Air compressor water cooling structure, air compressor shell and air compressor

Abstract

The utility model provides an air compressor water cooling structure, an air compressor shell and an air compressor, and belongs to the technical field of air compressors, the air compressor water cooling structure comprises a liquid inlet, a liquid outlet and a water channel body; the water channel body is located in the shell and communicates with the liquid inlet and the liquid outlet. The front end of the water channel body is provided with an end cooling water channel distributed in the circumferential direction of the air compressor shell, and the width direction of the end cooling water channel extends into the integrated radial bearing seat. According to the water cooling structure of the air compressor, the water channel is formed in the radial bearing seat integrally arranged with the shell, the cooling coverage area of the water channel on the radial bearing seat and the end face of the front end of the shell is increased, then the radial bearing seat and the thrust bearing seat are cooled, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air compressors, and more specifically, relates to an air compressor water cooling structure, an air compressor housing and an air compressor. Background Art

[0002] Existing air compressors mostly use a cooling method that combines water cooling and air cooling, wherein air cooling is mostly used to cool the thrust bearing and the center shaft, while water cooling is mostly used to cool the housing structure and the inner cavity of the housing.

[0003] The water-cooling channels in the air compressor casing are mostly continuous and winding, covering the middle part of the casing. Since the water-cooling channels are far away from the axial end face of the casing, the radial bearing seat, thrust bearing and other structures connected to the end face of the casing cannot be cooled by the water-cooling channels in the casing and can only rely on air cooling. The air-cooling flow channel structure is limited by the design of the fixed area. When the temperature of the thrust bearing is too high, the air cooling effect is not significant, which can easily lead to the thrust bearing burning and failure due to excessive temperature.

[0004] The current air compressor's air-cooling structure and water-cooling structure are relatively independent and far apart. After passing through the impeller at the inlet, the gas is drawn into the system by internal air. Under normal operating conditions, the introduced gas will have a certain temperature. Currently, the gas will first pass through the air-cooling flow channel before entering the system, and then be cooled by water before being output. The air-cooling channel and water-cooling channel under the current structure are far apart and the cooling effect is poor. Utility Model Content

[0005] The purpose of the utility model is to provide an air compressor water cooling structure, an air compressor housing and an air compressor, aiming to increase the coverage area of the water cooling structure and optimize the cooling effect of the thrust bearing.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an air compressor water cooling structure, including a liquid inlet, a liquid outlet and a water channel body; the water channel body is located in the shell and connects the liquid inlet and the liquid outlet; the front end of the water channel body has an end cooling water channel distributed along the circumference of the air compressor shell, and the width direction of the end cooling water channel extends into the integrated radial bearing seat.

[0007] As another embodiment of the present application, the end cooling water channel includes a first cooling part located in the shell and a second cooling part located in the integrated radial bearing seat, and the first cooling part and the second cooling part are connected.

[0008] As another embodiment of the present application, the first cooling portion and the second cooling portion are connected via a conformal bending portion.

[0009] As another embodiment of the present application, the second cooling portion extends radially to the middle of the integrated radial bearing seat.

[0010] As another embodiment of the present application, the water channel body also includes a tail cooling water channel and a middle cooling water channel, the end cooling water channel is located at the front end of the middle cooling water channel and is connected to the middle cooling water channel; the middle cooling water channel includes a first middle arc water channel and a second middle arc water channel that are relatively arranged, and the inlet and outlet of the tail cooling water channel are respectively connected to the rear end of the first middle arc water channel and the rear end of the second middle arc water channel; the liquid inlet is connected to the second middle arc water channel, and the liquid outlet is connected to the end cooling water channel.

[0011] As another embodiment of the present application, the first central arc-shaped water channel includes a first transition section and a second transition section arranged axially at intervals, the first transition section is located on the rear side of the second transition section, the inlet of the first transition section is connected to the outlet of the tail cooling water channel, and the first transition section, the second transition section and the end cooling water channel are connected in sequence.

[0012] As another embodiment of the present application, the second middle arc-shaped water channel includes a liquid inlet section and a liquid outlet section spaced apart in the axial direction, the liquid inlet section is located behind the liquid outlet section, the inlet of the liquid inlet section is connected to the liquid inlet, and the outlet of the liquid inlet section is connected to the inlet of the tail cooling water channel;

[0013] The end cooling water channel includes a first end water channel and a second end water channel distributed at intervals. The first end water channel is arranged opposite to the second end water channel. The inlet and outlet of the first end water channel are respectively connected to the outlet of the first middle arc-shaped water channel and the inlet of the liquid outlet section; the inlet and outlet of the second end water channel are respectively connected to the outlet of the liquid outlet section and the liquid outlet.

