Graphite full-oil-free air compressor
The efficient heat dissipation system, consisting of a condenser, heat conduction plate, cooling fan, and circulating fan, combined with a soundproof enclosure and filtration system, solves the problems of slow heat dissipation and high noise in graphite oil-free air compressors. It achieves stable operation with low temperature, low noise, and low vibration, extends equipment life, and ensures air purity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINGMEN GUOYU GRAPHITE EQUIPMENT MANUFACTURING CO LTD
- Filing Date
- 2025-09-24
- Publication Date
- 2026-07-21
AI Technical Summary
Existing graphite oil-free air compressors have slow heat dissipation and are subject to many restrictions on the operating environment, requiring good ventilation and low ambient temperature.
It employs an active cooling cycle loop consisting of a condenser and a heat-conducting plate, combined with a cooling fan and a circulating fan for efficient heat dissipation. It uses a soundproof box to reduce noise, a buffer pad to reduce vibration, a filter plate and a sound-absorbing block to reduce noise, and a multi-stage filtration system in the air intake pipe to ensure clean air.
It achieves stable operation with low temperature, low noise, and low vibration under high-intensity work, extends equipment life, ensures air purity, and improves the working environment.
Smart Images

Figure CN224532913U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air compressor technology, and in particular to a graphite oil-free air compressor. Background Technology
[0002] Oil-free air compressors are the main components of air supply devices. They are devices that convert the mechanical energy of a prime mover into gas pressure energy and generate compressed air. Graphite oil-free air compressors are a type of air compressor that uses self-lubricating materials (mainly graphite) as friction pairs for moving parts. Their core feature is that the compression chamber and all parts in contact with compressed air do not require any lubricating oil, thus producing oil-free, pure compressed air.
[0003] Without oil for cooling and lubrication, the heat generated by friction cannot be effectively dissipated, resulting in a compressor operating temperature much higher than that of oil-lubricated compressors. High temperatures accelerate the aging and wear of materials. Currently, the main heat dissipation methods are air cooling and heat sinks to dissipate heat. These devices have a slow heat dissipation effect and require a well-ventilated environment with low ambient temperature, which imposes many limitations on their use. Utility Model Content
[0004] The purpose of this invention is to solve the problems in the existing technology where the main heat dissipation methods are air cooling and heat sinks, which have slow heat dissipation effects and require good ventilation and low ambient temperature, thus limiting their use. Therefore, this invention proposes a graphite oil-free air compressor.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A graphite-based oil-free air compressor includes a storage tank, a control box fixedly connected to the top of the storage tank, a fixed bracket fixedly connected to the top of the storage tank, a buffer block fixedly connected to the top of the fixed bracket, and a motor fixedly connected to the top of the buffer block. It also includes: A heat dissipation assembly, comprising a soundproof box fixedly connected to the top of the storage tank, a condenser fixedly connected to the outside of the soundproof box, and a condenser pipe fixedly connected to the output end of the condenser, wherein the condenser pipe is disposed outside the motor; The auxiliary components include a cooling fan and a heat-conducting plate fixedly connected inside the motor, and a circulating fan fixedly connected inside the soundproof box.
[0006] As a preferred technical solution of this application, filter plates are fixedly connected to both ends of the motor, the interior of the filter plates is a cavity, and a sound-absorbing block is fixedly connected inside the cavity. The filter plates are located on one side of the cooling fan.
[0007] As a preferred technical solution of this application, the motor is externally fixedly connected with a number of heat sinks, and the condenser tube is externally attached to the outside of the heat sinks.
[0008] As a preferred technical solution of this application, the soundproof box has mounting holes on both sides inside, and a buffer pad is fixedly connected inside the mounting hole. The inside of the buffer pad is attached to the outside of the motor.
[0009] As a preferred technical solution of this application, a plurality of circulating fans are provided, and the plurality of circulating fans are arranged alternately on both sides of the motor.
[0010] As a preferred technical solution of this application, an air intake pipe is fixedly connected to the top of the motor, and a plurality of filter layers are provided inside the air intake pipe, and a filter cover is fixedly connected to the air intake end of the air intake pipe.
[0011] As a preferred technical solution of this application, an installation ring is fixedly connected inside the air intake pipe, and a Velcro fastener is fixedly connected to the upper surface of the installation ring, with the bottom of the filter layer attached to the upper surface of the Velcro fastener.
