Island type range hood

Abstract

The invention belongs to the technical field of household appliances, and discloses a middle island type range hood. The island type range hood comprises a fan module, a smoke collecting module and an air duct module connected between the fan module and the smoke collecting module, the air duct module comprises a driving assembly and two sleeve assemblies arranged at intervals, each sleeve assembly comprises a first sleeve and a second sleeve which are in sliding fit, the first sleeve is connected with the fan module, and the second sleeve is connected with the smoke collecting module. The second sleeve is connected with the smoke collecting module; the first sleeve and the second sleeve jointly form a channel for communicating the fan module and the smoke collecting module; the driving assembly comprises a motor and a transmission mechanism, the transmission mechanism is connected to the output end of the motor, the output end of the transmission mechanism is connected with the second sleeves, and the motor can synchronously drive the two second sleeves to ascend and descend relative to the first sleeve through the transmission mechanism. According to the island type range hood, synchronous stretching and retracting of the double air ducts can be achieved through single power, the structure is simple, and cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, and in particular to a middle-island type range hood. BACKGROUND

[0002] The middle-island type range hood refers to a hanging type range hood suspended on the ceiling above a bar counter or an island counter, which is suspended in four directions and used to extract oil fume on the bar counter or the island counter. The existing middle-island type range hood usually comprises a fan module, a smoke collecting module and an air duct module connected between the fan module and the smoke collecting module. In the related art, for the setting of double telescopic air ducts, each telescopic air duct is usually driven and controlled by a set of driving assembly, that is, double power is usually adopted to realize the synchronous telescoping of the double air ducts. This setting structure is complex and has high cost.

[0003] Therefore, there is an urgent need to provide a middle-island type range hood to solve the above problems. SUMMARY

[0004] The present application aims to provide a middle-island type range hood, which realizes the synchronous telescoping of double air ducts by single power, has simple structure and saves cost.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] A middle-island type range hood, comprising a fan module, a smoke collecting module and an air duct module connected between the fan module and the smoke collecting module;

[0007] The air duct module comprises a driving assembly and two spaced sleeve assemblies, the sleeve assembly comprises a slidingly fitted first sleeve and a second sleeve, the first sleeve is connected with the fan module, and the second sleeve is connected with the smoke collecting module;

[0008] The first sleeve and the second sleeve jointly form a passage communicating the fan module and the smoke collecting module;

[0009] The driving assembly comprises a motor and a transmission mechanism, the transmission mechanism is connected to the output end of the motor, the output end of the transmission mechanism is connected with the second sleeve, and the motor can synchronously drive two second sleeves to lift or lower relative to the first sleeve through the transmission mechanism.

[0010] As an optional solution, the transmission mechanism comprises a transmission shaft and two push rod components corresponding to the sleeve assembly, the transmission shaft is connected to the output end of the motor through a speed reducer, the two push rod components are in transmission connection with the transmission shaft, the output end of the push rod component is connected with the second sleeve, and the motor can drive the two push rod components to synchronously extend and retract through the transmission shaft, so that the second sleeve is lifted relative to the first sleeve.

[0011] As an optional solution, the push rod component comprises a first gear, a second gear, a lead screw and a lifting sleeve rod, the first gear is sleeved on the transmission shaft, the second gear is perpendicular to the axis of the first gear and is in meshing connection, the lead screw is arranged in the second gear and rotates synchronously with the second gear, and the lifting sleeve rod is threadedly sleeved outside the lead screw and is connected with the second sleeve.

[0012] As an optional solution, the push rod component further comprises a first sleeve and a second sleeve in sliding fit, the first sleeve is connected with the fan module, the first gear, the second gear and the lead screw are located in the first sleeve, the end of the lifting sleeve rod is fixedly connected to the inner wall of the second sleeve, and the end of the second sleeve is fixedly connected to the inner wall of the second sleeve.

[0013] As an optional solution, the fan module comprises an auxiliary air bellow connected to the upper side of the sleeve assembly, two reinforcing seats are fixedly arranged in the auxiliary air bellow in opposite arrangement, a cross beam is connected between the two reinforcing seats, and the motor is fixed on the cross beam.

