JPS61279248A - Method and apparatus for sterilizing and deodorizing air of wide region - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for sterilizing and deodorizing air present in a wide range of areas, and to an apparatus configuration for carrying out this method.

[Conventional method] The bad odors generated in food processing factories, kitchens of food and beverage-related industries, hotel cafeterias, hospitals, beauty salons, etc. are extremely widespread and can be dealt with by installing strong ventilation systems. There is no other economical way to deal with bad odors, and the only unstable way to deal with bad odors that occur in relatively small areas such as storage rooms and refrigerators is by using adsorbents such as activated carbon. In addition, the reality is that it has not been possible to sterilize the air throughout the room, which is required particularly in hospitals, pharmaceutical manufacturing factories, cosmetic manufacturing factories, etc., as reliably as described above.

[Problems to be solved] As mentioned above, with conventional methods, sterilization and deodorization of air existing in a wide area are unstable and insufficient, and in some cases, pollution may be released outside the area. Become.

The first object of the present invention is to eliminate the drawbacks of the above-mentioned conventional methods, the second object is to provide a method and apparatus that can be applied at economical running costs, and the third object is to provide a method and apparatus that can be applied at economical running costs.
The aim is to provide an inexpensive and simply constructed device for carrying out the method.

[Means for Solving the Problems] In order to achieve the above-mentioned objects, the present invention first uses 184.9NM and 2
The air to be treated is introduced at a constant flow rate into a chamber which is equipped with an ultraviolet lamp that simultaneously emits ultraviolet light with a wavelength of 53.7 NM, and then this inflowing air is discharged from the chamber. Adopts a configuration that
Next, as an apparatus for carrying out the method of the present invention, 1
A chamber equipped with an ultraviolet lamp that simultaneously emits ultraviolet rays having wavelengths of 84.9 NM and 253.7 NM; an intake duct having an intake port in the factory, and an exhaust duct having an exhaust port in the factory, and arranged to allow air to flow in through the intake port and to discharge this inflow air from the discharge port through the inside of the chamber. It features a configuration consisting of an air blower.

[Function] In the above method according to the present invention, the ultraviolet light with a wavelength of 184.9 NM emitted from the ultraviolet lamp converts oxygen in the air in the irradiation area to ozone, and this ozone is added to the air. The contained malodorous components are oxidized and decomposed, but at this time, the inflowing air is always in a fluid state in the chamber equipped with this ultraviolet lamp, and the ozone generated above is effectively absorbed into the target malodorous components. It exerts an effective deodorizing function when it comes into contact with. At the same time, 253.7NM is emitted.
Ultraviolet rays with wavelengths of 1 to 100% also effectively sterilize air in a fluidized state within the chamber. Further, the deodorizing and sterilizing functions of each of the above ultraviolet rays are reliably and stably exerted on the air forced into the chamber, and moreover, within an extremely short period of time.

Further, in the device according to the present invention, the chamber prevents the emitted ultraviolet rays from being irradiated to the outside, and
To ensure and stabilize the processing function by limiting the area to be deodorized and sterilized.

Further, the intake duct guides the air to be treated to the irradiation area of the installed ultraviolet lamp, and the exhaust duct efficiently discharges the treated air to the outside without stagnation. Additionally, the blower forces the intake and exhaust air into the chamber at a constant flow rate.

[Example 1 Next, the present invention will be explained in detail.

An apparatus 1 for sterilizing and deodorizing air in a wide area according to an embodiment is shown in FIG. 1 as a partial longitudinal sectional front view, and in FIG. 2 as an AA longitudinal sectional view.

