CN218328327U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises an air inlet component, a fan frame and a fan system arranged in the fan frame, wherein the air inlet component comprises a first air inlet structure and a second air inlet structure which are arranged on the left and the right, the fan frame comprises a frame body, the fan frame also comprises a first clapboard and a second clapboard which are arranged in the frame body, and the fan system is positioned between the two clapboards; a first air channel positioned between the first partition plate and the left side wall of the frame body and a second air channel positioned between the second partition plate and the right side wall of the frame body are separated from the fan frame body, the first air inlet structure is communicated with the first air channel in a fluid mode, and the second air inlet structure is communicated with the second air channel in a fluid mode; a first air duct outlet capable of changing the ventilation area is formed in the first partition plate, and a second air duct outlet capable of changing the ventilation area is formed in the second partition plate. Compared with the prior art, the utility model has the advantages of: through changing the ventilation area of two wind channel exports, can distribute the flow that the left and right sides got into, promote unilateral oil absorption cigarette effect.

Description

Cooking fume exhauster

Technical Field

The utility model relates to an oil smoke purifier, especially a range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

Present range hood, chinese utility model patent as 202123087499.9 discloses a range hood, including collection petticoat pipe and the fan frame of setting in collection petticoat pipe top, be formed with by the sunken collection smoke chamber structure of bottom to the top on the collection petticoat pipe, collection smoke chamber structure includes first collection smoke chamber and the second collection smoke chamber of controlling the interval setting, first collection smoke chamber is by left side to right side slope extension downwards gradually, second collection smoke chamber is by right side left side slope extension downwards gradually, range hood still includes the first air intake that corresponds first collection smoke chamber top and corresponds the second air intake that second collection smoke chamber top was seted up, range hood still includes the first cigarette board that corresponds first air intake setting and corresponds the second cigarette board that the second air intake set up.

The burner of common domestic cooking utensils usually divides two on the left and right sides, and the user is in the culinary art in-process, sometimes only uses the burner of one side, sometimes both sides use simultaneously, but the stir-fry that can produce a large amount of oil smoke often only in one of them side in the family cooks. If the user only uses the left burner to cook dishes or uses the left burner to cook and steam rice, the left oil smoke concentration and the oil smoke particle potential of the range hood are much larger than those of the right side, so that the oil smoke escape frequently during the quick cooking process. Like the range hood in the prior art, the flow of the left side and the right side cannot be adjusted, so that the common solution is to increase the rotation speed of the impeller, increase the total air volume of the range hood, and increase the total air volume to simultaneously increase the left side air volume and the right side air volume, thereby improving the oil smoke absorption effect. Obviously the promotion of impeller rotational speed will lead to the noise to increase by a wide margin, influences people healthy, and the stir-fry of actually cooking takes place in one side, and both sides promote the energy consumption waste that the amount of wind leads to one side in addition simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is not enough to above-mentioned prior art existence, provides a range hood, can distribute the flow that the left and right sides got into, promotes the unilateral oil absorption cigarette effect.

The utility model discloses the second technical problem that will solve is not enough to above-mentioned prior art existence, provides a range hood, can highly adjust the left and right sides air inlet to satisfy the suitability and the smoking effect problem that bring when cooking the use pan of co-altitude.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: the utility model provides a range hood, includes air inlet subassembly, fan frame and the fan system of setting in the fan frame, the air inlet subassembly is including controlling the first air inlet structure and the second air inlet structure of mutually independent of arranging, the fan frame includes support body, its characterized in that:

the fan frame also comprises a first partition plate and a second partition plate which are arranged in the frame body, and the fan system is positioned between the two partition plates; the fan frame is internally divided into a first air channel positioned between the first partition plate and the left side wall of the frame body and a second air channel positioned between the second partition plate and the right side wall of the frame body, the first air inlet structure is communicated with the first air channel in a fluid mode, and the second air inlet structure is communicated with the second air channel in a fluid mode;

a first air duct outlet capable of changing the ventilation area is formed in the first partition plate, and a second air duct outlet capable of changing the ventilation area is formed in the second partition plate.

Through setting up the independent wind channel about to change the draught area of wind channel export, can distribute the flow that the left and right sides got into, promote the unilateral oil absorption cigarette effect.

