JPH09105568A - Ozone ice making equipment - Google Patents

Abstract

(57) [Abstract] [Problem] Toxic NO that can be advantageously applied to sterilization, decolorization, deodorization, etc. during storage and transportation of fruits and vegetables and fresh fish.
Provided is an ozone ice production device capable of easily producing ozone ice not containing x. NOx obtained by supplying air to an ozone generator and a gas containing ozone are brought into contact with water to generate NOx.
After removing the water, the ozone water obtained by absorbing with water is cooled with an ice making machine to make ozone ice. Further, if ozone-containing gas from which NOx has been removed is brought into contact with and absorbed by atomized water atomized by a pulverizing means such as a spray and the resulting ozone water is cooled by an ice-making machine, it contains high-concentration ozone. ,
Moreover, ozone ice containing no NOx can be easily produced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozone ice production apparatus, and more particularly to the field of preservation and transportation of fruits and vegetables and fresh fish, broilers, beer, tanks, juice storage tanks, tableware such as lunch boxes, and food processing. In addition to sterilization, decolorization, deodorization, etc. in various fields such as the food field such as equipment, canned and bottled equipment, fisheries fields such as fish ponds and aquaculture ponds, pool water, water treatment fields such as water supply treatment, etc. The present invention relates to an ozone ice production apparatus that can be advantageously applied to drifting and can easily produce NOx-free ozone ice.

[0002]

BACKGROUND OF THE INVENTION Since ozone has a strong bactericidal action and self-decomposes into oxygen, it has become widely used as a substitute for other bactericides such as chlorine-based bactericides such as sodium hypochlorite. There is. However, ozone is a gas,
Since it is inconvenient to handle it, it has come to be used as ozone ice. On the other hand, an ice filling method is widely used in which food is preserved by keeping the food at a low temperature to reduce the propagation of spoilage bacteria and the like adhering to the food, but this ice filling method has a short shelf life. There's a problem. Therefore, in the food field, ice itself is allowed to contain ozone, the use of cold heat and directly when it is in contact with food, when it is not in contact with food, melted water or ozone generated by melting acts on food, Taking advantage of the fact that the reproduction of spoilage bacteria and the like can be reduced over a long period of time, attempts are being made to store and transport fruits and vegetables and fresh fish.

However, nitrogen oxides (NOx) are mixed in ozone generated from an ozone generator using air as a raw material, and ozone produced by absorbing ozone containing this NOx into water is cooled. Since ozone ice contains NOx, it has a problem of toxicity, and there is also a problem that fresh fish such as tuna is discolored by NOx generated when the ozone ice containing NOx is melted. On the other hand, there is a conventional technology for producing ozone that does not contain NOx by using an oxygen production device (SPA) or an oxygen cylinder, but it is necessary to use an expensive device. It has the drawbacks of risk of ignition and running costs (replenishment and replacement of oxygen gas).

[0004]

The object of the present invention is to facilitate the use of NOx-free ozone ice which can be advantageously applied to sterilization, decolorization, deodorization, etc. in various fields such as preservation and transportation of fruits and vegetables and fresh fish. Another object of the present invention is to provide an ozone ice manufacturing device that can be manufactured at any time.

[0005]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that when a gas containing NOx and ozone is brought into contact with water, NOx can be substantially removed and NOx can be substantially removed. It was found that ozone water substantially free of the target NOx can be easily produced by producing ozone water using the ozone that has been removed by removing the ozone water and cooling the ozone water with an ice making machine. Completed

The invention of claim 1 of the present invention is obtained by contacting a gas containing NOx and ozone obtained by supplying air to an ozone generator with water to remove NOx, and then absorbing ozone into water. It is an ozone ice production device characterized in that ozone water is cooled by an ice making machine to produce ozone ice.

According to the second aspect of the present invention, a gas containing NOx and ozone obtained by supplying air to an ozone generator is brought into contact with water to remove NOx, and then atomized into fine particles by a pulverizing means. The ozone ice production apparatus is characterized in that ozone water obtained by contacting with and absorbing absorbed water is cooled by an ice making machine to produce ozone ice.

The invention according to claim 3 of the present invention is characterized in that, in the ozone ice producing apparatus according to claim 1 or 2, an auger type ice making machine is used as the ice making machine.

According to a fourth aspect of the present invention, in the ozone ice manufacturing apparatus according to the first to third aspects, at least one of an ozone generator, a NOx removing apparatus and an ozone water manufacturing apparatus is built in the ice making machine. It is characterized by

A fifth aspect of the present invention is an ozone ice producing apparatus characterized in that the ozone ice according to the first or second aspect is stored in a freezer.

