KR100454832B1 - Deodorization Device - Google Patents

Abstract

An object of the present invention is to efficiently remove odor components in a gas even in a closed space in which gas is not circulated.

The deodorizing device 9 is configured by arranging a direct current discharge mechanism 27, a photocatalyst module 28, and an ozone decomposition catalyst filter 29 in the duct 26. The DC discharge mechanism 27 is composed of a wire-shaped discharge electrode 30 and a pair of counter electrodes 31. The discharge electrode 30 is disposed to be moved to the left of the center line A in the left and right directions of the counter electrode 31. When a direct current high voltage potential is applied to the discharge electrode 30, a high voltage discharge is generated between the electrodes 30 and 31 to generate ion wind, and thus airflow flowing in the duct 26 in the direction of arrow B. As a result, cold air in the reservoir flows into the duct 26 from the inlet port 26a, and is deodorized when passing through the photocatalyst module 28 and the ozone decomposition catalyst filter 29 and discharged into the reservoir from the outlet port 26b.

Description

Deodorization Device

The present invention relates to a deodorizing apparatus for deodorizing gas by removing malodorous components in the gas.

For example, in the refrigerator, in order to reduce the various odors resulting from the food in a storage and to prevent the odor shift to other food, the deodorizing apparatus which consists of adsorbents, such as activated carbon, is conventionally arrange | positioned in a storage. However, the adsorbent is less effective when the adsorption performance is saturated, so the adsorbent must be replaced appropriately. In addition, if the adsorption performance is left in a saturated state, there is a problem that odor is released again from the adsorbent itself.

Therefore, as a method of extending the deodorizing performance, a method of assembling a platinum catalyst in the vicinity of the defrost heater and adsorbing odorous substances contained in the air in the storage, and thermally decomposing the odorous substances by the heater during defrosting is adopted. have. Moreover, in recent years, the deodorizing apparatus which used the oxidizing power of ozone, and the deodorizing apparatus which combined the discharge light and the photocatalyst as proposed in Japanese Patent Application 2000-181518 are developed as exhibiting a more powerful deodorizing effect.

In any of the deodorizing apparatuses described above, the deodorizing effect is improved by increasing the contact efficiency between the malodorous substance, the adsorbent, the catalyst and the ozone molecules. For this reason, the said deodorizing apparatus is assembled in the circulation path of cold air in the inside of a reservoir, and the cold air containing a bad smell is distributed in the apparatus.

Therefore, for example, when the deodorizing device is applied to a direct cooling refrigerator or a shoe box in which cold air (gas) does not circulate in the storage, a blowing fan dedicated to the deodorizing device must be installed to distribute the gas in the deodorizing device. There was a problem that the entire apparatus was enlarged. Moreover, even in the refrigerator of the type which circulates cold air by a blower fan, since the installation place of a deodorizer is limited to the circulation path of cold air, there exists a problem that the freedom of installation of a deodorizer is low. Moreover, deodorization efficiency falls when a blowing fan stops and cold air is not circulating.

Accordingly, an object of the present invention is to provide a deodorizing apparatus that can efficiently remove odor components in a gas even in a closed space in which gas is not circulated.

The deodorizing apparatus of claim 1 of the present invention includes an ion wind generating means having a counter electrode and a discharge electrode, and generating a high voltage discharge by applying a direct current high voltage between the discharge electrode and the counter electrode; And deodorizing means for removing malodorous components contained in the gas.

According to the above structure, since the gas can be circulated to the deodorizing means by the ion wind generated by applying a high voltage to the ion generating means, even if the gas is disposed in a closed space where the gas is not purified, the odor component contained in the gas can be efficiently Can be removed with Moreover, compared with the structure which distribute | circulates gas using a fan apparatus, it can be comprised densely and can also aim at low noise. In addition, since ozone can be generated by the high voltage discharge between the discharge electrode and the counter electrode, the odor component can be decomposed and removed using the oxidizing power of the ozone.

In this case, there is a gas circulation path therein, and a duct for receiving ion wind generating means and deodorizing means is provided, and the ion wind generating means is configured by disposing the discharge electrode upstream from the center of the air flow direction of the counter electrode. At the same time, the deodorizing means may be disposed downstream of the ion generating means (the invention of claim 2).

According to the above structure, air flow is generated in the duct by the ion wind generated by the ion wind generating means, and gas can be efficiently blown into the duct and directed to the deodorizing means, thereby further improving the deodorizing efficiency.

Further, the deodorizing means comprises a photocatalyst filter which decomposes odor components and harmful substances contained in the gas by means of ultraviolet generating discharge means for generating ultraviolet rays by high voltage discharge and photocatalytic action generated by irradiating the ultraviolet rays. It can be comprised and equipped with a photocatalyst module (invention of Claim 3).

The deodorizing means may comprise an ozone generating means for generating ozone by high voltage discharge and an ozone deodorizing means comprising an ozone decomposition catalyst filter for decomposing the ozone (invention 5). According to the above structure, the odor component in the gas can be decomposed by the oxidizing power of ozone.

