A range hood

Abstract

The application discloses a kind of range hood, comprising: fume collecting hood, with the cavity of front opening;Opening and closing mechanism, at least part of the opening and closing mechanism is arranged in the cavity, the opening and closing mechanism can be moved between the extension outside the fume collecting hood and the retraction in the cavity, and air outlet is provided on the front of the opening and closing mechanism;And air supply mechanism, including air supply component, the air supply component is arranged on the opening and closing mechanism and is located behind the air outlet, the air supply component can be extended with the opening and closing mechanism outside the fume collecting hood or retracted in the cavity, and air inlet and air outlet are provided on the air supply component, and the air inlet is communicated with the air outlet through the air outlet.The range hood of the application has fan function, solves the problem that human body feels stuffy when cooking in closed kitchen.

Description

TECHNICAL FIELD

[0001] The present application relates to the kitchen electrical technology field, and particularly relates to a range hood. BACKGROUND

[0002] The range hood has become an indispensable electrical appliance for each cooking in a family. In the kitchen cooking process, in order to prevent the oil fume from expanding outward, the doors and windows are often closed, which leads to the inharmonious air circulation in the kitchen, and the human body feels hot and sweaty after the cooking. SUMMARY

[0003] The present application aims to at least solve one of the problems existing in the prior art, and for this purpose, the present application provides a range hood with a fan function, which solves the problem that the human body feels hot when cooking in a closed kitchen, and the air supply assembly is hidden in the smoke collecting hood when the range hood is closed.

[0004] According to the range hood provided above, the following technical scheme is adopted:

[0005] The range hood comprises a smoke collecting hood with a cavity opening forward, an opening and closing mechanism, at least part of the opening and closing mechanism being arranged in the cavity, the opening and closing mechanism being movable between extending out of the smoke collecting hood and retracting into the cavity, a front surface of the opening and closing mechanism being provided with an air outlet, and an air supply mechanism comprising an air supply assembly, the air supply assembly being arranged on the opening and closing mechanism and located behind the air outlet, the air supply assembly being movable with the opening and closing mechanism between extending out of the smoke collecting hood and retracting into the cavity, the air supply assembly being provided with an air inlet and an air outlet, and the air inlet being connected in communication with the air outlet through the air outlet.

[0006] In some embodiments, a lower smoke suction port is arranged on the front surface of the smoke collecting hood and located below the opening and closing mechanism, and / or the opening and closing mechanism has a smoke inlet cavity, or the opening and closing mechanism and the air supply mechanism enclose the smoke inlet cavity, an upper smoke suction port is arranged on the bottom of the opening and closing mechanism and is used for allowing the oil fume to pass through, the upper smoke suction port is connected in communication with the cavity through the smoke inlet cavity, and the upper smoke suction port is movable between extending out of the smoke collecting hood and retracting into the cavity.

[0007] In some embodiments, the air supply assembly comprises an air duct and an air supply piece with an air inlet, the air duct is arranged on the opening and closing mechanism and located behind the air outlet, a mounting cavity suitable for accommodating the air supply piece is arranged on the top or the side wall of the air duct, the air outlet is arranged on one side of the air duct facing the air outlet, the air supply piece is arranged in the mounting cavity, and the air supply piece is used for providing the air source for the air outlet.

[0008] In some embodiments, a plurality of micro-holes are provided at the top and / or bottom of the air duct, and the opposite ends of the micro-holes are respectively connected to the inside and outside of the air duct; and / or, a plurality of air guide portions are provided at the air outlet, and air vents are formed between adjacent air guide portions.

[0009] In some embodiments, the air supply assembly further comprises a fixing box, which is sleeved on the air duct and the air supply member and connected to the opening and closing mechanism, and the fixing box is provided with air vents corresponding to the positions of the air inlets and installation openings corresponding to the positions of the air outlets, and the air outlets are connected to the air outlets through the installation openings.

[0010] In some embodiments, the air supply mechanism further comprises a filter assembly, which is detachably connected to the air supply assembly and covers the air inlets in the orthographic projection.

[0011] In some embodiments, the air supply assembly is recessed with installation grooves corresponding to the positions of the air inlets, and the filter assembly is arranged in the installation grooves and hingedly or clippingly connected to one end of the air supply assembly and magnetically connected to the other end of the air supply assembly.

[0012] In some embodiments, the installation grooves are provided with oppositely arranged clamping grooves and magnetic members; and the filter assembly comprises an outer filter screen, one end of which is attracted to the magnetic members, and the other end is provided with outwardly extending clamping portions corresponding to the positions of the clamping grooves, and the clamping portions are inserted into the clamping grooves.

