Device for converting heat energy into kinetic energy and electric energy

Abstract

The utility model relates to a device for converting heat energy into kinetic energy and electric energy, which comprises a heat energy collecting device for collecting heat energy and heating normal-temperature air in the heat energy collecting device to form high-pressure gas by using the heat energy; the heat energy conversion device is driven by the high-pressure gas to do work to convert heat energy into kinetic energy and / or electric energy; and the air injection device is driven by the heat energy conversion device to inject normal-temperature air into the heat energy collection device. The device for converting the heat energy into the kinetic energy and the electric energy supports parallel input of multiple heat sources and concentrated output of the kinetic energy.

Description

Technical Field

[0001] This utility model relates to the field of energy conversion and utilization technology, and specifically to a device that converts thermal energy into kinetic energy and electrical energy. Background Technology

[0002] Currently, in scenarios such as transportation, electronic equipment operation, and building heating, a large amount of low-grade heat energy is directly emitted into the environment due to the lack of efficient recovery methods, which not only causes energy waste but also exacerbates the greenhouse effect and environmental thermal pollution.

[0003] For example, automotive internal combustion engines typically use fuel combustion as their power source, converting the chemical energy of the fuel into kinetic energy. However, only about 30% of the chemical energy is converted into kinetic energy during fuel combustion, resulting in low conversion efficiency. The remaining nearly 70% of the chemical energy is converted into other forms of energy, such as heat. This heat is directly released into the air, causing significant energy waste. Furthermore, large amounts of heat energy are wasted in the high-temperature flue gas from boiler chimneys, the high-temperature flue gas emitted from chimneys in various kilns, and from waste incineration.

[0004] Currently, heat recovery technologies mainly focus on three areas: thermoelectric conversion, heat engine cycles, and energy storage systems. Thermoelectric materials (such as bismuth telluride-based semiconductors) can directly convert heat energy into electrical energy through the Seebeck effect, but their conversion efficiency is generally below 8%, and the materials are expensive, making large-scale application difficult. Steam power systems, represented by the Rankine cycle, can achieve the cascade utilization of medium- and high-temperature heat energy (>250℃), but the systems are complex, bulky, and have extremely high requirements for heat source stability, making them unsuitable for intermittent waste heat scenarios. While external combustion heat engines such as the Stirling engine have theoretically high thermodynamic efficiency, their maintenance costs are significantly increased due to stringent sealing requirements and high mechanical losses in practical applications, limiting their promotion in distributed scenarios. Against this backdrop, there is an urgent need to develop a new type of heat-to-kinetic energy conversion device. Utility Model Content

[0005] The purpose of this invention is to provide a device that converts thermal energy into kinetic energy and electrical energy.

[0006] To solve the above problems, a device for converting thermal energy into kinetic energy and electrical energy is provided, comprising:

[0007] A heat collection device is used to collect heat energy and use the heat energy to heat the room-temperature air inside to form high-pressure gas.

[0008] A thermal energy conversion device, driven by high-pressure gas, converts thermal energy into kinetic energy and / or into electrical energy.

[0009] An air injection device, driven by a heat energy conversion device, injects ambient temperature air into a heat energy collection device.

[0010] Furthermore, the heat collection device includes a heat collection container with a high-temperature fluid conduit inside. High-temperature fluid enters the high-temperature fluid conduit through a high-temperature fluid inlet pipe outside the heat collection container. After heat exchange with the ambient air inside the heat collection container, the high-temperature fluid exits the heat collection container through a high-temperature fluid outlet pipe. The heat collection container can have multiple high-temperature fluid conduits connected in parallel to accommodate different high-temperature fluids. For example, when this device is installed in a car, the hot water generated by the engine and the high-temperature exhaust gas generated by the exhaust pipe can enter different high-temperature fluid conduits to exchange heat with the ambient air. The principle of this heat collection container is the same as that of a heat exchanger.

[0011] Furthermore, the air injection device is an air compressor, which is equipped with an air inlet and an exhaust pipe. Room temperature air enters the air compressor through the air inlet, and the exhaust pipe of the air compressor is connected to the heat collection container, thus injecting room temperature air into the heat collection container. The room temperature air inside the heat collection container is heated to form high-pressure gas. The air compressor can be a piston air compressor, a connecting rod air compressor, a screw air compressor, etc.

[0012] Furthermore, the heat energy conversion device is a pneumatic motor, which is equipped with an air inlet pipe and an exhaust port. High-pressure gas enters the pneumatic motor through the air inlet pipe and is discharged through the exhaust port, driving the pneumatic motor to perform work and generate kinetic energy and / or electrical energy. The pneumatic motor is connected to an air compressor via a power transmission device. The pneumatic motor can be a vane starter, a piston pneumatic motor, a turbofan pneumatic motor, etc.; the power transmission device can be a gear, belt, chain, coupling, clutch, drive shaft, worm gear, etc.