In addition, the deodorizing means may be configured to include an activated carbon filter for adsorbing malodorous components, harmful substances, and the like contained in the gas (Invention 6).

In addition, in any one of the above-mentioned claims 3, 4 and 6, the gas containing the malodorous component can be actively directed to the deodorizing means, so that the gas can be efficiently deodorized.

Further, in the invention of claim 3, the photocatalyst filter of the photocatalyst module is configured by fixing photocatalyst particles on the surface of a substrate made of porous ceramic, and the discharging means for generating ultraviolet rays is disposed to face each other via the photocatalyst module. And disposing the counter electrode of the ultraviolet generation discharge means toward the ion generating means, and configuring the counter electrode of the ultraviolet generation discharge means and the counter electrode of the ion generating means to have a ground potential. Preferred (the invention of claim 4).

According to the said structure, even if a photocatalyst module is arrange | positioned in the gas distribution path, it does not disturb the gas distribution very much. In addition, the non-directional ultraviolet rays generated by the high voltage discharge between the discharge electrode and the counter electrode of the photocatalyst module can be efficiently irradiated to the photocatalyst module, so that the photocatalytic reaction can proceed efficiently. In addition, discharge can be prevented between the ion wind generating means and the photocatalyst module.

Further, the ion generating means is disposed between the pair of plate-like counter electrodes arranged in a direction orthogonal to the airflow direction and the pair of plate-shaped counter electrodes, extending in a direction parallel to the counter electrode or in a direction perpendicular to the airflow direction. What is necessary is just to comprise a wire-type discharge electrode (invention of Claim 7).

According to the above structure, since the counter electrode is provided so as to sandwich the discharge electrode from both sides, the amount of generated ion wind can be increased as compared with the structure in which the counter electrode is provided only on one side of the discharge electrode. In addition, since the plate-like counter electrode is disposed to face in the direction orthogonal to the air flow direction, the air flow is prevented from being disturbed by the counter electrode as much as possible.

Furthermore, between the pair of plate-shaped counter electrodes disposed so as to face the ion generating means in a direction orthogonal to the air flow direction, the pair of plate-shaped counter electrodes are arranged to extend in a direction parallel to the counter electrode and perpendicular to the air flow direction. You may comprise by arrange | positioning a plurality of discharge units which consist of a wire-type discharge electrode becoming in series and airflow direction (invention of Claim 8).

According to the above configuration, the amount of generated ion wind can be increased while preventing the flow of gas in the duct as possible.

Further, the ion generating means is disposed between each of a plurality of plate-shaped counter electrodes arranged in parallel in a direction orthogonal to the airflow direction, and between two counter electrodes facing each other among the plurality of counter electrodes, so as to be parallel to the counter electrode or in the air flow direction It is also preferable to comprise the several wire-shaped discharge electrode extended in the direction orthogonal to (the invention of Claim 9).

According to the above configuration, the amount of generated ion wind can be increased without the apparatus having to be enlarged in the airflow direction.

In addition, it is also a good constitution so that a negative high voltage potential is applied to the discharge electrode of the ion generating means (invention of claim 10). According to the above configuration, since the amount of ozone generated is increased, the deodorizing performance is improved.

On the other hand, you may comprise so that a positive high voltage electric potential may be applied to the discharge electrode of an ion generating means (invention of Claim 11). According to the said structure, since the amount of ozone generation can be reduced, it is not necessary to provide an ozone decomposition catalyst, and the apparatus can be compacted by that much. Further, if the amount of ozone generated is small, the deodorizing performance is reduced by that amount. Therefore, the present invention is suitable for the deodorizing apparatus installed in a place where the amount of odor components in the gas is relatively small.

It is also a good constitution to include voltage changing means for changing the high voltage potential applied between the discharge electrode of the ion generating means and the counter electrode (invention 12). According to the above structure, the deodorizing performance can be changed in accordance with the amount of odor components contained in the gas.

In addition, the deodorizing device of claim 1 to 12 can be assembled in the storage of the direct-cooling refrigerator. The direct-cooling refrigerator does not have a fan device for forcibly circulating cold air in the storage, but according to the above configuration, even if cold air does not circulate in the storage, the cold air is actively blown into the duct to efficiently deodorize odors in the cold air. The deodorizing effect is improved because it can be brought into contact with the means.

1 shows a first embodiment of the present invention and is a schematic longitudinal cross-sectional view of a deodorizing device.

Figure 2 is a perspective view showing the internal structure of the deodorizing device.

3 is a longitudinal side view of the direct-cooling refrigerator.

4 is a functional block diagram showing an electrical configuration.

5 is a schematic view showing a refrigeration cycle.

Fig. 6 is a diagram corresponding to Fig. 1 showing a second embodiment of the present invention.

Fig. 7 is a diagram corresponding to Fig. 1 showing a third embodiment of the present invention.

Fig. 8 is a view corresponding to Fig. 1 showing a fourth embodiment of the present invention.

Fig. 9 is a diagram corresponding to Fig. 1 showing a fifth embodiment of the present invention.

Fig. 10 is a view corresponding to Fig. 1 showing a sixth embodiment of the present invention.

