Fixing gasket for fixed scroll floating compressor

Abstract

The utility model discloses a fixing gasket for a fixed vortex floating compressor, and relates to the technical field of compressors, in particular to the fixing gasket for the fixed vortex floating compressor. The utility model has an integral structure, and the main body is an annular gasket; the annular gasket is fixed to the upper end of the floating pin through a bolt and used for preventing deflection when the position of the floating pin is fixed. The annular gasket is of an annular structure which is the same as or similar to a fixed vortex edge (63) in size; an aligning hole and a floating pin bolt hole are formed in the annular gasket; the floating pin is tightened on the main supporting structure by the bolt across the annular gasket, so that the fixed vortex can axially float within the limited range of the floating pin. According to the technical scheme, the problems that in a compressor with a fixed scroll axial floating structure composed of a bolt and a floating pin structure in the prior art, the fixed scroll and the pin often interfere with each other, so that the fixed scroll cannot smoothly float, and the energy efficiency of the compressor is reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model discloses a fixed gasket for fixed scroll floating compressor relates to compressor technical field, and especially relates to a fixed gasket for fixed scroll floating compressor. BACKGROUND

[0002] Scroll compressor is the volumetric compressor that 20th century 70's developed, has high efficiency, low noise and simple structure and the characteristics such as stable operation, is widely used with each air conditioning unit.

[0003] Scroll compressor is mainly by dynamic, fixed scroll, crankshaft, motor and shell structure composition, wherein dynamic, fixed scroll has the scroll tooth of 180's difference, fixed scroll is usually fixed on main support structure, and dynamic scroll is engaged with it, through cross ring structure lets dynamic scroll only can carry out translation under the action of crankshaft and cannot rotate, thereby forming the crescent-shaped pressure cavity of different size, to carry out compressed gas.

[0004] In this process, gas can leak from the tooth side (radial direction) of scroll, and the tooth top (axial direction) of scroll, and the axial floating direction of fixed scroll is designed to solve the axial leakage of tooth top, but due to the assembly problem, the fixed scroll axial floating structure compressor composed of bolt and floating pin structure often causes interference between fixed scroll and pin, so that the fixed scroll cannot float smoothly, resulting in the reduction of compressor efficiency.

[0005] In view of the problems existing in the prior art, it is necessary to design a new type of fixed gasket for fixed scroll floating compressor to overcome the problems existing in the prior art. SUMMARY

[0006] According to the technical problem that the fixed scroll axial floating structure compressor composed of bolt and floating pin structure often causes interference between fixed scroll and pin, so that the fixed scroll cannot float smoothly, resulting in the reduction of compressor efficiency in the prior art, a fixed gasket for fixed scroll floating compressor is provided. The positioning mode of the fixed scroll of the utility model is that an integral annular gasket for preventing displacement of the floating pin when tightening is arranged between the bolt and the floating pin bolt hole. The newly added integral annular gasket will not rotate with the bolt during installation, so that the pin will not rotate with the gasket during assembly of the fixed scroll, thereby avoiding interference with the scroll hole, and reducing the poor performance of the compressor caused by the assembly problem.

[0007] The technical means adopted by the utility model are as follows:

[0008] The fixed gasket for fixed scroll floating compressor is of an integral structure, and the main body is an annular gasket.

[0009] Further, the annular washer is mounted on the upper end of the floating pin by bolts and connected with the fixed scroll, for preventing the floating pin from being deflected when fixed;

[0010] Further, the annular washer is an annular structure with the same size as the edge of the fixed scroll;

[0011] Further, the annular washer is provided with a centering hole and a floating pin bolt hole;

[0012] Further, the floating pin is fastened to the main support structure through the annular washer, so that the fixed scroll can axially float within the limited range of the floating pin.

[0013] Further, the annular washer is provided with four floating pin bolt holes symmetrically arranged in pairs and matched with the bolts for fixing the floating pin;

[0014] Further, the floating pin bolt hole has a diameter larger than the outer diameter of the bolt thread and smaller than the outer diameter of the floating pin.

[0015] Further, the annular washer is provided with two centering holes symmetrically arranged and having a diameter larger than the outer diameter of the head of the centering bolt;

[0016] Further, the centering hole is matched with the fixed scroll centering hole of the fixed scroll through the centering bolt, for centering and positioning the fixed scroll.

