An ultra-thin fan coil structure with good noise reduction effect

Abstract

The present invention discloses an ultra-thin fan coil structure with good noise reduction effect, which relates to the technical field of fan coil structure, including a shell, a partition is fixedly connected to the bottom side of the shell, a wind guide cover is fixedly connected to the top of the partition, a buffer noise reduction component is arranged on the top of the wind guide cover, and the buffer noise reduction component includes a bent pipe, a connecting seat is fixedly connected to the top of the bent pipe, and an air outlet, a second cavity and a dispersion component are arranged inside the connecting seat. In the present invention, the airflow entering the air guide cover will drive the oblique blades, the first rotating shaft, the first bevel gear, the second bevel gear, the second rotating shaft, the driving pulley, the driven pulley, the connecting shaft and the protrusion to rotate, so that the rack drives multiple gears, the fixed shaft and the exhaust blades to rotate at the same time, and the exhaust blades will adjust the air outlet angle during the rotation process, so that the airflow at the air outlet can be evenly sprayed onto the surface of the heat exchanger from different angles and perform heat exchange with it.

Description

Technical Field

[0001] The present invention relates to the technical field of fan coil unit structures, and more particularly to an ultra-thin fan coil unit structure with good noise reduction effect. Background Art

[0002] The fan coil unit is referred to as fan coil. It is one of the terminal devices of the air-conditioning system composed of a small fan, an electric motor and a coil (air heat exchanger). It is usually installed indoors to cool or heat the indoor air or the outdoor mixed air through a surface cooler and then send it into the room to lower or raise the indoor temperature to meet people's comfort requirements. The ultra-thin fan coil is a type of fan coil unit, which is widely used due to its thin thickness and small footprint.

[0003] For example, Chinese patent document (CN206369317U) discloses an ultra-thin fan coil drainage device, which comprises a water outlet at the bottom of a water distributor (2) on one side of a fan (1), the water outlet being discharged to a water receiving tray (4) at the bottom of the fan (1) through a water outlet pipe (3), the water outlet being provided with a switch valve (5) for controlling the on and off of the water outlet pipe (3). The utility model provides an ultra-thin fan coil drainage device capable of discharging water accumulated at the bottom of the coil to avoid freezing and cracking of the coil so as to ensure the normal operation of the air conditioning system. However, during use of the device, the fan directly transports the external air to the heat exchanger, resulting in excessively concentrated contact between the air and the heat exchanger, thereby affecting the heat exchange effect of the structure. Therefore, certain improvements are needed. Summary of the invention

[0004] The purpose of the present invention is to propose an ultra-thin fan coil structure with good noise reduction effect in order to solve the problem that in the prior art, the fan directly transports the external air to the heat exchanger during use, resulting in excessively concentrated contact between the air and the heat exchanger, which in turn affects the heat exchange effect of the structure.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: an ultra-thin fan coil structure with good noise reduction effect, comprising a shell, a fixing seat is fixedly connected to one side of the bottom of the shell, a cleaning protection component is arranged inside the fixing seat, a partition is fixedly connected to the bottom side of the shell, an air guide cover is fixedly connected to the top of the partition, a buffer noise reduction component is arranged on the top of the air guide cover, the buffer noise reduction component comprises a bent pipe, a connecting seat is fixedly connected to the top of the bent pipe, an air outlet, a second cavity and a dispersion component are arranged inside the connecting seat;

[0006] The dispersion component includes a connecting shaft, the connecting shaft is rotatably connected to the inside of the connecting seat, and one end of the connecting shaft extends to the inside of the second cavity and is fixedly connected to a protrusion, a slide plate is provided on one side of the protrusion, and a rack is fixedly connected to the other side of the slide plate, and a plurality of gears are meshed and connected to the other side of the rack, a fixed shaft is fixedly connected to the inside of the gear, and the other end of the fixed shaft extends to the inside of the air outlet and is fixedly connected to the exhaust blade, the fixed shaft is rotatably connected to the inside of the connecting seat, a driven pulley is fixedly connected to the connecting shaft, a conveyor belt is wound around the driven pulley, and a driving pulley is provided on the other side of the conveyor belt, a second rotating shaft is fixedly connected to the inside of the driving pulley, the second rotating shaft is rotatably connected to the inside of the shell, the other end of the second rotating shaft is fixedly connected to the second bevel gear, one side of the second bevel gear is meshed and connected to the first bevel gear, the first bevel gear is fixedly connected to the first rotating shaft, one end of the first rotating shaft extends to the inside of the bent pipe and is fixedly connected to the oblique blade, and the first rotating shaft is rotatably connected to the bent pipe and the inside of the shell through a bearing.

