Chassis device and range hood

Abstract

The present invention provides a chassis device and a range hood, which relate to the technical field of kitchen appliances. The chassis device includes a housing, a fan assembly and a vibration-damping support assembly. The fan assembly is arranged in the housing, and the fan assembly includes a volute. The vibration-damping support assembly is fixed to the inner wall of the housing and arranged between the inner wall of the housing and the outer wall of the volute, so as to fix the volute in the housing and space the volute from the housing. When the range hood using the chassis device is in operation, the vibration generated by the fan assembly, that is, the vibration generated by the volute, is transmitted to the housing through the vibration-damping support assembly. Since the vibration-damping support assembly can play a good vibration-damping role, and the vibration-damping support assembly enables the volute and the housing to be spaced apart, the vibration generated by the fan assembly is basically transmitted to the housing through the vibration-damping support assembly, thereby reducing the possibility of housing vibration and abnormal noise, and improving user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a chassis device and a range hood. Background Art

[0002] Range hoods are common appliances in modern kitchens that improve the cooking environment by absorbing and exhausting oil smoke. When the current range hood is in operation, it is easily affected by factors such as the grid waveform, exhaust resistance, motor, and installation structure, which can cause the whole machine to vibrate and make abnormal noises, resulting in high performance tests and affecting the actual user experience. For example, the vibration caused by the motor's multiple frequency vibrations, electromagnetic harmonic frequencies such as 100 Hz (Hertz), 200 Hz, and 300 Hz, is first transmitted to the volute through the motor bracket, and then from the volute to the chassis, and then from the chassis to the smoke collection chamber, which stimulates the resonance of downstream components and causes vibrations and abnormal noises.

[0003] In the prior art, in order to avoid the above problems, vibration-damping rubber pads are mainly installed at the motor and the volute bracket, but the rubber pads are usually small in size and fail to absorb vibration energy well, and thus fail to play a good role in vibration isolation. In the actual use of the range hood, users are still troubled by large vibrations and abnormal noises, and the experience is not good. Summary of the invention

[0004] The purpose of the present invention is to provide a chassis device and a range hood to solve the technical problem in the prior art that the range hood is prone to vibrate and make abnormal noises during operation, thereby affecting customer experience.

[0005] The chassis device provided by the present invention comprises a chassis body, a fan assembly and a vibration reduction support assembly;

[0006] The fan assembly is arranged in the box, and the fan assembly includes a volute;

[0007] The vibration-damping support assembly is fixed on the inner wall of the box body and is arranged between the inner wall of the box body and the outer wall of the volute, so as to fix the volute in the box body and space the volute from the box body.

[0008] Furthermore, the vibration-damping support assembly includes a vibration-damping block, and the vibration-damping block is connected between the enclosure of the volute and the inner wall of the box body at a position corresponding to the enclosure.

[0009] Furthermore, there are a plurality of vibration-damping blocks, which are sequentially spaced apart along the circumference of the enclosure.

[0010] Further, the box body comprises a first side wall and a second side wall which are arranged opposite to each other, and the first side wall and the second side wall are arranged opposite to each other in the radial direction of the volute;

[0011] The vibration-damping support assembly also includes a lower support connecting plate, which is connected between the first side wall and the second side wall. The vibration-damping block is installed above the lower support connecting plate and abuts against the bottom of the enclosure.

[0012] Furthermore, the vibration damping block connected to the lower supporting connecting plate includes a first vibration damping block and a second vibration damping block, the first vibration damping block abuts between the first side wall and a side of the lower part of the enclosure close to the first side wall, and the second vibration damping block abuts between the second side wall and a side of the lower part of the enclosure close to the second side wall.

[0013] Furthermore, the first vibration damping block and the second vibration damping block are respectively provided with first positioning parts, and the lower supporting connecting plate is respectively provided with second positioning parts corresponding to the two first positioning parts and plug-fitting with the first positioning parts.

[0014] Furthermore, a third positioning portion is provided at the lowest point of the enclosure, and a fourth positioning portion that cooperates and plugs with the third positioning portion is provided on the lower support connecting plate.

[0015] Further, the vibration damping block includes a third vibration damping block and a fourth vibration damping block, the third vibration damping block abuts between the first side wall and the upper side of the enclosure, and the fourth vibration damping block abuts between the second side wall and the upper side of the enclosure.

[0016] Further, the second side wall is arranged corresponding to the volute tongue of the volute;

[0017] The vibration-damping support assembly also includes a first upper support connecting plate and a second upper support connecting plate, the first upper support connecting plate is fixed on the first side wall, and the third vibration-damping block abuts against the bottom of the first upper support connecting plate; the second upper support connecting plate is fixed on the second side wall, and the fourth vibration-damping block abuts against the bottom of the second upper support connecting plate.

[0018] Further, the lower support connecting plate includes a middle section and end sections respectively connected to both ends of the middle section, and the two end sections are respectively connected to the first side wall and the second side wall;

[0019] Along the direction away from the middle section toward the corresponding side wall, the widths of the two end sections gradually decrease, and / or the middle section is arranged in an arc shape convex downward, and / or a raised portion is connected to the bottom of the middle section, and the raised portion gradually shrinks from top to bottom.

[0020] Furthermore, the vibration-damping block arranged on the lower supporting connecting plate is provided with guide arc surfaces on both sides thereof which are arranged opposite to each other in the axial direction of the volute, and the two guide arc surfaces of the same vibration-damping block are arranged gradually close to each other in the direction from top to bottom.

[0021] Furthermore, the side of any one of the vibration-damping blocks facing the box body is in contact with the inner wall of the box body, and the side of any one of the vibration-damping blocks facing the enclosure is an arc-shaped surface consistent with the direction of the enclosure and is in contact with the enclosure.

