Rotary type dynamic heat storage equipment utilizing machinery to separate liquid

Abstract

The invention relates to the technical field of heat energy storage, in particular to a rotary dynamic heat storage device utilizing machinery to separate liquid, which comprises a heat storage cylinder, a water delivery pipe, a linear Fresnel lens, a power unit, a heat collection block, a movable magnet and a static magnet, the heat storage cylinder is of a multi-layer structure, and a water storage cavity, a heat collection cavity and a vacuum cavity are sequentially distributed in the heat storage cylinder from inside to outside; round fins located in the heat collection cavity are attached to the interior of the heat collection cavity, the water conveying pipe penetrates through the heat collection cavity, a sealing bearing is installed at the connecting position of the water conveying pipe and the heat collection cavity, the static magnet is installed on the water conveying pipe, the heat collection block is arranged in the heat exchange cavity, and the movable magnet is installed at the bottom of the heat collection block. The movable magnet and the static magnet attract each other, and sliding wheels are installed at the bottom of the movable magnet. The phase-change material is promoted to continuously flow in the heat collection cavity through the rotary dynamic structure, the high-temperature heat collection block is in contact with the solid phase-change material in combination with magnetic driving, the heat resistance is effectively reduced, and the heat storage efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal energy storage and release, and in particular to a rotary dynamic heat storage device utilizing mechanical separation of liquid. Background Art

[0002] Thermal storage devices, primarily based on the principles of thermal energy storage and release, play a vital role in solar thermal systems. When a heat source generates thermal energy, it is transferred to a thermal storage medium for storage. For example, in solar applications, during the day, solar collectors convert solar energy into thermal energy, which is then transferred to a thermal storage medium via a heat transfer medium and stored within the thermal storage device. When thermal energy is needed, the thermal energy in the thermal storage medium is released through heat exchange equipment. Phase change materials, due to their excellent thermal storage density and constant-temperature phase change properties, are considered a highly promising energy carrier that can effectively store and release energy, improving the efficiency and stability of solar collectors.

[0003] In existing technologies, solar thermal storage systems generally use static phase change materials for heat storage. Phase change materials gradually liquefy during heat absorption, and the melting front continues to move away from the heat source, resulting in the formation of a liquid thermal resistance layer between the unmelted area and the heat source. Liquid phase change materials have low thermal conductivity, which reduces heat transfer efficiency, resulting in a prolonged heat storage period and uneven heat distribution. Traditional heat storage devices are often improved by increasing the heat exchange area or strengthening the thermal conductivity of the material, but it is difficult to solve the problem of mobile thermal resistance formed by liquid materials during dynamic phase change. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a rotary dynamic heat storage device that drives the phase change material to roll in the heat storage cylinder to achieve close contact between the solid phase change material and the high-temperature heat source, thereby reducing the heat transfer resistance and improving the heat storage efficiency.

[0005] Technical solution: The present invention relates to a rotary dynamic heat storage device that utilizes mechanical separation of liquid, comprising a heat storage cylinder, a water pipe, a linear Fresnel lens, a power unit, a heat collecting block, a moving magnet, and a static magnet. The heat storage cylinder is arranged as a multi-layer structure, and is sequentially divided into a water storage chamber, a heat collecting chamber, and a vacuum chamber from the inside out. The inner side wall of the heat collecting chamber is provided with circular ribs. The water pipe passes through the heat storage cylinder, and a sealed bearing is installed at the connection position between the water pipe and the heat collecting chamber. The static magnet is installed on the water pipe, the heat collecting block is arranged in the heat collecting chamber, the moving magnet is installed at the bottom of the heat collecting block, and the moving magnet and the static magnet attract each other. A sliding wheel is installed at the bottom of the moving magnet, and the sliding wheel rolls in contact with the heat storage cylinder. Arc ribs are installed at the bottom of the heat collecting block. The linear Fresnel lens is installed on the water pipe through a lens holder. The water pipe is fixed on a bracket, and the linear Fresnel lens is located above the heat storage cylinder. The power unit is installed on the water pipe, and the power unit is transmission-connected to the heat storage cylinder.

[0006] Preferably, the water storage cavity and the heat collection cavity are filled with water and phase change material respectively.

[0007] Preferably, a circular groove is provided at the center of the surface of one side of the heat collecting chamber close to the heat storage cylinder, and the sliding wheel is arranged in the circular groove.

[0008] Preferably, the annular fins arranged in the heat collecting cavity are cross-arranged with the arc-shaped fins installed at the bottom of the heat collecting block.

