CN112228979A

CN112228979A - Central central air conditioning new trend clarification plant

Info

Publication number: CN112228979A
Application number: CN202011114076.9A
Authority: CN
Inventors: 王春华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-18
Filing date: 2020-10-18
Publication date: 2021-01-15

Abstract

The invention provides a fresh air purification device of a centralized central air conditioner, which comprises a working box, a box cavity, a T-shaped cover plate, a hasp, a filter screen, a sealing rubber pad, a first fan, a PLC (programmable logic controller), a driving switch, a spraying dust-settling humidifying box structure, a water storage heating spraying frame structure and an air sterilizing box structure, wherein the box cavity is formed in the middle of the inner part of the working box; the T-shaped cover plate is inserted into the left side above the inner part of the working box; the hasps are respectively installed on the left side and the right side of the upper surface of the T-shaped cover plate and the left side and the middle left side of the upper surface of the working box through bolts; the filter screen bolt is installed in the middle of the lower surface of the T-shaped cover plate. The invention has the beneficial effects that: through the setting of water storage heating spray frame structure, during the use, be convenient for more even spray water to the work of dust fall humidification is carried out the new trend, and then has increased the functionality.

Description

Central central air conditioning new trend clarification plant

Technical Field

The invention belongs to the technical field of fresh air purification, and particularly relates to a fresh air purification device of a centralized central air conditioner.

Background

The central air conditioning system is composed of one or more cold and heat source systems and a plurality of air conditioning systems, the system is different from the traditional refrigerant type air conditioner, air is processed in a centralized mode to meet the comfort requirement, the principle of liquid gasification refrigeration is adopted to provide required cooling capacity for the air conditioning system to offset the heat load of the indoor environment, the heating system provides required heat for the air conditioning system to offset the cold and heat loads of the indoor environment, a unit is required to be used in the central air conditioning system to achieve the effect of air intake and air exchange, in the process of using the central air conditioning system, the entered fresh air can be purified through fresh air purifying equipment and then reaches the inside of the central air conditioning system to work, and therefore the fact that the air injected into the indoor by the central air conditioning system cannot contain a large amount of dust or other sundries can be guaranteed, and clean fresh air can be effectively provided for.

However, the existing fresh air purification equipment also has the problems that the existing fresh air purification equipment is inconvenient to spray, has the functions of dust fall and air humidification, is inconvenient to filter and recycle water and is inconvenient to disinfect and protect the evolved air.

Therefore, the invention of the fresh air purification equipment of the centralized central air conditioner is very necessary.

Disclosure of Invention

In order to solve the technical problems, the invention provides a central air-conditioning fresh air purification device, which aims to solve the problems that the existing fresh air purification device is inconvenient to spray for dust fall and humidify air, the used water is inconvenient to filter and recycle, and the evolved air is inconvenient to disinfect and protect. A central air-conditioning fresh air purification device comprises a working box, a box cavity, a T-shaped cover plate, a hasp, a filter screen, a sealing rubber pad, a first fan, a PLC (programmable logic controller), a driving switch, a spraying dust-settling and humidifying box structure, a water storage heating and spraying frame structure and an air sterilizing box structure, wherein the box cavity is formed in the middle of the inner part of the working box; the T-shaped cover plate is inserted into the left side above the inner part of the working box; the hasps are respectively installed on the left side and the right side of the upper surface of the T-shaped cover plate and the left side and the middle left side of the upper surface of the working box through bolts; the filter screen bolt is arranged in the middle of the lower surface of the T-shaped cover plate; the sealing rubber pad screw is arranged on the left side of the lower part of the inner wall of the box cavity; the first fan bolt is arranged on the right side of the inner wall of the box cavity; the PLC bolt is arranged at the upper right part of the front surface of the working box, and the front surface of the PLC is electrically connected with a driving switch; the spraying dust-settling humidifying box is structurally arranged at the right end of the working box; the water storage heating spraying frame structure is arranged at the front end of the spraying dust-settling humidifying box structure; the air sterilizing box structure is arranged at the left end of the working box; the spraying dust-settling humidifying box structure comprises an air inlet box, a connecting pipeline, a first water filter screen, a second water filter screen, a water flow pipe, a reflux pump and a discharge valve, wherein the connecting pipeline is welded at the upper parts of the left end and the right end of the air inlet box, and the left end of the connecting pipeline is connected with a first fan through a bolt; the first water filter screen and the second water filter screen are respectively installed on the lower part of the inner wall of the air inlet box through bolts; one end of the water flow pipe is in threaded connection with the reflux pump, and the other end of the water flow pipe penetrates through the lower part of the front side in the air inlet box; the reflux pump is arranged on the right side in the air inlet box; the discharge valve is installed at the lower part of the left side in the air inlet box through bolts.

