An environmentally friendly furniture with an embedded special component for formaldehyde removal

Abstract

The present invention discloses an environment-friendly furniture with an embedded special component for formaldehyde removal, including a cabinet body. A bearing cross plate is connected to the inner wall of the cabinet body, and a first opening is provided on one side of the bearing cross plate. A vertical partition plate is connected between the top of the bearing cross plate and the inner wall of the top of the cabinet body, and a second opening is provided at the top of the vertical partition plate. An adjusting structure is provided between the vertical partition plate and the cabinet body, and a first baffle plate and a second baffle plate are respectively connected to the end parts of the adjusting structure. This environment-friendly furniture with an embedded special component for formaldehyde removal can remove formaldehyde from the indoor air and at the same time ventilate the air inside the cabinet body, avoiding the generation of peculiar smell due to the long-term closed state inside the cabinet, which affects the storage of items, and enhancing the functionality of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection furniture equipment, and specifically relates to an environmental protection furniture with an embedded special component for formaldehyde removal. Background Art

[0002] With the improvement of people's living standards and the continuous development of the home furnishing industry, home furnishings have become essential items in people's lives. Home furnishings refer to a series of things related to the living room, including home decoration, furniture configuration, electrical appliance placement, etc., and even the geographical location belongs to the category of home furnishings. Among home furnishing items, cabinets are the most commonly used. All kinds of cabinets hold different things. Since paints and the like are used in the production and manufacturing process of cabinets, which contain a large amount of formaldehyde. Formaldehyde is an organic chemical substance, usually a colorless aqueous solution or odor, with a pungent smell, which has an irritating effect on human eyes, nose, etc. However, most cabinets are enclosed, and the internal air does not circulate. Formaldehyde cannot be volatilized and removed for a long time, and will diffuse into the room or the cabinet, and adhere to things such as clothes or food, causing continuous effects on the human body through the skin, respiratory tract, etc., and may also cause sensory irritation to the human body, making the human body feel dry, irritating the eye mucosa, nasal mucosa, respiratory tract and skin, etc., and may also cause selective damage to vision and the retina. Long-term exposure to a formaldehyde environment may cause neurasthenia symptoms such as dizziness, headache, fatigue, dry and cracked skin, memory loss, drowsiness, etc. In addition, formaldehyde has been recognized by the World Health Organization as a carcinogenic and teratogenic substance, which can cause several types of cancers in the human body, attracting great attention from society.

[0003] However, although existing furniture can filter formaldehyde by installing existing formaldehyde purification equipment and machines, the formaldehyde purification equipment and machines and cabinets are mostly independent of each other and not integrated. There is no special space inside the cabinet for placing the purification equipment and machines. Moreover, due to the different sizes and shapes of the formaldehyde purification equipment, if it is placed inside or on top of the cabinet for use, it is not convenient to place and also affects the aesthetics. In addition, if the equipment and machine are placed inside the cabinet for use, although it is convenient to remove formaldehyde inside the cabinet, since the equipment will occupy the space inside the cabinet, it is not convenient to place items inside the cabinet, and it is also more troublesome to move the items out. And when the formaldehyde purification equipment and machine are placed inside the cabinet for use, when the door is closed, the heat generated during the operation of the equipment cannot be discharged in time, affecting the service life of the equipment. If the door is not closed, the air inside the cabinet and the room flows, and it is not easy to remove the formaldehyde deeply hidden in the materials inside the cabinet by the formaldehyde purification equipment and machine. Therefore, it is rather troublesome to remove formaldehyde inside the cabinet. So now it is necessary to design an environmental protection home furnishing cabinet that can be embedded inside the cabinet body, does not occupy the storage space of items, and after removing formaldehyde from the cabinet in the later stage, other functions can still be used, so that the formaldehyde removal mechanism in the later stage will not be idle. In this way, it neither occupies storage nor affects the aesthetics, and is also more convenient to use, without the need to laboriously place the formaldehyde purification equipment and machine.

