Lifting range hood with isolation function

Abstract

The application belongs to the technical field of range hood, and discloses a lifting range hood with isolation function, which comprises a main body shell and a fan system installed in the main body shell, a fixed air duct in communication with the input end of the fan system is further arranged on the main body shell, and the lifting range hood further comprises a lifting isolation air duct arranged in the fixed air duct and a lifting mechanism installed in the fixed air duct. According to the above scheme, the lifting mechanism is driven to drive the lifting air duct to move downward, so that the cylindrical rack is driven to move downward synchronously with the lifting air duct under the elastic force of the bottom of the spring combination rod, when the cylindrical rack cannot move downward due to the limitation of the spring combination rod, in the process of extracting oil fume by the device, the air supply mechanism can synchronously operate to pump clean gas into the isolation baffle, and the gas is sprayed out through the air outlet two and the air outlet one, so that the air curtain is formed on the side of the isolation baffle facing the oil fume, thereby avoiding the situation that a large amount of oil fume emitted instantaneously is attached to the bottom of the main body shell to form oil dirt.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of range hood, in particular to a lifting range hood with isolation function. BACKGROUND

[0002] The lifting range hood is characterized in that the main body part (mainly the smoke collecting cover or air inlet) of the range hood can be automatically lifted according to needs, thereby forming a significant difference with the traditional fixed range hood in vision and use experience.

[0003] When the lifting range hood works, the isolation lifting air duct is driven by the lead screw motor to descend to the designated position, and then the fan system draws and separates the oil fume through the air inlet and the lifting air duct, and then discharges it through the smoke outlet, so as to separate and discharge the oil fume. In actual use, a large amount of oil fume is generated instantaneously, which will spread outside the air inlet before the range hood can fully capture it, so that the oil and gas carried by this part of the oil fume will adhere to the bottom of the main body shell and form oil stains after a period of accumulation, so the user needs to clean frequently to avoid oil stains falling into the pot and affecting the user's health, and frequent cleaning of oil stains will cause the user's aversion. Therefore, in order to solve the above problems, a lifting range hood with isolation function is proposed. SUMMARY

[0004] In order to solve the problems in the background art, the present application provides a lifting range hood with isolation function, which solves the problem that the oil and gas carried by the oil fume will adhere to the bottom of the main body shell to form oil stains, which needs to be cleaned frequently by the user.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: a lifting range hood with isolation function, comprising a main body shell and a fan system installed therein, and a fixed air duct in communication with the input end of the fan system is further arranged on the main body shell, further comprising: a lifting isolation air duct arranged in the fixed air duct; a lifting mechanism installed in the fixed air duct for driving the lifting isolation air duct to descend.

[0006] The lifting isolation air duct comprises a lifting air duct movably installed in the fixed air duct, the top end of the lifting air duct is in communication with the fixed air duct, a isolation baffle is hinged on the lifting air duct, a set of driving mechanisms for driving the isolation baffle to rotate and open after the lifting air duct descends are symmetrically arranged on the lifting air duct, and a plurality of air outlet two in communication with the cavity of the isolation baffle are arranged on the rib part of the isolation baffle.

[0007] The main body shell is further provided with a air supply mechanism for pumping gas into the isolation baffle.

[0008] Preferably, the lifting mechanism comprises a screw rod motor fixedly installed in the fixed air duct, a sliding block is sleeved on a screw rod part of the screw rod motor, a connecting rod is symmetrically fixedly connected to a bottom end of the sliding block, and a bottom of the connecting rod is fixedly connected with a bottom of the lifting air duct.

[0009] Preferably, a plurality of air outlet rows are equidistantly arranged at a bottom end of the isolation baffle.

[0010] Preferably, the air supply mechanism comprises a filtering fan and an air pipe arranged in the main body shell, an output end of the filtering fan is in communication with an input end of the air pipe, two output ends of the air pipe extend into the lifting air duct, a part of the air pipe located in the lifting air duct is a vertically arranged corrugated pipe, the output end of the air pipe is fixedly communicated with a connecting piece, the connecting piece is fixedly installed in the lifting air duct, and the connecting piece is sleeved and communicated on the shaft body of the isolation baffle.

