KR102226005B1 - Photocatalyst device - Google Patents

Abstract

The photocatalytic device 100 of the present invention includes a first case 110 in which the seating portion 112 is concavely formed; Including an LED 121, a first substrate 122a to which the LED 121 is fixed, and a second substrate 122b for controlling a constant current to flow through the LED 121 A light source unit 120 that is irradiated and fixed to the seating unit 112 of the first case 110; A catalyst unit 140 for generating peroxygen radicals by causing a photocatalytic reaction by light irradiated by the light source unit 120; And a second case 130 that surrounds an edge of the catalyst part 140 and allows air to flow therein, and is fixed to the first case 110. Through this, the photocatalytic device 100 of the present invention purifies the air flowing into the air conditioning case 300, sterilizes and deodorizes the evaporator 410, and efficiently removes heat generated from the photocatalytic device 100. It heats up and minimizes the influence of electromagnetic waves.

Description

Photocatalyst device {PHOTOCATALYST DEVICE}

The present invention relates to a photocatalytic device, and more particularly, it is possible to assemble simply, sterilize and deodorize the evaporator, as well as purify the air flowing into the air conditioning case, and efficiently dissipate heat generated from the photocatalytic device , It relates to a photocatalytic device capable of minimizing the effect of electromagnetic waves.

A vehicle air conditioner is a device for cooling or heating the vehicle interior by heating or cooling the vehicle interior by introducing air outside the vehicle into the vehicle interior or circulating the air inside the vehicle, and an evaporator for cooling action inside the air conditioning case, A heater core for a heating action and air cooled or heated by an evaporator or a heater core are selectively blown to each part of the vehicle interior by using a ventilation mode switching door.

On the other hand, not only the vehicle penetration rate continues to increase, but also the amount of time the user is in the vehicle is increasing. However, since the interior of the vehicle is narrow and sealed, it is easy to be polluted, and the pollution of the vehicle interior is further increased due to fine dust and various pollutants in the city, and in recent years, an air purification device for a vehicle that purifies the indoor air of the vehicle has been developed. .

As an example, the previously applied Japanese Patent Publication No. 2549032 (1997.05.30) discloses a cooling device with a deodorizer for automobiles. 1 is a cross-sectional view showing a conventional cooling device with a deodorizer for a vehicle.

As shown in FIG. 1, a conventional cooling apparatus with a deodorizer for automobiles has an outdoor air intake 21 and an internal air intake 22 in a first case 20, and an outdoor air intake 21 and an internal air intake 22 ) Selectively opening and closing the intake door 23 is provided to be rotatable. An actuator 30 is connected to the rotating shaft of the intake door 23 and is controlled by the control means 31. A blower 25 is installed on the downstream side of the intake door 23 to blow the air introduced from the internal and external air intake ports 21 and 22 to the downstream side, and the blower 25 includes a fan 32 and the fan 32 ) Is composed of a motor 33 to rotate. An evaporator 26 is installed on the downstream side of the blower 25 to cool the air by exchanging heat with the air passing through it. A photocatalytic filter 27 is installed in the air passage 28 on the downstream side of the evaporator 26 to generate active oxygen by irradiation with long wavelength light. The photocatalytic filter 27 generates active oxygen by irradiation of the ultraviolet lamp 29, and oxidatively decomposes the substance causing the odor of the active oxygen to an oxidizable compound having an extremely low concentration. The ultraviolet lamp 29 is disposed between the evaporator 26 and the photocatalytic filter 27. A metal catalyst filter 34 for removing ozone contained in the flowing air is installed on the downstream side of the photocatalytic filter 27. Reference numeral 35, which is not described, is a temperature sensor, 36 is a sensor that senses an odor level, 37 is a fan switch, and 24 is an air outlet.

