Indoor air disinfection system using irradiation technology and use method thereof

Abstract

The present invention discloses an indoor air disinfection system using irradiation technology and a method for using the system. The system comprises a U-shaped tube and an irradiation device, wherein the U-shaped tube can draw indoor air into the tube and return it to the indoor space. The U-shaped tube is also embedded with an irradiation device, and the irradiation device comprises at least an electron accelerator, a bypass tube and an ozone adsorption catalytic device. The ozone adsorption catalytic device is arranged in the U-shaped tube and is used to treat the sterilized gas; the bypass tube is U-shaped and is connected in parallel at both ends of the ozone adsorption catalytic device. When there are people in the room, valve two is closed to allow the sterilized air to enter the ozone adsorption catalytic device to reduce the ozone content. When there are no people in the room, valve two is opened to allow the sterilized air to directly enter the outlet pipe from the bypass tube, thereby avoiding the ozone adsorption catalytic device and enhancing the sterilization effect.

Description

Technical Field

[0001] The present invention relates to the technical field of air treatment, in particular to an indoor air disinfection system using irradiation technology and a method for using the same. Background Art

[0002] With the improvement of living standards, people are paying more and more attention to indoor air conditions. Indoor environmental pollution often leads to increased social costs and a decline in human health. At this time, people often use air purifiers to purify the air. They can also disinfect the air through ultraviolet sterilization or install ozone generators. It should be noted that when using ultraviolet rays or ozone generators, people must leave the room, otherwise it will cause damage to people's eyes and skin while disinfecting.

[0003] In addition, the efficiency and effect of using irradiation technology to treat air are relatively high, but there are currently few devices that use irradiation technology to treat indoor air, and the indoor air disinfection system using irradiation technology is not perfect enough, and cannot cope with multiple scenarios or handle multiple indoor air conditions.

[0004] Therefore, those skilled in the art provide an indoor air disinfection system using irradiation technology and a method of using the same to solve the problems raised in the above background technology. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solutions: an indoor air disinfection system using irradiation technology, comprising a U-shaped tube and an irradiation device, wherein the U-shaped tube is capable of sucking indoor air into the tube and returning it to the indoor space; the U-shaped tube is further embedded with the irradiation device, and the irradiation device includes at least an electron accelerator, which is capable of using an electron beam to irradiate the gas flowing under the disinfection beam;

[0006] It also includes a bypass pipe and an ozone adsorption catalytic device, wherein the ozone adsorption catalytic device is arranged in the U-shaped tube and is used to process the sterilized gas;

[0007] The bypass pipe is U-shaped and connected in parallel to both ends of the ozone adsorption catalytic device. A second valve is also provided on the bypass pipe. Opening the second valve can change the gas path so that the gas avoids the ozone adsorption catalytic device.

[0008] Furthermore, preferably, the U-shaped tube includes an air inlet pipe, a connecting pipe and an air outlet pipe which are connected in sequence, and a fan is provided on the connecting pipe to draw air from the room through the air inlet pipe, the connecting pipe and the air outlet pipe in sequence and return it to the indoor space, and the ozone adsorption catalytic device is detachably embedded in the connecting pipe, and the ozone adsorption catalytic device includes an ozone catalyst and activated carbon.

[0009] Furthermore, preferably, the diameter of the middle section of the air inlet pipe gradually increases and gradually decreases to an initial state after extending for a certain distance, thereby forming a reducing pipe, and the output end of the irradiation device is embedded in the reducing pipe.

[0010] Furthermore, preferably, the electron beam energy range of the electron accelerator is 0.1keV-10MeV; the absorbed dose range of the sterilized gas is 0-50kGy.

[0011] Furthermore, as a preference, a protective device is also included, wherein when the energy of the electron beam is 0.1keV-1.0MeV, the electron irradiation accelerator uses its own shielding system as a protective device, and when the energy of the electron beam is higher than 1.0MeV, a cement shielding room is used as a protective device.

