A range hood

Abstract

The present application relates to a kind of range hood, comprising: shell, with first air inlet and air outlet;Fan, be arranged in shell;Sub-shell, be arranged at the bottom of shell, with the inside of shell is communicated, with the first state of being stretched out from shell and the second state of being retracted in shell, second air inlet is formed on sub-shell, when sub-shell is in the first state, second air inlet is exposed.Oil smoke is small, sub-shell can be in the second state, first air inlet can carry out oil suction operation, avoid excessive occupation space.Oil smoke is large, sub-shell can be in the first state, stretch out and be closer to stove, so as to improve the oil suction effect of range hood, more timely and fully absorb oil smoke.Therefore, the range hood of the present application can draw close the distance between the air inlet of range hood and stove and pot when oil smoke is large, can timely and fully absorb oil smoke, also not to excessive occupation cooking space.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, specifically to a range hood. Background Technology

[0002] Cooking often produces fumes, which can harm people's health. Those frequently exposed to cooking fumes are more likely to be obese and suffer from respiratory diseases. Therefore, range hoods have become essential kitchen appliances. Generally, the lower the range hood is positioned, the more effectively it can remove the fumes generated during cooking, preventing them from spreading. However, when the range hood is positioned low, it takes up more cooking space and increases the risk of bumping one's head. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of existing range hoods that occupy cooking space and are easy to bump one's head when they are close to the stove, so as to provide a range hood that can not only remove the oil fumes generated during cooking in time, but also does not occupy cooking space.

[0004] To address the aforementioned problems, the present invention provides a range hood, comprising: a housing having a first air inlet and an air outlet; a fan disposed within the housing; and a sub-housing disposed at the bottom of the housing and communicating with the interior of the housing, having a first state extending downward from the housing and a second state retracted into the housing, wherein a second air inlet is formed on the sub-housing, and the second air inlet is exposed when the sub-housing is in the first state.

[0005] Furthermore, the range hood also includes a first linear drive mechanism fixedly mounted on the inner wall of the housing. The output shaft of the first linear drive mechanism is connected to the sub-housing and is adapted to drive the sub-housing to extend or retract from the housing.

[0006] Furthermore, the range hood also includes a cover plate disposed on the sub-casing and adapted to cover the second air inlet, the cover plate having a third state of exposing the second air inlet and a fourth state of covering the second air inlet.

[0007] Furthermore, the second air inlet is located on the front side of the sub-casing, and the cover plate is hinged to the side wall of the second air inlet. The range hood also includes:

[0008] The first rotation source is fixedly mounted on the inner wall of the sub-shell;

[0009] The push rod, driven by the first rotational source, is capable of lifting or releasing the cover plate.

[0010] Furthermore, the first rotation source is connected to the push rod via a transmission assembly, which includes:

[0011] The driving gear is mounted on the output shaft of the rotation source;

[0012] The driven gear meshes with the driving gear;

[0013] The rotating shaft has one end fixedly connected to the driven gear on the same axis, and the push rod is fixedly mounted on the rotating shaft.

[0014] Furthermore, the range hood also includes a locking assembly suitable for locking the cover in a third state.

[0015] Furthermore, the locking component includes:

[0016] The driven wheel is coaxially fixedly connected to the other end of the rotating shaft, and a stop notch is provided on the peripheral wall of the driven wheel;

[0017] The elastic pressing member is located below the driven wheel. When the cover plate is in the third state, the elastic pressing member can extend into the stop notch and circumferentially lock the driven wheel.

[0018] Furthermore, the resilient pressing element includes:

[0019] The base is fixedly mounted on the inner wall of the sub-shell.

[0020] A locking head is located above the base and has a locking protrusion adapted to extend into the stop notch.

[0021] An elastic element is positioned between the base and the locking head;

[0022] The first magnetic component is located on the locking head;

[0023] The first electromagnet is mounted on the base and located between the base and the locking head. When the first electromagnet is energized, it repels the first magnetic component.

[0024] Furthermore, the range hood also includes a storage structure located at the bottom of the housing, which has a storage state extending from the bottom of the housing and a retracted storage state inside the housing.

[0025] Furthermore, the storage structure includes:

[0026] The cover is retractably mounted on the housing;

[0027] The lid arm is hinged to the end of the lid housing away from the housing, and has a horizontal state suitable for placing the pot lid and a vertical state suitable for storing it inside the lid housing.

