Self-cleaning type cooling and ventilating system

Abstract

The utility model relates to a self-cleaning cooling ventilation system which comprises one or more self-cleaning cooling modules, each self-cleaning cooling module comprises a shell, an airtight valve, a fan assembly, a cleaning assembly and a cooling assembly, a ventilation channel used for guiding air to flow is defined by the shells, the airtight valves are used for closing and opening the ventilation channel, and the fan assemblies are used for cleaning the cooling assemblies. The fan assembly is used for driving air to flow along the ventilation channel, the cleaning assembly is used for filtering impurities in the air, and the cooling assembly is used for humidifying and cooling the air. On one hand, the self-cleaning cooling module integrates the effects of air supply, cleaning and cooling in the same shell, unnecessary connecting pipelines are reduced, and the structure is more compact; and on the other hand, one or more self-cleaning cooling modules can be installed according to the actual air supply requirement, the self-cleaning cooling modules can be installed and used flexibly, and the installation position can be selected and one or more self-cleaning modules can be started according to the actual requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation, in particular to a self-cleaning cooling ventilation system. Background Art

[0002] In a steam turbine house, there are equipment such as steam turbine units, deaerators and thermal pipelines. These equipment will generate a large amount of heat during operation. In summer, when the outdoor temperature is high, an external ventilation system is needed to take away the heat dissipated by the equipment. In winter, it is necessary to maintain a warm indoor environment and prevent cold outdoor air from blowing into the room. For the existing ventilation system to continuously supply clean and low-temperature fresh air, it must have a fan section, a filtration section and a cooling section. As a result, the volume of the ventilation system will be too large, and the ventilation system also needs to be frequently overhauled and maintained. In the steam turbine house, there are many pipelines around the walls of the steam turbine house. A ventilation system with too large a volume and requiring regular maintenance and cleaning is not suitable for use in the steam turbine house. Summary of the Utility Model

[0003] Therefore, the technical problem to be solved by the utility model is to provide a self-cleaning cooling ventilation system with a compact structure and flexible installation and use according to practical needs.

[0004] To solve the above technical problem, the utility model provides a self-cleaning cooling ventilation system, including one or more self-cleaning cooling modules. The self-cleaning cooling module includes:

[0005] A housing that encloses a ventilation channel for guiding air flow;

[0006] An airtight valve connected to the housing for closing and opening the ventilation channel;

[0007] A fan assembly including a rotating impeller and a driving device. The rotating impeller is installed in the ventilation channel for driving air to flow along the ventilation channel, and the driving device is used to drive the rotating impeller to rotate;

[0008] A cleaning assembly including a guide louver, a collection box and a discharging device. The guide louver and the collection box are installed in the ventilation channel. The guide louver is used to guide the air to change the flow direction and block impurities in the air. The collection box is used to collect impurities in the air. The cleaning part is installed in the ventilation channel, and the discharging device is used to discharge the impurities in the collection box out of the ventilation channel;

[0009] A cooling assembly including a filter wet film and a spraying device. The filter wet film is installed in the ventilation channel for humidifying and cooling the air, and the spraying device is used to spray a coolant onto the filter wet film.

[0010] Further, the flow guiding louver includes a plurality of V-shaped blades arranged in sequence, and V-shaped flow guiding holes are formed between adjacent V-shaped blades.

[0011] Further, the ventilation channel includes a first channel section, a second channel section, and a third channel section arranged in sequence along the air flow direction. The rotary impeller is installed in the first channel section, the flow guiding louver and the collection box are installed in the second channel section, the filter wet film is installed in the third channel section. The discharge device includes a discharge pipe, one end of the discharge pipe extends into the ventilation channel and is communicated with the collection box, and the other end of the discharge pipe extends out of the ventilation channel.

