JPH0663678B2 - Saltwater ice making equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to an apparatus for producing salt water ice used for cooling fresh seafood to maintain its freshness.

2. Description of the Related Art Conventionally, fresh water ice is generally used as ice for keeping freshness during transportation and standby of fresh seafood. However, the epidermis of seafood moves water in and out according to the pressure balance between the inside and outside according to the principle of osmotic pressure. It is known that this promotes chemical changes and rapidly reduces freshness.

Therefore, in order to overcome this problem, a plastic film is interposed between freshwater ice and seafood, salt is sprinkled on the seafood, and seawater is sprayed on the seafood. There is.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the conventional means as described above, the freshness retention is incomplete, and the work is extremely troublesome, and a lot of manpower is required.

Therefore, various attempts have been made in the past for the production of salt water ice, but in the conventional ice making machine, due to the difference in freezing point temperature and specific gravity between fresh water and salt water, corrosion of the ice making machine by salt water, etc. It was extremely difficult to obtain salt water ice.

Therefore, an object of the present invention is to provide an apparatus for producing salt water ice, which can easily obtain high quality salt water ice that can be used as it is for keeping freshness of fresh seafood.

Means for Solving the Problems In order to achieve the above object, the present invention is an ice making machine for producing flaky or granular fresh water ice from fresh water, and is capable of producing salt water of any concentration, and the produced salt water is A salt water producing device capable of sending out at an arbitrary flow rate, a device for adding salt water sent from the salt water producing device to the fresh water ice produced by the ice making machine, and the fresh water ice and the salt water under a supercooled atmosphere Agitating and crushing the salt water ice to the maximum extent possible by stirring and mixing, a press molding device for achieving and shaping a uniform distribution of the salt content of the salt water ice from this agitating ice machine, and the press molded salt water ice And an ice storage for storing.

Action According to such a configuration, the salt water producing device produces salt water having an arbitrary concentration and sends the salt water at an arbitrary flow rate. This salt water is added to the fresh water ice from the ice machine,
It is sent to a stirring freezer. In this stirring ice machine, fresh water ice and salt water are agitated and mixed in a supercooled atmosphere, so that the outermost surface of the fresh water ice cube in the center portion is formed into a flake shape or a salt layer formed on the outside of the fresh water ice cube. Granular brine ice is obtained.

However, the flaky or granular salt water ice thus obtained is not uniform in shape, and salt does not easily penetrate into the fresh water ice. Therefore, the grain size of the ice is made as small as possible by press-molding this salt water ice, and the grain boundary is coated with salt crystals. By doing so, salt and fresh water ice are uniformly mixed, and molded salt water ice is obtained. The obtained salt water ice is sent to the ice storage and stored.

By adjusting the concentration of salt water produced by the salt water production device and the flow rate of the salt water delivered, salt water ice having an arbitrary salt concentration can be obtained.

Embodiment 1 In FIG. 1, reference numeral 1 is a sterilization activation device, which blows a large amount of ozonized air into raw water composed of fresh water such as ground water and tap water supplied from a raw water inlet 2 to supply this raw water. It is activated and temporarily stored. If the quality of the raw water is good and the sterilization activation treatment is not required, the device 1 can be omitted and only a water storage tank or the like may be provided instead.

The water supply passage 3 from the sterilization activation device 1 is branched into two, one of which is led to the salt water producing device 4 and the other of which is led to the ice making machine 5.

The salt water production device 4 has a salt water tank 6, and the salt water tank 6 is provided with a salt supply port 7 for supplying salt to the raw water from the sterilization activation device 1. Further, a stirrer 8 is provided inside the salt water tank 6 so that raw water and salt can be stirred to produce homogeneous salt water. On the downstream side of the salt water tank 6, a salt water metering pump 9 that sends out the salt water in the salt water tank 6 at a predetermined flow rate and with the flow rate adjustable.
Is provided.

By operating the refrigerator 10, the ice maker 5 can produce flaky or granular fresh water ice from the raw water from the sterilization activation device 1. A spray unit 11 is provided in the vicinity of the ice making machine 5, and the spray unit 11 is provided with a salt water spray nozzle 12 capable of spraying salt water from the salt water metering pump 9. Fresh water ice produced by the ice making machine 5 by this salt water spray nozzle 12.
13 is sprayed with salt water 14.

The spray port 11 is connected to the supply port 16 of the stirring icing machine 15. This agitating ice machine 15 has a cooling jacket 17 on its outer surface.
And is cooled by the brine passing through the inside of the cooling jacket 17. An ethylene glycol solution or the like is used as the brine. The cooling jacket 17 includes a cooling unit 18 and a brine tack for cooling the brine.
19 and the brine pump 20 are connected. Stirring ice machine
15 is composed of a screw mixer, the fresh water ice and salt water supplied from the spraying section 11 are stirred under a supercooled atmosphere, these fresh water ice and salt water are mixed with each other, and the salt water ice is crushed as much as possible to obtain salt water ice. To manufacture.

