CN205569981U - Filter - Google Patents

Abstract

The utility model provides a filter relates to auto -parts technical field, the purpose that reaches be provide one kind can palingenetic filter. The main technical scheme who adopts does: this filter includes filtering component and heater. Filtering component is by at least two compact range upon range of the forming of cassette, filtering component's first side is the side of admitting air, filtering component with the relative second of first side inclines to the side of giving vent to anger, the heater sets up filtering component is last, is used for the heating cassette and passing the gas of cassette to filter regeneration is realized to adnexed soot granule on the heating cassette, or, the heater set up with the relative position department of the side of admitting air is used for the heating to let in gas in the filtering component is in order to realize filter regeneration.

Description

Filter

Technical Field

The utility model relates to the technical field of auto-parts, especially, relate to a filter.

Background

In automobile parts, the filter is mainly used for filtering particulate matters in the exhaust of an automobile engine. And after the filter works for a period of time, the particulate matters in the exhaust gas can block a filter disc of the filter, so that the performance of the engine is reduced, and the engine cannot work. In the prior art, an oil injection device is generally provided, and oil is injected to the filter through the oil injection device to combust particles on the filter sheet so as to clean the filter sheet of the filter. However, secondary pollution is generated by adopting the mode of oil injection combustion. Therefore, the problem of cleaning the filter disc of the filter is a problem to be solved.

Disclosure of Invention

The main object of the utility model is to provide a novel structure can regenerate filter.

The utility model discloses an aim at and solve its technical problem and adopt following technical scheme to realize:

the utility model provides a filter, this filter includes:

the filter assembly is formed by compactly laminating at least two filter sheets; the first side of the filter assembly is an air inlet side, and the second side of the filter assembly, which is opposite to the first side, is an air outlet side;

the heater is arranged on the filter assembly and used for heating the filter sheet and gas passing through the filter sheet so as to heat soot particles attached to the filter sheet to realize filter regeneration; alternatively, the heater is disposed opposite the inlet side for heating gas passing into the filter assembly to effect filter regeneration.

The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.

The filter as set forth above, wherein the heater comprises: at least one heating plate, wherein the heating plate and the filter plate are arranged in a stacked mode;

the heating sheet is provided with an electric connecting part which is exposed at the third side or the fourth side of the filter component;

the third side and the fourth side are both sealed sides.

The filter as described above, wherein the number of the heating sheets is at least two, M filtering sheets are arranged between every two adjacent heating sheets, and M is a positive integer greater than 2.

The filter as set forth above, wherein the heater further comprises:

the first shell is configured into a shell with two open ends and an accommodating cavity inside; an opening is formed in the first shell;

the filter assembly is arranged in the accommodating cavity, and the air inlet side and the air outlet side respectively correspond to two ends of the first shell;

the electrical connection is exposed through the opening.

The filter as described above, wherein the filter sheet is provided with a fixing portion on a side edge;

when the at least two filter sheets are compactly stacked, the fixing parts of the at least two filter sheets form a first fixing structure, and the first fixing structure is positioned on the third side and/or the fourth side of the filter assembly;

correspondingly, a second fixing structure corresponding to the first fixing structure is arranged on the cavity wall of the accommodating cavity, and the second fixing structure is fixedly connected with the first fixing structure to fixedly connect the filter assembly and the first shell.

The filter as described above, wherein the filter further comprises:

the second shell is configured into a shell with two open ends and an accommodating cavity inside;

the filter assembly is arranged in the accommodating cavity, and the air inlet side and the air outlet side respectively correspond to two ends of the second shell;

the heater is provided on an end of the second housing corresponding to the intake side.

The filter as described above, wherein the filter sheet comprises a filter felt and a frame; the frame is arranged on the filter felt and is arranged along the edge of the filter felt;

the at least two filter sheets are compactly stacked, and part of the frame on each filter sheet is in contact with the first face of the adjacent filter sheet; wherein,

the number of the filter sheets is at least three, and in every three adjacent filter sheets, on an axis of the filter sheet in the middle position, the filter sheets on the two sides are arranged in a staggered mode relative to the filter sheet in the middle position in the same direction and are used for forming the air inlet side and the air outlet side.

