CN212511304U - Internal circulation range hood - Google Patents

Abstract

The utility model relates to a smoke ventilator technical field especially relates to an inner loop lampblack absorber, this inner loop lampblack absorber includes the collection petticoat pipe, bellows and fan, the collection petticoat pipe has the air inlet, bellows setting is in the top of collection petticoat pipe, be formed with the wind channel in the bellows, the fan sets up in bellows, wherein along oil smoke flow direction, the inner loop lampblack absorber is equipped with one-level filter unit in proper order, second grade filter unit and tertiary filter unit, one-level filter unit, second grade filter unit and tertiary filter unit can be respectively by big to little granular impurities who filters the oil smoke in grades. This inner loop lampblack absorber can be through one-level filter unit, second grade filter unit and tertiary filter unit respectively by big to little grading filtration oil smoke's particle impurity, the big or small particle impurity of abundant filtration oil smoke, have to oil smoke purifying effect good, be suitable for the advantage in chinese style kitchen.

Description

Internal circulation range hood

Technical Field

The application relates to the technical field of range hoods, in particular to an internal circulation range hood.

Background

The range hood is a common kitchen appliance in daily life, and most people can exhaust the oil smoke to the outside by installing the range hood and through an external exhaust pipeline so as to solve the problem of the oil smoke in the kitchen.

The western is generally inclined to cook food materials at low temperature, and the oil smoke is less, so the internal circulation range hood is mainly used in the western, the internal circulation range hood in the prior art adopts the fan centrifugal separation and the activated carbon filter screen adsorption filtration for oil smoke treatment, and the domestic cooking mode is mostly inclined to Chinese style stir-frying, so the oil smoke is generated greatly, and the oil smoke purification effect is not ideal.

Disclosure of Invention

In view of this, the application provides an inner loop lampblack absorber for solve the problem that inner loop lampblack absorber oil smoke purifying effect among the prior art is too ideal, is not suitable for chinese kitchen.

The internal circulation range hood provided by the application comprises a smoke collecting hood, an air box and a fan;

the fume collecting hood is provided with an air inlet;

the air box is arranged above the smoke collecting hood, and an air channel is formed in the air box;

the fan is arranged in the air box;

wherein, along oil smoke flow direction, the inner loop lampblack absorber is equipped with one-level filter unit, second grade filter unit and tertiary filter unit in proper order, one-level filter unit second grade filter unit with tertiary filter unit can be in proper order by big to little stage filtration respectively the particle impurity of oil smoke.

In one possible design, along the oil smoke flowing direction, the first-stage filtering unit and the second-stage filtering unit are sequentially arranged at the upstream of the fan, and the third-stage filtering unit is arranged at the downstream of the fan.

In one possible design, the primary filtration unit comprises a cyclone;

the cyclone separator is arranged at the air inlet of the fume collecting hood.

In one possible design, the secondary filtration unit comprises an electrostatic screen;

the static filter screen set up in bellows, just the air intake of static filter screen with the gas outlet intercommunication of collection petticoat pipe, the air outlet of static filter screen with the air intake intercommunication of fan.

In one possible design, a rectifying plate is further arranged between the cyclone separator and the electrostatic filter screen, and the rectifying plate is arranged at the inlet of the air duct.

In a possible design, the electrostatic filter is provided in plurality, and the plurality of electrostatic filters are stacked in the oil smoke flowing direction.

In one possible design, the tertiary filtration unit includes a HEPA screen.

In one possible design, the HEPA screens are at least two, and two of the HEPA screens are stacked.

In one possible design, the internal circulation range hood further comprises an air outlet part;

the air-out portion pass through the hose with the air outlet of bellows is connected, just the HEPA filter screen set up in the import department of air-out portion.

In one possible design, the HEPA filter screen is detachably connected with the air outlet portion.

In one possible design, the air outlet part is also provided with an active carbon filter screen;

along oil smoke flow direction, the active carbon filter screen set up in the low reaches of HEPA filter screen, just the lateral wall of active carbon filter screen forms the air outlet of air-out portion.

