Temperature difference implementation method and device

Abstract

The invention discloses a temperature difference implementation method and device, and belongs to the temperature control technology, a temperature difference generator is used for arranging a closed working cavity for accommodating and driving a working medium, the closed working cavity is divided into an evaporation cavity, a liquefaction cavity and a flow channel for connecting the evaporation cavity and the liquefaction cavity, and the liquefaction cavity is arranged around the evaporation cavity as the center; the temperature difference generator is driven to rotate by a rotation driving mechanism, and under the action of rotation centrifugal force, a working medium flows from the evaporation cavity to the liquefaction cavity through a flow channel, pressure difference is generated between the evaporation cavity and the liquefaction cavity, the working medium in the evaporation cavity absorbs heat through gasification, the working medium in the liquefaction cavity releases heat through liquefaction, and the temperature difference is generated between the evaporation cavity and the liquefaction cavity. A low-temperature end and a high-temperature end are formed; the rotating speed is reduced through intermittent regular braking, so that the liquid working medium supplements and flows back to the evaporation cavity through the flow channel; circulating dynamic balance of gasification and liquefaction of the working medium is achieved through centrifugal flowing and supplementary backflow of the working medium, and continuous operation of the whole temperature difference generation process is maintained.

Description

Technical Field

[0001] The present invention belongs to the technical field of temperature control, and in particular relates to a method and device for realizing temperature difference. Background Art

[0002] The production temperature difference is necessary for temperature control and thermal energy utilization such as refrigeration. Modern refrigeration technology achieves temperature difference through the process of compressor compressing refrigerant to liquefy and release heat, and evaporator evaporation to absorb heat, etc., which requires a lot of external work to offset the necessary but unnecessary energy loss in the refrigeration process. How to save energy consumption is the research content in the field of temperature technology control. Summary of the invention

[0003] The purpose of the present invention is to solve the technical problem of how to save energy in the process of achieving temperature difference, and to provide a method and device for achieving temperature difference with low energy consumption.

[0004] To this end, the present invention adopts the following technical scheme: a method for realizing temperature difference, characterized in that a temperature difference generator is used to set a closed working chamber to accommodate and drive a working medium that can realize gas-liquid two-state conversion, the closed working chamber is divided into an evaporation chamber, a liquefaction chamber and a flow channel connecting the evaporation chamber and the liquefaction chamber, and the liquefaction chamber is radially arranged around the evaporation chamber at a certain distance; the temperature difference generator is driven to rotate by a rotary drive mechanism, and the working medium in the closed working chamber flows from the evaporation chamber through the flow channel to the liquefaction chamber through the action of the rotating centrifugal force, and a pressure difference is generated between the evaporation chamber and the liquefaction chamber, and the evaporation chamber is heated and cooled. The working medium pressure of the evaporation chamber decreases, the working medium vaporizes, and absorbs heat; the working medium pressure of the liquefaction chamber increases, the gaseous working medium liquefies, and releases heat, resulting in a temperature difference between the evaporation chamber and the liquefaction chamber, forming a low-temperature end and a high-temperature end; the rotation speed is reduced by intermittent and regular braking, and the liquid working medium can be supplemented and refluxed to the evaporation chamber through the flow channel during the deceleration process; in the alternating process of driving acceleration and braking deceleration, the centrifugal flow and supplementary reflux of the working medium achieve a cyclic dynamic balance of vaporization and liquefaction of the working medium, maintaining the continuous operation of the entire temperature difference generation process.

[0005] In order to reduce the energy consumption required to drive and maintain the rotational motion, the temperature difference generator is placed in a vacuum-sealed inner cavity of a container and supported by magnetic suspension. After the temperature difference generator rotates to a set speed under the drive of the rotation drive mechanism, the rotation drive is stopped and the rotation is maintained by the inertia of the motion.

[0006] The liquefaction chamber is arc-shaped and arranged around the evaporation chamber in a rotating plane. The flow channel is connected to one end of the arc-shaped liquefaction chamber to improve the reflux efficiency of the liquid working medium during braking and deceleration.

[0007] The temperature difference generator includes a plurality of temperature difference generating units axially stacked in series, each temperature difference generating unit independently sets a closed working chamber, heat conduction occurs between the adjacent high temperature end and low temperature end of two adjacent temperature difference generating units, and the temperature difference between the high temperature end and the low temperature end of the entire temperature difference generator is expanded by superimposing the temperature differences of the plurality of temperature difference generating units.

