Fresh air purification device

Abstract

A fresh air purification device includes a casing, the casing has a fresh air inlet and a fresh air outlet, and is characterized in that: a primary filter, a high-efficiency filter, a dust collector, a dust collector and a fan are installed inside the casing, the primary filter and the high-efficiency filter are sequentially arranged in the air duct between the fresh air inlet and the air inlet of the fan, the dust collector is used to remove dust attached to the primary filter, and the removed dust is collected in the dust collector, and the air outlet of the fan is connected to the fresh air outlet. The advantage of the present invention is that the primary filter and the high-efficiency filter of the fresh air purification device are sequentially arranged in the air duct between the fresh air inlet and the air inlet of the fan, the dust attached to the primary filter can be removed by the dust collector, and the removed dust is collected in the dust collector, so that the filter can always be kept clean after the purification device has been working for a long time, thereby improving the air filtration effect, and also helping to extend the service life of the filter.

Description

Technical Field

[0001] The invention relates to a fresh air purification device. Background Art

[0002] As society becomes more and more modernized, people's production and lifestyles have also changed greatly. People spend more and more time working, living and doing activities indoors. Work, entertainment, sports and other activities can all be done indoors. According to statistics, people spend an average of more than 80% of their time indoors every day. Therefore, indoor air quality has a vital impact on human health.

[0003] At present, there are fresh air ventilators on the market for replacing fresh air. When the fresh air ventilator is working, outdoor air enters the ventilator from the outdoor air inlet, and then passes through the primary filter, medium filter, and electrostatic dust removal box in turn to remove impurities in the outside air. At the same time, indoor air enters the ventilator from the indoor air inlet, and the heat of the indoor air is exchanged to the new air coming in from the outside through the heat exchanger. After that, the new air enters the room after further processing, and the old indoor air is discharged to the outside. Although the above-mentioned fresh air ventilator can effectively purify indoor air, after the ventilator is used for a long time, the filtered dust particles are easy to adhere to the primary filter, medium filter and electrostatic dust removal box, causing them to be blocked, which leads to poor air filtration effect. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a fresh air purification device with a simple structure and good air filtering effect in view of the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the fresh air purification device comprises a casing, the casing having a fresh air inlet and a fresh air outlet, and is characterized in that a primary filter, a high-efficiency filter, a dust collector, a dust collector and a fan are installed inside the casing, the primary filter and the high-efficiency filter are arranged in sequence in the air duct between the fresh air inlet and the fan inlet, the dust collector is used to remove dust attached to the primary filter, and the removed dust is collected in the dust collector, and the air outlet of the fan is connected to the fresh air outlet.

[0006] The primary filter screen can rotate back and forth under the drive of the driving mechanism, the dust collector is always in contact with the surface of the primary filter screen, and the primary filter screen can drive the dust collector to rotate synchronously.

[0007] As a preferred solution, the driving mechanism includes a motor, a first sleeve, a second sleeve, a support shaft and a rotating shaft installed in the housing. The first sleeve, the second sleeve, the support shaft and the rotating shaft are axially arranged in parallel. The motor drives the first sleeve to rotate. The two ends of the primary filter respectively bypass the rotating shaft and the support shaft and are respectively wound on the first sleeve and the second sleeve. The dust collector includes a rotating shaft and a cleaning brush installed on the rotating shaft. The rotating shaft is close to the rotating shaft and is parallel to the rotating shaft. The rotating shaft drives the rotating shaft to rotate, and the cleaning brush is always in contact with the primary filter. In this way, the primary filter can move back and forth between the first sleeve and the second sleeve, so that the cleaning brush can clean the entire filter.

[0008] Further preferably, the second sleeve is located above the first sleeve, and the first sleeve and the second sleeve are close to the fresh air inlet, the support shaft is above the rotating shaft, and the support shaft and the rotating shaft are close to the high-efficiency filter.

[0009] In order to make the rotation speed of the rotating shaft greater than the rotation speed of the rotating shaft, a gear acceleration mechanism is installed between the rotating shaft and the rotating shaft, which can make the rotation speed of the rotating shaft greater than the rotation speed of the rotating shaft.

[0010] The dust collector may have a variety of structures. Preferably, the dust collector is a dirt collecting box, and the dirt collecting box is located directly below the cleaning brush.

[0011] Further preferably, the motor is a reduction motor.

[0012] Further preferably, the rotating shaft is a driven shaft that rotates synchronously with the primary filter. The primary filter and the rotating shaft are closely matched, so that the primary filter can drive the rotating shaft to rotate when it moves.