[0012] Furthermore, as a preference, a valve 1 is also provided on the air inlet pipe, and the valve 1 is provided on the left side of the reducer. The left side of the valve 1 is also connected to the gas regulating assembly by a transfer tube. Closing the valve 1 can change the gas path so that the gas passes through the gas regulating assembly and enters the reducer from bottom to top. A guide plate is also fixed on the right side of the interior of the reducer, and the guide plate can block the bottom of the reducer, so that the gas flows from a position close to the irradiation device to the connecting pipe.

[0013] Further, as a preference, the gas regulating assembly comprises an arc-shaped bottom groove, an arc-shaped top groove, and a guide vane, wherein the openings of the arc-shaped bottom groove and the arc-shaped top groove are both provided with folded edges, and the arc-shaped bottom groove can form a sealed cavity with the arc-shaped top groove;

[0014] The bottom of the sealed cavity is connected to the transfer tube, and a breathable mounting seat, a filter screen and a water-absorbing sponge column are also provided in the sealed cavity, wherein the breathable mounting seat is attached to the inner wall of the arc-shaped top groove, and the filter screen is attached to the inner wall of the breathable mounting seat. The inner wall of the breathable mounting seat is provided with a plurality of grooves along a circumferential array for inserting the water-absorbing sponge column, and the openings of the breathable mounting seat and the filter screen are both provided with folded edges;

[0015] The sealing cavity is half-embedded in the reducer;

[0016] An air outlet is also provided on the top of the sealed cavity.

[0017] Further, as a preference, the arc-shaped bottom groove is fixed to the arc-shaped top groove by bolts, and the arc-shaped top groove is fixedly half-embedded in the reducer, and the folded edges of the arc-shaped bottom groove and the arc-shaped top groove are both provided with stepped grooves, thereby forming a placement groove for plugging the ventilating mounting seat and the folded edge of the filter screen;

[0018] A plurality of guide vanes arranged in a circumferential pattern are rotatably disposed in the sealing cavity. The guide vanes are in close contact with the inner wall of the filter screen, and a gap is left between the guide vanes and the inner wall of the arc-shaped bottom groove.

[0019] The air outlet includes air outlet 1 and air outlet 2. A buffer groove is provided at the top of the arc-shaped top groove. Air outlet 1 is opened at the bottom of the buffer groove, and air outlet 2 is opened at the top of the buffer groove, so that the gas from the transfer tube can pass through the sealed cavity, air outlet 1, the buffer groove and air outlet 2 in sequence and rise to the reducing tube.

[0020] A method for using an indoor air disinfection system using irradiation technology comprises the following steps:

[0021] S1. Turn on the fan and valve 1, allowing indoor air to be drawn into the air inlet pipe and then processed by the irradiation device through the reducer.

[0022] S2. If there are people in the room, close valve 2 to allow the disinfected air to enter the ozone adsorption catalytic device, reducing the ozone content;

[0023] When there is no one in the room, open valve 2 to allow the sterilized air to directly enter the outlet pipe from the bypass pipe, thereby avoiding the ozone adsorption catalytic device and enhancing the sterilization effect.

[0024] Furthermore, as a preference, in S1, when it is necessary to pre-treat the indoor air, valve 1 is closed, so that the air is pre-treated by the gas regulating component and enters the reducer from bottom to top.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. Two bypasses are provided in this application, which can cope with a variety of scenarios and can handle a variety of indoor air conditions. When there are people in the room, valve two is closed to allow the disinfected air to enter the ozone adsorption catalytic device, reducing the ozone content and preventing people from being harmed; when there are no people in the room, valve two is opened to allow the disinfected air to enter the outlet pipe directly from the bypass pipe, thereby avoiding the ozone adsorption catalytic device. The excess ozone can effectively kill microorganisms, bacteria or viruses in the air, thereby enhancing the sterilization effect.

[0027] 2. In this application, a reducing pipe with a larger diameter is provided on the air inlet pipe, which reduces the air flow rate, increases the irradiation time, and makes the sterilization more thorough.

