Compressor

Abstract

The invention provides a compressor which comprises a shell and a pump body assembly, the pump body assembly is installed in the shell and comprises an upper flange, a lower flange and an auxiliary supporting piece, the upper flange is fixedly connected with the shell, and the auxiliary supporting piece is assembled on the lower flange and fixedly connected with the shell. According to the pump body assembly, the upper flange is fixedly connected with the shell, and the auxiliary supporting piece on the lower flange is fixedly connected with the shell to form auxiliary supporting, so that the rigidity of the lower portion of the pump body assembly is effectively improved, bending deformation is reduced, vibration of the pump body and the compressor is reduced, and finally noise of the compressor is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of compressor design, and particularly relates to a compressor. BACKGROUND

[0002] In the technical field of rotor compressor, the pump body and the shell of the compressor are mainly connected through flange or three or six point welding between the cylinder and the shell. Such fixing mode is equivalent to fixing the pump body through only one place, and the support stiffness is relatively weak. With the further increase of the rotating speed of the compressor, the exciting force is further increased, and the pump body is prone to bending vibration deformation due to insufficient support stiffness at the lower part, thereby causing the vibration and noise problems of the compressor. SUMMARY

[0003] Therefore, the present application provides a compressor which can solve the technical problem that the pump body of the compressor is prone to bending vibration deformation due to insufficient support stiffness at the lower part with the further increase of the rotating speed of the compressor, thereby causing the vibration and noise problems of the compressor.

[0004] In order to solve the above problems, the present application provides a compressor comprising a shell and a pump body assembly, the pump body assembly is installed in the shell, the pump body assembly comprises an upper flange, a lower flange and an auxiliary support, the upper flange is fixedly connected with the shell, the auxiliary support is assembled on the lower flange, and the auxiliary support is fixedly connected with the shell.

[0005] In some embodiments, the auxiliary support comprises an end wall, and an outer peripheral edge of the end wall is in abutment with an inner peripheral wall of the shell.

[0006] In some embodiments, the auxiliary support further comprises an annular side wall connected with the outer peripheral edge of the end wall, and the annular side wall is welded with the shell.

[0007] In some embodiments, the thickness of the annular side wall is h1, and 1mm≤h1≤5mm.

[0008] In some embodiments, the auxiliary support further comprises a plurality of segmented side walls connected with the outer peripheral edge of the end wall, each of the segmented side walls is distributed along the circumference of the end wall, and each of the segmented side walls is welded with the shell.

[0009] In some embodiments, the thickness of the segmented side wall is h2, and 1mm≤h2≤5mm.

[0010] In some embodiments, an oil-gas passage is configured on the end wall.

[0011] In some embodiments, the number of the oil-gas passages is multiple, and each of the oil-gas passages is distributed along the circumference of the end wall.

[0012] In some embodiments, a lower muffler is arranged on the lower flange, the auxiliary support and the lower muffler are integrally formed, a first threaded hole is formed on the lower muffler, a second threaded hole is formed on the lower flange, and a bolt is threadedly connected in the first threaded hole and the second threaded hole.

[0013] In some embodiments, a lower muffler is arranged on the lower flange, a first threaded hole is formed on the lower muffler, a second threaded hole is formed on the lower flange, and a third threaded hole is formed on the auxiliary support, and a bolt is threadedly connected in the first threaded hole, the second threaded hole and the third threaded hole.

[0014] The compressor provided by the application has the following beneficial effects: In addition to the upper flange being fixedly connected with the shell, the auxiliary support on the lower flange is also fixedly connected with the shell to form an auxiliary support, thereby effectively improving the lower rigidity of the pump body assembly, reducing bending deformation, reducing vibration of the pump body and the compressor, and finally reducing noise of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0016] Figure 1 FIG. 1 is a structural schematic diagram of a compressor according to Embodiment One of the application; Figure 2 FIG. 2 is a structural schematic diagram of a compressor according to Embodiment Two of the application; Figure 3 FIG. 3 is a sectional view of a pump body assembly of the compressor according to Embodiment One of the application; Figure 4 FIG. 4 is a sectional view of a pump body assembly of the compressor according to Embodiment Two of the application; Figure 5 FIG. 5 is a structural schematic diagram of an auxiliary support and a lower muffler integrally formed in the pump body assembly of the compressor according to Embodiment One of the application; Figure 6 FIG. 6 is a structural schematic diagram of an auxiliary support and a lower muffler separately formed and assembled together in the pump body assembly of the compressor according to Embodiment Two of the application; Figure 7 FIG. 7 is a structural schematic diagram of an auxiliary support and a lower muffler separated in the pump body assembly of the compressor according to Embodiment Two of the application; Figure 8Fig. 2 is a schematic view of the auxiliary support and lower muffler of the compressor of the second embodiment of the present application.

