KR20210040596A - Plasma sterilizer - Google Patents

Abstract

The present invention relates to a plasma sterilization device. The present invention comprises: cases (10, 30) having flow spaces (13, 33) through which air flows therein, and having an intake port (12) and an exhaust port (32) connected to the flow spaces (13, 33); a plasma generating module (50); a filter module (60); and a circulation module (70). In addition, opening/closing modules (36, 40) in the cases (10, 30) selectively opens a part of the cases (10, 30) so that so that an intermediate space (S) between the plasma generating module (50) and the filter module (60) is connected to the outside. The plasma sterilization device can decompose ozone harmful to a human body by using the filter module (60) while sterilizing the bacteria of a target (P) to be sterilized.

Description

Plasma sterilizer {PLASMA STERILIZER}

The present invention relates to a plasma sterilization apparatus, and more particularly, to a sterilization apparatus capable of sterilizing bedding and the like using plasma and removing ozone generated during the sterilization process.

Conventional sterilization devices are used to eradicate bacteria or pests (e.g., house dust mites, molds, etc.) adhering to shoes, tableware, toothbrushes, bedding, clothing, etc. using ultraviolet rays, and to collect and remove the eradicated bacteria or pests.

For example, in Korean Patent Application Publication No. 10-2001-0039797, the bedding is sterilized by ozone and ultraviolet rays generated from an ozone generator, and the structure generates ozone by using ultraviolet rays installed on the top. This prior art has a problem that the sterilization time is very long for sufficient sterilization because the amount of ozone generated by ultraviolet rays is very small, and there is a concern that it may be damaged due to the oxidizing power of ozone when the target to be sterilized such as bedding is exposed to ozone for a long time. There is also.

In addition, Korean Patent Laid-Open Publication No. 10-2005-0087990 discloses a cleaner that sterilizes bedding using an ultraviolet lamp, which also uses ultraviolet rays, so the sterilization power is low, and it is difficult to sterilize the same object for a long time due to the characteristics of the cleaner.

Meanwhile, recently, plasma other than ultraviolet rays is used for sterilization, and electrons and radicals generated through plasma discharge sterilize objects with high oxidizing power. _{However, in the plasma generating device, there is a problem that ozone (O 3} ) and nitrogen oxide, which are harmful to the human body, are generated together as by-products. In particular, ozone has a very strong reactivity, so it reacts well with other substances around it, but there is a problem that it has a fatal and adverse effect on the human body. Of course, it is possible to operate the ozone removal device separately, but in this case, there is a problem that the number of equipment increases and the sterilization operation becomes cumbersome.

Republic of Korea Patent Publication 10-2001-0039797 Republic of Korea Patent Publication 10-2005-0087990

The present invention is to solve the problems of the prior art as described above, the object of the present invention is to increase the sterilization effect of the object to be sterilized by using plasma discharge, but after the sterilization is finished, ozone can be removed using a filter. It is to provide a plasma sterilization device capable of.

Another object of the present invention is to enable the two functions of sterilization through plasma discharge and ozone removal to be implemented by operating one plasma sterilization device.

Another object of the present invention is to miniaturize the plasma sterilization apparatus while increasing the sterilization effect.

According to the features of the present invention for achieving the above object, the present invention provides a case in which there is a flow space through which air flows, and an intake port and an exhaust port connected to the flow space, a plasma generation module, and a filter module. And a circulation module. In addition, the opening/closing module in the case selectively opens a part of the case so that the intermediate space between the plasma generation module and the filter module is connected to the outside. Such a plasma sterilization device sterilizes bacteria to be sterilized while also decomposing ozone harmful to the human body by using a filter module.

And, the case is composed of a first case in which the intake port is installed and the plasma generation module is installed, and a second case in which the exhaust port is installed and the filter module is installed, and the opening/closing module is between the first case and the second case. It is installed so as to cross. Accordingly, the plasma sterilization device simply manipulates the case so that (i) air passes through only the plasma generation module in the sterilization mode, and (ii) air passes through the filter module in the ozone removal mode after sterilization is finished. have.

In addition, the plasma generation module includes a first electrode to which power is applied from a power source, and a second electrode that is spaced apart from the first electrode to create a discharge space between the first electrode, the first electrode or the second electrode. A dielectric is coupled to at least one of the electrodes. That is, since the plasma generation module for generating plasma generates plasma in a dielectric barrier discharge method, a large amount of ozone can be generated in a short time.

In addition, since the plasma generation module is configured by connecting a plurality of discharge units in parallel, it is possible to remove allergens and microorganisms that cause allergies by generating high concentration of ozone.

In addition, the plurality of discharge units are arranged in parallel with the longitudinal direction of the flow space connecting the intake port and the exhaust port to facilitate the flow of air and shorten the sterilization time so that the object to be sterilized is exposed to ozone for a long time and is damaged. Can be prevented.

In the present invention, the plasma generation module for generating plasma is made by stacking a plurality of discharge units, but the discharge units are connected in parallel. In particular, since the first electrode and the second electrode constituting the discharge unit protrude in opposite directions, such a parallel connection can be easily implemented.

In addition, an ozone measuring sensor is installed in the case, and the control unit can stop the ozone removal mode in which the outdoor air introduced into the intake port is discharged to the exhaust port through the filter module when the ozone concentration measured by the ozone measuring sensor is less than a reference value. have. As described above, the sterilization apparatus of the present invention includes an ozone measurement sensor, and (i) stops sterilization when ozone exceeds the reference value in the sterilization mode, and (ii) stops the sterilization when the ozone concentration is less than the reference value in the ozone removal mode. Can be stopped.