[0014] As an optional solution, the second sleeve is sleeved outside the first sleeve, the second sleeve comprises sheet metal pieces and a maintenance cover, the sheet metal pieces are in U shape, the openings of the two sheet metal pieces are arranged opposite to each other, and the maintenance cover is detachably connected to the openings of the sheet metal pieces; or

[0015] The second sleeve is sleeved outside the first sleeve, the second sleeve comprises sheet metal pieces and a glass panel, the sheet metal pieces are in U shape, the openings of the two sheet metal pieces are arranged away from each other, and the glass panel is detachably connected to the openings of the sheet metal pieces.

[0016] As an optional solution, the second sleeve further comprises a reinforcing piece, the reinforcing piece is located at the opening of the sheet metal piece and is connected between the inner walls of the opposite sides of the sheet metal piece.

[0017] As an optional solution, a sliding sealing piece is arranged between the bottom end of the first sleeve and the second sleeve.

[0018] As an alternative, the first sleeve is provided with fixed slide rails at all four corners, and the second sleeve is provided with sliding rails at all four corners, with the sliding rails slidingly engaging with the fixed slide rails.

[0019] As an optional solution, both the sliding rail and the fixed rail have L-shaped cross-sections.

[0020] As an optional solution, a wiring harness is also included, which is located within one of the sleeve assemblies and connects the fan module and the smoke collection module. A wire protection component is provided within the sleeve assembly, and the wiring harness is embedded within the wire protection component. One end of the wire protection component is fixedly installed, and the other end of the wire protection component can move up and down with the second sleeve.

[0021] As an optional solution, a lower cable guard box is also provided at the inner bottom of the second sleeve, through which the cable harness can pass into the smoke collection module.

[0022] The beneficial effects of this invention are:

[0023] This invention provides a central island range hood. During use, a motor drives two second sleeves to rise and fall synchronously relative to their respective first sleeves via a transmission mechanism, thus creating synchronous expansion and contraction of the dual air ducts. By controlling the expansion and contraction of the dual air ducts, the distance between the smoke collection module and the island counter can be changed. During cooking, the second sleeves can be lowered via a drive component to reduce the distance between the smoke collection module and the island counter, thereby reducing smoke escape and improving smoke extraction efficiency. After cooking, the second sleeves can be raised via a drive component to reduce the space occupied by the central island range hood. Therefore, the central island range hood provided in this embodiment can achieve synchronous expansion and contraction of the two sleeve components with a single motor, i.e., single-power synchronous expansion and contraction of the dual air ducts, resulting in a simple structure and cost savings. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the island-style range hood described in an embodiment of the present invention;

[0025] Figure 2 This is a structural schematic diagram of the air duct module described in an embodiment of the present invention;

[0026] Figure 3 This is an exploded view of the air duct module described in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram illustrating the cooperation between the air duct module and the auxiliary housing according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the drive component according to an embodiment of the present invention after the external sleeve is removed;

[0029] Figure 6 This is a schematic diagram of the structure of the driving component described in an embodiment of the present invention;

[0030] Figure 7 This is an exploded view of the second sleeve according to another embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the second sleeve with the maintenance cover removed, as described in an embodiment of the present invention.

[0032] In the picture:

[0033] 100. Ceiling and walls; 200. Suspended ceiling; 300. Island countertop; 400. Wiring harness;

[0034] 10. Fan module; 11. Auxiliary air box; 12. Expansion duct; 13. Fan housing;

[0035] 20. Air duct module; 21. Drive assembly; 211. Motor; 212. Drive shaft; 213. Push rod assembly; 2131. First gear; 2132. Second gear; 2133. Lead screw; 2134. Lifting sleeve; 2135. First sleeve; 2136. Second sleeve; 2137. Connector; 22. Sleeve assembly; 221. First sleeve; 222. Second sleeve; 2221. Sheet metal part; 2222. Maintenance cover; 2223. Glass panel; 2224. Reinforcing member; 2225. Hanging hole; 2226. Hook; 223. Fixed slide rail; 224. Sliding rail; 225. Sliding seal; 23. Reinforcing seat; 24. Crossbeam; 25. Cable protection component; 26. Lower cable protection box;

[0036] 30. Smoke collection module. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] like Figure 1 As shown, this embodiment provides a central island-style range hood, which includes a fan module 10, a duct module 20, and a smoke collection module 30 arranged vertically. The duct module 20 connects the fan module 10 and the smoke collection module 30. The fan module 10 is located above the ceiling 200 and is fixed to the ceiling wall 100 by multiple silent hangers. Because the fan module 10 is located above the ceiling 200 and far from the user, the ceiling 200 can isolate the noise generated during the operation of the fan module 10, reducing the impact of noise on the user and improving the user experience. The smoke collection module 30 is located on the upper side of the island 300 and has a smoke inlet for drawing out the cooking fumes above the island 300.

