A cold storage bed and magnetic refrigeration device

Abstract

The present invention provides a cold storage bed and a magnetic refrigeration device, wherein the cold storage bed comprises: a working part (11) and a preparatory part (12), wherein a magnetic medium is contained in the working part (11), and the working part (11) can move relative to a magnet (4) so ​​that the magnetic medium is magnetized or demagnetized, wherein the working part (11) is connected to the interior of the preparatory part (12), and a heat exchange fluid is driven from the preparatory part (12) into the working part (11), and the working part (11) is connected to a working outlet (13), and the working outlet (13) can flow out heat exchange fluid heated or cooled by the magnetized magnetic medium or heat exchange fluid cooled or heated by the demagnetized magnetic medium. The present invention can prevent the mixing of cold and hot fluids in the cold storage bed, improve the heat exchange effect, avoid the cycle of cold and hot outlets of the cold storage bed, and improve the heat exchange effect; and also simplify the magnetic refrigeration system and the pipeline structure.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic refrigeration, and in particular relates to a cold storage bed and a magnetic refrigeration device. Background Art

[0002] Magnetic refrigeration technology is a new type of refrigeration technology based on the magnetocaloric effect, which refers to the physical phenomenon that magnetocaloric materials release or absorb heat when the magnetic field is strengthened or weakened. When the magnetic field is applied to the magnetocaloric material, the magnetic entropy of the magnetocaloric material decreases and releases heat; when the magnetic field is removed, the magnetic entropy of the magnetocaloric material increases and absorbs heat. Magnetic refrigeration uses the phenomenon of magnetocaloric effect to achieve the purpose of refrigeration.

[0003] Rotary magnetic refrigerators have become the focus of research due to their compact structure, high operating frequency and good cooling effect. However, in the rotary magnetic refrigeration system, because the cold storage bed intermittently cools or heats during the demagnetization period, the hot outlet of the cold storage bed suddenly becomes a cold outlet, or the cold outlet suddenly becomes a hot outlet, which requires a very complex piping system. At the same time, the cold and hot fluids often mix, which seriously affects the magnetic refrigeration effect.

[0004] Since the magnetic refrigeration system in the prior art has the problem that the cold storage bed intermittently becomes cold or hot during the addition and demagnetization period, the hot outlet of the cold storage bed suddenly becomes a cold outlet, or the cold outlet suddenly becomes a hot outlet, thereby requiring a very complex piping system. At the same time, mixing of cold and hot fluids often occurs, seriously affecting the magnetic refrigeration effect and other technical problems, the present invention studies and designs a cold storage bed and a magnetic refrigeration device. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the magnetic refrigeration system in the prior art that the hot outlet and the cold outlet of the cold storage bed are alternately changed, resulting in the need for a very complex piping system, thereby providing a cold storage bed and a magnetic refrigeration device.

[0006] The present invention provides a cold storage bed, which comprises:

[0007] A working part and a preparatory part, wherein the working part contains a magnetic medium, and the working part can move relative to the magnet so that the magnetic medium is magnetized or demagnetized, the working part is connected to the interior of the preparatory part, and the heat exchange fluid can be driven from the preparatory part into the working part, and the working part is connected to a working outlet, and the working outlet can flow out the heat exchange fluid that heats up or cools the magnetic medium after being magnetized or the heat exchange fluid that cools or heats up the magnetic medium after being demagnetized.

[0008] Preferably,

[0009] The working outlet is also connected to a first reversing valve, one end of which is connected to the working outlet, and the other end is provided with two outlets including a hot outlet and a cold outlet, the hot outlet and the cold outlet can be selectively connected to the working outlet, when hot fluid flows out of the working outlet, the hot outlet is connected, and when cold fluid flows out of the working outlet, the cold outlet is connected.

[0010] Preferably,

[0011] The preparation part is connected to a preparation inlet, and the preparation inlet can be connected to the fluid after heat exchange in the cold exchanger or the heat exchanger to enter the preparation part.

[0012] Preferably,

[0013] The preparation inlet of the preparation part is also connected to a pump, and the pump can pump the heat exchange fluid after heat exchange into the preparation part.

