Mechatronics screw main machine

Abstract

The utility model belongs to the technical field of air compressors, and provides a mechanical and electrical integration screw main machine which comprises a shell, and the shell is provided with a working cavity, a driving cavity and a frequency conversion cavity. A screw rod is rotationally arranged in the working cavity; a driving assembly is arranged in the driving cavity, and an output shaft of the driving assembly and the screw rod are coaxially arranged and connected; a frequency conversion module is arranged in the frequency conversion cavity and electrically connected with the driving assembly. The screw rod and the driving assembly are integrated in the shell, so that the axis deviation between the screw rod and the output shaft of the driving assembly can be reduced; the frequency conversion module in the integrated screw main machine is subjected to circuit design according to the parameters of the driving assembly, so that the matching degree of the frequency conversion module and the driving assembly can be improved, and the situation that normal use is affected due to the fact that a frequency converter and a driving motor are not matched is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of air compressors, and particularly relates to an electromechanical integrated screw main engine. Background Art

[0002] An air compressor is an energy conversion device that converts mechanical energy into gas pressure energy, and a screw air compressor is one of its implementation manners. The power component of a screw air compressor is the main engine, and the main engine of a screw air compressor includes a housing and a twin screw rotatably arranged in the housing, and the twin screw meshes with each other; the housing has a cooling inlet and an exhaust port, and one end of the housing is connected with a driving motor, and the driving motor can drive one of the screws to rotate.

[0003] The main engine of the screw air compressor in the prior art is of a split design. The manufacturer needs to install the housing, the driving motor and the frequency converter produced by different suppliers together. After installation, there will be a deviation between the axis of the driving motor main shaft and the axis of the screw, and there will also be a low matching degree between the frequency converter and the driving motor, which is likely to affect the normal use of the main engine. Summary of the Utility Model

[0004] An embodiment of the utility model provides an electromechanical integrated screw main engine, aiming to solve the technical problems of axis deviation between the driving motor and the screw and low matching degree between the frequency converter and the driving motor in the prior art.

[0005] To achieve the above object, the technical solution adopted by the utility model is:

[0006] Provide an electromechanical integrated screw main engine, including:

[0007] A housing having a working chamber, a driving chamber and a frequency conversion chamber; wherein, a screw is rotatably arranged in the working chamber; a driving assembly is arranged in the driving chamber, and an output shaft of the driving assembly is coaxially arranged and connected with the screw; a frequency conversion module is arranged in the frequency conversion chamber, and the frequency conversion module is electrically connected with the driving assembly.

[0008] In a possible implementation manner, the working chamber, the driving chamber and the frequency conversion chamber are sequentially arranged along the axis direction of the housing.

[0009] In a possible implementation manner, a partition is connected between the driving chamber and the frequency conversion chamber, and the partition seals the driving chamber; the diameter of the frequency conversion chamber is larger than that of the driving chamber, the outer peripheral wall of the frequency conversion chamber has a cooling inlet, and the end of the frequency conversion chamber has a cooling outlet facing the outer peripheral wall of the driving chamber; an air-cooled driving structure is arranged in the frequency conversion chamber.

[0010] In a possible implementation, a cooling inlet is provided on the outer peripheral wall of the frequency conversion cavity, and a cooling outlet is provided on the outer peripheral wall of the drive cavity; an air-cooled drive structure is provided in the frequency conversion cavity.

[0011] In a possible implementation, the air-cooled drive structure includes:

[0012] A radiator, connected in the frequency conversion cavity; the radiator corresponds to the cooling inlet, and the radiator divides the frequency conversion cavity into a cooling cavity and an installation cavity; the frequency conversion module is installed in the installation cavity and is in contact with the radiator;

[0013] A fan, connected to the other end of the output shaft of the drive assembly.

[0014] In a possible implementation, the side of the radiator located in the cooling cavity has a plurality of heat dissipation plates, and the plurality of heat dissipation plates are radially distributed on the radiator, and an air passage is formed between adjacent two heat dissipation plates;

[0015] A guide plate is further provided in the cooling cavity, the outer peripheral wall of the guide plate is connected to the inner peripheral wall of the cooling cavity, and the cooling inlet is located between the guide plate and the radiator; a through hole is provided in the middle of the guide plate.

