Magnetic cooling device and cooling cycle apparatus

Abstract

This magnetic cooling device comprises: a magnet provided to form a magnetic field; a magnetocaloric unit that includes a magnetocaloric material configured to change in temperature in response to the magnetic field, and is provided to allow heat transfer fluid to flow; a first fluid transfer device connected to a high-temperature side of the magnetocaloric unit and configured to transfer the heat transfer fluid by using centrifugal force; and a second fluid transfer device connected to a low-temperature side of the magnetocaloric unit and configured to transfer the heat transfer fluid by using centrifugal force.

Description

Self-cooling device and cooling cycle device

[0001] The present disclosure relates to a self-cooling device and a cooling cycle device.

[0002] Home appliances may 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.

[0003] 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.

[0004] 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 can realize eco-friendly cooling, leading to active research in this area recently.

[0005] Embodiments of the present disclosure provide a magnetic cooling device of a simple structure and a cooling cycle device including the same.

[0006] Embodiments of the present disclosure provide a self-cooling device that does not require a pump and a valve, and a cooling cycle device including the same.

[0007] Embodiments of the present disclosure provide a self-cooling device capable of uniformly flowing a heat transfer fluid and a cooling cycle device including the same.

[0008] 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.

[0009] A magnetic cooling device according to an exemplary embodiment of the present disclosure may include: a magnet arranged to form a magnetic field; a magnetic heat quantity unit arranged to allow a heat transfer fluid to flow, comprising a magnetic heat quantity material configured to change temperature by the magnetic field; a first fluid transfer device connected to the high-temperature side of the magnetic heat quantity unit and configured to transfer the heat transfer fluid using centrifugal force; and a second fluid transfer device connected to the low-temperature side of the magnetic heat quantity unit and configured to transfer the heat transfer fluid using centrifugal force. The first fluid transfer device may include: a first chamber configured to be rotatable with respect to the magnetic heat quantity unit; a first outlet configured to be connectable to the outer side of the first chamber; and a first inlet configured to be connectable to the inner side of the first chamber. The second fluid transfer device may include: a second chamber configured to be rotatable with respect to the magnetic heat quantity unit; and a second outlet configured to be connectable to the outer side of the second chamber. and may include a second inlet configured to be connectable to the inner part of the second chamber.

[0010] A cooling cycle device according to an exemplary 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 in a first mode or a second mode. The magnetic cooling device may include: a magnetic heat unit comprising a case and a magnetic heat material disposed inside the case and having a temperature that changes based on a magnetic field; a magnet that generates the magnetic field; a first fluid transfer device connected to the high-temperature side of the magnetic heat unit and configured to transfer a heat transfer fluid using centrifugal force; a second fluid transfer device connected to the low-temperature side of the magnetic heat unit and configured to transfer a heat transfer fluid using centrifugal force; and a rotating shaft configured to transfer rotational force to the magnet, the first fluid transfer device, and the second fluid transfer device.

[0011] FIG. 1 is a schematic diagram of a cooling cycle device according to one embodiment of the present disclosure.

[0012] FIG. 2 is a schematic diagram of a magnetic cooling device according to one embodiment of the present disclosure.

[0013] FIG. 3 is a schematic diagram of a magnetic heat unit according to one embodiment of the present disclosure.

[0014] FIG. 4 is a perspective view of a rotating shaft, a first fluid transfer device, and a second fluid transfer device according to one embodiment of the present disclosure.

[0015] FIG. 5 is an exploded view of a rotating shaft, a first fluid transfer device, and a second fluid transfer device according to one embodiment of the present disclosure.

[0016] FIG. 6 is a control block diagram of a magnetic cooling device according to one embodiment of the present disclosure.

[0017] FIG. 7 is a table showing an example of the operation of a magnetic cooling device according to one embodiment of the present disclosure.

[0018] FIG. 8 schematically illustrates a state in which a magnetic cooling device according to one embodiment of the present disclosure operates in a first mode.

[0019] FIG. 9 schematically illustrates a magnetic heat quantity unit and a magnet in a first mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0020] FIG. 10 schematically illustrates a first fluid transfer device in a first mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0021] FIG. 11 schematically illustrates a second fluid transfer device in a first mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0022] FIG. 12 schematically illustrates a state in which a magnetic cooling device according to one embodiment of the present disclosure operates in a second mode.

[0023] FIG. 13 schematically illustrates a magnetic heat unit and a magnet in a second mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0024] FIG. 14 schematically illustrates a first fluid transfer device in a second mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0025] FIG. 15 schematically illustrates a second fluid transfer device in a second mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0026] FIG. 16 schematically illustrates a first fluid transfer device in a first mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0027] FIG. 17 schematically illustrates a second fluid transfer device in a first mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0028] FIG. 18 schematically illustrates a first fluid transfer device in a second mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0029] FIG. 19 schematically illustrates a second fluid transfer device in a second mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0030] FIG. 20 is a perspective view of a refrigerator including a cooling cycle device according to one embodiment of the present disclosure.

[0031] FIG. 21 is a side cross-sectional view of a refrigerator including a cooling cycle device according to one embodiment of the present disclosure.

[0032] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments.

[0033] In relation to the description of the drawings, similar reference numerals may be used for similar or related components.

[0034] The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0035] In this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0036] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components.

[0037] The terms "part," "module," and "component" may be implemented in hardware or software. Depending on the embodiments, a plurality of "parts," "modules," and "components" may be implemented as a single component, or a single "part," "module," or "component" may include a plurality of components.

[0038] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish a component from another component and do not limit the components in other aspects (e.g., importance or order).

[0039] Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0040] Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this document, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0041] When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0042] When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components.

[0043] The meaning of "identical" includes items that are similar in attributes or similar within a certain range. Furthermore, "identical" implies "substantially identical." In the sense of being substantially identical, numerical values ​​that fall within the margin of error in manufacturing or differences that do not hold significance relative to a reference value should be understood as being included within the scope of being "identical."

[0044] Various embodiments according to the present disclosure will be described below with reference to the attached drawings.

[0045] FIG. 1 is a schematic diagram of a cooling cycle device according to one embodiment of the present disclosure.

[0046] Referring to FIG. 1, the cooling cycle device (1) may include a first heat exchanger (10) and a second heat exchanger (20). The first heat exchanger (10) may be configured to release heat. The second heat exchanger (20) may be configured to absorb heat.

[0047] For example, if the appliance including the cooling cycle device (1) is a refrigerator, the first heat exchanger (10) can release heat outside the storage room, and the second heat exchanger (20) can absorb heat from the air flowing into the storage room.

[0048] For example, if the home appliance including the cooling cycle device (1) is an air conditioner, the first heat exchanger (10) is provided in the outdoor unit to release heat to the outside of the outdoor unit, and the second heat exchanger (20) is provided in the indoor unit to absorb heat from the air flowing into the indoor unit.

[0049] The cooling cycle device (1) may include a magnetic cooling device (30). The magnetic cooling device (30) may be positioned between the first heat exchanger (10) and the second heat exchanger (20). The magnetic cooling device (30) may be configured to exchange heat with the first heat exchanger (10). The magnetic cooling device (30) may be configured to exchange heat with the second heat exchanger (20).

[0050] A heat transfer fluid may flow within the self-cooling device (30). The self-cooling device (30) may be configured to cool or heat the heat transfer fluid. The heat transfer fluid is not a refrigerant, and, for example, water may be used as the heat transfer fluid.

[0051] The magnetic cooling device (30) may include at least one fluid transfer device (300 and / or 400). The at least one fluid transfer device (300 and / or 400) may be configured to transfer a heat transfer fluid. The at least one fluid transfer device (300 and / or 400) may allow the heat transfer fluid to flow within the magnetic cooling device (30). For example, the heat transfer fluid may be configured to circulate within the magnetic cooling device (30) by the at least one fluid transfer device (300 and / or 400).

[0052] The self-cooling device (30) may include a first fluid transfer device (300). The first fluid transfer device (300) may be configured to perform heat exchange with the first heat exchanger (10). The first fluid transfer device (300) may be configured to receive a heated heat transfer fluid. The first fluid transfer device (300) may release heat toward the first heat exchanger (10).

[0053] The first fluid transfer device (300) may be referred to as the first fluid transfer device (300), the first fluid delivery device (300), the first fluid supply device (300), the first fluid injection device (300), etc.

[0054] For example, the cooling cycle device (1) may include a first heat transfer pipe (51). A first working fluid may be configured to flow along the first heat transfer pipe (51) and transfer heat between a first heat exchanger (10) and a first fluid transfer device (300). Heat generated in the first fluid transfer device (300) may be transferred to the first heat exchanger (10) through the first working fluid. The first heat transfer pipe (51) may have a closed-loop shape. The first working fluid is not a refrigerant, and, for example, water may be used as the first working fluid.

[0055] For example, the cooling cycle device (1) may include a first pump (41) disposed on a first heat transfer pipe (51). The first pump (41) may cause a first working fluid to flow along the first heat transfer pipe (51).

[0056] For example, unlike as illustrated in FIG. 1, the cooling cycle device (1) may not include the first heat transfer pipe (51) and the first pump (41). A first fan may be placed between the first heat exchanger (10) and the self-cooling device (30), and heat from the first fluid transfer device (300) may be transferred to the first heat exchanger (10) by the blowing force of the first fan. For example, the cooling cycle device (1) may include the first heat transfer pipe (51), the first pump (41), and the first fan.

[0057] The self-cooling device (30) may include a second fluid transfer device (400). The second fluid transfer device (400) may be configured to perform heat exchange with the second heat exchanger (20). The second fluid transfer device (400) may be configured to receive a cooled heat transfer fluid. The second fluid transfer device (400) may absorb heat from the second heat exchanger (20).

[0058] The second fluid transfer device (400) may be referred to as the second fluid transfer device (400), the second fluid delivery device (400), the second fluid supply device (400), the second fluid injection device (400), etc.

[0059] For example, the cooling cycle device (1) may include a second heat transfer pipe (52). The second working fluid may be configured to flow along the second heat transfer pipe (52) and transfer heat between the second heat exchanger (20) and the second fluid transfer device (400). Heat generated in the second heat exchanger (20) may be transferred to the second fluid transfer device (400) through the second working fluid. The second heat transfer pipe (52) may have a closed-loop shape. The second working fluid is not a refrigerant, and, for example, water may be used as the second working fluid.

[0060] For example, the cooling cycle device (1) may include a second pump (42) disposed on the second heat transfer pipe (52). The second pump (42) may allow the second working fluid to flow along the second heat transfer pipe (52).

