Active filter with heat dissipation system

Abstract

The invention discloses an active filter with a heat dissipation system, and relates to the technical field of active filters. The active filter with the heat dissipation system comprises a main machine body, an opening and closing door is hinged to the outer surface of the main machine body, an external heat dissipation device, a dustproof device and an air inlet hole are arranged on the outer surface of the main machine body, a supporting frame is arranged on the outer surface of the external heat dissipation device, and a water cooling device is arranged on the upper surface of the supporting frame. The top of the inner surface of the main machine body is provided with an internal heat dissipation fan, the top of the main machine body is provided with an air outlet hole, the upper surface of the main machine body is fixedly connected with a spring, the top end of the spring is fixedly connected with an arc-shaped top cover, the external heat dissipation device comprises a connecting shell, and the connecting shell is internally provided with an air inlet fan and an air exhaust fan; a first temperature sensor is arranged on the outer surface of the connecting shell, internal heat dissipation and external heat dissipation are conducted at the same time, and air cooling heat dissipation and water cooling heat dissipation are matched, so that rapid heat dissipation of the active filter is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of active filters, and specifically to an active filter with a heat dissipation system. Background Art

[0002] An active filter is a new type of special equipment for power harmonic governance made by adopting modern power electronic technology and digital signal processing technology based on high-speed DSP devices. It consists of two main parts: an instruction current operation circuit and a compensation current generation circuit. The instruction current operation circuit monitors the current in the line in real time, converts the analog current signal into a digital signal, sends it to a high-speed digital signal processor (DSP) for signal processing, separates the harmonics from the fundamental wave, and sends drive pulses to the compensation current generation circuit in the form of pulse width modulation (PWM) signals to drive IGBT or IPM power modules, generating compensation currents with the same amplitude and opposite polarity to the grid harmonic currents and injecting them into the grid to compensate or cancel the harmonic currents and actively eliminate power harmonics.

[0003] Existing active filters usually use cooling fans for air cooling. However, due to the high power consumption of active filters and the large amount of heat generated, a single cooling fan is difficult to dissipate the heat inside the active filter in time, and the heat is still likely to accumulate in the active filter body, affecting the service life of the active filter. Summary of the Invention

[0004] Aiming at the deficiencies of the existing problems, the present invention provides an active filter with a heat dissipation system to solve the problems presented in the above background art.

[0005] To solve the above problems, the present invention is realized through the following technical solutions: An active filter with a heat dissipation system, comprising a main body. An opening and closing door is hinged on the outer surface of the main body. An external heat dissipation device, a dust prevention device and an air inlet hole are arranged on the outer surface of the main body. A support frame is arranged on the outer surface of the external heat dissipation device. A water cooling device is arranged on the upper surface of the support frame. An internal heat dissipation fan is arranged at the top of the inner surface of the main body. An air outlet hole is arranged at the top of the main body. A spring is fixedly connected to the upper surface of the main body. The top end of the spring is fixedly connected to an arc-shaped top cover. The external heat dissipation device includes a connection housing. An air inlet fan and an exhaust fan are arranged inside the connection housing. A first temperature sensor is arranged on the outer surface of the connection housing. A first temperature probe is arranged on the outer surface of the first temperature sensor. The water cooling device includes a heat exchange water tank. A first conduit is arranged inside the heat exchange water tank. A solenoid valve is arranged inside the first conduit. A water pump is arranged on the outer surface of the heat exchange water tank. A second conduit and a third conduit are fixedly connected to the outer surface of the water pump. A second temperature sensor is arranged on the outer surface of the water pump. A second temperature probe is arranged on the outer surface of the second temperature sensor. Heat dissipation fins are fixedly connected to the upper surface of the heat exchange water tank. The dust prevention device includes a protective cover housing. Ventilation holes and mounting grooves are formed on the outer surface of the protective cover housing. A motor is arranged on the outer surface of the protective cover housing. A rotating shaft is fixedly connected to the output end of the motor. A connection sleeve is threadedly connected to the outer surface of the rotating shaft. A dust filter net is arranged on the outer surface of the connection sleeve. A gas flow sensor is fixedly connected to the inner surface of the protective cover housing.

