CN210317671U

CN210317671U - Piston compressor anticollision stop device

Info

Publication number: CN210317671U
Application number: CN201921481830.5U
Authority: CN
Inventors: 冯皓; 汪中威; 钟佩; 江泽凡; 代荆晖
Original assignee: HUAYI COMPRESSOR (JINGZHOU) CO LTD
Current assignee: HUAYI COMPRESSOR (JINGZHOU) CO LTD
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-04-14
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a piston compressor anticollision stop device, the compressor pump body is equipped with piston rod and drive disk assembly including assembling on working cylinder, the working cylinder in the casing, the drive disk assembly is the crankshaft connecting rod structure of connection between electric motor rotor and piston rod. The compressor pump body is sealed in the shell through the top sealing cover at the top of the compressor shell, the limiting device comprises a limiting column and a limiting ring, the limiting column is arranged on a crankshaft of the transmission part, the limiting ring is arranged on the top sealing cover, at least one part of the limiting column extends into the limiting ring when the top sealing cover is closed on the compressor shell, a certain gap is reserved in the limiting ring, and the gap distance is smaller than or equal to the minimum installation distance between the outer contour of the compressor pump body and the inner wall of the compressor shell. The utility model discloses can effectively restrict the collision between the compressor pump body and the casing and reduce compressor noise, reduce the collision harm.

Description

Piston compressor anticollision stop device

Technical Field

The utility model belongs to the technical field of compressor equipment and specifically relates to a piston compressor anticollision stop device.

Background

The compressor device generally belongs to an important part of refrigeration equipment such as an air conditioner, a refrigerator and the like. The piston compressor is a compressor which makes gas pressurized and delivered by means of reciprocating motion of piston, belonging to volume type compressor. The piston compressor mainly comprises a machine body, a crankshaft, a connecting rod, a piston group, a valve, an oil circulation system and other parts. The compressor pump body comprises a working cylinder assembled in the shell, a transmission part for driving a piston rod of the working cylinder to do reciprocating motion in the cylinder of the working cylinder, and a driving motor for providing a power source for the transmission part, wherein the transmission part is a crankshaft connecting rod structure connected between a motor rotor and the piston rod. The driving motor drives the piston rod to move through the crankshaft connecting rod structure, the piston rod drives the piston to reciprocate in the cylinder, the volumes of the working cavities on two sides of the piston are changed in turn, gas on one side of the volume reduction is discharged through the gas valve due to pressure increase, gas on one side of the volume increase is sucked through the gas valve due to pressure reduction, and the transmission part is used for realizing reciprocating motion and compressing a refrigerant.

In the starting and running processes of the piston compressor, the pump body of the compressor often collides with the periphery of the shell, and then large vibration and noise are generated. In order to reduce the collision and noise, a spring is usually arranged between the bottom of the compressor pump body and the shell in the existing design, and a form of anti-collision limiting points is arranged between the periphery of the compressor pump body and the shell. The spring is arranged at the bottom, so that the collision probability of the pump body and the shell is reduced; the collision position of the pump body when colliding with the shell is limited by the form of arranging the anti-collision limiting points on the periphery of the pump body, and the damage to other parts of the pump body when colliding is reduced. But the form of establishing crashproof limit point around the pump body of current design, because the compressor pump body is not regular component with the casing, the distance between each position of the pump body and the casing differs, leads to crashproof limit point and compressor casing apart from hardly keeping unanimous, in the use of reality, the too little place in clearance collides and can produce great noise, and too big local collision in the transportation leads to the fact the pump body too big bottom spring that leads to the fact again and drops of range.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the aforesaid that exists is not enough and a piston compressor anticollision stop device that provides among the prior art, through set up spacing post on the compressor pump body bent axle to set up the form of spacing collar at the top closing cap inner wall, utilize the cooperation form of spacing post and spacing collar to make the rocking range of bent axle limited all the time, thereby solve the collision problem between the compressor pump body and the shells inner wall.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a piston compressor anti-collision limiting device is used for limiting collision between a compressor pump body and a compressor shell, the compressor pump body comprises a working cylinder assembled in the shell, a transmission part driving a piston rod of the working cylinder to do reciprocating motion in the cylinder and a driving motor providing a power source for the transmission part, the transmission part is a crankshaft connecting rod structure connected between a motor rotor and the piston rod, the compressor shell top is sealed in the shell by arranging a top sealing cover, the limiting device comprises a limiting column and a limiting ring, the limiting column is arranged on a crankshaft of the transmission part, the limiting ring is arranged on the top sealing cover, the limiting ring can enable at least one part of the limiting column to extend into the limiting ring and reserve a certain gap between the limiting column and the inner side wall of the limiting ring when the top sealing cover is closed on the compressor shell so as to allow the limiting column to rotate in the limiting ring all the time when the compressor pump body operates, the clearance distance is smaller than the minimum installation distance between the outer contour of the compressor pump body and the inner wall of the compressor shell.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a bent axle sets up spacing post on the compressor pump body, sets up the form that corresponds the spacing collar on the compressor top closing cap to with spacing post restriction in the spacing collar, utilize the spacing collar to block the form of spacing post motion range and reach the motion range between the restriction compressor casing and the compressor pump body, thereby avoid the collision between the compressor pump body and the casing, reduced the noise of compressor during operation, avoid the damage that the collision brought between the compressor casing and the pump body simultaneously.