However, in the conventional cooling device with a deodorizer for automobiles, the ultraviolet lamp 29 used as a light source of a photocatalyst contains mercury inside, and mercury is harmful to the human body and cannot be applied to a vehicle due to various environmental requirements. There was a problem. In addition, as the photocatalytic filter 27 is installed on the downstream side of the evaporator 26 to absorb and deodorize the odor generated from the evaporator 26, there is a problem in that the filter needs to be replaced due to a decrease in the air volume when the amount of dust is excessive. In addition, in the conventional cooling apparatus with a deodorizer for automobiles, the ultraviolet lamp 29 and the photocatalytic filter 27 are separate parts, and assembling properties are deteriorated.

Japanese Patent Publication No. 2549032 (1997.05.30)

The present invention was conceived to solve the above-described problems, and an object of the present invention is that it can be assembled simply and sterilizes and deodorizes the evaporator while purifying the air flowing into the air conditioning case, and in the photocatalytic device It relates to a photocatalytic device capable of efficiently dissipating generated heat and minimizing the effect of electromagnetic waves.

The photocatalytic device of the present invention comprises a first case with a recessed seating portion formed thereon; A light source unit that irradiates ultraviolet (UV) light including an LED, a first substrate to which the LED is fixed, and a second substrate that controls a constant current to flow through the LED, and is fixed to the seating portion of the first case; A catalyst unit generating a peroxygen radical by causing a photocatalytic reaction by light irradiated by the light source unit; And a second case that surrounds an edge of the catalyst part and allows air to flow therein, and is fixed to the first case. Through this, the photocatalyst device of the present invention purifies the air flowing into the air conditioning case, sterilizes and deodorizes the evaporator, efficiently dissipates heat generated from the photocatalyst device, and minimizes the effect of electromagnetic waves. . In addition, by assembling the first case and the second case, the light source unit and the catalyst unit are provided therein, so that manufacturing is easy, and the fixing unit is formed in the first case so that it is easy to mount on the case of the vehicle air conditioner.

In particular, since the photocatalytic device is provided so that the side of the second substrate to which the element is attached faces the catalyst portion, the emission of electromagnetic waves to the outside may be reduced, thereby reducing adverse effects caused by the electromagnetic waves.

In addition, in the photocatalytic device of the present invention, in order to easily dissipate heat generated from the LED, the first case may be made of a die-cast alloy material, and one or both of the first heat dissipation fin and the second heat dissipation fin may be provided. First, the light source unit may be provided with a first heat dissipation fin on the opposite side of the substrate on which the LED is provided, and the first case may have a hollow part in which a predetermined area of the seating part is hollow so that the heat dissipation part is inserted and protruded to the outside.

In addition, the light source unit may be provided with a second heat dissipation fin in the shape of a plate parallel to the air flow direction inside the vehicle air conditioning case except for a region in which the LED irradiates light to the catalyst unit on one side of the substrate on which the LED is provided.

The photocatalytic device of the present invention is provided with one or both of the first and second radiating fins, thereby discharging heat generated from the LED to the outside, thereby increasing the operating durability of the LED.

In addition, the catalyst unit may include a support and a coating layer supported by coating a catalyst liquefied in a gel form by adding a cocatalyst and an acidic additive to the support.

Accordingly, the photocatalytic device of the present invention can be easily assembled, purifies the air flowing into the air conditioning case, sterilizes and deodorizes the evaporator, efficiently dissipates heat generated from the photocatalyst device, and uses electromagnetic waves. It relates to a photocatalytic device capable of minimizing the influence.

1 is a cross-sectional view showing a conventional cooling device with a deodorizer for a vehicle.
2 to 4 are a perspective view, an exploded perspective view, and a cross-sectional view in the AA' direction of the photocatalytic device according to the present invention.
5 is a view showing a catalyst part of the photocatalytic device according to the present invention.
6 and 7 are another cross-sectional view and a perspective view of a second heat dissipation fin of the photocatalytic device according to the present invention.
Figure 8 is another partial exploded perspective view of the photocatalytic device according to the present invention.
9 to 11 are schematic views, perspective views, and partial perspective views showing a vehicle air conditioning system equipped with a photocatalytic device according to the present invention.