[0012] Further, the ventilation channel includes a first channel section, a second channel section, and a third channel section arranged in sequence along the air flow direction. The flow guiding louver and the collection box are installed in the first channel section, the rotary impeller is installed in the second channel section, the filter wet film is installed in the third channel section. The discharge device includes a discharge pipe and a dust removal fan, one end of the discharge pipe extends into the ventilation channel and is communicated with the collection box, and the other end of the discharge pipe extends out of the ventilation channel and is connected to the dust removal fan.

[0013] Further, the discharge pipes of multiple self-cleaning and cooling modules are connected to the same dust removal fan.

[0014] Further, the channel section where the flow guiding louver and the collection box are located is divided into a first channel part and a second channel part in parallel. The flow guiding louver and the collection box are installed in the first channel part. The cleaning assembly further includes a dust sensor and a regulating valve. The dust sensor is installed at the air inlet of the ventilation channel, and the regulating valve is installed in the second channel part.

[0015] Further, the spraying device includes a spray head, a water supply pipe, a water pump, and a water tank. The spray head is arranged in the ventilation channel and is used to spray the spraying liquid onto the filter wet film. One end of the water supply pipe extends into the ventilation channel and is communicated with the spray head, the other end of the water supply pipe extends out of the ventilation channel and is communicated with the outlet of the water pump, the inlet of the water pump is communicated with the water tank, and a float valve is arranged at the water inlet of the water tank.

[0016] Further, the water supply pipes of multiple self-cleaning and cooling modules are connected to the same water pump.

[0017] Further, the spraying device further includes a water receiving tray and a return water pipe. The water receiving tray is arranged in the ventilation passage and receives the spraying liquid dripping from the filter wet film. One end of the return water pipe extends into the ventilation passage and is connected to the water receiving tray, and the other end of the return water pipe extends out of the ventilation passage and communicates with the water tank.

[0018] Further, the airtight valve is a louver valve with adjustable air outlet angle, and the louver valve is installed at the air outlet of the ventilation passage.

[0019] The above technical solution of the present utility model has the following advantages compared with the prior art: The self-cleaning cooling and ventilation system described in the present utility model includes one or more self-cleaning cooling modules. On the one hand, the self-cleaning cooling module integrates the functions of air supply, cleaning, and cooling in the same housing, reducing unnecessary connecting pipes and making the structure more compact. On the other hand, one or more self-cleaning cooling modules can be installed according to the actual air supply needs, and the installation and use of the self-cleaning cooling module are very flexible. The installation position can be selected according to the actual needs, and one or more self-cleaning modules can be turned on. Furthermore, the dust concentration in the incoming air is detected by a dust sensor, and the internal regulating valve and the spraying device are regulated to achieve the purpose of supplying clean and low-temperature fresh air with low energy consumption. Description of the Drawings

[0020] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to the specific embodiments of the present utility model and in conjunction with the drawings.

[0021] Figure 1 It is a schematic diagram of the self-cleaning cooling and ventilation system disclosed in Embodiment 1 of the present utility model;

[0022] Figure 2 It is a schematic diagram of the diversion louver disclosed in Embodiment 1 of the present utility model;

[0023] Figure 3 It is a schematic diagram of the self-cleaning cooling and ventilation system disclosed in Embodiment 2 of the present utility model;

[0024] Figure 4 It is a schematic diagram of the self-cleaning cooling and ventilation system disclosed in Embodiment 3 of the present utility model;

[0025] Figure 5 It is a connection schematic diagram of the impurity discharge fan disclosed in Embodiment 3 of the present utility model.

[0026] Description of the reference numerals in the drawings: 1. Housing; 11. Protective net; 2. Airtight valve; 3. Fan assembly; 41. Deflector louvers; 411. V-shaped blades; 412. Deflection holes; 42. Collection box; 43. Discharge pipe; 44. Impurity discharge fan; 45. Dust sensor; 46. Regulating valve; 51. Filter wet film; 52. Sprinkler head; 53. Water supply pipe; 54. Water pump; 55. Water tank; 551. Water inlet pipe; 56. Float valve; 57. Water receiving tray; 58. Return water pipe; 59. Sewage pipe; 6. Wall. Detailed implementation manners

[0027] The present utility model will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the specific embodiments cited are not intended to limit the present utility model.

