JPH0717318A - Van type vehicle with deodorizing function - Google Patents

Abstract

PURPOSE:To prevent deterioration of food and to deodorize and sterilize effectively by aerating water with ozone, which is generated by an ozone generating means, by an aerating means so that the water is turned into ozone water and spreading the ozone water inside a loading chamber by a spreading means. CONSTITUTION:Aeration in water is carried out by supplying ozone generated in an ozone generating part, 13 to an aeration tank 28. The aeration is carried out by supplying an ozone gas to a porous air diffusing material (zeolite, for example) 29 and generating fine foam of ozone, and then, ozone water is generated. This ozone water is passed in a fine tube 32 by a pump 31 to be sent to a discharge port 33 inside a loading chamber. The discharge ports 33 are arranged on the ceiling and the wall face upper part excepting a door, and spray the ozone water like a sprinkler or an atomizer. In this case, only the generation of ozone water is carried out during transportation, and ozone water is sprayed inside the loading chamber 14 after unloading is finished at the destination. Subsequently, a water tank arranged in the aeration tank 28 is switched so as to spray water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention is for transporting foodstuffs,
In addition, the present invention relates to a van-type vehicle having a function of eliminating odors in a loading storage that stores transported goods.

[0002]

2. Description of the Related Art Various odors remain in a loading compartment of a van type vehicle for transporting fresh fish, meat, vegetables and the like, depending on objects to be transported. Ideally, a transport vehicle for fresh fish, a transport vehicle for meat, etc. should be provided, but in reality, they are mixed in most cases in order to improve transportation efficiency. Therefore, the incense is a problem. In particular, when vegetables and fruits are transported after transporting fresh fish, the odor of the fish is transferred to the vegetables and fruits, which significantly reduces the commercial value. In order to remove various odors remaining in the loading cabinet by such a loaded object, it is hardly effective to wash the inside of the loading cabinet with water after unloading.

Therefore, various deodorizing methods have been tried. For example, the installation of an adsorbent using activated carbon is one of the main ones, but since the effect period is limited, the work of exchanging the adsorbent must be done frequently. In addition, some methods have tried deodorizing by spraying vanilla essence or alcohol, but it is troublesome to spray and the effect is doubtful.

Therefore, in recent years, focusing on the deodorizing action of ozone,
A van-type vehicle that has the function of generating ozone gas during transportation and deodorizing the inside of the loading warehouse is in operation. FIG. 5 shows an example in which an ozone deodorizing device is installed in a conventional refrigerated van type vehicle. An operation unit 12 of the ozone deodorizer is provided in the cab 11.
The ozone generation unit 13 is separated from the operation unit 12 and the loading storage 14
It is mounted on the underside of. In the operation section 12, the ozone concentration can be freely controlled according to the type (fish, meat, vegetables, etc.) and amount of cargo. The ozone outlet 15 is attached to the ceiling of the operator's cab 11 side in the loading compartment 14, and the outlet 15 is connected to the ozone generator 13 by a pipe 16. In order to cool the inside of the loading compartment 14, a condenser 17 that condenses the cool air and an evaporator 18 that vaporizes and disperses the condensed cool air are provided. The parts such as the blowout port 15 and the pipe 16 that come into contact with ozone gas are made of stainless steel (SUS304).

Ozone is generated during transportation and is discharged into the loading box 14, and is controlled by a timer (not shown) in the operation unit 12 so that the ozone concentration becomes 0 before reaching the destination. Deodorize. As an operation example, in the case of transporting fish from Hachinohe to Tokyo and transporting vegetables from Tokyo to Hachinohe, operation was performed for 3 hours and 5 hours at an outlet ozone concentration of about 50 ppm. When the operation time was 3 hours, the fish and vegetable odors in the refrigerator were hardly felt, and the ozone odor was not felt, but when the operation time was 5 hours, fish and vegetable odors were felt. There was no report, but there was a report that an ozone odor was felt. The strong oxidizing action of ozone also sterilizes the inside of the loading cabinet at the same time to kill bacteria such as E. coli.

[0006]

As described above, deodorization in the loading compartment of van type vehicles by ozone gas has become widespread. Ozone has a strong deodorizing effect due to its strong oxidizing power and stronger oxidizing power due to the nascent oxygen generated in the decomposition reaction, but the conventional method is to deodorize by filling ozone gas during transportation. However, ozone could damage the cargo depending on what was carried. Especially in the case of seafood and meat, the surface is often altered.

