KR102639634B1 - DBD optical plasma module for negative pressure and sterilization and purification equipment - Google Patents

Abstract

The present invention relates to a DBD plasma module, and more specifically to a plasma module for a negative pressure machine.
The DBD plasma module according to the present invention includes a Dielectric Barrior Discharge (DBD) plasma reactor, a perforated photocatalyst coating member surrounding the DBD plasma reactor, and a fixing member to which the DBD plasma reactor is fixed.

Description

DBD optical plasma module for negative pressure and sterilization and purification equipment}

The present invention relates to a DBD plasma module, and more specifically to a plasma module for a negative pressure machine.

There is a known method of treating bad odors, harmful gases, and microorganisms using DBD plasma.

In Republic of Korea Patent Publication No. 10-2020-0032387, as shown in FIG. 1, a dielectric barrier discharge filter using DBD plasma is installed inside the air purifier along with a functional filter with a metal complex-type polymer membrane and a metal complex-type carbon porous film attached. Discloses a method that is excellent in removing mold, bacteria, fine dust, volatile organic compounds, and odor, and prevents the risk of secondary pollution by removing unreacted ozone and oxides generated after incineration.

Republic of Korea Patent Publication No. 10-2022-0114731 discloses a device having a form factor that can be used in an air purifier using DBD plasma. As shown in FIG. 2, the DBD plasma air purifier disclosed in the document includes a plate-shaped anode part and a ring-shaped cathode part surrounding the anode part at a position spaced apart from the anode part inside the case, and the anode part A dielectric part is placed between the and the cathode part.

These DBD devices are suitable for air purifiers with relatively slow air flow, but there is a problem that their structure and performance are not suitable for use in devices with fast air flow, such as negative pressure machines.

Republic of Korea Patent Publication No. 10-2020-0032387 Republic of Korea Patent Publication No. 10-2022-0114731 Republic of Korea Patent Publication No. 10-2023-0014285

The problem to be solved by the present invention is to provide a new DBD plasma module for negative pressure machines.

Another problem to be solved by the present invention is to provide a negative pressure machine equipped with a DBD plasma module for negative pressure machine.

In order to solve the above problems, the present invention

DBD (Dielectric Barrior Discharge) plasma reactor,

a perforated photocatalyst coating member surrounding the DBD plasma reactor, and

Provided is a DBD plasma module for a negative pressure machine including a fixing member to which the DBD plasma reactor is fixed.

In one aspect, the present invention

DBD (Dielectric Barrior Discharge) plasma reactor,

a perforated photocatalyst coating member surrounding the DBD plasma reactor, and

It provides a movable negative pressure machine including a DBD plasma module for negative pressure machine including a fixing member to which the DBD plasma reactor is fixed.

In one aspect, the present invention

DBD (Dielectric Barrior Discharge) plasma reactor,

a perforated photocatalyst coating member surrounding the DBD plasma reactor, and

A fixing member to which the DBD plasma reactor is fixed.

It provides a negative pressure hospital room including a mobile negative pressure machine including a DBD plasma module for negative pressure machine including.

Although not limited in theory, in the DBD plasma module, bacteria and/or viruses introduced into the mobile negative pressure device are first treated by ozone generated in the DBD plasma reactor, and are also activated by light generated during discharge in the DBD plasma reactor. Bacteria and/or viruses are secondaryly treated by the photocatalyst and can be effectively used in devices with high flow rates such as mobile negative pressure machines.

In the present invention, the DBD plasma reactor constituting the DBD plasma module for a negative pressure device may have a network-shaped electrode located on the outside of a cylindrical insulator so that a plasma reaction occurs on the entire outer surface, and a cylindrical electrode may be located inside the cylindrical insulator.

In the present invention, the cylindrical insulator forming the DBD plasma reactor may be a test tube-type insulator made of glass with one side closed in a hemispherical shape and the other side having an opening.

In the present invention, the network electrode surrounding the outer surface of the cylindrical insulator may be composed of a cylindrical network body and a first power line connected to the network body.

In the present invention, the cylindrical electrode inserted into the interior of the cylindrical insulator includes a conductive rod, spacing rings inserted into the conductive rod to maintain a constant distance between the conductive rod and the cylindrical insulator, and an agent connected to the conductive rod. 2 It can be made up of power lines.

In the present invention, the perforated photocatalyst coating member forming the DBD plasma module for a negative pressure device may be composed of a perforated member surrounding the DBD plasma reactor and a coating layer containing a photocatalyst activated by ultraviolet light.

In the practice of the present invention, the drilling member has a longer length than the plasma reactor so as to surround the cylindrical plasma reactor, has an empty interior, and the plasma reactor insertion hole on one side may be a rectangular parallelepiped-shaped drilling member.

In the practice of the present invention, the coating layer formed on the perforation member may be manufactured by spray coating and curing a coating composition containing a TiO2 photocatalyst and a binder.

In the present invention, the fixing member constituting the DBD plasma module for negative pressure has a disc or polygonal plate-shaped fixing body that can be in close contact with the wall for fixation, a reactor receiving groove that can accommodate the DBD reactor, and is oriented in the opposite direction of the contact surface. It may be made of a protruding fixing protrusion.

