CN113310087A - Fume exhaust fan - Google Patents
Fume exhaust fan Download PDFInfo
- Publication number
- CN113310087A CN113310087A CN202110598826.2A CN202110598826A CN113310087A CN 113310087 A CN113310087 A CN 113310087A CN 202110598826 A CN202110598826 A CN 202110598826A CN 113310087 A CN113310087 A CN 113310087A
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- filter screen
- cover body
- range hood
- cover
- movable
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- 239000003517 fume Substances 0.000 title claims description 5
- 238000009423 ventilation Methods 0.000 claims abstract description 16
- 238000007790 scraping Methods 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000000779 smoke Substances 0.000 description 16
- 238000010411 cooking Methods 0.000 description 8
- 239000012530 fluid Substances 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- 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
- F24C15/2035—Arrangement or mounting of filters
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a range hood, which comprises a box body structure and a fan frame for arranging a fan system, wherein the box body structure is arranged below the fan frame and comprises a lower box body, a first air inlet and a second air inlet which are arranged at left and right intervals are formed in the lower box body, and a first cavity and a second cavity which are independent and used as air inlet cavities are formed in the lower box body; the range hood also comprises a first filter screen and a second filter screen which extend longitudinally, the first filter screen corresponds to the first chamber, and the second filter screen corresponds to the second chamber; the range hood also comprises a first movable cover connected with the first filter screen and a second movable cover connected with the second filter screen, and the first movable cover can lift relative to the first filter screen at the joint of the first movable cover and the first filter screen, so that the area of a ventilation area of the first filter screen below the joint of the first movable cover and the first filter screen is adjusted; the second movable cover can be lifted relative to the second filter screen at the joint of the second movable cover and the second filter screen, so that the area of a ventilation area below the joint of the second filter screen and the second movable cover is adjusted.
Description
Technical Field
The invention relates to an oil fume purification device, in particular to a range hood.
Background
Chinese cooking can generate a large amount of oil smoke, and in order to keep the kitchen environment clean and the human health, the range hood becomes one of indispensable kitchen household appliances in modern families. The range hood generally comprises a top suction type range hood and a side suction type range hood, and the top suction type range hood has more and more extensive application due to the advantages of being neat and light, small in occupied space, good in matching with a hanging cabinet, low in noise and the like.
The top-suction type range hood generally comprises a smoke collecting hood and a fan frame positioned on the smoke collecting hood, wherein a volute, an impeller and a motor for driving the impeller are installed in the fan frame, and an air inlet is arranged in the center of the smoke collecting hood and is directly connected with a high negative pressure area where the fan is located. The range hood has the problems of high wind speed and negative pressure at the air inlet of the smoke collecting hood and large negative pressure attenuation at the position far away from the air inlet. And this type of range hood can set up the filter screen in air intake department, and the oil smoke can filter the large granule (generally be greater than PM10) greasy dirt when passing through the filter screen, and inside reentrant range hood, then further filter remaining tiny particle greasy dirt through fan centrifugal force. If not set up the filter screen, then can lead to a large amount of large granule oil smoke to get into fan system, if the impeller of fan adheres to a large amount of oil smoke particles, then can destroy impeller dynamic balance, make range hood shake aggravation, the noise rises. The existing filter screens generally do not have self-cleaning capability, and can block an oil screen after long-term use, so that the air inlet resistance is increased, the smoking effect is reduced, and the filter screens usually need to be detached regularly for cleaning.
