CN215949867U - Compressor, centrifugal compressor, air compressor, automobile and air conditioner - Google Patents

Abstract

The utility model provides a compressor, a centrifugal compressor, an air compressor, an automobile and an air conditioner. The compressor comprises a thrust disc assembly and a rotating shaft, wherein the thrust disc assembly is sleeved on the rotating shaft and is in clearance fit with the rotating shaft. The compressor, the centrifugal compressor, the air compressor, the automobile and the air conditioner provided by the utility model combine the diffuser, the thrust disc and the main and auxiliary axial bearings to form the thrust disc assembly, then the thrust disc assembly is installed on the rotating shaft, when the axial clearance needs to be adjusted, the thrust disc assembly can be directly detached from the rotating shaft integrally, so that the axial bearing clearance can be adjusted to be within a proper size range before the compressor integral structure is installed, the bearing can provide larger bearing capacity, meanwhile, the thrust disc assembly can perform integral detection and integral assembly, the superposition assembly error is reduced, the repeated assembly and disassembly on the whole compressor is avoided, the precision retentivity of parts is influenced, and the assembly efficiency can be improved.

Description

Compressor, centrifugal compressor, air compressor, automobile and air conditioner

Technical Field

The utility model relates to the technical field of compression equipment, in particular to a compressor, a centrifugal compressor, an air compressor, an automobile and an air conditioner.

Background

The hydrogen fuel cell automobile is the most strategic breakthrough of a 21 st century new energy automobile, has the advantages of high power performance, quick hydrogenation, long endurance and the like, and the air compressor provides a high-pressure air source for a fuel cell system and is commonly a centrifugal air compressor, a screw air compressor, a vortex air compressor and the like. Compared with a screw compressor and a scroll compressor, the centrifugal air compressor can provide an air source with a higher pressure ratio, and can obviously improve the power density and the overall performance of the electric pile. The centrifugal air compressor adopting the dynamic pressure gas bearing has a series of advantages of small friction loss, high rotating speed, good high-temperature stability, no need of lubricating oil and the like, and has very wide application prospect.

Foil dynamical pressure gas axial bearing belongs to one kind of slide bearing, and a dynamical pressure gas suspension air compressor machine will generally adopt and set up an axial bearing respectively at the both ends of pivot. The foil dynamic pressure gas axial bearing has the working principle of dynamic pressure effect, is positioned on one side of the thrust disc, is of a harmonious star structure and forms a wedge-shaped gap with the action surface of the thrust disc. When the rotating shaft rotates at a high speed, gas with certain viscosity is continuously brought into the wedge-shaped gap, the gas continuously enters the wedge-shaped gap to enable the gas film to generate certain pressure, and when the gas film force is enough to balance the axial load of the rotating shaft, the thrust disc can keep a stable state in the horizontal direction between the axial forces generated by the two axial bearings. According to the distribution of the bearing structure, when the foil dynamical pressure gas axial bearing works, a high-pressure gas film is formed through a dynamical pressure effect, so that a balance load in the horizontal direction is provided for the rotor, and the rotor is completely in a suspended state. Therefore, the performance of a high-pressure air film formed between the axial bearing and the thrust disc directly influences the running performance of the air compressor.

The factors influencing the formation of the high-pressure gas film are many, wherein a bearing clearance is a very critical factor, a clearance between the axial bearing and the acting surface of the thrust plate can not be too large or too small, the high-pressure gas film cannot be formed due to too much clearance, and the bearing and the thrust plate which are too small in clearance are easy to dry grind. The optimum size of the clearance can be obtained through repeated experimental groping and software simulation, the clearance is generally in a micron level, and the axial bearing clearance is generally difficult to achieve the appropriate size in one-time assembly due to the fact that parts of the air compressor must have machining errors and assembly errors, and the requirement can be met after clearance adjustment is generally carried out. However, when the gap of the axial bearing of the existing air compressor is adjusted, the diffuser and the axial bearing are required to be disassembled for reworking and then reinstalled, so that the disassembling and assembling steps are complicated and are not beneficial to maintaining the precision of parts.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems of complex operation and part precision loss when the bearing clearance is adjusted in the prior art, the compressor, the centrifugal compressor, the air compressor, the automobile and the air conditioner are provided, wherein the diffuser, the thrust disc and the main and auxiliary axial bearings are combined into a component so as to avoid repeated assembly and disassembly to ensure the precision of parts.

A compressor comprises a thrust disc assembly and a rotating shaft, wherein the thrust disc assembly is sleeved on the rotating shaft and is in clearance fit with the rotating shaft.

The thrust disc assembly comprises a main shaft, a thrust disc, an auxiliary axial bearing and a diffuser, wherein the thrust disc comprises an axial section and a radial section arranged at the first end of the axial section, the radial section is arranged along the axis direction of the thrust disc, the diffuser is arranged in parallel with the main shaft and the auxiliary axial bearing, and the diffuser is sleeved on the axial section along the main shaft.