According to the utility model discloses an aspect, first wind channel exit department is provided with the first air door that can open and close first wind channel export to change the draught area of first wind channel export, second wind channel exit department is provided with the second air door that can open and close second wind channel export, thereby changes the draught area of second wind channel export.

Further, range hood still includes first motion, first motion includes electric putter, electric putter has the output shaft that extends and remove in the left and right directions, the left side tip of output shaft is provided with first connecting rod, the right side tip of output shaft is provided with the second connecting rod, the both ends of first connecting rod rotate with output shaft and first air door respectively and are connected, the both ends of second connecting rod rotate with output shaft and second air door respectively and are connected, and the axis of rotation of every connecting rod is the extension in the front and back direction, and the linkage of two air doors is realized to simple motion from this.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: first air inlet structure and second air inlet structure homoenergetic are gone up and down relatively the fan frame.

Greasy dirt in the wind channel oozes when avoiding the air inlet structure to go up and down, the lower extreme in first wind channel and second wind channel is uncovered, the cladding of first air inlet structure is outside first wind channel, the cladding of second air inlet structure is outside the second wind channel.

Preferably, the first air intake structure includes a first smoke collecting hood and a first pipeline disposed above the first smoke collecting hood, the first pipeline is disposed corresponding to the first air duct, the first smoke collecting hood is provided with a first air inlet, an upper end and a lower end of the first pipeline are respectively open, so that the first air inlet and the first air duct are in fluid communication, and a projection of the first air inlet on a horizontal plane is larger than that of the first pipeline;

the second air inlet structure includes second collection petticoat pipe and sets up the second pipeline on the second collection petticoat pipe, the second pipeline corresponds the setting of second wind channel, the second air intake has been seted up on the second collection petticoat pipe, the upper and lower both ends of second pipeline are uncovered respectively to make fluid intercommunication between second air intake and the second wind channel, the projection of second air intake on the horizontal plane is greater than the second pipeline. This ensures a sufficient range of smoke collection and avoids the need to squeeze the installation space of the fan system 3.

According to the utility model discloses a further aspect, the lower extreme in first wind channel and second wind channel is uncovered, thereby first wind channel lift relatively changes the draught area of first wind channel export through sheltering from first wind channel export when going up and down, thereby second wind channel lift relatively of structure changes the draught area of second wind channel export through sheltering from second wind channel export when going up and down. From this can adjust left and right sides air inlet height to satisfy the suitability and the smoking effect problem that bring when the cooking uses the not co-altitude pan, can utilize the air inlet structure of lift to change the draught area that the wind channel exported again, two problems of flow distribution and altitude mixture control are solved to simple structure.

Compared with the prior art, the utility model has the advantages of: by arranging the independent left air channel and the independent right air channel and changing the ventilation area of the air channel outlet, the flow entering from the left side and the right side can be distributed, and the single-side oil smoke absorption effect is improved; the air inlet structure can be adjusted in height in a lifting manner, so that the problems of adaptability and smoking effect caused by cooking using cookers with different heights can be solved; the ventilation area of the air duct outlet is changed by utilizing the lifting air inlet structure, and the two problems of flow distribution and height adjustment are solved by a simple structure.

Drawings

Fig. 1 is a schematic view of a range hood according to a first embodiment of the present invention;

fig. 2 is a sectional view of a range hood according to a first embodiment of the present invention;

fig. 3 is a sectional view (the section is parallel to fig. 2) of a range hood according to a first embodiment of the present invention;

fig. 4 is a schematic view illustrating the opening of the outlets of the air ducts at the two sides of the range hood according to the first embodiment of the present invention;

fig. 5 is a schematic view showing that the outlet of the left air duct and the outlet of the right air duct of the range hood according to the first embodiment of the present invention are opened;

fig. 6 is a sectional view of a range hood according to a second embodiment of the present invention.

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 "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the invention can be arranged in different orientations, these directional terms are for illustrative purposes only and should not be considered as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Example one

Referring to fig. 1 to 3, a range hood includes an air intake assembly, a fan frame 2, and a fan system 3 disposed in the fan frame 2, wherein the air intake assembly includes a first air intake structure 11 and a second air intake structure 12 which are disposed independently from each other, and preferably, the two air intake structures are the same and are symmetrically disposed.

