CN207769434U - A kind of lampblack filter with back-fire relief function - Google Patents

Abstract

The utility model discloses a kind of lampblack filters with back-fire relief function, filter screen including framework and set on framework inner cavity, filter screen includes the multilayer wave sheets of stacking, each layer of wave sheets include multiple arcs groove, it is interspersed with straight piece between two layers adjacent of wave sheets, straight to form multiple filtration channels between piece and each layer of adjacent wave sheets, independent mutually between filtration channel, the path of filtration channel matches with the shape of arcuate furrow.When flame rushes at filter screen, since filtration channel is than narrow, flame is divided into countless tiny flame by filter screen, on the one hand tiny flame carries out cold and hot exchange with filtration channel, filtration channel absorbs the energy of flame, on the other hand wall effect has occurred between tiny flame and filtration channel, lead to the sharp temperature drop of tiny flame, when the temperature of tiny flame drops to the ignition point of combustible substance or less, tiny flame will extinguish in filtration channel, therefore the present apparatus has the function of good back-fire relief.

Description

An oil fume filter device with fire-stopping function

technical field

The utility model relates to an oil fume filtering device, in particular to an oil fume filtering device with a fire-stopping function.

Background technique

The oil fume filter device is mainly used to purify the oil fume discharged from the kitchen and prevent the oil fume from polluting the environment. Due to the particularity of the kitchen environment, the oil fume filter device not only needs to have a good oil fume filtering effect, but also needs to have a good fire resistance function.

The Chinese patent with the application number CN200920262589.7 discloses a lampblack filter device, which includes an outer frame, and inside the outer frame are arranged a plurality of corrugated filter screens arranged side by side, and each corrugated part will form an exhaust channel to catch oil. drops, so the oil fume separation effect is good. However, since the exhaust passages communicate with each other and the gaps formed between the exhaust passages are large, when the flame passes through these exhaust passages, the exhaust passages supplement each other with oxygen, and the flame loses very little energy. , so it is easy to escape these exhaust passages, bringing fire hazards.

Therefore, it is necessary to design a lampblack filtering device with fire arresting function to overcome the above problems.

Utility model content

The purpose of the utility model is to form a plurality of independent filtering passages between the straight piece and the wave piece by interspersing the straight piece between two adjacent layers of wave pieces, so that the oil fume filtering device has a good fire-blocking function.

For the above purpose, the utility model adopts the following technical solutions:

An oil fume filtering device with a fire-stopping function, comprising a frame and a filter screen disposed in the inner cavity of the frame, the filter screen includes stacked multi-layer corrugated sheets, and each layer of the corrugated sheets includes a plurality of arc-shaped Grooves, straight pieces are interspersed between two adjacent layers of the corrugated sheets, a plurality of filtering channels are formed between the straight sheets and each adjacent layer of the corrugated sheets, and the filtering channels are independent of each other , the path of the filter channel coincides with the shape of the arc groove.

Further, each layer of the corrugated sheet includes a plurality of crests and a plurality of troughs, the crests and troughs of two adjacent layers of the corrugated sheets are arranged oppositely, and the straight sheet includes a first surface and a second surface oppositely arranged, The first surface abuts against the crests of the adjacent layer of the wave sheet, and the second surface abuts against the trough of the other adjacent layer of the wave sheet.

Further, the filter mesh is perforated with at least one bracket, and both the straight piece and the corrugated piece are provided with perforations for the bracket to pass through, and the perforations of the corrugated piece are located at the crests or troughs.

Further, at least one fastening piece is sleeved between two adjacent layers of the wave sheet, and the fastening piece is fastened between the oppositely disposed wave crests and wave troughs.

Further, both the first surface and the second surface of the straight piece are provided with a groove, the depth of the groove is smaller than the thickness of the straight piece, and the corrugated piece is welded to the groove.

Further, the arc-shaped grooves of two adjacent layers of the corrugated sheet have the same direction.

Further, the material of the frame is stainless steel, handles are provided on opposite sides of the frame, and the material of the handle is stainless steel.

Further, the frame body is composed of a U-shaped frame and a cover plate, one handle is provided on the U-shaped frame, and the other handle is provided on the cover plate.

Further, both the corrugated sheet and the straight sheet are stainless steel sheets or aluminum sheets.

Further, the cross-section at the inlet of the filtering channel is triangular.