Drawings

Fig. 1 is a schematic structural view of a piston compressor of the present invention;

FIG. 2 is a schematic structural diagram of a piston compressor crankshaft limiting device;

FIG. 3 is a partial top view of the stop block and stop post.

The reference numbers in the drawings correspond to the part names as follows:

the device comprises a limiting device 1, a limiting column 11, an elastic rubber body 12, a limiting ring 13, a spring 14, a limiting block 15, a crankshaft 2, a motor 3, a top sealing cover 4 and a piston rod 5.

Detailed Description

In order to make the utility model realize that technical means, creation characteristics, achievement purpose and effect are clearer and easily understand, it is right to combine below the figure and the detailed implementation mode the utility model discloses do further explanation:

as shown in fig. 1, 2 and 3, a piston compressor anti-collision limiting device is used for limiting collision between a compressor pump body and a compressor shell, the compressor pump body comprises a working cylinder assembled in the shell, a transmission part for driving a piston rod 5 of the working cylinder to reciprocate in the cylinder and a motor 3 for providing a power source for the transmission part, the transmission part is a crankshaft 2 connecting rod structure connected between a rotor of the motor 3 and the piston rod 5, the top of the compressor shell seals the compressor pump body in the shell by arranging a top seal cover 4, the limiting device 1 comprises a limiting column 11 and a limiting ring 13, the limiting column 11 is arranged on the crankshaft 2 of the transmission part, the limiting ring 13 is arranged on the top seal cover 4, the limiting ring 13 can ensure that at least one part of the limiting column 11 extends into the limiting ring 13 and a certain gap is reserved when the top seal cover 4 is closed on the compressor shell, when the compressor pump body is allowed to operate, the limiting column 11 rotates in the limiting ring 13 all the time, the gap distance is smaller than the minimum installation distance between the outer contour of the compressor pump body and the inner wall of the compressor shell, and after the limiting column 11 is in contact with the limiting ring 13, due to the fact that the motion process of the limiting column 11 is larger than the distance between the compressor pump body and the compressor shell, after the limiting column 11 collides with the limiting ring 13, a gap is reserved between the compressor pump body and the shell, and collision cannot occur.

The limiting ring 13 is concave, the bottom surface of the limiting ring 13 is welded on the top sealing cover 4, and the concave side wall vertically downwards forms a limiting space of the limiting column 11. A plurality of groups of springs 14 are distributed on the inner wall of the limiting ring 13 along the circumferential direction of the inner wall, one end of each spring 14 is fixed on the inner wall of the limiting ring 13, and the other end of each spring is connected with a limiting block 15. The limiting blocks 15 are arc-shaped, and all the limiting blocks 15 surround to form a circular hole. Spacing post 11 passes the circular port and stretches into spacing collar 13, and when spacing post 11 rocked in spacing collar 13, spacing post 11 preferentially contacted with the circular port that stopper 15 formed, and the circular port back even has spring 14, can reduce the impact between spacing post 11 and the spacing collar 13.