Fig. 11 is a diagram corresponding to Fig. 1 showing a seventh embodiment of the present invention.

Figure 12 corresponds to Figure 3 showing an eighth embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

9: deodorizer

26: duct

27, 51: direct current discharge mechanism (ion wind generating means)

28 photocatalyst module (deodorization means)

29: ozone decomposition catalyst filter (ozone deodorization means)

30: discharge electrode (discharge means for ozone generation, ozone deodorization means)

31: counter electrode (discharge means for ozone generation, ozone deodorization means)

32: discharge electrode (discharge means for ultraviolet ray generation, ozone deodorization means, discharge means for ozone generation)

33: counter electrode (ultraviolet ray generating discharge means, ozone deodorizing means, ozone generating discharge means)

34: photocatalyst filter

35 control device (voltage change means)

43: high voltage application unit (voltage change means)

52: activated carbon filter (deodorization means)

Hereinafter, a first embodiment in which the deodorizing device of the present invention is installed in a refrigerator will be described with reference to FIGS. First, Figure 3 shows a longitudinal side view of the refrigerator according to the present embodiment. 3, the inside of the refrigerator main body 1 which consists of a heat insulating housing is isolate | separated into the upper refrigerator compartment 3 and the lower freezer compartment 4 by the heat insulation partition wall 2. As shown in FIG.

The vegetable compartment 6 is formed in the lower part in the said refrigerator compartment 3 by the partition plate 5. The lower case 7 and the upper case 8 mounted above the lower case 7 are accommodated in the vegetable chamber 6. Moreover, the deodorizing apparatus 9 is arrange | positioned in the rear part of the upper part of the said partition plate 5 inside the said refrigerator compartment 3. The structure of the said deodorizing apparatus 9 is mentioned later. In addition, a freezing case 10 is disposed above the partition plate 5. In the inner wall of the refrigerating compartment 3, a refrigerating compartment cooler 11 (hereinafter referred to as R cooler 11) composed of cooling piping is arranged.

On the other hand, the inside of the freezer compartment 4 is divided into two upper and lower stages by the partition plate 12, the case 13 is disposed in the upper freezer compartment 4, the upper case (in the freezer compartment 4 in the lower portion of the counter) 14) and the lower case 15 are arranged. A freezer compartment cooler 17 (hereinafter referred to as an F cooler 17) is disposed behind the partition plate 12 inside the freezer compartment 4 via an attachment plate 16.

Moreover, the machine room 18 is formed in the rear part of the lower part of the said refrigerator main body 1, and the compressor 19 of a refrigeration cycle is arrange | positioned in the machine room 18. As shown in FIG. The compressor 19 is a reciprocating type which uses the comp motor 20 (refer to FIG. 4) as a drive source.

Fig. 5 shows a refrigerating cycle of the refrigerator according to the present embodiment, wherein the discharge port of the compressor 19 is connected to the input port of the flow path valve 22 via the condenser 21. As shown in Figs. The flow path valve 22 selectively opens the RF output port and the F output port, and the switching operation is configured to be performed based on the forward and reverse of the valve motor 23 (see FIG. 4).

The RF output port of the flow path valve 22 is connected to the inlet of the R cooler 11 via the RF capillary tube 24. An inlet of the F cooler 17 is connected to an outlet of the R cooler 11, and an outlet of the F cooler 17 is connected to a suction port of the compressor 19. Therefore, when the RF output port is opened, the refrigerant discharged from the compressor 19 is supplied to both the R cooler 11 and the F cooler 17.

On the other hand, the F output port of the flow path valve 22 is connected between the outlet of the R cooler 11 and the inlet of the F cooler 17 via the F capillary tube 25. Therefore, when the F output port of the flow path valve 22 is opened, the refrigerant discharged from the compressor 19 is supplied only to the F cooler 17.

Next, the structure of the deodorizing apparatus 9 is demonstrated, referring FIG. 1 and FIG. 1 and 2 are longitudinal side views and perspective views respectively showing the configuration of main parts of the deodorizing device 9. The deodorizing device 9 is configured such that a direct current discharge mechanism 27, a photocatalyst module 28, and an ozone decomposition catalyst filter 29 are arranged in order from the left side in FIG. 1 in the rectangular tubular duct 26. It is. Openings 26a and 26b are provided at the left and right ends of Fig. 1 of the duct 26, respectively, and are configured such that cold air (gas) in the reservoir flows into the duct 26 through these openings 26a and 26b. .

The DC discharge mechanism 27 is composed of, for example, a discharge electrode 30 formed in a wire form of tungsten or the like, and a pair of flat plate-type counter electrodes 31 arranged oppositely. The pair of counter electrodes 31 are arranged so as to follow a direction (that is, left and right directions) in which cold air flows through the duct 26. In addition, the discharge electrode 30 extends in a direction crossing the flow direction of cold air in parallel with the counter electrode 31, and is disposed at the center portion of the counter electrode 31 in the opposite direction. At this time, as shown in FIG. 1, the discharge electrode 30 is disposed on one side of the counter electrode 31 on the one side, in this case, shifted to the left side.