In the practice of the present invention, the center of the fixing body may be formed to extend to the reactor receiving groove formed on the fixing protrusion, and fixing holes for screw fixation may be formed in the peripheral part of the fixing body.

In one embodiment of the present invention, the diameter of the reactor receiving groove formed in the center of the fixing protrusion may correspond to the outer diameter of the DBD plasma reactor, and the outer diameter of the fixing protrusion may correspond to the plasma reactor insertion hole of the perforation member.

In the present invention, the negative pressure machine in which the DBD plasma module for negative pressure machine is installed is capable of producing active species that can kill, for example, inactivate or reduce the activity of bacteria and / or viruses occurring in hospitals. It may include a discharge device.

In the practice of the present invention, the negative pressure device may further include a dust collection device capable of collecting bacteria and/or viruses killed by the discharge device using electrostatic force.

In one embodiment of the present invention, the negative pressure machine in which the DBD plasma module for negative pressure machine is installed has an air inlet and an air outlet, and includes a body portion in which an internal flow path is formed connecting the air inlet and the air outlet; A modular streamer discharge device installed in the internal flow path; A modular discharge dust collection device installed downstream of the modular streamer discharge device; A DBD plasma module installed downstream of the ozone removal device and generating ozone; Negative pressure blowing fan; And it may be a mobile negative pressure machine including a control unit.

Although not limited in theory, the negative pressure device including the DBD plasma module according to the present invention inhales the bacteria and/or viruses instead of filtering and discharging the bacteria and/or viruses in the air using a filter having fine pores. By discharging after treatment, the problem of live bacteria and/or viruses existing inside the negative pressure machine located in the hospital room or being discharged outside the hospital is solved. In addition, the problem of cost due to frequent replacement of high-performance filters and high-performance filters are solved. It is possible to solve the pressure loss problem of the blower due to this, and in addition, the large amount of heat generated from the DBD plasma module is cooled using the fast air flow generated in negative pressure mode, allowing it to be used without a separate cooling device.

In one embodiment of the present invention, the modular streamer discharge device installed in the multi-function negative pressure device may be a tubular cell-type discharge device. In the practice of the present invention, the tubular cell type discharge device includes a first electrode plate in which tubular cells of a predetermined length are connected and repeatedly arranged vertically, and a second electrode plate in which needle-type discharge electrodes are disposed in each tubular cell. It may be a streamer discharge device including a. The tubular cell type discharge device may be a tubular cell type discharge device disclosed in Korean Patent No. 2302355 or 2287838.

In one embodiment of the present invention, the modular discharge-type dust collection device forming the multi-functional negative pressure device includes a linear discharge device that charges substances contained in the air passing through the tubular cell-type discharge device, and electrostatic attraction of the charged substances. It may be a dust collecting device including a linear discharge electrode including a dust collecting plate that collects dust. In the practice of the present invention, the dust collector including the linear discharge electrode includes a linear discharge electrode made of metal lines arranged in parallel at a predetermined interval, and a counter electrode plate disposed between the metal lines forming the linear discharge electrode. It includes a discharge unit that collects ionized particles discharged from the discharge unit, and a dust collection unit that includes a plurality of dust collection plates that collect ionized particles discharged from the discharge unit. The dust collector including the linear discharge electrode may be a dust collector disclosed in Korean Patent No. 2302355 or 2287838.

In the present invention, the fan forming the mobile negative pressure machine may be a high-capacity negative pressure blowing fan. The negative pressure blowing fan is a blowing fan that can form a predetermined negative pressure in the space where the mobile negative pressure machine is installed to prevent the air in the hospital room from escaping into the hospital, and is 20 CCM or more, preferably 20 to 30 CCM, for example, 20 to 20 CCM. It may be a blowing fan capable of blowing 25 CCM of air. The high-capacity portable negative pressure blower fan can air cool a large amount of heat generated from the negative pressure DBD plasma module.

In one embodiment of the present invention, the DBD plasma module generates a large amount of ozone in a mobile negative pressure machine, activates the coated photocatalyst, and treats bacteria and/or viruses passing through the negative pressure machine and discharges them outside the hospital. there is.

In the present invention, a new DBD plasma module that can be used in a negative pressure machine with fast air flow is provided.

The DBD plasma module for a negative pressure machine according to the present invention can treat harmful substances contained in the air flowing through the negative pressure machine using ozone generated in the DBD reactor, and the waste generated in the DBD reactor activates the photocatalyst using light. Harmful substances contained in the air flowing through the negative pressure machine can be additionally treated.

Additionally, the present invention provides a negative pressure machine including a DBD plasma module.