[0014] Preferably,

[0015] The preparatory inlet of the preparatory part is also connected to a second reversing valve, which includes a second valve port at one end thereof, and a hot inlet and a cold inlet at the other end thereof, the second valve port is connected to the preparatory inlet, the hot inlet can be connected to the heat exchanger, and the cold inlet can be connected to the cold exchanger.

[0016] Preferably,

[0017] When a pump is included, the pump is disposed between the preparatory inlet and the second reversing valve.

[0018] Preferably,

[0019] The working part is connected to the preparation part, and the two rotate together. The preparation part is located radially outside the rotation direction of the working part. A communication channel is provided at the position where the preparation part and the working part meet.

[0020] Preferably,

[0021] The cross-sectional shape of the working part is a fan-shaped ring structure, and the cross-sectional shape of the preparation part is a fan-shaped ring structure.

[0022] The present invention further provides a magnetic refrigeration device, comprising the cold storage bed as described in any of the preceding items, and also comprising a magnet, wherein the magnet has a receiving groove for accommodating the movement of the working part into or out of the magnet.

[0023] Preferably,

[0024] The magnetic refrigeration device comprises a heat exchanger, the heat exchanger is provided with a heat inlet end and a heat outlet end respectively connected with the interior thereof, the magnetic refrigeration device further comprises a heat inlet pipeline connected with the heat inlet end and a heat outlet pipeline connected with the heat outlet end,

[0025] When the cold storage bed further includes a first reversing valve, the other end of the heat inlet pipeline is also connected to the heat outlet of the first reversing valve; when the cold storage bed further includes a second reversing valve, the other end of the heat outlet pipeline is connected to the heat inlet of the second reversing valve.

[0026] Preferably,

[0027] The magnetic refrigeration device comprises a cold exchanger, the cold exchanger is provided with a cold inlet end and a cold outlet end respectively connected to the interior thereof, and further comprises a cold inlet pipeline connected to the cold inlet end and a cold outlet pipeline connected to the cold outlet end.

[0028] When the cold storage bed further includes a first reversing valve, the other end of the cold inlet pipeline is also connected to the cold outlet of the first reversing valve; when the cold storage bed further includes a second reversing valve, the other end of the cold outlet pipeline is also connected to the cold inlet of the second reversing valve.

[0029] Preferably,

[0030] When both a heat exchanger and a cold exchanger are included, the heat exchanger is arranged on one side of the magnet, and the cold exchanger is arranged on the other side of the magnet; and / or the magnet is a permanent magnet.

[0031] Preferably,

[0032] When the cold inlet end, cold outlet end, cold inlet pipeline and cold outlet pipeline are also included:

[0033] A cold storage bed, a magnet, a hot inlet end, a hot outlet end, a cold inlet end, a cold outlet end, a hot inlet pipeline, a hot outlet pipeline, a cold inlet pipeline and a cold outlet pipeline constitute a partial structure of a circulation unit, and the magnetic refrigeration device includes more than two circulation units.

[0034] Preferably,

[0035] The two or more circulation units include two or more cold storage beds and two or more magnets. The heat exchanger includes two or more heat inlet ends and two or more heat outlet ends. The two or more heat inlet pipelines are arranged in a one-to-one correspondence with the heat inlet ends. The two or more heat outlet pipelines are arranged in a one-to-one correspondence with the heat outlet ends.

[0036] The cold exchanger includes more than two cold inlet ends and more than two cold outlet ends, the cold inlet pipelines are also more than two and are arranged in a one-to-one correspondence with the cold inlet ends, and the cold outlet pipelines are also more than two and are arranged in a one-to-one correspondence with the cold outlet ends.

[0037] The cold storage bed and magnetic refrigeration device provided by the present invention have the following beneficial effects:

