CN212033947U

CN212033947U - Evaporative cooling motor

Info

Publication number: CN212033947U
Application number: CN202020791893.7U
Authority: CN
Inventors: 陈川; 徐典友; 聂大金; 袁刚强; 凌国宇
Original assignee: Chengdu Huachuan Electric Parts Co Ltd
Current assignee: Chengdu Huachuan Electric Parts Co Ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-11-27
Anticipated expiration: 2030-05-13

Abstract

The utility model provides an evaporation cooling motor that cooling effect is better. An evaporative cooling motor comprises a shell, a stator and end covers arranged at two ends of the shell; the stator is installed in the cavity of casing, the casing top is equipped with refrigerant input chamber and refrigerant output chamber, the refrigerant input chamber is equipped with the refrigerant input tube, refrigerant output chamber top is equipped with the blast pipe, be equipped with the evaporating coil who surrounds this casing cavity on the casing, evaporating coil one end with refrigerant input chamber intercommunication, the other end with refrigerant output chamber intercommunication. The motor adopting the structure has longer service life.

Description

Evaporative cooling motor

Technical Field

The utility model relates to the technical field of motors, in particular to evaporative cooling motor.

Background

The common cooling modes of the motor include an air cooling mode and a circulating liquid cooling mode. Since the liquid has a greater specific heat and thermal conductivity than the gas, the cooling efficiency of the circulating liquid cooling is higher than that of air cooling. However, for a large motor with high power, the heating value is large, and the circulating liquid cooling also has the condition of poor cooling effect, so that the service life of the motor is reduced.

Evaporative cycle cooling techniques are mainly used in the air conditioning field, and in the electric machine field, their use is less. The evaporation circulation cooling has stronger heat absorption heat in vaporization, has smaller heat exchange area than liquid cooling under the same heat exchange condition, and takes away heat through medium evaporation heat absorption, so that the cooling efficiency of the evaporation circulation cooling is higher than that of the liquid cooling circulation cooling.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an evaporation cooling motor that cooling effect is better is provided.

The utility model provides a technical scheme that its technical problem adopted is: an evaporative cooling motor comprises a shell, a stator and end covers arranged at two ends of the shell; the stator is installed in the cavity of casing, the casing top is equipped with refrigerant input chamber and refrigerant output chamber, the refrigerant input chamber is equipped with the refrigerant input tube, refrigerant output chamber top is equipped with the blast pipe, be equipped with the evaporating coil who surrounds this casing cavity on the casing, evaporating coil one end with refrigerant input chamber intercommunication, the other end with refrigerant output chamber intercommunication.

Further, the evaporation coil is buried in the casing.

Further, the evaporation coil is a copper pipe.

Furthermore, an evaporation tube is embedded in the inner wall of the end cover, one end of the evaporation tube is communicated with the refrigerant input cavity, and the other end of the evaporation tube is communicated with the refrigerant output cavity.

Further, the evaporation tube is a copper tube.

Furthermore, the outlets of the evaporation pipe and the evaporation coil are both provided with one-way valves.

Further, the device also comprises a gas-liquid separator, a condenser, a compressor and a throttle valve; the exhaust pipe is connected with the air inlet end of the compressor after passing through the gas-liquid separator, and the refrigerant input pipe is connected with the liquid outlet end of the compressor after sequentially passing through the throttle valve and the condenser.

The utility model has the advantages that: this motor passes through to set up evaporating coil on the casing, and the heat of stator copper line passes through stator core transmission to the casing, and the casing forms the evaporation tank, and cold medium matter evaporates in the evaporating coil in the casing, and liquid refrigerant evaporation becomes gaseous state refrigerant to take away a large amount of heats on the conch wall, improved cooling efficiency. The motor adopting the structure has longer service life.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic perspective view of the present invention;

fig. 3 is a schematic structural view of the end cap of the present invention;

shown in the figure: the air conditioner comprises a machine shell 1, an end cover 2, a stator 3, a rotor 4, a separator 5, a condenser 7, a compressor 6, a throttle valve 8, a refrigerant input cavity 11, a refrigerant output cavity 12, an evaporation coil 13, an evaporation pipe 14, a refrigerant input pipe 15 and an exhaust pipe 16.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1 and fig. 2, the evaporation cooling motor of the present invention includes a casing 1, a stator 3, a rotor 4 and end covers 2 disposed at two ends of the casing 1. The stator 3 is mounted in a cavity of the housing 1. The improved air conditioner casing is characterized in that a refrigerant input cavity 11 and a refrigerant output cavity 12 are formed in the top of the casing 1, a refrigerant input pipe 15 is arranged in the refrigerant input cavity 11, an exhaust pipe 16 is arranged at the top of the refrigerant output cavity 12, an evaporation coil 13 surrounding the casing cavity is arranged on the casing 1, one end of the evaporation coil 13 is communicated with the refrigerant input cavity 11, and the other end of the evaporation coil is communicated with the refrigerant output cavity 12.

