Anti-rotation mechanism of scroll compressor

Abstract

The anti-rotation mechanism comprises a limiting disc and at least one connecting assembly, the limiting disc is arranged in a cavity formed by an outer shell and detachably and fixedly connected with the outer shell, the disc face of the limiting disc is parallel to the disc face of a movable vortex disc, and the connecting assembly is fixedly connected with the limiting disc. A limiting groove is formed in the side wall, close to the orbiting scroll, of the limiting disc, the limiting groove is of an oval ring structure, the movement track of the limiting groove is the same as that of the orbiting scroll, and a notch allowing a shaft sleeve of the orbiting scroll to penetrate through is formed in the limiting disc; one end of each connecting assembly is connected with the corresponding limiting groove in a sliding mode, and each connecting assembly can move along the corresponding limiting groove. The scroll compressor has the advantages that the orbiting scroll is limited through the limiting groove to avoid autorotation of the orbiting scroll, when the connecting assembly is abraded, only the connecting assembly needs to be replaced, replacement is convenient, the connecting assembly is simple in production process and low in machining difficulty, and maintenance cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field especially relates to a scroll compressor anti-rotation mechanism. BACKGROUND

[0002] The scroll compressor mainly has a shell, static scroll, dynamic scroll and motor, the shell forms a cavity, the static scroll and dynamic scroll are all arranged in the cavity, the static scroll and dynamic scroll have same linear and intermeshing scroll teeth, the scroll teeth form a plurality of crescent compression chambers, the disc surface of the static scroll is fixedly connected with the shell, the shaft sleeve of the dynamic scroll is fixedly connected with the output shaft of the motor, the output shaft of the motor drives the dynamic scroll to revolve around the static scroll and make translational motion, so that the gas is continuously compressed in the crescent compression chamber, due to the tangential gas force on the dynamic scroll, the dynamic scroll generates rotation, in order to prevent the rotation of the dynamic scroll, the anti-rotation mechanism needs to be set, and the rotation torque of the dynamic scroll is balanced by the anti-rotation mechanism.

[0003] The existing scroll compressor anti-rotation mechanism (such as the radial anti-rotation mechanism of the scroll compressor disclosed in application No. 201220386354.0) is generally a cross slide ring structure, but the cross slide ring reciprocates continuously during work, and the key and the sliding block are prone to wear, and the key cannot be repaired after wear, so the cross slide ring needs to be replaced as a whole, the maintenance cost is high, in addition, the key needs high technology and good material to ensure the service life of the key during production, the production process is complex, and the machining difficulty is high. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the above technical defects, and provides a scroll compressor anti-rotation mechanism, which solves the technical problems of the anti-rotation mechanism of the cross slide ring structure in the prior art, high maintenance cost, complex production process and high machining difficulty.

[0005] To achieve the above technical purpose, the technical scheme of the utility model provides a scroll compressor anti-rotation mechanism, which comprises:

[0006] A limiting disc is arranged in the cavity formed by the shell and is detachably fixed to the shell, the disc surface of the limiting disc is parallel to the disc surface of the dynamic scroll, a limiting groove is formed in the side wall of the limiting disc close to the dynamic scroll, the limiting groove is an elliptical ring structure and has the same movement track as the dynamic scroll, and a slot is formed in the limiting disc and used for allowing the shaft sleeve of the dynamic scroll to pass through.

[0007] At least one connecting assembly is provided, one end of each connecting assembly is slidably connected to the limiting groove and can move along the limiting groove, and the other end of each connecting assembly is used for detachably fixedly connecting to the disc surface of the dynamic scroll.

[0008] Further, the notch is coaxial with the limiting groove.

[0009] Further, the connecting assembly comprises a sliding block, a connecting block, a butt joint plate and a plurality of fasteners, the sliding block is slidingly arranged in the limiting groove, the connecting block is arranged outside the limiting groove and fixedly connected with the sliding block, the butt joint plate is fixedly connected with the connecting block, one end of each of the fasteners is detachably fixedly connected with the butt joint plate, and the other end of each of the fasteners is used for detachably fixedly connecting with the disc surface of the orbiting scroll.