[0028] Embodiment 1

[0029] See Figure 1 and Figure 2 As shown in the figure, an embodiment of the self-cleaning cooling and ventilation system in the present utility model.

[0030] The above self-cleaning cooling and ventilation system includes one or more self-cleaning cooling modules, and the above self-cleaning cooling module includes:

[0031] Housing 1, the above housing 1 encloses a ventilation channel for guiding the flow of air;

[0032] Airtight valve 2, the above airtight valve 2 is connected to the above housing 1 and is used to close and open the above ventilation channel;

[0033] Fan assembly 3, the above fan assembly 3 includes a rotating impeller and a driving device, the above rotating impeller is installed in the above ventilation channel and is used to drive the air to flow along the above ventilation channel, and the above driving device is used to drive the above rotating impeller to rotate;

[0034] Cleaning assembly, the above cleaning assembly includes deflector louvers 41, collection box 42 and a discharging device, the above deflector louvers 41 and the above collection box 42 are installed in the above ventilation channel, the above deflector louvers 41 are used to guide the air to change the flow direction and block the impurities in the air, the above collection box 42 is used to collect the impurities in the air, and the above discharging device is used to discharge the impurities in the above collection box 42 outside the above ventilation channel;

[0035] Cooling assembly, the above cooling assembly includes a filter wet film 51 and a spraying device, the above filter wet film 51 is installed in the above ventilation channel and is used to humidify and cool the air, and the above spraying device is used to spray a coolant onto the above filter wet film 51.

[0036] The above ventilation channel has an air inlet for receiving air and an air outlet for discharging air. When the airtight valve 2 closes the ventilation channel, air cannot pass through the ventilation channel. When the airtight valve 2 opens the ventilation channel, air can pass through the ventilation channel. The above fan assembly 3 is combined with the above housing 1 to achieve the fan function. The above cleaning assembly is combined with the above housing 1 to achieve the cleaning function. The opening of the above collection box 42 is arranged opposite to the air inlet of the ventilation channel, facilitating the collection of impurities (particles and / or droplets). The guide louvers 41 are arranged on the side of the opening of the collection box 42 and there is a certain distance between the guide louvers and the side wall of the ventilation channel. The above cooling assembly is combined with the above housing 1 to achieve the function of humidifying and cooling air, and the edge of the above filter wet film 51 is connected to the side wall of the ventilation channel.

[0037] During use, the above housing 1 is installed on the wall 6. The air inlet of the ventilation channel faces the outside, and the air outlet of the ventilation channel faces the inside. The airtight valve 2 can adjust the overall opening and closing state. When the fan assembly 3 is running, the airtight valve 2 is in the open state. When the fan assembly 3 is closed, the airtight valve 2 is also correspondingly closed, which can prevent the indoor gas from flowing outwards. For example, in summer, the airtight valve 2 is opened and the fan assembly 3 is running, so that the low-temperature fresh air enters the room. In winter, the airtight valve 2 is closed to prevent the warm air in the room from being discharged outwards and maintain the indoor air pressure stable.

[0038] When the fan assembly 3 is running and the airtight valve 2 is in the open state, the outdoor air enters the ventilation channel from the air inlet of the ventilation channel. When the air flows through the guide louvers 41 from one side of the guide louvers 41, the air is bent, and the clean air flows out from the other side of the guide louvers 41. The impurities (particles and droplets) in the air move in a straight line under the action of inertia and are not easily discharged with the air, and finally reach the collection box 42. When the air passes through the filter wet film 51, due to the continuous flow of clean air, water will directly evaporate on the surface of the filter wet film 51, reducing the temperature of the clean air by means of water evaporation, and when the clean air passes through the filter wet film 51, it can filter the fine dust in the clean air.

