Waste heat recovery device for oil gas cylinder of air compressor

Abstract

The utility model relates to an air compressor oil gas cylinder waste heat recovery device which comprises an oil gas cylinder body, a heat conduction module, a temperature difference power generation module and a heat dissipation module, the heat conduction module is attached to the outer wall of the oil gas cylinder body, and the temperature difference power generation module is attached to the outer side of the heat conduction module. The hot end of the thermoelectric power generation module is in contact with the heat conduction module, and the cold end of the thermoelectric power generation module is connected with the heat dissipation module. The heat conduction module, the temperature difference power generation module and the heat dissipation module are integrated on the outer wall of the oil gas cylinder body, the heat conduction module rapidly conducts waste heat of the oil gas cylinder to the hot end of the temperature difference power generation module, the cold end forms temperature difference driving power generation through the heat dissipation module, and therefore efficient waste heat recovery and electric energy conversion are achieved; and the oil gas cylinder body, the heat conduction module, the temperature difference power generation module and the heat dissipation module form a compact interlayer type integrated structure, extra space does not need to be occupied, the overall structure is compact, the energy utilization rate is high, and the emission reduction effect is remarkable.

Description

Air compressor oil-gas cylinder waste heat recovery device Technical Field

[0001] This utility model relates to the field of air compressor technology, and in particular to a waste heat recovery device for air compressor oil and gas cylinders. Background Technology

[0002] Air compressors, as widely used power equipment in the industrial field, generate a large amount of waste heat (typically ranging from 75℃ to 115℃) during operation. Traditional waste heat recovery technologies mainly achieve heat recovery through natural heat dissipation or external / internal heat exchange devices, but these technologies have the following significant drawbacks:

[0003] 1) Low recycling efficiency

[0004] Traditional technologies rely on natural heat dissipation or a single heat exchange structure (such as plate heat exchangers and stainless steel tube heat exchangers), in which heat is indirectly transferred through air or cooling water, resulting in significant heat loss.

[0005] 2) Complex structure and high maintenance cost

[0006] Traditional solutions require the installation of separate heat exchange equipment (such as external cooling towers or plate heat exchangers), resulting in a large space requirement.

[0007] 3) Thermoelectric conversion was not achieved.

[0008] Existing technologies mostly convert waste heat into hot water or low-temperature heat energy (such as domestic water and factory heating), but do not directly utilize thermoelectric conversion technology to convert waste heat into electrical energy for reuse, resulting in energy waste. Summary of the Invention

[0009] The purpose of this utility model is to provide a waste heat recovery device for air compressor oil and gas cylinders, which solves the problems of low efficiency, complex structure and insufficient secondary energy utilization of existing waste heat recovery technologies.

[0010] To achieve the above objectives, this utility model provides a waste heat recovery device for an air compressor oil-gas cylinder, including an oil-gas cylinder body, a heat-conducting module, a thermoelectric power generation module, and a heat dissipation module. The heat-conducting module is attached to the outer wall of the oil-gas cylinder body, the thermoelectric power generation module is attached to the outer side of the heat-conducting module, and the hot end of the thermoelectric power generation module is in contact with the heat-conducting module, while the cold end of the thermoelectric power generation module is connected to the heat dissipation module.

[0011] Optionally, the heat-conducting module is a heat pipe array.

[0012] Optionally, the heat pipe array is arranged around the outer wall of the oil and gas cylinder body.

[0013] Optionally, the heat pipe array includes multiple independently arranged annular heat pipes, which are arranged in parallel around the outer wall of the oil and gas cylinder body.

[0014] Optionally, the heat pipe array includes multiple independently arranged spiral heat pipes, which are spaced apart and surround the outer wall of the oil and gas cylinder body.

[0015] Optionally, the heat-conducting module is fixed to the outer wall of the oil and gas cylinder body by heat-conducting adhesive or welding.

[0016] Optionally, the heat dissipation module consists of several heat sinks, which are attached to the cold end of the thermoelectric power generation module.