[0010] Further, each of the fasteners is a bolt, a plurality of first screw holes are formed in the butt joint plate, each of the bolts passes through a corresponding first screw hole and is screwed with the corresponding first screw hole, and the end of each of the bolts is used for being screwed into the disc surface of the orbiting scroll and screwed with the disc surface of the orbiting scroll.

[0011] Further, the connecting assembly further comprises two mounting sheets and a plurality of balls, the two mounting sheets are arranged on the two sides of the sliding block and are fixedly connected with the sliding block, a plurality of accommodating grooves are formed in the two mounting sheets, each of the balls is rollingly arranged in a corresponding accommodating groove, and each of the balls further rollingly abuts against the two side groove walls of the limiting groove.

[0012] Further, a plurality of rolling grooves are formed in the two side groove walls of the limiting groove, each of the rolling grooves is a closed structure, and each of the balls is further rollingly arranged in a corresponding rolling groove.

[0013] Further, the anti-rotation mechanism of the scroll compressor further comprises a plurality of mounting assemblies, each of the mounting assemblies is arranged in the cavity formed by the shell and is arranged in the side of the limiting disc in the circumferential direction, one end of each of the mounting assemblies is fixedly connected with the limiting disc, and the other end of each of the mounting assemblies is used for abutting against the shell.

[0014] Further, the mounting assembly comprises a fixed shaft, a movable shaft and an abutting plate, the fixed shaft is arranged in the radial direction of the limiting disc, one end of the fixed shaft is fixedly connected with the limiting disc, one end of the movable shaft is detachably fixedly connected with the fixed shaft, one end of the movable shaft has a fastening state of being fastened with the fixed shaft and an adjustment state of being slidable along the length direction of the fixed shaft to adjust the distance between the other end of the movable shaft and the limiting disc, and the abutting plate is fixedly connected with the other end of the movable shaft and is used for abutting against the shell.

[0015] Further, the movable shaft is a screw rod, a second screw hole extending in the axial direction of the fixed shaft is formed in the fixed shaft, and one end of the screw rod extends into the second screw hole and is screwed with the second screw hole.

[0016] Further, the mounting assembly further comprises a rotating sleeve, which is fixedly sleeved on the screw rod.

[0017] Compared with the prior art, the beneficial effects of the utility model include: in use, one end of each connecting assembly is slidably connected with the limiting groove, the limiting disc is arranged in the cavity formed by the shell, the disc surface of the limiting disc is parallel to the disc surface of the movable scroll, the shaft sleeve of the movable scroll passes through the slot, the output shaft of the motor is detachably fixedly connected with the shaft sleeve of the movable scroll, the limiting disc is detachably fixedly connected with the shell, the other end of each connecting assembly is detachably fixedly connected with the disc surface of the movable scroll, the output shaft of the motor drives the movable scroll to revolve around the fixed scroll, the movement of the movable scroll drives each connecting assembly to move, each connecting assembly slides in the limiting groove, the movable scroll is limited by the limiting groove to avoid self-rotation, when the connecting assembly is worn, only the connecting assembly needs to be replaced, the connecting assembly is convenient to replace, the production process of the connecting assembly is simple, the processing difficulty is low, and the maintenance cost is effectively reduced, thereby avoiding the problems of high maintenance cost, complex production process and high processing difficulty caused by using the cross slip ring as the anti-rotation mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective structural schematic view of the anti-rotation mechanism of the scroll compressor provided by the utility model;

[0019] Figure 2 is a perspective structural schematic view of the anti-rotation mechanism of the scroll compressor provided by the utility model from another viewing angle;

[0020] Figure 3 is a perspective structural schematic view of the anti-rotation mechanism of the scroll compressor provided by the utility model when the anti-rotation mechanism is connected with the movable scroll;

[0021] Figure 4 is a perspective structural schematic view of the anti-rotation mechanism of the scroll compressor provided by the utility model from another viewing angle when the anti-rotation mechanism is connected with the movable scroll;

[0022] Figure 5 is a structural schematic view of the anti-rotation mechanism of the scroll compressor provided by the utility model when the anti-rotation mechanism is connected with the movable scroll;