[0013] Furthermore, in order to reduce heat loss and monitor the pressure inside the heat collection container in a timely manner, the heat collection container is equipped with a pressure gauge and has an insulation layer on its outer surface.

[0014] Furthermore, to facilitate control over whether high-pressure gas enters the pneumatic motor, a valve is installed in the pneumatic motor's inlet pipe; a check valve is installed in the compressor's exhaust pipe. The check valve prevents gas in the heat collection container from flowing back into the air compressor.

[0015] Furthermore, the power transmission device between the pneumatic motor and the air compressor is equipped with a gearbox. This gearbox is used to adjust the speed of the air compressor, thereby controlling the amount of ambient temperature air injected into the heat collection container.

[0016] Furthermore, the aforementioned heat collection container is a hybrid internal and external heating container, capable of heating ambient air via a high-temperature fluid conduit or by external heating. For example, when no high-temperature fluid enters the high-temperature fluid conduit, external heating can be used to heat the ambient gas inside the heat collection container to form high-pressure gas. For example, the heat collection container can be directly heated with combustibles, immersed in a high-temperature liquid, or placed inside a kiln chimney or a thermal power plant chimney.

[0017] The working principle of this device is as follows: the thermal energy of the high-temperature fluid or external thermal energy is converted into high-pressure gas by the heat collection container. The high-pressure gas drives the pneumatic motor to rotate, generating power. This power can be used to output kinetic energy or connected to a generator to output electrical energy. In addition, the power output of the pneumatic motor drives the air compressor to continuously inject room-temperature air into the heat collection container. The high temperature inside the heat collection container will rapidly heat up the room-temperature air, causing it to expand and form high-pressure gas. The high-pressure gas powers the pneumatic motor, and a portion of the power from the pneumatic motor is transmitted to the air compressor.

[0018] The heat sources for the heat collection container in this device include, but are not limited to: high-temperature flue gas from boiler chimneys, high-temperature flue gas from various kilns, hot water from automobile engines, and high-temperature flue gas from exhaust pipes; the heat collection container is also heated directly by combustible materials. To increase the heating surface area and allow room-temperature air to absorb more external heat, the heat collection container can be made into a spiral pipe structure.

[0019] As ambient air is continuously injected into the heat collection container, it is heated into high-pressure gas. The pneumatic motor performs uninterrupted work and outputs power, converting thermal energy into kinetic energy or electrical energy. During the conversion process, there is little energy loss and the utilization rate of waste heat energy is high. The high-pressure gas continuously provides power to the pneumatic motor, driving the steam turbine to perform work, so as to continuously output energy to the outside world.

[0020] The device in this invention that converts thermal energy into kinetic and electrical energy supports parallel input of multiple heat sources and centralized output of kinetic energy. Attached Figure Description

[0021] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0022] In the attached diagram:

[0023] Figure 1 This is a schematic diagram of the device of this invention that converts thermal energy into kinetic energy and electrical energy;

[0024] Figure 2 This is a schematic diagram of a high-temperature fluid conduit inside a heat collection container.

[0025] 1. Heat collection container; 11. High-temperature fluid conduit; 12. High-temperature fluid inlet pipe; 13. High-temperature fluid outlet pipe; 14. Pressure gauge;

[0026] 2. Pneumatic motor; 21. Intake pipe; 22. Exhaust port; 23. Power transmission device; 24. Gearbox; 25. Valve;

[0027] 3. Air compressor; 31. Air inlet; 32. Exhaust pipe; 33. Check valve. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0029] This invention provides a device for converting thermal energy into kinetic energy and electrical energy, comprising:

[0030] A heat collection device is used to collect heat energy and use it to heat the ambient air inside the device to form a high-pressure gas. The heat collection device includes a heat collection container 1, which has at least one high-temperature fluid conduit 11. High-temperature fluid enters the high-temperature fluid conduit 11 through a high-temperature fluid inlet pipe 12 outside the heat collection container 1. After heat exchange with the ambient air inside the heat collection container, the high-temperature fluid exits the heat collection container 1 through a high-temperature fluid outlet pipe 13. To reduce heat loss and monitor the pressure inside the heat collection container, a pressure gauge 14 is installed, and the outer surface of the heat collection container is covered with an insulation layer. The heat collection container is a hybrid internal and external heating container, capable of heating the ambient air inside via the high-temperature fluid conduit 11 or through external heating.

[0031] A heat energy conversion device, driven by high-pressure gas, converts heat energy into kinetic energy and / or electrical energy. The heat energy conversion device is a pneumatic motor 2, which is equipped with an inlet pipe 21 and an exhaust port 22. High-pressure gas enters the pneumatic motor 2 through the inlet pipe 21 and exits through the exhaust port 22, driving the pneumatic motor to generate kinetic energy and / or electrical energy. The pneumatic motor is connected to an air compressor 3 via a power transmission device 23. The power transmission device 23 between the pneumatic motor 2 and the air compressor 3 is equipped with a gearbox 24.