[0008] The method of the present invention can be applied to air-conditioning equipment such as refrigeration and heating, and can also be applied to the field of utilizing the heat of a low-temperature heat source after absorption and transfer.

[0009] A temperature difference realization device, characterized in that: the realization device includes a temperature difference generator, a rotating shaft, a rotating support device, a rotating drive mechanism and a rotating brake mechanism, the temperature difference generator includes at least one temperature difference generating unit, each temperature difference generating unit includes a rotating disk, one of the rotating disks is connected to the rotating shaft and supported by the rotating shaft for rotation, the rotating shaft is vertically arranged and supported and installed by the rotating support device, a cavity is arranged in the rotating disk as a working chamber for accommodating a working medium, the working chamber includes a liquefaction chamber arranged at the outer edge of the rotating disk, an evaporation chamber arranged at the rotation center of the rotating disk, and a flow channel connecting the evaporation chamber and the liquefaction chamber; the liquefaction chamber is arranged around the evaporation chamber with the evaporation chamber as the center and radially spaced a distance from the evaporation chamber; the working chamber is filled with a working medium that can be converted into gas and liquid; the rotating drive mechanism and the rotating brake mechanism produce a rotating drive and braking effect on the rotating shaft.

[0010] The rotating support device includes a container, a suspension support coil and an axial magnet. The container shell includes a temperature difference generator accommodating portion and a rotating shaft accommodating portion. The inner cavities of the temperature difference generator accommodating portion and the rotating shaft accommodating portion are connected and vacuumed to form an internal closed vacuum inner cavity. The temperature difference generator and the rotating shaft are respectively arranged in the inner cavities of the temperature difference generator accommodating portion and the rotating shaft accommodating portion; the axial magnet is fixedly installed on the rotating shaft, the suspension support coil is installed on the outer end of the rotating shaft accommodating portion, and the axial magnet and the suspension support coil cooperate in the axial direction of the rotating shaft to form a magnetic suspension support structure.

[0011] The rotary drive mechanism includes radial magnets and stator coils, the rotary brake mechanism and the rotary drive mechanism share the radial magnets and stator coils, the radial magnets and the rotating shaft are fixed to each other, the stator coils are installed outside the rotating shaft accommodating portion, the stator coils and the radial magnets cooperate in the radial direction of the rotating shaft to form a motor structure and a generator structure that can be converted into each other, and act as a motor during rotary drive and act as a generator during braking and deceleration.

[0012] The liquefaction chamber is a long arc-shaped chamber, the center line of the long arc-shaped chamber is located on the rotation plane of the temperature difference generator, the chord of the center line is located on the side close to the evaporation chamber, and the flow channel is connected to the front end of the long arc-shaped chamber in the rotation direction, thereby improving the liquefaction efficiency of the working medium and the reflux efficiency of the liquid working medium.

[0013] The center line of the flow channel is located on the rotation plane of the temperature difference generator, and the flow channel is in an arc shape convex forward in the rotation direction, thereby improving the reflux efficiency of the liquid working medium during braking and deceleration.

[0014] The temperature difference generator includes a plurality of axially series-connected and stacked temperature difference generating units, each of which includes a rotating disk, the outer edges of two adjacent rotating disks are connected by a connecting piece, and a closed cavity is formed between the disk surfaces at a certain distance. The closed cavity is filled with heat transfer fluid, so that heat conduction occurs between the adjacent high-temperature end and low-temperature end of the two adjacent temperature difference generating units. The temperature difference between the high-temperature end and the low-temperature end of the entire temperature difference generator is expanded by superimposing the temperature differences of multiple temperature difference generating units.

[0015] Each of the temperature difference generating units is provided with a heat conducting sheet connected to the liquefaction chamber, a high-temperature heat conducting chamber is provided on the top side of the temperature difference generating unit accommodating portion of the container, the heat conducting sheet of the topmost temperature difference generating unit is inserted into the high-temperature heat conducting chamber to form a high-temperature end of the entire temperature difference generator, and the heat conducting sheets of other temperature difference generating units extend into the closed cavity between two adjacent temperature difference generating units, and heat is transferred through the heat conducting sheets, thereby improving the heat conduction efficiency.