[0017] Reference signs are shown as follows: 1, housing; 2, upper flange; 3, lower flange; 4, auxiliary support; 41, end wall; 42, annular side wall; 43, segmented side wall; 5, oil gas passage; 6, lower muffler; 7, first threaded hole; 8, bolt; 9, third threaded hole; 10, welding hole; 11, crankshaft; 12, upper muffler; 13, upper cylinder; 14, middle partition plate; 15, lower cylinder. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and not intended to limit the present application and its applications or uses in any way. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application.

[0019] In the description of the present application, it should be understood that the orientation words such as “front, back, up, down, left, right”, “transverse, vertical, perpendicular, horizontal” and “top, bottom” and the like indicate the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and 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, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words “inner, outer” refer to the inner and outer of the contour of each component itself.

[0020] For the convenience of description, spatial relative terms such as “above”, “upper”, “on”, “top”, etc. 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 exemplary 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.

[0021] In addition, it should be noted that the use of the terms "first", "second", etc. to define components is merely for the convenience of distinguishing the corresponding components, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0022] Referring to Figures 1 to 8 As shown, according to the embodiment of the present application, a compressor is provided, comprising a shell 1 and a pump body assembly, the pump body assembly is installed in the shell 1, the pump body assembly comprises an upper flange 2, a lower flange 3 and an auxiliary support 4, the upper flange 2 is fixedly connected with the shell 1, the auxiliary support 4 is assembled on the lower flange 3, and the auxiliary support 4 is fixedly connected with the shell 1.

[0023] In this technical solution, in addition to the upper flange 2 being fixedly connected with the shell 1, the auxiliary support 4 on the lower flange 3 is also fixedly connected with the shell 1 to form an auxiliary support, thereby effectively improving the lower rigidity of the pump body assembly, reducing the bending deformation, reducing the vibration of the pump body and the compressor, and ultimately reducing the noise of the compressor. Wherein, the upper flange 2 is connected with the shell 1 by spot welding to form a main support.

[0024] Referring to Figures 1 to 4 As shown, the auxiliary support 4 comprises an end wall 41, and the outer peripheral edge of the end wall 41 abuts against the inner peripheral wall of the shell 1.

[0025] In this embodiment, when the outer peripheral edge of the end wall 41 of the auxiliary support 4 abuts against the inner peripheral wall of the shell 1, the shell 1 forms a support from all around the lower part of the pump body assembly, so that the support effect of the pump body assembly is better.

[0026] Referring to Figure 1 , Figure 5 and Figure 6 As an embodiment, the auxiliary support 4 further comprises an annular side wall 42 connected with the outer peripheral edge of the end wall 41, and the annular side wall 42 is welded with the shell 1.

[0027] In this technical solution, the setting of the annular side wall 42 can enhance the structural strength of the auxiliary support 4, and at the same time make the welding of the auxiliary support 4 with the shell 1 easier. Specifically, a plurality of welding holes 10 are formed on the shell 1, the diameter of the welding hole 10 is 1.5mm-2.0mm, the annular side wall 42 is welded and fixed with the shell 1 by a three-point or six-point distributed spot welding process to form a local rigid constraint. It should be noted that by adjusting the height of the annular side wall 42 and the number of spot welding, the needs of compressors with different speeds can be met.

[0028] As a specific embodiment, the thickness of the annular side wall 42 is h1, 1mm≤h1≤5mm, so as to ensure that the annular side wall 42 has sufficient strength and is not too thick.

[0029] Referring to Figure 8 As another embodiment, the auxiliary support 4 further comprises a plurality of segmented side walls 43 connected to the outer peripheral edge of the end wall 41, the segmented side walls 43 are spaced along the circumference of the end wall 41, and each segmented side wall 43 is welded to the shell 1.