The beneficial effects of the utility model are as follows: the straight piece is interspersed between two adjacent corrugated sheets, so that a plurality of filtering passages are formed between the straight piece and each adjacent corrugated sheet, and these filtering passages are independent of each other. They are not connected to each other. When the flame rushes to the filter, because the filter channel is relatively narrow, the flame is divided into countless small flames by the filter. When these small flames pass through the filter channel, the paths and arcs of the small flames in the filter channel The shape of the groove matches, the path of the small flame becomes longer, and the contact area between the small flame and the wall of the filter channel expands. On the one hand, the small flame exchanges heat with the filter channel, and the filter channel absorbs the energy of the flame. There is a wall effect between the flame and the filter channel, which causes the temperature of the small flame to drop sharply. When the temperature of the small flame drops below the ignition point of the burning material, the small flame will be extinguished in the filter channel, so this device has good performance. Fire-stop function.

Description of drawings

Fig. 1 is the schematic diagram of the utility model;

Figure 2 is a partially enlarged view of Figure 1;

Fig. 3 is the schematic diagram of the framework of the present utility model;

Fig. 4 is an exploded view of the frame of the present utility model;

Fig. 5 is the schematic diagram of the wave sheet of the present utility model;

Fig. 6 is the second embodiment of the utility model;

Fig. 7 is the third embodiment of the present invention.

Explanation of reference numerals: frame body 1; U-shaped frame 11; cover plate 12; filter screen 2; wave sheet 21; wave crest 211; wave trough 212; 222; handle 3; filter channel 4; handle seat 5; bracket 6;

Detailed ways

In order to facilitate a better understanding of the purpose, structure, features, and effects of the utility model, the utility model will be further described in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 1 , the utility model includes a frame body 1 and a filter screen 2 arranged in the inner cavity of the frame body 1 .

As shown in FIG. 3 and FIG. 4 , the frame body 1 is composed of a U-shaped frame 11 and a cover plate 12 , and the cover plate 12 is fixed on the opening end of the U-shaped frame 11 to form a complete frame body 1 . In this embodiment, the frame body 1 is made of stainless steel, that is, the U-shaped frame 11 and the cover plate 12 are made of stainless steel, so that the frame body 1 not only has better structural strength, but also has anti-rust performance. The opposite sides of the frame body 1 are provided with handles 3, the handle 3 can rotate around the handle seat 5, and the handle seat 5 is fixed to the frame body 1 by pull rivets. One handle 3 is disposed on the U-shaped frame 11 , and the other handle 3 is disposed on the cover plate 12 .

As shown in Fig. 1, Fig. 2 and Fig. 5, the filter screen 2 includes stacked multi-layer corrugated sheets 21, and each layer of corrugated sheets 21 includes a plurality of crests 211 and a plurality of troughs 212. In this example, two adjacent layers The crests 211 and troughs 212 of the corrugated sheet 21 are arranged oppositely. Each layer of corrugated sheets 21 includes a plurality of arc-shaped grooves 213, and a straight sheet 22 is interspersed between two adjacent layers of corrugated sheets 21, and a plurality of filtering channels are formed between the straight sheet 22 and each adjacent layer of corrugated sheets 21. The channel 4 and the filter channel 4 are independent of each other, that is, each filter channel 4 is an independent channel and does not communicate with each other. The straight sheet 22 includes a first surface 221 and a second surface 222 oppositely arranged, the first surface 221 abuts against the crest 211 of one layer of corrugated sheet 21, and the second surface 222 abuts against the crest 211 of another adjacent layer of corrugated sheet 21. troughs 212 , so that two filter channels 4 are formed between each peak 211 and each trough 212 arranged oppositely. When the flame rushed to the filter screen 2, because the filter channel 4 was relatively narrow, the flame was divided into countless tiny flames by the filter screen. The shape of the arc-shaped groove 213 coincides, the path of the small flame becomes longer, and the contact area between the small flame and the filter channel 4 is enlarged. On the one hand, the small flame exchanges heat with the filter channel 4, and the filter channel 4 absorbs the energy of the flame On the other hand, a wall effect occurs between the tiny flame and the filter channel 4, causing the temperature of the tiny flame to drop sharply. When the temperature of the tiny flame drops below the ignition point of the burning material, the tiny flame will be extinguished in the filter channel 4 , so this device has a good fire resistance function.

In this example, the cross-section at the inlet of the filtering channel 4 is triangular. The cross-sectional shape of the filter channel 4 matches the cross-sectional shape of the arc-shaped groove 213 . Before the straight piece 22 is inserted, the section at the entrance of the filter channel 4 is prismatic. Compared with the prismatic section, the triangular section reduces the area of the entrance section, which not only has a good fire-blocking function, but also prevents oil fume more fully filtered.

As shown in FIG. 5 , the arc-shaped groove 213 is V-shaped, which facilitates the filtered oil droplets to flow out along the arc-shaped groove 213 . The arc grooves 213 of two adjacent layers of wave sheets 21 have the same orientation, so that although there is a spacer of straight sheet 22 between adjacent two layers of wave sheets 21, each layer of wave sheets 21 can easily Drain the oil droplets away.

