CN210273746U

CN210273746U - Small screw compressor motor

Info

Publication number: CN210273746U
Application number: CN201920909831.9U
Authority: CN
Inventors: 金鸣镝
Original assignee: Suzhou Baishiteng Electric Co ltd
Current assignee: Suzhou Baishiteng Electric Co ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-04-07
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses a small screw compressor motor, which comprises a shell, a stator, a rotor and a rotating shaft, wherein the stator is arranged in the shell, the rotor is arranged in the stator, the rotating shaft is arranged on the rotor, and two ends of the rotating shaft penetrate through the shell; still wrap the side cap, check valve and piston mechanism, casing side circumference sets up the logical liquid pipe that a plurality of axial runs through, and set up the liquid inlet ring and the play liquid ring of connecting logical liquid pipe at the both ends of casing, the setting of side cap symmetry is in the both sides of casing lateral wall, form the stock solution chamber with the casing, the stock solution chamber is respectively through first through-hole and second through-hole and liquid inlet ring and play liquid ring intercommunication, the check valve sets up in first through-hole and second through-hole, piston mechanism sets up in the casing, and with piston bore sliding seal connection, utilize pivot drive piston mechanism at the downthehole reciprocating motion of piston. The utility model discloses a set up the stock solution chamber of symmetry in the casing outside, ingenious application piston mechanism, through the pressure that changes two stock solution intracavity, and then the flow of drive coolant liquid.

Description

Small screw compressor motor

Technical Field

The utility model relates to the field of electric machines, in particular to little screw compressor motor.

Background

When the motor is used, heat can be generated, and if the temperature of the motor is high, the work of the motor can be influenced, and the motor can be seriously damaged; therefore, in design, the motor is often cooled by using cooling equipment; a common motor usually adopts a cooling fan to dissipate heat to form air convection, so that a cooling port is arranged on a shell; however, the motor is in outdoor work under many conditions, and if the motor runs in a rainy day, rainwater can enter the motor from the heat dissipation port possibly, so that the motor is damaged.

SUMMERY OF THE UTILITY MODEL

In view of the defects existing in the prior art, the main object of the present invention is to overcome the disadvantages of the prior art, and to disclose a small screw compressor motor, which comprises a housing, a stator, a rotor and a rotating shaft, wherein the stator is arranged in the housing, the rotor is arranged in the stator, the rotating shaft is arranged on the rotor, and two ends of the rotating shaft penetrate through the housing; the cooling device is characterized by further comprising a side cover, a one-way valve and a piston mechanism, wherein a plurality of axially-penetrating liquid-passing pipes are circumferentially arranged on the side edge of the shell, liquid inlet rings and liquid outlet rings which are connected with the liquid-passing pipes are arranged at two end parts of the shell, the side cover is symmetrically arranged on two sides of the side wall of the shell and forms a liquid storage cavity with the shell, the liquid storage cavity is respectively communicated with the liquid inlet rings and the liquid outlet rings through first through holes and second through holes, the one-way valve is arranged in the first through holes and the second through holes, cooling liquid can only enter the liquid outlet rings from the liquid storage cavity through the one-way valve in the first through holes, the cooling liquid can only enter the liquid storage cavity from the liquid outlet rings through the one-way valve in the second through holes, the shell is provided with a piston hole communicated with the liquid storage cavity, and the piston mechanism is arranged in the shell, and the rotating shaft is connected with the piston hole in a sliding and sealing mode, and the piston mechanism is driven to reciprocate in the piston hole by the rotating shaft.

Further, the piston mechanism comprises a body and piston rods, the piston rods are arranged on the body, the two piston rods are respectively arranged in the first piston hole and the second piston hole in a sliding sealing mode, a pushing groove is formed in the body in a concave mode, a through waist-shaped hole allowing a rotor rotating shaft to pass through is formed in the bottom of the pushing groove, a pushing block is eccentrically arranged on the rotating shaft of the rotor, and the pushing block is arranged in the pushing groove.

Furthermore, a bearing is arranged on the pushing block and is in rolling contact with the pushing groove through the bearing.

Further, the check valve comprises a valve body, a spring and a sealing cover, the valve body comprises a guide portion and a communicating portion, the sealing cover and the spring are arranged in the guide portion, the sealing cover enables the communicating portion to be normally closed through the spring, and a vent hole is formed in the side wall of the guide portion.

Further, the side covers are arranged in two numbers and are symmetrically arranged on two sides of the shell respectively.

Further, an oil filling hole communicated with the liquid storage cavity is formed in the upper portion of the side cover and is sealed through the screw.

Further, the shell comprises a shell body and end covers arranged on two sides of the shell body, and sealing rings used for sealing the liquid outlet ring and the liquid inlet ring are arranged on the end covers in a protruding mode.