In one possible design, the cyclone separator comprises a plurality of cyclone tubes arranged in parallel, and the cyclone tubes are obliquely arranged along the height direction;

the air inlet of the cyclone separator is arranged on the side wall of the cyclone tube, and a first outlet and a second outlet are formed at the upper end and the lower end of the cyclone tube respectively;

wherein, the first outlet is communicated with the air inlet of the fume collecting hood.

In a possible design, the second outlet is an oil outlet, and an oil cup for containing grease flowing out of the oil outlet is arranged at the bottom of the fume collecting hood.

By combining the technical scheme, the beneficial effects of the method are analyzed as follows:

the internal circulation range hood provided by the application comprises a smoke collecting hood, an air box and a fan; the fume collecting hood is provided with an air inlet; the air box is arranged above the smoke collecting hood, and an air channel is formed in the air box; the fan is arranged in the air box; wherein, along oil smoke flow direction, the inner loop lampblack absorber is equipped with one-level filter unit, second grade filter unit and tertiary filter unit in proper order, and one-level filter unit, second grade filter unit and tertiary filter unit can be respectively by big to little graded filter oil smoke's particle impurity in proper order.

This inner loop lampblack absorber is when using, and the centrifugal action of fan makes the air inlet department of collection petticoat pipe form the negative pressure, and the oil smoke gets into bellows through collection petticoat pipe, and one-level filter unit, second grade filter unit and tertiary filter unit are in proper order respectively by big-to-small particle impurity of hierarchical filtration oil smoke in this in-process, and the big small particle impurity of abundant filtration oil smoke has the advantage that is good, be suitable for chinese style kitchen to the oil smoke purifying effect.

Additional features and advantages of embodiments of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of embodiments of the present application. The objectives and other advantages of the embodiments of the application will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

FIG. 1 is an overall sectional view of an internal circulation range hood provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an internal circulation range hood provided by an embodiment of the application;

FIG. 3 is a schematic structural diagram of an electrostatic filter screen in the internal circulation range hood provided by the embodiment of the application;

fig. 4 is a schematic structural diagram of a rectifying plate in an internal circulation range hood provided in the embodiment of the present application;

fig. 5 is a schematic structural diagram of a cyclone separator in an internal circulation range hood provided by an embodiment of the application.

FIG. 6 is a sectional view in the direction B-B of the cyclone separator shown in FIG. 5.

Reference numerals:

1-a smoke collecting hood;

11-an oil cup;

2-an air box;

3, a fan;

4-a cyclone separator;

41-cyclone tube;

411-air inlet;

412-a first outlet;

413-a second outlet;

5-electrostatic filtering net;

6-HEPA filter screen;

7-air outlet part;

71-an active carbon filter screen;

8-rectifying plate.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The following describes a specific embodiment of an internal circulation range hood according to the structure of the internal circulation range hood provided by the embodiment of the application.

FIG. 1 is an overall sectional view of an internal circulation range hood provided in an embodiment of the present application; FIG. 2 is a schematic structural diagram of an internal circulation range hood provided by an embodiment of the application; FIG. 3 is a schematic structural diagram of an electrostatic filter screen in the internal circulation range hood provided by the embodiment of the application; fig. 4 is a schematic structural diagram of a rectifying plate in an internal circulation range hood provided in the embodiment of the present application; fig. 5 is a schematic structural diagram of a cyclone separator in an internal circulation range hood provided by an embodiment of the application. FIG. 6 is a sectional view in the direction B-B of the cyclone separator shown in FIG. 5.

As shown in fig. 1 to 6, an embodiment of the present application provides an internal circulation range hood, which includes a smoke collecting hood 1, a wind box 2 and a fan 3; the smoke collecting hood 1 is provided with an air inlet; the air box 2 is arranged above the smoke collecting hood 1, and an air channel is formed in the air box 2; the fan 3 is arranged in the air box 2; wherein, along oil smoke flow direction, the inner loop lampblack absorber is equipped with one-level filter unit, second grade filter unit and tertiary filter unit in proper order, and one-level filter unit, second grade filter unit and tertiary filter unit can be respectively by big to little graded filter oil smoke's particle impurity in proper order.