In order to strengthen the solidity of the entire filter screen 2 and prevent rust, the corrugated sheet 21 and the straight sheet 22 are all stainless steel sheets or aluminum sheets.

Fig. 2 is the first embodiment of the present utility model, and in the first embodiment, the first surface 221 and the second surface 222 of the straight piece 22 are provided with grooves, the depth of the groove is less than the thickness of the straight piece 22, and the waves The sheet 21 is welded to the groove.

In the second example, the filter screen 2 is perforated with at least one bracket 6 , the straight piece 22 and the wave piece 21 are both provided with perforations for the bracket 6 to pass through, and the perforations of the wave piece are located at the crests 211 or troughs 212 .

In the third embodiment, at least one buckling piece 7 is sleeved between two adjacent layers of wave sheets 21 , and the buckling piece 7 is buckled between the oppositely disposed wave crests 211 and wave troughs 212 .

The above-mentioned three embodiments are all for fixing the straight sheet 22 between the two layers of corrugated sheets 21 to prevent the straight sheet 22 from loosening, so that the overall structural strength of the filter screen 2 can be strengthened, the firmness of the filter screen 2 can be enhanced, and each layer can be prevented from being loosened. Phenomena such as looseness, displacement, and deformation appear between the wave sheets 21, which affect the filtering effect. In addition, because the filter screen 2 becomes a whole that is not easy to loosen, it is no longer necessary to increase the number of stacks of the wave sheets 21 to strengthen the firmness, so the number of stacks of the wave sheets 21 can be correspondingly reduced to shorten the length of the frame body 1. In this way, not only can the production cost be reduced, but also the occupied volume of the oil fume filtering device can be reduced, so as to adapt to different installation requirements under actual conditions.

The above detailed description is only a description of the preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Therefore, all equivalent technical changes made by using the instructions and illustrations of this creation are included in this creation. within the scope of the patent.

Claims (10)

1. A lampblack filtering device with fire-stopping function, characterized in that it comprises: a frame body and a filter screen disposed in the inner cavity of the frame, the filter screen includes stacked multi-layer corrugated sheets, each layer of The corrugated sheet includes a plurality of arc-shaped grooves, and a straight sheet is interspersed between two adjacent layers of the corrugated sheet, and a plurality of filtering channels are formed between the straight sheet and each adjacent layer of the corrugated sheet, so The filtering channels are independent of each other, and the paths of the filtering channels coincide with the shapes of the arc-shaped grooves. 2. The oil fume filtering device with fire arresting function as claimed in claim 1, characterized in that: each layer of said corrugated sheet includes a plurality of crests and a plurality of wave troughs, and the adjacent two layers of said corrugated sheets The crests and troughs are arranged oppositely, and the straight sheet includes a first surface and a second surface oppositely arranged, the first surface abuts against the crests of an adjacent layer of the wave sheet, and the second surface abuts against The troughs of the corrugated sheets of another layer adjacent to each other. 3. A lampblack filtering device with fire-stopping function as claimed in claim 2, characterized in that: said filter screen is pierced with at least one bracket, said straight piece and said wave piece are provided with The perforation through which the support passes, the perforation of the wave sheet is located at the crest or the trough. 4. The oil fume filtering device with fire-stopping function according to claim 2, characterized in that: at least one holding member is sleeved between two adjacent layers of the wave sheet, and the holding member buckles remain between said peaks and said troughs which are relatively disposed. 5. The oil fume filter device with fire arresting function according to claim 1, characterized in that: the first surface and the second surface of the straight piece are provided with grooves, and the depth of the grooves is less than the The thickness of the straight sheet, the wave sheet is welded to the groove. 6. The oil fume filtering device with fire arresting function according to claim 1, characterized in that: the arc-shaped grooves of the two adjacent layers of the corrugated sheet have the same direction. 7. The oil fume filter device with fire arresting function as claimed in claim 1, characterized in that: the material of the frame is stainless steel, handles are provided on opposite sides of the frame, and the material of the handle is For stainless steel. 8. A lampblack filtering device with a fire arresting function as claimed in claim 7, characterized in that: the frame body is composed of a U-shaped frame and a cover plate, and a handle is arranged on the U-shaped frame , and the other handle is arranged on the cover plate. 9. The oil fume filter device with fire-stopping function according to claim 1, characterized in that: the corrugated sheet and the straight sheet are both stainless steel sheets or aluminum sheets. 10 . The oil fume filter device with fire arresting function according to claim 1 , wherein the section at the inlet of the filter channel is triangular in shape. 11 .