Gas compressor and method for lubricating and / or cooling gas compressor

Abstract

The invention relates to a gas compressor (2) for compressing and / or conveying a gas, said gas compressor (2) having at least one throwing disc (10). The invention relates to a gas compressor (2) having at least one throwing disc (10), which is arranged on a rotatable shaft (8) and is designed to throw a fluid-type lubricating and / or cooling agent (5), in particular oil, outwards in the radial direction during rotation of the shaft (8) in order to lubricate and / or cool at least one component (4) of the gas compressor (2).

Description

Technical Field

[0001] The present invention relates to a gas compressor having a rotary slinger for dispensing lubricant and / or coolant, and a method for using the rotary slinger to lubricate and / or cool at least one component of the gas compressor. Background Technology

[0002] Gas compressors, such as those used in refrigeration and freezing equipment, typically have a small oil pump that delivers lubricant and / or coolant to the moving parts of the gas compressor in order to lubricate and / or cool these parts.

[0003] Such oil pumps increase the number of moving parts in a gas compressor and raise the manufacturing and maintenance costs of such a gas compressor. Summary of the Invention

[0004] The objective of this invention is to simplify the cooling and lubrication of moving parts in a gas compressor.

[0005] The present invention includes a gas compressor for compressing and / or conveying gas. The gas compressor has at least one throwing disc arranged on a rotatable shaft and configured to throw a fluid lubricant and / or coolant, especially oil, radially outward onto at least one component of the gas compressor as the shaft rotates, so as to lubricate at least one component of the gas compressor.

[0006] The present invention also includes a method for lubricating and / or cooling at least one component of a gas compressor, the method comprising: rotating at least one throwing disc disposed in the gas compressor. The at least one throwing disc is configured to throw a fluid lubricant and / or coolant, particularly oil, radially outward onto at least one component of the gas compressor to lubricate the at least one component of the gas compressor.

[0007] This fluid lubricant and / or coolant can be used as a lubricant for lubricating moving parts of a gas compressor, or as a coolant for cooling gas compressor components that generate heat during operation.

[0008] The gas compressor according to the invention and the method according to the invention make it possible to simplify the lubrication and cooling of moving parts in the gas compressor.

[0009] The gas compressor according to the invention and the method according to the invention particularly enable the elimination of conventional oil pumps used for conveying fluid lubricants and / or coolants in the gas compressor.

[0010] This reduces the number of moving parts in the gas compressor and lowers the manufacturing and maintenance costs of the gas compressor.

[0011] In one embodiment, the gas compressor has an oil sump in which fluid lubricant and / or coolant accumulates. In this embodiment, at least one throwing disc may be constructed and arranged such that it is partially immersed in the oil sump to receive fluid lubricant and / or coolant, especially oil, from the oil sump. Therefore, fluid lubricant and / or coolant can be applied to the throwing disc in a simple manner.

[0012] In one embodiment, a fluid lubricant and / or coolant is supplied to the at least one throwing disc along the axial direction of the rotatable shaft. The fluid lubricant and / or coolant can be supplied to the at least one throwing disc, particularly through at least one bearing supporting the rotatable shaft. In this way, the fluid lubricant and / or coolant can be supplied to the at least one throwing disc particularly efficiently. Furthermore, the amount of oil supplied to the at least one throwing disc can be quantified.

[0013] In one embodiment, the at least one throwing disc is configured with a wedge-shaped cross-section at least in its outer region along the radial direction. The throwing disc with a wedge-shaped cross-section at least in its outer region can produce a particularly narrow jet of lubricant and / or coolant. This narrow jet of lubricant and / or coolant can be precisely targeted to the parts or components in the gas compressor that require lubrication and / or cooling.

[0014] In one embodiment, the at least one throwing disc is configured with a wedge-shaped cross-section at least in its outer region along the radial direction. The throwing disc with a wedge-shaped cross-section in its outer region along the radial direction can produce a particularly narrow jet of lubricant and / or coolant, which can be precisely aimed at the parts or components of the gas compressor that require lubrication and / or cooling.

[0015] In one embodiment, the at least one throwing disc is configured with a box-shaped / square-shaped (kastenförmig) cross section or a substantially trapezoidal cross section, at least in its outer region along the radial direction.

[0016] A wider spray jet can be produced by using a throwing disc with a box-shaped or substantially trapezoidal cross-section constructed in its outer region along the radial direction than by using a throwing disc constructed at least in its outer region as a wedge.

[0017] With this wider spray jet, a larger area of ​​lubricant and / or coolant within the gas compressor can be supplied compared to the narrow spray jet produced by a wedge-shaped throwing disc.

