected to the fixed air duct (11); the spring at the bottom end of the spring combination rod (232) is in a compressed state in an initial state; a spring gear (233) is movably sleeved on the outer periphery of the shaft of the isolation baffle (22); a spring portion on the spring gear (233) is fixedly connected to the shaft of the isolation baffle (22), and a gear portion of the spring gear (233) is meshed with the cylindrical rack (231).

6. The lifting range hood with isolation function according to claim 5, characterized in that: A counterweight (222) that is movable within the lifting air duct (21) is symmetrically fixed to the rotation axis of the isolation baffle (22); A rubber ring (223) is also sleeved on the end of the rotating shaft of the lifting air duct (21), and the outer periphery of the rubber ring (223) can also contact the inner wall of the connecting member (33).

7. The lifting range hood with isolation function according to claim 5, characterized in that: A guide wheel (13) is also movably mounted on the bottom of the main body shell (1), and the upper surface of the isolation baffle (22) can contact the guide wheel (13) when the isolation baffle (22) moves upward.

8. The lifting range hood with isolation function according to claim 1, characterized in that: The driving mechanism (23) can also be replaced by a DC reduction motor, which is installed in the lifting air duct (21) so that its output end is connected to the shaft of the isolation baffle (22).

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