In addition, the burner of a common household cooker is usually divided into two parts, namely a left burner and a right burner, so that a user sometimes only uses one burner and sometimes uses two burners simultaneously in the cooking process, but the household cooker often only uses one burner to fry a large amount of oil smoke. If the user only uses the left furnace end to cook or uses the left side to cook and steam rice in the actual cooking process, then the left oil smoke concentration and the oil smoke particle potential of the range hood are necessarily much larger than those of the right side, so the situation that oil smoke escapes often occurs in the unilateral stir-fry cooking of the type is often solved by improving the rotating speed of the impeller, the total air volume of the range hood is increased, the increase of the total air volume can bring the simultaneous promotion of the left side air volume and the right side air volume, and the oil smoke absorption effect is further improved. However, the increase of the rotating speed of the impeller greatly increases the noise, the physical health of people is affected, the actual cooking is fried quickly and occurs on one side, and the air quantity is simultaneously increased on two sides to cause the energy consumption waste on the other side.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a range hood, which can adjust the distribution of flow on two sides and improve the range hood effect, aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes the box structure and is used for setting up the fan frame of fan system, the box structure sets up the below at the fan frame, the box structure includes box down, first air intake and the second air intake of controlling the interval arrangement, its characterized in that have been seted up on the box down:
a first cavity and a second cavity which are independent and used as air inlet cavities are formed in the lower box body, the first cavity corresponds to the first air inlet, and the second cavity corresponds to the second air inlet;
the range hood also comprises a first filter screen and a second filter screen which extend longitudinally, the first filter screen corresponds to the first chamber, and the second filter screen corresponds to the second chamber; the oil smoke entering from the first chamber and the second chamber can only pass through the ventilation area of the corresponding filter screen;
the range hood also comprises a first movable cover connected with the first filter screen and a second movable cover connected with the second filter screen, wherein the first movable cover can lift relative to the first filter screen at the joint of the first movable cover and the first filter screen, so that the area of a ventilation area below the joint of the first filter screen and the first movable cover is adjusted; the second movable cover can lift relative to the second filter screen at the joint of the second movable cover and the second filter screen, so that the area of a ventilation area below the joint of the second filter screen and the second movable cover is adjusted.
Preferably, for the convenience of setting up the filter screen, the top of at least one end is passed through stopper and box structural connection fixed around first filter screen and the second filter screen, constitutes the air outlet between the top of two filter screens.
The ventilation area of first filter screen is convenient for change, first movable cover includes the first cover body and the second cover body, the first cover body transversely extends, the second cover body longitudinal extension, the first cover body extends right by the left side of box structure, the second cover body extends downwards by the right-hand member portion of the first cover body, the first cover body is connected for rotating with the second cover body junction, the bottom and the first filter screen of the second cover body are connected, the axis of rotation of the first cover body, the second cover body extends in the front and back direction.
In order to facilitate self-cleaning of the first filter screen, the bottom of the second cover body is located on the left side of the first filter screen and is provided with a first oil scraping plate for scraping oil stains on the first filter screen, and the first oil scraping plate extends towards the first filter screen.
For making the left and right sides homoenergetic of first filter screen clear, set up the first logical groove that extends around on the first frizing, first filter screen passes first logical groove.
The ventilation area of the second filter screen is convenient to change, the second movable cover comprises a third cover body and a fourth cover body, the third cover body transversely extends, the fourth cover body longitudinally extends, the third cover body extends leftwards from the right side of the box structure, the fourth cover body extends downwards from the left end of the third cover body, the third cover body is rotatably connected with the fourth cover body at the joint, the bottom of the fourth cover body is connected with the second filter screen, and the rotating shaft of the third cover body and the fourth cover body extends in the front-back direction.
In order to facilitate self-cleaning of the second filter screen, the bottom of the fourth cover body is located on the right side of the second filter screen and is provided with a second oil scraping plate for scraping off oil stains on the second filter screen, and the second oil scraping plate extends towards the second filter screen.
The second scraper is provided with a second through groove extending from front to back, and the second filter screen penetrates through the second through groove.
For making the left and right sides homoenergetic of first filter screen clear, first oil leak hole has been seted up with the position that first filter screen corresponds to the bottom of box down, the second oil leak hole has been seted up with the position that the second filter screen corresponds to the bottom of box down, the below of box is provided with the oil cup down, the oil cup covers each oil leak hole.
Preferably, the first and second movable hoods are symmetrically arranged and move in opposite directions so that the total ventilation area of the first and second screens is constant.