[0013] In some embodiments, the filter assembly further comprises an inner filter screen, which is detachably installed in the outer filter screen and arranged close to the air inlets, and is provided with a gap for the magnetic members to pass through corresponding to the positions of the magnetic members.

[0014] In some embodiments, the air supply mechanism further comprises an air outlet assembly, which comprises an air outlet baffle and a driver, the air outlet baffle is rotatably arranged at the air outlet, and the output end of the driver is connected to the air outlet baffle for driving the air outlet baffle to open or close the air outlet.

[0015] In some embodiments, the air supply mechanism further comprises an air outlet seat with an air outlet channel, the air outlet seat is transversely arranged in the air outlet and is sealingly connected to the front of the opening and closing mechanism and the air supply assembly, the inlet of the air outlet channel is connected to the air outlet, and the air outlet baffle is rotatably connected to the air outlet seat for opening or closing the outlet of the air outlet channel.

[0016] In some embodiments, wind-blocking walls are arranged at the left and right ends of the air outlet baffle respectively; and / or, a plurality of supports are arranged at intervals on the side of the air outlet baffle facing the air outlet seat, the air outlet seat is provided with a protruding portion at the position corresponding to the supports, and the protruding portion is rotationally connected with the supports through a connecting piece.

[0017] In some embodiments, the air outlet baffle comprises a connecting section and an air guide section fixedly connected with each other, and the connecting section is arranged at an obtuse angle with the air guide section.

[0018] In some embodiments, a blocking portion is arranged at the inside or the inlet of the air outlet channel, the blocking portion is provided with a plurality of small holes for airflow to pass through; and / or, the caliber of the air outlet channel gradually increases from the air supply port to the air outlet port.

[0019] In some embodiments, the air supply port is inserted into the air inlet section of the air outlet channel, a first sealing layer is arranged between the air supply port and the blocking portion, and / or a second sealing layer is arranged between the air supply port and the peripheral wall of the air outlet channel.

[0020] In some embodiments, a separation layer is arranged at the bottom of the air supply assembly, the separation layer comprises a heat insulation layer and / or a noise reduction layer.

[0021] Compared with the prior art, the present application has at least the following advantages:

[0022] 1. The range hood of the present application has a fan function by integrating the air supply mechanism on the opening and closing mechanism and arranging the air outlet on the front side of the opening and closing mechanism, which accelerates the air flow around the human body and reduces the surface temperature of the human body while cooking, thereby solving the problem that the human body feels hot when cooking in a closed kitchen.

[0023] 2. The air supply assembly of the air supply mechanism is designed to extend out of the smoke collecting hood or retract into the smoke collecting hood, which can make the air outlet closer to the human body when the range hood is working, reduce the influence of the range hood on the air outlet path and intensity, and improve the effect of the fan function, and when the range hood is closed, the air supply assembly is hidden inside the smoke collecting hood, thereby realizing maximum cleaning of the air inlet. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the range hood in the working state in the embodiment of the present application;

[0025] Figure 2 is a partial sectional view of the range hood in the working state in the embodiment of the present application;

[0026] Figure 3 is a structural schematic view of the range hood in the closed state in the embodiment of the present application;

[0027] Figure 4 is a structural diagram of the air supply assembly and the filter assembly in the embodiment of the present application;

[0028] Figure 5 is an exploded view of the air duct and the air outlet assembly in the embodiment of the present application;

[0029] Figure 6 is a sectional view of the air outlet mechanism in the embodiment of the present application;

[0030] Figure 7 is a structural diagram of the filter assembly in the embodiment of the present application;

[0031] Figure 8 is a sectional view of the filter assembly in the embodiment of the present application;

[0032] Figure 9 is a sectional view of the air outlet assembly in the embodiment of the present application Figure 1 ;

[0033] Figure 10 is a sectional view of the air outlet assembly in the embodiment of the present application Figure 2 ;

[0034] Figure 11 is a sectional view of the air outlet assembly in the embodiment of the present application Figure 3 ;

[0035] Figure 12 is a structural diagram of the air outlet baffle in the embodiment of the present application.