[0016] In a possible implementation, the inner ends of the plurality of heat dissipation plates enclose a gas gathering hole, and the gas gathering hole corresponds to the through hole.

[0017] In a possible implementation, a limiting step for limiting the radiator is provided on the inner peripheral wall of the cooling cavity.

[0018] In a possible implementation, a cable outlet is provided on the outer peripheral wall of the drive cavity, and a cable inlet is provided on the outer peripheral wall of the frequency conversion cavity; the cable of the drive assembly can pass through the cable outlet and the cable inlet and is electrically connected to the frequency conversion module.

[0019] In a possible implementation, a wire groove is provided on the inner peripheral wall of the frequency conversion cavity along the axial direction, and the cable of the drive assembly is located in the wire groove and is electrically connected to the frequency conversion module.

[0020] Compared with the prior art, the mechatronic screw main engine provided by the present utility model integrates the screw and the drive assembly in the housing, which can reduce the axis deviation between the screw and the output shaft of the drive assembly; by integrating the frequency conversion module in the housing and electrically connecting the frequency conversion module with the drive assembly, the manufacturer does not need to assemble the frequency converters and drive motors from different suppliers, and can directly install the integrated main engine of the present application on the air compressor; the frequency conversion module in the integrated screw main engine of the present application designs the circuit according to the parameters of the drive assembly. Therefore, the above setting method of the present application can improve the matching degree between the frequency conversion module and the drive assembly, and reduce the situation that the frequency converter and the drive motor do not match and affect the normal use. Brief Description of the Drawings

[0021] Figure 1 Schematic diagram of the first implementation manner of a mechatronic screw main engine provided by an embodiment of the present utility model;

[0022] Figure 2 Cross-sectional view of the first implementation manner of a mechatronic screw main engine provided by an embodiment of the present utility model;

[0023] Figure 3 For Figure 2 Enlarged schematic view of part A in

[0024] Figure 4 Schematic diagram of the radiator part of a mechatronic screw main engine provided by an embodiment of the present utility model;

[0025] Figure 5 Schematic diagram of the guide plate part of a mechatronic screw main engine provided by an embodiment of the present utility model;

[0026] Figure 6 Schematic diagram of the second implementation manner of a mechatronic screw main engine provided by an embodiment of the present utility model;

[0027] Figure 7 Cross-sectional view of the second implementation manner of a mechatronic screw main engine provided by an embodiment of the present utility model.

[0028] Explanation of the reference numerals: 1, housing; 11, working chamber; 12, drive chamber; 121, cable outlet; 13, frequency conversion chamber; 131, cable inlet; 132, cooling chamber; 133, installation chamber; 134, limiting step; 14, partition board; 15, cooling inlet; 16, cooling outlet; 17, heat dissipation rib plate; 18, arc-shaped baffle; 19, wire trough; 2, screw; 3, drive assembly; 4, frequency conversion module; 41, heat conduction component; 5, air-cooled drive structure; 51, radiator; 511, heat dissipation plate; 52, fan; 53, guide plate; 531, air passing hole; 6, sealing plate. Detailed implementation manners

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] Please refer to Figures 1 to 7 together. Now, a mechatronic screw main engine provided by the present utility model will be described. The mechatronic screw main engine includes a housing 1, and the housing 1 has a working chamber 11, a driving chamber 12 and a frequency conversion chamber 13. Among them, a screw 2 is rotatably arranged in the working chamber 11. A driving assembly 3 is arranged in the driving chamber 12, and the output shaft of the driving assembly 3 is coaxially arranged and connected with the screw 2. A frequency conversion module 4 is arranged in the frequency conversion chamber 13, and the frequency conversion module 4 is electrically connected with the driving assembly 3. In addition, the output shaft of the driving assembly 3 can be integrally arranged with the screw 2.

