WO2017041415A1 - 吸油烟机 - Google Patents

吸油烟机 Download PDF

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Publication number
WO2017041415A1
WO2017041415A1 PCT/CN2016/072147 CN2016072147W WO2017041415A1 WO 2017041415 A1 WO2017041415 A1 WO 2017041415A1 CN 2016072147 W CN2016072147 W CN 2016072147W WO 2017041415 A1 WO2017041415 A1 WO 2017041415A1
Authority
WO
WIPO (PCT)
Prior art keywords
volute
side wall
fixed side
wall portion
range hood
Prior art date
Application number
PCT/CN2016/072147
Other languages
English (en)
French (fr)
Inventor
蒋济武
白雅丽
顾卓淳
宋祖龙
Original Assignee
广东美的厨房电器制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201510567831.1A external-priority patent/CN105090121B/zh
Priority claimed from CN201510567834.5A external-priority patent/CN105091057B/zh
Priority claimed from CN201520696646.8U external-priority patent/CN204987167U/zh
Priority claimed from CN201510567942.2A external-priority patent/CN105091058B/zh
Priority claimed from CN201520692044.5U external-priority patent/CN205026772U/zh
Priority claimed from CN201520692540.0U external-priority patent/CN205102206U/zh
Priority claimed from CN201520692664.9U external-priority patent/CN204985080U/zh
Priority claimed from CN201520691529.2U external-priority patent/CN205026771U/zh
Priority claimed from CN201520696670.1U external-priority patent/CN204987168U/zh
Priority to EP16843359.7A priority Critical patent/EP3348912B1/en
Application filed by 广东美的厨房电器制造有限公司, 美的集团股份有限公司 filed Critical 广东美的厨房电器制造有限公司
Publication of WO2017041415A1 publication Critical patent/WO2017041415A1/zh
Priority to US15/893,318 priority patent/US10578316B2/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2021—Arrangement or mounting of control or safety systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2071—Removing cooking fumes mounting of cooking hood
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2078—Removing cooking fumes movable
    • F24C15/2092—Removing cooking fumes movable extendable or pivotable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes

Definitions

  • the invention relates to the field of kitchen appliances, in particular to a range hood.
  • the range hood can be exhausted indoors and exhausted to the outside, when the indoor exhaust is exhausted, the inner circulation duct is too long, resulting in a large loss of air volume and wind pressure, and the smoke of the double fan.
  • the left and right dimensions of the machine are large and the cost is high; since the switching plate is opened and closed in the direction of the spiral of the volute, in the closed state, the wind pressure in the volute duct will lift the moving shell, especially in the high-grade wind pressure. At the time of the connection gap, a high-frequency airflow whistle appears and the sound quality is poor.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, the present invention proposes a range hood having a short flow distance of air when exhausted indoors.
  • a range hood comprising: a hood casing, the hood of the hood is provided with a venting air outlet and a venting vent; and a volute, the volute being at least partially disposed at a volute duct is disposed in the volute casing, and the volute is provided with a volute air inlet and a volute air outlet communicating with the hood exhaust vent, the volute including the fixed a shell portion and a moving shell portion movable relative to the fixed shell portion between a closed position and an open position, wherein the fixed shell portion and the movable shell portion are in the closed position
  • the moving shell portion cooperates and allows wind in the volute duct to be discharged from the volute air vent, the moving shell portion being opposite to the fixed shell when the moving shell portion is in the open position Staggered to define a volute circulation air outlet communicating with the venting air outlet of the hood between the moving shell portion and the fixed shell portion, thereby allowing the wind in the volute duct to pass through the
  • the hood can be provided with a fixed casing portion and a moving casing portion, and the moving casing portion can be moved relative to the fixed casing portion to move between the open position and the closed position, so that the range hood can have The function of discharging air into the room and discharging the wind to the outside.
  • the wind in the volute air passage can directly flow through the volute circulation air outlet to the circulating air outlet of the hood, which can effectively shorten the flow distance of the wind when the range hood discharges air into the room, and can at least To some extent, reduce the loss of air volume and wind pressure, and improve the efficiency of the range hood to discharge indoors.
  • range hood according to the present invention may also have the following technical features:
  • the fixed case portion includes: a substrate portion, the volute air inlet is formed on the substrate portion; and a fixed side wall portion is fixedly disposed on the substrate portion And surrounding the volute air inlet, wherein the moving shell portion is adjustable relative to the fixed side wall portion to be in the open position when the moving shell portion is The volute circulation air outlet is defined between the fixed side wall portions.
  • the moving shell portion and the fixed side wall portion are smoothly connected in the extending direction of the volute duct when the moving shell portion is in the closed position.
  • the profile of the moving shell portion is on the same helix as the profile of the fixed sidewall portion when the moving shell portion is in the closed position.
  • the fixed side wall portion includes: a first fixed side wall portion and a second fixed side wall portion, the first fixed side wall portion being spaced apart from the second fixed side wall portion,
  • the moving shell portion is disposed between the first fixed side wall portion and the second fixed side wall portion, and at both ends of the moving shell portion when the moving shell portion is in the closed position Connecting the first fixed side wall portion and the second fixed side wall portion respectively to make the first fixed side wall portion, the moving shell portion and the second fixed side wall portion in the worm
  • the shell duct is continuous in the extending direction.
  • the volute air vent is defined between a free end of the first fixed side wall portion and a free end of the second fixed side wall portion.
  • the moving shell portion is pivotable relative to the fixed side wall portion about a pivot axis.
  • the pivot shaft is disposed on the second fixed side wall portion, the pivot end of the moving shell portion is coupled to the pivot shaft and the other end is opposite to the first fixed side wall
  • the mating ends of the portions are adjacent, and the mating end of the first fixed side wall portion is an end opposite to the free end of the first fixed side wall portion.
  • the first fixed side wall portion is an arcuate wall and the opening faces the second fixed side wall portion, and the second fixed side wall portion is formed into a substantially flat plate structure.
  • the fixed side wall portions are two and symmetrically distributed on the substrate portion, and the openings of the first fixed side wall portions of the two fixed side wall portions face each other, and two The fixed side wall portions share the same second fixed side wall portion.
  • the volute circulation air outlet is located on a front side of the second fixed side wall portion, and the volute air outlet is located at a rear side of the second fixed side wall portion,
  • the volute air inlets are respectively located on the left and right sides of the second fixed side wall portion.
  • the method further includes: a wind wheel assembly at least partially disposed within the volute duct and including a wind wheel and a drive motor, the moving shell portion and the wind wheel
  • the closest distance L satisfies the relationship: 5 mm ⁇ L ⁇ 30 mm.
  • the moving shell portion is rotatable relative to the fixed shell portion by a pivot axis, the pivoting end of the moving shell portion is connected to the pivot shaft and the other end is a free end, the movement The free end of the shell is closest to the wind wheel.
  • the range hood further includes: a wind wheel assembly and a first limit device, the wind wheel An assembly is at least partially disposed within the volute duct and includes a rotor and a drive motor, the first stop disposed on the fixed housing and between the wind wheel and the moving housing.
  • the range hood further includes: a second limiting device disposed on the fixed casing portion and located outside the moving casing portion.
  • the range hood further includes: a retaining device configured to retain the moving shell portion in the open position.
  • the range hood further includes: a switching drive configured to drive the moving housing portion to move toward the open position.
  • the switching drive device includes a switching push plate that is configured to drive the moving housing portion to move toward the open position.
  • the switching drive device further includes: switching a pusher, at least a portion of the switching pusher being exposed outside the volute and connected to the switching push plate.
  • the switching pusher includes: a link portion and a handle portion, the handle portion is exposed outside the volute, the link portion is fixed on the handle portion and is switched Pushpads are connected.
  • the switching push plate is provided with an air guiding surface for guiding the circulating air discharged from the volute exhaust vent of the volute.
  • the moving shell portion is reset from the open position to the closed position by wind pressure within the volute duct.
  • the volute includes: a fixed case portion including a substrate portion and a plurality of fixed side wall portions, the volute air inlets being formed on the substrate portion, each The fixed side wall portion is fixedly disposed on the substrate portion and surrounds the corresponding volute air inlet; the plurality of moving shell portions, the plurality of moving shell portions corresponding to the plurality of fixed side wall portions, and Each of the moving shell portions is movable relative to a fixed side wall portion thereof between a closed position and an open position, wherein the moving shell portion is opposite to the movable shell portion when in the open position
  • the fixed side wall portions are staggered to define a volute circulation air outlet between the moving shell portion and the fixed side wall portion, the volute circulation air outlet being arranged to allow wind in the volute duct to pass through
  • the indoor hood further includes: a switching drive device, the switching drive device configured to drive the plurality of moving shell portions to synchronously move, thereby moving the plurality of moving shell portions synchronously to the opening position.
  • the switching drive device includes: a switching push plate, the switching push plate is configured to drive two of the moving shell portions to move synchronously to the open position; and switch the push hand, the switching At least a portion of the pusher is exposed outside the volute and connected to the switching push plate, the switch pusher includes: a link portion and a handle portion, the handle portion is exposed outside the volute, the link portion It is fixed on the handle portion and connected to the switching push plate.
  • the venting air outlet of the hood is disposed above the ventilating air outlet of the volute On the hood of the hood.
  • the hood casing includes: a straight top wall portion and a slanted top wall portion, the slanted top wall portion is disposed on a front side of the straight top wall portion, and the flat The straight top wall portion extends from the rear to the front, and the hood circulating air outlet is disposed on the inclined top wall portion at a boundary between the inclined top wall portion and the flat top wall portion.
  • the hood circulation vent is disposed adjacent the volute circulation vent.
  • the range hood further includes a closure structure configured to open or close the hood exhaust vent.
  • the range hood further includes an air inlet screen disposed at the volute air inlet.
  • FIG. 1 is an exploded view of a range hood according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a volute of a range hood with a wind wheel assembly according to an embodiment of the present invention
  • Figure 3 is a perspective view of a volute of a range hood according to an embodiment of the present invention.
  • FIG. 4 is an exploded view of a volute and a wind wheel assembly in accordance with an embodiment of the present invention
  • Figure 5 is a schematic structural view of a volute of a range hood according to an embodiment of the present invention.
  • Figure 6 is a cross-sectional view of a volute of a range hood according to an embodiment of the present invention.
  • Figure 7 is an enlarged view of a region A in Figure 6;
  • Figure 8 is a partial cross-sectional view of a range hood according to an embodiment of the present invention, with the moving shell portion in an open position;
  • Figure 9 is a partial cross-sectional view of a range hood according to an embodiment of the present invention, with the moving shell portion in an open position;
  • Figure 10 is a plan view of a wind wheel assembly and a volute of a range hood according to an embodiment of the present invention
  • Figure 11 is an enlarged view of a region B in Figure 10.
