Motor cooling system

Abstract

The invention discloses a motor cooling system which comprises a motor and a cold source supply mechanism, the cold source supply mechanism is communicated with an air distribution mechanism, the air distribution mechanism is connected with a shell of the motor, and the shell is provided with an air inlet nozzle allowing a cold source to flow into an inner cavity and an air outlet nozzle allowing the cold source to flow out of the inner cavity; a first circulation channel pipe fitting for cold source reciprocating circulation is constructed between the cold source supply mechanism and the gas distribution mechanism; and a second circulating channel pipe fitting for reciprocating circulation of the cold source is constructed between the air distribution mechanism and the shell of the motor. The interior of the motor is rapidly and effectively cooled through the cold source, the cooling process is stable and controllable, the air distribution mechanism can provide a plurality of cold source interfaces, different motor cooling requirements of multiple working conditions can be met, cooling transformation can be completed only by forming an air inlet nozzle and an air outlet nozzle in an existing motor, the universality is high, the transformation cost is low, and the application range is wide. And the operation of the motor is not influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of motor cooling, and in particular to a motor cooling system. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy. Specifically, it converts electrical energy into mechanical energy through the principle of electromagnetic induction and the force exerted on a current-carrying conductor in a magnetic field.

[0003] Heat is generated inside the motor due to overload (exceeding the rated load), mechanical failure (bearing wear, rotor eccentricity), and other factors. When the motor's cooling system is unable to fully dissipate this internal heat, the motor's internal temperature rises. Excessive internal temperature rise accelerates insulation aging (potentially causing short circuits or leakage), increases winding resistance, and leads to decreased efficiency and increased energy consumption. It can also weaken lubrication performance and increase bearing wear. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a motor cooling system to solve the problems that the internal temperature of the existing motor is too high, which affects the motor life and has poor operating safety and reliability.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A motor cooling system comprises a motor, a cold source supply mechanism and an air distribution mechanism, wherein the cold source supply mechanism is connected to the air distribution mechanism, and the air distribution mechanism is used to communicate with the inner cavity of the motor; Among them, the cold source supply mechanism is connected to the air distribution mechanism through the first circulation channel pipe, which is used to maintain the cold source temperature in the air distribution mechanism. The air distribution mechanism is connected to the inner cavity of the motor through the second circulation channel pipe, which is used to maintain the cold source temperature in the inner cavity of the motor.

[0006] As an optimization, the cold source supply mechanism includes a refrigerator for providing a cold source, and the air distribution mechanism includes an air distribution box, which is provided with a plurality of air chambers isolated from each other. The air distribution box is provided with a first pipeline interface and a second pipeline interface for connecting with the first circulation channel pipe fitting at the position corresponding to each air chamber, as well as a third pipeline interface and a fourth pipeline interface for connecting with the second circulation channel pipe fitting; an air bag for storing a cold source is installed inside each of the air chambers, and the air bag is simultaneously connected to the first pipeline interface, the second pipeline interface, the third pipeline interface, and the fourth pipeline interface of the corresponding air chamber.

[0007] As an optimization, the motor includes a shell, which is provided with an air inlet nozzle for the cooling source to flow into the inner cavity and an exhaust nozzle for the cooling source to flow out of the inner cavity, and the air inlet nozzle and the exhaust nozzle are respectively connected to the air distribution mechanism.

[0008] As an optimization, the first circulation channel pipe includes a cold source outflow pipeline and a cold source inflow pipeline, one end of the cold source outflow pipeline is connected to the outlet of the refrigerator, one end of the cold source inflow pipeline is connected to the inlet of the refrigerator, and the other end of the cold source outflow pipeline is connected to the other end of the cold source inflow pipeline; It also includes a first circulation inflow pipe and a first circulation outflow pipe, one end of the first circulation inflow pipe is connected to the first pipeline interface, and the other end is connected to the cold source outflow pipeline, one end of the first circulation outflow pipe is connected to the second pipeline structure, and the other end is connected to the cold source inflow pipeline.