Hereinafter, the photocatalytic device 100 of the present invention having the above-described characteristics will be described in detail with reference to the accompanying drawings.

2 to 4 are a perspective view, an exploded perspective view, and a cross-sectional view in the AA′ direction of the photocatalytic device 100 according to the present invention, and FIG. 5 is a view showing the catalyst unit 140 of the photocatalytic device 100 according to the present invention. 6 and 7 are another cross-sectional view of the photocatalytic device 100 according to the present invention and a perspective view of the second heat dissipation fin 124, and FIG. 8 is another partially exploded perspective view of the photocatalytic device 100 according to the present invention. 9 to 11 are schematic diagrams, perspective views, and partial perspective views showing a vehicle air conditioning apparatus 1000 equipped with a photocatalytic apparatus 100 according to the present invention.

The photocatalytic device 100 of the present invention includes a first case 110, a light source unit 120, a catalyst unit 140, and a second case 130.

The first case 110, together with the second case 130, constitutes a basic body of the photocatalytic device 100 of the present invention, and a fixing part 111 is formed. The fixing part 111 is a configuration for fixing the case (air conditioning case 300 or blowing case 210) of the vehicle air conditioning apparatus 1000, and fixing means such as bolts in FIGS. 2 and 3 are inserted and fixed. Although a hollow shape that can be formed is shown, the fixing part 111 of the photocatalytic device 100 of the present invention is not limited thereto, and can be modified into various shapes that can be fixed to the case of the vehicle air conditioner 1000. . A description of the fixing with the second case 130 will be described again below.

In addition, in the first case 110, a seating portion 112 on which the light source unit 120 is mounted is formed to be concave, so that light irradiated from the light source unit 120 (LED 121) is transmitted to the catalyst unit ( 140) It is desirable to make the area irradiated evenly. In addition, it is preferable that the first case 110 is made of a die-cast alloy material. In the present invention, the die-cast alloy refers to a metal material that can be die-cast including an aluminum alloy and a zinc alloy, and has excellent heat dissipation. In the photocatalytic device 100 of the present invention, the first case may be formed of a material having excellent heat dissipation properties, including a die-cast alloy.

The light source unit 120 is a portion fixed to the first case 110, a light emitting diode (LED 121), a first substrate (122a) to which the LED 121 is fixed, and the Ultraviolet (UV) light is irradiated including the second substrate 122b for controlling a constant current to flow through the LED 121. The LED 121 irradiates UVA (Ultra Violet-A) light or UVC (Ultra Violet-C) light having a wavelength of 400 nm or less, and solves the problem of mercury use, which was a problem in conventional mercury lamps, and has a small power. Effective light irradiation is possible. In this case, because UVA is relatively inexpensive, it is advantageous in terms of cost and effectively activates the photocatalytic reaction of the photocatalyst carrier. In addition, although UVC is relatively expensive, it can improve sterilization efficiency by performing a sterilization function on its own while activating a photocatalytic reaction. The light source unit 120 may include one LED 121 and two or more may be provided corresponding to the size of the catalyst unit 140. Of course, when two or more LEDs 121 are provided, both LEDs 121 for irradiating Ultra Violet-A (UVA) and Ultra Violet-C (UVC) may be provided.

In this case, the first substrate 122a is a portion to which the LED 121 is fixed, and the second substrate 122b is a portion that controls a constant current to flow to the LED 121. Each of the first substrate 122a and the second substrate 122b has various elements attached thereto, and the first substrate 122a has a plate shape and has an LED 121 on a surface adjacent to the catalyst unit 140. It is provided with an element for fixing and operating the LED 121 on the opposite side. The second substrate 122b has a plate shape, but as opposed to the first substrate 122a, various elements for controlling a constant current to flow to the LED 121 are provided on a surface adjacent to the catalyst unit 140 (See FIG. 3) Through this, the photocatalytic device 100 of the present invention may reduce the emission of electromagnetic waves to the outside, thereby reducing adverse effects caused by the electromagnetic waves.

The light source unit 120 may further include a configuration for dissipating heat generated from the LED 121, the first substrate 122a, and the second substrate 122b.

