Air intake module, oil fume purification device and integrated stove

Abstract

The present invention belongs to the field of household appliances, and discloses an air intake module, an oil fume purification device, and an integrated stove, wherein the air intake module comprises: a plurality of sleeve units, which sequentially form a retractable sleeve from bottom to top; a plurality of air guide frames, which are fixedly arranged around the outer peripheral wall of the sleeve unit, and the plurality of air guide frames correspond one by one to the plurality of sleeve units from bottom to top, and the outer contours are successively reduced; wherein the air intake module can switch between an expanded state and a retracted state through the telescopic activities of the plurality of sleeve units, and in the expanded state, the plurality of air guide frames whose outer contours are successively reduced are sequentially spaced from bottom to top, and an air inlet is formed in the spaced area, and in the retracted state, the plurality of air guide frames are vertically aligned and sequentially connected in the horizontal direction to close the air inlet. In the present invention, the air intake module can reduce the dispersion of oil fume to improve the smoking efficiency, thereby effectively improving the smoking effect.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an air intake module, a fume purification device and an integrated stove. Background Art

[0002] Most of the existing integrated stoves have the function of absorbing oil smoke. Some of them, due to factors such as space or decoration style, will set the smoke outlet in the stove and set its top surface flush with the stove surface. However, since the smoke outlet is much lower than the cooking utensils next to it, the oil smoke that originally flows upward will be absorbed downward, and the oil smoke will be dispersed more, resulting in less than ideal oil smoke absorption effect. Summary of the invention

[0003] In view of the above-mentioned defects or shortcomings of the prior art, the present invention provides an air intake module, an oil fume purification device and an integrated stove, which can reduce the dispersion of oil fume to improve the smoking efficiency, thereby effectively improving the smoking effect.

[0004] To achieve the above object, the present invention provides an air inlet module in a first aspect, comprising:

[0005] Multiple sleeve units form a retractable and movable sleeve in sequence from bottom to top;

[0006] A plurality of air guide frames, the air guide frames are fixedly arranged around the outer peripheral wall of the sleeve unit, the plurality of air guide frames correspond to the plurality of sleeve units from bottom to top one by one and the outer contours decrease sequentially;

[0007] Among them, the air inlet module can switch between an expanded state and a retracted state through the telescopic activity of a plurality of the sleeve units. In the expanded state, a plurality of the air guide frames having successively reduced outer contours are spaced in sequence from bottom to top and air inlets are formed in the spaced areas. In the retracted state, the plurality of the air guide frames are vertically aligned and laterally docked in sequence to close the air inlets.

[0008] Optionally, the sleeve unit includes an upper sleeve unit located at the top and a plurality of lower sleeve units located below the upper sleeve unit, and the air guide frame includes a central air guide frame and a plurality of peripheral air guide frames, the central air guide frame extends laterally outward from the outer peripheral wall of the upper sleeve unit, and the peripheral air guide frame is arranged laterally spaced from the outer peripheral wall of the corresponding lower sleeve unit.

[0009] Optionally, the air inlet module also includes a plurality of connecting arms, the lateral ends of the connecting arms respectively connecting the outer air guide frame and the lower sleeve unit; on the same lower sleeve unit, the plurality of connecting arms are arranged in sequence along the circumferential direction, and a ventilation area is formed between adjacent connecting arms.

[0010] Optionally, a telescopic limiting structure is formed between the mutually nested sleeve units, and the telescopic limiting structure is configured to limit each of the sleeve units from moving upward in the expanded state to keep the sleeve units nested in pairs.

[0011] Optionally, the telescopic limiting structure includes a sleeve buckle formed on the peripheral wall of the sleeve unit. In the expanded state, the sleeve units that are sleeved with each other form a buckle connection through their respective sleeve buckles.

[0012] Optionally, the air intake module further comprises an elastic pressing mechanism, and the elastic pressing mechanism is configured to drive the air intake module to switch between a retracted state and an extended state by forming an elastic pressing action.