[0004] In view of the above problems, it is urgent to innovate and design on the basis of the original environmental protection furniture. Summary of the Invention

[0005] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution significantly different from the existing technologies for an environmental protection furniture with an embedded special component for formaldehyde removal, so as to solve the problems proposed in the above background technology, that is, most of the equipment and cabinets for purifying formaldehyde are independent of each other and not integrated, there is no special space for placing the purification equipment in the cabinet, and due to the different sizes and shapes of the formaldehyde purification equipment, if it is placed in or on the cabinet for use, it will be inconvenient to place and affect the appearance.

[0006] To achieve the above object, the present invention provides the following technical solution: an environmental protection furniture with an embedded special component for formaldehyde removal, including a cabinet body, an inner wall of the cabinet body is connected with a bearing cross plate, and a first opening is arranged on one side of the bearing cross plate. A vertical partition is connected between the top of the bearing cross plate and the inner wall of the top of the cabinet body, and a second opening is arranged at the top of the vertical partition. An adjusting structure is arranged between the vertical partition and the cabinet body. The end parts of the adjusting structure are respectively connected with a first baffle and a second baffle. An air inlet net opening and an air outlet net opening are respectively arranged on one side of the outer wall of the cabinet body, and the first baffle and the second baffle are respectively attached to the air inlet net opening and the air outlet net opening. A fixing plate is connected between the bottom of the bearing cross plate and the bottom of the cabinet body, and a formaldehyde filter plate is snap-connected between the fixing plate and the cabinet body. An air pump is connected to the outer wall of the fixing plate through a pipeline, and the air pump is connected to a sealing plate installed on the inner wall of the bottom of the cabinet body through a pipeline. A heating mechanism is installed between the sealing plate and the cabinet body. A gas pipeline is connected between the top of the sealing plate and the bottom of the bearing cross plate. A stepped groove is arranged above the front of the cabinet body, and a sealing door is connected in the stepped groove through a hinge. A replacement door for facilitating the replacement of the formaldehyde filter plate is hinge-connected on one side below the front of the cabinet body, and a detachable plate for facilitating maintenance is bolt-connected on the other side below the front of the cabinet body. Guide plates and a collection structure are respectively installed on both sides of the outer wall of the cabinet body.

[0007] Preferably, the inside of the bearing cross plate is set as a cavity, and air-permeable mesh holes are arranged on the top of the bearing cross plate, and an opening and closing door is snap-connected to the side of the bearing cross plate.

[0008] Preferably, the adjusting structure includes a control rotating shaft, a full gear, a first rack and a second rack. The control rotating shaft is rotatably connected to the vertical partition, and the end of the control rotating shaft penetrates through the outer wall of the cabinet body and is connected with a manual disc, and the outer wall of the control rotating shaft is connected with a full gear. The first rack and the second rack are respectively meshed and connected on both sides of the full gear, and the ends of the first rack and the second rack far away from the full gear are respectively connected with the first baffle and the second baffle, and the sides of the first rack and the second rack are snap-slidingly connected with the cabinet body.

[0009] Preferably, the second baffle is arranged in an "L" shape, and one end of the second baffle located inside the second opening is in close fit with the inner wall of the second opening.

[0010] Preferably, the inner wall of the stepped groove is in close fit with the outer wall of the sealing door. There are two sealing doors, and they are snap-connected to each other.

[0011] Preferably, the collection structure includes a collection shell, an exhaust air mesh opening, a connecting rotating shaft, and a cleaning fan blade disc. A collection shell is installed on one side of the outer wall of the cabinet body, and an exhaust air mesh opening is arranged on the collection shell. The inner wall of the collection shell is rotatably connected with a connecting rotating shaft, and a cleaning fan blade disc is connected to the outer wall of the connecting rotating shaft. Moreover, a brush in contact with the exhaust air mesh opening is arranged at the end of the fan blade of the cleaning fan blade disc. A cleaning door is installed at the bottom of the collection shell.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: For this environment-friendly furniture with an embedded formaldehyde removal component, through the setting of the bearing cross plate, the storage space for items in the cabinet and the storage space for the formaldehyde removal mechanism are separated, which is more beautiful without affecting the storage of items. When formaldehyde removal is required for the cabinet body, the formaldehyde inside the cabinet materials is forced out by the internal circulation and closed storage method. First, the air pump is started to drive the air flow inside the cabinet, and the air enters below the bearing cross plate through the second opening and the first opening, contacts the formaldehyde filter plate to filter the formaldehyde in the air. The formaldehyde filter plate is made of Rongsen rock material with excellent formaldehyde removal effect. Then, the air is conveyed by the air pump to contact the heating mechanism to heat the air, and then is input into the bearing cross plate through the air pipe and dispersed into multiple hot air flows upward through the mesh holes at the top of the bearing cross plate. The heated air is beneficial to the release of formaldehyde deep in the materials, thereby improving the formaldehyde purification efficiency. In addition, fragrance agents and activated carbon can be filled in the bearing cross plate. When the hot air flows, the inner wall of the cabinet or items stored in the cabinet such as clothes can be fumigated and the activated carbon can absorb moisture and odors. In this way, internal circulation is carried out, and the heated air is beneficial to drying the inside of the cabinet, preventing the inside of the cabinet from getting damp in humid weather and affecting the storage of items.