[0038] 1. The present invention sets a two-part structure including a working part and a preparation part in the cold storage bed, and a magnetic working medium is set inside the working part, which can move in the magnetic field of the magnet to be magnetized and demagnetized to complete the heating or cooling of the heat exchange fluid. The preparation part is not provided with a magnetic working medium, and the heat exchange fluid can flow therein but does not exchange heat. Therefore, the preparation part forms a function of pre-storing the heat exchange fluid after heat exchange, and the stored heat exchange fluid is introduced into the working part again, so that the heat exchange fluid after heat exchange in the working part can be completely discharged and then introduced into the preparation part, effectively preventing the mixing of the cold and hot fluids in the cold storage bed, and improving the heat exchange effect. The working outlet is always one, either for the heat exchange fluid after heating or for the heat exchange fluid after cooling, effectively avoiding the situation that the cold and hot outlets of the cold storage bed need to be circulated and replaced, further improving the heat exchange effect, and being more conducive to heat exchange; and the above structure effectively simplifies the magnetic refrigerator system and the pipeline structure, and solves the problem of complex pipelines and bloated pipeline structure of the original magnetic refrigerator;

[0039] 2. The present invention sets a first reversing valve, one end of which is connected to the working outlet, and the hot outlet and the cold outlet at the other end can be selectively connected to the working outlet. It can divide the hot and cold fluids into two non-interfering fluids and flow them to the cold and heat exchangers for heat exchange during the demagnetization cycle. The hot outlet in the reversing valve is always the hot outlet, and the cold outlet is always the cold outlet. There will be no circulation of hot and cold fluid outlets to cause fluid mixing and affect the heat exchange effect, thereby greatly improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of the cold storage bed of the present invention;

[0041] Figure 2 It is a structural schematic diagram of the cold storage bed and magnet combination of the present invention;

[0042] Figure 3 yes Figure 2 Schematic diagram of the principle of adding and demagnetizing when the middle cold storage bed is combined with the magnet;

[0043] Figure 4 It is a schematic structural diagram of a circulation unit in the magnetic refrigeration device of the present invention;

[0044] Figure 5 It is a schematic diagram of the overall structure of the magnetic refrigeration device of the present invention.

[0045] The reference numerals in the figure represent:

[0046] 1. Cold storage bed; 11. Working part; 12. Preparatory part; 13. Working outlet; 14. Preparatory inlet; 2. First reversing valve; 21. Hot outlet; 22. Cold outlet; 3. Pump; 4. Magnet; 41. Receiving tank; 51. Hot inlet pipeline; 52. Cold inlet pipeline; 53. Hot outlet pipeline; 54. Cold outlet pipeline; 6. Heat exchanger; 61. Hot inlet end; 62. Hot outlet end; 7. Cold exchanger; 71. Cold inlet end; 72. Cold outlet end; 8. Second reversing valve; 81. Second valve port; 82. Hot inlet; 83. Cold inlet. DETAILED DESCRIPTION

[0047] like Figure 1-5 As shown, the present invention provides a cold storage bed, which includes:

[0048] The working part 11 and the preparation part 12, the working part 11 contains a magnetic medium, and the working part 11 can move relative to the magnet 4 to magnetize or demagnetize the magnetic medium, the working part 11 is connected to the interior of the preparation part 12, and the heat exchange fluid is driven from the preparation part 12 to enter the working part 11, and the working part 11 is connected to a working outlet 13, and the working outlet 13 can flow out the heat exchange fluid that has been heated or cooled by the magnetized magnetic medium or the heat exchange fluid that has been cooled or heated by the demagnetized magnetic medium.

[0049] By setting a two-part structure including a working part and a preparation part in the cold storage bed, and a magnetic working medium is set inside the working part, which can move in the magnetic field of the magnet to be magnetized and demagnetized, so as to complete the heating or cooling of the heat exchange fluid, and through the preparation part, the magnetic working medium is not set in the preparation part, and the heat exchange fluid can flow therein but does not exchange heat. Therefore, the function of pre-storing the heat exchange fluid after heat exchange is formed in the preparation part, and the stored heat exchange fluid is reintroduced into the working part, so that the heat exchange fluid after heat exchange in the working part can be completely discharged and then introduced into the heat exchange fluid from the preparation part, effectively preventing the mixing of the cold and hot fluids in the cold storage bed, improving the heat exchange effect, the working outlet is always one, either for the heat exchange fluid after heating or for the heat exchange fluid after cooling, effectively avoiding the situation that the cold and hot outlets of the cold storage bed need to be circulated and replaced, further improving the heat exchange effect, and being more conducive to heat exchange; and the above structure effectively simplifies the magnetic refrigerator system and the pipeline structure, and solves the problems of complex pipelines and bloated pipeline structure of the original magnetic refrigerator. The present invention provides a magnetic refrigeration system and a structural solution, so that the hot outlet of the cold storage bed is always a hot outlet, and the cold outlet is always a cold outlet, thereby clearly separating the hot and cold fluids.