[0007] Furthermore, second springs are fixedly connected to both sides of the rack, and both sides of the second spring are fixedly connected to the slide plate and the inner wall of the connecting seat respectively.

[0008] Furthermore, a sound-absorbing layer is arranged inside the curved pipe, the curved pipe is arranged in an S-shape, and a plurality of baffles are linearly distributed on the inner circumference of the curved pipe.

[0009] Furthermore, an air inlet is provided at the junction of the fixed seat and the shell, a fan is provided on one side of the air inlet, the fan is located on the bottom side of the shell, a filter is provided inside the air inlet, the filter is fixedly connected to the inside of the fixed seat, a third cavity is provided on one side of the filter, and the third cavity is located inside the fixed seat.

[0010] Furthermore, an exhaust port is provided on the top side of the shell, a first cavity is provided above the exhaust port, the first cavity is located inside the shell, a heat exchanger is provided below the exhaust port, and the heat exchanger is provided above the connecting seat.

[0011] Furthermore, the cleaning and protection component includes a driving motor, which is arranged inside the third cavity, and the top of the driving motor is fixedly connected to the inner wall of the fixed seat, one end of the output shaft of the driving motor is fixedly connected to a screw, a threaded sleeve is threadedly connected to the screw, and a sliding plate is fixedly connected to the outer peripheral side of the threaded sleeve.

[0012] Furthermore, the sliding plate is slidably connected inside the third cavity, a first protective layer is fixedly connected at the center of the top of the sliding plate, the other side of the first protective layer is fixedly connected to the inside of the fixed seat, and a cleaning brush is fixedly connected to one side of the bottom of the sliding plate, and the cleaning brush is arranged on the side opposite to the filter.

[0013] Furthermore, a main airbag is arranged below the sliding plate, the bottom of the main airbag is fixedly connected to the inner wall of the fixing seat, one side of the main airbag is connected to an air supply pipe, and the other side of the air supply pipe is connected to an auxiliary airbag.

[0014] Furthermore, the auxiliary airbag is arranged inside the first cavity, and one side of the auxiliary airbag is fixedly connected to the inner wall of the shell, and the other side of the auxiliary airbag is fixedly connected to a vertical plate, and the vertical plate is slidably connected inside the first cavity.

[0015] Furthermore, a first spring is fixedly connected to one side of the vertical plate away from the auxiliary airbag, and the other side of the first spring is fixedly connected to the inner wall of the shell. A second protective layer is provided on one side of the auxiliary airbag, and the other side of the second protective layer is fixedly connected to the inner wall of the shell. The second protective layer and the first protective layer are both configured to be retractable.

[0016] Compared with the prior art, the beneficial effects of this solution are as follows:

[0017] 1. In this scheme, by setting up a dispersion component, the airflow entering the air guide cover will drive the oblique blades, the first rotating shaft, the first bevel gear, the second bevel gear, the second rotating shaft, the active pulley, the driven pulley, the connecting shaft and the protrusion to rotate, so that the rack moves linearly and drives multiple gears, fixed shafts and exhaust blades meshing therewith to rotate at the same time. During the rotation of the exhaust blades, the air outlet angle of the air outlet will be adjusted, and the air sprayed onto the surface of the heat exchanger will be adjusted, so that the airflow at the air outlet can be evenly sprayed onto the surface of the heat exchanger from different angles and heat exchange with it, thereby improving the heat exchange effect between the airflow and the heat exchanger, thereby improving the use effect of the structure.