In addition, the circulation module is located in the intermediate space or is installed at a position closer to the plasma generation module than the intermediate space, and includes a flow fan that is rotated by a motor. In this way, both the sterilization mode and the ozone removal mode can be executed with a single flow fan located between the plasma generation module and the filter module.

The plasma sterilization apparatus according to the present invention as salpinned above has the following effects.

The plasma sterilization apparatus of the present invention generates plasma that has a sterilization effect superior to ultraviolet rays, sterilizing bacteria (eg, mold, etc.) adhering to the object to be sterilized, such as blankets, bed sheets, and mattresses, while also using a filter that is harmful to the human body. It can completely capture ozone and decompose it harmlessly to the human body. Therefore, the present invention ensures both high sterilization efficiency and safety.

In addition, the plasma sterilization apparatus according to the present invention operates the case so that (i) air passes through only the plasma generation module in the sterilization mode, and (ii) air passes through the filter module in the ozone removal mode after sterilization is finished. I can. In other words, it is possible to implement both functions of sterilization and ozone removal using a single plasma sterilization device. In order to implement these two functions, the user simply needs to open or rotate a part of the case. There is an improved effect.

In addition, the plasma generation module for generating plasma in the present invention generates plasma by a dielectric barrier discharge method, and in particular, a plurality of discharge units are stacked. Therefore, it is possible to quickly and effectively sterilize the target to be sterilized by generating a large amount of ozone within a short time.

In particular, the plasma generation module of the present invention can remove allergens and microorganisms that cause allergies by generating high-concentration ozone, thereby greatly improving sterilization efficiency.

In addition, as the sterilization time is shortened by using the plasma generating module of the present invention, there is an effect of preventing damage due to exposure of the target to be sterilized to ozone for a long time.

In the present invention, the plasma generation module for generating plasma is made by stacking a plurality of discharge units, but the discharge units are connected in parallel, so that the sterilization ability is very high, and the first electrode and the second electrode constituting each discharge unit are in opposite directions. Since it is projected, such a parallel connection can be easily implemented.

In addition, the sterilization apparatus of the present invention includes an ozone measurement sensor, (i) stops sterilization when ozone exceeds the reference value in the sterilization mode, and (ii) stops the ozone removal mode when the ozone concentration is less than the reference value in the ozone removal mode. I can make it. Therefore, the sterilization device can be appropriately automatically controlled according to the ozone concentration, and there is an effect of improving stability and ease of use.

In addition, the present invention can execute both the sterilization mode and the ozone removal mode with a single flow fan located between the plasma generation module and the filter module. Therefore, since there is no need to install a separate driving fan for each mode, the number of parts is reduced, and since the flow fan is located in the center of the inner space, the fan noise transmitted to the outside can be reduced.

1 is a perspective view showing the configuration of an embodiment of a plasma sterilization apparatus according to the present invention.
2 is a cross-sectional view taken along line II′ of FIG. 1.
3(a) and 3(b) are cross-sectional views showing states of the sterilization mode and the ozone removal mode of the embodiment shown in FIG. 1, respectively.
Figure 4 is a perspective view showing the configuration of the plasma generation module constituting the embodiment shown in Figure 1;
5 is a perspective view showing two of a plurality of module parts constituting the plasma generation module shown in FIG. 4.
6(a) and 6(b) are perspective views each showing an exploded state and a combined state of any one of a plurality of module parts constituting the plasma generation module shown in FIG. 4;
7 is a circuit diagram schematically showing the circuit configuration of the plasma generation module shown in FIG. 4.
8 is a circuit diagram schematically showing the circuit configuration of another embodiment of the plasma generation module constituting the plasma sterilization apparatus according to the present invention.
9 is a perspective view showing the configuration of a filter module constituting the embodiment shown in FIG.
10 is a block diagram schematically showing the configuration of the embodiment shown in FIG.
Figure 11 is a cross-sectional view showing another embodiment of the opening and closing module constituting the plasma sterilization apparatus according to the present invention.
12 is a cross-sectional view showing another embodiment of the opening and closing module constituting the plasma sterilization apparatus according to the present invention.
13 is a perspective view showing another embodiment of a case constituting the plasma sterilization apparatus according to the present invention.
14 is a perspective view showing a state in which bedding is sterilized using an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible, even if they are indicated on different drawings. In addition, in describing the embodiments of the present invention, if it is determined that a detailed description of a related known configuration or function obstructs the understanding of the embodiments of the present invention, the detailed description thereof will be omitted.

In addition, in describing the constituent elements of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are for distinguishing the constituent element from other constituent elements, and the nature, order, or order of the constituent element is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to that other component, but another component between each component It should be understood that may be “connected”, “coupled” or “connected”.

The present invention relates to a plasma sterilization apparatus. The present invention can sterilize bedding, etc. using plasma _{and remove ozone (O 3} ) generated during the sterilization process, and this function can be implemented with a single sterilization device. Hereinafter, an embodiment of the present invention will be described with a focus on a structure for implementing such sterilization and ozone removal functions. For reference, the sterilization mode to be described below refers to a state in which air is sterilized using the plasma generation module 50, and the ozone removal mode refers to a state in which ozone (O ₃ ) is removed using the filter module 60. it means.

FIG. 1 shows a configuration of an embodiment of a plasma sterilization apparatus according to the present invention, and FIG. 2 shows the internal configuration of FIG. 1 in a cross-sectional view. Looking at this, the skeleton of the plasma sterilization apparatus of the present invention is made by cases 10 and 30. The cases 10 and 30 have a substantially cylindrical shape, and there are flow spaces 13 and 33 with an empty space therein. The cases 10 and 30 do not necessarily have a cylindrical shape, and the cases 10 and 30 may be transformed into various shapes as long as air is sucked in from the outside and air is discharged back to the opposite side. For example, FIG. 13 shows an example in which the cases 10 and 30 are formed in a capsule-like shape. As shown in FIG. 13, the front and rear sides of the cases 10 and 30 may each be implemented in a curved shape.