1 is a diagram explaining the operation of a DBD plasma reactor in the prior art.
Figure 2 is a diagram showing a DBD plasma reactor implemented in a new form factor in the prior art.
Figure 3 is a perspective view of a plasma module according to the present invention.
Figure 4 is an exploded perspective view of the plasma module according to the present invention.
Figure 5 is a cross-sectional view of a plasma module according to the present invention.
Figure 6 is a diagram showing the operation of the plasma module according to the present invention.
Figure 7 is a perspective view of a negative pressure machine equipped with a plasma module according to the present invention.
Figure 8 is an exploded perspective view of a negative pressure machine equipped with a plasma module according to the present invention.
Figure 9 is an exploded rear perspective view of a negative pressure machine equipped with a plasma module according to the present invention.
Figure 10 is a cross-sectional view of a negative pressure machine equipped with a plasma module according to the present invention.
Figure 11 is a diagram showing a perspective view of a retractable and retractable plasma module according to the present invention.
Figure 12 is a diagram showing a lower perspective view of the retractable and retractable plasma module according to the present invention, in the opposite direction to Figure 11, with the external insulating member removed.
Figure 13 is a view showing a state in which the external insulating member is removed and the square cylindrical case is separated from the retractable and retractable plasma module according to the present invention, and is shown in the opposite direction to Figure 1.
Figure 14 is a perspective view showing the first electrode plate of the retractable and retractable plasma module according to the present invention.
Figure 15 is a perspective view showing the second electrode plate of the retractable and retractable plasma module according to the present invention.
Figure 16 is a diagram showing the coupling relationship of the retractable and retractable plasma module according to the present invention.
Figure 17 is a perspective view of a retractable and retractable dust collection module according to an embodiment of the present invention.
Figure 18 is an exploded perspective view of a retractable and retractable dust collection module according to an embodiment of the present invention.
Figure 19 is an exploded perspective view of a docking plate attached to the front of a retractable and retractable dust collection module according to an embodiment of the present invention.
Figure 20 is a bottom perspective view of the dust collection part of the retractable and retractable dust collection module according to an embodiment of the present invention in an exploded state.
Figure 21 is a bottom photo of a retractable and retractable dust collection module according to an embodiment of the present invention.
Figure 22 is an enlarged photograph of a metal wire according to an embodiment of the present invention.
Figure 23 is a diagram explaining the discharge state of a metal wire according to an embodiment of the present invention. (a) shows a conventional tungsten metal wire, and (b) shows a metal wire made of nanowire of the present invention.
Figure 24 is a photograph of the integrated dust collection unit in the retractable dust collection module according to an embodiment of the present invention, showing the state in which the protective cover on one side is removed.
Figure 25 is a view showing a state in which a unit dust collection plate and a unit discharge plate aligned coaxially are penetrated according to an embodiment of the present invention.
Figure 26 shows a state in which the unit dust collection plate and the unit discharge plate are coaxially aligned according to an embodiment of the present invention, (a) is a state in which the unit dust collection plate is disposed on the front, and (b) is a state in which the unit discharge plate is disposed on the front. This is a drawing showing the condition.
Figure 27 is an explanatory diagram showing the operating state of the dust collection device according to the present invention.
Figure 28 is a diagram showing a state in which a negative pressure machine including a plasma module according to the present invention operates when installed in a negative pressure hospital room.

Hereinafter, the present invention will be described in detail through examples. It should be noted that the following examples are intended to illustrate the invention and are not intended to limit the invention.

DBD plasma module

As shown in FIGS. 3 to 5, the DBD plasma module 700 is a DBD (Dielectric Barrior Discharge) A plasma reactor 710 and a TiO2 photocatalyst coating member 720 that surrounds the plasma reactor 710 and is activated by ultraviolet rays (about 360 nm) generated by DBD plasma discharge (micro discharge) to double the sterilizing power. It consists of a fixing member 730 that secures them to the body 100.

The DBD plasma reactor 710 includes a test tube-shaped insulator 711 made of glass, which has a cylindrical extension, is closed in a hemispherical shape on one side, and is open on the other side, and a conductive cylindrical network body 712 that surrounds and contacts the outer surface of the test tube-type insulator. , a conductive rod 713 inserted and fixed inside the test-tube-type insulator 711, and inserted into one end of the conductive rod 713 so that the conductive rod 713 does not contact the inner wall of the test-tube-type insulator 711. an insulating spacing ring 714 interposed in the space between the conductive rod body 713 and the test tube-type insulator 711, and a first power line 716 and a conductive rod body 713 connected to the conductive cylindrical network body 712. It consists of a second power line 717 connected to .

The conductive rod 713 has a constant first diameter to form a predetermined first gap with the test tube insulator 711, and includes a long discharge portion 713-1 extending from one side of the test tube insulator 711 to the other side, and a test tube type insulator 711. It has a second diameter corresponding to the inner diameter of the insulator 711 and consists of a short stopper 713-2 and a coupling screw 713-3, and the stopper 713-2 and the test tube insulator 711 A thin insulating stopper ring 715 is inserted between them, and the second power line 717 is connected to the coupling screw 713-3.

The photocatalyst coating member 720 has a longer length than the plasma reactor 710, is hollow on the inside and has a rectangular parallelepiped shape, has a plurality of perforations 721 formed on the surface, and has a plasma reactor insertion hole 722 on one side. It has a photocatalyst (not shown) coated on the surface.