Preferably, the water storage heating spray frame structure comprises a water injection tank, a first heating pipe, a water delivery pump, a water delivery pipe, a transverse pipe, a longitudinal pipe and a spray head, wherein the water injection tank is welded at the lower part of the front end of the air inlet tank, and a water flow pipe is embedded in the rear side of the interior of the water injection tank; the first heating pipe bolt is arranged at the right lower side inside the water injection tank; the rear end of the water delivery pump is in threaded connection with the left lower part of the front end of the water injection tank; one end of the water delivery pipe is in threaded connection with the upper end of the water delivery pump, and the other end of the water delivery pipe is embedded into the front end of the transverse pipe; the transverse pipe is welded on the rear side of the upper part of the inner wall of the air inlet box; the longitudinal pipes are respectively welded between the front ends of the transverse pipes and the front side of the upper part of the inner wall of the air inlet box; the sprinkler head is connected with the lower end of the longitudinal pipe in a threaded manner.

Preferably, the air sterilizing box structure comprises a liquid storage box, an injection pipe, an injection hopper, a stirring motor, a stirring shaft, stirring blades, a second heating pipe and an air inlet sterilizing box structure, wherein the injection pipe is welded at the upper part of the left end of the liquid storage box, and the injection hopper is welded at the upper end of the injection pipe; the stirring motor is mounted on the left side of the upper end of the liquid storage tank through a bolt; one end of the stirring shaft is connected with an output shaft coupler of the stirring motor; the stirring blades are respectively welded at the left side and the right side of the stirring shaft; the second heating pipe is embedded into the left lower side of the interior of the liquid storage tank; the steam inlet sterilizing box structure is arranged at the left ends of the liquid storage box and the working box.

Preferably, the steam inlet sterilizing box structure comprises a sterilizing main box, an upper steam conveying pipe, a connecting box, a flow dividing head, a second fan and a lower steam conveying pipe, wherein the sterilizing main box is welded at the left end of the working box; the upper end of the upper steam transmission pipe penetrates through the main disinfection box and is welded at the front end of the connecting box; the lower end of the upper steam transmission pipe is connected with a second fan through a bolt; the shunting head bolt is arranged at the right end of the connecting box; one end of the lower steam delivery pipe is connected with the second fan through a bolt, and the other end of the lower steam delivery pipe is welded on the right side of the upper end of the liquid storage tank.

Preferably, the number of the connecting pipelines on the outer wall of the air inlet box is two, and the connecting pipelines are connected with the first fan.

Preferably, the first water filter screen and the second water filter screen are respectively an activated carbon screen and a PE screen, and the first water filter screen and the second water filter screen are arranged below the connecting pipeline.

Preferably, the number of the transverse pipes at the front end of the water conveying pipe is multiple, and the number of the sprinkler heads at the front end of the transverse pipes is multiple.

Preferably, the left side of the liquid storage tank is connected with the injection hopper through an injection pipe, and a second heating pipe is arranged in the liquid storage tank.

Preferably, the flow distribution head at the right end of the connecting box is conical, the flow distribution head is a stainless steel head, and a through hole is formed in the flow distribution head.