[0036] In the figure: 1 - smoke hood, 11 - cavity, 12 - smoke guide plate; 2 - opening and closing mechanism, 22 - smoke inlet cavity, 221 - upper smoke inlet; 3 - air supply assembly, 301 - air inlet, 302 - air outlet, 303 - mounting port, 304 - mounting groove, 31 - air duct, 311 - mounting cavity, 312 - micro hole, 313 - air guide part, 314 - air inlet, 32 - fixing box, 3201 - air duct bottom plate, 3202 - air duct fixing plate, 321 - clamping groove, 322 - magnetic part; 4 - filter assembly, 41 - outer filter screen, 410 - filter hole, 411 - clamping part, 412 - elastic sheet, 42 - inner filter screen, 421 - notch; 5 - air outlet assembly, 51 - air outlet baffle, 510 - transmission part, 511 - air blocking wall, 512 - support, 513 - connecting section, 514 - air guide section, 52 - driver, 53 - air outlet seat, 530 - perforation, 531 - air outlet channel, 5311 - bottom surface, 5312 - side surface, 532 - protruding part, 533 - blocking part, 5331 - small hole, 54 - connecting part, 55 - sealing part, 551 - first sealing layer, 552 - second sealing layer; 6 - separation layer. DETAILED DESCRIPTION

[0037] The following examples are used to illustrate the present application but should not be construed to limit the present application. Modifications on specific embodiments of the present application or equivalent replacements of some technical features without departing from the spirit of the present application should be included in the scope of the technical solutions claimed by the present application.

[0038] Example 1

[0039] With reference to Figures 1-4 The present embodiment provides a range hood, which comprises a smoke collecting cover 1 and an opening and closing mechanism 2. The smoke collecting cover 1 has a cavity 11 with a front opening. A smoke guide plate 12 is arranged on the front of the smoke collecting cover 1 below the front opening and is inclined upward and forward to guide the oil fume to flow upward. At least part of the opening and closing mechanism 2 is movably arranged in the cavity 11. The opening and closing mechanism 2 can move between extending out of the smoke collecting cover 1 and retracting into the cavity 11. An upper smoke inlet 221 is arranged at the bottom of the opening and closing mechanism 2 for the oil fume to pass through. The upper smoke inlet 221 is in communication with the cavity 11. The upper smoke inlet 221 can extend out of the smoke collecting cover 1 or retract into the cavity 11, so that the upper smoke inlet 221 is hidden inside the smoke collecting cover 1 when the range hood is closed, improving the appearance. It is particularly pointed out that, in order to further increase the unit smoke inlet area, a lower smoke inlet can be additionally arranged on the front of the smoke collecting cover 1 below the opening and closing mechanism 2, that is, at least one lower smoke inlet is arranged on the smoke guide plate 12.

[0040] Further, the range hood further comprises a air supply mechanism (not shown in the figure), which comprises an air supply assembly 3. The air supply assembly 3 is arranged on the opening and closing mechanism 2 and located behind the front of the opening and closing assembly 2. The air supply assembly 3 can extend out of the smoke collecting cover 1 or retract into the cavity 11 with the opening and closing mechanism 2. An air inlet (not shown in the figure) and an air outlet 302 are arranged on the air supply assembly 3, and the air inlet can retract into the cavity 11. An air outlet (not shown in the figure) is arranged at a position corresponding to the air outlet 302 on the front of the opening and closing mechanism 2. The air outlet is in communication with the air inlet through the air outlet 302. In the present embodiment, the air outlet is arranged on the upper end of the front of the opening and closing mechanism 2, so that the air outlet is away from the smoke inlet, avoiding affecting the smoke suction effect. Correspondingly, the air supply assembly 3 is arranged behind the air outlet, so that the air supply assembly 3 is located behind the upper end of the front of the opening and closing mechanism 2, avoiding affecting the smoke suction effect due to the arrangement of the air supply assembly 3.

[0041] It can be seen that the range hood has the functions of smoke suction and fan, by integrating the air supply assembly 3 on the opening and closing mechanism 2, and arranging the air outlet on the front of the opening and closing mechanism 2, when the range hood works, the air outlet and the air supply assembly 3 follow the opening and closing mechanism 2 to extend out of the smoke collecting hood 1, so that the air inlet on the air supply assembly 3 is exposed, the air inlet performance of the air supply assembly 3 is ensured, at the same time, the air outlet is closer to the human body, the influence of the range hood working on the air outlet path and strength is reduced, and the fan function effect is improved; when the range hood is closed, the air outlet and the air supply assembly 3 follow the opening and closing mechanism 2 to retract into the smoke collecting hood 1, so that the air supply assembly 3 and the air inlet thereof are hidden inside the smoke collecting hood 1, and the air inlet is kept clean to the maximum extent.

[0042] With reference to Figure 2 The air supply assembly 3 is arranged on the upper side of the rear end of the opening and closing mechanism 2 and connected with the opening and closing mechanism 2, in the embodiment, the air supply assembly 3 and the opening and closing mechanism 2 surround to form a smoke inlet cavity 22 which opens backward, of course, the smoke inlet cavity 22 can also be designed to be defined by the opening and closing mechanism 2 itself, and the smoke inlet 221 is connected with the cavity 11 through the smoke inlet cavity 22.