[0009] As an optimization, the second circulation channel pipe includes a second circulation outflow pipe and a second circulation inflow pipe, one end of the second circulation outflow pipe is connected to the third pipeline interface, and the other end is connected to the air inlet nozzle of the shell, one end of the second circulation inflow pipe is connected to the fourth pipeline interface, and the other end is connected to the exhaust nozzle of the shell.

[0010] As an optimization, gas-water separators are provided on both the cold source outflow pipeline and the cold source inflow pipeline.

[0011] As an optimization, a first temperature sensor is provided in the inner cavity of the motor; and a second temperature sensor is provided in the airbag.

[0012] As an optimization, a main control valve is further provided on the cold source outflow pipeline near the refrigerator; The first circulation inflow pipe and the first circulation outflow pipe are both provided with electric control valves for controlling on and off, and the electric control valves constitute a first valve set.

[0013] The second circulation outflow pipe and the second circulation inflow pipe are both provided with regulating valves for regulating gas flow rate and flow rate, and the regulating valves constitute a second valve set.

[0014] As an optimization, the airbag is also connected to a pressure gauge, and the reading end of the pressure gauge is located outside the air box.

[0015] As an optimization, threads are provided on the circumferential outer walls of the air inlet nozzle and the exhaust nozzle, filters are installed in the inner cavities of the air inlet nozzle and the exhaust nozzle, the air inlet nozzle and the exhaust nozzle are connected to the adapter via threads, and the adapter is provided with air holes.

[0016] Compared with the prior art, this application has the following beneficial effects: The present invention, The cooling source can achieve rapid and effective cooling inside the motor, avoiding excessive internal temperature of the motor, which is beneficial to prolonging the motor life and increasing the safety and reliability of operation; the cooling process is stable and controllable; and the air distribution mechanism can provide multiple cooling source interfaces to adapt to the cooling needs of motors with different working conditions; existing motors only need to open air inlet and exhaust nozzles to complete the cooling modification, which has high universality, low modification cost, and does not affect the operation of the motor itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic structural diagram of a cold source supply mechanism in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the air distribution mechanism in an embodiment of the present invention; Figure 4 A schematic structural diagram of a motor in an embodiment of the present invention; Figure 5 For the embodiment of the present invention Figure 4 A partial enlarged view of point A in the middle; In the picture: 1. Cold source supply mechanism; 11. Refrigerator; 12. Cold source outflow pipeline; 13. Cold source inflow pipeline; 14. Main control valve; 15. Gas-water separator; 2. Air distribution mechanism; 21. Air distribution box; 22. Air bag; 23. First circulation inflow pipe; 24. Electric control valve; 25. First circulation outflow pipe; 26. Air pressure gauge; 27. Second circulation outflow pipe; 28. Second circulation inflow pipe; 29. ​​Regulating valve; 3. Motor; 31. Housing; 311. Air inlet nozzle; 312. Exhaust nozzle; 32. Filter; 33. Adapter; 331. Air hole. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings.

[0019] Specific implementation: see Figure 1-Figure 5 , In one embodiment, a motor cooling system includes a motor 3 and a cold source supply mechanism 1. The cold source supply mechanism 1 is connected to an air distribution mechanism 2. The air distribution mechanism 2 is connected to a housing 31 of the motor 3. The housing 31 is provided with an air inlet nozzle 311 for supplying cold source to an inner cavity and an air outlet nozzle 312 for supplying cold source to an inner cavity. A first circulation channel pipe for reciprocating circulation of the cold source is constructed between the cold source supply mechanism 1 and the air distribution mechanism 2, and a first valve assembly for controlling on and off is provided on the first circulation channel pipe; A second circulation channel pipe for reciprocating circulation of the cold source is constructed between the air distribution mechanism 2 and the housing 31 of the motor 3, and a second valve set for controlling on and off is provided on the second circulation channel pipe.

