Automatic cleaning device for cleaning air conditioning pipes

Abstract

The present invention belongs to the field of disinfection technology, and discloses an automatic cleaning device for cleaning air-conditioning ducts, including a dust cleaning and dust shoveling module, a dust removal and disinfection module and a crawler, and the dust cleaning and dust shoveling module is installed on the dust removal and disinfection module. The design of the double dust removal air duct extends the dust removal distance, improves the dust removal efficiency, and solves the disadvantages of the traditional cyclone dust collector being relatively tall and unable to be applied to miniaturized scenes. The spraying of disinfectant not only kills microorganisms in the dust-containing air, but also utilizes the agglomeration effect of particles to condense smaller particles into larger particles, thereby improving the dust removal efficiency of the cyclone dust removal device. The design of the double dust removal air duct changes the direction of the dust-containing air flow twice, utilizes the characteristics of the condensed larger particles, and fully utilizes the principle of gravity to separate dust. Compared with the existing duct dust collectors, most of them only include the brush head to stimulate dust emission function, and the dust is easy to fall back into the duct again, and rarely include both the disinfection function and the dust removal function.

Description

Technical Field

[0001] The invention belongs to the technical field of disinfection, and in particular relates to an automatic cleaning device for an air duct of an air conditioning system. Background Art

[0002] In recent years, investigations have been conducted across the country on the microbial contamination of central air conditioning systems. According to reports such as "Investigation on the Current Status of Central Air Conditioning and Ventilation System Pollution in Five-Star Hotels in Beijing", "Investigation on the Sanitary Condition of Ventilation Pipes in Central Air Conditioning Systems in Some Public Places in Jinan", and "Investigation on the Contamination Status of Central Air Conditioning and Ventilation System Pipes in Public Places in Dalian", serious microbial contamination problems exist in cities including Beijing, Jinan, Shenyang, and Dalian. Most central air conditioners in public places have not been cleaned or disinfected for a long time, or the cleaning and disinfection is not thorough, resulting in excessive dust accumulation inside the air conditioning system and serious microbial contamination.

[0003] At present, most air conditioning systems in public places generally use primary filters, which mainly filter about 40% of large particles of 10 to 100 μm in the air, and more than half of the particles will enter the centralized air conditioning system. Under the influence of wind pressure, temperature, humidity and other conditions in the air conditioner, some of them will collide with each other to form larger dust groups and adhere to the inner surface of the air duct to form dust accumulation. Among the fine particles in the air conditioning system, in addition to inorganic particles, a large number of microbial aerosols containing bacteria, viruses, fungi, etc. are suspended. Exposure to microbial aerosols poses a threat to human health that cannot be ignored, and the temperature and humidity in the centralized air conditioning ventilation system are very suitable for the growth and reproduction of microorganisms. On the basis of the rich nutrition provided by the dust accumulation, the air conditioning duct has become a breeding ground for bacteria. When the air conditioning system is running, the internal pollutants can quickly spread to the space they reach, causing indoor air pollution.

[0004] At present, the pipe cleaning robots on the market only have a rotating brush head to simply sweep the dust accumulated in the pipe, but lack the function of enriching and removing the excited dust. Much of the secondary dust excited still does not leave the air duct through the air flow, but reattaches to the air duct through deposition, and cannot completely disinfect the microorganisms inside the air duct. Summary of the invention

[0005] The object of the present invention is to provide an automatic cleaning device for cleaning air-conditioning ducts, so as to solve the problem of microbial growth caused by dust accumulation in the air-conditioning ducts.

[0006] The technical solution of the present invention:

[0007] An automatic cleaning device for cleaning air conditioning ducts, comprising a dust cleaning and shoveling module, a dust removal and disinfecting module and a crawler 216, wherein the dust cleaning and shoveling module is installed on the dust removal and disinfecting module;

[0008] The dust cleaning and shoveling module includes a brush 101, a retractable rotating mechanical arm 102 and a mechanical arm motor 103 which are connected in sequence; the mechanical arm motor 103 drives the brush 101 to rotate through the retractable rotating mechanical arm 102 to remove dust; the dust cleaning and shoveling module re-excites the dust accumulated in the dust removal and disinfecting module to suspend the wall dust in the air, and the retractable rotating mechanical arm 102 adapts to different air duct diameters by retracting;

[0009] The dust removal and disinfection module includes an air inlet 201, an air inlet duct 202, an outer wall 203, an outer dust accumulation groove 204, a negative pressure chamber 205, an outer spiral fan blade 206, a power wall 207, an inner dust accumulation groove 208, an inner spiral fan blade 209, a rotating power shaft 210, a rotating power motor 211, an exhaust duct 212, an annular atomizing nozzle 213, a spray water tank 214, a spray water pump connecting pipe 215, a motor battery 217, an outer dust removal channel 218, an inner dust removal channel 219, a total dust accumulation groove 220 and a negative pressure fan 221;