[0012] Compared with the prior art, this utility model provides a graphite oil-free air compressor, which has the following beneficial effects: 1. The condenser injects a cooler medium into the condenser tube. As the cooler flows, it carries away the heat dissipated by the motor and the heat sink. The heat-conducting plate is connected to the condenser and can exchange heat with the air blown into the motor, reducing the heat of the air and improving the heat dissipation effect. At the same time, it can reduce the amount of water vapor condensed outside the condenser tube entering the motor and maintain the motor's working environment.
[0013] 2. The soundproof box can block the noise generated by the motor when it is working, while the buffer pad and buffer block can buffer the vibration generated by the motor when it is working, reducing the vibration transmitted to the storage tank or soundproof box, and reducing the noise generated by the vibration. In conjunction with the filter plate and the sound-absorbing block inside it, the noise transmitted from the cooling fan can be absorbed, thereby reducing the noise of the device and improving the operating environment. Attached Figure Description
[0014] Figure 1 A perspective view of a graphite oil-free air compressor proposed in this utility model; Figure 2 This is a schematic diagram of the motor of a graphite oil-free air compressor proposed in this utility model; Figure 3 This is a schematic diagram of the internal soundproof box of a graphite oil-free air compressor proposed in this utility model; Figure 4This is a schematic diagram of a heat dissipation component for a graphite oil-free air compressor proposed in this utility model. Figure 5 This is a schematic diagram of the air intake assembly of a graphite oil-free air compressor proposed in this utility model.
[0015] In the picture: 1. Storage tank; 101. Control box; 102. Fixed bracket; 103. Buffer block; 2. Motor; 201. Heat sink; 202. Cooling fan; 203. Heat conduction plate; 204. Filter plate; 205. Sound-absorbing block; 3. Soundproof box; 301. Mounting hole; 302. Buffer pad; 303. Circulating fan; 304. Condenser; 305. Condenser pipe; 4. Inlet pipe; 401. Mounting ring; 402. Velcro; 403. Filter layer; 404. Filter cover. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example
[0017] Reference Figure 1-2 A graphite oil-free air compressor includes a storage tank 1, a control box 101 fixedly connected to the top of the storage tank 1, a fixed bracket 102 fixedly connected to the top of the storage tank 1, a buffer block 103 fixedly connected to the top of the fixed bracket 102, and a motor 2 fixedly connected to the top of the buffer block 103. It also includes a heat dissipation assembly and auxiliary components: the heat dissipation assembly includes a soundproof box 3 fixedly connected to the top of the storage tank 1, a condenser 304 fixedly connected to the outside of the soundproof box 3, and a condenser pipe 305 fixedly connected to the output end of the condenser 304, the condenser pipe 305 being disposed outside the motor 2; the auxiliary components include a cooling fan 202 and a heat-conducting plate 203 fixedly connected inside the motor 2, and a circulating fan 303 fixedly connected inside the soundproof box 3.
[0018] The heat generated by motor 2 during operation is initially dissipated by the internal cooling fan 202 accelerating the internal airflow. Simultaneously, one side of the heat-conducting plate 203 penetrates the outer casing of motor 2 and adheres to the outside of the condenser pipe 305. The air blown out by the cooling fan 202 first passes through the heat-conducting plate 203, and then the heat in the air is rapidly conducted to the surface of the condenser pipe 305 through the heat-conducting plate 203, lowering the air temperature and facilitating cooling of motor 2. The condenser pipe 305 and the condenser 304 form an active cooling cycle loop, continuously carrying away the heat from motor 2, thus achieving active cooling of motor 2. The circulating fan 303, fixedly connected inside the soundproof box 3, can force airflow within the soundproof box 3, providing cooling to the condenser 304. Sufficient airflow enhances its condensation effect and also assists in the uniform heat dissipation of other components inside the soundproof box 3, preventing local overheating. The soundproof box 3 itself not only serves to house and protect the internal components, but its sealed structure can also effectively isolate and reduce the huge noise generated when the compressor is working, improving the working environment. The fixed bracket 102 and buffer block 103 on the top of the storage tank 1 together form a shock absorption effect, which can absorb and isolate the violent vibration generated by the motor 2 and the compressor unit during operation, preventing the vibration from being transmitted to the storage tank 1 and the control box 101. This allows the graphite oil-free air compressor to maintain a stable operating state of low temperature, low noise, and low vibration even when working continuously at high intensity, ultimately extending the service life of the equipment and ensuring the purity of the output air.