[0009] Preferably, the inner wall of the heat collection chamber is made of a metal material with excellent thermal conductivity and is not attracted by magnets, and the inner and outer walls of the vacuum chamber are both made of a transparent material with excellent light transmittance.

[0010] Preferably, the water pipe is made of non-magnetic metal, both ends of the water pipe are configured as hollow structures, and circular holes are provided at the inlet and outlet, and a sealing plug is installed in the middle of the water pipe.

[0011] Preferably, the non-magnetic metal is copper or aluminum.

[0012] Preferably, the surface of the heat collecting block is coated with a high-absorption coating, and sunlight is focused by a linear Fresnel lens and then irradiated onto the surface of the high-absorption coating.

[0013] Preferably, the power unit includes a clockwork device, a driven gear and a driving gear, the clockwork device is installed on the water pipe, the driving gear is installed at the power output end of the clockwork device, the end of the driven gear is in contact with the side wall of the sealed bearing, and the driven gear is meshed with the driving gear.

[0014] Preferably, the lens holder is fixed to the water pipe by bolts.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0016] (1) The present invention promotes the continuous flow of phase change material in the heat collection cavity through a rotating dynamic structure, and combines magnetic drive to keep the high-temperature heat collection block in contact with the solid phase change material, effectively reducing thermal resistance and improving heat conduction efficiency, and has the advantages of improving solar heat storage density and thermal energy utilization rate.

[0017] (2) By setting the moving magnet, static magnet, circular fins and arc fins inside the heat storage cylinder, the heat exchange area between the phase change material and the heat collecting block and the water flow in the center of the equipment is effectively enhanced, making the storage and release of thermal energy more efficient.

[0018] (3) The magnetic positioning mechanism adopted by the present invention ensures the alignment accuracy of the heat collecting block and the lens focus, thereby improving the stability of photothermal conversion.

[0019] (4) The present invention adopts a purely mechanical transmission mechanism composed of a spring and a gear as a power source, which is completely independent of external power and effectively improves energy saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a rotary dynamic heat storage device provided in an embodiment of the present invention;

[0021] Figure 2 is a cross-sectional view of a heat storage cylinder according to an embodiment of the present invention;

[0022] Figure 3 It is a three-dimensional half-section view of the heat storage cylinder in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Attachment Figures 1 to 3 The reference numerals in the figures are as follows:

[0025] 1. Heat storage cylinder; 101. Vacuum chamber; 102. Circular fins; 103. Circular grooves; 104. Water storage chamber; 105. Heat collection chamber; 2. Water pipe; 201. Circular hole; 202. Sealing plug; 3. Linear Fresnel lens; 4. Bracket; 5. Clockwork device; 6. Driven gear; 7. Lens holder; 8. Bolt; 9. Drive gear; 10. Sealed bearing; 11. Heat collection block; 1101. Arc fins; 1102. High-absorption coating; 12. Moving magnet; 13. Static magnet; 14. Sliding wheel.

[0026] See also Figures 1 to 3, an embodiment of the present invention provides a rotating dynamic heat storage device that utilizes mechanical separation of liquid, including a heat storage cylinder 1, a water pipe 2, a linear Fresnel lens 3, a power unit, a heat collecting block 11, a moving magnet 12, and a static magnet 13. The heat storage cylinder 1 is configured as a multi-layer structure, and is sequentially distributed from the inside to the outside as a water storage chamber 104, a heat collecting chamber 105, and a vacuum chamber 101. Circular fins 102 are provided on the inner wall of the heat collecting chamber 105 to expand the heat exchange area between the phase change material and water. The water pipe 2 is provided through the heat storage cylinder 1, and a sealed bearing 10 is installed at the connection position between the water pipe 2 and the heat storage cylinder 1 to ensure that the water pipe remains stationary and there is no medium leakage when the heat storage cylinder 1 rotates. Static magnet 13 is mounted on water pipe 2. Heat collection block 11 is positioned within heat collection cavity 105. Moving magnet 12 is mounted at the bottom of heat collection block 11. Moving magnet 12 and static magnet 13 form a magnetic coupling, specifically using neodymium iron boron permanent magnets. This ensures that heat collection block 11 maintains radial alignment with water pipe 2. A sliding wheel 14 is mounted at the bottom of moving magnet 12, which rolls against the inner wall of heat collection cavity 105. Arc-shaped fins 1101 are mounted at the bottom of heat collection block 11 to increase the heat exchange area between heat collection block 11 and the phase change material. A linear Fresnel lens 3 is mounted on water pipe 2 via lens holder 7. Lens holder 7 is secured to water pipe 2 via bolts 8. Water pipe 2 is secured to bracket 4. Linear Fresnel lens 3 is positioned above heat storage cylinder 1. A power unit is mounted on water pipe 2 to drive heat storage cylinder 1 in rotation.