[0011]

[Operation] N generated from the ozone generator using air as a raw material
NOx is generated when a gas containing Ox and ozone is brought into contact with water.
Can be easily removed. 100m water of NOx at 0 ℃
Examples of solubility l, when the N ₂ O 130.
5 ml, 7.3 ml for NO. In the case of NO ₂ , it reacts immediately with water to produce nitric acid (3NO ₂ + H ₂ O
→ 2HNO ₃ + NO). At this time, the NO that is secondarily generated is oxidized to NO ₂ and eventually all becomes nitric acid. In this way, it dissolves in water or decomposes on contact with water
If ozone that is substantially free of Ox is absorbed in water to make ozone water and this ozone water is cooled by an ice making machine to make ozone ice, it is possible to easily produce ozone ice that does not substantially contain the target NOx. .

When a gas containing ozone from which NOx is substantially removed is brought into contact with water to absorb ozone into the water to make ozone water, the water is atomized into fine particles using a pulverizing means such as a spray. Ozone water containing a high concentration of ozone and substantially free of NOx can be obtained by contacting and absorbing the resulting water. Ozone water containing even higher concentrations of ozone can be obtained by repeating the operation of contacting and absorbing a gas containing ozone from which NOx has been removed from atomized water that has been atomized into water, and repeating the operation twice or more. By cooling such ozone water with an ice making machine to produce ozone ice, ozone ice containing ozone at a desired high concentration and substantially not containing NOx can be easily produced.

In the present invention, when ozone water containing NOx is cooled by using an auger type ice making machine as an ice making machine to make ozone ice, the freezing cylinder of the auger type ice making machine and the compression part of the ice shaving piece are kept at a low temperature. Since ozone decomposition is suppressed and volatilization is also suppressed, it is possible to easily and continuously produce ozone ice having a high ozone concentration that does not contain NOx. It is preferable that ozone that does not contain NOx is absorbed in water at a temperature as low as possible to produce ozone water, and that this ozone water is supplied to the ice-making machine at a temperature as low as possible because decomposition and volatilization of ozone are suppressed.

In the present invention, the ozone generator, the NOx removing device, the ozone water producing device and the like may be arranged outside the ice making machine or may be built in the ice making machine. If at least one of the ozone generator, the NOx removal device and the ozone water production device is built in the ice making machine, the device becomes small and simple, ozone generation and ozone water production become easy, and the target NOx is not included. Ozone ice can be easily manufactured.

In the present invention, the ozone ice produced is
For example, if it is stored in a freezer kept at about -20 ° C or at a lower temperature than that, reduction of ozone contained in ozone ice can be suppressed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the ozone ice production process by the ozone ice production apparatus of the present invention. Ozone containing gaseous NOx obtained by supplying air to the ozone generator 21 is sent to the NOx removal device 22 to be sufficiently brought into contact with water so that N
Ox is substantially removed. This ozone is supplied to the mixer (ozone water production apparatus) 24, mixed with the water 23 supplied to the mixer 24, and the ozone is absorbed by the water to produce ozone water 25 containing no NOx. This ozone water 25 is used in an ice machine 26
To produce ozone ice 27a containing no NOx. The method and conditions for contacting the ozone containing the gaseous NOx with water in the NOx removal device 22 are not particularly limited. It is preferable to select and use a method and conditions that allow sufficient contact with water to sufficiently remove NOx. As shown by the one-dot chain line in FIG. 1, the ozone generator 21,
It is preferable that the ozone water producing apparatus 1a has a built-in ice making machine 26 including the ozone water producing apparatus including the NOx removing device 22 and the mixer 24. However, the ozone generator 21, NOx
The ozone water producing device including the removing device 22 and the mixer 24 may be provided outside the ice making machine 26.

FIG. 2 shows an example of a process for producing ozone ice by another ozone ice producing apparatus of the present invention. The ozone containing the gaseous NOx obtained by supplying air to the ozone generator 21 is converted into N
Send it to the Ox removal device 22 and make sufficient contact with water to NOx
Are substantially removed. This ozone is pressure-fed and supplied to the mixer (ozone water production apparatus) 24a using a pressure-fed means 30 such as a pump. On the other hand, the water 23 is fed under pressure by a pump 2
A water amount adjusting device (including a water amount adjusting valve and a flow meter) by 8 2
9, it is pressure-fed and supplied to the mixer 24a to be atomized by a crushing means such as a spray (not shown) and atomized to be mixed with ozone from which the NOx has been removed in the mixer 24a so that the ozone is absorbed by water. Ozone water containing no NOx 25
make. The ozone water 25 is sent to the ice making machine 26 to be cooled to produce ozone ice 27b containing a high concentration of ozone and containing NOx. As described above, a method of contacting ozone containing gaseous NOx with water in the NOx removal device 22,
The conditions are not particularly limited, and NO should be obtained by sufficiently contacting with water.
It is preferable to select and use a method and conditions that can sufficiently remove x. The ozone generator 21, the NOx removing device 22, the pressure feeding means 28 and 30, the water amount adjusting device 29, the ozone water producing device including the mixer 24, etc. are built in the ice making machine 26 as shown by being surrounded by a dashed line in FIG. It is preferable to use the ozone water producing apparatus 1b. However, these may be arranged outside the ice making machine 26.