[0013] As another preferred solution, the driving mechanism includes a reduction motor, a first support shaft, a second support shaft and a third support shaft, the output shaft of the reduction motor is coaxially arranged with the first support shaft, the second bearing shaft and the third support shaft, the primary filter is enclosed on the output shaft of the reduction motor, the first support shaft, the second support shaft and the third support shaft and rotates under the drive of the reduction motor, and the primary filter forms a first filter surface and a second filter surface that are relatively arranged, the first filter surface is close to the fresh air inlet, and the second filter surface is close to the high-efficiency filter, the dust collector includes a rotating shaft and a cleaning brush installed on the rotating shaft, the rotating shaft is close to the first support shaft and parallel to the first support shaft, the first support shaft drives the rotating shaft to rotate, and the cleaning brush is always in contact with the primary filter. In this way, bipolar filtration of the primary filter can be formed, which greatly improves the filtering effect.

[0014] Further preferably, the fan is a centrifugal fan.

[0015] In order to make the fresh air flow into the casing smoother, the air inlet of the fan faces the fresh air inlet, and the air outlet of the fan faces the fresh air outlet.

[0016] Compared with the prior art, the advantages of the present invention are: the primary filter and the high-efficiency filter of the fresh air purification device are arranged in sequence in the air duct between the fresh air inlet and the fan inlet, and the dust attached to the primary filter can be removed by a dust collector, and the removed dust is collected in the dust collector, so that the filter can always be kept clean after the purification device has been working for a long time, thereby improving the air filtration effect, and at the same time it is also beneficial to extend the service life of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0018] Figure 2 This is a schematic diagram of the installation structure of the primary filter screen according to the first embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation structure of the first embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the installation structure of the second embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings.

[0022] Embodiment 1:

[0023] like Figure 1 and Figure 2 As shown, the fresh air purification device in this embodiment includes a housing 1, the housing 1 has a fresh air inlet 11 and a fresh air outlet 12, and a primary filter 2, a high-efficiency filter 3, a dust collector 4, a dust collector 5 and a fan 6 are installed inside the housing 1. Among them, the primary filter 2 and the high-efficiency filter 3 are sequentially arranged in the air duct between the fresh air inlet 11 and the air inlet of the fan 6, the dust collector 4 is used to remove dust attached to the primary filter 2, and the removed dust is collected in the dust collector 5, and the air outlet of the fan 6 is connected to the fresh air outlet 12. The fan 6 adopts a centrifugal fan, and the air inlet of the fan 6 faces the fresh air inlet 11, and the air outlet of the fan 6 faces the fresh air outlet 12.

[0024] In this embodiment, a driving mechanism for driving the primary filter 2 to rotate is installed in the housing 1, and the driving mechanism includes a motor 71, a first sleeve 72, a second sleeve 73, a support shaft 74 and a rotating shaft 75. The first sleeve 72, the second sleeve 73, the support shaft 74 and the rotating shaft 75 are arranged axially in parallel, and the second sleeve 73 is located above the first sleeve 72, and the first sleeve 72 and the second sleeve 73 are close to the fresh air inlet 11, the support shaft 74 is above the rotating shaft 75, and the support shaft 74 and the rotating shaft 75 are close to the high-efficiency filter 3. The motor 71 adopts a reduction motor and is used to drive the first sleeve 72 to rotate. The two ends of the primary filter 2 are respectively bypassed by the rotating shaft 75 and the support shaft 74, and are respectively wound on the first sleeve 72 and the second sleeve 73. The rotating shaft 75 is a driven shaft, and the rotating shaft 75 and the primary filter 2 are closely matched. When the primary filter 2 moves, it can drive the rotating shaft 75 to rotate synchronously.

[0025] The dust collector 4 includes a rotating shaft 41 and a cleaning brush 42 mounted on the rotating shaft. The rotating shaft 41 is close to and parallel to the rotating shaft 75, and the rotating shaft 75 drives the rotating shaft 41 to rotate. In this embodiment, in order to increase the rotation speed of the rotating shaft 41, a gear acceleration mechanism 8 is installed between the rotating shaft 75 and the rotating shaft 41, which can make the rotation speed of the rotating shaft 41 greater than the rotation speed of the rotating shaft 75. The cleaning brush 42 is in a strip shape and is always in contact with the primary filter 2. As the rotating shaft 41 rotates, the cleaning brush 42 rotates continuously, thereby improving the cleaning effect.

[0026] The dust collecting box 5 of this embodiment is a dirt collecting box, and the dirt collecting box 5 is located directly below the cleaning brush 42, so that the cleaning brush 42 can brush the dust into the dirt collecting box.

[0027] like Figure 3 As shown, the fresh air purification device is wall-mounted, and a fresh air passage 91 connecting the fresh air inlet 11 and the outside is opened on the wall 9. A solar rain cover 10 is installed at the air inlet of the fresh air passage 91, and the solar rain cover 10 can be opened or closed as needed. When the purification device is not in use, the solar rain cover 10 closes the fresh air passage 91. When the purification device is enabled, the solar rain cover 10 is opened to prevent rainwater from entering the fresh air purification device through the fresh air passage 91.