The filter as described above, wherein the number of the filter sheets is at least three, and the end faces of the filter sheets on both sides of every adjacent three filter sheets are aligned.

The filter as described above, wherein the filter sheet is provided with at least one heat-conducting sheet, and the heat-conducting sheet is provided on the frame along a line between the air inlet side and the air outlet side;

the size of the heat conducting fin is smaller than that of an area defined by the frame.

The filter as described above, wherein the heat conducting sheet has a bent structure.

Borrow by above-mentioned technical scheme, the utility model discloses the structure has following advantage at least:

the technical proposal provided by the utility model is that the heater is arranged at the position opposite to the air inlet side of the filtering component, and the gas introduced into the filtering component is heated to cause the harmful substances attached on the filter sheet to generate oxidation reaction at high temperature; or the heater is arranged on the filter assembly, and the filter sheet is heated to enable harmful substances attached to the filter sheet to generate oxidation reaction at high temperature, so that the harmful substances on the filter sheet are cleaned, and the aim of regenerating the filter is fulfilled. Compared with the prior art, the utility model provides a filter can be regenerated, pollute little, simple structure, easily realize.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a first schematic structural diagram of a filter according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a heating sheet in a first structure of a filter according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating stacking of at least two filter sheets in a first structure of a filter according to an embodiment of the present invention;

fig. 4 is a schematic view showing stacking of at least two filter sheets in a first filter according to an embodiment of the present invention;

fig. 5 is a second structural schematic diagram of a filter according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a filter sheet in a second structure of the filter according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a filter sheet in a first structure of a filter according to an embodiment of the present invention;

fig. 8 is a schematic view showing at least two filter sheets stacked in a second structure of the filter according to the embodiment of the present invention;

fig. 9 is a schematic view showing at least two filter sheets stacked in a second structure of the filter according to the embodiment of the present invention;

fig. 10 is a third schematic structural diagram of a filter according to an embodiment of the present invention;

fig. 11 is a fourth schematic structural diagram of a filter according to an embodiment of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments, in order to explain the detailed embodiments, structures, features and effects of the technical solution according to the present invention. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1, a schematic structural diagram of a filter according to an embodiment of the present invention is provided. As shown in fig. 1 to 8, the filter mentioned in the embodiment of the present invention can filter the exhaust of a motor vehicle (such as a diesel vehicle or a gasoline vehicle), and can also be used as a filter of an air purifier to filter air. The filter includes: a filter assembly 10 and a heater 20. The filter assembly 10 is formed by compactly stacking at least two filter sheets 11. The first side of the filter assembly 10 is a first side 12 and the second side of the filter assembly 10 opposite the first side is a second side 13. A heater 20 is disposed on the filter assembly 10 (shown in fig. 1 and 5) for heating the filter and the gas passing through the filter to heat soot particles attached to the filter for filter regeneration; alternatively, a heater 20 is provided at a location opposite the inlet side for heating the gas passing into the filter assembly to effect filter regeneration. The embodiment of the utility model provides an in heat or heat filter plate 11 to filter assembly 10 through the gas that lets in filter assembly 10 to make harmful substance (such as soot, granule etc.) on attached to filter plate 11 be in under the high temperature environment, thereby provide high temperature environment for harmful substance's oxidation reaction, make the harmful substance on the filter plate 11 clear up, increased filter plate 11's life, and then realize the purpose of filter regeneration. Compared with the mode of burning harmful impurities on the filter disc by oil spraying combustion of the oil spraying device to the filter in the prior art, the device reduces the generation of harmful gas, avoids secondary pollution, and is simple in structure and easy to realize.