[0011] Preferably, the driving mechanism comprises a cylindrical gear rack vertically and movably installed in the lifting air duct, a spring combination rod is movably installed in the cylindrical gear rack, a top end of the spring combination rod extends upward into the fixed air duct and is fixedly connected with the fixed air duct, springs at a bottom end of the spring combination rod are in a compressed state in an initial state, a clockwork gear is movably sleeved on an outer periphery of the shaft body of the isolation baffle, a clockwork part on the clockwork gear is fixedly connected with the shaft body of the isolation baffle, and a gear part of the clockwork gear is engaged with the cylindrical gear rack.

[0012] Preferably, a counterweight movably arranged in the lifting air duct is also symmetrically fixedly connected to the rotating shaft of the isolation baffle.

[0013] A rubber ring is also sleeved on a terminal end of the rotating shaft of the lifting air duct, and an outer periphery of the rubber ring can be in contact with an inner wall of the connecting piece.

[0014] Preferably, a guide wheel is movably installed at a bottom of the main body shell, and an upper surface of the isolation baffle can be in contact with the guide wheel when the isolation baffle moves upward.

[0015] Preferably, the driving mechanism can also be replaced by a direct-current speed reduction motor, and the direct-current speed reduction motor is installed in the lifting air duct so that an output end thereof is in transmission connection with the shaft body of the isolation baffle.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The scheme drives the lifting air duct to descend by running the lifting mechanism, the cylindrical rack is followed by the spring combination rod bottom elastic force to descend synchronously with the lifting air duct, when the cylindrical rack cannot descend due to the limiting of the spring combination rod, the lifting air duct continues to descend, at this time, the clockwork gear moves along the cylindrical rack, so that the clockwork gear rotates and the clockwork on the clockwork gear stores power, when the isolation baffle is separated from the fixed air duct, the spring combination rod bottom end supports the cylindrical rack to keep the relative height unchanged and locks the clockwork gear, at this time, the elastic force of the clockwork part on the clockwork gear drives the isolation baffle to rotate and fold upwards, in the process of extracting oil fume by the device, the air supply mechanism can synchronously run to pump clean gas into the isolation baffle, and the gas is sprayed out through the exhaust port two and the exhaust port one, so that the air curtain is formed on the side of the isolation baffle facing the oil fume, thereby avoiding the condition that a large amount of oil fume dispersed instantaneously is attached to the bottom of the main body shell to form oil dirt;

[0018] The scheme drives the counterweight to rotate synchronously when the isolation baffle rotates, so that the elastic force required by the clockwork on the clockwork gear is reduced, and the setting of the rubber ring slows down the elastic force provided by the clockwork part on the clockwork gear to drive the isolation baffle to rotate quickly, and avoids the impact of the isolation baffle during the unfolding process. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a front view perspective view of the present application;

[0021] Figure 3 It is a schematic diagram of the side view structure of the isolation box of the present application;

[0022] Figure 4 It is a schematic diagram of the structure of the lifting air duct of the present application;

[0023] Figure 5 It is a schematic diagram of the side view structure of the lifting air duct of the present application;

[0024] Figure 6 It is Figure 5 the enlarged view of A;

[0025] Figure 7 It is a schematic diagram of the structure of the air supply mechanism of the present application;

[0026] Figure 8 It is a schematic diagram of the structure of the isolation baffle of the present application;

[0027] Figure 9 It is a schematic diagram of the structure of the driving mechanism of the present application;

[0028] Figure 10This is a side view of the lifting isolation air duct of the present invention when it is lowered.

[0029] In the diagram: 1. Main body shell; 11. Fixed air duct; 12. Fan system; 13. Guide wheel; 2. Lifting and isolating air duct; 21. Lifting air duct; 22. Isolation baffle; 221. Exhaust port one; 222. Counterweight; 223. Rubber ring; 23. Drive mechanism; 231. Cylindrical rack; 232. Spring combination rod; 233. Clockwork gear; 24. Exhaust port two; 3. Air supply mechanism; 31. Filter fan; 32. Air duct; 33. Connector; 4. Lifting mechanism; 41. Lead screw motor; 42. Slider; 43. Connecting rod. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1 to 10 As shown, the present invention provides a lifting range hood with isolation function, including a main body shell 1 and a fan system 12 installed therein. The main body shell 1 is also provided with a fixed air duct 11 connected to the input end of the fan system 12. It also includes: a lifting isolation air duct 2, which is disposed in the fixed air duct 11; and a lifting mechanism 4, which is installed in the fixed air duct 11 for driving the lifting isolation air duct 2 downward.