Furthermore, a plurality of radiating fins extending into the liquid storage cavity are arranged on the side cover.

The utility model discloses the beneficial effect who gains:

the utility model arranges symmetrical liquid storage cavities outside the shell, skillfully utilizes the piston mechanism, and further drives the flow of the cooling liquid by changing the pressure in the two liquid storage cavities; through the eccentric wheel structure, the piston is driven to reciprocate by the driving force of the rotating shaft, so that the cost is saved; in addition, the liquid storage cavities are symmetrically arranged on two sides, the pressure in the two liquid storage cavities is simultaneously controlled through the piston rod, one liquid storage cavity discharges cooling liquid, and the other liquid storage cavity sucks the cooling liquid into the liquid storage cavities, so that the flowing of the cooling liquid is promoted; the radiating fins extend into the liquid storage cavity from the outside, the contact area between the radiating fins and the cooling liquid is increased, and the radiating effect is further improved.

Drawings

Fig. 1 is a perspective view of a small screw compressor motor according to the present invention;

FIG. 2 is a side view of a small screw compressor motor;

FIG. 3 is an exploded view of a small screw compressor motor;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

FIG. 5 is a side view of the housing;

FIG. 6 is a front view of the housing;

FIG. 7 is a cross-sectional view A-A of FIG. 5;

FIG. 8 is a schematic view of the internal structure of the motor;

FIG. 9 is a schematic structural view of the piston mechanism;

FIG. 10 is a schematic view of the connection of the body to the piston rod;

FIG. 11 is a schematic view of the check valve;

FIG. 12 is another schematic view of FIG. 11;

FIG. 13 is a front view of FIG. 11;

FIG. 14 is a cross-sectional view A-A of FIG. 13;

FIG. 15 is a schematic structural view of an end cap;

FIG. 16 is a schematic structural view of the housing;

the reference numbers are as follows:

1. the liquid pump comprises a shell, 2, a stator, 3, a rotor, 4, a rotating shaft, 5, a side cover, 6, a piston mechanism, 7, a one-way valve, 11, a liquid through pipe, 12, a liquid inlet ring, 13, a liquid outlet ring, 14, a liquid storage cavity, 15, a first through hole, 16, a second through hole, 17, a piston hole, 18, a shell body, 19, an end cover, 20, a sealing ring, 41, a pushing block, 51, an oil filling hole, 52, a cooling fin, 61, a body, 62, a piston rod, 611, a pushing groove, 612, a kidney-shaped hole, 71, a valve body, 72, a sealing cover, 73, a spring, 711, a communicating part, 712, a guide part, 713 and a vent hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model discloses a little screw compressor motor, as shown in fig. 1-7, including casing 1, stator 2, rotor 3 and pivot 4, stator 2 is fixed to be set up in casing 1, and rotor 3 sets up in stator 2, and pivot 4 sets up on rotor 3 to run through casing 1, drive pivot 4 through rotor 3 and rotate. The cooling device is characterized by further comprising a side cover 5, a piston mechanism 6 and a one-way valve 7, wherein a plurality of axially-penetrating liquid-passing pipes 11 are circumferentially arranged on the side wall of the shell 1, a liquid inlet ring 12 and a liquid outlet ring 13 which are connected with the liquid-passing pipes 11 are arranged at two end parts of the shell 1, and cooling liquid flows into the liquid outlet ring 13 from the liquid inlet ring 12 through the liquid-passing pipes 11. The side covers 5 are arranged in two and symmetrically arranged on two side walls of the shell 1, and a liquid storage cavity 14 is formed by the side covers 5 and the shell 1 and used for storing cooling liquid. In an embodiment, a first through hole 15 and a second through hole 16 are disposed on a side wall of the housing 1, wherein the first through hole 15 communicates the liquid storage cavity 14 with the liquid inlet ring 12, and the second through hole 16 communicates the liquid storage cavity 14 with the liquid outlet ring 13. The check valve 7 is arranged in the first through hole 15 and the second through hole 16; the first through hole 15 enables cooling liquid to enter the liquid inlet ring 12 only from the liquid storage cavity 14 through the one-way valve 7, and the second through hole 16 enables cooling liquid to enter the liquid storage cavity 14 only from the liquid outlet ring 13 through the one-way valve 7, so that the cooling liquid forms a loop; that is, the cooling liquid enters the liquid inlet ring 13 from the liquid storage cavity 14 through the first through hole 15, enters the liquid outlet ring 13 through the liquid through pipe 11, and then returns to the liquid storage cavity 14 through the second through hole 16, and the motor is cooled by the flowing cooling liquid. Still be provided with the piston hole 17 with stock solution chamber 14 intercommunication on the casing 1, piston mechanism 6 sets up in casing 1 to be connected with pivot 4, be in through pivot 4 drive piston mechanism 6 reciprocating motion in piston hole 17, and then change the pressure of stock solution intracavity 11, cooperation check valve 7 realizes the drive to the coolant liquid.