Preferably, the range hood further comprises a movement mechanism for driving the first movable cover and the second movable cover to rotate in a linkage manner, the movement mechanism comprises a driving mechanism and a transmission mechanism, the transmission mechanism comprises a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod is driven by the driving mechanism to rotate, the second connecting rod is rotatably connected to the left end of the first connecting rod, the third connecting rod is rotatably connected to the right end of the first connecting rod, the rotating shafts of the first connecting rod, the second connecting rod and the third connecting rod extend in the front-rear direction, one end, far away from the first connecting rod, of the second connecting rod is slidably connected with the first movable cover to slide along the left-right direction, and one end, far away from the first connecting rod, of the third connecting rod is slidably connected with the second movable cover to slide along the left-right direction.
Preferably, the inside of box is provided with first baffle, second baffle and third baffle down, first baffle and second baffle interval arrangement about to all have certain interval with between the rear side of box down, the third baffle is connected between the rear end of first baffle and second baffle, first cavity is located the left side of first baffle, the second cavity is located the right side of second baffle, first filter screen and second filter screen are located third baffle rear side, and both sides are the butt respectively around both sides and the box structure relevant position around every filter screen.
In order to enable the movable cover to have enough movable space and enable the negative pressure region to move downwards, the box structure further comprises a middle box body positioned above the lower box body, and the bottom of the middle box body is connected with the rear side of the lower box body; and parts of the first movable cover and the second movable cover move in the middle box body.
Compared with the prior art, the invention has the advantages that: through the arrangement of the two air inlets and the corresponding filter screens, the area of a ventilation area of the filter screens can be changed by the corresponding movable covers, so that a scheme suitable for flow distribution of the left air inlet and the right air inlet is provided, the total air quantity does not need to be increased (namely the rotating speed of the impeller is not changed, the noise and the energy consumption are not increased), and the problem that the oil smoke absorption effect can be greatly improved on the same side of the corresponding range hood when single-side stir-frying cooking is carried out is solved; through the lift process of the relative filter screen of left/right frizing board, tentatively strike off the oil strain board greasy dirt with the frizing board and carry out the automatically cleaning to guarantee range hood even if long-term the use can not block up the oil net yet.
Drawings
FIG. 1 is a schematic view of a range hood according to an embodiment of the present invention;
fig. 2 is a schematic view of a range hood according to an embodiment of the present invention (viewed from bottom to top, different from the view shown in fig. 1);
FIG. 3 is a partial cross-sectional view of a range hood in accordance with an embodiment of the present invention;
fig. 4 is a cross-sectional view (transverse cross-section) of the lower case of the range hood according to the embodiment of the present invention;
fig. 5 is a schematic view of a partially exploded structure of the range hood according to the embodiment of the present invention;
FIG. 6 is an enlarged view of a portion I of FIG. 5;
FIG. 7 is an enlarged view of portion II of FIG. 5;
FIG. 8 is a sectional view of the hidden fan frame of the range hood according to the embodiment of the present invention;
FIG. 9 is a sectional rear view of the hidden fan frame of the range hood according to the embodiment of the present invention;
FIG. 10 is a cross-sectional rear view of the range hood according to the embodiment of the present invention hiding a large amount of intake air at the right side and a small amount of intake air at the left side of the blower housing;
FIG. 11 is a cross-sectional rear view of the range hood according to the embodiment of the present invention hiding a large amount of intake air from the right side and a small amount of intake air from the left side of the blower housing;
fig. 12 is a cross-sectional rear view of the range hood in the hidden fan frame of the embodiment of the present invention in a right side air intake state;
fig. 13 is a cross-sectional rear view of the range hood according to the embodiment of the present invention hiding the right side air intake state of the blower housing.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Referring to fig. 1 to 4, a range hood includes a box structure composed of an upper box 1, a middle box 2, and a lower box 3, and a fan frame 4, wherein the upper box 1 is disposed under the fan frame 4, and the length of the upper box in the left-right direction is greater than that of the fan frame 4. The upper box body 1, the middle box body 2 and the lower box body 3 are all hollow box bodies. The bottom of the rear side of the upper box body 1 is connected with the top of the middle box body 2, the bottom of the middle box body 2 is connected with the rear side of the lower box body 3, the upper box body 1 and the middle box body 2 are in fluid communication with each other, the middle box body 2 and the lower box body 3 are in fluid communication with each other, and the upper box body 1 is in fluid communication with the air frame 4. The sizes of the upper box body 1 and the lower box body 3 in the front and back direction are larger than that of the middle box body 2, the middle box body 2 is a box body with a thin structure in the front and back direction, namely, the sectional area is reduced when the lower box body 3 is transited to the middle box body 2, and the sectional area is increased when the middle box body 2 is transited to the upper box body 1. A fan system (not shown) is provided in the fan frame 4.