[0061] For example, unlike as illustrated in FIG. 1, the cooling cycle device (1) may not include a second heat transfer pipe (52) and a second pump (42). A second fan may be placed between the second heat exchanger (20) and the self-cooling device (30), and heat from the second heat exchanger (20) may be transferred to the second fluid transfer device (400) by the blowing force of the second fan. For example, the cooling cycle device (1) may include all of the second heat transfer pipe (52), the second pump (42), and the second fan.

[0062] FIG. 2 is a schematic diagram of a magnetic cooling device according to one embodiment of the present disclosure. FIG. 3 is a schematic diagram of a magnetic heat quantity unit according to one embodiment of the present disclosure.

[0063] For reference, FIG. 2 illustrates an example in which a magnetic cooling device (30) includes one magnetic heat unit (100) and one magnet (200) for convenience. However, the magnetic cooling device (30) illustrated in FIG. 2 is merely an example of the present disclosure, and the magnetic cooling device (30) may include at least one magnetic heat unit (100) and at least one magnet (200).

[0064] A magnetic cooling device (30) according to one embodiment of the present disclosure may include a magnetic heat unit (100), a magnet (200), a first fluid transfer device (300), and a second fluid transfer device (400).

[0065] The magnetic heat unit (100) may be configured to allow a heat transfer fluid to flow. The heat transfer fluid may be heated or cooled as it passes through the magnetic heat unit (100). The temperature of the heat transfer fluid may be increased or decreased as it passes through the magnetic heat unit (100).

[0066] The magnetic heat unit (100) can utilize the magnetic heat effect. The magnetic heat effect refers to the effect in which, in response to applying a magnetic field to a magnetic material, the magnetic moment within the magnetic material aligns in the direction of the magnetic field and the temperature of the magnetic material changes. The magnetic heat unit (100) can raise the temperature of the heat transfer fluid by utilizing the magnetic heat effect. The magnetic heat unit (100) can heat the heat transfer fluid by utilizing the magnetic heat effect. The magnetic heat unit (100) can lower the temperature of the heat transfer fluid by utilizing the magnetic heat effect. The magnetic heat unit (100) can cool the heat transfer fluid by utilizing the magnetic heat effect. The magnetic heat unit (100) may be referred to as a magnetic heat device, a magnetic heat module, a magnetic heat body, etc. The magnetic heat unit (100) may be referred to as an AMR bed (Active Magnetic Regenerator bed).

[0067] The magnetic heat unit (100) may include a magnetic heat material (110). The magnetic heat material (110) is a material capable of utilizing the magnetic heat effect. In response to the application of a magnetic field, the magnetic heat material (110) may change temperature as magnetic moments within the magnetic heat material (110) align. The magnetic heat material (110) may change temperature based on the magnetic field.

[0068] For example, the magnetic calorimetric material (110) may include materials having a magnetic calorimetric effect, such as gadolinium, iron-based alloys, or rare earth metal alloys. However, the present disclosure is not limited to the examples described above, and the magnetic calorimetric material (110) may include various materials having a magnetic calorimetric effect.

[0069] The magnetothermal material (110) may be composed of a plurality of magnetothermal blocks (110a, 110b, 110c, 110d, 110e, 110f). Each of the plurality of magnetothermal blocks (110a, 110b, 110c, 110d, 110e, 110f) may be made of a material capable of utilizing the magnetothermal effect. Each of the plurality of magnetothermal blocks (110a, 110b, 110c, 110d, 110e, 110f) may have a porous structure.

[0070] Multiple magnetic heat blocks (110a, 110b, 110c, 110d, 110e, 110f) may have different Curie temperatures. Multiple magnetic heat blocks (110a, 110b, 110c, 110d, 110e, 110f) having different Curie temperatures may be heated or cooled to different temperatures depending on the application or removal of a magnetic field. That is, by including multiple magnetic heat blocks (110a, 110b, 110c, 110d, 110e, 110f) having different Curie temperatures in the magnetic heat material (110), the temperature range of the magnetic heat material (110) can be widened. The temperature range of the heat transfer fluid flowing through the magnetic heat material (110) can also be widened. Ultimately, the magnetic heat effect of the magnetic heat material (110) can be increased.

[0071] A plurality of magnetic heat blocks (110a, 110b, 110c, 110d, 110e, 110f) may be spaced apart. This is because heat loss due to conduction may occur when magnetic heat blocks having different Curie temperatures come into contact with each other. For example, a plurality of magnetic heat blocks (110a, 110b, 110c, 110d, 110e, 110f) may be spaced apart along the direction of movement of the heat transfer fluid.

[0072] When a magnetic field is repeatedly applied to and removed from the magnetic heat unit (100), an asymmetric temperature distribution may be formed. That is, a thermal gradient may occur in the magnetic heat unit (100). As a result, one side of the magnetic heat unit (100) may form a high-temperature side (101), and the other side of the magnetic heat unit (100) may form a low-temperature side (102).

[0073] The magnetic heat unit (100) may include a case (120). The case (120) may be provided to accommodate a magnetic heat material (110). The case (120) may form an internal space, and the magnetic heat material (110) may be placed in the internal space of the case (120). A heat transfer fluid may flow in the internal space of the case (120).

[0074] The magnetic heat unit (100) may include a first port (131). The first port (131) may be formed on the high-temperature side (101) of the magnetic heat unit (100). The first port (131) may be connected to a first outlet (321) of a first fluid transfer device (300). For example, the first port (131) may be connected to the first outlet (321) of the first fluid transfer device (300) through a first connecting pipe (610).

[0075] The magnetic heat unit (100) may include a second port (132). The second port (132) may be formed on the high-temperature side (101) of the magnetic heat unit (100). The second port (132) may be connected to the first inlet (331) of the first fluid transfer device (300). For example, the second port (132) may be connected to the first inlet (331) of the first fluid transfer device (300) through a second connecting pipe (620).

[0076] The magnetic heat unit (100) may include a third port (133). The third port (133) may be formed on the low-temperature side (102) of the magnetic heat unit (100). The third port (133) may be connected to the second outlet (421) of the second fluid transfer device (300). For example, the third port (133) may be connected to the second outlet (421) of the second fluid transfer device (400) through a third connecting pipe (630).

[0077] The magnetic heat unit (100) may include a fourth port (134). The fourth port (134) may be formed on the low-temperature side (102) of the magnetic heat unit (100). The fourth port (134) may be connected to the second inlet (431) of the second fluid transfer device (300). For example, the fourth port (134) may be connected to the second inlet (431) of the second fluid transfer device (400) through a fourth connecting pipe (640).

[0078] The magnetic heat unit (100) may include a magnet (200). The magnet (200) may be placed between the first fluid transfer device (300) and the second fluid transfer device (400).

[0079] The magnet (200) may be configured to form a magnetic field. The magnet (200) may or may not apply a magnetic field to the magnetic heat unit (100). The magnet (200) may or may not apply a magnetic field to the magnetic heat material (110). The magnetic heat material (110) may be configured to be exposed to or not exposed to the magnetic field formed by the magnet (200). When the magnetic heat material (110) receives a magnetic field from the magnet (200), the temperature of the magnetic heat material (110) may increase. When the magnetic heat material (110) does not receive a magnetic field from the magnet (200), the temperature of the magnetic heat material (110) may decrease.

[0080] When the magnet (200) applies a magnetic field to the magnetic thermal material (110), it can be defined as being in the magnetic field ON state. When the magnet (200) does not apply a magnetic field to the magnetic thermal material (110), it can be defined as being in the magnetic field OFF state.

[0081] The magnet (200) may be configured to be rotatable with respect to the magnetic heat unit (100). The magnet (200) may be configured to apply a magnetic field to the magnetic heat material (110) or not apply a magnetic field to the magnetic heat material (110) as it rotates. The magnet (200) may be rotated (R) by a rotating shaft (510) to be described later.

[0082] The magnet (200) may include a first pole (210) and a second pole (220) having a polarity opposite to that of the first pole (210). A magnetic field may be formed in a direction from the first pole (210) toward the second pole (220) or from the second pole (220) toward the first pole (210).

[0083] The first fluid transfer device (300) can be connected to the high-temperature side (101) of the magnetic heat unit (100). The first fluid transfer device (300) can be configured to transfer a heat transfer fluid using centrifugal force. The first fluid transfer device (300) can supply a heat transfer fluid to the magnetic heat unit (100) using centrifugal force. The first fluid transfer device (300) can receive a heat transfer fluid discharged from the magnetic heat unit (100).

[0084] The first fluid transfer device (300) may include a first chamber (311). The first chamber (311) may be configured to accommodate a heat transfer fluid. The first chamber (311) may be a predetermined space formed inside the first fluid transfer device (300).

[0085] The first chamber (311) may be configured to be rotatable with respect to the magnetic heat unit (100). As the first chamber (311) rotates, centrifugal force may be generated. The heat transfer fluid within the first chamber (311) may be discharged from the first chamber (311) toward the magnetic heat unit (100) by the centrifugal force. The first chamber (311) may be rotated (R) by a rotating shaft (510).

[0086] The first chamber (311) may include an outer portion (311a) and an inner portion (311b). The outer portion (311a) of the first chamber (311) and the inner portion (311b) of the first chamber (311) may be spaced apart along the radial direction. The outer portion (311a) of the first chamber (311) may be spaced radially outward from the inner portion (311b) of the first chamber (311). The inner portion (311b) of the first chamber (311) is a portion adjacent to the center of rotation (O, see FIG. 10 and FIG. 14), and the outer portion (311a) of the first chamber (311) may be a portion far from the center of rotation (O). The inner portion (311b) of the first chamber (311) is adjacent to the center of the first rotating frame (310), and the outer portion (311a) of the first chamber (311) may be formed on the outer part of the first rotating frame (310). The first chamber (311) may include a connecting portion (311c, see FIG. 10 and FIG. 14) connecting the outer portion (311a) and the inner portion (311b).

[0087] The first fluid transfer device (300) may include a first rotating frame (310). A first chamber (311) may be formed in the first rotating frame (310). A detailed description of the first rotating frame (310) will be provided later.