  • Range hood 1000
  • a hood housing 100 a ventilating circulating air outlet 101; a hood exhaust vent 102; a straight top wall portion 103; a sloping top wall portion 104;
  • Wind wheel assembly 300 Wind wheel assembly 300; wind wheel 301; drive motor 302;
  • a first limiting device 400 a second limiting device 500;
  • Switching drive device 700 switching push plate 710; air guiding surface 711; switching push hand 720; link portion 721; handle portion 722; chute 730;
  • Head structure 800 air inlet filter 900;
  • a range hood 1000 according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
  • the range hood 1000 may include a hood casing 100 and a volute casing 200.
  • the hood casing 100 is provided with a hood circulation air outlet 101 and a hood air outlet 102.
  • the venting circulating air outlet 101 is located at the front side of the ventilating air outlet 102.
  • the volute 200 is at least partially disposed within the hood housing 100, wherein, optionally, the volute 200 may be integrally disposed within the hood housing 100 such that the hood housing 100
  • the volute 200 can be better protected.
  • the volute 200 has a volute duct 210.
  • the volute 200 is provided with a volute air inlet 220 and a volute air outlet 230 communicating with the hood air outlet 102.
  • the 200 includes a fixed housing portion 240 and a moving housing portion 250 that is movable relative to the fixed housing portion 240 between a closed position A1 and an open position A2.
  • the fixed shell portion 240 cooperates with the moving shell portion 250 and allows the wind in the volute duct 210 to be discharged from the volute exhaust port 230.
  • the moving shell portion 250 is in the open position A2
  • the moving shell portion 250 is offset from the fixed shell portion 240 to define a volute that communicates with the hood circulating air outlet 101 between the moving shell portion 250 and the fixed shell portion 240.
  • the tuyere 260 allows the wind in the volute duct 210 to be sequentially discharged into the room through the volute circulation air outlet 260 and the hood circulation air outlet 101.
  • the range hood 1000 may further include: a head structure 800, a head structure 800 is configured to open or close the hood exhaust vent 102. It will be appreciated that the closure structure 800 encloses the hood exhaust vent 102 when the hood vent 102 needs to be closed.
  • the hood exhaust vent 102 may be an end cap structure, the end cap structure is provided with a thread, and the side wall of the hood exhaust vent 102 is provided with a thread corresponding to the thread on the end cap structure, so that the end The lid structure can be screwed to the hood air outlet 102.
  • the ventilating air outlet 101 of the hood can be distributed along the longitudinal direction of the hood casing 100 (i.e., the left-right direction shown in Fig. 8).
  • the ventilating air outlet 101 of the hood is in a normally open state, and when the moving shell portion 250 is in the closed position A1, the wind in the volute duct 210 cannot flow through the volute vent 260 to the hood to circulate.
  • the upper end cap of the wind wheel assembly 300 can rest against the inner surface of the hood housing 100 such that the volute 200, the wind wheel assembly 300, and the hood housing 100 define an annular volute duct 210.
  • the wind in the volute duct 210 can be directly discharged through the volute circulating air outlet 260 directly to the volute duct 210, and the wind discharged from the volute duct 210 can pass directly.
  • the ventilating air outlet 101 of the hood is discharged into the room. Therefore, when the range hood 1000 exhausts air into the room, the flow distance of the wind in the volute 200 is short, so that the loss of the air volume and the wind pressure can be reduced at least to some extent, and the efficiency of the range hood 1000 discharging into the room can be improved.
  • the hood circulation air outlet 101 may be disposed on the hood casing 100 located above the volute circulation vent 260.
  • the arrow indicates the flow direction of the wind in the range hood 1000. It can be seen that the wind flowing out from the volute outlet vent 260 is discharged forward, since the ventilating outlet vent 101 is located at the volute circulation vent 260. The front upper side, so that the wind can flow directly forward and upward, so that the flow speed of the wind can be maintained, thereby improving the discharge efficiency of the range hood 1000.
  • the hood circulation air outlet 101 may be disposed adjacent to the volute circulation air outlet 260. Thereby, the flow distance from the wind circulatory air outlet 260 to the hood circulation air outlet 101 can be further shortened, and the efficiency of the range hood 1000 discharging air into the room can be improved.
  • the hood casing 100 may include a straight top wall portion 103 and a slanted top wall portion 104, and the slanting top wall portion 104 is disposed at the flat top wall portion 103.
  • the front side, and the straight top wall portion 103 extends from the rear to the front, and the hood circulation air outlet 101 may be disposed on the inclined top wall portion 104 at the boundary between the inclined top wall portion 104 and the flat top wall portion 103.
  • the wind discharged from the venting air outlet 101 of the hood can flow upward and forward, thereby preventing the wind from flowing upward directly, further speeding up the diffusion of the wind in the room, accelerating the indoor temperature, and improving the user experience. .
  • the range hood 1000 may further include: an air inlet filter 900 disposed at the volute air inlet 220.
  • the wind wheel assembly 300 is at least partially disposed within the volute duct 210, and the wind wheel assembly 300 includes a wind wheel 301 and a drive motor 302.
  • the drive motor 302 may be disposed on the volute 200, the wind wheel 301 is buckled on the outside of the drive motor 302, and the wind wheel 301 is coupled to the drive motor 302.
  • the wind wheel 301 can draw air from the volute air inlet 220 such that wind enters the volute duct 210 and flows within the volute duct 210.
  • the range hood 1000 by arranging the volute 200 as the fixed case portion 240 and the moving case portion 250, and the moving case portion 250 can be moved relative to the fixed case portion 240 to be in the open position A2 and the closed position A1
  • the movement is made such that the range hood 1000 has a function of exhausting air to the room and exhausting air to the outside.
  • the wind in the volute duct 210 can directly flow through the volute circulation air outlet 260 to the ventilating air outlet 101 of the hood, which can effectively shorten the wind when the range hood 1000 exhausts indoors.
  • the flow distance can be reduced at least to some extent
  • the loss of low air volume and wind pressure improves the efficiency of the range hood 1000 discharging indoors.
  • volute 200 of the range hood 1000 according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
  • the fixed case portion 240 may include a substrate portion 241 and a fixed side wall portion 242.
  • the volute air inlet 220 is formed on the substrate portion 241
  • the fixed side wall portion 242 may be fixedly disposed on the substrate portion 241
  • the fixed side wall portion 242 surrounds the volute air inlet 220.
  • the fixed side wall portion 242 may be integrally formed with the substrate portion 241, and the fixed shell portion 240 of the integrally formed structure has a simple structure and high strength, and the mounting process of the fixed side wall portion 242 and the substrate portion 241 may be omitted.
  • the position of the moving shell portion 250 relative to the fixed side wall portion 242 is adjustable to define a volute circulation air outlet 260 between the moving shell portion 250 and the fixed side wall portion 242 when the moving shell portion 250 is in the open position A2.
  • the moving shell portion 250 and the fixed side wall portion 242 are smoothly connected in the extending direction of the volute duct 210.
  • the extending direction of the volute duct 210 is the direction of the arrow in the volute duct 210 shown in FIG. 10, and the extending direction of the volute duct 210 mentioned hereinafter is quasi.
  • the smoothly connecting moving shell portion 250 and the fixed side wall portion 242 can reduce the resistance of the volute 200 to the wind in the volute duct 210, and further reduce the noise generated between the wind and the volute 200. It is also possible to prevent, at least to some extent, the moving of the moving shell portion 250 from the closed position A1 and the passage of the wind through the volute circulation outlet 260.
  • the profile of the moving shell portion 250 is on the same spiral line as the contour of the fixed side wall portion 242.
  • the profile of the moving shell portion 250 may be formed on the inner surface of the moving shell portion 250 facing the wind wheel assembly 300
  • the profile of the fixed side wall portion 242 may be formed on the inner surface of the fixed side wall portion 242 facing the wind wheel assembly 300.
  • the fixed side wall portion 242 may include: a first fixed side wall portion 243 and a second fixed side wall portion 244, the first fixed side wall portion 243 and the second fixed portion
  • the side wall portions 244 are spaced apart, the moving shell portion 250 is disposed between the first fixed side wall portion 243 and the second fixed side wall portion 244, and when the moving shell portion 250 is in the closed position A1, the two shell portions 250 are moved
  • the ends are respectively connected to the first fixed side wall portion 243 and the second fixed side wall portion 244 to extend the first fixed side wall portion 243, the moving fixed shell portion 250 and the second fixed side wall portion 244 at the volute duct 210 Continuous in the direction.
  • the mating end 245 of the first fixed side wall portion 243 may be provided with an inclined guiding edge for overlapping the free end of the moving shell portion 250, and the free end of the moving shell portion 250 may be provided with the inclined guiding edge.
  • the inclined side can be made such that when the moving shell portion 250 is at the closed position A1, the first fixed side wall portion 243 and the moving shell portion 250 are smoothly connected, and the connection relationship is stabilized.
  • the free end of the first fixed side wall portion 243 and the free end of the second fixed side wall portion 244 A volute exhaust vent 230 is defined therebetween.
  • the free end of the first fixed side wall portion 243 is the rear end of the first fixed side wall portion 243 shown in FIG. 5, and the free end of the second fixed side wall portion 244 is the second fixed side wall portion 244 shown in FIG. The back end.
  • volute exhaust vent 230 is disposed toward the rear
  • the hood exhaust vent 102 can be disposed above the volute exhaust vent 230
  • the range hood 1000 is mounted on the wall of the room, when the volute duct 210
  • the wind flows upward until it is discharged from the hood exhaust port 102 to the outside under the limitation of the wall and the volute 200.
  • the moving housing portion 250 can be pivotable relative to the fixed side wall portion 242 about the pivot axis 251.
  • the pivot shaft 251 is disposed on the second fixed side wall portion 244, the pivot end 252 of the moving shell portion 250 is coupled to the pivot shaft 251, and the other end of the moving shell portion 250 is engaged with the first fixed side wall portion 243.
  • the end 245 is adjacent, and the mating end 245 of the first fixed side wall portion 243 is an end opposite to the free end of the first fixed side wall portion 243. As shown in FIG.
  • the range hood 1000 may further include a pressing plate 253 that can mount the pivot end 252 of the moving casing portion 250 at the position of the pivot shaft 251 of the second fixed side wall portion 244, so that the movement can be made
  • the shell portion 250 is rotated about the pivot axis 251 between the open position A2 and the closed position A1.
  • the first fixed side wall portion 243 may be an arcuate wall, and the opening of the first fixed side wall portion 243 faces the second fixed side wall portion 244, and the second fixed side wall portion 244 may be formed. It is a general flat structure.
  • the fixed side wall portions 242 may be two, and the two fixed side wall portions 242 are symmetrically distributed on the substrate portion 241, and the first fixed side walls of the two fixed side wall portions 242 are fixed.