Preferably, the left side and the right side of the inside of the main disinfection box are provided with through holes, and a pipeline is arranged between the right side of the main disinfection box and the working box.

Compared with the prior art, the invention has the beneficial effects that:

1. in the invention, two connecting pipelines are arranged on the outer wall of the air inlet box, and the connecting pipelines are connected with the first fan, so that air can conveniently enter the air inlet box through the connecting pipelines to work, and can conveniently enter the box cavity to work.

2. In the invention, the first water filter screen and the second water filter screen are respectively an activated carbon screen and a PE screen, and are arranged below the connecting pipeline, so that the sprayed water can be conveniently filtered and recycled during working.

3. In the invention, the reflux pump is arranged below the inside of the air inlet box, and the water flow pipe is communicated with the water injection box, so that the reflux pump can be driven to cooperate with the water flow pipe to recover the filtered water, thereby being convenient for reutilization.

4. According to the invention, the plurality of transverse pipes are arranged at the front end of the water conveying pipe, and the plurality of spray heads are arranged at the front end of the transverse pipes, so that water can be sprayed more uniformly when the dust-settling humidifying device is used, and thus dust-settling and humidifying work can be performed on fresh air, and further the functionality is increased.

5. In the invention, one end of the water delivery pump is connected with the water injection tank, and the other end of the water delivery pump is connected with the transverse pipe, so that water can be conveniently delivered, and spraying and using are carried out.

6. According to the invention, the water injection tank adopts a stainless steel tank, and the first heating pipe is arranged in the sprinkler head, so that water in the water injection tank can be conveniently heated, and hot water can be sprayed for use.

7. In the invention, the left side of the liquid storage tank is connected with the injection hopper through the injection pipe, and the second heating pipe is arranged in the liquid storage tank, so that the green grass traditional Chinese medicine disinfectant and water can be conveniently stored when the device is used, and the device can be heated to generate hot steam for use.

8. In the invention, the stirring shaft and the stirring blades on the output shaft of the stirring motor are arranged in the liquid storage tank, so that the stirring shaft and the stirring blades are convenient to mix and stir after liquid is injected into the liquid storage tank.

9. In the invention, the second fan is connected with the liquid storage box through the lower steam transmission pipe, and meanwhile, the second fan is connected with the connecting box, so that hot steam in the liquid storage box can be conveniently transmitted into the main disinfection box, thereby disinfecting air and increasing functionality.

10. In the invention, the flow dividing head at the right end of the connecting box is conical, the flow dividing head is a stainless steel head, and the flow dividing head is internally provided with through holes, so that the steam can be conveniently dispersed and enter the main disinfection box, and can be convected with fresh air entering the main disinfection box, thereby better disinfecting work can be carried out.

11. In the invention, through holes are arranged on the left side and the right side in the main disinfection box, and a pipeline is arranged between the right side of the main disinfection box and the working box, so that the main disinfection box can be conveniently matched with the main disinfection box for communication, and air inlet and exhaust work can be carried out.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural diagram of the spraying dust suppression humidifying box structure of the invention.

Fig. 3 is a schematic structural diagram of a water storage and heating spray rack structure of the invention.

FIG. 4 is a schematic structural view of the air sterilizer structure of the present invention.

FIG. 5 is a schematic structural view of the steam-intake sterilizing compartment structure of the present invention.

Fig. 6 is a schematic electrical wiring diagram of the present invention.