[0088] The first fluid transfer device (300) may include a first outlet (321). The first outlet (321) may be configured to be connectable to the first chamber (311). The first outlet (321) may be configured to be connectable to the outer portion (311a) of the first chamber (311). The first outlet (321) may be configured to be optionally in communication with the first chamber (311). Depending on the mode of the magnetic cooling device (30), the first outlet (321) may be provided to be in communication with or not in communication with the outer portion (311a) of the first chamber (311). While the first chamber (311) is rotatable with respect to the magnetic heat unit (100), the first outlet (321) may be maintained in a fixed state without rotating with respect to the magnetic heat unit (100). As a result, depending on the rotation of the first chamber (311), the first outlet (321) may be connected to or blocked from the outer part (311a) of the first chamber (311). If the first outlet (321) is connected to the first chamber (311), the first outlet (321) can be defined as being open. If the first outlet (321) is not connected to the first chamber (311), the first outlet (321) can be defined as being closed.

[0089] The first fluid transfer device (300) may include a first fixed frame (320). A first outlet (321) may be formed in the first fixed frame (320). A detailed description of the first fixed frame (320) will be provided later.

[0090] The first fluid transfer device (300) may include a first inlet (331). The first inlet (331) may be configured to be connectable to the first chamber (311). The first inlet (331) may be configured to be connectable to the inner portion (311b) of the first chamber (311). The first inlet (331) may be configured to be optionally connected to the first chamber (311). Depending on the mode of the magnetic cooling device (30), the first inlet (331) may be configured to be connected to or not connected to the inner portion (311b) of the first chamber (311). While the first chamber (311) is rotatable relative to the magnetic heat unit (100), the first inlet (331) may be maintained in a fixed state without rotating relative to the magnetic heat unit (100). As a result, depending on the rotation of the first chamber (311), the first inlet (331) may be connected to or blocked from the inner part (311b) of the first chamber (311). If the first inlet (331) is connected to the first chamber (311), the first inlet (331) can be defined as being open. If the first inlet (331) is not connected to the first chamber (311), the first inlet (331) can be defined as being closed.

[0091] The first fluid transfer device (300) may include a second fixed frame (330). A first inlet (331) may be formed in the second fixed frame (330). A detailed description of the second fixed frame (330) will be provided later.

[0092] The second fluid transfer device (400) can be connected to the low-temperature side (102) of the magnetic heat unit (100). The second fluid transfer device (400) can be configured to transfer a heat transfer fluid using centrifugal force. The second fluid transfer device (400) can supply a heat transfer fluid to the magnetic heat unit (100) using centrifugal force. The second fluid transfer device (400) can receive a heat transfer fluid discharged from the magnetic heat unit (100).

[0093] The second fluid transfer device (400) may include a second chamber (411). The second chamber (411) may be configured to accommodate a heat transfer fluid. The second chamber (411) may be a predetermined space formed inside the second fluid transfer device (400).

[0094] The second chamber (411) may be configured to be rotatable with respect to the magnetic heat unit (100). As the second chamber (411) rotates, centrifugal force may be generated. The heat transfer fluid within the second chamber (411) may be discharged from the second chamber (411) toward the magnetic heat unit (100) by the centrifugal force. The second chamber (411) may be rotated (R) by a rotating shaft (510).

[0095] The second chamber (411) may include an outer portion (411a) and an inner portion (411b). The outer portion (411a) of the second chamber (411) and the inner portion (411b) of the second chamber (411) may be spaced apart along the radial direction. The outer portion (411a) of the second chamber (411) may be spaced radially outward from the inner portion (411b) of the second chamber (411). The inner portion (411b) of the second chamber (411) is a portion adjacent to the center of rotation (O, see FIG. 11 and FIG. 15) of the second chamber (411), and the outer portion (411a) of the second chamber (411) may be a portion far from the center of rotation of the second chamber (411). The inner portion (411b) of the second chamber (411) is adjacent to the center of the second rotating frame (410), and the outer portion (411a) of the second chamber (411) may be formed on the outer edge of the second rotating frame (410). The second chamber (411) may include a connecting portion (411c, see FIG. 11 and FIG. 15) connecting the outer portion (411a) and the inner portion (411b).

[0096] The second fluid transfer device (400) may include a second rotating frame (410). A second chamber (411) may be formed in the second rotating frame (410). A detailed description of the second rotating frame (410) will be provided later.

[0097] The second fluid transfer device (400) may include a second outlet (421). The second outlet (421) may be configured to be connectable to the second chamber (411). The second outlet (421) may be configured to be connectable to the outer portion (411a) of the second chamber (411). The second outlet (421) may be configured to be optionally in communication with the second chamber (411). Depending on the mode of the magnetic cooling device (30), the second outlet (421) may be provided to be in communication with or not in communication with the outer portion (411a) of the second chamber (411). While the second chamber (411) is rotatable with respect to the magnetic heat unit (100), the second outlet (421) may be maintained in a fixed state without rotating with respect to the magnetic heat unit (100). As a result, depending on the rotation of the second chamber (411), the second outlet (421) may be connected to or blocked from the outer part (411a) of the second chamber (411). If the second outlet (421) is connected to the second chamber (411), the second outlet (421) can be defined as being open. If the second outlet (421) is not connected to the second chamber (411), the second outlet (421) can be defined as being closed.

[0098] The second fluid transfer device (400) may include a third fixed frame (420). A second outlet (421) may be formed in the third fixed frame (420). A detailed description of the third fixed frame (420) will be provided later.

[0099] The second fluid transfer device (400) may include a second inlet (431). The second inlet (431) may be configured to be connectable to the second chamber (411). The second inlet (431) may be configured to be connectable to the inner portion (411b) of the second chamber (411). The second inlet (431) may be configured to be optionally connected to the second chamber (411). Depending on the mode of the magnetic cooling device (30), the second inlet (431) may be configured to be connected to or not connected to the inner portion (411b) of the second chamber (411). While the second chamber (411) is rotatable relative to the magnetic heat unit (100), the second inlet (431) may be maintained in a fixed state without rotating relative to the magnetic heat unit (100). As a result, depending on the rotation of the second chamber (411), the second inlet (431) may be connected to or blocked from the inner part (411b) of the second chamber (411). If the second inlet (431) is connected to the second chamber (411), the second inlet (431) can be defined as being open. If the second inlet (431) is not connected to the second chamber (411), the second inlet (431) can be defined as being closed.

[0100] The second fluid transfer device (400) may include a fourth fixed frame (430). A second inlet (431) may be formed in the fourth fixed frame (430). A detailed description of the fourth fixed frame (430) will be provided later.

[0101] The rotation of the magnet (200), the first chamber (311), and the second chamber (411) can be configured to be synchronized. The magnet (200), the first chamber (311), and the second chamber (411) can be arranged to rotate together. For example, the magnet (200), the first chamber (311), and the second chamber (411) can rotate in the same direction of rotation and at the same rotational speed.

[0102] The magnetic cooling device (30) may include a rotating shaft (510). The rotating shaft (510) may be configured to transmit rotational force to the magnet (200), the first fluid transfer device (300), and the second fluid transfer device (400). The rotating shaft (510) may be configured to rotate the magnet (200), the first chamber (311), and the second chamber (411) together. As the rotating shaft (510) rotates (R), the magnet (200), the first chamber (311), and the second chamber (411) may rotate.

[0103] The first fluid transfer device (300), the magnet (200), and the second fluid transfer device (400) may be arranged along the longitudinal direction (L) of the rotating shaft (510). The first fluid transfer device (300) and the second fluid transfer device (400) may be positioned with the magnet (200) in between.

[0104] The self-cooling device (30) may include a first sealing member (340) disposed between a first fixed frame (320) and a second fixed frame (330). The first sealing member (340) can prevent / reduce the leakage of heat transfer fluid within the first fluid transfer device (300) into the gap between the first fixed frame (320) and the second fixed frame (330).

[0105] The self-cooling device (30) may include a second sealing member (350) disposed on the outer surface of the rotating shaft (510). The second sealing member (350) can prevent / reduce the leakage of heat transfer fluid within the first fluid transfer device (300) into the gap between the first fluid transfer device (300) and the rotating shaft (510).

[0106] The self-cooling device (30) may include a third sealing member (440) disposed between the third fixed frame (420) and the fourth fixed frame (430). The third sealing member (440) can prevent / reduce the leakage of heat transfer fluid within the second fluid transfer device (400) into the gap between the third fixed frame (420) and the fourth fixed frame (430).

[0107] The self-cooling device (30) may include a fourth sealing member (450) disposed on the outer surface of the rotating shaft (510). The fourth sealing member (450) can prevent / reduce the leakage of heat transfer fluid within the second fluid transfer device (400) into the gap between the second fluid transfer device (400) and the rotating shaft (510).

[0108] The magnetic cooling device (30) may include a first connecting pipe (610). The first connecting pipe (610) may connect a first port (131) of the magnetic heat unit (100) and a first outlet (321) of the first fluid transfer device (300). The first connecting pipe (610) may guide a heat transfer fluid between the magnetic heat unit (100) and the first fluid transfer device (300).

[0109] The magnetic cooling device (30) may include a second connecting pipe (620). The second connecting pipe (620) may connect the second port (132) of the magnetic heat unit (100) and the first inlet (331) of the first fluid transfer device (300). The second connecting pipe (620) may guide a heat transfer fluid between the magnetic heat unit (100) and the first fluid transfer device (300).

[0110] The magnetic cooling device (30) may include a third connecting pipe (630). The third connecting pipe (630) may connect the third port (133) of the magnetic heat unit (100) and the second outlet (421) of the second fluid transfer device (400). The third connecting pipe (630) may guide a heat transfer fluid between the magnetic heat unit (100) and the second fluid transfer device (400).

[0111] The magnetic cooling device (30) may include a fourth connecting pipe (640). The fourth connecting pipe (640) may connect the fourth port (134) of the magnetic heat unit (100) and the second inlet (431) of the second fluid transfer device (400). The fourth connecting pipe (640) may guide a heat transfer fluid between the magnetic heat unit (100) and the second fluid transfer device (400).

[0112] FIG. 4 is a perspective view of a rotary shaft, a first fluid transfer device, and a second fluid transfer device according to one embodiment of the present disclosure. FIG. 5 is an exploded view of a rotary shaft, a first fluid transfer device, and a second fluid transfer device according to one embodiment of the present disclosure.

[0113] Referring to FIGS. 4 and 5, the rotating shaft (510) may be configured to be couplingable to the first fluid transfer device (300) and the second fluid transfer device (400). For example, the rotating shaft (510) may be coupled to the center of the first fluid transfer device (300) and the center of the second fluid transfer device (400). The first fluid transfer device (300) and the second fluid transfer device (400) may be spaced apart along the longitudinal direction (L) of the rotating shaft (510).