[0050] The cold storage bed 1 has two parts, namely, a working part 11 and a preparatory part 12. The working part 11 contains magnetic working medium, which is not shown in the figure. When the cold storage bed enters the magnetizing area or the demagnetizing area, a temperature rise or fall effect will occur. The preparatory part 12 prepares for the next round of work.

[0051] Preferably,

[0052] The working outlet 13 is also connected to a first reversing valve 2, one end of which is connected to the working outlet 13, and the other end is provided with two outlets including a hot outlet 21 and a cold outlet 22, the hot outlet 21 and the cold outlet 22 can be selectively (respectively) connected to the working outlet 13, and when hot fluid flows out of the working outlet 13, the hot outlet 21 is connected, and when cold fluid flows out of the working outlet 13, the cold outlet 22 is connected.

[0053] By setting a first reversing valve, one end of which is connected to the working outlet, and the hot outlet and the cold outlet at the other end can be selectively connected to the working outlet, the hot and cold fluids can be divided into two non-interfering fluids during the magnetization and demagnetization cycles and flow to the cold and heat exchangers respectively for heat exchange; the hot outlet in the reversing valve is always the hot outlet, and the cold outlet is always the cold outlet, and there will be no circulation of hot and cold fluid outlets to cause fluid mixing and affect the heat exchange effect, thereby greatly improving the heat exchange efficiency.

[0054] The working outlet 13 is connected to the first reversing valve 2, which has two outlets, namely the hot outlet 21 and the cold outlet 22, and can be selectively switched to any of the hot outlet 21 and the cold outlet 22. The pump 3 is the power of the fluid circulation of the magnetic refrigerator, realizing the entire circulation process of pumping the fluid from the working part and flowing it into the preparation part after circulation.

[0055] The pump, reversing valve and other structures connected to each cold storage bed form an independent unit body, and this independent unit body can realize independent fluid circulation.

[0056] Preferably,

[0057] The preparation part 12 is connected with a preparation inlet 14, and the preparation inlet 14 can be connected to the fluid after heat exchange in the cold exchanger 7 or the heat exchanger 6 to enter the preparation part 12. This is the preferred structural form of the preparation part of the present invention. Through the preparation inlet, only fluid is allowed to enter (whether it is the cold outlet of the cold exchanger or the hot outlet of the heat exchanger), and there will be no circulation of cold and hot fluid outlets to cause fluid mixing and affect the heat exchange effect, which greatly improves the heat exchange efficiency.

[0058] Preferably,

[0059] The preparation inlet 14 of the preparation part 12 is also connected to a pump 3, which can pump the heat exchange fluid after heat exchange into the preparation part 12. The pump can provide power for the fluid flow, prompting the fluid to enter the preparation part and then enter the working part.

[0060] Preferably,

[0061] The preparation inlet 14 of the preparation part 12 is also connected with a second reversing valve 8, which includes a second valve port 81 at one end thereof, and a hot inlet 82 and a cold inlet 83 at the other end thereof. The second valve port 81 is connected with the preparation inlet 14, and the hot inlet 82 can be connected with the heat exchanger 6, and the cold inlet 83 can be connected with the cold exchanger 7. By providing a second reversing valve, one end of which is connected with the preparation outlet, and the hot inlet and the cold inlet at the other end can be selectively connected with the preparation outlet, two non-interfering fluids flowing out of the cold and heat exchangers can selectively flow into the preparation part in the second reversing valve; the hot inlet in the reversing valve is always the hot inlet, and the cold inlet is always the cold inlet, and there will be no circulation of hot and cold fluid outlets to cause fluid mixing and affect the heat exchange effect, which greatly improves the heat exchange efficiency.

[0062] Preferably,

[0063] When the pump 3 is included, the pump 3 is disposed between the preparatory inlet 14 and the second reversing valve 8. This is the preferred connection mode of the pump and the second reversing valve of the present invention.