[0031] Compared with the prior art, the mechatronic screw 2 main engine provided by the present utility model can reduce the axis deviation between the screw 2 and the output shaft of the driving assembly 3 by integrating the screw 2 and the driving assembly 3 in the housing 1. By integrating the frequency conversion module 4 in the housing 1 and electrically connecting the frequency conversion module 4 with the driving assembly 3, the manufacturer does not need to assemble the frequency converter and the driving motor from different suppliers, and the integrated main engine of the present application can be directly installed on the air compressor. The frequency conversion module 4 in the integrated screw 2 main engine of the present application designs the circuit according to the parameters of the driving assembly 3. Therefore, the above setting method of the present application can improve the matching degree between the frequency conversion module 4 and the driving assembly 3, and reduce the situation that the normal use is affected due to the mismatch between the frequency converter and the driving motor. It should be noted that the working principle of the frequency conversion module 4 in the present application is the prior art, and the adaptive design made for the frequency conversion module 4 in the present application is to improve the matching degree between the frequency conversion module 4 and the driving assembly 3. The driving assembly 3 includes a stator and a rotor, and the stator and the rotor are the prior art and will not be described in detail here.

[0032] In some embodiments, as Figures 1 to 7 shown, the working chamber 11, the driving chamber 12 and the frequency conversion chamber 13 are arranged in sequence along the axis direction of the housing 1.

[0033] It should be noted that through the above settings, it is convenient to install each component in the housing 1; the screw 2 in the working chamber 11 is a twin screw 2, and the twin screws 2 mesh with each other; when the output shaft of the drive assembly 3 drives one of the screws 2 to rotate, the other screw 2 follows to rotate, and the gas entering the working chamber 11 is compressed by the volume change in the meshing area of the twin screws 2. The working chamber 11 is provided with an air inlet and an air outlet, and an air inlet valve is provided at the position of the air inlet. The air inlet valve is a prior art and will not be elaborated here.

[0034] In some embodiments, as Figures 1 to 7 shown, a partition 14 is connected between the drive chamber 12 and the frequency conversion chamber 13, and the partition 14 seals the drive chamber 12; the diameter of the frequency conversion chamber 13 is larger than that of the drive chamber 12, the outer peripheral wall of the frequency conversion chamber 13 has a cooling inlet 15, and the end of the frequency conversion chamber 13 has a cooling outlet 16 facing the outer peripheral wall of the drive chamber 12; an air-cooled drive structure 5 is provided in the frequency conversion chamber 13.

[0035] It should be noted that the drive chamber 12 and the working chamber 11 are integrally formed. The drive chamber 12 and the frequency conversion chamber 13 can be integrally formed or connected by bolts. The air-cooled drive structure 5 can provide power to enable external air to enter the frequency conversion chamber 13 from the cooling inlet 15 and discharge from the cooling outlet 16, blowing towards the outer peripheral wall of the drive chamber 12, thereby cooling the drive chamber 12. Through the above method, heat dissipation can be carried out for the frequency conversion module 4 and the drive assembly 3.

[0036] Exemplarily, a plurality of heat dissipation rib plates 17 are provided at intervals on the outer peripheral wall of the drive chamber 12, and each heat dissipation rib plate 17 is arranged along the axis direction of the drive chamber 12; through the above settings, the heat dissipation performance of the drive chamber 12 can be improved. Two arc-shaped baffles 18 are also provided on the outer peripheral wall of the drive chamber 12, and the two arc-shaped baffles 18 surround a plurality of heat dissipation rib plates 17 to form a cooling channel between adjacent heat dissipation rib plates 17, thereby improving the cooling effect on the drive chamber 12. The arc-shaped baffle 18 is connected to the housing 1 by bolts.

[0037] In some embodiments, as Figures 1 to 7 shown, the outer peripheral wall of the drive chamber 12 has a cable outlet 121, and the outer peripheral wall of the frequency conversion chamber 13 has a cable inlet 131; the cable of the drive assembly 3 can pass through the cable outlet 121 and the cable inlet 131 and be electrically connected to the frequency conversion module 4.

[0038] Through the above settings, the partition 14 closes the drive chamber 12, which can improve the waterproof and dustproof level of the drive assembly 3; the cable of the drive assembly 3 passes out from the cable outlet 121, then passes into the cable inlet 131 of the frequency conversion chamber 13 and is electrically connected to the frequency conversion module 4, which can enable the frequency conversion module 4 to control the drive assembly 3.