[0013] Through the setting of the adjustment structure, the inner circulation and outer circulation modes can be switched inside the cabinet body, which enhances the practicability of the device. When external circulation is required, for example, when ventilating the inside of the cabinet or removing other objects in the room, such as formaldehyde attached to the curtains, by rotating the control shaft to drive the full gear to rotate, the first rack and the second rack engaged with the full gear move in opposite directions, thereby driving the first baffle and the second baffle to move closer to each other, disengaging the occlusion of the air inlet mesh and the air outlet mesh. At this time, the air pump is started, and the outside air is pumped into the cabinet through the air inlet mesh, and the impurity particles in the air are filtered through the air inlet mesh. The air entering the cabinet contacts the formaldehyde filter plate for filtration. As described above, it is then discharged through the air outlet mesh to achieve the purpose of external circulation, which can remove formaldehyde from the indoor air and also ventilate the air inside the cabinet, avoiding the generation of peculiar smell due to the long-term closed state inside the cabinet, affecting the storage of items, and enhancing the functionality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front sectional structure schematic diagram of the present invention;

[0015] Figure 2 It is a front view structure schematic diagram of the present invention in a closed state;

[0016] Figure 3 It is a front view structure schematic diagram of the present invention in an open state;

[0017] Figure 4 It is a side view structure schematic diagram of the full gear of the present invention;

[0018] Figure 5 It is a schematic diagram of the stepped groove structure of the present invention;

[0019] Figure 6 It is a schematic diagram of the sealing door structure of the present invention.

