Chiller and its control method
A chiller unit and control method technology, applied in the direction of refrigerators, refrigeration components, mechanical equipment, etc., can solve problems such as instability, reduced service life of the unit, and large heat generated by the compressor motor, so as to achieve temperature reduction and meet heat dissipation requirements Effect
Active Publication Date: 2022-03-08
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0003] At present, the magnetic levitation centrifugal unit has been widely used in water-cooled units, and its technology has become mature. The application of the magnetic levitation centrifuge in the air-cooled unit has become the development direction. When the compressor surges, it is in a stall operation state. The bearing will be in an unstable state, and long-term operation will cause damage to the bearing and reduce the service life of the unit; at the same time, because there is no refrigeration oil in the compressor of the maglev unit, part of the heat of the motor can be taken away, and the pressure ratio of the air-cooled maglev unit is large. Under the operating condition of high pressure ratio, the compressor motor generates a lot of heat, so the cooling problem of the motor in the unit also needs to be solved urgently
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[0038] see in conjunction Figure 1 to Figure 2 As shown, according to the embodiment of the present invention, a chiller is provided, including a compressor 1, a condenser 2, a first throttling element 3, and an evaporator 4, and the refrigerant flows through the air outlet of the compressor 1 sequentially. The condenser 2, the first throttling element 3, and the evaporator 4 flow back into the compressor 1 through the air inlet of the compressor 1 to form a refrigerant cycle of the centrifugal unit, and also include a motor cooling pipeline 300, so The motor cooling pipeline 300 can guide the refrigerant flowing out of the condenser 2 to the motor of the compressor 1 and flow back to the air inlet of the compressor 1 through the evaporator 4 . In this technical solution, the motor cooling pipeline guides the refrigerant flowing out of the condenser 2 to the motor of the compressor 1, thereby effectively reducing the temperature of the motor, especially meeting the heat dissi...
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The invention provides a chiller and its control method, wherein the chiller includes a compressor, a condenser, a first throttling element, and an evaporator, and the refrigerant flows through the condenser, the first Throttle element, evaporator, and flow back into the compressor through the air inlet of the compressor to form the refrigerant cycle of the centrifugal unit, and also include a motor cooling pipeline, which can flow out of the condenser The refrigerant is guided to the motor of the compressor and returned to the air inlet of the compressor via the evaporator. According to the present invention, the refrigerant flowing out of the condenser is guided to the motor of the compressor through the motor cooling pipeline, which can effectively reduce the temperature of the motor, and especially meet the heat dissipation requirements of the motor under high pressure ratio operating conditions.
Description
technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a chiller and a control method thereof. Background technique [0002] The magnetic levitation centrifuge unit has many inherent advantages: one is that the product does not use mechanical bearings and has no mechanical friction; the other is that it does not use oil, which completely eliminates the impact of oil on the heat exchange efficiency of the refrigeration system; Together, the efficiency of the maglev centrifuge unit is 35% to 60% higher than that of conventional products. [0003] At present, the magnetic levitation centrifugal unit has been widely used in water-cooled units, and its technology has become mature. The application of the magnetic levitation centrifuge in the air-cooled unit has become the development direction. When the compressor surges, it is in a stall operation state. The bearing will be in an unstable state, and long-term operat...
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IPC IPC(8): F25B41/30F25B41/42F25B49/02H02K9/19
CPCF25B49/02H02K9/19F25B2600/25
Inventor 李顺意黄凯亮钟海玲林少丹
Owner GREE ELECTRIC APPLIANCES INC