Support structure for scroll compressor

Abstract

The utility model discloses a supporting structure for a scroll compressor, and relates to the technical field of compressors, in particular to the supporting structure for the scroll compressor. An annular oil cup is machined in the middle of a supporting body; the top end face of the supporting body is machined into a supporting mirror face and matched with the bottom face of the vortex assembly. An annular oil collecting groove is formed in an annular area below the supporting mirror surface; a tangential oil drainage groove is formed in the edge side of each supporting leg of the supporting body, one end of each tangential oil drainage groove is connected with the oil collecting groove, and the other end of each tangential oil drainage groove is connected with the inner wall of the compressor shell. According to the technical scheme, the scroll compressor solves the problems that in the operation process of a scroll compressor in the prior art, lubricating oil in the compressor cannot keep efficient backflow, oil mist can be generated, the oil mist is carried into system heat exchange equipment by oil-soluble refrigerants in long-term operation, and the system efficiency is affected; lubricating oil enters the scroll plate, liquid impact may be caused in the meshing compression process of the scroll plate, and the reliability of the compressor cannot be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a support structure for scroll compressor relates to compressor technical field, especially a support structure for scroll compressor. BACKGROUND

[0002] As the core component of refrigeration, heat system, the lubrication state and oil discharge of compressor will determine the operation reliability and efficiency of the system, at present, the compressor exists the situation that the lubricating oil return speed is slow and leads to poor lubrication;And when the compressor is running, the high speed movement of scroll assembly will make the lubricating oil in the oil cup splash, produce oil mist, combine with soluble oil refrigerant when the compressor inhales, the oil-containing refrigerant is sucked into scroll disc and is discharged after compression, increases the scroll disc liquid beating risk and influences the reliability of long-term operation of compressor;Also can lead to the increase of oil content in compressor exhaust, that is, high oil discharge, the lubricating oil carried by refrigerant will enter the refrigeration, heat system cycle, remain in each heat exchange equipment and pipeline, influence the heat exchange efficiency of system.

[0003] In view of the problems existing in the prior art, it is necessary to design a novel support structure for scroll compressor to overcome the problems existing in the prior art. SUMMARY

[0004] According to the scroll compressor provided by the prior art, the internal lubricating oil of the compressor cannot be kept in high-efficiency return, and oil mist is generated, which is carried into the system heat exchange equipment by soluble oil refrigerant in long-term operation, influences the system efficiency;The lubricating oil enters the scroll disc, which may cause liquid beating in the meshing compression process of scroll disc, and the reliability of compressor cannot be guaranteed, and the support structure for scroll compressor is provided;The internal lubricating oil of the compressor is sufficient, the lubrication state between parts is good, the reliability of scroll compressor is improved, the lubricating oil after being soluble with gaseous refrigerant is prevented from entering the scroll disc, the liquid beating risk of compressor scroll disc is reduced, and the lubricating oil remaining in the refrigeration, heat system is reduced, and the system energy efficiency is improved.

[0005] The technical means adopted by the utility model are as follows:

[0006] A support structure for scroll compressor, comprising: a support body arranged in a compressor housing at a certain height and cooperating with a scroll assembly and a crankshaft;The crankshaft is internally provided with an eccentric hole, which is communicated with the bottom oil pool of the compressor and the support structure oil cup arranged in the support body from bottom to top;

[0007] Further, the middle part of the support body is processed with an annular oil cup, which will be filled with and overflow the lubricating oil in the bottom oil pool of the compressor attracted by the centrifugal force generated by the rotation of the crankshaft during the operation of the compressor;

[0008] Further, the top end surface of the support body is machined into a support mirror surface, which cooperates with the bottom surface of the scroll assembly. The lubricating oil overflowing from the oil cup will flow between the cooperating surfaces and provide lubrication.

[0009] Further, an annular oil collecting groove is arranged at the annular area below the support mirror surface, which collects the lubricating oil flowing outward from the support mirror surface.

[0010] Further, a tangential oil discharge groove is arranged on the edge side of each leg of the support body. One end of the tangential oil discharge groove is connected to the oil collecting groove, and the other end is connected to the inner wall of the compressor shell.

[0011] Further, the tangential oil discharge groove is arranged in a direction tangent to the circle of the movement track of the scroll assembly. When the scroll assembly is in operation, the lubricating oil can be accelerated to be discharged by the rotating gas force.

[0012] Further, the groove body of the tangential oil discharge groove has a certain angle θ with the horizontal plane, and the angle θ is greater than 0°. This can make the lubricating oil flow from the oil collecting groove to the inner wall of the shell under the action of gravity.

[0013] Further, the number of tangential oil discharge grooves can be one or more. The groove body can be arranged not only in a direction tangent to the circle of the movement track of the scroll assembly, but also in any direction that can guide the lubricating oil.

