JP3263099B2 - Sterilization deodorization method in sterilization deodorization drying equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disinfecting and deodorizing apparatus for storing articles such as towels containing water and washed dishes, and simultaneously performing a drying process by supplying hot air and a sterilizing process by injecting ozone. More particularly, the present invention relates to a sterilization and deodorization method capable of treating ozone at a very low concentration in a short time.

[0002]

2. Description of the Related Art Conventionally, this type of drying apparatus has been used in a process for drying foods such as cereals or shiitake mushrooms containing water, or a process for producing a ceramic molded product. It is well known that towels after use, tableware after washing, or small items used for drying daily miscellaneous goods such as umbrellas and shoes used in rainy weather, etc. In many cases, sterilization treatment and deodorization treatment are necessary for hygiene, and if the treatment time is relatively long, bacteria and the like may propagate during the drying treatment due to humidity and temperature conditions in the drying room. In recent years, there has been a strong demand for a device that can efficiently perform not only the drying process but also a sterilizing process and a deodorizing process at the same time. For example, a drying device provided with a germicidal lamp and a drying device provided with an ozone generator are provided. Equipment and the like have been developed and used.

[0003] However, a drying device with a germicidal lamp inside is
Since the sterilization process is performed by irradiating the ultraviolet rays to the articles in the drying chamber from a specific direction, the entire articles cannot be sterilized uniformly. On the other hand, the drying device equipped with an ozone generator injects ozone into the drying chamber. To perform sterilization and deodorization treatment,
Although the entire article is fumigated, the effect of the simple injection of ozone depends greatly on the surface condition of the article and the surrounding environmental conditions, so that uniform sterilization cannot be expected, and the sterilizing and deodorizing effect is extremely unstable. In addition to being inefficient and requiring a high concentration of ozone to achieve an effect, ozone leaking during the drying process and ozone remaining in the drying chamber at the end of the drying process adversely affect the human body. And other problems.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to pay attention to the above-mentioned reasons, and in a sterilizing deodorizing and drying apparatus using ozone for sterilizing and deodorizing treatment, it can be treated with ozone at an extremely low concentration in a short period of time. It is an object of the present invention to provide a revolutionary sterilization and deodorization method that does not leave ozone in the drying chamber at the time of termination.

[0005]

According to the constitution of the present invention, during the drying process of the article by the hot air supply means, the humidity in the drying chamber is monitored by a humidity detector, and the injection of ozone by the ozone injection means is carried out when the humidity in the drying chamber is reduced. By starting at the time of rising to a certain humidity and continuing continuously or intermittently while the constant humidity is maintained through the high humidity state, and by stopping at the end of the high humidity period in the drying room, This is a configuration in which sterilization and deodorization treatment is performed with ozone at an optimum concentration in a high temperature and high humidity state.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 1 is an explanatory view of a first embodiment of a sterilization / deodorization / drying apparatus according to the sterilization / deodorization method of the present invention, and FIG. 2 is a sterilization / deodorization / drying method according to the sterilization / deodorization method of the present invention. FIG. 3 is an overall schematic view of the first embodiment of the apparatus, and FIG. 3 is an enlarged schematic view of a main part of hot air supply means in the first embodiment of the sterilization, deodorization and drying apparatus according to the sterilization and deodorization method of the present invention. Is
It is explanatory drawing which omitted a part of 2nd Example of the sterilization deodorization drying apparatus which concerns on the sterilization deodorization method of this invention, FIG. 5 shows the sterilization deodorization drying apparatus of 2nd Example which concerns on the sterilization deodorization method of this invention. FIG. 6 is a schematic cross-sectional view of the ozone injection means in the second embodiment of the sterilization / deodorization / drying apparatus of the present invention, and FIG. 7 is a sectional view of the second embodiment of the sterilization / deodorization / drying apparatus of the present invention. FIG. 8 is a schematic cross-sectional view of the ozone injection means, FIG. 8 is an explanatory view of the ozone injection means in the second embodiment of the sterilization / deodorization / drying apparatus of the present invention, and FIG. 9 is an explanatory view of the sterilization / deodorization method of the present invention. FIG. 10 is an explanatory view showing an example of a sterilization / deodorization method in a conventional sterilization / deodorization / drying apparatus.

