CN110486274A - A kind of radial anti-rotation mechanism for screw compressor - Google Patents

Abstract

The invention relates to a radial anti-rotation mechanism for a scroll compressor, comprising: a main bearing seat; a compression mechanism supported by the main bearing seat, and the compression mechanism includes static vortices coupled to each other via an Oldham slip ring A series of compression chambers for compressing fluid are formed between the static scroll and the movable scroll; the guide ring is matched with the static scroll and connected with the hole on the main bearing seat by fastening bolts To limit the radial displacement of the fixed scroll; between the guide ring and the fixed scroll, there is a multi-sided unilateral limiting assembly for limiting the movement of the fixed scroll, and the radial anti-rotation for the scroll compressor of the present invention For the static turbine, the multi-side and single-side limit is used, and the processing accuracy of the convex part and the limit piece is not high. It only needs to be able to limit the convex part through the limit piece. At the same time, the limit piece The processing technology of the convex part is simple, the installation is convenient, the processing technology is convenient, and it has strong practicability, which meets the production and processing needs of the enterprise.

Description

A radial anti-rotation mechanism for scroll compressors

technical field

The invention belongs to the technical field related to scroll compressors, in particular to a radial anti-rotation mechanism for scroll compressors.

Background technique

The scroll compressor is a compressor with a compressible volume composed of a fixed involute scroll and an eccentric involute moving scroll. The scroll compressor has two double functions The dynamic and static vortex disks of the equation-shaped line are meshed with each other.

Patent CN202971198U discloses a radial anti-rotation mechanism of a scroll compressor, which consists of a static scroll, a guide ring, a main bearing seat, a bolt, an Oldham slip ring, a moving scroll, a suction pipe, a shell, a partition, Composed of the exhaust pipe and the top cover, it is mainly through the clearance fit between the concave part on the guide ring and the convex part on the fixed scroll to limit the rotation of the static scroll with the moving scroll. This solution can solve the problem of scroll compression. The problem of the rotation of the static scroll of the machine, but because the structure of the convex part and the concave part is used to cooperate with the limit of the static scroll, this kind of cooperation belongs to one-sided bilateral limit, only the convex part is accurately stuck in the concave part and does not move In order to meet the needs of use, this requires high processing accuracy for the concave and convex parts, and the production process of the convex and concave parts is complicated, and the processing is difficult, resulting in poor practicability and unable to meet the production and processing needs of enterprises.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a simple structure, strong practicability, easy disassembly and assembly, and limit the rotation of the static turbine by limiting the rotation of the static scroll through multi-side unilateral restrictions. Radial anti-rotation mechanism.

In order to achieve the above object, the technical solution adopted by the present invention is: a radial anti-rotation mechanism for scroll compressors, comprising:

Main bearing seat; a compression mechanism supported by the main bearing seat, the compression mechanism includes a static scroll and a movable scroll coupled to each other through an Oldham slip ring, and a series of a compression chamber for compressing fluid;

The guide ring is matched with the static scroll with a gap, and is connected with the hole on the main bearing seat by fastening bolts to limit the radial displacement of the static scroll;

Between the guide ring and the fixed scroll, there is a multi-side unilateral limiting assembly for restricting the movement of the fixed scroll.

Further, the multi-side unilateral limiting assembly includes at least two protrusions arranged on the static turbine and at least two limiting pieces set on the guide ring, at least two limiting pieces define at least two Movement of the protrusions in the opposite direction limits the rotation of the stationary turbine.

Further, the limiting member is a boss.

Further, the limiter is composed of bolts and limit pins, and the limiter is arranged in the through hole of the guide ring.

Further, the limit pin has an internal thread, and the bolt has an external thread that matches the internal thread of the limit pin; the bolt enters from the top of the through hole and connects with the bottom of the guide ring. The limit pins are screwed together.

Further, the through hole is provided with an external thread, and the bolt is provided with an external thread suitable for the internal thread; the limit pin is arranged at the bottom of the guide ring; the end of the bolt with the internal thread is sequentially Pass through the limit pin and the through hole, and connect with the internal thread thread inside the through hole.

Further, the limiter is a limit pin, and a through hole is opened on the guide ring; the limit pin enters the through hole from the bottom of the guide ring, and the limit pin is threadedly connected to the inner wall of the through hole .