[0022] Furthermore, a guide support block is provided on the outer side surface of the enclosure, a positioning groove is provided on the vibration damping block, and the guide support block is inserted into the positioning groove.

[0023] Furthermore, the material of the vibration damping block is rubber;

[0024] and / or;

[0025] The vibration-damping block is provided with a vibration-damping hole.

[0026] Furthermore, the vibration-damping holes on the vibration-damping block include a plurality of dispersed transverse vibration-damping holes and a plurality of dispersed longitudinal vibration-damping holes, and the axes of the transverse vibration-damping holes are perpendicular to the axes of the longitudinal vibration-damping holes.

[0027] Furthermore, a plurality of first noise reduction holes are arranged on the enclosure plate at positions corresponding to the vibration reduction blocks, and a side connection cavity is arranged on the vibration reduction block corresponding to the first noise reduction holes, and the side connection cavity is arranged in one-to-one correspondence with the first noise reduction holes.

[0028] Furthermore, a plurality of second noise reduction holes are arranged at positions of the enclosure corresponding to the vibration reduction blocks, noise reduction grooves are arranged on the vibration reduction blocks corresponding to the second noise reduction holes, and sound absorbing materials are arranged in the noise reduction grooves.

[0029] Further, the plurality of first noise reduction holes form a plurality of first hole rows, each first hole row comprises a plurality of first noise reduction holes sequentially spaced apart in the width direction of the enclosure plate, and the plurality of first hole rows are sequentially spaced apart in the circumferential direction of the enclosure plate;

[0030] The plurality of second noise reduction holes form a plurality of second hole rows, each second hole row comprises a plurality of second noise reduction holes sequentially spaced apart in the width direction of the enclosure plate, and the plurality of second hole rows are sequentially spaced apart in the circumferential direction of the enclosure plate;

[0031] Multiple rows of the first hole rows and multiple rows of the second hole rows are alternately arranged in sequence along the circumference of the enclosure plate, and each row of the second hole rows corresponds to one of the noise reduction grooves.

[0032] Furthermore, the outer side surface of the enclosure is coated with an oil-proof film that allows sound to pass through and blocks oil stains.

[0033] Further, the box body comprises a first side wall and a second side wall which are arranged opposite to each other, and the first side wall and the second side wall are arranged opposite to each other in the radial direction of the volute;

[0034] The first side wall and the second side wall are respectively provided with guide grooves for guiding the installation of the volute.

[0035] Further, the second side wall is arranged corresponding to the side where the volute tongue of the volute is located, and the length of the guide groove on the second side wall is smaller than the length of the guide groove on the first side wall.

[0036] Furthermore, a guide mounting groove is provided on the vibration damping block, and a guide rail cooperating with the guide mounting groove is provided on the side where the side plate of the enclosure is connected to the side plate of the volute, which is away from the side plate. The guide rail extends along the circumference of the enclosure, and the guide rail can slide along the guide mounting groove and is sealed and connected to the guide mounting groove.

[0037] The range hood provided by the present invention comprises the chassis device provided by the present invention.

[0038] The chassis device provided by the present invention includes a housing, a fan assembly and a vibration-damping support assembly; the fan assembly is arranged in the housing, and the fan assembly includes a volute; the vibration-damping support assembly is fixed on the inner wall of the housing, and is arranged between the inner wall of the housing and the outer wall of the volute, so as to fix the volute in the housing, and to space the volute from the housing. The chassis device of the present invention relies on the vibration-damping support assembly arranged between the inner wall of the housing and the outer wall of the volute to achieve the fixation of the volute. When the range hood using the chassis device of the present invention is in operation, the vibration generated by the fan assembly, that is, the vibration generated by the volute, is transmitted to the housing after passing through the vibration-damping support assembly. Since the vibration-damping support assembly can play a good vibration-damping role, and the vibration-damping support assembly enables the volute and the housing to be spaced apart, the vibration generated by the fan assembly is basically transmitted to the housing after passing through the vibration-damping support assembly, thereby reducing the possibility of the fan assembly causing the housing to vibrate and produce abnormal noise, and improving the user experience.

[0039] The range hood provided by the present invention includes the chassis device provided by the present invention. The beneficial effects that can be achieved by the range hood of the present invention at least include the beneficial effects that can be achieved by the chassis device of the present invention, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of a chassis device (left side wall omitted) provided in an embodiment of the present invention;

[0042] Figure 2 for Figure 1 A side view schematic diagram of

[0043] Figure 3 for Figure 1 A schematic diagram of a cross section cut along the vertical direction;

[0044] Figure 4 for Figure 3 A magnified view of part A;

[0045] Figure 5 for Figure 3 A magnified view of part B;

[0046] Figure 6 A schematic diagram of the airflow at the bottom side of the volute of the chassis device provided by an embodiment of the present invention;

[0047] Figure 7 for Figure 6 A schematic side view from the front to the back of the chassis device (the front side wall, i.e., the second side wall, is omitted);

[0048] Figure 8 for Figure 6 Schematic diagram from top view;

[0049] Fig. 9 A schematic diagram of a lower support connecting plate provided in an embodiment of the present invention;

[0050] Fig.10 for Fig. 9 A schematic diagram of the main view;

[0051] Fig.11 for Fig. 9 A side view schematic diagram of

[0052] Fig.12 for Fig. 9 A top view schematic diagram of

[0053] Fig.13 A schematic diagram of the installation of a lower support connecting plate, a first vibration damping block, and a second vibration damping block at an angle provided in an embodiment of the present invention;

[0054] Fig.14 for Fig.13 Installation diagram from another angle;

[0055] Fig.15 A schematic diagram of a volute provided by an embodiment of the present invention, cut along a vertical section after being assembled with a first vibration-damping block and a second vibration-damping block;

[0056] Fig.16 A schematic diagram of a panel provided in an embodiment of the present invention;

[0057] Fig.17 An exploded schematic diagram of the internal structure of another chassis device provided by an embodiment of the present invention;

[0058] Fig.18 for Fig.17 Enlarged view of part C;

[0059] Fig.19 for Fig.17 An exploded schematic diagram of some components;

[0060] Fig. 20 for Fig.17 Schematic diagram from another perspective.