[0018] 2. This solution sets up a buffer noise reduction component. The filtered gas will enter the inside of the bent pipe through the wind guide cover. The bent pipe can prolong the movement time of the airflow to achieve a deceleration effect. At the same time, the baffle plate will further decelerate the rising gas inside the bent pipe, and cooperate with its built-in sound-absorbing layer to decelerate and reduce the noise of the gas entering the heat exchanger, thereby improving the noise reduction effect of the structure during use and ensuring the comfort of the structure during use.

[0019] 3. The cleaning and protection component set up in this scheme enables the driving motor to drive the lead screw to rotate when the structure is used, so that the threaded sleeve drives the sliding plate and the cleaning brush to move downward, and the surface of the filter is automatically cleaned by the cleaning brush to prevent the filter from being blocked due to long-term use, which not only prevents the filtering effect from being affected, but also prevents the air flow effect of the structure from being affected, thereby ensuring the portability and applicability of the structure. The sliding plate will stretch the first protective layer during the downward movement, and the air inlet will be protected by the first protective layer to prevent external moisture and dust impurities from entering the structure when the structure is not in use, thereby improving the protection effect of the structure during use. As the sliding plate moves, the sliding plate will transport the internal gas of the main airbag to the auxiliary airbag, causing it to expand and drive the vertical plate to move to stretch the second protective layer, and the exhaust port is shielded and protected by the second protective layer, thereby improving the overall protection effect of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure for embodying the present invention;

[0021] Figure 2 For use in embodying the present invention Figure 1 A local enlarged structural schematic diagram;

[0022] Figure 3 For use in embodying the present invention Figure 1 A schematic diagram of the local enlarged structure at B;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the lead screw in the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the auxiliary airbag in the present invention;

[0025] Figure 6 It is a schematic diagram of the internal structure of the housing in a side view for embodying the present invention;

[0026] Figure 7 For use in embodying the present invention Figure 6 A schematic diagram of the local enlarged structure at C;

[0027] Figure 8 It is a schematic diagram of a partial three-dimensional structure for embodying the dispersed components in the present invention.

[0028] In the figure: 1, shell; 2, fixed seat; 3, filter; 4, exhaust port; 5, cleaning protection component; 501, drive motor; 502, lead screw; 503, sliding plate; 504, first protection layer; 505, main airbag; 506, air pipe; 507, auxiliary airbag; 508, vertical plate; 509, first spring; 510, second protection layer; 6, partition; 7, wind guide cover; 8, buffer noise reduction component; 801, elbow; 802, baffle; 9, dispersion group Parts; 901, oblique blades; 902, first rotating shaft; 903, first bevel gear; 904, second bevel gear; 905, second rotating shaft; 906, driving pulley; 907, driven pulley; 908, connecting shaft; 909, bump; 910, slide plate; 911, rack; 912, gear; 913, fixed shaft; 914, exhaust blade; 915, second spring; 10, connecting seat; 11, heat exchanger; 12, fan; 13, first cavity. DETAILED DESCRIPTION

[0029] The invention will be further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely illustrative and are not intended to limit the scope of protection of the present invention.

[0030] Embodiment 1: An ultra-thin fan coil structure with good noise reduction effect, such as Figure 1-Figure 8 As shown, it includes a shell 1, a fixing seat 2 is fixedly connected to one side of the bottom of the shell 1, a cleaning protection component 5 is arranged inside the fixing seat 2, a partition 6 is fixedly connected to the bottom side of the shell 1, an air guide cover 7 is fixedly connected to the top of the partition 6, a buffering noise reduction component 8 is arranged on the top of the air guide cover 7, the buffering noise reduction component 8 includes a bent pipe 801, a connecting seat 10 is fixedly connected to the top of the bent pipe 801, and an air outlet, a second cavity and a dispersion component 9 are arranged inside the connecting seat 10.