Further, the convex part is arranged on the axial circumferential surface of the static turbine, and the convex part is an envelope part of the keyway of the Oldham slip ring.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

The radial anti-rotation mechanism for scroll compressors of the present invention adopts multi-side and single-side limit for the static turbine, and does not require high processing accuracy for the convex part and the limit piece, and only needs to be able to pass through the limit It is only necessary to limit the convex part by the part. At the same time, the processing technology of the limit part and the convex part is simple, the installation is convenient, the processing technology is convenient, and it has strong practicability, which meets the production and processing needs of the enterprise.

Description of drawings

Below in conjunction with accompanying drawing, technical solution of the present invention will be further described:

Accompanying drawing 1 is the three-dimensional structure schematic diagram of the present invention;

Accompanying drawing 2 is the three-dimensional structural schematic diagram of the cooperation between the guide ring and the static turbine in the first embodiment

Accompanying drawing 3 is the three-dimensional structure schematic diagram of guide ring and boss cooperation in embodiment one;

Accompanying drawing 4 is the three-dimensional structure schematic diagram that guide ring and static turbine cooperate in embodiment two;

Accompanying drawing 5 is the three-dimensional exploded structure schematic diagram of the guide ring and the limiter in the second embodiment;

Among them: main bearing seat 1, Oldham slip ring 2, static scroll 3, moving scroll 4, guide ring 5, bolt 6, limit pin 7, fastening bolt 8, boss 9, first convex part 31, second Two protrusions 32 , a through hole 50 , and a boss 80 .

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to accompanying drawing 1, a radial anti-rotation mechanism for a scroll compressor according to the present invention includes: a main bearing seat 1, a compression mechanism supported by the main bearing seat 1, and the compression mechanism includes The fixed scroll 3 and the moving scroll 4 are coupled to each other through the Oldham slip ring 2, and a series of compression chambers for compressing fluid are formed between the fixed scroll 3 and the moving scroll 4; in addition, the guide ring 5 and the static There is a clearance fit between the scrolls 3, and the guide ring 5 and the hole on the main bearing housing 1 are connected by fastening bolts 8 to limit the radial displacement of the static scroll 3, and there is a set between the guide ring 5 and the static scroll 3. It is a multi-side and single-side limiting component for limiting the rotation of the fixed scroll 3 .

Specifically, the multi-side unilateral restriction assembly includes at least two protrusions arranged on the static turbine 3 and at least two restriction members arranged on the axial side plane of the guide ring 5, at least two of the restriction members pass through the unilateral The rotation of the static turbine 3 is limited by restricting the movement of at least two of the protrusions in opposite directions, so as to ensure that the static turbine 3 will not rotate with the rotation of the movable turbine 4 .

Wherein, the convex portion is extended from the circumferential flange surface of the static turbine 3, and the convex portion may be the enveloping portion of the keyway of the Oldham slip ring, and of course other forms may also be adopted.

In addition, the limiter can be composed of many different structures, here are several specific implementation methods, as follows:

According to the first embodiment of the present invention, the limiting member can be a boss 80, which is arranged on the axial side plane of the guide ring 5, and is directly integrally formed by the guide ring 5 and the boss 80. , the processing technology is simple and convenient, which is convenient for actual production and installation. Of course, the shape of the limiting member is not limited to the circular shape of the boss 80, and any other shape is within the scope of protection of this embodiment.

According to the second embodiment of the present invention, the limiter includes a bolt 6 and a limit pin 7, the limit pin 7 is provided with an internal thread, and the bolt 6 is provided with an external thread that matches the internal thread of the limit pin 7 thread; during installation, the bolt 6 is inserted into the through hole 50 from the upper end of the guide ring 5, the limit pin 7 is placed at the bottom of the through hole 50, and then the bolt 6 penetrates through the through hole 50 and then inserted between the limit pins 7 , The bolt 6 and the limit pin 7 are threadedly fixed, so that the bolt 6 fixes the limit pin 7 on the axial side plane of the guide ring 5, and acts as a limit to the convex part of the static scroll 3.