[0010] The interior of the dust removal and disinfection module has an additional dust removal channel compared to the ordinary cyclone dust collector; the interior of the dust removal and disinfection module is divided into an outer dust removal channel 218 and an inner dust removal channel 219 by the integrated power wall 207 and the inner dust accumulation groove 208. The area between the outer wall 203 and the power wall 207 is the outer dust removal channel 218, and the area between the power wall 207 and the negative pressure chamber 205 is the inner dust removal channel 219; the shape of the integrated power wall 207 and the inner dust accumulation groove 208 is the same as that of the outer wall 203, and the inner dust accumulation groove 208 is the same as that of the outer wall 203. 08 is a groove with an inclined wall, and its bottom is an inner dust leakage plate with a through hole. The outer wall 203 is opposite to the inner dust leakage plate. The area between the inner dust accumulation groove 208 and the outer wall 203 is the outer dust accumulation groove 204; the total dust accumulation groove 220 is fixed outside the outer wall 203, and it is surrounded by the outer dust leakage plate; the spray water groove 214 is connected to the spray water pump connecting pipe 215 to store the disinfectant; the spray water groove 214 is installed with an annular atomizing nozzle 213, and the annular atomizing nozzle 213 is located at the outer dust removal channel 218 The upper area; the annular atomizing nozzle 213 sprays and kills the dust-containing air in the outer dust removal channel 218 downward; the dust-containing gas condenses into larger particles under the condensation of droplets and particles. Under the dual effects of centrifugal force and gravity, the larger particles break away from the dust-containing airflow and collide with the wall surface, and successively pass through the inner dust leakage plate and the outer dust leakage plate and gather in the total dust accumulation groove 220; the rotating transmission shaft 210 is fixed at the bottom of the inner dust accumulation groove 208 and does not contact the outer wall 203 and the total dust accumulation groove 220; the power wall 2 07 are respectively fixed with an outer spiral blade 206 and an inner spiral blade 209 on both sides, the spiral direction of the spiral blade 206 is gradually increased counterclockwise along the outer wall 203, and the spiral direction of the inner spiral blade 209 is gradually decreased counterclockwise, and the rotating power shaft 210 drives the power wall 207 to rotate counterclockwise; the rotating power motor 211 drives the rotating power shaft 210 to rotate, thereby driving the power wall 207 to rotate, thereby driving the outer spiral blade 206 and the inner spiral blade 209 to rotate, thereby driving the inner and outer dust-laden airflows to rotate;

[0011] One side of the air inlet 201 is connected to the outside, and the other side is connected to the external dust storage tank 204 through the air inlet duct 202; the exhaust duct 212 is externally connected to the negative pressure fan 221, forming a negative pressure chamber 205 inside the dust removal and disinfection module;

[0012] The dust-laden gas in the outer dust removal passage 218 gradually increases as the spiral blades 206 rotate counterclockwise and enter the inner dust removal passage 219; the dust-laden airflow in the inner dust removal passage 219 gradually decreases as the inner spiral blades 209 rotate counterclockwise and enters the negative pressure chamber 205, and is discharged from the system through the outer spiral blades 212;

[0013] The crawler 216 is powered by a motor battery, has a built-in forward motor, and an automatic cleaning device is placed between the two wings of the crawler. The crawler 216 drives the automatic cleaning device to remove dust and disinfect.

[0014] Beneficial effects of the present invention:

[0015] (1) The design of the dual dust removal air ducts extends the dust removal distance, improves the dust removal efficiency, and solves the problem that traditional cyclone dust collectors are relatively tall and cannot be used in miniaturized scenarios.

[0016] (2) The spraying of disinfectant not only kills microorganisms in the dusty air, but also utilizes the agglomeration effect of particles to agglomerate smaller particles into larger particles, thereby improving the dust removal efficiency of the cyclone dust removal device.

[0017] (3) The design of the double dust removal duct changes the direction of the dust-laden airflow twice, utilizing the characteristics of the larger particles that are condensed and making full use of the principle of gravity to separate the dust.

[0018] (4) Compared with the existing duct dust collectors, most of them only include the brush head to stimulate dust, and the dust is easy to fall back into the duct again. Few of them include both the disinfection function and the dust removal function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic front view of the structure of an automatic cleaning device for cleaning air-conditioning ducts.