[0031] The dispersion component 9 includes a connecting shaft 908, which is rotatably connected to the inside of the connecting seat 10, and one end of the connecting shaft 908 extends to the inside of the second cavity and is fixedly connected to a protrusion 909, a slide plate 910 is provided on one side of the protrusion 909, and a rack 911 is fixedly connected to the other side of the slide plate 910, and a plurality of gears 912 are meshed and connected to the other side of the rack 911, and a fixed shaft 913 is fixedly connected to the inside of the gear 912, and the other end of the fixed shaft 913 extends to the inside of the air outlet and is fixedly connected to an exhaust blade 914, and the fixed shaft 913 is rotatably connected to the inside of the connecting seat 10, and a driven pulley 907 is fixedly connected to the connecting shaft 908, and a conveyor belt is wound around the driven pulley 907, and a conveyor belt is provided on the other side of the conveyor belt. There is a driving pulley 906, and a second rotating shaft 905 is fixedly connected inside the driving pulley 906. The second rotating shaft 905 is rotatably connected to the inside of the shell 1. The other end of the second rotating shaft 905 is fixedly connected to the second bevel gear 904. One side of the second bevel gear 904 is meshed with the first bevel gear 903. The first rotating shaft 902 is fixedly connected inside the first bevel gear 903. One end of the first rotating shaft 902 extends to the inside of the curved pipe 801 and is fixedly connected to the oblique blade 901. The first rotating shaft 902 is rotatably connected to the curved pipe 801 and the inside of the shell 1 through a bearing. Second springs 915 are fixedly connected on both sides of the rack 911. The second springs 915 are fixedly connected to the slide plate 910 and the inner wall of the connecting seat 10 on both sides.

[0032] In actual application, the structure is installed in a suitable place, and the fan 12 is started according to actual needs. The fan 12 draws external air into the shell 1 through the air inlet. The filter 3 intercepts and filters the air entering the shell 1 to prevent external dust from entering the shell 1 and adhering to the surface of the heat exchanger 11, thereby affecting the heat dissipation effect of the heat exchanger 11, thereby preventing the performance of the structure from being affected. The airflow entering the air guide cover 7 will drive the oblique blades 901 to rotate, and the linkage effect between the oblique blades 901 and the first rotating shaft 902 is used to transmit power to the first rotating shaft 902, so that the first rotating shaft 902 drives the first bevel gear 903 to rotate, and then the linkage effect between the first bevel gear 903 and the second bevel gear 904 is used to transmit power to the second bevel gear 904, so that the second bevel gear 904 drives the second rotating shaft 905 and the active pulley 906 The driving pulley 906 transmits the power to the driven pulley 907 through the transmission belt, so that the driven pulley 907 drives the connecting shaft 908 and the protrusion 909 to rotate. As the protrusion 909 rotates, the slide plate 910, the rack 911 and the second spring 915 are squeezed, so that the rack 911 moves linearly and drives the multiple gears 912 meshing therewith to rotate at the same time. The linkage effect between the gear 912 and the fixed shaft 913 is utilized to transmit the power to the fixed shaft 913, so that the fixed shaft 913 drives the exhaust blade 914 to rotate. The exhaust blade 914 adjusts the outlet angle of the air outlet during the rotation process to adjust the air sprayed onto the surface of the heat exchanger 11, so that the airflow at the air outlet is evenly sprayed onto the surface of the heat exchanger 11 from different angles to exchange heat with it, thereby improving the heat exchange effect between the airflow and the heat exchanger 11, thereby improving the use effect of the structure.

[0033] Embodiment 2: An ultra-thin fan coil structure with good noise reduction effect, which is different from Embodiment 1 in that: Figure 1-Figure 2 and Figure 6-Figure 7 As shown, a sound-absorbing layer is arranged inside the curved pipe 801, the curved pipe 801 is arranged in an S shape, and a plurality of baffles 802 are linearly distributed on the inner circumference of the curved pipe 801, an air inlet is opened at the junction of the fixed seat 2 and the shell 1, a fan 12 is arranged on one side of the air inlet, and the fan 12 is located on the bottom side of the shell 1, a filter 3 is arranged inside the air inlet, the filter 3 is fixedly connected to the fixed seat 2, a third cavity is arranged on one side of the filter 3, and the third cavity is located inside the fixed seat 2, an exhaust port 4 is arranged on the top side of the shell 1, a first cavity 13 is arranged above the exhaust port 4, and the first cavity 13 is located inside the shell 1, a heat exchanger 11 is arranged below the exhaust port 4, and the heat exchanger 11 is arranged above the connecting seat 10.