The fixing member 730 consists of a disk-shaped fixing body 731 in close contact with the inner wall of the internal bracket 200, and a cylindrical reactor fixing protrusion 732 protruding to one side.

A wire receiving hole 733 is formed in the center of the disc-shaped fixing body 731, and fixing holes 734 are formed in the peripheral part of the disc-shaped fixing body 731 to be attached to the inner wall of the internal bracket 200 using a screw. It is fixed.

A cylindrical groove 745 corresponding to the outer diameter of the DBD plasma reactor 710 is formed inside the cylindrical reactor fixing protrusion 732, and the end of the test tube insulator 711 forming the DBD plasma reactor 710 is inserted and fixed. .

The outer diameter of the cylindrical reactor fixing protrusion 732 corresponds to the inner diameter of the plasma reactor insertion hole 720 formed in the photocatalyst coating member 720, and accordingly, the cylindrical reactor fixing protrusion 732 is located inside the reactor insertion hole 720. It is inserted and fixed.

The first power line 716 is connected to the conductive cylindrical network body 712 through the perforation 721 formed in the photocatalyst coating member 720, and the second power line 717 is connected to the coupling screw through the wire receiving hole 733. Connected to (713-3).

As shown in FIG. 6, the DBD plasma module 700 is fixed to the inner wall 99 of the air passage 66, the conductive cylindrical network body 712 outside the test tube insulator 711, and the test tube insulator 711. ) When the first power line 716 and the second power line 717 are respectively connected to the internal conductive rod 713 and high-voltage alternating current is applied, ozone (red) is produced in the DBD plasma reactor 710 by micro discharge. colored dots) and ultraviolet rays (red lightning) are generated.

The air flowing inside the air passage 66 flows into the DBD plasma module 700 through the perforation 721 formed in the photocatalyst coating member 720 surrounding the DBD plasma reactor 710, and is caused by micro discharge. Contact with generated ozone. Harmful substances (bacteria and/or viruses) contained in the air react directly with ozone (black arrow filled with red) and are then killed or inactivated.

Ultraviolet rays generated from the DBD plasma reactor 710 activate the TiO2 photocatalyst coated on the photocatalyst coating member 720 surrounding the DBD plasma reactor 710. The activated photocatalyst comes into contact with harmful substances (bacteria and/or viruses) contained in the air and converts the harmful substances into harmless substances.

Some of the ozone generated in the DBD plasma reactor 710 flows along the air flow path 66 and reacts with remaining harmful substances to remove them.

Accordingly, the DBD plasma module 700 uses ozone and a photocatalyst simultaneously and operates effectively in a high-flux negative pressure machine as in the example below.

Negative pressure generator with DBD plasma module

The DBD plasma module 700 is mounted on a negative pressure machine with a high flow rate and used effectively.

As shown in FIGS. 7 to 10, the negative pressure machine 10 equipped with the DBD plasma module 700 has an air inlet 160 and an air outlet 170, and connects the air inlet and the air outlet. A body portion 100 in which an internal flow path is formed;

An internal bracket 200 installed inside the body 100;

A pre-filter 300 installed in the internal flow path;

A modular streamer discharge device 400 installed in the internal flow path;

A modular discharge dust collection device (500) installed downstream of the modular streamer discharge device;

A DBD plasma module 700 installed downstream of the ozone removal device;

Negative pressure blowing fan (800); and

Includes a control unit 900.

The body portion 100 of the negative pressure device 10 has an overall rectangular parallelepiped shape and consists of a front surface 110, both sides 120, a rear surface 130, a lower surface 140, and an upper surface 150.

An air inlet 160 is formed on the lower surface 140, and an air outlet 170 is formed on the rear surface 130. After air flows in from the air inlet 160 on the lower surface 140, it moves upward inside. It is discharged through the air outlet 170 on the rear surface 130.

A control unit 800 panel 810 that can control the operation of the multi-function negative pressure device 10 is formed on the upper part of the front 110.

The front 110 and both sides 120 are formed as one piece by bending a single rectangular plate into a U-shaped cross-section.

A PM sensor and a TVOC sensor 121 that can measure indoor dust and total VOC are attached to one side 120.

The rear surface 130 is composed of a lower opening and closing plate 131 for installing modularized processing devices mounted therein, and an upper opening and closing plate 132 on which the air outlet 170 is fixed.

The lower surface 140 consists of a rectangular plate 141 with an air inlet formed in the center, and a movable wheel 142 at the bottom of the plate for separation from the floor.

The internal bracket 200 is installed to insert the modularized processing device into the body 100 of the negative pressure machine 10 in a sliding manner, and has a rectangular parallelepiped size that can be inserted into the body 100. It has a height corresponding to the bottom of the air outlet 170 from the bottom of the body 100.

The internal bracket 200 has the front 210 and both sides 220 closed except for a portion, the lower surface is open to allow air to flow in, and the upper surface 250 is equipped with a negative pressure blowing fan 880. It is closed except for the internal flow path so that it can be installed, and the rear surface 230 is open so that modularized processing devices can be put in and out.