[0020] In this embodiment, the cold source supply mechanism 1 provides a cold source for cooling, and the air distribution mechanism 2 distributes the cold source from the cold source supply mechanism 1 to provide multiple independent cold source interfaces for cooling the motors 3 under different working conditions. The cold source enters the housing 31 through the air inlet nozzle 311, thereby cooling the motor 3. After the cold source completes heat exchange and the temperature of the motor 3 drops, the cold source flows out from the exhaust nozzle 312, carrying away the heat. When the motor 3 needs to be cooled, the circulation of the second circulation channel pipe is opened to continuously remove the internal heat of the motor 3; When the temperature of the cold source in the air distribution mechanism 2 rises due to the heat of the motor, the circulation of the first circulation channel pipe is opened to cool the cold source that is not enough to bear the cooling effect; The present invention realizes rapid and effective cooling of the inside of the motor 3 through a cold source. The cooling process is stable and controllable. The air distribution mechanism 2 can provide multiple cold source interfaces, which can adapt to the cooling requirements of motors with different working conditions. The existing motor only needs to open an air inlet nozzle 311 and an exhaust nozzle 312 to complete the cooling modification. It has high universality, low modification cost, and does not affect the operation of the motor itself.

[0021] Preferably, a first temperature sensor is provided inside the motor 3. With this structural design, the temperature inside the motor 3 is detected by the first temperature sensor. When the internal temperature rises too high, a cold source is introduced to lower the temperature of the motor 3. When the internal temperature is within a safe range, the cold source is turned off to avoid energy consumption.

[0022] Preferably, the cold source supply mechanism 1 includes a refrigerator 11, a cold source outflow pipeline 12 connected to the outlet of the refrigerator 11, and a cold source inflow pipeline 13 connected to the inlet of the refrigerator 11. The cold source outflow pipeline 12 and the cold source inflow pipeline 13 are connected, and a gas-water separator 15 is provided on each of the cold source outflow pipeline 12 and the cold source inflow pipeline 13. With this structural design, the cold source is air. After the refrigerator 11 cools the air, it is discharged through the cold source outflow pipeline 12 and then flows back through the cold source inflow pipeline 13. The gas-water separator 15 can separate the water in the air to prevent the water from entering the motor 3 and causing the motor 3 to malfunction. The refrigerator is a conventional device and can be a traditional vapor compression refrigeration cycle refrigerator, such as air conditioning equipment. Its core is based on the state change (liquid <-> gas) and pressure change of the refrigerant in a closed system to absorb and release heat. Its specific structure and refrigeration principle will not be described in detail.

[0023] Preferably, a control main valve 14 is also provided near the position of the cold source outflow pipeline 12 near the refrigerator 11. With such a structural design, the control main valve 14 is used to control whether the cold source can flow out. When a subsequent device fails, the control main valve 14 can be closed to prevent the cold source from flowing out, thereby facilitating the maintenance of subsequent equipment.

[0024] Preferably, the air distribution mechanism 2 includes an air distribution box 21, which is provided with a plurality of air chambers isolated from each other. The air distribution box 21 is provided with a first pipeline interface, a second pipeline interface, a third pipeline interface, and a fourth pipeline interface at a position corresponding to each air chamber. An air bag 22 for storing a cold source is installed inside each air chamber. The air bag 22 is simultaneously connected to the first pipeline interface, the second pipeline interface, the third pipeline interface, and the fourth pipeline interface of the corresponding air chamber. The first pipeline interface is connected to the first circulation inflow pipe 23, the second pipeline interface is connected to the first circulation outflow pipe 25, and the first circulation outflow pipe 26 is connected to the first circulation outflow pipe 27. The other end of the inlet pipe 23 is connected to the cold source outflow pipeline 12, the first circulation outflow pipe 25 is connected to the cold source inflow pipeline 13, the third pipeline interface is connected to the second circulation outflow pipe 27, the fourth pipeline interface is connected to the second circulation inflow pipe 28, the second circulation outflow pipe 27 is connected to the air inlet nozzle 311 of the shell 31, and the second circulation inflow pipe 28 is connected to the exhaust nozzle 312 of the shell 31. With such a structural design, the air box 21 is provided with multiple air chambers, and the reason for arranging air bags 22 in each air chamber is that each air bag 22 can correspond to a motor, realizing multiple Independent control of the cooling of each motor, because not the temperature of each motor is the same, so in the face of multi-motor cooling needs, it is necessary to use independently designed air bags to meet the cooling needs of different motors. The first pipeline interface, the second pipeline interface, the third pipeline interface, and the fourth pipeline interface are set to facilitate the direct connection of the external line with the air bag 22 in the air chamber. When the cold source circulation of the first circulation channel pipe is carried out, the cold source flows from the cold source outflow pipeline 12 to the first circulation inflow pipe 23, and enters the air bag 22, and is temporarily stored in the air bag 22. When When the temperature of the cold source in the airbag 22 has risen and is not enough to complete the cooling task, the cold source flows out from the first circulation outlet pipe 25 and enters the cold source inflow pipeline 13, and returns to the refrigerator 11 for cooling and cooling. When the motor needs to be cooled, the cold source circulation of the second circulation channel pipe will be carried out at this time. The cold source flows out from the second circulation outlet pipe 27 and flows into the interior of the motor through the air inlet nozzle 311 of the shell 31 to cool the motor. After completing the heat exchange, the cold source flows to the second circulation inflow pipe 28 through the exhaust nozzle 312 of the shell 31 and returns to the airbag 22.