[0020] In the figure: 1, cabinet body; 2, bearing cross plate; 3, first opening; 4, vertical partition board; 5, second opening; 6, adjustment structure; 601, control shaft; 602, full gear; 603, first rack; 604, second rack; 7, first baffle; 8, second baffle; 9, air inlet mesh; 10, air outlet mesh; 11, fixing plate; 12, formaldehyde filter plate; 13, air pump; 14, sealing plate; 15, heating mechanism; 16, gas transmission pipe; 17, stepped groove; 18, sealing door; 19, replacement door; 20, easily detachable plate; 21, air guiding plate; 22, collection structure; 2201, collection shell; 2202, exhaust air mesh; 2203, connecting shaft; 2204, cleaning fan blade disc. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figure 1-6 , the present invention provides a technical solution: an environment-friendly furniture with an embedded formaldehyde removal special component, including a cabinet body 1, a bearing cross plate 2, a first opening 3, a vertical partition plate 4, a second opening 5, an adjusting structure 6, a control rotating shaft 601, a full gear 602, a first rack 603, a second rack 604, a first baffle 7, a second baffle 8, an air inlet net opening 9, an air outlet net opening 10, a fixing plate 11, a formaldehyde filter plate 12, an air pump 13, a sealing plate 14, a heating mechanism 15, an air delivery pipe 16, a stepped groove 17, a sealing door 18, a replacement door 19, a detachable plate 20, a wind guiding plate 21, a collection structure 22, a collection shell 2201, an exhaust net opening 2202, a connecting rotating shaft 2203 and a cleaning fan blade disc 2204. The inner wall of the cabinet body 1 is connected with a bearing cross plate 2, and a first opening 3 is arranged on one side of the bearing cross plate 2. A vertical partition plate 4 is connected between the top of the bearing cross plate 2 and the inner wall of the top of the cabinet body 1, and a second opening 5 is arranged at the top of the vertical partition plate 4. An adjusting structure 6 is arranged between the vertical partition plate 4 and the cabinet body 1, and the end parts of the adjusting structure 6 are respectively connected with a first baffle 7 and a second baffle 8. An air inlet net opening 9 and an air outlet net opening 10 are respectively arranged on one side of the outer wall of the cabinet body 1, and the first baffle 7 and the second baffle 8 are respectively in close fit with the air inlet net opening 9 and the air outlet net opening 10. A fixing plate 11 is connected between the bottom of the bearing cross plate 2 and the bottom of the cabinet body 1, and a formaldehyde filter plate 12 is clamped between the fixing plate 11 and the cabinet body 1. The outer wall of the fixing plate 11 is connected with an air pump 13 through a pipeline, and the air pump 13 is connected with a sealing plate 14 installed on the inner wall of the bottom of the cabinet body 1 through a pipeline, and a heating mechanism 15 is installed between the sealing plate 14 and the cabinet body 1. An air delivery pipe 16 is connected between the top of the sealing plate 14 and the bottom of the bearing cross plate 2. A stepped groove 17 is arranged above the front of the cabinet body 1, and a sealing door 18 is connected in the stepped groove 17 through a hinge. A replacement door 19 for facilitating the replacement of the formaldehyde filter plate 12 is connected by a hinge on one side below the front of the cabinet body 1, and a detachable plate 20 for facilitating maintenance is bolted on the other side below the front of the cabinet body 1. A wind guiding plate 21 and a collection structure 22 are respectively installed on both sides of the outer wall of the cabinet body 1.

[0023] The inside of the bearing cross plate 2 is arranged as a cavity, and air permeable mesh holes are arranged on the top of the bearing cross plate 2, and an opening and closing door is clamped on the side of the bearing cross plate 2.

[0024] The adjusting structure 6 includes a control rotating shaft 601, a full gear 602, a first rack 603 and a second rack 604. The control rotating shaft 601 is rotatably connected to the vertical partition plate 4, and the end of the control rotating shaft 601 penetrates through the outer wall of the cabinet body 1 and is connected with a manual disk. Moreover, the outer wall of the control rotating shaft 601 is connected with the full gear 602. The two sides of the full gear 602 are respectively meshed and connected with the first rack 603 and the second rack 604. And the ends of the first rack 603 and the second rack 604 far away from the full gear 602 are respectively connected with a first baffle 7 and a second baffle 8. And the sides of the first rack 603 and the second rack 604 are in snap-fit sliding connection with the cabinet body 1.

[0025] The second baffle 8 is arranged in an "L" shape, and one end of the second baffle 8 located inside the second opening 5 is in mutual fit with the inner wall of the second opening 5.

[0026] The inner wall of the stepped groove 17 is in mutual fit with the outer wall of the sealing door 18. And there are two sealing doors 18, and the sealing doors 18 are in snap-fit connection.

[0027] The collecting structure 22 includes a collecting shell 2201, an exhaust air net opening 2202, a connecting rotating shaft 2203 and a cleaning fan blade disk 2204. The collecting shell 2201 is installed on one side of the outer wall of the cabinet body 1. And the exhaust air net opening 2202 is arranged on the collecting shell 2201. The connecting rotating shaft 2203 is rotatably connected to the inner wall of the collecting shell 2201. And the outer wall of the connecting rotating shaft 2203 is connected with the cleaning fan blade disk 2204. And the ends of the fan blades of the cleaning fan blade disk 2204 are provided with brushes in contact with the exhaust air net opening 2202. A cleaning door is installed at the bottom of the collecting shell 2201.

