CN210891987U

CN210891987U - Air conditioning unit capable of killing virus and bacteria

Info

Publication number: CN210891987U
Application number: CN202020453036.6U
Authority: CN
Inventors: 殷平; 刘敏
Original assignee: Jiangsu Greensman Energy Storage Technology Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-06-30
Anticipated expiration: 2030-04-01

Abstract

The utility model discloses an air conditioning unit that can kill virus and bacterium contains box, first air cleaner, heat exchanger, high pressure low temperature plasma, second air cleaner, ozone filter and fan device, and first air cleaner, heat exchanger, high pressure low temperature plasma, second air cleaner, ozone filter and fan device set gradually in the box from left to right, and wherein, first air cleaner adopts electret electrostatic air filtration material, and second air cleaner adopts polyamide base N-halamine nanofiber membrane filtration material. The utility model discloses make air conditioning unit's filtration and the range of application of killing virus and bacterium expand greatly to reduce the energy consumption of device, and can clear away virus and bacterium in the air, and harmful gas, make virus, bacterium, dust and harmful gas's concentration control in the air at the national standard within range.

Description

Air conditioning unit capable of killing virus and bacteria

Technical Field

The utility model relates to an air conditioning unit, especially an air conditioning unit that can kill virus and bacterium belongs to air conditioning and clarification plant field.

Background

In the spreading period of the new coronary pneumonia epidemic situation, in order to prevent the spread and the mutual infection of viruses, not only hospitals and centralized air conditioning systems of public buildings including the new use are required to close air return systems, but also direct current systems of all fresh air can be adopted, and the measures are adopted, so that the energy consumption of the air conditioning systems is increased greatly, and the indoor temperature is difficult to meet the requirements. Air purification equipment of hospital at present mainly adopts: 1) a coarse-effect air filter; 2) a medium efficiency air filter; 3) a sub-high efficiency air filter. Wherein the filtering material that coarse effect and medium-efficient air cleaner adopted is ordinary non-woven fabrics, and what sub-high-efficient air cleaner adopted is paper, and these three kinds of air cleaner's shortcoming is: 1) the efficiency is low; 2) the resistance is large; 3) cannot be cleaned and reused after pollution; 4) substantially no decontamination effect on bacteria, especially viruses; 5) harmful gas and peculiar smell cannot be removed.

Chinese patent CN 201310178793.1 "a device for filtering, sterilizing and eliminating harmful gases" adopts electret electrostatic air filtering material, i.e. the melt-blown electrostatic non-woven fabric widely used in N95 mask at present replaces the traditional non-woven fabric and paper. The electret electrostatic air filter material is electrostatic polypropylene fiber, the filter efficiency of the electret electrostatic air filter material to the particle size of more than 0.5 mu m can reach more than 95% when the wind speed is low, the intercepted pollutants are attached to the surface, and therefore the filter can intercept most of bacteria, viruses or other pollutants, but the melt-blown non-woven fabric has the greatest defects that the filter cannot be washed by water, the filter efficiency is reduced once the filter material is wet, and the electric charge on the fiber is gradually weakened along with time, which is fully reflected in the use of the mask. It is therefore important to find new filter materials. At present, the air purification of hospitals and public buildings mainly aims at removing particulate matters and gaseous pollutants in air, and does not consider the purification of viruses and bacteria, so the leakage rate of the air purification device only needs to be controlled within the limit range of relevant national standards, if the purified objects comprise viruses and bacteria, secondary pollution can occur when leakage occurs, and therefore, the air purification device for hospitals must consider the condition that when the aerosols in the air purified by the air purification device carry the viruses and the bacteria, and the air purification device must have zero leakage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an air conditioning unit that can kill virus and bacterium is provided, realizes killing of virus and bacterium to sealed respond well.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

an air conditioning unit capable of killing viruses and bacteria is characterized in that: the air purifier comprises a box body, a first air filter, a heat exchanger, a high-pressure low-temperature plasma, a second air filter, an ozone filter and a fan device, wherein the first air filter, the heat exchanger, the high-pressure low-temperature plasma, the second air filter, the ozone filter and the fan device are sequentially arranged in the box body from left to right, the first air filter adopts electret electrostatic air filtering materials, and the second air filter adopts polyamide-based N-halamine nanofiber membrane filtering materials.