[0042] like Figure 1 As shown, the fan module 10 includes an auxiliary air box 11, a telescopic duct 12, and a fan housing 13 arranged horizontally in the left-right direction. The fan housing 13 includes a main body and a fan horizontally installed inside the main body. The telescopic duct 12 connects the auxiliary air box 11 and the main body, facilitating adjustment of the distance between the auxiliary air box 11 and the fan housing 13 to ensure compatibility with the installation environment. The upper end of the duct module 20 is connected to the auxiliary air box 11, and the lower end of the duct module 20 is connected to the smoke collection module 30. The fan can generate negative pressure, which allows the cooking fumes to pass sequentially through the smoke collection module 30, the duct module 20, the auxiliary air box 11, the telescopic duct 12, and the fan housing 13 before being discharged outdoors.

[0043] By setting up the auxiliary air box 11 and the telescopic pipe 12, the distance between the fan and the smoke collection module 30 can be extended, thereby increasing the sound propagation distance. When the sound wave propagates in the channel, the sound energy is absorbed and consumed by air friction and friction of the inner wall of the channel, which helps to attenuate the sound. The longer the channel, the more this friction loss, and the less sound is transmitted to the outside, which helps to reduce noise. At the same time, when the airflow flows in the long straight channel, there is more distance and time for the turbulent flow to develop into a more stable laminar flow. The more stable the airflow, the fewer eddies and pressure fluctuations are generated, reducing the noise generated by eddies, and therefore the noise is also lower. In addition, the fan is located inside the main body of the casing and does not occupy the space inside the auxiliary air box 11, making the air intake smoother.

[0044] like Figure 2 As shown, the air duct module 20 includes a drive assembly 21 and two sleeve assemblies 22 spaced apart in the left-right direction. The two sleeve assemblies 22 have identical structures, and each sleeve assembly 22 forms an air duct for the passage of cooking fumes. The spaced-apart dual air ducts reduce obstruction space and improve the user's visual experience and usability.

[0045] Specifically, in combination Figure 2 and Figure 3 The sleeve assembly 22 includes a first sleeve 221 and a second sleeve 222 that are nested and slidably fitted together. The first sleeve 221 is connected to the fan module 10, and the second sleeve 222 is connected to the smoke collection module 30. The first sleeve 221 and the second sleeve 222 together form a channel connecting the fan module 10 and the smoke collection module 30. Specifically, the bottom of the auxiliary air box 11 is provided with two connecting ports, and the upper end of each first sleeve 221 is connected to the corresponding connecting port of the auxiliary air box 11. The smoke collection chamber of the smoke collection module 30 is also provided with two connecting ports, and the lower end of each second sleeve 222 is connected to the corresponding connecting port of the smoke collection chamber. The drive assembly 21 includes a motor 211 and a transmission mechanism. The transmission mechanism is connected to the output end of the motor 211, and the output end of the transmission mechanism is connected to the second sleeve 222. The motor 211 can synchronously drive the two second sleeves 222 to rise and fall relative to the first sleeve 221 through the transmission mechanism.

[0046] In use, the motor 211 drives the two second sleeves 222 to rise and fall synchronously relative to their respective first sleeves 221 via a transmission mechanism, thereby forming synchronous expansion and contraction of the dual air ducts. By controlling the expansion and contraction of the dual air ducts, the distance between the smoke collection module 30 and the island 300 can be changed. During cooking, the second sleeves 222 can be lowered by the drive component 21 to reduce the distance between the smoke collection module 30 and the island 300, thereby reducing the escape of oil fumes and improving the smoke extraction effect. After cooking, the second sleeves 222 can be raised by the drive component 21 to reduce the space occupied by the island-style range hood. Therefore, the island-style range hood provided in this embodiment can achieve synchronous expansion and contraction of the two sleeve components 22 with one motor 211, that is, synchronous expansion and contraction of the dual air ducts with a single power source, which is simple in structure and saves costs.