3 and 4 shows an example in which the first heat dissipation fin 123 is provided on the opposite side of the first substrate 122a on which the LED 121 is provided, and the first case 110 Hollow portions 113 and 113 in which a predetermined area of the seating portion 112 is hollow are formed so that the first heat dissipation fin 123 is inserted and protrudes to the outside. That is, the first heat dissipation fins 123 protrude to the outside through the hollow parts 113 and 113 of the first case 110 to easily dissipate heat.

In addition, the shapes shown in FIGS. 6 and 7 show an example in which a second heat dissipation fin 124 is further provided in addition to the shapes shown in FIGS. 3 and 4. The second heat dissipation fin 124 is a vehicle air conditioning case ( 300) A parallel plate protrudes in the direction of the internal air flow. That is, the second heat dissipation fins 124 protrude to the inside of the first case 110 and are formed in a plate shape parallel to the air flow direction inside the vehicle air conditioning case 300 so as not to interfere with the air flow therein. In addition, the second heat dissipation fin 124 protrudes in an area that does not interfere with the light irradiation area of the LED 121. 6 and 7, the heat dissipation fin shows an example in which an area adjacent to the LED 121 is formed to be inclined (124'), and the photocatalytic device 100 of the present invention is in addition to the form shown in FIGS. 6 and 7 It can be modified in more various ways. In Fig. 7, the direction of air flow is indicated by arrows.

The first heat dissipation fins 123 and the second heat dissipation fins 124 are formed only in a region in which the first substrate 122a is formed, or in the entire region in which the first and second substrates 122a and 122b are formed. Can be.

Further, the first heat dissipation fin 123 and the second heat dissipation fin 124 may be fastened and fixed at a time through a configuration for fixing the first substrate 122a to the first case 110.

The form shown in FIG. 8 is a form in which two LEDs 121 are provided, and the second heat dissipation fin 124 is also a first substrate 122a and a second substrate 122b on which two LEDs 121 are mounted. An example formed in a size corresponding to) is shown.

The photocatalytic device 100 of the present invention may be provided with only the second heat dissipation fin 124, and the LED 121, the first substrate 122a, and the first heat dissipation fin 123 and the second heat dissipation fin 124 2 There is an advantage in that the durability can be further increased since heat generated from the substrate 122b can be easily discharged.

The catalyst unit 140 generates a photocatalytic reaction by light irradiated by the light source unit 120 to generate peroxygen radicals. The catalyst unit 140 generates a photocatalytic reaction by the light irradiated from the light source unit 120, and by the oxidation of peroxygen radicals generated in the photocatalytic reaction, contaminants introduced into the air conditioning case 300 and , Removes fungi, various pollutants, and odors in the evaporator 410. In more detail, when the photocatalyst absorbs light irradiated from the light source unit 120, electrons in a valence band (VB) filled with electrons absorb light energy, and the conduction band (CB) in which electrons are empty. ) To jump. Holes, which are vacant electron sites in the valence band, oxidize water molecules on the surface and become themselves in their original state, and oxidized water molecules form ㅇOH radicals. In addition, electrons called excited electrons excited by the conduction band react with oxygen to generate peroxygen radicals with strong oxidizing power.

Meanwhile, the catalyst unit 140 may include a support 141 and a coating layer 142 supported by coating the catalyst liquefied in a gel form by adding a cocatalyst and an acidic additive to the support 141. have. (See FIG. 5) The support member 141 may be formed in various structures including a mesh, and may be made of metal or a material having elastic properties.