The method of producing ozone water by sufficiently mixing ozone and water in the ozone water producing apparatus is generally a cylinder method, an ejector method, a mixing method, etc., but any method may be used without any particular limitation.

FIG. 3 shows an example of a preferable ozone water producing apparatus. The spray 23 of the crushing means arranged on the side surface and the bottom of the mixing chamber 31 passes the water 23 through a water amount adjusting device (including a water amount adjusting valve and a flow meter) 29 by a pumping means 28 such as a pump.
The particles 2 and 32 are sprayed into the mixing chamber 31 to form a mist of fine particles, and at the same time, ozone that does not substantially contain NOx is pressure-fed from the upper portion of the mixing chamber 31 using a pressure-feeding means 30 such as a pump to introduce the ozone. It is mixed with finely atomized water in a high density and in a multi-faceted manner so that ozone is absorbed in water droplets and dropped to the bottom, and ozone is contained at a high concentration from the outlet 33, and N
Ozone water substantially free of Ox can be obtained.
If ozone water is further absorbed by ozone water generated by connecting a plurality of such mixing chambers 31, ozone water having a higher concentration can be obtained.

FIG. 4 shows another example of a preferable ozone water producing apparatus (for example, an example in which the one described in Japanese Patent Application No. 7-154133 is diverted). Reference numeral 41 denotes an ozone water production container, which is immersed in a cooling water tank 42 and kept cool. Ozone gas 43 containing substantially no NOx is pressurized and supplied to the ozone water producing container 41 from an inlet port 48 provided at an upper portion of the container 41 through an introducing pipe line 44 and a cistern 45 which stores water. Is supplied under pressure from a spray 49 provided on the upper portion of the container 41 via a pipe line 47 cooled by a water supply pump 46. A mixing container 51 is provided below the ozone gas inlet 48 and the spray 49 at a distance from the inner wall of the container 41. The sprayed water becomes fine water droplets to absorb the ozone gas, and at the same time, in the mixing container 51. It collides with the water that has stayed in
A high concentration of ozone water is generated by being mixed.

The generated ozone water passes under a partition plate (not shown) having one end fixed to the inner wall of the container 41 and the other end extending to the vicinity of the bottom of the mixing container 51, and then the partition plate and the mixing container 51. It passes between the vessel wall and the vessel wall, overflows the vessel wall and flows down between the inner wall of the vessel 41 and the vessel wall to the bottom of the vessel 41. 50 is a water level control sensor. The container 41
Ozone water generated in the pipe 52, the flow rate control device 5
It is cooled again by the cooling coil 54 through 3 and supplied to an ice making machine (not shown).

When ozone water is produced by using the ozone water producing apparatus, if acidic water obtained by electrolyzing water is used as water for absorbing ozone, the solubility of ozone is high and the ozone content is high. It is preferable because ozone water containing a high concentration of ozone can be easily produced because it is less decomposed. As a device for electrolyzing water to obtain acidic water, a known device can be used and is not particularly limited. As an example of such a commercially available device, for example, an alkaline ionized water conditioner [trade name, H
L-AL23 (H), manufactured by Sanyo Electric Co., Ltd.].

In the present invention, an ozone generator and NOx are used.
It is also possible to use an ozone water producing device including a removing device and a mixer by connecting it to an auger type ice making machine, but it is preferable to use at least one of these as built in the auger type ice making machine as described above. .

The structure of the ice-making portion of the conventional auger type ice-making machine is generally disclosed in Japanese Utility Model Laid-Open No. 58-85167 and Japanese Patent Publication No.
This is as shown in Japanese Patent Publication No. 196330. That is, a freezing cylinder in which an auger for shaving ice that grows on the inner wall of the freezing cylinder is rotatably inserted, and an ice compression path for compressing the shaving ice transferred upward by the auger are provided in the periphery, An upper bearing fitted and fixed to the upper opening of the refrigerating cylinder and an upper outer peripheral surface of the refrigerating cylinder are coupled and fixed to receive an ice piece that breaks out from the end surface of the upper bearing inside, and the ice It consists of an ice shooter that has an impeller that sends pieces to the ice bin.

