SU1486716A1 - Chamber for storing frozen food in water-oversaturated air - Google Patents

Description

The invention relates to refrigeration equipment, namely, refrigeration chambers for storing frozen products, equipped with a device for air humidification. The aim of the invention is to reduce shrinkage of products by increasing the degree of saturation of the air and increase reliability. The cold air from the heat-insulated casing cooled by the evaporator 2 is sucked through the pipeline 5 by the booster 4 and the air is supplied to the humidification section 7, where water is supplied from the metering tank 18 through the atomizer 8 made in the form of a magnetostrictor. When electromagnetic energy is supplied to the magnetostrictor core, ultrasonic vibrations of a kilohertz range arise in it, which are converted on the flange 9 into surface oscillations with an amplitude of several microns, as a result of which the water coming out of the hole in the tip of the magnetostrictor is divided into particles 2-4 microns in size, gushing in the volume of compartment 7. Here, the sprayed moisture is picked up by a stream of cold air, saturating it to 100% or more, and then supersaturated air enters the volume of the body 1.2 Il. -1/3

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The invention relates to refrigeration equipment, namely, refrigeration chambers for storing frozen products, equipped with a device for air humidification.

The aim of the invention is to reduce shrinkage of products by increasing the degree of saturation of the air and increase reliability.

FIG. 1 schematically shows a chamber for storing frozen food in air saturated with moisture; in fig. 2 - water spray.

A chamber for storing frozen food in supersaturated moisture air contains a heat-insulated cooled case 1, an evaporator 2 placed inside it, connected to a condensing unit 3, the chamber is equipped with a device for thermal and humidity treatment of air, including an air flow inducer 4, connected with suction 5 and discharge 6 pipelines, the latter has before entering the chamber compartment 7, the cross-sectional area of which is larger than the cross-sectional area of the discharge pipeline 6.

The chamber is equipped with a water spray 8 which serves to convert air into a supersaturated state, made in the form of a magnetostrictor, the flange 9 of which is installed in the lower part of the compartment 7. The tip 10 and the flange 9 of the magnetostrictor have an axial channel 11 with an outlet 12. The tip of the magnetostrictor is fixed on the core 13 of the package of germanium steel. The winding 14 of the core is connected to an ultrasonic generator 15. The magnetostrictor is equipped with a heat exchange jacket 16, successively connected by conduits 17 to a metering tank 18 and an axial channel 11 in the tip 10.

The camera for storing frozen food in supersaturated moisture air works as follows.

The cold recirculated air from the housing 1 cooled by the evaporator 2 connected to the condensing unit 3 is sucked through the pipeline 5 by the booster 4 of the air flow and is supplied to the humidification section 7 of the magnetostrictor through the discharge pipe 6 to humidify the compartment 7. The water from the metering tank 18 goes initially to the heat exchange jacket 16 for cooling the magnetostrictor, and then into the axial channel And and the hole 12 and spreads over the surface of the flange 9. When applying electromagnetic energy to the core 13 of the magnetostrictor, ultrasonic vibrations of the kilohertz range appear in it, which are converted on the flange 9, into surface oscillations with an amplitude of several microns, as a result of which the water leaving hole 12 is broken into particles up to 2-4 microns in size, flowing in the volume of compartment 7. The height of the position of the water metering tank 18 is selected in such a way as to ensure that the hydraulic resistance of the water lines, the heat exchange jacket of the magnetostrictor, the axial channel is overcome and that the water is poured onto the tip in an amount that prevents it from overflowing into the duct, i.e. spraying it without residue.

In compartment 7, the sprayed moisture is picked up by a stream of cold recirculated air, saturating it to 100% or more, and then the supersaturated air enters the cooled housing 1.

In such a chamber you can store frozen food with almost no shrinkage.

In addition, the introduction of a water spray chamber, made in the form of a magnetostrictor with an axial channel in the tip and a hole in the flange with an oscillating surface, simplifies and improves the reliability of the entire installation, since it does not require installing a large number of nozzles, devices for heating pipelines, and a humidifier does not contain any rotating or wear parts.

Claims (1)

Claim A chamber for storing frozen products in a supersaturated air containing a thermally insulated cooled case and a device for humidifying the air, including a water sprayer connected to the case of the suction and discharge pipes, communicated with the dosing unit, an air flow stimulator, characterized in that increase the degree of saturation of the air and increase reliability in operation; the sprayer is made in the form of a magnetostrictor, in the tip and flange of which an axial canal is made And a heat exchange jacket it communicates with the dispenser and with the channel in the ferrule, the discharge conduit has a chamber in front of the compartment, the cross sectional area is greater than the cross-sectional area of the injection pipeline and magnetostrictor flange at the lower part of said compartment. 1486-716 FSH