[0006] Preferably, the dust prevention device is arranged outside the air inlet hole. The air outlet hole is arranged directly above the internal heat dissipation fan. The arc-shaped top cover is arranged directly above the main body.

[0007] Preferably, the inside of the connection housing is fixedly connected to the outer surface of the main body. The support frame is arranged on the outer surface of the connection housing. The air inlet fan and the exhaust fan are arranged on both sides of the main body.

[0008] Preferably, a convex block is fixedly connected to the inner surface of the connection housing. The number of the convex blocks is several. The outer surface of the first temperature probe penetrates through the connection housing and extends into the inner cavity.

[0009] Preferably, the heat dissipation fins are arranged opposite to the exhaust fan. The outer surfaces of the first conduit and the second conduit both penetrate through the connection housing and extend into the inner cavity. The outer surfaces of the third conduit and the second temperature probe penetrate through the heat exchange water tank and extend into the inner cavity.

[0010] Preferably, a water inlet pipe is fixedly connected to the top of the heat exchange water tank, a first cover is arranged at the top of the water inlet pipe, a drain pipe is fixedly connected to the bottom of the heat exchange water tank, and a second cover is arranged at the bottom of the drain pipe.

[0011] Preferably, the outer surface of the protective housing is fixedly connected to the outer surface of the main body, the interior of the protective housing is communicated with the interior of the main body through an air inlet hole, and the ventilation hole is arranged on one side of the protective housing away from the air inlet hole.

[0012] Preferably, a rubber edge is arranged at the edge of the outer surface of the dust filter net. There are four dust filter nets, and the included angle between adjacent two groups is 90 degrees. A connection cover is arranged at the side of the outer surface of the connection sleeve, and the outer surface of the connection cover is adapted to the interior of the installation groove.

[0013] Preferably, the installation groove is arranged on one side of the protective housing away from the motor. A rotating handle is fixedly connected to the end of the connection sleeve, and a handle is fixedly connected to the outer surface of the connection cover.

[0014] Preferably, the air inlet hole and the gas flow sensor are arranged below the dust filter net, and the ventilation hole is arranged above the dust filter net.

[0015] The present invention provides an active filter with a heat dissipation system, which has the following beneficial effects: First, for the active filter with the heat dissipation system, through the cooperation between the internal heat dissipation fan and the external heat dissipation device, the internal heat dissipation fan is used to discharge the heat inside the active filter for heat dissipation from the inside of the device, and the external heat dissipation device is used to take away the heat transferred to the outer shell of the active filter for heat dissipation from the outside of the device. Through the way of simultaneous internal and external heat dissipation, rapid heat dissipation of the active filter is achieved.

[0016] Second, for the active filter with the heat dissipation system, through the water cooling device, the internal heat dissipation fan and the external heat dissipation device, the internal heat dissipation fan and the external heat dissipation device dissipate heat from the active filter by means of air cooling, and the water cooling device dissipates heat from the active filter by means of water cooling. Through the cooperation of air cooling and water cooling, the heat dissipation speed of the active filter is further accelerated. Moreover, the airflow generated by the external heat dissipation device passes through the water remaining in the external heat dissipation device after passing through the water cooling device, and the evaporation heat absorption of water is utilized to further improve the heat dissipation efficiency of the external heat dissipation device, thereby further improving the heat dissipation efficiency of the active filter.

[0017] III. The active filter with a heat dissipation system can filter out the dust in the air entering the active filter through the air inlet hole by means of the dust-proof device, so as to prevent dust from entering the active filter and causing a short circuit, extend the service life of the internal components of the active filter, and the four groups of dust filter nets cooperate with the motor, which can reduce the frequency of replacing the dust filter nets and improve the convenience of the device.

[0018] IV. The active filter with a heat dissipation system, through the spring and the arc-shaped top cover, the arc-shaped top cover can not only prevent dust from falling into the air outlet hole, but also cooperate with the spring to bounce off the dust falling on the arc-shaped top cover, reducing the operation of cleaning the top of the main body and reducing the workload of cleaning the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is a schematic structural diagram of the second perspective of the whole of the present invention; Figure 3 is a schematic structural diagram of the whole of the present invention when it is opened; Figure 4 is a schematic structural diagram of the external heat dissipation device of the present invention; Figure 5 is a schematic structural diagram of the second perspective of the external heat dissipation device of the present invention; Figure 6 is a schematic structural diagram of the water cooling device of the present invention; Figure 7 is a schematic sectional structural diagram of the heat exchange water tank of the present invention; Figure 8 is a schematic structural diagram of the dust-proof device of the present invention; Figure 9 is a disassembled structural diagram of the dust-proof device of the present invention.