The compressor further comprises an adjusting ring, the adjusting ring is sleeved on the outer peripheral side of the radial section, a first end face of the adjusting ring is abutted to the main axial bearing, and a second end face of the adjusting ring is abutted to the auxiliary axial bearing.

A gap is formed between the diffuser and the outer surface of the axial section, and a sealing structure is arranged in the gap.

The seal structure comprises a labyrinth seal structure.

The compressor further comprises an impeller, and the second end of the axial section is abutted to the impeller.

A centrifugal compressor comprises the compressor.

An air compressor machine, includes foretell compressor.

An automobile comprises the compressor or the air compressor.

An air conditioner comprises the compressor or the air compressor.

The compressor, the centrifugal compressor, the air compressor, the automobile and the air conditioner provided by the utility model combine the diffuser, the thrust disc and the main and auxiliary axial bearings to form the thrust disc assembly, then the thrust disc assembly is installed on the rotating shaft, when the axial clearance needs to be adjusted, the thrust disc assembly can be directly detached from the rotating shaft integrally, so that the axial bearing clearance can be adjusted to be within a proper size range before the compressor integral structure is installed, the bearing can provide larger bearing capacity, meanwhile, the thrust disc assembly can perform integral detection and integral assembly, the superposition assembly error is reduced, the repeated assembly and disassembly on the whole compressor is avoided, the precision retentivity of parts is influenced, and the assembly efficiency can be improved.

Drawings

Fig. 1 is a sectional view of a compressor according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a thrust disc assembly of an embodiment provided by the present invention;

in the figure:

1. a main axial bearing; 2. a thrust plate; 3. an auxiliary axial bearing; 4. a diffuser; 5. an adjustment ring; 6. an impeller; 21. an axial section; 22. a radial segment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The compressor shown in fig. 1 and 2 includes a thrust plate assembly and a rotating shaft, wherein the thrust plate assembly is sleeved on the rotating shaft, and the thrust plate assembly is in clearance fit with the rotating shaft. When adjusting the axial clearance between thrust dish and the axial bearing, can directly pull down the thrust dish subassembly by the pivot and adjust to after the adjustment reinstallate to the pivot on can, effectual overcome among the prior art need dismantle diffuser and axial bearing get off to do over again after the reworking install again, the dismouting step is loaded down with trivial details and be unfavorable for the problem of the precision of keeping spare part.

The thrust disc assembly comprises a main axial bearing 1, a thrust disc 2, an auxiliary axial bearing 3 and a diffuser 4, wherein the thrust disc 2 comprises an axial section 21 and a radial section 22 arranged at the first end of the axial section 21, the radial section 22 is arranged along the axis direction of the thrust disc 2, the diffuser 4 is arranged on the main axial bearing 1, the radial section 22 and the auxiliary axial bearing are arranged in parallel, and the diffuser 4 and the main axial bearing 1 are sleeved on the axial section 21. That is, the main axial bearing 1 and the auxiliary axial bearing 3 form an axial force on both sides of the radial section 22, and the adjustment of the compressor is realized through the combined action of the two axial forces.

The compressor further comprises an adjusting ring 5, wherein the adjusting ring 5 is sleeved on the outer peripheral side of the radial section 22, a first end face of the adjusting ring 5 is abutted to the main axial bearing 1, and a second end face of the adjusting ring 5 is abutted to the auxiliary axial bearing 3. Reliable fixing and reliable spacing between the auxiliary axial bearing 3 and the diffuser 4 can be effectively guaranteed through the adjusting ring 5, and therefore the situation that the auxiliary axial bearing 3 is moved under the action of axial force to influence the effect of the thrust disc is avoided.

When the rotating shaft rotates at a high speed, gas with certain viscosity is continuously brought into the gaps, the gas film generates certain pressure due to continuous entering of the gas, and when the gas film force is enough to balance the axial load of the rotating shaft, the thrust disc 2 can keep a stable state in the horizontal direction between the main axial bearing 1 and the auxiliary axial bearing 3. And diffuser 4, main axial bearing 1, supplementary axial bearing 3 and adjusting ring 5 combine thrust disc subassembly and install on the motor barrel as an organic whole, can adjust the axial bearing to the component installation after the appropriate scope, avoid a plurality of parts to carry out the dismouting repeatedly. When the axial clearance needs to be adjusted, the thrust disc component can be directly detached from the rotating shaft, so that the axial bearing clearance can be adjusted to be within a proper size range before the integral structure of the compressor is installed, the bearing can provide larger bearing capacity, meanwhile, the thrust disc component can be integrally detected and integrally assembled, the overlapping assembly error is reduced, repeated assembly and disassembly on the whole compressor is avoided, the precision retentivity of parts is influenced, and the assembly efficiency can be improved.