[0017] Optionally, the heat sink is an aluminum heat sink.

[0018] Optionally, the heat dissipation module is threadedly connected to the thermoelectric power generation module.

[0019] Optionally, the waste heat recovery device for the air compressor oil cylinder further includes a voltage stabilizing circuit and a DC-DC converter. The input terminal of the voltage stabilizing circuit is connected to the output terminal of the thermoelectric generator module, the output terminal of the voltage stabilizing circuit is connected to the input terminal of the DC-DC converter, and the output terminal of the DC-DC converter is connected to a load or an energy storage unit.

[0020] In the waste heat recovery device for air compressor oil cylinders provided by this utility model, a heat conduction module, a thermoelectric generator (TEG) module, and a heat dissipation module are integrated on the outer wall of the oil cylinder body. The heat conduction module quickly conducts the waste heat of the oil cylinder to the hot end of the thermoelectric generator module, and the cold end generates electricity through the temperature difference driven by the heat dissipation module, thereby realizing efficient recovery of waste heat and conversion of electrical energy. Moreover, the oil cylinder body, heat conduction module, thermoelectric generator module, and heat dissipation module form a compact sandwich integrated structure, which does not require additional space. The overall structure is compact, the energy utilization rate is high, and the emission reduction effect is significant. It solves the problems of low efficiency, complex structure, and insufficient secondary energy utilization of existing waste heat recovery technologies, and is suitable for energy-saving retrofitting of industrial air compressors. Attached Figure Description

[0021] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:

[0022] Figure 1 is a schematic diagram of the structure of the waste heat recovery device for the air compressor oil cylinder provided in an embodiment of the present invention.

[0023] in:

[0024] 100-Oil / gas cylinder body; 200-Heat conduction module; 300-Thermoelectric power generation module; 400-Heat dissipation module; 500-Voltage stabilizing circuit; 600-DC-DC converter. Detailed Implementation

[0025] To make the objectives, advantages, and features of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are in a very simplified form and use non-precise proportions, intended only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings for a clearer understanding of the objectives, features, and advantages of this utility model. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes and to enable those skilled in the art to understand and read the content disclosed in the specification. They are not intended to limit the implementation conditions of this utility model. Any modifications to the structure, changes in proportions, or adjustments to the size, provided they produce the same or similar effects and achieve the same objectives as this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0026] As used in this invention, the singular forms “a,” “an,” and “the” include plural objects unless otherwise expressly indicated. As used in this invention, the term “or” is generally used to include “and / or” unless otherwise expressly indicated. As used in this invention, the term “a number” is generally used to include “at least one” unless otherwise expressly indicated. As used in this invention, the term “at least two” is generally used to include “two or more” unless otherwise expressly indicated. Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Referring to Figure 1, this embodiment provides a waste heat recovery device for an air compressor oil cylinder, including an oil cylinder body 100, a heat conduction module 200, a thermoelectric generator module 300, and a heat dissipation module 400. The heat conduction module 200 is attached to the outer wall of the oil cylinder body, and the thermoelectric generator module 300 is attached to the outer side of the heat conduction module 200. The hot end of the thermoelectric generator module 300 is in contact with the heat conduction module 200, and the cold end of the thermoelectric generator module 300 is connected to the heat dissipation module 400.

[0029] In this embodiment, the heat conduction module 200, the thermoelectric generator module 300 (TEG), and the heat dissipation module 400 are integrated on the outer wall of the oil and gas cylinder body 100. The heat conduction module 200 quickly conducts the waste heat of the oil and gas cylinder body 100 to the hot end of the thermoelectric generator module 300, and the cold end generates electricity through the temperature difference driven by the heat dissipation module 400, thereby realizing efficient recovery of waste heat and conversion of electrical energy.

[0030] Specifically, in this embodiment, the waste heat recovery device is applicable to the oil-gas separator of an existing air compressor. The main function of the oil-gas separator is to separate the lubricating oil in the compressed air to ensure air quality.