[0034] In actual applications, the filtered gas will enter the curved pipe 801 through the wind guide hood 7. The curved pipe 801 can extend the movement time of the airflow to achieve a deceleration effect. At the same time, the baffle 802 further decelerates the gas rising inside the curved pipe 801, and cooperates with its built-in sound-absorbing layer to decelerate and reduce the noise of the gas entering the heat exchanger 11, thereby improving the noise reduction effect of the structure during use and ensuring the comfort of the structure during use.

[0035] Embodiment 3: An ultra-thin fan coil structure with good noise reduction effect, which is different from Embodiment 1 in that: Figure 1-Figure 5 As shown, the cleaning and protection component 5 includes a driving motor 501, which is arranged inside the third cavity, and the top of the driving motor 501 is fixedly connected to the inner wall of the fixed seat 2, one end of the output shaft of the driving motor 501 is fixedly connected to a screw 502, a threaded sleeve is threadedly connected to the screw 502, and a sliding plate 503 is fixedly connected to the outer peripheral side of the threaded sleeve, and the sliding plate 503 is slidably connected to the inside of the third cavity, a first protective layer 504 is fixedly connected at the center of the top of the sliding plate 503, and the other side of the first protective layer 504 is fixedly connected to the inside of the fixed seat 2, a cleaning brush is fixedly connected to one side of the bottom of the sliding plate 503, and the cleaning brush is arranged on the side opposite to the filter screen 3, and a main air bag 505 is arranged below the sliding plate 503, and the bottom of the main air bag 505 is connected to The inner wall of the fixing seat 2 is fixedly connected, one side of the main airbag 505 is connected to an air supply pipe 506, and the other side of the air supply pipe 506 is connected to an auxiliary airbag 507, the auxiliary airbag 507 is arranged inside the first cavity 13, and one side of the auxiliary airbag 507 is fixedly connected to the inner wall of the shell 1, the other side of the auxiliary airbag 507 is fixedly connected to a vertical plate 508, the vertical plate 508 is slidably connected inside the first cavity 13, the side of the vertical plate 508 away from the auxiliary airbag 507 is fixedly connected to a first spring 509, the other side of the first spring 509 is fixedly connected to the inner wall of the shell 1, a second protective layer 510 is arranged on one side of the auxiliary airbag 507, and the other side of the second protective layer 510 is fixedly connected to the inner wall of the shell 1, and the second protective layer 510 and the first protective layer 504 are both configured to be retractable.

[0036] In actual application, when the structure is used up, the drive motor 501 is started according to actual needs, and the lead screw 502 is driven to rotate by the drive motor 501. The linkage effect between the lead screw 502 and the threaded sleeve is used to transmit power to the threaded sleeve, so that the threaded sleeve drives the sliding plate 503 and the cleaning brush to move downward, and the surface of the filter screen 3 is automatically cleaned by the cleaning brush to prevent the filter screen 3 from being blocked after long-term use, which not only prevents the filtering effect from being affected, but also prevents the air flow effect of the structure from being affected, thereby ensuring the portability and applicability of the structure. The sliding plate 503 will clean the first protective layer 504 during the downward movement. The first protective layer 504 is stretched to protect the air inlet so as to prevent external moisture and dust impurities from entering the interior of the structure when the structure is not in use, thereby improving the protective effect of the structure during use. As the sliding plate 503 moves, the sliding plate 503 squeezes the main airbag 505, and transmits the internal gas of the main airbag 505 to the auxiliary airbag 507 through the air pipe 506, causing it to expand and drive the vertical plate 508 to move. During the movement of the vertical plate 508, the second protective layer 510 is stretched, and the exhaust port 4 is shielded and protected by the second protective layer 510, thereby improving the overall protection effect of the shell 1.