[0017] Further, the annular washer is made of a material with certain hardness;

[0018] Further, the surface of the annular washer in contact with the floating pin is smoothly machined and has a certain roughness requirement, so as to prevent the interference between the poor perpendicularity of the pin and the floating pin bolt hole caused by the uneven surface when the bolt is tightened.

[0019] Further, the top end of the floating pin after assembly is higher than the upper surface of the moving scroll by 0.3-0.4mm, leaving a distance for the axial floating of the fixed scroll, and a certain distance is left between the annular washer and the fixed scroll, so that the annular washer does not interfere with the fixed scroll after assembly, and the bolts for fixing the annular washer are diagonally tightened.

[0020] Further, the floating pin and the floating pin bolt hole of the fixed scroll are in clearance fit, and the lower end surface of the floating pin is flush with the upper support surface of the main support structure, so that the floating pin cannot be skewed when fixed.

[0021] Further, the floating pin is machined with a perpendicularity requirement and is made of alloy steel.

[0022] Compared with the prior art, the annular washer has the following advantages:

[0023] The fixed gasket for the fixed scroll floating compressor has an overall annular gasket arranged between the bolt and the floating pin bolt hole, which prevents displacement of the floating pin when being tightened, and the newly-added overall annular gasket cannot rotate with the bolt during installation, so that the floating pin cannot rotate with the gasket during assembly of the fixed scroll, thereby avoiding interference between the fixed scroll and the scroll hole and reducing the problem of poor compressor performance caused by assembly.

[0024] In conclusion, the technical scheme of the utility model solves the problem of interference between the fixed scroll and the pin in the prior art fixed scroll axial floating structure compressor composed of a bolt and a floating pin structure, thereby causing the fixed scroll to fail to float smoothly and reducing the efficiency of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0025] 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 embodiments or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0026] Figure 1 It is a structural schematic diagram of the utility model;

[0027] Figure 2 It is a scroll assembly state overhead sectional view of the annular gasket of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the annular gasket of the utility model.

[0029] In the drawing: 1, compressor shell; 2, high-low pressure partition plate; 3, sealing ring; 4, cross ring; 5, crankshaft; 6, fixed scroll; 61, fixed scroll aligning hole; 62, floating pin hole; 63, fixed scroll edge; 7, moving scroll; 8, fixed bolt; 9, annular gasket; 91, aligning hole; 92, floating pin bolt hole; 10, floating pin; 11, main support structure; 12, motor; 13, auxiliary support structure. DETAILED DESCRIPTION

[0030] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the utility model. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or their combination.

[0033] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in the various embodiments described herein are not meant to limit the scope of the present utility model. At the same time, it should be clear that the size of each part shown in the drawings is not drawn in proportion for the sake of description. The technology, method and equipment known to those skilled in the relevant art may not be discussed in detail, but under appropriate circumstances, the technology, method and equipment should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] In the description of the utility model, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the utility model: the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0035] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0037] like Figure 1 As shown, this utility model provides a fixed gasket for a fixed scroll floating compressor; the compressor includes a compressor housing 1, a main support structure 11 and a secondary support structure 13 providing support, wherein the main support structure 11 and the secondary support structure 13 are welded to the compressor housing 1 by welding, and the two need to ensure a certain degree of coaxiality and perpendicularity to ensure that the crankshaft 5 can rotate smoothly without jamming; the crankshaft 5 passes through the copper sleeve at the center of the main support structure 11 and the copper sleeve at the center of the secondary support structure 13. The motor 12 is assembled to the compressor housing 1 by a heat-fit interference fit.

[0038] like Figure 1 As shown, the main support structure 11 has a scroll assembly consisting of a fixed scroll 6, a moving scroll 7, a cross ring 4, bolts 8, washers 9, and floating pins 10. The bottom surface of the moving scroll 7 is in mirror contact with the main support structure 11. The crankshaft 5 engages with the copper sleeve of the moving scroll 7, providing torque to the moving scroll 7. The keyway of the moving scroll 7, through key engagement with the cross ring 4, prevents the moving scroll 7 from rotating, allowing it to slide. This allows it to mesh with the fixed scroll 6 to create crescent-shaped cavities for gas compression.