[0039] In the self-cleaning and cooling module of the present utility model, on the one hand, the self-cleaning and cooling module integrates the functions of air supply, cleaning and cooling in the same housing, reducing unnecessary connecting pipes and making the structure more compact; on the other hand, one or more self-cleaning and cooling modules can be installed according to the actual air supply needs, and the installation and use of the self-cleaning and cooling modules are very flexible, and the installation position and the opening of one or more self-cleaning modules can be selected according to actual needs.

[0040] In this embodiment, the above guide louvers 41 include a plurality of V-shaped blades 411 arranged in sequence, and a V-shaped diversion hole 412 is formed between adjacent above V-shaped blades 411.

[0041] The openings of the V-shaped blades 411 in the same column of the above-mentioned flow guide louver 41 face the same direction, and the openings of the V-shaped blades 411 face away from the air inlet of the ventilation channel. There is a certain distance between two adjacent V-shaped blades 411. When air passes through the flow guide louver 41, under the action of the V-shaped blades 411, the air undergoes two bends, and the impurity removal effect is better.

[0042] In this embodiment, the above-mentioned ventilation channel includes a first channel section, a second channel section, and a third channel section arranged in sequence along the air flow direction. The above-mentioned rotating impeller is installed in the above-mentioned first channel section, the above-mentioned flow guide louver 41 and the above-mentioned collection box 42 are installed in the above-mentioned second channel section, the above-mentioned filter wet film 51 is installed in the above-mentioned third channel section, the above-mentioned discharge device includes a discharge pipe 43, one end of the above-mentioned discharge pipe 43 extends into the above-mentioned ventilation channel and communicates with the above-mentioned collection box 42, and the other end of the above-mentioned discharge pipe 43 extends out of the above-mentioned ventilation channel.

[0043] Since the fan assembly 3 is arranged on the side of the box opening of the collection box 42, under the positive pressure of the fan assembly 3, part of the air flow will enter the collection box 42 and then flow out from the discharge pipe 43. The air flow will blow out all the impurities, achieving the purpose of discharging all the impurities collected by the collection box to the outside of the wall.

[0044] In this embodiment, the above-mentioned spraying device includes a spray head 52, a water supply pipe 53, a water pump 54, and a water tank 55. The above-mentioned spray head 52 is arranged in the above-mentioned ventilation channel. The above-mentioned spray head 52 is used to spray the spraying liquid onto the above-mentioned filter wet film 51. One end of the above-mentioned water supply pipe 53 extends into the above-mentioned ventilation channel and communicates with the above-mentioned spray head 52. The other end of the above-mentioned water supply pipe 53 extends out of the above-mentioned ventilation channel and communicates with the outlet of the above-mentioned water pump 54. The inlet of the above-mentioned water pump 54 communicates with the above-mentioned water tank 55, and a float valve 56 is arranged at the water inlet of the above-mentioned water tank 55.

[0045] The above-mentioned spray head 52 is arranged on the top of the filter wet film 51, the water pump 54 is arranged inside the water tank 55, and the water tank 55 is communicated with a water inlet pipe 551. A float valve 56 is arranged on the water inlet pipe 551. Under the action of the water pump 54, the spray head 52 sprays water on the top of the filter wet film 51, and the water flows from top to bottom to wet the entire filter wet film 51. When the water level in the water tank 55 is too low, the float valve 56 will be in an open state, and the water evaporated and consumed is replenished into the water tank 55 through the water inlet pipe.

[0046] In this embodiment, the above-mentioned spraying equipment also includes a water receiving tray 57 and a return water pipe 58. The above-mentioned water receiving tray 57 is arranged in the above-mentioned ventilation channel and receives the spray liquid dripping from the above-mentioned filter wet membrane 51. One end of the above-mentioned return water pipe 58 extends into the above-mentioned ventilation channel and is connected to the above-mentioned water receiving tray 57, and the other end of the above-mentioned return water pipe 58 extends out of the above-mentioned ventilation channel and is connected to the above-mentioned water tank 55.