[0037] Working principle: install the structure in a suitable place, start the fan 12 according to actual needs, and the fan 12 draws external air into the shell 1 through the air inlet. The filter 3 will intercept and filter the air entering the shell 1, and the filtered gas will enter the curved pipe 801 through the wind guide cover 7. The movement time of the airflow can be extended through the curved pipe 801 to achieve a deceleration effect. At the same time, the rising gas in the curved pipe 801 is further decelerated through the baffle 802, and cooperated with its built-in sound absorbing layer to decelerate and reduce the noise of the gas entering the heat exchanger 11. The airflow that has just entered the wind guide cover 7 will drive the oblique blades 901 to rotate, and the linkage effect between the oblique blades 901 and the first rotating shaft 902 is used to transmit power to the first rotating shaft 902, so that the first rotating shaft 902 drives the first bevel gear 903 to rotate, and then the first bevel gear 903 and the second bevel gear are used. The linkage effect between the gears 904 transmits power to the second bevel gear 904, so that the second bevel gear 904 drives the second rotating shaft 905 and the driving pulley 906 to rotate, and the driving pulley 906 transmits power to the driven pulley 907 through the transmission belt, so that the driven pulley 907 drives the connecting shaft 908 and the protrusion 909 to rotate. As the protrusion 909 rotates, the slide plate 910, the rack 911 and the second spring 915 are squeezed, so that the rack 911 moves linearly and drives the multiple gears 912 meshing therewith to rotate at the same time. The linkage effect between the gear 912 and the fixed shaft 913 is used to transmit power to the fixed shaft 913, so that the fixed shaft 913 drives the exhaust blade 914 to rotate, and the exhaust blade 914 adjusts the outlet angle of the air outlet during the rotation process, so that the airflow at the outlet is evenly sprayed onto the surface of the heat exchanger 11 from different angles and exchanges heat with it;

[0038] When the structure is used up, the drive motor 501 is started according to actual needs, and the drive motor 501 drives the lead screw 502 to rotate. The linkage effect between the lead screw 502 and the threaded sleeve is used to transmit power to the threaded sleeve, so that the threaded sleeve drives the sliding plate 503 and the cleaning brush to move downward, and the surface of the filter 3 is automatically cleaned by the cleaning brush. The sliding plate 503 stretches the first protective layer 504 during the downward movement, and the air inlet is protected by the first protective layer 504. As the sliding plate 503 moves, the sliding plate 503 squeezes the main airbag 505, and the internal gas of the main airbag 505 is transported to the inside of the auxiliary airbag 507 through the air pipe 506, causing it to expand and drive the vertical plate 508 to move. During the movement of the vertical plate 508, the second protective layer 510 is stretched, and the exhaust port 4 is shielded and protected by the second protective layer 510, thereby ensuring the overall protection effect of the structure.

