Three-stage compression air compressor utilizing shell to dissipate heat
By combining air and water cooling channels within the motor housing, and utilizing the water cooling channel to cool the gas within the air channel, the problem of poor intercooling effect in multi-stage air compressors is solved, achieving more efficient heat dissipation and structural optimization, and reducing costs.
Patent Information
- Application Number
- CN202520327022.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing multi-stage air compressors have poor interstage gas cooling performance, which leads to increased power consumption in the second stage compression and an increase in the overall system temperature. Furthermore, high-temperature gases place high demands on the air compressor materials, increasing costs.
An air channel and a water cooling channel are set inside the motor housing. The air channel surrounds the outside of the water cooling channel and is spaced apart from it. The water cooling channel is used to cool the gas in the air channel. Combined with heat sinks, the heat dissipation effect is improved, avoiding the arrangement of inter-pole pipes and optimizing the cooling structure.
It improves interstage cooling, simplifies the air compressor structure, reduces power consumption and temperature, lowers material requirements, and reduces costs.
Smart Images
Figure CN223739660U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air compressor heat dissipation technology, and more specifically, it relates to a three-stage compression air compressor that utilizes the casing for heat dissipation. Background Technology
[0002] In existing multi-stage air compressors, the gas between stages is connected via interstage pipes. The poor intercooling effect between two compression stages increases the power consumption of the second compression stage and the overall system temperature; that is, there is a problem with poor intercooling, increasing the power consumption of the second compression stage and the overall system temperature. Furthermore, when the gas enters the next stage after one compression, the excessively high gas temperature places higher demands on the internal materials of the air compressor, resulting in high compressor costs. Utility Model Content
[0003] The purpose of this invention is to provide a three-stage compressed air compressor that utilizes the casing for heat dissipation, aiming to optimize the interstage cooling structure and improve the heat dissipation effect.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a three-stage air compressor that utilizes a housing for heat dissipation is provided, comprising a motor housing, a first-stage air compressor volute, and a second-stage air compressor volute. The motor housing has a water-cooling channel and an air channel. The air channel connects the air outlet end of the first-stage air compressor volute and the air inlet end of the second-stage air compressor volute. The air channel is circumferentially arranged around the outside of the water-cooling channel and spaced apart from the water-cooling channel.
[0005] In another embodiment of this application, the outer periphery of the water-cooling channel has a plurality of spaced heat sinks, and the plurality of heat sinks extend into the air channel.
[0006] In another embodiment of this application, the width direction of the heat sink is consistent with the radial direction of the motor housing, and the plurality of heat sinks are evenly distributed in the circumference of the water cooling channel.
[0007] In another embodiment of this application, the heat sink extends radially along the motor housing to the outer sidewall of the air channel, and the heat sink divides the air channel into multiple parallel air distribution channels.
[0008] In another embodiment of this application, the length direction of the heat sink is consistent with the length direction of the motor housing, the length of the heat sink is less than the length of the air channel, and a symmetrical annular buffer zone is formed in the inlet and outlet directions of the air channel.
[0009] In another embodiment of this application, the distance between the air channel and the water cooling channel is the same as the distance between the water cooling channel and the inner cavity of the motor housing.
[0010] In another embodiment of this application, the water cooling channel includes a plurality of annular channels with openings. The plurality of annular channels are spaced apart along the axial direction of the motor housing. Adjacent annular channels are connected by a connecting channel. The connecting channel includes a first end channel and a second end channel. The first end channel connects to the first end of two adjacent annular channels, and the second end channel connects to the second end of two adjacent annular channels. The first end channel and the second end channel are alternately arranged.
[0011] As another embodiment of this application, the motor housing also has an internal vent. The internal vent is located between the first end and the second end of the water-cooling channel and is spaced apart from the water-cooling channel. The internal vent includes an air intake hole and an air outlet hole, which are spaced apart. One end of the air intake hole communicates with the air channel, and the other end of the air intake hole extends into the inner cavity of the motor housing. The air outlet hole connects the inner cavity of the motor housing with the air-cooling outlet of the motor housing.
[0012] In another embodiment of this application, the primary air compressor volute has a primary air outlet channel, and the secondary air compressor volute has a secondary air inlet channel. The primary air outlet channel and the secondary air inlet channel are respectively connected to the two ends of the air channel.
[0013] In another embodiment of this application, a pressure end sealing seat is installed in the inner cavity of the first-stage air compressor volute, and an annular first-stage air outlet channel is formed between the inner side wall of the first-stage air compressor volute and the pressure end sealing seat; a radial bearing seat is installed in the inner cavity of the second-stage air compressor volute, and an annular second-stage air inlet channel is formed between the second-stage air compressor volute and the radial bearing seat.