[0028] Furthermore, the lid is provided with a clamping assembly, which is suitable for clamping the lid.

[0029] Furthermore, the cover arm is provided with a receiving groove.

[0030] Furthermore, the range hood also includes a second linear drive mechanism, the main body of which is fixedly connected to one of the output shafts of the second linear drive mechanism and fixedly connected to the sub-housing structure.

[0031] Furthermore, the range hood also includes a second linear drive mechanism, the main body of which is fixedly connected to one of the output shafts of the housing, and the other is fixedly connected to the storage structure.

[0032] Furthermore, the storage structure also includes a folding component adapted to switch the cover arm to a folded state and / or a pushing component adapted to switch the cover arm to a storage state.

[0033] Furthermore, the collapse component includes:

[0034] The second rotation source is fixedly connected to the side wall of the cover shell;

[0035] The pull rope has one end connected to the cover arm and the other end connected to the output shaft of the second rotation source. When the cover arm is in a folded state, the height of the second rotation source is higher than the connection point between the pull rope and the cover arm.

[0036] Furthermore, the driving components include:

[0037] The second electromagnet is disposed on one of the cover shell and the cover arm;

[0038] The second magnetic component is disposed on another part of the cover housing and the cover arm and corresponds to the electromagnet.

[0039] The present invention has the following advantages:

[0040] As can be seen from the above technical solution, the range hood of the present invention adds a downwardly extending sub-shell to the outer casing, and adds a second air inlet to the sub-shell. This allows the sub-shell to be in a second state, retracted into the outer casing, when the amount of oil fumes is small, so that the first air inlet can perform oil suction operation, avoiding excessive space occupation. When the amount of oil fumes is large, the sub-shell can switch to the first state, extending downward and closer to the stove, thereby improving the oil suction effect of the range hood, absorbing oil fumes more promptly and fully, and preventing oil fumes from harming the user's health. Therefore, when the amount of oil fumes is large, the range hood of the present invention can use the sub-shell to shorten the distance between the air inlet of the range hood and the stove and pot, which can absorb oil fumes promptly and fully without excessively occupying cooking space. Attached Figure Description

[0041] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 The range hood of Embodiment 1 of the present invention is shown, in which the sub-shell is in the first state;

[0043] Figure 2 The present invention shows a range hood according to Embodiment 1 of the present invention, in which the sub-shell is in the first state and the storage structure is in the storage state;

[0044] Figure 3 This is a side view of the range hood according to Embodiment 1 of the present invention, with the cover plate in a third state;

[0045] Figure 4 The transmission assembly and locking assembly of the range hood according to Embodiment 1 of the present invention are shown;

[0046] Figure 5 In the locking component of the range hood of Embodiment 1 of the present invention, the stop notch is separated from the locking protrusion.

[0047] Figure 6 The locking component of the range hood in Embodiment 1 of the present invention is such that the stop notch engages with the locking protrusion.

[0048] Figure 7 This is a side view of the cover plate and push rod of the range hood according to Embodiment 1 of the present invention;

[0049] Figure 8 This is a side view of the range hood according to Embodiment 1 of the present invention, in which the storage structure is in a stowed state;

[0050] Figure 9 This is a side view of the range hood according to Embodiment 1 of the present invention, in which the storage structure is in the storage state;

[0051] Figure 10 for Figure 9 The side view of the range hood shows the cover arm of the storage structure in a horizontal position.

[0052] Figure 11 The sub-shell and storage structure of the range hood in Embodiment 1 of the present invention;

[0053] Figure 12 for Figure 11 Enlarged view of the second linear drive mechanism in the diagram;

[0054] Figure 13The sub-shell and storage structure of the range hood in Embodiment 2 of the present invention;

[0055] Figure 14 for Figure 13 Enlarged view of the second linear drive mechanism of Zhongfa;

[0056] Figure 15 The storage structure and collapsible assembly of Embodiment 1 of the present invention are shown;

[0057] Figure 16 The present invention illustrates the storage structure, the stowage component, and the pushing component of Embodiment 1.

[0058] Figure 17 This is an enlarged view of the collapsible component of Embodiment 1 of the present invention;

[0059] Figure 18 This is a perspective view of the range hood according to Embodiment 1 of the present invention.

