KR-20260065405-A - MAGNETIC COOLING DEVICE AND COOLING CYCLE APPARATUS INLCUDING THE SAME

Abstract

The cooling cycle device may include a first heat exchanger arranged to release heat, a second heat exchanger arranged to absorb heat, and a magnetic cooling device disposed between the first heat exchanger and the second heat exchanger and arranged to operate by sequentially switching between a first mode and a second mode. The magnetic cooling device may include a magnetic heat-retaining material, a magnet arranged to form a magnetic field, and a current generating device arranged to generate an electric current.

Inventors

• 김영노
• 김민수
• 손현우
• 정주식

Assignees

• 삼성전자주식회사

Dates

Publication Date

20260508

Application Date

20241101

Claims (20)

1. A first heat exchanger configured to release heat; A second heat exchanger configured to absorb heat; and A magnetic cooling device disposed between the first heat exchanger and the second heat exchanger and configured to operate by sequentially switching between a first mode and a second mode; comprising The above magnetic cooling device is, A magneto-calorimetric material configured to change temperature by a magnetic field and arranged to allow a heat transfer fluid to flow; A magnet arranged to form the above magnetic field; and A current generating device disposed adjacent to the above-mentioned magnetic heat material and configured to generate current; comprising While the magnetic cooling device is operating in the first mode, the magnet approaches the magnetic thermal material to raise the temperature of the heat transfer fluid flowing through the magnetic thermal material, and the current generating device generates a current in a first direction to cause the heat transfer fluid with raised temperature to flow toward the first heat exchanger. A cooling cycle device in which, while the magnetic cooling device is operating in the second mode, the magnet moves away from the magnetic heat material to lower the temperature of the heat transfer fluid flowing through the magnetic heat material, and the current generating device generates a current in a second direction to cause the heat transfer fluid with lowered temperature to flow toward the second heat exchanger.
2. In paragraph 1, The above magnet is a cooling cycle device capable of moving and/or rotating relative to the magnetic thermal material so as to approach or move away from the magnetic thermal material.
3. In paragraph 1, A cooling cycle device in which each of the first direction and the second direction is orthogonal to the direction of the magnetic field formed by the magnet.
4. In paragraph 1, A cooling cycle device in which each of the first direction and the second direction is orthogonal to the direction of movement of the heat transfer fluid.
5. In paragraph 1, A cooling cycle device in which the first direction and the second direction are opposite directions.
6. In paragraph 1, The above-described magnetic calorimetric material is composed of a plurality of magnetic calorimetric blocks arranged spaced apart by a predetermined gap and having different Curie temperatures, and The above current generating device is a cooling cycle device comprising at least one electrode arranged to correspond to the above predetermined gap.
7. In paragraph 6, The above current generating device is, First electrode; and A cooling cycle device comprising: a second electrode spaced apart from the first electrode by a predetermined gap.
8. In Paragraph 7, While the above-mentioned magnetic cooling device is operating in the first mode, the current generating device generates a current flowing from the second electrode to the first electrode, and While the above-mentioned self-cooling device is operating in the second mode, the current generating device is a cooling cycle device that generates a current flowing from the first electrode to the second electrode.
9. In paragraph 1, The above magnetic calorific material is a first magnetic calorific material, and The above magnetic cooling device is a cooling cycle device further comprising a second magnetic heat material spaced apart from the first magnetic heat material and arranged to allow a heat transfer fluid to flow.
10. In Paragraph 9, The above current generating device is, So that the heat transfer fluid flowing through the first magnetic heat material and the heat transfer fluid flowing through the second magnetic heat material move in opposite directions to each other. A cooling cycle device that generates a current in one of the first direction and the second direction in the first magnetic heat material, and generates a current in the remaining of the first direction and the second direction in the second magnetic heat material.
11. In paragraph 1, The above-mentioned magnetic calorific material is provided in multiple quantities, and Multiple magnetic calorimetric materials are arranged circumferentially with respect to a central axis, and The above magnet is a cooling cycle device rotatable with respect to the plurality of magnetic thermal materials around the above central axis.
12. In Paragraph 11, The above current generating device includes a plurality of electrodes, and A cooling cycle device configured such that the plurality of magnetic heat materials and the plurality of electrodes are arranged alternately.
13. In paragraph 1, The above magnetic cooling device is, A case provided to accommodate the above-mentioned magnetic heat material; A first inlet formed on one side of the above case and arranged to allow heat transfer fluid to flow in from the second heat exchanger; A first outlet formed on the other side of the above case and arranged to discharge a heat transfer fluid toward the first heat exchanger; A second inlet formed on the other side of the above case and arranged to allow heat transfer fluid from the first heat exchanger to flow in; and A cooling cycle device comprising: a second outlet formed on one side of the above case and arranged to discharge a heat transfer fluid toward the second heat exchanger.
14. In Paragraph 13, The above current generating device is, A first electrode provided between the first inlet and the second outlet; A second electrode spaced apart from the first electrode with the first inlet in between; A third electrode spaced apart from the first electrode with the second outlet in between; A fourth electrode provided between the second inlet and the first outlet; A fifth electrode spaced apart from the fourth electrode with the first outlet in between; and A cooling cycle device comprising: a sixth electrode spaced apart from the fourth electrode with the second inlet in between.
15. In Paragraph 14, While the above-mentioned magnetic cooling device is operating in the first mode, the current generating device generates a current flowing from the second electrode to the first electrode and a current flowing from the fifth electrode to the fourth electrode, and While the above-mentioned self-cooling device is operating in the second mode, the current generating device is a cooling cycle device that generates a current flowing from the third electrode to the first electrode and a current flowing from the sixth electrode to the fourth electrode.
16. A magnetic calorimetric material whose temperature changes based on a magnetic field, wherein the magnetic calorimetric material heats a heat transfer fluid as the temperature rises and cools a heat transfer fluid as the temperature falls; A magnet forming the above magnetic field; and A current generating device configured to generate current; comprising While the magnet approaches the magnetic heat material, the heat transfer fluid is heated by the magnetic heat material with increased temperature, and the current generating device generates a current in a second direction intersecting the first direction to move the heated heat transfer fluid in a first direction. A magnetic cooling device in which, while the magnet moves away from the magnetic heat material, the heat transfer fluid is cooled by the magnetic heat material with a lowered temperature, and the current generating device generates a current in a fourth direction intersecting the third direction to move the cooled heat transfer fluid in a third direction.
17. In Paragraph 16, The first direction and the third direction are opposite directions to each other, and A self-cooling device in which the second direction and the fourth direction are opposite directions.
18. In Paragraph 16, The above-described magnetic calorimetric material is composed of a plurality of magnetic calorimetric blocks arranged spaced apart by a predetermined gap and having different Curie temperatures, and The above current generating device is a cooling cycle device comprising at least one electrode arranged to correspond to the above predetermined gap.
19. In Paragraph 16, A magnetic cooling device further comprising a driving device configured to move and/or rotate the magnet relative to the magnetic heat material.
20. A first heat exchanger configured to release heat; A second heat exchanger configured to absorb heat; and A magnetic cooling device disposed between the first heat exchanger and the second heat exchanger; comprising The above magnetic cooling device is, A magnetocalorimetric material whose temperature changes based on a magnetic field, which heats a heat transfer fluid as the temperature rises and cools a heat transfer fluid as the temperature falls; and A current generating device that generates a current in a first direction in the magnetic thermal material or generates a current in a second direction in the magnetic thermal material; The heat transfer fluid with increased temperature flows toward the first heat exchanger by the current in the first direction, and A cooling cycle device in which a heat transfer fluid with a cooled temperature flows toward the second heat exchanger by the current in the second direction.