The fan frame 2 comprises a frame body 21, a first partition plate 22 and a second partition plate 23 which are arranged in the frame body 21, so that a first air duct 24 which is positioned between the first partition plate 22 and the left side wall of the frame body 21 and a second air duct 25 which is positioned between the second partition plate 23 and the right side wall of the frame body 21 are separated from the interior of the fan frame 2, and the lower ends of the two air ducts are open. The fan system 3 is located between the two partitions. The first partition 22 is provided with a first air duct outlet 221, the second partition 23 is provided with a second air duct outlet 231, the first air duct outlet 221 is provided with a first air door 41, and the second air duct outlet 231 is provided with a second air door 42.

The range hood further comprises a first moving mechanism 43 for driving the first air duct outlet 221 to open and close by the first air door 41 and driving the second air duct outlet 231 to open and close by the second air door 42, and the two air doors can be driven by two independent moving mechanisms or by the same moving mechanism. Referring to fig. 4 and 5, in the present embodiment, the two dampers are driven by the same first movement mechanism 43, the first movement mechanism 43 includes an electric push rod 431 having an output shaft 432 extending in the left-right direction, a first link 433 is provided at a left end of the output shaft 432, a second link 434 is provided at a right end of the output shaft 432, both ends of the first link 433 are rotatably connected to the output shaft 432 and the first damper 41, respectively, and both ends of the second link 434 are rotatably connected to the output shaft 432 and the second damper 42, respectively. The rotation axis of each link extends in the front-rear direction. When the output shaft 432 translates left and right, the first damper 41 can be driven by the first link 433 to flip relative to the first partition 22, thereby opening and closing the first air duct outlet 221, while the second damper 42 can be driven by the second link 434 to flip relative to the second partition 23, thereby opening and closing the second air duct outlet 231. In this embodiment, two output shafts 432 are connected, so that when the damper on one side is opened to the maximum, the damper on the other side is just closed.

Alternatively, any movement mechanism that can drive each damper to move relative to the corresponding partition plate may be used, and the movement of the damper may be, for example, turning, translation, etc. as in this embodiment, as long as the corresponding duct outlet can be opened and closed by moving.

The first air intake structure 11 includes a first air collecting hood 111 and a first duct 112 disposed on the first air collecting hood 111, the first duct 112 is covered outside the first air duct 24 (for example, a side wall of the first duct 112 may be inserted into an interlayer of a wall of the fan frame 2, and a wall corresponding to the first partition plate 22 may enter the fan frame 2 through the bottom of the fan frame 2), and on the first air collecting hood 111, as preferred, a first air inlet 113 is opened at the bottom of the first air collecting hood 111, and upper and lower ends of the first duct 112 are respectively opened, so that the first air inlet 113 and the first air duct 24 are in fluid communication. Similarly, the second air intake structure 12 includes a second hood 121 and a second duct 122 disposed on the second hood 121, the second duct 122 may be wrapped outside the second air duct 25 (for example, the side wall of the second duct 122 may be inserted into an interlayer of the wall of the fan frame 2, and the wall corresponding to the second partition 23 may enter the fan frame 2 through the bottom of the fan frame 2), and on the second hood 121, as preferred, the second air intake 123 is disposed at the bottom of the second hood 121, and the upper end and the lower end of the second duct 122 are respectively open, so that the second air intake 123 and the second air duct 25 are in fluid communication. Alternatively, the first conduit 112 may extend into the first air chute 24 and the second conduit 122 may extend into the second air chute 25, so long as the first conduit 112 corresponds to and is in fluid communication with the first air chute 24 and the second conduit 122 corresponds to and is in fluid communication with the second air chute 25.

The projection of the first air inlet 113 on the horizontal plane is larger than that of the first pipeline 112, and the projection of the second air inlet 123 on the horizontal plane is larger than that of the second pipeline 122. Therefore, the sufficient smoke collecting range can be ensured, and the extrusion of the installation space of the fan system 3 is avoided.

The first air inlet structure 11 and the second air inlet structure 12 may also adopt other existing air inlet forms as long as the air inlets can respectively cover the corresponding air channels and can be lifted. The rising limit positions of the first air inlet structure 11 and the second air inlet structure 12 are lower than the lower edge of the corresponding air duct outlet so as to avoid interference with each air door.