[0013] Optionally, the elastic pressing mechanism includes:

[0014] A rotation switching assembly is fixedly arranged in the lowermost sleeve unit in the vertical direction and can pivot around the central axis of the sleeve unit, and a locking slot and a vertical slide slot are formed on the peripheral wall of the rotation switching assembly and are arranged at intervals in the circumferential direction, and the locking slot is located below the vertical slide slot;

[0015] A key sleeve, fixedly arranged in the uppermost sleeve unit and elastically pressably sleeved on the rotation switching assembly, a key driving part is formed on the peripheral wall of the key sleeve;

[0016] During the process of pressing the button sleeve downward, the rotation switching assembly can pivot so that the button driving part is locked in the locking slot to maintain the air intake module in the retracted state, or the rotation switching assembly can pivot so that the button driving part is locked in the vertical slide slot to switch the air intake module to the expanded state.

[0017] Optionally, the rotation switching assembly includes a rotation guide and a rotation switching member fixedly connected to the top of the rotation guide, the locking slot and the vertical slide groove are formed on the peripheral wall of the rotation switching member, and the peripheral wall of the rotation guide is formed with a guide member slide groove. In the process of pressing the key sleeve downward, the key driving part can be pressed against the guide member slide groove to push the rotation guide to pivot, and the guide member slide groove can guide the key driving part to move into the locking slot or the vertical slide groove.

[0018] Optionally, a sleeve embedding hole which penetrates vertically is formed on the bottom wall of the sleeve unit located at the bottom, and the rotation guide member can be pivotally embedded in the sleeve embedding hole. The rotation switching assembly also includes an end positioning member located below the sleeve embedding hole, and the rotation exchange member, the rotation guide member and the end positioning member are fixedly connected in sequence along the vertical direction.

[0019] Optionally, a manual pressing portion for manual pressing is formed at the top end of the button sleeve, and the manual pressing portion extends out of the top end surface of the uppermost sleeve unit.

[0020] A second aspect of the present invention provides an oil fume purification device, which includes the above-mentioned air intake module.

[0021] A third aspect of the present invention provides an integrated stove, which includes a stove top and the above-mentioned oil fume purification device located below the stove top, the stove top is provided with a module mounting groove which penetrates vertically, and the lowest air guide frame is fixedly installed in the module mounting groove.

[0022] Optionally, in the retracted state, the top surfaces of the plurality of air guide frames are vertically flush with the top surface of the stove.

[0023] In the present invention, the air inlet module can switch between an extended state and a retracted state through the telescopic activities of multiple sleeve units. When the air inlet module is used to absorb oil smoke and is in an extended state, the air inlet is lifted to reduce the height difference with the cooking utensil, so that the oil smoke in the cooking utensil can flow into the air inlet without turning downward significantly, reducing the dispersion of oil smoke to improve the efficiency of smoking, thereby effectively improving the smoking effect. In addition, when the air inlet module is in a retracted state, since the air inlet is closed, it can prevent external pollutants from entering its interior, thereby reducing its internal pollution and extending its service life.

[0024] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 is a schematic diagram of an air inlet module in a specific embodiment of the present invention, in which the air inlet module is in a retracted state;

[0027] Figure 2 is another schematic diagram of an air intake module in a specific embodiment of the present invention, in which the air intake module is in an unfolded state;

[0028] Figure 3 for Figure 2 A cross-sectional view of the air inlet module in FIG.

[0029] Figure 4 Schematic diagram of the elastic pressing mechanism in a specific embodiment of the present invention, in which the button driving part is locked in the locking slot;

[0030] Figure 5 is another schematic diagram of the elastic pressing mechanism in a specific embodiment of the present invention, in which the button driving portion is located in the vertical slide groove;

[0031] Figure 6 is a partial schematic diagram of an integrated stove in a specific embodiment of the present invention, in which the air inlet module is in a retracted state;

[0032] Figure 7 This is another partial schematic diagram of the integrated stove in a specific embodiment of the present invention, and the air inlet module in the figure is in an unfolded state.