[0114] The first fluid transfer device (300) may include a first rotating frame (310), a first fixed frame (320), and a second fixed frame (330). For example, the first rotating frame (310) may be surrounded by the first fixed frame (320) and the second fixed frame (330) so as not to be exposed outside the first fluid transfer device (300).

[0115] The first rotating frame (310) may include a first chamber (311). The first chamber (311) may be formed by penetrating a part of the first rotating frame (310).

[0116] For example, the first rotating frame (310) may include a plurality of first chambers (311). The plurality of first chambers (311) may be spaced apart along the circumferential direction. Each of the plurality of first chambers (311) may include an outer portion (311a) and an inner portion (311b). Each of the plurality of first chambers (311) may include a connecting portion (311c). However, according to the present disclosure, there is no limitation on the number of first chambers (311), and the first rotating frame (310) may include a single first chamber (311).

[0117] The first rotating frame (310) may be configured to be rotatable. The first rotating frame (310) may be coupled to a rotating shaft (510) and configured to rotate by the rotating shaft (510). Accordingly, the first chamber (311) formed in the first rotating frame (310) may also be configured to rotate by the rotating shaft (510).

[0118] The first rotating frame (310) may include a first shaft coupling portion (312) to which a rotating shaft (510) is coupled. The first shaft coupling portion (312) may be formed at the center of the first rotating frame (310).

[0119] The first fixed frame (320) may be configured to accommodate the first rotating frame (310). The first fixed frame (320) may form a first receiving space (322) in which the first rotating frame (310) can be placed. For example, the first fixed frame (320) may include a first body portion (324) and a first side wall portion (325) extending from an edge portion of the first body portion (324). The first body portion (324) may have a roughly disc shape, and the first side wall portion (325) may have a hollow cylindrical shape. The first receiving space (322) may be a space defined by the first body portion (324) and the first side wall portion (325).

[0120] The first fixed frame (320) may include a first outlet (321). The first outlet (321) may be formed by penetrating a portion of the first fixed frame (320). The first outlet (321) may be formed in the first side wall portion (325). The first outlet (321) may extend radially.

[0121] For example, the first fluid transfer device (300) may include a plurality of first outlets (321). The plurality of first outlets (321) may be spaced apart along the circumferential direction. Each of the plurality of first outlets (321) may be configured to be connectable to each of the outer portions (311a) of the plurality of first chambers (311). The plurality of first outlets (321) and the plurality of first chambers (311) may be arranged to correspond one-to-one.

[0122] The first fixed frame (320) may be configured not to rotate. The first fixed frame (320) may support the first rotating frame (310) which rotates by the rotating shaft (510).

[0123] The first fixed frame (320) may include a second shaft coupling portion (323) to which a rotating shaft (510) is coupled. The second shaft coupling portion (323) may be formed at the center of the first fixed frame (320).

[0124] The second fixed frame (330) may be configured to cover the first rotating frame (310) that is accommodated in the first fixed frame (320). For example, the second fixed frame (330) may include a roughly disc shape.

[0125] The second fixed frame (330) may include a first inlet (331). The first inlet (331) may be formed by penetrating a portion of the second fixed frame (330). The first inlet (331) may have a shape that extends in the radial direction.

[0126] For example, the first fluid transfer device (300) may include a plurality of first inlets (331). The plurality of first inlets (331) may be spaced apart along the circumferential direction. Each of the plurality of first inlets (331) may be configured to be connectable to each of the inner portions (311b) of the plurality of first chambers (311). The plurality of first inlets (331) and the plurality of first chambers (311) may be arranged to correspond one-to-one.

[0127] The second fixed frame (330) may be configured not to rotate. The second fixed frame (330) may support the first rotating frame (310) which rotates by the rotating shaft (510).

[0128] The second fixed frame (330) may include a third shaft coupling portion (332) to which a rotating shaft (510) is coupled. The third shaft coupling portion (332) may be formed at the center of the second fixed frame (330).

[0129] The second fluid transfer device (400) may include a second rotating frame (410), a third fixed frame (420), and a fourth fixed frame (430). For example, the second rotating frame (410) may be surrounded by the third fixed frame (420) and the fourth fixed frame (430) so as not to be exposed outside the second fluid transfer device (400).

[0130] The second rotating frame (410) may include a second chamber (411). The second chamber (411) may be formed by penetrating a part of the second rotating frame (410).

[0131] For example, the second rotating frame (410) may include a plurality of second chambers (411). The plurality of second chambers (411) may be spaced apart along the circumferential direction. Each of the plurality of second chambers (411) may include an outer portion (411a) and an inner portion (411b). Each of the plurality of second chambers (411) may include a connecting portion (411c). However, according to the present disclosure, there is no limitation on the number of second chambers (411), and the second rotating frame (410) may include a single second chamber (411).

[0132] The second rotating frame (410) may be configured to be rotatable. The second rotating frame (410) may be coupled to a rotating shaft (510) and configured to rotate by the rotating shaft (510). Accordingly, the second chamber (411) formed in the second rotating frame (410) may also be configured to rotate by the rotating shaft (510).

[0133] The second rotating frame (410) may include a fourth shaft coupling part (412) to which a rotating shaft (510) is coupled. The fourth shaft coupling part (412) may be formed at the center of the second rotating frame (410).

[0134] The third fixed frame (420) may be configured to accommodate the second rotating frame (410). The third fixed frame (420) may form a second receiving space (422) in which the second rotating frame (410) can be placed. For example, the third fixed frame (420) may include a second body portion (424) and a second side wall portion (425) extending from the edge portion of the second body portion (424). The second body portion (424) may have a roughly disc shape, and the second side wall portion (425) may have a hollow cylindrical shape. The second receiving space (422) may be a space defined by the second body portion (424) and the second side wall portion (425).

[0135] The third fixed frame (420) may include a second outlet (421). The second outlet (421) may be formed by penetrating a portion of the third fixed frame (420). The second outlet (421) may be formed in the second side wall portion (425). The second outlet (421) may extend radially.

[0136] For example, the second fluid transfer device (400) may include a plurality of second outlets (421). The plurality of second outlets (421) may be spaced apart along the circumferential direction. Each of the plurality of second outlets (421) may be configured to be connectable to each of the outer portions (411a) of the plurality of second chambers (411). The plurality of second outlets (421) and the plurality of second chambers (411) may be arranged to correspond one-to-one.

[0137] The third fixed frame (420) may be configured not to rotate. The third fixed frame (420) may support the second rotating frame (410) which rotates by the rotating shaft (510).

[0138] The third fixed frame (420) may include a fifth shaft coupling part (423) to which a rotating shaft (510) is coupled. The fifth shaft coupling part (423) may be formed at the center of the third fixed frame (420).

[0139] The fourth fixed frame (430) may be configured to cover the second rotating frame (410) that is accommodated in the third fixed frame (420). For example, the fourth fixed frame (430) may include a roughly disc shape.

[0140] The fourth fixed frame (430) may include a second inlet (431). The second inlet (431) may be formed by penetrating a portion of the fourth fixed frame (430). The second inlet (431) may have a shape that extends radially.

[0141] For example, the second fluid transfer device (400) may include a plurality of second inlets (431). The plurality of second inlets (431) may be spaced apart along the circumferential direction. Each of the plurality of second inlets (431) may be configured to be connectable to each of the inner portions (411b) of the plurality of second chambers (411). The plurality of second inlets (431) and the plurality of second chambers (411) may be arranged to correspond one-to-one.

[0142] The fourth fixed frame (430) may be configured not to rotate. The fourth fixed frame (430) may support the second rotating frame (410) which rotates by the rotating shaft (510).

[0143] The fourth fixed frame (430) may include a sixth shaft coupling part (432) to which a rotating shaft (510) is coupled. The sixth shaft coupling part (432) may be formed at the center of the fourth fixed frame (430).

[0144] FIG. 6 is a control block diagram of a magnetic cooling device according to one embodiment of the present disclosure.

[0145] Referring to FIG. 6, a magnetic cooling device (30) according to one embodiment of the present disclosure may include a control unit (700), a driving device (500), a magnet (200), a first fluid transfer device (300), and a second fluid transfer device (400).

[0146] A magnetic cooling device (30) according to one embodiment of the present disclosure may not include some of the configurations shown in FIG. 6. A magnetic cooling device (30) according to one embodiment of the present disclosure may include additional configurations other than those shown in FIG. 6.

[0147] The control unit (700) can control the operation of the magnetic cooling device (30). The control unit (700) can be electrically connected to various components of the magnetic cooling device (30). The control unit (700) can control various components of the magnetic cooling device (30), such as a driving device (500).

[0148] The control unit (700) may include hardware such as a CPU, a Micom, or memory, and software such as a control program. For example, the control unit (700) may include at least one memory (720) that stores data in the form of an algorithm or program for controlling the operation of the components of the magnetic cooling device (30). For example, the control unit (700) may include at least one processor (710) that performs operations using data stored in at least one memory (720). The memory (720) and the processor (710) may each be implemented as separate chips. The processor (710) may include one or more processor chips or one or more processing cores. The memory (720) may include one or more memory chips or one or more memory blocks. Additionally, the memory (720) and the processor (710) may be implemented as a single chip.

[0149] The driving device (500) can generate a driving force and provide it to the magnet (200), the first fluid transfer device (300), and / or the second fluid transfer device (400). The driving device (500) may be configured to rotate the magnet (200), the first chamber (311) of the first fluid transfer device (300), and / or the second chamber (411) of the second fluid transfer device (400). The driving device (500) may be configured to rotate the magnet (200), the first rotating frame (310) of the first fluid transfer device (300), and / or the second rotating frame (410) of the second fluid transfer device (400).

[0150] The driving device (500) may include a motor (520) that generates rotational force. The driving device (500) may include a rotating shaft (510) configured to transmit rotational force to a magnet (200), a first fluid transfer device (300), and a second fluid transfer device (400).

[0151] The control unit (700) can control the driving device (500). The control unit (700) can control the driving device (500) based on the modes of the magnetic cooling device (30) (a first mode (M1) and a second mode (M2) to be described later). The control unit (700) can control the driving device (500) so that the magnet (200), the first chamber (311), and the second chamber (411) rotate in synchronization. For example, the control unit (700) can control the on / off, rotation speed, and rotation direction of the driving device (500).

