Integrated compressor using integrated motor
By designing the oil inlet and oil outlet on the integrated motor, the circulating cooling and filtration of oil is achieved, and the problem of the existing compressor affecting the service life due to grease aging is solved, and the recycling of oil and the long life of bearings is achieved.
Patent Information
- Application Number
- CN202420540350.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-03-20
AI Technical Summary
The existing compressor cannot be replaced in time after the grease has aging, which will affect its service life.
Design an integrated compressor using an integrated motor. By providing an oil inlet and an oil outlet on the integrated motor, the oil is circulated and cooled through the internal motor, and filtered through an oil filter, and connected to the bearing to achieve lubrication and cooling. .
Without disassembling the motor, the recycling of oil is achieved, the service life of bearings and other components is extended, and the overall reliability of the compressor is improved.
Smart Images
Figure CN222457780U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressors, and more specifically to an integrated compressor utilizing an integrated motor. Background Art
[0002] The main function of the motor is to generate driving torque, which serves as the power source for various machines. The compressor is a driven fluid machine that lifts low-pressure gas into high-pressure gas, and is the heart of the refrigeration system. It sucks low-temperature and low-pressure refrigerant gas from the suction pipe, compresses it through the motor, and discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle.
[0003] Existing compressors use oil cooling to cool gears, but do not include bearings. Bearings are cooled separately using grease. Because the position of the gear design is not convenient for maintenance, the disadvantage is that the grease ages but cannot be replaced in time, affecting the service life of the compressor.
[0004] Therefore, how to solve the problem of the service life of the compressor being affected by grease aging is an urgent problem to be solved by those skilled in the art. Utility Model Content
[0005] In view of this, the purpose of the utility model is to provide an integrated compressor using an integrated motor, which can cool itself without disassembling the motor and can be recycled to increase the service life of the product.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] An integrated compressor using an integrated motor, comprising:
[0008] An integrated motor, which is provided with an oil inlet and an oil outlet, a motor main shaft inside the integrated motor, and bearings at both ends of the motor main shaft;
[0009] The compressor is connected to the integrated motor, and is provided with an air inlet and an air outlet. The compressor is also provided with a main oil inlet, which is connected to the oil outlet through an oil circuit, and the oil outlet is connected to the input port of the oil filter, and the output port of the oil filter is connected to the cooling oil circuit, and the cooling oil circuit is connected to the bearing.
[0010] Preferably, the bearing comprises a deep groove ball bearing and a cylindrical roller bearing, the deep groove ball bearing is arranged at an end of the motor main shaft away from the compressor, and the cylindrical roller bearing is arranged at an end of the motor main shaft connected to the compressor.
[0011] Preferably, a shaft seal is provided between the deep groove ball bearing and the cylindrical roller bearing, and the shaft seal is provided on the circumference of the motor main shaft close to the cylindrical roller bearing.
[0012] Preferably, an oil drain port is provided at the bottom of the integrated motor, and an oil drain inlet is provided at the compressor, and the oil drain port is connected to the oil drain inlet through a pipe.
[0013] Preferably, a pressure cover is provided at the end of the deep groove ball bearing, and the pressure cover is pressed on the inner ring of the deep groove ball bearing.
[0014] Preferably, a gear is provided on the circumference of the motor main shaft, and the gear abuts against the cylindrical roller bearing.
[0015] Preferably, a cooling oil circuit inlet is provided on the compressor, the cooling oil circuit inlet is communicated with the cooling oil circuit, and the outlet of the cooling oil circuit is provided between the cylindrical roller bearing and the shaft seal.
[0016] Preferably, the integrated motor and the compressor are connected by bolts.
[0017] Preferably, both ends of the motor main shaft are provided with end covers, and the end cover close to the gear is fixed to the end of the motor main shaft by bolts to achieve axial positioning of the gear.
[0018] Preferably, a gap is left between the end cover close to the deep groove ball bearing and the end face of the deep groove ball bearing, and at least two recessed grooves are provided on the end face of the end cover close to the deep groove ball bearing, and springs are provided in the recessed grooves to abut against the end face of the deep groove ball bearing.