[0033] Description of reference numerals:

[0034] 1 Upper sleeve unit 2 First lower sleeve unit

[0035] 3 Second lower sleeve unit 4 Third lower sleeve unit

[0036] 5 Sleeve buckle 6 Center air guide frame

[0037] 7 First peripheral air guide frame 8 Second peripheral air guide frame

[0038] 9 Third peripheral air guide frame 10 Connecting arm

[0039] 11 Button sleeve 12 Spring

[0040] 13 Rotary displacement element 14 Rotary guide element

[0041] 15 End positioning piece 16 Cooktop

[0042] 11a Button drive unit 11b Manual pressing unit

[0043] 13a Locking slot 13b Vertical slide slot

[0044] 14a Guide slot DETAILED DESCRIPTION

[0045] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0047] In the embodiments of the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used to describe the relative positional relationship of components with respect to the directions shown in the drawings or in the vertical, perpendicular or gravity directions.

[0048] The present invention will be described in detail below in conjunction with exemplary embodiments with reference to the accompanying drawings.

[0049] like Figures 1 to 5 As shown, the first exemplary embodiment of the present invention provides an air intake module, which includes a plurality of sleeve units and a plurality of air guide frames. Among them, the plurality of sleeve units form a retractable sleeve connection in sequence from bottom to top, that is, the adjacent sleeve units are mutually sleeved and can be relatively displaced vertically, so that the air intake module can switch between the expanded state and the retracted state through the telescopic activity of the plurality of sleeve units. It should be noted that in order to ensure that the air intake module can stably switch between the expanded state and the retracted state, even if relative displacement occurs, the adjacent sleeve units should always remain mutually sleeved and will not disengage. In addition, the air guide frame is fixedly arranged around the outer peripheral wall of the sleeve unit so as to be able to move synchronously with the sleeve unit, and the plurality of air guide frames correspond one by one to the plurality of sleeve units that form a retractable sleeve connection in sequence from bottom to top, that is, a wind guide frame is fixedly arranged on the outside of each sleeve unit, and the outer contours of the plurality of wind guide frames arranged in sequence from bottom to top are reduced in sequence. Furthermore, the wind guide frame can be arranged in different shapes, such as a circular frame or a polygonal frame.

[0050] When the sleeve units located above are all moved upward to their respective highest points relative to the sleeve units located below, the air inlet module can be switched to the extended state, at which time multiple air guide frames with successively reduced outer contours are sequentially spaced from bottom to top and air inlets are formed in the spaced areas. When the air inlet module is used to absorb oil smoke, negative pressure can be formed at the air inlet to absorb external oil smoke. When the sleeve units located above are all moved downward to their respective lowest points relative to the sleeve units located below, the air inlet module can be switched to the retracted state, at which time multiple air guide frames are vertically aligned and sequentially docked in the horizontal direction to close the air inlet.

[0051] It can be seen that the lifting and lowering and opening and closing of the air inlet can be linked by the telescopic activities of multiple sleeve units to simultaneously drive the corresponding air guide frames to move vertically. In the process of switching to the expanded state, it is equivalent to lifting the air inlet while opening it. When the air inlet module is installed on the stove of the integrated stove, the height difference between the air inlet and the cooking utensils on the side can be reduced, so that the oil smoke in the cooking utensils can flow into the air inlet without turning downward significantly, reducing the dispersion of oil smoke to improve the smoking efficiency, thereby effectively improving the smoking effect. In addition, in the process of switching to the retracted state, it is equivalent to closing the air inlet while descending, which can prevent external pollutants (such as vegetable juice and food overflowing during cooking) from entering the interior of the air inlet module, thereby reducing its internal pollution and extending its service life.

[0052] In one embodiment, the sleeve unit includes an upper sleeve unit 1 located at the top and a plurality of lower sleeve units located below the upper sleeve unit 1. For example, referring to the accompanying drawings, the lower sleeve unit may include a first lower sleeve unit 2, a second lower sleeve unit 3, and a third lower sleeve unit 4 that are sequentially sleeved from top to bottom. The air guide frame includes a central air guide frame 6 and a plurality of peripheral air guide frames, wherein the central air guide frame 6 extends outwardly from the outer peripheral wall of the upper sleeve unit 1, and the peripheral air guide frames are arranged laterally spaced from the outer peripheral wall of the corresponding lower sleeve unit. For example, continuing to refer to the accompanying drawings, the peripheral air guide frame may include a first peripheral air guide frame 7, a second peripheral air guide frame 8, and a third peripheral air guide frame 9 that correspond to the first lower sleeve unit 2, the second lower sleeve unit 3, and the third lower sleeve unit 4 in sequence. The first peripheral air guide frame 7 is laterally spaced from the first lower sleeve unit 2 , the second peripheral air guide frame 8 is laterally spaced from the second lower sleeve unit 3 , and the third peripheral air guide frame 9 is laterally spaced from the third lower sleeve unit 4 .