[0047] The water receiving tray 57 is arranged below the wet filter membrane 51. The droplets formed by the unevaporated water on the wet filter membrane 51 drip into the water receiving tray 57 under the action of its own weight, and the water in the water receiving tray 57 flows back to the inside of the water tank 55 through the return pipe 58. A sewage pipe 59 is also arranged at the bottom of the water tank 55, and the sewage pipe 59 is used to discharge the dirt deposited inside the water tank 55 to the outside.

[0048] In this embodiment, the water supply pipes 53 of the plurality of self-cleaning and cooling modules are connected to the same water pump 54 .

[0049] Since the spray heads 52 are connected to the water pump 54 via the water supply pipe 53 , a single water pump 54 can be connected to a plurality of spray heads 52 at the same time to humidify a plurality of filter wet membranes 51 at the same time, thus saving the number of water pumps 54 .

[0050] In this embodiment, the airtight valve 2 is a shutter valve with adjustable air outlet angle, and the shutter valve is installed at the air outlet of the ventilation channel.

[0051] The airtight valve 2 can adjust the exhaust direction of clean air, for example, adjust the clean air to blow out horizontally, downward or upward. The solution with adjustable clean air blowing direction can facilitate the gas circulation indoors (such as inside the steam engine room), thereby better regulating the indoor temperature. In addition, if some heating equipment happens to be in the exhaust range of the self-cleaning cooling module, the angle of the airtight valve can also be adjusted so that the clean air blows directly to the heating equipment, directly reducing the temperature of the heating equipment and facilitating the stable operation of the equipment.

[0052] Embodiment 2

[0053] See also Figure 3 As shown, another embodiment of the self-cleaning cooling and ventilation system in the utility model.

[0054] The rest is the same as the first embodiment, except that:

[0055] In this embodiment, the channel section where the above-mentioned diversion louver 41 and the above-mentioned collection box 42 are located is divided into a first channel part and a second channel part in parallel. The above-mentioned diversion louver is installed in the above-mentioned first channel part. The cleaning assembly further includes a dust sensor 45 and a regulating valve 46. The above-mentioned dust sensor 45 is installed at the air inlet of the above-mentioned ventilation channel, and the above-mentioned regulating valve 46 is installed in the above-mentioned second channel part. The above-mentioned dust sensor 45 detects the dust concentration in the air in real time, and adjusts the above-mentioned regulating valve 46 and the above-mentioned spraying device according to the dust concentration in the air;

[0056] The control method of the above-mentioned self-cleaning cooling and ventilation system includes the following steps:

[0057] S1. Detect the dust concentration in the air in real time through the above-mentioned dust sensor 45;

[0058] S2. Judge the range where the detected dust concentration is located. If it is less than or equal to the first preset concentration, go to step S3. If it is between the first preset concentration and the second preset concentration, go to step S4. If it is greater than or equal to the second preset concentration, go to step S5;

[0059] S3. Open the above-mentioned regulating valve 46 and adjust the spraying amount of the above-mentioned spraying device to the first preset spraying amount;

[0060] S4. Close the above-mentioned regulating valve 46 and adjust the spraying amount of the above-mentioned spraying device to the first preset spraying amount;

[0061] S5. Close the above-mentioned regulating valve 46 and adjust the spraying amount of the above-mentioned spraying device to the second preset spraying amount;

[0062] Among them, the first preset concentration is less than the second preset concentration, and the first preset spraying amount is less than the second preset spraying amount.