[0016] A low-temperature heat conduction cavity is arranged at the bottom side of the temperature difference generator accommodating portion of the container, and the bottom end of the evaporation cavity wall of the bottom temperature difference generating unit extends into the low-temperature heat conduction cavity to form the low-temperature end of the entire temperature difference generator, and the bottom ends of the evaporation cavity walls of other temperature difference generating units extend into the closed cavity to generate heat exchange with the heat transfer liquid.

[0017] The rotating disk is composed of an upper disk and a lower disk stacked together, and the flow channel and the liquefaction cavity are grooves opened on the top surface of the lower disk.

[0018] The working medium is a saturated gas selected from the group consisting of xenon, radon, krypton or sulfur hexafluoride.

[0019] When the temperature difference realization device is used, the high temperature end and the low temperature end are respectively connected to the high temperature demand end and the low temperature demand end of the application environment, and heat is transferred from the high temperature end of the temperature difference realization device to the high temperature demand end of the application environment, and the low temperature end of the temperature difference realization device absorbs heat from the low temperature end of the application environment, so as to realize the utilization of the temperature difference. The working process of the present invention is: after starting, the suspension support coil is energized, and cooperates with the axial magnet to form a magnetic suspension support for the temperature difference generator, and the stator coil is energized and cooperates with the radial magnet to form a motor to drive the rotating shaft to rotate, driving the temperature difference generator to rotate in the closed vacuum cavity. The working medium filled in the working chamber generates a pressure difference between the evaporation chamber and the liquefaction chamber under the action of centrifugal force, the working medium pressure in the evaporation chamber decreases, the working medium vaporizes, and heat absorption is generated, the working medium pressure in the liquefaction chamber increases, the gaseous working medium liquefies, and heat release is generated, and a temperature difference is generated between the evaporation chamber and the liquefaction chamber, forming a low temperature end and a high temperature end. After the temperature difference generator rotates for a period of time, the working medium is continuously evaporated and liquefied, and liquid working medium will accumulate in the liquefaction chamber. Switch the stator coil to connect the brake energy storage mechanism to form a generator, start the rotation brake on the temperature difference generator, the temperature difference generator will slow down, and the liquid working medium in the liquefaction chamber will flow back to the evaporation chamber through the flow channel under the action of inertia to replenish the working medium in the evaporation chamber. Then switch the stator coil to the motor working mode, and use the electricity generated by the stored generator to drive the shaft to rotate and accelerate. In this way, the acceleration and deceleration are alternately performed, and the working medium circulates in the evaporation chamber and the liquefaction chamber. The centrifugal flow and supplementary reflux of the working medium achieve a cyclic dynamic balance of gasification and liquefaction of the working medium, maintaining the continuous operation of the entire temperature difference generation process.

[0020] The heat released by the evaporation chamber of the temperature difference generating unit in the bottom layer is quickly transferred to the closed cavity between the temperature difference generating units in the adjacent layer through the heat conducting sheet, and the heat is transferred to the evaporation chamber of the adjacent layer through the heat conducting liquid. Due to the heat conduction of the heat conducting sheet and the convection heat conduction of the heat conducting liquid, good thermal conductivity is achieved, so that the temperature difference between the liquefaction chamber and the evaporation chamber of the two adjacent layers of temperature difference generating units is very small, or even negligible. In this way, after the temperature difference of multiple layers of temperature difference generating units is superimposed, the high temperature end and the low temperature end of the entire temperature difference generator can achieve the temperature difference required for practical use. The heat conducting sheet of the top temperature difference generating unit transfers the heat out of the container through radiation heat conduction, and the bottom temperature difference generating unit absorbs the heat outside the container through radiation heat conduction, so that the high temperature end and the low temperature end of the temperature difference generator can be utilized.

[0021] The use of the present invention can achieve the following beneficial effects: the working medium absorbs heat by vaporization and releases heat by liquefaction through the centrifugal force of the temperature difference generator, thereby generating a usable temperature-sensing end and a low-temperature end; the temperature difference generator is accommodated in a hollow inner cavity of a container and the temperature difference generator is supported by magnetic levitation for rotation, thereby reducing the energy consumption of the temperature difference generation process; the temperature difference is maintained by alternating the cycle of braking deceleration and driving acceleration; and energy is stored and reused during the braking deceleration process, thereby reducing the energy consumption of the temperature difference generation and maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structural principle of the device of the present invention.

[0023] Figure 2 yes Figure 1 AA section view.