A gap is formed between the diffuser 4 and the outer surface of the axial section 21, and a sealing structure is arranged in the gap.

The seal structure comprises a labyrinth seal structure.

The compressor further comprises an impeller 6, and the second end of the axial section 21 is arranged in abutment with the impeller 6.

A centrifugal compressor comprises the compressor.

An air compressor machine, includes foretell compressor.

An automobile comprises the compressor or the air compressor.

An air conditioner comprises the compressor or the air compressor.

When the thrust disc component is assembled, the method comprises the following specific steps:

step S1, arranging the main axial bearing 1, the thrust disc 2 and the auxiliary axial bearing 3 on the diffuser 4 in sequence to form a thrust disc assembly; and step S2, sleeving the thrust disc component on the rotating shaft. The diffuser 4, the thrust disc 2 and the main and auxiliary axial bearings 3 are combined to form a thrust disc assembly, then the thrust disc assembly is installed on the rotating shaft, and the whole assembly can be moved by the left and right displacement of the thrust disc 2 to measure the axial clearance of the axial bearings. Whole subassembly is installed on the motor barrel as whole, can adjust axial bearing to and carry out the subassembly installation after the appropriate scope, avoids a plurality of parts to carry out the dismouting repeatedly. When the axial clearance needs to be adjusted, the thrust disc component can be directly detached from the rotating shaft, so that the axial bearing clearance can be adjusted to be within a proper size range before the integral structure of the compressor is installed, the bearing can provide larger bearing capacity, meanwhile, the thrust disc component can be integrally detected and integrally assembled, the overlapping assembly error is reduced, repeated assembly and disassembly on the whole compressor is avoided, the precision retentivity of parts is influenced, and the assembly efficiency can be improved.

Step S1 further includes: the thrust disc 2 is sleeved with the adjusting ring 5, a first end of the adjusting ring 5 is abutted with the main axial bearing 1, and a second end of the adjusting ring 5 is abutted with the auxiliary axial bearing 3. The whole assembly can be moved by the left and right displacement of the thrust disc 2 to measure the axial clearance of the axial bearing, and if clearance adjustment is needed, the adjusting ring 5 is only needed to be disassembled to rework the thickness H.

Step S1 further includes:

fixing the pin on the diffuser 4;

sequentially installing a main axial bearing 1 and an adjusting ring 5 on a pin;

installing a thrust plate 2;

mounting the auxiliary axial bearing 3 on the pin;

and a locking screw penetrates through the auxiliary axial bearing 3, the adjusting ring 5, the main axial bearing 1 and the diffuser 4 in sequence and is locked to form the thrust disc component.

Meanwhile, the auxiliary axial bearing 3, the adjusting ring 5, the main axial bearing 1 and the diffuser 4 are locked and fixed by pins and locking screws, so that the stability of the integral structure of the thrust disc assembly is ensured.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A compressor, characterized by: the anti-thrust disc assembly is sleeved on the rotating shaft and is in clearance fit with the rotating shaft.

2. The compressor of claim 1, wherein: the thrust disc assembly comprises a main shaft, an axial bearing (1), a thrust disc (2), an auxiliary axial bearing (3) and a diffuser (4), wherein the thrust disc (2) comprises an axial section (21) and a radial section (22) arranged at the first end of the axial section (21), the thrust disc (2) is arranged along the axis direction of the thrust disc (2), the diffuser (4) is arranged in the main axial bearing (1), the radial section (22) and the auxiliary axial bearing are arranged in parallel, and the diffuser (4) and the main axial bearing (1) are sleeved on the axial section (21).

3. The compressor of claim 2, wherein: the compressor further comprises an adjusting ring (5), the adjusting ring (5) is sleeved on the outer peripheral side of the radial section (22), a first end face of the adjusting ring (5) is abutted to the main axial bearing (1), and a second end face of the adjusting ring (5) is abutted to the auxiliary axial bearing (3).

4. The compressor of claim 2, wherein: a gap is formed between the diffuser (4) and the outer surface of the axial section (21), and a sealing structure is arranged in the gap.

5. The compressor of claim 4, wherein: the seal structure comprises a labyrinth seal structure.

6. The compressor of claim 2, wherein: the compressor further comprises an impeller (6), and the second end of the axial section (21) is abutted to the impeller (6).

7. A centrifugal compressor, characterized in that: comprising a compressor according to any one of claims 1 to 6.

8. The utility model provides an air compressor machine which characterized in that: comprising a compressor according to any one of claims 1 to 6.

9. An automobile, characterized in that: comprising the compressor of any one of claims 1 to 6 or the air compressor of claim 8.

10. An air conditioner, characterized in that: comprising the compressor of any one of claims 1 to 6 or the air compressor of claim 8.

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