WO2017133241A1 - Dispositif de chauffage d'eau à gaz, système de chauffage d'eau à gaz, chauffe-eau à gaz et dispositif de chauffage d'eau - Google Patents

Dispositif de chauffage d'eau à gaz, système de chauffage d'eau à gaz, chauffe-eau à gaz et dispositif de chauffage d'eau Download PDF

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Publication number
WO2017133241A1
WO2017133241A1 PCT/CN2016/098279 CN2016098279W WO2017133241A1 WO 2017133241 A1 WO2017133241 A1 WO 2017133241A1 CN 2016098279 W CN2016098279 W CN 2016098279W WO 2017133241 A1 WO2017133241 A1 WO 2017133241A1
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WIPO (PCT)
Prior art keywords
water
gas
heat exchanger
mode
hot water
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PCT/CN2016/098279
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English (en)
Chinese (zh)
Inventor
邱步
毕大岩
蔡茂虎
魏爱国
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艾欧史密斯(中国)热水器有限公司
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Publication of WO2017133241A1 publication Critical patent/WO2017133241A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/108—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using solid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/174—Supplying heated water with desired temperature or desired range of temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/315—Control of valves of mixing valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/335—Control of pumps, e.g. on-off control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/345—Control of fans, e.g. on-off control
    • F24H15/35—Control of the speed of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F24H15/421—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data
    • F24H15/429—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data for selecting operation modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2028—Continuous-flow heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/176—Improving or maintaining comfort of users
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/281—Input from user
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/36—Control of heat-generating means in heaters of burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/37—Control of heat-generating means in heaters of electric heaters