[0025] Preferably, an electric-controlled valve 24 for controlling the on-off is provided on both the circulation inlet pipe 23 and the circulation outlet pipe 25, and the electric-controlled valve 24 constitutes a first valve set. With such a structural design, whether the first circulation is opened is controlled by the electric-controlled valve 24. At the same time, when the electric-controlled valve 24 on the circulation inlet pipe 23 is opened and the electric-controlled valve 24 on the circulation outlet pipe 25 is closed, the air bag 22 can also store air. On the contrary, the air bag 22 can be deflated.

[0026] Preferably, regulating valves 29 for regulating the gas flow rate and flow are provided on the second circulation outflow pipe 27 and the second circulation inflow pipe 28. The regulating valves 29 constitute a second valve set. With such a structural design, the regulating valves 29 are used to control whether the second circulation is opened. At the same time, the regulating valves 29 can also control the flow rate and flow velocity of the cold source to meet different cooling requirements.

[0027] Preferably, the airbag 22 is also connected to a pressure gauge 26, and the reading end of the pressure gauge 26 is located outside the air distribution box 21. With this structural design, the pressure gauge 26 is used to monitor the internal air pressure of the airbag 22 to determine whether there is enough cold source to fill it.

[0028] Preferably, threads are provided on the circumferential outer walls of the air inlet nozzle 311 and the exhaust nozzle 312, and a filter 32 is installed in the inner cavity of the air inlet nozzle 311 and the exhaust nozzle 312. The air inlet nozzle 311 and the exhaust nozzle 312 are connected to the adapter 33 through threads, and the adapter 33 is provided with an air hole 331. With such a structural design, the threaded form facilitates the installation of the adapter 33, and the filter 32 can prevent impurities from entering the motor and causing safety accidents.

[0029] Preferably, the airbag 22 is connected to a second temperature sensor. With such a structural design, the second temperature sensor is used to monitor whether the temperature of the cold source inside the airbag 22 can still meet the cooling demand. If it cannot be met, the first cycle should be started to supplement the cold source with a lower temperature, and send the cold source with a higher temperature back to the refrigerator 11 for cooling.

[0030] Although the embodiments of the present invention have been shown and described, it is apparent to those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and basis of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Therefore, the embodiments of the present invention are merely illustrative examples of the present invention. No matter from which point of view, the embodiments of the present invention do not constitute a limitation on the present invention.

Claims

1. A motor cooling system, characterized by: It comprises a motor, a cold source supply mechanism (1) and an air distribution mechanism (2), wherein the cold source supply mechanism (1) is connected to the air distribution mechanism (2), and the air distribution mechanism (2) is connected to the inner cavity of the motor (3); The cold source supply mechanism (1) is connected to the air distribution mechanism (2) via a first circulation channel pipe, and is used to maintain the temperature of the cold source in the air distribution mechanism; the air distribution mechanism (2) is connected to the inner cavity of the motor (3) via a second circulation channel pipe, and is used to maintain the temperature of the cold source in the inner cavity of the motor.