[0047] Specifically, such as Figure 2 As shown, the transmission mechanism includes a transmission shaft 212 and two push rod components 213 corresponding to the sleeve assembly 22. The transmission shaft 212 is connected to the output end of the motor 211 through a reduction gear. Both push rod components 213 are connected to the transmission shaft 212. The output end of the push rod component 213 is connected to the second sleeve 222. The motor 211 can drive the two push rod components 213 to extend and retract synchronously through the transmission shaft 212, so that the second sleeve 222 rises and falls relative to the first sleeve 221.

[0048] In use, the motor 211 drives the transmission shaft 212 to rotate. The transmission shaft 212 is connected to two push rod components 213 to realize the extension and retraction of the output ends of the two push rod components 213. Since the output end of each push rod component 213 is connected to the corresponding second sleeve 222, it can drive the two second sleeves 222 to rise and fall synchronously relative to their respective first sleeves 221, thus forming the synchronous extension and retraction of the dual air ducts.

[0049] like Figure 2 As shown, in this embodiment, both the first sleeve 221 and the second sleeve 222 have square cross-sections. The second sleeve 222 is fitted over the first sleeve 221, and its lifting height can be selectively adjusted within 350mm. Of course, in other optional embodiments, the first sleeve 221 can also be fitted over the second sleeve 222; this is not specifically limited here. This embodiment uses the example of the second sleeve 222 being fitted over the first sleeve 221 for illustration.

[0050] In this embodiment, reference Figure 2The drive shaft 212 passes through the motor 211 in the left and right direction. The two ends of the drive shaft 212 are respectively connected to the top of the corresponding push rod component 213. The motor 211 is located between the two push rod components 213. The two push rod components 213 are respectively hidden inside the corresponding sleeve assembly 22. The motor 211 is hidden inside the auxiliary air box 11, which saves space and improves the aesthetics of the range hood.

[0051] Optionally, such as Figure 4 As shown, two reinforcing seats 23 are fixed inside the auxiliary air box 11, arranged opposite each other in the left-right direction. A crossbeam 24 connects the two reinforcing seats 23, and the motor 211 is fixed on the crossbeam 24. By setting the reinforcing seats 23 and the crossbeam 24, the connection strength can be strengthened and the stability of the lifting drive can be improved.

[0052] Optionally, such as Figure 5 As shown, each push rod component 213 includes a first gear 2131, a second gear 2132, a lead screw 2133, and a lifting sleeve 2134. The first gear 2131 is mounted on the transmission shaft 212 and rotates synchronously with the transmission shaft 212. The second gear 2132 is perpendicular to and meshes with the axis of the first gear 2131, that is, the axis of the first gear 2131 extends in the left-right direction, and the axis of the second gear 2132 extends in the up-down direction. The two can be selected to mesh with bevel teeth or helical teeth. The lead screw 2133 passes through the second gear 2132 and rotates synchronously with the second gear 2132, that is, the lead screw 2133 only rotates and does not move. The lifting sleeve 2134 is threaded onto the outside of the lead screw 2133 and is connected to the second sleeve 222. When motor 211 drives transmission shaft 212 to rotate, transmission shaft 212 drives first gear 2131 to rotate around its axis. First gear 2131 drives second gear 2132 to rotate around its axis. Second gear 2132 drives lead screw 2133 to rotate synchronously. Since lifting sleeve 2134 is threaded onto lead screw 2133, the rotation of lead screw 2133 can be converted into vertical movement of lifting sleeve 2134. Lifting sleeve 2134 simultaneously drives second sleeve 222 to move vertically. Therefore, by setting the above-mentioned push rod component 213, synchronous extension and retraction of two sleeve assemblies 22 can be achieved using one motor 211 and one transmission shaft 212, resulting in a simple structure and cost savings.