[0014] As another embodiment of the present application, the central angle of the arc of the liquid outlet section is greater than the central angle of the arc of the second end water channel, the inlet end of the liquid outlet section extends to one side of the outlet of the first end water channel, the liquid outlet section and the first end water channel are connected by a notch extending along the axial direction, and the outlet end of the liquid outlet section is flush with the inlet end of the second end water channel.

[0015] The beneficial effects of the air compressor water-cooling structure provided by the utility model are as follows: compared with the prior art, the air compressor water-cooling structure of the utility model opens a water channel body in the air compressor casing, and the water channel body is used for liquid flow and cooling the air compressor; the water channel body is located at the end of the front end of the air compressor casing, and the cooling water channel extends to the casing in the integrated bearing seat. By making a water channel in the radial bearing seat integrally arranged with the casing, the cooling coverage area of the water channel on the radial bearing seat and the front end face of the casing is increased, thereby cooling and cooling the radial bearing seat and the thrust bearing seat, thereby improving the cooling effect.

[0016] Also provided is an air compressor housing, comprising the above-mentioned air compressor water cooling structure.

[0017] The beneficial effect of the air compressor housing provided by the utility model is that: compared with the existing technology, the air compressor housing of the utility model is cooled by opening a water channel, and adopts the above-mentioned air compressor water-cooling structure, which has all the beneficial effects it has. By making a water channel in the radial bearing seat integrally arranged with the housing, the cooling coverage area of the water channel on the radial bearing seat and the front end face of the housing is increased, thereby cooling and reducing the temperature of the radial bearing seat and the thrust bearing seat, thereby improving the cooling effect.

[0018] An air compressor is also provided, comprising the above-mentioned air compressor housing.

[0019] The beneficial effects of the air compressor provided by the utility model are: compared with the prior art, the air compressor of the utility model adopts the above-mentioned air compressor housing to improve the cooling effect; reduce the gas temperature in the air cooling channel on the rear side of the thrust bearing, and cool the thrust bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of an air compressor provided in an embodiment of the present utility model;

[0022] Figure 2 A longitudinal cross-sectional view of an air compressor housing provided by an embodiment of the present utility model;

[0023] Figure 3 A top view of the air compressor housing provided by an embodiment of the present utility model;

[0024] Figure 4 For the Figure 3 Cross-sectional view along line AA;

[0025] Figure 5 For the Figure 3 Cross-sectional view along the midline BB;

[0026] Figure 6 For the Figure 3 Cross-sectional view along the mid-CC line;

[0027] Figure 7 For the Figure 3 Cross-sectional view along the mid-DD line.

[0028] In the figure: 1. Shell; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. Tail cooling water channel; 5. Liquid inlet section; 6. Liquid outlet section; 7. First end water channel; 8. Thrust bearing seat; 9. Air cooling channel; 10. First filter section; 11. Second filter section; 12. Second end water channel. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] See also Figures 1 to 7 The air compressor water-cooling structure, air compressor housing 1, and air compressor provided by the present invention are now described. The air compressor water-cooling structure comprises a liquid inlet, a liquid outlet, and a water channel body. The water channel body is located within the housing 1 and connects the liquid inlet and the liquid outlet. The front end of the water channel body has end cooling water channels distributed along the circumference of the air compressor housing 1. The width direction of the end cooling water channels extends into the integrated radial bearing seat.

[0031] Compared with the prior art, the air compressor water cooling structure provided by the present invention has a water channel body opened in the housing 1 of the air compressor, and the water channel body is used for liquid flow and cooling the air compressor; the water channel body is located at the end of the front end of the air compressor housing 1, and the cooling water channel extends into the integrated bearing seat. By making a water channel in the integrated radial bearing seat, the cooling coverage area of the water channel on the radial bearing seat and the front end face of the housing 1 is increased, thereby cooling and cooling the radial bearing seat and the thrust bearing seat 8, thereby improving the cooling effect.

[0032] The liquid inlet is connected to the liquid inlet pipe 2, and the liquid outlet is connected to the liquid outlet pipe 3.

[0033] In some possible embodiments, see Figure 2 The end cooling water channel includes a first cooling part located in the shell 1 and a second cooling part located in the integrated radial bearing seat, and the first cooling part and the second cooling part are connected.