In the figure:

1. a work box; 2. a tank cavity; 3. a T-shaped cover plate; 4. a hasp; 5. a filter screen; 6. sealing the rubber pad; 7. a first fan; 8. a PLC; 9. a drive switch; 10. a spraying dust-settling humidifying box structure; 101. an air inlet box; 102. connecting a pipeline; 103. a first water filtration screen; 104. a second water filtration screen; 105. a water flow pipe; 106. a reflux pump; 107. a discharge valve; 11. a water storage heating spray frame structure; 111. a water injection tank; 112. a first heating pipe; 113. a water delivery pump; 114. a water delivery pipe; 115. a transverse tube; 116. a longitudinal tube; 117. a sprinkler head; 12. an air sterilization box structure; 121. a liquid storage tank; 122. an injection pipe; 123. an injection hopper; 124. a stirring motor; 125. a stirring shaft; 126. stirring blades; 127. a second heating pipe; 128. a steam inlet sterilizing box structure; 1281. sterilizing the main box; 1282. an upper steam delivery pipe; 1283. a connection box; 1284. a flow dividing head; 1285. a second fan; 1286. a lower steam delivery pipe.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example (b):

as shown in fig. 1 to 2, a central air-conditioning fresh air purification device comprises a working box 1, a box cavity 2, a T-shaped cover plate 3, a hasp 4, a filter screen 5, a sealing rubber pad 6, a first fan 7, a PLC8, a driving switch 9, a spraying dust-settling humidifying box structure 10, a water storage heating spraying frame structure 11 and an air sterilizing box structure 12, wherein the box cavity 2 is arranged in the middle of the inside of the working box 1; the T-shaped cover plate 3 is inserted into the left side of the upper part inside the working box 1; the hasps 4 are respectively installed on the left side and the right side of the upper surface of the T-shaped cover plate 3 and the left side and the middle left side of the upper surface of the working box 1 by bolts; the filter screen 5 is arranged in the middle of the lower surface of the T-shaped cover plate 3 through bolts; the sealing rubber pad 6 is arranged on the left side of the lower part of the inner wall of the box cavity 2 through a screw; the first fan 7 is mounted on the right side of the inner wall of the box cavity 2 through bolts; the PLC8 bolt is arranged at the right upper part of the front surface of the work box 1, and the front surface of the PLC8 is electrically connected with a driving switch 9; the spraying dust-settling humidifying box structure 10 is arranged at the right end of the working box 1; the water storage heating spraying frame structure 11 is arranged at the front end of the spraying dust-settling humidifying box structure 10; the air sterilizing box structure 12 is arranged at the left end of the working box 1; the spraying dust suppression humidifying box structure 10 comprises an air inlet box 101, a connecting pipeline 102, a first water filtering net 103, a second water filtering net 104, a water flow pipe 105, a reflux pump 106 and a discharge valve 107, wherein the connecting pipeline 102 is welded on the upper parts of the left end and the right end of the air inlet box 101, and the left end of the connecting pipeline 102 is in bolted connection with a first fan 7; the first water filter screen 103 and the second water filter screen 104 are respectively bolted on the lower part of the inner wall of the air inlet box 101; one end of the water flow pipe 105 is in threaded connection with the reflux pump 106, and the other end of the water flow pipe penetrates through the lower part of the front side inside the air inlet box 101; the reflux pump 106 is arranged on the right side inside the air inlet box 101; the discharge valve 107 is bolted to the lower left side of the interior of the inlet box 101.

As shown in fig. 3, in the above embodiment, specifically, the water storage and heating spray rack structure 11 includes a water injection tank 111, a first heating pipe 112, a water delivery pump 113, a water delivery pipe 114, a transverse pipe 115, a longitudinal pipe 116 and a spray head 117, the water injection tank 111 is welded at the lower part of the front end of the air inlet tank 101, and a water flow pipe 105 is embedded in the rear side of the interior of the water injection tank 111; the first heating pipe 112 is mounted at the right lower side of the inside of the water injection tank 111 through bolts; the rear end of the water delivery pump 113 is in threaded connection with the left lower part of the front end of the water injection tank 111; one end of the water delivery pipe 114 is in threaded connection with the upper end of the water delivery pump 113, and the other end of the water delivery pipe is embedded in the front end of the transverse pipe 115; the transverse pipe 115 is welded at the rear side of the upper part of the inner wall of the air inlet box 101; the longitudinal pipes 116 are respectively welded between the front ends of the transverse pipes 115 and the front side of the upper part of the inner wall of the air inlet box 101; the sprinkler head 117 is screwed to the lower end of the longitudinal pipe 116; the water pump 113 is driven to make the water in the water injection tank 111 reach the transverse pipe 115 and the longitudinal pipe 116 through the water pipe 114, and then spray the water into the air inlet tank 101 through the spray head 117, so as to perform dust settling and humidifying on the fresh air.