Inside the internal bracket 200, a plurality of pedestals 250 are formed so that modularized processing devices can be put in and out while sliding in a drawer manner through the open back surface 230, and the upper part of the internal bracket 200 A semicircular guide plate 260 is installed for smooth discharge of air by the negative pressure blowing fan 800.

A pre-filter 300 capable of filtering out large dust is installed at the inner bottom of the inner bracket 200; A modular streamer discharge device 400 is installed on the pre-filter 300; A modular discharge dust collector 500 is installed on the upper part of the modular streamer discharge device 400; Ozone removal devices 600 are installed on the upper part of the modular discharge dust collector 500, and a DBD plasma module 700 is fixed to the inner wall of the inner bralette 200 on the upper part of the ozone removal device 600. It is installed on the upper part of the internal bracket 200, and a negative pressure air fan 800 is installed to suck air into the inside of the guide plate 250 and discharge it.

The pre-filter 300 consists of a regular mesh-type strainer 320 for filtering large dust on a thin square ring-shaped border 310 so that it can be installed at the bottom of the internal bracket 200.

The mesh filter 320 used in the pre-filter 300 is a mesh that filters large particles such as dust and dirt but does not filter small particles of 1 micron or less such as bacteria and/or viruses. For example, It has a size of 50 to 100 mesh.

As shown in FIGS. 11 to 16, the modular streamer discharge device 400 has a square cylindrical case 410 made of a conductive metal plate with open top and bottom, and is insulated from the square cylindrical case 410 and has a square cylindrical shape. A first electrode plate 420 consisting of a plate portion 421 fixed to the inner bottom of the case 410 and perforated with a plurality of square holes, and a needle-type electrode 422 fixed to a non-perforated area of the plate portion; , a second electrode plate ( 430) and consists of a tubular cell type discharge device.

Among the side plates forming the square cylindrical case 410, the upper and lower sides of the two side plates 411 parallel to the loading and unloading direction are provided with flanges 412 extending along the loading and unloading direction at the top and bottom for convenient loading and unloading and insulation from the main body. is formed The upper end of the both side plates 411 has a cutout portion 413 for fixing the internal insulating member 480, and a bent piece 414 bent outward is formed at the lower end of the cutout portion 413.

The front side of the square cylindrical case 410 has a ground terminal 450 connected to the ground terminal of the main body when inserted, and a high voltage terminal 460 connected to the high voltage terminal of the main body when inserted.

The high voltage terminal 460 passes through the wall of the rectangular cylindrical case 410 and protrudes inward, contacts the bottom of the first electrode plate 420, and high voltage is applied to the first electrode plate 420 through this. . The ground terminal 450 is in contact with the outer surface of the square cylindrical case 410, and is in contact with the inner surface of the square cylindrical case 410 through the contact pin 431 of the second electrode plate 430. The second electrode plate 430 is grounded.

The upper and lower corners of the square cylindrical case 410 include body insulating members 440 attached to insulate them from the main body. The main body insulating member 440 is made of plastic and uses a corner cover having an 'ㄱ' shaped side cross section.

The inner wall of the square cylindrical case 410 is provided with a first inner wall insulating member 480 and a second inner wall insulating member 485 that can prevent contact between the first electrode plate 421 and the inner surface of the square cylindrical case 410. It is fixed.

The first inner wall insulating member 481 includes a first insulating body 481-1 extending up and down, a first insulating protrusion 481-2 at the bottom protruding in the inner direction, and a coupling protrusion at the top protruding in the outer direction. It has (481-3). In the first inner wall insulating member 481, the first insulating body 481-1 is screwed to the inner wall of the square cylindrical case 410, and a first electrode is provided on the lower surface of the first insulating protrusion 481-2. The plate portion 421 of the plate 420 is screwed, and the lower end of the second electrode plate 430 is spaced apart from the first electrode plate 420 on the upper surface of the first insulating protrusion 481-2. It settles down as The coupling protrusion 481-3 is inserted into the cutout 413 formed in the square cylindrical case 410, and the lower surface of the coupling protrusion 481-3 is seated on the bent piece 414 protruding from the cutout.

The engaging protrusion 481-3 seated on the bent piece 414 is firmly fixed by the latch rings 415 attached to both sides of the square cylindrical case 410.

The second inner wall insulating member 485 includes a second insulating body 485-1 extending vertically and a second insulating protrusion 485-2 protruding in the inner direction. The second insulating body 485-1 is fixed to the bottom of the inner wall of the square cylindrical case 410, and is fixed at the same height as the second insulating protrusion 485-2 and the first insulating protrusion 481-2. . The plate portion 421 of the first electrode plate 420 is screwed to the lower surface of the second insulating protrusion 485-2, and the lower end of the second electrode plate 430 is screwed to the upper surface of the first electrode plate 420. ) is seated at a distance from the

The first electrode plate 420 has a rectangular plate portion 421 perforated so that a plurality of rectangular holes 425 are aligned, and a non-perforated area 426 between the rectangular holes 425 in the rectangular plate portion 421. It consists of a needle electrode plate 423 fixed vertically.