According to the present invention, a disinfecting and deodorizing method in a disinfecting and deodorizing and drying apparatus 1 for storing articles A such as towels containing water and washed dishes and the like, and simultaneously performing a drying process by supplying hot air and a sterilizing and deodorizing process by injecting ozone. And a hot air supply means 3 for supplying and exhausting hot air into the drying chamber 2 for carrying out a drying process, and an ozone for injecting ozone to perform a sterilization and deodorization process. This is a sterilization / deodorization treatment method in the sterilization / deodorization / drying apparatus 1 provided with the injection means 4, wherein the humidity in the drying chamber 2 is monitored by a humidity detector in the process of drying the article A by the hot air supply means 3. The injection of ozone by the ozone injection means 4 is started in a state where the humidity in the drying chamber 2 is sufficiently increased, and continuously or continuously until a state where a constant humidity is maintained through a high humidity state. By intermittently continuously,
In a high-temperature, high-humidity state, sterilization and deodorization treatment is performed with ozone at an optimum concentration.

That is, the sterilizing, deodorizing and drying apparatus 1 according to the present invention.
As shown in FIG. 1 and FIG. 2 or FIG. 4 and FIG. 5, an appropriate lid, a humidity detector that monitors the humidity in the drying chamber 2 to determine the ozone injection condition, and an ozone leak sensor ( (Not shown), etc., a towel containing moisture into the body,
By forming a drying chamber 2 for storing articles A such as tableware after washing, and arranging a hot air supply unit 3 including a gas introduction unit 3a and a gas discharge unit 3b, and an ozone injection unit 4, This is a forced convection type sterilizing, deodorizing and drying apparatus 1 that simultaneously performs a drying process by supplying hot air to the articles A in the drying chamber 2 and a sterilizing and deodorizing process by injecting ozone.

As shown in FIGS. 2 and 5, the hot air supply means 3 and the ozone injecting means 4 may be unitized and separately mounted, or may be integrated with the main body of the sterilizing, deodorizing and drying apparatus 1. They may be provided.

As shown in FIG. 2, FIG. 3 or FIG. 5, the hot air supply means 3 communicates with the drying chamber 2 through an inlet 9a which communicates with the outside air to introduce the outside air into the drying chamber 2. A gas inlet 3a having an air supply port 9b, an outlet 9c communicating with the drying chamber 2 for discharging ozone-containing air in the drying chamber 2, and an exhaust port 9d communicating with the outside air. It is composed of a gas discharge section 3b.

A filter 5 for introducing clean air and a fan 6 for forcibly sending clean air are provided in a gas flow path between the inlet 9a and the air supply port 9b of the gas inlet 3a. Is provided with a heating device 7 including a heater or the like for heating the air to form warm air.

On the other hand, the gas flow path between the outlet 9c and the outlet 9d of the gas outlet 3b is supplied to the gas passage between the ozone-containing air in the drying chamber 2 and the Mn. Fe. Ag. Ni. Pt.
Cu. Ti. Na. An ozone decomposition catalyst 8 composed of a filter-like molded body (not shown) made of a catalyst such as silica gel powder carrying a metal oxide such as K, and forcibly discharging the clean air to the outside. The fan 6 and the like are provided.

According to the present invention, an ozone injection means 4 for injecting ozone into the drying chamber 2 is formed. The ozone injection means 4 is, for example, capable of generating ozone as in the first embodiment of the present invention. It can be configured to include the device 4a, a pumping device 4b such as a pump, a raw material gas supply means (not shown), and the like, and to directly inject ozone into the drying chamber 2.

The ozone injecting means 4 is capable of injecting ozone together with the supply of hot air into the gas flow path formed in the gas inlet 3a, as in the second embodiment shown in FIGS. It may be arranged in the.

FIGS. 6 to 8 show details of the ozone injecting means 4 which is extremely effective for being disposed in the gas passage of the gas introducing portion 3a in the second embodiment. The ozone injecting means 4 of FIG. 7 includes a pair of electrodes 10a. 10b is provided as a discharge space 11 so as to face each other, and the ozone injection means 4 in FIG. 10b to discharge space 1
1 are provided so as to face each other, and each electrode pair 10a.
10b is provided.

[0017]

In order to use the germicidal deodorizing and drying apparatus 1 according to the present invention, an article A such as a towel containing water is stored in the drying chamber 2 and sealed with a lid (not shown). The supply means 3 and the ozone injection means 4 are operated, and the hot air is continuously and forcibly introduced into the drying chamber 2 by the action of the respective fans 6 of the gas introduction part 3a and the gas discharge part 3b of the hot air supply means 3. It supplies and exhausts.

First, the gas inlet 3 of the hot air supply means 3
2A, the outside air introduced through the inlet 9a flows through the filter 5 as clean air from which fine dust has been removed and dehumidified, and then is turned into warm air by the operation of the heating device 7 such as a heater. Air is supplied to the drying chamber 2 from 9b.