Further, the left end of box is provided with the air inlet, and the right-hand member of box is provided with the gas outlet, all is provided with the grid in air inlet and the gas outlet.

Further, the electret electrostatic air filter material is made of electret electrostatic polypropylene fibers.

Furthermore, the heat exchanger adopts a surface type air heat exchanger, and the high-pressure low-temperature plasma adopts an ultrahigh-pressure low-current sawtooth metal electrode.

Further, the first air filter and the ozone filter are detachably fixed on the inner side of the box body.

Furthermore, the detachable fixed structure comprises a front side sealing baffle plate, a rear side sealing baffle plate, a support frame and a locking bolt, the first air filter and the ozone filter both comprise a cuboid filter body, the outer side shapes of the rear side sealing baffle plate and the front side sealing baffle plate are matched with the inner side of the box body, a through hole matched with the cuboid filter body is arranged between the rear side sealing baffle plate and the front side sealing baffle plate, a fixed edge extends outwards from the front side of the peripheral side surface of the cuboid filter body along the vertical direction, the support frame is fixed on the inner wall of the box body, the peripheral edge of the rear side sealing baffle plate is fixed on the inner wall of the box body, the rear side surface of the cuboid filter body is arranged at the front side of the rear side sealing baffle plate, meanwhile, the rear side surface of the fixed edge is arranged on the front side surface of the support frame, and the, the front side sealing baffle, the fixing edge and the support frame are provided with screw holes corresponding to each other, and the locking bolt penetrates through the screw holes in the front side sealing baffle, the fixing edge and the support frame and is locked and fixed.

Further, a square groove is formed in the edge of the front side face and the edge of the rear side face of the cuboid filter body, and a sealing gasket is arranged in each of the square grooves of the front side face and the rear side face.

Further, the second air filter is fixed inside the case by a sealing structure.

Further, the sealing structure comprises a sealing baffle, a Z-shaped sealing frame and sealing bolts, grooves are distributed on the periphery of the second air filter along the side face of the second air filter, liquid tank sealing glue is arranged in the grooves, the Z-shaped sealing frame is annular and is in a Z-shaped vertical section, the other side edge of the Z-shaped sealing frame is fixed on the inner wall of the box body, the other side edge of the Z-shaped sealing frame is arranged in the liquid tank sealing glue in the grooves, the outer side shape of the sealing baffle is matched with the inner side of the box body, a through hole matched with the second air filter is formed in the middle of the sealing baffle, a bolt fixing support is arranged on the front side of the Z-shaped sealing frame, a threaded hole is formed in the bolt fixing support, and the sealing bolts penetrate through screw holes of the sealing baffle and are locked and fixed on the bolt fixing support on the front.

Furthermore, the outer sides of the box bodies at the corresponding positions of the first air filter, the second air filter and the ozone filter are respectively provided with a digital pressure difference alarm device, and two ends of each digital pressure difference alarm device are respectively connected with pressure difference pipes positioned at the front side and the rear side of the first air filter, the second air filter or the ozone filter through hoses.

Compared with the prior art, the utility model, have following advantage and effect: the utility model discloses an air cleaner, heat exchanger, high pressure low temperature plasma, second air cleaner, ozone filter and fan unit have constituted a brand-new air conditioning unit that can exterminate virus and bacterium, will get into the air in the box and filter, exterminate virus and bacterium wherein to decompose the main harmful gas in the air and handle, and carry out cooling drying or heating to the air that gets into in the box, through control motor rotational speed, carry out infinitely variable control to the amount of wind of the clean air after handling. The air filtering and virus and bacteria killing device has the advantages that the application range of air filtering and virus and bacteria killing of the air conditioning unit is greatly expanded, the energy consumption of the device is reduced, viruses, bacteria and harmful gases in the air can be removed, and the concentration of the viruses, the bacteria, dust and the harmful gases in the air is controlled within the national standard range. On the basis of using the traditional melt-blown cloth for filtration, the polyamide-based N-halamine nanofiber membrane filter material is added to kill viruses and bacteria, the killing effect of the viruses and the bacteria is improved, and a liquid sealing structure is adopted to ensure that the viruses are not leaked.