The front side of the fan frame 4 is positioned behind the front side of the upper box body 1. After the range hood is installed, the fan frame 4 is hidden on the back of the hanging cabinet, the front part of the upper box body 1 is flush with a door plate of the hanging cabinet, and the top of the upper box body 1 can be used as a bottom plate of the hanging cabinet, so that the range hood is matched with the hanging cabinet with good appearance consistency.
In the present embodiment, the upper case 1 and the intermediate case 2 are integrally formed. The upper box body 1 or the middle box body 2 or the upper box body 1 and the middle box body 2 are not arranged, and the fan frame 4 is directly connected with the lower box body 3.
The lower box 3 has a first air inlet 51 and a second air inlet 52 formed at the bottom thereof and spaced apart from each other in the left-right direction. The lower case 3 includes a top wall 31 and a bottom wall 32 spaced up and down, a front side wall 33 and a rear side wall 34 spaced front and rear, and a left side wall 35 and a right side wall 36 spaced left and right. Wherein, the rear end of the top wall 31 extends to the bottom front side of the middle box body 2, the front side wall 33 is connected between the front end parts of the top wall 31 and the bottom wall 32, the rear side wall 34 is connected between the rear side of the middle box body 2 and the rear end part of the bottom wall 32, the left side wall 35 is connected between the left end parts of the top wall 31, the bottom wall 32, the front side wall 33 and the rear side wall 34, and the right side wall 36 is connected between the right end parts of the top wall 31, the bottom wall 32, the front side wall 33 and the rear side wall 34. Preferably, the top wall 31 and the bottom wall 32 are horizontal, and the front side wall 33, the rear side wall 34, the left side wall 35 and the right side wall 36 are vertical, so that the lower casing 3 is a rectangular parallelepiped. The first air inlet 51 and the second air inlet 52 are opened in the bottom wall 32. The top wall 31 can be used for placing objects.
The lower box 3 is provided inside with a first baffle 37, a second baffle 38 and a third baffle 39, the first baffle 37 and the second baffle 38 are arranged at a left-right interval, and the size of the first baffle 37 and the second baffle 38 in the front-rear direction, which extend backward from the front side wall 33, is smaller than that of the left side wall 35 and the right side wall 36, i.e. there is a certain interval between the rear ends of the first baffle 37 and the second baffle 38 and the rear side wall 34. A third baffle 39 is connected between the rear ends of the first and second baffles 37 and 38, preferably flush with the front side of the intermediate box 2. The first intake vent 51 is located between the left sidewall 35 and the first baffle 37, and the second intake vent 52 is located between the right sidewall 36 and the first baffle 37. And a first baffle 37 and a second baffle 38 are connected between the top wall 31 and the bottom wall 32, respectively. The first baffle 37 and the second baffle 38 may be parallel to the left side wall 35 (right side wall 36), respectively.