[0020] In the figure: 1, main body; 2, opening and closing door; 3, external heat dissipation device; 301, connecting housing; 302, intake fan; 303, exhaust fan; 304, bump; 305, first temperature sensor; 306, first temperature probe; 4, support frame; 5, water cooling device; 501, heat exchange water tank; 502, first conduit; 503, solenoid valve; 504, water pump; 505, second conduit; 506, third conduit; 507, second temperature sensor; 508, second temperature probe; 509, water inlet pipe; 510, first cover; 511, drain pipe; 512, second cover; 513, heat dissipation fins; 6, internal heat dissipation fan; 7, air outlet hole; 8, dust prevention device; 801, protective housing; 802, ventilation hole; 803, mounting groove; 804, motor; 805, rotating shaft; 806, connecting sleeve; 807, connecting cover; 808, dust filter net; 809, rubber edge; 810, turning handle; 811, handle; 812, gas flow sensor; 9, air inlet hole; 10, spring; 11, arc-shaped top cover. Detailed implementation mode

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and the detailed implementation mode. The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustive or limited to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes. Embodiment

[0022] As Figures 1-9As shown in the figure, the present invention provides a technical solution: an active filter with a heat dissipation system, including a main body 1, an opening and closing door 2 is hinged on the outer surface of the main body 1, an external heat dissipation device 3, a dust prevention device 8 and an air inlet hole 9 are arranged on the outer surface of the main body 1, a support frame 4 is arranged on the outer surface of the external heat dissipation device 3, a water cooling device 5 is arranged on the upper surface of the support frame 4, an internal heat dissipation fan 6 is arranged at the top of the inner surface of the main body 1, an air outlet hole 7 is arranged at the top of the main body 1, a spring 10 is fixedly connected to the upper surface of the main body 1, the top end of the spring 10 is fixedly connected to an arc-shaped top cover 11, the external heat dissipation device 3 includes a connection shell 301, an air inlet fan 302 and an exhaust fan 303 are arranged inside the connection shell 301, a first temperature sensor 305 is arranged on the outer surface of the connection shell 301, a first temperature probe 306 is arranged on the outer surface of the first temperature sensor 305, the water cooling device 5 includes a heat exchange water tank 501, a first conduit 502 is arranged inside the heat exchange water tank 501, a solenoid valve 503 is arranged inside the first conduit 502, a water pump 504 is arranged on the outer surface of the heat exchange water tank 501, a second conduit 505 and a third conduit 506 are fixedly connected to the outer surface of the water pump 504, a second temperature sensor 507 is arranged on the outer surface of the water pump 504, a second temperature probe 508 is arranged on the outer surface of the second temperature sensor 507, a heat dissipation fin 513 is fixedly connected to the upper surface of the heat exchange water tank 501, the dust prevention device 8 includes a protective cover shell 801, ventilation holes 802 and installation grooves 803 are formed on the outer surface of the protective cover shell 801, a motor 804 is arranged on the outer surface of the protective cover shell 801, a rotating shaft 805 is fixedly connected to the output end of the motor 804, a connection sleeve 806 is threadedly connected to the outer surface of the rotating shaft 805, a dust filter net 808 is arranged on the outer surface of the connection sleeve 806, and a gas flow sensor 812 is fixedly connected to the inner surface of the protective cover shell 801.

[0023] The dust prevention device 8 is arranged outside the air inlet hole 9, the air outlet hole 7 is arranged directly above the internal heat dissipation fan 6, and the arc-shaped top cover 11 is arranged directly above the main body 1.

[0024] The inside of the connection shell 301 is fixedly connected to the outer surface of the main body 1, the support frame 4 is arranged on the outer surface of the connection shell 301, and the air inlet fan 302 and the exhaust fan 303 are arranged on both sides of the main body 1.