[0019] The utility model provides an integrated compressor using an integrated motor, which comprises an integrated motor and a compressor. Specifically, an oil inlet and an oil outlet are provided on the integrated motor, so that oil flows from the oil inlet to the inside of the integrated motor, goes through a circle to cool the integrated motor, and then flows out from the oil outlet. A motor main shaft is provided in the integrated motor, and bearings are provided at both ends of the motor main shaft. The compressor is connected to the integrated motor, and a power source is provided to the compressor through the integrated motor. An air inlet and an air outlet are provided on the compressor, and low-pressure gas is compressed into high-pressure gas through the compressor. A main oil inlet is also provided on the compressor, and the main oil inlet is connected to the oil outlet through an oil circuit, and the oil outlet is connected to the input port of the oil filter, and the output port of the oil filter is connected to the cooling oil circuit, and the cooling oil circuit is connected to the bearing. When the oil enters the main oil inlet, it passes through the compressor and is divided into the oil outlet. After being filtered by the oil filter, the high-quality lubricating oil after cooling and filtration reaches the bearing, and lubricates and cools the bearing and other components all the time, so as to ensure that the oil can be recycled without disassembling the integrated motor, so as to increase the service life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0021] Figure 1 This is a schematic structural diagram of an integrated compressor using an integrated motor provided by the utility model;
[0022] Figure 2 This is a cross-sectional view of an integrated compressor using an integrated motor provided by the utility model.
[0023] Figure 1-Figure 2 , the reference numerals include:
[0024] 1-integrated motor, 2-oil inlet, 3-oil outlet, 4-motor main shaft, 5-compressor, 6-air inlet, 7-air outlet, 8-main oil inlet, 9-deep groove ball bearing, 10-cylindrical roller bearing, 11-shaft seal, 12-pressure cover, 13-gear. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] The core of the utility model is to provide an integrated compressor using an integrated motor, which can be cooled by itself without disassembling the motor and can be recycled to increase the service life of the product.
[0027] Please refer to Figure 1 and Figure 2 An integrated compressor using an integrated motor includes an integrated motor 1 and a compressor 5.
[0028] Specifically, the integrated motor 1 is provided with an oil inlet 2 and an oil outlet 3, so that the oil flows from the oil inlet 2 to the inside of the integrated motor 1, goes around to cool the integrated motor 1, and then flows out from the oil outlet 3. The integrated motor 1 has a motor main shaft 4, and bearings are provided at both ends of the motor main shaft 4. The compressor 5 is connected to the integrated motor 1, and the compressor 5 is provided with a power source through the integrated motor 1. The compressor 5 is provided with an air inlet 6 and an air outlet 7. The low-pressure gas is compressed into high-pressure gas through the compressor 5. The compressor 5 is also provided with a main oil inlet 8, and the main oil inlet 8 is connected to the oil outlet 3 through an oil circuit. The oil outlet 3 is connected to the input port of the oil filter, and the output port of the oil filter is connected to the cooling oil circuit. The cooling oil circuit is connected to the bearing. When the oil enters the main oil inlet 8, it passes through the compressor 5 and is divided into the oil outlet 3. After filtering by the oil filter, the high-quality lubricating oil after cooling and filtering reaches the bearing, which lubricates and cools the bearing and other components all the time, so as to ensure that the oil can be recycled without disassembling the integrated motor 1, so as to increase the service life of the compressor 5.
[0029] The integrated compressor using the integrated motor configured in the above manner can enhance the life of the bearings of the integrated motor 1 during operation by designing the lubrication oil circuit.
[0030] In the above embodiment, the bearings include a deep groove ball bearing 9 and a cylindrical roller bearing 10 . The deep groove ball bearing 9 is arranged at the end of the motor shaft 4 away from the compressor 5 , and the cylindrical roller bearing 10 is arranged at the end of the motor shaft 4 connected to the compressor 5 .
[0031] It should be noted that two bearings are designed on the motor main shaft 4. The deep groove ball bearing 9 can be easily disassembled and cooled by grease, and the cylindrical roller bearing 10 is cooled and lubricated by a cooling oil circuit, thereby increasing the service life of the cylindrical roller bearing 10.