[0060] Explanation of reference numerals in the attached figures:

[0061] 100. Range hood; 1. Housing; 11. First air inlet; 12. Air outlet; 13. Air inlet grille; 14. Oil cup; 15. Volute; 2. Fan; 3. Sub-housing; 31. Second air inlet; 4. First linear drive mechanism; 5. Cover plate; 61. First rotation source; 62. Push rod; 611. Connecting section; 612. Pushing section; 63. Driven gear; 64. Driven gear; 65. Rotating shaft; 66. Driven wheel; 661. Stop notch; 67. Elastic top pressing component 671. Base; 672. Locking head; 672a. Locking protrusion; 673. Elastic element; 674. First magnetic element; 675. First electromagnet; 7. Storage structure; 71. Cover shell; 72. Cover arm; 721. Stop protrusion; 73. Clamping assembly; 8. Second linear drive mechanism; 91. Retraction assembly; 911. Second rotation source; 912. Pull rope; 913. Rope collecting shaft; 92. Pushing assembly; 921. Second electromagnet; 922. Second magnetic element. Detailed Implementation

[0062] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0063] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0066] Example 1

[0067] Figure 1 The following is an illustration of a range hood according to Embodiment 1 of the present invention, in which the sub-shell is in the first state. Figure 2 The present invention illustrates a range hood according to Embodiment 1 of the present invention, wherein the sub-shell is in the first state and the storage structure is in the storage state. Figure 18 This is a perspective view of the range hood according to Embodiment 1 of the present invention. Figure 1 , Figure 2 and Figure 18As shown, the present invention relates to a range hood 100, including a housing 1, a fan 2, and a sub-housing 3. The housing 1 has a first air inlet 11 and an air outlet 12. The fan 2 is disposed within the housing 1. The sub-housing 3 is disposed at the bottom of the housing 1 and communicates with the interior of the housing 1. The sub-housing has a first state extending downwards from the housing 1 and a second state retracted into the housing 1. A second air inlet 31 is formed on the sub-housing 3, and when the sub-housing 3 is in the first state, the second air inlet 31 is exposed. Specifically, a motor is disposed within a volute 15, which has an air inlet and a bottom opening. The air inlet of the volute 15 communicates with the first air inlet 11, the bottom opening communicates with the second air inlet 31, and the air outlet 12 of the volute 15 communicates with the air outlet 12 of the housing 1. In other embodiments, the volute 15 may also be configured as an inclined structure with its air inlet facing between the first air inlet 11 and the second air inlet 31. Preferably, an air intake grille 13 is also provided in front of the first air inlet 11. The air intake grille 13 allows air carrying fumes to pass through while preventing the user's hands from being inserted into the air inlet and causing injury. At the same time, a filter screen is preferably provided behind the first air inlet 11 and the second air inlet 31 to filter grease. An oil cup 14 is provided below the first air inlet 11. Grease will flow obliquely into the oil cup 14 along the casing 1 of the range hood 100.

[0068] As can be seen from the above technical solution, the range hood 100 of the present invention adds a downwardly extending sub-shell 3 to the housing 1, and adds a second air inlet 31 to the sub-shell 3. This allows the sub-shell 3 to be in a second state retracted into the housing 1 when the oil fumes are light, so that the first air inlet 11 can perform oil suction operation and avoid occupying too much space. When the oil fumes are heavy, the sub-shell 3 can switch to the first state, extending downward and closer to the stove, thereby improving the oil suction effect of the range hood 100, absorbing the oil fumes more promptly and fully, and avoiding the oil fumes from harming the user's health. Therefore, when the oil fumes are heavy, the range hood 100 of the present invention can use the sub-shell 3 to bring the distance between the air inlet of the range hood 100 and the stove and pot closer, so as to absorb the oil fumes promptly and fully without occupying too much cooking space.

[0069] In this embodiment, the sub-shell 3 can be manually pulled out or retracted by the user, or it can automatically switch between a first state and a second state. For example, in this embodiment, the range hood 100 also includes a first linear drive mechanism 4 fixedly disposed on the inner wall of the shell 1. The output shaft of the first linear drive mechanism 4 is connected to the sub-shell 3 and is adapted to drive the sub-shell 3 to extend or retract from the shell 1. The first linear drive device can be a device capable of outputting linear motion, such as a hydraulic cylinder, a pneumatic cylinder, an electric cylinder, or a combination of a motor and a rack and pinion.