In the DC discharge mechanism 27, the counter electrode 31 is set to the ground potential, and a negative DC high voltage potential, for example, -4.5 kV, is applied to the discharge electrode 30. As a result, corona discharge occurs between the discharge electrode 30 and the counter electrode 31, and ions (negative (-) ions) are generated in the vicinity of the discharge electrode 30.

The ions generated near the discharge electrode 30 are directed toward the counter electrode 31 by the action of an electric field and impinge on neutron molecules (mainly oxygen molecules) in the gas to impart kinetic energy, and simultaneously counter electrode 31 with the neutral molecules. Headed to. Such movement of ions and neutral molecules to the counter electrode 31 is called an ion wind. Therefore, the direct current discharge mechanism 27 functions as an ion wind generating means. In this embodiment, since the discharge electrode 30 is disposed to the left of the center line A of the counter electrode 31, the ion wind is inclined from the discharge electrode 30 to the counter electrode 31 to the right. Flows into.

As a result, an airflow is generated in the duct 26 and circulated in the direction indicated by the arrow B in FIG. 1, resulting in airflow from the opening 26a on the left side into the duct 26. Inflow. And the cold air which flowed into the duct 26 flows through the inside of a duct in the direction of arrow B, and flows out to the opening part 26b of the right side. Therefore, in the following description, the openings 26a and 26b are referred to as inlets 26a and outlets 26b, respectively.

In addition, the position of the discharge electrode 30 with respect to the counter electrode 31 is the duct (when a DC-high voltage potential of -4.5 kV is applied between the discharge electrode 30 and the counter electrode 31). 26), air flow of about 0.1 to 0.2 m / sec is set.

On the other hand, the photocatalyst module 28 includes a plurality of discharge electrodes 32 formed in a wire shape with tungsten or the like, two counter electrodes 33 formed in a flat plate shape, the discharge electrodes 32 and a counter electrode 33, It consists of two photocatalyst filters 34 arrange | positioned in between.

Like the said discharge electrode 30, the said some discharge electrode 32 is extended in the direction crossing the circulation direction of cold air, and is arrange | positioned in a line in the up-down direction. The two counter electrodes 33 form a grid and are arranged to sandwich the discharge electrode 32 from the front and the rear in the flow direction of cold air. Therefore, the counter electrode 33 on the left side is disposed in the duct 26 so as to face the DC discharge mechanism 27.

Further, the photocatalyst filter 34 is composed of a base made of porous ceramics (for example, alumina, silica, etc.) and a photocatalyst material such as titanium oxide, which is applied to the surface of the base and fixed by drying or sintering. have.

In the photocatalyst module 28, the counter electrode 33 is referred to as a ground potential, and a positive pulse DC high voltage, for example, a pulsed high voltage of about +10 kV, is applied to the discharge electrode 32. . As a result, discharge occurs between the discharge electrode 32 and the counter electrode 33, and ultraviolet rays (wavelength 380 nm or less) are generated. Thus, the discharge electrode 32 functions as discharge means for generating ultraviolet rays.

By the way, when a direct-current high voltage potential of -4.5 kV is applied to the discharge electrode 30 of the said direct-current discharge mechanism 27, discharge will generate | occur | produce ozone with an ion. In addition, when a discharge occurs by applying a pulsed DC high voltage potential of about +10 kV to the discharge electrode 32 of the photocatalyst module 28, ozone is generated together with ultraviolet rays. Therefore, in this embodiment, the discharge electrodes 30 and 32 and the ozone decomposition catalyst 29 constitute ozone deodorizing means, and the discharge electrodes 30 and 32 function as discharge means for ozone generation.

4 shows the electrical configuration of the refrigerator according to the present embodiment, in which the control device 35 includes an R temperature sensor 36, an F temperature sensor 37, an R evaporator temperature sensor 38, and an F evaporator temperature sensor. 39, the R door switch 40, and the V door switch 41 are connected.

The R temperature sensor 36 and the F temperature sensor 37 are both constituted by thermistors, and output temperature signals of voltage levels corresponding to temperatures in the refrigerating chamber 3 and the freezing chamber 4, respectively. The R evaporator temperature sensor 38 and the F evaporator temperature sensor 39 are both composed of thermistors, and output a temperature signal having a voltage level corresponding to the surface temperature of the R cooler 11 and the F cooler 17, respectively. The R door switch 40 and the V door switch 41 are switches for detecting the opening and closing of the refrigerating compartment door 3a and the vegetable compartment door 6a, respectively, and output the opening and closing detection signal.

The operation control program of the refrigerator is stored in the internal R0M of the control device 35, and the comp motor 20 and the valve are based on the temperature signals from the temperature sensors 36 to 39 according to the control program. The drive control is performed by the motor 23 via the drive circuit 42. In addition, the control device 35 drives and controls the high voltage applying unit 43 to apply a negative DC high voltage to the discharge electrode 30 of the DC discharge mechanism 27 and drive control the high voltage applying unit 44. To apply a positive pulsed DC high voltage to the discharge electrode 32 of the photocatalyst module 28.