[0053] Optionally, such as Figure 6 As shown, the push rod component 213 also includes a first sleeve 2135 and a second sleeve 2136 that are slidably fitted. The first sleeve 2135 is connected to the fan module 10, specifically fixedly connected to the lower side of the crossbeam 24 inside the auxiliary air box 11. See also... Figure 5The first gear 2131, the second gear 2132, and the lead screw 2133 are all located inside the first sleeve 2135. The end of the lifting sleeve 2134 is fixedly connected to the inner wall of the second sleeve 2136, and the end of the second sleeve 2136 is fixedly connected to the inner wall of the second sleeve 222 via a connector 2137. When the lifting sleeve 2134 moves up and down, it can drive the second sleeve 2136 to move up and down, and the second sleeve 2136 drives the second sleeve 222 to move up and down. Through the first sleeve 2135 and the second sleeve 2136, the first gear 2131, the second gear 2132, the lead screw 2133, and the lifting sleeve 2134 can be hidden inside, which protects each component. Furthermore, the sliding cooperation between the first sleeve 2135 and the second sleeve 2136 drives the second sleeve 222 to rise and fall, resulting in higher structural strength and more stable sliding.

[0054] like Figure 6 As shown, in this embodiment, both the first sleeve 2135 and the second sleeve 2136 have square cross-sections, with the first sleeve 2135 fitted over the second sleeve 2136. Of course, in other alternative embodiments, the second sleeve 2136 may also be fitted over the first sleeve 2135; no specific limitation is made here. Smooth operation between the first sleeve 2135 and the second sleeve 2136 can be ensured by applying lubricant or using a sliding gap mechanism.

[0055] like Figure 3 As shown, the first sleeve 221 has fixed slide rails 223 at each of its four corners, and the second sleeve 222 has sliding rails 224 at each of its four corners. The sliding rails 224 are slidably engaged with the fixed slide rails 223. The engagement of the sliding rails 224 and the fixed slide rails 223 guides the lifting and lowering of the second sleeve 222, ensuring its smooth movement. Optionally, the sliding engagement between the fixed slide rails 223 and the sliding rails 224 is similar to that of a drawer slide, which will not be described further here.

[0056] Optionally, both the sliding rail 224 and the fixed rail 223 have L-shaped cross-sections. This configuration results in a larger contact area between the sliding rail 224 and the fixed rail 223, leading to more stable sliding guidance.

[0057] In an optional embodiment, such as Figure 3As shown, the second sleeve 222 includes a sheet metal part 2221 and a maintenance cover 2222. The sheet metal part 2221 is roughly U-shaped, and the openings of the two sheet metal parts 2221 are arranged opposite each other. The maintenance cover 2222 is detachably connected to the opening of the sheet metal part 2221. Both the sheet metal part 2221 and the maintenance cover 2222 are made of sheet metal VCM material. The maintenance cover 2222 is made by a flattening process. The openings of the sheet metal parts 2221 of the two second sleeves 222 are arranged opposite each other, so that the maintenance cover 2222 is located on the inside, ensuring that the three external surfaces of the sheet metal part 2221 are decorative surfaces, which facilitates cleaning and improves aesthetics.

[0058] Optionally, the maintenance cover 2222 has multiple hooks 2226 on the side facing the sheet metal part 2221, and the sheet metal part 2221 has multiple hanging holes 2225 on the open side. The multiple hanging holes 2225 are arranged one-to-one with the multiple hooks 2226. The maintenance cover 2222 is installed from top to bottom, so that the hooks 2226 can be inserted into the hanging holes 2225, realizing the detachable connection between the maintenance cover 2222 and the sheet metal part 2221. The disassembly and assembly are quick and the maintenance is convenient.

[0059] like Figure 3 As shown, in this embodiment, the maintenance cover 2222 has eight hooks 2226 on the side facing the sheet metal part 2221. The eight hooks 2226 are evenly distributed along the long edge of the maintenance cover 2222. Correspondingly, the sheet metal part 2221 has eight corresponding hanging holes 2225 to achieve a stable connection between the maintenance cover 2222 and the sheet metal part 2221. In other optional embodiments, the number of hooks 2226 and hanging holes 2225 can be adaptively selected according to actual needs, and no specific limitation is made here.

