# US 10,767,889 B2 · Central air conditioning system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,889 B2 - Document ID: US10767889B2 - Status: Granted - Kind: B2 - Application number: 16/185,714 - Filed: 2018-11-09 - Published: 2019-06-13 - Granted: 2020-09-08 - Earliest claimed: 2017-12-13 - Assignees: Denso Wave Incorporated - Applicants: Denso Wave Incorporated - Inventors: Takayuki Urakawa - Web page: https://patentgrep.com/patent/US10767889B2 ## CPC - F24F 11/76: by means responsive to temperature, e.g. bimetal springs - F24F 3/044: Systems in which all treatment is given in the central station, i.e. all-air systems - F24F 11/63: Electronic processing - G05B 19/042: using digital processors (G05B19/05 takes precedence) - F24F 2110/10: Temperature - G05B 2219/2614: HVAC, heating, ventillation, climate control - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) ## Abstract A central air conditioning system includes dampers individually air conditioning multiple spaces, an air conditioning controller controlling the dampers, a temperature sensor disposed in each space to detect a temperature, and a temperature predictor that receives the detected temperature, predicts a temperature in each space, and transmits temperature information to the air conditioning controller. The temperature sensor may wirelessly transmit the detected temperature when an amount of change in temperature gradient exceeds an allowable range. Alternatively, the temperature sensor may predict a temperature based on a temperature gradient, and wirelessly transmit the detected temperature when a difference between the predicted and detected temperatures exceeds a certain range. Alternatively, the temperature sensor may predict a temperature by using one of prediction formulae, and transmit the detected temperature when a difference between the predicted and detected temperatures exceeds a certain range. ## Claims ### Claim 1 A central air conditioning system comprising: dampers configured to individually air-condition a plurality of spaces; an air conditioning controller configured to instruct the dampers to perform a control operation for the individual air conditioning of the plurality of spaces; a temperature sensor disposed in each of the plurality of spaces and configured to: detect a temperature and calculate an amount of change in temperature gradient at sampling time intervals; determine whether the amount of change in temperature gradient exceeds an allowable range; and transmit the detected temperature and the temperature gradient via a wireless communication when the amount of change in temperature gradient is determined to exceed the allowable range; and a temperature predictor, upon receiving the temperature and the temperature gradient, configured to: predict a temperature in each of the plurality of spaces to generate temperature information depending on elapsed time that passes from the timing of the receiving of the temperature and the temperature gradient; and transmit the temperature information to the air conditioning controller. ### Claim 2 A central air conditioning system comprising: dampers configured to individually air-condition a plurality of spaces; an air conditioning controller configured to instruct the dampers to perform a control operation for the individual air conditioning of the plurality of spaces; a temperature sensor disposed in each of the plurality of spaces and configured to: detect a temperature at sampling time intervals; predict a temperature based on a temperature gradient calculated last time; determine whether a difference between the predicted temperature and the actually detected temperature exceeds a certain range; and newly calculate the temperature gradient and transmit the calculated temperature gradient together with the detected temperature via a wireless communication when the difference between the predicted temperature and the actually detected temperature is determined to exceed the certain range; and a temperature predictor, upon receiving the temperature and the calculated temperature gradient, configured to: predict a temperature in each of the plurality of spaces to generate temperature information depending on elapsed time that passes from the timing of the receiving of the temperature and the calculated temperature gradient; and transmit the temperature information to the air conditioning controller. ### Claim 3 A central air conditioning system comprising: dampers configured to individually air-condition a plurality of spaces; an air conditioning controller configured to instruct the dampers to perform a control operation for the individual air conditioning of the plurality of spaces; a temperature sensor disposed in each of the plurality of spaces and configured to: detect a temperature at sampling time intervals; predict a temperature by using one of multiple prediction formulae which have been stored in the temperature sensor in advance for temperature prediction; and newly select another of the multiple prediction formulae and transmit information of the detected temperature and the selected prediction formula when a difference between the predicted temperature and the actually detected temperature exceeds a certain range; and a temperature predictor, upon receiving the information of the detected temperature and the selected prediction formula, configured to: predict a temperature in each of the plurality of spaces by using the selected prediction formula to generate temperature information depending on elapsed time that passes from the timing of the receiving of the information of the detected temperature and the selected prediction formula; and transmit the temperature information to the air conditioning controller. ### Claim 4 (depends on 3) The central air conditioning system according to claim 3, wherein one of the multiple prediction formulae is a formula obtained by approximating a temperature change by a linear function. ### Claim 5 (depends on 3) The central air conditioning system according to claim 3, wherein one of the multiple prediction formulae is a formula obtained by approximating a temperature change by a quadratic function. ### Claim 6 (depends on 3) The central air conditioning system according to claim 3, wherein one of the multiple prediction formulae is a formula obtained by approximating a temperature change by a sine function. ### Claim 7 (depends on 3) The central air conditioning system according to claim 3, wherein one of the multiple prediction formulae is a formula in which a temperature is constant.