[0027] Reference Figure 2 As a specific embodiment of the present invention, specifically, the water storage chamber 104 is used to store heat transfer media such as cold water, the heat collection chamber 105 is filled with phase change materials such as paraffin, and the vacuum chamber 101 forms an insulation layer through vacuum treatment.

[0028] Reference Figure 2 As a specific embodiment of the present invention, a circular groove 103 is defined at the center of the heat collection chamber 105 on one side of the surface near the heat storage cylinder 1. The depth and width of the groove 103 can be adjusted adaptively based on the size of the sliding wheel 14. For example, the depth can be 2 to 5 mm, and the width can be 1.2 to 1.5 times the diameter of the sliding wheel. The center of the circular groove 103 coincides with the rotation axis of the heat storage cylinder 1, confining the sliding wheel 14 to a circular path within the groove 103. The contact surface between the sidewalls of the groove 103 and the sliding wheel 14 forms a mechanical guide, preventing the sliding wheel 14 from axial displacement. When the heat storage cylinder 1 rotates, the sliding wheel 14 rolls within the groove 103, its motion trajectory always aligning with the annular contour of the groove 103. This prevents the sliding wheel 14 from separating from the surface of the heat storage cylinder 1 or uneven contact pressure due to centrifugal force or assembly errors. The restraining effect of the groove 103 on the sliding wheel 14 maintains the magnetic attraction between the moving magnet 12 and the static magnet 13 within a preset range.

[0029] Reference Figure 1 and Figure 2 As a specific embodiment of the present invention, specifically, the water pipe 2 is made of non-magnetic metal such as copper or aluminum. Both ends of the water pipe 2 are configured as hollow structures, and circular holes 201 are provided at the inlet and outlet thereof for establishing a cold water transmission path. A sealing plug 202 is installed in the middle portion of the water pipe 2 to block the flow of cold water in the middle section of the water storage chamber 104 and increase the contact time between the cold water and the phase change material. Under the action of the sealing plug 202, the inlet end of the water pipe 2 passes the cold water into the water storage chamber 104, and then the cold water flows out from the outlet end after fully absorbing heat in the water storage chamber 104.

[0030] Reference Figure 2 As a specific embodiment of the present invention, a high-absorption coating 1102 covers the upper surface of the heat collection block 11, forming a matching relationship with the optical path of the linear Fresnel lens 3. When sunlight enters the linear Fresnel lens 3, it refracts and focuses the light into a high-energy-density linear spot, which is then precisely projected onto the surface of the high-absorption coating 1102 through the transparent vacuum chamber 101. The high-absorption coating 1102 converts light energy into heat energy through its selective absorption properties, creating a rapidly heating region on the surface of the heat collection block 11. This heat is then transferred to the interior of the phase change material through the curved fins 1101 on the heat collection block.

[0031] Reference Figure 2 As a specific embodiment of the present invention, specifically, the annular fins 102 arranged in the heat collecting cavity 105 and the arc fins 1101 installed at the bottom of the heat collecting block 11 form an interlaced gap, which is used to allow the liquid phase change material to flow and enhance the turbulent effect of the liquid phase change material when it flows.

[0032] Reference Figure 2 and Figure 3 As a specific embodiment of the present invention, the power unit includes a clockwork device 5, a driven gear 6, and a driving gear 9. The clockwork device 5 is installed on the water pipe 2, and the driving gear 9 is installed at the power output end of the clockwork device 5. The end of the driven gear 6 is in contact with the side wall of the sealed bearing 10, and the driven gear 6 and the driving gear 9 are meshed. When the clockwork device 5 releases the stored mechanical energy, the driving gear 9 rotates synchronously with the output shaft, driving the meshed driven gear 6 to rotate in the opposite direction. The friction force generated by the contact between the end face of the driven gear 6 and the side wall of the sealed bearing 10 drives the outer ring of the sealed bearing 10 to rotate, thereby driving the heat storage cylinder 1 to move circumferentially around the axis of the water pipe 2.