Referring to FIG. 2, in this embodiment, the cases 10 and 30 are composed of a first case 10 and a second case 30, which are symmetrical and continuous with each other. The first case 10 and the second case 30 form a single unified shape as shown in FIG. 1. As shown below, the first case 10 and the second case 30 are separated from each other, so that the intermediate space S in the middle may be connected to the outside. For reference, reference numeral PL denotes a reference line where the first case 10 and the second case 30 are separated.

The first case 10 has an intake port 12. The intake port 12 is a hole through which outside air is introduced, and may be formed of a plurality of small holes penetrating through the front surface 11 of the first case 10 as shown in FIG. 1. Of course, the size and shape of the holes constituting the intake port 12 may be different. For example, the intake port 12 may have a slit shape that extends long in one direction, and in some cases, a lid (not shown) for shielding them may be further provided.

There is a first flow space 13 inside the first case 10. The first flow space 13 is a kind of empty space inside the first case 10, in which a plasma generation module 50, which will be described below, is installed. The first flow space 13 is a space in which the plasma generation module 50 is installed, and at the same time, air sucked through the intake port 12, more precisely, is a space in which air to be contaminated to be purified flows.

A first inner housing 15 is installed in the first flow space 13 of the first case 10, and the first inner housing 15 may be installed in close contact with the inner surface of the first case 10. have. In this embodiment, the first inner housing 15 has a substantially ring shape corresponding to the first flow space 13, and a plasma generating module 50 is installed therein. The first inner housing 15 may be provided with a control unit 100 (refer to FIG. 10) and a power supply 57 to be described below, and the first inner housing 15 is transferred to the control unit 100 or the power supply unit 57. May be replaced.

A display unit 18 is provided on an outer surface of the first case 10. The display unit 18 is configured to be recognizable from the outside, such as a liquid crystal display, so that the user can know the current state. The display unit 18 may display a sterilization mode/ozone removal mode, which is a mode in which the present invention is driven, a current time, a remaining operating time, and a remaining status of the power supply unit 57. In addition, the display unit 18 may function as an input unit, and may be configured as a touch display or include a separate button so that a user can input an operation command. The display unit 18 is connected to the control unit 100 to be described below.

A second case 30 is assembled to the first case 10. The second case 30 is assembled with the first case 10 to constitute the entire case 10 and 30. The second case 30 has a structure that is symmetrical with the first case 10, and when assembled with the first case 10, forms an outer unit of a unified shape. In this embodiment, the second case 30 has a cylindrical shape, but can be transformed into various shapes together with the first case 10.

An exhaust port 32 is provided on the rear surface 31 of the second case 30. Like the inlet, the exhaust port 32 may be formed of a plurality of small holes penetrating through the rear surface 31 of the second case 30. Of course, the size and shape of the holes constituting the exhaust port 32 may be different. For example, the exhaust port 32 may have a slit shape that extends long in one direction, and in some cases, a lid (not shown) for shielding them may be further provided.

In this embodiment, the intake port 12 and the exhaust port 32 face each other. Accordingly, the outside air introduced through the intake port 12 may flow in one direction and be discharged through the exhaust port 32. Unlike this, the intake port 12 and the exhaust port 32 may be disposed in a direction not facing each other, but the intake port 12 and the exhaust port 32 are preferably facing each other for a smooth flow of air.

There is a second flow space 33 inside the second case 30. The second flow space 33 is a kind of empty space inside the second case 30, in which a filter module 60 to be described below is installed. The second flow space 33 is a space in which the filter module 60 is installed, and also a space through which air to be discharged through the exhaust port 32, that is, purified air, is discharged.

The second flow space 33 is connected to the first flow space 13 described above to form one flow space 13 and 33. The intermediate space S, which will be described below, may also be viewed as a part of the flow spaces 13 and 33.

A second inner housing 35 is installed in the second flow space 33 of the second case 30, and the second inner housing 35 may be installed in close contact with the inner surface of the second case 30. have. In this embodiment, the second inner housing 35 has a substantially ring shape corresponding to the second flow space 33, and a filter module 60 is installed therein. The second inner housing 35 may be provided with a control unit 100 and a power unit 57 to be described below, or the second inner housing 35 may be replaced with the control unit 100 or the power unit 57. .

Looking at the second inner housing 35, the second inner housing 35 has an extension groove 36. The extension groove 36 is an empty space formed inside the second inner housing 35 and extends along a direction in which the first case 10 and the second case 30 are assembled. The extension groove 36 can be viewed as a part of the opening/closing module 36, 40 to be described below, and the extension groove 36 constitutes a part of the opening/closing module 36, 40, and the first case 10 And the second case 30 may be separated from each other or assembled.

The extension groove 36 may be made in various shapes according to the shape of the extension bridge 40 constituting the opening and closing modules 36 and 40. For example, when the extension bridge 40 is a bar-shaped extension bar, the extension groove 36 also becomes a narrow and long groove to correspond to the bar shape, and the extension bridge 40 is installed around the intermediate space (S). In the case of an extension ring, the extension groove 36 may also be a ring-shaped groove surrounding the exhaust port 32. In this embodiment, the extension bridge 40 is an extension bar, and the extension groove 36 is also elongated in one direction to correspond thereto.