  • the openings of the portions 243 face each other, and the two fixed side wall portions 242 share the same second fixed side wall portion 244.
  • the volute 200 may be provided with two moving shell portions 250, each of which is disposed between the corresponding first fixed side wall portion 243 and the second fixed side wall portion 244.
  • the volute circulation air outlet 260 may be located on the front side of the second fixed side wall portion 244, and the volute air outlet 230 may be located on the rear side of the second fixed side wall portion 244.
  • the tuyes 220 are respectively located on the left and right sides of the second fixed side wall portion 244.
  • the volute 200 may be formed with two volute ducts 210 through two fixed side wall portions 242 and two moving shell portions 250, and the two volute ducts 210 are respectively located at the second fixed side wall portion. Left and right sides of 244.
  • the two volute ducts 210 do not interfere with each other, and can independently enter the air through the corresponding volute air inlet 220, and can also exhaust the air through the corresponding volute air outlet 230 and the hood air outlet 102. And exhausting air into the room through the corresponding volute circulation air outlet 260 and the hood circulating air outlet 101.
  • the closest distance L of the moving shell portion 250 to the wind wheel 301 may satisfy the relationship: 5 mm ⁇ L ⁇ 30 mm.
  • the closest distance of the moving shell portion 250 to the wind wheel 301 that is, the moving shell portion 250 is shifted between the shell portion 250 and the first fixed side wall portion 243 at the open position A2, and is at the maximum offset distance. Understandable Yes, when the range hood 1000 is in operation, the distance between the moving shell portion 250 and the wind wheel 301 will cause the pressure of the wind in the volute duct 210 to fail to press the moving shell portion 250 back to the closed position A1, moving the shell portion 250.
  • L may further satisfy the relationship: 5 mm ⁇ L ⁇ 15 mm.
  • the moving shell portion 250 may be rotatable relative to the fixed shell portion 240 by the pivot shaft 251.
  • the pivot shaft 251 is disposed on the second fixed side wall portion 244, the pivot end 252 of the moving shell portion 250 is coupled to the pivot shaft 251, and the other end of the moving shell portion 250 is At the free end, the free end of the moving shell portion 250 is closest to the wind wheel 301.
  • the distance between the free end of the moving shell portion 250 and the mating end 245 of the first fixed side wall portion 243 of the fixed side wall portion 242 is large, so that the volute can be made when the moving shell portion 250 is in the open position A2
  • the opening of the circulating air outlet 260 is large, and the air volume of the air outlet 260 can be ensured through the volute, and the working efficiency of the range hood 1000 can be further ensured.
  • the volute 200 may further include: a first limiting device 400 disposed on the fixed shell portion 240 and located on the wind wheel 301 and moving Between the shell portions 250.
  • a first limiting device 400 disposed on the fixed shell portion 240 and located on the wind wheel 301 and moving Between the shell portions 250.
  • the free end of the moving shell portion 250 can stop on the first limiting device 400, and the first limiting device 400 can function to isolate the moving shell portion 250 and the wind wheel 301.
  • the function and the minimum distance between the moving shell portion 250 and the wind wheel 301 can be ensured, so that the normal operation of the range hood 1000 can be ensured.
  • the first limiting device 400 may adsorb the moving shell portion 250 in the open position A2 by magnetic action.
  • the moving shell portion 250 may be a ferrous or electromagnetic member, and the first limiting device 400 may be a magnet.
  • the first limiting device 400 may generate suction. The moving shell portion 250 is attracted thereto so that the moving shell portion 250 is held at the open position A2.
  • the first limiting device 400 is a limiting protrusion, and when the moving shell portion 250 is in the open position A2, the moving shell portion 250 abuts against the limiting protrusion.
  • the limiting protrusion may be integrally formed with the base portion 241 of the volute 200.
  • the volute 200 may further include: a second limiting device 500, the second limiting device 500 is disposed on the fixed shell portion 240, and the second limiting device 500 Located outside the moving shell portion 250.
  • the second limiting device 500 can be integrally formed with the substrate portion 241 of the fixed shell portion 240. Specifically, when the moving shell portion 250 moves relative to the fixed shell portion 240 to the closed position A1, the fixed shell portion 240 cooperates with the moving shell portion 250 and allows the wind in the volute duct 210 to be discharged from the volute exhaust port 230, and The second limiting device 500 stops the outer surface of the moving shell portion 250.
  • the second limiting device 500 can be a limiting rib, and the limiting rib is curved.
  • the moving shell portion 250 When the moving shell portion 250 is in the closed position A1, the moving shell portion 250 can abut against the limiting rib. So that it can be prevented at least to some extent
  • the pressure of the wind in the volute duct 210 presses the moving shell portion 250 outward from the closed position A1, so that the moving shell portion 250 can be kept in the closed position A1, the noise of the range hood 1000 can be reduced, and the range hood can be improved. 1000 working reliability.
  • the volute 200 may further include a retaining device (not shown) that is configured to hold the moving shell portion 250 in the open position A2. It will be appreciated that the retaining device can define the moving housing portion 250 in the open position A2. The moving shell portion 250 is reset from the open position A2 to the closed position A1 by the wind pressure in the volute duct 210.
  • the range hood 1000 since the range hood 1000 has a function of exhausting indoors and exhausting to the outside, when the indoor temperature is low, the user can set the range hood 1000 to exhaust indoors as needed.
  • the hood 1000 is required to maintain the volute circulation vent 260 in a normally open state, and the holding device can achieve this function.
  • the holding device it is possible to facilitate the user to control the exhaust state of the range hood 1000, and the user experience can be improved.
  • the volute 200 may further include a switching drive device 700 that is configured to drive the moving housing portion 250 to move toward the open position A2.
  • the holding device is integrated on the switching drive device 700.
  • the switching drive 700 integrated with the retaining device may have the function of driving the moving housing portion 250 and may also have the function of maintaining the moving housing portion 250 in the open position A2.
  • the holding device and the switching drive device 700 are compact in structure, occupy small space, and are easy to operate.
  • the retaining device may be a snap that is adapted to snap to the fixed housing portion 240 when the moving housing portion 250 is in the open position A2 to keep the moving housing portion 250 open.
  • Position A2 It can be understood that the base portion 241 of the fixed shell portion 240 can be provided with a card slot that cooperates with the buckle.
  • the switching drive device 700 drives the moving shell portion 250 to rotate to the open position A2
  • the buckle can be snapped into the card slot. In this way, the substrate portion 241 can hold the moving casing portion 250 in the open position A2 by limiting the degree of freedom of the switching drive device 700.
  • the retaining means may be a threaded fastener adapted to be threaded to the fixed shell portion 240 to move when the moving shell portion 250 is in the open position A2
  • the shell portion 250 is held in the open position A2.
  • the screw holes can be disposed on the substrate portion 241 of the switching driving device 700 and the fixed casing portion 240, and the screw holes of the switching driving device 700 and the screw holes on the substrate portion 241 overlap in the vertical direction, and the threaded fasteners
  • the screw holes on the switching drive device 700 and the screw holes on the substrate portion 241 may be sequentially passed to fix the switching drive device 700 on the substrate portion 241, so that the moving case portion 250 can be held in the open position A2.
  • the holding device may be an elastic protrusion
  • the fixing shell portion 240 may be provided with a card slot
  • the elastic protrusion is adapted to be elastic when the moving shell portion 250 is in the open position A2. It is received in the card slot to hold the moving housing portion 250 in the open position A2. It can be understood that when the switching driving device 700 drives the moving housing portion 250 to rotate to the open position A2, the elastic protrusion can be elastically inserted into the card slot, so that the substrate portion 241 can be switched by restriction. The degree of freedom of the drive device 700 maintains the moving housing portion 250 in the open position A2.
  • the retaining means is fixedly disposed on the fixed casing portion 240, and the retaining means adsorbs the moving casing portion 250 in the open position A2 by magnetic action.
  • the holding device is a magnet
  • the moving shell portion 250 may be provided with a magnetic member that can be magnetically attracted by the magnet.
  • the moving shell portion 250 may be a metal piece or an electromagnetic member, and the holding device may hold the moving shell portion 250 in the open position A2 by suction.
  • the switching drive device 700 can include a switching push plate 710 that is configured to drive the moving housing portion 250 to move toward the open position A2. Wherein, a part or an end surface of the switching push plate 710 can abut against the outer surface of the moving shell portion 250, so that when the switching push plate 710 moves, the switching push plate 710 can drive the moving shell portion 250 to the open position in the closed position A1. A2 moves.
  • the switching driving device 700 may further include: switching the pushing hand 720, at least a portion of the switching pushing hand 720 is exposed outside the volute 200, and the switching push hand 720 is connected to the switching push plate 710. That is, the user can control the movement of the switching push plate 710 by operating the switching pusher 720 to cause the switching push plate 710 to move the moving shell portion 250.
  • the switching push plate 710 and the switching push hand 720 can be a split structure, thereby facilitating the assembly of the range hood 1000 and improving the production efficiency of the range hood 1000.
  • the user can switch the pusher 720 by switching the pusher 720 to expose a part of the outside of the volute 200.
  • the switching pusher 720 may include a link portion 721 and a handle portion 722, the handle portion 722 is exposed outside the volute 200, the link portion 721 is fixed to the handle portion 722, and the link portion 721 It is connected to the switching push plate 710.
  • the lower surface of the switching push plate 710 may be provided with a groove
  • the upper surface of the link portion 721 may be provided with a protrusion that cooperates with the groove, whereby the switching push plate 710 can be inserted in the connection of the switching pusher 720.
  • the fixed shell portion 240 may be provided with a sliding slot 730, and the connecting rod portion 721 is slidably installed in the sliding slot 730.
  • the chute 730 may extend in the front-rear direction, whereby the link portion 721 can slide in the front-rear direction, so that the switching push plate 710 can drive the moving casing portion 250 to move from the closed position A1 to the open position A2 in the front-rear direction.
  • the moving shell portion 250 is rotated about the pivoting shaft 251 relative to the fixed shell portion 240, and the switching pusher plate 710 can abut against the moving shell portion 250 to drive the moving shell portion 250 to rotate about the pivoting shaft 251 to the open position A2.
  • the switching pusher 720, the switching push plate 710, and the moving shell portion 250 convert the linear displacement of the link portion 721 into the pivoting motion of the moving shell portion 250.
  • the surface of the switching push plate 710 that abuts against the moving shell portion 250 may be curved.
  • the switching push plate 710 is provided with a wind guiding surface 711 for guiding the circulating air discharged from the circulating air outlet of the volute 200.
  • the wind guiding surface 711 is opposed to the ventilating opening of the volute 200, and the wind guiding surface 711 is an arcuate wind guiding surface 711.