[0025] A convex block 304 is fixedly connected to the inner surface of the connection shell 301, the number of the convex blocks 304 is several, and the outer surface of the first temperature probe 306 penetrates through the connection shell 301 and extends into the inner cavity.

[0026] The heat dissipation fin 513 is arranged opposite to the exhaust fan 303. The outer surfaces of the first duct 502 and the second duct 505 both penetrate and connect to the housing 301 and extend into the inner cavity. The outer surfaces of the third duct 506 and the second temperature probe 508 penetrate the heat exchange water tank 501 and extend into the inner cavity.

[0027] A water inlet pipe 509 is fixedly connected to the top of the heat exchange water tank 501. A first cover 510 is arranged at the top of the water inlet pipe 509. A drain pipe 511 is fixedly connected to the bottom of the heat exchange water tank 501. A second cover 512 is arranged at the bottom of the drain pipe 511.

[0028] The outer surface of the protective housing 801 is fixedly connected to the outer surface of the main body 1. The interior of the protective housing 801 is connected to the interior of the main body 1 through the air inlet hole 9. The ventilation hole 802 is arranged on the side of the protective housing 801 away from the air inlet hole 9.

[0029] A rubber edge 809 is arranged at the edge of the outer surface of the dust filter net 808. There are four dust filter nets 808, and the included angle between adjacent two groups is 90 degrees. A connection cover 807 is arranged at the side of the outer surface of the connection sleeve 806. The outer surface of the connection cover 807 is adapted to the interior of the installation groove 803.

[0030] The installation groove 803 is arranged on the side of the protective housing 801 away from the motor 804. The end of the connection sleeve 806 is fixedly connected with a turning handle 810. The outer surface of the connection cover 807 is fixedly connected with a handle 811.

[0031] The air inlet hole 9 and the gas flow sensor 812 are arranged below the dust filter net 808. The ventilation hole 802 is arranged above the dust filter net 808.

[0032] During use, the internal heat dissipation fan 6 blows the heat inside the main body 1 outwards. The air flow is led out from the air outlet hole 7. The outside air passes through the dust prevention device 8 and then enters the interior of the main body 1 from the air inlet hole 9. The air inlet hole 9 cooperates with the internal heat dissipation fan 6 to make the air flow inside the main body 1, which is convenient for leading out the heat inside the main body 1. At the same time, the heat inside the main body 1 will also be transferred to its outer shell. The air inlet fan 302 and the exhaust fan 303 are started to make the air flow inside the connection housing 301, that is, the air flow occurs around the outer shell of the main body 1. The air flow takes away the heat on the outer shell of the main body 1, and the active filter is quickly cooled by the way of simultaneous internal heat dissipation and external heat dissipation.

[0033] Through the water cooling device 5, when the first temperature probe 306 detects that the temperature on the main body 1 exceeds the preset threshold, the solenoid valve 503 is opened, so that the cold water in the heat exchange water tank 501 enters the inner cavity of the connection housing 301 through the first conduit 502. Note that the liquid level of the cold water in the heat exchange water tank 501 after being introduced into the connection housing 301 is always lower than that of the intake fan 302 and the exhaust fan 303. The cold water entering the connection housing 301 absorbs the heat on the main body 1. When the first temperature probe 306 detects that the water temperature rises to a certain value, the water pump 504 is turned on, and the hot water in the connection housing 301 is returned to the heat exchange water tank 501 through the second conduit 505 and the third conduit 506. Since there are a plurality of bumps 304 provided on the inner wall of the connection housing 301, there is still moisture remaining on the inner wall of the connection housing 301. At this time, the intake fan 302 and the exhaust fan 303 cooperate to generate an air flow inside the connection housing 301 that passes through the remaining moisture, accelerating the evaporation of the remaining water. The heat absorption during water evaporation is used to reduce the temperature around the main body 1, further accelerating the cooling of the main body 1. The heat of the hot water returned to the heat exchange water tank 501 is transferred to the heat dissipation fins 513, and the air flow blown out by the exhaust fan 303 just passes through the heat dissipation fins 513, accelerating the dissipation of the heat on the heat dissipation fins 513, thereby accelerating the heat dissipation rate of the hot water in the heat exchange water tank 501. When the second temperature probe 508 detects that the water temperature in the heat exchange water tank 501 drops to an appropriate temperature, the solenoid valve 503 is opened again, so that the cold water in the heat exchange water tank 501 enters the connection housing 301 again. In this way, through the cooperation of air cooling and water cooling, the heat dissipation rate of the active filter is further accelerated.