Since the odor of seafood and meat is strong, it is necessary to increase the ozone gas concentration in order to completely deodorize it, but if the concentration is increased, the product will be damaged, and deodorization by ozone gas will leave a big problem. It was In addition, sterilization is performed at the same time as deodorization, but there are problems such as alteration of fermentation due to indiscriminate sterilization by ozone gas, while there are beneficial bacteria (such as yeast) in food products. Was pointed out.

An object of the present invention is to solve the above-mentioned problems and to provide a van type vehicle with an ozone deodorizing function that enables effective deodorization and sterilization without damaging a transported object.

[0009]

According to the present invention, ozone generating means is provided, and ozone generated by the ozone generating means is aerated to water by aeration means to produce ozone water.
The ozone water can be diffused into the loading compartment by the diffusion means.

[0010]

According to the present invention, after the baggage in the loading compartment is taken out, the deodorizing and sterilizing operations are carried out in the loading compartment by diffusing the ozone water in the liquid state or in the form of spray by the diffusion means.

[0011]

EXAMPLES Specific examples of the present invention will be described.
FIG. 1 shows an embodiment in which the present invention is applied to a refrigerated van type vehicle, and the portions corresponding to those in FIG. In FIG. 1, an ozone generating power source 21 is provided in the driver's cab 11 and produces high voltage (several kV) and high frequency (several hundred Hz) AC power for ozone generation from a van type vehicle battery (DC 12 / 24V). . In this embodiment, ozone is generated by a silent discharge method, and the source gas is air. The ozone generating unit 13 is composed of an ozone generating electrode. For example, as shown in FIG. 2A, the output of the ozone generating power source 21 is applied between the counter electrodes 22 and 23, and a dielectric layer 24 such as glass or ceramic is formed on the surface of one electrode 22 on the other electrode side.
The ozone is efficiently generated by the discharge between the electrodes 22 and 23. Alternatively, as shown in FIG. 2B, ozone generation AC power is applied between the discharge electrode 26 and the induction electrode 27 on both sides of the dielectric substrate 25 to generate ozone by creeping discharge. The ozone generated by the ozone generator 13 is
It is supplied to the aeration tank 28 and aerated underwater. For aeration, ozone gas is supplied to a porous air diffuser (for example, zeolite) 29 to generate fine bubbles of ozone and generate ozone water. The generated ozone water passes through the pipe 32 by the pump 31 and is sent to the plurality of discharge ports 33 in the loading compartment. The discharge port 33 is installed in the upper part of the wall surface other than the ceiling and the door in the loading storage 14, and the ozone water is sprayed in a sprinkler shape or a spray shape.

In this embodiment, only ozone water is produced during the transportation, and no spraying is carried out. After reaching the destination and unloading the cargo, the interior of the loading container 14 is sprayed with ozone water.
The spraying time varies depending on the type and amount of cargo, but can be set by the operation unit 12. Further, the capacity of the ozone water stored in the aeration tank 28 is ensured to be sufficient so as not to be exhausted within the spraying time. When the ozone water spray is completed, the water tank (not shown) attached to the aeration tank 28 is automatically switched to spray water.

FIG. 3 shows another embodiment. In FIG. 3, the ozone water generated in the aeration tank 28 is supplied to the ozone water supply connector 34 via the pump 31 and the pipe 32. The pump 31 is stopped during transportation. After arriving at the destination and unloading the cargo, the deodorizing nozzle 35 shown in FIGS. 4A and 4B is connected to the ozone supply connector 34 through the flexible tube (flexible tube) 36 to load ozone water. Deodorization is performed by spraying the inside of the refrigerator 14.
A hand switch 37 is provided at the position of the nozzle 35. The connector 38 is connected to the connector 34. Figure 4
A spray tip 39 is provided at B. FIG. 4A disperses in a shower shape, and FIG. 4B disperses in a fog shape. These may be selectively used according to the application, or may be a combined type. The ozone water supply connector 34 and the connector 3
The reference numeral 8 not only connects a pipe of ozone water, but also has a built-in signal line connector for turning on / off the pump 31 with the hand switch 37. Also in the case of this embodiment, when the ozone deodorization is completed, switching to water washing is performed as in the case of the previous embodiment.