[0053] When the air inlet module is Figure 1 In the retracted state shown, the central air guide frame 6, the first peripheral air guide frame 7, the second peripheral air guide frame 8 and the third peripheral air guide frame 9 are aligned vertically and connected in sequence in the horizontal direction to close the air inlet. Figure 2 In the unfolded state shown, the central air guide frame 6, the first peripheral air guide frame 7, the second peripheral air guide frame 8 and the third peripheral air guide frame 9 are sequentially spaced from top to bottom to open the air inlet.

[0054] In one embodiment, in order to facilitate the airflow inside the air intake module, a plurality of connecting arms 10 may be provided in the air intake module. The lateral ends of the connecting arms 10 are respectively connected to the peripheral air guide frame and the lower sleeve unit, and on the same lower sleeve unit, a plurality of connecting arms 10 are sequentially arranged at intervals along the circumferential direction so that a ventilation area is formed between adjacent connecting arms 10. Under this structure, the external airflow flowing into the air inlet can flow downward through the ventilation area between the plurality of connecting arms 10, thereby increasing the internal airflow flow rate, which is conducive to improving the air intake efficiency.

[0055] According to the above, in order to ensure that the air inlet module can stably switch between the deployed state and the retracted state, even if relative displacement occurs, the adjacent sleeve units should always remain mutually nested and will not disengage. Therefore, in order to improve the connection reliability, in one embodiment, a telescopic limiting structure can be formed between the mutually nested sleeve units, and the telescopic limiting structure is configured to: in the deployed state, limit each sleeve unit to move upward to maintain mutual nesting. In other words, in the deployed state, each sleeve unit has moved upward to its respective highest point position, at which time the telescopic limiting structure can limit each sleeve unit to continue to move upward, thereby ensuring that the adjacent sleeve units remain mutually nested and will not disengage.

[0056] In one embodiment, the telescopic limiting structure includes a sleeve buckle 5 formed on the peripheral wall of the sleeve unit (only the sleeve buckle 5 at the bottom end of the first lower sleeve unit 2 and the top end of the second lower sleeve unit 3 are marked in the accompanying drawings for explanation). In the expanded state, the sleeve units that are socketed with each other form a buckle connection through their respective sleeve buckles 5.

[0057] For example, for the air intake module in the illustrated embodiment, the bottom end of the upper sleeve unit 1, the top and bottom ends of the first lower sleeve unit 2, the top and bottom ends of the second lower sleeve unit 3, and the top end of the third lower sleeve unit 4 are all provided with sleeve buckles 5, so that in the unfolded state, the bottom end of the upper sleeve unit 1 forms a buckle connection with the top end of the first lower sleeve unit 2, the bottom end of the first lower sleeve unit 2 forms a buckle connection with the top end of the second lower sleeve unit 3, and the bottom end of the second lower sleeve unit 3 forms a buckle connection with the top end of the third lower sleeve unit 4.

[0058] Of course, in some other embodiments, the effect of preventing adjacent sleeve units from being separated from each other can also be achieved by omitting the telescopic limiting structure. For example, the sleeve unit can be set to a non-straight cylindrical structure, in which case the outer contour size of the peripheral wall of the sleeve unit changes vertically, and in the unfolded state, the adjacent sleeve units can be closely attached to each other through their respective peripheral walls to generate static friction, so that the limiting sleeve unit continues to move upward to achieve the effect of preventing separation.

[0059] In one embodiment, the air intake module further includes an elastic pressing mechanism, which is configured to drive the air intake module to switch between a retracted state and an extended state by forming an elastic pressing action. In other words, when the elastic pressing mechanism is manually controlled to form an elastic pressing action, the air intake module can be switched from the retracted state to the extended state or from the extended state to the retracted state.