When the extension bridge 40 constituting the opening/closing module 36 and 40 exits from the extension groove 36, the first case 10 and the second case 30 are opened to open the intermediate space S to the outside. Can be connected with. This state is shown in Fig. 3(a). And when the extension bridge 40 is inserted into the extension groove 36 again, the first case 10 and the second case 30 are assembled to each other, and the intermediate space S is closed. Such a state is shown in Fig. 3(b).

As shown in Figure 3 (a), the extension bridge 40 constituting the opening and closing modules 36 and 40 is an extension bar, the extension bridge 40 has one end fixed to the first case 10 and the opposite side The end is connected to the second case 30. More precisely, one end of the extension bridge 40 is fixed to the first inner housing 15, and the other end is inserted into the extension groove 36 of the second inner housing 35, but slides without being fixed. Since the first case 10 and the second case 30 are assembled in a form capable of entering and exiting, the first case 10 and the second case 30 can be kept connected to each other.

It has been described that the extension bridge 40 and the extension groove 36 constitute the opening/closing modules 36 and 40, but the opening/closing modules 36 and 40 themselves may be viewed as a part of the cases 10 and 30. In addition, the opening and closing modules 36 and 40 can be modified in various ways, and other forms will be described again below.

Referring to FIG. 2, a plasma generating module 50 is installed in the first flow space 13 of the first case 10. The plasma generation module 50 is installed in the first flow space 13 close to the intake port 12 so as to be connected to the intake port 12 to generate a plasma discharge. That is, the plasma generation module 50 serves to sterilize the air through plasma discharge when external contaminated air is introduced. The plasma generation module 50 generates a large amount of OH radicals and ozone (O ₃ ) by forming a strong plasma region, and removes contaminants by using them.

The configuration of the plasma generation module 50 is well illustrated in FIG. 4. Referring to FIG. 4, in the plasma generation module 50, a module housing 51 and a plurality of discharge units 53 disposed inside the module housing 51 are disposed in parallel. A plurality of the discharge units 53 are stacked at intervals from each other, and each of the discharge units 53 may generate plasma. The arrow in FIG. 4 is the direction in which air is introduced.

Referring to FIG. 5, the configuration of the discharge unit 53 includes a first electrode 53A and a second electrode 53B. The first electrode 53A is a part that receives power from the power supply unit 57, and the second electrode 53B is spaced apart from the first electrode 53A to provide a discharge space between the first electrode 53A and the first electrode 53A. By making 59, it is connected to the different polarity of the power supply 57 or is grounded. A portion for connection with the power supply 57 may be installed on the side 52 of the module housing 51, and the portion for this connection may protrude outward from the side 52, but the inner side of the side 52 Or may exist inside.

At this time, a dielectric 54 is coupled to at least one of the first electrode 53A and the second electrode 53B. Referring to FIG. 5, a discharge part 53 is shown. As shown, the discharge part 53 is formed by forming a pair of a first electrode 53A and a second electrode 53B. In addition, a dielectric 54 is externally coupled to both the first electrode 53A and the second electrode 53B. As described above, both of the first electrode 53A and the second electrode 53B may be combined with the dielectric 54, but only one of the first electrode 53A and the second electrode 53B may be combined with the dielectric 54. Here, the dielectric 54 is an insulating material, and in this embodiment constitutes a ceramic barrier.

Referring to FIG. 6, the first electrode 53A is composed of an electrode plate 55 made of a metal material located therein, and a dielectric 54 covering the electrode plate 55. The dielectric 54 is again on the upper side. It is composed of a dielectric layer 54a and a lower dielectric layer 54b. Although the first electrode 53A is exemplified in FIG. 6, the second electrode 53B may also have the same structure. In this embodiment, the metal plate is a copper coil.

In this way, an empty space between the first electrode 53A and the second electrode 53B creates a discharge space 59, and plasma is generated in the discharge space 59. The intensity of the plasma generated is proportional to the intensity of the electric field. Ions are generated from air by the plasma generated by the plasma generation module 50. The generated ions remove pollutants from the outside air introduced through the circulation module 70 to be described below. The air from which the pollutants have been removed is discharged to the outside through the through hole E opened by the opening/closing modules 36 and 40. In addition, ions may be discharged together to further sterilize an external object to be sterilized (see P, Fig. 14).

As described above, the plasma generation module 50 of the present invention uses a dielectric barrier discharge (DBD) method. 5 shows one discharge part 53 in the dielectric barrier plasma electrode structure according to the present invention. As shown in FIG. 5, the plasma generation module 50 of the present invention is constructed by stacking discharge units 53 composed of two parallel flat plate metal electrodes 53A and 53B.

In addition, as described above, one of the first electrode 53A and the second electrode 53B is covered with a dielectric 54 layer. When an insulator is used, in the case of direct current power, since it is impossible to flow current through the electrode, plasma can be generated using alternating current (AC) power. For stable plasma generation, the interval between electrodes is limited to several millimeters, and the plasma gas flows through this interval, that is, between the discharge spaces 59.

In Fig. 7, there are a total of three discharge units 53, specifically, a total of three first electrodes 53A1, 53A2, and 53A3, and a total of three second electrodes 53B1, 53B2, and 53B3 between them. Is placed. Further, the first electrode 53A and the second electrode 53B are covered with a dielectric 54. At this time, the first connection end 55' at one end of the first electrode 53A is connected to the power supply 57, and the second connection end 55' at one end of the second electrode 53B is grounded. . Of course, the second connection end 55 ′ of the second electrode 53B may be connected to a polarity different from that of the power supply unit 57 to which the first electrode 53A is connected.