[0030] In this embodiment, the segmented side walls 43 are welded to the shell 1, which can also achieve the fixed connection of the auxiliary support 4 and the shell 1. Compared with the design concept of the annular side wall 42, the design concept of the segmented side wall 43 is easier to operate when installing the auxiliary support 4 in the shell 1, because the segmented side walls 43 have a spacing between adjacent segmented side walls 43, which is more easily deformed under pressure, so it is easier to install the auxiliary support 4 into the shell 1, and the welding of each segmented side wall 43 to the shell 1 also makes the deformation of the auxiliary support 4 smaller, but the segmentation also has the disadvantage of insufficient overall structural strength. In general, the two design concepts have advantages and disadvantages. It should be noted that by adjusting the height of each segmented side wall 43 and the number of spot welds, the needs of compressors of different speeds can be met.

[0031] As a specific embodiment, the thickness of the segmented side wall 43 is h2, 1mm≤h2≤5mm, so as to ensure that the segmented side wall 43 has sufficient strength and is not too thick.

[0032] Referring to Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown in the drawings, the end wall 41 is provided with an oil and gas passage 5.

[0033] In this technical solution, since the outer peripheral edge of the end wall 41 of the auxiliary support 4 abuts against the inner peripheral wall of the shell 1, the end wall 41 forms a partition in the shell 1. By constructing the oil and gas passage 5 on the end wall 41, the lubricating oil and the refrigerant gas can pass through, thereby ensuring the fluid circulation of the lubrication system and the cooling system and the normal exhaust of the compressor.

[0034] Referring to Figures 5 to 8 As shown in the drawings, the number of oil and gas passages 5 is multiple, and each oil and gas passage 5 is spaced along the circumference of the end wall 41, so that the lubricating oil and the refrigerant gas can pass through along the circumference of the end wall 41, and the circulation of the lubricating oil and the refrigerant gas is more smooth. Specifically, each oil and gas passage 5 is designed as a waist-shaped hole with a hole length of 15mm-25mm and a hole width of 5mm-8mm, and the waist-shaped hole has sufficient size to ensure the smooth passage of the lubricating oil and the refrigerant gas.

[0035] With reference to Figure 1 , Figure 3 and Figure 5 , the lower flange 3 is provided with a lower muffler 6, and the auxiliary support 4 and the lower muffler 6 are integrally formed as an embodiment. The lower muffler 6 is configured with a first threaded hole 7, and the lower flange 3 is configured with a second threaded hole (not shown in the figure), and the bolt 8 is threadedly connected in the first threaded hole 7 and the second threaded hole. Among them, the specification of the bolt 8 is M6 or M8.

[0036] In this embodiment, the auxiliary support 4 and the lower muffler 6 are integrally formed so that they become one part, and then they can be installed at one time during the installation process, and the assembly efficiency of the compressor is higher. At the same time, the auxiliary support 4 and the lower muffler 6 are integrally formed, so that there is no connection gap between them, and the overall structural strength is better, and the lower support effect of the pump body assembly is better. Among them, the auxiliary support 4 and the lower muffler 6 are formed into an integrated structure by stamping or bending process. It can be understood that the bolt 8 is threadedly connected in the first threaded hole 7 and the second threaded hole, which can realize the fixation of the auxiliary support 4 and the lower muffler 6 on the lower flange 3. Specifically, the number of first threaded holes 7 is multiple, each first threaded hole 7 is distributed along the circumference of the lower muffler 6, the number of second threaded holes is multiple, each second threaded hole is distributed along the circumference of the lower flange 3, the number of bolts 8 is multiple, each bolt 8 is threadedly connected in each first threaded hole 7 and each second threaded hole, which can make the integrated auxiliary support 4 and the lower muffler 6 more firmly fixed on the lower flange 3.

[0037] With reference to Figure 2 , Figure 4 , Figures 6 to 8 , as another embodiment, the auxiliary support 4 and the lower muffler 6 are separately formed, the auxiliary support 4 can be punched from a hot-rolled steel plate with a thickness of 1mm-5mm, the lower muffler 6 is configured with a first threaded hole 7, the lower flange 3 is configured with a second threaded hole, the auxiliary support 4 is configured with a third threaded hole 9, and the bolt 8 is threadedly connected in the first threaded hole 7, the second threaded hole and the third threaded hole 9.