[0014] Further, the depth of the groove body of the tangential oil discharge groove (103) is greater than the depth of the oil collecting groove (102). There is a step difference between the two groove bodies, which can guide the flow of lubricating oil.

[0015] Further, the oil collecting groove (102) is annular, intermittent, or any other shape, and has a groove structure with oil collecting function.

[0016] Further, the support mirror surface is also provided with a mirror oil groove.

[0017] Further, the groove body of the mirror oil groove includes an annular oil groove and a set of uniformly distributed radial oil guiding short grooves.

[0018] Further, the tangential oil discharge groove is connected to the mirror oil groove.

[0019] After the compressor is operated, the movement of the crankshaft and the scroll assembly causes the lubricating oil in the upper support oil cup to overflow and flow around the support mirror. The lubricating oil exists in the form of oil droplets or oil mist in the compressor, and the refrigerant contacts part of the oil droplets or oil mist and is sucked into the scroll plate together, and then is discharged from the compressor exhaust port, so that the lubricating oil enters the refrigeration and heat system of each heat exchange equipment or pipeline, so that the lubricating oil in the compressor is continuously reduced, the lubrication of the mechanical parts is affected, and the reliability of the compressor is reduced. Therefore, the improved support structure with the oil collecting and guiding oil discharge functions is arranged in the compressor, the lubricating oil in the oil cup can flow back to the oil pool along the specific collection and guiding oil discharge groove arranged on the support structure under the action of gravity, so that the lubricating oil is prevented from being dissolved with the sucked refrigerant, and the reliability of the compressor and the efficiency of the system can be improved through the above method.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] 1. The support structure for the scroll compressor provided by the utility model reduces the generation of lubricating oil mist and accelerates the oil return rate through the upper support with the oil collecting and guiding oil discharge function structure, and improves the lubricating efficiency and reliability in the compressor.

[0022] 2. The support structure for the scroll compressor provided by the utility model has the characteristics of simple structure, low cost and high productivity, and is more easy to realize mass production and use.

[0023] In summary, the technical scheme of the utility model solves the problems in the prior art that the lubricating oil in the scroll compressor cannot be kept in efficient backflow during operation, oil mist is generated, the soluble oil is carried to the system heat exchange equipment by the refrigerant during long-term operation, the system efficiency is affected, the lubricating oil enters the scroll plate, liquid strike may be caused during the meshing compression process of the scroll plate, and the reliability of the compressor cannot be guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be simply introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 It is a support structure upper end surface structure schematic diagram of the embodiment 1 of the utility model;

[0027] Figure 3This is a schematic diagram of the inclined angle structure of the tangential oil drain groove of this utility model;

[0028] Figure 4 This is a schematic diagram of the upper end face of the support structure in Embodiment 2 of this utility model.

[0029] In the picture:

[0030] 101. Support body; 102. Oil collection groove; 103. Tangential oil drain groove; 104. Oil cup; 105. Support mirror; 106. Mirror oil groove;

[0031] 201. Vortex assembly;

[0032] 301. Crankshaft;

[0033] 401. Compressor housing;

[0034] 501. Oil tank. Detailed Implementation

[0035] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] The foregoing description, for purposes of explanation, sets forth specific values and arrangements of components and steps that are subject to many options. It is their combinations and permutations that are the true measure of the inventive scope. Those skilled in the art will recognize that many of the components and steps described above can be implemented using one or more computer programs and that the described steps can be carried out by a computer executing a program. Such programs can be written in any of a number of suitable programming languages and can be stored in any of a number of suitable, non- transitory storage media, including hard disks, solid state memory, flash memory, magnetic tape, etc. Accordingly, the novelty lies in the novel combinations and permutations of the components and steps described above, and not in the specific forms of these components and steps themselves. Thus, the scope of the invention should be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references referred to herein are expressly incorporated herein by reference.

[0039] In the description of the present application, it needs to be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the protection scope of the present application: the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0040] For the convenience of description, spatial relative terms such as "on", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0041] In addition, it needs to be explained that the use of "first", "second" and the like to limit parts only for the convenience of distinguishing the corresponding parts, and if there is no further statement, the above words have no special meaning, therefore, it cannot be understood as a limitation on the protection scope of the present application.