Next, ozone is continuously injected into the hot air convection in the drying chamber 2 by the ozone injection means 4, and then the outlet 9 of the gas discharge part 3 b of the hot air supply means 3 is discharged.
c, and is exhausted from the exhaust port 9d as clean air via the ozone decomposition catalyst 8.

Therefore, the article A in the drying chamber 2 is subjected to a drying process by continuous and forced supply and exhaust of hot air, and at the same time, a sterilizing and deodorizing process by ozone.

The present invention focuses on changes in temperature (a) and humidity (b) in the drying chamber 2 with the processing time t in the sterilizing / deodorizing / drying apparatus 1 configured as described above, and uses low-concentration ozone and FIG. 9 and FIG. 10 illustrate a sterilization and deodorization method capable of performing processing in a short time, and FIG. 9 and FIG. 10 show a processing time t of temperature (a), humidity (b), and ozone concentration (c) in the drying chamber 2.
And the operating states of the hot air supply means 3, the heating device 7 of the hot air supply means 3, and the ozone injection means 4 are shown.

In the state where the hot air supply means 3 is operated and the heating device 7 is operated, that is, in the process of drying the article A, the temperature (a) rises to a certain temperature with the processing time t. , After that, the temperature is maintained, and then the heating device 7 is stopped and then lowered.
Further, the humidity (b) rises simultaneously with the operation of the heating device 7 of the hot air supply means 3 (humidity rise period W1), and falls again as the processing time t elapses according to the moisture content of the article A (drying). During this period, the inside of the drying chamber 2 is maintained at a very high humidity state before and after the humidity (b) changes from rising to falling (high humidity period W3).

On the other hand, it is known that ozone used in the sterilization and deodorization treatment of the present invention has a strong bactericidal power. However, the bactericidal power of ozone is determined by a decomposition reaction as shown in the following equation (1). Oxygen (O) in the nascent stage is generated by causing a strong oxidation reaction, and this decomposition reaction occurs even at room temperature, but can be further strengthened under high humidity and high temperature conditions. It is.

[0024]

[Equation 1] O ₃ → O ₂ + (O)

Further, under the conditions of high humidity and high temperature, the nascent oxygen (O) generated by the decomposition reaction reacts with moisture as shown in the following formula [Equation 2] to give hydroxyl having a high bactericidal activity. Generates radicals (2OH).

[0026]

## EQU2 ## (O) + H ₂ O → (2OH)

Therefore, in order to maximize the sterilizing effect of ozone, the humidity in the drying chamber 2 is monitored by a humidity detector, and the ozone injected by the ozone injection means 4 is vaporized into the drying chamber 2. High-humidity period W3 in which water is filled
At the optimum concentration.

On the other hand, in the conventional sterilizing / deodorizing / drying apparatus, ozone is vaguely injected, and for example, as shown in FIG. On the other hand, when the humidity in the drying chamber 2 is lowered, that is, when the ozone injection means 4 is operated during the drying period W2, no active ozone decomposition reaction is performed.

In the sterilization and deodorization method of the present invention, as shown in FIG. 9, during the drying process of the article A by the hot air supply means 3, the humidity in the drying chamber 2 is measured by a humidity detector and the ozone is injected. Injection of ozone by the means 4 is started when the humidity in the drying chamber 2 rises to a certain humidity, and continuously or intermittently during the high humidity period W3 while the certain humidity is maintained through the high humidity state. In this way, the ozone is sterilized and deodorized with the optimum concentration of ozone during the high humidity period W3, which is a high temperature and high humidity state.

The effect of the sterilization and deodorization method of the present invention and the conventional sterilization and deodorization method were measured using Staphylococcus aureus as an indicator bacterium, and as shown in the measurement results [Table 1], the sterilization and deodorization of the present invention was performed. It has been found that the method has a very good sterilizing and deodorizing effect.

[0031]

[Table 1]

As described above, according to the present invention, the ozone injection by the ozone injection means 4 is started in a state where the humidity is sufficiently present, and the ozone injection is performed at a high temperature at which the sterilizing effect of ozone is maximized.
By sterilizing and deodorizing with ozone at an optimum concentration in a high humidity period W3 in a high humidity state, a sterilizing effect generated by an ozone decomposition reaction and a hydroxyl radical generation reaction is used to the utmost, and a low concentration of ozone is extremely low. This enables effective sterilization and deodorization in a short time.

In the present invention, the injection of ozone by the ozone injection means 4 is stopped at the end of the high humidity period W3 in the drying chamber 2, so that the unreacted residual ozone in the drying chamber 2 is subjected to a drying treatment. At the end of the process, the gas is completely decomposed, or is forcibly cleaned and exhausted in the gas exhaust portion 3b of the hot air supply means 3, so that adverse effects on the human body can be avoided.

