Oil-free air compressor with cooling system

By introducing a cooling and heat absorption system into the oil-free air compressor, and using cold air and coolant to stabilize the temperature, the problem of reduced efficiency and shortened equipment life caused by temperature rise during air compression is solved, achieving efficient and stable air compression.

CN223621757UActive Publication Date: 2025-12-02SHENZHEN KUNQI MECHANICAL ENGINEERING CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520165847.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-23
Publication Date
2025-12-02
Estimated Expiration
2035-01-23

AI Technical Summary

Technical Problem

In oil-free air compressors, the air expands and diffuses due to the temperature rise during the air compression process, which affects the compression efficiency and may shorten the equipment life.

Method used

An oil-free air compressor with a cooling system was designed, including a cooling mechanism and a heat absorption mechanism. The system uses an intake fan to deliver cold air and cools it through a cooling plate, combined with a cooling fan to accelerate heat dissipation. The heat absorption mechanism absorbs heat by circulating coolant through a water pump, ensuring stable equipment temperature.

Benefits of technology

It effectively avoids air expansion caused by temperature rise, improves the compression efficiency and service life of the air compressor, and enhances the durability of the cooling system.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223621757U_ABST
    Figure CN223621757U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of air compressors, in particular to an oilless air compressor with a cooling system, which comprises an oilless air compressor body, a cooling mechanism and a heat absorption mechanism. According to the utility model, the cooling mechanism is arranged on the fixed frame, the air inlet fan is started to supply air into the fixed shell, and the plurality of refrigeration sheets are started to refrigerate the air passing through the interior of the air duct, so that the air blown into the fixed shell is cold air; according to the oil-free air compressor, the second-stage compression main machine on the oil-free air compressor body is integrally cooled through the blown-in cold air, the temperature of air sucked into the second-stage compression main machine on the oil-free air compressor body is low, and therefore the situation that when the oil-free air compressor body works, due to temperature rising, air diffusion and expansion are caused, and the air compression efficiency is affected is avoided; and the service life of the oil-free air compressor body is prolonged, the heat dissipation efficiency of the multiple refrigeration pieces is improved by starting the multiple heat dissipation fans, and the service life of the cooling mechanism is prolonged.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, specifically an oil-free air compressor with a cooling system. Background Technology

[0002] The core of an oil-free air compressor is its superior two-stage compression unit. The rotor undergoes twenty precision machining processes, achieving unparalleled accuracy and durability in its linear profile. Internally, high-quality bearings and precision gears ensure rotor coaxiality, guaranteeing precise rotor fit and maintaining long-term, efficient, and reliable operation. During operation, air enters the compressor through the inlet pipe. The motor's rotation causes the piston to reciprocate, compressing the air. The compressed gas then exits through the outlet, passing through a high-pressure hose and a one-way valve into the air tank. Because air heats up during compression, this temperature increase causes expansion and can affect compression efficiency. Utility Model Content

[0003] The purpose of this invention is to provide an oil-free air compressor with a cooling system to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An oil-free air compressor with a cooling system includes:

[0006] The oil-free air compressor body has a fixed shell fixedly connected to its top, and a fixed frame fixedly connected to the top of the fixed shell. An air exchange hole is opened on one side of the fixed shell, and a filter screen is fixedly connected inside the air exchange hole.

[0007] The cooling mechanism is fixedly connected to the inner wall of the fixed frame;

[0008] The heat absorption mechanism is fixed inside the fixed shell.

[0009] Furthermore, multiple air outlet pipes are fixedly fitted onto one end of each side of the fixed housing. One end of each air outlet pipe is fixedly connected to the heat dissipation end of the secondary compressor host on the oil-free air compressor body, and a filter screen is fixedly connected inside the other end of the air outlet pipe.

[0010] Furthermore, the cooling mechanism includes:

[0011] A rectangular plate with an air duct and an air outlet on the inner bottom surface of one end of the air duct. The top of the rectangular plate has multiple rectangular holes evenly distributed, and a heat dissipation component is provided on the top of the rectangular plate.

[0012] The air intake shell is connected and fixed to the other end of one side of the rectangular plate. The air intake shell is connected to the other end of the air duct, and one end of the air intake shell is connected and fixed to the body of the oil-free air compressor.

[0013] An intake fan is disposed at one end inside the intake housing. A fixing plate is sleeved and fixed to the outer side wall of the intake fan, and the fixing plate is fixedly connected to the inner side wall of the intake housing.

[0014] Multiple copper plates are fixedly connected to the inner walls of multiple rectangular holes, and a cooling plate is provided on the top of the copper plates, with the heat-absorbing surface of the cooling plate fixedly connected to the top of the copper plates.

