# US 10,871,294 B2 · Heating device and method for operating a heating device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,871,294 B2 - Document ID: US10871294B2 - Status: Granted - Kind: B2 - Application number: 15/761,328 - Filed: 2016-09-26 - Published: 2018-09-20 - Granted: 2020-12-22 - Earliest claimed: 2015-09-28 - Assignees: Bosch Termotecnologia S.A. - Applicants: Bosch Termotecnologia S.A. - Inventors: David Carvalho Guilherme - Web page: https://patentgrep.com/patent/US10871294B2 ## CPC - F24D 19/1051: {for domestic hot water} - F24D 19/10: Arrangement or mounting of control or safety devices (only the heater being controlled F24H9/20) - F24H 1/12: in which the water is kept separate from the heating medium - F24H 1/122: {combined with storage tank} - F24H 1/44: with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 - F24H 9/1818: Arrangement or mounting of electric heating means - F24H 9/20: Arrangement or mounting of control or safety devices - F24H 9/2014: {using electrical energy supply} - F24H 15/31: of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves - F24H 15/36: of burners - F24D 2220/0235: Three-way-valves - F24D 2220/042: Temperature sensors - F24H 15/215: before heating - F24H 15/219: after heating - F24H 15/238: Flow rate - F24H 15/414: using electronic processing, e.g. computer-based - F24D: DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR (using steam or condensate extracted or exhausted from steam engine plants for heating purposes F01K17/02) - F24H: FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL (steam generation F22) ## Abstract A heating device, including at least one heating unit, which is configured to heat at least one fluid; at least one fluid supply line, which is provided for supplying the fluid to the heating unit for heating; at least one fluid discharge line, which is provided for discharging the fluid from the heating unit after the heating; and a control and/or regulating unit, which is configured to operate the heating unit in a pulsed manner, in at least one operating state, in order to set a particular temperature. The heating device includes a valve unit, which is configured to mix the fluid in the fluid discharge line with fluid from the fluid supply line, upstream from an outlet. ## Claims ### Claim 1 A heating device, comprising: at least one heater configured to heat at least one fluid; at least one fluid supply line which supplies the at least one fluid to the at least one heater for heating; at least one fluid discharge line which discharges the at least one fluid from the at least one heater after the heating; a control and/or regulator which operates the at least one heater in a pulsed manner in at least one operating state to set a particular temperature; and a valve unit which mixes the at least one fluid in the fluid discharge line with fluid from the fluid supply line, upstream from an outlet, wherein the control and/or regulator is configured to control the valve unit at least substantially synchronously with a pulsed operation of the at least one heater by generating and/or outputting a control pulse for controlling the valve unit simultaneously to generating and/or outputting a control pulse for controlling the at least one heater. ### Claim 2 (depends on 1) The heating device as recited in claim 1, wherein the control and/or regulator is configured to control the valve unit so that the at least one fluid has an at least substantially uniform outlet temperature. ### Claim 3 (depends on 1) The heating device as recited in claim 1, wherein the control and/or regulator is configured to increase a flow rate of fluid through the valve unit during the pulsed operation, in response to increasing heating power of the at least one heater. ### Claim 4 (depends on 1) The heating device as recited in claim 1, wherein the control and/or regulator is configured to decrease a flow rate of fluid through the valve unit during the pulsed operation, in response to decreasing heating power of the at least one heater. ### Claim 5 (depends on 1) The heating device as recited in claim 1, wherein the valve unit includes at least one bypass valve, which is situated fluidically in parallel with the at least one heater. ### Claim 6 (depends on 1) The heating device as recited in claim 1, wherein the valve unit includes at least one mixing valve, which is situated fluidically in the fluid discharge line. ### Claim 7 (depends on 1) The heating device as recited in claim 1, wherein the control and/or regulator is configured to operate the at least one heater in a pulsed manner, such that the at least one fluid is heated to a temperature, which lies above a selected outlet temperature of the at least one fluid. ### Claim 8 A continuous-flow heater, including at least one heating device, the at least one heating device comprising: at least one heater configured to heat at least one fluid; at least one fluid supply line which supplies the at least one fluid to the at least one heater for heating; at least one fluid discharge line which discharges the at least one fluid from the at least one heater after the heating; a control and/or regulator which operates the at least one heater in a pulsed manner in at least one operating state to set a particular temperature; and a valve unit which mixes the at least one fluid in the fluid discharge line with fluid from the fluid supply line, upstream from an outlet, wherein the control and/or regulator is configured to control the valve unit at least substantially synchronously with a pulsed operation of the at least one heater by generating and/or outputting a control pulse for controlling the valve unit simultaneously to generating and/or outputting a control pulse for controlling the at least one heater. ### Claim 9 A method for operating a heating device, the heating device including at least one heater which is configured to heat at least one fluid, at least one fluid supply line which supplies the at least one fluid to the at least one heater for heating, at least one fluid discharge line which discharges the at least one fluid from the at least one heater after the heating, and a control and/or regulator which is configured to operate the heater in an at least partially pulsed manner, in at least one operating state, in order to set a particular temperature, the method comprising: mixing the at least one fluid in the fluid discharge line with fluid from the fluid supply line, upstream from an outlet, wherein the control and/or regulator is configured to control a valve unit at least substantially synchronously with a pulsed operation of the at least one heater by generating and/or outputting a control pulse for controlling the valve unit simultaneously to generating and/or outputting a control pulse for controlling the at least one heater.