2. The motor cooling system according to claim 1, characterized in that: The cold source supply mechanism (1) includes a refrigerator (11) for providing a cold source, and the air distribution mechanism (2) includes an air distribution box (21), wherein the air distribution box (21) is provided with a plurality of mutually isolated air chambers, and the air distribution box (21) is provided with a first pipeline interface and a second pipeline interface for connecting with a first circulation channel pipe fitting, and a third pipeline interface and a fourth pipeline interface for connecting with a second circulation channel pipe fitting at a position corresponding to each air chamber; an air bag (22) for storing a cold source is installed inside each air chamber, and the air bag (22) is simultaneously connected to the first pipeline interface, the second pipeline interface, the third pipeline interface, and the fourth pipeline interface of the corresponding air chamber.

3. The motor cooling system according to claim 2, characterized in that: The motor comprises a housing (31), the housing (31) being provided with an air inlet nozzle (311) for a cooling source to flow into an inner cavity and an air outlet nozzle (312) for a cooling source to flow out of the inner cavity, the air inlet nozzle and the air outlet nozzle being respectively connected to an air distribution mechanism.

4. The motor cooling system according to claim 3, characterized in that: The first circulation channel pipe comprises a cold source outflow pipeline (12) and a cold source inflow pipeline (13), one end of the cold source outflow pipeline is connected to the outlet of the refrigerator (11), one end of the cold source inflow pipeline is connected to the inlet of the refrigerator (11), and the other end of the cold source outflow pipeline is connected to the other end of the cold source inflow pipeline; It also includes a first circulation inflow pipe (23) and a first circulation outflow pipe (25), one end of the first circulation inflow pipe (23) is connected to the first pipeline interface, and the other end is connected to the cold source outflow pipeline (12), one end of the first circulation outflow pipe is connected to the second pipeline structure, and the other end is connected to the cold source inflow pipeline (13).

5. The motor cooling system according to claim 3, characterized in that: The second circulation channel pipe comprises a second circulation outflow pipe (27) and a second circulation inflow pipe (28), one end of the second circulation outflow pipe is connected to the third pipeline interface, and the other end is connected to the air inlet nozzle of the shell, and one end of the second circulation inflow pipe is connected to the fourth pipeline interface, and the other end is connected to the exhaust nozzle of the shell.

6. The motor cooling system according to claim 3, characterized in that: A gas-water separator (15) is provided on both the cold source outflow pipeline (12) and the cold source inflow pipeline (13).

7. The motor cooling system according to claim 3, characterized in that: A first temperature sensor is provided in the inner cavity of the motor (3); and a second temperature sensor is provided in the airbag (22).

8. The motor cooling system according to claim 3, characterized in that: A main control valve (14) is also provided at a position of the cold source outflow pipeline (12) close to the refrigerator (11); The first circulation inflow pipe (23) and the first circulation outflow pipe (25) are both provided with electric control valves (24) for controlling on and off, and the electric control valves (24) constitute a first valve set; The second circulation outflow pipe (27) and the second circulation inflow pipe (28) are both provided with regulating valves (29) for regulating the gas flow rate and flow rate, and the regulating valves (29) constitute a second valve set.

9. The motor cooling system according to claim 3, characterized in that: The air bag (22) is also connected to a pressure gauge (26), and the reading end of the pressure gauge (26) is located outside the air box (21).

10. The motor cooling system according to claim 3, characterized in that: The circumferential outer walls of the air inlet nozzle (311) and the exhaust nozzle (312) are both provided with threads, and filter screens (32) are installed in the inner cavities of the air inlet nozzle (311) and the exhaust nozzle (312). The air inlet nozzle (311) and the exhaust nozzle (312) are connected to an adapter (33) via threads, and the adapter (33) is provided with an air hole (331).

Images