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US 9,714,780 B2Granted
On-demand micro expansion valve for a refrigeration system
AssigneeZhejiang Dunan Hetian Metal Co., Ltd.
InventorsEdward Nelson Fuller, Parthiban Arunasalam
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Abstract
A refrigeration system includes a compressor, a condenser fluidly connected to the compressor, an evaporator fluidly connected to the condenser and the compressor, such that fluid may flow from the compressor through the condenser, through the evaporator, and again through the compressor. An expansion device is fluidly connected between the condenser and the evaporator, and a micro-expansion valve is also connected between the condenser and the evaporator.
Claims15
A refrigeration system comprising:
- a compressor;
- a condenser fluidly connected to the compressor;
- an evaporator fluidly connected to the condenser and the compressor, such that fluid may flow from the compressor through the condenser, through the evaporator, and again through the compressor;
- a fixed expansion device fluidly connected between the condenser and the evaporator;
- and
- a micro-expansion valve fluidly connected between the condenser and the evaporator;
- wherein the micro-expansion valve is connected between the condenser and the evaporator in parallel with the fixed expansion device;
- and
- wherein the fixed expansion device and the micro-expansion valve are connected to an inlet of the evaporator via a single fluid outlet, the single fluid outlet defining a single fluid flow path from the fixed expansion device and the micro-expansion valve upstream of the evaporator.
6 more elements
A refrigeration system comprising:
- a compressor;
- a condenser fluidly connected to the compressor;
- an evaporator fluidly connected to the condenser and the compressor, such that fluid may flow from the compressor through the condenser, through the evaporator, and again through the compressor;
- and
- a micro-expansion valve fluidly connected between the condenser and the evaporator;
- wherein the micro-expansion valve includes a normally open first valve port defining a fixed expansion device and a second valve port configured to provide a variable rate of fluid flow therethrough;
- and
- wherein the micro-expansion valve is connected to an inlet of the evaporator via a single fluid outlet, the single fluid outlet defining a single fluid flow path from the first and second valve ports upstream of the evaporator.
5 more elements
Dependencies are inferred from the claim text.