[0031] Preferably, the heat-conducting module 200 is a heat pipe array. A heat pipe array is a heat transfer system that integrates multiple independent heat pipes to form a collaborative working system. Its core lies in utilizing the efficient phase change heat transfer characteristics of microscale heat pipes, combined with optimized structural design, to achieve comprehensive thermal performance far exceeding that of a single heat pipe.

[0032] In this embodiment, since the oil and gas cylinder body 100 is cylindrical, the heat pipe array is arranged around the outer wall of the oil and gas cylinder body 100.

[0033] As a preferred example in this embodiment, the heat pipe array includes multiple independently arranged annular heat pipes, which are arranged in parallel around the outer wall of the oil and gas cylinder body 100. The size, number, and spacing of the annular heat pipes can be selected according to the size of the oil and gas cylinder body 100, and this utility model does not limit them.

[0034] As another preferred example in this embodiment, the heat pipe array includes multiple independently arranged spiral heat pipes, which are spaced apart and surround the outer wall of the oil and gas cylinder body 100. Similarly, the size, number, and spacing of the spiral heat pipes can be selected according to the size of the oil and gas cylinder body 100, and this utility model does not limit them in this regard.

[0035] In this embodiment, the heat-conducting module 200 is fixed to the outer wall of the oil and gas cylinder body 100 by thermally conductive adhesive or welding. The thermally conductive adhesive can be silicone thermally conductive adhesive. By combining the thermally conductive adhesive with optimized contact surface thermal resistance, the overall heat conduction efficiency is improved by more than 30%. This utility model does not limit this method. Of course, in addition to adhesive fixing and welding fixing, snap-fit ​​connections or thermally conductive adhesive + snap-fit ​​connections can also be used for fixing, and this utility model will not list them all.

[0036] In this embodiment, the thermoelectric power generation module 300, as a key component, is a solid-state energy conversion device based on the thermoelectric effect. Its core function is to directly convert thermal energy into electrical energy by utilizing the carrier migration characteristics within the material. When a temperature difference exists between the hot and cold ends of the thermoelectric power generation module 300, carriers (electrons or holes) diffuse from the high-temperature end to the low-temperature end driven by the concentration gradient, forming a potential difference. This embodiment couples the thermoelectric power generation module 300 with a heat pipe array, utilizing the efficient heat transfer characteristics of the heat pipe array. Simultaneously, a heat dissipation module 400 is installed at the cold end to create a stable temperature difference, achieving efficient conversion of thermal energy into electrical energy.

[0037] In this embodiment, the heat dissipation module 400 consists of several heat sinks, which are attached to the cold end of the thermoelectric power generation module 300. In this embodiment, the heat sinks are annular and surround the thermoelectric power generation module 300. The oil-gas cylinder body 100, the heat conduction module 200, the thermoelectric power generation module 300, and the heat dissipation module 400 form a compact, sandwich-type integrated structure, requiring no additional space. This invention does not limit the number, size, or arrangement of the heat sinks; they can be selected according to actual needs.

[0038] Optionally, the heat sink can be made of aluminum. Aluminum heat sinks have advantages such as high thermal conductivity, corrosion resistance, and lightweight, making them a better choice.

[0039] In this embodiment, the heat dissipation module 400 and the thermoelectric power generation module 300 are connected by threads. Of course, in addition to threaded connection, the heat dissipation module 400 can also be fixed by heat transfer adhesive, snap-fit ​​connection, or a combination of both. This utility model does not limit the method.