[0152] According to one embodiment of the present disclosure, a driving device (500) can rotate the magnet (200), the first chamber (311) of the first fluid transfer device (300), and the second chamber (411) of the second fluid transfer device (400) together. In other words, the magnetic cooling device (30) according to one embodiment of the present disclosure may not include a plurality of driving devices to rotate the magnet (200), the first chamber (311), and the second chamber (411) respectively. Accordingly, no additional power source is required for the operation of the magnetic cooling device (30), thereby saving energy. In addition, the rotation of the magnet (200), the first chamber (311), and the second chamber (411) can be synchronized more easily.

[0153] FIG. 7 is a table showing an example of the operation of a magnetic cooling device according to one embodiment of the present disclosure. FIG. 8 schematically illustrates the state in which a magnetic cooling device according to one embodiment of the present disclosure operates in a first mode. FIG. 9 schematically illustrates a magnetic heat unit and a magnet in the first mode of a magnetic cooling device according to one embodiment of the present disclosure. FIG. 10 schematically illustrates a first fluid transfer device in the first mode of a magnetic cooling device according to one embodiment of the present disclosure. FIG. 11 schematically illustrates a second fluid transfer device in the first mode of a magnetic cooling device according to one embodiment of the present disclosure. FIG. 12 schematically illustrates the state in which a magnetic cooling device according to one embodiment of the present disclosure operates in a second mode. FIG. 13 schematically illustrates a magnetic heat unit and a magnet in the second mode of a magnetic cooling device according to one embodiment of the present disclosure. FIG. 14 schematically illustrates a first fluid transfer device in the second mode of a magnetic cooling device according to one embodiment of the present disclosure. FIG. 15 schematically illustrates a second fluid transfer device in the second mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0154] A magnetic cooling device (30) according to one embodiment of the present disclosure may operate in a first mode (M1) or a second mode (M2). The magnetic cooling device (30) may be configured to be switchable between the first mode (M1) and the second mode (M2). The magnetic cooling device (30) may switch from the first mode (M1) to the second mode (M2) or switch from the second mode (M2) to the first mode (M1). The mode of the magnetic cooling device (30) may be changed periodically. The mode of the magnetic cooling device (30) may be changed periodically by the rotation of the magnet (200), the first chamber (311), and the second chamber (411).

[0155] Referring to FIGS. 7 through 11, the magnetic cooling device (30) can operate in a first mode (M1). When the magnetic cooling device (30) operates in the first mode (M1), the heat transfer fluid cooled by the magnetic heat unit (100) can move in a first direction (A). Based on the magnetic cooling device (30) operating in the first mode (M1), the first fluid transfer device (300) can supply the heat transfer fluid to the magnetic heat unit (100). Based on the magnetic cooling device (30) operating in the first mode (M1), the magnetic heat unit (100) can cool the heat transfer fluid. Based on the magnetic cooling device (30) operating in the first mode (M1), the second fluid transfer device (400) can receive the heat transfer fluid from the magnetic heat unit (100).

[0156] Referring to FIGS. 8 and 9, while the magnetic cooling device (30) is operating in the first mode (M1), the magnet (200) may not apply a magnetic field to the magnetic heat material (110). That is, during the first mode (M1) of the magnetic cooling device (30), the magnetic field may be in the OFF state. At this time, the temperature of the heat transfer fluid passing through the magnetic heat material (110) may decrease.

[0157] Referring to FIGS. 8 and FIGS. 10, while the magnetic cooling device (30) is operating in a first mode (M1), the first chamber (311) may be connected to a first outlet (321). While the magnetic cooling device (30) is operating in a first mode (M1), the outer portion (311a) of the first chamber (311) may be in communication with the first outlet (321). That is, the first outlet (321) may be in an open state. Due to the centrifugal force generated as the first chamber (311) rotates, the heat transfer fluid within the first chamber (311) may flow toward the first outlet (321) (see the dashed arrow in FIG. 10). The first outlet (321) may be provided to guide the heat transfer fluid discharged from the first chamber (311) toward the magnetic heat quantity unit (100). The first connecting pipe (610) may be provided to guide the heat transfer fluid coming from the first outlet (321) to the first port (131).

[0158] Referring to FIGS. 8 and 10, while the magnetic cooling device (30) is operating in a first mode (M1), the first chamber (311) may not be connected to the first inlet (331). While the magnetic cooling device (30) is operating in a first mode (M1), the inner portion (311b) of the first chamber (311) may not be in communication with the first inlet (331). The heat transfer fluid may not flow between the inner portion (311b) of the first chamber (311) and the first inlet (331). That is, the first inlet (331) may be closed.

[0159] Referring to FIGS. 8 and FIGS. 11, while the magnetic cooling device (30) is operating in the first mode (M1), the second chamber (411) may not be connected to the second outlet (421). While the magnetic cooling device (30) is operating in the first mode (M1), the outer part (411a) of the second chamber (411) may not be in communication with the second outlet (421). The heat transfer fluid may not flow between the outer part (411a) of the second chamber (411) and the second outlet (421). That is, the second outlet (421) may be closed.

[0160] Referring to FIGS. 8 and FIGS. 11, while the magnetic cooling device (30) is operating in a first mode (M1), the second chamber (411) can be connected to the second inlet (431). While the magnetic cooling device (30) is operating in a first mode (M1), the inner portion (411b) of the second chamber (411) can be in communication with the second inlet (431). That is, the second inlet (431) can be in an open state. With the second chamber (411) and the second inlet (431) in communication, the heat transfer fluid flowing out from the magnetic heat unit (100) can flow toward the second chamber (411) through the second inlet (431) (see dashed arrow in FIG. 11). The second inlet (431) may be provided to guide the heat transfer fluid discharged from the magnetic heat unit (100) toward the second chamber (411). The fourth connecting pipe (640) may be provided to guide the heat transfer fluid coming from the fourth port (134) to the second inlet (431).

[0161] According to one embodiment of the present disclosure, while the magnetic cooling device (30) is operating in a first mode (M1), the heat transfer fluid flowing out from the first chamber (311) through the first outlet (321) may pass through the magnetic heat unit (100) and flow into the second chamber (411) through the second inlet (431). For example, while the magnetic cooling device (30) is operating in a first mode (M1), the heat transfer fluid in the first chamber (311) may pass through the first outlet (321), the first connecting pipe (610), the first port (131), the magnetic heat material (110), the fourth port (134), the fourth connecting pipe (640), and the second inlet (431), and then flow into the second chamber (411).

[0162] Referring to FIG. 7 and FIG. 12 through FIG. 15, the magnetic cooling device (30) can operate in a second mode (M2). When the magnetic cooling device (30) operates in the second mode (M2), the heat transfer fluid heated by the magnetic heat unit (100) can move in a second direction (B) opposite to the first direction (A). Based on the magnetic cooling device (30) operating in the second mode (M2), the second fluid transfer device (400) can supply the heat transfer fluid to the magnetic heat unit (100). Based on the magnetic cooling device (30) operating in the second mode (M2), the magnetic heat unit (100) can heat the heat transfer fluid. Based on the magnetic cooling device (30) operating in the second mode (M2), the first fluid transfer device (300) can receive the heat transfer fluid from the magnetic heat unit (100).

[0163] Referring to FIGS. 12 and 13, while the magnetic cooling device (30) is operating in a second mode (M2), the magnet (200) can apply a magnetic field to the magnetic heat material (110). That is, during the second mode (M2) of the magnetic cooling device (30), the magnetic field may be in an ON state. At this time, the temperature of the heat transfer fluid passing through the magnetic heat material (110) may rise.

[0164] Referring to FIGS. 12 and 14, while the magnetic cooling device (30) is operating in a second mode (M2), the first chamber (311) may not be connected to the first outlet (321). While the magnetic cooling device (30) is operating in a second mode (M2), the outer portion (311a) of the first chamber (311) may not be in communication with the first outlet (321). The heat transfer fluid may not flow between the outer portion (311a) of the first chamber (311) and the first outlet (321). That is, the first outlet (321) may be closed.

[0165] Referring to FIGS. 12 and 14, while the magnetic cooling device (30) is operating in a second mode (M2), the first chamber (311) can be connected to the first inlet (331). While the magnetic cooling device (30) is operating in a second mode (M2), the inner portion (311b) of the first chamber (311) can be in communication with the first inlet (331). That is, the first inlet (331) can be in an open state. With the first chamber (311) and the first inlet (331) in communication, the heat transfer fluid flowing out from the magnetic heat unit (100) can flow into the first chamber (311) through the first inlet (331) (see dashed arrow in FIG. 14). The first inlet (331) may be provided to guide the heat transfer fluid discharged from the magnetic heat unit (100) toward the first chamber (311). The second connecting pipe (620) may be provided to guide the heat transfer fluid coming from the second port (132) to the first inlet (331).

[0166] Referring to FIGS. 12 and 15, while the magnetic cooling device (30) is operating in a second mode (M2), the second chamber (411) may be connected to a second outlet (421). While the magnetic cooling device (30) is operating in a second mode (M2), the outer portion (411a) of the second chamber (411) may be in communication with the second outlet (421). That is, the second outlet (421) may be in an open state. Due to the centrifugal force generated as the second chamber (411) rotates, the heat transfer fluid within the second chamber (411) may flow toward the second outlet (421) (see the dashed arrow in FIG. 15). The second outlet (421) may be provided to guide the heat transfer fluid discharged from the second chamber (411) toward the magnetic heat quantity unit (100). A third connecting pipe (630) may be provided to guide the heat transfer fluid coming from the second outlet (421) to the third port (133).

[0167] Referring to FIGS. 12 and 15, while the magnetic cooling device (30) is operating in a second mode (M2), the second chamber (411) may not be connected to the second inlet (431). While the magnetic cooling device (30) is operating in a second mode (M2), the inner part (411b) of the second chamber (411) may not be in communication with the second inlet (431). The heat transfer fluid may not flow between the inner part (411b) of the second chamber (411) and the second inlet (431). That is, the second inlet (431) may be closed.

[0168] According to one embodiment of the present disclosure, while the magnetic cooling device (30) is operating in a second mode (M2), the heat transfer fluid flowing out from the second chamber (411) through the second outlet (421) may pass through the magnetic heat unit (100) and flow into the first chamber (311) through the first inlet (331). For example, while the magnetic cooling device (30) is operating in a second mode (M2), the heat transfer fluid in the second chamber (411) may pass through the second outlet (421), the third connecting pipe (630), the third port (133), the magnetic heat material (110), the second port (132), the second connecting pipe (620), and the first inlet (331), and then flow into the first chamber (311).