On the edge of the rectangular plate portion 421, the first insulating protrusion 481-1 of the inner wall insulating member 481 of the cylindrical case 410 and the second insulating protrusion 485-1 of the second inner wall insulating member 485 are formed. ) Insulating member fixing holes 429 are formed to fix the lower surface of the.

In addition, needle fixing holes 428 for fixing the needle electrode plate 423 are drilled in the non-perforated area 426 of the rectangular plate portion 421 and aligned at predetermined intervals. The needle fixing holes 428 may change depending on the cell location of the second electrode plate 420 and may be located at the center of the cells.

The needle electrode plate 423 fixed to the rectangular plate portion 421 has a plurality of needles 424 protruding in the horizontal direction at predetermined intervals depending on the height of the vertical plate 422, and the lower end is bent horizontally to form a needle fixing piece. (422') is formed and is fixed to the needle fixing hole (428). The needle electrode plate 423 may be installed in a number corresponding to the number of cells of the second electrode plate 420 so that discharge occurs for each cell, and may be installed in an area where discharge is not required, for example, with low air flow. It may not be installed on the border area.

The second electrode plate 430 includes a cell-shaped plate 432 in which tubular cells 431 of rectangular cross-section are connected in a zigzag shape, mixing holes 433 formed on the walls of the tubular cells 431, and a cell-shaped plate 432. It includes contact pins 434 attached to the front and rear outer walls of the.

A plurality of mixing holes 433 are formed in one tubular cell 431, and are formed on the walls and corners, respectively, so that two cells can communicate with one hole. In addition, two to three mixing holes 433 are formed at predetermined intervals in the vertical direction according to the height of the needle formed on the first electrode plate.

It is seated on the upper surface of the first insulating protrusion 481-2 of the internal insulating member 481 of the second electrode plate 430 and the second insulating protrusion 485-2 of the second internal insulating member 485, 1 It is insulated and spaced apart from the first electrode plate 420 coupled to the lower surface of the insulating protrusion 481-2 and the second lower protrusion 485-2.

The second electrode plate 430 is prevented from falling upward by a fixing ring 470 having a shape corresponding to the inner edge of the square cylindrical case 400, which is fixed to the upper surface of the first internal insulating member 481. . The fixing ring 470 may be screwed to the upper surface of the inner wall insulating member 480.

When the contact pin 434 of the second electrode plate 430 is seated on the internal insulating member 481 and the second internal insulating member 485, it contacts the inner wall of the square cylindrical case 410 and is electrically conductive. It is electrically connected to the ground terminal 450 formed on the outer surface of the case 410.

As shown in FIGS. 17 to 17, the modular discharge dust collector 500 according to the present invention includes a cylindrical case 510 in the form of a rectangular parallelepiped with open top and bottom, and metal wires 521 arranged side by side at predetermined intervals. an ionization unit 550 including a linear discharge electrode 520 and a counter electrode plate 555 disposed between metal lines 521 forming the linear discharge electrode 520; and a plurality of discharge plates 560 to which high voltage is applied to collect ionized particles discharged from the ionization unit 550, and dust collection plates 570 disposed between the discharge plates 560. It is a retractable dust collection module consisting of a dust collection unit 590 including a plate part 580.

The ionization unit 550 disposed at the bottom of the modular discharge dust collector 500 generates a positive corona to charge particles flowing in from the bottom into (+) particles, and is located at the top of the dust collection module 500. The dust collection unit 590 is disposed to collect (+) charged particles by attaching them to a (-) charged dust collection plate.

The cylindrical case 510 is made in the form of a rectangular parallelepiped with open top and bottom, and has an additional open front, with a front upper corner 510-1, a rear upper corner 510-2, and both upper corners 510-3. It has a front lower edge (510-4), a rear lower edge (510-5), and both lower edges (510-6), four upper vertices where the upper edge meets the upper edge, and four upper vertices where the lower edge meets the lower edge. It has a lower vertex.

Plastic insulating members 511 are screwed to the upper four vertices and lower four vertices of the cylindrical case 510 to the flange 512 of the cylindrical case 510 for insulation from the air purifier body and for sliding into the main body. do.

A docking plate 513 connected to the ground terminal and high voltage terminal of the main body is attached to the front side of the cylindrical case 510. A grounding plate 514 is fixed to the top of the docking plate 513, and two high voltage terminals 515 are formed in the middle of the docking plate 513.

The grounding plate 514 has a flat plate shape and is seated on the grounding plate seating portion 514' formed on the upper front of the docking plate 513, and is attached to the front of the cylindrical case 510 together with the docking plate 513. It is fixed with a rivet at the upper edge (510-1) and electrically connected to the cylindrical case (510).

The two high-voltage terminals 515 are bent into a 'ㄷ' shape and inserted into the high-voltage terminal groove 515' formed on the docking plate 513, and each extends in the vertical direction.

Inside the cylindrical case 510, the crossbars 517 crossing the cylindrical case 510 are made of a conductive material, and a total of four, one each at the top and bottom of the front and top and bottom of the rear, are installed. The front cross bar 517 is a conductive cross bar 517 consisting of a front upper cross bar 517-1, a front lower cross bar 517-2, a rear upper cross bar 517-3, and a rear lower cross bar 517-4. Both ends are inserted and fixed into grooves formed in the insulating bracket 518, which is fixed through the left and right side walls of the cylindrical case 510 so as to be insulated from the cylindrical case 510.