[0070] In this embodiment, the range hood 100 preferably further includes a cover plate 5 disposed on the sub-casing 3 and adapted to cover the second air inlet 31. For example... Figure 3 As shown, the cover 5 has a third state in which the second air inlet 31 is exposed and a fourth state in which the second air inlet 31 is covered. The cover 5 is preferably, but not limited to, a glass plate, which can improve the aesthetics of the range hood 100 and prevent dust from adhering to the filter screen at the second air inlet 31, thus reducing the burden on the user to clean the filter screen. Preferably, an openable and closable cover 5 is also provided on the first air outlet 12.

[0071] The cover 5 can be manually switched between a third and a fourth state by the user, or it can automatically switch between the third and a fourth state. For example, in this embodiment, the second air inlet 31 is located on the front side of the sub-shell 3, which can more smoothly absorb the oil fumes generated during the cooking process. Figure 4 As shown, the cover plate 5 is hinged to the side wall of the second air inlet 31. The range hood 100 also includes a first rotation source 61 and a push rod 62. The first rotation source 61 is fixedly mounted on the inner wall of the sub-housing 3. The push rod 62 is driven by the first rotation source 61 and can lift or release the cover plate 5. The first rotation source 61 can be a device capable of outputting rotation, such as a motor, engine, hydraulic motor, or a combination of one of these with a reducer. Specifically, in this embodiment, as... Figure 7 As shown, the push rod 62 includes a connecting section 611 for connecting to the first rotation source 61, and a pushing section 612 disposed perpendicularly to the cover plate 5. The pushing section 612 can convert the rotation output by the first rotation source 61 into a thrust perpendicular to the cover plate 5. In other embodiments, the push rod 62 may also be a straight rod or a cam sleeved on the output shaft of the first rotation source 61. The push rod 62 may be configured to be connected to or separated from the cover plate 5. When the second air inlet 31 is disposed at the bottom end of the sub-housing 3, the push rod 62 is preferably configured to be separated from the cover plate 5.

[0072] Preferably, the rotation source is connected to the push rod 62 via a transmission assembly. The transmission assembly includes a driving gear 63, a driven gear 64, and a rotating shaft 65. The driving gear 63 is mounted on the output shaft of the first rotation source 61. The driven gear 64 meshes with the driving gear 63. One end of the rotating shaft 65 is coaxially fixedly connected to the driven gear 64, and the push rod 62 is fixedly mounted on the rotating shaft 65. The transmission output from the first rotation source 61 can be transmitted to the driven gear 64 via the driving gear 63, and the rotating shaft 65 drives the push rod 62 to push the cover plate 5. Multiple push rods 62 can be mounted on the rotating shaft 65, allowing one first rotation source 61 to simultaneously drive multiple push rods 62 to push the cover plate 5, avoiding stress concentration in the cover plate 5 due to insufficient force application points, which could cause deformation or even breakage. The connection method between the driving gear 63 and the driven gear 64 can also be a belt connection or a chain connection. Preferably, the driving gear 63 and the driven gear 64 are hinged to the inner wall of the sub-housing 3 via the first bracket and the second bracket, respectively, and are located at both ends of the cover plate 5. This facilitates the push rod 62 to push the cover plate 5 from the middle. Preferably, a motor support plate is also provided on the inner wall of the sub-housing 3, and the first rotation source 61 is fixedly connected to the sub-housing 3 via the motor support plate.

[0073] In this embodiment, the range hood 100 also includes a locking assembly suitable for locking the cover plate 5 in a third state. The locking assembly, together with the first rotation source 61, provides a thrust to lock the cover plate 5 in the third state when it is in the third state, thereby reducing the force on the output shaft of the first rotation source 61 and helping to extend the service life of the first rotation source 61. The locking assembly is preferably, but not limited to, a snap-fit, magnetic element, spring, elastic flap, or elastic plunger, etc. For example, in this embodiment, the locking assembly includes a driven wheel 66 and an elastic pressing element 67. The driven wheel 66 is coaxially fixedly connected to the other end of the rotating shaft 65. Figure 5 and Figure 6 As shown, the driven wheel 66 has a stop notch 661 on its peripheral wall. An elastic pressing member 67 is located below the driven wheel 66. When the cover plate 5 is in the third state, the elastic pressing member 67 can extend into the stop notch 661 and circumferentially lock the driven wheel 66. When the first rotation source 61 reverses, the driven wheel 66 can be driven by the first rotation source 61 to rotate circumferentially, thereby causing the elastic pressing member 67 to be misaligned from the stop notch 661. The locking assembly releases the circumferential lock on the driven wheel 66, thus allowing the cover plate 5 to switch to the fourth state under the action of the gravity assembly.