[0061] Icons: 100-box; 101-guide rail; 110-first side wall; 120-second side wall; 121-snail; 130-left side wall; 140-right side wall; 150-top plate; 200-fan assembly; 210-volute; 220-enclosure; 221-guide support block; 222-through hole; 2221-first noise reduction hole; 2222-second noise reduction hole; 223-guide rail; 230-side plate; 300-guide installation groove; 301-second positioning portion; 302-first positioning portion; 303-second Three positioning parts; 304-fourth positioning part; 305-guide arc surface; 306-positioning groove; 307-vibration damping hole; 3071-lateral vibration damping hole; 3072-longitudinal vibration damping hole; 308-side chamber; 309-noise reduction groove; 310-first vibration damping block; 320-second vibration damping block; 330-third vibration damping block; 340-fourth vibration damping block; 350-lower support connecting plate; 351-end section; 352-middle section; 353-raised part; 360-first upper support connecting plate; 370-second upper support connecting plate. DETAILED DESCRIPTION

[0062] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] Example

[0064] like Figures 1 to 20As shown, this embodiment provides a chassis device, including a housing 100, a fan assembly 200 and a vibration reduction support assembly. The fan assembly 200 is arranged in the housing 100, and the fan assembly 200 includes a volute 210; the vibration reduction support assembly is fixed to the inner wall of the housing 100, and is arranged between the inner wall of the housing 100 and the outer wall of the volute 210, so as to fix the volute 210 in the housing 100 and space the volute 210 from the housing 100.

[0065] It is understandable that the volute 210 of the chassis device of this embodiment is fixed by means of a vibration reduction support assembly disposed in the housing 100, and the vibration generated by the fan assembly 200 is buffered and then transmitted to the housing 100. Specifically, when the range hood using the chassis device of this embodiment is in operation, the vibration generated by the fan assembly 200, that is, the vibration generated by the volute 210 is transmitted to the housing 100 through the vibration reduction support assembly. Since the vibration reduction support assembly can play a good vibration reduction role, and the vibration reduction support assembly enables the volute 210 and the housing 100 to be spaced apart, the vibration generated by the fan assembly 200 is basically transmitted to the housing 100 through the vibration reduction support assembly, thereby reducing the possibility of the fan assembly 200 causing the housing 100 to vibrate and generate abnormal noise, and improving the user experience.

[0066] The fan assembly 200 of this embodiment may further include components such as a motor disposed on the volute 210 . The motor may be fixed on the volute 210 , and a vibration reduction structure such as a vibration reduction pad may be disposed between the motor and the volute 210 .

[0067] The vibration-damping support assembly of the chassis device of this embodiment includes a vibration-damping block, which is connected between the enclosure 220 of the volute 210 and the inner wall of the box body 100 at the position corresponding to the enclosure 220. The vibration-damping block can be a block extending along the extension direction of the enclosure 220, and its shape is substantially the same as the enclosure 220 of the volute 210, so that the volute 210 can be fixed and a gap is formed between the box body 100 and the enclosure 220 of the volute 210. The vibration-damping block can also be in the form of multiple blocks, in which case the multiple vibration-damping blocks are sequentially spaced along the circumference of the enclosure 220.

[0068] In this embodiment, there are four vibration-damping blocks, namely, a first vibration-damping block 310, a second vibration-damping block 320, a third vibration-damping block 330 and a fourth vibration-damping block 340. The following is a detailed introduction to the arrangement of the vibration-damping blocks.

[0069] like Figure 1 to Figure 3As shown, the housing 100 includes a first side wall 110 and a second side wall 120 that are arranged opposite to each other, and the first side wall 110 and the second side wall 120 are arranged opposite to each other in the radial direction of the volute 210; the vibration-damping support assembly also includes a lower support connecting plate 350, and the lower support connecting plate 350 is connected between the first side wall 110 and the second side wall 120, and a vibration-damping block is installed above the lower support connecting plate 350, and the vibration-damping block abuts against the lower side of the enclosure 220. The vibration-damping blocks connected to the lower support connecting plate 350 include a first vibration-damping block 310 and a second vibration-damping block 320, and the first vibration-damping block 310 and the second vibration-damping block 320 are both connected above the lower support connecting plate 350, and the first vibration-damping block 310 abuts between the first side wall 110 and the lower side of the enclosure 220 close to the first side wall 110, and the second vibration-damping block 320 abuts between the second side wall 120 and the lower side of the enclosure 220 close to the second side wall 120.

[0070] Among them, refer to Figure 1 to Figure 3 As shown, the box body 100 is square, including a front side wall, a left side wall 130, a rear side wall, a right side wall 140 and a top plate 150, wherein the top plate 150 is provided with an opening for installing the volute air outlet. When the volute 210 in the box body 100 is installed, it is usually in a left-right air intake mode, that is, the axial direction of the volute 210 is along the left-right direction, and the radial direction of the volute 210 is perpendicular to the axial direction. The first side wall 110 and the second side wall 120 are arranged oppositely in the radial direction of the volute 210, that is, the first side wall 110 is one of the rear side wall and the front side wall of the box body 100, and the second side wall 120 is the other. Specifically in the present embodiment, the second side wall 120 is arranged on the side where the volute tongue 121 of the enclosure 220 is located, that is, the second side wall 120 is the front side wall, and the first side wall 110 is the rear side wall.