[0034] Through the dust-proof device 8, when the internal cooling fan 6 operates, the outside air first enters the protective housing 801 through the ventilation holes 802. Since the included angle between adjacent dust-filtering nets 808 is 90 degrees, the parallel dust-filtering nets 808 are on the same straight line. The two horizontal groups of dust-filtering nets 808 divide the protective housing 801 into upper and lower spaces. The outside air enters through the ventilation holes 802 and then passes through the two horizontal groups of dust-filtering nets 808. The dust in the air is filtered out by the dust-filtering nets 808, and the filtered air then enters the main body 1 through the air inlet holes 9, which can prevent the airflow entering the main body 1 from bringing dust into the main body 1. When the gas flow sensor 812 detects that the gas flow rate below the two horizontal groups of dust-filtering nets 808 slows down to a certain value, it means that these two groups of dust-filtering nets 808 are blocked by dust more. Then the motor 804 is turned on, so that the rotating shaft 805 drives the connecting sleeve 806 to rotate 90 degrees, making the two horizontally dust-blocked groups of dust-filtering nets 808 rotate to the vertical state, and the originally vertical dust-filtering nets 808 that are not blocked by dust rotate to the horizontal state. At this time, these two horizontal groups of dust-filtering nets 808 divide the protective housing 801 into upper and lower spaces again to continue filtering dust, which is convenient for reducing the frequency of replacing the dust-filtering nets 808. When replacing the dust-filtering nets 808, pull the handle 811 to separate the connecting cover 807 from the installation groove 803, and then rotate the rotating handle 810 to disassemble the connecting sleeve 806 from the rotating shaft 805, which is convenient for cleaning the dust-filtering nets 808. After cleaning, screw the connecting sleeve 806 back onto the rotating shaft 805. After the connecting sleeve 806 and the dust-filtering nets 808 are completely installed in the protective housing 801, the four dust-filtering nets 808 are exactly in two horizontal and two vertical states. Then push the connecting cover 807 into the installation groove 803. The rubber edge 809 is used to ensure that the airflow can only pass through the two horizontal dust-filtering nets 808.

[0035] Through the spring 10 and the arc-shaped top cover 11, the arc-shaped top cover 11 shields the top of the main body 1, which can prevent dust from falling into the air outlet holes 7. The dust directly falls on the arc-shaped top cover 11. When the airflow generated by the internal cooling fan 6 is led out from the air outlet holes 7, the airflow blows towards the arc-shaped top cover 11, causing the arc-shaped top cover 11 to pull the spring 10. With the cooperation of the spring 10, when the internal cooling fan 6 stops operating, the arc-shaped top cover 10 will bounce up and down, causing the dust falling on the arc-shaped top cover 11 to be bounced off, reducing the operation of cleaning the top of the main body 1.