As shown in FIG. 7, the first connection end 55 ′ of the first electrode 53A constituting the discharge part 53 and the second connection end 55 ′ of the second electrode 53B are opposite to each other. Protrudes. In addition, since the first connection end 55 ′ and the second connection end 55 ′ are connected to each other, the plurality of discharge parts 53 may be connected in parallel. In this way, the first connection end 55 ′ and the second connection end 55 ′ protrude in opposite directions to facilitate parallel connection.

More precisely, the plurality of first connection ends 55' are connected by the first connection means L1 to receive power from the power supply 57, and the plurality of second connection ends 55' are the second connection means. It is connected by (L2) and is grounded. Since the plasma generating module 50 connected in parallel provides a strong sterilizing power, the sterilization time is shortened, and the target P to be sterilized can be prevented from being damaged by exposure to ozone for a long time. Reference numeral 56 denotes a spacer for spaced apart between the first electrode 53A and the second electrode 53B and between each discharge portion 53.

In this embodiment, the plasma generation module 50 includes a plurality of discharge units 53 composed of the first electrode 53A and the second electrode 53B, but the plurality of discharge units 53 are stacked on each other. , The discharge space 59 is open to connect between the circulation modules 70 in the intake port 12. That is, as shown in FIG. 4, the plurality of discharge parts 53 are arranged in parallel with the longitudinal direction of the flow spaces 13 and 33 connecting the intake ports 12 and the exhaust ports 32. Through this, not only the smooth flow of air is possible, but also more air can be sterilized as it passes through the discharge space 59. The arrows in FIG. 4 indicate the flow direction of air.

On the other hand, FIG. 8 shows another embodiment of the plasma generation module 50 of the present invention. As shown in FIG. 8, the first electrode 53A and the second electrode 53B constituting the plasma generation module 50 are shown. ) Are disposed to face each other with the dielectric 54 interposed therebetween. Further, the second electrode 53B is covered by the dielectric 54, but the dielectric 54 is bonded to only the portion of the first electrode 53A facing the second electrode 53B. And, unlike the previous embodiment, the first electrode 53A is grounded, and the second electrode 53B is connected to the power supply unit 57.

Referring back to FIG. 2, a filter module 60 is installed in the second flow space 33 of the second case 30. The filter module 60 is installed in the second flow space 33 and closer to the exhaust port 32 than the plasma generating module 50. _{The filter module 60 serves to decompose ozone (O 3} ) generated in the plasma generation module 50 and discharge it to the exhaust port 32. That is, the filter module 60 functions to remove _{ozone (O 3} ) generated by the plasma generation module 50 previously. Since the filter module 60 is detachably assembled to the exhaust port 32, it can be replaced when the life span is over.

3 and 9, the filter module 60 has a filter body 61 having a substantially hexahedral shape, and a plurality of holes 65 are formed. In the process of passing through the hole 65, ozone (O ₃ ) of the air may be removed. In the drawing, the holes 65 are shown to be visible, but in reality the holes 65 are very fine and may not be visible to the naked eye.

In this embodiment, the filter module 60 is made of activated carbon and a catalyst. More precisely, the filter module 60 is configured by coating a catalyst on activated carbon, which is a porous support. Here, the catalyst is manganese dioxide (MnO ₂ ), copper oxide (CuO), an artificial enzyme catalyst, etc. to constitute a deodorization filter. The filter module 60 uses the fact that various odor components present in the air are mainly hydrocarbon compounds composed of carbon and hydrogen, and absorbs and removes odor components with activated carbon to which the hydrocarbon compounds can be easily bonded.

More specifically, the filter module 60 filters ozone (O ₃ ) generated by the plasma generation module 50 and ions to which odor substances are attached. In this embodiment, the filter module 60 is formed including activated carbon and manganese dioxide (MnO ₂ ), but the filter module 60 is iodine (I), silver (Ag), aluminum (Al), It may further contain at least one of manganese (Mn), zinc (Zn), iron (Fe), lithium (Li), and calcium (Ca). By the filter module 60 formed including active carbon and manganese dioxide (MnO ₂ ), the odor material passed through the plasma generation module 50 and attached to the ions, and the plasma generation module 50 _{It is possible to effectively remove ozone (O 3} ), nitrogen oxides (NOx), etc. generated as by-products from

_{Specifically, ozone (O 3} ) generated as a by-product in the plasma generation module 50 is destroyed by the strong adsorption force of the activated carbon of the filter module 60. In addition, nitrogen monoxide (NO) generated as a by-product in the plasma generation module 50 is easily combined with oxygen on the surface of the filter module 60 to change into nitrogen dioxide (NO2), which is again in the form of nitric acid (HNO3). It accumulates at (60). Since the amount of nitrogen compounds such as nitrogen monoxide (NO) generated as a by-product in the plasma generation module 50 _{is approximately 0.01 times that of ozone (O 3} ) generated together, the effect can be said to be small.

For reference, as shown in FIG. 2, in this embodiment, the plasma generating module 50 is installed in the first flow space 13 so as to be spaced apart from the intake port 12, and the filter module 60 is It is installed inside the second flow space 33 so as to be spaced apart from the exhaust port 32. Accordingly, some extra space is created in the first flow space 13 and the second flow space 33. This extra space enables smooth intake when air is inhaled, and smooth exhaust even when exhausted.

Meanwhile, as shown in FIG. 2, a circulation module 70 is installed between the plasma generation module 50 and the filter module 60. The circulation module 70 serves to flow air from the intake port 12 toward the exhaust port 32. In this embodiment, the circulation module 70 is located in an intermediate space S between the plasma generation module 50 and the filter module 60. Alternatively, the circulation module 70 may be installed at a position closer to the plasma generation module 50 than to the intermediate space (S).