[0038] In the technical solution, the bolt 8 is threadedly connected in the first threaded hole 7, the second threaded hole and the third threaded hole 9, so that one bolt 8 can fix the auxiliary support 4 and the lower muffler 6 which are separately formed on the lower flange 3. Compared with the technical concept of integrally forming the auxiliary support 4 and the lower muffler 6, the auxiliary support 4 and the lower muffler 6 are separately formed, so that when one of the parts is damaged, only the damaged part needs to be replaced, and both of them do not need to be replaced. However, the two parts need to be assembled into the shell 1 in an additional assembly step, and the assembly efficiency of the compressor is relatively low. Therefore, the two technical concepts have advantages and disadvantages. Specifically, the number of the first threaded holes 7 is multiple, the first threaded holes 7 are distributed at intervals along the circumference of the lower muffler 6, the number of the second threaded holes is multiple, the second threaded holes are distributed at intervals along the circumference of the lower flange 3, the number of the third threaded holes 9 is multiple, the third threaded holes 9 are distributed at intervals along the circumference of the auxiliary support 4, and the number of the bolts 8 is multiple. Each bolt 8 is threadedly connected in each first threaded hole 7, each second threaded hole and each third threaded hole 9, so that the separately formed auxiliary support 4 and lower muffler 6 can be fixed more firmly on the lower flange 3.

[0039] For reference Figure 3 and Figure 4 As shown in Figs. 1 to 3, the pump body assembly further comprises a crankshaft 11, an upper muffler 12, an upper cylinder 13, a middle partition plate 14 and a lower cylinder 15. The upper flange 2, the upper cylinder 13, the middle partition plate 14, the lower cylinder 15 and the lower flange 3 are sequentially stacked together, the crankshaft 11 passes through the middle part, and the upper muffler 12 is fixed on the upper cylinder 13. It should be noted that the technical concept of supporting the upper part and the lower part of the pump body assembly in the present application can be applied to single-cylinder, double-cylinder, multi-cylinder and other compressors. When the compressor does not have the lower muffler 6, only the auxiliary support 4 is fixed on the lower flange 3.

[0040] It is easy for those skilled in the art to understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0041] The above is only the preferred embodiment of the present application, and should not be used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred embodiment of the present application, and should not be used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A compressor characterized by, The application relates to a pump body assembly and a shell, wherein the pump body assembly is installed in the shell (1), and the pump body assembly comprises an upper flange (2), a lower flange (3) and an auxiliary support (4), the upper flange (2) is fixedly connected with the shell (1), the auxiliary support (4) is assembled on the lower flange (3), and the auxiliary support (4) is fixedly connected with the shell (1).

2. The compressor of claim 1, wherein, The auxiliary support (4) comprises an end wall (41), and the outer peripheral edge of the end wall (41) is in abutment with the inner peripheral wall of the shell (1).

3. The compressor of claim 2, wherein, The auxiliary support (4) further comprises an annular side wall (42) connected with the outer peripheral edge of the end wall (41), and the annular side wall (42) is welded with the shell (1).

4. The compressor of claim 3, wherein, The thickness of the annular side wall (42) is h1, and 1mm<=h1<=5mm.

5. The compressor of claim 2, wherein, The auxiliary support (4) further comprises a plurality of segmented side walls (43) connected with the outer peripheral edge of the end wall (41), and each segmented side wall (43) is distributed along the circumference of the end wall (41), and each segmented side wall (43) is welded with the shell (1).

6. The compressor of claim 5, wherein, The thickness of the segmented side wall (43) is h2, and 1mm<=h2<=5mm.

7. The compressor of claim 2, wherein, An oil-gas passage (5) is arranged on the end wall (41).

8. The compressor of claim 7, wherein, The number of the oil-gas passages (5) is multiple, and each oil-gas passage (5) is distributed along the circumference of the end wall (41).

9. The compressor of any one of claims 1 to 8, wherein, A lower muffler (6) is arranged on the lower flange (3), the auxiliary support (4) and the lower muffler (6) are integrally formed, a first threaded hole (7) is arranged on the lower muffler (6), a second threaded hole is arranged on the lower flange (3), and a bolt (8) is threadedly connected in the first threaded hole (7) and the second threaded hole.

10. The compressor of any one of claims 1 to 8, wherein, A lower muffler (6) is arranged on the lower flange (3), a first threaded hole (7) is arranged on the lower muffler (6), a second threaded hole is arranged on the lower flange (3), a third threaded hole (9) is arranged on the auxiliary support (4), and a bolt (8) is threadedly connected in the first threaded hole (7), the second threaded hole and the third threaded hole (9).

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