Drawings

Fig. 1 is a schematic view of the air conditioning unit capable of killing virus and bacteria according to the present invention.

Fig. 2 is a schematic structural view of the detachable fixing device of the present invention.

Fig. 3 is a schematic view of the sealing structure of the present invention.

Fig. 4 is a schematic diagram of the digital differential pressure alarm device of the present invention.

Detailed Description

To elaborate on the technical solution adopted by the present invention for achieving the predetermined technical purpose, the technical solution in the embodiment of the present invention will be clearly and completely described below by combining with the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a partial embodiment of the present invention, not a whole embodiment, and technical means or technical features in the embodiment of the present invention can be replaced without paying creative efforts, and the present invention will be described in detail below by combining with the embodiments with reference to the drawings.

As shown in fig. 1, the air conditioning unit capable of killing virus and bacteria of the present invention comprises a box 1, a first air filter 2, a heat exchanger 3, a high pressure low temperature plasma 4, a second air filter 5, an ozone filter 6 and a blower device 7, wherein the first air filter 2, the heat exchanger 3, the high pressure low temperature plasma 4, the second air filter 5, the ozone filter 6 and the blower device 7 are sequentially disposed in the box 1 from left to right. The first air filter 2 and the second air filter 5 are used for filtering air entering the box body 1 and blocking viruses and bacteria in the period, the heat exchanger 3 is used for cooling, drying or heating the air entering the box body 1, the high-pressure low-temperature plasma 4 is used for killing the viruses and bacteria attached to the filters and decomposing harmful gases in the air, the ozone filter 6 is used for reducing the ozone concentration to be within the concentration permitted by the national standard, and the fan device 7 is used for sucking the air into the box body 1, filtering the air by the first air filter 2, the heat exchanger 3, the high-pressure low-temperature plasma 4, the second air filter 5 and the ozone filter 6 and blowing the air.

Wherein, the first air filter 2 adopts electret electrostatic air filtering material and is in a square shape. The electret electrostatic air filter material is electrostatic polypropylene fiber, the filter efficiency of the electret electrostatic air filter material on the particle size of more than 0.5 mu m can reach more than 95%, and the intercepted inhalable particles and bacteria are both attached to the surface. The filter is thus able to retain a substantial proportion of the inhalable particles. The first air filter 2 plays a role in first filtering, and can filter more than 95% of inhalable particles with the diameter larger than 0.5 micrometer in the air under the precondition that the wind speed of the windward side is not higher than 2m/s and the air resistance is not more than 15Pa, and the first air filter 2 is low in price and is disposable.

The second air filter 5 adopts a polyamide-based N-halamine nanofiber membrane filter material and is in a square shape. The polyamide-based N-halamine nanofiber membrane has the advantages that the filtering efficiency of the material on particles with the diameters larger than 0.3 mu m can reach 99.995%, the performance of the material is superior to that of an N95 mask, bacteria and viruses in the air are blocked on the surface of the fiber membrane, so that most of the viruses and bacteria can be intercepted by the filter, the polyamide-based N-halamine nanofiber membrane is compounded by a compound which can be rearranged in a molecular structure under the condition of light excitation, a metastable structure with light absorption transient state is generated to store the activity, and the antibacterial activity can be slowly released under the subsequent dark condition, so that the material can kill the viruses and bacteria permanently under the conditions of light and dark, and the virus and bacteria killing functions can be achieved in an online manner. The second air filter 5 is used for carrying out secondary filtration on the air after primary filtration, the filtering material of the second air filter 5 is a polyamide-based N-halamine nanofiber membrane, the fiber diameter is only 1-80 nanometers, the filtering efficiency of the material on the air with the particle size larger than 0.3 mu m can reach 99.995%, the nanofiber membrane is high in strength and can be washed by water, so that the material can be replaced, and the replacement cost is reduced.

The box 1 is a hollow closed rectangular box structure, the left end of the box 1 is provided with an air inlet 8, the right end of the box 1 is provided with an air outlet 9, and grids are arranged in the air inlet 8 and the air outlet 9.

The heat exchanger 3 is a surface type air heat exchanger, is positioned between the first air filter 2 and the high-pressure low-temperature plasma 4, and is used for cooling, drying or heating the air entering the box body.