[0043] With reference to Figures 1-5 The air supply assembly 3 comprises an air duct 31 with an air flow channel and an air supply piece (not shown in the figure) with an air inlet, the air duct 31 is arranged on the upper side of the rear end of the opening and closing mechanism 2 and located behind the air outlet, in the embodiment, the top of the air duct 31 is respectively provided with two installation cavities 311 which are open at the top and suitable for accommodating the air supply piece, of course, the two installation cavities 311 can also be arranged on the left and right side walls of the air duct 31 respectively, and the two installation cavities 311 are respectively connected with the air flow channel. In addition, a air supply opening 302 which faces the air outlet and is connected with the air flow channel is arranged in the middle of the front of the air duct 31. An air supply piece is arranged in the installation cavity 311, the air supply piece is preferably a fan, and the air supply outlet thereof faces the air flow channel of the air duct 31, for providing air source for the air outlet through the air duct 31, and the total air outlet volume of the air supply assembly 3 can be increased through the cooperation of the two air supply pieces.

[0044] Further, a partition plate (not shown in the figure) can be additionally arranged in the middle of the air duct 31 in the left and right directions, the partition plate divides the air flow channel and the air supply opening 302 of the air duct 31 into two parts, and the two air supply pieces control the air outlet volumes of the two parts respectively, so that the adjustment range of the air outlet volume is larger. In addition, the top of the air duct 31 is designed to be inclined from the end to the middle and downward, so that the air duct 31 has a structure of small in the middle and large at both ends, at this time, the top of the air duct 31 can play a role of air guide, and air can be quickly guided to the air supply opening 302.

[0045] Further, a plurality of micro-holes 312 are arranged on the top and / or bottom of the air duct 31, and the opposite ends of the micro-holes 312 are connected with the inside and outside of the air duct 31 respectively. In the embodiment, the micro-holes 312 are densely arranged on the top and bottom of the air duct 31, so that the air inlet of the air duct 31 is ensured and the primary filtering effect is achieved. A plurality of air guide portions 313 are arranged on the air outlet 302 in the left-right direction, and the adjacent air guide portions 313 form air passages 314 for air passing through. The opposite ends of each air passage 314 are connected with the inside of the air duct 31 and the air outlet respectively.

[0046] In the embodiment, the air duct 31 includes a lower shell and an upper shell, and the upper and lower shells are detachably connected as a whole through a buckle structure, and the upper and lower shells are surrounded to form an air flow channel. The upper and lower shells are respectively provided with mounting cavities 311 at the left and right ends, and a plurality of micro-holes 312 are arranged on the upper and lower shells. The air outlet 302 is arranged on the middle of the front surface of the upper and / or lower shell. Thus, the air duct 31 is designed as a split structure, which is more convenient for processing and manufacturing.

[0047] Reference Figures 1-6 Further, the air supply assembly 3 further includes a fixing box 32, which is sleeved on the air duct 31 and the air supply member and connected with the opening and closing mechanism 2. At this time, the opening and closing mechanism 2 and the fixing box 32 are surrounded to form the smoke inlet cavity 22. The fixing box 32 is provided with an air passage 301 corresponding to the air inlet position, and the fixing box 32 is provided with a mounting port 303 corresponding to the position of the air outlet 302. The air outlet can be connected with the air outlet 302 through the mounting port 303. In the embodiment, the fixing box 32 includes an air duct bottom plate 3201 and an air duct fixing plate 3202, and the air duct bottom plate 3201 and the air duct fixing plate 3202 are detachably connected as a whole through screws or a buckle structure. The bottom surface of the air duct bottom plate 3201 serves as a flow guide surface arranged from front to back and upwardly inclined. The air duct fixing plate 3202 is provided with a bent portion 323 at the lower end of the left and right side walls, which is used for detachable connection with the opening and closing mechanism 2. Thus, the fixing box 32 is used to cover the air duct 31 and the air supply member, so as to avoid the air duct 31 and the air supply member from being polluted by the oil fume, and the oil fume can be quickly drained into the cavity 11. In addition, the noise of the air supply member can be expanded outwardly, so as to achieve the purpose of noise reduction.