[0028] 3. In the present application, closing the valve 1 can change the gas path so that the gas passes through the gas regulating assembly and enters the reducer from bottom to top. A guide plate is also fixed on the right side of the reducer. The guide plate can block the bottom of the reducer, so that the gas flows from a position close to the irradiation device to the connecting pipe, so that all the gas passes through the top layer and receives the maximum amount of irradiation, making the sterilization more thorough.

[0029] 4. The arc-shaped bottom groove in the gas regulating assembly is fixed to the arc-shaped top groove with bolts, and the arc-shaped top groove is fixed and half-embedded in the reducer, so that the arc-shaped bottom groove and the arc-shaped top groove can be disassembled and assembled on the reducer as a whole, which is convenient for subsequent maintenance and replacement of related wearing parts. In addition, the folding edges of the arc-shaped bottom groove and the arc-shaped top groove are provided with stepped grooves to form a placement groove for plugging the breathable mounting seat and the folding edge of the filter screen, which is convenient for the subsequent replacement of the filter screen and the absorbent cotton column.

[0030] 5. The multiple guide vanes provided in the gas regulating assembly can form multiple variable spaces between the sealed cavity, and a gap is left between the guide vanes and the inner wall of the arc-shaped bottom groove. This design allows the gas from the transfer tube to quickly enter the multiple variable spaces, and the guide vanes are tightly attached to the inner wall of the filter. Therefore, during the rotation of the guide vanes, the dust on the surface of the filter is cleaned in real time to prevent blockage and poor air circulation, thereby reducing processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of an indoor air disinfection system using irradiation technology and its use method;

[0032] Figure 2 A partially enlarged schematic diagram of an indoor air disinfection system using irradiation technology and a method of using the same;

[0033] Figure 3 A schematic diagram of the structure of a gas regulating component in an indoor air disinfection system using irradiation technology and a method of using the same;

[0034] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A;

[0035] In the figure: 1. Air inlet pipe; 2. Connecting pipe; 3. Air outlet pipe; 4. Fan; 5. Reducer; 6. Irradiation device; 7. Valve 1; 8. Gas regulating assembly; 9. Bypass pipe; 10. Valve 2; 11. Ozone adsorption catalytic device; 12. Cement shielding room; 13. Transfer pipe; 15. Guide plate; 81. Arc-shaped bottom groove; 82. Arc-shaped top groove; 83. Buffer groove; 84. Air outlet 1; 85. Air outlet 2; 86. Breathable mounting seat; 87. Filter; 88. Water-absorbing cotton column; 89. Guide vane; 810. Placement groove. DETAILED DESCRIPTION

[0036] See also Figures 1 to 4 In the embodiments of the present invention, the principle of irradiation sterilization is as follows: air enters through the inlet and passes through the irradiation device, carrying a large number of electrons, positive ions, excited atoms, and free radicals (·H, ·OH, O+, H2O+). When microorganisms are irradiated, both direct and indirect effects occur. The direct action theory believes that the cell nucleus, especially the DNA, is directly hit, leading to death; the indirect action theory believes that the cell contains a large amount of water. After the water absorbs radiation energy, a radiation chemical reaction occurs, and the active particles such as H+ and OH- produced react with life substances (proteins, enzymes), causing changes in the structure or substances necessary for cell life, thereby causing cell death; at the same time, free radicals are generated, which can produce an oxidation reaction with sulfur dioxide and nitrogen dioxide. The ozone produced during the reaction can be adsorbed by an activated carbon adsorption device with a transition metal catalyst (adsorbed and decomposed into oxygen), and the clean air can finally be output through a fan. In an embodiment of the present invention, an indoor air disinfection system using irradiation technology includes a U-shaped tube and an irradiation device 6, wherein the U-shaped tube can suck indoor air into the tube and return it to the indoor space. The U-shaped tube is also embedded with an irradiation device 6, and the irradiation device 6 includes at least an electron accelerator, which can use an electron beam to irradiate the gas flowing under the disinfection beam;

[0037] It also includes a bypass pipe 9 and an ozone adsorption catalytic device 11, wherein the ozone adsorption catalytic device 11 is arranged in the U-shaped tube and is used to process the sterilized gas;

[0038] The bypass pipe 9 is U-shaped and connected in parallel to both ends of the ozone adsorption catalytic device 11 . A second valve 10 is also provided on the bypass pipe 9 . Opening the second valve 10 can change the gas path so that the gas avoids the ozone adsorption catalytic device 11 .

