System design for noise reduction of solenoid valve
AssigneeLennox Industries Inc.
InventorsBrandon Ullrich, Ammar Kailani
Life of this patent
Estimating the term…
Abstract
A bypass line is described that is capable of equalizing pressure within an HVAC system. The bypass line can also cause less noise than other solutions. A bypass line under the present disclosure can comprise a line from a high pressure side to a low pressure side of an HVAC system. Valves and orifices can be disposed within the bypass line. The valves and orifices help to slow the speed of fluid from high pressure to low pressure locations, thus reducing noise during pressure equalization.
Claims20
A bypass line within a heating, ventilation, and air conditioning (HVAC) system comprising:
- a fluid line connected to a high pressure side of a compressor and a low pressure side of the compressor of the HVAC system;
- a valve within the fluid line disposed between the high pressure side and the low pressure side;
- an orifice disposed within the fluid line and arranged upstream from the valve in a refrigerant flow direction, wherein the orifice comprises a diameter that is smaller than a diameter of the fluid line, wherein a first end of the orifice is directly connected to the high pressure side of the compressor and a second end of the orifice is directly connected to the valve;
- wherein, when the valve is open, refrigerant flows through the fluid line from the high pressure side to the low pressure side via the orifice and the valve, wherein the refrigerant contacts the orifice prior to contacting the valve;
- wherein flow of refrigerant from a high pressure side of the orifice is initially slowed upon contact with the orifice;
- and
- wherein the flow of refrigerant from a high pressure side of the valve is subsequently slowed upon contact with the valve.
A method of equalizing pressure within a heating, ventilation, and air conditioning (HVAC) system comprising:
- connecting a high pressure side of a compressor to a lower pressure side of the compressor of the HVAC system using a bypass line;
- receiving a request for pressure equalization in the HVAC system;
- opening a valve within the bypass line so that refrigerant flows from the high pressure side to the low pressure side;
- providing, within the bypass line, an orifice comprising a diameter that is smaller than a diameter of the bypass line, wherein the refrigerant contacts the orifice prior to contacting the valve, wherein a first end of the orifice is directly connected to the high pressure side of the compressor and a second end of the orifice is directly connected to the valve;
- wherein flow of refrigerant from a high pressure side of the orifice is initially slowed upon contact with the orifice;
- and
- wherein the flow of refrigerant from a high pressure side of the valve is subsequently slowed upon contact with the valve.
A heating, ventilation, and air conditioning (HVAC) system for circulating refrigerant, comprising:
- a condenser configured to condense at least a portion of the refrigerant;
- an expansion device configured to receive the refrigerant from the condenser;
- an evaporator coil configured to receive the refrigerant from the expansion device;
- a compressor configured to receive the refrigerant from the evaporator coil;
- and
- a bypass line connecting a high and low pressure sides of the HVAC system, the bypass line comprising;
- a fluid line connected to a high pressure side of the compressor and a low pressure side of the compressor of the HVAC system;
- a valve within the fluid line disposed between the high pressure side and the low pressure side;
- an orifice disposed within the fluid line and arranged upstream from the valve in a refrigerant flow direction, wherein the orifice comprises a diameter that is smaller than a diameter of the fluid line, wherein a first end of the orifice is directly connected to the high pressure side of the compressor and a second end of the orifice is directly connected to the valve;
- wherein, when the valve is open, refrigerant flows through the fluid line from the high pressure side to the low pressure side via the orifice and the valve, wherein the refrigerant contacts the orifice prior to contacting the valve;
- wherein flow of refrigerant from a high pressure side of the orifice is initially slowed upon contact with the orifice;
- and
- wherein the flow of refrigerant from a high pressure side of the valve is subsequently slowed upon contact with the valve.
Dependencies are inferred from the claim text.