[0015] Preferably, the width of the cooling chip is smaller than the width of the copper plate, and a filter screen is fixedly connected to one end of the air inlet housing.

[0016] Preferably, the heat dissipation component includes:

[0017] A rectangular shell is fixedly connected to the top of the rectangular plate. The outer wall of the rectangular shell is fixedly connected to the inner wall of the fixed frame, and multiple ventilation holes are evenly provided on the top of the rectangular shell.

[0018] Multiple cooling fans, with their outer walls fixedly connected to the bottom of the inner side of multiple ventilation holes;

[0019] Multiple filters are fixedly connected to the top of the inner side of multiple air vents.

[0020] Preferably, the length of the rectangular shell is the same as the length of the rectangular plate, and the width of the rectangular shell is the same as the width of the rectangular plate.

[0021] Furthermore, the top of the oil-free air compressor body is provided with a liquid storage tank, and the outer sides of the fixed shell and the fixed frame are coated with heat-insulating coating.

[0022] The heat absorption mechanism includes:

[0023] The water pump is fixedly connected to one inner wall of the fixed housing;

[0024] One end of the delivery pipe is connected and fixed to the pumping end of the water pump;

[0025] The second delivery pipe is fixedly connected at one end to the air outlet of the water pump;

[0026] Two connecting shells are respectively connected and fixed to the other end of the first and second delivery pipes. The connecting shells pass through the side wall of the fixed shell and extend into the interior of the liquid storage tank.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] 1. By installing a cooling mechanism on the fixed frame and activating the intake fan to supply air into the fixed housing, and by activating multiple cooling fins to cool the air passing through the air duct, the air blown into the fixed housing is cold air. This cold air cools the entire secondary compressor unit on the oil-free air compressor body, resulting in a lower temperature of the air drawn into the secondary compressor unit. This prevents the air from expanding due to overheating during operation, which would affect the air compression efficiency and increase the service life of the oil-free air compressor body. Furthermore, by activating multiple cooling fans, the heat dissipation efficiency of the multiple cooling fins is accelerated, improving the service life of the cooling mechanism. The heat absorption mechanism can further absorb heat from inside the fixed housing, ensuring the cooling effect on the oil-free air compressor body, thereby improving the practicality of this oil-free air compressor with a cooling system. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 This is a schematic diagram showing the positional relationship between the fixed shell and the air outlet pipe in this utility model;

[0031] Figure 3 This is a schematic diagram showing the positional relationship between the fixed shell and the second filter screen in this utility model;

[0032] Figure 4 This is a schematic diagram of the cooling mechanism in this utility model;

[0033] Figure 5 This is a schematic diagram of the rectangular plate structure in this utility model.

[0034] In the diagram: 100, Oil-free air compressor body; 110, Fixed shell; 111, Liquid storage tank; 120, Fixed frame; 130, Air outlet pipe; 131, Filter screen one; 140, Filter screen two; 200, Cooling mechanism; 210, Rectangular plate; 211, Air duct; 212, Air outlet; 213, Rectangular hole; 220, Air inlet shell; 221, Filter screen three; 230, Air inlet fan; 231, Fixed plate; 240, Copper plate; 241, Cooling element; 250, Rectangular shell; 251, Ventilation hole; 260, Cooling fan; 270, Filter screen four; 300, Heat absorption mechanism; 310, Water pump; 320, Delivery pipe one; 330, Delivery pipe two; 340, Connecting shell. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figure 1-5 In this embodiment of the present invention, an oil-free air compressor with a cooling system includes: an oil-free air compressor body 100, a cooling mechanism 200, and a heat absorption mechanism 300. A fixed shell 110 is fixedly connected to the top of the oil-free air compressor body 100, and a fixed frame 120 is fixedly connected to the top of the fixed shell 110. An air exchange hole 251 is provided on one side of the fixed shell 110, and a filter screen 140 is fixedly connected inside the air exchange hole 251. The cooling mechanism 200 is fixedly connected to the inner side wall of the fixed frame 120, and the heat absorption mechanism 300 is fixed inside the fixed shell 110.

[0037] Specifically, the cooling mechanism 200 facilitates the cooling of the air inside the fixed housing 110, thereby cooling the air drawn into the oil-free air compressor body 100. It also provides overall cooling for the secondary compressor unit on the oil-free air compressor body 100, preventing air diffusion and expansion due to temperature rise during operation, which would affect air compression efficiency and increase the service life of the oil-free air compressor body 100. Furthermore, the heat absorption mechanism 300 can absorb heat from inside the fixed housing 110 again, ensuring the cooling effect of the oil-free air compressor body 100.