The high-voltage low-temperature plasma 4 adopts an ultra-high-voltage low-current sawtooth metal electrode. The high-pressure low-temperature plasma 4 is fixedly connected in the box body 1 and is positioned between the heat exchanger 3 and the second air filter 5, and is used for killing viruses and bacteria attached to the filters and decomposing and converting harmful gases in the air. The high-pressure low-temperature plasma 4 is characterized in that: 1) the method adopts pulse high voltage, the voltage is as high as 50kV, the voltage of the domestic low-temperature plasma product is generally lower than 10kV at present, the formed active groups are too few, and the purification efficiency is low; 2) the current is low and is only 2-5 mA, so that short circuit and electric spark generation are avoided; 3) the air resistance is close to zero; 4) the structure is simple; 5) easy to clean. The high-pressure low-temperature plasma kills viruses and bacteria, and the principle of decomposing harmful gases is as follows: 1) function of the active group: the low-temperature plasma is formed by pulse high-voltage glow discharge, and a large number of active oxygen ions, high-energy free radicals and other components contained in the plasma are easy to generate oxidation reaction with proteins and nucleic acid substances in viruses, bacteria, molds and spores to denature so as to kill various microorganisms; 2) ultraviolet ray action: in the process of exciting H2O2 to form plasma, along with the generation of partial ultraviolet rays, the high-energy ultraviolet photons (3.3-3.6 eV) are absorbed by proteins in microorganisms or viruses, so that the molecules are denatured and inactivated; 3) the action of an electric field: the cell membranes of the virus and the bacteria have certain charges, and the charge distribution of the virus and the bacteria is damaged under the effect of the breakdown etching effect generated by electrons and ions with high kinetic energy of plasma, so that the normal physiological activity and metabolism of the virus and the bacteria cells are directly influenced, and the virus and the bacteria cells even die finally.

The ozone filter 6 is in the form of a plate, located between the second air filter 5 and the fan device 7. The air treated by the high-pressure low-temperature plasma 4 may carry ozone with a certain concentration, the ozone can continuously kill bacteria remained in the air, and the concentration of the ozone in the air is reduced to the range permitted by the national standard after the treatment of the ozone filter 6.

As shown in fig. 2, the first air filter 2 and the ozone filter 6 are detachably fixed inside the cabinet. The detachable and fixed structure comprises a front side sealing baffle plate 10, a rear side sealing baffle plate 11, a support frame 12 and a locking bolt 13, wherein both the first air filter 2 and the ozone filter 6 comprise a cuboid filter body, the outer side shapes of the rear side sealing baffle plate 11 and the front side sealing baffle plate 10 are matched with the inner side of the box body 1, a through hole matched with the cuboid filter body is formed in the middle of the rear side sealing baffle plate 11 and the front side sealing baffle plate 10, a fixed edge 14 extends outwards from the front side of the peripheral side of the cuboid filter body along the vertical direction, the support frame 12 is fixed on the inner wall of the box body 1, the peripheral edge of the rear side sealing baffle plate 11 is fixed on the inner wall of the box body 1, the rear side of the cuboid filter body is arranged on the front side of the rear side sealing baffle plate 11, meanwhile, the rear side of the fixed edge 14 is arranged on the front side of the support frame 12, screw holes corresponding to each other are formed in the front side sealing baffle plate 10, the fixing edge 14 and the support frame 12, and the locking bolt 13 penetrates through the screw holes in the front side sealing baffle plate 10, the fixing edge 14 and the support frame 12 and is locked and fixed. The edges of the front side face and the back side face of the cuboid filter body are provided with square grooves, and the square grooves of the front side face and the back side face are internally provided with a sealing gasket 15 respectively.