As shown in fig. 4, in the above embodiment, specifically, the air sterilization box structure 12 includes a liquid storage box 121, an injection pipe 122, an injection hopper 123, a stirring motor 124, a stirring shaft 125, a stirring blade 126, a second heating pipe 127 and an air inlet sterilization box structure 128, the injection pipe 122 is welded on the upper portion of the left end of the liquid storage box 121, and the injection hopper 123 is welded on the upper end of the injection pipe 122; the stirring motor 124 is mounted on the left side of the upper end of the liquid storage tank 121 through a bolt; one end of the stirring shaft 125 is connected with an output shaft coupler of the stirring motor 124; the stirring blades 126 are respectively welded on the left side and the right side of the stirring shaft 125; the second heating pipe 127 is embedded in the left lower side of the interior of the liquid storage tank 121; the steam inlet sterilizing box structure 128 is arranged at the left ends of the liquid storage box 121 and the working box 1; the liquid storage tank 121 is filled with the green grass traditional Chinese medicine disinfectant and water through the injection hopper 123 and the injection pipe 122, then the stirring motor 124 is driven to drive the stirring shaft 125 and the stirring blades 126 to rotate, mix and stir, and after the mixing and stirring are completed, the second heating pipe 127 is driven to enable the liquid in the liquid storage tank 121 to generate gas.

As shown in fig. 5, in the above embodiment, specifically, the steam inlet sterilizing box structure 128 includes a sterilizing main box 1281, an upper steam pipe 1282, a connecting box 1283, a splitter 1284, a second fan 1285 and a lower steam pipe 1286, and the sterilizing main box 1281 is welded at the left end of the work box 1; the upper end of the upper steam pipe 1282 penetrates through the main disinfection box 1281 and is welded at the front end of the connecting box 1283; the lower end of the upper steam transmission pipe 1282 is connected with a second fan 1285 through a bolt; the shunt head 1284 is arranged at the right end of the connecting box 1283 through a bolt; one end of the lower steam transmission pipe 1286 is connected with the second fan 1285 through a bolt, and the other end is welded on the right side of the upper end of the liquid storage tank 121.

In the above embodiment, specifically, two connecting pipes 102 are arranged on the outer wall of the air inlet box 101, and the connecting pipes 102 are connected to the first fan 7, so that air can enter the air inlet box 101 through the connecting pipes 102 to work, and can enter the box cavity 2 to work.

In the above embodiment, specifically, the first water filter screen 103 and the second water filter screen 104 are respectively an activated carbon screen and a PE screen, and the first water filter screen 103 and the second water filter screen 104 are disposed below the connecting pipe 102, so that, in operation, the sprayed water is conveniently filtered and recycled.

In the above embodiment, the return pump 106 is disposed below the inside of the wind inlet box 101, and the water flow pipe 105 is communicated with the water injection box 111, so that the return pump 106 can be driven to cooperate with the water flow pipe 105 to recover the filtered water, thereby facilitating the reuse.

In the above embodiment, specifically, a plurality of transverse pipes 115 are arranged at the front end of the water pipe 114, and a plurality of spray heads 117 are arranged at the front end of the transverse pipes 115, so that when the dust-settling humidifying device is used, water can be sprayed more uniformly, and thus dust-settling and humidifying operations can be performed on fresh air, and further functionality is increased.

In the above embodiment, specifically, one end of the water delivery pump 113 is connected to the water injection tank 111, and the other end is connected to the transverse pipe 115, so as to facilitate water delivery, and thus spraying and using are performed.