[0063] The parallel connection of the first channel part and the second channel part mentioned above means that the inlets of the first channel part and the second channel part are connected to the same space, and the outlets of the first channel part and the second channel part are connected to the same space. The air that can enter and exit the first channel part can also enter and exit the second channel part. Specifically, in this embodiment, the inlets of the first channel part and the second channel part are both connected to the channel section where the rotating impeller is located, and the outlets of the first channel part and the second channel part are both connected to the channel section where the filter wet film is located. A protective net is provided at the air inlet of the ventilation channel, the dust sensor 45 is connected to the protective net 11, and the regulating valve 46 is an electric air valve whose opening and closing state can be regulated. When the dust sensor 45 detects that the dust concentration in the incoming air is relatively low, the electric air valve can be regulated to the open state. At this time, the air mainly enters the room through the second channel part, and the overall resistance of the air flow will be reduced. The fan assembly 3 can provide a large amount of fresh air with less energy consumption, thus completing the supply of low-temperature fresh air. When the dust sensor 45 detects that the dust concentration in the incoming air is relatively high, the electric air valve can be regulated to the closed state. At this time, the air mainly enters the room through the first channel part, and the dust in the air is filtered out, ensuring that the fresh air entering the room has a low dust content.

[0064] Compare the dust concentration of the incoming air with a predetermined value. If the dust concentration of the incoming air is less than the predetermined value, open the air valve to make the incoming air directly pass through the guide louver, and only remove the impurities in the incoming air and reduce the temperature of the incoming air through the filter wet film; if the dust concentration of the incoming air is greater than the predetermined value, that is, the air is dirty and the guide louver needs to process the air, then close the air valve and use the guide louver to filter out the impurities in the air; also preset a high concentration value. When the dust sensor detects that the dust concentration of the incoming air exceeds this high concentration value, increase the water supply flow rate of the water pump to make more water flow downward from the top of the filter wet film. Since the concentration of air impurities is relatively large, after the guide louver processes the air, the impurity content is still relatively large. With sufficient water, wash the impurities that the guide louver has not completely filtered out, so as to achieve the purpose of supplying fresh air with low energy consumption.

[0065] Embodiment Three

[0066] See Figure 4 and Figure 5 As shown in the figure, another embodiment of the self-cleaning cooling ventilation system in the present invention.

[0067] The rest is the same as that of Embodiment Two, and the differences are as follows:

[0068] In this embodiment, the ventilation channel includes a first channel section, a second channel section, and a third channel section arranged in sequence along the air flow direction. The diversion louver 41 and the collection box 42 are installed in the first channel section, the rotating impeller is installed in the second channel section, the filter wet film 51 is installed in the third channel section. The discharge device includes a discharge pipe 43 and a waste discharge fan 44. One end of the discharge pipe 43 extends into the ventilation channel and communicates with the collection box 42, and the other end of the discharge pipe 43 extends outside the ventilation channel.

[0069] The air flowing through the ventilation channel first passes through the diversion louver 41 to remove impurities and droplets. Then the clean air passes through the fan assembly 3, which can reduce the erosion of rainwater and impurities on the fan assembly 3, thereby extending the service life of the fan assembly 3 and ensuring the stable operation of the fan assembly 3. However, since the fan assembly 3 is located behind the diversion louver, at this time the diversion louver is in a state of negative pressure air supply. A waste discharge fan needs to be added to the discharge pipe. The cleaning fan needs to be turned on when the supply fan is working, so as to use the waste discharge fan to suck out the impurities inside the discharge pipe and then stably discharge the impurities to the outside through the discharge pipe.

[0070] In this embodiment, the discharge pipes 43 of multiple self-cleaning and cooling modules are connected to the same waste discharge fan 44.

[0071] Multiple self-cleaning and cooling modules can be combined with each other and embedded in the wall body. The corresponding number of self-cleaning and cooling modules can be increased according to the on-site air volume requirements. Connect the discharge pipes of two adjacent self-cleaning modules together, so that the two discharge pipes share one waste discharge fan, which can reduce the number of waste discharge fans.