FIG. 5 is a front sectional view of an ozone ice making apparatus of the present invention using an auger type ice making machine. In FIG.
An ice storage 1 is provided on the left side, and an ice making unit 2 and a unit chamber 3 for accommodating a refrigeration system mechanism such as a compressor (not shown) together are provided on the right side. The ice making unit 2 and the freezing mechanism are so-called mechanical units. The machine room unit in the unit room 3 has its unit base 4 drawn out from the unit room 3 forward by the guide rails 5 and 5 at both ends, so that the ice making unit 2 and the refrigeration system mechanism can be easily repaired and inspected. I am letting you. Mounted on the unit base 4 are a motor 6 which is a power source of the auger described below, a speed reducer 7 which transmits deceleration power to the power source, and a cylindrical cooler 8. The ozone ice production apparatus of the present invention is equipped with a set of an ozone generator, a NOx removal device, an ozone water production device, etc., which are not shown, and ozone containing NOx produced by this ozone generator is NOx removed by the NOx removal device. Is substantially removed, and the ozone water produced by sending this ozone to the ozone water producing apparatus is supplied to the lower part of the cooler 8 as shown in FIG.

FIG. 6 is an enlarged sectional view showing a main part of the ozone ice manufacturing apparatus shown in FIG. A refrigerating cylinder 9 is fixedly installed inside the cooler 8, and the refrigerating cylinder 9 is connected to an evaporator 61 of a refrigerating system mechanism provided on the outer wall of the refrigerating cylinder 9 with a refrigerant inlet 60.
It is cooled by the cold heat due to the evaporation of the refrigerant introduced from. Reference numeral 62 is a refrigerant outlet, and 63 is a heat insulating material. The ozone water supplied into the freezing cylinder 9 from the ozone water inlet 64 at the bottom of the freezing cylinder 9 is cooled, and an ice layer containing ozone grows on the inner wall of the freezing cylinder 9. Reference numeral 65 is a drainage port.
An auger 10 is rotatably inserted in the freezing cylinder 9, and an upper bearing 11 axially supports the upper portion of the auger 10 and is fixedly installed in an upper opening of the freezing cylinder 9. When the auger 10 provided in the freezing cylinder 9 rotates, the ice layer containing ozone that grows on the inner wall of the freezing cylinder 9 is scraped off, and the ice chips are frozen into the freezing cylinder 9.
The upper bearing 11 is provided on the upper part of the ice compression passage 12.

The upper bearing 11 supports the upper part of the rotary shaft 10a of the auger 10 and has a plurality of concave grooves provided around the upper shaft as an ice compression path 12. Ice compression path 1
The compressed ice mass containing ozone, which is compressed in 2 and becomes a rod shape, is time-divided from the ice compression path 12 and becomes ice pieces (ozone ice) i containing fine ozone.

As shown in FIG. 5, these ice pieces i are guided into an ice shooter 13 which is waterproofly connected to the freezing cylinder 9, and when the ice pieces i accumulate, the upper end of the rotating shaft 10a of the auger 10 is brought into contact. It is introduced into the ice storage 1 via the ice discharge cylinder 16 by the impeller 15 of the agitator 14 coupled to the. Reference numeral 17 denotes an ice storage sensor provided in the ice storage 1, and when the ice amount exceeds a predetermined amount, it detects it and makes the ice making unit 2 inoperative. Reference numeral 18 is a limit sensor for safety protection which operates to stop the ice making operation of the ice making unit 2 when the ice storage sensor 17 does not operate normally. The ice discharge cylinder 16 is diagonally joined to and separated from the ice outlet portion 13a of the ice shooter 13.

When the ice shooter 13 is fixed to the outer peripheral body of the freezing cylinder 9, if the seal between the two 13 and 9 is not completed completely, the water melted in the ice shooter 13 will leak out, so that the seal is made. The ice shooter 13 is attached and fixed to the freezing cylinder 9 for completeness and easy work.

The ice shooter 13 is preferably made of synthetic resin such as polyethylene rather than rubber. The freezing cylinder 9 is made of stainless steel. The rubber bush 20 seals the ice shooter 13 and the freezing cylinder 9. In this way, both the hard parts 9 and 13
Water is sealed by interposing a rubber bush 20 between them. The rubber bush 20 has a plurality of projections formed in an annular shape on the inner surface side and the outer surface side thereof, and the peaks of the rubber bush 20 are crushed to act as a seal. This rubber bush 20 is fitted on the outer peripheral surface of the freezing cylinder 9,
The ice shooter 13 is fitted in the outside.