Accordingly, the space on the left side of the first shutter 37 in the lower case 3 constitutes a first chamber Q1, the space on the right side of the second shutter 38 constitutes a second chamber Q2, and the first chamber Q1 and the second chamber Q2 constitute an intake chamber. The flow distribution cavity Q is formed between the first chamber Q1 and the second chamber Q2 in the box structure, the top of the flow distribution cavity Q is higher than the first chamber Q1 and the second chamber Q2, in this embodiment, the flow distribution cavity Q is located at the rear side of the third baffle 39, and the whole flow distribution cavity Q is located at the rear side inside the box structure. Here, "between the first chamber Q1 and the second chamber Q2" may be between the first chamber Q1 and the second chamber Q2, between the rear side of the first chamber Q1 and the second chamber Q2, or between the front side of the first chamber Q1 and the second chamber Q2. Alternatively, the flow distribution chamber Q may be located above the first chamber Q1 and the second chamber Q2 or at other locations.
Referring to fig. 3, 5-7, a first filter screen 61 and a second filter screen 62 are disposed at a portion corresponding to the middle box body 2 in the lower box body 3, the first filter screen 61 and the second filter screen 62 both extend in the longitudinal direction, and in addition, both the first filter screen and the second filter screen extend in the front-back direction, and the front end and the rear end of each filter screen respectively abut against the front side and the rear side of the corresponding position of the box body structure. The first screen 61 defines the left side of the flow distribution chamber Q, and the second screen 62 defines the right side of the flow distribution chamber Q. In this embodiment, the front ends of the first filter screen 61 and the second filter screen 62 are connected to the third baffle 39, the rear ends of the first filter screen 61 and the second filter screen 62 are connected to the rear sidewall 34 of the lower box 3, and the tops of the front and rear ends of the first filter screen 61 and the second filter screen 62 are connected and fixed with the lower box 3 or the middle box 2 through the limiting block 63. An air outlet 64 of the flow distribution chamber Q is formed between the top ends of the two screens.
The range hood further comprises a first movable hood 71 and a second movable hood 72, the first movable hood 71 comprises a first hood body 711 and a second hood body 712, and the second movable hood 72 comprises a third hood body 721 and a fourth hood body 722. The first housing 711 and the third housing 721 extend transversely and the second housing 712 and the fourth housing 722 extend longitudinally. The first cover 711 extends rightwards from the lower case 3 or the left side in the case above the lower case 3, the second cover 712 extends downwards from the right end of the first cover 711, and the joint of the first cover 711 and the second cover 712 is in a rotating connection, such as a hinge connection. The third cover 721 extends leftwards from the lower case 3 or the right side in the case above the lower case 3, the fourth cover 722 extends downwards from the left end of the third cover 721, and the connection between the third cover 721 and the fourth cover 722 is a rotary connection, such as a hinge connection. The rotation shafts of the first cover 711, the second cover 712, the third cover 721, and the fourth cover 722 all extend in the front-rear direction.
The bottom of the second cover 712 is located at the left side of the first screen 61 and is provided with a first oil scraping plate 81, and the first oil scraping plate 81 extends toward the first screen 61. The bottom of the fourth cover body 722 is located at the right side of the second filter screen 62 and is provided with a second oil scraping plate 82, and the second oil scraping plate 82 extends toward the second filter screen 62. The first oil scraping plate 81 is provided with a first through groove 811 extending forward and backward, and the second oil scraping plate 82 is provided with a second through groove 821 extending forward and backward. The first screen 61 passes through the first pass groove 811, and the second screen 62 passes through the second pass groove 821. Therefore, the first oil scraping plate 81 can scrape off the oil stains on the left and right sides of the first filter screen 61, and the second oil scraping plate 82 can scrape off the oil stains on the left and right sides of the second filter screen 62. Each filter screen can play a role in guiding the movement of the corresponding cover body (oil scraping plate). The first strainer 61 is located below the joint with the first movable hood 71 (first oil scraping plate 81), and the second strainer 62 is located below the joint with the second movable hood 72 (second oil scraping plate 82), constituting an effective ventilation area. The fumes entering from the first chamber Q1 and the second chamber Q2 can pass only from the ventilation zone of the respective sieve.