The circulation module 70 includes a motor 73 and a flow fan 75 rotated by the motor 73. 2, the circulation module 70 is installed in fan housings 71 and 71' for fixing the circulation module 70 to the intermediate space S. The fan housings 71 and 71' are fixed to the intermediate space S, and a motor 73 and a flow fan 75 are installed in the center of the fan housings 71 and 71'.

3, the fan housings 71 and 71' include a front housing 71 and a rear housing 71', and the fan housings 71 and 71' include the fan housings 71 and 71'. There is a connection arm 72 that connects the motor 73 in the center of the and. The structure of the fan housings 71 and 71' is only an example, and various structures and types of circulation fans can be applied to the present invention. Here, when the rear housing 71' is opened by opening the first case 10 and the second case 30 as shown in FIG. 3(a), the user's finger touches the flow fan 75. It can have a finger safety function to prevent it.

Since the circulation module 70 is located between the plasma generation module 50 and the filter module 60, the circulation module 70 (i) sucks outside air through the intake port 12 in the sterilization mode to generate plasma. Circulating flow (see Fig. 3(a)) or (ii) exhausting the air introduced into the intake port 12 in the ozone removal mode to the exhaust port 32 through the generation module 50 3(b)) can be performed. That is, in this embodiment, since all of these functions can be implemented with one circulation module 70, a separate circulation fan for each mode is not required.

Meanwhile, although not shown in FIGS. 1 to 3, a sensor 102 may be provided in the cases 10 and 30. The sensor 102 is an ozone measuring sensor 102 and may measure the ozone concentration in a digital manner. That is, the sensor 102 measures the ozone concentration around the cases 10 and 30 and transmits the measured ozone concentration to the control unit 100, and the control unit 100 indicates that the ozone concentration measured by the ozone measurement sensor 102 is less than or equal to a reference value. In this case, it is possible to stop the ozone removal mode in which the outside air introduced into the aspiration device 12 is discharged to the exhaust port 32 through the filter module 60. The sensor 102 may measure the ozone concentration in the range of about 10 to 1000 ppm.

The control unit 100 may turn on/off the plasma generation module 50. The control unit 100 is installed inside the cases 10 and 30, and may include a circuit board and various electronic components. As shown in Figure 3 (a), when the intermediate space (S) is opened to the outside and outside air is discharged to the outside through the intake port 12 and the plasma generation module 50, the control unit ( 100) may turn on the plasma generation module 50 to cause plasma discharge. For example, when the first case 10 and the second case 30 are spaced apart through the opening/closing modules 36 and 40, the controller 100 recognizes this and can operate the plasma generation module 50. will be.

In addition, as shown in FIG. 3(b), after the intermediate space S is shielded and outside air passes through the intake port 12 and the plasma generation module 50, the exhaust port ( In the ozone removal mode discharged to 32), the control unit 100 may stop the plasma discharge by turning off the plasma generation module 50. For example, when the first case 10 and the second case 30 are closed through the opening/closing modules 36 and 40, the control unit 100 recognizes this and stops the operation of the plasma generation module 50. There is.

Meanwhile, a speaker 103 may be installed in the cases 10 and 30. The speaker 103 may display the sterilization mode and the ozone removal mode separately, or may function to notify the sterilization mode or the ozone removal mode with a sound when the sterilization mode or the ozone removal mode is terminated. The speaker 103 is connected to the control unit 100 and driven by the control unit 100.

For example, when the plasma sterilization device is operating in the sterilization mode, when the ozone concentration measured by the sensors 102 installed in the cases 10 and 30 is higher than the reference value, the display unit provided in the cases 10 and 30 (18) Or the speaker 103 may be a notification state for activating the ozone removal mode.

In addition, a communication unit 101 may be installed in the cases 10 and 30. The communication unit 101 may function to allow the user to operate the plasma sterilization apparatus of the present invention in a spaced place or to inform the user's terminal of the state of the plasma sterilization apparatus. The communication unit 101 may be implemented in various ways such as Bluetooth, WIFI, LTE, and ZigBee.

On the other hand, Figures 11 and 12 show another embodiment of the opening and closing module constituting the present invention. As can be seen, the opening/closing module may be hinged to the cases 10 and 30 to open the intermediate space S through rotation. More precisely, the cases 10 and 30 include a first case 10 having an intake port 12 and a plasma generating module 50 installed, and a first case 10 having an exhaust port 32 and a filter module 60 installed. Consisting of two cases 30, the first case 10 and the second case 30 are screwed to each other through the opening and closing module. In Figs. 11 and 12, the same reference numerals are assigned to the same components as those in the previous embodiment, and description thereof will be omitted.

Referring to FIG. 11, the opening/closing module 140 is composed of a first fastening part 141 and a second fastening part 145, the first fastening part 141 has a screw thread 142 in an empty space at the center, The second fastening part 145 is inserted into the empty space of the first fastening part 141 and has a thread on its outer surface. Here, the first fastening part 141 is connected to the first case 10 and the second fastening part 145 is connected to the second case 30. The first fastening part 141 and the second fastening part 145 are installed around the center of the intermediate space S. When the second case 30 is rotated in the direction of the arrow ①, the second case 30 may be separated from the first case 10 by moving in the direction of the arrow ②.

Meanwhile, referring to FIG. 12, the opening and closing modules 236 and 240 are composed of a first assembly unit 240 and a second assembly unit 236, and the first assembly unit 240 is provided around the inner surface of the first case 10. It is a ring shape and has a thread 241 on the outer surface. In addition, the second assembly portion 236 is an assembly space in the second flow space 33 of the second case 30, more precisely, the second inner housing 35, and also has a thread 242. Therefore, the first assembly portion 240 and the second assembly portion 236 are screwed together. When the second case 30 is rotated in the direction of the arrow ①, the second case 30 may be separated from the first case 10 by moving in the direction of the arrow ②.