[0032] Among them, in this embodiment, the bearings on the motor main shaft 4 are arranged in this way, but in actual life, there is no limitation to this, as long as the above-mentioned technical effects can be achieved.
[0033] In the above case, a shaft seal 11 is provided between the deep groove ball bearing 9 and the cylindrical roller bearing 10 , and the shaft seal 11 is provided on the motor main shaft 4 in the circumferential direction close to the cylindrical roller bearing 10 .
[0034] It can be understood that after the oil circuit structure is filtered by the oil filter, the high-quality lubricating oil always lubricates the cylindrical roller bearing 10 and the shaft seal 11, so that the whole machine runs stably and smoothly, thereby ensuring the service life of the compressor 5.
[0035] Furthermore, an oil drain port is provided at the bottom of the integrated motor 1, and an oil drain inlet 2 is provided at the compressor 5, and the oil drain port is connected to the oil drain inlet 2 through a pipe.
[0036] It should be noted that the oil leakage problem of the internal oil seal and the shaft seal 11 is solved by setting an oil drain port at the bottom of the integrated motor 1. The leakage problem can be solved without disassembling the machine. The oil drain port can be connected to the oil pipe to recover the leaked oil into the compressor 5 for reuse.
[0037] Among them, the oil drain port can be opened once a week or once a month to observe whether the integrated motor 1 has oil leakage. If there is oil leakage, a pipe can be added to connect to the oil drain inlet 2 of the compressor 5. When the main unit is running, the oil will be sucked back into the main unit, so it can be recycled without disassembly.
[0038] In the above embodiment, a pressure cover 12 is provided at the end of the deep groove ball bearing 9, and the pressure cover 12 is pressed on the inner ring of the deep groove ball bearing.
[0039] It can be understood that the pressure cover 12 is pressed on the inner ring of the deep groove ball shaft to radially center the motor main shaft 4, improve the dynamic balance of the motor rotor during high-speed operation, reduce the vibration value of the motor and the screw compressor 5 head during operation, and greatly improve the life of the head bearing.
[0040] On the basis of the above embodiment, a gear 13 is provided on the circumference of the motor main shaft 4 , and the gear 13 abuts against the cylindrical roller bearing 10 .
[0041] It should be noted that, because the gear 13 generates an axial thrust, if the force in this direction is not relieved, it will affect the normal operation of the gear 13 in the long term. The integrated motor 1 drives the gear 13 to operate through the middle motor shaft 4. The deep groove ball bearing 9 and the cylindrical roller bearing 10 are designed to increase the radial force of the motor shaft 4. The axial force generated by the operation of the gear 13 is borne and consumed by the deep groove ball bearing 9.
[0042] In the above embodiment, a cooling oil circuit inlet is provided on the compressor 5 , the cooling oil circuit inlet is communicated with the cooling oil circuit, and the outlet of the cooling oil circuit is provided between the cylindrical roller bearing 10 and the shaft seal 11 .
[0043] It can be understood that a main oil inlet 8 is provided on the compressor 5. When the oil enters the main oil inlet 8, it passes through the compressor 5 and is divided into the oil outlet 3. The oil at the oil outlet 3 is cooled and then connected to the inlet of the cooling oil circuit through a pipe. The cooling oil circuit passes through the oil circuit inside the compressor 5 and reaches between the cylindrical roller bearing 10 and the shaft seal 11, which can lubricate and cool the cylindrical roller bearing 10 and lubricate the shaft seal 11.
[0044] Among them, in this embodiment, the cooling oil circuit is arranged in this way, but in actual life, there is no limitation to this, as long as the above-mentioned technical effect can be achieved.
[0045] As a preferred implementation, the integrated motor 1 and the compressor 5 are connected by bolts.
[0046] It should be noted that there is no limitation on the connection method between the integrated motor 1 and the compressor 5 .
[0047] On the basis of the above embodiment, both ends of the motor main shaft 4 are provided with end covers, and the end cover close to the gear 13 is fixed to the end of the motor main shaft 4 by bolts to achieve axial positioning of the gear 13.
[0048] It can be understood that, compared with the existing threaded connection method, arranging bolt connection around the end cover has a more stable effect.