[0018] In one embodiment, the at least one throwing disk is rounded on its outer periphery. The rounded throwing disk generates a diffuse jet with an undefined direction, which is broadly fan-shaped.

[0019] In one embodiment, a three-dimensional structure, such as grooves and / or protrusions, is formed on at least one side of the at least one throwing disc. These three-dimensional structures may extend radially from the inside to the outside.

[0020] The three-dimensional structure constructed on at least one side of the throwing disc enables the fluid lubricant and / or coolant to be guided along a predetermined trajectory to the outer periphery of the throwing disc. This three-dimensional structure on at least one side of the at least one throwing disc allows for the targeted shaping of the lubricant and / or coolant jet generated by the throwing disc, thereby enabling targeted lubrication and / or cooling of the moving parts of the gas compressor.

[0021] In one embodiment, a three-dimensional structure, particularly a paddle-shaped member, is constructed on the outer periphery of the at least one throwing disc, extending radially outward from the outer periphery of the at least one throwing disc.

[0022] Such a three-dimensional structure, extending radially outward from the outer periphery of the at least one throwing disc, enables an increase in the amount of lubricant and / or coolant delivered by the at least one throwing disc. Furthermore, the three-dimensional structure allows for the shaping of the lubricant and / or coolant jet generated by the throwing disc for targeted lubrication and / or cooling of the moving parts of the gas compressor.

[0023] In one embodiment, the diameter of the at least one throwing disc is 1.05 to 6 times the diameter of the shaft. Specifically, the diameter of the at least one throwing disc is 1.5 to 2.5 times the diameter of the shaft.

[0024] For example, the diameter of the shaft can be 10 mm, while the outer diameter of the throwing disc can be, for example, 18 mm.

[0025] The diameter should be adjusted individually for each application. In addition to the centrifugal force depending on the rotational speed and diameter of the throwing disc, the viscosity or adhesion properties of the lubricant and / or coolant are also crucial for achieving the correct release point.

[0026] A throwing disc of this size can throw lubricant and / or coolant onto at least one moving part of a gas compressor with particularly high efficiency.

[0027] In one embodiment, the gas compressor has a drive, particularly a motor, configured to rotate a shaft on which the at least one throwing disc is mounted about its longitudinal axis.

[0028] The drive can also be a drive used to operate a gas compressor. Alternatively, the drive can be a separate drive specifically designed to drive a shaft equipped with a throwing disc.

[0029] The drive can be configured to rotate the at least one throwing disc about its longitudinal axis at a speed in the range of 5 rpm to 6000 rpm, especially at a speed in the range of 500 rpm to 3000 rpm.

[0030] It has been proven that a throwing disc rotating at speeds within this range is particularly effective for throwing fluid lubricant and / or coolant onto at least one component of a gas compressor that needs to be lubricated and / or cooled. Attached Figure Description

[0031] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0032] Figure 1 A schematic diagram of a gas compressor with a throwing disc according to an embodiment of the present invention is shown.

[0033] Figure 2 An enlarged view of a rotatable shaft with a throwing disc is shown, wherein the rotatable shaft is supported by bearings.

[0034] Figure 3 An enlarged view of the throwing disc according to the invention is shown, which is partially immersed in a fluid lubricant and / or coolant.

[0035] Figure 4A A side view of an embodiment of a throwing disc with a paddle-shaped structure is shown.

[0036] Figure 4B It shows Figure 4A A schematic top view of the throwing disc shown.

[0037] Figure 5 An embodiment of a throwing disc with a wedge-shaped profile that tapers outwards is shown.

[0038] Figure 6 An embodiment of a throwing disc with a trapezoidal profile or cross-section and flat edges is shown.

[0039] Figure 7 An embodiment of a throwing disc with a trapezoidal profile or cross-section and rounded edges is shown.

[0040] Figure 8 An embodiment of a throwing disc with a fully rounded profile is shown. Detailed Implementation

[0041] Figure 1 A schematic diagram of a gas compressor 2 constructed according to an embodiment of the present invention is shown.

[0042] The gas compressor 2 includes at least one component 4 that needs to be lubricated and / or cooled during operation, such as a rotating shaft, a transmission device, or a piston movably arranged in a cylinder.

[0043] An oil sump 6 is constructed in the lower region of the gas compressor 2, in which fluid lubricant and / or coolant 5, especially oil, is present.

[0044] Above the oil tank 6 is a rotatable shaft 8, on which at least one throwing disc 10 is constructed, such that the throwing disc rotates integrally with the rotatable shaft 8. The at least one throwing disc 10 may be mounted on the rotatable shaft 8 or integrally formed with the rotatable shaft 8.