  • the wind discharged from the volute circulation air outlet 260 flows to the wind guiding surface 711 of the switching push plate 710, and the air guiding surface 711 can change the wind direction to guide the wind forward, thereby shortening the wind from the volute
  • the flow distance of the air outlet 260 to the venting air outlet 101 of the hood increases the working efficiency of the range hood 1000.
  • the wind guiding surface 711 as an arcuate guiding surface, the noise generated by the collision of the wind to the guiding surface and the guiding surface can be made low, which is advantageous for reducing the noise of the range hood 1000.
  • the switching driving device 700 may also be an electric driving component, and the range hood 1000 may further be provided with a starting touch portion, and the touch sensing portion is electrically connected to the electric driving member. Therefore, the user only needs to activate the touch portion according to actual needs to realize the switching of the range hood 1000 to the indoor exhaust and the outdoor exhaust, thereby making the operation and control of the range hood 1000 simple and improving the user experience.
  • the volute 200 includes a fixed casing portion 240 and a plurality of moving casing portions 250.
  • the fixed casing portion 240 includes a substrate portion 241 and a plurality of fixed side wall portions 242.
  • the volute air inlets 220 are formed on the substrate portion 241, and each of the fixed side wall portions 242 is fixedly disposed on the substrate portion 241 and surrounds the corresponding volute. Tuyere 220.
  • the plurality of moving shell portions 250 correspond to the plurality of fixed side wall portions 242, and each of the moving shell portions 250 is movable relative to the fixed side wall portion 242 corresponding thereto between the closed position A1 and the open position A2, wherein the moving shell When the portion 250 is in the open position A2, the moving shell portion 250 is offset from the fixed side wall portion 242 to define a volute circulation air outlet 260 between the moving shell portion 250 and the fixed side wall portion 242, and the volute circulation air outlet 260 is disposed.
  • the wind inside the volute duct 210 is allowed to discharge through the chamber.
  • the volute 200 is formed with a plurality of volute air inlets 220.
  • the plurality of wind wheel assemblies 300 can be in one-to-one correspondence with the plurality of volute air inlets 220.
  • the volute 200 forms a plurality of volute ducts 210, and the volute The air ducts 210 are in one-to-one correspondence with the volute air inlets 220.
  • Each of the volutes 200 corresponds to a fixed side wall portion 242 and a moving shell portion 250, and the moving shell portion 250 is movable in the open position A2 and the closed position A1.
  • the range hood 1000 further includes a switching drive device 700 configured to drive the plurality of moving housing portions 250 to synchronously move, thereby causing the plurality of moving housing portions 250 to synchronously move to the open position A2.
  • the switching driving device 700 can be associated with the plurality of moving shell portions 250 at the same time.
  • the plurality of moving shell portions 250 can move synchronously with the switching driving device 700, so that simultaneously The plurality of volute circulation air outlets 260 are opened, so that the plurality of volute air ducts 210 of the range hood 1000 can simultaneously realize the function of exhausting into the room.
  • linkage is an associated motion between two components.
  • two intermeshing gears when one gear rotates, the other gear rotates synchronously.
  • the range hood 1000 of the embodiment of the present invention by setting the switching drive device 700 for driving the plurality of moving shell portions 250 to be synchronously linked, the range hood 1000 can be made simple to operate and the user can be used. Experience.
  • the fixed side wall portion 242 and the moving shell portion 250 are both two and respectively correspond. It can be understood that one fixed side wall portion 242 corresponds to one moving shell portion 250, and the other solid portion The fixed side wall portion 242 corresponds to the other moving shell portion 250.
  • Each of the moving housing portions 250 is movable between an open position A2 and a closed position A1.
  • one of the fixed side wall portions 242 and the moving shell portion 250 is symmetrically distributed to the left and right sides of the substrate portion 241 with the other set of the fixed side wall portion 242 and the moving shell portion 250.
  • the volute 200 is simple in structure and reasonable in arrangement.
  • the fixed side wall portion 242 mates with the moving shell portion 250 and allows the wind within the volute duct 210 to be exhausted from the volute vent 230.
  • the switching drive device 700 may include a switching push plate 710 configured to drive the two moving housing portions 250 to synchronize to the open position A2. mobile. Wherein, a part or an end surface of the switching push plate 710 can abut against the outer surface of the moving shell portion 250, so that when the switching push plate 710 moves, the switching push plate 710 can drive the two moving shell portions 250 to the closed position A1. Open position A2 to move.