In the above embodiment, specifically, the water injection tank 111 is a stainless steel tank, and the first heating pipe 112 is disposed inside the sprinkler head 117, so as to heat water inside the water injection tank 111, thereby spraying hot water.

In the above embodiment, specifically, the left side of the liquid storage tank 121 is connected to the injection hopper 123 through the injection pipe 122, and the second heating pipe 127 is disposed inside the liquid storage tank 121, so that the traditional Chinese medicine disinfectant and water for green grass can be stored conveniently during use, and thus the disinfectant and water are heated and generate hot steam for use.

In the above embodiment, specifically, the stirring shaft 125 and the stirring blade 126 on the output shaft of the stirring motor 124 are disposed in the liquid storage tank 121, so as to facilitate mixing and stirring after the liquid is injected.

In the above embodiment, specifically, the second fan 1285 is connected with the liquid storage tank 121 through the lower steam pipe 1286, and the second fan 1285 is connected with the connection box 1283, so that hot steam in the liquid storage tank 121 can be conveniently conveyed to enter the main sterilizing tank 1281, thereby sterilizing air and increasing functionality.

In the above embodiment, specifically, the shunt head 1284 at the right end of the connecting box 1283 is set to be conical, the shunt head 1284 adopts a stainless steel head, and the shunt head 1284 is internally provided with a through hole, so that the steam can be dispersed and enter the main disinfection box 1281 conveniently, and then convects with the fresh air entering the main disinfection box 1281, thereby better performing the disinfection work.

In the above embodiment, specifically, the left and right sides inside the main disinfection box 1281 are provided with through holes, and a pipeline is arranged between the right side of the main disinfection box 1281 and the working box 1, so that the main disinfection box 1281 can be conveniently matched to communicate, and air intake and exhaust work can be performed.

In the above embodiment, the first fan 7 is a WF-ZY fan.

In the above embodiment, specifically, the PLC8 is a PLC of model FX 2N-48.

In the above embodiment, specifically, the reflux pump 106 is a water pump with a model number of DC48V 60V.

In the above embodiment, specifically, the first heating pipe 112 is a heating pipe with a model number of GKFLG-15.

In the above embodiment, the water pump 113 is a JET type water pump.

In the above embodiment, the stirring motor 124 is a 5IK90RGN-CF/5GN50K motor.

In the above embodiment, the second heating pipe 127 is a heating pipe with a model number of GKFLG-15.

In the above embodiment, specifically, the second fan 1285 is an SFWL4-4 fan.

In the above embodiment, specifically, the driving switch 9 is electrically connected to an input terminal of the PLC8, the first fan 7 is electrically connected to an output terminal of the PLC8, the reflux pump 106 is electrically connected to an output terminal of the PLC8, the first heating pipe 112 is electrically connected to an output terminal of the PLC8, the water pump 113 is electrically connected to an output terminal of the PLC8, the stirring motor 124 is electrically connected to an output terminal of the PLC8, the second heating pipe 127 is electrically connected to an output terminal of the PLC8, and the second fan 1285 is electrically connected to an output terminal of the PLC 8.