[0049] Furthermore, a gap is left between the end cover close to the deep groove ball bearing 9 and the end face of the deep groove ball bearing 9 , and at least two recessed grooves are provided on the end face of the end cover close to the deep groove ball bearing 9 , and springs are provided in the recessed grooves to abut against the end face of the deep groove ball bearing 9 .
[0050] It should be noted that, by providing a spring, it is possible to prevent the end cover and the deep groove ball bearing 9 from being misaligned when the deep groove ball bearing 9 rotates.
[0051] In summary, the utility model provides an integrated compressor using an integrated motor. Traditional motors are lubricated with grease. After a period of use, the grease will be lost and leaked, causing the bearings to heat up and wear. The oil circuit structure of the present application is filtered by the oil filter so that high-quality lubricating oil can always lubricate the cylindrical roller bearing 10, the shaft seal 11 and the gear 13, so that the whole machine can run stably and smoothly to ensure a reliable life.
[0052] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0053] The above is a detailed introduction to an integrated compressor using an integrated motor provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. An integrated compressor using an integrated motor, characterized in that: include: An integrated motor (1), wherein the integrated motor (1) is provided with an oil inlet (2) and an oil outlet (3), wherein a motor main shaft (4) is provided inside the integrated motor (1), and bearings are provided at both ends of the motor main shaft (4); A compressor (5) is connected to the integrated motor (1); the compressor (5) is provided with an air inlet (6) and an air outlet (7); the compressor (5) is also provided with a main oil inlet (8); the main oil inlet (8) is connected to the oil outlet (3) through an oil circuit; the oil outlet (3) is connected to an input port of an oil filter; the output port of the oil filter is connected to a cooling oil circuit; and the cooling oil circuit is connected to the bearing.
2. The integrated compressor using an integrated motor according to claim 1, characterized in that: The bearing comprises a deep groove ball bearing (9) and a cylindrical roller bearing (10), wherein the deep groove ball bearing (9) is arranged at an end of the motor main shaft (4) away from the compressor (5), and the cylindrical roller bearing (10) is arranged at an end of the motor main shaft (4) connected to the compressor (5).
3. The integrated compressor using an integrated motor according to claim 2, characterized in that: A shaft seal (11) is provided between the deep groove ball bearing (9) and the cylindrical roller bearing (10), and the shaft seal (11) is provided on the circumference of the motor main shaft (4) close to the cylindrical roller bearing (10).
4. The integrated compressor using an integrated motor according to claim 3, characterized in that: The bottom of the integrated motor (1) is provided with an oil drain port, and the compressor (5) is provided with an oil drain inlet, and the oil drain port is connected to the oil drain inlet through a pipe.
5. The integrated compressor using an integrated motor according to claim 4, characterized in that: A pressure cover (12) is provided at the end of the deep groove ball bearing (9), and the pressure cover (12) is pressed on the inner ring of the deep groove ball bearing (9).
6. The integrated compressor using an integrated motor according to claim 5, characterized in that: A gear (13) is provided on the circumference of the motor main shaft (4), and the gear (13) abuts against the cylindrical roller bearing (10).
7. The integrated compressor using an integrated motor according to claim 6, characterized in that: The compressor (5) is provided with a cooling oil circuit inlet, the cooling oil circuit inlet is in communication with the cooling oil circuit, and the cooling oil circuit outlet is provided between the cylindrical roller bearing (10) and the shaft seal (11).
8. The integrated compressor using an integrated motor according to any one of claims 6 to 7, characterized in that: The integrated motor (1) and the compressor (5) are connected via bolts.
9. The integrated compressor using an integrated motor according to claim 8, characterized in that: End covers are provided at both ends of the motor main shaft (4), and the end cover close to the gear (13) is fixed to the end of the motor main shaft (4) by bolts to achieve axial positioning of the gear (13).
10. The integrated compressor using an integrated motor according to claim 9, characterized in that: A gap is left between the end cover close to the deep groove ball bearing (9) and the end face of the deep groove ball bearing (9); at least two recessed grooves are provided on the end face of the end cover close to the deep groove ball bearing (9); and a spring is provided in the recessed groove to abut against the end face of the deep groove ball bearing (9).