[0023] Figure 6 is Figure 5 is an enlarged view of A in the figure;

[0024] In the figure: 1 - moving scroll, 100 - limiting disc, 110 - limiting groove, 111 - rolling groove, 120 - slot, 200 - connecting assembly, 210 - sliding block, 220 - connecting block, 230 - butt plate, 240 - fastener, 250 - mounting piece, 251 - accommodating groove, 260 - ball, 300 - mounting assembly, 310 - fixed shaft, 320 - movable shaft, 330 - abutting plate, 340 - rotating sleeve, 350 - welding plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0026] The utility model provides a scroll compressor anti-rotation mechanism, its structure as Figure 1 Figure 6 As shown in the figure, it comprises a limiting disc 100 and at least one connecting assembly 200, the limiting disc 100 is arranged in the cavity formed by the shell and is detachably fixed with the shell, the disc surface of the limiting disc 100 is parallel with the disc surface of the moving scroll 1, a limiting groove 110 is formed on the side wall of the limiting disc 100 close to the moving scroll 1, the limiting groove 110 is an elliptical ring structure and is identical with the movement track of the moving scroll 1, a slot 120 is formed on the limiting disc 100 for the shaft sleeve of the moving scroll 1 to pass through, one end of each connecting assembly 200 is slidably connected with the limiting groove 110 and can move along the limiting groove 110, and the other end of each connecting assembly 200 is used for detachably fixed connection with the disc surface of the moving scroll 1.

[0027] ​In use, one end of each of the connecting assemblies 200 is in sliding connection with the limiting groove 110, the limiting disc 100 is arranged in the cavity formed by the shell, the disc surface of the limiting disc 100 is parallel to the disc surface of the movable scroll 1, the shaft sleeve of the movable scroll 1 passes through the slot 120, the output shaft of the motor is detachably fixedly connected with the shaft sleeve of the movable scroll 1, the limiting disc 100 is detachably fixedly connected with the shell, the other end of each of the connecting assemblies 200 is detachably fixedly connected with the disc surface of the movable scroll 1, the output shaft of the motor drives the movable scroll 1 to revolve around the fixed scroll and translate, the movement of the movable scroll 1 drives each of the connecting assemblies 200 to move, each of the connecting assemblies 200 slides in the limiting groove 110, the limiting groove 110 limits the movement of the movable scroll 1 to avoid self-rotation of the movable scroll 1, when the connecting assemblies 200 are worn, only the connecting assemblies 200 need to be replaced, which is convenient to replace, the production process of the connecting assemblies 200 is simple and the processing difficulty is low, thereby effectively reducing the maintenance cost, and the problems of high maintenance cost, complex production process and high processing difficulty caused by the use of the cross slip ring as the anti-rotation mechanism are avoided.

[0028] As a preferred embodiment, please refer to Figure 1 and Figure 4 , the slot 120 is a circular opening, the slot 120 is coaxial with the limiting groove 110, and the diameter of the slot 120 is greater than the shaft sleeve of the movable scroll 1, so that the output shaft of the motor drives the movable scroll 1 to revolve around the fixed scroll and translate.

[0029] As a preferred embodiment, please refer to Figure 1 and Figure 5 , the connecting assembly 200 comprises a sliding block 210, a connecting block 220, a butt joint plate 230 and a plurality of fasteners 240, the sliding block 210 is arranged in the limiting groove 110, the connecting block 220 is arranged outside the limiting groove 110 and is fixedly connected with the sliding block 210, the butt joint plate 230 is fixedly connected with the connecting block 220, one end of each of the fasteners 240 is detachably fixedly connected with the butt joint plate 230, and the other end of each of the fasteners 240 is used for detachably fixedly connecting with the disc surface of the movable scroll 1, the sliding connection of the sliding block 210 and the limiting groove 110 forms limiting, and the detachable fixed connection of the butt joint plate 230 and the disc surface of the movable scroll 1 by the fasteners 240 makes the disassembly and assembly of the anti-rotation mechanism and the disc surface of the movable scroll 1 convenient.