[0033] The working process of the rotary dynamic heat storage device provided by the embodiment of the present invention is as follows:

[0034] During the day, sunlight passes through the linear Fresnel lens 3 and is focused onto the highly absorptive coating 1102 on the surface of the heat collection block 11, generating heat. The solid phase-change material absorbs the heat and melts. The clockwork device 5 drives the heat storage cylinder 1 to rotate. Under the attraction of the static magnet 12 and the moving magnet 13, the high-temperature heat collection block 11 remains stationary. The solid phase-change material in the heat storage cylinder 1 comes into close contact with the heat collection block 11, and the melted phase-change material is squeezed out, eliminating the liquid thermal resistance layer and reducing the thermal resistance. Cold water enters the water storage chamber 104 through one end of the water pipe 2. The circular fins 102 enhance heat exchange, and the heat stored in the liquid phase-change material heats the cold water in the water storage chamber 104. Hot water is then pumped out of the other end of the water pipe 2 for use. After the liquid phase-change material has released heat, it changes phase back to a solid state. During the day, the device collects heat, with the phase-change material melting and storing heat. At night, the phase-change material solidifies, releasing heat and heating the cold water, achieving a daytime and nighttime operating cycle.

Claims

1. A rotary dynamic heat storage device utilizing mechanical separation of liquid, characterized in that: The invention comprises a heat storage cylinder (1), a water pipe (2), a linear Fresnel lens (3), a power unit, a heat collecting block (11), a moving magnet (12), and a static magnet (13). The heat storage cylinder (1) is provided with a multi-layer structure, and is sequentially distributed from the inside to the outside into a water storage cavity (104), a heat collecting cavity (105), and a vacuum cavity (101). The inner wall of the heat collecting cavity (105) is provided with a circular rib (102). The water pipe (2) passes through the heat storage cylinder (1), and a sealing bearing (10) is installed at the connection position between the water pipe (2) and the heat collecting cavity (105). The static magnet (13) is installed on the water pipe (2). The heat collecting block (11) is provided at the heat collecting cavity (101). In the cavity (5), a moving magnet (12) is installed at the bottom of the heat collecting block (11), and the moving magnet (12) and the static magnet (13) attract each other. A sliding wheel (14) is installed at the bottom of the moving magnet (12), and the sliding wheel (14) and the heat storage cylinder (1) are in rolling contact. An arc-shaped rib (1101) is installed at the bottom of the heat collecting block (11). The linear Fresnel lens (3) is installed on the water pipe (2) through the lens frame (7). The water pipe (2) is fixed on the bracket (4), and the linear Fresnel lens (3) is located above the heat storage cylinder (1). The power unit is installed on the water pipe (2), and the power unit is connected to the heat storage cylinder (1) in a transmission manner.

2. The rotary dynamic heat storage device according to claim 1, characterized in that: The water storage chamber (104) and the heat collection chamber (105) are filled with water and phase change material respectively.

3. The rotary dynamic heat storage device according to claim 2, characterized in that: A circular groove (103) is provided at the center of the surface of one side of the heat collecting chamber (105) close to the heat storage cylinder (1), and the sliding wheel (14) is arranged in the circular groove (103).

4. The rotary dynamic heat storage device according to claim 2, characterized in that: The circular fins (102) arranged in the heat collection cavity (5) and the arc-shaped fins (1101) installed at the bottom of the heat collection block (11) are arranged crosswise.

5. The rotary dynamic heat storage device according to claim 1, characterized in that: The inner wall of the heat collection cavity (105) is made of a metal material with excellent thermal conductivity and not attracted by magnets, and the inner and outer walls of the vacuum cavity (101) are both made of a transparent material with excellent light transmittance.

6. The rotary dynamic heat storage device according to claim 5, characterized in that: The water pipe (2) is made of non-magnetic metal, both ends of the water pipe (2) are configured as hollow structures, and circular holes (201) are provided at the inlet and outlet. A sealing plug (202) is installed in the middle of the water pipe (2).

7. The rotary dynamic heat storage device according to claim 6, characterized in that: The non-magnetic metal is copper or aluminum.

8. The rotary dynamic heat storage device according to claim 1, characterized in that: The surface of the heat collecting block (11) is coated with a high absorption coating (1102), and sunlight is focused by a linear Fresnel lens (3) and then irradiated onto the surface of the high absorption coating (1102).

9. The rotary dynamic heat storage device according to claim 1, characterized in that: The power unit comprises a clockwork device (5), a driven gear (6) and a driving gear (9); the clockwork device (5) is mounted on a water pipe (2); the driving gear (9) is mounted on a power output end of the clockwork device (5); the end of the driven gear (6) is in contact with a side wall of a sealed bearing (10), and the driven gear (6) is meshed with the driving gear (9).

10. The rotary dynamic heat storage device according to claim 1, characterized in that: The lens frame (7) is fixed to the water pipe (2) via bolts (8).

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