[0014] The beneficial effects of this utility model of a three-stage air compressor utilizing shell heat dissipation are as follows: Compared with the prior art, this utility model adds an air channel inside the motor housing to achieve inter-stage transmission by connecting the inner cavities of the first-stage and second-stage air compressor volutes. The air channel is located circumferentially outside the water-cooling channel and is spaced apart from it, allowing the water-cooling channel to cool the air passing through it, thus achieving inter-stage cooling. The combined arrangement of the air channel and water-cooling channel avoids the need for inter-stage pipes and inter-stage intercoolers, optimizing the inter-stage cooling structure and simplifying the overall structure of the air compressor. It also improves heat dissipation. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 A schematic diagram of a three-stage compressed air compressor utilizing heat dissipation from the casing, provided as an embodiment of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the motor housing provided in an embodiment of the present utility model;
[0018] Figure 3 This is a cross-sectional view of the motor housing provided in an embodiment of the present utility model.
[0019] In the diagram: 1. First-stage air compressor volute; 2. Motor housing; 3. Second-stage air compressor volute; 4. Pressure end seal seat; 5. First-stage air outlet passage; 6. Second-stage air inlet passage; 7. Radial bearing seat; 8. Annular buffer zone; 9. Air distribution channel; 10. Water cooling channel; 11. Heat sink; 12. Air vent; 13. Air outlet. Detailed Implementation
[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] Please see Figures 1 to 3 The present invention provides a three-stage air compressor that utilizes a housing for heat dissipation. The three-stage air compressor utilizing a housing for heat dissipation includes a motor housing 2, a first-stage air compressor volute 1, and a second-stage air compressor volute 3. The motor housing 2 has a water-cooling channel 10 and an air channel. The air channel connects the outlet end of the first-stage air compressor volute 1 and the inlet end of the second-stage air compressor volute 3. The air channel is circumferentially arranged around the outside of the water-cooling channel 10 and spaced apart from it.
[0022] The three-stage air compressor utilizing shell heat dissipation provided by this utility model, compared with the prior art, adds an air channel inside the motor housing 2. This air channel is used to connect the inner cavity of the first-stage air compressor volute 1 and the inner cavity of the second-stage air compressor volute 3, achieving the purpose of inter-stage transmission. The air channel is located circumferentially outside the water-cooling channel 10 and is spaced apart from the water-cooling channel 10. The water-cooling channel 10 can be used to cool the air passing through the air channel, achieving the purpose of inter-stage cooling. The arrangement of the air channel and the water-cooling channel 10 avoids the arrangement of inter-stage pipes and inter-stage intercoolers, achieving the purpose of optimizing the inter-stage cooling structure and simplifying the overall structure of the air compressor; at the same time, it improves the heat dissipation effect.
[0023] In some possible embodiments, please refer to Figure 2 and Figure 3 The water-cooling channel 10 has multiple spaced heat sinks 11 on its outer periphery, and all of the multiple heat sinks 11 extend into the air channel.
[0024] The water-cooling channel 10 is arranged in a ring shape inside the motor housing 2. The water-cooling channel 10 has a ring-shaped air channel along its radial outer circumference, and the air channel extends axially to the two end faces of the motor housing 2. The water-cooling channel 10 and the air channel are spaced apart, and heat exchange can be achieved through the motor housing 2 to achieve the effect of cooling the gas in the air channel.
[0025] The motor housing 2 between the water-cooling channel 10 and the air channel is an annular partition layer. This partition layer not only isolates the coolant in the water-cooling channel 10 and the gas in the air channel, but also serves for heat exchange between the two.
[0026] The heat sink 11 located on the outer periphery of the water cooling channel 10 is fixed on the partition layer. The heat sink 11 on the partition layer extends radially toward the air channel along the motor housing 2 to increase the heat exchange area of the gas in the air channel.
[0027] Optionally, both the air channel and the water cooling channel 10 are annular channel structures with openings, and the heat sink 11 on the partition layer not only improves the heat dissipation effect but also enhances the strength of the motor housing 2.
[0028] Optionally, the width direction of the heat sink 11 is consistent with the radial direction of the motor housing 2, and multiple heat sinks 11 are evenly distributed in the circumference of the water cooling channel 10.
[0029] In some possible embodiments, please refer to Figure 2 and Figure 3The heat sink 11 extends radially along the motor housing 2 to the outer sidewall of the air passage, dividing the air passage into multiple parallel air ducts 9. Along its width, one end of the heat sink 11 is connected to the partition layer, and the other end extends to the outer sidewall of the air passage and connects to the motor housing 2. The annular air passage is divided into multiple air ducts 9, improving the supporting strength of the motor housing 2 without affecting ventilation.
