Air compressor waste heat recycling device
By setting up an arc-shaped structure on the air compressor where the heat exchange box fits into the outer wall of the compressor, combined with internal heat exchange pipes, the problem of the single function of existing air compressor waste heat recovery devices is solved. This achieves efficient recovery of waste heat and integration of equipment cooling, improving energy utilization and reducing costs.
Patent Information
- Application Number
- CN202521926447.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-08
AI Technical Summary
Existing waste heat recovery devices for air compressors have limited functionality and neglect the high-temperature treatment of the air compressor itself. As a result, the equipment still needs to rely on air-cooling or water-cooling systems for cooling during operation. In addition, the equipment has a complex structure, high cost, and occupies additional installation space.
The heat exchange box adopts an arc-shaped surface structure that fits the outer wall of the compressor. Thermal grease is used to form a heat conduction contact surface. Combined with the internal heat exchange pipes, the heat output by the compressor is transferred to the medium in the heat exchange box, while the compressor is cooled in an auxiliary manner. The compressor and storage tank are connected through the heat exchange pipes to achieve secondary absorption of waste heat.
It improves the overall energy utilization rate, reduces manufacturing costs and maintenance difficulty, avoids the occupation of additional installation space, and realizes the integration of waste heat recovery and equipment cooling.
Smart Images

Figure CN224681337U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste heat recovery from air compressors, and in particular to a waste heat recovery and utilization device for air compressors. Background Technology
[0002] In industrial production, air compressors provide power to various equipment by compressing air. However, the intense friction between air molecules during compression can cause the gas temperature to rise significantly, resulting in the discharged compressed air containing a large amount of heat energy.
[0003] Existing compressed air waste heat recovery technologies mostly employ independent heat exchange devices, introducing compressed air into a dedicated heat exchanger via external pipelines for heat exchange. These devices are typically complex in structure, expensive to manufacture, and require additional installation space, resulting in significant initial investment and maintenance costs. More importantly, traditional technologies focus solely on recovering waste heat from compressed air, neglecting the high-temperature treatment of the air compressor itself. This means the equipment still relies on air-cooling or water-cooling systems for cooling during operation, resulting in limited functionality and overall energy efficiency improvements. Utility Model Content
[0004] The purpose of this utility model is to solve the shortcomings of the single function of existing air compressor waste heat recovery and utilization devices, and to propose an air compressor waste heat recovery and utilization device.
[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution: An air compressor waste heat recovery and utilization device includes a base plate, a compressor and a storage tank fixedly installed on the upper surface of the base plate, a heat exchange box installed on the upper surface of the base plate, an arc-shaped surface on one side of the heat exchange box that fits against the outer wall of the compressor, a heat exchange pipe inside the heat exchange box, the heat exchange pipe connecting the compressor and the storage tank respectively, the heat exchange pipe being configured to transfer the heat of the compressed air output by the compressor to the medium inside the heat exchange box, the arc-shaped surface forming a heat conduction contact surface with the outer wall of the compressor through thermally conductive silicone grease, for simultaneously achieving auxiliary cooling of the compressor.
[0006] Preferably, the heat exchange pipeline includes two first connecting pipes, two rows of conveying pipes and a second connecting pipe installed in the heat exchange box, one end of the first connecting pipe and one end of the second connecting pipe are respectively connected to both ends of the conveying pipe, the other end of the first connecting pipe is connected to the compressor exhaust port, and the other end of the second connecting pipe is connected to the storage tank inlet.
[0007] Preferably, a water outlet pipe is installed on the upper side of one side of the heat exchange box, and a water inlet pipe is installed on the lower side of one side of the heat exchange box.
[0008] Preferably, a fixing post is fixedly provided on the upper surface of the base plate, a bidirectional screw is rotatably provided inside the fixing post, and two L-shaped locking blocks are symmetrically provided inside the fixing post. The lower end of the locking block is threadedly connected to the bidirectional screw. Two concave-shaped fixing blocks are fixedly provided on the lower surface of the heat exchange box, and the upper end of the locking block is in contact with the inner wall of the fixing block.
[0009] Preferably, a support plate is fixedly provided in the middle of the upper surface of the fixed column, and the support plate is in contact with the bottom of the heat exchange box.