The range hood further comprises a second movement mechanism 5 for driving the first air inlet structure 11 and the second air inlet 12 to ascend and descend, in this embodiment, each air inlet structure has an independent second movement mechanism 5, the second movement mechanism 5 is a linear driving module, and in this embodiment, the range hood comprises a motor 51 fixed in the fan frame 2, a screw rod 52 driven by the motor 51 to rotate around an axis of the screw rod 52, and a nut 53 sleeved on the screw rod 52, the motor 51 can be fixed outside the fan frame 2, the screw rod 52 extends up and down, and the nut 53 is in threaded connection with the screw rod 52. The nut 53 is connected to the corresponding air intake structure (in this embodiment, the first duct 112 and the second duct 122) as an output end of the second moving mechanism 5, so that the corresponding air intake structure can be driven to ascend and descend. The first duct 112 and the second duct 122 thus constitute a telescopic duct, and the space formed therein constitutes a telescopic air duct.

Through the lift of two air inlet structures to the not pan of co-altitude of adaptation, as shown in fig. 3, carry out highly lower frying pan culinary art when the cooking utensils left side, the cooking utensils right side carries out highly higher steamer culinary art, then first air inlet structure 11 descends to lower position to satisfy the smoking effect of frying in shallow oil the stir-fry culinary art, and second air inlet structure 12 can rise to higher position, in order to satisfy the culinary art demand of steamer.

When two air inlet structures all need to admit air about, open two air doors equidistance, output shaft 432 was placed in the middle this moment. When the left side air inlet needs to be lifted, at this time, the output shaft 432 moves leftwards, the opening angle of the first air door 41 becomes larger, and the opening angle of the second air door 42 becomes smaller, as shown in fig. 4. According to the principle of fluid continuity, under the condition that the total air volume is not changed, the ventilation area on the left side is increased, the air volume is increased, the ventilation area on the right side is correspondingly reduced, and the air volume on the left side is increased. Referring to fig. 5, when only smoking on the left side is needed, the first damper 41 is fully opened, and at this time, the second damper 42 is fully closed, so that the air volume completely passes through the first damper 41, that is, the left air volume is the largest at this time, and the smoking effect is the best.

The height of the smoke collecting hood and the degree of opening of the air door required by other different cooking states can be achieved after similar motions are carried out according to requirements.

Example two

Referring to fig. 6, the present embodiment is different from the above embodiments in that two dampers and the first moving mechanism 43 are not provided, and the change of the ventilation area of the outlet of the corresponding air duct is realized by directly using the lifting and lowering of each duct.

As shown in FIG. 6, the first air intake structure 11 on the left side is lowered at the lowest position at this time, and the first duct outlet 221 is fully exposed, at which the ventilation area is the largest. And the right second air intake structure 12 rises to the middle position, the second air duct 221 is partially exposed (partially shielded by the wall surface of the duct), and the ventilation area is reduced relative to the left side. By parity of reasoning, when the air inlet structure rises to the highest position, the corresponding air duct outlet is completely closed.

Suppose, when the left side needs to promote the smoking effect, the second air inlet 12 on the right side is raised, and at this time, the total air inlet area is reduced, according to the fluid continuity principle, Q = S × V, and under the condition that the total air volume remains unchanged, the total area is reduced, and then the average air speed is increased. And the ventilation area of the left first air duct outlet 221 is unchanged, the air speed is increased, the left air volume is increased, and the total air volume is unchanged, namely the right air volume is reduced. That is, the right air volume is properly distributed to the left side, and the left air volume is increased, so that the smoking effect of the left side is improved.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter, referred to as a first portion and a second portion) in a unified manner, i.e., a fluid (gas, liquid or a mixture thereof) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide member, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.

Claims (8)

1. The utility model provides a range hood, includes air inlet subassembly, fan frame (2) and fan system (3) of setting in fan frame (2), the air inlet subassembly is including controlling the first air inlet structure (11) and the second air inlet structure (12) of mutually independent that arranges, fan frame (2) are including support body (21), its characterized in that:

the fan frame (2) further comprises a first partition plate (22) and a second partition plate (23) which are arranged in the frame body (21), and the fan system (3) is located between the two partition plates; the fan frame (2) is internally divided into a first air duct (24) positioned between the first partition plate (22) and the left side wall of the frame body (21) and a second air duct (25) positioned between the second partition plate (23) and the right side wall of the frame body (21), the first air inlet structure (11) is communicated with the first air duct (24) in a fluid mode, and the second air inlet structure (12) is communicated with the second air duct (25) in a fluid mode;

a first air duct outlet (221) capable of changing the ventilation area is formed in the first partition plate (22), and a second air duct outlet (231) capable of changing the ventilation area is formed in the second partition plate (23).