[0169] According to one embodiment of the present disclosure, the first chamber (311) may be configured to communicate with either the first outlet (321) or the first inlet (331) as it rotates (see FIG. 10 and FIG. 14). That is, it may be configured so that when the first outlet (321) is opened, the first inlet (331) is closed, and conversely, when the first outlet (321) is closed, the first inlet (331) is opened. Accordingly, the open and closed states of the first outlet (321) and the first inlet (331) can be synchronized in opposite directions, and the mode switching of the magnetic cooling device (30) can be performed quickly. In addition, during the first mode (M1) of the magnetic cooling device (30), the first fluid transfer device (300) can supply a more uniform amount of heat transfer fluid to the magnetic heat quantity unit (100).

[0170] According to one embodiment of the present disclosure, the outer part (311a) of the first chamber (311) and the inner part (311b) of the first chamber (311) may be configured to have the same angular range with respect to the center of rotation (O) (see FIG. 10 and FIG. 14). For example, the outer part (311a) of the first chamber (311) and the inner part (311b) of the first chamber (311) may be configured to have the same central angle (C1). For example, the outer part (311a) of the first chamber (311) is positioned radially outward from the inner part (311b) of the first chamber (311), and the circumferential length of the outer part (311a) of the first chamber (311) may be longer than the circumferential length of the inner part (311b) of the first chamber (311). Thus, the flow rate of the heat transfer fluid supplied to the magnetic heat unit (100) during the first mode (M1) of the magnetic cooling device (30) can be increased.

[0171] According to one embodiment of the present disclosure, the second chamber (411) may be configured to communicate with either the second outlet (421) or the second inlet (431) as it rotates (see FIG. 11 and FIG. 15). That is, it may be configured so that when the second outlet (421) is opened, the second inlet (431) is closed, and conversely, when the second outlet (421) is closed, the second inlet (431) is opened. Accordingly, the open and closed states of the second outlet (421) and the second inlet (431) can be synchronized in opposite directions, and the mode switching of the magnetic cooling device (30) can be performed quickly. In addition, during the second mode (M2) of the magnetic cooling device (30), the second fluid transfer device (400) can supply a more uniform amount of heat transfer fluid to the magnetic heat quantity unit (100).

[0172] According to one embodiment of the present disclosure, the outer portion (411a) of the second chamber (411) and the inner portion (411b) of the second chamber (411) may be configured to have the same angular range with respect to the center of rotation (O) (see FIG. 11 and FIG. 15). For example, the outer portion (411a) of the second chamber (411) and the inner portion (411b) of the second chamber (411) may be configured to have the same central angle (C2). For example, the outer portion (411a) of the second chamber (411) is positioned radially outward from the inner portion (411b) of the second chamber (411), and the circumferential length of the outer portion (411a) of the second chamber (411) may be longer than the circumferential length of the inner portion (411b) of the second chamber (411). Thus, the flow rate of the heat transfer fluid supplied to the magnetic heat unit (100) during the second mode (M2) of the magnetic cooling device (30) can be increased.

[0173] According to one embodiment of the present disclosure, the first chamber (311) and the magnet (200) of the first fluid transfer device (300) may not be arranged to correspond along the longitudinal direction (L) of the rotating shaft (510). The first chamber (311) and the magnet (200) of the first fluid transfer device (300) may be arranged staggered. For example, it is assumed that there are four magnets (200) and four first chambers (311) each, and an arrangement area that is evenly divided into eight sections based on 360 degrees. While the magnet (200) is placed in the odd-numbered sections (1st section (S1): 0–45 degrees, 3rd section (S3): 90–135 degrees, 5th section (S5): 180–225 degrees, 7th section (S7): 270–315 degrees), the first chamber (311) may be placed to correspond to the even-numbered sections (2nd section (S2): 45–90 degrees, 4th section (S2): 135–180 degrees, 6th section (S6): 225–270 degrees, 8th section (S8): 315–360 degrees). Conversely, while the magnet (200) is placed in the even-numbered sections, the first chamber (311) may be placed to correspond to the odd-numbered sections.

[0174] According to one embodiment of the present disclosure, the second chamber (411) and the magnet (200) of the second fluid transfer device (400) may not be arranged to correspond along the longitudinal direction (L) of the rotating shaft (510). The second chamber (411) and the magnet (200) of the second fluid transfer device (400) may be arranged to be aligned. For example, assume that there are four magnets (200) and four second chambers (411) each, and that there is an arrangement area divided equally into eight sections based on 360 degrees. While the magnet (200) is arranged in an odd-numbered section, the second chamber (411) may be arranged to correspond to the odd-numbered section. While the magnet (200) is arranged in an even-numbered section, the second chamber (411) may be arranged to correspond to the even-numbered section.

[0175] Meanwhile, magnetic cooling devices generally include pumps and valves for the movement of heat transfer fluid. However, controlling the pressure of the pump and the on / off of the valves can be quite complex, and due to signal delays occurring during the control process, the heat transfer fluid may not be supplied uniformly to multiple magnetic heat units. In addition, noise may be generated due to the operation of the pump, and the overall structure may become complex as valves must be installed at each port of the multiple magnetic heat units.

[0176] In contrast, according to the present disclosure, the magnetic cooling device (30) may not include a separate pump and valve. The magnetic cooling device (30) can transfer heat transfer fluid using only a structure utilizing centrifugal force. The magnetic cooling device (30) can uniformly supply heat transfer fluid to a plurality of magnetic heat units by synchronizing the rotation of the magnet (200), the first chamber (311) of the first fluid transfer device (300), and the second chamber (411) of the second fluid transfer device (400). In addition, since the magnetic cooling device (30) does not require a pump, noise can be reduced. Since the magnetic cooling device (30) does not require a valve, the overall structure can be further simplified compared to conventional designs.

[0177] FIG. 16 schematically illustrates a first fluid transfer device in a first mode of a magnetic cooling device according to one embodiment of the present disclosure. FIG. 17 schematically illustrates a second fluid transfer device in a first mode of a magnetic cooling device according to one embodiment of the present disclosure. FIG. 18 schematically illustrates a first fluid transfer device in a second mode of a magnetic cooling device according to one embodiment of the present disclosure. FIG. 19 schematically illustrates a second fluid transfer device in a second mode of a magnetic cooling device according to one embodiment of the present disclosure.

[0178] Compared to the first fluid transfer device (300) illustrated in FIGS. 10 and 14, the first fluid transfer device (300) illustrated in FIGS. 16 and 18 may be substantially identical except for the shape of the inner part of the first chamber (311). The same reference numerals are assigned to configurations that are substantially identical to the configurations described above, and redundant descriptions may be omitted.

[0179] According to one embodiment of the present disclosure, the first chamber (311) may be configured to be optionally in communication with the first outlet (321). According to one embodiment of the present disclosure, the first chamber (311) may be configured to always be in communication with the first inlet (331).

[0180] For example, the inner portion (311bb) of the first chamber (311) may extend along the circumferential direction. The inner portion (311b) of the first chamber (311) may extend along the rotational direction. The inner portion (311b) of the first chamber (311) may include a roughly ring shape. Thus, the inner portion (311bb) of the first chamber (311) can always be connected to the first inlet (331). Additionally, if the first fluid transfer device (300) has a plurality of first inlets (331), the inner portion (311bb) of the first chamber (311) can be connected to all of the plurality of first inlets (331).

[0181] As described above, when the magnetic cooling device (30) operates in the first mode (M1), the first fluid transfer device (300) can supply heat transfer fluid to the magnetic heat unit (100) using centrifugal force. That is, the heat transfer fluid in the first chamber (311) can be subjected to a force directed radially outward by centrifugal force. The heat transfer fluid in the first chamber (311) may mostly flow toward the first outlet (321) by centrifugal force and hardly flow toward the first inlet (331). Even if the inner part (311bb) of the first chamber (311) remains in communication with the first inlet (331), it may not significantly affect the direction of movement of the heat transfer fluid. Accordingly, for example, the first chamber (311) may have a shape that is always in communication with the first inlet (331). With the shape of the first chamber (311), the fluid flow resistance can be reduced, and the structure of the first chamber (311) can be simplified.

[0182] Compared to the second fluid transfer device (400) illustrated in FIGS. 11 and 15, the second fluid transfer device (400) illustrated in FIGS. 17 and 19 may be substantially identical except for the shape of the inner part of the second chamber (411). The same reference numerals are assigned to configurations that are substantially identical to the configurations described above, and redundant descriptions may be omitted.

[0183] According to one embodiment of the present disclosure, the second chamber (411) may be configured to be optionally in communication with the second outlet (421). According to one embodiment of the present disclosure, the second chamber (411) may be configured to always be in communication with the second inlet (431).

[0184] For example, the inner portion (411bb) of the second chamber (411) may extend along the circumferential direction. The inner portion (411b) of the second chamber (411) may extend along the rotational direction. The inner portion (411b) of the second chamber (411) may include a roughly ring shape. Thus, the inner portion (411bb) of the second chamber (411) can always be connected to the second inlet (431). Additionally, if the second fluid transfer device (400) has a plurality of second inlets (431), the inner portion (411bb) of the second chamber (411) can be connected to all of the plurality of second inlets (431).

[0185] As described above, when the magnetic cooling device (30) operates in the second mode (M2), the second fluid transfer device (400) can supply heat transfer fluid to the magnetic heat unit (100) using centrifugal force. That is, the heat transfer fluid in the second chamber (411) can be subjected to a force directed radially outward by centrifugal force. The heat transfer fluid in the second chamber (411) may mostly flow toward the second outlet (421) by centrifugal force and hardly flow toward the second inlet (431). Even if the inner part (411bb) of the second chamber (411) remains in communication with the second inlet (431), it may not significantly affect the direction of movement of the heat transfer fluid. Accordingly, for example, the second chamber (411) may have a shape that is always in communication with the second inlet (431). With the shape of the second chamber (411), the fluid flow resistance can be reduced, and the structure of the second chamber (411) can be simplified.

[0186] As described above, a magnetic cooling device (30) according to one embodiment of the present disclosure may operate in a first mode (M1) or a second mode (M2). When the magnetic cooling device (30) operates in the first mode (M1), the heat transfer fluid cooled by the magnetic heat unit (100) may move in a first direction (A). While the magnetic cooling device (30) operates in the first mode (M1), the magnet (200) may not apply a magnetic field to the magnetic heat material (110). When the magnetic cooling device (30) operates in the second mode (M2), the heat transfer fluid heated by the magnetic heat unit (100) may move in a second direction (B). While the magnetic cooling device (30) operates in the second mode (M2), the magnet (200) may apply a magnetic field to the magnetic heat material (110).