[0010] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the arc-shaped surface of the heat exchange box fitting with the outer wall of the compressor efficiently conducts the heat generated during equipment operation. Combined with the internal heat exchange components, this allows for secondary absorption of waste heat from the compressed air, significantly improving overall energy utilization. Compared to traditional independent heat exchange devices, this invention integrates waste heat recovery with equipment cooling, avoiding additional installation space requirements and complex piping connections, thus reducing manufacturing costs and maintenance complexity. Attached Figure Description
[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the heat exchanger box installation structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the heat exchanger box of this utility model.
[0012] The following are the components listed in the diagram: 1. Base plate; 11. Compressor; 12. Storage tank; 13. Heat exchange box; 14. Arc-shaped surface; 2. Heat exchange pipe; 21. First connecting pipe; 22. Delivery pipe; 23. Second connecting pipe; 3. Water outlet pipe; 31. Water inlet pipe; 4. Fixed column; 41. Bidirectional screw; 42. Clamping block; 43. Fixing block; 5. Support plate. Detailed Implementation
[0013] 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.
[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0015] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," "exemplary," and "one implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.
[0016] Example: This example provides a waste heat recovery and utilization device for an air compressor. See [link / reference] Figure 1-3 Specifically, it includes a base plate 1, a compressor 11 and a storage tank 12 fixedly installed on the upper surface of the base plate 1, a heat exchange box 13 installed on the upper surface of the base plate 1, an arc-shaped surface 14 that fits against the outer wall of the compressor 11 on one side of the heat exchange box 13, a heat exchange pipe 2 inside the heat exchange box 13, the heat exchange pipe 2 connecting the compressor 11 and the storage tank 12 respectively, the heat exchange pipe 2 being configured to transfer the heat of the compressed air output by the compressor 11 to the medium inside the heat exchange box 13, the arc-shaped surface 14 forming a heat conduction contact surface by fitting with the outer wall of the compressor 11 through thermally conductive silicone grease, used to simultaneously achieve auxiliary cooling of the compressor 11.
[0017] In this embodiment, the heat exchange box 13 serves as a heat exchange carrier, filled with a heat exchange medium (such as water). The arc-shaped surface 14 is in contact with the outer wall of the compressor 11, conducting the heat generated by the compressor 11 through direct metal-to-metal contact, thus cooling the equipment body. The heat exchange pipe 2 serves as the flow path for compressed air, with its two ends connected to the exhaust port of the compressor 11 and the inlet of the storage tank 12, respectively. As the compressed air flows through the pipe, heat is transferred to the medium inside the heat exchange box 13 through the pipe wall, completing waste heat recovery. With the synergy of dual heat sources, the heat exchange box 13 simultaneously absorbs heat from both the compressor 11 and the compressed air, improving energy recovery efficiency and avoiding the single-function limitation of "only recovering heat from compressed air" in traditional technologies.
[0018] In the specific implementation process, such as Figure 2 and Figure 3As shown, the heat exchange pipe 2 includes two first connecting pipes 21, two rows of conveying pipes 22 and a second connecting pipe 23 installed in the heat exchange box 13. One end of the first connecting pipe 21 and one end of the second connecting pipe 23 are respectively connected to the two ends of the conveying pipe 22. The other end of the first connecting pipe 21 is connected to the exhaust port of the compressor 11, and the other end of the second connecting pipe 23 is connected to the air inlet of the storage tank 12.
[0019] In this embodiment, compressed air enters the array of delivery pipes 22 through the first connecting pipe 21. During the flow process, it comes into full contact with the heat exchange medium, and the heat is transferred to the medium through the pipe wall. Then, it enters the storage tank 12 through the second connecting pipe 23, thereby realizing waste heat recovery and air precooling.
[0020] In the specific implementation process, such as Figure 1 and Figure 3 As shown, a water outlet pipe 3 is installed on the upper side of one side of the heat exchange box 13, and a water inlet pipe 31 is installed on the lower side of one side of the heat exchange box 13.
[0021] In this embodiment, the low-temperature medium enters from the outlet pipe 3, absorbs the dual heat from the compressor 11 body and the compressed air when it flows through the heat exchange box 13, and is discharged from the inlet pipe 31 after being heated. It can be connected to an external circulation system (such as heating or hot water supply) to realize waste heat utilization.