[0034] The end cooling water channel is an arc-shaped water channel cavity in the water channel body located at the end of the shell 1, and the annular water channel cavity is located in the same plane.

[0035] The end cooling water channel is limited by the structural constraints of the housing 1's end. The front end of the housing 1 is equipped with a radial bearing seat, integral with the housing 1, known as an integrated radial bearing seat. This integrated radial bearing seat is radially close to the central axis of the housing 1. To improve cooling of the integrated radial bearing seat, a secondary cooling section is provided within the integrated radial bearing seat. The primary cooling section is located at the front of the housing 1 and communicates with the secondary cooling section. Liquid in the first cooling section flows into the second cooling section, cooling the integrated radial bearing seat.

[0036] The first cooling part and the second cooling part can be connected through a plurality of through holes; the first cooling part and the second cooling part can be separated and through holes can be provided at the inlet and outlet ends of both to form parallel cold water channels.

[0037] Alternatively, the first cooling section and the second cooling section are connected via a conformal bend. The conformal bend is an inclined connecting notch located at the front connection of the housing 1 and the integrated radial bearing seat, connecting the first cooling section and the second cooling section to form an integrated cooling water channel.

[0038] In some possible embodiments, see Figure 2 The second cooling portion extends radially to the middle of the integrated radial bearing seat; the second cooling portion is spaced apart from the air cooling channel 9 opened on the rear side of the thrust bearing seat 8.

[0039] The second cooling part is connected to the edge of the transversely arranged first cooling part by means of a conformal bending part. The second cooling part is distributed along the thickness direction of the integrated radial bearing seat, that is, the thickness direction of the second cooling part is consistent with the axial direction of the shell 1, and the width direction of the second cooling part extends along the radial direction of the shell 1 toward the central axis until it extends to the middle of the integrated radial bearing seat, so as to increase the coverage area of water cooling and further improve the cooling effect of the integrated radial bearing seat.

[0040] During air compressor installation, the thrust bearing seat 8 is mounted in close proximity to the front of the integrated radial bearing seat. The air-cooling structure, which complements the water-cooling structure, must pass through the thrust bearing seat 8 and form an air-cooling channel 9 behind the thrust bearing seat 8. Since the second cooling section extends into the interior of the integrated radial bearing seat, it is spaced apart from the air-cooling channel 9 between the thrust bearing seat 8 and the integrated radial bearing seat. The cryogenic liquid within the second cooling section can transfer heat through the integrated radial bearing seat, cooling the integrated radial bearing seat. This lowers the temperature of the gas within the air-cooling channel 9, which in turn cools the gas within the air-cooling channel 9. This lowered temperature further enhances the cooling and refrigerant effect on the thrust bearing.

[0041] In some possible embodiments, see Figures 2 to 7The water channel body also includes a tail cooling water channel 4 and a middle cooling water channel. The end cooling water channel is located at the front end of the middle cooling water channel and is connected to the middle cooling water channel; the middle cooling water channel includes a first middle arc-shaped water channel and a second middle arc-shaped water channel that are arranged opposite to each other. The inlet and outlet of the tail cooling water channel 4 are respectively connected to the rear end of the first middle arc-shaped water channel and the rear end of the second middle arc-shaped water channel; the liquid inlet is connected to the second middle arc-shaped water channel, and the liquid outlet is connected to the end cooling water channel.

[0042] The water channel body of the shell 1 comprises, arranged from rear to front, a tail cooling channel 4, a middle cooling channel, and end cooling channels. The tail cooling channel 4 is an annular structure with a clearance notch, primarily used to make way for the air cooling channel 9. To ensure its strength and to make way for the air cooling channel 9, the middle cooling channel is divided into two separate halves, each of which is disconnected. A first middle curved channel and a second middle curved channel are located within each half, connecting to the two ports of the tail cooling channel 4, forming a connected waterway.

[0043] Based on the installation positions of the liquid inlet and outlet, the liquid inlet is positioned on the middle cooling water channel, and the liquid outlet is positioned on the end cooling water channel. Based on the clearance of the air cooling channel 9 and the distribution of the water cooling structure, the middle cooling water channel is divided into two groups, namely the first middle curved water channel and the second middle curved water channel. After the liquid enters the second middle curved water channel from the liquid inlet, it enters the tail cooling water channel 4, the first middle curved water channel, and the end cooling water channel in sequence, and finally discharges from the liquid outlet.