[0071] The lower support connecting plate 350 includes a middle section 352 and end sections 351 connected to both ends of the middle section 352, and the two end sections 351 are connected to the first side wall 110 and the second side wall 120 respectively. Figure 1 In the front-to-back direction, the lower support connecting plate 350 includes an end section 351, a middle section 352 and an end section 351 which are sequentially arranged as one body. The first vibration damping block 310 is arranged on the end section 351 at the rear side, and the second vibration damping block 320 is arranged on the end section 351 at the front side. In one implementation, as Fig. 9 and Fig.10 As shown, the left and right sides of the end section 351 (with Figure 1 A rib is arranged above the edge, and the lower ends of the first vibration damping block 310 and the second vibration damping block 320 are arranged in the rib of the corresponding end section 351, and fixed by the rib. In another implementation, as Fig.19 and Fig. 20As shown, the first vibration damping block 310 and the second vibration damping block 320 are respectively provided with first positioning portions 302, and the lower support connecting plate 350 is respectively provided with second positioning portions 301 that are plugged in and matched with the two first positioning portions 302. Specifically, in this embodiment, the first positioning portion 302 is a groove, and the second positioning portion 301 is a protrusion that matches the groove.

[0072] The third vibration-damping block 330 abuts against the first side wall 110 and the upper side of the enclosure 220, and the fourth vibration-damping block 340 abuts against the second side wall 120 and the upper side of the enclosure 220. Figure 1 to Figure 3 As shown, the third vibration damping block 330 is arranged between the rear side wall of the box body 100 and the top of the enclosure 220, and the fourth vibration damping block 340 is arranged between the front side wall of the box body 100 and the top of the enclosure 220. The vibration damping support assembly further includes a first upper support connecting plate 360 ​​and a second upper support connecting plate 370. The first upper support connecting plate 360 ​​is fixed on the first side wall 110, and the third vibration damping block 330 abuts against the lower part of the first upper support connecting plate 360; the second upper support connecting plate 370 is fixed on the second side wall 120, and the fourth vibration damping block 340 abuts against the lower part of the second upper support connecting plate 370.

[0073] It should be noted that a first upper supporting connecting plate 360 ​​connected to the first side wall 110 can be separately provided above the third vibration damping block 330 near the air outlet of the volute 210 to fix the third vibration damping block 330, or the outlet connecting sleeve of the air outlet of the volute 210 can be directly used as the first upper supporting connecting plate 360.

[0074] In this embodiment, the side of any vibration damping block facing the box body 100 is in contact with the inner wall of the box body 100, and the side of any vibration damping block facing the enclosure 220 is an arc-shaped surface that is consistent with the direction of the enclosure 220 and is in contact with the enclosure 220. Taking the first vibration damping block 310 as an example, the side surface of the rear side of the first vibration damping block 310 is roughly a vertical surface, and the vertical surface is in contact with the first side wall 110. The side surface of the front side of the first vibration damping block 310 is consistent with the direction of the enclosure 220, and is an arc-shaped surface that is in contact with the enclosure 220, so as to improve the installation stability of the volute 210. At the same time, the bottom surface of the first vibration damping block 310 is also a plane parallel to the upper surface of the lower support connecting plate 350, which can also improve the installation stability of the volute 210.

[0075] In order to further improve the installation stability of the volute 210 and prevent the volute 210 from sliding or moving, the chassis device of this embodiment provides two specific structural forms.

[0076] Specific implementation method 1:

[0077] A positioning groove 306 is provided on any vibration-damping block, and a guide support block 221 is correspondingly provided on the enclosure 220 of the volute 210 . The guide support block 221 can be inserted into the positioning groove 306 .

[0078] like Figure 3 to Figure 5 As shown, the first vibration damping block 310, the second vibration damping block 320, the third vibration damping block 330 and the fourth vibration damping block 340 are all provided with positioning grooves 306 on the arc surface facing the enclosure 220. The enclosure 220 is provided with a guide support block 221 corresponding to each positioning groove 306, and the guide support block 221 is inserted into the corresponding positioning groove 306 to prevent the volute 210 from moving.

[0079] Specific implementation method 2:

[0080] like Figures 17 to 20 As shown, a third positioning portion 303 is provided at the lowest point of the enclosure 220 , and a fourth positioning portion 304 which cooperates and plugs with the third positioning portion 303 is provided on the lower supporting connecting plate 350 .

[0081] Specifically, the third positioning portion 303 is two axle pins, and the fourth positioning portion 304 is two fixing holes, and the movement of the volute 210 is restricted by inserting the axle pins into the fixing holes.

[0082] In this embodiment, the housing 100 is also provided with a guide structure for facilitating the installation of the volute 210 , and two specific implementation methods are also provided in this embodiment.

[0083] It should be noted that the chassis device of this embodiment can also be combined with specific implementation mode 1 and specific implementation mode 2 to achieve the purpose of fixing the volute. Specific implementation method three:

[0085] like Figure 1 to Figure 3 , Figure 13 to Figure 15 As shown, guide grooves 101 for installing the guide volute 210 are respectively provided on the first side wall 110 and the second side wall 120 .