[0030] As a preferred embodiment, please refer to Figure 5Each of the fasteners 240 is a bolt, a plurality of first screw holes are formed on the butt plate 230, each of the bolts passes through a corresponding first screw hole and is screwed with the corresponding first screw hole, the end of each of the bolts is used for being screwed into the disc surface of the orbiting scroll 1 and screwed with the disc surface of the orbiting scroll 1, the bolt is rotated in a forward direction or a reverse direction, so that the end of the bolt is screwed into or out of the disc surface of the orbiting scroll 1, and the detachable fixed connection between the butt plate 230 and the disc surface of the orbiting scroll 1 can be achieved, and the butt plate 230 is convenient to disassemble and assemble.

[0031] As a preferred embodiment, refer to Figure 6 The connecting assembly 200 further comprises two mounting plates 250 and a plurality of balls 260, the two mounting plates 250 are arranged on the two sides of the sliding block 210 and are fixedly connected with the sliding block 210, a plurality of accommodation grooves 251 are formed on the two mounting plates 250, each of the balls 260 is arranged in a corresponding accommodation groove 251 in a rolling manner, and each of the balls 260 further rolls against the two side walls of the limiting groove 110, so that the sliding friction between the sliding block 210 and the limiting groove 110 is converted into rolling friction, the friction between the sliding block 210 and the limiting groove 110 is reduced, the wearing part is changed into the ball 260, and only the worn ball 260 needs to be replaced, the ball 260 is low in production cost and convenient to replace, and the maintenance cost can be further reduced.

[0032] As a preferred embodiment, refer to Figure 6 A plurality of rolling grooves 111 are formed on the two side walls of the limiting groove 110, each of the rolling grooves 111 is a closed structure, and each of the balls 260 is arranged in a corresponding rolling groove 111 in a rolling manner, and the balls 260 are limited by the rolling grooves 111, so that the balls 260 are prevented from deviating during rolling.

[0033] As a preferred embodiment, refer to Figure 1 The anti-self-rotation mechanism of the scroll compressor further comprises a plurality of mounting assemblies 300, each of the mounting assemblies 300 is arranged in the cavity formed by the shell and is arranged in the side of the limiting disc 100 in a circumferential direction, one end of each of the mounting assemblies 300 is fixedly connected with the limiting disc 100, and the other end of each of the mounting assemblies 300 is used for abutting against the shell, the mounting assemblies 300 are arranged, the detachable fixed connection between the limiting disc 100 and the shell is achieved, and the limiting disc 100 is convenient to disassemble and assemble.

[0034] As a preferred embodiment, refer to Figure 1The mounting assembly 300 comprises a fixed shaft 310, a movable shaft 320 and a pressing plate 330, the fixed shaft 310 is arranged along the radial direction of the limiting disc 100, one end of the fixed shaft 310 is fixedly connected with the limiting disc 100, one end of the movable shaft 320 is detachably fixedly connected with the fixed shaft 310, one end of the movable shaft 320 has a fastening state of being fastened with the fixed shaft 310 and an adjusting state of being slidable along the length direction of the fixed shaft 310 to adjust the distance between the other end of the movable shaft 320 and the limiting disc 100, the pressing plate 330 is fixedly connected with the other end of the movable shaft 320 and is used for pressing against the shell, by operating the movable shaft 320, the movable shaft 320 is driven to move away from the limiting disc 100 along the length direction of the fixed shaft 310, thereby driving the pressing plate 330 to move away from the limiting disc 100 until the pressing plate 330 presses against the shell.

[0035] As a preferred embodiment, refer to Figure 1 The limiting disc 100 is a regular polygon structure, each mounting assembly 300 corresponds to each edge of the limiting disc 100, and the stability of mounting the limiting disc 100 can be improved.

[0036] As a preferred embodiment, refer to Figure 1 The movable shaft 320 is a screw rod, a second screw hole extending along the axial direction of the fixed shaft 310 is formed in the fixed shaft 310, one end of the screw rod is inserted into the second screw hole and is screwed with the second screw hole, by rotating the screw rod in a forward direction or a reverse direction, the screw rod is driven to move towards or away from the limiting disc 100 along the length direction of the fixed shaft 310, thereby driving the pressing plate 330 to move towards or away from the limiting disc 100, so that the pressing plate 330 is pressed against the shell or separated from the shell, and the mounting and dismounting are convenient.

