US 11,933,526 B2
Compressor and refrigeration device
Bin Gao, Guangdong (CN)
Assigned to GUANGDONG MEIZHI COMPRESSOR CO., LTD., Guangdong (CN)
Filed by GUANGDONG MEIZHI COMPRESSOR CO., LTD., Guangdong (CN)
Filed on Jan. 20, 2021, as Appl. No. 17/153,367.
Application 17/153,367 is a continuation of application No. PCT/CN2018/117592, filed on Nov. 27, 2018.
Claims priority of application No. 201810827208.9 (CN), filed on Jul. 25, 2018; application No. 201810828639.7 (CN), filed on Jul. 25, 2018; application No. 201821192650.0 (CN), filed on Jul. 25, 2018; and application No. 201821192720.2 (CN), filed on Jul. 25, 2018.
Prior Publication US 2021/0164712 A1, Jun. 3, 2021
Int. Cl. F25B 41/26 (2021.01); F25B 13/00 (2006.01); F25B 49/02 (2006.01)
CPC F25B 41/26 (2021.01) [F25B 13/00 (2013.01); F25B 49/02 (2013.01); F25B 2400/0401 (2013.01); F25B 2500/26 (2013.01); F25B 2600/2501 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A compressor comprising:
a sealing container;
a motor portion and a compressing mechanism portion, both provided in the sealing container; and
a bypass valve;
wherein the compressor comprises an exhaust side and a suction side spaced apart from each other, the exhaust side is connected to the bypass valve, and the exhaust side is configured to exhaust air to external parts through the bypass valve or communicate with the suction side through the bypass valve,
wherein the bypass valve comprises
a valve body defining a valve cavity, the valve body comprising a plurality of ports in communication with the valve cavity, and the plurality of ports being configured to be connected to the exhaust side, the suction side and the external parts respectively; and
a valve core movably provided in the valve body and having at least one flow passage, the plurality of ports being selectively communicated with one another through the at least one flow passage, and
wherein:
the plurality of ports comprise a first port, a second port and a third port;
the first port is selectively communicated with only one of the second port and the third port;
the first port is communicated with the exhaust side;
the third port is communicated with the suction side; and
the exhaust side is configured to exhaust air to the external parts through the second port,
wherein:
the bypass valve has a first state, a second state and a third state; and
in the first state, the exhaust side is communicated with the external parts through the bypass valve and disconnected from the suction side, in the second state, the exhaust side is disconnected from the external parts and communicated with the suction side through the bypass valve, and in the third state, the exhaust side is disconnected from the external parts and the suction side, and
wherein:
the compressor is configured, such that the bypass valve is switched from the first state to the second state when the motor portion is stopped from an operating state;
the compressor is configured, such that the bypass valve is switched from the second state to the third state when the motor portion is started from a stopped state; and
when P1 is greater than or equal to P2, the bypass valve is switched to the first state, and when the P1 is less than the P2, the bypass valve remains in the third state when the motor portion is not stopped, and is switched to the second state when the motor portion is stopped, wherein the P1 is a pressure at a first port, and the P2 is a pressure at a second port.