Next, the operation of the present embodiment will be described centering on the deodorizing action in the deodorizing device 9. When the operation of the deodorizing device 9 is started by the control device 35, high voltage discharge occurs between the discharge electrode 30 and the counter electrode 31 in the DC discharge mechanism 27, and ion wind is generated. At the same time ozone is generated. In addition, high voltage discharge occurs between the discharge electrode 32 and the counter electrode 33 in the photocatalytic module 28, and ultraviolet rays and ozone are generated.

As a result, airflow in the direction of arrow B is generated in the duct 26, whereby cold air in the refrigerating chamber 3 including the malodorous component flows into the duct 26 from the inlet port 26a, and the direct current discharge mechanism It reaches (27). Then, when passing through the DC discharge mechanism 27, ozone and cold air generated by the high voltage discharge are mixed to face the photocatalyst module at the next stage.

In the photocatalyst module 28, ultraviolet rays generated by the high voltage discharge are irradiated to the photocatalyst filter 34, and titanium oxide receives the light energy of the ultraviolet rays and becomes active to achieve a photocatalytic effect. As a result, odor components, such as ammonia contained in cold air, are oxidatively decomposed.

In the photocatalyst module 28, ozone is generated together with the ultraviolet rays by the high voltage discharge. Therefore, the cold air mixed with ozone in the direct-current discharge mechanism 27 is mixed with ozone as it passes through the photocatalyst module 28 to reach the ozone decomposition catalyst filter 29 at the next stage. In the ozone decomposition catalyst filter 29, ozone is decomposed to generate active oxygen, and odor components and the like are oxidatively decomposed by the oxidizing power of the active oxygen.

The cold air deodorized as described above flows out into the refrigerating chamber 3 from the outlet 26b of the duct 26.

As described above, according to the present embodiment, a direct current discharge mechanism 27 is provided which generates ion wind by high voltage discharge and generates air flow in the direction of arrow B in the duct 26 by the ion wind. It is configured to actively blow out the cool air in the reservoir into the duct 26, and then discharge it into the reservoir, so that even in a direct-cooling refrigerator that is not configured to circulate the cold air in the reservoir, the odor component in the cold air can be efficiently removed. Can be.

In addition, the DC discharge mechanism 27 is configured such that air flow in the direction of the arrow B in the duct 26 is generated by a simple configuration in which the discharge electrode 30 is disposed on one side of the counter electrode 31 at the center line A. For this reason, compared with the structure which distribute | circulates cold air in the duct 26 by a fan apparatus, it can aim at a quiet and miniaturization.

The direct current discharge mechanism 27 was disposed upstream of the photocatalyst module 28, and the discharge electrode 30 was disposed upstream of the center line A of the counter electrode 31. As a result, the counter electrode 31 can be kept away from the photocatalytic module 28, and a discharge is generated between the counter electrode 31 and the discharge electrode 32 and the counter electrode 33 of the photocatalytic module 28. You can prevent it from happening. In addition, the discharge electrode 30 was used as the ground potential of the counter electrode 31 and the counter electrode 33 of the photocatalyst module 28, respectively. For this reason, discharge can be prevented between the counter electrodes 31 and 33.

In addition, in this embodiment, ozone is generated by applying a negative DC high voltage to the DC discharge mechanism 27, and at the same time, a photocatalyst module 28 is provided to generate ultraviolet rays and ozone to decompose odor components and the like by ultraviolet rays and ozone. And removal. For this reason, various malodorous components etc. can be decomposed | disassembled and removed, and a strong deodorizing effect can be exhibited. In addition, unlike deodorization apparatus using an adsorbent such as activated carbon, there is no need to perform an operation such as exchanging the adsorbent or replenishing the chemical component.

In addition, since the ozone decomposition catalyst filter 29 is provided so as to decompose ozone, an excessive increase in the ozone concentration in the refrigerating chamber 3 can be prevented, and corrosion of each member in the storage can be prevented. .

In addition, since the DC discharge mechanism 27 is constituted by the wire-shaped discharge electrode 30 and the plate-shaped counter electrode 31, the deodorizing treatment is performed in the duct 26 as compared with the creepage discharge system that discharges through the insulator. It can take a lot of space to do this. In addition, since two counter electrodes 31 are arranged on both sides of the discharge electrode 30, the amount of generated ion wind can be increased compared to the configuration in which the counter electrode is disposed on only one side of the discharge electrode 30, and the deodorization efficiency is improved. You can.

In the photocatalyst module 28, since the photocatalyst filter 34 is disposed between the discharge electrode 32 and the counter electrode 33, the photocatalyst module 28 is generated by the high voltage discharge between the discharge electrode 32 and the counter electrode 33. The non-directional ultraviolet rays can be irradiated to the photocatalyst filter 34 efficiently, and the photocatalytic reaction can be advanced efficiently. Since the counter electrode 33 and the photocatalyst filter 34 are disposed on both the upstream side and the downstream side of the discharge electrode 32, the utilization efficiency of the ultraviolet rays generated in the photocatalytic module 28 can be improved.