[0037] As a preferred embodiment, refer to Figure 1 The mounting assembly 300 further comprises a rotating sleeve 340, the rotating sleeve 340 is fixedly sleeved on the screw rod, the rotating sleeve 340 is convenient for a hand to hold and drive the screw rod to rotate.

[0038] As a preferred embodiment, refer to Figure 1 The mounting assembly 300 further comprises a welding plate 350, the welding plate 350 is detachably fixedly connected with the side wall of the pressing plate 330 away from the limiting disc 100 and is used for being fixedly connected with the shell by welding, the pressing plate 330 can be welded with the shell through the welding plate 350, and the stability of connecting the pressing plate 330 with the shell is improved.

[0039] In order to better understand the present application, the following is combined with Figure 1 - Figure 6The working principle of the technical scheme of the utility model is explained in detail as follows:

[0040] In use, each sliding block 210 is slidably connected with the limiting groove 110, the limiting disc 100 is arranged in the cavity formed by the shell, the disc surface of the limiting disc 100 is parallel to the disc surface of the movable scroll 1, the slot 120 through which the shaft sleeve of the movable scroll 1 passes, the output shaft of the motor is detachably fixedly connected with the shaft sleeve of the movable scroll 1, the screw is positively rotated, the screw moves away from the limiting disc 100 along the length direction of the fixed shaft 310, the abutting plate 330 is driven to move away from the limiting disc 100, until the abutting plate 330 abuts against the shell, the detachable fixed connection between the limiting disc 100 and the disc surface of the movable scroll 1 is realized, the bolt is positively rotated, the end of the bolt is screwed into the disc surface of the movable scroll 1 or the detachable fixed connection between the connecting assembly 200 and the disc surface of the movable scroll 1 is realized, the output shaft of the motor drives the movable scroll 1 to revolve around the fixed scroll, the movement of the movable scroll 1 drives each connecting assembly 200 to move, each sliding block 210 slides in the limiting groove 110, each ball 260 rolls in the corresponding rolling groove 111, the movable scroll 1 is limited by the limiting groove 110 to avoid self-rotation, the sliding friction between the sliding block 210 and the limiting groove 110 is converted into rolling friction, the friction between the sliding block 210 and the limiting groove 110 is reduced, the wearing part is changed into the ball 260, when the ball 260 is worn, only the worn ball 260 needs to be replaced, the ball 260 is low in production cost, convenient to replace and effective in reducing maintenance cost, thereby avoiding the problems of high maintenance cost, complex production process and high machining difficulty caused by the use of the cross slip ring as the anti-rotation mechanism.

[0041] The anti-rotation mechanism of the scroll compressor has the following beneficial effects:

[0042] (1) The screw is positively or negatively rotated, the screw moves towards or away from the limiting disc 100 along the length direction of the fixed shaft 310, the abutting plate 330 is driven to move towards or away from the limiting disc 100, so that the abutting plate 330 abuts against or separates from the shell, and the limiting disc 100 is convenient to disassemble and assemble;

[0043] (2) The sliding friction between the sliding block 210 and the limiting groove 110 is converted into rolling friction, the friction between the sliding block 210 and the limiting groove 110 is reduced, the wearing part is changed into the ball 260, when the ball 260 is worn, only the worn ball 260 needs to be replaced, the ball 260 is low in production cost, convenient to replace and effective in reducing maintenance cost.

[0044] (3) The connecting assembly 200 is moved by the movement of the moving scroll 1, so that each sliding block 210 slides in the limiting groove 110, and the limiting groove 110 limits the movement of the moving scroll 1 to avoid self-rotation of the moving scroll 1. When the sliding block 210 is worn, only the sliding block 210 needs to be replaced, which is convenient to replace, effectively reduces the maintenance cost, and the production process of the sliding block 210 is simple and the processing difficulty is low, effectively reduces the maintenance cost, avoids the problem of high maintenance cost and complex production process caused by using the cross slip ring as the anti-rotation mechanism, and the processing difficulty is high.