  • the switching driving device 700 may further include: switching the pushing hand 720 , and at least a portion of the switching pushing hand 720 is exposed outside the volute 200 and connected to the switching push plate 710 . That is, the user can control the movement of the switching push plate 710 by operating the switching pusher 720 such that the switching push plate 710 drives the two moving housing portions 250 to move.
  • the switching push plate 710 and the switching push hand 720 can be a split structure, thereby facilitating the assembly of the range hood 1000 and improving the production efficiency of the range hood 1000.
  • the user can switch the pusher 720 by switching the pusher 720 to expose a part of the outside of the volute 200.
  • the switching pusher 720 may include a link portion 721 and a handle portion 722, the handle portion 722 is exposed outside the volute 200, the link portion 721 is fixed to the handle portion 722, and the link portion 721 It is connected to the switching push plate 710.
  • the lower surface of the switching push plate 710 may be provided with a groove
  • the upper surface of the link portion 721 may be provided with a protrusion that cooperates with the groove, whereby the switching push plate 710 can be inserted in the connection of the switching pusher 720.
  • the moving shell portion 250 is rotatable relative to the fixed side wall portion 242 about the pivot shaft 251.
  • the two moving shell portions 250 are respectively located on the left and right sides of the switching push plate 710, and the switching push plates 710 are respectively abutted.
  • the moving housing portions 250 on both sides simultaneously drive the two moving housing portions 250 to rotate about the respective pivoting shafts 251 toward the open position A2.
  • the pivot shaft 251 may be disposed on the second fixed side wall portion 244 of the fixed side wall portion 242, and the pivot shafts 251 of the two moving shell portions 250 may be disposed on the second side of the fixed side wall portion 242.
  • the fixed side wall portion 244 is disposed, and the two pivot shafts 251 are spaced apart in the left-right direction, and the switching push plate 710 can be disposed adjacent to the two pivot shafts 251, so that the switching push plate 710 can synchronously drive the two moving shell portions 250.
  • the respective pivot shafts 251 are rotated from the closed position A1 to the open position A2.
  • the switching push plate 710 may be located at an intermediate position of the two moving shell portions 250, and the switching push plate 710 may push against the pivot end 252 of the moving shell portion 250 connected to the pivot shaft 251.
  • the switching push plate 710 may be provided with a left side air guiding surface and a right side air guiding surface, and the left side guiding The wind surface is used to guide the circulating air discharged from the circulating vent of the volute 200 on the left side, and the right air guiding surface is used to guide the circulating air discharged from the circulating vent of the volute 200 on the right side.
  • the left air guiding surface is opposite to the circulating air outlet of the volute 200 on the left side
  • the right air guiding surface is opposite to the circulating air outlet of the right volute 200, and both the left guiding side and the right guiding side are It is a curved wind guiding surface 711.
  • the wind discharged from the volute circulation air outlet 260 on the left side can be discharged from the venting air outlet 101 under the guidance of the left side air guiding surface, and the wind discharged from the right side volute circulation air outlet 260 can be Under the guidance of the right wind guiding surface, the air outlet 101 is discharged from the venting machine.
  • the left guiding surface 711 and the right guiding surface 711 are all curved guiding surfaces, so that the noise of the range hood 1000 can be reduced.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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Abstract

一种吸油烟机（1000），包括蜗壳（200），蜗壳（200）上设置有蜗壳进风口（220）和与烟机排风口（102）连通的蜗壳排风口（230）。蜗壳（200）包括固定壳部（240）和移动壳部（250），移动壳部（250）相对固定壳部（240）可移动，在移动壳部（250）处在关闭位置时，固定壳部（240）与移动壳部（250）配合且风从蜗壳排风口（230）排出，在移动壳部（250）处在打开位置时，移动壳部（250）相对固定壳部（240）错开以允许风排入到室内。吸油烟机（1000）向室内排气时风流动距离短，提高了工作效率。

Description

吸油烟机 技术领域
本发明涉及厨房用具领域，尤其涉及一种吸油烟机。
背景技术
相关技术中，吸油烟机虽然可以实现向室内排气和向室外排气，但是在向室内排气时，内循环风道过长，导致风量、风压损失较大，而双风机的吸油烟机左右尺寸较大且成本较高；由于切换板为向蜗壳螺线外方向开合方式，在关闭状态下，蜗壳风道内风压会顶起移动壳部，特别在高档位风压大的时候，顶起的连接缝隙会出现高频的气流哨音，声品质差。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本发明提出一种向室内排气时风的流动距离较短的吸油烟机。
根据本发明的吸油烟机，包括：烟机壳体，所述烟机壳体上设置有烟机循环出风口和烟机排风口；蜗壳，所述蜗壳至少部分地设置在所述烟机壳体内，所述蜗壳内具有蜗壳风道，所述蜗壳上设置有蜗壳进风口和与所述烟机排风口连通的蜗壳排风口，所述蜗壳包括固定壳部和移动壳部，所述移动壳部相对所述固定壳部可在关闭位置与打开位置之间移动，其中在所述移动壳部处在所述关闭位置时，所述固定壳部与所述移动壳部配合且允许所述蜗壳风道内的风从所述蜗壳排风口排出，在所述移动壳部处在所述打开位置时，所述移动壳部相对所述固定壳部错开以在所述移动壳部与所述固定壳部之间限定出与所述烟机循环出风口连通的蜗壳循环出风口，从而允许所述蜗壳风道内的风依次通过所述蜗壳循环出风口和所述烟机循环出风口排入到室内。
根据本发明的吸油烟机，通过将蜗壳设置成固定壳部和移动壳部，且移动壳部可以相对固定壳部运动以在打开位置和关闭位置之间移动，从而可以使得吸油烟机具有向室内排放风和向室外排放风的功能。其中，由于向室内排放风时，蜗壳风道内的风可以直接通过蜗壳循环出风口流动到烟机循环出风口处，可以有效缩短吸油烟机向室内排放风时风的流动距离，可以至少一定程度上降低风量和风压的损失，提高吸油烟机向室内排放的效率。
另外，根据本发明的吸油烟机还可以具有以下技术特征：
在本发明的一些示例中，所述固定壳部包括：基板部，所述蜗壳进风口形成在所述基板部上；固定侧壁部，所述固定侧壁部固定设置在所述基板部上且环绕所述蜗壳进风口，其中所述移动壳部相对所述固定侧壁部位置可调以在所述移动壳部处在所述打开位置时与 所述固定侧壁部之间限定出所述蜗壳循环出风口。
在本发明的一些示例中，在所述移动壳部处在所述关闭位置时，所述移动壳部与所述固定侧壁部在蜗壳风道的延伸方向上平滑连接。
在本发明的一些示例中，在所述移动壳部处在所述关闭位置时所述移动壳部的型线与所述固定侧壁部的型线处在同一螺旋线上。
在本发明的一些示例中，所述固定侧壁部包括：第一固定侧壁部和第二固定侧壁部，所述第一固定侧壁部与所述第二固定侧壁部间隔开，所述移动壳部设置在所述第一固定侧壁部与所述第二固定侧壁部之间，并在所述移动壳部处在所述关闭位置时，所述移动壳部的两端分别与所述第一固定侧壁部和所述第二固定侧壁部相接以使所述第一固定侧壁部、所述移动壳部与所述第二固定侧壁部在所述蜗壳风道的延伸方向上连续。
在本发明的一些示例中，所述第一固定侧壁部的自由端与所述第二固定侧壁部的自由端之间限定出所述蜗壳排风口。
在本发明的一些示例中，所述移动壳部绕枢转轴相对所述固定侧壁部可枢转。