In addition, since the said photocatalyst filter 34 was comprised by fixing titanium oxide on the surface of the base which consists of porous ceramics, even if it arrange | positions in the circulation path of cold air, it does not disturb the distribution of the cold air very much. In addition, since the area for fixing the titanium oxide to the base can be made larger, the photocatalytic reaction can be efficiently carried out even in a state where the amount of titanium oxide used is as small as possible.

Fig. 6 shows a second embodiment of the present invention, and explains the differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the same part as 1st Example. In this second embodiment, a plurality of ion wind generating means of the deodorizing device 9 is configured by disposing a plurality of, for example, two DC discharge mechanisms 27 in the duct 26. In this case, the direct-current discharge mechanisms 27 are arranged in series in the gas flow direction. Thus, the direct current discharge mechanism 27 functions as a discharge unit.

According to the said structure, since the generation amount of the ion wind in the direct-current discharge mechanism 27 can increase, and the quantity of cold air which flows into the duct 26 can be increased, deodorization performance can be improved. In addition, since the other structure is the same as that of 1st Example, the effect similar to 1st Example can be acquired.

Fig. 7 shows a third embodiment of the present invention, and explains the differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the same part as 1st Example. In this third embodiment, a plurality of, for example, four counter electrodes 31 arranged in parallel in the direction orthogonal to the flow direction of the airflow, and the direct-current discharge mechanism 27 as the ion wind generating means of the deodorizer 9, It consists of the discharge electrode 30 arrange | positioned between the two counter electrodes 31 opposing among the said counter electrodes 31. As shown in FIG. Also in this case, the discharge electrode 30 is disposed on the left side of the center line A of the counter electrode 31.

According to the said structure, since the generation amount of the ion wind in the direct current discharge mechanism 27 can increase, and the quantity of the cold air which flows into the duct 26 can be increased, deodorization performance can be improved. In addition, unlike the second embodiment described above, the apparatus is not enlarged in size. In addition, since the other structure is the same as that of 1st Example, the effect similar to 1st Example can be acquired.

Fig. 8 shows a fourth embodiment of the present invention, and explains the differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the same part as 1st Example. In this fourth embodiment, the DC high voltage applied to the discharge electrode 30 in the DC discharge mechanism 27 of the deodorizer 9 is configured to be variably controlled. That is, the control device 35 is configured to drive control the high voltage applying unit 43 to apply a DC high voltage of -4 to -6 kV to the discharge electrode 30. Therefore, in the present embodiment, the control device 35 and the high voltage applying unit 43 function as voltage changing means.

In this case, for example, a sensor for detecting the concentration of malodorous components, for example, ammonia in the reservoir, may be provided so as to change the applied voltage in accordance with the detection result of the sensor. According to such a configuration, the deodorizing performance can be changed in accordance with the amount of malodorous components in the reservoir, and the malodorous components in the cold air can be efficiently removed. In addition, since the other configurations are the same as those of the first embodiment, The working effect can be obtained.

9 shows a fifth embodiment of the present invention, and describes a difference from the first embodiment. In addition, the same code | symbol is attached | subjected to the same part as 1st Example. In this fifth embodiment, the photocatalyst module 28 in the deodorizer 9 is omitted. That is, in this deodorizing device 9, only the ozone is used to decompose and remove the odor component.

According to the above structure, although the deodorizing performance is inferior to that of the deodorizing device 9 of the first embodiment, the device can be miniaturized by omitting the photocatalytic module 28.

Fig. 10 shows a sixth embodiment of the present invention, and explains the differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the same part as 1st Example. In this sixth embodiment, the deodorizing device 9 is configured by arranging the DC discharge mechanism 51 and the activated carbon filter 52 in the duct 26. The DC discharge mechanism 51 is constituted of the discharge electrode 30 and the counter electrode 31 similarly to the DC discharge mechanism 27 shown in the first embodiment, but the positive electrode high voltage potential is applied to the discharge electrode 30. For example, it is comprised so that the DC high voltage potential of +4.5 kV may be applied.

In the above configuration, when a direct current high voltage potential of +4.5 kV is applied to the discharge electrode 30, ion wind is generated, and airflow in the direction of arrow B flows in the duct 26. As a result, cold air in the reservoir flows into the duct 26 via the inlet port 26a, passes through the direct-current discharge mechanism 51, and reaches the activated carbon filter 52.

When passing through the activated carbon filter 52, the odor component in the cold air is adsorbed by the activated carbon filter 52, and the deodorized cold air is discharged from the outlet 26b into the reservoir. Therefore, according to the deodorizing apparatus 9 of the said structure, since the cold air containing the bad smell component in a reservoir can be actively taken in in the duct 26, the bad smell component in a reservoir can be removed efficiently.

Moreover, according to the said structure, since the deodorizing apparatus 9 was comprised by arrange | positioning the DC discharge mechanism 51 and the activated carbon filter 52 in the duct 26, the apparatus can be miniaturized.

In addition, in the deodorization apparatus 9 of the said structure, when the adsorption | suction performance of the activated carbon filter 52 is saturated, the replacement operation | work is needed. However, as compared with the conventional deodorization apparatus having only an activated carbon filter, since the cold air is actively introduced into the duct 26, the deodorization performance is improved.