[0060] In one embodiment, the elastic pressing mechanism includes a rotation switching component and a key sleeve 11. The rotation switching component is fixedly arranged in the sleeve cavity of the sleeve unit located at the bottom in the vertical direction and can pivot around the central axis of the sleeve unit. Usually, the sleeve unit located at the bottom remains fixed, and the rotation switching component does not move vertically, but only pivots around the central axis of the sleeve unit. In addition, the peripheral wall of the rotation switching component is formed with a locking groove 13a and a vertical slide groove 13b arranged at intervals along the circumference, and the locking groove 13a is located below the vertical slide groove 13b. The key sleeve 11 is fixedly arranged in the sleeve cavity of the sleeve unit located at the top and can be elastically pressed to be sleeved on the rotation switching component (for example, the key sleeve 11 and the rotation switching component can be elastically connected by a spring 12), and the peripheral wall of the key sleeve 11 is formed with a key driving part 11a.

[0061] When the button sleeve 11 is pressed downward, the rotation switch assembly can pivot to make the button driving part 11a snap into the locking slot 13a to maintain the air intake module in the retracted state. Alternatively, the rotation switch assembly can pivot to make the button driving part 11a fall into the vertical slide slot 13b, so that the button driving part 11a can slide upward in the vertical slide slot 13b to switch the air intake module to the extended state.

[0062] For example, in the illustrated embodiment, it is first assumed that the air inlet module is initially in a retracted state, at which time the air inlet is closed, and the button drive unit 11a is locked in the locking slot 13a to lock the retracted state. If it is to be switched to the extended state at this time, the button sleeve 11 can be pressed downward to drive the button drive unit 11a downward to disengage from the locking slot 13a, and at the same time, the rotation switching assembly pivots so that the button drive unit 11a falls into the vertical slide slot 13b. Then, the pressing force applied to the button sleeve 11 is removed. Since the button sleeve 11 is elastically connected to the rotation switching assembly, the button sleeve 11 moves upward to reset under the action of the rebound force. At this time, the button drive unit 11a can slide upward in the vertical slide slot 13b without limiting the movement of the button sleeve 11. During the upward movement of the button sleeve 11, the button sleeve 11 sequentially drives the upper sleeve unit 1, the first lower sleeve unit 2 and the second lower sleeve unit 3 to move upward to their respective highest points (the third lower sleeve unit 4 is usually fixed), thereby switching the air inlet module to the expanded state to open the air inlet.

[0063] When it is necessary to switch the air inlet module from the deployed state to the retracted state, the button sleeve 11 can be pressed downward to drive the button driving part 11a to slide downward in the vertical slide groove 13b. When the button driving part 11a moves down to disengage from the vertical slide groove 13b, the rotation switching assembly pivots to make the button driving part 11a re-engage in the locking slot 13a, and then the pressing force is removed. At this time, the button sleeve 11 cannot move upward, that is, it cannot drive the upper sleeve unit 1, the first lower sleeve unit 2 and the second lower sleeve unit 3 to move upward in sequence, thereby locking the air inlet module in the retracted state.

[0064] In one embodiment, the rotation switching assembly may include a rotation guide 14 and a rotation transposition member 13 fixedly connected to the top of the rotation guide 14, that is, the rotation guide 14 and the rotation transposition member 13 can be synchronously and co-rotated. At this time, the locking slot 13a and the vertical slide slot 13b are formed on the peripheral wall of the rotation transposition member 13, and the peripheral wall of the rotation guide 14 is formed with a guide member slide slot 14a.

[0065] Based on the above structure, in the process of pressing the key sleeve 11 downward, the key driving part 11a can press against the guide member slot 14a to push the rotating guide member 14 to pivot, and the guide member slot 14a can guide the key driving part 11a to move into the locking slot 13a or the vertical slot 13b.

[0066] In other words, in this embodiment, the rotation of the rotary switching component can be controlled by manually pressing the button sleeve 11 without setting up an additional pivot control mechanism. Therefore, the structure of the elastic pressing mechanism can be greatly simplified, which is conducive to reducing production difficulty and saving space and cost, etc., and can simplify the user's control actions, thereby improving the user experience.