A first oil leakage hole 321 is formed in the bottom of the lower box 3 corresponding to the first filter screen 61, a second oil leakage hole 322 is formed in the bottom of the lower box 3 corresponding to the second filter screen 62, an oil cup 9 is arranged below the lower box 3, and the oil cup 9 covers the two oil leakage holes. The oil removed from each strainer can thus flow down through the respective oil drain holes into the oil cup 9 to be collected.
The range hood further comprises a movement mechanism for driving the first movable hood 71 and the second movable hood 72 to rotate, the movement mechanism comprises a driving mechanism 731 and a transmission mechanism, the driving mechanism 731 is preferably a motor, and the driving mechanism is fixedly connected with the middle box body 2, the upper box body 1 or the fan frame 4 through the mounting shell 732. The transmission mechanism includes a transmission shaft 733, a first link 734, a second link 735, and a third link 736. The transmission shaft 733 extends forward and backward and is connected directly or indirectly to the output end of the driving mechanism 731 to be rotatable around its axis. The transmission shaft 733 is fixedly connected to the first link 734, thereby driving the first link 734. The second link 735 is pivotally connected to the left end of the first link 734, the third link 736 is pivotally connected to the right end of the first link 734, and the pivoting axes of the second link 735 and the third link 736 are parallel to the first link 734 and both extend in the front-rear direction. The first housing 711 has a first base 713 on a top surface thereof, and one end of the second link 735 remote from the first link 734 is slidably coupled to the first base 713 so as to be slidable in the left-right direction. The top surface of the third cover 721 is provided with a second base 723, and one end of the third link 736 away from the first link 734 is slidably connected with the second base 723 and can slide along the left-right direction.
When two burners of two cookers cook simultaneously, through the control of actuating mechanism 731, make two frizing boards be located same height, if all be located the centre of corresponding filter screen, see fig. 8 and fig. 9, the ventilation area of two filter screens is the same this moment, and the flow of two air inlet chambers about this moment is the same, and the suction of two air intakes about this moment is the same.
Assuming that the right side of the cooking stove is stir-fried and cooked and the left side is steamed, as for the range hood, the amount of oil smoke on the right side is greater than that on the right side, see fig. 10 and 11, the driving mechanism 731 is controlled to rotate in the forward direction, so that the right end of the first connecting rod 734 rotates upward, the right end of the third cover 721 rotates upward, the third connecting rod 736 slides leftward relative to the second base 723, so that the fourth cover 722 is driven to rotate, and the bottom end of the fourth cover 722 and the second oil scraping plate 82 move upward along the second filter screen 62; the reverse driving process occurs at the left side so that the second oil scraping plate 81 moves down along the first screen 61. Accordingly, the portion of the first screen 61 blocked by the second cover 712 increases, the intake air area decreases, and the portion of the second screen 62 blocked by the fourth cover 722 decreases, the intake air area increases. According to the principle of fluid continuity, Q is V S, wherein Q is the air volume and V is the flow velocityAnd S is the ventilation area. Setting the total air quantity flowing through the oil filter plate to be QGeneral assemblyThe displacement of the second cover 712 relative to the first screen 61 and the displacement of the fourth cover 722 relative to the second screen 62 are equal, i.e. the total area of the air passing through the screens is constant. Because of QGeneral assemblyThe average wind speed flowing through the filter screen is not changed when the total area is not changed. That is, the left air volume Q is constant at the wind speedLeft side ofReduced right side air quantity QRight sideAnd correspondingly, the air volume of the first air inlet 51 on the left side of the range hood is reduced, and the air volume of the second air inlet 52 on the right side is increased, so that a better smoking effect is achieved when the left side is fried and cooked. Stir-frying on the left side and vice versa.
If only one side is cooking, the other side can be completely closed, see fig. 12 and 13, continuing the rotation on the basis of fig. 10 until the first scraper bar 81 reaches the bottom of the first sieve 61 and the second scraper bar 82 reaches the top of the second sieve 62, whereby the first chamber Q1 is closed.
In each of fig. 9, 11, and 13, the arrows indicate the lampblack flow paths. In the process that each oil scraping plate moves up and down relative to the corresponding filter screen, oil stains on each filter screen can be scraped simultaneously.
