Frame for reciprocating compressor and reciprocating compressor

Abstract

The application discloses a frame for a reciprocating compressor and a reciprocating compressor, the frame for the reciprocating compressor comprises a bearing support and a bearing, the bearing support comprises a central body part, a first extended plate part and a second extended plate part, the central body part is provided with a counterbore, a bottom wall of the counterbore is provided with a mounting through hole, a free end of the first extended plate part is provided with a first supporting leg which is integrally extended downward, a free end of the second extended plate part is provided with a second supporting leg which is integrally extended downward, a first longitudinal edge of the first extended plate part is provided with a first cylinder supporting flat plate part, the first cylinder supporting flat plate part is provided with a first cylinder connecting through hole; a second longitudinal edge of the first extended plate part is provided with a second cylinder supporting flat plate part, the second cylinder supporting flat plate part is provided with a second cylinder connecting through hole; the bearing comprises a pipe body, the pipe body is fitted in the mounting through hole. The frame for the reciprocating compressor has high production efficiency, and the bearing and the support do not have to be welded, and the frame has good versatility.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a frame for a reciprocating compressor and a reciprocating compressor having the frame. Background Technology

[0002] In related technologies, the crankcase of a reciprocating compressor is typically made of cast iron, with the cylinder cast as a single piece. The casting process for cast iron is complex, heavy, and highly polluting, and prone to defects such as porosity and sand holes. Furthermore, due to the complex and irregular structure of the raw crankcase casting, machining the cylinder and shaft holes is a complex and precision-required process, resulting in a long cycle from raw casting to finished product, low yield, and high cost. The shape and dimensions of the crankcase often differ for different compressor models, leading to poor parts versatility. To address this, a split crankcase design has been proposed, where the cylinder and frame are manufactured separately. The frame is typically made of aluminum alloy casting, but due to its complex structure, casting occupies a large volume, resulting in low production efficiency. Another approach is frame stamping, but stamped frames cannot support the cylinder and motor and must be welded to bearings, resulting in poor versatility. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a low-cost, versatile frame for reciprocating compressors.

[0005] Embodiments of the present invention also provide a reciprocating compressor having the above-described frame.

[0006] According to an embodiment of the first aspect of the present invention, a frame for a reciprocating compressor includes: a bearing bracket and a bearing. The bearing bracket includes a central body portion, a first extension plate portion, and a second extension plate portion. The first extension plate portion extends integrally from the central body portion longitudinally outward, and the second extension plate portion extends integrally from the central body portion longitudinally outward. The extension direction of the first extension plate portion is opposite to the extension direction of the second extension plate portion. The central body portion has a countersunk hole, and the bottom wall of the countersunk hole has a mounting through hole. The free end of the first extension plate portion has a downwardly extending first leg. The first leg has a first recess, and the bottom wall of the first recess has a first motor connection through hole. The second extension plate portion extends integrally from the central body portion. The free end of the extension plate is provided with a second leg extending downward integrally. The second leg is provided with a second recess. The bottom wall of the second recess is provided with a second motor connection through hole. The first longitudinal side of the first extension plate is provided with a first cylinder support plate. The second longitudinal side of the first extension plate is provided with a second cylinder support plate. The first cylinder support plate is provided with a first cylinder connection through hole. The second cylinder support plate is provided with a second cylinder connection through hole. The bearing includes a tube body. The tube body has a shaft hole extending axially along the tube body. One end of the tube body is provided with limiting lugs distributed circumferentially along the tube body. The tube body fits into the mounting through hole. The limiting lugs abut against the bottom wall of the recess.

[0007] The frame for a reciprocating compressor according to an embodiment of the present invention can be integrally formed from sheet metal, which has good environmental performance, fewer subsequent processing steps, high precision, low cost, and high production efficiency. Furthermore, the bearings and brackets do not necessarily need to be welded, and the frame has a structure for supporting the cylinder and motor, thus having good versatility.

[0008] In some embodiments, the outer peripheral wall of the first settling tank is open to the outside.