[0039] As a preferred embodiment, the U-shaped tube includes an air inlet pipe 1, a connecting pipe 2 and an air outlet pipe 3 connected in sequence. The connecting pipe 2 is provided with a fan 4 to draw air from the room through the air inlet pipe 1, the connecting pipe 2 and the air outlet pipe 3 in sequence and return it to the indoor space. The ozone adsorption catalytic device 11 is detachably embedded in the connecting pipe 2, and the ozone adsorption catalytic device 11 includes an ozone catalyst and activated carbon, wherein the ozone catalyst is a transition metal oxide, including Fe2O3, Co3O4, etc.

[0040] like Figure 1 and Figure 2 The diameter of the middle section of the air inlet pipe 1 gradually increases and gradually decreases to the initial state after extending for a distance, thereby forming a reducer 5. The output end of the irradiation device 6 is embedded in the reducer 5. The setting of the reducer 5 is equivalent to increasing the diameter of the air inlet pipe 1, reducing the air flow rate, and increasing the irradiation time, making the sterilization more thorough.

[0041] As a preferred embodiment, the energy range of the electron beam irradiated by the electron accelerator is 0.1keV-10MeV; the absorbed dose range of the sterilized gas is 0-50kGy.

[0042] In addition, a protective device is required to be provided in this device to protect personnel. When the energy of the electron beam is 0.1keV-1.0MeV, the electron irradiation accelerator uses its own shielding system as a protective device. When the energy of the electron beam is higher than 1.0MeV, a cement shielding room 12 is used as a protective device. The cement shielding room shields the entire device, leaving only the air inlet end of the air inlet pipe and the air outlet end of the air outlet pipe.

[0043] like Figure 2-4 The air inlet pipe 1 is also provided with a valve 7, which is arranged on the left side of the reducer 5. The left side of the valve 7 is also connected to the gas regulating component 8 by a transfer tube 13. Closing the valve 7 can change the gas path so that the gas passes through the gas regulating component 8 and enters the reducer 5 from bottom to top. A guide plate 15 is also fixed on the right side of the inside of the reducer 5. The guide plate 15 can block the bottom of the reducer 5, so that the gas flows from a position close to the irradiation device 6 to the connecting pipe 2, so that all the gas passes through the top layer and receives the maximum amount of irradiation, making the sterilization more thorough.

[0044] In this embodiment, the gas regulating assembly 8 includes an arc-shaped bottom groove 81, an arc-shaped top groove 82, and a guide vane 89, wherein the openings of the arc-shaped bottom groove 81 and the arc-shaped top groove 82 are both provided with folded edges, and the arc-shaped bottom groove 81 can form a sealed cavity with the arc-shaped top groove 82;

[0045] The bottom of the sealed cavity is connected to the transfer tube 13. A breathable mounting seat 86, a filter screen 87, and a water-absorbing sponge column 88 are also provided in the sealed cavity. The breathable mounting seat 86 is attached to the inner wall of the arc-shaped top groove 82, and the filter screen 87 is attached to the inner wall of the breathable mounting seat 86. The inner wall of the breathable mounting seat 86 is provided with a plurality of grooves along a circumferential array for inserting the water-absorbing sponge column 88. The openings of the breathable mounting seat 86 and the filter screen 87 are both provided with folded edges.

[0046] The sealing cavity is half embedded in the reducing tube 5;

[0047] An air outlet is also provided on the top of the sealed cavity.