[0048] Particularly, the air duct bottom plate 3201 can be used to replace the fixed box 32, at this time, the air duct bottom plate 3201 is arranged at the bottom of the air duct 31 and connected with the opening and closing mechanism 2, and the opening and closing mechanism 2 and the air duct bottom plate 3201 are surrounded to form the smoke inlet cavity 22. Of course, the air duct fixed plate 3202 can also be used to replace the fixed box 32, at this time, in order to avoid that the oil fume enters the inside of the air duct 31 through the micro holes 312 at the bottom of the air duct 31, a flow guide plate needs to be additionally arranged at the bottom of the air duct 31, the flow guide plate is arranged obliquely from front to back and upward, is used for guiding the oil fume to flow into the cavity 11, and is also used for preventing the oil fume from directly flowing upward to the bottom of the air duct 31.

[0049] Reference Figures 1-4 And Figures 7-8 Further, the air supply mechanism further comprises a filter assembly 4, the filter assembly 4 is detachably connected to the fixed box 32 of the air supply assembly 3, and the orthographic projection of the filter assembly 4 covers the air inlet, so as to achieve the effect of preliminarily filtering air. In the embodiment, the fixed box 32 of the air supply assembly 3 is recessed with a mounting groove 304 at the position corresponding to the air inlet, and a plurality of air vents 301 are arranged on the groove bottom surface of the mounting groove 304, so as to increase the unit air inlet area. The filter assembly 4 is arranged in the mounting groove 304, one end of the filter assembly 4 is hinged or clamped with the air supply assembly 3, and the other end is magnetically connected with the air supply assembly 3, so that the user can quickly replace the dirty filter assembly 4. It is particularly pointed out that when the air duct bottom plate 3201 is used to replace the fixed box 32, the mounting groove 304 is integrated on the air duct 31.

[0050] The mounting groove 304 is provided with oppositely arranged clamping grooves 321 and magnetic members 322, in the embodiment, the number of the clamping grooves 321 is two, and the two clamping grooves 321 are arranged on the rear groove walls of the mounting groove 304, and the magnetic member 322 is preferably a magnet and is fixedly installed on the front end of the groove bottom surface of the mounting groove 304 and located outside the air vent 301. The filter assembly 4 comprises an outer filter screen 41, the outer filter screen 41 is made of sheet metal, a plurality of filter holes 410 are uniformly distributed on the outer filter screen 41, so as to increase the unit air inlet area, one end of the outer filter screen 41 is attracted to the magnetic member 322, the other end is provided with an outwardly extending clamping portion 411 at the position corresponding to the clamping groove 321, and the clamping portion 411 is inserted into the clamping groove 321, so that the outer filter screen 41 can be quickly removed for cleaning or replacement without additional tools.

[0051] Further, the filtering assembly 4 further comprises an inner filtering net 42, which is preferably a honeycomb net of activated carbon, for adsorbing oil fume particles and odor, and is detachably installed in the outer filtering net 41 and arranged close to the air inlet, so that the inner filtering net 42 is connected with the outer filtering net 41 as a whole, facilitating quick dismounting and replacing the inner filtering net 42. In addition, the inner filtering net 42 is provided with a gap 421 at a position corresponding to the magnetic member 322, for allowing the magnetic member 322 to pass through, so as to avoid affecting the attraction effect of the outer filtering net 41 and the magnetic member 322 due to the setting of the inner filtering net 42.

[0052] In the present embodiment, the inner filtering net 42 is embedded in the outer filtering net 41 from bottom to top. In order to prevent the inner filtering net 42 from falling downward, a plurality of elastic pieces 412 are arranged at intervals in the peripheral wall of the outer filtering net 41, each of which is bent toward the bottom of the inner filtering net 42 and hooks the inner filtering net 42, so as to stably and reliably limit and fix the inner filtering net 42 in the outer filtering net 41 by the plurality of elastic pieces 412, and ensure that the inner filtering net 42 is easy to dismount. Of course, the inner filtering net 42 can also be designed not to be connected with the outer filtering net 41, in which case the inner filtering net 42 is tightly pressed in the mounting groove 304 by the outer filtering net 41.

[0053] Embodiment 2

[0054] Reference Figures 1-6 and Figures 9-12 The difference between the present embodiment and Embodiment 1 is that the air supply mechanism further comprises an air outlet assembly 5, which is arranged at the air outlet and connected with the opening and closing mechanism 2 and the air supply assembly 3, and the air supply port 302 of the air supply assembly 3 is in communication with the air outlet assembly 5, so that the air supply mechanism is controlled by the air outlet assembly 5 to control the on-off and air volume. The air supply assembly 3 and the air outlet assembly 5 are designed in a split manner and detachably connected, so that the manufacturing and installation are simple, and the air outlet assembly 5 is easy to maintain.