The temperature of the ice storage 1 is -20 ° C.
If the freezer is kept at a low temperature of about a degree or less, the decrease of ozone contained in the ice pieces (ozone ice) i introduced into the freezer can be suppressed. Table 1 shows the relationship between the temperature inside the refrigerator and the half-life of ozone of ice pieces (ozone ice) i.

[0032]

[Table 1]

[0033]

As described above, according to the present invention, a gas containing NOx and ozone, which is obtained by supplying air to an ozone generator, is brought into contact with water without using expensive oxygen. Ozone from which NOx has been removed can be obtained, and ozone is absorbed into water to produce ozone water that does not contain NOx. By cooling this ozone water with an ice making machine, ozone ice that does not contain NOx can be easily produced. You can

Further, the gas containing ozone, which is substantially free of NOx, obtained as described above is brought into contact with water atomized into fine particles by a pulverizing means such as a spray, whereby a high concentration of ozone is obtained. It is possible to easily produce ozone ice containing a high concentration of ozone and containing no NOx by producing ozone water containing NOx and containing NOx and cooling the ozone water with an ice making machine.

As an ice-making machine, it is installed in the kitchen room of restaurants, cafes, hotels, restaurants, snacks, etc. and commercial facilities, and is used mainly for commercial purposes to produce ice to be used for cooling juice such as juice and cola. If the auger type ice maker is used, the freezing cylinder of the auger type ice maker and the compression part of the ice shaving pieces are at a low temperature, so that the decomposition of ozone is suppressed and the volatilization is also suppressed, so that a high concentration of ozone is contained,
In addition, ozone ice containing no NOx can be easily and continuously produced.

In the present invention, if at least one of the ozone generator, the NOx removing device and the ozone water producing device is built in the ice making machine, the device becomes simple as a whole, and the ozone generation and the ozone water production are facilitated. Therefore, ozone ice containing no NOx can be efficiently and easily manufactured.

If the produced ozone ice is stored in a freezer, the decrease of ozone contained in the ozone ice can be suppressed.

Ozone ice containing no NOx is non-toxic,
It can be advantageously applied to sterilization, decolorization, deodorization, etc. during storage and transportation of fruits and vegetables and fresh fish.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an example of a process for producing ozone ice according to the present invention.

FIG. 2 is an explanatory view of another example of a process for producing ozone ice according to the present invention.

FIG. 3 is an explanatory diagram showing an example of an ozone water producing apparatus.

FIG. 4 is an explanatory diagram showing another example of the ozone water producing apparatus.

FIG. 5 is a front sectional view of an ozone water producing apparatus showing an example of the present invention.

FIG. 6 is an enlarged cross-sectional view showing a main part of the ozone water producing apparatus of FIG.

[Explanation of symbols]

 1 Ice Storage 2 Ice Making Unit 3 Unit Room 4 Unit Base 5 Guide Rail 6 Motor 7 Reducer 8 Cooler 9 Refrigerating Cylinder 10 Auger 11 Upper Bearing 12 Ice Compression Path 13 Ice Shooter 14 Agitator 15 Impeller 16 Ice Ejecting Tube 17 Ice Storage Sensor 18 Limit sensor 20 Rubber bush 21 Ozone generator 22 NOx removal device 23 Water 24, 24a Mixer 25 Ozone water 26 Ice machine 27a, 27b Ozone ice (ice piece) 60 Refrigerant inlet 61 Evaporator 62 Refrigerant outlet 63 Insulating material 64 Ozone water Inlet 65 Drainage port

Claims (5)

[Claims] 1. NOx obtained by supplying air to an ozone generator and a gas containing ozone are brought into contact with water to NOx.
An ozone ice production apparatus, wherein ozone water is obtained by absorbing ozone into water and then cooled with an ice making machine to produce ozone ice. 2. NOx obtained by supplying air to an ozone generator and a gas containing ozone are brought into contact with water to NOx.
After removing the water, ozone water produced by contacting and absorbing finely atomized water atomized by a pulverizing means and cooling it with an ice making machine to make ozone ice. 3. The ozone ice making apparatus according to claim 1, wherein an auger type ice making machine is used as the ice making machine. 4. The ozone ice manufacturing device according to claim 1, wherein at least one of an ozone generator, a NOx removing device, and an ozone water manufacturing device is built in the ice making machine. 5. An ozone ice producing apparatus, wherein the ozone ice according to claim 1 or 2 is stored in a freezer.