In one embodiment, as shown in fig. 4-10, the piston mechanism 6 includes a body 61 and two piston rods 62, the two piston rods 62 are disposed on the body 61, and the two piston rods 62 are slidably and sealingly disposed in the piston holes 17. The body 61 is concavely provided with a pushing groove 611, the groove bottom of the pushing groove 611 is provided with a through kidney-shaped hole 612 allowing the rotating shaft 4 of the rotor 3 to pass through, the rotating shaft 4 is eccentrically provided with a pushing block 41, and the pushing block 41 makes a circular motion; the rotating shaft 4 is arranged in the waist-shaped hole 612, the pushing block 41 is arranged in the pushing groove 611, and the body 61 is pushed to drive the piston rod 62 to move back and forth through the circular motion of the pushing block 41; meanwhile, the piston mechanism 6 is guided to reciprocate by the fit of the kidney-shaped hole 612 and the rotating shaft 4. In a preferred embodiment, the piston holes 17 are symmetrically arranged on both end sides of the piston mechanism 6, and the pressure of the reservoir chambers 14 on both sides is controlled simultaneously by the reciprocating movement of the piston mechanism 6. To facilitate mounting of the piston mechanism 6 within the housing 1, the body 61 is removably connected to the piston rod 62. Specifically, fixing screw holes are respectively arranged on the body 61 and the piston rod 62, the piston rod 62 is arranged in the piston hole, and then the piston rod 62 is connected with the body 61 through screws.

In the above embodiment, when the pushing block 41 moves circularly to push the piston mechanism 6 to move reciprocally, the pushing block 41 and the side wall of the pushing groove 611 are in sliding friction, and after long-term use, the wear is severe, which affects the service life. Preferably, a bearing (not shown) is further included, the bearing is arranged on the pushing block 41, and the piston mechanism 6 is pushed to reciprocate through the shaft; at this time, rolling friction is changed between the pushing block 41 and the side wall of the pushing groove 611, so that abrasion is greatly reduced, and the service life is prolonged.

The flow of the cooling liquid is specifically described in conjunction with the above embodiments; when the piston rod 62 moves towards the liquid storage cavity 14 on the left side, so that the pressure of the liquid storage cavity 14 on the left side is increased, the second through hole is closed due to the action of the one-way valve 7, and the cooling liquid enters the liquid inlet ring 12 through the first through hole 15; at the same time, the pressure in the right reservoir chamber 14 is reduced, and the cooling liquid is sucked into the right reservoir chamber 14 from the liquid outlet ring 13, so that the pressure in the liquid through pipe 11 is constant. The cooling liquid enters the liquid outlet ring 13 from the liquid inlet ring 12 through the liquid through pipe 11, and the flow of the cooling liquid is realized. Similarly, when the piston rod 62 moves towards the liquid storage cavity 14 on the right side, the pressure of the liquid storage cavity 14 on the right side increases, the cooling liquid enters the liquid inlet ring 12 from the liquid storage cavity 14 on the right side through the first through hole 15, the pressure of the liquid storage cavity 14 on the left side decreases, and the cooling liquid in the liquid outlet ring 13 is sucked into the liquid storage cavity 14 on the left side.

In one embodiment, as shown in fig. 11 to 14, the check valve 7 includes a valve body 71, a seal cap 72, and a spring 73, the valve body 71 is provided with a communicating portion 711 and a guide portion 712, the seal cap 72 and the spring 73 are provided in the guide portion 712, the seal cap 72 is supported and guided by the guide portion 712 to reciprocate toward the communicating portion 711, and the communicating portion 711 is brought into a normally closed state by the spring 73. Further, a vent 713 is opened in a side wall of the guide 712. When the seal cover 2 is opened, gas is discharged from the vent hole 713 of the guide portion 712 through the communication portion 711.

In one embodiment, as shown in fig. 15, an oil filling hole 51 communicating with the reservoir chamber 14 is provided above the side cover 5, and the oil filling hole 51 is sealed by a screw. No matter the motor is in a horizontal state or a vertical state when in use, the motor is positioned above the side cover 5.

In one embodiment, as shown in fig. 16, the housing 1 includes a housing body 18 and end caps 19 disposed at both sides of the housing body, and the end caps 19 are protruded with sealing rings 20 for sealing the liquid outlet ring 12 and the liquid inlet ring 13. When the motor is installed, the end covers 19 are fixed at two ends of the shell body 18, and the sealing rings are embedded into the liquid outlet ring 12 and the liquid inlet ring 13, so that the structure is convenient for installing the internal structure of the motor, and meanwhile, the liquid through pipe 11, the liquid inlet ring 12 and the liquid outlet ring 13 are convenient to process.