[0048] In this embodiment, the arc-shaped bottom groove 81 is fixed to the arc-shaped top groove 82 by bolts, and the arc-shaped top groove 82 is fixed and half-embedded in the reducer 5, so that the arc-shaped bottom groove and the arc-shaped top groove can be disassembled and assembled on the reducer 5 as a whole, which is convenient for subsequent maintenance and replacement of related wearing parts. The folded edges of the arc-shaped bottom groove 81 and the arc-shaped top groove 82 are both provided with stepped grooves, thereby forming a placement groove 810 for plugging the ventilating mounting seat 86 and the folded edges of the filter screen 87, so as to facilitate the subsequent replacement of the filter screen and the absorbent cotton column.

[0049] The sealed cavity is also rotatably provided with a plurality of guide vanes 89 arranged in a circular pattern. The guide vanes 89 can be driven to rotate by an external motor, which will not be described in detail here. The guide vanes 89 are in close contact with the inner wall of the filter screen 87, and a gap is left between the guide vanes 89 and the inner wall of the arc-shaped bottom groove 81. The plurality of guide vanes provided can form a plurality of variable spaces between the sealed cavity, and a gap is left between the guide vanes 89 and the inner wall of the arc-shaped bottom groove 81. Such a design allows the gas from the transfer tube 13 to quickly enter the plurality of variable spaces, and the guide vanes 89 are in close contact with the inner wall of the filter screen 87. Therefore, during the rotation of the guide vanes 89, the dust on the surface of the filter screen 87 is cleaned in real time to prevent blockage causing poor air circulation and reduced processing efficiency.

[0050] The air outlet includes air outlet 1 84 and air outlet 2 85. A buffer groove 83 is provided at the top of the arc-shaped top groove 82. The air outlet 1 84 is opened at the bottom of the buffer groove 3, and the air outlet 2 85 is opened at the top of the buffer groove 3, so that the gas from the transfer tube 13 can pass through the sealed cavity, air outlet 1 84, the buffer groove 83 and air outlet 2 85 in sequence and rise to the reducer 5.

[0051] A method for using an indoor air disinfection system using irradiation technology comprises the following steps:

[0052] S1. Open the fan 4 and valve 7, so that the indoor air is sucked into the air inlet pipe 1, and through the reducer 5 is treated by the irradiation device;

[0053] S2. In the case of people in the room, close valve 10, so that the disinfected air enters the ozone adsorption catalytic device 11, reducing the ozone content;

[0054] When there is no one in the room, open valve 2 10 to allow the sterilized air to enter the outlet pipe 3 directly from the bypass pipe 9, thereby avoiding the ozone adsorption catalytic device 11. The excess ozone can effectively kill microorganisms, bacteria or viruses in the air, thereby enhancing the sterilization effect.

[0055] In S1, when the indoor air needs to be pre-treated, valve 1 7 is closed, so that the air is pre-treated by the gas regulating component 8 and enters the reducing pipe 5 from bottom to top.

[0056] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An indoor air disinfection system using irradiation technology, comprising a U-shaped tube and an irradiation device, wherein: The U-shaped tube is capable of sucking indoor air into the tube and returning it to the indoor space, and is characterized in that an irradiation device is also embedded in the U-shaped tube, and the irradiation device at least includes an electron accelerator, and the electron accelerator is capable of using an electron beam to irradiate the gas flowing under the disinfection beam; It also includes a bypass pipe and an ozone adsorption catalytic device, wherein the ozone adsorption catalytic device is arranged in the U-shaped tube and is used to process the sterilized gas; The bypass pipe is U-shaped and connected in parallel to both ends of the ozone adsorption catalytic device. A second valve is provided on the bypass pipe. Opening the second valve can change the gas path so that the gas avoids the ozone adsorption catalytic device. The U-shaped tube includes an air inlet pipe, a connecting pipe and an air outlet pipe which are connected in sequence; The diameter of the middle section of the air inlet pipe gradually increases and gradually decreases to the initial state after extending for a distance, thereby forming a reducing pipe, and the output end of the irradiation device is embedded in the reducing pipe; The air inlet pipe is further provided with a valve 1, which is arranged on the left side of the reducer, and the left side of the valve 1 is also connected to the gas regulating component through a transfer tube; The gas regulating assembly includes an arc-shaped bottom groove, an arc-shaped top groove, and a guide vane, wherein the openings of the arc-shaped bottom groove and the arc-shaped top groove are both provided with folded edges, and the arc-shaped bottom groove and the arc-shaped top groove can form a sealed cavity; The bottom of the sealed cavity is connected to the transfer tube, and a breathable mounting seat, a filter screen and a water-absorbing sponge column are also provided in the sealed cavity, wherein the breathable mounting seat is attached to the inner wall of the arc-shaped top groove, and the filter screen is attached to the inner wall of the breathable mounting seat. The inner wall of the breathable mounting seat is provided with a plurality of grooves along a circumferential array for inserting the water-absorbing sponge column, and the openings of the breathable mounting seat and the filter screen are both provided with folded edges; The sealing cavity is half-embedded in the reducer; The top of the sealed cavity is also provided with an air outlet; A plurality of guide vanes arranged in a circumferential pattern are rotatably provided in the sealing cavity. The guide vanes are in close contact with the inner wall of the filter screen and a gap is left between the guide vanes and the inner wall of the arc-shaped bottom groove.