[0028] Working principle: According to Figure 1 As shown in the figure, first place the cabinet body 1 in the working area, place the items in the cabinet body 1 for storage. When it is necessary to perform formaldehyde removal operation on the inside of the cabinet body 1, start the air pump 13 to drive the air in the cabinet body 1 to enter the lower part of the bearing cross plate 2 through the second opening 5 on the vertical partition plate 4 and the first opening 3 of the bearing cross plate 2. This air contacts the formaldehyde filter plate 12 to filter formaldehyde, and then is transported by the air pump 13 to contact the heating mechanism 15 inside the sealing plate 14 to heat the air, and then is input into the bearing cross plate 2 through the air pipe 16. Through the uniformly arranged mesh holes on the top of the bearing cross plate 2, the hot air is dispersed into multiple hot air flows and flows upward. This is conducive to the uniform contact of the hot air with the surrounding of the cabinet while avoiding the influence on the storage of items caused by the overly concentrated air flow. In addition, the heated air heats the inside of the cabinet body 1. On the one hand, it is conducive to promoting the rapid volatilization of formaldehyde in the cabinet body 1, thereby improving the evolution and removal efficiency of formaldehyde. On the other hand, it can dry the plates in the cabinet body 1 to avoid being affected by the weather and getting damp, which affects the storage of items. And by filling the bearing cross plate 2 with aromatic agents and activated carbon, etc., when the hot air flows, it can fumigate and deodorize the inner wall of the cabinet body 1 or items stored in the cabinet such as clothes.

[0029] When an external circulation is needed, such as for ventilating the inside of the cabinet body 1 or removing formaldehyde and drying the indoor environment, the rotation control rotating shaft 601 is rotated to drive the full gear 602 to rotate, so that the first rack 603 and the second rack 604 meshing on both sides of the full gear 602 move in opposite directions, and at the same time drive the first baffle 7 and the second baffle 8 to move, disengaging the shielding of the air inlet net opening 9 and the air outlet net opening 10. Then the air pump 13 is started, and the air in the room is drawn into the space between the cabinet body 1 and the bearing cross plate 2 through the air inlet net opening 9. The air inlet net opening 9 can filter and block impurity particles in the air. The air contacts the formaldehyde filter plate 12 for filtration, and then enters the cabinet body 1 after being dried by the heating mechanism 15, and is discharged from the cabinet body 1 through the air outlet net opening 10, so as to achieve the purpose of external circulation. In this way, the indoor air can be dehumidified and formaldehyde can be removed, and at the same time, the air in the cabinet body 1 can be ventilated, avoiding the generation of peculiar smell when the inside of the cabinet is in a closed state for a long time, which affects the storage of items. It is not necessary to use additional purification equipment to dehumidify or remove formaldehyde from the room, and it also avoids the occupation of indoor space by the purification equipment;