[0187] Referring to FIG. 16, while the self-cooling device (30) is operating in a first mode (M1), the first chamber (311) may be in communication with the first outlet (321) and the first inlet (331). Due to the centrifugal force generated as the first chamber (311) rotates, the heat transfer fluid within the first chamber (311) may flow toward the first outlet (321) (see the dashed arrow in FIG. 16).

[0188] Referring to FIG. 17, while the magnetic cooling device (30) is operating in the first mode (M1), the second chamber (411) may be in communication with the second inlet (431) rather than the second outlet (421). The heat transfer fluid flowing out from the magnetic heat unit (100) may flow toward the second chamber (411) through the second inlet (431) (see dashed arrow in FIG. 17).

[0189] Referring to FIG. 18, while the magnetic cooling device (30) is operating in a second mode (M2), the first chamber (311) may be in communication with the first inlet (331) rather than the first outlet (321). The heat transfer fluid flowing out from the magnetic heat unit (100) may flow toward the first chamber (311) through the first inlet (331) (see dashed arrow in FIG. 18).

[0190] Referring to FIG. 19, while the self-cooling device (30) is operating in a second mode (M2), the second chamber (411) may be connected to a second outlet (421) and a second inlet (431). Due to the centrifugal force generated as the second chamber (411) rotates, the heat transfer fluid within the second chamber (411) may flow toward the second outlet (421) (see the dashed arrow in FIG. 19).

[0191] FIG. 20 is a perspective view of a refrigerator including a cooling cycle device according to one embodiment of the present disclosure. FIG. 21 is a side cross-sectional view of a refrigerator including a cooling cycle device according to one embodiment of the present disclosure. Components substantially identical to the above-described components are given the same reference numerals, and redundant descriptions may be omitted.

[0192] FIGS. 20 and 21 illustrate a refrigerator (2) as an example of a home appliance including a cooling cycle device (1).

[0193] Referring to FIGS. 20 and 21, the refrigerator (2) may include a main body (1000). The refrigerator (2) may include a storage room (2000) provided inside the main body (1000). The refrigerator (2) may include a door (3000) provided to open and close the storage room (2000). The refrigerator (2) may include a cooling cycle device (cooling system) (1) for supplying cold air to the storage room (2000).

[0194] The main body (1000) may form at least a part of the exterior of the refrigerator (2). The main body (1000) may be formed with an open front so that a user can take food into and out of the storage room (2000). The main body (1000) may include an opening. The opening of the main body (1000) may be opened and closed by a door (3000).

[0195] A door (3000) may be provided to open and close the main body (1000). A door (3000) may be provided to open and close the opening of the main body (1000). A door (3000) may be rotatably connected to the main body (1000). For example, the door (3000) may be rotatably connected to the main body (1000) by a hinge connected to the door (3000) and the main body (1000), respectively.

[0196] The door (3000) may include a door gasket (3010). The door gasket (3010) can seal the gap between the door (3000) and the main body (1000) to prevent cold air from leaking from the storage room (2000).

[0197] The door (3000) may include a door basket (3020). The door basket (3020) may be provided for storing / keeping food.

[0198] The main body (1000) may include an outer surface (1100). The outer surface (1100) may form at least a part of the exterior of the refrigerator (2). The outer surface (1100) may be provided on the outside of the interior (1200). The outer surface (1100) may be formed to have the shape of a box with an open front. For example, the outer surface (1100) may form the top surface, bottom surface, left side, right side, and rear surface of the refrigerator (2).

[0199] The main body (1000) may include an inner body (1200). The inner body (1200) may be provided on the inner side of the outer body (1100). The inner body (1200) may form a storage room (2000). The internal space of the inner body (1200) may be defined as the storage room (2000). The inner body (1200) may have a shape with an open front. The inner body (1200) may be formed to have the shape of a box with an open front.

[0200] The inner chamber (1200) may include inner walls (1210, 1220, 1230, 1240, 1250). For example, the inner chamber (1200) may include a right wall (1210), an upper wall (1220), a left wall (1230), a bottom wall (1240), and a rear wall (1250). For example, the right wall (1210), the upper wall (1220), the left wall (1230), the bottom wall (1240), and the rear wall (1250) of the inner chamber (1200) may form a storage room (2000).

[0201] The main body (1000) may include a main body insulation material (1030). The main body insulation material (1030) may be provided between the outer body (1100) and the inner body (1200). The main body insulation material (1030) may be provided so that the outer body (1100) and the inner body (1200) are insulated from each other. As the main body insulation material (1030) is foamed between the outer body (1100) and the inner body (1200), the outer body (1100) and the inner body (1200) may be bonded together. The main body insulation material (1030) can prevent heat exchange from occurring between the inside of the storage room (2000) and the outside of the main body (1000), thereby improving the cooling efficiency inside the storage room (2000).

[0202] The main body (1000) may include a storage room (2000). The storage room (2000) may be formed by an inner box (1200). For example, the inner box (1200) may have the shape of a box with an open front, and the storage room (2000) may be formed inside it. The storage room (2000) may be divided into multiple sections by partitions (5000). For example, the storage room (2000) may be divided into a refrigerator room and a freezer room by partitions (5000).

[0203] For example, the storage room (2000) may be provided with a shelf (2010) on which food can be placed and a storage container (not shown) for storing food. For example, the storage room (2000) may be provided with a drawer (2020) that can be pulled out and pulled in from the storage room (2000) through an opening of the main body (1000).

[0204] The refrigerator (2) may include a duct (4000). The duct (4000) may be provided to allow cold air to flow. The duct (4000) may form a path for cold air to flow. The duct (4000) may be provided to guide cold air. The duct (4000) may be configured to recover air inside the storage room (2000) and to supply the recovered and heat-exchanged air (i.e., cold air) to the storage room (2000). The duct (4000) may be placed inside the inner chamber (1200).

[0205] The refrigerator (2) may include a cooling cycle device (1) configured to generate cold air using a cooling cycle and supply the generated cold air to a storage room (2000). The cooling cycle device (1) may include a first heat exchanger (10), a second heat exchanger (20), and a self-cooling device (30).

[0206] For example, the first heat exchanger (10) and the self-cooling device (30) may be placed outside the inner chamber (1200), and the second heat exchanger (20) may be placed inside the inner chamber (1200). For example, the first heat exchanger (10) and the self-cooling device (30) may be placed in the machine room, and the second heat exchanger (20) may be placed in the storage room (2000).

[0207] For example, the refrigerator (2) may include a first fan (61). The first fan (61) can increase the heat exchange efficiency of the first fluid transfer device (300) and the first heat exchanger (10). The first fan (61) may be placed in a machine room.

[0208] For example, the refrigerator (2) may include a second fan (62). The second fan (62) can force cold air generated by the second heat exchanger (20) into the storage room (2000). The second fan (62) may be placed inside the inner chamber (1200).

[0209] A magnetic cooling device (30) according to one embodiment of the present disclosure may include: a magnet (200) configured to form a magnetic field; a magnetic heat unit (100) configured to allow a heat transfer fluid to flow, comprising a magnetic heat material (110) configured to change temperature by the magnetic field; a first fluid transfer device (300) connected to the high-temperature side of the magnetic heat unit and configured to transfer the heat transfer fluid using centrifugal force; and a second fluid transfer device (400) connected to the low-temperature side of the magnetic heat unit and configured to transfer the heat transfer fluid using centrifugal force. The first fluid transfer device (300) may include: a first chamber (311) configured to be rotatable with respect to the magnetic heat unit; a first outlet (321) configured to be connectable to the outer part (311a) of the first chamber; and a first inlet (331) configured to be connectable to the inner part (311b) of the first chamber. The second fluid transfer device (400) may include: a second chamber (411) configured to be rotatable with respect to the magnetic heat unit; a second outlet (421) configured to be connectable to the outer part (411a) of the second chamber; and a second inlet (431) configured to be connectable to the inner part (411b) of the second chamber.

[0210] The magnet (200) may be configured to be rotatable with respect to the magnetic heat unit. The rotation of the magnet (200), the first chamber (311), and the second chamber (411) may be configured to be synchronized.

[0211] The magnetic cooling device (30) may further include a rotating shaft (510) configured to rotate the magnet (200), the first chamber (311), and the second chamber (411) together.

[0212] The magnetic cooling device (30) may be configured to be switchable between a first mode (M1) for moving a heat transfer fluid cooled by the magnetic heat unit in a first direction (A) and a second mode (M2) for moving a heat transfer fluid heated by the magnetic heat unit in a second direction (B) opposite to the first direction.

[0213] While the magnetic cooling device is operating in the first mode (M1), the magnet (200) does not apply a magnetic field to the magnetic heat material (110), and the outer part (311a) of the first chamber is in communication with the first outlet (321), and the inner part (411b) of the second chamber is in communication with the second inlet (431).

[0214] While the magnetic cooling device is operating in the first mode (M1), the first outlet (321) is provided to guide the heat transfer fluid discharged from the first chamber toward the magnetic heat unit, and the second inlet (431) may be provided to guide the heat transfer fluid discharged from the magnetic heat unit toward the second chamber.

[0215] While the magnetic cooling device is operating in the second mode (M2), the magnet (200) applies a magnetic field to the magnetic heat material (110), and the outer part (411a) of the second chamber is in communication with the second outlet (421), and the inner part (311b) of the first chamber is in communication with the first inlet (331).

[0216] While the magnetic cooling device is operating in the second mode (M2), the second outlet (421) is provided to guide the heat transfer fluid discharged from the second chamber toward the magnetic heat unit, and the first inlet (331) may be provided to guide the heat transfer fluid discharged from the magnetic heat unit toward the first chamber.

[0217] The first chamber (311) may be configured to communicate with either the first outlet or the first inlet as it rotates. The second chamber (411) may be configured to communicate with either the second outlet or the second inlet as it rotates.

[0218] The outer part (311a) of the first chamber and the inner part (311b) of the first chamber may be configured to be spaced apart along the radial direction and have the same angular range with respect to the center of rotation. The outer part (411a) of the second chamber and the inner part (411a) of the second chamber may be configured to be spaced apart along the radial direction and have the same angular range with respect to the center of rotation.

[0219] The first chamber (311) may be configured to be optionally connected to the first outlet and always connected to the first inlet. The second chamber (411) may be configured to be optionally connected to the second outlet and always connected to the second inlet.