According to the third embodiment of the present invention, the restricting member is composed of a bolt 6 and a limit pin 7, a corresponding through hole 50 is opened in the guide ring 5, and an internal thread is opened in the through hole 50, and the bolt 6 is provided with a External thread compatible with the internal thread; during installation, the limit pin 7 is arranged at the bottom of the through hole 50, and the end with the internal thread on the bolt 6 passes through the limit pin 7 and the through hole 50 in turn, and the external thread on the bolt 6 is connected to the through hole 50. The internal thread inside the hole is threaded, so that the bolt 6 is used to fix the limit pin 7 on the axial side plane of the guide ring 5, which plays the role of limiting the convex part of the static scroll 3.

According to the fourth embodiment of the present invention, the limiting member is a limit pin 7, and the limit pin 7 enters the through hole 50 from the bottom of the through hole 50 during installation, and the thread between the limit pin and the inner wall of the through hole 50 In this way, the support of the limit pin 7 can also be fixed on the axial side plane of the guide ring 5, so as to limit the position of the convex part in the fixed scroll 3.

Embodiment one:

Please refer to the accompanying drawings 2-3, this embodiment includes two first protrusions 31 and second protrusions 32 located on the axial circumferential surface of the static scroll 3 and two limiters located on the guide ring 5. In this embodiment, the two restricting parts are described as the two bosses 80 in the first embodiment; one boss 80 is located on the right side of the first boss 31, and the other boss 80 is located at the second boss 32, so that when the movable scroll 4 rotates, due to the rotation of the first convex portion 31 and the second convex portion 32 on the fixed scroll 3 in the opposite direction, the first convex portion 31 and the second convex portion 32 limit, the fixed scroll 3 will not rotate due to the rotation of the movable scroll 4.

Embodiment two:

Referring to accompanying drawings 4-5, this embodiment includes two first protrusions 31 and second protrusions 32 located on the axial circumferential surface of the static scroll 3 and two limiting pieces located on the guide ring 5, in this embodiment In the embodiment, the two restricting parts are described in the second embodiment; the restricting parts include bolts 6 and limit pins 7, and when installing, the bolts 6 are inserted from the upper end of the guide ring 5 into the through hole 50, and then connected with the guide ring. 5. The limit pin 7 at the bottom is screwed, so that the limit pin 7 is arranged on the axial side plane of the guide ring 5; one limit pin 7 is located on the right side of the first protrusion 31, and the other limit pin 7 is located on the The right side of the second convex portion 32, so that when the movable scroll 4 rotates, since the first convex portion 31 and the second convex portion 32 on the fixed scroll 3 rotate in two opposite directions, they are respectively limited by two positions. The pin 7 is limited, and the fixed scroll 3 will not rotate due to the rotation of the movable scroll 4 .

Embodiment three:

This embodiment includes two first protrusions 31 and second protrusions 32 located on the axial circumferential surface of the static scroll and two restricting pieces on the guide ring 5, one of which is the first implementation The boss 80 in the mode, the other limiter is the limit pin 7 and the bolt 6 in the third embodiment; the boss 80 is located on the right side of the first convex part 31, and the limit pin 7 and the bolt 6 are located on the second The right side of the convex portion 32, so that when the movable scroll 4 rotates, since the first convex portion 31 and the second convex portion 32 on the fixed scroll 3 rotate in opposite directions, they are respectively limited by the boss 80 and the stopper. The pin 7 is stuck so that the fixed scroll 3 will not rotate due to the rotation of the movable scroll 4 .

Embodiment four:

This embodiment includes four protrusions on the axial circumferential surface of the static scroll and four limiters on the guide ring 5, among which the four limiters are limit pins 7 in the fourth embodiment; In this way, four limit pins 7 can be randomly distributed on one side of the four protrusions, as long as it is ensured that at least one limit pin 7 and the other three limit pins 7 are not located on the same side of the protrusion; At this time, since the four protrusions on the fixed scroll 3 are stuck by the four limit pins 7 in two opposite directions, the fixed scroll 3 will not rotate due to the rotation of the movable scroll 4 .

Embodiment five:

This embodiment includes the first convex portion 31 and the second convex portion 32 located on the axial circumferential surface of the static scroll 3 and three limiting pieces on the guide ring. In this embodiment, the limiting pieces are of the second type. The embodiment of the present invention will be described; the limiter includes a bolt 6 and a limit pin 7, wherein two limit pins 7 are located on the right side of the first protrusion 31, and the other limit pin 7 is located on the right side of the second protrusion 32, In this way, when the movable scroll 4 rotates, since the rotation of the first convex portion 31 and the second convex portion 32 on the fixed scroll 3 in opposite directions are blocked by two stop pins 7 and one stop pin 7 respectively, The fixed scroll 3 will not rotate due to the rotation of the movable scroll 4 .