[0032] An air injection device, driven by a heat energy conversion device, injects ambient temperature air into a heat energy collection device. The air injection device is an air compressor 3, which is equipped with an air inlet 31 and an exhaust pipe 32. Ambient temperature air enters the air compressor 3 through the air inlet 31, and the exhaust pipe 32 of the air compressor 3 is connected to the heat collection container 1. The ambient temperature air in the heat collection container 1 is heated to form high-pressure gas.

[0033] Furthermore, the air inlet pipe 21 of the pneumatic motor 2 is equipped with a valve 25; the exhaust pipe 32 of the compressor 3 is equipped with a check valve 33. The check valve prevents gas in the heat collection container from flowing back into the air compressor.

[0034] The working principle of this device is as follows: the thermal energy of the high-temperature fluid or external thermal energy is converted into high-pressure gas by the heat collection container 1. The high-pressure gas drives the pneumatic motor 2 to rotate, generating power. This power can be used to output kinetic energy or connected to a generator to output electrical energy. In addition, the power output of the pneumatic motor 2 drives the air compressor 3 to continuously inject room-temperature air into the heat collection container 1. The high temperature inside the heat collection container 1 will rapidly heat up the room-temperature air, causing it to expand and form high-pressure gas. The high-pressure gas powers the pneumatic motor 2, and a portion of the power from the pneumatic motor 2 is transmitted to the air compressor 3.

[0035] The heat sources for the heat collection container 1 in this device include, but are not limited to: high-temperature flue gas from boiler chimneys, high-temperature flue gas from various kilns, and high-temperature flue gas from the exhaust pipes of car engine water heaters; the heat collection container is also heated directly by external combustion materials. To increase the heating area and allow room-temperature air to absorb more external heat, the heat collection container can be made into a spiral pipe structure.

[0036] As ambient air is continuously injected into the heat collection container 1, it is heated into high-pressure gas. The pneumatic motor 2 performs uninterrupted work and outputs power, converting thermal energy into kinetic energy or electrical energy. During the conversion process, there is little energy loss and the utilization rate of waste heat energy is high. The high-pressure gas continuously provides power to the pneumatic motor 2, continuously outputting energy to the outside world.

[0037] Based on the working principles and performance parameters of heat exchangers, pneumatic motors, and air compressors, it can be seen that theoretically, it is entirely possible for this invention to convert thermal energy into kinetic or electrical energy. The above embodiments are merely one preferred embodiment of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made to the shape, structure, and principle of this invention should be covered within the scope of protection of this invention.

Claims

1. A device for converting thermal energy into kinetic energy and electrical energy, characterized in that, include: A heat collection device is used to collect heat energy and use the heat energy to heat the room-temperature air inside to form high-pressure gas. A thermal energy conversion device, driven by high-pressure gas, converts thermal energy into kinetic energy and / or into electrical energy. An air injection device, driven by a heat energy conversion device, injects ambient temperature air into a heat energy collection device. The heat collection device includes a heat collection container, which is equipped with a high-temperature fluid conduit. The high-temperature fluid enters the high-temperature fluid conduit through a high-temperature fluid inlet pipe outside the heat collection container. After exchanging heat with the room temperature air inside the heat collection container, the high-temperature fluid is discharged from the heat collection container through a high-temperature fluid outlet pipe. The air injection device is an air compressor, which is equipped with an air inlet and an exhaust pipe. Room temperature air enters the air compressor through the air inlet, and the exhaust pipe of the air compressor is connected to the heat collection container. The room temperature air in the heat collection container is heated to form high-pressure gas. The heat energy conversion device is a pneumatic motor, which is equipped with an air inlet pipe and an exhaust port. High-pressure gas enters the pneumatic motor through the air inlet pipe and is discharged through the exhaust port, driving the pneumatic motor to do work and generate kinetic energy and / or electrical energy. The pneumatic motor is connected to an air compressor via a power transmission device.

2. The device for converting thermal energy into kinetic energy and electrical energy according to claim 1, characterized in that, The heat collection container is equipped with a pressure gauge and has an insulation layer on its outer surface.

3. The device for converting thermal energy into kinetic energy and electrical energy according to claim 1, characterized in that, The pneumatic motor intake pipe is equipped with a valve; the compressor exhaust pipe is equipped with a check valve.

4. The device for converting thermal energy into kinetic energy and electrical energy according to claim 1, characterized in that, The power transmission device for the pneumatic motor and air compressor is equipped with a gearbox.

5. The device for converting thermal energy into kinetic energy and electrical energy according to claim 1, characterized in that, The heat collection container is a hybrid internal and external heating container, which can heat room temperature air through the internal high-temperature fluid, or heat the room temperature air inside through external heating.

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