[0074] Preferably, in this embodiment, the elastic pressing member 67 can be selected as a spring, elastic plug, or spring, etc. Preferably, the elastic pressing member 67 includes a base 671, a locking head 672, an elastic member 673, a first magnetic member 674, and a first electromagnet 675. The base 671 is fixedly disposed on the inner wall of the sub-housing 3. The locking head 672 is disposed above the base 671. The locking head 672 has a locking protrusion 672a suitable for extending into the stop notch 661. The elastic member 673 is disposed between the base 671 and the locking head 672. The first magnetic member 674 is disposed on the locking head 672. The first electromagnet 675 is disposed on the base 671 and located between the base 671 and the locking head 672; when the first electromagnet 675 is energized, it repels the first magnetic member 674. Specifically, when the cover plate 5 switches from the fourth state to the third state, the first rotation source 61 drives the push rod 62 to lift the cover plate 5. At the same time, the transmission assembly drives the driven wheel 66 to rotate, causing the locking head 672 to extend into the stop notch 661. At this time, the first electromagnet 675 is energized and repels the first magnetic element 674, so that the first magnetic element 674 carries the locking head 672 and presses it against the stop notch, thereby increasing the locking force of the locking assembly on the cover plate 5. When the cover plate 5 switches from the third state to the fourth state, the first rotation source 61 can reverse, and the first electromagnet 675 can be de-energized. The locking head 672 and the first magnetic element 674 lose their upward repulsive force and can compress the elastic element 673 by its own gravity, so that the elastic pressing element 67 can smoothly separate from the driven wheel 66, allowing the cover plate 5 to smoothly switch to the fourth state.

[0075] In this embodiment, the range hood 100 further includes a storage structure 7 disposed at the bottom of the housing 1. The storage structure 7 has a storage state (piece) extending from the bottom of the housing 1. Figure 9 ) and the retracted storage state inside the housing 1 (see Figure 8 When the storage structure 7 is in the storage state, it can be used to store cookware such as pots, lids, slotted spoons, or cutting boards. The storage structure 7 preferably includes, but is not limited to, a cantilever and hooks provided on the cantilever to hook the cookware, or a storage box to hold the cookware. For example, in this embodiment, the storage structure 7 is mainly used to store pot lids during cooking, and it includes a lid cover 71 and a lid arm 72. The lid cover 71 is telescopically mounted on the housing 1. The lid arm 72 is hinged to the end of the lid cover 71 away from the housing 1, having a horizontal state suitable for placing the pot lid and a vertical state stored within the lid cover 71. To stably restrict the lid arm 72 to the horizontal state, the lid arm 72 and the lid cover 71 can optionally be provided with mutually matching elastic pressing members 67 and receiving grooves, or hooks and slots that can engage with each other when the lid arm 72 is in the horizontal state, such as... Figure 10As shown, in this embodiment, the cover arm 72 is provided with a stop protrusion 721. When the cover arm 72 rotates around the bottom of the cover arm 72 shell to a horizontal state, the stop protrusion 721 on the cover arm 72 can abut against the bottom wall of the cover arm 72 shell, thereby preventing the cover arm 72 from continuing to rotate and restricting the cover arm 72 to a horizontal state.

[0076] Preferably, the lid holder 71 is provided with a clamping assembly 73. The clamping assembly 73 is suitable for clamping the lid, which makes the lid holder structure more stable in storing the lid. The lid holder arm 72 may also be provided with a receiving groove. The receiving groove can prevent the lid from slipping off the lid holder arm 72.

