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US 12,546,519 B2Granted
Cooling device
AssigneeHuawei Digital Power Technologies Co., Ltd.
InventorsSviataslau Alehavich Filatau, Jun Chen
Life of this patent
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Abstract
A cooling device is provided, which comprises a cooling circuit comprising an evaporator and a compressor connected to the evaporator by a first fluid line of the cooling circuit, wherein the compressor is adapted to compress cooling agent in the cooling circuit during an active cooling mode, wherein the compressed cooling agent contains lubricant oil from the compressor. The cooling circuit comprises a condenser, which is connected to the compressor by a second fluid line of the cooling circuit. The second fluid line is connected to a fluid by-pass line of the cooling circuit by a separating portion, and wherein the separating portion is adapted to physically separate lubricant oil from the compressed cooling agent, so that the lubricant oil is collected in the fluid by-pass line.
Claims25
A cooling device, comprising:
- a cooling circuit, the cooling circuit comprising:
- an evaporator;
- a compressor, which is connected to the evaporator by a first fluid line of the cooling circuit, wherein the compressor is adapted to compress a cooling agent present in the cooling circuit during an active cooling mode, wherein the compressed cooling agent contains lubricant oil from the compressor;
- a condenser, which is connected to the compressor by a second fluid line of the cooling circuit;
- and
- a fluid by-pass line, which connects the first fluid line with the second fluid line,
- wherein the fluid by-pass line comprises a by-pass valve, which is configured to at least partially close the fluid by-pass line in the active cooling mode,
- wherein the second fluid line is connected to the fluid by-pass line by a separator, and wherein the separator is configured to physically separate lubricant oil from the compressed cooling agent, so that the lubricant oil is collected in the fluid by-pass line,
- wherein at the separator, an end portion of the second fluid line is inserted into the interior of the fluid by-pass line,
- wherein the fluid by-pass line is oriented vertically in the cooling device,
- wherein compressed gaseous cooling agent containing lubricant oil is configured to enter the interior of the fluid by-pass line through the end portion of the second fluid line,
- wherein the lubricant oil is separated from the compressed gaseous cooling agent by the effect of gravity,
- wherein the lubricant oil drops down in the vertically oriented fluid by-pass line, and the compressed gaseous cooling agent is configured to rise up in the vertically oriented fluid by-pass line by the pressure applied to the cooling agent from the compressor,
- wherein a first axis corresponding to the direction of extension of the fluid by-pass line and a second axis corresponding to the direction of extension of the end portion of the second fluid line are arranged with an angle in respect to each other, and
- wherein the angle is in a range of 15° to 90°.
12 more elements
A cooling device, comprising:
- a cooling circuit, the cooling circuit comprising:
- an evaporator;
- a compressor connected to the evaporator by a first fluid line of the cooling circuit, the compressor being adapted to compress a cooling agent present in the cooling circuit during an active cooling mode, wherein the compressed cooling agent contains lubricant oil from the compressor;
- a condenser connected to the compressor by a second fluid line of the cooling circuit;
- and
- a fluid by-pass line that connects the first fluid line with the second fluid line,
- wherein the fluid by-pass line comprises a by-pass valve configured to at least partially close the fluid by-pass line in the active cooling mode,
- wherein the second fluid line is connected to the fluid by-pass line by a separator,
- wherein the separator is configured to physically separate lubricant oil from the compressed cooling agent, so that the lubricant oil is collected in the fluid by-pass line,
- wherein the cooling device comprises a control,
- wherein the fluid by-pass line and/or the by-pass valve comprises an oil level sensor, which is configured to detect a level of lubricant oil collected in the fluid by-pass line, and/or a flow rate sensor, which is configured to detect a flow rate of lubricant oil flowing in the fluid by-pass line, and
- wherein the control is configured to operate the by-pass valve in dependence of the detected level of lubricant oil and/or in dependence of the detected flow rate of lubricant oil.
9 more elements
A cooling device, comprising:
- a cooling circuit, the cooling circuit comprising:
- an evaporator;
- a compressor connected to the evaporator by a first fluid line of the cooling circuit, the compressor being adapted to compress a cooling agent present in the cooling circuit during an active cooling mode, wherein the compressed cooling agent contains lubricant oil from the compressor;
- a condenser connected to the compressor by a second fluid line of the cooling circuit;
- and
- a fluid by-pass line that connects the first fluid line with the second fluid line,
- wherein the fluid by-pass line comprises a by-pass valve configured to at least partially close the fluid by-pass line in the active cooling mode,
- wherein the second fluid line is connected to the fluid by-pass line by a separator,
- wherein the separator is configured to physically separate lubricant oil from the compressed cooling agent, so that the lubricant oil is collected in the fluid by-pass line,
- wherein the fluid by-pass line comprises an oil collecting portion for collecting lubricant oil in the fluid by-pass line, wherein the oil collecting portion is connected to an oil release line, and
- wherein the oil release line is connected to the first fluid line, in order to conduct lubricant oil from the oil collecting portion through the oil release line to the first fluid line.
8 more elements
A method for cooling by using a cooling circuit of a cooling device, wherein the cooling circuit comprises an evaporator, a compressor, which is connected to the evaporator by a first fluid line of the cooling circuit, a condenser, which is connected to the compressor by a second fluid line of the cooling circuit, and a fluid by-pass line of the cooling circuit, which connects the first fluid line with the second fluid line, wherein the second fluid line is connected to the fluid by-pass line by a separator, and wherein the fluid by-pass line comprises a by-pass valve, the method comprising:
- at least partially closing of the fluid by-pass line in an active cooling mode by the by-pass valve,
- compressing cooling agent present in the cooling circuit during the active cooling mode by the compressor, wherein the compressed cooling agent contains lubricant oil from the compressor, and
- physically separating the lubricant oil from the compressed cooling agent by the separator, so that the lubricant oil is collected in the fluid by-pass line,
- wherein the by-pass valve is configured to at least partially close the fluid by-pass line in the active cooling mode,
- wherein the second fluid line is connected to the fluid by-pass line by a separator,
- wherein the separator is configured to physically separate lubricant oil from the compressed cooling agent, so that the lubricant oil is collected in the fluid by-pass line,
- wherein at the separator, an end portion of the second fluid line is inserted into the interior of the fluid by-pass line,
- wherein the fluid by-pass line is oriented vertically in the cooling device,
- wherein compressed gaseous cooling agent containing lubricant oil is configured to enter the interior of the fluid by-pass line through the end portion of the second fluid line,
- wherein the lubricant oil is separated from the compressed gaseous cooling agent by the effect of gravity,
- wherein the lubricant oil drops down in the vertically oriented fluid by-pass line, and the compressed gaseous cooling agent is configured to rise up in the vertically oriented fluid by-pass line by the pressure applied to the cooling agent from the compressor,
- wherein a first axis corresponding to the direction of extension of the fluid by-pass line and a second axis corresponding to the direction of extension of the end portion of the second fluid line are arranged with an angle in respect to each other, and
- wherein the angle is in a range of 15° to 90°.
10 more elements
Dependencies are inferred from the claim text.