[0024] Figure 3 yes Figure 1 BB cross-sectional view. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings. The described embodiments are only for illustration and explanation of the invention and do not constitute the sole limitation of the present invention.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, the implementation device of the present invention includes a temperature difference generator, a rotating shaft 5, a rotating support device, a rotating drive mechanism and a rotating brake mechanism. The temperature difference generator includes two temperature difference generating units axially connected in series and stacked in layers. The number of temperature difference generating units can be increased or decreased according to the temperature difference needs. Each temperature difference generating unit includes a rotating disk, and each rotating disk is composed of an upper disk 9 and a lower disk 11 stacked and fastened by screws, and the stacking surfaces of the upper disk and the lower disk are sealed and connected. The center of the top surface of the upper disk 9 of the top rotating disk is fixedly installed with a shaft seat 7, and the rotating shaft 5 is fixed in the shaft hole of the shaft seat 7, so that the upper disk 9 of the top rotating disk is fixedly connected to the rotating shaft 5 and supported by the rotating shaft for rotation. The rotating shaft 7 is arranged vertically and supported and installed by the rotating support device. The outer edges of two adjacent rotating disks are connected by a connecting piece 15, and a closed cavity 12 is formed between the top surface of the upper disk and the bottom surface of the lower disk of the two adjacent rotating disks. The closed cavity is filled with heat transfer fluid to generate heat conduction between the adjacent high-temperature end and low-temperature end of the two adjacent temperature difference generating units. The temperature difference between the high-temperature end and the low-temperature end of the entire temperature difference generator is expanded by superimposing the temperature difference of multiple temperature difference generating units.

[0027] The rotating support device includes a container 3, a suspension support coil 1 and an axial magnet 4. The container shell includes a temperature difference generator accommodating part 32 and a rotating shaft accommodating part 33. The top of the rotating shaft accommodating part is open and is equipped with a top cover 31 as a vibration damper. The bottom of the rotating shaft accommodating part is connected to the top of the temperature difference generator accommodating part. The inner cavities of the temperature difference generator accommodating part and the rotating shaft accommodating part are connected and vacuumed to form an internal closed vacuum cavity. The temperature difference generator and the rotating shaft are respectively arranged in the inner cavities of the temperature difference generator accommodating part and the rotating shaft accommodating part. The axial magnet 4 is fixedly installed on the top of the rotating shaft, and the suspension support coil 1 is installed on the top of the top cover 31. The axial magnet and the suspension support coil cooperate in the axial direction of the rotating shaft to form a magnetic suspension support structure.

[0028] The rotary drive mechanism includes an annular radial magnet 6 and a stator coil 2, and the rotary brake mechanism and the rotary drive mechanism share the radial magnet 6 and the stator coil 2. The radial magnet 6 is fixedly sleeved on the rotating shaft 5, and the stator coil is fixedly installed outside the rotating shaft accommodating portion 32. The stator coil and the radial magnet cooperate in the radial direction of the rotating shaft to form a motor structure and a generator structure that can be converted to each other. It acts as a motor during rotary drive and as a generator during brake deceleration. The generator is connected to the energy storage mechanism to form a brake energy storage mechanism.

[0029] A cavity is provided in the rotating disk as a working chamber for accommodating the working medium. The working chamber includes a liquefaction chamber 10, an evaporation chamber 13, and a flow channel 16 connecting the evaporation chamber and the liquefaction chamber. The flow channel 16 and the liquefaction chamber 10 are grooves opened on the top surface of the lower disk. The evaporation chamber includes a through hole set at the rotation center of the lower disk and a chamber 13 on the bottom side of the lower disk. An annular protrusion is provided on the bottom surface of the chamber lower disk, and an end cover 14 is installed on the top of the annular protrusion to enclose the chamber 13. A liquid filling hole blocked with a plug is provided on the end cover, and the working medium is filled through the liquid filling hole by unscrewing the plug. The working medium is a saturated gas selected from xenon, radon, krypton or sulfur hexafluoride.

[0030] The liquefaction chamber 10 is a long arc-shaped chamber, the center line of which is located on the rotation plane of the temperature difference generator, and is arranged around the evaporation chamber at a radial distance from the evaporation chamber. The chord of the center line is located on one side close to the evaporation chamber. The center line of the flow channel is located on the rotation plane of the temperature difference generator, and the flow channel is in a forward convex arc shape in the rotation direction. In the rotation direction, the flow channel is smoothly connected to the front end of the long arc-shaped chamber.