[0072] Obviously, the above embodiments are merely examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A self-cleaning cooling and ventilation system, characterized in that, Comprising one or more self-cleaning cooling modules, the self-cleaning cooling module comprising: A housing that encloses a ventilation channel for guiding air flow; An airtight valve connected to the housing for closing and opening the ventilation channel; A fan assembly comprising a rotating impeller and a driving device, the rotating impeller being installed in the ventilation channel for driving air to flow along the ventilation channel, and the driving device being used to drive the rotating impeller to rotate; A cleaning assembly comprising a deflector louver, a collection box, and a discharge device, the deflector louver and the collection box being installed in the ventilation channel, the deflector louver being used to guide the air to change the flow direction and block impurities in the air, the collection box being used to collect impurities in the air, the cleaning part being installed in the ventilation channel, and the discharge device being used to discharge the impurities in the collection box outside the ventilation channel; A cooling assembly comprising a filter wet film and a spraying device, the filter wet film being installed in the ventilation channel for humidifying and cooling the air, and the spraying device being used to spray a coolant onto the filter wet film.

2. The self-cleaning cooling and ventilation system according to claim 1, characterized in that The deflector louver comprises a plurality of V-shaped blades arranged in sequence, and a V-shaped diversion hole is formed between adjacent V-shaped blades.

3. The self-cleaning cooling and ventilation system according to claim 1, wherein The ventilation channel comprises a first channel section, a second channel section, and a third channel section arranged in sequence along the air flow direction. The rotating impeller is installed in the first channel section, the deflector louver and the collection box are installed in the second channel section, the filter wet film is installed in the third channel section, the discharge device comprises a discharge pipe, one end of the discharge pipe extends into the ventilation channel and communicates with the collection box, and the other end of the discharge pipe extends outside the ventilation channel.

4. The self-cleaning cooling and ventilation system according to claim 1, wherein The ventilation channel comprises a first channel section, a second channel section, and a third channel section arranged in sequence along the air flow direction. The deflector louver and the collection box are installed in the first channel section, the rotating impeller is installed in the second channel section, the filter wet film is installed in the third channel section, the discharge device comprises a discharge pipe and a dust removal fan, one end of the discharge pipe extends into the ventilation channel and communicates with the collection box, and the other end of the discharge pipe extends outside the ventilation channel and is connected to the dust removal fan.

5. The self-cleaning cooling and ventilation system according to claim 4, characterized in that, The discharge pipes of multiple self-cleaning cooling modules are connected to the same dust removal fan.

6. The self-cleaning cooling and ventilation system according to claim 1, wherein The channel section where the deflector louver and the collection box are located is divided into a first channel part and a second channel part in parallel. The deflector louver and the collection box are installed in the first channel part. The above cleaning assembly further comprises a dust sensor and a regulating valve. The dust sensor is installed at the air inlet of the ventilation channel, and the regulating valve is installed in the second channel part.

7. The self-cleaning cooling and ventilation system according to claim 1, wherein The spray device includes a spray head, a water supply pipe, a water pump, and a water tank. The spray head is arranged in the ventilation channel and is used to spray the spray liquid onto the filter wet film. One end of the water supply pipe extends into the ventilation channel and is connected to the spray head. The other end of the water supply pipe extends outside the ventilation channel and is connected to the outlet of the water pump. The inlet of the water pump is connected to the water tank, and a float valve is provided at the water inlet of the water tank.

8. The self-cleaning cooling and ventilation system according to claim 7, characterized in that, The water supply pipes of multiple self-cleaning and cooling modules are connected to the same water pump.

9. The self-cleaning cooling and ventilation system according to claim 7, characterized in that The spray device further includes a water receiving tray and a return water pipe. The water receiving tray is arranged in the ventilation channel and receives the spray liquid dripping from the filter wet film. One end of the return water pipe extends into the ventilation channel and is connected to the water receiving tray. The other end of the return water pipe extends outside the ventilation channel and is connected to the water tank.

10. The self-cleaning cooling and ventilation system according to claim 1, characterized in that, The airtight valve is a louver valve with adjustable air outlet angle, and the louver valve is installed at the air outlet of the ventilation channel.

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