[0039] In some embodiments, asFigures 1 to 7 As shown, a cooling inlet 15 is provided on the outer peripheral wall of the variable-frequency cavity 13, and a cooling outlet 16 is provided on the outer peripheral wall of the drive cavity 12; an air-cooling drive structure 5 is provided in the variable-frequency cavity 13. There is an air passage between the inner peripheral wall of the drive cavity 12 and the stator of the drive assembly 3, which enables air flow to pass through the drive cavity 12 and finally discharge from the cooling outlet 16.

[0040] It should be noted that by providing power through the air-cooling drive structure 5, external air can enter the variable-frequency cavity 13 from the cooling inlet 15. After the air flow passes through the drive cavity 12, it discharges from the cooling outlet 16 on the drive cavity 12; through the above settings, the variable-frequency module 4 and the drive assembly 3 can be dissipated heat.

[0041] In some embodiments, as Figures 1 to 7 shown, a wire groove 19 is provided on the inner peripheral wall of the variable-frequency cavity 13 along the axial direction. The cable of the drive assembly 3 is located in the wire groove 19 and is electrically connected to the variable-frequency module 4.

[0042] Through the above settings, the cable of the drive assembly 3 is arranged in the housing 1, which can play a role in protecting the cable of the drive assembly 3. After the cable of the drive assembly 3 is connected to the variable-frequency module 4, the connection position between the radiator and the wire groove 19 can be sealed with sealant.

[0043] In some embodiments, as Figures 1 to 7 shown, the air-cooling drive structure 5 includes a radiator 51 and a fan 52; the radiator 51 is connected in the variable-frequency cavity 13; the radiator 51 corresponds to the cooling inlet 15, and the radiator 51 divides the variable-frequency cavity 13 into a cooling cavity 132 and an installation cavity 133; the variable-frequency module 4 is installed in the installation cavity 133, and the variable-frequency module 4 is attached to the radiator 51; the fan 52 is connected to the other end of the output shaft of the drive assembly 3. The variable-frequency module 4 is connected to the radiator 51 through a heat-conducting component 41.

[0044] It should be noted that the fan 52 is installed on the output shaft of the drive assembly 3. While the output shaft drives the screw 2 to rotate, the output shaft can also drive the fan 52 to rotate, so that external air enters the housing 1. The radiator 51 exchanges heat with the variable-frequency module 4, and the air flow takes away the heat of the radiator 51. Therefore, the variable-frequency module 4 can be dissipated heat. After the air flow passes through the radiator 51, it discharges from the cooling outlet 16 on the housing 1, which can cool the drive assembly 3. Through the above cooling method, not only the variable-frequency module 4 can be cooled, but also the drive assembly 3 can be cooled.

[0045] By dividing the variable-frequency cavity 13 into a cooling cavity 132 and an installation cavity 133 through the radiator 51 and installing the variable-frequency module 4 in the installation cavity 133, it can play a role in protecting the variable-frequency module 4, reduce the dust falling on the variable-frequency module 4, and reduce the influence of dust on electrical components.

[0046] In some embodiments, as Figures 1 to 7 shown, the radiator 51 is located on one side of the cooling cavity 132 and has a plurality of heat dissipation plates 511. The plurality of heat dissipation plates 511 are radially distributed on the radiator 51, and an air passage is formed between two adjacent heat dissipation plates 511; a guide plate 53 is further provided in the cooling cavity 132. The outer peripheral wall of the guide plate 53 is connected to the inner peripheral wall of the cooling cavity 132. The cooling inlet 15 is located between the guide plate 53 and the radiator 51; the middle part of the guide plate 53 has an air through hole 531; the inner ends of the plurality of heat dissipation plates 511 surround a gas gathering hole, and the gas gathering hole corresponds to the air through hole 531.

[0047] It should be noted that by providing a plurality of heat dissipation plates 511 on the radiator 51, the heat dissipation performance of the radiator 51 can be improved; by providing a guide plate 53 in the cooling cavity 132, the air entering from the cooling inlet 15 converges to the middle part of the radiator 51 under the guiding action of the guide plate 53, and finally passes through the air through hole 531 in the middle part of the guide plate 53, enters the fan 52 area, and finally is discharged from the cooling outlet 16. Through the above settings, the air flow can flow along the air passage, which is convenient for the air flow to take away the heat on the heat dissipation plates 511 and achieve the purpose of cooling.

