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US 11,168,931 B2Granted
Vapor compression system with reheat coil
AssigneeJohnson Controls Technology Company
InventorsNorman J. Blanton, Stephen C. Wilson, Curtis W. Caskey
Life of this patent
Estimating the term…
Abstract
A vapor compression system that includes a reheat coil that heats a supply air stream flowing across the reheat coil with a refrigerant. A fan forces an environmental air flow across a condenser to remove energy from the refrigerant. A controller adjusts a speed of the fan to control a flow of the refrigerant through the reheat coil.
Claims25
A vapor compression system, comprising:
- a reheat coil configured to heat a supply air stream with a refrigerant;
- a fan configured to force an environmental air flow across a condenser to remove energy from the refrigerant;
- a motor coupled to the fan;
- and
- a controller configured to adjust a speed of the fan based on feedback from a sensor to control an amount of the refrigerant flowing through the reheat coil in order to adjust a parameter of the supply air stream, wherein:
- in response to the feedback from the sensor indicating that a value of the parameter of the supply air stream is below a target value, the controller is configured to control the motor to deactivate the fan or to decrease the speed of the fan to effectuate an increase in the value of the parameter of the supply air stream;
- or
- in response to the feedback from the sensor indicating that the value of the parameter of the supply air stream is above the target value, the controller is configured to control the motor to activate the fan or to increase the speed of the fan to effectuate a decrease in the value of the parameter of the supply air stream;
- or both.
6 more elements
A vapor compression system, comprising:
- a first coil configured to cool a supply air flow with a refrigerant;
- a second coil configured to heat the supply air flow with the refrigerant;
- a compressor configured to supply the first coil and the second coil with the refrigerant;
- a fan configured to force an environmental air flow across a condenser to remove energy from the refrigerant;
- a sensor configured to provide the controller with feedback indicative of a parameter of the supply air flow;
- and
- a controller configured to adjust a speed of the fan based on the feedback to control an amount of the refrigerant flowing through the second coil in order to adjust the parameter of the supply air flow, wherein, in response to the feedback from the sensor indicating that a value of the parameter of the supply air flow deviates from a target value, the controller is configured to adjust the speed of the fan to effectuate an increase or decrease in the value of the parameter of the supply air flow.
4 more elements
A vapor compression system, comprising:
- a reheat coil configured to receive a first portion of a refrigerant flow from a compressor to heat a first fluid flow across the reheat coil;
- a condenser fluidly coupled to the compressor and configured to receive a second portion of the refrigerant flow from the compressor;
- a first fan configured to force a second fluid flow across the condenser;
- a second fan configured to force the second fluid flow across the condenser;
- and
- a controller configured to control a first speed of the first fan and/or a second speed of the second fan based on feedback from a sensor to adjust diversion of the first portion of the refrigerant flow to the reheat coil and the second portion of the refrigerant flow to the condenser without utilizing a valve, wherein, in response to the feedback from the sensor indicating that a value of a parameter of the first fluid flow is below a target value, the controller is configured to control a first motor of the first fan to deactivate the first fan or to decrease the first speed of the first fan to effectuate an increase in the value of the parameter of the first fluid flow, or, in response to the feedback from the sensor indicating that the value of the parameter of the first fluid flow is above the target value, the controller is configured to control the first motor to activate the first fan or to increase the first speed of the first fan to effectuate a decrease in the value of the parameter of the first fluid flow, or both.
3 more elements
A vapor compression system, comprising:
- a coil configured to heat a supply air stream with a refrigerant flowing therethrough;
- a fan configured to force an environmental air flow across a condenser to remove energy from the refrigerant;
- a motor coupled to the fan;
- and
- a controller configured to adjust a speed of the fan based on feedback from a sensor to control an amount of the refrigerant flowing through the coil without utilizing a valve, wherein the controller is configured to:
- control the motor to deactivate the fan or to decrease the speed of the fan to effectuate an increase in a value of a parameter of the supply air stream in response to the feedback from the sensor indicating that the value of the parameter of the supply air stream is below a target value;
- or
- control the motor to activate the fan or to increase the speed of the fan to effectuate a decrease in the value of the parameter of the supply air stream in response to the feedback from the sensor indicating that the value of the parameter of the supply air stream is above the target value;
- or both.
6 more elements
Dependencies are inferred from the claim text.