[0038] Example 1

[0039] like Figure 4-5As shown, in this embodiment, the cooling mechanism 200 includes: a rectangular plate 210, an air inlet housing 220, an air intake fan 230, and multiple copper plates 240. An air duct 211 is provided on the rectangular plate 210, and an air outlet 212 is provided on the inner bottom surface of one end of the air duct 211. Multiple rectangular holes 213 are evenly distributed on the top of the rectangular plate 210. A heat dissipation assembly is provided on the top of the rectangular plate 210. The air inlet housing 220 is connected and fixed to the other end of one side of the rectangular plate 210, and is also connected to the other end of the air duct 211. One end of the air inlet housing 220 is connected and fixed to the oil-free air compressor body 100. The air intake fan 230 is disposed inside one end of the air inlet housing 220. A fixing plate 231 is sleeved and fixed to the outer wall of the air intake fan 230, and the fixing plate 231 is fixedly connected to the inner wall of the air inlet housing 220. The multiple copper plates 240 are respectively fixedly connected to the inner walls of the multiple rectangular holes 213. A cooling plate 241 is provided on the top of the copper plate 240, and the heat-absorbing surface of the cooling plate 241 is fixedly connected to the top of the copper plate 240. The width of the cooling plate 241 is smaller than the width of the copper plate 240. A filter screen 221 is fixedly connected to one end inside the air inlet shell 220. The heat dissipation assembly includes: a rectangular shell 250, multiple cooling fans 260 and multiple filters 270. The rectangular shell 250 is fixedly connected to the top of the rectangular plate 210. The outer wall of the rectangular shell 250 is fixedly connected to the inner wall of the fixing frame 120. Multiple ventilation holes 251 are evenly opened on the top of the rectangular shell 250. The outer walls of the multiple cooling fans 260 are fixedly connected to the bottom of the inner side of the multiple ventilation holes 251 respectively. The multiple filters 270 are fixedly connected to the top of the inner side of the multiple ventilation holes 251 respectively. The length of the rectangular shell 250 is the same as the length of the rectangular plate 210, and the width of the rectangular shell 250 is the same as the width of the rectangular plate 210.

[0040] In this embodiment, by activating the intake fan 230, air is supplied to the interior of the intake housing 220 and the air duct 211, thereby supplying air into the fixed housing 110. Simultaneously, by activating multiple cooling plates 241, heat is absorbed by the multiple copper plates 240, cooling the air passing through the air duct 211. This cool air is then blown into the fixed housing 110, thus cooling the entire secondary compressor unit on the oil-free air compressor body 100. Furthermore, this keeps the temperature of the air drawn into the secondary compressor unit on the oil-free air compressor body 100 lower, thus preventing the air from spreading and expanding due to temperature rise during operation, which would affect the air compression efficiency and increase the service life of the oil-free air compressor body 100. When the cooling chip 241 is working, multiple cooling fans 260 are activated to accelerate the heat dissipation efficiency of the multiple cooling chips 241, ensuring that the multiple cooling chips 241 can operate normally and improving the service life of the cooling mechanism 200.

[0041] like Figure 2As shown, in this embodiment, multiple air outlet pipes 130 are sleeved and fixed at one end of both sides of the fixed shell 110. One end of the air outlet pipe 130 is fixedly connected to the heat dissipation end of the secondary compressor host on the oil-free air compressor body 100, and a filter screen 131 is fixedly connected inside the other end of the air outlet pipe 130.

[0042] In practice, the exhaust pipe 130 facilitates the discharge of the heat dissipation end of the secondary compressor unit to the outside of the fixed housing 110, thus ensuring the heat dissipation effect of the secondary compressor unit on the oil-free air compressor body 100.

[0043] Example 2

[0044] Based on Embodiment 1, in order to improve the cooling effect inside the fixed housing 110, the cooling effect on the oil-free air compressor body 100 is improved.

[0045] like Figure 2-3 As shown, in this embodiment, the top of the oil-free air compressor body 100 is provided with a liquid storage tank 111, and the outer sides of the fixed shell 110 and the fixed frame 120 are coated with heat-insulating paint. The heat absorption mechanism 300 includes: a water pump 310, a first conveying pipe 320, a second conveying pipe 330 and two connecting shells 340. The water pump 310 is fixedly connected to an inner side wall of the fixed shell 110. One end of the first conveying pipe 320 is connected and fixedly connected to the water pump 310's pumping end, and one end of the second conveying pipe 330 is connected and fixedly connected to the water pump 310's outlet end. The two connecting shells 340 are respectively connected and fixedly connected to the other ends of the first conveying pipe 320 and the second conveying pipe 330. The connecting shells 340 pass through the side wall of the fixed shell 110 and extend into the interior of the liquid storage tank 111.