[0067] In one embodiment, a sleeve embedding hole that penetrates vertically is formed on the bottom wall of the sleeve unit located at the bottom, and the rotation guide member 14 can be pivotally embedded in the sleeve embedding hole. In addition, the rotation switching assembly also includes an end positioning member 15 located below the sleeve embedding hole. At this time, the rotation transposition member 13, the rotation guide member 14 and the end positioning member 15 are vertically fixedly connected in sequence to vertically fix the rotation switching assembly in the sleeve cavity of the sleeve unit located at the bottom. For example, in the illustrated embodiment, the bottom wall of the third lower sleeve unit 4 is provided with the above-mentioned sleeve embedding hole. Based on the above-mentioned structure, the rotation switching assembly can be vertically fixed in the sleeve cavity of the third lower sleeve unit 4.

[0068] In one embodiment, in order to facilitate the user to identify the manual pressing position of the elastic pressing mechanism, the top end of the button sleeve 11 can be formed as a manual pressing portion 11b, which extends out of the top end surface of the uppermost sleeve unit (for example, the upper sleeve unit 1), thereby reminding the user that the state switching of the air intake module can be controlled by manually pressing the manual pressing portion 11b.

[0069] It should be noted that the above-mentioned multiple embodiments of manually controlling the state switching of the air inlet module through the elastic pressing mechanism are only used to explain the concept of the present invention. In some other embodiments, the state switching of the air inlet module can of course be controlled by other methods. The present invention does not limit the specific control method, but different control methods should also be within the scope of the concept of the present invention.

[0070] The second exemplary embodiment of the present invention provides an oil fume purification device using the above-mentioned air intake module. Obviously, the oil fume purification device has all the technical effects brought by the above-mentioned air intake module due to the use of the above-mentioned air intake module, which will not be repeated here. However, it should be noted that the air intake module in the first exemplary embodiment of the present invention can also be used in other types of air purification devices, not just limited to oil fume purification devices.

[0071] like Figure 6 and Figure 7 As shown, the third exemplary embodiment of the present invention provides an integrated stove, which includes a stove 16 and the above-mentioned oil fume purification device located below the stove 16. The stove 16 is provided with a module installation slot that penetrates vertically, and the air guide frame located at the bottom of the air intake module is fixedly installed in the module installation slot, so that the air intake module is fixed to the stove 16 as a whole. Similar to the above, due to the use of the oil fume purification device in the second exemplary embodiment of the present invention, the integrated stove in this exemplary embodiment has all the technical effects brought by it, so it will not be repeated.

[0072] In one embodiment, when the air intake module is in the retracted state, the top surfaces of the plurality of air guide frames are vertically flush with the top surface of the stove 16. When the air intake module is in the extended state, the air inlet is open and the height difference with the cooking utensils next to it is small, which can effectively improve the smoking effect.

[0073] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical scheme of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

[0074] It should also be noted that the various specific technical features described in the above specific implementation methods can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will no longer separately describe various possible combinations.

[0075] In addition, various implementations of the embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed in the embodiments of the present invention.

Claims

1. An air inlet module, characterized in that: The air inlet module comprises: Multiple sleeve units form a retractable and movable sleeve in sequence from bottom to top; A plurality of air guide frames, the air guide frames are fixedly arranged around the outer peripheral wall of the sleeve unit, the plurality of air guide frames correspond to the plurality of sleeve units from bottom to top one by one and the outer contours decrease sequentially; In which, the air inlet module can switch between the expanded state and the retracted state through the telescopic activity of the multiple sleeve units. In the expanded state, the multiple air guide frames with successively decreasing outer contours are sequentially spaced from bottom to top and air inlets are formed in the interval areas. In the retracted state, the multiple air guide frames are vertically aligned and sequentially connected in the horizontal direction to close the air inlets. A telescopic limiting structure is formed between the mutually nested sleeve units, and the telescopic limiting structure is configured to: in the expanded state, limit each of the sleeve units to move upward to keep them nested with each other; the air inlet module also includes an elastic pressing mechanism, and the elastic pressing mechanism is configured to: be able to drive the air inlet module to switch between the retracted state and the expanded state by forming an elastic pressing action.