[0060] In another alternative embodiment, such as Figure 7 As shown, the second sleeve 222 may also include a sheet metal part 2221 and a glass panel 2223. The sheet metal part 2221 is roughly U-shaped, and the openings of the two sheet metal parts 2221 are arranged opposite to each other. The glass panel 2223 can be detachably connected to the opening of the sheet metal part 2221. The opposite arrangement of the openings of the sheet metal parts 2221 of the two second sleeves 222 allows the glass panel 2223 to be located on the outer side as a decorative surface, which also facilitates cleaning and improves aesthetics.

[0061] Optionally, such as Figure 3 As shown, the second sleeve 222 also includes a reinforcing member 2224, which is located at the opening of the sheet metal part 2221 and connected between the inner walls of opposite sides of the sheet metal part 2221. The reinforcing member 2224 increases the structural strength of the second sleeve 222 and prevents the opposite sides of the sheet metal part 2221 from expanding outwards, ensuring overall flatness and thus guaranteeing the stability of the second sleeve 222 during its lifting and lowering process.

[0062] Specifically, in this embodiment, the second sleeve 222 includes two reinforcing members 2224, which are spaced apart in the vertical direction, further ensuring the structural strength and flatness of the second sleeve 222. For example, Figure 8 As shown, the connector 2137 at the bottom of the second sleeve 2136 is fixedly connected to the lower reinforcing member 2224. It should be noted that the installation position of the two reinforcing members 2224 should ensure that after the second sleeve 222 rises to the set height, the upper reinforcing member 2224 does not interfere with the lower edge of the first sleeve 221.

[0063] Optionally, such as Figure 3 As shown, a sliding seal 225 is provided between the bottom end of the first sleeve 221 and the second sleeve 222. In this embodiment, the sliding seal 225 can be made of felt, which is fixed to the outer wall of the bottom end of the first sleeve 221 to achieve a circumferential seal between the first sleeve 221 and the second sleeve 222, preventing oil fume leakage. In addition, the connection between the top end of the first sleeve 221 and the auxiliary air box 11 can also be sealed using felt.

[0064] like Figure 3 As shown, the island-style range hood also includes a wiring harness 400, which is located within one of the sleeve assemblies 22 and connects the fan module 10 and the smoke collection module 30. That is, the wiring harness 400 extending from the fan module 10 needs to pass through one of the sleeve assemblies 22 to enter the smoke collection module 30 and connect to the control module. Therefore, as... Figure 8 As shown, the sleeve assembly 22 is provided with a wire protector 25, and the wire harness 400 is embedded in the wire protector 25. One end of the wire protector 25 is fixed, and the other end of the wire protector 25 can rise and fall with the second sleeve 222. In this embodiment, the wire protector 25 is specifically a cable chain, and part of the wire harness 400 is embedded in the cable chain. One end of the cable chain is fixed to the outer side of the top end of the first sleeve 2135, and the other end of the cable chain can be fixed on the sliding track 224. When the second sleeve 222 rises and falls, the other end of the cable chain can rise and fall with the second sleeve 222. The cable chain fixes the wire harness 400 to prevent the wire harness 400 from becoming tangled, and the wire harness 400 will not swing or become entangled when the second sleeve 222 rises and falls.

[0065] Furthermore, such as Figure 8 As shown, a lower cable guard box 26 is also provided at the bottom inner side of the second sleeve 222, through which the wire harness 400 can pass into the smoke collection module 30. The lower cable guard box 26 can be connected to the second sleeve 222 by a snap-fit. The lower cable guard box 26 can further provide a preset trajectory for the wire harness 400, avoiding the problem of the wire harness 400 being scattered and prone to swinging or tangling.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An island-style range hood, characterized in that, It includes a fan module (10), a smoke collection module (30), and a duct module (20) connecting the fan module (10) and the smoke collection module (30). The air duct module (20) includes a drive assembly (21) and two spaced-apart sleeve assemblies (22). The sleeve assembly (22) includes a first sleeve (221) and a second sleeve (222) that are slidably fitted. The first sleeve (221) is connected to the fan module (10), and the second sleeve (222) is connected to the smoke collection module (30). The first sleeve (221) and the second sleeve (222) together form a channel connecting the fan module (10) and the smoke collection module (30); The drive assembly (21) includes a motor (211) and a transmission mechanism. The transmission mechanism is connected to the output end of the motor (211) and the output end of the transmission mechanism is connected to the second sleeve (222). The motor (211) can synchronously drive the two second sleeves (222) to rise and fall relative to the first sleeve (221) through the transmission mechanism.