[0031] A plurality of heat conducting plate mounting grooves connected to the liquefaction chamber 10 are provided on the lower plate 11 of the rotating plate, and a heat conducting plate 8 is fixedly installed in each heat conducting plate mounting groove, and the heat conducting plate can contact the working medium in the liquefaction chamber. The heat conducting plate passes through the upper plate 9 of the rotating plate, and a high-temperature heat conducting cavity 35 is provided on the top side of the temperature difference generator accommodating portion 33. The heat conducting plate of the topmost temperature difference generating unit is inserted into the high-temperature heat conducting cavity 35. The heat dissipation cover 34 surrounding the high-temperature heat conducting cavity 35 is connected to the temperature difference generator accommodating portion 33, and cooperates with the heat conducting plate 8 to radiate heat to form the high-temperature end of the entire temperature difference generator; the heat conducting plates 8 of other temperature difference generating units have closed cavities 12, and exchange heat with the heat conducting liquid in the closed cavity 12.

[0032] A low-temperature heat conduction cavity 37 is arranged on the bottom side of the temperature difference generator accommodation portion 33, and a heat absorption cover 36 surrounding the low-temperature heat conduction cavity 37 is connected to the temperature difference generator accommodation portion 33. The end cover 14 at the bottom end of the evaporation chamber wall of the bottom temperature difference generating unit extends into the low-temperature heat conduction cavity 37, and cooperates with the heat absorption cover 36 for radiant heat conduction to form the low-temperature end of the entire temperature difference generator; the end covers 14 of other temperature difference generating units extend into the enclosed cavity 12 to generate heat exchange with the heat transfer liquid.

Claims

1. A method for achieving temperature difference, characterized in that: A temperature difference generator is used to set up a closed working chamber to accommodate and drive a working medium that can realize gas-liquid two-state conversion. The closed working chamber is divided into an evaporation chamber, a liquefaction chamber, and a flow channel connecting the evaporation chamber and the liquefaction chamber. The liquefaction chamber is radially arranged around the evaporation chamber at a certain distance. The temperature difference generator is driven to rotate by a rotary drive mechanism. Through the action of the rotating centrifugal force, the working medium in the closed working chamber flows from the evaporation chamber through the flow channel to the liquefaction chamber, and a pressure difference is generated between the evaporation chamber and the liquefaction chamber. The pressure of the working medium in the evaporation chamber is reduced, the working medium is vaporized, and heat absorption is generated. The pressure of the working medium in the liquefaction chamber is increased, the gaseous working medium is liquefied, and heat release is generated. A temperature difference is generated between the evaporation chamber and the liquefaction chamber, forming a low-temperature end and a high-temperature end. The rotation speed is reduced by intermittent braking at regular intervals, so that the liquid working medium can be replenished and refluxed to the evaporation chamber through the flow channel during the deceleration process; in the alternating process of driving acceleration and braking deceleration, the centrifugal flow and replenishment reflux of the working medium achieve a cyclic dynamic balance of gasification and liquefaction of the working medium, maintaining the continuous operation of the entire temperature difference generation process.

2. A temperature difference realization method according to claim 1, characterized in that: The working medium is xenon gas, radon gas, krypton gas or sulfur hexafluoride.

3. A temperature difference realization method according to claim 1, characterized in that: The temperature difference generator is placed in a vacuum-sealed inner cavity of a container and supported in the air by magnetic suspension. After the temperature difference generator is driven by a rotary drive mechanism to rotate to a set speed, the rotary drive is stopped and the rotation is maintained by the inertia of the movement.

4. A temperature difference realization method according to claim 3, characterized in that: The liquefaction chamber is arc-shaped and arranged around the evaporation chamber in a rotating plane, and the flow channel is connected to one end of the arc-shaped liquefaction chamber.

5. A temperature difference realization method according to claim 1, characterized in that: The temperature difference generator includes a plurality of temperature difference generating units axially stacked in series, each temperature difference generating unit independently sets a closed working chamber, heat conduction occurs between the adjacent high temperature end and low temperature end of two adjacent temperature difference generating units, and the temperature difference between the high temperature end and the low temperature end of the entire temperature difference generator is expanded by superimposing the temperature differences of the plurality of temperature difference generating units.