The limiting column 11 is covered with an elastic rubber body 12 on a column body passing through the surrounding area of the limiting block 15. When the spacing post 11 collides with the spacing collar 13, the elastic rubber body 12 on the spacing post 11 preferentially contacts with the inner wall of the spacing collar 13, and the elastic rubber body 12 can play a role in buffering and reducing noise.

The utility model discloses a theory of operation: the utility model provides a piston compressor anticollision stop device, when the compressor starts the operation, the whole production of the compressor pump body is rocked, drive 2 epaxial spacing posts 11 of bent axle and rock, bent axle 2 itself rotates under motor 3's effect, spacing post 11 rotation and rock in spacing collar 13, spacing post 11 at first contacts with the circular port that stopper 15 is constituteed when rocking, under stopper 15 and the effect of the spring 14 who links to each other with it, the circular port at first plays certain cushioning effect to spacing post 11, reduce the compressor pump body amplitude of rocking. Spacing post 11 contacts with spacing collar 13 inner wall when rocking amplitude is great, and the elastic rubber body 12 and the contact of spacing collar 13 on the spacing post 11, elastic rubber body 12 play certain cushioning effect to noise when can reducing spacing post 11 and spacing collar 13 collision. The spacing post 11 is limited by the space in the spacing ring 13, and can not move forward when contacting the spacing ring 13. The clearance between the limiting column 11 and the limiting ring 13 is less than or equal to the minimum installation distance between the outer contour of the compressor pump body and the inner wall of the compressor shell. After the limiting column 11 is contacted with the limiting ring 13, a certain gap is still formed between the pump body of the compressor and the shell, and collision cannot occur, so that the limiting function is achieved.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a piston compressor anticollision stop device for collision between restriction compressor pump body and the compressor housing, the compressor pump body is including the working cylinder of assembly in the casing, drive piston rod (5) of working cylinder make reciprocating motion's drive disk assembly and motor (3) for drive disk assembly provides the power supply in the jar, drive disk assembly is for connecting bent axle (2) connecting rod structure between motor (3) rotor and piston rod (5), the compressor housing top is through setting up top closing cap (4) and seals the compressor pump body in the casing, a serial communication port, stop device (1) are including spacing post (11) and spacing collar (13), establish on drive disk assembly's bent axle (2) spacing post (11), establish at top closing cap (4) inner wall spacing collar (13), spacing collar (13) can make spacing post (11) at least some stretch into spacing collar when top closing cap (4) close the compressor housing on (13) A certain gap is reserved between the inner part and the inner side wall of the limiting ring so as to allow the limiting column (11) to rotate in the limiting ring (13) all the time when the compressor pump body operates, and the gap distance is smaller than the minimum installation distance between the outer contour of the compressor pump body and the inner wall of the compressor shell.

2. A piston compressor bump stop according to claim 1, wherein the stop collar (13) is provided with springs (14) fixed on the inner wall of the stop collar (13) and distributed along the circumferential direction of the inner wall, and a stop block (15) fixed at the end of each spring (14), and the stop post (11) passes through the area surrounded by the stop block (15) and extends into the stop collar (13).

3. A piston compressor bump stop according to claim 2, characterized in that the stop collar (13) is a circular cap fixed to the inner wall of the top cover (4).

4. A bump-stop unit for a piston compressor as claimed in claim 2 or 3, characterized in that each of the stoppers (15) is arc-shaped, the area surrounded by the stoppers (15) forms a circular hole, and the stopper post (11) passes through the circular hole and extends into the stopper ring (13).

5. A piston compressor anticollision limiting device according to claim 4, characterized in that the column body of the limiting column (11) passing through the area surrounded by the limiting block (15) is covered with an elastic rubber body (12).