Principle of operation

The working principle of the invention is as follows: before use, water is filled into a water injection tank 111, then a first heating pipe 112 is driven to heat the water in the water injection tank 111 to a proper temperature, while the water is in operation, green grass traditional Chinese medicine disinfectant and water are injected into a liquid storage tank 121 through an injection hopper 123 and an injection pipe 122, then a stirring motor 124 is driven to drive a stirring shaft 125 and stirring blades 126 to rotate and mix, after the operation is completed, a second heating pipe 127 is driven to enable the liquid in the liquid storage tank 121 to generate gas, after the operation before use is completed, a first fan 7 is driven to enable fresh air to enter an air inlet tank 101 through a connecting pipeline 102, a water delivery pump 113 is driven to enable the water in the water injection tank 111 to reach transverse pipes 115 and longitudinal pipes 116 through a water delivery pipe 114 and then to be sprayed into the air inlet tank 101 through a spray head 117, thereby performing dust fall humidification on the fresh air, then the fresh air reaches a tank cavity 2 through the first fan 7, and the used water reaches the bottom of the air inlet tank 101 through a first water filtering net 103 and a second water filtering net, then, the reflux pump 106 is driven to cooperate with the water flow pipe 105 to inject water into the water injection tank 111 for reuse, wind reaching the tank cavity 2 is filtered again through the filter screen 5 and then reaches the disinfection main tank 1281, the wind enters the disinfection main tank and then drives the second fan 1285 to enable the steam in the liquid storage tank 121 to pass through the lower steam transmission pipe 1286, the upper steam transmission pipe 1282 and the connecting box 1283 and then to be blown out from the flow dividing head 1284, so that the steam and fresh air are convected and disinfected, and finally, the fresh air passes through the disinfection main tank 1281 and enters the central air conditioner, so that the work can be completed.

The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.

Claims

1. The fresh air purification equipment of the centralized central air conditioner is characterized by comprising a working box (1), a box cavity (2), a T-shaped cover plate (3), a hasp (4), a filter screen (5), a sealing rubber pad (6), a first fan (7), a PLC (8), a driving switch (9), a spraying dust-settling humidification box structure (10), a water storage heating spraying frame structure (11) and an air disinfection box structure (12), wherein the box cavity (2) is arranged in the middle of the inside of the working box (1); the T-shaped cover plate (3) is inserted into the left side above the inner part of the working box (1); the hasps (4) are respectively installed on the left side and the right side of the upper surface of the T-shaped cover plate (3) and the left side and the middle left side of the upper surface of the working box (1) through bolts; the filter screen (5) is arranged in the middle of the lower surface of the T-shaped cover plate (3) through bolts; the sealing rubber pad (6) is arranged on the left side of the lower part of the inner wall of the box cavity (2) through a screw; the first fan (7) is mounted on the right side of the inner wall of the box cavity (2) through bolts; the PLC (8) is arranged at the right upper part of the front surface of the working box (1) through a bolt, and the front surface of the PLC (8) is electrically connected with a driving switch (9); the spraying dust-settling humidifying box structure (10) is arranged at the right end of the working box (1); the water storage heating spraying frame structure (11) is arranged at the front end of the spraying dust-settling humidifying box structure (10); the air sterilizing box structure (12) is arranged at the left end of the working box (1); the spraying dust-settling humidification box structure (10) comprises an air inlet box (101), a connecting pipeline (102), a first water filter screen (103), a second water filter screen (104), a water flow pipe (105), a reflux pump (106) and a discharge valve (107), wherein the connecting pipeline (102) is welded on the upper parts of the left end and the right end of the air inlet box (101), and the left end of the connecting pipeline (102) is in bolted connection with a first fan (7); the first water filter screen (103) and the second water filter screen (104) are respectively installed on the lower part of the inner wall of the air inlet box (101) through bolts; one end of the water flow pipe (105) is in threaded connection with the reflux pump (106), and the other end of the water flow pipe penetrates through the lower part of the front side inside the air inlet box (101); the reflux pump (106) is arranged on the right side inside the air inlet box (101); the discharge valve (107) is mounted at the lower part of the left side in the air inlet box (101) through bolts; the water storage heating spray rack structure (11) comprises a water injection tank (111), a first heating pipe (112), a water delivery pump (113), a water delivery pipe (114), a transverse pipe (115), a longitudinal pipe (116) and a spray head (117), wherein the water injection tank (111) is welded at the lower part of the front end of the air inlet tank (101), and a water flow pipe (105) is embedded in the rear side inside the water injection tank (111); the first heating pipe (112) is mounted at the right lower side inside the water injection tank (111) through bolts; the rear end of the water delivery pump (113) is in threaded connection with the left lower part of the front end of the water injection tank (111); one end of the water conveying pipe (114) is in threaded connection with the upper end of the water conveying pump (113), and the other end of the water conveying pipe is embedded into the front end of the transverse pipe (115); the transverse pipe (115) is welded on the rear side of the upper part of the inner wall of the air inlet box (101); the longitudinal pipes (116) are respectively welded between the front ends of the transverse pipes (115) and the front side of the upper part of the inner wall of the air inlet box (101); the sprinkler head (117) is screwed to the lower end of the longitudinal pipe (116).