在本发明的一些示例中，所述枢转轴设置在所述第二固定侧壁部上，所述移动壳部的枢转端与所述枢转轴连接且另一端与所述第一固定侧壁部的配合端邻接，所述第一固定侧壁部的配合端为与所述第一固定侧壁部的自由端相对的一端。
在本发明的一些示例中，所述第一固定侧壁部为弧形壁且开口朝向所述第二固定侧壁部，所述第二固定侧壁部形成为大体平板结构。
在本发明的一些示例中，所述固定侧壁部为两个且对称地分布在所述基板部上，两个所述固定侧壁部的第一固定侧壁部的开口朝向彼此，且两个固定侧壁部共用同一个第二固定侧壁部。
在本发明的一些示例中，所述蜗壳循环出风口位于所述第二固定侧壁部的前侧，所述蜗壳排风口位于所述第二固定侧壁部的后侧，所述蜗壳进风口分别位于所述第二固定侧壁部的左右两侧。
在本发明的一些示例中，还包括：风轮组件，所述风轮组件至少部分地设置在所述蜗壳风道内且包括风轮和驱动电机，所述移动壳部与所述风轮的最近距离L满足关系式：5mm≤L≤30mm。
在本发明的一些示例中，所述L进一步满足关系式：L＝10mm。
在本发明的一些示例中，所述移动壳部通过枢转轴相对所述固定壳部可转动，所述移动壳部的枢转端与所述枢转轴相连且另一端为自由端，所述移动壳部的自由端与所述风轮的距离最近。
在本发明的一些示例中，所述吸油烟机还包括：风轮组件和第一限位装置，所述风轮 组件至少部分地设置在所述蜗壳风道内且包括风轮和驱动电机，所述第一限位装置设置在所述固定壳部上且位于所述风轮与所述移动壳部之间。
在本发明的一些示例中，所述吸油烟机还包括：第二限位装置，所述第二限位装置设置在所述固定壳部上且位于所述移动壳部外侧。
在本发明的一些示例中，所述吸油烟机还包括：保持装置，所述保持装置设置成用于保持处在所述打开位置的所述移动壳部。
在本发明的一些示例中，所述吸油烟机还包括：切换驱动装置，所述切换驱动装置设置成用于驱动所述移动壳部向所述打开位置移动。
在本发明的一些示例中，所述切换驱动装置包括：切换推板，所述切换推板设置成用于驱动所述移动壳部向所述打开位置移动。
在本发明的一些示例中，所述切换驱动装置还包括：切换推手，所述切换推手的至少一部分外露在所述蜗壳外部且与所述切换推板相连。
在本发明的一些示例中，所述切换推手包括：连杆部和手柄部，所述手柄部外露在所述蜗壳外部，所述连杆部固定在所述手柄部上且与所述切换推板相连。
在本发明的一些示例中，所述切换推板上设置有导风面，所述导风面用于导引从所述蜗壳循环排风口排出的循环风。
在本发明的一些示例中，所述移动壳部通过蜗壳风道内的风压作用从所述打开位置向所述关闭位置复位。
在本发明的一些示例中，所述蜗壳包括：固定壳部，所述固定壳部包括基板部和多个固定侧壁部，所述蜗壳进风口形成在所述基板部上，每个所述固定侧壁部固定设置在所述基板部上且环绕对应的所述蜗壳进风口；多个移动壳部，所述多个移动壳部与所述多个固定侧壁部对应，且每个所述移动壳部相对与之对应的固定侧壁部可在关闭位置与打开位置之间移动，其中在所述移动壳部处在所述打开位置时，所述移动壳部相对所述固定侧壁部错开以在所述移动壳部与所述固定侧壁部之间限定出蜗壳循环出风口，所述蜗壳循环出风口设置成允许所述蜗壳风道内的风通过其向室内排放；所述吸油烟机还包括：切换驱动装置，所述切换驱动装置设置成用于驱动所述多个移动壳部同步联动，从而使所述多个移动壳部同步移动至所述打开位置。
在本发明的一些示例中，所述切换驱动装置包括：切换推板，所述切换推板设置成用于驱动两个所述移动壳部同步向所述打开位置移动；切换推手，所述切换推手的至少一部分外露在所述蜗壳外部且与所述切换推板相连，所述切换推手包括：连杆部和手柄部，所述手柄部外露在所述蜗壳外部，所述连杆部固定在所述手柄部上且与所述切换推板相连。
在本发明的一些示例中，所述烟机循环出风口设置在位于所述蜗壳循环出风口前上方 的烟机壳体上。
在本发明的一些示例中，所述烟机壳体包括：平直顶壁部和倾斜顶壁部，所述倾斜顶壁部设置在所述平直顶壁部的前侧，并且所述平直顶壁部从后向前朝下延伸，所述烟机循环出风口设置在所述倾斜顶壁部上且位于所述倾斜顶壁部与平直顶壁部的交界处。
在本发明的一些示例中，所述烟机循环出风口邻近所述蜗壳循环出风口布置。
在本发明的一些示例中，所述吸油烟机还包括：封头结构，所述封头结构设置成用于打开或封闭所述烟机排风口。
在本发明的一些示例中，所述吸油烟机还包括：进风滤网，所述进风滤网设置在所述蜗壳进风口处。
附图说明
图1是根据本发明实施例的吸油烟机的爆炸图；
图2是根据本发明实施例的吸油烟机的安装有风轮组件的蜗壳的结构示意图；
图3是根据本发明实施例的吸油烟机的蜗壳的立体图；
图4是根据本发明实施例的蜗壳和风轮组件的爆炸图；
图5是根据本发明实施例的吸油烟机的蜗壳的结构示意图；
图6是根据本发明实施例的吸油烟机的蜗壳的剖视图；
图7是图6中区域A的放大图；
图8是根据本发明实施例的吸油烟机的局部剖视图，且移动壳部处在打开位置；
图9是根据本发明实施例的吸油烟机的局部剖视图，且移动壳部处在打开位置；
图10是根据本发明实施例的吸油烟机的风轮组件和蜗壳的俯视图；
图11是图10中区域B的放大图。
附图标记：
吸油烟机1000；
烟机壳体100；烟机循环出风口101；烟机排风口102；平直顶壁部103；倾斜顶壁部104；
蜗壳200；蜗壳风道210；蜗壳进风口220；蜗壳排风口230；固定壳部240；基板部241；固定侧壁部242；第一固定侧壁部243；第二固定侧壁部244；第一固定侧壁部的配合端245；
移动壳部250；枢转轴251；枢转端252；压板253；蜗壳循环出风口260；
风轮组件300；风轮301；驱动电机302；
第一限位装置400；第二限位装置500；
切换驱动装置700；切换推板710；导风面711；切换推手720；连杆部721；手柄部722；滑槽730；
封头结构800；进风滤网900；
关闭位置A1；打开位置A2。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下面参考附图详细描述根据本发明实施例的吸油烟机1000。
根据本发明实施例的吸油烟机1000可以包括：烟机壳体100和蜗壳200。如图1所示，烟机壳体100上设置有烟机循环出风口101和烟机排风口102。可选地，如图8和图9所示，烟机循环出风口101位于烟机排风口102的前侧。
如图8和图9所示，蜗壳200至少部分地设置在烟机壳体100内，其中，可选地，蜗壳200可以整体设置在烟机壳体100内，从而烟机壳体100可以较好地保护蜗壳200。如图1和图2所示，蜗壳200内具有蜗壳风道210，蜗壳200上设置有蜗壳进风口220和与烟机排风口102连通的蜗壳排风口230，蜗壳200包括固定壳部240和移动壳部250，移动壳部250相对固定壳部240可在关闭位置A1与打开位置A2之间移动。其中，在移动壳部250处在关闭位置A1时，固定壳部240与移动壳部250配合且允许蜗壳风道210内的风从蜗壳排风口230排出。在移动壳部250处在打开位置A2时，移动壳部250相对固定壳部240错开以在移动壳部250与固定壳部240之间限定出与烟机循环出风口101连通的蜗壳循环出风口260，从而允许蜗壳风道210内的风依次通过蜗壳循环出风口260和烟机循环出风口101排入到室内。
其中，需要说明的是，移动壳部250处在关闭位置A1时，烟机排风口102处于打开状态，蜗壳风道210的风可以依次通过蜗壳排风口230和烟机排风口102排放到室外。移动壳部250处在打开位置A2时，烟机排风口102处于关闭状态，可选地，如图1和图8所示，吸油烟机1000还可以包括：封头结构800，封头结构800设置成用于打开或封闭烟机排风口102。可以理解的是，当需要关闭烟机排风口102时，封头结构800封闭烟机排风口102。可选地，烟机排风口102可以为端盖结构，端盖结构上设置有螺纹，烟机排风口102的侧壁上设置有与端盖结构上的螺纹相对应的螺纹，从而端盖结构可以拧紧在烟机排风口102处。如图1、图8和图9所示，烟机循环出风口101可以沿烟机壳体100的长度方向(即图8所示的左右方向)分布。其中，烟机循环出风口101处于常开状态，当移动壳部250处在关闭位置A1时，蜗壳风道210内的风无法通过蜗壳循环出风口260流动到烟机循环出 风口101处。另外，风轮组件300的上端盖可以止抵在烟机壳体100的内表面上，从而蜗壳200、风轮组件300和烟机壳体100限定出环形的蜗壳风道210。
其中，在移动壳部250处在打开位置A2时，蜗壳风道210内的风可以直接通过蜗壳循环出风口260直接排出蜗壳风道210，排出蜗壳风道210的风可以直接通过烟机循环出风口101排放到室内。由此，吸油烟机1000在向室内排风时，风在蜗壳200内流动距离较短，从而可以至少一定程度上降低风量和风压的损失，提高吸油烟机1000向室内排放的效率。
根据本发明的一个实施例，如图8和图9所示，烟机循环出风口101可以设置在位于蜗壳循环出风口260前上方的烟机壳体100上。如图8所示，箭头表示吸油烟机1000内的风的流动方向，可以看出从蜗壳循环出风口260流出的风向前排放，由于烟机循环出风口101位于蜗壳循环出风口260的前上方，从而风可以直接向前且向上流动，从而可以保持风的流动速度，进而可以提高吸油烟机1000的排放效率。可选地，如图8所示，烟机循环出风口101可以邻近蜗壳循环出风口260布置。由此，可以进一步地缩短从风从蜗壳循环出风口260到烟机循环出风口101之间的流动距离，可以提高吸油烟机1000向室内排放风的效率。
可选地，如图1、图8和图9所示，烟机壳体100可以包括：平直顶壁部103和倾斜顶壁部104，倾斜顶壁部104设置在平直顶壁部103的前侧，并且平直顶壁部103从后向前朝下延伸，烟机循环出风口101可以设置在倾斜顶壁部104上且位于倾斜顶壁部104与平直顶壁部103的交界处。由此，从烟机循环出风口101排出的风可以向上且向前流动，从而可以防止风直接向上流动，可以进一步地加快风在室内的扩散速度，加快室内温度的提高，提高用户的使用体验。
可选地，如图1所示，吸油烟机1000还可以包括：进风滤网900，进风滤网900设置在蜗壳进风口220处。
风轮组件300至少部分地设置在蜗壳风道210内，而且风轮组件300包括：风轮301和驱动电机302。如图4所示，驱动电机302可以设置在蜗壳200上，风轮301扣设在驱动电机302的外侧，而且风轮301与驱动电机302相连。在驱动电机302的驱动下，风轮301可以从蜗壳进风口220处吸风以使得风进入到蜗壳风道210内且在蜗壳风道210内流动。
根据本发明实施例的吸油烟机1000，通过将蜗壳200设置成固定壳部240和移动壳部250，而且移动壳部250可以相对固定壳部240运动以在打开位置A2和关闭位置A1之间移动，从而可以使得吸油烟机1000具有向室内排风和向室外排风的功能。其中，由于向室内排放风时，蜗壳风道210内的风可以直接通过蜗壳循环出风口260流动到烟机循环出风口101处，可以有效缩短吸油烟机1000向室内排风时风的流动距离，可以至少一定程度上降 低风量和风压的损失，提高吸油烟机1000向室内排放的效率。
下面结合附图详细描述根据本发明实施例的吸油烟机1000的蜗壳200。
结合图2、图4和图5所示，固定壳部240可以包括：基板部241和固定侧壁部242。如图3所示，蜗壳进风口220形成在基板部241上，固定侧壁部242可以固定设置在基板部241上，而且固定侧壁部242环绕蜗壳进风口220。可选地，固定侧壁部242可以与基板部241为一体成型结构，一体成型结构的固定壳部240结构简单且强度较高，还可以省略固定侧壁部242和基板部241的安装过程。其中移动壳部250相对固定侧壁部242位置可调以在移动壳部250处在打开位置A2时与固定侧壁部242之间限定出蜗壳循环出风口260。
可选地，如图2、图9和图10所示，在移动壳部250处在关闭位置A1时，移动壳部250与固定侧壁部242在蜗壳风道210的延伸方向上平滑连接。其中，蜗壳风道210的延伸方向即图10所示的蜗壳风道210内的箭头方向，下文中提到的蜗壳风道210的延伸方向在没有特别指出的情况下均以此为准。可以理解的是，平滑连接的移动壳部250和固定侧壁部242可以降低蜗壳200对蜗壳风道210内的风的阻力，进一步地可以降低风与蜗壳200之间产生的噪音，还可以至少一定程度上防止移动壳部250在关闭位置A1时、风通过蜗壳循环出风口260排出。
可选地，在移动壳部250处在关闭位置A1时，移动壳部250的型线与固定侧壁部242的型线处在同一螺旋线上。由此，可以保证吸油烟机1000在向室外排风时扩压效果较好，吸油烟机1000的排放效率高。其中，移动壳部250的型线可以形成在移动壳部250的朝向风轮组件300的内表面，固定侧壁部242的型线可以形成在固定侧壁部242朝向风轮组件300的内表面。
进一步地，如图2、图4和图5所示，固定侧壁部242可以包括：第一固定侧壁部243和第二固定侧壁部244，第一固定侧壁部243与第二固定侧壁部244间隔开，移动壳部250设置在第一固定侧壁部243与第二固定侧壁部244之间，并在移动壳部250处在关闭位置A1时，移动壳部250的两端分别与第一固定侧壁部243和第二固定侧壁部244相接以使第一固定侧壁部243、移动壳部250与第二固定侧壁部244在蜗壳风道210的延伸方向上连续。