Wherein, evaporating coil 13 can adopt the mode of inlaying at casing 1 inner wall recess to set up on casing 1, but the area of contact between evaporating coil 13 and the casing 1 of this kind of mode is less, and this influences heat transfer between the two, can reduce motor cooling efficiency. In order to improve the cooling efficiency, the utility model discloses a bury evaporating coil 13 underground in casing 1 to make evaporating coil 13 and casing 1 form a whole. This mode not only can increase cooling efficiency, can also reduce the machining volume to the casing. This mode can set up evaporating coil 13 in the casing casting mould when casting casing 1 to the realization is to evaporating coil 13's pre-buried setting.

When in use, the motor is connected into an external cooling circulation system (compressor). The cooling circulation system flows the gas-liquid mixed phase refrigerant into the refrigerant input cavity 11 through the refrigerant input pipe 15, and the refrigerant input cavity 11 can be used as a mixing chamber to fully mix the gas-liquid two-phase refrigerant and then flow into the evaporation coil 13. The heat that the motor operation was gived off passes through the casing transmission, forms the evaporation environment in motor inside, and the heat that the motor gived off is taken away in the evaporation heat absorption of cold medium matter in the evaporating coil 13 that surrounds the stator to form low temperature low pressure gas flow in the pipeline and flow to refrigerant output cavity 12. Because the refrigerant output cavity 12 has a certain size and volume, the flow rate of the refrigerant medium is reduced after entering the refrigerant output cavity 12, part of liquid is deposited at the bottom, gas-liquid gravity separation is generated, and gas flows back to the compressor through the exhaust pipe 16 at the top of the refrigerant output cavity 12. This motor passes through to set up evaporating coil on the casing, and the heat of stator copper line passes through stator core transmission to the casing, and the casing forms the evaporation tank, and cold medium matter evaporates in the evaporating coil in the casing, and liquid refrigerant evaporation becomes gaseous state refrigerant to take away a large amount of heats on the conch wall, improved cooling efficiency.

The copper pipe has a higher thermal conductivity than other metal pipes at the same wall thickness, and therefore, the copper pipe is preferably used for the evaporating coil 13.

As shown in fig. 1 and 3, the end cap 2 of the motor of the present invention is inlaid with an evaporating pipe 14, one end of the evaporating pipe 14 is communicated with the refrigerant input cavity 11, and the other end is communicated with the refrigerant output cavity 12. In this way, a part of the heat in the cavity inside the casing can be taken away through the evaporation tube 14, so that the cooling efficiency can be further improved. The evaporator tube 14 is also preferably a copper tube.

Because the evaporating pipes 14 of the front end cover and the rear end cover are mainly in contact with the air inside the motor in the actual use process, and the evaporating coil 13 in the shell is in wall contact, the evaporating heat exchange efficiency of each pipeline is different, the cold medium in the pipeline can not be completely evaporated, and the pipeline can possibly generate backflow to cause a liquid impact phenomenon. To avoid this, the outlets of the evaporator tubes 14 and the evaporator coils 13 are provided with check valves (not shown).

In fig. 1, the motor casing 1 is further provided with a gas-liquid separator 5, a condenser 7, a compressor 6 and a throttle valve 8. The exhaust pipe 16 is connected with the gas inlet end of the compressor 6 after passing through the gas-liquid separator 5, and the refrigerant input pipe 15 is connected with the liquid outlet end of the compressor 6 after sequentially passing through the throttle valve 8 and the condenser 7. I.e. the cooling circulation system is integrated on the electric machine.

Claims

1. An evaporative cooling motor comprises a shell (1), a stator (3) and end covers (2) arranged at two ends of the shell (1); stator (3) install in the cavity of casing (1), its characterized in that: the improved air conditioner is characterized in that a refrigerant input cavity (11) and a refrigerant output cavity (12) are formed in the top of the machine shell (1), a refrigerant input pipe (15) is arranged in the refrigerant input cavity (11), an exhaust pipe (16) is arranged at the top of the refrigerant output cavity (12), an evaporation coil (13) surrounding the machine shell cavity is arranged on the machine shell (1), one end of the evaporation coil (13) is communicated with the refrigerant input cavity (11), and the other end of the evaporation coil is communicated with the refrigerant output cavity (12).

2. An evaporative cooling electric machine as recited in claim 1, wherein: the evaporation coil (13) is embedded in the shell (1).

3. An evaporative cooling electric machine as recited in claim 2, wherein: the evaporation coil (13) is a copper pipe.

4. An evaporative cooling electric machine as recited in claim 1, wherein: an evaporation pipe (14) is inlaid in the inner wall of the end cover (2), one end of the evaporation pipe (14) is communicated with the refrigerant input cavity (11), and the other end of the evaporation pipe is communicated with the refrigerant output cavity (12).

5. An evaporative cooling electric machine as recited in claim 4, wherein: the evaporation tube (14) is a copper tube.

6. An evaporative cooling electric machine as recited in claim 4, wherein: and one-way valves are arranged at the outlets of the evaporation pipe (14) and the evaporation coil (13).

7. An evaporative cooling electric machine as recited in claim 1, wherein: the device also comprises a gas-liquid separator (5), a condenser (7), a compressor (6) and a throttle valve (8); the exhaust pipe (16) is connected with the air inlet end of the compressor (6) after passing through the gas-liquid separator (5), and the refrigerant input pipe (15) is connected with the liquid outlet end of the compressor (6) after sequentially passing through the throttle valve (8) and the condenser (7).