This device 1 has a cylindrical chamber 2 with both ends closed and a rectangular cross section, and the front wall of the chamber 2 is configured to be openable and closable by a hinge 3 as a door portion 2a.
Further, on the rear wall of the chamber 2, a holder 6.6 with a lamp holder 5.5 is fixedly installed at a distance, and a cylindrical ultraviolet lamp 4 is installed between these lamp holders 5.5. is installed. Further, on the outer circumferential surface of the chamber 2, an intake duct 7 and an exhaust duct 8, each having an L-shaped outer shape, are connected to the chamber 2 so as to allow ventilation. The exhaust duct 8 is provided on the lower peripheral surface of the chamber 2 located near one of the lamp holders 5, and the exhaust duct 8 is provided on the lower peripheral surface of the chamber 2 located near the other lamp holder 7. At this time, the intake port 9 and the exhaust port 10 of the main parts of the intake duct 7 and the exhaust duct 8 are arranged so as to face forward, respectively. Furthermore, fans 13 and 13 are fixedly installed at the ends of the intake port 9 and the exhaust port 10 via flanges, respectively.

The chamber 2 characterized by the above configuration is housed in a case 1.6, and is horizontally fixed on the inner surface of the rear wall of this case 16 by a support frame 17, and the fans 13.13 on the ducts 7 and 8 are respectively It is fitted onto a guide frame 14.14 bored on the front wall of the case 16. Further, the upper part of the front wall of this case 16 is formed as a door part 18, and this door part 18 can be opened and closed by a hinge 19, and a stopper rod is provided in the upper edge of the vertically provided front wall of this case 16. 20 is fixedly installed with a portion thereof protruding upward. Also, a guide frame 1 is provided on the outer surface of the front wall of this case 16.
Corresponding to 4.14, gear rallies 15 and 15 are provided to provide directivity during intake and exhaust, respectively.

In the wide-area air sterilization and deodorization device 1 having the above-described structural features, first, the ultraviolet lamp 4 is turned on by being connected to a power source via a ballast in advance. Next, by operating the intake and exhaust fans 13.13 simultaneously, the air to be treated is continuously flowed in from the intake port 9 at a constant rate, for example, at a rate of 3 drops. This inflowing air is guided by the intake duct 7 and flows into the chamber 2, and within the chamber 2, this inflowing air flows particularly within the ultraviolet irradiation area of the ultraviolet lamp 4. The flow time within this chamber 2 is an extremely short time of 0.05 to 0.1 seconds. The treated air thus treated is drawn into the exhaust duct 8 and is further discharged from the exhaust port 10 via the gear rally 15.

In addition, the outfit of the above example? ! At f1, the ultraviolet lamp 4 is replaced by opening the door 18 on the case 16 and the door 2a on the chamber 2, respectively.

In addition, in a device that uses both intake and exhaust fans 13, 13 as in the above embodiment, each of these fans 13.
3.13 can be individually adjusted in strength to perform processing in the chamber 2 under reduced pressure or increased pressure, but it is also possible to apply either one of the intake and exhaust fans as described above. It is included in the present invention as long as air flow can be obtained.

The operating time of the sterilization and deodorization device according to the present invention that utilizes the method according to the present invention described above is not determined in part depending on the capacity of the application area and the type of components to be treated, but 2.
The function can be fully demonstrated by operating the device for ~30 minutes.

[Example 2] Next, in Example 2 concerning the deodorizing method according to the present invention, the sterilization and deodorization apparatus 1 shown in Example 1 is not applied. In this case, the model of the ultraviolet lamp 4 is UV0.
-40, and the power consumption is 66W with a power supply of AC 100V. Further, the flow rate in the chamber 2 was 300 m, the flow rate was also 7% r, and the actual irradiation time of the ultraviolet rays in the chamber 2 was about 0.05 seconds.

This apparatus 1 was placed at a relatively high position in the areas shown in (a) to (h) of Table 1 below, and the malodor sources to be treated in each area were treated at room temperature. The results of this treatment are shown in Table 1 below.

Table 1> ◎Indicates that the odor has been deodorized to the extent that it cannot be detected by the sense of smell.

The treatment results shown in Table 1 show that according to the method and apparatus of the present invention, it is possible to eliminate bad odors to the extent that they cannot be detected by the sense of smell in any case, and also to identify the source of the bad odor. This shows that the deodorizing function can be sufficiently achieved by a short scratching operation of several minutes when the content is weak, and within 30 minutes when the content is strong.