In this embodiment, the structure of the filter assembly 10 may be an existing structure. In particular, the filter assembly 10 may have the following structure:

in particular implementations, the filter sheet 11 may include a filter felt 111 and a frame 112. The frame 112 is disposed on a second side of the filter felt 111 (as shown in fig. 6) and along the edges of the filter felt 111. Wherein the frame 112 is used for supporting the filter felts 111 to have a gap between two adjacent filter felts 111. At least two filter sheets 11 are stacked compactly, and a part of the frame 112 on each filter sheet 11 is in contact with a first face of an adjacent filter sheet 11 opposite to a second face. The number of the filter sheets 11 is two, and the two filter sheets 11 are arranged in a staggered manner; the number of the filter sheets 11 is at least three, and in every adjacent three filter sheets, on an axis of the filter sheet in the middle position, the filter sheets on both sides are staggered in the same direction relative to the filter sheet in the middle position, wherein the staggered lengths of the filter sheets on both sides relative to the filter sheet in the middle position may be the same (that is, the end faces of the filter sheets on both sides are aligned) or different, and are not specifically limited herein. Because every two adjacent filter sheets are arranged in a staggered mode, two sides of the stacked staggered mode are taken as the first side 12 and the second side 13 of the filter assembly 10. It should be noted that the sides of the filter assembly 10 other than the first side 12 and the second side 13 are sealed sides. Meanwhile, the second side 13 is sealed at a position opposite to the air inlet of the first side 12, that is, the air inlet and the air outlet of the filter assembly 10 are arranged in a crossed manner.

In practical application, the number of the filter sheets is three as an example: the three filter sheets are respectively a first filter sheet, a second filter sheet and a third filter sheet, and the first filter sheet, the second filter sheet and the third filter sheet are sequentially stacked to form a filter assembly. First side of filter assembly: the first filter sheet and the third filter sheet extend out of the second filter sheet; second side of filter assembly: the second filter sheet extends out of the first filter sheet and the third filter sheet. The second side serves as the first side of the filter assembly and the first side serves as the second side of the filter assembly. An air inlet is formed between the first filter sheet and the second filter sheet on the first side, and an air outlet is formed between the second filter sheet and the third filter sheet on the second side. Since at the second side the frame of the second filter sheet is in contact with the first face of the first filter sheet to seal the gap between the first filter sheet and the second filter sheet. Therefore, when air enters the filter assembly from the air inlet, the air needs to pass through the first filter sheet and the second filter sheet and flow out from the air outlet. Therefore, the embodiment of the utility model provides a harmful substance that the filter will carry from the gas that the air inlet got into flows from the gas outlet after passing the cassette, the effectual filter area that has increased has improved purifying effect for gas quality after the filtration is higher.

In particular implementations, the filter sheet 11 may include a filter felt 111 and a frame 112. The frame 112 is disposed on a first face and a second face opposite to the first face of the filter felt 111, and is disposed along an edge of the filter felt 111. At least two filter sheets 11 are stacked in a compact manner, with a portion of the frame 112 on the second side of each filter sheet 11 in contact with the first side of an adjacent filter sheet 11. The number of the filter sheets 11 is at least three, and in every adjacent three filter sheets, on an axis of the filter sheet in the middle position, the filter sheets on both sides are staggered in the same direction relative to the filter sheet in the middle position, wherein the staggered lengths of the filter sheets on both sides relative to the filter sheet in the middle position may be the same (that is, the end faces of the filter sheets on both sides are aligned) or different, and are not specifically limited herein. Due to the offset arrangement of every two adjacent filter sheets, the filter assembly 10 has two uneven sides, which serve as the first side 12 and the second side 13 of the filter assembly 10. It should be noted that the sides of the filter assembly 10 other than the first side 12 and the second side 13 are sealed sides. At the same time, the second side 13 is sealed in a position opposite to the air inlet of the first side 12.

In practical application, the number of the filter sheets is three as an example: the three filter sheets are respectively a first filter sheet, a second filter sheet and a third filter sheet, and the first filter sheet, the second filter sheet and the third filter sheet are sequentially stacked to form a filter assembly. First side of filter assembly: the first filter sheet and the third filter sheet extend out of the second filter sheet; second side of filter assembly: the second filter sheet extends out of the first filter sheet and the third filter sheet. The second side serves as the first side of the filter assembly and the first side serves as the second side of the filter assembly. And an air inlet is formed between the first filter sheet and the second filter sheet on the first side, a gasket is arranged between the first filter sheet and the second filter sheet on the second side to seal a gap between the first filter sheet and the second filter sheet, and an air outlet is formed between the second filter sheet and the third filter sheet. When air enters the filter assembly from the air inlet, the air needs to pass through the first filter sheet and the second filter sheet and flow out from the air outlet. Therefore, the embodiment of the utility model provides a harmful substance that the filter will carry from the gas that the air inlet got into flows from the gas outlet after passing the cassette, the effectual filter area that has increased has improved purifying effect for gas quality after the filtration is higher.