As the catalyst, titanium oxide granulated to a size of 10 nanometers to 60 nanometers is provided, and the surface area value of the titanium oxide ^{is formed to be 330 m 2} /g or more. More specifically, titanium oxide (TiO ₂ ) used as a photocatalyst receives ultraviolet rays of 400 nm or less to generate peroxygen radicals, and the generated peroxygen radicals decompose organic matter into safe water and carbon dioxide. The titanium oxide is nanoparticleized and can generate a large amount of peroxygen radicals even when a light source having a relatively weak ultraviolet wavelength is used. Therefore, it has excellent decomposition ability of organic matter, has continuous durability and stability despite environmental changes, and has a semi-permanent effect. In addition, peroxygen radicals generated in a large amount can remove not only organic substances but also various substances such as odors and bacteria. The catalyst unit 140 has a surface area value of 330m ² /g or more of nanoparticle-formed titanium oxide, so that the number of particles receiving light energy per area is significantly greater than that of conventional titanium oxide, resulting in the generation of peroxygen radicals. Increases.

In this case, the cocatalyst may be alumina, and in this case, there is an advantage of improving the carrying power of the catalyst part 140 and increasing the fixing ability of the carrying body 141.

When explaining an example of the manufacturing process of the catalyst unit 140, titanium oxide is granulated into a size of 10 nanometers to 60 nanometers through sintering at high temperature and drying at room temperature, and then a cocatalyst composed of alumina is added. Processed into liquid. Thereafter, the liquid phase is subjected to secondary processing according to the intended use, supported on the carrier 141, and fixed to the carrier 141 through a secondary drying and firing process.

The photocatalytic device 100 of the present invention is a structure that generates peroxygen radicals through a photocatalytic reaction using the light source unit 120 and the catalyst unit 140, and absorbs and deodorizes contaminated air containing conventional odors. Compared with that, there is an advantage that it is not necessary to change the filter separately, and can be used almost semi-permanently through selection of the type of carrier or appropriate on/off control of the light source unit 120.

The second case 130 is formed in a frame shape in which air can flow into the shape surrounding the edge of the catalyst unit 140. The photocatalytic device 100 of the present invention has a simple shape because the light source unit 120 and the catalyst unit 140 can be fixed inside by assembling the first case 110 and the second case 130, It is easy to assemble and has the advantage of increasing manufacturability. In this case, the first case 110 and the second case 130 may be assembled by various methods. As an example, a fastening hole 114 is formed in the first case 110, and the first case 110 A fastening hook 131 inserted into the fastening hole 114 may be formed in the case 130. The fastening hook 131 can be inserted into the fastening hole 114, but has a shape that is not separated, and can be easily fixed by a force pushing the second case 130 toward the first case 110. There is an advantage to be able to.

The photocatalytic device 100 of the present invention is fixed to the ventilation case 210 or the air conditioning case 300 of the vehicle air conditioning device 1000 by the fixing part 111 of the first case 110 and supplied to the interior of the vehicle. Cleanse. In this case, it is preferable that the photocatalytic device 100 of the present invention is provided on the front side of the evaporator 410 provided in the vehicle air conditioner 1000 to sterilize and deodorize the evaporator 410.

The vehicle air conditioner 1000 will be briefly described. (See Figs. 9 to 11)

The vehicle air conditioner 1000 includes a blowing device 200 including an inlet duct, an internal/external air conversion door 213, a blowing fan 214 and a blowing case 210, and temperature control and air flow discharged to the interior of the vehicle. It includes an air-conditioning case 300 in which components for adjusting the built-in.

The inlet duct has an internal air inlet 211 and an external air inlet 212, respectively. The inside air inlet 211 communicates with the inside of the vehicle to introduce inside air, and the outside air inlet 212 communicates with the outside of the vehicle to introduce outside air.

The inside and outside air conversion door 213 is provided inside the inlet duct to open and close the inside air inlet 211 and the outside air inlet 212. The internal/external air conversion door 213 is operated according to a setting of a vehicle occupant and controls the external air or bet air to be selectively introduced.

The blowing fan 214 forcibly blows internal or outdoor air.

The blowing case 210 is a portion connected to the inlet duct and the other side to the inlet side of the air conditioning case 300, and the blowing fan 214 is provided therein. In more detail, the blower case 210 is connected to the inlet duct and extends from the periphery of the fan seating part 112 on which the blower fan 214 is seated, and the air conditioning case 300 Includes a connection part connected to the inlet side of ). In FIG. 11, an example in which the photocatalytic device 100 of the present invention is mounted on the discharge side (the side connected to the air conditioning case 300) of the connection part of the blowing case 210 is shown.