[0086] The guide groove 101 on the first side wall 110 and the second side wall 120 have the same structure. Taking the guide groove 101 arranged on the first side wall 110 as an example for specific description, the guide groove 101 includes two guide rods arranged at intervals along the left-right direction of the first side wall 110, each guide rod extending along the up-down direction of the first side wall 110, and the distance between the two guide rods is adapted to the width of the enclosure 220 of the volute 210. When the volute 210 is installed, the edge of the enclosure 220 in the width direction abuts against the two guide rods of the guide groove 101, and slides downward along the two guide rods to be installed in place.

[0087] It should be noted that since the spiral line of the volute 210 usually expands larger at the rear wall of the box body 100, that is, the first side wall 110, correspondingly, the length of the guide groove 101 on the second side wall 120 (the distance extending in the up and down directions is the length) is smaller than the length of the guide groove 101 on the first side wall 110, so as to better guide the volute 210.

[0088] The third specific implementation mode may be combined with the first specific implementation mode and / or the second specific implementation mode. Taking the combination of the third embodiment of the present invention and the first embodiment of the present invention as an example, the specific installation process of the volute 210 of the third embodiment of the present invention is roughly as follows: the lower support connecting plate 350 is connected to the first side wall 110 and the second side wall 120 of the box body 100, and the first vibration damping block 310 and the second vibration damping block 320 can be pre-fixed on the lower support connecting plate 350; then the volute 210 is pushed into the box body 100 along the guide groove 101, and the guide support block 221 on the enclosure 220 cooperates with the positioning groove 306 on the first vibration damping block 310 and the second vibration damping block 320 to play a guiding and positioning role; after the volute 210 is installed in place, the third vibration damping block 330 and the fourth vibration damping block 340 are installed to fix the volute 210, wherein the third vibration damping block 330 is fixed with the first upper support connecting plate 360, and the fourth vibration damping block 340 is fixed with the second upper support connecting plate 370, and finally the top plate 150 is installed to achieve the final connection. Specific implementation method four:

[0090] A guide mounting groove 300 is arranged on the vibration damping block, and a guide rail 223 cooperating with the guide mounting groove 300 is arranged on the side of the side where the enclosure 220 is connected to the side plate 230 of the volute 210, which is away from the side plate 230. The guide rail 223 extends along the circumference of the enclosure 220, and the guide rail 223 can slide along the guide mounting groove 300 and is sealed and connected to the guide mounting groove 300.

[0091] like Figures 17 to 20 As shown, the first vibration damping block 310, the second vibration damping block 320, the third vibration damping block 330, and the fourth vibration damping block 340 are all provided with guide installation grooves 300 on both sides of the width direction of the enclosure 220. Specifically, the first vibration damping block 310 is taken as an example for introduction. Two guide installation grooves 300 are provided at intervals in the left and right directions of the first vibration damping block 310. The left and right directions of the enclosure 220, i.e., the edges in the width direction, protrude outward with guide rails 223. The guide rails 223 and the guide installation grooves 300 both extend along the circumference of the enclosure 220. When the volute 210 is installed, the guide rails 223 on the same side are inserted into the guide installation grooves 300 on the same side.

[0092] This specific implementation mode 4 can be combined with specific implementation mode 1 and / or specific implementation mode 2. Take the combination of this specific implementation mode 4 and specific implementation mode 2 as an example. Figures 17 to 20As shown, the specific installation process of the volute 210 is roughly as follows: the lower support connecting plate 350 is connected to the first side wall 110 and the second side wall 120 of the box body 100, and the first vibration damping block 310 and the second vibration damping block 320 can be fixed on the lower support connecting plate 350 through the cooperation of the first positioning portion 302 and the second positioning portion 301; then the volute 210 is pushed into the box body 100 along the guide installation groove 300, and at this time, the guide rail 223 on the enclosure 220 cooperates with the guide installation groove 300. When the volute 210 is lowered into place, the third positioning portion 303 cooperates with the fourth positioning portion 304 to achieve final positioning. After the volute 210 is fixed, the third vibration damping block 330 and the fourth vibration damping block 340 are installed to achieve the final fixation of the volute 210.

[0093] It should be noted that the chassis device of this embodiment can also be combined with specific implementation mode three and specific implementation mode four to achieve the purpose of volute guidance.

[0094] The widths of both end sections 351 of the lower support connecting plate 350 of the chassis device of this embodiment are gradually reduced in the direction away from the middle section 352 toward the corresponding side wall. Furthermore, the middle section 352 is arranged in an arc shape convex downward from the first side wall 110 to the second side wall 120. A protrusion 353 may be connected below the middle section 352, and the protrusion 353 gradually shrinks in the direction from top to bottom.

[0095] like Figures 9 to 12 As shown, the two end sections 351 are arranged roughly horizontally, and are used to support the first vibration damping block 310 and the second vibration damping block 320. The two end sections 351 are both tapered trapezoids in the horizontal direction to reduce the area of ​​the two end sections and avoid the lower support connecting plate 350 from having too much influence on the airflow. The middle section 352 is an arc convex downward, and the tapered convex part 353 connected below the middle section 352 can both guide the airflow.

[0096] Furthermore, the vibration-damping block disposed on the lower supporting connecting plate 350 is provided with guide arc surfaces 305 on both sides of the volute 210 that are arranged opposite to each other in the axial direction, and the two guide arc surfaces 305 are gradually arranged to approach each other from top to bottom. Fig.13 and Fig.14 As shown, the left side and right side of the first vibration damping block 310 (refer to Figure 1 The left side and the right side of the second vibration damping block 320 are the guide arc surface 305. The guide arc surface 305 is conducive to the flow of airflow.