[0039] like Figure 1 , 2As shown, first, the two centering bolts are used to position the fixed scroll 6 on the main support structure 11 through the fixed scroll centering hole 61 of the fixed scroll 6, the moving scroll 6 is operated using the centering device, and when the balanced position is reached, the centering bolts are tightened to fix the position of the fixed scroll 6. At this time, the floating pin 10 is inserted into the floating pin hole 62 of the edge of the fixed scroll 6, and the annular gasket 9 is integrally threaded through the centering bolt and placed on the fixed scroll edge 63, and the floating pin 10 is tightened through the annular gasket 9 using the bolt 8. Diagonal tightening is required because the annular gasket 9 is an integral whole, so it will not rotate with the bolt 8 when tightened, which can ensure that the position of the floating pin 10 does not interfere with the floating pin hole 62 of the fixed scroll 6, so that the fixed scroll 6 can axially float.

[0040] As Figure 1 shown, after the installation of the fixed scroll 6 is completed, the centering bolts tightened during centering are removed, and it is checked whether the fixed scroll 6 can smoothly slide in the axial direction. If it can smoothly float in the axial direction, the high-low pressure partition plate 2 and the sealing ring 3 are installed to separate the high-low pressure cavities, and the assembly of the compressor shell 1 is completed.

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; 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 for 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 fixed gasket for a fixed orbit floating scroll compressor, characterized in that: the fixed gasket for the fixed orbit floating scroll compressor is of an integral structure, and the main body thereof is a ring-shaped gasket (9); the ring-shaped gasket (9) is fixed to the upper end of a floating pin (10) through a bolt (8) to prevent the floating pin (10) from being deflected when being fixed; the ring-shaped gasket (9) is of a ring-shaped structure with the same or similar size as the edge of a fixed scroll (6); the ring-shaped gasket (9) is provided with a centering hole (91) and a floating pin bolt hole (92); and the bolt (8) fastens the floating pin (10) to a main support structure (11) through the ring-shaped gasket (9), so that the fixed scroll (6) can axially float within the limited range of the floating pin (10).

2. The fixed gasket for the fixed orbit floating scroll compressor according to claim 1, characterized in that: the ring-shaped gasket (9) is provided with four floating pin bolt holes (92) symmetrically arranged in pairs and matched with the bolt (8) of the fixed floating pin (10); and the hole diameter of the floating pin bolt hole (92) is larger than the external diameter of the thread of the bolt (8) and smaller than the external diameter of the floating pin (10).

3. The fixed gasket for the fixed orbit floating scroll compressor according to claim 1, characterized in that: the ring-shaped gasket (9) is provided with two centering holes (91) symmetrically arranged, and the diameter of the centering hole (91) is larger than the external diameter of the head of a centering bolt; and the centering hole (91) is matched with a centering hole (61) of the fixed scroll (6) through the centering bolt to center and position the fixed scroll (6).

4. The fixed gasket for the fixed orbit floating scroll compressor according to claim 1, characterized in that: the ring-shaped gasket (9) is made of a material with a certain hardness; and the surface of the ring-shaped gasket (9) in contact with the floating pin (10) is smoothly machined and has a roughness requirement to prevent the floating pin from being interfered with the floating pin bolt hole due to the poor perpendicularity caused by the uneven surface when the bolt is tightened.

5. The fixed gasket for the fixed orbit floating scroll compressor according to claim 1, characterized in that: the top end of the floating pin (10) after assembly is 0.3-0.4 mm higher than the upper surface of the fixed scroll (6) to leave a distance for the axial floating of the fixed scroll (6), and a distance is also left between the ring-shaped gasket (9) and the fixed scroll (6) to prevent the ring-shaped gasket (9) from interfering with the fixed scroll (6) after assembly, and the bolts (8) are diagonally tightened when the ring-shaped gasket (9) is fixed.

6. The fixed gasket for the fixed orbit floating scroll compressor according to claim 1, characterized in that: the floating pin bolt hole of the floating pin (10) and the fixed scroll (6) is of a clearance fit, the lower end surface of the floating pin (10) is flush with the upper support surface of the main support structure (11), and the fixed floating pin (10) cannot be skewed when being fixed.

7. The fixed gasket for the fixed orbit floating scroll compressor according to claim 1, characterized in that: the floating pin (10) is machined with a perpendicularity requirement and is made of alloy steel. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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