The first movable cover 71 and the second movable cover 72 are symmetrically arranged, in this embodiment, the moving mechanism enables the first movable cover 71 and the second movable cover 72 to rotate in a linkage manner, alternatively, the moving mechanisms can be respectively arranged so that the first movable cover 71 and the second movable cover 72 can rotate independently, as long as the strokes of the two movable covers are equal and opposite, that is, the total ventilation area of the first filter screen 61 and the second filter screen 62 is unchanged.
The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.
Claims (13)
1. The utility model provides a range hood, includes box structure and fan frame (4) that are used for setting up fan system, the box structure sets up the below at fan frame (4), the box structure includes box (3) down, first air intake (51) and second air intake (52) that interval arrangement about seted up on box (3) down, its characterized in that:
a first chamber (Q1) and a second chamber (Q2) which are independent air inlet chambers are formed in the lower box body (3), the first chamber (Q1) corresponds to the first air inlet (51), and the second chamber (Q2) corresponds to the second air inlet (52);
the range hood further comprises a first filter screen (61) and a second filter screen (62) which both extend longitudinally, the first filter screen (61) corresponds to the first chamber (Q1), and the second filter screen (62) corresponds to the second chamber (Q2); the fumes entering from the first chamber (Q1) and the second chamber (Q2) can only pass through the ventilation zone of the respective sieve;
the range hood further comprises a first movable cover (71) connected with the first filter screen (61) and a second movable cover (72) connected with the second filter screen (62), wherein the first movable cover (71) can lift relative to the first filter screen (61) at the joint of the first movable cover (71) and the first filter screen (61), so that the area of a ventilation area below the joint of the first filter screen (61) and the first movable cover (71) is adjusted; the second movable hood (72) can be raised and lowered relative to the second screen (62) at the junction with the second screen (62) to adjust the area of the vent area of the second screen (62) below the junction with the second movable hood (72).
2. The range hood of claim 1, wherein: the top of at least one end is passed through stopper (63) and box structural connection fixedly around first filter screen (61) and second filter screen (62), constitutes air outlet (64) between the top of two filter screens.
3. The range hood of claim 1, wherein: first movable cover (71) include first cover body (711) and the second cover body (712), first cover body (711) transversely extends, the second cover body (712) is vertically extended, first cover body (711) is extended by the left side of box structure right side, the second cover body (712) is extended downwards by the right-hand member portion of the first cover body (711), first cover body (711) and second cover body (712) junction are the rotation connection, the bottom and the first filter screen (61) of the second cover body (712) are connected, the axis of rotation of the first cover body (711), the second cover body (712) extends on the front and back direction.
4. The range hood of claim 3, wherein: the bottom of the second cover body (712) is located on the left side of the first filter screen (61) and is provided with a first oil scraping plate (81) used for scraping oil stains on the first filter screen (61), and the first oil scraping plate (81) extends towards the first filter screen (61).
5. The range hood of claim 4, wherein: set up first logical groove (811) that extend around on first frizing (81), first filter screen (61) pass first logical groove (811).
6. The range hood of claim 1, wherein: the second movable cover (72) comprises a third cover body (721) and a fourth cover body (722), the third cover body (721) extends transversely, the fourth cover body (722) extends longitudinally, the third cover body (721) extends leftwards from the right side of the box body structure, the fourth cover body (722) extends downwards from the left end part of the third cover body (721), the connection part of the third cover body (721) and the fourth cover body (722) is in rotary connection, the bottom of the fourth cover body (722) is connected with the second filter screen (62), and the rotary shafts of the third cover body (721) and the fourth cover body (722) extend in the front-rear direction.
7. The range hood of claim 6, wherein: the bottom of the fourth cover body (722) is positioned at the right side of the second filter screen (62) and is provided with a second oil scraping plate (82) used for scraping oil stains on the second filter screen (62), and the second oil scraping plate (82) extends towards the second filter screen (62).