[0044] like Figures 2 to 7 As shown, the first middle arc-shaped water channel includes a first transition section and a second transition section arranged at intervals along the axial direction. The first transition section is located on the rear side of the second transition section. The inlet of the first transition section is connected to the outlet of the tail cooling water channel 4. The first transition section, the second transition section and the first end water channel 7 are connected in sequence.

[0045] After the liquid enters the tail cooling water channel 4 through the second middle curved water channel, it enters the first transition section of the first middle curved water channel from the tail cooling water channel 4. The first and second transition sections are both curved structures, with the outlet of the first transition section and the inlet of the second transition section located at the same end, connected by a notch in the housing 1. The inlet and outlet of the first transition section are located at the two ends of its length.

[0046] The second transition section is communicated with the end cooling water channel and is connected to the liquid outlet via the end cooling water channel.

[0047] like Figures 2 to 7As shown, the second middle arc-shaped water channel includes a liquid inlet section 5 and a liquid outlet section 6 arranged at intervals along the axial direction. The liquid inlet section 5 is located on the rear side of the liquid outlet section 6. The inlet of the liquid inlet section 5 is connected to the liquid inlet, and the outlet of the liquid inlet section 5 is connected to the inlet of the tail cooling water channel 4; the end cooling water channel includes a first end water channel 7 and a second end water channel 12 distributed at intervals. The first end water channel 7 and the second end water channel 12 are arranged opposite to each other, and the inlet and outlet of the first end water channel 7 are respectively connected to the outlet of the first middle arc-shaped water channel and the inlet of the liquid outlet section 6; the inlet and outlet of the second end water channel 12 are respectively connected to the outlet and the liquid outlet of the liquid outlet section 6.

[0048] The second central curved water channel is connected to the liquid inlet and is positioned opposite the first central curved water channel. Correspondingly, the second central curved water channel is divided into two axially spaced arcuate segments: a liquid inlet segment 5 and a liquid outlet segment 6. Considering the spacing between the liquid inlet and outlet, the liquid inlet segment 5, which connects to the liquid inlet, is located at the rear, while the liquid outlet segment 6 is located in front of the liquid inlet segment 5, but is not connected to the liquid inlet segment 5.

[0049] The outlet of the liquid inlet section 5 is connected to the inlet of the tail cooling water channel 4. The liquid enters the tail cooling water channel 4 from the liquid inlet section 5, then passes through the first transition section, the second transition section, and the first end water channel 7 in sequence before entering the liquid outlet section 6. Finally, it enters the second end water channel 12 from the liquid outlet section 6 and is finally discharged from the liquid outlet connected to the second end water channel 12.

[0050] The first transition section and the liquid inlet section 5 are located in the same plane and are arranged opposite to each other. The second transition section and the liquid outlet section 6 are located in the same plane and are arranged opposite to each other.

[0051] like Figure 6 、 Figure 7 As shown, the central angle of the arc of the liquid outlet section 6 is greater than the central angle of the arc of the second end water channel 12, the inlet end of the liquid outlet section 6 extends to one side of the outlet of the first end water channel 7, the liquid outlet section 6 and the first end water channel 7 are connected by a notch extending in the axial direction, and the outlet end of the liquid outlet section 6 is flush with the inlet end of the second end water channel 12.

[0052] The coverage area of the liquid outlet section 6 is larger than that of the second end water channel 12. One end of the liquid outlet section 6 is flush with the end of the second end water channel 12, while the other end extends beyond the other end of the second end water channel 12 and covers one side of the first end water channel 7. The inlet end of the liquid outlet section 6 is connected to the first end water channel 7 through a notch, and the outlet end is connected to the second end water channel 12.

[0053] The liquid flow path is: liquid inlet → liquid inlet section 5 → tail cooling water channel 4 → first transition section → second transition section → first end water channel 7 → liquid outlet section 6 → second end water channel 12 → liquid outlet. The liquid inlet section 5 and first transition section are opposite each other, the liquid outlet section 6 and second transition section are opposite each other, and the first end water channel 7 and second end water channel 12 are opposite each other.

[0054] An air compressor housing 1 is also provided, comprising the above-mentioned air compressor water cooling structure.

[0055] Compared with the prior art, the air compressor housing 1 provided by the present invention is cooled by providing a water channel inside the housing 1 and adopts the above-mentioned air compressor water-cooling structure, which has all the beneficial effects thereof. By providing a water channel inside the radial bearing seat integrally provided with the housing 1, the cooling coverage area of the water channel on the radial bearing seat and the front end face of the housing 1 is increased, thereby cooling and reducing the temperature of the radial bearing seat and the thrust bearing seat 8, thereby improving the cooling effect.