[0048] In addition, the housing 1 is provided with set screw holes, and the guide plate 53 and the radiator 51 can be fixed in the housing 1 by set screws.

[0049] In some embodiments, as Figures 1 to 7 shown, the inner peripheral wall of the cooling cavity 132 has a limiting step 134 for limiting the radiator 51.

[0050] It should be noted that by providing the limiting step 134 in the cooling cavity 132, the installation position of the radiator 51 can be limited; one end of the housing 1 in the frequency conversion cavity 13 has a sealing plate 6, and the sealing plate 6 is connected to the housing 1 by bolts; through the above settings, it is convenient to disassemble and assemble the sealing plate 6, and thus it is convenient to install the air-cooled driving structure 5 and the frequency conversion module 4 in the housing 1.

[0051] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electromechanical integrated screw main unit, characterized in that, Comprising: A housing having a working chamber, a driving chamber, and a frequency conversion chamber; Wherein, a screw is rotatably provided in the working chamber; a driving assembly is provided in the driving chamber, and an output shaft of the driving assembly is coaxially arranged and connected with the screw; a frequency conversion module is provided in the frequency conversion chamber, and the frequency conversion module is electrically connected to the driving assembly.

2. The mechatronic screw main engine according to claim 1, characterized in that, The working chamber, the driving chamber, and the frequency conversion chamber are sequentially arranged along the axial direction of the housing.

3. The mechatronic screw main engine according to claim 1, characterized in that, A partition is connected between the driving chamber and the frequency conversion chamber, and the partition seals the driving chamber; the diameter of the frequency conversion chamber is larger than that of the driving chamber, an outer peripheral wall of the frequency conversion chamber has a cooling inlet, and an end of the frequency conversion chamber has a cooling outlet facing the outer peripheral wall of the driving chamber; an air-cooled driving structure is provided in the frequency conversion chamber.

4. An electromechanical integrated screw main engine as described in claim 1, characterized in that, The outer peripheral wall of the frequency conversion chamber has a cooling inlet, and the outer peripheral wall of the driving chamber is provided with a cooling outlet; an air-cooled driving structure is provided in the frequency conversion chamber.

5. An electromechanical integrated screw main unit according to claim 3 or 4, characterized in that, The air-cooled driving structure includes: A radiator connected in the frequency conversion chamber; the radiator corresponds to the cooling inlet, and the radiator divides the frequency conversion chamber into a cooling chamber and an installation chamber; the frequency conversion module is installed in the installation chamber, and the frequency conversion module is attached to the radiator; A fan connected to the other end of the output shaft of the driving assembly.

6. The mechatronic screw main engine according to claim 5, characterized in that, The side of the radiator located in the cooling chamber has a plurality of heat dissipation plates, and the plurality of heat dissipation plates are radially distributed on the radiator, and an air passage is formed between adjacent two of the heat dissipation plates; A guide plate is further provided in the cooling chamber, an outer peripheral wall of the guide plate is connected to an inner peripheral wall of the cooling chamber, and the cooling inlet is located between the guide plate and the radiator; a through hole is provided in the middle of the guide plate.

7. The mechatronic screw main engine according to claim 6, characterized in that, Inner ends of the plurality of heat dissipation plates surround a gas gathering hole, and the gas gathering hole corresponds to the through hole.

8. The mechatronic screw main engine according to claim 6, characterized in that, The inner peripheral wall of the cooling chamber has a limiting step for limiting the radiator.

9. The mechatronic screw main engine according to claim 3, characterized in that, An outer peripheral wall of the driving chamber has a cable outlet, and an outer peripheral wall of the frequency conversion chamber has a cable inlet; a cable of the driving assembly can pass through the cable outlet and the cable inlet and is electrically connected to the frequency conversion module.

10. An electromechanical integrated screw main engine as described in claim 4, characterized in that, A wire groove is provided on an inner peripheral wall of the frequency conversion chamber along the axial direction, and the cable of the driving assembly is located in the wire groove and is electrically connected to the frequency conversion module.

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