8. The range hood of claim 7, wherein: and a second through groove (821) extending forwards and backwards is formed in the second oil scraping plate (82), and the second filter screen (62) penetrates through the second through groove (821).
9. The range hood according to any one of claims 1 to 8, wherein: first oil leakage holes (321) are formed in the positions, corresponding to the first filter screens (61), of the bottoms of the lower box bodies (3), second oil leakage holes (322) are formed in the positions, corresponding to the second filter screens (62), of the bottoms of the lower box bodies (3), oil cups (9) are arranged below the lower box bodies (3), and the oil cups (9) cover the oil leakage holes.
10. The range hood according to any one of claims 1 to 8, wherein: the first movable cover (71) and the second movable cover (72) are symmetrically arranged and move reversely.
11. The range hood of claim 10, wherein: the range hood further comprises a movement mechanism for driving the first movable hood (71) and the second movable hood (72) to rotate in a linkage manner, the movement mechanism comprises a driving mechanism (731) and a transmission mechanism, the transmission mechanism comprises a first connecting rod (734), a second connecting rod (735) and a third connecting rod (736), the first connecting rod (734) is driven by the driving mechanism (731) to rotate, the second connecting rod (735) is rotatably connected to the left end of the first connecting rod (734), the third connecting rod (736) is rotatably connected to the right end of the first connecting rod (734), the rotating shafts of the first connecting rod (734), the second connecting rod (735) and the third connecting rod (736) extend in the front-rear direction, one end, far away from the first connecting rod (734), of the second connecting rod (735 is slidably connected with the first movable hood (71) and can slide in the left-right direction, one end, far away from the first connecting rod (734) is slidably connected with the second movable hood (72) and can slide in the left-right direction, and one end, far away from the first connecting rod (734) is slidably connected with the second movable hood (72) and can slide in the left direction Sliding in the right direction.
12. The range hood according to any one of claims 1 to 8, wherein: the inside of lower box (3) is provided with first baffle (37), second baffle (38) and third baffle (39), interval arrangement about first baffle (37) and second baffle (38) to all have certain interval with between the rear side of lower box (3), third baffle (39) are connected between the rear end of first baffle (37) and second baffle (38), first cavity (Q1) are located the left side of first baffle (37), second cavity (Q2) are located the right side of second baffle (38), first filter screen (61) and second filter screen (62) are located third baffle (39) rear side, and the front and back both sides of every filter screen and the front and back both sides of box structure relevant position are the butt respectively.
13. The range hood of claim 12, wherein: the box structure also comprises a middle box body (2) positioned above the lower box body (3), and the bottom of the middle box body (2) is connected with the rear side of the lower box body (3); the first movable cover (71) and the second movable cover (72) are partially movable in the middle box body (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598826.2A CN113310087B (en) | 2021-05-31 | 2021-05-31 | Fume exhauster |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598826.2A CN113310087B (en) | 2021-05-31 | 2021-05-31 | Fume exhauster |
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| CN113310087B CN113310087B (en) | 2024-01-16 |
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| CN113639291A (en) * | 2021-08-31 | 2021-11-12 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113639292A (en) * | 2021-08-31 | 2021-11-12 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113719870A (en) * | 2021-08-31 | 2021-11-30 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113776100A (en) * | 2021-09-08 | 2021-12-10 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113834100A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113834101A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113834104A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113834103A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113834102A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
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| CN113639291A (en) * | 2021-08-31 | 2021-11-12 | 宁波方太厨具有限公司 | Range hood and control method thereof |
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| CN113834101A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113834100A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113834103A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113834102A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113776100B (en) * | 2021-09-08 | 2022-12-27 | 宁波方太厨具有限公司 | Range hood and control method thereof |
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| CN113834103B (en) * | 2021-09-08 | 2023-08-18 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113834100B (en) * | 2021-09-08 | 2023-09-15 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113834101B (en) * | 2021-09-08 | 2024-05-14 | 宁波方太厨具有限公司 | Range hood and control method thereof |
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