[0077] The storage structure 7 can be manually pulled out or pushed back by the user during use, or it can be automatically extended or retracted. Preferably, such as Figure 11 and Figure 12 As shown, in this embodiment, the range hood 100 further includes a second linear drive mechanism 8. One of the main body and output shaft of the second linear drive mechanism 8 is fixedly connected to the sub-housing 3. The other is fixedly connected to the storage structure 7. At this time, the storage structure 7 can move downwards along with the sub-housing 3 when the sub-housing 3 moves downwards, or move downwards independently when the sub-housing 3 does not need to move downwards. The first linear drive device can be selected as a device capable of outputting linear motion, such as a hydraulic cylinder, pneumatic cylinder, electric cylinder, or a combination of a motor and rack and pinion, etc.

[0078] like Figure 15 , 16 As shown in Figure 17, in this embodiment, the storage structure 7 further includes a retractable assembly 91 adapted to switch the cover arm 72 to a folded state and / or a pushing assembly 92 adapted to switch the cover arm 72 to a storage state. Preferably, the retractable assembly includes a second rotation source 911 and a pull cord 912. The second rotation source 911 is fixedly connected to the side wall of the cover housing 71. One end of the pull cord 912 is connected to the cover arm 72, and the other end is connected to the output shaft of the second rotation source 911. When the cover arm 72 is in the folded state, the height of the second rotation source 911 is higher than the connection point between the pull cord 912 and the cover arm 72. The second rotation source 911 can rotate, causing the pull cord 912 to be wound around the output shaft of the second rotation source 911, thereby carrying the connected item upwards and being stored in the cover housing 71. Preferably, a rope-collecting shaft 913 is sleeved on the output shaft of the second rotating source 911. The rope-collecting shaft 913 can increase the length of the rope when the second rotating source 911 rotates one revolution and avoid stress concentration on the output shaft. Preferably, the outer diameter of one side of the rope-collecting shaft 913 is larger to prevent the pull rope 912 from slipping off.

[0079] The pushing component 92 preferably includes a second electromagnet 921 and a second magnetic element 922. The second electromagnet 921 is disposed on one of the cover housing 71 and the cover arm 72. The second magnetic element 922 is disposed on the other of the cover housing 71 and the cover arm 72 and corresponds to the second magnetic element 922. When the cover arm 72 is in a vertical state, the second electromagnet 921 can be de-energized and not interact with the second magnetic element 922, or it can be energized and attracted to the second magnetic element 922, thereby reliably maintaining the cover arm 72 in a vertical state. When the cover arm 72 needs to be switched to a horizontal state, the second electromagnet 921 can be energized and repel the second magnetic element 922, thereby causing the cover arm 72 to separate from the cover housing 71. When the storage structure 7 is provided with a retracting component 91, the second rotation source 911 of the retracting component 91 can reverse and allow the cover arm 72 to rotate downwards and switch to a horizontal state. The second magnetic element 922 can be a magnet, a lodestone, or an electromagnet, etc. The second electromagnet 921 is preferably configured to be de-energized after a period of time (e.g., 1-5 seconds) to avoid the risk of electric shock to the user due to exposed wires.

[0080] Example 2

[0081] Example 2 relates to a range hood, such as Figure 13 and Figure 14 As shown, the difference from Embodiment 1 is that in this embodiment, the range hood 100 further includes a second linear drive mechanism 8. One of the main body and output shaft of the second linear drive mechanism 8 is fixedly connected to the inner wall of the housing 1, and the other is fixedly connected to the storage structure 7. At this time, the storage structure 7 and the sub-housing 3 are independent of each other.

[0082] In summary, the range hoods 100 of Embodiments 1 and 2 of the present invention can overcome the defects of the prior art where the range hood 100 occupies cooking space and is easy to bump one's head when it is close to the stove. They can not only remove the oil fumes generated during cooking in a timely manner, but also do not occupy cooking space, which helps to improve the user experience.

[0083] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A range hood, characterized in that, include: The housing (1) has a first air inlet (11) and an air outlet (12); A fan (2) is disposed inside the housing (1); Sub-shell (3), which is disposed at the bottom of the shell (1) and communicates with the interior of the shell (1), has a first state extending downward from the shell (1) and a second state retracted into the shell (1), and a second air inlet (31) is formed on the sub-shell (3). When the sub-shell (3) is in the first state, the second air inlet (31) is exposed. The range hood (100) further includes a cover plate (5) disposed on the sub-casing (3) and adapted to cover the second air inlet (31), the cover plate (5) having a third state of exposing the second air inlet (31) and a fourth state of covering the second air inlet (31); The second air inlet (31) is located on the front side of the sub-casing (3), and the cover plate (5) is hinged to the side wall of the second air inlet (31). The range hood (100) also includes: The first rotation source (61) is fixedly disposed on the inner wall of the sub-shell (3); A push rod (62), driven by the first rotation source (61), is capable of lifting or releasing the cover plate (5); It also includes a storage structure (7) disposed at the bottom of the housing (1), the storage structure (7) having a storage state extending from the bottom of the housing (1) and a storage state retracted into the housing (1); The range hood (100) also includes a second linear drive mechanism (8), one of the main body and output shaft of the second linear drive mechanism (8) is fixedly connected to the sub-housing (3), and the other is fixedly connected to the storage structure (7).

