CN214755869U

CN214755869U - Heat radiation structure of motor of oil-free variable-frequency scroll compressor

Info

Publication number: CN214755869U
Application number: CN202023023630.0U
Authority: CN
Inventors: 陈洪辉; 邓洁
Original assignee: Foshan Jingzhiyun Medical Instrument Technology Co ltd
Current assignee: Foshan Jingzhiyun Medical Instrument Technology Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-11-16
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses an oil-free variable frequency scroll compressor motor heat dissipation structure, which comprises a shell, wherein a movable scroll plate, a crankshaft, a stator and a rotor are arranged in the inner cavity of the shell, and a static scroll plate meshed with the movable scroll plate is arranged at the end part of the shell; the stator is fixed with the shell and sleeved outside the rotor, one end of the crankshaft is connected with the rotor, the other end of the crankshaft is connected with the movable scroll plate, and the fixed scroll plate is provided with an air suction port and an air exhaust port which are communicated with the compression cavity; wherein, the casing is equipped with the air intake in the one end of stator, is equipped with the air exit at the other end of stator, be equipped with first filtration piece on the air intake, be equipped with fan blade on the bent axle, fan blade is rotatory along with the bent axle to produce by the air intake towards, stator, rotor and air exit's air current. The utility model discloses the radiating effect is good, and can avoid the impurity invasion to damage the motor.

Description

Heat radiation structure of motor of oil-free variable-frequency scroll compressor

Technical Field

The utility model relates to an there is not oily frequency conversion scroll compressor equipment technical field, especially relates to an there is not oily frequency conversion scroll compressor motor heat radiation structure.

Background

The compressor serves as a power mechanism in the air compression system, which plays an important role in the overall air compression system. The oil-free scroll compressor can be applied to the field of clean air sources, such as medical and laboratory, due to the characteristics of oil-free compression, high efficiency, small volume, light weight, stable operation and the like.

The oil-free scroll compressor mainly comprises a movable scroll, a fixed scroll, a shell, a crankshaft and a motor. When the oil-free scroll compressor works, the fixed scroll and the movable scroll are meshed to form a plurality of crescent compression cavities, along with the operation of the compressor, the compression cavities are continuously reduced towards the core part, the pressure is increased, and finally the exhaust port of the fixed scroll discharges.

The rotating speed of the existing oil-free scroll compressor is mostly fixed, the heat dissipation of the motor is realized by fins sleeved on the shell of the motor, and the motor is exposed in the air. Because the rotor in the motor is magnetic, the motor exposed in the air can adsorb metal substances around the compressor, and the motor and even the compressor are damaged. If the motor is sealed, the heat dissipation of the motor is not facilitated, and the demagnetization of the motor and the performance of the compressor are influenced due to overhigh temperature.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an oilless frequency conversion scroll compressor motor heat radiation structure is provided, its radiating effect is good, and can avoid the impurity invasion to damage the motor.

In order to solve the technical problem, the utility model provides an oil-free variable frequency scroll compressor motor heat dissipation structure, which comprises a shell, wherein a movable scroll, a crankshaft, a stator and a rotor are arranged in an inner cavity of the shell, and a fixed scroll meshed with the movable scroll is arranged at the end part of the shell;

the stator is fixed with the shell and sleeved outside the rotor, one end of the crankshaft is connected with the rotor, the other end of the crankshaft is connected with the movable scroll, the rotor drives the crankshaft to rotate so as to drive the movable scroll to revolve relative to the fixed scroll, a compression cavity with variable volume is formed between the movable scroll and the fixed scroll, and an air suction port and an air exhaust port which are communicated with the compression cavity are arranged on the fixed scroll;

wherein, the casing is equipped with the air intake in the one end of stator, is equipped with the air exit at the other end of stator, be equipped with first filtration piece on the air intake, be equipped with fan blade on the bent axle, fan blade is rotatory along with the bent axle to produce by the air intake towards, stator, rotor and air exit's air current.

As an improvement of the scheme, the fan blade, the rotor and the movable scroll are sequentially arranged on the crankshaft.

As an improvement of the scheme, a baffle is arranged at one end, far away from the fixed scroll, of the inner cavity of the shell, and the air outlet is formed in the baffle.

As an improvement of the scheme, a bearing is sleeved at the tail end of the crankshaft, and a mounting seat matched with the bearing is arranged on one side, opposite to the crankshaft, of the baffle.

As an improvement of the scheme, a second filtering piece is arranged in the inner cavity of the shell and is arranged on one side, back to the crankshaft, of the baffle plate.