[0009] In some embodiments, the bearing bracket further includes a first reinforcing rib and a second reinforcing rib. The first reinforcing rib extends along the edge of the first cylinder support plate portion, the edge of the central body portion, and the first longitudinal edge of the second extension plate portion. The second reinforcing rib extends along the edge of the second cylinder support plate portion, the edge of the central body portion, and the second longitudinal edge of the second extension plate portion.

[0010] In some embodiments, the cross-sections of the first extension plate portion and the second extension plate portion are both downwardly convex arc shapes.

[0011] In some embodiments, the bottom wall of the countersunk hole is provided with reinforcing limiting bosses distributed at intervals around the mounting hole along the circumference of the mounting hole, and the limiting lugs abut against the reinforcing limiting bosses.

[0012] In some embodiments, one end of the tube is provided with a flange, and the limiting lug is formed on the outer peripheral surface of the flange.

[0013] In some embodiments, the bearing is interference-fitted within the mounting through hole.

[0014] In some embodiments, the limiting lug is riveted to the reinforcing limiting boss.

[0015] In some embodiments, the support bracket is integrally formed by sheet metal stamping, and the bearing is integrally formed by aluminum alloy forging.

[0016] The reciprocating compressor according to an embodiment of the second aspect of the present invention may include the frame for a reciprocating compressor as described in any of the above embodiments. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the frame of a reciprocating compressor according to an embodiment of the present invention.

[0018] Figure 2 This is a bottom view of the frame of a reciprocating compressor according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the bearing support of the frame of a reciprocating compressor according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the bearings of the frame of a reciprocating compressor according to an embodiment of the present invention.

[0021] Figure label:

[0022] Bearing bracket 1000, central body 1100, countersunk hole 1110, bottom wall of countersunk hole 1111, mounting through hole 1112, reinforcing limiting boss 1113, first extension plate 1200, first support leg 1210, first recess 1211, bottom wall of first recess 12111, first motor connection through hole 12112, first cylinder support plate 1220, first cylinder connection through hole 1221, second cylinder support plate 1220, first cylinder support plate 1221, second cylinder support plate 1220, first cylinder support plate 1221, second cylinder support plate 1220, first cylinder support plate 1221, first ... Support plate 1230, second cylinder connecting through hole 1231, second extension plate 1300, second support leg 1310, second sink 1311, bottom wall of second sink 13111, second motor connecting through hole 13112, first reinforcing rib 1400, second reinforcing rib 1500, bearing 2000, tube body 2100, shaft hole 2110, limiting lug 2120, flange 2130, frame 3000. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] The frame for a reciprocating compressor according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0025] like Figure 1-4 As shown, the frame 3000 for a reciprocating compressor according to an embodiment of the present invention includes a bearing support 1000 and a bearing 2000.

[0026] The bearing support 1000 includes a central body portion 1100, a first extension plate portion 1200, and a second extension plate portion 1300. The first extension plate portion 1200 extends integrally from the central body portion 1100 longitudinally outward. The second extension plate portion 1300 extends integrally from the central body portion 1100 longitudinally outward. The extension direction of the first extension plate portion 1200 is opposite to the extension direction of the second extension plate portion 1300. In other words, as... Figures 1-2 As shown, the first extension plate portion 1200 is integral with the central body portion 1100 and extends to the left from the central body portion 1100, and the second extension plate portion 1300 is integral with the central body portion 1100 and extends to the right from the central body portion 1100. The central body portion 1100 is generally cylindrical, and the cross-sections of the first extension plate portion 1200 and the second extension plate portion 1300 are downwardly projecting arc shapes, so that the bearing bracket 1000 is generally boat-shaped with open ends.

[0027] The central body 1100 is provided with a countersunk hole 1110, and the bottom wall 1111 of the countersunk hole is provided with a mounting through hole 1112 for mounting the bearing 2000.

[0028] The free end of the first extension plate 1200 ( Figure 1 The right end of the first groove has a first leg 1210 extending downwards integrally. The first leg 1210 contains a first recess 1211, and the bottom wall 12111 of the first recess has a first motor connection through hole 12112 for connecting a motor. The bottom wall surface of the first recess ( Figure 1 The upper surface of the bottom wall 12111 of the first settling tank shown constitutes a support plane for contact with the motor.