[0046] In practice, the coolant is stored in the storage tank 111, which absorbs heat from the inner wall of the storage tank 111, thereby absorbing heat from the inside of the fixed shell 110 and improving the cooling effect inside the fixed shell 110. This, in turn, improves the cooling effect on the oil-free air compressor body 100. Furthermore, the insulation coating on the fixed shell 110 and the fixed frame 120 prevents external instability from affecting the use of the coolant. Then, by starting the water pump 310, the coolant begins to circulate through the water pump 310, the first delivery pipe 320, the second delivery pipe 330, and the two connecting shells 340, thus ensuring the heat absorption effect of the coolant.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oil-free air compressor with a cooling system, characterized in that, include: An oil-free air compressor body (100) is provided, with a fixed shell (110) fixedly connected to the top of the oil-free air compressor body (100), and a fixed frame (120) fixedly connected to the top of the fixed shell (110). An air exchange hole (251) is provided on one side of the fixed shell (110), and a filter screen (140) is fixedly connected inside the air exchange hole (251). The cooling mechanism (200) is fixedly connected to the inner wall of the fixed frame (120); The heat absorption mechanism (300) is fixed inside the fixed shell (110).

2. The oil-free air compressor with a cooling system according to claim 1, characterized in that, Multiple air outlet pipes (130) are fixedly fitted to one end of each side of the fixed housing (110). One end of the air outlet pipe (130) is fixedly connected to the heat dissipation end of the secondary compressor host on the oil-free air compressor body (100), and a filter screen (131) is fixedly connected inside the other end of the air outlet pipe (130).

3. The oil-free air compressor with a cooling system according to claim 1, characterized in that, The cooling mechanism (200) includes: A rectangular plate (210) is provided with an air duct (211) and an air outlet (212) is provided on the inner bottom surface of one end of the air duct (211). A plurality of rectangular holes (213) are evenly provided on the top of the rectangular plate (210). A heat dissipation component is provided on the top of the rectangular plate (210). The air intake shell (220) is connected and fixed to the other end of one side of the rectangular plate (210), the air intake shell (220) is connected to the other end of the air duct (211), and one end of the air intake shell (220) is connected and fixed to the oil-free air compressor body (100); An intake fan (230) is disposed at one end inside the intake housing (220). A fixing plate (231) is sleeved and fixed on the outer side wall of the intake fan (230), and the fixing plate (231) is fixedly connected to the inner side wall of the intake housing (220). Multiple copper plates (240) are fixedly connected to the inner sidewalls of multiple rectangular holes (213), and a cooling plate (241) is provided on the top of the copper plate (240), and the heat-absorbing surface of the cooling plate (241) is fixedly connected to the top of the copper plate (240).

4. The oil-free air compressor with a cooling system according to claim 3, characterized in that, The width of the cooling chip (241) is smaller than the width of the copper plate (240), and a filter screen (221) is fixedly connected to one end of the air inlet shell (220).

5. The oil-free air compressor with a cooling system according to claim 3, characterized in that, The heat dissipation component includes: A rectangular shell (250) is fixedly connected to the top of the rectangular plate (210). The outer wall of the rectangular shell (250) is fixedly connected to the inner wall of the fixed frame (120). A plurality of ventilation holes (251) are evenly opened on the top of the rectangular shell (250). Multiple cooling fans (260) have their outer side walls fixedly connected to the bottom of the inner side of multiple ventilation holes (251); Multiple filter screens (270) are fixedly connected to the top of the inner side of multiple air exchange holes (251).

6. The oil-free air compressor with a cooling system according to claim 5, characterized in that, The length of the rectangular shell (250) is the same as the length of the rectangular plate (210), and the width of the rectangular shell (250) is the same as the width of the rectangular plate (210).

7. The oil-free air compressor with a cooling system according to claim 1, characterized in that, The top of the oil-free air compressor body (100) is provided with a liquid storage tank (111), and the outer sides of the fixed shell (110) and the fixed frame (120) are coated with heat-insulating coating. The heat absorption mechanism (300) includes: A water pump (310) is fixedly connected to an inner wall of the fixed housing (110); One end of the delivery pipe (320) is connected and fixed to the pumping end of the water pump (310); The second delivery pipe (330) is fixedly connected at one end to the air outlet of the water pump (310); Two connecting shells (340) are respectively connected and fixed to the other end of the first conveying pipe (320) and the second conveying pipe (330). The connecting shells (340) pass through the side wall of the fixed shell (110) and extend into the interior of the liquid storage tank (111).