Remote control of an HVAC system that uses a common temperature setpoint for both heat and cool modes
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F24F-011/02
G05D-023/19
B60H-001/00
F24F-011/00
출원번호
US-0886925
(2010-09-21)
등록번호
US-8950687
(2015-02-10)
발명자
/ 주소
Bergman, Gabriel Albert
Mullarkey, Chris
Leen, Cary
Schultz, David
Cabel, Milos
출원인 / 주소
Honeywell International Inc.
대리인 / 주소
Seager Tufte & Wickhem LLC.
인용정보
피인용 횟수 :
8인용 특허 :
124
초록▼
An HVAC system includes an HVAC unit having a cooling mode and a heating mode for conditioning the air in an inside space, and a programmable thermostat located remotely from the HVAC unit. The HVAC unit may have an onboard controller configured to control when the HVAC unit is in the cooling mode o
An HVAC system includes an HVAC unit having a cooling mode and a heating mode for conditioning the air in an inside space, and a programmable thermostat located remotely from the HVAC unit. The HVAC unit may have an onboard controller configured to control when the HVAC unit is in the cooling mode or heating mode, and whether the HVAC unit is activated or not. In some cases, the onboard controller of the HVAC unit may use a common temperature setpoint when controlling in the cooling mode and the heating mode. The programmable thermostat may have a programmable schedule with a plurality of time periods, where each time period has a heating setpoint and a cooling setpoint separated by a dead band. The onboard controller of the HVAC unit may be configured to accept input signals from the remotely located thermostat. The remotely located thermostat may send one or more input signals to the onboard controller of the HVAC unit in accordance with the programmable schedule, where the one or more input signals cause the onboard controller of the HVAC unit to set the HVAC unit to a particular one of the cooling mode and the heating mode, and to activate the HVAC unit so as to condition the air in the inside space in the particular one of the cooling mode and the heating mode.
대표청구항▼
1. A wireless HVAC control system configured to command an HVAC unit, the HVAC unit having a heating mode and a cooling mode for modifying an air temperature of an inside space, the HVAC unit having an onboard HVAC unit thermostatic controller, the onboard HVAC unit thermostatic controller configure
1. A wireless HVAC control system configured to command an HVAC unit, the HVAC unit having a heating mode and a cooling mode for modifying an air temperature of an inside space, the HVAC unit having an onboard HVAC unit thermostatic controller, the onboard HVAC unit thermostatic controller configured to accept external selection of a control mode including a cooling control mode and a heating control mode, external input of an onboard setpoint, and external override of a current control temperature, the wireless HVAC control system including a wireless thermostat, the wireless thermostat comprising: a memory for storing operational parameters of the wireless thermostat including setpoints that include at least a cooling setpoint and a heating setpoint;a user interface configured to allow a user to modify the operational parameters of the wireless thermostat;a transmitter configured to transmit commands wirelessly to the HVAC unit;a temperature sensor disposed to measure the air temperature; anda controller operatively coupled to the memory, the user interface, the transmitter and the temperature sensor;wherein the controller is programmed to: determine whether modification of the air temperature is desired by comparing the air temperature measured by the temperature sensor with at least one of the cooling setpoint and the heating setpoint;if modification of the air temperature is not desired, wirelessly commanding the onboard HVAC unit thermostatic controller, via the transmitter, to prevent modification of the air temperature by the HVAC unit; andif modification of the air temperature is desired, wirelessly commanding via the transmitter to the onboard HVAC unit thermostatic controller to: externally select the control mode; andexternally input the onboard setpoint and/or externally override the current control temperature with values effective to cause the HVAC unit to cool or heat, according to the desire for modification of the air temperature. 2. The wireless HVAC control system of claim 1, further comprising a equipment interface module configured to communicatively couple to a control port of the HVAC unit, the equipment interface module including a receiver configured to receive wireless commands from the transmitter of the wireless thermostat, the equipment interface module configured to communicate commands to the HVAC unit via the control port, wherein the commands communicated to the HVAC unit via the control port are based upon the wireless commands from the transmitter of the wireless thermostat. 