In this embodiment, a metal fiber filter felt may be used as the filter felt. Wherein the metal fiber is a fiber made of metal or other alloy. The metal fibers look various in appearance. The material includes stainless steel, carbon steel, cast iron, copper, aluminum, nickel, iron-chromium-aluminum alloy, high temperature alloy, etc. The fiber can be divided into long fiber, short fiber, thick fiber, thin fiber, steel wool, profiled fiber, etc. according to the shape. The metal fiber is produced by conventional wire drawing and cutting method, melting and drawing method, cluster drawing method, scraping method, cutting method, etc. The specific structure of the metal fiber is a common technology in the prior art, and can be selected from the prior art as required, which is not described herein again. The metal fiber has excellent particle filtering function and can filter particles in the air.

In specific implementation, a large number of experiments show that: if the metal fiber with the pore diameter of 7 mu m, the thickness of 0.40 +/-10 percent mm, the breaking strength of 36 +/-20 percent mpa and the porosity of 76 +/-10 percent is selected to manufacture the filter felt, the filtering precision of the metal fiber is more than 6.0 to 8.0 mu m and the pollutant carrying capacity of 3.8 +/-20 percent mg/cm when the pressure of the metal fiber is 5200 +/-10 percent Pa²(ii) a If the metal fiber with the pore diameter of 10 mu m, the thickness of 0.50 +/-10 percent mm, the breaking strength of 32 +/-20 percent mpa and the porosity of 75 +/-10 percent is selected to be used for manufacturing the filter felt, the filtering precision of the metal fiber is more than 8.0-13.0 mu m and the dirt-containing capacity is more than 8.0-13.0 mu m when the pressure of the metal fiber is 3700 +/-10 percent PaThe amount is 4.0 + -20% mg/cm². Therefore, the pore size of the metal fibers determines the filtering effect on the contaminants (e.g., particulate matter). The smaller the pore size of the metal fiber is, the better the filtering effect on the particulate matter is, and conversely, the larger the pore size of the metal fiber is, the worse the filtering effect on the particulate matter is.

Further, as shown in fig. 3, 4, 6 and 9, the filter sheet 11 of the above embodiment is provided with at least one heat conduction sheet 113, and the heat conduction sheet 113 is disposed on the frame 112 along a line between the first side 12 and the second side 13. In other words, the heat conducting sheet 113 is attached to the filter sheet 11 and arranged along the flow direction of the gas. The size of the heat-conducting sheet 113 is smaller than the size of the area enclosed by the frame 112. The embodiment of the utility model provides an in, be equipped with conducting strip 113 on frame 112 not only increased frame 112's intensity, increased the heat conduction area of cassette 11 moreover and made the cassette 11 be heated evenly to all can be heated on making the cassette 11, and then improved the cleaning efficiency of cassette 11.

In specific implementation, the heat conducting sheet 113 in the above embodiments may have a straight plate structure (as shown in fig. 3 and 4), and the heat conducting sheet 113 may also have a bent structure (as shown in fig. 6 and 9). And the heat conducting fin 113 with the bent structure is adopted, so that the heat conducting fin 113 has a damping effect, the noise generated by gas is attenuated, the heat conducting area is increased, and the cleaning effect of the filter plate 11 is more effectively improved.