[0045] The specific embodiment of the utility model described above does not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and deformations made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A scroll compressor anti-rotation mechanism characterized by comprising: The utility model provides a kind of limit disc, be set in the cavity formed by shell, and with shell detachable fixed connection, the disc surface of the limit disc and the disc surface of moving scroll are parallel to each other, a limit slot is opened in the side wall of the limit disc close to moving scroll, the limit slot is elliptical ring structure, and with the same movement track of moving scroll, slot opening for the shaft sleeve of moving scroll is passed is opened in the limit disc; At least one connecting assembly, one end of each of the connecting assemblies is slidably connected with the limit slot, and each of the connecting assemblies can move along the limit slot, the other end of each of the connecting assemblies is used for detachable fixed connection with the disc surface of moving scroll. The slot opening is coaxial with the limit slot.

2. The scroll compressor anti-rotation mechanism according to claim 1, wherein The connecting assembly includes a sliding block, a connecting block, a docking plate, and a plurality of fasteners. The sliding block is slidably arranged in the limit slot. The connecting block is arranged outside the limit slot and is fixedly connected with the sliding block. The docking plate is fixedly connected with the connecting block. One end of each of the fasteners is detachably fixedly connected with the docking plate. The other end of each of the fasteners is used for detachable fixed connection with the disc surface of moving scroll.

3. The scroll compressor anti-rotation mechanism of claim 1, wherein Each of the fasteners is a bolt. A plurality of first screw holes are opened in the docking plate. Each of the bolts passes through a corresponding first screw hole and is screwed with the corresponding first screw hole. The end of each of the bolts is used for screwing into the disc surface of moving scroll and is screwed with the disc surface of moving scroll.

4. The scroll compressor anti-rotation mechanism according to claim 3, wherein The connecting assembly further includes two mounting pieces and a plurality of balls. The two mounting pieces are respectively arranged on both sides of the sliding block and are fixedly connected with the sliding block. A plurality of accommodation grooves are opened in the two mounting pieces. Each of the balls is rollingly arranged in a corresponding accommodation groove. Each of the balls further rollingly abuts against the two side walls of the limit slot.

5. The scroll compressor anti-rotation mechanism according to claim 3, wherein A plurality of rolling grooves are opened in the two side walls of the limit slot. Each of the rolling grooves is a closed structure. Each of the balls is further rollingly arranged in a corresponding rolling groove.

6. The scroll compressor anti-rotation mechanism according to claim 5, wherein The utility model further includes a plurality of mounting assemblies. Each of the mounting assemblies is arranged in the cavity formed by the shell and is arranged in the side of the limit disc along the circumference. One end of each of the mounting assemblies is fixedly connected with the limit disc. The other end of each of the mounting assemblies is used for abutting against the shell.

7. The scroll compressor anti-rotation mechanism of claim 1, wherein The mounting assembly includes a fixed shaft, a movable shaft, and an abutting plate. The fixed shaft is arranged along the radial direction of the limit disc. One end of the fixed shaft is fixedly connected with the limit disc. One end of the movable shaft is detachably fixedly connected with the fixed shaft. One end of the movable shaft has a fastening state in which the movable shaft is tightly fastened with the fixed shaft and an adjustment state in which the other end of the movable shaft can slide along the length direction of the fixed shaft to adjust the distance between the other end of the movable shaft and the limit disc. The abutting plate is fixedly connected with the other end of the movable shaft and is used for abutting against the shell.

8. The scroll compressor anti-rotation mechanism of claim 7, wherein The movable shaft is a screw rod. A second screw hole extending along the axial direction of the fixed shaft is opened in the fixed shaft. One end of the screw rod extends into the second screw hole and is screwed with the second screw hole.

9. The scroll compressor anti-rotation mechanism of claim 8, wherein, The mounting assembly further includes a rotating sleeve. The rotating sleeve is fixedly sleeved on the screw rod.

10. The scroll compressor anti-rotation mechanism of claim 9, wherein ​

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