CN217274390U - Oil smoke prefilter and table top fume exhaust fan - Google Patents

Abstract

The utility model discloses a fume prefilter and desktop range hood belongs to household electrical appliances technical field, for solving current desktop range hood's the low scheduling problem design of oil smoke treatment effeciency. The utility model provides an oil smoke is filter equipment in advance includes an at least slice heat absorption inserted sheet, is provided with the air current through-hole that supplies the oil smoke to pass on the heat absorption inserted sheet, and the heat absorption inserted sheet is configured to can be followed with the oil smoke heat exchange in order to condense out the liquid drop, the liquid drop the surface of heat absorption inserted sheet flows. The utility model provides an oil smoke is filter equipment and desktop range hood in advance, the oil smoke can carry out the heat exchange with the heat absorption inserted sheet when passing the air current through hole, can condense out liquid drops such as oil drop and water droplet in the oil smoke of low temperature ground, and the liquid drop can flow to setting for position department along heat absorption inserted sheet surface, is convenient for collect in unison and clears up. Oil drops and water drops in the oil smoke are purified more thoroughly, the smoke arriving at the built-in filter element is in a dry state, and the oil drops and the water drops are prevented from reducing the filtering capacity of the built-in filter element.

Description

Oil smoke prefilter and table top fume exhaust fan

Technical Field

The utility model relates to a household electrical appliances technical field especially relates to an oil smoke is filter equipment in advance and is included this oil smoke filter equipment's desktop range hood in advance.

Background

The table top fume exhauster is one portable fume exhauster set capable of being set on dining table to filter fume produced during chafing dish or roasting meat. The use scene is more flexible, can be but not be limited to and be used in sitting room and dining room, reduces the influence of steam oil smoke to indoor air.

The existing desktop range hood is simple in structure, and the oil smoke is filtered by the HEPA filter element. The HEPA filter element is mainly used for conventional air purification and removing particle dust and various suspended matters. The cooking oil fume contains a large amount of gaseous oil and water vapor, and when the HEPA filter element is directly used, a large amount of water vapor oil fume can be attached to the HEPA filter element, so that the filtering capacity of the HEPA filter element is reduced, and the filter element quickly enters a saturated state; the filter core can not be recycled, the use cost is high, and the time requirement of a user for cooking the hot pot can not be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil smoke is filter equipment and desktop range hood in advance, can improve the treatment effeciency to the oil smoke.

To achieve the purpose, on one hand, the utility model adopts the following technical scheme:

the oil smoke prefilter comprises at least one heat absorption inserting sheet, wherein an airflow through hole for oil smoke to pass through is formed in the heat absorption inserting sheet, the heat absorption inserting sheet is configured to be capable of exchanging heat with the oil smoke to condense out liquid drops, and the liquid drops can flow along the surface of the heat absorption inserting sheet.

In a preferred embodiment, the heat absorption insertion sheet is a sheet-shaped structure with a V-shaped cross section, a water flow channel is formed at the bottom of the sheet-shaped structure, and the liquid drops can flow along the surface of the water flow channel.

In a preferred embodiment, the heat absorbing insert comprises two halves folded in half, the fold angle b e between the two halves [70 °, 110 ° ].

In a preferred embodiment, one end of the heat absorption inserting sheet is provided with a mounting part.

In a preferred embodiment, the other end of the heat absorption insert is provided with a closed surface.

In a preferred embodiment, the heat absorbing insert is arranged obliquely relative to the horizontal plane.

In a preferred embodiment, the heat absorbing insert is inclined with respect to the horizontal plane by an angle a e [10 °, 30 ° ].

On the other hand, the utility model adopts the following technical scheme:

a table top range hood comprises the oil smoke prefilter.

In one preferred embodiment, the table top range hood further includes: the separation assembly is detachably connected to the shell, a first flue is arranged in the separation assembly, and the pre-filtering device is arranged in the first flue.

In a preferred embodiment, the cross section of the first flue is gradually increased along the oil smoke flowing direction, and the pre-filtering device is arranged in the first flue at the position where the cross section is the largest.