[0064] Preferably,

[0065] The working part 11 is connected to the preparatory part 12, and the two rotate together. The preparatory part 12 is located radially outside the rotation direction of the working part 11. A connecting passage (not shown) is provided at the position where the preparatory part 12 and the working part 11 meet. This is the preferred connection form of the working part and the preparatory part of the present invention. Figure 1 and 2 As shown, the two rotate as a whole, and the fluid in the preparation part is conducted to the working part through the communication channel.

[0066] Preferably,

[0067] The cross-sectional shape of the working part 11 is a fan-shaped ring structure, and the cross-sectional shape of the preparatory part 12 is a fan-shaped ring structure. This is the preferred structural form of the working part and the preparatory part of the present invention, which enables the fan-shaped ring structure to form a circulation unit, and multiple circulation units can be distributed on a circumference, and multiple units work simultaneously or in a distributed manner to improve the efficiency of magnetic refrigeration or heating.

[0068] like Figure 4-5 As shown, the present invention further provides a magnetic refrigeration device, which includes the cold storage bed 1 described in any of the preceding items, and also includes a magnet 4, wherein the magnet 4 has a receiving groove 41 for accommodating the movement of the working part 11 into or out.

[0069] The present invention forms a function of pre-storing the heat exchange fluid after heat exchange through the preparation part, and re-introduces the stored heat exchange fluid into the working part, so that the heat exchange fluid after heat exchange in the working part can be completely discharged and then the heat exchange fluid can be introduced from the preparation part, which effectively prevents the mixing of the cold and hot fluids in the cold storage bed, improves the heat exchange effect, and the working outlet is always one, either for the heat exchange fluid after heating or for the heat exchange fluid after cooling, effectively avoiding the situation that the cold and hot outlets of the cold storage bed need to be circulated and replaced, further improving the heat exchange effect, and being more conducive to heat exchange; and the above structure effectively simplifies the magnetic refrigerator system and the piping structure, and solves the problem of complex piping and bloated piping structure of the original magnetic refrigerator.

[0070] like Figure 3 The cold storage bed moves clockwise (or counterclockwise) relative to the permanent magnet assembly. When the working part of the cold storage bed enters the magnet air gap, that is, enters the magnetization area, the magnetic working fluid is magnetized, accompanied by a heating effect. When the cold storage bed is away from the magnet air gap, that is, enters the demagnetization area, the magnetic working fluid is accompanied by a cooling effect.

[0071] Preferably,

[0072] The magnetic refrigeration device includes a heat exchanger 6, and the heat exchanger 6 is provided with a heat inlet end 61 and a heat outlet end 62 respectively connected to the interior thereof. The magnetic refrigeration device also includes a heat inlet pipeline 51 connected to the heat inlet end 61 and a heat outlet pipeline 53 connected to the heat outlet end 62.

[0073] When the cold storage bed also includes a first reversing valve 2, the other end of the heat inlet pipeline 51 is also connected to the heat outlet 21 of the first reversing valve 2; when the cold storage bed also includes a second reversing valve 8, the other end of the heat outlet pipeline 53 is connected to the heat inlet 82 of the second reversing valve 8.

[0074] This is the preferred structural form of the magnetic refrigeration device of the present invention. Through the heat exchanger and the hot inlet end, hot outlet end, hot inlet pipeline and hot outlet pipeline arranged thereon, a circulating heat flow connection mode of the heat exchanger can be formed, that is, the hot fluid flows out from the hot outlet 21 of the first reversing valve, enters the heat exchanger through the hot inlet pipeline 51 and the hot inlet end 61 to release heat, and then enters the hot inlet 82 of the second reversing valve through the hot outlet end 62 and the hot outlet pipeline 53, thereby completing the purpose of external heating (releasing heat).

[0075] Preferably,

[0076] The magnetic refrigeration device includes a cold exchanger 7, the cold exchanger 7 is provided with a cold inlet end 71 and a cold outlet end 72 respectively connected to the interior thereof, and also includes a cold inlet pipeline 52 connected to the cold inlet end 71 and a cold outlet pipeline 54 connected to the cold outlet end 72.