Description

Magnetic cooling device and cooling cycle apparatus including the same The present disclosure relates to a self-cooling device and a cooling cycle device including the same. Generally, among home appliances, refrigerators and air conditioners include cooling devices to supply cold air to spaces requiring cooling. For example, a refrigerator requires a cooling device to supply cold air to the food storage compartment in order to keep food fresh for a long period. For example, an air conditioner requires a cooling device to supply cold air to an indoor space to regulate the temperature and humidity to suit human activity. Conventional refrigerators and air conditioners utilize cooling cycle devices that repeatedly compress and expand refrigerant. However, the refrigerants used in the operation of these conventional cooling cycle devices can accelerate global warming. Additionally, there is a risk of explosion due to refrigerant leakage. Therefore, there has been a demand for eco-friendly cooling devices that do not accelerate global warming and have a low risk of explosion. Among these, cooling cycle devices utilizing the magnetocalorme effect are capable of implementing eco-friendly cooling without using conventional refrigerants, leading to active research in this area recently. One aspect of the present disclosure provides an environmentally friendly magnetic cooling device and a cooling cycle device including the same. One aspect of the present disclosure provides a magnetic cooling device with improved ease of use and a cooling cycle device including the same. One aspect of the present disclosure provides a self-cooling device of a simple structure and a cooling cycle device including the same. One aspect of the present disclosure provides a self-cooling device that does not require a pump and a cooling cycle device including the same. One aspect of the present disclosure provides a self-cooling device with reduced noise and a cooling cycle device including the same. One aspect of the present disclosure provides a self-cooling device with improved heat transfer efficiency and a cooling cycle device including the same. The technical problems to be solved in this document are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which this invention belongs from the description below. A cooling cycle device according to one embodiment of the present disclosure may include: a first heat exchanger arranged to release heat; a second heat exchanger arranged to absorb heat; and a magnetic cooling device disposed between the first heat exchanger and the second heat exchanger and arranged to operate by sequentially switching between a first mode and a second mode. The magnetic cooling device may include: a magnetic heat quantity material configured to change temperature by a magnetic field and arranged to allow a heat transfer fluid to flow through it; a magnet arranged to form the magnetic field; and a current generating device disposed adjacent to the magnetic heat quantity material and arranged to generate a current. While the magnetic cooling device is operating in the first mode, the magnet approaches the magnetic heat quantity material to raise the temperature of the heat transfer fluid flowing through the magnetic heat quantity material, and the current generating device may generate a current in a first direction to cause the heat transfer fluid with raised temperature to flow toward the first heat exchanger. While the magnetic cooling device is operating in the second mode, the magnet moves away from the magnetic heat material to lower the temperature of the heat transfer fluid flowing through the magnetic heat material, and the current generating device can generate a current in the second direction to cause the heat transfer fluid with lowered temperature to flow toward the second heat exchanger. A magnetic cooling device according to one embodiment of the present disclosure may include: a magnetic calorimetric material whose temperature changes based on a magnetic field, which heats a heat transfer fluid as the temperature rises and cools the heat transfer fluid as the temperature falls; a magnet forming the magnetic field; and a current generating device provided to generate a current. While the magnet approaches the magnetic calorimetric material, the heat transfer fluid is heated by the magnetic calorimetric material whose temperature has risen, and the current generating device may generate a current in a second direction intersecting the first direction to move the heated heat transfer fluid in a first direction. While the magnet moves away from the magnetic calorimetric material, the heat transfer fluid is cooled by the magnetic calorimetric material whose temperature has fallen, and the current generating device may generate a current in a fourth direction intersecting the third direction to move the cooled hea