JPS6225950B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method for producing cooling water.

The present invention completely changes the concept of conventional water cooling methods and relates to a new method using a completely new mechanism, which allows cooling water at a constant low temperature to be produced accurately and quickly. Regarding. In particular, according to the present invention, it is possible to industrially produce large quantities of cooling water having a temperature as close to 0°C as possible, which has been extremely difficult to produce in the past.

A large amount of cooling water cooled to a certain temperature is required for refrigerators, sterile rooms, biology laboratories, food and beverage storage, and other various equipment, as well as for indoor air conditioning. An ideal and complete method for producing cooling water maintained at such low temperatures is not yet known.

The present invention was made to achieve this objective, based on the idea that it would be impossible to achieve such an ideal method if one was limited to the concept of conventional cooling methods. This was completed as a result of research that involved a fundamental change in thinking, departing from conventional methods and their principles.

That is, the present invention is a method that uses a cyclone, has ice adhered to its inner wall, and brings water into contact with the ice to exchange heat, thereby cooling the water.

The points of the water cooling method according to the present invention are as described above, but the method of the present invention will be described in further detail below with reference to a cooling device illustrated as an example of an apparatus for carrying out the method of the present invention. I will continue to do so.

First, gas is introduced into the cyclone 1 from the air pipe 2. This gas may be introduced into the cyclone 1 as it is without pre-treatment, but it is more advantageous in terms of energy economy to bring it as close as possible to the temperature to be cooled and to remove dust etc. It is convenient to use a separate cyclone sprayed with

The outer wall of the cyclone 1 is made of a heat insulating material, and is surrounded by a jacket 3. Inside the jacket 3, a cooling medium pipe 4 connected to the refrigerator R is arranged, for example, in a spiral shape. At the top of the cyclone 1, an ice-making water pipe 6 having an appropriate number of ice-making water spouts 5 is provided, for example, in a ring shape. When a cooling medium cooled to 0° C. or below is passed through the pipe 4 and water is flowed from the ice-making water spout 5, a layer of ice forms and adheres to the inner wall of the cyclone 17. Gaseous or liquid cooling media are used, and examples include calcium chloride, sodium chloride, magnesium chloride aqueous solution, brine such as kan water, ammonia, carbon dioxide, sulfur dioxide, methyl chloride, methylene chloride, and fluoride. Examples include hydrocarbons (Freon).

To produce cooling water, water is further flowed from the ice-making water pipe 6 onto the ice 7 formed on the inner wall of the cyclone, and heat exchange occurs between the ice and water, resulting in The water cools and collects at the bottom of the cyclone. This cooling water passes through the pipe 13 from the outlet 12 and is directly taken out from the cooling water outlet 20 after or without passing through the filter F.

In addition to applying water to the ice as described above,
Water may be applied within the cyclone by spraying or other suitable methods, or these methods may be combined. Examples of methods for cooling water by spraying water into a cyclone include the following method.

That is, a large number of water spray nozzles 9 are provided on the outer periphery of the exhaust pipe 8 disposed inside the cyclone 1.
9b, 9c..., water is sprayed into the cyclone from these nozzles and brought into contact with the ice 7 on the inner wall to cool the water. The cooled water may be taken out as it is from the cooling water outlet 20, but a portion of it may be circulated through the tank 10, through the cooling water pipe 11, and into the cyclone 1 via the nozzle 9.

To do this, a pipe 13 is installed at the bottom of the outlet 12, and the cooling water flowing down is filtered by a filter F to remove dust and other particles, and then the valve V is switched to send it to the tank 10, and the pump P is used to send the cooling water to the cooling water pipe 1.
1, and then the cooling water is sprayed from the cooling water spray nozzle 9.

If necessary, additional untreated water is supplied from the water supply port 21, but in this case, if the temperature difference between the temperature of that water and the temperature of the water circulating in the cycle is very large. In order to adjust the water temperature, a suitable heat exchanger, usually a cooler, is installed in the tank 10.