In addition, the ozone concentration generated by the DC discharge mechanism 51 when the DC high voltage potential of +4.5 kV is applied to the discharge electrode 30 is about 1 of the ozone concentration generated by the DC discharge mechanism 27. Reduce to / 5. Therefore, in the deodorization apparatus 9 of the said structure, even if an ozone decomposition catalyst is not provided, the ozone density | concentration in a reservoir does not increase excessively.

Fig. 11 shows a seventh embodiment of the present invention and explains the differences from the sixth embodiment. In addition, the same code | symbol is attached | subjected to the same part as 6th Example. That is, in this seventh embodiment, the photocatalyst module 28 is disposed downstream of the DC discharge mechanism 51 by switching to the activated carbon filter 52 in the deodorizing device 9.

When a positive pulsed DC voltage is applied between the discharge electrode 32 and the counter electrode 33 of the photocatalyst module 28, ozone is generated together with ultraviolet rays, but the amount of ozone generated is small. Therefore, according to the above configuration, the cold air introduced into the duct 26 via the inlet 26a mainly oxidizes and decomposes odor components such as ammonia by the photocatalytic action when passing through the photocatalyst module 28.

In addition, as described above, the amount of ozone generated in the DC discharge mechanism 51 is also small. For this reason, even if an ozone decomposition catalyst is not installed, the ozone concentration in a reservoir does not rise excessively.

FIG. 12 shows an eighth embodiment in which the present invention is applied to a refrigeration refrigerator of a type in which cold air is circulated in a reservoir, and illustrates a difference from the first embodiment. In the freezer refrigerator according to the present embodiment, cooling in the refrigerating chamber 3 and the vegetable chamber 6 is configured to be performed by the freezer compartment cooler 61 (hereinafter R cooler 61).

That is, the cooler chamber 63 for a refrigerating chamber is formed in the inside of the said vegetable chamber 6 by the partition wall 62. As shown in FIG. The refrigerator unit fan device 64 is arrange | positioned at the upper part within the said cooler chamber 63, The cylindrical cold air discharge part 62a is provided in the upper part of the said partition wall 62 corresponding to this fan apparatus 64. have. The tip opening of the cold air discharge part 62a is located in the upper case 8 accommodated in the vegetable chamber 6. A cover 8b having a cold air outlet hole 8a is attached to the upper surface of the upper case 8 so as to be openable and openable.

In addition, the R cooler 61 is disposed below the cooler chamber 63. In addition, a louvered cold air inlet 65 is provided in the front portion of the lower part of the partition wall 62.

On the other hand, the cold air duct 67 is formed in the inside and upper part of the said refrigerator compartment 3 by the substantially L-shaped duct cover 66. As shown in FIG. A plurality of cold air discharge holes 66a are formed in the duct cover 66.

In the above configuration, when the fan device 64 is operated, a part of the cold air in the cooler chamber 63 is discharged from the cold air discharge port 62a into the upper case 8 as shown by the arrow in FIG. It is discharged to the space between the upper case 8 and the partition plate 5 through the outflow hole 8a. Thereafter, some of the cold air flows into the lower case 7 and the other flows along the front and lower surfaces of the lower case 7 and then returns to the cooler chamber 63 via the cold air inlet 65.

On the other hand, the remainder of the cold air in the cooler chamber 63 rises through the cold air duct 67, as shown by the arrow in FIG. 12, and the cold room 3 from the upper end of the cold air discharge hole 66a and the cold air duct 67. Is discharged into). And it flows in into the duct 26 of the deodorizing device 9 from the inflow port 26a through the freezing case 10 and the partition plate 5. That is, in this embodiment, the deodorizing device 9 is arranged in the circulation path of cold air.

Therefore, according to the said structure, in addition to the ion wind which generate | occur | produces in the direct-current discharge mechanism 27, cold air can be blown in into the duct 26 efficiently using the flow of cold air which circulates in a reservoir.

By the way, in the freezer refrigerator, when the driving of the fan device 64 is stopped, cold air does not circulate in the reservoir. However, in the deodorization device 9, even when the flow of cold air circulating in the reservoir is stopped, the ions in the reservoir are positively generated by the ion wind generated in the direct current discharge mechanism 27 into the duct 26. It can flow in. This improves the deodorization efficiency in the reservoir.

In addition, this invention is not limited to the Example described above and described in drawing, For example, the following deformation | transformation or expansion is possible.

In the DC discharge mechanism, the counter electrode is provided so as to sandwich the discharge electrode from both sides, but the counter electrode may be provided only on one side. The counter electrode may be a grid or a wire. In this case, since the gas flow is not hindered so much, the counter electrode can be provided on one side of the airflow direction of the discharge electrode so as to cross the airflow direction.