[0019] Reference Figure 2 , Figure 3 and Figure 4 Furthermore, a graphite oil-free air compressor is further characterized by having filter plates 204 fixedly connected to both ends of the motor 2. The filter plates 204 have a cavity inside, and a sound-absorbing block 205 is fixedly connected inside the cavity. The filter plates 204 are located on one side of the cooling fan 202. Several heat sinks 201 are fixedly connected to the outside of the motor 2, and the outside of the condenser pipe 305 is attached to the outside of the heat sinks 201.
[0020] The filter plates 204, fixedly connected to both ends of the motor 2, not only effectively block external dust and impurities from entering the interior of the motor 2, thus protecting the cooling fan 202 and maintaining its efficient operation, but also have sound-absorbing blocks 205 fixed in their internal cavity structure that actively absorb electromagnetic noise and airflow noise generated during the operation of the motor 2, reducing the overall operating sound level of the equipment. Several heat sinks 201 fixedly connected to the outside of the motor 2 greatly increase its surface area and enhance its heat exchange capacity with the outside air. The condenser tubes 305 are tightly attached to the outside of these heat sinks 201, allowing the cooling energy provided by the condenser 304 to be efficiently conducted to the motor 2 housing through the huge contact area. Combined with the forced airflow generated by the cooling fan 202 inside the motor 2, a highly efficient three-dimensional heat dissipation system is formed, ensuring that the motor 2 can maintain a stable low temperature even under long-term high-load operation, reducing the possibility of efficiency reduction or insulation damage caused by overheating. At the same time, the sound-absorbing blocks 205 and filter plates 204 achieve the dual benefits of noise reduction and dust prevention, ultimately improving the durability and reliability of the equipment while improving the working environment.
[0021] The soundproof box 3 has mounting holes 301 on both sides inside. A buffer pad 302 is fixedly connected inside the mounting hole 301, and the inside of the buffer pad 302 is attached to the outside of the motor 2. Several circulating fans 303 are provided, and the several circulating fans 303 are arranged alternately on both sides of the motor 2.
[0022] The mounting holes 301 on both sides of the soundproof box 3 and the buffer pads 302 fixedly connected inside achieve flexible support and vibration isolation for the motor 2. The buffer pads 302 can not only effectively absorb the multidimensional vibrations generated by the motor 2 during operation and prevent the vibrations from being transmitted to the shell of the soundproof box 3, thereby reducing the overall noise, but also avoid structural fatigue damage that may be caused by rigid connections. Several circulating fans 303 arranged alternately on both sides of the motor 2 can create a highly efficient circulating airflow field covering the entire motor 2, so that cold air is forced to blow over the heat sink 201 on the outside of the motor 2 and the surface of the condenser pipe 305 attached to it, which enhances the forced convection heat transfer efficiency, reduces local overheating of the motor 2 inside the soundproof box 3, and improves the cooling effect.
[0023] Reference Figure 1 and Figure 4 Furthermore, in a graphite oil-free air compressor, an air inlet pipe 4 is fixedly connected to the top of the motor 2, and several filter layers 403 are provided inside the air inlet pipe 4. A filter cover 404 is fixedly connected to the air inlet end of the air inlet pipe 4. An installation ring 401 is fixedly connected inside the air inlet pipe 4, and a Velcro 402 is fixedly connected to the upper surface of the installation ring 401. The bottom of the filter layer 403 is attached to the upper surface of the Velcro 402.
[0024] The filter cover 404, which is fixedly connected to the intake end of the intake pipe 4, first performs coarse filtration on the intake air, blocking larger dust and fiber particles from entering. Then, the air flows through several filter layers 403 set inside the intake pipe 4 for multi-stage fine filtration. These filter layers 403 can effectively capture fine dust, sparks, or other impurities, ensuring that only clean air enters the motor 2. This completely prevents foreign objects from adhering to the inside of the motor 2 or the cooling fan 202, affecting the heat dissipation efficiency or even causing malfunctions. The mounting ring 401, which is fixedly connected inside the intake pipe 4, provides stable support for the Velcro 402 on the upper surface. The bottom of the filter layer 403 is attached to the upper surface of the Velcro 402, achieving a tool-free connection for quick installation or removal. This facilitates the regular cleaning or replacement of the filter layer 403 and effectively avoids poor air intake and motor 2 overload caused by filter blockage. It should be noted that the filter layer 403 includes, but is not limited to, activated carbon filter, glass fiber filter paper, and polyurethane sponge.