[0032] The lifting isolation air duct 2 includes a lifting air duct 21 that is movably installed in the fixed air duct 11. The top end 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 drive 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 has ribs on its inner side, and several exhaust ports 24 that communicate with the cavity of the isolation baffle 22 are opened on the ribs of the isolation baffle 22.

[0033] The drive mechanism 23 includes a cylindrical rack 231 vertically movably installed in the lifting air duct 21. A spring combination rod 232 is movably installed inside the cylindrical rack 231. The top end of the spring combination rod 232 extends upward into 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 part on the spring gear 233 is fixedly connected to the shaft of the isolation baffle 22, and the gear part of the spring gear 233 meshes with the cylindrical rack 231.

[0034] The main body shell 1 is also provided with an air supply mechanism 3 for pumping gas into the isolation baffle 22;

[0035] The lifting mechanism 4 includes a lead screw motor 41 fixedly installed in the fixed air duct 11. A slider 42 is sleeved on the lead screw part of the lead screw motor 41. A connecting rod 43 is symmetrically fixed to the bottom end of the slider 42. The bottom of the connecting rod 43 is fixedly connected to the bottom of the lifting air duct 21.

[0036] Using the above scheme, the lifting mechanism 4 drives the lifting duct 21 downward, causing the cylindrical rack 231 to follow the lifting duct 21 downward synchronously due to the elastic force at the bottom of the spring combination rod 232. When the cylindrical rack 231 is limited by the spring combination rod 232 and cannot descend further, the lifting duct 21 continues to descend. At this time, the spring gear 233 will move along the cylindrical rack 231, thereby causing the spring gear 233 to rotate and store power in its spring. When the isolation baffle 22 disengages from the fixed duct 11, the bottom end of the spring combination rod 232 supports the cylindrical rack 231. The rack 231 maintains a constant relative height and locks the spring gear 233. At this time, under the elastic force of the spring part on the spring gear 233, the isolation baffle 22 will rotate and fold upward. During the process of the device extracting oil fumes, the air supply mechanism 3 can operate synchronously to pump clean gas into the isolation baffle 22 and make the gas spray out through the exhaust port 24 and the exhaust port 221, thereby forming an air curtain on the side of the isolation baffle 22 facing the oil fume, thus avoiding the situation where a large amount of oil fumes that are released instantly will adhere to the bottom of the main body shell 1 and form oil stains.

[0037] Furthermore, the drive mechanism 23 can also be replaced by a DC geared motor. The DC geared motor is installed in the lifting air duct 21 so that its output end is connected to the shaft of the isolation baffle 22. Compared with the mechanical structure, its structure is simpler, but its reliability is slightly worse than that of the mechanical structure.

[0038] It is worth noting that the spring force at the bottom of the counterweight 222 must be greater than the spring force of the spring on the rubber ring 223. This is to prevent the rubber ring 223 from rotating and causing the exhaust port 221 to move after the spring on the rubber ring 223 is compressed.

[0039] like Figure 7 As shown, the bottom end of the isolation baffle 22 is provided with several exhaust vents 221 at equal intervals;

[0040] By adopting the above solution, an exhaust vent 221 is set at the bottom of the isolation baffle 22. When the isolation baffle 22 is folded up and opened, the gas can still be discharged through the exhaust vent 221, thereby forming a gas barrier at the bottom of the main body shell 1, that is, the part not covered by the isolation baffle 22. This further reduces the situation where the overflowing oil fumes will blow to the bottom of the main body shell 1 and cause oil stains to accumulate, thus reducing the frequency of cleaning required by the user.

[0041] like Figures 2-5 and Figures 7-9 As shown, the air supply mechanism 3 includes a filter fan 31 and an air duct 32 disposed 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. The part 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. The connector 33 is fixedly installed in the lifting air duct 21. The connector 33 is sleeved on the shaft of the isolation baffle 22.

[0042] With the above solution, when the lifting air duct 21 descends, the corrugated part of the air duct 32 located inside the lifting air duct 21 will extend. And when the isolation baffle 22 rotates, the connector 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.

[0043] like Figure 8 and Figure 9 As shown, counterweights 222 that can move within the lifting air duct 21 are also symmetrically fixed to the rotation axis of the isolation baffle 22.

[0044] A rubber ring 223 is also fitted at 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 connector 33.