[0042] Example 1

[0043] As Figures 1-3 shown, the utility model provides a kind of support structure for scroll compressor, comprising: setting in compressor casing 401 certain height, and with the support body 101 matched with scroll assembly 201 and crankshaft 301;Crankshaft 301 inside axial arrangement has eccentric hole, from bottom to top intercommunication compressor bottom oil pool 501 and the support structure oil cup 104 arranged in support body 101 inside;Annular oil cup 104 is processed in the middle of support body 101, when compressor operation, it will be filled and overflow the lubricating oil in compressor bottom oil pool 501 attracted by centrifugal force generated by the rotation of crankshaft 301;The top surface of support body 101 is processed into support mirror surface 105, and the bottom surface of scroll assembly 201 is matched, and the lubricating oil overflowed from oil cup 104 will flow between the matching surfaces and provide lubrication;Annular oil collecting groove 102 is arranged at the annular area below support mirror surface 105, to collect the lubricating oil scattered around support mirror surface 105;Tangential oil drain groove 103 is arranged on each leg edge side of support body 101, one end of tangential oil drain groove 103 is connected with oil collecting groove 102, and the other end is connected with the inner wall of compressor casing 401.

[0044] Tangential oil drain groove 103 is arranged in the direction tangent to the motion track circle of scroll assembly 201, and can accelerate the discharge of lubricating oil by means of rotating gas force when scroll assembly 201 operates.

[0045] The groove body of tangential oil drain groove 103 has a certain angle θ with the horizontal plane, and the angle θ is greater than 0 °, so that the lubricating oil can be guided from oil collecting groove 102 to the inner wall of casing 401 under the action of gravity.

[0046] The number of tangential oil drain groove 103 can be one or more, and the groove direction can be arranged not only in the direction tangent to the motion track circle of scroll assembly 201, but also in any direction having the function of guiding lubricating oil.

[0047] The depth of the groove body of tangential oil drain groove 103 is greater than the depth of oil collecting groove 102, and there is a step difference between the two groove bodies, which can guide the flow of lubricating oil.

[0048] Embodiment 2

[0049] As Figure 4 shown, on the basis of embodiment 1, the utility model further provides a kind of support structure for scroll compressor, mirror surface oil groove 106 is further provided on support mirror surface 105;The groove body of mirror surface oil groove 106 includes annular oil groove and evenly distributed radial oil guide short groove.

[0050] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A support structure for a scroll compressor, comprising: Support body (101) is arranged in a certain height in compressor shell (401), and cooperates with scroll assembly (201) and crankshaft (301); eccentric hole is arranged axially in crankshaft (301), and compressor bottom oil pool (501) and support structure oil cup (104) arranged in support body (101) are communicated from bottom to top; characterized in that: The middle part of the support body (101) is processed with an annular oil cup (104), which will be filled with and overflowed with lubricating oil from the compressor bottom oil pool (501) attracted by the centrifugal force generated by the rotation of the crankshaft (301) during the operation of the compressor; The top surface of the support body (101) is processed into a support mirror surface (105), which cooperates with the bottom surface of the scroll assembly (201), and the lubricating oil overflowing from the oil cup (104) flows between the two cooperating surfaces and provides lubrication; An annular oil collecting groove (102) is arranged at the annular area below the support mirror surface (105) to collect the lubricating oil flowing outward from the support mirror surface (105); A tangential oil discharge groove (103) is arranged on each leg edge of the support body (101), one end of the tangential oil discharge groove (103) is connected with the oil collecting groove (102), and the other end is connected with the inner wall of the compressor shell (401).

2. The support structure for scroll compressor according to claim 1, characterized in that: The tangential oil discharge groove (103) is arranged in a direction tangent to the circle of the movement track of the scroll assembly (201), and the lubricating oil can be accelerated to be discharged by means of the rotating gas force when the scroll assembly (201) operates.

3. The support structure for scroll compressor according to claim 2, characterized in that: The groove body of the tangential oil discharge groove (103) has a certain angle θ with the horizontal plane, and the angle θ is greater than 0°, so that the lubricating oil can be guided from the oil collecting groove (102) to the inner wall of the shell (401) under the action of gravity.

4. The support structure for scroll compressor according to claim 3, characterized in that: The number of the tangential oil discharge groove (103) can be one or more, and the groove body can be arranged not only in a direction tangent to the circle of the movement track of the scroll assembly (201), but also in any direction having the function of guiding the lubricating oil.

5. The support structure for scroll compressor according to claim 1, characterized in that: The depth of the groove body of the tangential oil discharge groove (103) is greater than the depth of the oil collecting groove (102), and there is a step difference between the two groove bodies, which can guide the flow of the lubricating oil.

6. The support structure for scroll compressor according to claim 1, characterized in that: The oil collecting groove (102) is annular, intermittent or any other shape, and has a groove structure with the function of collecting oil.

7. The support structure for scroll compressor according to claim 1, characterized in that: The support mirror surface (105) is further provided with a mirror surface oil groove (106); The groove body of the mirror surface oil groove (106) includes an annular oil groove and a plurality of radially distributed short grooves for guiding oil.

8. The support structure for a scroll compressor according to any one of claims 1 to 5, characterized in that: The tangential oil drain groove (103) is connected to the mirror surface oil groove (106).

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