2. The fresh air purification equipment of the centralized central air conditioner as claimed in claim 1, wherein the air disinfection box structure (12) comprises a liquid storage box (121), an injection pipe (122), an injection hopper (123), a stirring motor (124), a stirring shaft (125), a stirring blade (126), a second heating pipe (127) and an air inlet disinfection box structure (128), the injection pipe (122) is welded on the upper part of the left end of the liquid storage box (121), and the injection hopper (123) is welded on the upper end of the injection pipe (122); the stirring motor (124) is arranged on the left side of the upper end of the liquid storage tank (121) through a bolt; one end of the stirring shaft (125) is connected with an output shaft coupling of the stirring motor (124); the stirring blades (126) are respectively welded at the left side and the right side of the stirring shaft (125); the second heating pipe (127) is embedded in the left lower side inside the liquid storage tank (121); the steam inlet sterilizing box structure (128) is arranged at the left ends of the liquid storage box (121) and the working box (1).

3. The fresh air purification equipment of the centralized central air conditioner as claimed in claim 1, wherein the steam inlet disinfection box structure (128) comprises a disinfection main box (1281), an upper steam transmission pipe (1282), a connecting box (1283), a diverter head (1284), a second fan (1285) and a lower steam transmission pipe (1286), and the disinfection main box (1281) is welded at the left end of the working box (1); the upper end of the upper steam transmission pipe (1282) penetrates through the main disinfection box (1281) and is welded at the front end of the connecting box (1283); the lower end of the upper steam transmission pipe (1282) is connected with a second fan (1285) through a bolt; the shunting head (1284) is arranged at the right end of the connecting box (1283) by bolts; one end of the lower steam transmission pipe (1286) is connected with the second fan (1285) through a bolt, and the other end of the lower steam transmission pipe is welded on the right side of the upper end of the liquid storage tank (121).

4. The fresh air purification equipment of centralized central air conditioner as claimed in claim 1, wherein the first water filter (103) and the second water filter (104) are respectively activated carbon and PE, and the first water filter (103) and the second water filter (104) are arranged below the connecting pipe (102).

5. The central air-conditioning fresh air purification device as claimed in claim 1, characterized in that the return pump (106) is arranged below the interior of the air inlet box (101), and the water flow pipe (105) is communicated with the water injection box (111).

6. The central air-conditioning fresh air purification device according to claim 1, wherein a plurality of transverse pipes (115) are arranged at the front end of the water pipe (114), and a plurality of spray heads (117) are arranged at the front end of the transverse pipes (115).

7. The fresh air purification equipment of centralized central air-conditioning as described in claim 1, wherein one end of said water pump (113) is connected to said water tank (111) and the other end is connected to said transverse pipe (115).

8. The fresh air purification equipment of centralized central air conditioner as claimed in claim 1, wherein the water injection tank (111) is a stainless steel tank, and the spray head (117) is internally provided with a first heating pipe (112).

9. The fresh air purification equipment of the centralized central air conditioner as claimed in claim 2, wherein the left side of the liquid storage tank (121) is connected with an injection hopper (123) through an injection pipe (122), and a second heating pipe (127) is arranged inside the liquid storage tank (121).

10. The fresh air purification equipment of centralized central air-conditioner according to claim 3, wherein the second fan (1285) is connected to the tank (121) through the lower steam pipe (1286), and the second fan (1285) is connected to the connection box (1283).