[0040] Preferably, the waste heat recovery device for the air compressor oil-gas cylinder further includes a voltage stabilizing circuit 500 and a DC-DC converter 600. The input terminal of the voltage stabilizing circuit 500 is connected to the output terminal of the thermoelectric generator module 300, and the output terminal of the voltage stabilizing circuit 500 is connected to the input terminal of the DC-DC converter 600. The output terminal of the DC-DC converter 600 is connected to a load or energy storage unit. The DC power generated by the thermoelectric generator module 300 is directly input to the voltage stabilizing circuit 500 for voltage stabilization, and then the voltage is adjusted by the DC-DC converter 600 to adapt to different loads or energy storage requirements. This load may be used by an air compressor control system or a low-power device (such as a sensor), and this invention does not limit this application.

[0041] In summary, this utility model embodiment provides a waste heat recovery device for an air compressor oil cylinder. By integrating a heat-conducting module 200, a thermoelectric generator module 300 (TEG), and a heat dissipation module 400 onto the outer wall of the oil cylinder body 100, the heat-conducting module 200 rapidly conducts the waste heat of the oil cylinder body 100 to the hot end of the thermoelectric generator module 300, while the cold end generates electricity through the heat dissipation module 400, thereby achieving efficient waste heat recovery and electrical energy conversion. Furthermore, the oil cylinder body 100, heat-conducting module 200, thermoelectric generator module 300, and heat dissipation module 400 form a compact, sandwich-type integrated structure, requiring no additional space.

[0042] Furthermore, it should be understood that although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the present invention. For any person skilled in the art, many possible variations and modifications can be made to the present invention's technical solutions using the disclosed technical content, or equivalent embodiments can be modified accordingly, without departing from the scope of the present invention's technical solutions. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention's technical solutions, shall still fall within the protection scope of the present invention's technical solutions.

Claims

1. A waste heat recovery device for an air compressor oil-gas cylinder, characterized in that, The device includes an oil and gas cylinder body, a heat conduction module, a thermoelectric power generation module, and a heat dissipation module. The heat conduction module is attached to the outer wall of the oil and gas cylinder body, the thermoelectric power generation module is attached to the outside of the heat conduction module, and the hot end of the thermoelectric power generation module is in contact with the heat conduction module, while the cold end of the thermoelectric power generation module is connected to the heat dissipation module.

2. The waste heat recovery device for the air compressor oil-gas cylinder according to claim 1, characterized in that, The heat-conducting module is a heat pipe array.

3. The air compressor oil gas cylinder waste heat recovery device according to claim 2, characterized in that, The heat pipe array is arranged around the outer wall of the oil and gas cylinder body.

4. The air compressor oil gas cylinder waste heat recovery device according to claim 3, characterized in that, The heat pipe array includes multiple independently arranged annular heat pipes, which are arranged in parallel around the outer wall of the oil and gas cylinder body.

5. The waste heat recovery device for the air compressor oil-gas cylinder according to claim 3, characterized in that, The heat pipe array includes multiple independently arranged spiral heat pipes, which are spaced around the outer wall of the oil and gas cylinder body.

6. The air compressor oil gas cylinder waste heat recovery device according to claim 1, characterized in that, The heat-conducting module is fixed to the outer wall of the oil and gas cylinder body by heat-conducting adhesive or welding.

7. The air compressor oil gas cylinder waste heat recovery device according to claim 1, characterized in that, The heat dissipation module consists of several heat sinks, which are attached to the cold end of the thermoelectric power generation module.

8. The air compressor oil gas cylinder waste heat recovery device according to claim 7, characterized in that, The heat sink is an aluminum heat sink.

9. The waste heat recovery device for the air compressor oil-gas cylinder according to claim 7, characterized in that, The heat dissipation module is threadedly connected to the thermoelectric power generation module.

10. The waste heat recovery device for the air compressor oil-gas cylinder according to claim 1, characterized in that, The waste heat recovery device for the air compressor oil cylinder also includes a voltage stabilizing circuit and a DC-DC converter. The input terminal of the voltage stabilizing circuit is connected to the output terminal of the thermoelectric generator module, the output terminal of the voltage stabilizing circuit is connected to the input terminal of the DC-DC converter, and the output terminal of the DC-DC converter is connected to a load or an energy storage unit.

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