Meanwhile, although not shown, the opening and closing modules 36 and 40 may be covers installed in the case 10 and 30 in the form of a sliding door. The cover may selectively open a discharge window allowing the intermediate space S to be connected to the outside when heated. That is, the opening and closing modules 36 and 40 do not open and close the first case 10 and the second case 30 in a way that moves away or close to each other, and can open a part of the cases 10 and 30. will be. In this case, the cover may be a hinged type assembled in a manner that is rotated by a hinge on the cases 10 and 30.

In addition, an elastic member (not shown) may be connected to the cover to receive an elastic force in either direction, that is, an opening or closing direction. In this case, the elastic member may be automatically controlled by the control unit 100. For example, when the sterilization mode starts, the control unit 100 opens the cover, and when the ozone removal mode starts, the control unit 100 closes the cover. Of course, this opening/closing may be performed by a separate driving source (motor) instead of an elastic member.

Meanwhile, the first case 10 and the second case 30 may be completely separated. That is, the first case 10 and the second case 30 are installed to be separated from each other, and in the sterilization mode, the first case 10 and the second case 30 are separated, and the ozone removal mode In this case, the first case 10 and the second case 30 may be assembled with each other.

3 and 14, a sterilization mode and an ozone removal mode according to the present invention will be described. 14 shows a state in which the object to be sterilized (P) and the plasma sterilizing device according to the present invention are contained in a plastic bag (A) together. As such, the plasma sterilization device sealed inside the plastic bag (A) can effectively sterilize the object to be sterilized (P), for example, bedding, in a closed space.

First, Fig. 3(a) shows a plasma sterilization apparatus in a sterilization mode. As can be seen, in the sterilization mode, the through hole E is opened so that the intermediate space S between the first case 10 and the second case 30 is connected to the outside. 3(a) shows that the through hole E is blocked due to the opening and closing modules 36 and 40, but in reality there is a gap between the plurality of extension bridges 40 constituting the opening and closing modules 36 and 40. It is separated, and the through hole E is open between them.

When the circulation module 70 operates in this state, external air is introduced through the intake port 12 and passes through the plasma generation module 50 built in the first case 10. At this time, since the plasma generation module 50 is in an ON state, plasma is generated. Therefore, the outside air passing through the plasma generation module 50 is sterilized by ozone. The sterilized air is discharged to the outside through the through hole (E). That is, since the through hole E is open, air is discharged to the outside without passing through the filter module 60. Ozone is contained in the exhausted air, so it can directly sterilize the external object to be sterilized (P).

When the sterilization is completed after a predetermined time, the ozone removal mode for removing the generated ozone is executed. 3(b), the first case 10 and the second case 30 are assembled again through the opening/closing modules 36 and 40, and the through hole E is closed. When the circulation module 70 operates in this state, external air is introduced through the intake port 12 and passes through the plasma generation module 50 built in the first case 10.

At this time, since the plasma generating module 50 is in an OFF state, plasma is not generated. Accordingly, the air simply passes through the discharge space 59 of the plasma generation module 50, which is a space through which it passes, flows into the intermediate space S, and is delivered to the filter module 60 again. At this time, since the through hole E is closed, the air may be completely provided to the filter module 60 without being discharged to the outside.

Ozone is removed from the air passing through the filter module 60. _{Previously, ozone (O 3} ) generated as a by-product in the plasma generation module 50 is destroyed by the strong adsorption force of the activated carbon of the filter module 60. In addition, the filter module 60 also functions as a deodorizing filter, and the catalyst of the filter module 60 may be a manganese dioxide (MnO ₂ ), copper oxide (CuO), an artificial enzyme catalyst, and the like, thereby performing a deodorizing function.

Air from which ozone has been removed while passing through the filter module 60 is discharged through the exhaust port 32. When such an operation is performed continuously, ozone remaining in the inside of the plastic bag A and in the object to be sterilized P can be removed. As such, the plasma sterilization apparatus according to the present invention operates the cases 10 and 30 so that air passes through only the plasma generation module 50 when in the sterilization mode, and (ii) when the sterilization is finished and in the ozone removal mode, Air can pass through the filter module (60). That is, both functions of sterilization and ozone removal can be implemented using a single plasma sterilization device.

In the above, even if all the constituent elements constituting the embodiment according to the present invention are described as being combined into one or operating in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the constituent elements may be selectively combined and operated in one or more. In addition, terms such as "include", "consist of" or "have" described above mean that the corresponding component may be present unless otherwise stated, excluding other components. It should not be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art, unless otherwise defined. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: first case 12: intake port
13: first flow space 18: display
30: second case 32: exhaust port
33: second flow space 50: plasma generation module
53: discharge part 53A: first electrode
53B: second electrode 54: dielectric
57: power supply unit 60: filter module
70: circulation module E: through hole
S: Intermediate space

Claims (23)