2. The indoor air disinfection system using irradiation technology according to claim 1, characterized in that: A fan is provided on the connecting pipe to draw air from the room through the air inlet pipe, the connecting pipe and the air outlet pipe in sequence and return it to the indoor space. The ozone adsorption catalytic device is detachably embedded in the connecting pipe, and the ozone adsorption catalytic device includes an ozone catalyst and activated carbon.

3. The indoor air disinfection system using irradiation technology according to claim 1, characterized in that: The energy range of the electron beam irradiated by the electron accelerator is 0.1keV-10MeV; the absorbed dose range of the sterilized gas is 0-50kGy.

4. The indoor air disinfection system using irradiation technology according to claim 3, characterized in that: It also includes a protective device. When the energy of the electron beam is 0.1keV-1.0MeV, the electron irradiation accelerator uses its own shielding system as a protective device. When the energy of the electron beam is higher than 1.0MeV, a cement shielding room is used as a protective device.

5. The indoor air disinfection system using irradiation technology according to claim 1, characterized in that: Closing the valve can change the gas path so that it passes through the gas regulating assembly and enters the reducer from bottom to top. A guide plate is also fixed on the right side of the reducer, which can block the bottom of the reducer, so that the gas flows from a position close to the irradiation device to the connecting pipe.

6. The indoor air disinfection system using irradiation technology according to claim 1, characterized in that: The arc-shaped bottom groove is fixed to the arc-shaped top groove by bolts, and the arc-shaped top groove is fixed and half-embedded in the reducer. The folded edges of the arc-shaped bottom groove and the arc-shaped top groove are both provided with stepped grooves, thereby forming a placement groove for plugging the ventilating mounting seat and the folded edge of the filter screen; The air outlet includes air outlet 1 and air outlet 2. A buffer groove is provided at the top of the arc-shaped top groove. Air outlet 1 is opened at the bottom of the buffer groove, and air outlet 2 is opened at the top of the buffer groove, so that the gas from the transfer tube can pass through the sealed cavity, air outlet 1, the buffer groove and air outlet 2 in sequence and rise to the reducing tube.

7. A method for using an indoor air disinfection system using irradiation technology, which uses the indoor air disinfection system using irradiation technology as claimed in claim 2, characterized in that: It includes the following steps: S1. Turn on the fan and valve 1, allowing indoor air to be drawn into the air inlet pipe and then processed by the irradiation device through the reducer. S2. If there are people in the room, close valve 2 to allow the disinfected air to enter the ozone adsorption catalytic device, reducing the ozone content; When there is no one in the room, open valve 2 to allow the sterilized air to directly enter the outlet pipe from the bypass pipe, thereby avoiding the ozone adsorption catalytic device and enhancing the sterilization effect.

8. The method for using the indoor air disinfection system using irradiation technology according to claim 7, characterized in that: In S1, when the indoor air needs to be pre-treated, valve 1 is closed, so that the air is pre-treated by the gas regulating component and enters the reducer from bottom to top.

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