6. A temperature difference realization device, characterized in that: The implementation device includes a temperature difference generator, a rotating shaft, a rotating support device, a rotating drive mechanism and a rotating brake mechanism. The temperature difference generator includes at least one temperature difference generating unit, and each temperature difference generating unit includes a rotating disk, wherein one rotating disk is connected to the rotating shaft and supported by the rotating shaft for rotation, the rotating shaft is vertically arranged and supported and installed by the rotating support device, and a cavity is arranged in the rotating disk as a working chamber for accommodating a working medium. The working chamber includes a liquefaction chamber arranged at the outer edge of the rotating disk, an evaporation chamber arranged at the rotation center of the rotating disk, and a flow channel connecting the evaporation chamber and the liquefaction chamber; the liquefaction chamber is arranged around the evaporation chamber with the evaporation chamber as the center and radially spaced a distance from the evaporation chamber; the working chamber is filled with a working medium that can be converted into gas and liquid; the rotating drive mechanism and the rotating brake mechanism produce a rotating drive and braking effect on the rotating shaft.

7. A temperature difference realization device according to claim 6, characterized in that: The rotating support device includes a container, a suspension support coil and an axial magnet. The container shell includes a temperature difference generator accommodating portion and a rotating shaft accommodating portion. The inner cavities of the temperature difference generator accommodating portion and the rotating shaft accommodating portion are connected and vacuumed to form an internal closed vacuum inner cavity. The temperature difference generator and the rotating shaft are respectively arranged in the inner cavities of the temperature difference generator accommodating portion and the rotating shaft accommodating portion; the axial magnet is fixedly installed on the rotating shaft, the suspension support coil is installed on the outer end of the rotating shaft accommodating portion, and the axial magnet and the suspension support coil cooperate in the axial direction of the rotating shaft to form a magnetic suspension support structure.

8. A temperature difference realization device according to claim 7, characterized in that: The rotary drive mechanism includes radial magnets and stator coils, the rotary brake mechanism and the rotary drive mechanism share the radial magnets and stator coils, the radial magnets and the rotating shaft are fixed to each other, the stator coils are installed outside the rotating shaft accommodating portion, the stator coils and the radial magnets cooperate in the radial direction of the rotating shaft to form a motor structure and a generator structure that can be converted into each other, and act as a motor during rotary drive and act as a generator during braking and deceleration.

9. A temperature difference realization device according to claim 8, characterized in that: The liquefaction chamber is a long arc-shaped chamber, the center line of which is located on the rotation plane of the temperature difference generator, the chord of which is located on one side close to the evaporation chamber, and the flow channel is connected to the front end of the long arc-shaped chamber in the rotation direction.

10. A temperature difference realization device according to claim 9, characterized in that: The center line of the flow channel is located on the rotation plane of the temperature difference generator, and the flow channel is in an arc shape convex forward in the rotation direction, thereby improving the reflux efficiency of the liquid working medium during braking and deceleration.

11. A temperature difference realization device according to claim 6, characterized in that: The temperature difference generator includes a plurality of axially series-connected and stacked temperature difference generating units, each of which includes a rotating disk. The outer edges of two adjacent rotating disks are connected by a connecting piece, and a closed cavity is formed between the disk surfaces at a certain distance. The closed cavity is filled with heat transfer fluid, so that heat conduction occurs between the adjacent high-temperature end and the low-temperature end between the two adjacent temperature difference generating units.

12. A temperature difference realization device according to claim 11, characterized in that: Each of the temperature difference generating units is provided with a heat conducting sheet connected to the liquefaction chamber, a high-temperature heat conducting chamber is provided on the top side of the temperature difference generating unit accommodating portion of the container, the heat conducting sheet of the topmost temperature difference generating unit is inserted into the high-temperature heat conducting chamber to form the high-temperature end of the entire temperature difference generator, and the heat conducting sheets of the other temperature difference generating units extend into the closed cavity between two adjacent temperature difference generating units.

13. A temperature difference realization device according to claim 11, characterized in that: A low-temperature heat conduction cavity is arranged at the bottom side of the temperature difference generator accommodating portion of the container, and the bottom end of the evaporation cavity wall of the bottom temperature difference generating unit extends into the low-temperature heat conduction cavity to form the low-temperature end of the entire temperature difference generator, and the bottom ends of the evaporation cavity walls of other temperature difference generating units extend into the closed cavity to generate heat exchange with the heat transfer liquid.

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