Meanwhile, the air-conditioning case 300 is connected to the air inlet and the blowing case 210 to allow air to flow therein, and an evaporator 410 and a heater core 420 are provided therein to provide air supplied through the blowing device 200. Is cooled or heated, and is supplied to the interior of the vehicle through a plurality of vents 300. In this case, generally, the evaporator 410 cools the air by flowing a cold refrigerant, and the heater core 420 heats the air by flowing the heated coolant. In addition, the air conditioning case 300 is provided with a temperature control door that determines the degree to which air that has passed through the evaporator 410 passes through the heater core 420. In other words, the temperature control door controls the opening degree of the hot air passage through which all of the air passing through the evaporator 410 passes through the heater core 420 and the cold air passage through which the heater core 420 does not pass. In addition, the air conditioning case 300 is formed with a vent 300 through which air controlled by the evaporator 410 and the heater core 420 is discharged into the vehicle interior. The vent 300 includes a face vent 300, a defrost vent 300, and a floor vent 300. The face vent 300 is a part that discharges air to the front side (front seat) of the vehicle interior, the defrost vent 300 is a part that discharges air toward the window of the vehicle interior, and the floor vent 300 is It is a part that discharges air toward the floor of the front seat of the vehicle interior, and the face vent 300, the defrost vent 300, and the floor vent 300 are opened through respective mode doors 310d.

The present invention is not limited to the above-described embodiments, and of course, various modifications can be made without departing from the gist of the present invention as claimed in the claims.

100: photocatalytic device
110: first case
111: fixed part
112: seating part 113: hollow part
114: fastening hole
120: light source
121: LED
122a: first substrate 122b: second substrate
123: first heat dissipation fin
124: second heat dissipation fin 124': inclined portion
130: second case 131: fastening hook
140: catalyst part
141: carrier 142: coating layer
200: blower
210: ventilation case
211: internal air inlet 212: outdoor air inlet
213: internal/external switching door 214: blower fan
300: air conditioning case
310: vent 310d: mod door
320: temperature control door
410: evaporator
420: heater core
1000: vehicle air conditioning system

Claims (6)

A first case with a recessed seating portion formed on the lower surface thereof;
A light source unit that irradiates ultraviolet (UV) light including an LED, a first substrate to which the LED is fixed, and a second substrate that controls a constant current to flow through the LED, and is fixed to the lower surface of the seating portion of the first case ;
A catalyst unit generating a peroxygen radical by causing a photocatalytic reaction by light irradiated by the light source unit; And
A second case fixed to the first case so as to receive the catalyst part in a form surrounding the edge of the catalyst part, allow air to flow therein, and to form a space between the catalyst part and the first case. Including,
The LED formed on one surface of the first substrate faces the catalyst, and an element for operating the LED is disposed on the other surface of the first substrate, It is provided so that the side of the second substrate to which the device is attached faces the catalyst part,
The light source unit,
A plate member attached to one surface of the first substrate and the second substrate and having an opening exposing the LED; And
A second heat dissipation fin attached on the plate member in which the opening is not formed so as not to interfere with the light irradiated from the LED, and further comprising a second heat dissipation fin positioned in a space between the catalyst part and the first case,
The photocatalytic device, characterized in that the second heat dissipation fin has a plate shape whose height increases as the distance from the opening side increases.
delete The method of claim 1,
The first case is a photocatalytic device, characterized in that the die-cast alloy material.
The method of claim 1,
The light source unit further comprises a first heat dissipation fin provided on the opposite side of the first substrate with the LED,
The photocatalytic device, characterized in that the first heat dissipation fin is inserted into the hollow portion and protrudes to the outside.
delete The method of claim 1,
The catalyst unit comprises a support and a coating layer supported by coating a catalyst liquefied in a gel form by adding a cocatalyst and an acidic additive to the support.

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