[0020] Figure 2 The figure is a schematic side view of the structure of an automatic cleaning device for cleaning air conditioning ducts.

[0021] Figure 3 The present invention is a schematic diagram showing the principle of a dust removal and disinfection module of an automatic cleaning device for cleaning air-conditioning ducts.

[0022] Figure 4 The structure of an automatic cleaning device for cleaning air conditioning pipes is shown in a simplified internal section. Figure 1 .

[0023] Figure 5 The structure of an automatic cleaning device for cleaning air conditioning pipes is shown in a simplified internal section. Figure 2 .

[0024] Figure 6 The present invention is a simplified structural diagram of an annular atomizing nozzle of an automatic cleaning device for cleaning air conditioning pipes.

[0025] In the figure: 101 brush, 102 retractable rotating mechanical arm, 103 mechanical arm motor, 201 air inlet, 202 air inlet duct, 203 outer wall, 204 outer dust accumulation trough, 205 negative pressure chamber, 206 outer spiral fan blade, 207 power wall, 208 inner dust accumulation trough, 209 inner spiral fan blade, 210 rotating power shaft, 211 rotating power motor, 212 exhaust duct, 213 annular atomizing nozzle, 214 spray water trough, 215 spray water pump connecting pipe, 216 crawler, 217 motor battery, 218 outer dust removal channel, 219 inner dust removal channel, 220 total dust accumulation trough, 221 negative pressure fan. DETAILED DESCRIPTION

[0026] A specific implementation of the present invention is further described below in conjunction with the accompanying drawings and technical solutions.

[0027] like Figure 1 , Figure 2 As shown, the automatic cleaning device in the present invention includes a dust cleaning and dust shoveling module and a dust removal and disinfecting module. The dust cleaning and dust shoveling module includes a brush 101, a retractable rotating mechanical arm 102, and a mechanical arm motor 103. The dust removal and disinfecting module includes an air inlet 201, an air inlet duct 202, an outer wall 203, an outer dust accumulation groove 204, a negative air pressure chamber 205, an outer spiral fan blade 206, a power wall 207, an inner dust accumulation groove 208, an inner spiral fan blade 209, a rotating power shaft 210, a rotating power motor 211, an exhaust duct 212, an annular atomizing nozzle 213, a spray water tank 214, a spray water pump connecting pipe 215, a motor battery 217, an outer dust removal channel 218, an inner dust removal channel 219, a total dust accumulation groove 220 and a negative pressure fan 221.

[0028] The brush 101 is connected to the retractable rotating mechanical arm 102, and the rotating motor 103 rotates to drive the brush 101 to rotate and remove dust. The retractable rotating mechanical arm 102 can adapt to air ducts of different diameters. The mechanical arm motor 103 is located above the spray water tank 214. The retractable rotating mechanical arm 102 is connected to the mechanical arm motor 103, and the retractable rotating mechanical arm 102 drives the brush head to rotate to excite the dust into the airflow for a second time. The crawler 216 drives the unit forward and backward. The total dust accumulation tank 220 is a cleanable dust accumulation tank, and the intermediate dust is manually cleaned after dust removal for a period of time. The battery 217 supplies power to the rotating power motor 211 and the mechanical arm 103 motor. The spray water pump connecting pipe 215 is externally connected to the infusion pump infusion box to pump the disinfectant from the outside of the air conditioning system into the spray water tank 214. The air inlet 201 sucks the dust-containing airflow into the dust removal device, and after dust removal and disinfection, it is discharged from the exhaust air duct 212 outside the air conditioning system. The exhaust air duct 212 is connected to a negative pressure fan 221 outside the air conditioning system to discharge the sterilized gas outside the air conditioning system.

[0029] like Figure 3 , Figure 4 , Figure 5 As shown, there are air inlet 201, air inlet duct 202, outer wall 203, outer dust accumulation trough 204, negative air pressure chamber 205, outer spiral fan blades 206, power wall 207, inner dust accumulation trough 208, inner spiral fan blades 209, rotating power shaft 210, rotating power motor 211, exhaust duct 212, annular atomizing nozzle 213, spray water trough 214, spray water pump connecting pipe 215, motor battery 217, outer dust removal channel 218, inner dust removal channel 219, total dust accumulation trough 220 and negative pressure fan 221.