Among the conductive cross bars 517, the two front conductive cross bars 517-1 and 517-2 located above and below the front of the cylindrical case 510 have two high-voltage terminals 515 penetrating the docking plate 513, respectively. High voltage is applied to objects that are in contact and electrically connected to them.

The ionization unit 550 includes a linear discharge electrode 520 consisting of a plurality of metal wires 521 whose front and rear ends are fixed in parallel at equal intervals on a metal support 522, a front lower edge 510-4, and a rear lower corner. The front and rear ends are fixed in parallel at the edge 510-5 at equal intervals between metal wires, and are composed of a plurality of counter electrode plates 555 made of metal.

In the ionization unit 550, the metal wire 521 of the linear discharge electrode 520 is energized by a metal support bar 522 fixed to the front lower cross bar 517-2, and the front lower cross bar 517-2 is a docking plate. Among the two high-voltage terminals 515 fixed to (513), electricity is applied by contacting the high-voltage terminal 515-2 extending to the lower part, and the high-voltage terminal 515 is in contact with the high-voltage terminal of the air purification device to apply high voltage. do.

The front and rear ends of the counter electrode plate 555 of the ionization unit 550 are fixed to the front lower edge 510-4 and the rear lower edge 510-5 of the cylindrical case 510 and are electrically connected, and the cylindrical case 510 ) is grounded to the ground terminal of the main body through the grounding plate 514 fixed by a rivet penetrating the front upper edge 510-1.

The dust collector 590 includes a plurality of discharge plates 560 that are energized to the high voltage terminal of the main body to apply a high voltage, and dust collection plates that are alternately arranged with the discharge plates 560 and are electrically connected to the ground terminal of the main body and are grounded. It includes a plate portion 580 consisting of 570 elements.

The discharge plate 560 is made of rectangular unit discharge plates 561 in which curved discharge protrusions 562 are formed on the front and rear upper portions and a plurality of discharge plate through-holes 563 are formed. The through hole 563 of the plate 561 includes a first discharge through hole 563-1 having a first diameter D1 and a second discharge through hole 563 having a second diameter D2 larger than the first diameter. It consists of -2).

The dust collection plate 570 is made of rectangular unit dust collection plates 571 with a plurality of dust collection plate through holes 573 formed, and the through hole 573 of the unit dust collection plate 571 has a first diameter ( It consists of a first dust collection through hole (573-1) having a diameter (D1) and a second dust collection through hole (573-2) having the second diameter (D2).

The first discharge through hole (563-1) and the second dust collection through hole (573-2) are coaxially aligned, and the second discharge through hole (563-2) and the first dust collection through hole (573-1) are coaxial. They are aligned and penetrated left and right by penetrating rods 591 having a diameter corresponding to the first diameter D1. Accordingly, the through rod 591 passing through the holes in which the first discharge through hole 561-1 and the second dust collection through hole 573-2 are aligned comes into contact only with the discharge plate, and the second discharge through hole 573-2 contacts only the discharge plate. The through rod 591 passing through the holes in which the (561-2) and the first dust collection through hole (573-1) are aligned comes into contact only with the dust collection plate.

Insulating spacing members 581 are installed between the unit discharge plate 561 and the unit dust collection plate 571 forming the plate portion 580.

In the plate portion 580, the number of unit dust collection plates 570 is one more than that of the discharge plates 560, and dust collection unit plates are located at both ends.

Insulating protection plates 592 are positioned on both sides of the plate portion 580, and both ends of the through rod 591 are inserted and fixed inside to form an integrated dust collection portion 590.

The dust collection unit plate 570 located at both ends of the plate portion 580 has ground protrusions 593 formed on the surface opposite to the protection plate 592, and protrudes from both sides through the protection plate 592.

A locking protrusion 595' is formed on the protective plate 592 and protrudes outward through the case cutout 594 formed on both sides of the cylindrical case 510, and a latch ring is attached to both outer surfaces of the cylindrical case 510. It is firmly fixed by (595).

In this integrated dust collection unit 590, the discharge protrusion 562 of the unit discharge plate 561 protrudes in the front and rear direction, and the discharge protrusion 562 is connected to the high voltage terminal 515 fixed to the docking plate 513 and the front. In contact with the lower cross bar 517-2, it is connected to the high voltage terminal of the main body, and the unit discharge plates 561 are electrically connected to other unit discharge plates 561 by the through rod 591.

In addition, the unit dust collection plates 571 of the integrated dust collection unit 590 are electrically connected to other unit dust collection plates 571 by the through rod 591, and the unit dust collection plates 571 at both ends have ground protrusions. It is grounded to the inner wall of the cylindrical case 510 through 593 and connected to the ground terminal of the docking plate 513 attached to the cylindrical case 510.