[0029] Similarly, the free end of the second extension plate 1300 ( Figure 1 The left end of the middle section is provided with a second leg 1310 extending downward integrally. A second recess 1311 is provided inside the second leg 1310. A second motor connection through hole 13112 is provided on the bottom wall 13111 of the second recess for connecting a motor. The bottom wall surface of the second recess ( Figure 1 The upper surface of the bottom wall 13111 of the second settling tank shown constitutes a support plane for contact with the motor.

[0030] The first longitudinal edge of the first extension plate 1200 ( Figure 2 The upper part of the first cylinder support plate 1220 and the second longitudinal side of the first extension plate 1200 are provided. Figure 2 The lower part of the first cylinder support plate 1220 is provided with a first cylinder connection through hole 1221, and the upper surface of the first cylinder support plate 1220 forms a cylinder support surface. The second cylinder support plate 1230 is provided with a second cylinder connection through hole 1231, and the upper surface of the second cylinder support plate 1230 forms a cylinder support surface.

[0031] The bearing 2000 includes a tube body 2100 with an axially extending shaft hole 2110, within which the crankshaft of the compressor is rotatably fitted. One end of the tube body 2100 is provided with circumferentially spaced limiting lugs. The tube body 2100 fits within a mounting through hole 1112, and the limiting lugs abut against the bottom wall 1111 of the countersunk hole. Specifically, the limiting lugs abut against... Figure 1 On the upper surface of the bottom wall 1111 of the countersunk hole shown. The other end of the tube body 2100 extends downward into the mounting through hole 1112.

[0032] According to an embodiment of the present invention, the frame 3000 for a reciprocating compressor and the bearing bracket 1000 can be integrally formed from sheet metal. Compared with casting, this method has better environmental performance, fewer subsequent processing steps, higher precision, lower cost, and higher production efficiency. The bearing 2000 and the bracket do not necessarily need to be welded. At the same time, the bearing bracket 1000 has a structure for supporting and connecting the cylinder and the motor, which is compact and versatile.

[0033] In some embodiments, such as Figure 3 As shown, the outer peripheral wall of the first settling tank 1211 is open outward, that is, the right side of the first settling tank 1211 is open, to form a clearance space to facilitate the installation of the cylinder and the motor. It should be understood that, as... Figure 3 As shown, the second settling tank 1311 is a circumferentially closed tank.

[0034] In some embodiments, the bearing bracket 1000 further includes a first reinforcing rib 1400 and a second reinforcing rib 1500. The first reinforcing rib 1400 extends along the edge of the first cylinder support plate portion 1220, the edge of the central body portion 1100, and the first longitudinal edge of the second extension plate portion 1300. The second reinforcing rib 1500 extends along the edge of the second cylinder support plate portion 1230, the edge of the central body portion 1100, and the second longitudinal edge of the second extension plate portion 1300. The first reinforcing rib 1400 is integrally formed with the first cylinder support plate portion 1220, the central body portion 1100, and the second extension plate portion 1300, and the second reinforcing rib 1500 is integrally formed with the second cylinder support plate portion 1230, the central body portion 1100, and the second extension plate portion 1300. By providing the first reinforcing rib 1400 and the second reinforcing rib 1500, the strength of the bearing bracket 1000 can be increased.

[0035] In some embodiments, the cross-sections of the first extension plate portion 1200 and the second extension plate portion 1300 are both downwardly convex arc-shaped. The first cylinder support plate portion 1220 extends from the first longitudinal edge of the first extension plate portion 1200 in a horizontal plane away from the first extension plate portion 1200, and the second cylinder support plate portion 1230 extends from the second longitudinal edge of the first extension plate portion 1200 in a horizontal plane away from the first extension plate portion 1200.

[0036] like Figure 3 and Figure 4 As shown, in some embodiments, the bottom wall 1111 of the countersunk hole (specifically, as shown) Figure 3 and Figure 4 As shown, the upper surface of the bottom wall 1111 of the countersunk hole is provided with reinforcing limiting bosses 1113 spaced apart around the mounting hole in the circumferential direction, and the limiting lugs abut against the reinforcing limiting bosses 1113. Preferably, one end of the tube body 2100 is provided with a flange 2130, and the limiting lugs are formed on the outer circumferential surface of the flange 2130. In embodiments of the present invention, by providing reinforcing limiting bosses 1113 on the bottom wall 1111 of the countersunk hole, the strength of the central body 1100 can be increased, and it can be used as a stop bearing 2000 for axial limiting when assembling the bearing 2000. Figure 3 and Figure 4 In the embodiment shown, the bottom wall 1111 of the countersunk hole is provided with three reinforcing limiting bosses 1113 evenly distributed in the circumferential direction, and correspondingly, the flange 2130 of the bearing 2000 is provided with three limiting lugs evenly distributed in the circumferential direction.