2. The air inlet module according to claim 1, characterized in that: The sleeve unit comprises an upper sleeve unit (1) located at the top and a plurality of lower sleeve units located below the upper sleeve unit (1); the air guide frame comprises a central air guide frame (6) and a plurality of peripheral air guide frames; the central air guide frame (6) extends outwardly from the peripheral wall of the upper sleeve unit (1) in a transverse direction, and the peripheral air guide frames are arranged at a transverse interval from the peripheral wall of the corresponding lower sleeve unit.

3. The air inlet module according to claim 2, characterized in that: The air intake module further comprises a plurality of connecting arms (10), the lateral ends of the connecting arms (10) respectively connecting the peripheral air guide frame and the lower sleeve unit; on the same lower sleeve unit, the plurality of connecting arms (10) are sequentially spaced along the circumferential direction, and a ventilation area is formed between adjacent connecting arms (10).

4. The air inlet module according to claim 1, characterized in that: The telescopic limiting structure comprises a sleeve buckle (5) formed on the peripheral wall of the sleeve unit. In the unfolded state, the sleeve units that are sleeved together form a buckle connection through their respective sleeve buckles (5).

5. The air inlet module according to claim 1, characterized in that: The elastic pressing mechanism comprises: A rotation switching assembly is fixedly arranged in the lowermost sleeve unit in the vertical direction and can pivot around the central axis of the sleeve unit, and a locking slot (13a) and a vertical slide slot (13b) are formed on a peripheral wall of the rotation switching assembly and are arranged at intervals in the circumferential direction, and the locking slot (13a) is located below the vertical slide slot (13b); A key sleeve (11) is fixedly arranged in the uppermost sleeve unit and can be elastically pressed and sleeved on the rotation switching component, and a key driving part (11a) is formed on the peripheral wall of the key sleeve (11); During the process of pressing the button sleeve (11) downward, the rotation switching assembly can pivot to enable the button driving portion (11a) to be locked in the locking slot (13a) to maintain the air intake module in the retracted state, or the rotation switching assembly can pivot to enable the button driving portion (11a) to fall into the vertical sliding slot (13b) to switch the air intake module to the extended state.

6. The air inlet module according to claim 5, characterized in that: The rotary switching assembly comprises a rotary guide member (14) and a rotary position changing member (13) fixedly connected to the top of the rotary guide member (14); the locking slot (13a) and the vertical slide slot (13b) are formed on the peripheral wall of the rotary position changing member (13); the peripheral wall of the rotary guide member (14) is formed with a guide member slide slot (14a); in the process of pressing the key sleeve (11) downward, the key driving part (11a) can press against the guide member slide slot (14a) to push the rotary guide member (14) to pivot, and the guide member slide slot (14a) can guide the key driving part (11a) to move into the locking slot (13a) or the vertical slide slot (13b).

7. The air inlet module according to claim 6, characterized in that: A sleeve embedding hole is formed on the bottom wall of the sleeve unit located at the bottom, which penetrates vertically. The rotary guide member (14) can be pivotally embedded in the sleeve embedding hole. The rotary switching assembly also includes an end positioning member (15) located below the sleeve embedding hole. The rotary position changing member (13), the rotary guide member (14) and the end positioning member (15) are fixedly connected in sequence vertically.

8. The air inlet module according to claim 5, characterized in that: A manual pressing portion (11b) for manual pressing is formed at the top end of the button sleeve (11), and the manual pressing portion (11b) extends out of the top end surface of the uppermost sleeve unit.

9. A fume purification device, characterized in that: The oil fume purification device comprises an air intake module according to any one of claims 1 to 8.

10. An integrated stove, characterized in that: The integrated stove comprises a stove top (16) and a According to the oil fume purification device according to claim 9, the stove (16) is provided with a module installation groove which penetrates vertically, and the lowermost air guide frame is fixedly installed in the module installation groove.

11. The integrated stove according to claim 10, characterized in that: In the retracted state, the top surfaces of the plurality of air guide frames are vertically flush with the top surface of the stove (16).

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