Method of ice generation

FIELD: heating.

SUBSTANCE: method to generate ice scales includes growing of ice on one side of a membrane, the other side of which contacts with coolant, which is cooled down to negative temperature, and periodical action at the membrane at the side of coolant. The elastic element is a membrane, on surface of which water is sprayed. The membrane, coolant and water spraying facility are located in the chamber.

EFFECT: using this invention makes it possible to provide for simplified ice production with reduction of its energy intensity.

12 cl, 1 dwg

 

The invention relates to the field of means and methods of obtaining the ice, in particular flake ice, and can be used in chemical, pharmaceutical and microbiological industry, and also at the enterprises of agro-industrial complex and in the systems of heat accumulators.

Under the present technical solution, the term "water" means any water-based liquid medium capable at low temperatures to produce ice.

Known (US patent 5329780) way to generate ice. According to a known method place the cooling element between the flexible steel diaphragms. Membrane marriage to the cooling element, which pumps the refrigerant. For membrane applied water. After freezing on the membranes of ice between the cooling element and the membrane pump warm fluid. Membrane bend and strain layers of ice that leads to the breaking of the plates of ice starting to melt from the side of the membrane.

The disadvantage of this method should be recognized as very high energy intensity, and obtaining a sufficiently large pieces of ice.

Also known (RU, patent 2077683) a method of obtaining a stream of ice pellets by mixing in the gas flow of the refrigerant and the liquid drops which this kristallisera in ice pellets, and the process is carried out in two E. the APA, on the first carry out the mixing of the gas stream and the streams of the refrigerant with its partial evaporation and atomization of the liquid in the form of a plume of fine droplets, and the second mixture of the first two components fanned the flame of the third component with the formation of a stream of ice pellets.

The disadvantage of this method should recognize it quite difficult perform, and obtaining no flakes, and granules of ice.

Also known (RU, patent 2419042) the method of obtaining losteria suspension, including cooling water-salt solution with the subsequent removal of the resulting losteria suspension in the tank of the finished product, and cooling is carried out at the saturation water-salt solution with carbon dioxide under pressure 3,0-3,2 MPa.

The disadvantage of this method should recognize the need for saturation of the water environment with carbon dioxide.

The closest analogue of the developed method can be recognized (RU, patent 2454616) way to generate ice. According to a known method carry out pumping water through the heat exchanger, removing the formed ice. To do this, from the tank water through the supply pipe serves a pump in the surge tank and the interior of an elastic element located in the heat exchanger by the refrigerant is cooled to subzero temperatures, and giving is giving refrigerant is set less than the water pressure in the elastic element, when filling the expansion tank open valve to reduce the pressure in the elastic element, separated by deformation of the elastic element from the inner surfaces of the ice crystals along with the flow of water through bypass pipe received in the container.

The disadvantage of this method should recognize the complexity of the technical device that implements the method.

Technical result achieved during the implementation of the developed method consists in the simplification of the method with simultaneous reduction of its intensity.

To achieve the technical result of the proposed use, a method of generating flake ice. According to the developed method produces a build-up of ice on one side of the membrane, the other side which touches the refrigerant is cooled to subzero temperatures, and periodic effect on the membrane side of the refrigerant, and use a membrane on the surface of which spray water in this membrane, the refrigerant and means of water spray located in the chamber.

The principal difference of the developed method is the use of drip applying water to the surface of the elastic membrane. A small amount of water (drop) quickly gives the membrane through the membrane to the refrigerant) its internal energy, in the Yes of the liquid turns into a solid and premarket to the membrane surface in the form of small flakes of ice. By increasing the area of the elastic membrane due to the impact on her from the refrigerant, small shards of ice lighter separated from the membrane without requiring the application of additional mechanical impact.

When implementing the method, it is desirable to use pre-cooled water. This allows, first, to accelerate the process of ice formation, as chilled water have less to give to the internal energy of the refrigerant to pass liquid to the solid state, and, secondly, fallen from the surface of the elastic membrane shards of ice cold water will be less to melt.

To spray water on the surface of the elastic membrane can be used in any device (means)capable of spraying water into the formed drops of kinetic energy, providing the movement of the droplets from the exit means to the surface of the elastic membrane.

As refrigerant can be used in liquid carbon dioxide, concentrated aqueous solutions of mineral salts, solutions of glycols. This list does not limit possible implementations.

The elastic membrane can be manufactured, in particular, silicone rubbers, butadiene-styrene rubbers, polyvinylchloride, polietilenglikolsuktsinata. The examples do not limit the list of materials is impressive, which can be used as an elastic membrane.