[0045] By adopting the above solution, the counterweight 222 is rotated synchronously when the isolation baffle 22 rotates, thereby reducing the elastic force required by the spring on the spring gear 233. At the same time, the setting of the rubber ring 223 reduces the situation where the spring part on the spring gear 233 provides elastic force to drive the isolation baffle 22 to rotate rapidly, thus avoiding the situation where the isolation baffle 22 will be impacted during the unfolding process.

[0046] like Figure 2 and Figure 3 As shown, a guide wheel 13 is also movably installed at the bottom of the main body shell 1, and the upper surface of the isolation baffle 22 can contact the guide wheel 13 when it moves upward;

[0047] With the above solution, by setting the guide wheel 13, when the lifting air duct 21 drives the isolation baffle 22 to move upward, the guide wheel 13 will abut against the upper surface of the isolation baffle 22, so as to prevent the outer wall of the isolation baffle 22 from being scratched by the main body shell 1, and at the same time reduce the friction between the main body shell 1 and the isolation baffle 22.

[0048] Working principle and usage process of this invention:

[0049] During the downward movement of the lifting duct 21 driven by the lifting mechanism 4, the cylindrical rack 231 is subjected to the elastic force at the bottom of the spring combination rod 232 and moves synchronously downward 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 spring gear 233 moves along the cylindrical rack 231, causing the spring gear 233 to rotate and its spring to store power. When the isolation baffle 22 disengages from the fixed duct 11, the bottom end of the spring combination rod 232 supports the cylindrical rack. The bar 231 maintains a constant relative height and locks the spring gear 233. At this time, under the elastic force of the spring part on the spring gear 233, the isolation baffle 22 will rotate and fold upward. During the process of the device extracting oil fumes, the air supply mechanism 3 can operate synchronously to pump clean gas into the isolation baffle 22 and make the gas spray out through the exhaust port 24 and the exhaust port 221, thereby forming an air curtain on the side of the isolation baffle 22 facing the oil fume, thus avoiding the situation where a large amount of oil fumes emitted at one time will adhere to the bottom of the main body shell 1 and form oil stains.

[0050] When the isolation baffle 22 rotates, the counterweight 222 set on it will also rotate synchronously, thereby reducing the elastic force required by the spring on the spring gear 233. At the same time, the setting of the rubber ring 223 reduces the situation where the spring part on the spring gear 233 provides elastic force to drive the isolation baffle 22 to rotate rapidly, thus avoiding the isolation baffle 22 from impacting during the unfolding process.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liftable range hood with isolation function, comprising a main body shell (1) and a fan system (12) installed therein, wherein the main body shell (1) is further provided with a fixed air duct (11) communicating with the input end of the fan system (12), characterized in that, Also includes: A lifting isolation air duct (2) is installed in a fixed air duct (11); The lifting mechanism (4) is installed in the fixed air duct (11) 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 end 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 drive 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) has a rib on its inward side, and several exhaust ports (24) connected to the cavity of the isolation baffle (22) are opened on the rib part 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); The drive mechanism (23) includes a cylindrical rack (231) vertically movably installed in the lifting air duct (21). A spring combination rod (232) is movably installed inside the cylindrical rack (231). The top end of the spring combination rod (232) extends upward into 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 part on the spring gear (233) is fixedly connected to the shaft of the isolation baffle (22), and the gear part of the spring gear (233) meshes with the cylindrical rack (231).

2. The lifting range hood with isolation function according to claim 1, characterized in that: The lifting mechanism (4) includes a lead screw motor (41) fixedly installed in the fixed air duct (11). A slider (42) is sleeved on the lead screw part of the lead screw motor (41). A connecting rod (43) is symmetrically fixed to the bottom end of the slider (42). 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 several exhaust vents (221) at equal intervals.

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

5. The lifting range hood with isolation function according to claim 1, characterized in that: The isolation baffle (22) is also symmetrically fixed to the rotation axis of the baffle (22), and a counterweight (222) that can move in the lifting air duct (21) is also fixedly connected. The end of the rotating shaft of the lifting air duct (21) is also fitted with a rubber ring (223), and the outer periphery of the rubber ring (223) can also contact the inner wall of the connector (33).

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

7. The lifting range hood with isolation function according to claim 1, characterized in that: The drive mechanism (23) can also be replaced by a DC geared 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).

Images