As an improvement of the scheme, the fan blade is arranged between the bearing and the rotor.

As an improvement of the above scheme, the air inlet is arranged on the side wall of the shell and is positioned between the rotor and the movable scroll.

As an improvement of the above scheme, the first filter element comprises an air inlet connecting pipe and a filter filler, the air inlet connecting pipe is connected with the air inlet in a clamping mode or in a threaded connection mode, the filter filler is arranged in the air inlet connecting pipe, and an inlet of the air inlet connecting pipe is arranged below the air inlet connecting pipe.

As a modification of the above, the second filter element comprises at least two press plates arranged oppositely, and filter filler arranged between the press plates.

As an improvement of the scheme, the filtering filler is filtering cotton or a filtering net.

Implement the utility model discloses, following beneficial effect has:

the utility model discloses an oilless frequency conversion scroll compressor motor heat radiation structure, through setting up air intake and air exit on the casing, install first filter piece on the air intake, and set up fan blade on the casing bent axle, fan blade is along with the improvement of compressor rotational speed, the amount of wind is corresponding increase also, make the casing inner chamber part of installing stator and rotor form the negative pressure zone, low temperature gas around the compressor can be inhaled into the casing through the air intake that has first filter piece and cool off motor rotor and stator, the high temperature gas after the cooling is passed through fan blade and is arranged outside the casing of compressor again, this structure has realized in the compressor work simultaneously effectively dispels the heat to motor stator and rotor in step, make the compressor can last long-time work; in the cooling process, particulate matters in the gas are blocked by the first filtering piece, the gas entering the inner cavity of the shell is purer, the damage of metal impurities on the periphery of the compressor to the motor is avoided, and the service life of the compressor is ensured.

Drawings

Fig. 1 is a schematic structural view of an embodiment of a heat dissipation structure of an oil-free variable frequency scroll compressor motor according to the present invention;

FIG. 2 is a schematic structural view of the housing of FIG. 1;

FIG. 3 is a schematic structural view of another embodiment of a heat dissipation structure of the motor of the oil-free variable frequency scroll compressor of FIG. 1;

FIG. 4 is a schematic view of the mounting structure of the housing and the baffle of FIG. 3;

fig. 5 is a schematic structural view of the second filter element of fig. 3;

fig. 6 is a schematic cross-sectional structure of fig. 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the present embodiment provides an embodiment of a heat dissipation structure for an oil-free variable frequency scroll compressor motor, including a housing 1, a movable scroll 2, a crankshaft 3, a stator 4 and a rotor 5 are disposed in an inner cavity of the housing 1, and a fixed scroll 6 engaged with the movable scroll 2 is disposed at an end of the housing 1; the stator 4 is fixed with the shell 1 and sleeved outside the rotor 5, one end of the crankshaft 3 is connected with the rotor 5, the other end of the crankshaft is connected with the movable scroll 2, the rotor 5 drives the crankshaft 3 to rotate so as to drive the movable scroll 2 to revolve relative to the fixed scroll 6, a compression cavity with variable volume is formed between the movable scroll 2 and the fixed scroll 6, and the fixed scroll 6 is provided with an air suction port 61 and an air exhaust port 62 which are communicated with the compression cavity; wherein, combine fig. 2, casing 1 is equipped with air intake 11 in the one end of stator 4, is equipped with air exit 12 at the other end of stator 4, be equipped with first filtration piece 7 on the air intake 11, be equipped with fan blade 8 on the bent axle 3, fan blade 8 rotates along with bent axle 3 to produce by air intake 11 towards, stator 4, rotor 5 and air exit 12's air current.

According to the embodiment, the air inlet 11 and the air outlet 12 are arranged on the shell 1, the first filtering piece 7 is arranged on the air inlet 11, the fan blade 8 is arranged on the crankshaft 3 of the shell 1, the air volume of the fan blade 8 is correspondingly increased along with the increase of the rotating speed of the compressor, so that a negative pressure area is formed in the inner cavity part of the shell 1 where the stator 4 and the rotor 5 are arranged, low-temperature gas around the compressor can be sucked into the shell 1 through the air inlet 11 with the first filtering piece 7 to cool the motor rotor 5 and the stator 4 in the shell 1, and the cooled high-temperature gas is discharged out of the shell 1 of the compressor through the fan blade 8; in the cooling process, the particulate matter in the gas is blocked by the first filter element 7, the gas entering the inner cavity of the shell 1 is purer, the damage of metal impurities on the periphery of the compressor to the motor is avoided, and the service life of the compressor is ensured.