[0030] Optionally, the air passage is annular, and the annulus has multiple spaced heat sinks 11.
[0031] The length direction of the heat sink 11 is consistent with the length direction of the motor housing 2. The length of the heat sink 11 is less than the length of the air channel, forming a symmetrical annular buffer zone 8 in the inlet and outlet directions of the air channel.
[0032] In the axial direction of the motor housing 2, the length of the air passage is greater than the length of the water cooling passage 10. Both the front and rear ends of the air passage have annular buffer zones 8. After entering the annular buffer zone 8 at the front end, the air is dispersed into multiple air distribution channels 9, and after passing through the multiple air distribution channels 9, it enters the annular buffer zone 8 at the rear end.
[0033] The annular buffer zone 8 improves the uniformity of air distribution across the multiple air distribution channels 9.
[0034] like Figure 1 As shown, the distance between the air channel and the water cooling channel 10 is the same as the distance between the water cooling channel 10 and the inner cavity of the motor housing 2. That is, the thickness of the partition layer is the same as the shell thickness between the water cooling channel 10 and the inner cavity of the motor housing 2, ensuring the strength and heat exchange effect of the motor housing 2.
[0035] In some possible embodiments, please refer to Figure 1 The water-cooling channel 10 includes multiple annular channels with openings. The multiple annular channels are spaced apart along the axial direction of the motor housing 2. Adjacent annular channels are connected by a connecting channel. The connecting channel includes a first end channel and a second end channel. The first end channel connects the first end of two adjacent annular channels, and the second end channel connects the second end of two adjacent annular channels. The first end channel and the second end channel are alternately arranged.
[0036] The water-cooling channel 10 includes multiple annular channels spaced apart along the axial direction of the motor housing 2, which are used to cool the motor housing 2. Both ends of any two adjacent annular channels have a connecting channel.
[0037] When the first end of one of the annular channels is connected to the first end of its upstream annular channel through the first end channel, its second end is connected to the second end of its downstream annular channel through the second end channel; the coolant in the annular channel flows from the first end to the second end, and the coolant in its adjacent upstream or downstream annular channel flows from the second end to the first end, so as to increase the coverage area of the water-cooled channel 10.
[0038] The motor housing 2 also has an inlet pipe and an outlet pipe, which are connected to the inlet and outlet ends of the water-cooling channel 10, respectively. Correspondingly, the air channel located inside the motor housing 2 has a clearance area, which does not have an air channel. Both the inlet pipe and the outlet pipe are located within the clearance area. The clearance area avoids the inlet pipe and the outlet pipe, and there is no air channel within the clearance area to prevent cross-contamination between air and coolant.
[0039] Optionally, at the location where the air passage passes through the inlet and outlet pipes, the corresponding air distribution channel 9 is connected to the adjacent air distribution channel 9 to avoid the inlet and outlet pipes. The inlet and outlet pipes can be set at the same end of the motor housing 2 as needed; or they can be set at intervals, with the inlet and outlet pipes respectively located at both ends of the motor housing 2.
[0040] In some possible embodiments, please refer to Figure 1 The motor housing 2 also has an internal vent. The internal vent is located between the first and second ends of the water cooling channel 10 and is spaced apart from the water cooling channel 10. The internal vent includes an air intake hole 12 and an air outlet hole 13, which are spaced apart. One end of the air intake hole 12 is connected to the air channel, and the other end of the air intake hole 12 extends into the inner cavity of the motor housing 2. The air outlet hole 13 connects the inner cavity of the motor housing 2 with the air cooling outlet of the motor housing 2.
[0041] On the level where the water cooling channel 10 is provided in the motor housing 2, there is a closed area between the first end and the second end of the water cooling channel 10. This closed area not only supports the housing, but also makes way for the internal ventilation holes.
[0042] An air intake hole 12 and an air outlet hole 13 are provided within the enclosed area. The air intake end of the air intake hole 12 is connected to the air passage via a radially extending hole, and the outlet end of the hole is connected to the inner cavity of the motor housing 2. One end of the air outlet hole 13 is connected to the inner cavity of the motor housing 2, and the other end extends to the air-cooling outlet of the motor housing 2. The air-cooling outlet is an exhaust pipe located on the battery housing.
[0043] In some possible embodiments, please refer to Figure 1The primary air compressor volute 1 has a primary air outlet passage 5, and the secondary air compressor volute 3 has a secondary air inlet passage 6. The primary air outlet passage 5 and the secondary air inlet passage 6 are respectively connected to the two ends of the air passage. The two ends of the air passage are connected to the primary air compressor volute 1 and the secondary air compressor volute 3 through the primary air outlet passage 5 and the secondary air inlet passage 6, respectively.