As shown in fig. 3, the second air cleaner 5 is fixed inside the case by a sealing structure. The sealing structure comprises a sealing baffle 16, a Z-shaped sealing frame 17 and a sealing bolt 18, a groove 19 is formed in the side face of the second air filter 5 and distributed along the periphery of the second air filter 5, liquid tank sealing glue 20 is arranged in the groove 19, the Z-shaped sealing frame 17 is annular and matched with the groove 19 in shape, and the vertical section of the Z-shaped sealing frame 17 is Z-shaped. One side edge of a Z-shaped sealing frame 17 is fixed on the inner wall of the box body 1, the other side edge of the Z-shaped sealing frame 17 is arranged in liquid tank sealing glue 20 in a groove 19, the outer side shape of a sealing baffle 16 is matched with the inner side of the box body 1, a through hole matched with the second air filter 5 is formed in the middle of the sealing baffle 16, a bolt fixing support 21 is arranged on the front side of the Z-shaped sealing frame 17, a threaded hole is formed in the bolt fixing support 21, and a sealing bolt 18 penetrates through the threaded hole of the sealing baffle 16 and is locked and fixed on the bolt fixing support 21 on the front side of the Z-shaped sealing frame 17.

The outer sides of the box bodies at the corresponding positions of the first air filter 2, the second air filter 5 and the ozone filter 6 are respectively provided with a digital pressure difference alarm device 22, the digital pressure difference alarm device 22 adopts a MY-P05kPA digital pressure difference alarm device, and two ends of each digital pressure difference alarm device 22 are respectively connected with pressure difference pipes 24 positioned at the front side and the rear side of the first air filter 2, the second air filter 5 or the ozone filter 6 through hoses 23.

During operation, the fan device 7 is started, air is sucked from the air inlet 8, and the sucked air passes through the first air filter 2, the heat exchanger 3, the high-pressure low-temperature plasma 4, the second air filter 5 and the ozone filter 6 and is blown out from the air outlet 9. In the process, after air passes through the first air filter 2, more than 95% of inhalable particles with the diameter larger than 0.5 micron in the air are filtered under the precondition that the wind speed on the windward side is not higher than 2m/s and the air resistance is not more than 15 Pa; after the air filtered by the first air filter 2 flows through the second air filter 5, more than 99.995% of virus, bacteria and inhalable particles with the diameter of more than or equal to 0.3 micrometer are filtered under the precondition that the wind speed on the windward side is not higher than 2m/s and the air resistance is not more than 50Pa, and the filtering efficiency of the air filter is more than 99.995%. Meanwhile, the air can be further purified under the action of the high-pressure low-temperature plasma 4, the efficiency of killing viruses, bacteria and inhalable particles in the preferred embodiment of the invention can be close to 100%, and the concentrations of the viruses, the bacteria, the inhalable particles and harmful gases in the air can be controlled within the national standard range. Therefore, the concentration of virus, bacteria, inhalable particles and harmful gas in the air which passes through the first air filter 2, the high-pressure low-temperature plasma 4, the second air filter 5 and the ozone filter 6 and is blown out from the air outlet 9 can be controlled within the national standard range. The air conditioning unit capable of killing viruses and bacteria greatly improves the air filtering effect and the virus and bacteria killing effect, fully purifies the indoor air of hospitals and public buildings, eliminates harmful gas in the indoor air and ensures that the concentration of the harmful gas in the indoor air reaches the national standard range.

The utility model discloses an air cleaner, heat exchanger, high pressure low temperature plasma, second air cleaner, ozone filter and fan unit have constituted a brand-new air conditioning unit that can exterminate virus and bacterium, will get into the air in the box and filter, exterminate virus and bacterium wherein to decompose the main harmful gas in the air and handle, and carry out cooling drying or heating to the air that gets into in the box, through control motor rotational speed, carry out infinitely variable control to the amount of wind of the clean air after handling. The air filtering and virus and bacteria killing device has the advantages that the application range of air filtering and virus and bacteria killing of the air conditioning unit is greatly expanded, the energy consumption of the device is reduced, viruses, bacteria and harmful gases in the air can be removed, and the concentration of the viruses, the bacteria, dust and the harmful gases in the air is controlled within the national standard range. On the basis of using the traditional melt-blown cloth for filtration, the polyamide-based N-halamine nanofiber membrane filter material is added to kill viruses and bacteria, the killing effect of the viruses and the bacteria is improved, and a liquid sealing structure is adopted to ensure that the viruses are not leaked.

Above, only the preferred embodiment of the present invention has been described, but not to limit the present invention in any form, and although the present invention has been disclosed with the preferred embodiment, but not to limit the present invention, any skilled person familiar with the art can make some changes or modifications to equivalent embodiments with equivalent changes within the technical scope of the present invention, but all the technical matters of the present invention do not depart from the technical scope of the present invention.