The ozone injecting means 4 of the second embodiment of the present invention includes a pair of electrodes 10a. 1
0b, and the electrode pairs 10a. The entire amount of gas passes through the discharge space 10c between the discharge spaces 10b, and the ozone (O ₃ ) and the nascent oxygen (O) generated in the discharge space 10c are immediately dried through the heating device 7. Since it is sent into the chamber 2, nascent oxygen (O) having a strong bactericidal power can be used very effectively.

The present invention is constructed as described above,
In the process of drying the article after washing by the hot air supply means, the humidity in the drying chamber is monitored by a humidity detector, and the ozone injection by the ozone injection means is started when the humidity in the drying chamber rises to a certain level. At the same time, it is continuously or intermittently continued until a state where a certain humidity is maintained through a high humidity state, and sterilization and deodorization treatment is performed at an optimum ozone concentration at a high temperature and a high humidity state, thereby achieving a low concentration of a low concentration. It realizes sterilization and deodorization treatment with ozone in a very short time, and since the injection of ozone is stopped before the drying treatment of the article is completed, there is no fear that ozone will remain in the drying chamber. This is a revolutionary and extremely significant invention.

[Brief description of the drawings]

FIG. 1 is an explanatory view in which a part of a first embodiment of a sterilization, deodorization and drying apparatus according to a sterilization and deodorization method of the present invention is omitted.

FIG. 2 is an overall schematic diagram of a first embodiment of a sterilization / deodorization / drying apparatus according to the sterilization / deodorization method of the present invention.

FIG. 3 is an enlarged schematic view of a main part of hot air supply means in a first embodiment of a sterilization, deodorization and drying apparatus according to the sterilization and deodorization method of the present invention.

FIG. 4 is an explanatory view in which a part of a second embodiment of the sterilizing, deodorizing and drying apparatus according to the sterilizing and deodorizing method of the present invention is omitted.

FIG. 5 is an overall schematic diagram of a second embodiment of a sterilization, deodorization and drying apparatus according to the sterilization and deodorization method of the present invention.

FIG. 6 is a schematic cross-sectional view of an ozone injection means in a second embodiment of the sterilization / deodorization / drying apparatus according to the sterilization / deodorization method of the present invention.

FIG. 7 is a schematic sectional view of an ozone injection means in a second embodiment of the sterilizing, deodorizing and drying apparatus according to the sterilizing and deodorizing method of the present invention.

FIG. 8 is an explanatory view of an ozone injection means in a second embodiment of the sterilization / deodorization / drying apparatus according to the sterilization / deodorization method of the present invention.

FIG. 9 is an explanatory view of the sterilization and deodorization method of the present invention.

FIG. 10 is an explanatory view showing an example of a sterilization / deodorization method in a conventional sterilization / deodorization / drying apparatus.

[Explanation of symbols]

 A article 1 sterilization deodorizing and drying device 2 drying room 3 hot air supply means 3a gas introduction part 3b gas discharge part 4 ozone injection means 4a ozone generator 4b pumping device 5 filter 6 fan 7 heating device 8 ozone decomposition catalyst 9a inlet 9b supply Vent 9c Discharge port 9d Exhaust port 10a Electrode 10b Electrode 10c Through hole 11 Discharge space W1 Humidity rise period W2 Dry period W3 High humidity period

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-150207 (JP, A) JP-A-63-240865 (JP, A) JP-A-4-64328 (JP, A) JP-A-3-64 164653 (JP, A) JP-A-3-58267 (JP, U) JP-A-2-43996 (JP, U) JP-B 37-17949 (JP, B1) (58) Fields surveyed (Int. Cl. ⁷ , DB name) A61L 2/20 A61L 9/015

Claims (1)

(57) [Claims] 1. A drying chamber for storing articles after washing, a hot air supply means for supplying and exhausting hot air to the drying chamber to perform a drying process, and an ozone injecting means for injecting ozone for sterilization and deodorization. a sterilization deodorization processing method in sterilizing deodorizing drying apparatus having the in the course of drying of the article by the hot air supplying means, the humidity of the drying chamber was monitored by a humidity detector, the injection of ozone by the ozone injection means At the time when the humidity in the drying chamber rises to a certain level, and continuously or intermittently while the constant humidity is maintained through the high humidity state , and the end of the high humidity period in the drying chamber Stop at
The Rukoto was sealed, high temperature, sterilization deodorization method in sterilizing deodorizing drying apparatus for causing sterilized deodorized at optimal concentrations of ozone in a high humidity condition.