[0039] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An ultra-thin fan coil structure with good noise reduction effect, characterized in that: The invention comprises a shell (1), wherein a fixing seat (2) is fixedly connected to one side of the bottom of the shell (1), a cleaning protection component (5) is arranged inside the fixing seat (2), a partition (6) is fixedly connected to the bottom side of the shell (1), a wind guide cover (7) is fixedly connected to the top of the partition (6), a buffer noise reduction component (8) is arranged on the top of the wind guide cover (7), the buffer noise reduction component (8) comprises a curved pipe (801), a connecting seat (10) is fixedly connected to the top of the curved pipe (801), and an air outlet, a second cavity and a dispersion component (9) are arranged inside the connecting seat (10); The dispersion component (9) comprises a connecting shaft (908), wherein the connecting shaft (908) is rotatably connected to the inside of the connecting seat (10), and one end of the connecting shaft (908) extends into the inside of the second cavity and is fixedly connected to a protrusion (909), a slide plate (910) is provided on one side of the protrusion (909), and a rack (911) is fixedly connected to the other side of the slide plate (910), and a plurality of gears (912) are meshedly connected to the other side of the rack (911), and a fixed shaft (913) is fixedly connected to the inside of the gear (912), and the other end of the fixed shaft (913) extends into the inside of the air outlet and is fixedly connected to an exhaust blade (914), and the fixed shaft (913) is rotatably connected to the inside of the connecting seat (10), and a driven pulley (914) is fixedly connected to the connecting shaft (908). 907), a conveyor belt is wound around the driven pulley (907), a driving pulley (906) is provided on the other side of the conveyor belt, a second rotating shaft (905) is fixedly connected inside the driving pulley (906), the second rotating shaft (905) is rotatably connected inside the housing (1), the other end of the second rotating shaft (905) is fixedly connected to a second bevel gear (904), one side of the second bevel gear (904) is meshingly connected to a first bevel gear (903), the first bevel gear (903) is fixedly connected inside the first rotating shaft (902), one end of the first rotating shaft (902) extends to the inside of the curved pipe (801) and is fixedly connected to an oblique blade (901), the first rotating shaft (902) is rotatably connected to the curved pipe (801) and the inside of the housing (1) through a bearing; The rack (911) is fixedly connected to a second spring (915) on both sides, and the second spring (915) is fixedly connected to the slide plate (910) and the inner wall of the connecting seat (10) on both sides respectively; A sound-absorbing layer is arranged inside the curved pipe (801), the curved pipe (801) is arranged in an S-shape, and a plurality of baffles (802) are linearly distributed on the inner circumference of the curved pipe (801); An air inlet is provided at the junction of the fixing seat (2) and the shell (1), a fan (12) is provided on one side of the air inlet, the fan (12) is located at the bottom side of the shell (1), a filter (3) is provided inside the air inlet, the filter (3) is fixedly connected to the inside of the fixing seat (2), a third cavity is provided on one side of the filter (3), and the third cavity is located inside the fixing seat (2); An air outlet (4) is arranged on the top side of the shell (1), a first cavity (13) is arranged above the air outlet (4), the first cavity (13) is located inside the shell (1), a heat exchanger (11) is arranged below the air outlet (4), and the heat exchanger (11) is arranged above the connection seat (10); The cleaning and protection component (5) comprises a driving motor (501), the driving motor (501) being arranged inside the third cavity, and the top of the driving motor (501) being fixedly connected to the inner wall of the fixing seat (2), a lead screw (502) being fixedly connected to one end of the output shaft of the driving motor (501), a threaded sleeve being threadedly connected to the lead screw (502), and a sliding plate (503) being fixedly connected to the outer peripheral side of the threaded sleeve; The sliding plate (503) is slidably connected inside the third cavity, a first protective layer (504) is fixedly connected at the center of the top of the sliding plate (503), the other side of the first protective layer (504) is fixedly connected to the inside of the fixed seat (2), and a cleaning brush is fixedly connected to one side of the bottom of the sliding plate (503), and the cleaning brush is arranged on the side opposite to the filter screen (3); A main air bag (505) is provided below the sliding plate (503); the bottom of the main air bag (505) is fixedly connected to the inner wall of the fixing seat (2); one side of the main air bag (505) is connected to an air supply pipe (506); the other side of the air supply pipe (506) is connected to an auxiliary air bag (507); The auxiliary airbag (507) is arranged inside the first cavity (13), and one side of the auxiliary airbag (507) is fixedly connected to the inner wall of the shell (1), and the other side of the auxiliary airbag (507) is fixedly connected to a vertical plate (508), and the vertical plate (508) is slidably connected inside the first cavity (13); A first spring (509) is fixedly connected to one side of the vertical plate (508) away from the auxiliary airbag (507); the other side of the first spring (509) is fixedly connected to the inner wall of the shell (1); a second protective layer (510) is provided on one side of the auxiliary airbag (507); the other side of the second protective layer (510) is fixedly connected to the inner wall of the shell (1); the second protective layer (510) and the first protective layer (504) are both configured to be retractable.

Images