[0097] The flow of air at the bottom of the volute 210 is as follows: Figure 6 and Figure 7As shown by the arrows. The chassis device of this embodiment sets the lower support connecting plate 350 to a structure that is large in the middle and small at both ends, and combines this structure to set an arc-shaped guiding arc surface 305 at the first vibration damping block 310 and the second vibration damping block 320 (the area near the front side wall or the rear side wall), and further combines the protrusion 353 protruding toward the bottom side of the volute 210 near the middle area of ​​the lower support connecting plate 350, which together play a guiding role for the airflow, prevent the airflow from directly impacting the lower support connecting plate 350, and reduce the impact noise.

[0098] The material of the vibration-damping block of the chassis device of this embodiment may be rubber, and specifically may be a high-damping rubber material.

[0099] In order to further improve the vibration reduction and noise reduction effect, a vibration reduction and noise reduction structure is also provided on the vibration reduction block of this embodiment. The vibration reduction and noise reduction structure includes one, two or three of the vibration reduction hole 307, the bypass cavity 308 and the noise reduction groove 309. In this embodiment, the vibration reduction and noise reduction structure including the above three types is taken as an example for description.

[0100] First, it should be noted that the first vibration damping block 310 , the second vibration damping block 320 , the third vibration damping block 330 and the fourth vibration damping block 340 all include the same vibration damping and noise reduction structure. This embodiment is mainly described by taking the first vibration damping block 310 as an example.

[0101] The vibration-damping holes 307 can actually be understood as the surface weakened grooves on the vibration-damping block, including a plurality of dispersed transverse vibration-damping holes 3071 and a plurality of dispersed longitudinal vibration-damping holes 3072, and the axes of the transverse vibration-damping holes 3071 and the axes of the longitudinal vibration-damping holes 3072 are arranged perpendicularly. Fig.13 and Fig.14 As shown, the vibration-damping hole 307 is an opening on the outer peripheral wall of the first vibration-damping block 310 and is not connected to the arc surface of the first vibration-damping block 310 in contact with the enclosure 220. A hole is provided on the side of the first vibration-damping block 310 in contact with the first side wall 110 along the front-to-back direction (refer to Figure 1 The holes extending in the direction of the first vibration-damping block 310 are provided on the left and right sides (refer to Figure 1 A hole extending in the left-right direction is provided on the bottom surface of the first vibration damping block 310, and this hole is a transverse vibration damping hole 3071; a hole extending in the up-down direction is provided on the bottom surface of the first vibration damping block 310, and this hole is a longitudinal vibration damping hole 3072. In fact, the holes in the above three positions are all vertically cross-arranged.

[0102] Reference Fig.17 and Fig.18As shown, a plurality of first noise reduction holes 2221 are provided at positions of the enclosure 220 corresponding to the vibration reduction blocks, and a side connection cavity 308 is provided at the vibration reduction blocks corresponding to the first noise reduction holes 2221, and the side connection cavity 308 is provided in one-to-one correspondence with the first noise reduction holes 2221. A plurality of second noise reduction holes 2222 are provided at positions of the enclosure 220 corresponding to the vibration reduction blocks, and a noise reduction groove 309 is provided at the vibration reduction blocks corresponding to the second noise reduction holes 2222, and a sound absorbing material is provided in the noise reduction groove 309.

[0103] Specifically, a plurality of first noise reduction holes 2221 form a plurality of first hole rows, each of which includes a plurality of first noise reduction holes 2221 sequentially spaced along the width direction of the enclosure 220, and the plurality of first hole rows are sequentially spaced along the circumference of the enclosure 220. A plurality of second noise reduction holes 2222 form a plurality of second hole rows, each of which includes a plurality of second noise reduction holes 2222 sequentially spaced along the width direction of the enclosure 220, and the plurality of second hole rows are sequentially spaced along the circumference of the enclosure 220. The plurality of first hole rows and the plurality of second hole rows are alternately spaced along the circumference of the enclosure 220, and each second hole row corresponds to a noise reduction groove 309.

[0104] It should be noted that the first noise reduction hole 2221 and the second noise reduction hole 2222 are both through holes 222 opened on the enclosure 220, and they can be of the same structure. The first noise reduction hole 2221 and the second noise reduction hole 2222 on the enclosure 220 of this embodiment have a noise reduction effect. The specific principle is that the air column in the through hole 222 is similar to a piston and has a certain sound quality, and the cavity formed by the bypass cavity 308 is similar to a spring and has a certain sound compliance; when the air column vibrates, the friction damping between it and the wall of the through hole 222 produces a certain sound resistance, and the entire system is similar to a side branch filter connected. When the sound wave is incident on the inlet of the through hole 222, due to the sudden change of the acoustic impedance, part of the sound energy will be reflected back to the sound source. At the same time, under the action of the sound wave, the air column in the through hole 222 vibrates, and the friction damping during the vibration causes part of the sound energy to be converted into heat energy and dissipated. In this way, a small amount of sound energy is radiated, thereby achieving the purpose of noise elimination.

[0105] In this embodiment, a through hole 222 on a part of the enclosure 220 is provided with a side connection chamber 308 on the vibration damping block matched therewith, and each through hole 222 corresponds to a side connection chamber 308, forming a resonant resistive silencer to achieve the purpose of sound reduction. In addition, the size of each side connection chamber 308 may be different, and the adjacent side connection chambers 308 may be micro-connected through a small gap, thereby expanding the sound reduction frequency and achieving the elimination of noise of different frequencies. A noise reduction groove 309 is provided behind the through hole 222 on another part of the enclosure 220, and a sound absorbing material is provided therein, forming a resistive silencer. The noise in the volute 210 enters the noise reduction groove 309 through the through hole 222 of the enclosure 220, and is then absorbed by the sound absorbing material.