[0030] In addition, with the cabinet body 1 placed for a long time, a large amount of dust often accumulates on the top, which requires manual cleaning regularly, which is rather troublesome. At this time, in the external circulation mode, the air flow discharged from the air outlet net opening 10 is guided by the guide air plate 21. Due to the narrowing of the distance between the inclined surface at the end of the guide air plate 21 and the top of the cabinet body 1, the air flow can act on the top of the cabinet body 1 intensively. The flowing air flow carries the dust accumulated on the top of the cabinet body 1 into the collection shell 2201. When the air flow passes through the exhaust net opening 2202, the dust and impurities carried are filtered. The air flow drives the cleaning fan blade disc 2204 and the connecting rotating shaft 2203 to rotate, and the brush at the end of the blade of the cleaning fan blade disc 2204 cleans the dust and impurities filtered on the exhaust net opening 2202, thus avoiding manual regular cleaning and enhancing the practicability of the device. This is the working principle of the environmentally friendly furniture with an embedded formaldehyde removal special component.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly furniture with an embedded special component for formaldehyde removal, comprising a cabinet body (1), characterized in that: An inner wall of the cabinet body (1) is connected with a bearing cross plate (2), and a first opening (3) is arranged on one side of the bearing cross plate (2). A vertical partition plate (4) is connected between the top of the bearing cross plate (2) and the inner wall of the top of the cabinet body (1), and a second opening (5) is arranged at the top of the vertical partition plate (4). An adjusting structure (6) is arranged between the vertical partition plate (4) and the cabinet body (1). The end parts of the adjusting structure (6) are respectively connected with a first baffle (7) and a second baffle (8). An air inlet mesh opening (9) and an air outlet mesh opening (10) are respectively arranged on one side of the outer wall of the cabinet body (1), and the first baffle (7) and the second baffle (8) are respectively attached to the air inlet mesh opening (9) and the air outlet mesh opening (10). A fixing plate (11) is connected between the bottom of the bearing cross plate (2) and the bottom of the cabinet body (1), and a formaldehyde filter plate (12) is snap-connected between the fixing plate (11) and the cabinet body (1). An air pump (13) is connected to the outer wall of the fixing plate (11) through a pipeline, and the air pump (13) is connected to a sealing plate (14) installed on the inner wall of the bottom of the cabinet body (1) through a pipeline. A heating mechanism (15) is installed between the sealing plate (14) and the cabinet body (1). An air delivery pipe (16) is connected between the top of the sealing plate (14) and the bottom of the bearing cross plate (2). A stepped groove (17) is arranged above the front of the cabinet body (1), and a sealing door (18) is connected in the stepped groove (17) through a hinge. A replacement door (19) for facilitating the replacement of the formaldehyde filter plate (12) is hinge-connected to one side below the front of the cabinet body (1), and a detachable plate (20) for facilitating maintenance is bolt-connected to the other side below the front of the cabinet body (1). Air guiding plates (21) and a collecting structure (22) are respectively installed on both sides of the outer wall of the cabinet body (1); The adjusting structure (6) includes a control rotating shaft (601), a full gear (602), a first rack (603) and a second rack (604). The control rotating shaft (601) is rotatably connected to the vertical partition plate (4), and the end of the control rotating shaft (601) penetrates through the outer wall of the cabinet body (1) and is connected with a manual disk. A full gear (602) is connected to the outer wall of the control rotating shaft (601). The first rack (603) and the second rack (604) are respectively meshed and connected to both sides of the full gear (602). The ends of the first rack (603) and the second rack (604) far away from the full gear (602) are respectively connected with the first baffle (7) and the second baffle (8). The sides of the first rack (603) and the second rack (604) are snap-slidingly connected with the cabinet body (1); In the external circulation mode, the airflow discharged from the air outlet mesh opening (10) is guided by the air guiding plate (21). Due to the reduction of the distance between the inclined surface at the end of the air guiding plate (21) and the top of the cabinet body (1), the airflow can act on the top of the cabinet body (1) intensively. The airflow carries the dust accumulated on the top of the cabinet body (1) into the collecting structure when flowing.

2. The environmentally friendly furniture with an embedded formaldehyde removal special component according to claim 1, wherein: The interior of the bearing cross plate (2) is arranged as a cavity, and air permeable mesh holes are arranged on the top of the bearing cross plate (2). An opening and closing door is snap-connected to the side of the bearing cross plate (2).

3. The environmentally friendly furniture with an embedded formaldehyde removal component according to claim 1, characterized in that: The second baffle (8) is arranged in an "L" shape, and one end of the second baffle (8) located inside the second opening (5) is in mutual fit with the inner wall of the second opening (5).

4. The environmentally friendly furniture with an embedded formaldehyde removal component according to claim 1, characterized in that: The inner wall of the stepped groove (17) is in mutual fit with the outer wall of the sealing door (18), there are two sealing doors (18), and the sealing doors (18) are connected in a snap-fit manner.

5. An environment-friendly furniture with an embedded formaldehyde removal special component according to claim 1, characterized in that: The collection structure (22) includes a collection shell (2201), an exhaust air mesh opening (2202), a connecting rotating shaft (2203) and a cleaning fan blade disc (2204). A collection shell (2201) is installed on one side of the outer wall of the cabinet body (1), and an exhaust air mesh opening (2202) is arranged on the collection shell (2201). The inner wall of the collection shell (2201) is rotatably connected with a connecting rotating shaft (2203), and a cleaning fan blade disc (2204) is connected to the outer wall of the connecting rotating shaft (2203). Moreover, a brush in contact with the exhaust air mesh opening (2202) is arranged at the end of the fan blade of the cleaning fan blade disc (2204). A cleaning door is installed at the bottom of the collection shell (2201).

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