Specifically, the fan blade 8, the rotor 5, and the orbiting scroll 2 are sequentially disposed on the crankshaft 3. The air inlet 11 is arranged on the side wall of the shell 1 and is positioned between the rotor 5 and the movable scroll 2.

The first filter element 7 specifically comprises an air inlet connecting pipe 71 and a first filter filler 72, wherein the air inlet connecting pipe 71 is connected with the air inlet 11 in a clamping manner or in a threaded manner. The inlet of the air inlet connecting pipe 71 is preferably arranged below the air inlet connecting pipe 71, and the first filtering filler 72 is arranged in the air inlet connecting pipe 71.

As shown in fig. 3, the present embodiment provides another embodiment of a heat dissipation structure for a motor of an oil-free variable frequency scroll compressor. In this embodiment, a baffle 9 is preferably disposed at an end of the inner cavity of the casing 1 away from the fixed scroll 6, and referring to fig. 4, the exhaust outlet 12 is disposed on the baffle 9. The end cover of bent axle 3 is equipped with bearing 31, baffle 9 and the relative one side of bent axle 3 be equipped with the mount pad of bearing 31 looks adaptation. The fan blade 8 is arranged between the bearing 31 and the rotor 5. The baffle 9 can protect moving parts in the inner cavity of the shell 1 and can facilitate the installation of the crankshaft 3. In addition, the fan blade 8 is disposed between the bearing 31 and the rotor 5, so that the safety of the entire compressor can be improved.

With reference to fig. 5 and 6, the second filter element 10 is preferably disposed in the interior of the housing 1, and the second filter element 10 includes at least two opposite pressing plates 101, and a second filter filling 102 disposed between the pressing plates 101. For ease of assembly, the second filter element 10 is preferably arranged on the side of the baffle plate 9 facing away from the crankshaft 3. The second filtering piece 10 can prevent external metal impurities from entering between the stator 4 and the rotor 5 in the shell 1 through the air outlet 12, and the compressor is protected more comprehensively.

The first filtering filler 72 and the second filtering filler 102 may be filter cotton or a filter net, but are not limited thereto.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.

Claims

1. The motor heat dissipation structure of the oil-free variable frequency scroll compressor is characterized by comprising a shell, wherein a movable scroll, a crankshaft, a stator and a rotor are arranged in an inner cavity of the shell, and a static scroll meshed with the movable scroll is arranged at the end part of the shell;

2. An oil-free variable frequency scroll compressor motor heat dissipation structure as claimed in claim 1, wherein the fan blade, the rotor and the orbiting scroll are sequentially disposed on the crankshaft.

3. An oil-free variable frequency scroll compressor motor heat dissipation structure as claimed in claim 1 or 2, wherein a baffle is provided at an end of the housing inner cavity away from the fixed scroll, and the air outlet is provided on the baffle.

4. An oil-free variable frequency scroll compressor motor heat dissipation structure as claimed in claim 3, wherein a bearing is sleeved at the tail end of the crankshaft, and a mounting seat adapted to the bearing is arranged on the side of the baffle plate opposite to the crankshaft.

5. An oil-free variable frequency scroll compressor motor heat dissipation structure as claimed in claim 3, wherein the housing cavity is provided with a second filter element, and the second filter element is disposed on a side of the baffle plate facing away from the crankshaft.

6. An oil-free variable frequency scroll compressor motor heat dissipation structure as claimed in claim 4, wherein the fan blade is disposed between the bearing and the rotor.

7. An oil-free variable frequency scroll compressor motor heat dissipation structure as claimed in claim 1, wherein the air inlet is provided on a side wall of the housing between the rotor and the orbiting scroll.

8. An oil-free variable frequency scroll compressor motor heat dissipation structure as claimed in claim 1, wherein the first filter element comprises an air inlet connection pipe and a filter filler, the air inlet connection pipe is connected with the air inlet in a clamping or threaded manner, the filter filler is disposed in the air inlet connection pipe, and an inlet of the air inlet connection pipe is disposed below the air inlet connection pipe.

9. An oil-free variable frequency scroll compressor motor heat sink structure as claimed in claim 5, wherein the second filter member comprises at least two pressing plates disposed oppositely, and a filter packing disposed between the pressing plates.

10. An oil-free variable frequency scroll compressor motor heat dissipation structure as claimed in claim 8 or 9, wherein the filter filler is filter cotton or a filter screen.