When using the above-mentioned nozzle 9, when using the ice-making water pipe 6 described above, or when using these in combination, the capacity of the cyclone, the surface area of the ice layer 7, the amount of water to be applied, the flow rate, etc. By adjusting the water temperature, a large amount of cooling water at a desired temperature can be produced.

And, the method for producing cooling water according to the present invention has 0
It is particularly suitable for producing water cooled to .degree. For the preservation and management of substances that would deteriorate in quality or become unusable if frozen, it is essential to use water at the lowest possible temperature without freezing, that is, as close to 0°C as possible. However, with the conventional method of producing cooling water using a refrigerator, it quickly becomes supercooled to sub-zero temperatures and turns into ice, and the control of this is extremely delicate. It was extremely difficult to do so. Therefore, in reality, we have had no choice but to mix water and ice sufficiently in a tank to create ice water and use this water, but this method is not industrial at all, and temperature control This was also extremely difficult and could not be called a practical method.

However, according to the present invention, cyclone 1
Once ice forms on the inner wall of the refrigerator, even if the temperature of the cooling medium becomes supercooled to -5°C due to the action of the refrigerator R, the temperature of the ice will remain at 0°C.
The water that comes into contact with this is not cooled below 0°C. Therefore, there is no need to perform delicate temperature control as in the case of direct cooling with a refrigerant in the conventional method, and it is possible to industrially easily produce large amounts of water that has been cooled to a temperature as close as possible to 0°C. This results in a remarkable effect in terms of productivity. In other words, the method of the present invention has a major feature in that it has newly discovered a completely new principle of using ice 7 as a buffer zone, and has utilized this to an industrial advantage.

The water cooled to 0°C may be taken out entirely from the cooling water outlet 20 and used for each purpose as described above, or a part of it may be taken out from the cooling water outlet 20 and used for each purpose.
It is advantageous in terms of energy economy to switch the fuel and circulate it through the pipe 11 to the nozzle 9 and use it again.

The 0°C cooling water produced in this way can be used directly as is, or it can be led to a refrigerator and used as a refrigerant to cool the refrigerator and/or as a cold water shower. It is possible. In general, the quality of seafood, meat, vegetables, fruits, etc. deteriorates significantly when frozen, so it is necessary to store them in the refrigerator at the lowest possible temperature, that is, as close to 0°C as possible, without freezing. , a refrigerator using cooling water at 0°C is exactly suitable for this purpose.

The cooling water produced in this way is widely used in addition to the above-mentioned uses, as well as in sterile rooms and for the storage of biochemical products such as blood products and microbial products that must be kept at the lowest possible temperature while avoiding freezing. It can also be advantageously used in chambers and other applications.

Furthermore, according to the present invention, since the cyclone is used, the effect of the cooling water and ice 7 also provides the remarkable effect that air, carbon dioxide gas, and other gases vented into the cyclone are also cooled. That is, normally, a preliminary cyclone removes dust and a gas, for example air, whose temperature is controlled to about 10°C, is sent into the cyclone 1, and the refrigerant pipe 4 is filled with refrigerant cooled to -1°C. Once circulated, a cooling gas, for example a gas cooled to a temperature very close to 0° C., is exhausted from the exhaust pipe 8. The exhaust gas cooled in this way can be used as a refrigerant in the refrigerator and/or as a cooling gas blown directly into the refrigerator.In particular, the gas cooled to 0°C can be used, so that the above-mentioned freezing can be avoided. It can be used particularly advantageously for storing items that must be avoided. By using this cooling gas and cooling water together, ideal cooling storage can be achieved.

[Brief explanation of the drawing]

The drawing is a sectional view illustrating one embodiment of the apparatus used to carry out the method of the present invention. 1...Cyclone, 5...Ice making water spout, 6
... Water pipe for ice making, 7 ... Ice, 9 ... Cooling water spray nozzle, 20 ... Cooling water outlet, 21 ... Water supply port.

Claims (1)

[Claims] 1. A method for producing cooling water, which comprises forming and adhering ice on the inner circumferential wall of a cyclone, and causing water to flow down and/or be sprayed onto the ice to exchange heat with the ice, thereby cooling the water.