Further, the heater 20 described in the above embodiments may be disposed on the filter assembly 10, or the heater 20 may be disposed at a position opposite the first side 12. The details are as follows:

first, the heater 20 is disposed on the filter assembly 10: the heater 20 may include: at least one heating sheet 21 (shown in fig. 1, 2 and 5), the heating sheet 21 being stacked with the filter sheet 11. The heat patch 21 has an electrical connection 211, the electrical connection 211 being exposed at the third side 14 or the fourth side 15 of the filter assembly 10. The third side 14 and the fourth side 15 are both sealed sides. In specific implementation, the electrical connection portion 211 is powered on, and the heating sheet 21 converts electrical energy into heat energy to heat the filter sheet 11, so that the temperature of the harmful substances attached to the filter sheet 11 is increased. When the temperature reaches the predetermined temperature, the harmful substances attached to the filter 11 are oxidized, thereby realizing the cleaning of the harmful substances on the filter 11. In practical application, the predetermined temperature may be 580-600 ℃.

In this embodiment, power may be supplied to the electrical connection portion 211 at any time, or power may be supplied to the electrical connection portion 211 at predetermined time intervals. Therefore, the embodiment of the present invention provides a heater 20 in the filter, which can heat the filter assembly 10 at any time or selectively, so that the filter regeneration has any time or controllability, and the practicability is high.

In order to prevent the heating sheets 21 from affecting the filtering efficiency of the filtering assembly 10, the number of the heating sheets 21 is at least two, M filtering sheets 11 are arranged between every two adjacent heating sheets 21, and M is a positive integer greater than 2. Because the air inlet and the air outlet of the filtering component 10 are arranged in a cross manner, if two filtering sheets 11 are arranged between every two adjacent heating sheets 21, and the two filtering sheets 11 just form the air inlet, the air flowing in from the air inlet is blocked by the heating sheets 21 and cannot flow out from the air outlet, so that the two filtering sheets 11 cannot realize the filtering function, and the filtering efficiency of the filtering component 10 is influenced. Therefore, the embodiment of the present invention provides a technical solution that can avoid the above phenomenon to occur, and ensure the filtering efficiency of the filtering component 10.

In order to effectively protect the heater 20, the heater 20 described in the above embodiment may further include: a first housing 30a (shown in fig. 10). The first housing 30a is configured as a housing having two open ends and an accommodating chamber therein. The first housing 30a is provided with an opening 31 a. The filter assembly 10 is disposed in the receiving cavity, and the first side 12 and the second side 13 correspond to two ends of the first housing 30a, respectively. The electrical connection portion 211 is exposed through the opening 31 a. When gas flows into the receiving chamber from an end of the first housing 30a corresponding to the first side 12, the gas flows into the filter assembly 10 from the first side 12 of the filter assembly 10 in the receiving chamber and flows out from the second side 13 of the filter assembly 10 through the other side of the first housing 30 a. In order to fixedly connect the filter assembly 10 to the first housing 30a, a fixing portion 1111 is disposed on a side edge of the filter sheet 11. When the at least two filter sheets 11 are compactly stacked, the fixing portions 1111 of the at least two filter sheets 11 constitute a first fixing structure 16, and the first fixing structure 16 is located on the third side 14 and/or the fourth side 15 of the filter assembly 10. Correspondingly, a second fixing structure corresponding to the first fixing structure 16 is disposed on the cavity wall of the accommodating cavity, and the second fixing structure is fixedly connected with the first fixing structure 16 to fixedly connect the filter assembly 10 and the first housing 30 a. In practical implementation, the fixing portion 1111 of the filter sheet 11 is the opening 31a, and when at least two filter sheets 11 are stacked compactly, the positions of the openings 31a of every two adjacent filter sheets 11 are different, so that two sides of the filter assembly 10 formed by stacking at least two filter sheets 11 compactly are staggered to form the first side 12 and the second side 13. The first structure is a groove formed by aligning at least two openings 31a, and correspondingly, the second fixing structure is a clamping strip clamped with the groove. The filter assembly 10 and the first housing 30a are fixedly coupled by snapping the snap strips into the grooves. Of course, the fixing portion 1111 may also be another structure in the prior art, and the embodiment of the present invention is not limited in particular.