[0077] When the cold storage bed also includes a first reversing valve 2, the other end of the cold inlet pipeline 52 is also connected to the cold outlet 22 of the first reversing valve 2; when the cold storage bed also includes a second reversing valve 8, the other end of the cold outlet pipeline 54 is also connected to the cold inlet 83 of the second reversing valve 8.

[0078] This is the preferred structural form of the magnetic refrigeration device of the present invention. Through the cold exchanger and the cold inlet end, cold outlet end, cold inlet pipeline and cold outlet pipeline arranged thereon, a circulating cold flow connection mode of the cold exchanger can be formed, that is, the cold fluid flows out from the cold outlet 22 of the first reversing valve, enters the cold exchanger through the cold inlet pipeline 52 and the cold inlet end 71, absorbs heat, and then enters the cold inlet 83 of the second reversing valve through the cold outlet end 72 and the cold outlet pipeline 54, thereby completing the purpose of external refrigeration (releasing cold).

[0079] Preferably,

[0080] When both the heat exchanger 6 and the cold exchanger 7 are included, the heat exchanger 6 is arranged on one side of the magnet 4, and the cold exchanger 7 is arranged on the other side of the magnet 4; and / or the magnet 4 is a permanent magnet. This is the preferred positional relationship between the heat exchanger, the cold exchanger and the magnet of the present invention, as well as the preferred structural form of the magnet. It is further preferred that the heat exchanger 6 is located above the magnet, such as Figure 4 and 5 As shown, the cold exchanger 7 is located below the magnet.

[0081] Preferably,

[0082] When the cold inlet port 71, the cold outlet port 72, the cold inlet pipeline 52 and the cold outlet pipeline 54 are also included:

[0083] The cold storage bed 1, the magnet 4, the hot inlet end 61, the hot outlet end 62, the cold inlet end 71, the cold outlet end 72, the hot inlet pipeline 51, the hot outlet pipeline 53, the cold inlet pipeline 52 and the cold outlet pipeline 54 constitute a partial structure of a circulation unit, and the magnetic refrigeration device includes more than two circulation units. The above-mentioned circulation unit can achieve the functions and effects of independent heating and cooling.

[0084] Preferably,

[0085] The two or more circulation units include two or more cold storage beds 1 and two or more magnets 4. The heat exchanger 6 includes two or more heat inlet ends 61 and two or more heat outlet ends 62. The number of heat inlet pipelines 51 is also more than two and they are arranged in a one-to-one correspondence with the heat inlet ends 61. The number of heat outlet pipelines 53 is also more than two and they are arranged in a one-to-one correspondence with the heat outlet ends 62.

[0086] The cold exchanger 7 includes more than two cold inlet ends 71 ​​and more than two cold outlet ends 72, the cold inlet pipelines 52 are also more than two and are arranged one-to-one corresponding to the cold inlet ends 71, and the cold outlet pipelines 54 are also more than two and are arranged one-to-one corresponding to the cold outlet ends 72.

[0087] like Figure 4, the cold storage bed 1 is in the magnetized state, and the fluid in the cold storage bed is a hot fluid. At this time, the pump 3 is turned on, and the fluid in the working part of the cold storage bed is pumped to the heat exchanger 6 through the hot outlet of the first reversing valve 2 along the hot inlet pipeline 51 (the reversing valve can only open one outlet at a time, so the cold outlet is in a closed state at this time). The fluid on the heat exchanger 6 becomes a normal temperature fluid after heat exchange, flows to the pump 3 through the hot outlet pipeline 53, and then flows into the preparatory part of the cold storage bed 1. In the next demagnetization cycle, the normal temperature fluid in the preparatory part of the cold storage bed will be pumped to the working part of the cold storage bed. After demagnetization, the fluid temperature is lower than normal temperature. At this time, the pump 3 will flow the cold fluid through the cold outlet of the first reversing valve 2 (the cold outlet of the reversing valve is open and the hot outlet is closed) and then into the cold exchanger 7 through the cold inlet pipeline 52. The fluid in the cold exchanger 7 becomes a normal temperature fluid after heat exchange, and then flows to the preparatory part of the cold storage bed 1 through the cold outlet pipeline 54.