3. The wireless HVAC control system of claim 1, wherein the operational parameters stored in the memory of the wireless thermostat include a schedule having a plurality of time periods, at least one of the plurality of time periods associated with a time period cooling setpoint and a time period heating setpoint; andwherein, in the determining step the controller is programmed to perform, the step of comparing the air temperature measured by the temperature sensor with at least one of the cooling setpoint and the heating setpoint includes comparing the air temperature with the time period cooling setpoint and the time period heating setpoint during the at least one of the plurality of time periods, such that: if the air temperature is higher than the time period cooling setpoint, it is determined that cooling is desired;if the air temperature is lower than the time period heating setpoint, it is determined that heating is desired; andif the air temperature is between the time period cooling setpoint and the time period heating setpoint, it is determined that modification of the air temperature is not desired. 4. The wireless HVAC control system of claim 1, wherein the HVAC unit is a mini-split system. 5. A wireless HVAC control system configured to command an HVAC unit, the HVAC unit having a heating mode and a cooling mode for modifying an air temperature of an inside space, the HVAC unit having an onboard HVAC unit thermostatic controller, the onboard HVAC unit thermostatic controller configured to operate in accordance with a single temperature setpoint when in autochanger mode, the onboard HVAC unit thermostatic controller further configured to accept external selection of a control mode including a cooling control mode and a heating control mode, external input of an onboard setpoint, and external override of a current control temperature, the wireless HVAC control system including a wireless thermostat, the wireless thermostat comprising: a memory for storing operational parameters of the wireless thermostat including setpoints that include at least a cooling setpoint and a heating setpoint;a user interface configured to allow a user to modify the operational parameters of the wireless thermostat;a transmitter configured to transmit commands wirelessly to the HVAC unit;a temperature sensor disposed to measure the air temperature; anda controller operatively coupled to the memory, the user interface, the transmitter and the temperature sensor;wherein the controller is programmed to: determine whether modification of the air temperature is desired by comparing the air temperature measured by the temperature sensor with at least one of the cooling setpoint and the heating setpoint;if modification of the air temperature is not desired, wirelessly commanding the onboard HVAC unit thermostatic controller, via the transmitter, to prevent modification of the air temperature by the HVAC unit; andif modification of the air temperature is desired, wirelessly commanding via the transmitter to the onboard HVAC unit thermostatic controller to: externally select the control mode; andexternally input the onboard setpoint and/or externally override the current control temperature with values effective to cause the HVAC unit to cool or heat, according to the desire for modification of the air temperature. 6. The wireless HVAC control system of claim 5, further comprising a equipment interface module configured to communicatively couple to a control port of the HVAC unit, the equipment interface module including a receiver configured to receive wireless commands from the transmitter of the wireless thermostat, the equipment interface module configured to communicate commands to the HVAC unit via the control port, wherein the commands communicated to the HVAC unit via the control port are based upon the wireless commands from the transmitter of the wireless thermostat. 7. The wireless HVAC control system of claim 5, wherein the operational parameters stored in the memory of the wireless thermostat include a schedule having a plurality of time periods, at least one of the plurality of time periods associated with a time period cooling setpoint and a time period heating setpoint; andwherein, in the determining step the controller is programmed to perform, the step of comparing the air temperature measured by the temperature sensor with at least one of the cooling setpoint and the heating setpoint includes comparing the air temperature with the time period cooling setpoint and the time period heating setpoint during the at least one of the plurality of time periods, such that: if the air temperature is higher than the time period cooling setpoint, it is determined that cooling is desired;if the air temperature is lower than the time period heating setpoint, it is determined that heating is desired; andif the air temperature is between the time period cooling setpoint and the time period heating setpoint, it is determined that modification of the air temperature is not desired. 8. The wireless HVAC control system of claim 5, wherein the HVAC unit is a mini-split system.
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