This inner loop lampblack absorber is when using, and fan 3's centrifugal action makes the air inlet department of collection petticoat pipe 1 form the negative pressure, and the oil smoke gets into bellows 2 through collection petticoat pipe 1, and one-level filter unit, second grade filter unit and tertiary filter unit are in proper order respectively by big to little particle impurity of hierarchical filtration oil smoke in this in-process, fully filter oil smoke impurity, have to oil smoke purifying effect good, be suitable for the advantage in chinese style kitchen.

In the alternative of this embodiment, along oil smoke flow direction, one-level filter unit, second grade filter unit set gradually in the upper reaches of fan 3, and tertiary filter unit sets up in the low reaches of fan 3.

Because the primary filtering unit, the secondary filtering unit and the tertiary filtering unit can respectively and sequentially filter the particle impurities of the oil smoke from large to small, the primary filtering unit and the secondary filtering unit are arranged at the upstream of the fan 3 to filter the larger particle impurities in the oil smoke to enter the fan 3 first, so that the larger particle impurities are prevented from entering the fan 3 to damage fan blades of the fan 3; the three-stage filtering unit is arranged at the downstream of the fan 3, so that the influence on the air inlet speed of the air inlet of the fan 3 can be reduced.

In an alternative of this embodiment, the primary filtering unit comprises a cyclone 4; the cyclone separator 4 is arranged at the air inlet of the fume collecting hood 1.

Specifically, as shown in fig. 1 and 5, the cyclone separator 4 makes solid particles or liquid droplets having a larger inertial centrifugal force in the soot thrown to the inner wall of the cyclone tube 41 and accumulated by the rotational motion caused by the tangential introduction of the soot, thereby achieving the function of filtering and separating from the soot. The cyclone separator 4 has the advantages of simple structure, large operation flexibility and high efficiency.

In the alternative of this embodiment, second grade filter unit includes electrostatic filter 5, and electrostatic filter 5 sets up in bellows 2, and electrostatic filter 5's air intake and the gas outlet intercommunication of collection petticoat pipe 1, and electrostatic filter 5's air outlet and the air intake intercommunication of fan 3.

Specifically, as shown in fig. 1 and 3, the electrostatic filter 5 can charge dust particles in the soot by using a high-voltage electrostatic field, and then the dust particles are captured and collected by the dust-collecting filter of the electrostatic filter 5 under the action of the electric field force, and the purified gas passes through the electrostatic filter 5 and continues to flow along the flow direction of the soot. The electrostatic filter screen 5 has the advantages of large flue gas treatment capacity, low equipment fluid resistance and good adaptability to flue gas concentration and particle size dispersion degree.

In an alternative of this embodiment, a rectifying plate 8 is further disposed between the cyclone 4 and the electrostatic filter 5, and the rectifying plate 8 is disposed at the inlet of the air duct.

Specifically, as shown in fig. 1, a plurality of evenly distributed rectifying holes are formed in the rectifying plate 8, the rectifying plate 8 is arranged between the cyclone separator 4 and the electrostatic filter screen 5, the flow velocity and the flow distribution of oil smoke which flows out of the cyclone separator 4 and is about to enter the electrostatic filter screen 5 are more uniform, and the electrostatic filter screen 5 is more favorable for filtering and removing impurities from the oil smoke. In addition, the rectifying plate 8 can also play a certain role in filtering large-particle impurities.

In an alternative of this embodiment, the electrostatic filter 5 is provided in plurality in layers, and the plurality of electrostatic filters 5 are stacked in the soot flow direction.

Specifically, as shown in fig. 1, the electrostatic filter 5 may be provided with two layers, so that the oil smoke can be secondarily adsorbed and filtered by the electric field force of the electrostatic filter 5, and dust particles in the oil smoke can be sufficiently removed.

Of course, the electrostatic filter 5 may be provided with three or more layers.

In an alternative of this embodiment, the tertiary filtration unit comprises a HEPA screen 6.