[Example 3] Next, an example regarding the sterilization method according to the present invention will be shown. In this third embodiment, the apparatus 1 having the same configuration as in the first embodiment is applied, and as shown in FIG.
7>.

In FIG. 3, only the main body portion 1a of the device 1 is shown and the case 16 portion is omitted.

A source 21 to be treated is placed near the intake port 9 of this device 1a.
In addition, the sources 22 to be treated are arranged near the exhaust ports 10, respectively.

In addition, the above-mentioned sources 21 and 22 to be treated are agar plate media, respectively, and Escherichia colt l
ID0-55 (E. coli), 5taphylococc
us aureu-sFDA 209P (Staphylococcus aureus), Pseudom.

-nas aeruginosa IID P-1 (Pseudomonas aeruginosa), Bacill-us 5ubtilis A
Various strains of TCC6633 (Bacillus subtilis) were inoculated into trypto soy broth medium, and after culturing at 35°C for 18 hours,
Bacterial count is 1.03 x 10'/'+ using sterile physiological saline
1) Diluted to 1. This diluted solution (0.1) was spread on a trypto soy agar plate prepared in advance. The agar plates prepared in this manner were cultured as they were and were used as subjects α and β.

The target sources 21 and 22 thus adjusted were treated by operating the device 1a for 30 minutes under the same conditions as in Example 2, and after the treatment, they were cultured at 35°C for 24 hours to determine the number of grown colonies. were measured and used as treatment targets α' and β', respectively. The results of this treatment are shown in Table 2 below.

<Table 2> The processing results shown in Table 2 above show that the method and apparatus of the present invention can bring the source to be treated, which is a medium prepared by smearing various bacteria, into a completely sterile state within a short period of time. This shows that the sterilization effect by the method and apparatus of the present invention is extremely large and efficient.

In addition, it has been confirmed that the sterilization and deodorizing effects of the method and device of the present invention described above are highly effective in maintaining freshness and inhibiting spoilage when applied to the preservation of perishable foods. ing.

[Effects of the Invention] As mentioned above, the present invention can sterilize and deodorize the air to be treated that exists in a wide area, and also sterilize and deodorize the air to be treated that exists in a wide area without causing any harmful effects due to ultraviolet rays. Effective and efficient processing for freshness preservation, sterilization, and deodorization has become possible. Further, according to the present invention,
The equipment configuration for its implementation is extremely simple,
Also, its running cost is low.

[Brief explanation of drawings]

Fig. 1: Partial vertical cross-sectional front view of a wide area air sterilization and deodorization device in an embodiment of the present invention; Fig. 2: Same A-
A vertical sectional view, FIG. 3...A perspective view explaining the application example. Explanation of drawing symbols 1... Air sterilization and deodorizing device, 2... Chamber,
4... Ultraviolet lamp, 7... Intake duct, 9...
Intake port, 8...Exhaust duct, 10...Exhaust port, 13
···fan. H - Figure 2

Claims (2)

[Claims] (1) Air to be treated is introduced at a constant flow rate into a chamber equipped with an ultraviolet lamp that simultaneously emits ultraviolet rays with wavelengths of 184.9 NM and 253.7 NM, and then this incoming air is introduced into the chamber. A method for sterilizing and deodorizing air over a wide area, characterized by discharging air from the air. (2) A chamber that is equipped with an ultraviolet lamp that simultaneously emits ultraviolet rays of wavelengths of 184.9 NM and 253.7 NM, and a chamber that is provided above the chamber so as to be able to ventilate the area irradiated with ultraviolet rays by the ultraviolet lamp in this chamber. an intake duct having an intake port at the very end thereof, and an exhaust duct having an exhaust port at the very end, which are provided in A wide area air sterilization and deodorization device characterized by a configuration consisting of a blower arranged so as to