[0220] The first inlet (331) may be provided with a plurality of first inlets spaced apart along the circumferential direction. The inner portion (311bb) of the first chamber may be extended along the circumferential direction to communicate with all of the plurality of first inlets. The second inlet (431) may be provided with a plurality of second inlets spaced apart along the circumferential direction. The inner portion (411bb) of the second chamber may be extended along the circumferential direction to communicate with all of the plurality of second inlets.

[0221] The first fluid transfer device (300) may include: a first rotating frame (310) which is coupled to the rotating shaft and configured to rotate by the rotating shaft and includes the first chamber; a first fixed frame (320) which accommodates the first rotating frame and includes the first outlet; and a second fixed frame (330) which covers the first rotating frame accommodated by the first fixed frame and includes the first inlet. The second fluid transfer device (400) may include: a second rotating frame (410) which is coupled to the rotating shaft and configured to rotate by the rotating shaft and includes the second chamber; a third fixed frame (420) which accommodates the second rotating frame and includes the second outlet; and a fourth fixed frame (430) which covers the second rotating frame accommodated by the second fixed frame and includes the second inlet.

[0222] The above-described self-cooling device (30) may include a first sealing member (340) disposed between the first fixed frame and the second fixed frame; and a second sealing member (440) disposed between the third fixed frame and the fourth fixed frame.

[0223] The first fluid transfer device (300), the magnet (200), and the second fluid transfer device (400) may be arranged along the longitudinal direction (L) of the rotating shaft (510). The first chamber (311) and the magnet (200) may not be arranged to correspond along the longitudinal direction of the rotating shaft. The second chamber (411) and the magnet (200) may be arranged to correspond along the longitudinal direction of the rotating shaft.

[0224] A cooling cycle device (100) according to one embodiment of the present disclosure may include: a first heat exchanger (10) arranged to release heat; a second heat exchanger (20) arranged to absorb heat; and a magnetic cooling device (30) disposed between the first heat exchanger and the second heat exchanger and arranged to operate in a first mode (M1) or a second mode (M2). The magnetic cooling device (30) may include: a magnetic heat unit (100) comprising a case and a magnetic heat material disposed inside the case and having a temperature that changes based on a magnetic field; a magnet (200) that generates the magnetic field; a first fluid transfer device (300) connected to the high-temperature side of the magnetic heat unit and configured to transfer a heat transfer fluid using centrifugal force; and a second fluid transfer device (400) connected to the low-temperature side of the magnetic heat unit and configured to transfer a heat transfer fluid using centrifugal force. It may include a rotating shaft (510) configured to transmit rotational force to the magnet, the first fluid transfer device, and the second fluid transfer device.

[0225] The first fluid transfer device (300) may be configured to perform heat exchange with the first heat exchanger (10). The second fluid transfer device (400) may be configured to perform heat exchange with the second heat exchanger (20).

[0226] The first fluid transfer device (300) may include a first chamber (311) configured to be rotatable by the rotating shaft; a first outlet (321) configured to be connectable to the outer part (311a) of the first chamber; and a first inlet (331) configured to be connectable to the inner part (311b) of the first chamber. The second fluid transfer device (400) may include a second chamber (411) configured to be rotatable by the rotating shaft; a second outlet (421) configured to be connectable to the outer part (411a) of the second chamber; and a second inlet (431) configured to be connectable to the inner part (411b) of the second chamber.

[0227] While the magnetic cooling device is operating in the first mode (M1), the magnet does not apply a magnetic field to the magnetic heat material, and the outer part of the first chamber may be in communication with the first outlet, and the inner part of the second chamber may be in communication with the second inlet. While the magnetic cooling device is operating in the second mode (M2), the magnet applies a magnetic field to the magnetic heat material, and the outer part of the second chamber may be in communication with the second outlet, and the inner part of the first chamber may be in communication with the first inlet.

[0228] While the magnetic cooling device is operating in the first mode (M1), the heat transfer fluid flowing out from the first chamber through the first outlet can pass through the magnetic heat unit and flow into the second chamber through the second inlet. While the magnetic cooling device is operating in the second mode (M2), the heat transfer fluid flowing out from the second chamber through the second outlet can pass through the magnetic heat unit and flow into the first chamber through the first inlet.

[0229] According to various exemplary embodiments of the present disclosure, the magnetic cooling device (30) can move a heat transfer fluid using the centrifugal force of the first fluid transfer device (300) and the centrifugal force of the second fluid transfer device (400). The rotation of the magnet (200) of the magnetic cooling device (30), the first chamber (311) of the first fluid transfer device (300), and the second chamber (411) of the second fluid transfer device (400) can be synchronized. Thus, the heat transfer fluid can be uniformly distributed to a plurality of magnetic heat units (100), and the performance of the magnetic cooling device (30) can be improved.

[0230] According to various exemplary embodiments of the present disclosure, the magnetic cooling device (30) may have a simple structure. The magnetic cooling device (30) may not include a separate pump or a separate valve. Thus, noise caused by the pump and / or valve is not generated, and there is no need to perform pressure adjustment of the pump or on / off control of the valve. The ease of use of the magnetic cooling device (30) may be increased.

[0231] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs.

[0232] Specific embodiments have been illustrated and described above. However, the invention is not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the essence of the technical concept of the invention as described in the following claims.

Claims

1. A magnet arranged to form a magnetic field; A magnetic calorimetric unit comprising a magnetic calorimetric material configured to change temperature by the above magnetic field, and arranged to allow a heat transfer fluid to flow; A first fluid transfer device connected to the high-temperature side of the above-mentioned magnetic heat unit and configured to transfer a heat transfer fluid using centrifugal force; and A second fluid transfer device connected to the low-temperature side of the above-mentioned magnetic heat unit and configured to transfer a heat transfer fluid using centrifugal force; comprising The above-mentioned first fluid transfer device is, A first chamber configured to be rotatable with respect to the above-mentioned magnetic heat unit; A first outlet configured to be connectable to the outer part of the first chamber; and It includes a first inlet configured to be connectable to the inner part of the first chamber; The above second fluid transfer device is, A second chamber configured to be rotatable with respect to the above magnetic heat unit; A second outlet configured to be connectable to the outer part of the second chamber; and A magnetic cooling device comprising: a second inlet configured to be connectable to the inner part of the second chamber.

2. In Paragraph 1, The above magnet is configured to be rotatable with respect to the magnetic heat unit, and A magnetic cooling device configured such that the rotation of the magnet, the first chamber, and the second chamber is synchronized.

3. In Paragraph 2, A magnetic cooling device further comprising: a rotating shaft configured to rotate the magnet, the first chamber, and the second chamber together.

4. In Paragraph 1, The above magnetic cooling device is, A first mode for moving a heat transfer fluid cooled by the above-mentioned magnetic heat unit in a first direction, and A magnetic cooling device configured to be switchable between a second mode for moving a heat transfer fluid heated by the above magnetic heat unit in a second direction opposite to the first direction.

5. In Paragraph 4, While the above magnetic cooling device is operating in the first mode, The above magnet does not apply a magnetic field to the above magnetic thermal material, The outer part of the first chamber is in communication with the first outlet, and The inner part of the second chamber is a magnetic cooling device communicating with the second inlet.

6. In Paragraph 5, While the above magnetic cooling device is operating in the first mode, The first outlet is provided to guide the heat transfer fluid discharged from the first chamber toward the magnetic heat quantity unit, and The above second inlet is a magnetic cooling device configured to guide a heat transfer fluid discharged from the above magnetic heat quantity unit toward the second chamber.

7. In Paragraph 4, While the above magnetic cooling device is operating in the second mode, The above magnet applies a magnetic field to the above magnetic heat material, and The outer part of the second chamber is in communication with the second outlet, and The inner part of the first chamber is a magnetic cooling device communicating with the first inlet.

8. In Paragraph 7, While the above magnetic cooling device is operating in the second mode, The second outlet is provided to guide the heat transfer fluid discharged from the second chamber toward the magnetic heat unit, and The first inlet is a magnetic cooling device configured to guide a heat transfer fluid discharged from the magnetic heat unit toward the first chamber.

9. In Paragraph 1, The first chamber is configured to communicate with either the first outlet or the first inlet as it rotates, and The above second chamber is configured to communicate with either the second outlet or the second inlet as it rotates.

10. In Paragraph 9, The outer part of the first chamber and the inner part of the first chamber are spaced apart along the radial direction and configured to have the same angular range with respect to the center of rotation, and A magnetic cooling device configured such that the outer part of the second chamber and the inner part of the second chamber are spaced apart along the radial direction and have the same angular range with respect to the center of rotation.

11. In Paragraph 1, The first chamber is configured to be optionally connected to the first outlet and always connected to the first inlet, and The above second chamber is configured to be optionally connected to the above second outlet and always connected to the above second inlet, forming a magnetic cooling device.

12. In Paragraph 11, The above-mentioned first inlet is provided with a plurality of first inlets spaced apart along the circumferential direction, and The inner portion of the first chamber extends along the circumferential direction so as to be in communication with all of the plurality of first inlets, and The above second inlet is provided with a plurality of second inlets spaced apart along the circumferential direction, and A magnetic cooling device in which the inner portion of the second chamber extends along the circumferential direction to communicate with all of the plurality of second inlets.

13. In Paragraph 3, The above-mentioned first fluid transfer device is, A first rotating frame comprising a first chamber, configured to be coupled to the rotating shaft and rotated by the rotating shaft; A first fixed frame that accommodates the first rotating frame and includes the first outlet; and A second fixed frame that covers the first rotating frame accommodated in the first fixed frame and includes the first inlet; The above second fluid transfer device is, A second rotating frame coupled to the rotating shaft and configured to rotate by the rotating shaft, comprising the second chamber; A third fixed frame that accommodates the second rotating frame and includes the second outlet; and A magnetic cooling device comprising: a fourth fixed frame that covers the second rotating frame accommodated in the second fixed frame and includes the second inlet.

14. In Paragraph 13, A first sealing member disposed between the first fixed frame and the second fixed frame; and A magnetic cooling device comprising: a second sealing member disposed between the third fixed frame and the fourth fixed frame.

15. In Paragraph 3, The first fluid transfer device, the magnet, and the second fluid transfer device are arranged along the longitudinal direction of the rotating shaft, and The first chamber and the magnet are not arranged to correspond along the longitudinal direction of the rotating shaft, The second chamber and the magnet are arranged to correspond along the longitudinal direction of the rotating shaft in a magnetic cooling device.

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