[0056] An air compressor is also provided, comprising the above-mentioned air compressor housing 1, and also comprising a thrust bearing seat 8, the back side of the thrust bearing seat 8 is provided with an air cooling groove opening facing backward; the notch of the air cooling groove is fitted with the front end face of the integrated radial bearing seat to form an air cooling channel 9.

[0057] Compared with the prior art, the air compressor provided by the present invention adopts the above-mentioned air compressor casing 1. By making a water channel in the radial bearing seat integrally provided with the casing 1, the cooling coverage area of the water channel on the radial bearing seat and the front end face of the casing 1 is increased, thereby cooling and reducing the temperature of the radial bearing seat and the thrust bearing seat 8, thereby improving the cooling effect; at the same time, the air cooling channel 9 is attached to the integrated radial bearing seat, and the water channel will further cool the gas in the air cooling channel 9 while cooling the integrated radial bearing seat, thereby achieving the effect of reducing the gas temperature in the air cooling channel 9 and cooling the thrust bearing.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The air compressor water cooling structure is characterized by: It comprises a liquid inlet, a liquid outlet and a water channel body; the water channel body is located in the housing (1) and is connected to the liquid inlet and the liquid outlet; the front end of the water channel body has an end cooling water channel distributed along the circumference of the air compressor housing, and the width direction of the end cooling water channel extends into the integrated radial bearing seat.

2. The air compressor water cooling structure according to claim 1, characterized in that: The end cooling water channel comprises a first cooling portion located in the housing (1) and a second cooling portion located in the integrated radial bearing seat, and the first cooling portion and the second cooling portion are in communication.

3. The air compressor water cooling structure according to claim 2, characterized in that: The first cooling portion and the second cooling portion are connected via a conformal bending portion.

4. The air compressor water cooling structure according to claim 2, characterized in that: The second cooling portion extends radially to a middle portion of the integrated radial bearing seat.

5. The air compressor water cooling structure according to claim 1, characterized in that: The water channel body further comprises a tail cooling water channel (4) and a middle cooling water channel, the end cooling water channel is located at the front end of the middle cooling water channel and is connected to the middle cooling water channel; the middle cooling water channel comprises a first middle arc-shaped water channel and a second middle arc-shaped water channel which are arranged opposite to each other, the inlet and outlet of the tail cooling water channel (4) are respectively connected to the rear end of the first middle arc-shaped water channel and the rear end of the second middle arc-shaped water channel; the liquid inlet is connected to the second middle arc-shaped water channel, and the liquid outlet is connected to the end cooling water channel.

6. The air compressor water cooling structure according to claim 5, characterized in that: The first middle arc-shaped water channel includes a first transition section and a second transition section spaced apart in the axial direction, the first transition section is located at the rear side of the second transition section, the inlet of the first transition section is connected to the outlet of the tail cooling water channel (4), and the first transition section, the second transition section and the end cooling water channel are connected in sequence.

7. The air compressor water cooling structure according to claim 6, characterized in that: The second middle arc-shaped water channel comprises a liquid inlet section (5) and a liquid outlet section (6) spaced apart in the axial direction, wherein the liquid inlet section (5) is located at the rear side of the liquid outlet section (6), the inlet of the liquid inlet section (5) is connected to the liquid inlet, and the outlet of the liquid inlet section (5) is connected to the inlet of the tail cooling water channel (4); The end cooling water channel comprises a first end water channel (7) and a second end water channel (12) which are spaced apart. The first end water channel (7) and the second end water channel (12) are arranged opposite to each other. The inlet and outlet of the first end water channel (7) are respectively connected to the outlet of the first middle arc-shaped water channel and the inlet of the liquid outlet section (6); the inlet and outlet of the second end water channel (12) are respectively connected to the outlet of the liquid outlet section (6) and the liquid outlet.

8. The air compressor water cooling structure according to claim 7, characterized in that: The central angle of the arc of the liquid outlet section (6) is greater than the central angle of the arc of the second end water channel (12); the inlet end of the liquid outlet section (6) extends to one side of the outlet of the first end water channel (7); the liquid outlet section (6) and the first end water channel (7) are connected via a notch extending in the axial direction; the outlet end of the liquid outlet section (6) is flush with the inlet end of the second end water channel (12).

9. The air compressor housing is characterized in that: It comprises the air compressor water cooling structure as described in any one of claims 1-8.

10. Air compressor, characterized in that, Comprising the air compressor housing as claimed in claim 9.

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