2. The range hood according to claim 1, characterized in that, The range hood (100) further includes a first linear drive mechanism (4) fixedly disposed on the inner wall of the housing (1). The output shaft of the first linear drive mechanism (4) is connected to the sub-housing (3) and is adapted to drive the sub-housing (3) to extend or retract from the housing (1).

3. The range hood according to claim 1, characterized in that, The first rotation source (61) is connected to the push rod (62) via a transmission assembly, the transmission assembly comprising: A drive gear (63) is sleeved on the output shaft of the rotation source; Driven gear (64) meshes with driving gear (63); A rotating shaft (65) is fixedly connected at one end to the driven gear (64) in a coaxial manner, and the push rod (62) is fixedly mounted on the rotating shaft (65).

4. The range hood according to claim 3, characterized in that, The range hood (100) also includes a locking component adapted to lock the cover (5) in the third state.

5. The range hood according to claim 4, characterized in that, The locking component includes: The driven wheel (66) is coaxially fixedly connected to the other end of the rotating shaft (65), and the driven wheel (66) has a stop notch (661) on its peripheral wall; An elastic pressing member (67) is disposed below the driven wheel (66). When the cover plate (5) is in the third state, the elastic pressing member (67) can extend into the stop notch (661) and circumferentially lock the driven wheel (66).

6. The range hood according to claim 5, characterized in that, The elastic pressing member (67) includes: The base (671) is fixedly mounted on the inner wall of the sub-shell (3); A locking head (672) is disposed above the base (671), and the locking head (672) has a locking protrusion (672a) adapted to extend into the stop notch (661); An elastic element (673) is disposed between the base (671) and the locking head (672); A first magnetic element (674) is disposed on the locking head (672); A first electromagnet (675) is disposed on the base (671) and located between the base (671) and the locking head (672). When the first electromagnet (675) is energized, it repels the first magnetic component (674).

7. The range hood according to claim 6, characterized in that, The storage structure (7) includes: A cover (71) is provided, which is retractably mounted on the housing (1); The lid arm (72) is hinged to the end of the lid shell (71) away from the housing (1) and has a horizontal state suitable for placing the pot lid and a vertical state housed in the lid shell (71).

8. The range hood according to claim 7, characterized in that, The lid shell (71) is provided with a clamping assembly (73), which is suitable for clamping the pot lid.

9. The range hood according to claim 7, characterized in that, The cover arm (72) is provided with a receiving groove.

10. The range hood according to claim 6, characterized in that, The range hood (100) also includes a second linear drive mechanism (8), one of the main body and output shaft of the second linear drive mechanism (8) is fixedly connected to the inner wall of the housing (1), and the other is fixedly connected to the storage structure (7).

11. The range hood according to claim 7, characterized in that, The storage structure (7) further includes a folding component (91) adapted to switch the cover arm (72) to a folded state and / or a pushing component (92) adapted to switch the cover arm (72) to a storage state.

12. The range hood according to claim 11, characterized in that, The collapsing component (91) includes: The second rotation source (911) is fixedly connected to the side wall of the cover shell (71); A pull cord (912) is connected at one end to the cover arm (72) and at the other end to the output shaft of the second rotation source (911). When the cover arm (72) is in a folded state, the height of the second rotation source (911) is higher than the connection point between the pull cord (912) and the cover arm (72).

13. The range hood according to claim 11, characterized in that, The actuation component (92) includes: A second electromagnet (921) is disposed on one of the cover housing (71) and the cover arm (72); A second magnetic element (922) is disposed on another of the cover housing (71) and the cover arm (72) and corresponds to the second electromagnet (921).

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