[0028] When the fresh air purification device is working, outdoor air enters the housing 1 through the fresh air channel 91 and the fresh air inlet 11 in sequence, and enters the fan 6 after passing through the primary filter 2 and the primary filter 3 in sequence under the action of the fan 6. After working for a period of time, the motor 71 starts to rotate, and the primary filter 2 transitions from the first sleeve 72 to the second sleeve 73. At the same time, the cleaning brush 42 continuously cleans the corresponding position of the primary filter 2, and the dust and other debris brushed off enter the dust collection box, so that the primary filter 2 is kept clean. When the primary filter 2 is completely transitioned from the first sleeve 72 to the second sleeve 73, the motor 71 reverses, and the cleaned primary filter 2 is rewound onto the first sleeve 72, so as to achieve the purpose of cleaning and effectively improve the service life of the primary filter 2.

[0029] Embodiment 2:

[0030] like Figure 4 As shown, the driving mechanism of this embodiment includes a reduction motor 76, a first support shaft 77, a second support shaft 78 and a third support shaft 79, the output shaft of the reduction motor 76 is coaxially arranged with the first support shaft 77, the second bearing shaft 78 and the third support shaft 79, the primary filter 2 is enclosed on the output shaft of the reduction motor 76, the first support shaft 77, the second support shaft 78 and the third support shaft 79 and rotates under the drive of the reduction motor 76, and the primary filter 2 forms a first filter surface 21 and a second filter surface 22 arranged oppositely, the first filter surface 21 is close to the fresh air inlet 11, and the second filter surface 22 is close to the high-efficiency filter 3. The dust collector 4 of this embodiment includes a rotating shaft 41 and a cleaning brush 42 installed on the rotating shaft, the rotating shaft 41 is close to the first support shaft 77 and parallel to the first support shaft 77, the first support shaft 77 drives the rotating shaft 41 to rotate, the cleaning brush 42 is always in contact with the primary filter 2, and the rotation direction of the cleaning brush 42 is the same as the rotation direction of the first support shaft 77.

[0031] When working, the primary filter 2 of this embodiment can form a bipolar filter, which can prevent the pollutants adhering to the first filter surface 21 of the primary filter 2 from being directly blown into the high-efficiency filter 3 when rotating to the second filter surface 22, thereby greatly improving the purification effect. The rest of the structure of this embodiment is the same as that of the first embodiment, and will not be described in detail here.

Claims

1. A fresh air purification device, comprising a housing (1), wherein the housing (1) has a fresh air inlet (11) and a fresh air outlet (12), characterized in that: A primary filter (2), a high-efficiency filter (3), a dust collector (4), a dust collector (5) and a fan (6) are installed inside the housing (1). The primary filter (2) and the high-efficiency filter (3) are arranged in sequence in the air duct between the fresh air inlet (11) and the air inlet of the fan (6). The dust collector (4) is used to remove dust attached to the primary filter (2), and the removed dust is collected in the dust collector (5). The air outlet of the fan (6) is connected to the fresh air inlet (11). The fresh air outlet is connected to the primary filter (2), and the primary filter (2) can rotate back and forth under the drive of a driving mechanism. The driving mechanism comprises a motor (71) installed in the housing (1), a first sleeve (72), a second sleeve (73), a support shaft (74) and a rotating shaft (75). The first sleeve (72), the second sleeve (73), the support shaft (74) and the rotating shaft (75) are axially arranged in parallel. The motor drives the first sleeve (72) to rotate, and the two ends of the primary filter (2) rotate around The dust collector (4) passes through the rotating shaft (75) and the supporting shaft (74), and is respectively wound on the first sleeve (72) and the second sleeve (73). The dust collector (4) comprises a rotating shaft (41) and a cleaning brush (42) mounted on the rotating shaft. The rotating shaft (41) is close to the rotating shaft (75) and is parallel to the rotating shaft. The rotating shaft (75) drives the rotating shaft (41) to rotate. The cleaning brush (42) is always in contact with the primary filter screen (2). The second sleeve (73) is located at the first The first sleeve (72) and the second sleeve (73) are close to the fresh air inlet (11); the support shaft (74) is above the rotating shaft (75); the support shaft (74) and the rotating shaft (75) are close to the high-efficiency filter (3); a gear acceleration mechanism (8) is installed between the rotating shaft (75) and the rotating shaft (41) so that the rotating shaft speed is greater than the rotating shaft speed; the rotating shaft (75) is a driven shaft that rotates synchronously with the primary filter (2).

2. The fresh air purification device according to claim 1, characterized in that: The dust collector (5) is a dirt collection box, and the dirt collection box is located directly below the cleaning brush (42).

3. The fresh air purification device according to claim 1, characterized in that: The motor (71) is a reduction motor.

Images