The utility model provides an oil smoke is filter equipment in advance includes an at least slice heat absorption inserted sheet, is provided with the air current through hole that supplies the oil smoke to pass on the heat absorption inserted sheet, can carry out the heat exchange with the heat absorption inserted sheet when the oil smoke passes air current through hole, can condense out liquid drops such as oil drop and water droplet in the oil smoke of low temperature ground, and the liquid droplet can flow to setting for position department along heat absorption inserted sheet surface, is convenient for collect in unison and clears up.

The utility model provides a desktop range hood includes foretell oil smoke filter equipment in advance, and the heat absorption inserted sheet can improve the efficiency with the oil smoke heat transfer, and oil drips in the oil smoke and water droplet purify more thoroughly, and the order is arrived the flue gas of built-in filter core department and is dry state, avoids oil to drip and the water droplet reduces the filter capacity of built-in filter core.

Drawings

Fig. 1 is a schematic structural view of a table top range hood provided in an embodiment of the present invention;

fig. 2 is a sectional view of a table top range hood provided in the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a separation assembly according to an embodiment of the present invention;

fig. 4 is a schematic view of a combination structure of a heat dissipation frame and a heat absorption insertion sheet according to an embodiment of the present invention;

FIG. 5 is a front view of a heat absorbing insert according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a heat absorbing insert according to an embodiment of the present invention;

fig. 7 is a side view of a heat absorbing insert according to an embodiment of the present invention.

In the figure:

1. a housing; 2. a separation assembly; 3. a filter element is arranged in the filter; 4. a centrifugal fan; 5. a fan bracket; 6. a drip channel; 7. a first flue; 11. a smoke outlet; 21. a heat dissipation frame; 22. a front cover plate; 23. an inner baffle; 24. a separator plate; 25. a water collection box; 26. a drainage baffle; 27. a smoke inlet; 28. inserting heat absorption sheets; 281. an airflow through hole; 282. a water flow channel; 283. a closed face; 284. a mounting portion.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

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", and the like, indicate the orientation or positional relationship 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, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The embodiment provides an oil smoke prefilter and a table-top range hood comprising the same. As shown in fig. 1 to 3, the table-top range hood comprises a housing 1, a separation assembly 2, a built-in filter element 3 and a centrifugal fan 4, wherein the centrifugal fan 4 is fixedly installed in the housing 1 through a fan bracket 5. A smoke exhaust port 11 is provided at the top of the housing 1 for discharging the purified air substantially vertically upward.

Be provided with first flue 7 in the separator assembly 2, be provided with pre-filter in the first flue 7, pre-filter can make the oil smoke cooling to make fluid and water droplet condensation in the oil smoke come out, let the flue gas that gets into built-in filter core 3 only include solid particle and do not include oil water droplet as far as possible, thereby prolong 3 single use maximum purification ability of built-in filter core and total life, promote filtration efficiency, the oil smoke filters more thoroughly, has reduced the influence of outer row's flue gas to the environment. The separating component 2 is detachably connected to the shell 1, so that the pre-filtering device can be cleaned or replaced in time, the use cost is reduced, the use is more convenient, and the structure is more compact. The arrangement of the first flue 7 prolongs the flue, more filtering structures can be arranged on the way of oil smoke flowing through, and the filtering effect is better.

The specific material of the built-in filter element 3 is not limited, and can be, but not limited to, a HEPA filter element, which can remove particle dust and various suspended matters in the air.

When the centrifugal fan 4 works, the air can be driven to flow, the arrow in fig. 2 is the direction of the air flow, the oil smoke is sucked into the first flue 7 along with the air flow, and the oil smoke passes through the pre-filtering device to remove oil drops and water drops to form basically dry smoke; the smoke continues to reach the built-in filter element 3 along with the airflow, and the air is basically clean after passing through the built-in filter element 3 and then is discharged from the smoke outlet 11, so that the oil smoke purification treatment is completed.