In a preferred implementation of the developed method the tool, spray water, have the elastic membrane. This allows us to solve several problems. First, unfrozen water does not accumulate on the surface of the elastic membrane and prevents the formation of flakes of ice, and, secondly, it is easier to ensure uniformity of the falling drops of water on the surface of the elastic membrane and, consequently, the uniformity of growth-flake ice on the surface of the elastic membrane.

Less preferable to use the placement tool, the spray water to the sides of the membrane. This option solves the problem of removing from the surface of the elastic membrane unfrozen water, but is difficult to uniform deposition of water droplets on the surface of the elastic membrane.

In some embodiments of the tool, the spray water can be placed over the membrane. But it is difficult to remove unfrozen water, it is necessary to use additional means of flakes of ice from the surface of the elastic membrane. These options can be used in the case of obtaining a water-ice mixture with small size flake ice if the elastic membrane at a slight angle relative to horizontal, and used what I refrigerant, able to freeze water. In this case, there is a spontaneous deletion (swelling) unfrozen water from the surface of the elastic membrane which will capture a spin-off from the surface of the elastic membrane shards of ice.

The effect on the elastic membrane from the side of the refrigerant may be any mechanical, hydraulic or pneumatic. It is most preferable in the case of liquid refrigerant to use hydraulic impact, expressed in applying to the surface of the elastic membrane of additional volumes of the cooled refrigerant. This is, firstly, allow to separate shards of ice from the surface of the elastic membrane and, secondly, will reduce the temperature of the refrigerant on the surface of the elastic membrane. In the most preferred implementation of the developed method, it is desirable to effect pumping of the refrigerant in the pulsing mode. This will allow you to constantly maintain the desired temperature of the refrigerant on the surface of the elastic membrane, and also to periodically separate the flakes of ice from the surface of the elastic membrane.

For better contact of water droplets with the surface of the elastic membrane, it is desirable to use a membrane made of hydrophilic material or pre-hydrofil is to examine the surface of the membrane.

The specified camera is desirable to perform temperature-controlled. This will avoid loss of energy to the cooling of the system.

When using the camera, it is additionally establish at least one container to collect water spattered, not turned into ice, and one container for loose flakes of ice. Containers may be either removable or permanently installed. In the latter case the vessel should be made with the possibility of the fence (draining) of water and intake of scales, and the water intake can be done with the simultaneous intake of flake ice and separation from water flake ice.

One of the variants of the method shown in the drawing, with the following notation is used: elastic membrane 1, a pump 2, a nozzle 3, water 4, case 5, the refrigerant 6, the layer 7 of the water and flake ice.

Generating ice is as follows.

On the external surface of the elastic membrane 1 by the pump 2 through the nozzle 3 serves water 4, which is evenly irrigates the external surface of the membrane 1. The membrane 1 is installed on the housing 5 in such a way that between the housing 5 and the membrane 1 is formed chamber (cavity), which periodically submit and delete the refrigerant 6, which has a negative temperature. As a result of heat transfer through the membrane 1 between water 4 and 6 refrigerant of the water freezes,and on the surface of the membrane 1 formed by shards of ice. If you change the shape of the membrane 1 (dashed line) shards of ice separated from the surface of the membrane 1 and fall into the lower part of the body, where it forms a layer 7 of water with flakes of ice, which is removed manually or automatically.

1. Method of producing flake ice, including the build-up of ice on one side of the membrane, the other side which touches the refrigerant is cooled to subzero temperatures, and periodic effect on the membrane side of the refrigerant, characterized in that an elastic element using a membrane on the surface of which spray water, and the membrane, the refrigerant and means of water spray located in the chamber.
2 the Method according to claim 1, characterized in that use chilled water.

3. The method according to claim 1, characterized in that the means of the spray water is located under the membrane.

4. The method according to claim 1, characterized in that the means of the spray water is located at the side of the membrane.

5. The method according to claim 1, characterized in that the means of the spray water is located above the membrane.

6. The method according to claim 1, characterized in that the membrane-side refrigerant act mechanically.

7. The method according to claim 1, characterized in that the membrane-side refrigerant act hydraulically.

8. The method according to claim 1, characterized in that the membrane from the sides of the refrigerant effect pneumatically.

9. The method according to claim 1, characterized in that the use of a membrane made of hydrophilic material.

10. The method according to claim 1, characterized in that the surface of the membrane hydrophilicity.

11. The method according to claim 1, characterized in that the camera additionally establish at least one container to collect water spattered, not turned into ice, and away from the membrane flakes of ice.

12. The method according to claim 11, characterized in that the used capacity made with the possibility of draining excess water collected.



 

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EFFECT: enhanced efficiency.

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