2. The island-style range hood according to claim 1, characterized in that, The transmission mechanism includes a transmission shaft (212) and two push rod components (213) corresponding to the sleeve assembly (22). The transmission shaft (212) is connected to the output end of the motor (211) through a reduction gear. Both push rod components (213) are connected to the transmission shaft (212). The output end of the push rod component (213) is connected to the second sleeve (222). The motor (211) can drive the two push rod components (213) to extend and retract synchronously through the transmission shaft (212) so that the second sleeve (222) rises and falls relative to the first sleeve (221).

3. The island-style range hood according to claim 2, characterized in that, The push rod component (213) includes a first gear (2131), a second gear (2132), a lead screw (2133), and a lifting sleeve (2134). The first gear (2131) is mounted on the transmission shaft (212). The second gear (2132) is perpendicular to and meshes with the axis of the first gear (2131). The lead screw (2133) passes through the second gear (2132) and rotates synchronously with the second gear (2132). The lifting sleeve (2134) is threaded onto the lead screw (2133) and connected to the second sleeve (222).

4. The island-style range hood according to claim 3, characterized in that, The push rod component (213) further includes a first sleeve (2135) and a second sleeve (2136) that are slidably fitted. The first sleeve (2135) is connected to the fan module (10). The first gear (2131), the second gear (2132), and the lead screw (2133) are all located inside the first sleeve (2135). The end of the lifting sleeve rod (2134) is fixedly connected to the inner wall of the second sleeve (2136), and the end of the second sleeve (2136) is fixedly connected to the inner wall of the second sleeve (222).

5. The island-style range hood according to claim 1, characterized in that, The fan module (10) includes an auxiliary air box (11) connected to the upper side of the sleeve assembly (22). Two oppositely arranged reinforcing seats (23) are fixed inside the auxiliary air box (11). A crossbeam (24) is connected between the two reinforcing seats (23). The motor (211) is fixed on the crossbeam (24).

6. The island-style range hood according to claim 1, characterized in that, The second sleeve (222) is fitted over the first sleeve (221). The second sleeve (222) includes a sheet metal part (2221) and a maintenance cover (2222). The sheet metal part (2221) is U-shaped, and the openings of the two sheet metal parts (2221) are arranged opposite to each other. The maintenance cover (2222) is detachably connected to the opening of the sheet metal part (2221); or The second sleeve (222) is fitted over the first sleeve (221). The second sleeve (222) includes a sheet metal part (2221) and a glass panel (2223). The sheet metal part (2221) is U-shaped, and the openings of the two sheet metal parts (2221) are arranged opposite to each other. The glass panel (2223) can be detachably connected to the opening of the sheet metal part (2221).

7. The island-style range hood according to claim 6, characterized in that, The second sleeve (222) also includes a reinforcing member (2224), which is located at the opening of the sheet metal part (2221) and connected between the inner walls of opposite sides of the sheet metal part (2221).

8. The island-style range hood according to claim 1, characterized in that, A sliding seal (225) is provided between the bottom end of the first sleeve (221) and the second sleeve (222).

9. The island-style range hood according to claim 1, characterized in that, The first sleeve (221) is provided with fixed slide rails (223) at each of its four corners, and the second sleeve (222) is provided with sliding rails (224) at each of its four corners. The sliding rails (224) are in sliding cooperation with the fixed slide rails (223).

10. The island-style range hood according to claim 9, characterized in that, Both the sliding rail (224) and the fixed rail (223) have L-shaped cross sections.

11. The island-style range hood according to claim 1, characterized in that, It also includes a wire harness (400), which is located in one of the sleeve assemblies (22) and connects the fan module (10) and the smoke collection module (30). A wire guard (25) is provided in the sleeve assembly (22), and the wire harness (400) is embedded in the wire guard (25). One end of the wire guard (25) is fixedly set, and the other end of the wire guard (25) can be raised and lowered with the second sleeve (222).

12. The island-style range hood according to claim 11, characterized in that, The inner bottom of the second sleeve (222) is also provided with a lower wire protection box (26), through which the wire harness (400) can pass into the smoke collection module (30).

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