[0025] Specifically, in use, the present invention works as follows: the starting motor 2 drives the piston to move and draw air through the intake pipe 4. After being filtered by the filter cover 404 and multiple filter layers 403, the air enters the interior. During the operation of the motor 2, a high amount of heat is generated, which is transferred to the outside through the heat sink 201. Then, a cooler medium is injected into the condenser pipe 305 through the condenser 304. As the coolant flows, it carries away the heat dissipated from the motor 2 and the heat sink 201. During cooling, the circulating fan 303 is turned on to agitate the air inside the soundproof box 3, so that the air cools down quickly and improves the heat dissipation effect. In addition, the motor 2 is equipped with a cooling fan 202, which can perform air cooling for the motor 2. At the same time, the heat-conducting plate 203, being connected to the outside of the condenser pipe 305, can transfer a lower temperature to cool the air and improve the air-cooling effect. Moreover, the condenser pipe 305, being located outside the motor 2, can reduce the amount of water vapor condensed outside the condenser pipe 305 entering the motor 2. The motor 2 generates some noise during operation, which can be blocked by the soundproof box 3. The buffer pad 302 and the buffer block 103 can buffer the vibration generated by the motor 2 during operation, reducing the vibration transmitted to the storage tank 1 or the soundproof box 3 and reducing the noise generated by the vibration. In conjunction with the filter plate 204 and the sound-absorbing block 205 inside it, the noise transmitted from the cooling fan 202 can be absorbed, thereby reducing the noise of the device and improving the operating environment.
[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A graphite oil-free air compressor, comprising a storage tank (1), a control box (101) fixedly connected to the top of the storage tank (1), a fixed bracket (102) fixedly connected to the top of the storage tank (1), a buffer block (103) fixedly connected to the top of the fixed bracket (102), and a motor (2) fixedly connected to the top of the buffer block (103), characterized in that, Also includes: The heat dissipation assembly includes a soundproof box (3) fixedly connected to the top of the storage tank (1), a condenser (304) fixedly connected to the outside of the soundproof box (3), and a condenser pipe (305) fixedly connected to the output end of the condenser (304). The condenser pipe (305) is located outside the motor (2). The auxiliary components include a cooling fan (202) and a heat-conducting plate (203) fixedly connected inside the motor (2), and a circulating fan (303) fixedly connected inside the soundproof box (3).
2. The graphite oil-free air compressor according to claim 1, characterized in that, The motor (2) is fixedly connected to two ends of a filter plate (204). The filter plate (204) has a cavity inside, and a sound-absorbing block (205) is fixedly connected inside the cavity. The filter plate (204) is located on one side of the cooling fan (202).
3. The graphite oil-free air compressor according to claim 1, characterized in that, The motor (2) is fixedly connected to a number of heat sinks (201), and the condenser tube (305) is attached to the outside of the heat sinks (201).
4. The graphite oil-free air compressor according to claim 1, characterized in that, The soundproof box (3) has mounting holes (301) on both sides inside. A buffer pad (302) is fixedly connected inside the mounting hole (301), and the inside of the buffer pad (302) is attached to the outside of the motor (2).
5. A graphite-based oil-free air compressor according to claim 1, characterized in that, The circulating fan (303) is provided in a plurality of units, which are arranged alternately on both sides of the motor (2).
6. A graphite oil-free air compressor according to claim 1, characterized in that, The top of the motor (2) is fixedly connected to an air inlet pipe (4), and the inside of the air inlet pipe (4) is provided with several filter layers (403). The air inlet end of the air inlet pipe (4) is fixedly connected to a filter cover (404).
7. A graphite oil-free air compressor according to claim 6, characterized in that, An installation ring (401) is fixedly connected inside the air intake pipe (4), and a Velcro (402) is fixedly connected to the upper surface of the installation ring (401). The bottom of the filter layer (403) is attached to the upper surface of the Velcro (402).