The separating assembly 2 comprises a heat dissipation frame 21, a front cover plate 22, an inner baffle plate 23, an isolation plate 24, a water collecting box 25 and a drainage baffle plate 26, the heat dissipation frame 21, the front cover plate 22, the inner baffle plate 23 and the isolation plate 24 jointly enclose a first flue 7, and the water collecting box 25 is located below the first flue 7. A strip-shaped smoke inlet 27 is formed between the drainage baffle 26 and the top edge of the front cover plate 22, and the smoke inlet 27 is communicated with the first smoke channel 7. The oil smoke enters from the upper part of the first flue 7 and passes through the pre-filtering device from top to bottom; the bottom of the inner baffle 23 is provided with a through hole, and the flue gas passing through the pre-filtering device passes through the through hole and then leaves the first flue 7 to reach the space where the built-in filter element 3 is located, and waits for being purified by the built-in filter element 3.

The oil smoke can carry out the heat transfer with prefilter when passing prefilter, and the oil smoke makes oil gas condensation wherein become oil drop, the water vapour condensation becomes the water droplet because of the cooling, and oil drop and water droplet drip into the collection water box 25 of below under the dead weight effect in, and the user can concentrate the clearance. The pre-filtering device is preferably made of waterproof materials, can be directly soaked and cleaned and can be repeatedly used, and the use cost of cooking oil fume purification of a user is reduced.

Along the direction of flow of the cooking fumes, the cross section of the first flue 7 is gradually increased, and the pre-filtering device is arranged in the first flue 7 at the position where the cross section is the largest. According to the Knoop principle, only the cross section of the channel is changed under the condition of constant air volume, the larger the cross section area is, the slower the air speed is, and the smaller the cross section area is, the faster the air speed is. Namely, the maximum cross section area of the gradually-expanded channel is the minimum wind speed, the pre-filtering device is arranged at the minimum wind speed, the kinetic energy of the oil smoke is consumed, the contact time of the pre-filtering device and the oil smoke is prolonged, the pre-filtering device is favorable for absorbing heat of hot air, water vapor in the oil smoke is condensed into liquid drops, the water vapor in the oil smoke is separated, and the water content in the smoke reaching the built-in filter element 3 is reduced as much as possible.

As shown in fig. 4 to 7, the lampblack pre-filtering device comprises at least one heat absorption insertion sheet 28, an air flow through hole 281 for the lampblack to pass through is formed in the heat absorption insertion sheet 28, the heat absorption insertion sheet 28 is configured to be capable of exchanging heat with the lampblack to condense out liquid drops, and the liquid drops can flow along the surface of the heat absorption insertion sheet 28. In this embodiment, a plurality of heat absorption insertion pieces 28 are sequentially arranged along the oil smoke flowing direction, so that the heat exchange efficiency with the oil smoke is improved, and oil drops and water drops in the oil smoke are purified more thoroughly.

The arrangement of the air flow through holes 281 increases the contact area between the heat absorption insertion sheet 28 and the high-temperature oil smoke, so that the heat absorption insertion sheet 28 and the oil smoke can exchange heat better. The oil smoke after cooling is easier to condense oil drops and water drops, so that preparation is made for the subsequent built-in filter element 3 to filter smoke, and the reduction of the filtering capacity of the built-in filter element 3 caused by the oil drops and the water drops reaching the built-in filter element 3 is avoided.

As shown in fig. 6 and 7, the heat absorbing insert 28 is a sheet structure with a V-shaped cross section, and a water flow channel 282 is formed at the bottom of the sheet structure, and liquid drops (including oil drops and/or water drops) can flow along the surface of the water flow channel 282. The water collecting box 25 is arranged below the heat absorption inserting sheet 28, and liquid drops can fall into the water collecting box 25 along the water flow channel 282, so that uniform cleaning is facilitated. The water flow passage 282 is not opened with the air flow hole 281 at a position adjacent to the water flow passage 282 so that the liquid droplets can continuously flow.

The specific manner of forming the sheet-like structure having a V-shaped cross-section is not limited, and preferably, the heat absorbing insert 28 comprises two halves folded in half. The two half pieces can be formed by extruding a large sheet structure from the middle part, or two small sheet structures are welded into a whole, and the two modes can realize the functions of heat exchange with oil smoke and liquid drop diversion.