[0106] Among them, the noise reduction grooves 309 and the bypass chambers 308 (groups) are arranged in sequence and at intervals and cross-arranged, so that after cooperating with the enclosure 220, a structure in which resistive and reactive silencers coexist is formed, which can silence low, medium and high frequencies, expand the frequency range of silencer, and achieve the best sound absorption effect.

[0107] In addition, the vibration-damping block of this embodiment is provided with cross-horizontal and vertical vibration-damping holes 307 inside, which can further play a buffering and vibration-absorbing role from the spatial dimension, and block the transmission of vibrations in various directions to the box body 100. For example, when vibration energy is transmitted to the first vibration-damping block 310, the vibration-damping holes opened therein can continuously compress and rub to consume energy.

[0108] Furthermore, in view of the manner in which the first noise reduction hole 2221 and the second noise reduction hole 2222 in the form of a through hole 222 are provided on the enclosure 220, the outer surface of the enclosure 220 is coated with an oil-proof film that allows sound to pass through and blocks oil. It can be understood that the oil-proof film is coated and fixed on the enclosure 220, which is convenient to process and not easy to be damaged, and can be well fitted with the enclosure 220, thereby increasing the service life of the oil-proof film. The oil-proof film can pass sound but can block oil from passing through, which can prevent oil from contaminating the vibration damping block, thereby achieving the purpose of protecting the muffler formed by the vibration damping block.

[0109] In the prior art, there may also be a way to achieve noise reduction by setting a through hole 222 on the enclosure 220, but this method of the prior art generally attaches sound-absorbing material behind the enclosure 220, and its sealing cannot be complete, and pressure leakage will occur under large resistance, which reduces the maximum pressure. In response to this problem, the guide structure of the volute 210 of the chassis device of this embodiment preferably adopts the form of specific implementation method four. This is because the vibration damping block itself is elastic, and when the guide mounting groove 300 set thereon cooperates with the guide rail of the enclosure 220, the two sides in the width direction of the position where the through hole 222 is set on the enclosure 220 can be sealed, so that the exchange between the enclosure 220 and the outside world is blocked, and when operating under large resistance of the common flue, the through holes 222 on the enclosure 220 (that is, the first noise reduction hole 2221 and the second noise reduction hole 2222) will not leak pressure.

[0110] A high damping vibration isolation pad is also provided between the outlet connection sleeve of the volute 210 of the chassis device of this embodiment and the top plate 150, and the vibration isolation pad is also made of rubber.

[0111] In summary, the chassis device of this embodiment allows the volute 210 to be completely within the first vibration damping block 310, the second vibration damping block 320, the third vibration damping block 330 and the fourth vibration damping block 340, and its vibration is basically completely blocked, which greatly reduces the external transmission ratio and consumes a lot of vibration energy, so that the whole machine runs smoothly without shaking and abnormal noise.

[0112] This embodiment also provides a range hood, including the chassis device provided in this embodiment.

[0113] Specifically, the range hood of this embodiment may further include a fume collecting hood connected to the air inlet of the chassis device and other structures.

[0114] The range hood of this embodiment has the same beneficial effects as the chassis device provided in this embodiment, which will not be described in detail here.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chassis device, characterized in that: It comprises a box body (100), a fan assembly (200) and a vibration reduction support assembly; The fan assembly (200) is arranged in the housing (100), and the fan assembly (200) comprises a volute (210); The vibration-damping support assembly is fixed on the inner wall of the box (100) and is arranged between the inner wall of the box (100) and the outer wall of the volute (210), so as to fix the volute (210) in the box (100) and to space the volute (210) from the box (100); The vibration-damping support assembly comprises vibration-damping blocks and a lower support connecting plate (350), and the vibration-damping blocks comprise a first vibration-damping block (310), a second vibration-damping block (320), a third vibration-damping block (330) and a fourth vibration-damping block (340); The box body (100) comprises a top plate (150) and a first side wall (110) and a second side wall (120) which are arranged opposite to each other, wherein the first side wall (110) and the second side wall (120) are arranged opposite to each other in the radial direction of the volute (210); the lower supporting connecting plate (350) is connected between the first side wall (110) and the second side wall (120); The first vibration damping block (310) and the second vibration damping block (320) are installed above the lower supporting connecting plate (350); the first vibration damping block (310) is abutted between the first side wall (110) and a side of the lower part of the enclosing plate (220) of the volute (210) close to the first side wall (110), and the second vibration damping block (320) is abutted between the second side wall (120) and a side of the lower part of the enclosing plate (220) close to the second side wall (120); The third vibration-damping block (330) abuts against a side of the upper part of the enclosure plate (220) close to the first side wall (110) and between the first side wall (110), and the fourth vibration-damping block (340) abuts against a side of the upper part of the enclosure plate (220) close to the second side wall (120) and between the second side wall (120); An opening for installing the air outlet of the volute (210) is provided on the top plate (150), and a high-damping vibration isolation pad is provided between an outlet connection sleeve of the air outlet of the volute (210) and the top plate (150).

2. The chassis device according to claim 1, characterized in that: The first vibration damping block (310) and the second vibration damping block (320) are respectively provided with first positioning portions (302), and the lower supporting connecting plate (350) is respectively provided with second positioning portions (301) corresponding to the two first positioning portions (302) and plug-fitting with the first positioning portions (302).

3. The chassis device according to claim 1, characterized in that: A third positioning portion (303) is provided at the lowest point of the enclosure (220), and a fourth positioning portion (304) which cooperates and plugs with the third positioning portion (303) is provided on the lower support connection plate (350).