HEPA Filter screen 6(High efficiency particulate air Filter), also known as High efficiency air cleaner, refers to the Filter screen that reaches the HEPA standard, reaches 99.7% to the particle impurity effective rate of 0.1 micron and 0.3 micron, HEPA Filter screen 6's characteristics are that the air can pass through, but tiny particle can't pass through, is the most effective filtration media of pollutants such as smog, dust and bacterium. Set up HEPA filter screen 6 in the low reaches of fan 3 along oil smoke flow direction, can make the oil smoke filter reentrant HEPA filter screen 6 after great dust particle through cyclone 4, electrostatic filter screen 5 earlier like this and filter, when fully improving the filter effect to the oil smoke, can also avoid great dust particle to get into HEPA filter screen 6 in the oil smoke, cause HEPA filter screen 6 to block up the inefficacy.

In an alternative of this embodiment, the HEPA filters 6 are at least two, and two HEPA filters 6 are stacked.

In a similar way, with HEPA filter screen 6 range upon range of setting two, can carry out the secondary through HEPA filter screen 6 tiny particle in to the oil smoke and fully filter, fully get rid of the tiny granule in the oil smoke.

Of course, three or more HEPA filter screens 6 can be arranged.

In the alternative of this embodiment, the inner loop lampblack absorber still includes air-out portion 7, and air-out portion 7 passes through the hose to be connected with the air outlet of bellows 2, and HEPA filter screen 6 sets up in the import department of air-out portion 7.

Specifically, as shown in fig. 1, because this inner loop lampblack absorber exhausts indoor, is connected the air outlet of 7 hoses in air-out portion and bellows 2, can set up the position of air-out portion 7 through the hose is nimble like this, makes this inner loop lampblack absorber more can be fit for installing in different house types, and the flexibility of use is higher.

In the alternative of this embodiment, HEPA filter screen 6 can dismantle with air-out portion 7 and be connected.

Set up HEPA filter screen 6 in the import department of air-out portion 7, can conveniently change HEPA filter screen 6 like this, when changing, directly dismantle air-out portion 7 from the hose, again with HEPA filter screen 6 from air-out portion 7 dismantle can.

Specifically, can offer a slot that is used for installing HEPA filter screen 6 at the lateral wall of air-out portion 7, with HEPA filter screen 6 sealed pull's mode demountable installation in the slot of air-out portion 7.

In the alternative of this embodiment, the air outlet part 7 is further provided with an activated carbon filter screen 71; along the oil smoke flowing direction, the activated carbon filter screen 71 is arranged at the downstream of the HEPA filter screen 6, and the side wall of the activated carbon filter screen 71 forms an air outlet of the air outlet part 7.

The activated carbon filter screen 71 has excellent adsorption and deodorization capabilities, and can adsorb and deodorize and purify the smoke filtered by the HEPA filter screen 6 again, so that the air outlet part 7 finally discharges odorless gas.

In an alternative of this embodiment, the cyclone 4 includes a plurality of cyclone tubes 41 arranged in parallel, and the cyclone tubes 41 are arranged obliquely in the height direction; wherein, the air inlet 411 of the cyclone separator 4 is arranged on the side wall of the cyclone tube 41, and the upper and lower ends of the cyclone tube 41 respectively form a first outlet 412 and a second outlet 413; wherein, the first outlet 412 is communicated with the air inlet of the fume collecting hood 1.

Specifically, as shown in fig. 5 and 6, the cyclone tube 41 is arranged in an inclined manner along the height direction, so that when the cyclone tube 41 sucks in oil smoke, the oil smoke can be retained in the cyclone tube 41 in a rotating and centrifugal manner for a longer time, which is more beneficial to the accumulation of particulate impurities and cooled oil smoke on the inner wall of the cyclone tube 41, and the oil smoke is filtered and separated from the oil smoke, the first outlet 412 at the upper end of the cyclone tube 41 communicates with the air inlet of the smoke collection cover 1, a negative pressure is formed at the air inlet of the smoke collection cover 1 under the centrifugal action of the fan 3, and the oil smoke in the cyclone tube 41 rotates upwards to flow to the smoke collection cover 1.

In an alternative of this embodiment, the second outlet 413 is an oil outlet, and the bottom of the smoke collecting cover 1 is provided with an oil cup 11 for receiving oil flowing out from the oil outlet.