2. The range hood of claim 1, wherein: a first air door (41) capable of opening and closing the first air duct outlet (221) is arranged at the first air duct outlet (221), so that the ventilation area of the first air duct outlet (221) is changed, and a second air door (42) capable of opening and closing the second air duct outlet (231) is arranged at the second air duct outlet (231), so that the ventilation area of the second air duct outlet (231) is changed.

3. The range hood of claim 2, wherein: the range hood further comprises a first movement mechanism (43), the first movement mechanism (43) comprises an electric push rod (431), the electric push rod (431) is provided with an output shaft (432) extending and moving in the left-right direction, a first connecting rod (433) is arranged at the left end of the output shaft (432), a second connecting rod (434) is arranged at the right end of the output shaft (432), two ends of the first connecting rod (433) are respectively rotatably connected with the output shaft (432) and a first air door (41), two ends of the second connecting rod (434) are respectively rotatably connected with the output shaft (432) and a second air door (42), and the rotation axis of each connecting rod extends in the front-back direction.

4. The range hood according to any one of claims 1 to 3, wherein: the first air inlet structure (11) and the second air inlet structure (12) can lift relative to the air blower frame (2).

5. The range hood of claim 4, wherein: the lower extreme in first wind channel (24) and second wind channel (25) is uncovered, first air inlet structure (11) cladding is outside first wind channel (24), second air inlet structure (12) cladding is outside second wind channel (25).

6. The range hood of claim 4, wherein: the first air inlet structure comprises a first fume collecting hood (111) and a first pipeline (112) arranged on the first fume collecting hood (111), the first pipeline (112) is arranged corresponding to the first air duct (24), a first air inlet (113) is formed in the first fume collecting hood (111), the upper end and the lower end of the first pipeline (112) are respectively open, so that the first air inlet (113) is communicated with the first air duct (24) in a fluid mode, and the projection of the first air inlet (113) on the horizontal plane is larger than that of the first pipeline (112);

the second air inlet structure (12) comprises a second fume collecting hood (121) and a second pipeline (122) arranged on the second fume collecting hood (121), the second pipeline (122) is arranged corresponding to the second air duct (25), a second air inlet (123) is formed in the second fume collecting hood (121), the upper end and the lower end of the second pipeline (122) are respectively open, so that the second air inlet (123) is communicated with the second air duct (25) through fluid, and the projection of the second air inlet (123) on the horizontal plane is larger than the second pipeline (122).

7. The range hood of claim 1, wherein: the lower extreme in first wind channel (24) and second wind channel (25) is uncovered, thereby first air inlet structure (11) can go up and down relatively first wind channel (24) and change the draught area of first wind channel export (221) through sheltering from first wind channel export (221) when going up and down, thereby second air inlet structure (12) can go up and down relatively second wind channel (25) and change the draught area of second wind channel export (231) through sheltering from second wind channel export (231) when going up and down.

8. The range hood of claim 7, wherein: the first air inlet structure comprises a first fume collecting hood (111) and a first pipeline (112) arranged on the first fume collecting hood (111), the first pipeline (112) is arranged corresponding to the first air duct (24), a first air inlet (113) is formed in the first fume collecting hood (111), the upper end and the lower end of the first pipeline (112) are respectively open, so that the first air inlet (113) is communicated with the first air duct (24) in a fluid mode, and the projection of the first air inlet (113) on the horizontal plane is larger than that of the first pipeline (112);

the second air inlet structure (12) comprises a second exhaust fume collecting hood (121) and a second pipeline (122) arranged on the second exhaust fume collecting hood (121), the second pipeline (122) is arranged corresponding to the second air duct (25), a second air inlet (123) is formed in the second exhaust fume collecting hood (121), the upper end and the lower end of the second pipeline (122) are respectively open, so that the second air inlet (123) is communicated with the second air duct (25) through fluid, and the projection of the second air inlet (123) on the horizontal plane is larger than that of the second pipeline (122).

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