In one embodiment, as shown in fig. 1, 4 and 15, the side cover 5 is provided with a plurality of heat dissipation fins 52 extending into the liquid storage cavity. The contact area between the fins 52 and the coolant is increased, and the temperature of the coolant is reduced by the outer fins 52. Further improving the heat dissipation effect.

When the utility model is used, as shown in fig. 1-16, the cooling liquid is injected into the liquid storage cavity 14 from the oil injection hole 51, so that the liquid storage cavity 14, the liquid through pipe 11, the liquid inlet ring 12 and the liquid outlet ring 13 are filled with the cooling liquid. After the injection is completed, the oil hole 51 is sealed by a screw. The motor runs, the pushing block 41 pushes the body 61 to move leftwards, so that the piston rod 62 on the left side is plugged into the liquid storage cavity 14, the pressure of the liquid storage cavity 14 is increased, the second through hole is closed due to the action of the one-way valve 7, and the cooling liquid enters the liquid inlet ring 12 through the first through hole 15; at the same time, the pressure in the right reservoir chamber 14 is reduced, and the cooling liquid is sucked into the right reservoir chamber 14 from the liquid outlet ring 13, so that the pressure in the liquid through pipe 11 is constant. The cooling liquid enters the liquid outlet ring 13 from the liquid inlet ring 12 through the liquid through pipe 11, and the flow of the cooling liquid is realized. Similarly, when the piston rod 62 moves towards the liquid storage cavity 14 on the right side, the pressure of the liquid storage cavity 14 on the right side increases, the cooling liquid enters the liquid inlet ring 12 from the liquid storage cavity 14 on the right side through the first through hole 15, the pressure of the liquid storage cavity 14 on the left side decreases, and the cooling liquid in the liquid outlet ring 13 is sucked into the liquid storage cavity 14 on the left side. Thereby realizing the circulation of the cooling liquid.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is within the spirit and scope of the present invention.

Claims

1. A small screw compressor motor comprises a shell, a stator, a rotor and a rotating shaft, wherein the stator is arranged in the shell, the rotor is arranged in the stator, the rotating shaft is arranged on the rotor, and two ends of the rotating shaft penetrate through the shell; the cooling device is characterized by further comprising a side cover, a one-way valve and a piston mechanism, wherein a plurality of axially-through liquid passing pipes are arranged on the side edge of the shell in the circumferential direction, liquid inlet rings and liquid outlet rings which are connected with the liquid passing pipes are arranged at two ends of the shell, the side cover is symmetrically arranged on two sides of the side wall of the shell to form liquid storage cavities with the shell, the liquid storage cavities are respectively communicated with the liquid inlet rings and the liquid outlet rings through first through holes and second through holes, the one-way valve is arranged in the first through holes and the second through holes, cooling liquid can only enter the liquid outlet rings from the liquid storage cavities through the one-way valve in the first through holes, the cooling liquid can only enter the liquid storage cavities from the liquid outlet rings through the one-way valve in the second through holes, the shell is provided with a piston hole communicated with the liquid storage cavities, and the piston mechanism is arranged in the shell, and the rotating shaft is connected with the piston hole in a sliding and sealing mode, and the piston mechanism is driven to reciprocate in the piston hole by the rotating shaft.

2. The small screw compressor motor according to claim 1, wherein the piston mechanism comprises a body and piston rods, the piston rods are disposed on the body, the two piston rods are slidably and hermetically disposed in the piston holes, a pushing groove is recessed in the body, a through kidney-shaped hole allowing a rotor shaft to pass therethrough is disposed at a bottom of the pushing groove, a pushing block is eccentrically disposed on the rotor shaft, and the pushing block is disposed in the pushing groove.

3. The small screw compressor motor as claimed in claim 2, wherein the pushing block is provided with a bearing, and is in rolling contact with the pushing groove through the bearing.

4. The small screw compressor motor according to claim 1, wherein the check valve includes a valve body, a spring, and a seal cover, the valve body includes a guide portion and a communicating portion, the seal cover and the spring are provided in the guide portion, the seal cover is normally closed by the spring, and a vent hole is provided in a side wall of the guide portion.

5. The small screw compressor motor according to claim 1, wherein two side covers are provided, and are symmetrically provided on both sides of the housing.

6. The small screw compressor motor according to claim 1, wherein an oil injection hole communicating with the liquid storage cavity is provided above the side cover, and the oil injection hole is sealed by a screw.

7. The small screw compressor motor according to claim 1, wherein the housing includes a housing body and end caps disposed on both sides of the housing body, the end caps being provided with sealing rings for sealing the liquid outlet ring and the liquid inlet ring.

8. A small screw compressor motor according to claim 1, wherein said side cover is provided with a plurality of fins extending into said reservoir.