[0030] The negative pressure fan 221 is placed outside the air conditioning system, connected to the negative air pressure 205 through the exhaust duct 212, and does not enter the air duct with the disinfection and dust removal device to provide negative pressure for the negative pressure chamber 205. The inside of the dust removal and disinfection module is divided into an outer dust removal channel 218 and an inner dust removal channel 219 by the integrated power wall 207 and the inner dust accumulation groove 208. The area between the outer wall 203 and the power wall 207 is the outer dust removal channel 218, and the area between the power wall 207 and the negative pressure chamber 205 is the inner dust removal channel 219. The shape of the integrated power wall 207 and the inner dust accumulation groove 208 is the same as that of the outer wall 203. The inner dust accumulation groove 208 is a groove with an inclined wall surface, and its bottom is an inner dust leakage plate with a through hole. The outer dust leakage plate is located opposite to the inner dust leakage plate on the outer wall 203, and the area between the inner dust accumulation groove 208 and the outer wall 203 is the outer dust accumulation groove 204. The total dust accumulation groove 220 is fixed outside the outer wall 203 and is surrounded by the outer dust leakage plate. The dust separated by the inner dust removal channel 219 enters the total dust accumulation groove 220 through the inner dust leakage plate and the outer dust leakage plate. The dust separated by the outer dust removal channel 218 enters the total dust accumulation tank 220 through the outer dust leakage plate. A dust cover is arranged outside the rotary power motor 211 to prevent the influence of dust on the power motor. The rotary power motor 211 drives the rotary power shaft 210 to rotate, and then drives the rotary power wall 207 to rotate, and then drives the outer spiral blades 206 and the inner spiral blades 209 to rotate, and then drives the inner and outer dust-containing airflows to rotate; the spiral direction of the outer spiral blades 206 is gradually increased in the counterclockwise direction along the wall surface 203, and the spiral direction of the inner spiral blades 209 is gradually decreased in the counterclockwise direction, and the rotary power shaft 210 drives the power wall 207 to rotate counterclockwise.

[0031] The spray water tank 214 stores disinfectant through the spray water pump connecting pipe 215. The annular atomizing nozzle 213 separates the spray water tank 214 from the outer dust removal channel 218. The upper side of the annular nozzle 218 is the spray water tank 214, and the lower side is the outer dust removal channel 218. The annular nozzle 213 sprays and disinfects the dust-containing air in the outer dust-containing channel 218 downward; the spray water pump connecting pipe 215 is connected to the spray water tank 214, and the spray water tank 214 is connected to the external water pump for pressurization.

[0032] The dust removal module and the spray module are combined to remove dust and sterilize the dust-laden airflow. The exhaust duct 212 is connected to the negative pressure fan 221, so that negative pressure is generated in the outer dust removal channel 218, the inner dust removal channel 219, and the negative pressure chamber 205. At the same time, the power wall 207 rotates counterclockwise, driving the outer spiral blades 206 and the inner spiral blades 209 to rotate counterclockwise, so that a comprehensive negative pressure is generated at the air inlet 201. The dust-laden airflow is guided to enter from the air inlet 201 and enter the outer dust removal channel. At this time, the disinfection annular atomizing nozzle 213 begins to spray disinfectant in the outer disinfection channel, and the droplets condense with the particles as condensation nuclei to form droplets with heavier weight. At the same time, the rotation of the outer spiral blades generates centrifugal force, and the heavier droplets break away from the airflow and hit the outer wall surface 203 under the dual action of centrifugal force and gravity. The dust separated by the outer dust removal channel 218 slides down from the outer dust accumulation groove 204, passes through the outer dust leakage plate and accumulates in the total dust accumulation groove 220. The dust separated by the inner dust removal channel 219 slides down from the inner dust accumulation groove 208, passes through the inner dust leakage plate and the outer dust leakage plate and accumulates in the total dust accumulation groove 220. The spiral direction of the outer spiral blade 206 gradually rises counterclockwise along the wall surface, guiding the dust-containing airflow to enter the inner dust removal channel 219 from the upper side for secondary dust removal. The spiral direction of the inner spiral blade 209 in the inner dust removal channel 219 gradually decreases counterclockwise, guiding the dust-containing airflow to enter the negative pressure chamber 205 from the lower side and be discharged from the exhaust duct 212.

[0033] like Figure 6 As shown, the annular nozzle 213 is placed between the spray tank 214 and the external dust removal duct 218, and is distributed in a ring shape above the external dust removal duct 218, and sprays and disinfects the external dust removal duct in a mist-like manner. Only the outer dust removal channel is sprayed and disinfected, reducing the amount of liquid entering the inner channel 219 and the negative pressure chamber 205. The crawler 216 is powered by a motor battery 217, and has a built-in forward motor. The automatic cleaning device is placed between the two wings of the crawler 216, and the crawler 216 drives the automatic cleaning device to remove dust and disinfect.