Second, the heater 20 is arranged at a position opposite the first side 12: the filter may further include: a second housing 30b (shown in fig. 11). The second housing 30b is configured as a housing having two open ends and an accommodating chamber therein. The filter assembly 10 is disposed in the receiving cavity, and the first side 12 and the second side 13 correspond to two ends of the second housing 30b, respectively. The heater 20 is disposed on the second housing 30 b. The heater 20 may be disposed inside an end of the second casing 30b corresponding to the first side 12, or may be embedded in an end of the second casing 30b corresponding to the first side 12. In specific implementation, the arrangement of the heater 20 on the second casing 30b needs to be selected according to the structure of the heater 20. For example, the heater 20 has a ring structure, and the heater 20 is embedded in an end of the second housing 30b corresponding to the first side 12. When the gas flows in from the end of the second housing 30b corresponding to the first side 12, the gas passes through the heater 20 thereon, so that the temperature of the gas flowing in is increased, and when the gas passes through the filter 11, the gas heats the harmful substances attached to the filter 11, so that the harmful substances are oxidized, thereby realizing the cleaning of the filter 11 and prolonging the service life of the filter 11.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A filter, comprising:

the filter assembly is formed by compactly laminating at least two filter sheets; the first side of the filter assembly is an air inlet side, and the second side of the filter assembly, which is opposite to the first side, is an air outlet side;

the heater is arranged on the filter assembly and used for heating the filter sheet and gas passing through the filter sheet so as to heat soot particles attached to the filter sheet to realize filter regeneration; alternatively, the heater is disposed opposite the inlet side for heating gas passing into the filter assembly to effect filter regeneration.

2. The filter of claim 1, wherein the heater comprises: at least one heating plate, wherein the heating plate and the filter plate are arranged in a stacked mode;

the heating sheet is provided with an electric connecting part which is exposed at the third side or the fourth side of the filter component;

the third side and the fourth side are both sealed sides.

3. The filter of claim 2,

the quantity of heating plate is at least two, every adjacent two be equipped with M between the heating plate the filter, M is for being greater than 2 positive integer.

4. The filter of claim 2, wherein the heater further comprises:

the first shell is configured into a shell with two open ends and an accommodating cavity inside; an opening is formed in the first shell;

the filter assembly is arranged in the accommodating cavity, and the air inlet side and the air outlet side respectively correspond to two ends of the first shell;

the electrical connection is exposed through the opening.

5. The filter of claim 4, wherein the filter plate has a fastening portion on a side thereof;

when the at least two filter sheets are compactly stacked, the fixing parts of the at least two filter sheets form a first fixing structure, and the first fixing structure is positioned on the third side and/or the fourth side of the filter assembly;

correspondingly, a second fixing structure corresponding to the first fixing structure is arranged on the cavity wall of the accommodating cavity, and the second fixing structure is fixedly connected with the first fixing structure to fixedly connect the filter assembly and the first shell.

6. The filter of claim 1, further comprising:

the second shell is configured into a shell with two open ends and an accommodating cavity inside;

the filter assembly is arranged in the accommodating cavity, and the air inlet side and the air outlet side respectively correspond to two ends of the second shell;

the heater is provided on an end of the second housing corresponding to the intake side.

7. A filter as claimed in any one of claims 1 to 6 wherein the filter sheet comprises a filter felt and a frame; the frame is arranged on the filter felt and is arranged along the edge of the filter felt;

the at least two filter sheets are compactly stacked, and part of the frame on each filter sheet is in contact with the first face of the adjacent filter sheet; wherein,

the number of the filter sheets is at least three, and in every three adjacent filter sheets, on an axis of the filter sheet in the middle position, the filter sheets on the two sides are arranged in a staggered mode relative to the filter sheet in the middle position in the same direction and are used for forming the air inlet side and the air outlet side.

8. The filter of claim 7,

the number of the filter sheets is at least three, and the end faces of the filter sheets on two sides in every three adjacent filter sheets are aligned.

9. The filter of claim 7,

the filter disc is provided with at least one heat-conducting fin which is arranged on the frame along a connecting line between the air inlet side and the air outlet side;

the size of the heat conducting fin is smaller than that of an area defined by the frame.

10. The filter of claim 9, wherein the heat conducting sheet has a bent structure.