[0055] In the embodiment, the air outlet assembly 5 comprises an air outlet baffle 51, a driver 52 and an air outlet seat 53, the air outlet seat 53 is transversely arranged in the air outlet and is sealingly connected with the front surface of the opening and closing mechanism 2 and the air outlet of the air supply assembly 3 respectively, the air outlet seat 53 has an air outlet channel 531 for air flow, the inlet of the air outlet channel 531 is connected with the air outlet 302, and the outlet of the air outlet channel 531 is connected with the kitchen for providing air outlet for the kitchen. The air outlet baffle 51 is rotatably arranged at the outlet of the air outlet channel 531 and is connected with the air outlet seat 53 for opening or closing the outlet of the air outlet channel 531. The driver 52 is preferably a small torque small motor, which is fixedly installed on the air outlet seat 53, and the output end thereof is in transmission connection with the air outlet baffle 51 for driving the air outlet baffle 51 to rotate to open or close the outlet of the air outlet channel 531, and the air outlet baffle 51 can be automatically opened and closed through the switch of the range hood, and the angle can also be manually adjusted after the air outlet baffle 51 is opened. In other embodiments, the air outlet seat 53 can be omitted, and the air outlet baffle 51 is rotatably arranged at the air outlet and is used for opening or closing the air outlet, and the driver 52 is fixedly connected with the opening and closing mechanism 2 and is located behind the front surface of the opening and closing mechanism 2.

[0056] Reference Figure 12 At the left and right ends of the air outlet baffle 51, wind blocking walls 511 are arranged respectively, the wind blocking walls 511 are in the shape of "7" and can guide the air outlet direction to ensure uniform air outlet. The side of the air outlet baffle 51 facing the air outlet seat 53 is provided with a transmission part 510 and a plurality of supports 512 at intervals, the transmission part 510 is in transmission connection with the output end of the driver 52, and each support 512 is in rotary connection with the air outlet seat 53 through a connecting piece 54. Further, the air outlet baffle 51 comprises a connecting section 513 and a wind guiding section 514 which are fixedly connected, and the transmission part 510 and the supports 512 are integrally formed on the back surfaces of the wind guiding section 514 and the connecting section 513. Figure 10 The connecting section 513 and the wind guiding section 514 are arranged at an obtuse angle, and the included angle β2 therebetween is preferably 110-160°, and most preferably any one of 120°, 125° or 130°, when the air outlet baffle 51 is in the maximum opening position, the highest point of the air outlet baffle 51 is in clearance fit or abutment with the top surface of the air outlet channel 531, and the wind guiding section 514 is arranged at an acute angle with the top surface of the air outlet channel 531, and the included angle β1 therebetween is preferably 10-30°, and most preferably 20±5°, so that the air outlet angle can be adjusted.

[0057] Reference Figures 5-6 and Figures 9-11 The driver 52 is fixedly installed outside the air outlet channel 531 and is located behind the front surface of the air outlet seat 53, a through hole 530 is arranged on the front surface of the air outlet seat 53 corresponding to the transmission part 510, and the transmission part 510 passes through the through hole 530 from front to back and is connected with the output end of the driver 52.

[0058] The air outlet seat 53 is provided with a protruding part 532 corresponding to the position of the support 512 of the air outlet baffle 51, and at least part of the protruding part 532 is arranged in the air outlet channel 531. Each protruding part 532 is rotationally connected with the support 512 through a connecting piece 54 (such as a pin). Further, a blocking part 533 is arranged inside or at the entrance of the air outlet channel 531. The blocking part 533 is integrally formed inside the air outlet channel 531 and separates the air outlet channel 531 into an air inlet section and an air outlet section. A plurality of small holes 5331 are arranged on the blocking part 533 and are used for airflow. The air inlet section and the air outlet section are connected through the small holes 5331.

[0059] In the embodiment, the blocking part 533 is arranged vertically, the diameter of the small holes 5331 is preferably 4.5 mm, the spacing is preferably 5.5 mm, and all the small holes are uniformly arranged to play a uniform air outlet and protection role. In this way, through the blocking part 533 with a plurality of small holes 5331, without affecting the air outlet, first, it can prevent small animals such as cockroaches from entering the inside of the air supply assembly 3, and second, it plays a role of dispersing wind and uniform air to make the air outlet more uniform.

[0060] Further, the caliber of at least the air outlet section gradually increases from the air supply port 302 to the air outlet to form a flared structure. In this way, the air from the small holes 5331 can expand the air outlet angle and range through the flared structure, and improve the fan function effect. In the embodiment, the air outlet channel 531 has a bottom surface 5311, two side surfaces 5312, and a top surface. The bottom surface of the air inlet section is a flat surface or an inclined surface, and the bottom surface of the air outlet section is a downward inclined surface arranged from back to front and downwardly inclined. The included angle β3 between the downward inclined surface and the blocking part 533 is preferably 91-96°, as shown in Figure 10 . The side surface of the air inlet section is a vertical surface or an inclined surface, and the side surface of the air outlet section is a side inclined surface arranged from back to front and inclined to the outside of the air outlet channel 531. The included angle between the side inclined surface and the blocking part 533 is 98±5°, as shown in Figure 11 .