Accordingly, the particles ionized by the ionization unit 550 are collected on the unit dust collection plate 571 of the dust collection unit 590. When dust collects and becomes contaminated on the dust collection plate 571, separate the integrated dust collection unit 590 from the dust collection module 500 by loosening the latch ring 595, wash the separated integrated dust collection unit 590 with water, dry it, and use it. do.

As shown in Figure 28, a modular streamer discharge device 400 in the internal flow path, a modular discharge dust collector 500 installed on the downstream side of the modular streamer discharge device, and a modular discharge dust collector The negative pressure generator 10 including the DBD plasma module 700 installed on the downstream side of 500 operates in the following manner.

First, the negative pressure machine 10 is installed in the hospital room 1, and a duct 20 in the form of a corrugated pipe extending from the hospital room 1 to the outside of the hospital 2 is connected to the air outlet 170 of the negative pressure machine 10. do. The corrugated pipe-shaped duct has a length of 3 to 4 m.

When the negative pressure machine 100 operates through the control window formed on the front of the negative pressure machine 10, the negative pressure blower 800 first operates to suck in indoor air.

Indoor air is introduced into the negative pressure machine 10 while containing live bacteria and/or viruses. Large dust is removed in the pre-filter 300, and fine particles contained in the air pass through without being filtered. Fine particles (approximately 2 microns or less) consist of pathogenic fine particles such as bacteria and viruses and non-pathogenic fine particles such as fine dust.

Pathogenic fine particles move upward and pass through the tubular cell-type streamer discharge device 400, and viruses and bacteria contained in the air are killed and inactivated by active species such as radicals generated by the streamer-type discharge. , or after being disabled, is discharged to the top with air. Due to the high flow rate of the negative pressure machine, some pathogenic microparticles pass through untreated. Non-pathogenic fine particles do not react with the cell-type streamer discharge device and are discharged to the top along with the air.

The air that passes through the tubular cell-type streamer discharge device 400 passes through the dust collector 500, and the treated or untreated fine particles contained in the air are charged and attached to the dust collection plate by electrostatic attraction and are removed. Due to the high flow rate of the negative pressure machine, some pathogenic microparticles pass through untreated.

As the untreated pathogenic fine particles contained in the air that passed through the dust collector 500 pass through the DBD plasma module 700, the untreated pathogenic fine particles are further processed by ozone generated in the DBD plasma reactor and the activated photocatalyst. Due to the high flow rate of the negative pressure machine, very small amounts of pathogenic fine particles pass through without being processed and flow along the duct 20.

As the ozone generated from the DBD plasma module 700 flows along the duct 20, it reacts with and completely disposes of trace amounts of remaining pathogenic fine particles inside the duct, so pathogenic fine particles are not emitted from the duct and negative pressure is generated. Concerns about secondary infection due to the use of the device were resolved.

1: Hospital room
2: Outside the hospital
10: Multi-functional negative pressure device
20: duct
100: body part
200: Inner bracket
300: Pre-filter
400: Modular streamer discharge device
500: Dust collection device
700: DBD plasma module
800: Negative pressure blowing fan
900: Control unit

Claims (15)

DBD (Dielectric Barrier Discharge) plasma reactor,
a perforated photocatalyst coating member surrounding the DBD plasma reactor, and
It includes a fixing member to which the DBD plasma reactor and the photocatalyst coating member are fixed, where:
The plasma reactor includes a cylindrical insulator, a conductive rod installed inside the cylindrical insulator at a substantially constant predetermined distance from the cylindrical insulator, and a reticulated external electrode installed outside the cylindrical insulator, and when discharging, ozone and ultraviolet rays are generated. emits,
The perforated photocatalyst coating member consists of a perforation member with a plasma reactor insertion hole formed on one side and a plurality of perforations formed on the surface, and a photocatalyst coating layer, and
The fixing member has a disc or polygonal plate-shaped fixing body to which a photocatalyst coating member is coupled to one side, and a reactor accommodating hole capable of accommodating the plasma reactor,
The ozone and substances generated by the photocatalyst coating member move along the air flow induced by the blower,
A DBD optical plasma module, characterized in that the ultraviolet rays penetrate the reticulated external electrode and activate the photocatalyst. According to paragraph 1,
A DBD optical plasma module, characterized in that the cylindrical insulator forming the DBD plasma reactor is a test tube-type insulator made of glass with one side closed in a hemispherical shape and the other side having an opening. According to paragraph 1,
A DBD optical plasma module, wherein one or more spacing rings are inserted into the conductive rod body to maintain a constant gap between the conductive rod body and the cylindrical insulator, and a second power line is connected to the conductive rod body. A mobile negative pressure machine comprising the DBD optical plasma module according to any one of claims 1 to 3, and a blower. According to paragraph 4,
The negative pressure machine includes a body portion having an air inlet and an air outlet, and an internal flow path connecting the air inlet and the air outlet. A modular streamer discharge device installed in the internal flow path; A modular discharge dust collection device installed downstream of the modular streamer discharge device; Negative pressure blowing fan; And a control unit,
The DBD plasma module is a mobile negative pressure device installed on the downstream side of a modular discharge dust collection device.
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