其中，可选地，第一固定侧壁部243的配合端245可以设有用于搭接移动壳部250的自由端的倾斜引导边，移动壳部250的自由端可以设置有与倾斜引导边相配合的倾斜边，从而可以使得在移动壳部250处在关闭位置A1时、第一固定侧壁部243和移动壳部250平滑连接，连接关系稳定。
具体地，如图5所示，第一固定侧壁部243的自由端与第二固定侧壁部244的自由端 之间限定出蜗壳排风口230。第一固定侧壁部243的自由端即图5所示的第一固定侧壁部243的后端，第二固定侧壁部244的自由端即图5所示的第二固定侧壁部244的后端。可以理解的是，蜗壳排风口230朝向后方设置，烟机排风口102可以设置在蜗壳排风口230的上方，吸油烟机1000安装在室内的墙壁上，当蜗壳风道210内的风从蜗壳排风口230向后流动时，在墙壁和蜗壳200的限定下，风向上流动直至从烟机排风口102排出到室外中。
可选地，移动壳部250可以绕枢转轴251相对固定侧壁部242可枢转。具体地，枢转轴251设置在第二固定侧壁部244上，移动壳部250的枢转端252与枢转轴251连接，而且移动壳部250的另一端与第一固定侧壁部243的配合端245邻接，第一固定侧壁部243的配合端245为与第一固定侧壁部243的自由端相对的一端。如图10所示，吸油烟机1000还可以包括：压板253，压板253可以将移动壳部250的枢转端252安装在第二固定侧壁部244的枢转轴251的位置，从而可以使得移动壳部250绕枢转轴251在打开位置A2和关闭位置A1之间转动。
在本发明的一些具体示例中，第一固定侧壁部243可以为弧形壁，而且第一固定侧壁部243的开口朝向第二固定侧壁部244，第二固定侧壁部244可以形成为大体平板结构。
可选地，如图10所示，固定侧壁部242可以为两个，而且两个固定侧壁部242对称地分布在基板部241上，两个固定侧壁部242的第一固定侧壁部243的开口朝向彼此，而且两个固定侧壁部242共用同一个第二固定侧壁部244。由此，可以减小蜗壳200的用料，降低蜗壳200的重量，而且还可以降低蜗壳200的体积和成本。相应地，蜗壳200上设可以置有两个移动壳部250，每个移动壳部250均设置在对应的第一固定侧壁部243和第二固定侧壁部244之间。
根据本发明的一个具体实施例，蜗壳循环出风口260可以位于第二固定侧壁部244的前侧，蜗壳排风口230可以位于第二固定侧壁部244的后侧，蜗壳进风口220分别位于第二固定侧壁部244的左右两侧。如图10所示，蜗壳200通过两个固定侧壁部242和两个移动壳部250可以形成有两个蜗壳风道210，两个蜗壳风道210分别位于第二固定侧壁部244的左右两侧。由此，两个蜗壳风道210互不干涉，均可以独立通过相应的蜗壳进风口220进风，还可以通过相应的蜗壳排风口230和烟机排风口102向室外排风，以及通过相应的蜗壳循环出风口260和烟机循环出风口101向室内排风。
下面结合附图详细描述根据本发明实施例的吸油烟机1000的移动壳部250与风轮301之间的限定关系。
在本发明的一些示例中，如图11所示，移动壳部250与风轮301的最近距离L可以满足关系式：5mm≤L≤30mm。移动壳部250与风轮301的最近距离即移动壳部250在打开位置A2时移动壳部250与第一固定侧壁部243之间错开且处于最大的错开距离。可以理解的 是，当吸油烟机1000工作时，移动壳部250与风轮301距离过近将导致蜗壳风道210内的风的压力无法将移动壳部250压回到关闭位置A1，移动壳部250与风轮301距离过远将导致通过蜗壳循环出风口260流出的风量较小，不利于提高吸油烟机1000的排放效率。由此，当L在5mm≤L≤30mm之间时，蜗壳循环出风口260的输出风量适宜，而且蜗壳风道210内的风的压力可以在适宜的条件下将移动壳部250压回至关闭位置A1。可选地，L可以进一步满足关系式：5mm≤L≤15mm。优选地，L可以进一步满足关系式：L＝10mm。
可选地，移动壳部250通过枢转轴251可以相对固定壳部240可转动。具体地，如图5和图10所示，枢转轴251设置在第二固定侧壁部244上，移动壳部250的枢转端252与枢转轴251相连，而且移动壳部250的另一端为自由端，移动壳部250的自由端与风轮301的距离最近。由此，移动壳部250的自由端与固定侧壁部242的第一固定侧壁部243的配合端245之间的距离较大，从而可以使得移动壳部250在打开位置A2时，蜗壳循环出风口260的开度较大，可以保证通过蜗壳循环出风口260的风量，还可以进一步地保证吸油烟机1000的工作效率。
可选地，如图5、图10和图11所示，蜗壳200还可以包括：第一限位装置400，第一限位装置400设置在固定壳部240上且位于风轮301与移动壳部250之间。当移动壳部250处在打开位置A2时，移动壳部250的自由端可以止挡在第一限位装置400上，第一限位装置400可以起到隔离开移动壳部250和风轮301的作用，以及可以保证移动壳部250与风轮301之间的最小距离，从而可以保证吸油烟机1000的正常工作。
可选地，第一限位装置400可以通过磁性作用吸附处在打开位置A2的移动壳部250。例如，移动壳部250可以为铁质件或者电磁件，第一限位装置400可以为磁铁，在移动壳部250从关闭位置A1向打开位置A2转动时，第一限位装置400可以产生吸力将移动壳部250吸附在其上以使得移动壳部250保持在打开位置A2。
或者，可选地，第一限位装置400为限位凸起，在移动壳部250处在打开位置A2时，移动壳部250抵靠在限位凸起上。限位凸起可以与蜗壳200的基板部241为一体成型结构。
进一步地，如图2、图5和图10所示，蜗壳200还可以包括：第二限位装置500，第二限位装置500设置在固定壳部240上，而且第二限位装置500位于移动壳部250外侧。其中，第二限位装置500可以与固定壳部240的基板部241为一体成型件。具体地，在移动壳部250相对固定壳部240移动至关闭位置A1时，固定壳部240与移动壳部250配合且允许蜗壳风道210内的风从蜗壳排风口230排出，而且第二限位装置500止挡移动壳部250的外表面。
可选地，第二限位装置500可以为限位凸条，限位凸条为弧形，在移动壳部250处在关闭位置A1时，移动壳部250可以抵靠在限位凸条上，从而可以至少一定程度上可以防止 蜗壳风道210内的风的压力将移动壳部250从关闭位置A1向外压迫，可以使得移动壳部250保持在关闭位置A1，可以降低吸油烟机1000的噪音，以及可以提高吸油烟机1000的工作可靠性。
下面结合附图详细描述根据本发明实施例的吸油烟机1000的保持装置。
在本发明的一些示例中，蜗壳200还可以包括：保持装置(图未示出)，保持装置设置成用于保持处在打开位置A2的移动壳部250。可以理解的是，保持装置可以将移动壳部250限定在打开位置A2。其中，移动壳部250通过蜗壳风道210内的风压作用从打开位置A2向关闭位置A1复位。
其中，由于吸油烟机1000具有向室内排气和向室外排气的功能，当室内温度较低时，用户可以根据需要设定吸油烟机1000向室内排气。吸油烟机1000向室内排气需要维持蜗壳循环出风口260处于常开状态，保持装置即可实现该功能。由此，通过设置保持装置，可以便于用户控制吸油烟机1000的排气状态，可以提高用户的使用体验。
可选地，如图6和图7所示，蜗壳200还可以包括：切换驱动装置700，切换驱动装置700设置成用于驱动移动壳部250向打开位置A2移动。进一步地，保持装置集成在切换驱动装置700上。可以理解的是，集成有保持装置的切换驱动装置700可以具有驱动移动壳部250的功能，还可以具有保持移动壳部250处在打开位置A2的功能。由此，保持装置和切换驱动装置700结构紧凑，占用空间小，操作方便。
根据本发明的一种可选的实施方式，保持装置可以为卡扣，卡扣适于在移动壳部250处在打开位置A2时卡接至固定壳部240以将移动壳部250保持在打开位置A2。可以理解的是，固定壳部240的基板部241上可以设置有与卡扣相配合的卡槽，当切换驱动装置700驱动移动壳部250转动到打开位置A2时，卡扣可以卡入卡槽中，从而基板部241可以通过限制切换驱动装置700的自由度将移动壳部250保持在打开位置A2。
根据本发明的另一种可选的实施方式，保持装置可以为螺纹紧固件，螺纹紧固件适于在移动壳部250处在打开位置A2时螺纹紧固至固定壳部240以将移动壳部250保持在打开位置A2。可以理解的是，切换驱动装置700和固定壳部240的基板部241上均可以设置螺孔，切换驱动装置700的螺孔与基板部241上的螺孔在上下方向上重合，螺纹紧固件可以依次穿过切换驱动装置700的螺孔和基板部241上的螺孔以将切换驱动装置700固定在基板部241上，从而可以将移动壳部250保持在打开位置A2。
根据本发明的再一种可选的实施方式，保持装置可以为弹性凸块，固定壳部240上可以设置有卡槽，弹性凸块适于在移动壳部250处在打开位置A2时弹性卡接在卡槽内以将移动壳部250保持在打开位置A2。可以理解的是，当切换驱动装置700驱动移动壳部250转动到打开位置A2时，弹性凸起可以弹性卡接入卡槽中，从而基板部241可以通过限制切换 驱动装置700的自由度将移动壳部250保持在打开位置A2。
根据本发明的再一种可选的实施方式，保持装置固定设置在固定壳部240上，保持装置通过磁性作用吸附处在打开位置A2的移动壳部250。可选地，保持装置为磁铁，移动壳部250上可以设置有可被磁铁磁性吸附的磁性件。例如，移动壳部250可以为金属件或者电磁件，保持装置可以通过吸力将移动壳部250保持在打开位置A2。
下面结合附图详细描述根据本发明实施例的吸油烟机1000的切换驱动装置700。
在本发明的一些实施例中，如图8-图10所示，切换驱动装置700可以包括：切换推板710，切换推板710设置成用于驱动移动壳部250向打开位置A2移动。其中，切换推板710的一部分或者一个端面可以贴靠在移动壳部250的外表面上，从而当切换推板710移动时，切换推板710可以带动移动壳部250在关闭位置A1向打开位置A2移动。
可选地，如图4所示，切换驱动装置700还可以包括：切换推手720，切换推手720的至少一部分外露在蜗壳200外部，而且切换推手720与切换推板710相连。也就是说，用户可以通过操作切换推手720控制切换推板710运动以使得切换推板710带动移动壳部250运动。其中，切换推板710和切换推手720可以为分体式结构，由此，可以便于吸油烟机1000的组装，提高吸油烟机1000的生产效率。
其中，用户可以通过切换推手720露出蜗壳200外部的部分操作切换推手720。具体地，如图7所示，切换推手720可以包括：连杆部721和手柄部722，手柄部722外露在蜗壳200外部，连杆部721固定在手柄部722上，而且连杆部721与切换推板710相连。例如，切换推板710的下表面上可以设有凹槽，连杆部721的上表面可以设有与凹槽配合的凸起，由此，切换推板710可以插装在切换推手720的连杆部721上。
可选地，如图4所示，固定壳部240上可以开设有滑槽730，连杆部721可滑动地安装在滑槽730内。滑槽730可以在前后方向上延伸，由此，连杆部721可以在前后方向上滑动，从而切换推板710可以在前后方向上驱动移动壳部250从关闭位置A1向打开位置A2移动。
进一步地，移动壳部250绕枢转轴251相对固定壳部240转动，切换推板710可以贴靠在移动壳部250上以驱动移动壳部250绕枢转轴251向打开位置A2转动。可以理解的是，切换推手720、切换推板710和移动壳部250将连杆部721的直线位移转化成移动壳部250的枢转运动。可选地，抵靠移动壳部250的切换推板710的表面可以为弧形。
可选地，如图8和图9所示，切换推板710上设置有导风面711，导风面711用于导引从蜗壳200循环排风口排出的循环风。如图8所示，导风面711与蜗壳200循环排风口相对，而且导风面711为弧形导风面711。从蜗壳循环出风口260排出的风流动到切换推板710的导风面711处，导风面711可以改变风向以向前引导风，从而可以缩短风从蜗壳循 环出风口260到烟机循环出风口101的流动距离，提高吸油烟机1000的工作效率。另外，通过将导风面711设置成弧形导向面，可以使得风流动到导向面处与导向面发生碰撞产生的噪音较低，有利于降低吸油烟机1000的噪音。
另外，可选地，切换驱动装置700还可以为电驱动件，而且吸油烟机1000上还可以设置有启动触控部，启动触控部与电驱动件电连接。由此，用户仅需要根据实际需要触动启动触控部即可实现吸油烟机1000向室内排气和向室外排气的切换，从而可以使得吸油烟机1000操作控制简单，提高用户的使用体验。
下面详细描述根据本发明实施例的吸油烟机1000的一种具体布置方式。