[0088] Therefore, in the demagnetization cycle, the hot and cold fluids can be divided into two non-interfering fluids and flow to the cold and heat exchangers for heat exchange. The hot outlet in the reversing valve is always the hot outlet, and the cold outlet is always the cold outlet. There will be no circulation of hot and cold fluid outlets to cause fluid mixing and affect the heat exchange effect, which greatly improves the heat exchange efficiency.

[0089] like Figure 5 As shown, each cold storage bed is connected to a unit, and as mentioned above, the flow path and structural system of the whole machine are formed by the units of multiple cold storage beds, thereby achieving the beneficial effects described in this patent.

[0090] The present invention: 1. The cold storage bed has a two-part structure, one part is installed with magnetic working medium, called the working part structure, and the other part is used to hold the preparation fluid, called the preparation part structure. When the working fluid of the cold storage bed is pumped away by the pump, the preparation fluid enters the working part structure, and at the same time, the fluid that completes the heat exchange in the system is pumped to the preparation part structure to form a new preparation structure.

[0091] 2. The working part and the preparatory part of the cold storage bed each have an inlet and outlet, and each inlet and outlet are connected to the reversing valve to control the flow direction of the first reversing valve according to the working requirements. When the cold storage bed is in the magnetization cycle, the first reversing valve switches to the flow path on the heat exchanger side. When the cold storage bed is in the demagnetization cycle, the first reversing valve switches to the flow path on the cold exchanger side. Each cold storage bed and its pump, reversing valve and other structures form a unit body, which can independently complete the circulation of the fluid.

[0092] 3. The pump can be set at the outlet of the preparation side. When the pump is started, the fluid in the heat exchanger or cold exchanger is selectively pumped to the preparation part structure of the cold storage bed according to work requirements, and the original preparation part fluid is pumped to the working part, thus forming a cycle and working continuously.

[0093] It has the following beneficial effects:

[0094] 1. Avoid mixing of cold and hot fluids and improve heat exchange effect.

[0095] 2. Avoid the cyclic alternation of cold and hot outlets of the cold storage bed, realize a single cold and hot outlet, and facilitate the diversion of cold and hot fluids.

[0096] 3. The magnetic refrigerator system and piping structure are simplified.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A cold storage bed, characterized in that: include: A working part (11) and a preparation part (12), wherein the working part (11) contains a magnetic medium, and the working part (11) can move relative to the magnet (4) so ​​that the magnetic medium is magnetized or demagnetized, the working part (11) is connected to the interior of the preparation part (12), and a heat exchange fluid can be driven from the preparation part (12) into the working part (11), and the working part (11) is connected to a working outlet (13), and the working outlet (13) can flow out the heat exchange fluid that has been heated or cooled by the magnetized magnetic medium or the heat exchange fluid that has been cooled or heated by the demagnetized magnetic medium; The working outlet (13) is also connected to a first reversing valve (2); one end of the first reversing valve (2) is connected to the working outlet (13); the other end of the first reversing valve (2) is provided with two outlets including a hot outlet (21) and a cold outlet (22); the hot outlet (21) and the cold outlet (22) can be selectively connected to the working outlet (13); when a hot fluid flows out of the working outlet (13), the hot outlet (21) is connected; when a cold fluid flows out of the working outlet (13), the cold outlet (22) is connected; the working outlet (13) is always one, and no magnetic working medium is provided in the preparation part (12).

2. The cold storage bed according to claim 1, characterized in that: The preparation part (12) is connected to a preparation inlet (14), and the preparation inlet (14) can be connected to allow the fluid after heat exchange in the cold exchanger (7) or the heat exchanger (6) to enter the preparation part (12).

3. The cold storage bed according to claim 2, characterized in that: The preparation inlet (14) of the preparation part (12) is also connected to a pump (3), and the pump (3) is capable of pumping the heat exchange fluid after heat exchange into the preparation part (12).

4. The cold storage bed according to claim 3, characterized in that: The preparation inlet (14) of the preparation part (12) is also connected to a second reversing valve (8), the second reversing valve (8) comprising a second valve port (81) located at one end thereof, and a hot inlet (82) and a cold inlet (83) located at the other end thereof, the second valve port (81) being connected to the preparation inlet (14), the hot inlet (82) being able to be connected to the heat exchanger (6), and the cold inlet (83) being able to be connected to the cold exchanger (7).