Claims

1. An automatic cleaning device for cleaning air conditioning ducts, characterized in that: The automatic cleaning device comprises a dust cleaning and shoveling module, a dust removal and disinfecting module and a crawler belt (216), wherein the dust cleaning and shoveling module is installed on the dust removal and disinfecting module; The dust cleaning and shoveling module comprises a brush (101), a retractable rotating mechanical arm (102) and a mechanical arm motor (103) which are connected in sequence; the mechanical arm motor (103) drives the brush (101) to rotate through the retractable rotating mechanical arm (102) to remove dust; the dust cleaning and shoveling module re-excites the dust accumulated in the dust removal and disinfecting module so that the wall dust is suspended in the air, and the retractable rotating mechanical arm (102) adapts to different air duct diameters by retracting; The dust removal and disinfection module comprises an air inlet (201), an air inlet duct (202), an outer wall (203), an outer dust accumulation trough (204), a negative pressure chamber (205), an outer spiral fan blade (206), a power wall (207), an inner dust accumulation trough (208), an inner spiral fan blade (209), a rotating power shaft (210), a rotating power motor (211), an exhaust duct (212), an annular atomizing nozzle (213), a spray water trough (214), a spray water pump connecting pipe (215), a motor battery (217), an outer dust removal channel (218), an inner dust removal channel (219), a total dust accumulation trough (220) and a negative pressure fan (221); The interior of the dust removal and disinfection module has an additional dust removal channel compared to an ordinary cyclone dust collector; the interior of the dust removal and disinfection module is divided into an outer dust removal channel (218) and an inner dust removal channel (219) by an integrally structured power wall (207) and an inner dust accumulation groove (208); the area between the outer wall (203) and the power wall (207) is the outer dust removal channel (218), and the area between the power wall (207) and the negative pressure chamber (205) is the inner dust removal channel (219); the shape of the integrally structured power wall (207) and the inner dust accumulation groove (208) is the same as that of the outer wall (203), and the inner dust accumulation groove (208) is the inner dust removal channel (219). The ash trough (208) is a trough with an inclined wall surface, and its bottom is an inner dust leakage plate with a through hole. The outer wall (203) is opposite to the inner dust leakage plate and is an outer dust leakage plate. The area between the inner ash accumulation trough (208) and the outer wall (203) is an outer ash accumulation trough (204); the total ash accumulation trough (220) is fixed outside the outer wall (203) and is surrounded by the outer dust leakage plate; the spray water trough (214) is connected to the spray water pump connecting pipe (215) to store the disinfectant; the spray water trough (214) is equipped with an annular atomizing nozzle (213), and the annular atomizing nozzle (213) is located at the outer dust removal passage. The annular atomizing nozzle (213) sprays and kills the dust-laden air in the outer dust removal passage (218) downwardly; the dust-laden gas is condensed into larger particles under the condensation of droplets and particles; under the dual effects of centrifugal force and gravity, the larger particles are separated from the dust-laden airflow and collide with the wall surface, and successively pass through the inner dust leakage plate and the outer dust leakage plate and gather in the total dust accumulation groove (220); the rotating transmission shaft 210 is fixed at the bottom of the inner dust accumulation groove (208) and does not contact the outer wall (203) and the total dust accumulation groove (220); the two sides of the power wall (207) are An outer spiral blade (206) and an inner spiral blade (209) are fixed on the sides respectively, the spiral direction of the outer spiral blade (206) is gradually increased in the counterclockwise direction along the outer wall (203), and the spiral direction of the inner spiral blade (209) is gradually decreased in the counterclockwise direction, and the rotating power shaft (210) drives the power wall (207) to rotate counterclockwise; the rotating power motor (211) drives the rotating power shaft (210) to rotate, thereby driving the power wall (207) to rotate, thereby driving the outer spiral blade (206) and the inner spiral blade (209) to rotate, thereby driving the inner and outer dust-laden airflows to rotate; One side of the air inlet (201) is connected to the outside, and the other side is connected to the external dust storage tank (204) through the air inlet duct (202); the exhaust duct (212) is externally connected to the negative pressure fan (221), forming a negative pressure chamber (205) inside the dust removal and disinfection module; The dust-laden gas in the outer dust removal passage (218) gradually increases in pressure as the outer spiral blades (206) rotate counterclockwise and enters the inner dust removal passage (219); the dust-laden airflow in the inner dust removal passage (219) gradually decreases in pressure as the inner spiral blades (209) rotate counterclockwise and enters the negative pressure chamber (205), and is discharged from the system through the exhaust duct (212); The crawler (216) is powered by a motor battery (217) and has a built-in forward motor. The automatic cleaning device is arranged between two wings of the crawler. The crawler (216) drives the automatic cleaning device to remove dust and disinfect.

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