[0044] Specifically, a pressure end seal seat 4 is installed in the inner cavity of the first-stage air compressor volute 1, and an annular first-stage air outlet channel 5 is formed between the inner side wall of the first-stage air compressor volute 1 and the pressure end seal seat 4; a radial bearing seat 7 is installed in the inner cavity of the second-stage air compressor volute 3, and an annular second-stage air inlet channel 6 is formed between the second-stage air compressor volute 3 and the radial bearing seat 7.
[0045] The annular primary exhaust channel 5 is connected to the annular buffer zone 8 at the front end of the air channel; the annular buffer zone 8 at the rear end of the air channel is connected to the annular secondary intake channel 6. The trajectories of both the primary exhaust channel 5 and the secondary intake channel 6 are arc-shaped, and the flow trajectory of the gas passing through them is also arc-shaped.
[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A three-stage compression air compressor utilizing a housing for heat dissipation, characterized in that, The motor shell (2) has a water cooling channel (10) and an air channel, the air channel connects the air outlet end of the primary air compressor volute (1) and the air inlet end of the secondary air compressor volute (3), and the air channel is arranged in a ring around the outer side of the water cooling channel (10) and is spaced apart from the water cooling channel (10).
2. The three-stage compression air compressor with heat dissipation by housing according to claim 1, characterized in that, The outer periphery of the water cooling channel (10) has a plurality of spaced apart cooling fins (11), and the plurality of cooling fins (11) extend into the air channel.
3. The three-stage compression air compressor utilizing heat dissipation from the housing of claim 2, wherein, The width direction of the cooling fin (11) is consistent with the radial direction of the motor shell (2), and the plurality of cooling fins (11) are uniformly distributed in the circumferential direction of the water cooling channel (10).
4. The three-stage compression air compressor utilizing heat dissipation from the housing of claim 3, wherein, The cooling fin (11) extends to the outer ring side wall of the air channel along the radial direction of the motor shell (2), and the cooling fin (11) divides the air channel into a plurality of parallel air passages (9).
5. The three-stage compressor air compressor with housing heat dissipation of claim 4, wherein, The length direction of the cooling fin (11) is consistent with the length direction of the motor shell (2), the length of the cooling fin (11) is less than the length of the air channel, and a symmetrical annular buffer zone (8) is formed in the outlet direction of the air channel.
6. The three stage compressor air compressor with housing heat dissipation of claim 1, wherein, The distance between the air channel and the water cooling channel (10) is consistent with the distance between the water cooling channel (10) and the inner cavity of the motor shell (2).
7. The three stage compressor air compressor with housing heat dissipation of claim 1, wherein, The water cooling channel (10) includes a plurality of annular channels with openings, a plurality of the annular channels are spaced apart along the axial direction of the motor shell (2), and two adjacent annular channels are connected by a communication channel, the communication channel includes a first end channel and a second end channel, the first end channel connects the first ends of two adjacent annular channels, the second end channel connects the second ends of two adjacent annular channels, and the first end channel and the second end channel are alternately arranged.
8. The three-stage compression air compressor utilizing housing heat dissipation of claim 7, wherein, The motor shell (2) also has an internal vent hole, the internal vent hole is located between the first end and the second end of the water cooling channel (10) and is spaced apart from the water cooling channel (10), the internal vent hole includes a gas inlet hole (12) and a gas outlet hole (13), the gas inlet hole (12) and the gas outlet hole (13) are spaced apart, one end of the gas inlet hole (12) is communicated with the air channel, and the other end of the gas inlet hole (12) extends into the inner cavity of the motor shell (2); the gas outlet hole (13) communicates the inner cavity of the motor shell (2) with the air cooling outlet of the motor shell (2).
9. The three stage compressor air compressor with housing heat dissipation of claim 1, wherein, The primary air compressor volute (1) has a primary air outlet channel (5), and the secondary air compressor volute (3) has a secondary air inlet channel (6), and the primary air outlet channel (5) and the secondary air inlet channel (6) are respectively communicated with the two ends of the air channel.
10. The three-stage compressor air compressor of claim 9, wherein, The inner cavity of the primary air compressor volute (1) is provided with a pressure end sealing seat (4), and an annular primary air outlet channel (5) is formed between the inner side wall of the primary air compressor volute (1) and the pressure end sealing seat (4); the inner cavity of the secondary air compressor volute (3) is provided with a radial bearing seat (7), and an annular secondary air inlet channel (6) is formed between the secondary air compressor volute (3) and the radial bearing seat (7).