[0045] The at least one throwing disc 10 may be made of metal or plastic.

[0046] Medium-resistant metals, such as stainless steel (e.g., 1.4404 stainless steel), are well-suited for this purpose. More economical alternatives are low-carbon steel or plastics, such as PA66, due to their lower mechanical load. Centrifugal load should only be considered in material selection at very large diameters and rotational speeds.

[0047] The gas compressor 2 has at least one drive 12, particularly a motor, which is configured to enable a rotating shaft 8 to rotate about its longitudinal axis during operation.

[0048] The rotatable shaft 8 can be coupled to the driver 12 of the gas compressor 2, such that the rotatable shaft and the gas compressor 2 are driven together. Alternatively, the gas compressor 2 can have a separate driver 12 for driving the rotatable shaft 8.

[0049] Despite Figure 1 The illustration shows only one rotating shaft 8 with a single throwing disc 10, but the gas compressor 2 according to one embodiment of the invention may also have multiple rotatable shafts 8. One or more throwing discs 10 may be constructed on each rotatable shaft 8.

[0050] The throwing disc 10 is arranged above the oil tank 6, such that the lower part of the throwing disc 10 is immersed in the fluid lubricant and / or coolant 5 located in the oil tank 6.

[0051] When the rotatable shaft 8 rotates with the throwing disc 10, the throwing disc 10 throws the fluid lubricant and / or coolant 5 received in the oil tank 6 as a lubricant and coolant jet 15 onto at least one component 4 to be lubricated and / or cooled. Thus, the at least one component 4 to be lubricated and / or cooled is lubricated by the fluid lubricant and / or coolant 5.

[0052] Alternatively or additionally, fluid lubricant and / or coolant 5 can be directed to the throwing disc 10 along the rotatable shaft 8.

[0053] Figure 2 An enlarged schematic diagram of a rotatable shaft 8 with a throwing disc 10 is shown, wherein the rotatable shaft 8 is supported in a bearing 14.

[0054] A lubrication channel 16 is constructed between the bearing 14 and the rotatable shaft 8, which allows the rotatable shaft 8 to be lubricated in the bearing 14. At least one oil channel 18 is also constructed in the bearing 14, which allows fluid lubricant and / or coolant 5, especially oil, to be guided from the outside into the lubrication channel 16 in order to lubricate the rotatable shaft 8 in the bearing 14.

[0055] A portion of the fluid lubricant and / or coolant 5 supplied to the lubrication channel 16 flows out from the side of the bearing 14 and axially along the outer circumference of the rotating shaft 8 to the throwing disc 10. The fluid lubricant and / or coolant 5 arriving at the rotating throwing disc 10 is thrown by the rotating throwing disc 10 onto at least one component 4 to be lubricated and / or cooled, in order to lubricate and / or cool that component, as for... Figure 1 As described in the illustrated embodiment.

[0056] Figure 3 An enlarged schematic diagram of a throwing disc 10 according to the invention is shown, which is mounted on a rotatable shaft 8 and immersed in a fluid lubricant and / or coolant 5, as in combination. Figure 1 As described.

[0057] A three-dimensional structure 22, particularly grooves and / or protrusions, is constructed on at least one side 20 of the throwing disc 10. The three-dimensional structure 22 constructed on at least one side 20 of the throwing disc 10 enables fluid lubricant and / or coolant 5 to be guided along a predetermined trajectory to the outer periphery of the throwing disc 10.

[0058] Alternatively or additionally, a three-dimensional structure 24, particularly a paddle-shaped structure 24, may be constructed on the outer periphery of the throwing disc 10, extending radially outward from the outer periphery of the throwing disc 10. This three-dimensional structure 24, particularly the paddle-shaped component, can receive additional lubricant and / or coolant 5 when immersed in the oil tank 6, such as... Figure 3 As shown.

[0059] Figure 4A and Figure 4B An alternative embodiment is illustrated schematically, wherein the throwing disc 10 has a paddle-shaped structure 24 that extends axially from two sides 20 of the throwing disc 10.

[0060] The paddle-shaped structure 24 can be constructed in particular as circular, rectangular and / or cantilevered.

[0061] Through this construction, the three-dimensional structures 22 and 24 on the throwing disk 10 are created, such as Figure 3 , Figure 4A and Figure 4B As exemplarily shown, the amount and / or spatial distribution of the lubricant and coolant jets 15 generated by the rotating throwing disc 10 can be influenced and adjusted.

[0062] The amount and / or spatial distribution of the lubricant and coolant jets 15 generated by the rotating throwing disc 10 can also be affected by selecting the profile / cross section of the throwing disc 10.