蜗壳200包括：固定壳部240和多个移动壳部250。固定壳部240包括基板部241和多个固定侧壁部242，蜗壳进风口220形成在基板部241上，每个固定侧壁部242固定设置在基板部241上且环绕对应的蜗壳进风口220。多个移动壳部250与多个固定侧壁部242对应，而且每个移动壳部250相对与之对应的固定侧壁部242可在关闭位置A1与打开位置A2之间移动，其中在移动壳部250处在打开位置A2时，移动壳部250相对固定侧壁部242错开以在移动壳部250与固定侧壁部242之间限定出蜗壳循环出风口260，蜗壳循环出风口260设置成允许蜗壳风道210内的风通过其向室内排放。换言之，蜗壳200上形成有多个蜗壳进风口220，多个风轮组件300可以与多个蜗壳进风口220一一对应，蜗壳200内形成多个蜗壳风道210，蜗壳风道210与蜗壳进风口220一一对应，每个蜗壳200均对应一个固定侧壁部242和一个移动壳部250，而且移动壳部250可以在打开位置A2和关闭位置A1移动。
吸油烟机1000还包括：切换驱动装置700，切换驱动装置700设置成用于驱动多个移动壳部250同步联动，从而使多个移动壳部250同步移动至打开位置A2。可以理解的是，切换驱动装置700可以同时与多个移动壳部250相关联，当用户控制切换驱动装置700移动时，多个移动壳部250可以随着切换驱动装置700同步移动，从而可以同时打开多个蜗壳循环出风口260，进而可以使得吸油烟机1000的多个蜗壳风道210同时实现向室内排气的功能。
其中，需要说明的是，“联动”为两个部件之间的关联运动。例如两个相互啮合的齿轮，当一个齿轮转动时，另一个齿轮同步转动。
由此，根据本发明实施例的吸油烟机1000，通过将切换驱动装置700设置成用于驱动多个移动壳部250同步联动，可以使得吸油烟机1000操作控制机简单，可以提高用户的使用体验。
在本发明的一些示例中，如图2和图4所示，固定侧壁部242和移动壳部250均为两个且分别对应。可以理解的是，一个固定侧壁部242与一个移动壳部250对应，另一个固 定侧壁部242和另一个移动壳部250对应。每个移动壳部250均可以在打开位置A2和关闭位置A1之间移动。
可选地，如图5所示，其中一组固定侧壁部242和移动壳部250与另外一组固定侧壁部242和移动壳部250在基板部241上左右对称分布。由此，蜗壳200结构简单，而且布置合理。
可选地，在移动壳部250处在关闭位置A1时，固定侧壁部242与移动壳部250配合且允许蜗壳风道210内的风从蜗壳排风口230排出。
在本发明的一些具体示例中，如图8-图10所示，切换驱动装置700可以包括：切换推板710，切换推板710设置成用于驱动两个移动壳部250同步向打开位置A2移动。其中，切换推板710的一部分或者一个端面可以贴靠在移动壳部250的外表面上，从而当切换推板710移动时，切换推板710可以带动两个移动壳部250在关闭位置A1向打开位置A2移动。
进一步地，如图6和图7所示，切换驱动装置700还可以包括：切换推手720，切换推手720的至少一部分外露在蜗壳200外部且与切换推板710相连。也就是说，用户可以通过操作切换推手720控制切换推板710运动以使得切换推板710带动两个移动壳部250运动。其中，切换推板710和切换推手720可以为分体式结构，由此，可以便于吸油烟机1000的组装，提高吸油烟机1000的生产效率。
其中，用户可以通过切换推手720露出蜗壳200外部的部分操作切换推手720。具体地，如图7所示，切换推手720可以包括：连杆部721和手柄部722，手柄部722外露在蜗壳200外部，连杆部721固定在手柄部722上，而且连杆部721与切换推板710相连。例如，切换推板710的下表面上可以设有凹槽，连杆部721的上表面可以设有与凹槽配合的凸起，由此，切换推板710可以插装在切换推手720的连杆部721上。
根据本发明的一个实施例，移动壳部250可以绕枢转轴251相对固定侧壁部242转动，两个移动壳部250分别位于切换推板710的左右两侧，并且切换推板710分别贴靠两侧的移动壳部250上以同步驱动两个移动壳部250绕各自的枢转轴251向打开位置A2转动。
如图10所示，枢转轴251可以设置在固定侧壁部242的第二固定侧壁部244上，而两个移动壳部250的枢转轴251均可以设置在固定侧壁部242的第二固定侧壁部244上，而且两个枢转轴251在左右方向上间隔开，切换推板710可以邻近两个枢转轴251设置，从而可以使得切换推板710可以同步驱动两个移动壳部250绕各自的枢转轴251从关闭位置A1向打开位置A2转动。具体地，切换推板710可以位于两个移动壳部250的中间位置，而且切换推板710可以推抵移动壳部250与枢转轴251相连的枢转端252。
可选地，如图8所示，切换推板710上可以设置有左侧导风面和右侧导风面，左侧导 风面用于导引从左侧的蜗壳200循环排风口排出的循环风，右侧导风面用于导引从右侧的蜗壳200循环排风口排出的循环风。而且左侧导风面与左侧的蜗壳200循环排风口相对，右侧导风面与右侧的蜗壳200循环排风口相对，且左侧导风面和右侧导风面均为弧形导风面711。由此，从左侧的蜗壳循环出风口260排出的风可以在左侧导风面的引导下，从烟机循环出风口101排出，从右侧的蜗壳循环出风口260排出的风可以在右侧导风面的引导下，从烟机循环出风口101排出。
其中，左侧引导面711和右侧引导面711均为弧形引导面，从而可以降低吸油烟机1000的噪音。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述 不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (30)

  1. 一种吸油烟机，其特征在于，包括：
    烟机壳体，所述烟机壳体上设置有烟机循环出风口和烟机排风口；
    蜗壳，所述蜗壳至少部分地设置在所述烟机壳体内，所述蜗壳内具有蜗壳风道，所述蜗壳上设置有蜗壳进风口和与所述烟机排风口连通的蜗壳排风口，所述蜗壳包括固定壳部和移动壳部，所述移动壳部相对所述固定壳部可在关闭位置与打开位置之间移动，其中
    在所述移动壳部处在所述关闭位置时，所述固定壳部与所述移动壳部配合且允许所述蜗壳风道内的风从所述蜗壳排风口排出，
    在所述移动壳部处在所述打开位置时，所述移动壳部相对所述固定壳部错开以在所述移动壳部与所述固定壳部之间限定出与所述烟机循环出风口连通的蜗壳循环出风口，从而允许所述蜗壳风道内的风依次通过所述蜗壳循环出风口和所述烟机循环出风口排入到室内。
  2. 根据权利要求1所述的吸油烟机，其特征在于，所述固定壳部包括：
    基板部，所述蜗壳进风口形成在所述基板部上；
    固定侧壁部，所述固定侧壁部固定设置在所述基板部上且环绕所述蜗壳进风口，其中所述移动壳部相对所述固定侧壁部位置可调以在所述移动壳部处在所述打开位置时与所述固定侧壁部之间限定出所述蜗壳循环出风口。
  3. 根据权利要求2所述的吸油烟机，其特征在于，在所述移动壳部处在所述关闭位置时，所述移动壳部与所述固定侧壁部在蜗壳风道的延伸方向上平滑连接。
  4. 根据权利要求2所述的吸油烟机，其特征在于，在所述移动壳部处在所述关闭位置时所述移动壳部的型线与所述固定侧壁部的型线处在同一螺旋线上。
  5. 根据权利要求2所述的吸油烟机，其特征在于，所述固定侧壁部包括：
    第一固定侧壁部和第二固定侧壁部，所述第一固定侧壁部与所述第二固定侧壁部间隔开，所述移动壳部设置在所述第一固定侧壁部与所述第二固定侧壁部之间，并在所述移动壳部处在所述关闭位置时，所述移动壳部的两端分别与所述第一固定侧壁部和所述第二固定侧壁部相接以使所述第一固定侧壁部、所述移动壳部与所述第二固定侧壁部在所述蜗壳风道的延伸方向上连续。
  6. 根据权利要求5所述的吸油烟机，其特征在于，所述第一固定侧壁部的自由端与所述第二固定侧壁部的自由端之间限定出所述蜗壳排风口。
  7. 根据权利要求5所述的吸油烟机，其特征在于，所述移动壳部绕枢转轴相对所述固定侧壁部可枢转。
  8. 根据权利要求7所述的吸油烟机，其特征在于，所述枢转轴设置在所述第二固定侧 壁部上，所述移动壳部的枢转端与所述枢转轴连接且另一端与所述第一固定侧壁部的配合端邻接，所述第一固定侧壁部的配合端为与所述第一固定侧壁部的自由端相对的一端。
  9. 根据权利要求5所述的吸油烟机，其特征在于，所述第一固定侧壁部为弧形壁且开口朝向所述第二固定侧壁部，所述第二固定侧壁部形成为大体平板结构。
  10. 根据权利要求9所述的吸油烟机，其特征在于，所述固定侧壁部为两个且对称地分布在所述基板部上，两个所述固定侧壁部的第一固定侧壁部的开口朝向彼此，且两个固定侧壁部共用同一个第二固定侧壁部。
  11. 根据权利要求10所述的吸油烟机，其特征在于，所述蜗壳循环出风口位于所述第二固定侧壁部的前侧，所述蜗壳排风口位于所述第二固定侧壁部的后侧，所述蜗壳进风口分别位于所述第二固定侧壁部的左右两侧。
  12. 根据权利要求1所述的吸油烟机，其特征在于，还包括：风轮组件，所述风轮组件至少部分地设置在所述蜗壳风道内且包括风轮和驱动电机，所述移动壳部与所述风轮的最近距离L满足关系式：5mm≤L≤30mm。
  13. 根据权利要求12所述的吸油烟机，其特征在于，所述L进一步满足关系式：L＝10mm。
  14. 根据权利要求12所述的吸油烟机，其特征在于，所述移动壳部通过枢转轴相对所述固定壳部可转动，所述移动壳部的枢转端与所述枢转轴相连且另一端为自由端，所述移动壳部的自由端与所述风轮的距离最近。
  15. 根据权利要求1所述的吸油烟机，其特征在于，还包括：风轮组件和第一限位装置，所述风轮组件至少部分地设置在所述蜗壳风道内且包括风轮和驱动电机，所述第一限位装置设置在所述固定壳部上且位于所述风轮与所述移动壳部之间。
  16. 根据权利要求1所述的吸油烟机，其特征在于，还包括：第二限位装置，所述第二限位装置设置在所述固定壳部上且位于所述移动壳部外侧。
  17. 根据权利要求1所述的吸油烟机，其特征在于，还包括：保持装置，所述保持装置设置成用于保持处在所述打开位置的所述移动壳部。
  18. 根据权利要求1所述的吸油烟机，其特征在于，还包括：切换驱动装置，所述切换驱动装置设置成用于驱动所述移动壳部向所述打开位置移动。
  19. 根据权利要求18所述的吸油烟机，其特征在于，所述切换驱动装置包括：
    切换推板，所述切换推板设置成用于驱动所述移动壳部向所述打开位置移动。
  20. 根据权利要求19所述的吸油烟机，其特征在于，所述切换驱动装置还包括：
    切换推手，所述切换推手的至少一部分外露在所述蜗壳外部且与所述切换推板相连。
  21. 根据权利要求20所述的吸油烟机，其特征在于，所述切换推手包括：连杆部和手柄部，所述手柄部外露在所述蜗壳外部，所述连杆部固定在所述手柄部上且与所述切换推 板相连。
  22. 根据权利要求19所述的吸油烟机，其特征在于，所述切换推板上设置有导风面，所述导风面用于导引从所述蜗壳循环排风口排出的循环风。
  23. 根据权利要求1所述的吸油烟机，其特征在于，所述移动壳部通过蜗壳风道内的风压作用从所述打开位置向所述关闭位置复位。
  24. 根据权利要求1所述的吸油烟机，其特征在于，
    所述蜗壳包括：
    固定壳部，所述固定壳部包括基板部和多个固定侧壁部，所述蜗壳进风口形成在所述基板部上，每个所述固定侧壁部固定设置在所述基板部上且环绕对应的所述蜗壳进风口；
    多个移动壳部，所述多个移动壳部与所述多个固定侧壁部对应，且每个所述移动壳部相对与之对应的固定侧壁部可在关闭位置与打开位置之间移动，其中在所述移动壳部处在所述打开位置时，所述移动壳部相对所述固定侧壁部错开以在所述移动壳部与所述固定侧壁部之间限定出蜗壳循环出风口，所述蜗壳循环出风口设置成允许所述蜗壳风道内的风通过其向室内排放；
    所述吸油烟机还包括：切换驱动装置，所述切换驱动装置设置成用于驱动所述多个移动壳部同步联动，从而使所述多个移动壳部同步移动至所述打开位置。
  25. 根据权利要求24所述的吸油烟机，其特征在于，所述切换驱动装置包括：
    切换推板，所述切换推板设置成用于驱动两个所述移动壳部同步向所述打开位置移动；
    切换推手，所述切换推手的至少一部分外露在所述蜗壳外部且与所述切换推板相连，所述切换推手包括：连杆部和手柄部，所述手柄部外露在所述蜗壳外部，所述连杆部固定在所述手柄部上且与所述切换推板相连。
  26. 根据权利要求1所述的吸油烟机，其特征在于，所述烟机循环出风口设置在位于所述蜗壳循环出风口前上方的烟机壳体上。
  27. 根据权利要求26所述的吸油烟机，其特征在于，所述烟机壳体包括：平直顶壁部和倾斜顶壁部，所述倾斜顶壁部设置在所述平直顶壁部的前侧，并且所述平直顶壁部从后向前朝下延伸，所述烟机循环出风口设置在所述倾斜顶壁部上且位于所述倾斜顶壁部与平直顶壁部的交界处。
  28. 根据权利要求26所述的吸油烟机，其特征在于，所述烟机循环出风口邻近所述蜗壳循环出风口布置。
  29. 根据权利要求1所述的吸油烟机，其特征在于，还包括：封头结构，所述封头结构设置成用于打开或封闭所述烟机排风口。
  30. 根据权利要求1所述的吸油烟机，其特征在于，还包括：进风滤网，所述进风滤 网设置在所述蜗壳进风口处。
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