You may make a counter electrode the negative potential. In this case, the repulsive force acts between the ions generated in the discharge electrode and the counter electrode. For this reason, in a direct current discharge mechanism, when the discharge electrode is arrange | positioned on the one side rather than the center of the airflow direction of a counter electrode, the ion wind which flows from a discharge electrode toward one side generate | occur | produces. Specifically, when the counter electrode 31 of the direct-current discharge mechanism 27 in the first embodiment is set to the negative potential, the ion wind flows in the direction indicated by the arrow B in the opposite direction.

In the sixth and seventh embodiments, the DC discharge mechanism 51 may be disposed downstream of the deodorizing means (active carbon filter 52, photocatalyst module 28). In the above embodiment, since the direct current discharge mechanism 51 functions only as a blowing means, the same action and effect can be obtained even if it is arranged on either the upstream side or the downstream side of the deodorizing means.

The polarity of the voltage applied to the discharge electrode 32 of the photocatalyst module 28 may be negative. In this case, since the generation amount of ozone increases, the effect that the deodorization efficiency by ozone (active oxygen) improves can be acquired.

The deodorizing device according to the present invention may be applied to a closed space other than a refrigerator, for example, a shoe box, a closet, a toilet, a dressing room of a sports center, or the like.

As apparent from the above description, according to the deodorizing apparatus of the present invention, a high voltage discharge is generated between the discharge electrode of the ion wind generating means and the counter electrode to generate the ion wind, and the gas is actively directed toward the deodorizing means. Since it was comprised so that it may contact efficiently, deodorization performance will improve. In addition, it is possible to achieve miniaturization and low noise as compared with the configuration in which a fan device is installed to distribute gas. In addition, since ozone is also generated by the high voltage discharge, the odor component can be decomposed and removed using the oxidizing power of ozone.

Claims (13)

Ion wind generating means having a counter electrode and a discharge electrode and generating a high voltage discharge by applying a direct current high voltage between the discharge electrode and the counter electrode; Deodorizing means for removing odor components contained in the gas, The deodorizing means comprises a photocatalyst module comprising a photocatalyst filter which decomposes malodorous substances or harmful substances contained in a gas by means of a discharging means for generating ultraviolet rays by generating ultraviolet rays by a high voltage discharge, and a photocatalytic action generated by irradiating the ultraviolet rays. Deodorizing device characterized in that is provided with. The duct according to claim 1, further comprising: a duct having a gas circulation path therein and accommodating deodorizing means comprising ion wind generating means and a photocatalyst module; And the deodorizing means is disposed on an upstream side from the center of the air flow direction of the counter electrode, and the deodorizing means is disposed downstream of the ion generating means. The photocatalyst filter of claim 1, wherein the photocatalytic filter of the photocatalyst module is configured by fixing photocatalyst particles on the surface of a base member made of a porous ceramic, and discharging means for generating ultraviolet rays is opposed to each other via the photocatalyst filter. Consisting of a discharge electrode and a counter electrode arranged, The counter electrode of the discharge means for generating ultraviolet rays is disposed so as to face the ion generating means, and the counter electrode of the discharge means for generating ultraviolet rays and the counter electrode of the ion generating means are configured to be a ground potential. 3. The deodorizing means according to claim 1 or 2, wherein the deodorizing means comprises an ozone generating means for generating ozone by high voltage discharge and an ozone deodorizing means comprising an ozone decomposition catalyst filter for decomposing the ozone. Deodorizing device. The deodorizing apparatus according to claim 1 or 2, wherein the deodorizing means comprises an activated carbon filter for adsorbing malodorous components, harmful substances, and the like contained in the gas. The ion generating means according to claim 1 or 2, wherein the ion generating means is disposed between the pair of plate-like counter electrodes arranged in a direction orthogonal to the airflow direction, and the pair of plate-shaped counter electrodes, and the airflow is also parallel to the counter electrode. A deodorizing apparatus, comprising a wire-shaped discharge electrode extending in a direction perpendicular to the direction. The ion generating means according to claim 1 or 2, wherein the ion generating means is disposed between the pair of plate-like counter electrodes arranged in a direction orthogonal to the airflow direction, and the pair of plate-shaped counter electrodes, and the airflow is also parallel to the counter electrode. A deodorizing apparatus, characterized in that a plurality of discharge units made of wire-type discharge electrodes extending in a direction perpendicular to the direction are arranged in series in the airflow direction. The ion generating unit is disposed between each of a plurality of plate-like counter electrodes arranged in parallel in a direction orthogonal to the airflow direction, and between two counter electrodes facing each other among the plurality of counter electrodes. A deodorizing apparatus, comprising: a plurality of wire-shaped discharge electrodes extending in a direction parallel to the counter electrode and in a direction perpendicular to the air flow direction. The deodorizing apparatus according to claim 1 or 2, wherein a negative high voltage potential is applied to the discharge electrode of the ion generating means. The deodorizing apparatus according to claim 1 or 2, wherein a positive high voltage potential is applied to the discharge electrode of the ion generating means. The deodorizing apparatus according to claim 1 or 2, further comprising voltage changing means for changing a high voltage potential applied between the discharge electrode of the ion generating means and the counter electrode. The deodorization apparatus according to claim 1 or 2, wherein the deodorization apparatus is assembled in a storage compartment of the direct-cooling refrigerator. delete