[0063] Figure 5 An embodiment of a throwing disc 10 with a wedge-shaped profile / cross-section that tapers outwards is illustrated schematically. This throwing disc 10 produces a particularly narrow jet 15 of lubricant and / or coolant, which can be precisely aimed at the part or component 4 to be lubricated and / or cooled.

[0064] Figure 6 and Figure 7 An embodiment of a throwing disc 10 with a trapezoidal profile or cross-section is illustrated in schematic diagram.

[0065] exist Figure 6 In the illustrated embodiment, the outer edge 11 of the throwing disc 10 is constructed flat. Figure 7 In the embodiment shown, the outer edge 11 of the throwing disc 10 is rounded.

[0066] A throw disc 10 with a trapezoidal profile produces a wider jet of lubricant and / or coolant 15 than a throw disc 10 with a gradually tapering profile / cross-section. Therefore, with a single throw disc 10, a trapezoidal throw disc 10 can cover a larger area to be lubricated and / or cooled than a wedge-shaped throw disc 10.

[0067] Figure 8 An embodiment of a throwing disc 10 with a fully rounded profile is shown. This rounded throwing disc 10 may, for example, have an oval or elliptical profile. However, the shape of this throwing disc 10 is not limited to oval and elliptical profiles. The throwing disc 10 with a rounded profile produces a particularly wide jet 15 of lubricant and / or coolant, which can cover a particularly wide area to be lubricated and / or cooled.

Claims

1. A gas compressor (2) for compressing and / or conveying gas, wherein, The gas compressor (2) has at least one throwing disc (10) arranged on a rotatable shaft (8), and the at least one throwing disc is configured to throw fluid lubricant and / or coolant (5), especially oil, outward in a radial direction when the shaft (8) rotates, so as to lubricate and / or cool at least one component (4) of the gas compressor (2).

2. The gas compressor (2) according to claim 1, wherein, The at least one throwing disc (10) is immersed in the oil tank (6) to receive the fluid lubricant and / or coolant (5), especially oil.

3. The gas compressor (2) according to claim 1 or 2, wherein, The gas compressor (2) is configured to supply fluid lubricant and / or coolant (5) to the at least one throwing disc (10) along the rotatable shaft (8), wherein the fluid lubricant and / or coolant (5) is supplied to the at least one throwing disc (10) in particular through a bearing (14) supporting the rotatable shaft (8).

4. The gas compressor (2) according to any one of the preceding claims, wherein, The at least one throwing disc (10) is constructed with a wedge-shaped cross section at least in the outer region along the radial direction.

5. The gas compressor (2) according to any one of the preceding claims, wherein, The at least one throwing disc (10) is configured with a substantially box-shaped cross section or a substantially trapezoidal cross section, at least in the outer region along the radial direction.

6. The gas compressor (2) according to any one of the preceding claims, wherein, The at least one throwing disc (10) is rounded on its outer periphery.

7. The gas compressor (2) according to any one of the preceding claims, wherein, At least one side (20) of the at least one throwing disc (10) is constructed with a three-dimensional structure (22), in particular grooves and / or protrusions.

8. The gas compressor (2) according to claim 7, wherein, The three-dimensional structure (22) extends from the inside to the outside in the radial direction.

9. The gas compressor (2) according to any one of the preceding claims, wherein, A three-dimensional structure (24), particularly a paddle-shaped element (24), is constructed on the outer periphery of the at least one throwing disk (10) extending radially outward from the outer periphery of the at least one throwing disk (10).

10. The gas compressor (2) according to any one of the preceding claims, wherein, The diameter of the at least one throwing disc (10) is 1.05 to 6 times the diameter of the rotatable shaft (8), wherein the diameter of the at least one throwing disc (10) is in particular 1.5 to 2.5 times the diameter of the rotatable shaft (8).

11. The gas compressor (2) according to any one of the preceding claims, wherein, The gas compressor (2) has a driver (12) configured to rotate the rotatable shaft (8) with the at least one throwing disc (10) at a speed in the range of 5 rpm to 6000 rpm, especially at a speed in the range of 500 rpm to 3000 rpm.

12. A method for lubricating and / or cooling at least one component (4) of a gas compressor (2), wherein, The method includes rotating at least one throwing disc (10) arranged in the gas compressor (2), the at least one throwing disc being configured to throw fluid lubricant and / or coolant (5), especially oil, outward in a radial direction.

13. The method according to claim 12, wherein, The method includes rotating the at least one throwing disc (10) at a rotational speed in the range of 5 rpm to 6000 rpm, particularly in the range of 500 rpm to 3000 rpm.

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