The break angle b between the two halves e [70 °, 110 °, in this embodiment b is preferably 90 °, facilitating the flow of droplets in and out along the break angle.

The specific installation manner of the heat absorption insertion sheet 28 is not limited, and the heat absorption insertion sheet can be stably arranged in the first flue 7. Preferably, one end of the heat absorbing insert 28 is provided with a mounting portion 284. The isolation plate 24 is correspondingly provided with a clamping hole or a V-shaped groove, and the mounting portion 284 is inserted into the clamping hole or the V-shaped groove, so that the heat absorption insertion sheet 28 is stably connected to the isolation plate 24.

The other end of the heat absorption inserting sheet 28 is preferably provided with a closed surface 283, the closed surface 283 is abutted against the heat dissipation frame 21, the contact area between the heat absorption inserting sheet 28 and the heat dissipation frame 21 is increased, the heat absorption inserting sheet 28 is favorable for transferring heat to the heat dissipation frame 21, the heat dissipation efficiency is higher, and the cooling effect on oil smoke is better.

In order to improve the smoothness of the droplet flow, as shown in fig. 4 and 5, the heat absorbing insert 28 is disposed to be inclined with respect to the horizontal plane, i.e., the closing surface 283 is higher than the mounting portion 284. The liquid drops flow from the closed surface 283 to the mounting portion 284 by their own weight, and then fall into the catch box 25 from the drip passage 6.

The heat absorbing insert 28 is inclined relative to the horizontal at an angle a e [10 °, 30 ° ]. In this embodiment, the included angle a is preferably 15 °, which not only can increase the flowing speed of liquid droplets, but also can increase the number of heat absorption insertion pieces 28 under the condition that the length of the first flue 7 is not changed, so as to improve the cooling effect on the oil smoke.

It should be noted that the above description is only for the purpose of illustrating the preferred embodiments of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A lampblack pre-filtering device is characterized by comprising at least one heat absorption inserting sheet (28), wherein an air flow through hole (281) for lampblack to pass through is formed in the heat absorption inserting sheet (28), the heat absorption inserting sheet (28) is configured to be capable of exchanging heat with the lampblack to condense liquid drops, and the liquid drops can flow along the surface of the heat absorption inserting sheet (28).

2. The lampblack pre-filtering device according to claim 1, characterized in that said heat absorbing insert (28) is a sheet-like structure with a V-shaped cross section, the bottom of said sheet-like structure forming a water flow channel (282), said droplets being able to flow along the surface of said water flow channel (282).

3. The fume prefilter according to claim 2 wherein said heat absorbing insert (28) comprises two halves folded in half, the fold angle b e between said halves [70 °, 110 ° ].

4. The lampblack pre-filtering device according to claim 1, characterized in that one end of the heat absorbing insert (28) is provided with a mounting portion (284).

5. The lampblack pre-filtering device as claimed in claim 4, characterized in that the other end of the heat absorbing insert (28) is provided with a closing face (283).

6. The cooking fume pre-filtering device according to any one of the claims 1 to 5, characterized in that said heat absorbing insert (28) is arranged inclined with respect to a horizontal plane.

7. The cooking fumes pre-filtering device according to claim 6, characterized in that said heat absorbing insert (28) is inclined with respect to the horizontal plane by an angle a e [10 °, 30 °.

8. A table top range hood comprising the soot pre-filtering device of any one of claims 1 to 7.

9. The table top range hood of claim 8, further comprising: the filter comprises a shell (1), a separation assembly (2) and a built-in filter element (3), wherein the separation assembly (2) is detachably connected onto the shell (1), a first flue (7) is arranged in the separation assembly (2), and the pre-filtering device is arranged in the first flue (7).

10. The table top range hood according to claim 9, wherein the first flue (7) has a gradually increasing cross-section in the direction of the flow of the cooking fumes, and the pre-filtering device is disposed in the first flue (7) at a position where the cross-section is largest.

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