[0022] In the specific implementation process, such as Figure 1 and Figure 2 As shown, a fixing post 4 is fixedly provided on the upper surface of the base plate 1. A bidirectional screw 41 is rotatably provided inside the fixing post 4. Two L-shaped locking blocks 42 are symmetrically provided inside the fixing post 4. The lower end of the locking block 42 is threadedly connected to the bidirectional screw 41. Two concave-shaped fixing blocks 43 are fixedly provided on the lower surface of the heat exchange box 13. The upper end of the locking block 42 is in contact with the inner wall of the fixing block 43.
[0023] In this embodiment, the fixed column 4 serves as a support structure, with a hollow interior to accommodate the bidirectional screw 41 and the locking block 42. When the bidirectional screw 41 rotates, it drives the two locking blocks 42 to move in opposite directions. The forward and reverse thread design allows a single screw to control the synchronous alignment or separation of the two locking blocks 42. The upper end of the L-shaped locking block 42 engages with the concave fixing block 43 at the bottom of the heat exchange box 13, while the lower end is threadedly connected to the bidirectional screw 41. When the locking block 42 moves, its horizontal portion inserts into the inner wall of the fixing block 43, achieving mechanical locking.
[0024] In the specific implementation process, such as Figure 1 and Figure 2 As shown, a support plate 5 is fixedly installed in the middle of the upper surface of the fixed column 4, and the support plate 5 is attached to the bottom of the heat exchange box 13. The support plate 5 has a flat plate structure, with its top in contact with the bottom of the heat exchange box 13, bearing the weight of the heat exchange box 13 and distributing the pressure.
[0025] 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 inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A waste heat recovery and utilization device for an air compressor, comprising a base plate (1), a compressor (11) fixedly installed on the upper surface of the base plate (1), and a storage tank (12), characterized in that: A heat exchange box (13) is installed on the upper surface of the base plate (1). The heat exchange box (13) has an arc-shaped surface (14) on one side that fits against the outer wall of the compressor (11). A heat exchange pipe (2) is provided inside the heat exchange box (13). The heat exchange pipe (2) is connected to the compressor (11) and the storage tank (12) respectively. The heat exchange pipe (2) is configured to transfer the heat of the compressed air output by the compressor (11) to the medium inside the heat exchange box (13). The arc-shaped surface (14) is fitted with the outer wall of the compressor (11) through thermal grease to form a heat conduction contact surface, which is used to simultaneously achieve auxiliary cooling of the compressor (11).
2. The air compressor waste heat recovery and utilization device according to claim 1, characterized in that: The heat exchange pipe (2) includes two first connecting pipes (21), two rows of conveying pipes (22) installed in the heat exchange box (13), and a second connecting pipe (23). One end of the first connecting pipe (21) and one end of the second connecting pipe (23) are respectively connected to the two ends of the conveying pipe (22). The other end of the first connecting pipe (21) is connected to the exhaust port of the compressor (11), and the other end of the second connecting pipe (23) is connected to the air inlet of the storage tank (12).
3. The air compressor waste heat recovery and utilization device according to claim 1, characterized in that: A water outlet pipe (3) is installed on the upper side of one side of the heat exchange box (13), and a water inlet pipe (31) is installed on the lower side of one side of the heat exchange box (13).
4. The air compressor waste heat recovery and utilization device according to claim 1, characterized in that: The upper surface of the base plate (1) is fixedly provided with a fixing column (4), and a bidirectional screw (41) is rotatably provided inside the fixing column (4). Two L-shaped locking blocks (42) are symmetrically provided inside the fixing column (4). The lower end of the locking block (42) is threadedly connected to the bidirectional screw (41). The lower surface of the heat exchange box (13) is fixedly provided with two concave-shaped fixing blocks (43). The upper end of the locking block (42) is in contact with the inner wall of the fixing block (43).
5. The air compressor waste heat recovery and utilization device according to claim 4, characterized in that: A support plate (5) is fixedly provided on the middle of the upper surface of the fixed column (4), and the support plate (5) is attached to the bottom of the heat exchange box (13).