A roller-type briquette machine 22 is connected to the discharge port 21 of the stirring / freezing machine 15. The briquette machine 22 enables the uniform distribution of the salt content of the salt water ice from the stirring and icing machine 15 and the press molding for molding. Further, at a position following the briquette machine 22, an ice storage 23 for storing press-formed salt water ice is provided. This ice storage 23
Is made of a heat insulating material such as a vacuum heat insulating material (VSI).

Next, a manufacturing process of salt water ice will be described. The raw water supplied from the raw water inlet 2 to the sterilization activation device 1 is subjected to sterilization treatment by mixing ozone-containing air here. Part of the raw water that has exited the sterilization activation device 1 is sent to an ice making machine 5, where it is made into flaky or granular fresh water ice. on the other hand,
The rest of the raw water is sent to the salt water tank 6 of the salt water production device 4,
It is mixed with the salt supplied from the salt supply port 7 and stirred by the stirrer 8 to become salt water having a predetermined concentration. This salt water is
The salt water metering pump 9 sends the salt water spray nozzle 12 at a constant flow rate.

Fresh water ice 13 from the ice making machine 5 is sent to the spraying section 11, where salt water 14 from the nozzle 12 is sprayed and added to the surface thereof. This ice is then fed from the supply port 16 to the inside of the stirring frosting machine 15. The stirring / freezing machine 15 is kept at an internal temperature of about −5 ° C. by the brine flowing through the cooling jacket 17. In this supercooled state, fresh water ice and salt water are agitated and uniformly mixed to obtain flaky or granular salt water ice which is maximized in size. At this time, it is preferable that the salt water 14 sprayed from the nozzle 12 has a concentration as high as possible to reduce the amount of salt water supplied and to reduce the cooling load of the stirring / freezing machine 15.

The flaky or granular salt water ice discharged from the agitator / freezer 15 has irregular shapes, and has a drawback that salt does not easily penetrate into the fresh water ice. Therefore, by pressing the ice with the briquette machine 22, the grain size of the ice is made as small as possible, and the grain boundary is coated with salt crystals. By doing so, molded salt water ice of any size in which salt and fresh water ice are uniformly mixed can be obtained.

The formed salt water ice is supplied into the ice storage 23. Then, it is stored in the ice storage 23 made of a material having excellent heat insulating properties such as a vacuum heat insulating material, and taken out from the ice storage 23 for use.

By appropriately setting the concentration and flow rate of the salt water produced in the salt water producing device 4 and sent to the spray nozzle 12 by the salt water metering pump 9, salt water ice having an arbitrary salt concentration can be produced.

For example, in the case of producing 1 kg of salt water ice having a salt concentration of 2%, first, 60 g of raw water and 20 g of salt are supplied to the salt water tank 6 and stirred by the stirrer 8 to produce 80 g of salt water having a 25% concentration. Next, 920 g of fresh water ice is produced by the ice maker 5, and 80 g of the above-mentioned 25% concentration of salt water is sprayed onto the fresh water ice by the salt water metering pump 9. After that, the mixture is cooled by the stirring and icing machine 15 and sufficiently mixed, and then crushed and molded by the briquette machine 22. As a result, 980 g of water is contained in 20 g of salt, that is, 1 kg of salt water ice having a salt concentration of 2% is obtained.

EFFECTS OF THE INVENTION As described above, according to the present invention, not only salt water ice that can be used as it is for keeping freshness of fresh seafood can be easily obtained, but also flaky or granular fresh water ice produced by an ice making machine. Since an apparatus for adding an arbitrary concentration and an arbitrary amount of salt water from the apparatus for producing salt water is provided in the apparatus, it is possible to easily obtain salt water ice having a required salt concentration. In addition, since a device for press-forming salt water ice from a stirring and freezing machine is provided, the grain size of the ice can be reduced and the grain boundary coating can be performed with salt crystals. Molded salt water ice can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic view of an apparatus for producing salt water ice according to an embodiment of the present invention. 4 ... Salt water production equipment, 5 ... Ice making machine, 6 ... Salt water tank, 9 ... Salt water metering pump, 12 ... Salt water spray nozzle, 15
...... Stirring ice machine, 22 …… Briquette machine, 23 …… Ice storage.

Claims (1)

[Claims] 1. An ice making machine for producing flaky or granular fresh water ice from fresh water, a salt water producing apparatus capable of producing salt water having an arbitrary concentration and capable of sending the produced salt water at an arbitrary flow rate, A device for adding salt water sent from the salt water producing device to the fresh water ice produced by the ice making machine, and the fresh water ice and the salt water are stirred and mixed under a supercooled atmosphere to mix the salt water ice as large as possible. Agitating freezing machine
An apparatus for producing salt water ice, comprising: a press forming apparatus for achieving and forming a uniform distribution of salt content of the salt water ice from the stirring and freezing machine, and an ice storage for storing the press formed salt water ice.