US 2026/0153260 A1 · CONTROL SYSTEM FOR AN HVAC SYSTEM

Abstract

A controller of a heating, ventilation, and air conditioning (HVAC) system includes a non-transitory, computer-readable medium having instructions stored thereon. The instructions, when executed by processing circuitry of the controller, are configured to cause the controller to receive, via a temperature sensor coupled to a condenser of the HVAC system, data indicative of a temperature of a working fluid directed through the condenser, determine a saturated pressure of the working fluid based on the data and based on working fluid reference data stored on the non-transitory, computer-readable medium, and compare the saturated pressure to a threshold value. In response to a determination that the saturated pressure exceeds the threshold value, the controller is configured to reduce a frequency of a compressor of the HVAC system, increase a speed of a fan configured to force an air flow across the condenser, or both.

Claims20

Dependent claims

A heating, ventilation, and air conditioning (HVAC) system, comprising:

a working fluid circuit configured to direct a working fluid therethrough;
a compressor disposed along the working fluid circuit;
a condenser disposed along the working fluid circuit and configured to receive the working fluid from the compressor;
a fan configured to direct an air flow across the condenser;
a temperature sensor coupled to the condenser;
and
a controller communicatively coupled to the compressor, the fan, and the temperature sensor, wherein the controller is configured to:
receive data indicative of a temperature of the working fluid from the temperature sensor;
determine a pressure of the working fluid based on the data;
and
control operation of the compressor, the fan, or both based on the pressure.

8 more elements

A control system for a heating, ventilation, and air conditioning (HVAC) system, wherein the control system comprises:

a temperature sensor coupled to a coil of a condenser of the HVAC system;
and
a controller communicatively coupled to the temperature sensor, wherein the controller is configured to:
receive, via the temperature sensor, data indicative of a temperature of a working fluid directed through the coil of the condenser;
determine a saturated pressure of the working fluid based on the data;
compare the saturated pressure to a threshold value;
and
in response to a determination that the saturated pressure exceeds the threshold value:
adjust a frequency of a compressor of the HVAC system;
adjust a speed of a fan configured to force an air flow across the coil of the condenser;
or
both.

9 more elements

A controller of a heating, ventilation, and air conditioning (HVAC) system, wherein the controller comprises a non-transitory, computer-readable medium having instructions stored thereon that, when executed by processing circuitry of the controller, are configured to cause the controller to:

receive, via a temperature sensor coupled to a condenser of the HVAC system, data indicative of a temperature of a working fluid directed through the condenser;
determine a saturated pressure of the working fluid based on the data and based on working fluid reference data stored on the non-transitory, computer-readable medium;
compare the saturated pressure to a threshold value;
and
in response to a determination that the saturated pressure exceeds the threshold value:
reduce a frequency of a compressor of the HVAC system;
increase a speed of a fan configured to force an air flow across the condenser;
or
both.

6 more elements

Dependencies are inferred from the claim text.

Control system for an hvac system

Life of this patent

Control system for an hvac system

Life of this patent

Abstract

Claims20