[0061] Referring to Figures 5-6The air outlet assembly 5 further comprises a sealing member 55 clamped between the air outlet base 53 and the air duct 31 to seal the air duct 31 to the air outlet base 53. In the embodiment, the sealing member 55 is annular and has an annular groove opening rearward. During installation, the sealing member 55 is first sleeved on the air outlet 302 of the air duct 31, and then is inserted into the air outlet channel 531 from the rear to the front and is inserted into the air inlet section of the air outlet channel 531 until the rear surface of the blocking portion 533 is abutted, at this time, the first sealing layer 551 is clamped between the air outlet 302 and the blocking portion 533, and the second sealing layer 552 is clamped between the air outlet 302 and the peripheral wall of the air outlet channel 531. Thus, through the sealing member 55, two sealing layers can be formed between the air duct 31 and the air outlet base 53, the sealing effect is further improved, and the abnormal sound between the air duct 31 and the air outlet base 53 can be eliminated.

[0062] Embodiment 3

[0063] Reference Figures 1-2 The difference between the embodiment and the embodiments 1 or 2 is that the embodiment further comprises a separation layer 6 arranged on the inner surface or the outer surface of the bottom of the air supply assembly 3. When the smoke inlet cavity 22 is formed by the opening and closing mechanism 2 and the fixed box 32 of the air supply assembly 3, the separation layer 6 is arranged on the inner surface of the bottom of the fixed box 32 of the air supply assembly 3, that is, the separation layer 6 is arranged between the air duct 31 and the air duct bottom plate 3201; when the smoke inlet cavity 22 is defined by the opening and closing mechanism 2 itself, the separation layer 6 can be arranged on the outer surface of the bottom of the fixed box 32, that is, the separation layer 6 is arranged on the bottom of the air duct bottom plate 3201.

[0064] Further, the separation layer 6 comprises a heat insulation layer and / or a noise reduction layer. The heat insulation layer is preferably tin foil paper, which can prevent the air temperature in the air duct 31 from rising due to heat transfer of high-temperature oil fume, thereby avoiding the influence of hot air on the air temperature in the air duct. The noise reduction layer is preferably sound-absorbing cotton, which can block the propagation of noise and achieve the purpose of noise reduction.

[0065] The above only describes some embodiments of the present application. Those skilled in the art can make several modifications and improvements without departing from the concept of the present application, which are all within the protection scope of the present application.

Claims

1. A range hood characterized by, The utility model relates to a smoke exhaust hood, comprising: a smoke exhaust hood (1) having a cavity (11) with a front opening, a smoke guide plate (12) being arranged below the front opening of the smoke exhaust hood (1) and being arranged from bottom to top and forwardly inclined; an opening and closing mechanism (2) being arranged at least partially in the cavity (11), the opening and closing mechanism (2) being movable between extending out of the smoke exhaust hood (1) and retracting into the cavity (11), and a wind outlet being arranged on the front of the opening and closing mechanism (2); and an air supply mechanism comprising an air supply assembly (3) being arranged on the opening and closing mechanism (2) and behind the wind outlet, the air supply assembly (3) being movable with the opening and closing mechanism (2) between extending out of the smoke exhaust hood (1) and retracting into the cavity (11), an air inlet and an air supply outlet (302) being arranged on the air supply assembly (3), the air inlet being connected with the wind outlet through the air supply outlet (302); the air supply assembly (3) comprising an air duct (31) and an air supply member having an air inlet, the air duct (31) being arranged on the opening and closing mechanism (2) and behind the wind outlet, a mounting cavity (311) being arranged on the top or sidewall of the air duct (31) and being adapted to accommodate the air supply member, the air supply outlet (302) being arranged on one side of the air duct (31) facing the wind outlet, and the air supply member being arranged in the mounting cavity (311) and being adapted to provide air source for the wind outlet; a plurality of micro-holes (312) being arranged on the top and / or bottom of the air duct (31), the opposite ends of the micro-holes (312) being connected with the inside and outside of the air duct (31) respectively; and / or, a plurality of air guide portions (313) being arranged at intervals at the air supply outlet (302), and air vents (314) being formed between adjacent air guide portions (313).