Embodiment six:

This embodiment includes the first convex portion 31 and the second convex portion 32 located on the axial circumferential surface of the static scroll 3 and four restricting pieces located on the guide ring 5. In this embodiment, the restricting piece is the fourth The first embodiment is described; the limiter is a stop pin 7, and the two stop pins 7 are located on the right side of the first protrusion 31, and the two stop pins 7 are located on the right side of the second protrusion 32, so that when moving When the scroll 4 rotates, since the rotation of the first protrusion 31 and the second protrusion 32 on the fixed scroll 3 in the opposite direction is limited by the corresponding two limit pins 7, the fixed scroll 3 will not Rotation is performed due to the rotation of the movable scroll 4 .

In the radial anti-rotation mechanism used for scroll compressors, the stopper can be a boss, and the boss and the guide ring are integrally formed, and the processing technology is simple. At the same time, the stopper can also be a positioning pin or a positioning pin. It is composed of pins and bolts. When installing, you only need to drill the corresponding through holes on the guide ring, and then install the positioning pin or the positioning pin and the bolt in the through hole to form a mechanism that restricts the rotation of the convex part. The overall installation is convenient.

The radial anti-rotation mechanism for scroll compressors of the present invention adopts multi-side and single-side limit for the static turbine. The limit piece only needs to limit the convex part. At the same time, the processing technology of the limit piece and the convex part is simple, the installation is convenient, the processing technology is convenient, and it has strong practicability, which meets the production and processing needs of the enterprise.

The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. All technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (8)

1. a kind of radial anti-rotation mechanism for screw compressor, comprising:

Main bearing seat；The compression mechanism supported by the main bearing seat, the compression mechanism include mutual through cross slip-ring each other The quiet vortex and dynamic vortex of coupling form a series of compression chambers for compression fluid between the quiet vortex and dynamic vortex；

Guide ring and quiet vortex clearance fit, and connect with the hole on main bearing seat by fastening bolt to limit the diameter of quiet vortex To displacement；

It is characterized by: being equipped with the unilateral restriction group in more sides for limiting quiet vortex rotation between the guide ring and quiet vortex Part.

2. the radial anti-rotation mechanism according to claim 1 for screw compressor, it is characterised in that: more sides are single Side limitation unit includes at least two protrusions being arranged on quiet turbine and at least two are arranged in stopper on guide ring, At least two stoppers limit quiet turbine by the movement in the opposite direction of unilateral restriction at least two protrusion Rotation.

3. the radial anti-rotation mechanism according to claim 2 for screw compressor, it is characterised in that: the stopper For a boss.

4. the radial anti-rotation mechanism according to claim 2 for screw compressor, it is characterised in that: the stopper It is made of bolt and spacer pin, the stopper configuration is in the through-hole of guide ring.

5. the radial anti-rotation mechanism according to claim 4 for screw compressor, it is characterised in that: the spacer pin On be provided with internal screw thread, external screw thread compatible with the internal screw thread of spacer pin is provided on the bolt；The bolt is from the top of through-hole Portion enters and is connected with the spacer pin screw thread for being located at guide ring bottom.

6. the radial anti-rotation mechanism according to claim 4 for screw compressor, it is characterised in that: in the through-hole It is provided with internal screw thread, external screw thread compatible with internal screw thread is provided on the bolt；The bottom of guide ring is arranged in the spacer pin； Band internal screw thread one end of the bolt sequentially passes through spacer pin and through-hole, and is connected with the internal screw thread screw thread inside through-hole.

7. the radial anti-rotation mechanism according to claim 2 for screw compressor, it is characterised in that: the stopper For a spacer pin, through-hole is provided on the guide ring；The spacer pin enters in through-hole from the bottom of guide ring, and spacer pin with It is threadedly coupled between through-hole wall.

8. the radial anti-rotation mechanism according to claim 1 for screw compressor, it is characterised in that: the protrusion is set It sets on the axial periphery of quiet turbine, and the protrusion is cross slip-ring keyway envelope portion.