[0036] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. An active filter with a heat dissipation system, comprising a main body (1), characterized in that: The outer surface of the main body (1) is hinged with an opening and closing door (2); the outer surface of the main body (1) is provided with an external heat dissipation device (3), a dustproof device (8) and an air inlet (9); the outer surface of the external heat dissipation device (3) is provided with a support frame (4); the upper surface of the support frame (4) is provided with a water cooling device (5); the top of the inner surface of the main body (1) is provided with an internal heat dissipation fan (6); the top of the main body (1) is provided with an air outlet (7); the upper surface of the main body (1) is fixedly connected with a spring (10); the spring (10 ) is fixedly connected to the top of a curved top cover (11), the external heat dissipation device (3) comprises a connecting shell (301), an air inlet fan (302) and an air exhaust fan (303) are arranged inside the connecting shell (301), a first temperature sensor (305) is arranged on the outer surface of the connecting shell (301), a first temperature probe (306) is arranged on the outer surface of the first temperature sensor (305), the water cooling device (5) comprises a heat exchange water tank (501), a first conduit (502) is arranged inside the heat exchange water tank (501), A solenoid valve (503) is arranged inside the first conduit (502); a water pump (504) is arranged on the outer surface of the heat exchange water tank (501); a second conduit (505) and a third conduit (506) are fixedly connected to the outer surface of the water pump (504); a second temperature sensor (507) is arranged on the outer surface of the water pump (504); a second temperature probe (508) is arranged on the outer surface of the second temperature sensor (507); a heat dissipation fin (513) is fixedly connected to the upper surface of the heat exchange water tank (501); and the dust prevention device ( 8) comprises a protective cover shell (801), the outer surface of the protective cover shell (801) is provided with a ventilation hole (802) and a mounting groove (803), the outer surface of the protective cover shell (801) is provided with a motor (804), the output end of the motor (804) is fixedly connected to a rotating shaft (805), the outer surface of the rotating shaft (805) is threadedly connected to a connecting sleeve (806), the outer surface of the connecting sleeve (806) is provided with a dust filter (808), and the inner surface of the protective cover shell (801) is fixedly connected to a gas flow sensor (812).

2. The active filter with a heat dissipation system according to claim 1, characterized in that: The dustproof device (8) is arranged outside the air inlet (9), the air outlet (7) is arranged directly above the internal cooling fan (6), and the arc-shaped top cover (11) is arranged directly above the main body (1).

3. The active filter with a heat dissipation system according to claim 1, characterized in that: The interior of the connecting shell (301) is fixedly connected to the outer surface of the main body (1), the supporting frame (4) is arranged on the outer surface of the connecting shell (301), and the air inlet fan (302) and the air exhaust fan (303) are arranged on both sides of the main body (1).

4. The active filter with a heat dissipation system according to claim 1, characterized in that: The inner surface of the connection shell (301) is fixedly connected with a bump (304), the bumps (304) being in a plurality, and the outer surface of the first temperature probe (306) penetrates the connection shell (301) and extends to the inner cavity.

5. The active filter with a heat dissipation system according to claim 1, characterized in that: The heat dissipation fins (513) are arranged at a position opposite to the exhaust fan (303); the outer surfaces of the first duct (502) and the second duct (505) penetrate the connecting shell (301) and extend to the inner cavity; the outer surfaces of the third duct (506) and the second temperature probe (508) penetrate the water exchange tank (501) and extend to the inner cavity.

6. The active filter with a heat dissipation system according to claim 1, characterized in that: The top of the heat exchange water tank (501) is fixedly connected to a water inlet pipe (509), and the top of the water inlet pipe (509) is provided with a first sealing cover (510). The bottom of the heat exchange water tank (501) is fixedly connected to a drainage pipe (511), and the bottom of the drainage pipe (511) is provided with a second sealing cover (512).

7. The active filter with a heat dissipation system according to claim 1, characterized in that: The outer surface of the protective cover shell (801) is fixedly connected to the outer surface of the main body (1), the interior of the protective cover shell (801) is connected to the interior of the main body (1) through the air inlet hole (9), and the ventilation hole (802) is arranged on a side of the protective cover shell (801) away from the air inlet hole (9).

8. The active filter with a heat dissipation system according to claim 1, characterized in that: A rubber edge (809) is provided at the edge of the outer surface of the dust filter (808); four dust filters (808) are provided, and the angle between two adjacent groups is ninety degrees; a connection cover (807) is provided at the side of the outer surface of the connection sleeve (806); the outer surface of the connection cover (807) is adapted to the interior of the installation groove (803).

9. The active filter with a heat dissipation system according to claim 8, characterized in that: The mounting groove (803) is arranged on a side of the protective cover shell (801) away from the motor (804), the end of the connecting sleeve (806) is fixedly connected to a rotating handle (810), and the outer surface of the connecting cover (807) is fixedly connected to a handle (811).

10. The active filter with a heat dissipation system according to claim 1, characterized in that: The air inlet hole (9) and the gas flow sensor (812) are arranged below the dust filter (808), and the ventilation hole (802) is arranged above the dust filter (808).

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