2. The range hood according to claim 1, characterized in that a lower smoke inlet being arranged on the front of the smoke exhaust hood (1) below the opening and closing mechanism (2); and / or, the opening and closing mechanism (2) having a smoke inlet cavity (22), or the opening and closing mechanism (2) and the air supply mechanism forming a smoke inlet cavity (22) together, and an upper smoke inlet (221) being arranged on the bottom of the opening and closing mechanism (2) and being adapted to pass through the smoke inlet cavity (22) and the cavity (11), and the upper smoke inlet (221) being movable between extending out of the smoke exhaust hood (1) and retracting into the cavity (11).

3. The range hood according to claim 1, wherein the air supply assembly (3) further comprising a fixing box (32) being sleeved on the air duct (31) and the air supply member and being connected with the opening and closing mechanism (2), the fixing box (32) being provided with an air vent (301) corresponding to the air inlet and being adapted to pass through air, and the fixing box (32) being provided with a mounting port (303) corresponding to the position of the air supply outlet (302), and the wind outlet being connected with the air supply outlet (302) through the mounting port (303).

4. The range hood according to any one of claims 1-3, characterized in that The air supply mechanism further comprises a filter assembly (4) which is detachably connected to the air supply assembly (3) and covers the air inlet in its orthogonal projection.

5. The range hood according to claim 4, wherein The air supply assembly (3) is concavely provided with a mounting groove (304) at the position corresponding to the air inlet, and the filter assembly (4) is arranged in the mounting groove (304) and is hingedly or clippingly connected to one end of the air supply assembly (3) and magnetically connected to the other end of the air supply assembly (3).

6. The range hood according to claim 5, wherein The mounting groove (304) is provided with oppositely arranged clamping grooves (321) and magnetic members (322); the filter assembly (4) comprises an outer filter screen (41), one end of which is attracted to the magnetic member (322), and the other end is provided with an outwardly extending clamping portion (411) at the position corresponding to the clamping groove (321), which is inserted into the clamping groove (321).

7. The range hood according to claim 6, wherein The filter assembly (4) further comprises an inner filter screen (42) which is detachably mounted in the outer filter screen (41) and arranged close to the air inlet, and is provided with a gap (421) at the position corresponding to the magnetic member (322) for the magnetic member (322) to pass through.

8. The range hood according to any one of claims 1-3, characterized in that The air supply mechanism further comprises an air outlet assembly (5) which comprises an air outlet baffle (51) and a driver (52), the air outlet baffle (51) is rotatably arranged at the air outlet, and the output end of the driver (52) is connected to the air outlet baffle (51) for driving the air outlet baffle (51) to open or close the air outlet.

9. The range hood according to claim 8, wherein The air supply mechanism further comprises an air outlet seat (53) with an air outlet channel (531), the air outlet seat (53) is transversely arranged in the air outlet and is sealingly connected to the front of the opening and closing mechanism (2) and the air supply assembly (3) respectively, the inlet of the air outlet channel (531) is connected to the air supply opening (302), and the air outlet baffle (51) is rotatably connected to the air outlet seat (53) for opening or closing the outlet of the air outlet channel (531).

10. The range hood according to claim 9, wherein The air outlet baffle (51) is provided with air blocking walls (511) at the left and right ends thereof respectively; and / or, the side of the air outlet baffle (51) facing the air outlet seat (53) is provided with a plurality of supports (512) at intervals, the air outlet seat (53) is provided with a protruding portion (532) at the position corresponding to the supports (512), and the protruding portion (532) and the supports (512) are rotatably connected through a connecting member (54).

11. The range hood according to claim 10, wherein The air outlet baffle (51) comprises a connecting section (513) and an air guiding section (514) which are fixedly connected, and the connecting section (513) and the air guiding section (514) are arranged at an obtuse angle.

12. The range hood according to claim 9, wherein The air outlet channel (531) is provided with a blocking portion (533) at the inside or the inlet thereof, the blocking portion (533) is provided with a plurality of small holes (5331) for airflow to pass through; and / or, the caliber of the air outlet channel (531) gradually increases from the air supply opening (302) to the air outlet.

13. The range hood according to claim 12, wherein, The air supply outlet (302) is inserted into the air inlet section of the air outlet channel (531), a first sealing layer is clamped between the air supply outlet (302) and the blocking part (533), and / or a second sealing layer is clamped between the air supply outlet (302) and the peripheral wall of the air outlet channel (531).

14. The range hood according to any one of claims 1-3, characterized in that A separation layer (6) is arranged at the bottom of the air supply assembly (3), and the separation layer (6) comprises a heat insulation layer and / or a noise reduction layer.

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