Claims

1. An air conditioning unit capable of killing viruses and bacteria is characterized in that: the air purifier comprises a box body, a first air filter, a heat exchanger, a high-pressure low-temperature plasma, a second air filter, an ozone filter and a fan device, wherein the first air filter, the heat exchanger, the high-pressure low-temperature plasma, the second air filter, the ozone filter and the fan device are sequentially arranged in the box body from left to right, the first air filter adopts electret electrostatic air filtering materials, and the second air filter adopts polyamide-based N-halamine nanofiber membrane filtering materials.

2. A virucidal and bactericidal air conditioning unit as set forth in claim 1 in which: the left end of box is provided with the air inlet, and the right-hand member of box is provided with the gas outlet, all is provided with the grid in air inlet and the gas outlet.

3. A virucidal and bactericidal air conditioning unit as set forth in claim 1 in which: the electret electrostatic air filter material is made of electret electrostatic polypropylene fibers.

4. A virucidal and bactericidal air conditioning unit as set forth in claim 1 in which: the heat exchanger adopts a surface type air heat exchanger, and the high-pressure low-temperature plasma adopts an ultrahigh-pressure low-current sawtooth metal electrode.

5. A virucidal and bactericidal air conditioning unit as set forth in claim 1 in which: the first air filter and the ozone filter are detachably fixed on the inner side of the box body.

6. A virucidal and bactericidal air conditioning unit as set forth in claim 5 in which: the detachable and fixed structure comprises a front side sealing baffle plate, a rear side sealing baffle plate, a support frame and a locking bolt, wherein the first air filter and the ozone filter both comprise a cuboid filter body, the outer side shapes of the rear side sealing baffle plate and the front side sealing baffle plate are matched with the inner side of the box body, through holes matched with the cuboid filter body are formed in the middles of the rear side sealing baffle plate and the front side sealing baffle plate, a fixing edge extends outwards from the front side of the peripheral side face of the cuboid filter body along the vertical direction, the support frame is fixed on the inner wall of the box body, the peripheral edge of the rear side sealing baffle plate is fixed on the inner wall of the box body, the rear side face of the cuboid filter body is arranged on the front side face of the support frame, the front side sealing baffle plate is covered on the front side of the cuboid filter body, the front side sealing baffle plate, The fixing edge and the support frame are provided with screw holes corresponding to each other, and the locking bolt penetrates through the front side sealing baffle, the fixing edge and the screw holes in the support frame and is locked and fixed.

7. A virucidal and bactericidal air conditioning unit as set forth in claim 6 in which: the edge of the front side face and the edge of the back side face of the cuboid filter body are both provided with a square groove, and a sealing gasket is arranged in each of the square grooves of the front side face and the back side face.

8. A virucidal and bactericidal air conditioning unit as set forth in claim 1 in which: the second air filter is fixed on the inner side of the box body through a sealing structure.

9. A virucidal and bactericidal air conditioning unit as set forth in claim 8, wherein: seal structure contains sealing baffle, Z type seal frame and sealing bolt, second air cleaner's side is provided with along second air cleaner all around the distribution recess, be provided with the sealed glue of cistern in the recess, Z type seal frame is the cyclic annular of shape and recess matching and the vertical cross-section of Z type seal frame is the zigzag, one side border of Z type seal frame is fixed on the box inner wall, the opposite side border of Z type seal frame sets up in the sealed glue of cistern in the recess, sealing baffle's outside shape matches with the box is inboard and the centre of sealing baffle is opened has the through-hole that matches with second air cleaner, Z type seal frame front side is provided with bolt fastening support and is opened threaded hole on the bolt fastening support, sealing bolt passes sealing baffle's screw and locking is fixed on the bolt fastening support of Z type seal frame front side.

10. A virucidal and bactericidal air conditioning unit as set forth in claim 1 in which: and the outer sides of the box bodies at the corresponding positions of the first air filter, the second air filter and the ozone filter are respectively provided with a digital pressure difference alarm device, and two ends of each digital pressure difference alarm device are respectively connected with pressure difference pipes positioned at the front side and the rear side of the first air filter, the second air filter or the ozone filter through hoses.