A case in which there is a flow space through which air flows and an intake port and an exhaust port connected to the flow space,
A plasma generation module installed in the flow space close to the intake port to be connected to the intake port and generating a plasma discharge;
A filter module installed inside the flow space, which is installed closer to the exhaust port than the plasma generating module and capable of decomposing ozone generated in the plasma generating module and discharging it to the exhaust port;
A circulation module installed in the flow space between the plasma generating module and the filter module and flowing air from the intake port to the exhaust port,
Plasma sterilization apparatus comprising an opening/closing module installed in the case and selectively opening a part of the case so that an intermediate space between the plasma generating module and the filter module is connected to the outside.
The method according to claim 1, wherein the plasma generation module
A first electrode to which power is applied from the power supply,
And a second electrode spaced apart from the first electrode to create a discharge space between the first electrode,
A plasma sterilization apparatus in which a dielectric is coupled to at least one of the first electrode or the second electrode.
The method according to claim 2, wherein the plasma generation module is composed of a plurality of discharge units composed of the first electrode and the second electrode, the plurality of discharge units are stacked on each other, and the discharge space is opened to connect between the circulation modules at the intake port. Plasma sterilization device.
The method according to claim 1, wherein the plasma generation module is composed of a plurality of discharge units, the discharge unit
A first electrode having a flat plate structure and having a first connection end at one end connected to the power supply unit,
It is a flat plate structure installed in parallel with the first electrode while creating a discharge space between the first electrode, and the second connection end at one end is connected to a polarity different from the polarity of the power supply to which the first electrode is connected or is grounded. Including a second electrode,
A plasma sterilization apparatus in which a dielectric is coupled to at least one of the first electrode or the second electrode.
The plasma sterilizing apparatus according to claim 1, wherein the first connecting end of the first electrode and the second connecting end of the second electrode protruding in opposite directions to each other.
The plasma sterilization apparatus according to claim 1, wherein a plurality of discharge units are stacked apart from each other, and a plurality of discharge units are connected in parallel.
The plasma sterilization apparatus according to claim 1, wherein the plurality of discharge units are disposed in parallel with a longitudinal direction of a flow space connecting between the intake port and the exhaust port.
The plasma sterilization apparatus according to claim 1, wherein the filter module comprises activated carbon and manganese dioxide.
The plasma sterilization apparatus according to claim 1, wherein the filter module is made of a porous material to allow air flow between the circulation module and the exhaust port.
The plasma sterilization apparatus according to claim 1, wherein the circulation module is located in the intermediate space or is installed at a position closer to the plasma generation module than the intermediate space, and includes a flow fan rotated by a motor.
The ozone removal mode according to claim 1, wherein an ozone measurement sensor is installed in the case, and the control unit is configured to discharge outside air flowing into the intake port through the filter module to an exhaust port when the ozone concentration measured by the ozone measurement sensor is less than a reference value. Plasma sterilization device to stop the operation.
The method according to claim 1, wherein when a control unit is installed in the flow space, and the intermediate space is opened to the outside and in a sterilization mode in which outside air passes through the intake port and the plasma generation module and is discharged to the outside, the control unit operates the plasma generation module. Plasma sterilization device that is turned on to cause plasma discharge.
The method according to claim 12, wherein the control unit turns off the plasma generation module when in the ozone removal mode in which the intermediate space is shielded and the outside air is discharged to the exhaust port through the filter module after passing through the intake port and the plasma generation module. ) To stop plasma discharge.
The plasma sterilization apparatus according to claim 1, wherein at least one of a display or a speaker is installed in the case, and the display or speaker displays a sterilization mode and an ozone removal mode separately.
The plasma sterilization apparatus according to claim 1, wherein when the ozone concentration measured by an ozone measuring sensor installed in the case is greater than or equal to a reference value, a display or speaker provided in the case is in a notification state for activation of the ozone removal mode.
The method of claim 1, wherein the case
A first case having the intake port and in which the plasma generating module is installed,
And a second case having the exhaust port and in which the filter module is installed,
The opening/closing module is installed so as to cross between the first case and the second case, and when the first case and the second case are spaced apart from each other with the opening/closing module therebetween, the intermediate space is exposed to the outside.
The method according to claim 1, wherein one of the opening and closing modules is fixed to the first case constituting the case and the opposite side is connected to the second case constituting the case, and when the first case and the second case are spaced apart from each other The opening/closing module slides with respect to the second case, maintaining a state in which the first case and the second case are connected to each other, and opening the intermediate space to the outside.
The method according to claim 1, wherein the opening and closing module is a bar-shaped extension bridge installed across the first case and the second case constituting the case, or is installed around the intermediate space between the first case and the second case. A plasma sterilization apparatus comprising a connecting ring and having a through hole connecting the intermediate space to the outside when the first case and the second case are spaced apart from each other.
The method according to claim 1, wherein the opening and closing module is hinged to the case to open the intermediate space through rotation, or is installed in the case in a sliding door shape to selectively open a discharge window through which the intermediate space is connected to the outside. Plasma sterilization device consisting of a cover.
The plasma sterilization apparatus according to claim 1, wherein the plasma generation module is installed inside the flow space so as to be spaced apart from the intake port, and the filter module is installed inside the flow space so as to be spaced apart from the exhaust port.
The method of claim 1, wherein the case
A first case having the intake port and in which the plasma generating module is installed,
And a second case having the exhaust port and in which the filter module is installed,
Plasma sterilization apparatus in which the first case and the second case are screwed to each other through the opening/closing module.
The method of claim 1, wherein the case
A first case having the intake port and in which the plasma generating module is installed,
And a second case having the exhaust port and in which the filter module is installed,
The first case and the second case are installed to be separated from each other, so that the first case and the second case are separated in the sterilization mode, and the first case and the second case are assembled to each other in the ozone removal mode. Plasma sterilizer.
A case in which there is a flow space through which air flows and an intake port and an exhaust port connected to the flow space,
A plasma generation module installed in the flow space close to the intake port to be connected to the intake port and generating a plasma discharge;
A filter module installed inside the flow space, which is installed closer to the exhaust port than the plasma generating module and capable of decomposing ozone generated in the plasma generating module and discharging it to the exhaust port;
And a circulation module installed in the flow space between the plasma generation module and the filter module and configured to flow air from the intake port toward the exhaust port,
At least a portion of the case is selectively opened so that an intermediate space between the plasma generating module and the filter module can be connected to the outside.

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