The odor such as fish odor and meat odor is a mixture of various components. For example, in the case of fish odor, volatile bases such as trimethylamine and dimethylamine, volatile salts such as formic acid, acetic acid and propionic acid, volatile carbonyl compounds such as formaldehyde, acetaldehyde and acetone, and volatile compounds such as hydrogen sulfide. A wide variety of compounds including sulfur-containing compounds and alcohol. Of these, it is said that volatile bases are associated with fishy odor, and volatile acids are associated with acid irritating odor and acid deterioration odor.

The deodorizing effect of ozone on these malodorous substances is masking, not oxidation. For example, methane is decomposed by the following reaction. CH ₄ + O ₃ → CO ₂ + CO + H ₂ O + (trace amount of formic acid, methanol) Further, hydrogen sulfide derived from proteins undergoes the following decomposition reaction. H ₂ S + O _3- > S + H ₂ O + O ₂ (major reaction)-> SO ₂ + H ₂ O (minor reaction) Further, the C = C double bond is generally most reactive to ozone. Furthermore, amines, selenium compounds, and compounds that react nucleophilically such as C = N double bonds are considered to be close to the case of C = C double bonds. The peroxide generated by ozone becomes hydroxy peroxide in an aqueous solution. Intermediates such as dimerization, polymerization and aldehydes and ketones are easily decomposed into aldehydes and carboxylic acids in general. In general, deodorization by ozone oxidation causes odor discomfort and a decrease in odor intensity as a whole due to the addition of ozone, which easily oxidizes and decomposes and decomposes easily decomposed components.

Now, the bactericidal action of bacteria by ozone is due to the direct destructive action on the cytoplasm such as its cell wall.
The bacteria most sensitive to ozone are Gram-negative bacteria, followed by Gram-positive, non-spore-forming bacteria, with spore-forming bacteria being the most resistant. For example, the ozone concentration that kills 99% of Escherichia coli is 0.001 mg / l, and that of Streptococcus faecalis is 0.
High concentrations of ozone are required, such as 005 mg / l, 0.05 mg / l for Mycobacterium tuberculosis, and 0.1 mg / l for giant spores. Furthermore, an ozone concentration of 0.3 mg / l is required for Entamoeba histolytica, which is a kind of pathogenic protozoa. In the case of this embodiment, the ozone concentration of the ozone water is 0.1 to 0.
The target is 5 mg / l, and this concentration has a sufficient effect on deodorization.

With respect to the material of the portion that comes into contact with ozone, stainless steel, copper, chromium, etc. do not change with respect to the metal. In addition, an oxide film is formed on iron, zinc, aluminum, and brass, but since it does not change,
Metal parts (aluminum, stainless steel,
Copper, brass, etc.) is not a problem. Further, since it is said that the resin such as vinyl chloride is not modified, there is no problem with the resin portion in the loading compartment 14. Furthermore, regarding rubber,
Butyl rubber, chloroprene rubber, nitrile rubber, and natural rubber are not suitable because they deteriorate, so it is safe to use silicone rubber, viton, or vinyl chloride rubber for the packing.

A series of deodorization in the loading cabinet by ozone water is safe because the loading cabinet is not closed but the door is opened and the work is performed in the open atmosphere.

[0019]

As described above, according to the present invention, since the ozone water is diffused after the cargo is unloaded, the deterioration of the food due to ozone gas, which has been a problem so far, can be avoided. Also, from the viewpoint of safety, ozone gas does not remain in the loading compartment, and a safe environment can be provided to the worker.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of a van-type vehicle (cooling vehicle) according to the present invention.

FIG. 2 shows an electrode structure of an ozone generator 13 in FIG. 1, where A is a plate electrode and B is a creeping electrode.

FIG. 3 is a configuration diagram showing a second embodiment of a van-type vehicle (cooling vehicle) according to the present invention.

FIG. 4 is a view showing an adapter for deodorizing ozone water used in the second embodiment.

FIG. 5 is a configuration diagram showing a conventional van-type vehicle (cold vehicle) having a deodorizing function by ozone gas.

Claims (1)

[Claims] 1. A van-type vehicle for transporting foods and the like, wherein ozone generating means, aeration means for aeration of ozone generated by the ozone generating means to ozone water, and ozone water are loaded. A van-type vehicle with a deodorizing function, which is provided with a diffusion means for diffusing inside the refrigerator.