4. The chassis device according to claim 1, characterized in that: The second side wall (120) is arranged corresponding to the volute tongue (121) of the volute (210); The vibration-damping support assembly further comprises a first upper support connecting plate (360) and a second upper support connecting plate (370); the first upper support connecting plate (360) is fixed on the first side wall (110), and the third vibration-damping block (330) abuts against the bottom of the first upper support connecting plate (360); the second upper support connecting plate (370) is fixed on the second side wall (120), and the fourth vibration-damping block (340) abuts against the bottom of the second upper support connecting plate (370).

5. The chassis device according to claim 1, characterized in that: The lower supporting connecting plate (350) comprises a middle section (352) and end sections (351) respectively connected to both ends of the middle section (352), and the two end sections (351) are respectively connected to the first side wall (110) and the second side wall (120); Along the direction away from the middle section (352) toward the corresponding side wall, the widths of the two end sections (351) are gradually reduced, and / or the middle section (352) is arranged in an arc shape that bulges downward, and / or a raised portion (353) is connected below the middle section (352), and the raised portion (353) gradually shrinks in a direction from top to bottom.

6. The chassis device according to claim 5, characterized in that: The vibration-damping block arranged on the lower supporting connecting plate (350) is provided with guide arc surfaces (305) on both sides of the volute (210) that are arranged opposite to each other in the axial direction, and the two guide arc surfaces (305) of the same vibration-damping block are arranged gradually closer to each other in a direction from top to bottom.

7. The chassis device according to claim 1, characterized in that: The side surface of any one of the vibration-damping blocks facing the box body (100) is in contact with the inner wall of the box body (100), and the side surface of any one of the vibration-damping blocks facing the enclosure (220) is an arc-shaped surface that is consistent with the direction of the enclosure (220) and is in contact with the enclosure (220).

8. The chassis device according to any one of claims 1 to 7, characterized in that: A guide support block (221) is provided on the outer side surface of the enclosure plate (220), a positioning groove (306) is provided on the vibration damping block, and the guide support block (221) is inserted into the positioning groove (306).

9. The chassis device according to any one of claims 1 to 7, characterized in that: The material of the vibration damping block is rubber; and / or; The vibration-damping block is provided with a vibration-damping hole (307).

10. The chassis device according to claim 9, characterized in that: The vibration-damping holes (307) on the vibration-damping block include a plurality of dispersed transverse vibration-damping holes (3071) and a plurality of dispersed longitudinal vibration-damping holes (3072), and the axes of the transverse vibration-damping holes (3071) are arranged perpendicular to the axes of the longitudinal vibration-damping holes (3072).

11. The chassis device according to claim 10, characterized in that: A plurality of first noise reduction holes (2221) are arranged on the enclosure (220) at positions corresponding to the vibration reduction blocks, and a side connection cavity (308) is arranged on the vibration reduction block corresponding to the first noise reduction holes (2221), and the side connection cavity (308) and the first noise reduction holes (2221) are arranged in a one-to-one correspondence.

12. The chassis device according to claim 11, characterized in that: A plurality of second noise reduction holes (2222) are arranged on the enclosure (220) at positions corresponding to the vibration reduction blocks, noise reduction grooves (309) are arranged on the vibration reduction blocks corresponding to the second noise reduction holes (2222), and sound absorbing material is arranged in the noise reduction grooves (309).

13. The chassis device according to claim 12, characterized in that: The plurality of first noise reduction holes (2221) form a plurality of first hole rows, each first hole row comprising a plurality of first noise reduction holes (2221) sequentially spaced apart along the width direction of the enclosure plate (220), and the plurality of first hole rows are sequentially spaced apart along the circumference of the enclosure plate (220); The plurality of second noise reduction holes (2222) form a plurality of second hole rows, each second hole row comprising a plurality of second noise reduction holes (2222) sequentially spaced along the width direction of the enclosure plate (220), and the plurality of second hole rows are sequentially spaced along the circumference of the enclosure plate (220); Multiple rows of the first hole rows and multiple rows of the second hole rows are alternately arranged in sequence along the circumference of the enclosure (220), and each row of the second hole rows corresponds to one of the noise reduction grooves (309).

14. The chassis device according to claim 11, characterized in that: The outer side surface of the enclosure (220) is coated with an oil-proof film that allows sound to pass through and blocks oil stains.

15. The chassis device according to any one of claims 1 to 7, characterized in that: The housing (100) comprises a first side wall (110) and a second side wall (120) which are arranged opposite to each other, and the first side wall (110) and the second side wall (120) are arranged opposite to each other in the radial direction of the volute (210); The first side wall (110) and the second side wall (120) are respectively provided with guide grooves (101) for guiding the installation of the volute (210).

16. The chassis device according to claim 15, characterized in that: The second side wall (120) is arranged corresponding to a side where the volute tongue (121) of the volute (210) is located, and the length of the guide groove (101) on the second side wall (120) is smaller than the length of the guide groove (101) on the first side wall (110).

17. The chassis device according to any one of claims 1 to 7, characterized in that: A guide installation groove (300) is provided on the vibration damping block, and a guide rail (223) cooperating with the guide installation groove (300) is provided on the side of the side where the enclosure (220) is connected to the side plate (230) of the volute (210) and is away from the side plate (230). The guide rail (223) extends along the circumference of the enclosure (220), and the guide rail (223) can slide along the guide installation groove (300) and is sealed and connected to the guide installation groove (300).

18. A range hood, characterized in that: A chassis device comprising any one of claims 1 to 17.

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