Since the particulate impurities and the cooled soot are accumulated on the inner wall of the cyclone tube 41, when the particulate impurities and the cooled soot are accumulated to a certain extent, the particulate impurities and the cooled soot flow toward the second outlet 413 of the cyclone tube 41 under the action of gravity and finally flow into the oil cup 11 through the second outlet 413, so that the soot is collected.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

It should be pointed out that the features of the dependent claims can be combined with each other and with the features of the independent claims in any way without departing from the concept of the present application.

Claims (13)

1. An inner loop lampblack absorber, its characterized in that includes:

the exhaust fume collecting hood (1), the exhaust fume collecting hood (1) is provided with an air inlet;

the air box (2) is arranged above the smoke collecting hood (1), and an air channel is formed in the air box (2);

the fan (3) is arranged in the air box (2);

wherein, along oil smoke flow direction, the inner loop lampblack absorber is equipped with one-level filter unit, second grade filter unit and tertiary filter unit in proper order, one-level filter unit second grade filter unit with tertiary filter unit can be in proper order by big to little stage filtration respectively the particle impurity of oil smoke.

2. An internal circulation range hood according to claim 1, characterized in that along the oil smoke flow direction, the primary filter unit and the secondary filter unit are arranged at the upstream of the fan (3) in sequence, and the tertiary filter unit is arranged at the downstream of the fan (3).

3. An internal circulation hood according to claim 1, characterized in that said primary filtering unit comprises a cyclone (4);

the cyclone separator (4) is arranged at the air inlet of the fume collecting hood (1).

4. An internal circulation hood according to claim 3, characterized in that said secondary filtering unit comprises an electrostatic sieve (5);

electrostatic filter screen (5) set up in bellows (2), just the air intake of electrostatic filter screen (5) with the gas outlet intercommunication of collection petticoat pipe (1), the air outlet of electrostatic filter screen (5) with the air intake intercommunication of fan (3).

5. An internal circulation range hood according to claim 4, characterized in that a rectifying plate (8) is further arranged between the cyclone separator (4) and the electrostatic filter screen (5), and the rectifying plate (8) is arranged at the inlet of the air duct.

6. An internal circulation range hood according to claim 4, characterized in that the electrostatic filter screens (5) are provided in plurality, and the plurality of electrostatic filter screens (5) are arranged in a stacked manner in a flow direction of oil smoke.

7. An internal circulation hood according to claim 1, characterized in that said tertiary filtering unit comprises a HEPA screen (6).

8. An internal circulation range hood according to claim 7, characterized in that the HEPA screens (6) are at least two, two HEPA screens (6) being arranged one above the other.

9. An internal circulation range hood according to claim 7, characterized in that it further comprises an air outlet portion (7);

air-out portion (7) pass through the hose with the air outlet of bellows (2) is connected, just HEPA filter screen (6) set up in the import department of air-out portion (7).

10. An internal circulation range hood according to claim 9, characterized in that the HEPA filter screen (6) is detachably connected with the air outlet portion (7).

11. The internal circulation range hood according to claim 9, characterized in that the air outlet part (7) is further provided with an activated carbon filter screen (71);

along oil smoke flow direction, active carbon filter screen (71) set up in the low reaches of HEPA filter screen (6), just the lateral wall of active carbon filter screen (71) forms the air outlet of air-out portion (7).

12. An internal circulation hood according to claim 3, characterized in that the cyclone (4) comprises a plurality of cyclone tubes (41) arranged in parallel, the cyclone tubes (41) being arranged obliquely in height direction;

an air inlet (411) of the cyclone separator (4) is arranged on the side wall of the cyclone tube (41), and a first outlet (412) and a second outlet (413) are respectively formed at the upper end and the lower end of the cyclone tube (41);

wherein the first outlet (412) is in communication with an air inlet of the fume collecting hood (1).

13. An internal circulation range hood according to claim 12, characterized in that the second outlet (413) is an oil outlet and the bottom of the fume collecting hood (1) is provided with an oil cup (11) for receiving grease flowing out of the oil outlet.

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