SU1451490A1 - Magnetocalorific refrigerator - Google Patents

Abstract

This invention relates to a cryogenic technique. The purpose of the invention is to increase the operational reliability of the refrigerator. A cylinder with a displacer 4 is included in the coolant circuit. Porous magnetocaloric elements 2 and 3 are equipped with coaxially placed electromagnets 10 and 11, Expeller 4 has, ferromagnetic inserts 5 and 3, installed at the ends, 3 and 3: 3 to the heat sink 9 are ring-shaped and installed coaxially on the cylinder 12. The heat sink 9 is placed in the middle part of the cylinder 12 by means of elements 2. and-3. The heat sinks 7 and 8 are installed at the ends of the cylinder 12, the distance between the inserts 5 and 6 of the displacer 4. Exceeds the distance between the electromagnets 10 and 11. The design of the refrigerator eliminates the mechanical drive of the displacer. When the electromagnet W or 11 is turned on, due to the volt gigwan of the insert 5 or 6 to the center of the electromagnet 10 or P, the displacing device 4 1 sludge is therefore provided.

Description

The invention relates to cryo (54) TOP (57) gene technology. The purpose of the invention to increase the operational reliability of the refrigerator. A coolant cylinder is included in the coolant circuit

4. The porous magnetocaloric elements' 2 and 3 are equipped with coaxially arranged electromagnets 10 and 11. The displacer 4 is installed, the ferromagnetic inserts 5 and 6 are installed on the ends, Elements 2iZ: and the heat transfer unit 9 are made circular and mounted coaxially on the cylinder 12 The heat sink 9 is placed in the middle of the cylinder 1'2 between the elements 2.and 3. The heat sinks 7 and 8 are installed at the ends of the cylinder 12. The distance between the inserts 5 and 6 of the displacer 4 exceeds the distance between the electromagnets 10 and 11. The design of the refrigerator allows Have a mechanical displacer drive. When you turn on the electromagnet 10 or 11 by retracting the insert 5 or 6 to the center of the electromagnet 10 or 11, respectively, is provided. Displacer 4. 1 ill.

moving

Joint venture

The invention relates to cryogenic engineering, in particular to refrigerators operating on the basis of the magnetocaloric effect.

The purpose of the invention, - improve the operational reliability _{of the} excluded by h | eniya mechanical displacer drive.

J 451490

The drawing shows a diagram of a refrigerator.

The magnetocaloric refrigerator contains a housing 1, magnetocaloric elements 2 and 3 with a porous working fluid, a displacer .4 with ferromagnetic 15 short-circuit elements'5 and 6, heat sinks 7 and heat transfer 9, electromagnets 10.

11, cylinder 12, thermal insulation 13 of the cavity, working cavity 15 and;

cylinder 12. ·; 20

Elements 2 and with a porous working spruce and heat transfer device 9 are located; EOSNO between the cylinder 12 and the body ·. Propellant 4 is inside

8,;

and and t

with ts | and1indra 12. At the ends of the displacer '25 are placed ssalno with elements insulation 13 serves to reduce heat transfer between

About the caloric refrigerator, and the insulation is 14 l.flow from the environment * in RA 12 are filled with coolant.

Magnetocaloric refrigerator operates as follows.

At the moment when the electromagnet 11 is turned on, and the electromagnet 10 is turned off * SF, the displacer 4 is in the position shown in the drawing, that is, the ferromagnetic insert 5 is located in the middle part (center) of the electromagnet 10. At this time, the element 2 with .

ferromagnetic inserts ¹ and 6 are strengthened. Electromagnets 10 and I outside the casing are several times 3. Heat is warm with cold and relatively warm parts magnetothermal heat is whole and for reduction (morning cavities of casing 1 and with a .35 working fluid are demagnetized ^ and element 3 is magnetized The ferromagnetic insert 6 is drawn toward the center of the electromagnet 11, which leads to the displacement of the displacer 4 to the left (according to the drawing) and, consequently, to the pumping of the heat carrier from the cavity 15 through the heat receiver 7, element 2 with a porous working fluid, and the heat receiver 8 into the cavity l 16. The coolant passing through element 2 with a demagnetized porous working fluid is cooled, then it takes heat from the heat transfer sensor 9 (realization of cooling capacity), then it takes the magnetization heat. element 3 with a porous working fluid and gives this heat to the heat sink 8, and through it to the environment.When switching electromagnets 10 and 11, element 2 with a porous working fluid is magnetized on the contrary, and element 3 is demagnetized. The ferromagnetic insert 5 is drawn to the center of the electromagnet 10., which leads to the displacement of the displacer 4 to the right (according to the drawing) and the heat carrier from the cavity 16 to the cavity 15 is pumped through the element 3, where the coolant is cooled, the heat transfer device 9, from which the heat carrier takes away heat ( implements refrigeration production (irst)), element 2 with a porous working fluid, where the heat carrier removes the magnetization heat, which then gives the heat receiver 7th further to ok; rusting environment.

Next, the cycle repeats.

The distance between the ferromagnetic inserts 5 and 6 should exceed the distance between the centers of the electromagnets 10 th 11 in order to ensure the movement of the displacer 4 in the right direction. If the distance between the ferromagnetic inserts 5 and 6 is less than or equal to the distance between the centers of the electromagnets 10 and 11, then the displacer 4 pumps the coolant in the opposite direction to that required in accordance with the phase of applying and removing the field or does not pump the coolant at all.

Claims (1)

Claim A magnetocaloric refrigerator containing a cylinder with a displacer included in the coolant circuit, porous magnetocaloric elements equipped with coaxially arranged electromagnets, a heat sink and heat sink, characterized in that, in order to increase operational reliability, it contains an additional heat sink, the displacer is equipped with ferromagnetic inserts installed on the ends, the elements and the heat transfer are circular and mounted coaxially on the cylinder, and the transmitter is located in the middle part of the cylinder between magnesian 1451490 tocaloric elements, heat sinks are installed at the ends of the cylinder, and the distance between the ferromagnetic displacer inserts exceeds the distance between the electromagnets. Editor E. Kopcha Compiled by I. Taidakov Tehred M. Khodanich Proofreader V. Butyaga ' Order 7065/37 Circulation 462 Subscription VNIIIPI of the State Committee for Inventions and Discoveries at the State Committee for Science and Technology of the USSR 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Production and printing company, Uzhhorod, st. Project, 4