5. The cold storage bed according to claim 4, characterized in that: The pump (3) is arranged between the preparatory inlet (14) and the second reversing valve (8).

6. The cold storage bed according to any one of claims 1 to 5, characterized in that: The working part (11) is connected to the preparation part (12), and the two rotate together; the preparation part (12) is located radially outside the rotation direction of the working part (11); and a communication channel is provided at a position where the preparation part (12) and the working part (11) are connected.

7. The cold storage bed according to claim 6, characterized in that: The cross-sectional shape of the working part (11) is a fan-shaped ring structure, and the cross-sectional shape of the preparation part (12) is a fan-shaped ring structure.

8. A magnetic refrigeration device, characterized in that: The cold storage bed (1) comprises the cold storage bed (1) according to any one of claims 1 to 7, and further comprises a magnet (4), wherein the magnet (4) has a receiving groove (41) for accommodating the movement of the working part (11) into or out of the working part (11).

9. The magnetic refrigeration device according to claim 8, characterized in that: The magnetic refrigeration device comprises a heat exchanger (6); the heat exchanger (6) is provided with a heat inlet end (61) and a heat outlet end (62) respectively connected to the interior of the heat exchanger; the magnetic refrigeration device further comprises a heat inlet pipeline (51) connected to the heat inlet end (61) and a heat outlet pipeline (53) connected to the heat outlet end (62).

10. The magnetic refrigeration device according to claim 9, characterized in that: The other end of the heat inlet pipeline (51) is also in communication with the heat outlet (21) of the first reversing valve (2); when the cold storage bed further includes a second reversing valve (8), the other end of the heat outlet pipeline (53) is in communication with the heat inlet (82) of the second reversing valve (8).

11. The magnetic refrigeration device according to any one of claims 8 to 10, characterized in that: The magnetic refrigeration device comprises a cold exchanger (7), the cold exchanger (7) being provided with a cold inlet end (71) and a cold outlet end (72) respectively connected to the interior thereof, and further comprising a cold inlet pipeline (52) connected to the cold inlet end (71) and a cold outlet pipeline (54) connected to the cold outlet end (72). The other end of the cold inlet pipeline (52) is also connected to the cold outlet (22) of the first reversing valve (2); when the cold storage bed further includes a second reversing valve (8), the other end of the cold outlet pipeline (54) is also connected to the cold inlet (83) of the second reversing valve (8).

12. The magnetic refrigeration device according to claim 11, characterized in that: When both a heat exchanger (6) and a cold exchanger (7) are included, the heat exchanger (6) is arranged on one side of the magnet (4), and the cold exchanger (7) is arranged on the other side of the magnet (4); and the magnet (4) is a permanent magnet.

13. The magnetic refrigeration device according to claim 11, characterized in that: When the cold inlet end (71), the cold outlet end (72), the cold inlet pipeline (52), the cold outlet pipeline (54), the hot inlet end (61), the hot outlet end (62), the hot inlet pipeline (51) and the hot outlet pipeline (53) are also included: A cold storage bed (1), a magnet (4), a hot inlet end (61), a hot outlet end (62), a cold inlet end (71), a cold outlet end (72), a hot inlet pipeline (51), a hot outlet pipeline (53), a cold inlet pipeline (52) and a cold outlet pipeline (54) constitute a partial structure of a circulation unit, and the magnetic refrigeration device includes more than two circulation units.

14. The magnetic refrigeration device according to claim 13, characterized in that: When a heat exchanger (6) is included, the two or more circulation units include two or more cold storage beds (1) and two or more magnets (4); the heat exchanger (6) includes two or more heat inlet ends (61) and two or more heat outlet ends (62); the heat inlet pipelines (51) are also two or more and are arranged in a one-to-one correspondence with the heat inlet ends (61); the heat outlet pipelines (53) are also two or more and are arranged in a one-to-one correspondence with the heat outlet ends (62); The cold exchanger (7) comprises more than two cold inlet ends (71) and more than two cold outlet ends (72), the number of cold inlet pipelines (52) is also more than two and they are arranged in a one-to-one correspondence with the cold inlet ends (71), and the number of cold outlet pipelines (54) is also more than two and they are arranged in a one-to-one correspondence with the cold outlet ends (72).

Images