[0037] In some embodiments, the bearing 2000 is interference-fitted within the mounting through hole 1112. Preferably, the limiting lug is riveted to the reinforcing limiting boss 1113. Thus, through interference fit and riveting, the bearing 2000 can be securely mounted on the bearing bracket 1000 without welding, further simplifying the process.

[0038] In some embodiments, the support bracket is integrally formed by sheet metal stamping, and the bearing 2000 is integrally formed by aluminum alloy forging. Therefore, compared with the casting process in the prior art, the frame 3000 forming process according to embodiments of the present invention is more efficient and environmentally friendly, the blank dimensional accuracy is easier to guarantee, fewer subsequent processing steps are required, process costs are reduced, production efficiency is improved, and material costs are greatly reduced while ensuring rigidity and wear resistance, thus reducing weight.

[0039] The reciprocating compressor according to an embodiment of the present invention may include the frame 3000 for the reciprocating compressor described in the above embodiment.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A frame for a reciprocating compressor, characterized by, The bearing support comprises a center body, a first extension plate and a second extension plate, the first extension plate integrally extends outward from the center body along a longitudinal direction, the second extension plate integrally extends outward from the center body along the longitudinal direction, the extending direction of the first extension plate is opposite to that of the second extension plate, the center body is provided with a counterbore, a bottom wall of the counterbore is provided with a mounting through hole, a free end of the first extension plate is provided with a first leg integrally extending downward, the first leg is internally provided with a first sink, a bottom wall of the first sink is provided with a first motor connecting through hole, a free end of the second extension plate is provided with a second leg integrally extending downward, the second leg is internally provided with a second sink, a bottom wall of the second sink is provided with a second motor connecting through hole, a first longitudinal edge of the first extension plate is provided with a first cylinder support flat plate, a second longitudinal edge of the first extension plate is provided with a second cylinder support flat plate, the first cylinder support flat plate is provided with a first cylinder connecting through hole, the second cylinder support flat plate is provided with a second cylinder connecting through hole. The bearing comprises a tube body having an axial hole extending along the tube body, one end of the tube body is provided with limit lugs spaced along the circumferential direction of the tube body, the tube body is fitted in the mounting through hole, and the limit lugs abut against the bottom wall of the counterbore. The outer peripheral wall of the first sink is open outward. The bottom wall of the counterbore is provided with reinforcing limit bosses spaced around the mounting through hole along the circumferential direction of the mounting through hole, and the limit lugs abut against the reinforcing limit bosses. The bearing is interference-fitted in the mounting through hole. The limit lugs are riveted with the reinforcing limit bosses. The bearing support further comprises a first reinforcing rib and a second reinforcing rib, the first reinforcing rib extends along the edge of the first cylinder support flat plate, the edge of the center body and the first longitudinal edge of the second extension plate, and the second reinforcing rib extends along the edge of the second cylinder support flat plate, the edge of the center body and the second longitudinal edge of the second extension plate.

2. The frame for a reciprocating compressor of claim 1, wherein, The cross sections of the first extension plate and the second extension plate are both arc-shaped and protrude downward.

3. The frame for a reciprocating compressor of claim 1, wherein One end of the tube body is provided with a flange, and the limit lugs are formed on the outer peripheral surface of the flange.

4. The frame for a reciprocating compressor of claim 1, wherein The bearing support is integrally formed by sheet metal stamping, and the bearing is integrally formed by aluminum alloy forging.

5. The frame for a reciprocating compressor according to any one of claims 1-4, characterized in that, The application further provides a frame for a reciprocating compressor comprising the bearing support according to any one of claims 1-4.

6. A reciprocating compressor characterized by ​

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