Definitions

  • the present application relates to the field of hot water technology, and in particular to a gas hot water device, a gas hot water system, a gas water heater and a hot water device.
  • Hot water devices gas water heaters, heating stoves, and electric water heaters
  • the water in the circulation line is heated by the hot water device, so that when the user uses the hot water, it is not necessary to discharge the normal temperature water or the low temperature water in the pipeline between the hot water device and the water terminal, and the hot water can be used at any time.
  • the heating device in the unit stops heating and the circulation line stops circulating.
  • the temperature of the water in the circulation line will decrease again, and once the temperature of the water in the circulation line drops to a low level, the heating device and the water pump are restarted.
  • the heating and water pump after the restarting will cause the temperature of the water in the circulation line to reach or exceed the set outlet temperature faster, and the heating device in the hot water device stops heating again.
  • the water pump and the heating device in order to achieve the water temperature of the water in the circulation line, the water pump and the heating device must be frequently turned on and off.
  • the temperature of the water in the circulation pipeline changes in a relatively large range, which affects the comfort of the user.
  • the hot water device especially the gas water heater, large noise is generated during high power operation and frequent start and stop.
  • the technical problem to be solved by the present application is to provide a gas hot water device, a gas hot water system, a gas water heater, and a hot water device, which can solve at least one of the above problems.
  • the present application discloses a gas hot water device comprising: a heat exchanger having a water inlet and a water outlet; a combustion device for heating water in the heat exchanger, the combustion The device has a first operational mode of a first output power range and a second operational mode of a second output power range; the first output power range is less than 4 kilowatts; a water pump in communication with the heat exchanger; and the combustion a control device connected to the water pump; the gas hot water device has a preheat cycle mode, the preheat cycle mode: the control device controls the water pump to drive water flow in the heat exchanger, and controls The combustion device is in a first mode of operation.
  • the present application discloses a gas hot water system including: a heat exchanger having a water inlet and a water outlet; the water outlet is connected to a hot water pipeline at the water end; the water inlet is connected to the water a return water pipeline of the end; the hot water pipeline, the return water pipeline and the heat exchanger may be connected to form a circulation pipeline; a combustion device for heating water in the heat exchanger, the combustion device having a first output power a first mode of operation of the range, and a second mode of operation of the second output power range; a maximum value of the first output power range of less than 4 kilowatts; a water pump in communication with the heat exchanger; and the combustion apparatus and a control device for connecting a water pump; the gas hot water system has a preheat cycle mode, the preheat cycle mode comprising: the control device controlling the water pump to drive water flow in the heat exchanger, and controlling the combustion The device is in the first mode of operation.
  • the present application discloses a gas water heater comprising: a heat exchanger having a water inlet and a water outlet; a combustion device for heating water in the heat exchanger; the combustion device having a first output a first mode of operation of the power range, and a second mode of operation of the second output power range; a maximum value of the first output power range is less than 4 kilowatts; a stepless speed regulation disposed downstream of the combustion device along a direction of combustion smoke a water pump; a water pump in communication with the heat exchanger; a control device connected to the combustion device, the water pump, and the stepless speed control fan; the gas water heater has a preheat cycle mode, and the preheat cycle mode includes The control device controls the water pump to drive water flow in the heat exchanger, controls the combustion device to be in a first working mode, and controls the rotation speed of the stepless speed control fan to match the first working mode.
  • the present application discloses a hot water device including: a heat exchanger having a water inlet and a water outlet; a heating device for heating water in the heat exchanger; and the heat exchanger a connected water pump; a control device coupled to the heating device and the water pump; the hot water device having a preheat cycle mode, the preheat cycle mode comprising: the control device controlling the water pump to drive the heat exchange The flow of water in the device controls the heating device to be in a first mode of operation, the heating power of the first mode of operation being less than 4 Kw.
  • the gas water heater can reduce the number of starts of the combustion device and the water pump, can reduce the sound emitted by the gas water heater, and can maintain the temperature of the water outlet stable.
  • FIG. 1 is a schematic structural view of an embodiment of a gas water heater according to the present application.
  • FIG. 2 is a simplified schematic diagram of one embodiment of a gas hot water system of the present application.
  • Fig. 3 is a simplified schematic view showing another embodiment of the gas hot water system of the present application.
  • Fig. 5 is a structural schematic view of the distributor of the gas water heater of Fig. 1.
  • the above reference numerals are: 1, heat exchanger; 2, combustion device; 3, water pump; 4, control device; 5, stepless speed control fan; 6, distributor; 61, chamber; 62, solenoid valve 7, hose; 8, housing; 9, return water pipeline; 10, control department; 11, mixing valve; 12, hot water pipeline; 13, cold water pipe.
  • an embodiment of the present application discloses a gas hot water device including: a heat exchanger 1 having a water inlet and a water outlet; and water for the heat exchanger 1 a heating device 2 for heating, the combustion device 2 having a first operating mode of a first output power range, and a second operating mode of a second output power range; a maximum value of the first output power range being less than 4 kW; a water pump 3 in communication with the heat exchanger 1; a control device 4 connected to the combustion device 2 and the water pump 3; the gas water heater device has a preheat cycle mode, the preheat cycle mode includes: The control device 4 controls the water pump 3 to drive the flow of water in the heat exchanger 1, and controls the combustion device 2 to be in the first mode of operation.
  • the gas hot water device in the embodiment of the present application has a preheat cycle mode.
  • the control device 4 in the gas hot water device can cause the water pump 3 to drive the water in the heat exchanger 1, thereby transferring the water and the circulation pipe in the heat exchanger 1.
  • the water in the circulation is circulating.
  • the control device 4 in the gas hot water device is also
  • the combustion device 2 can be operated in a first mode of operation, i.e., the combustion device 2 is operated at a lower output power, such as 1-3 kW.
  • the gas water heater can also make the water pump in the preheating cycle, while ensuring that the water temperature of the water in the circulation line or the water temperature of the water in the heat exchanger 1 approaches the preheating target temperature. 3 continues to be in operation, and the combustion device 2 can also be kept in operation.
  • the water temperature of the water in the circulation line or the water in the heat exchanger 1 can also be maintained at the preheating target temperature for a long time, and the fluctuation of the water temperature of the water in the circulation line or the water in the heat exchanger 1 is also small. Referring to FIG.
  • the thick solid line is the temperature curve of the water in the heat exchanger 1 in the preheating cycle mode using the gas water heater of the present application, and the gas hot water device in the present application is used for preheating.
  • the fluctuation of the temperature of the water in the heat exchanger 1 in the circulation mode is 4 degrees Celsius;
  • the broken line is the temperature curve of the water in the heat exchanger 1 of the prior art gas water heater in the preheating cycle mode, and the existing In the technology, the temperature of the water in the heat exchanger 1 of the gas hot water heater in the preheating cycle mode is 8 degrees Celsius.
  • the temperature profile of the water in the heat exchanger 1 in the preheating cycle mode of the gas water heater of the present application is higher than that of the heat exchanger 1 in the preheating cycle mode of the prior art gas water heater.
  • the temperature curve of the water in the water is more stable and basically stays at or maintains at the set temperature (50 degrees Celsius).
  • the gas-fired water heater in the embodiment of the present application reduces the number of ignitions of the combustion device 2 and the water pump 3 The number of starts, which in turn reduces the sound produced by the gas water heater during the preheat cycle.
  • the combustion device operates at a lower output power, and the gas hot water device emits a lower sound. It has been experimentally found that the sound of the prior art gas water heater in the preheating cycle mode is approximately between 47 and 53.5 decibels, and the sound of the gas water heater in the preheating cycle mode is substantially Between 40-44 decibels.
  • the hood is made of stainless steel, thereby ensuring Safe to use.
  • the gas hot water device includes a casing 8 in which the water pump 3 is located, and the outer diameter of the water pump 3 is less than 50 mm (mm).
  • the operating flow rate of the water pump 3 is less than 5 L/MIN (liters per minute).
  • the water pump 3 is a variable frequency pump in order to make it possible for the water pump 3 to better control the flow rate therethrough.
  • the user for any pipeline can achieve the function of constant current circulation (about 3L/MIN) by adjusting the water pump 3. Therefore, the circulating water temperature is stable, the cycle time is short, and the user's hot water experience in the circulation section is improved.
  • the control device 4 controls the water pump 3 to drive the water in the heat exchanger 1 to operate at a preset flow rate.
  • the gas hot water device can be based on a user pipeline The information, the target temperature of the water, the temperature of the water in the circulation line, the combustion device 2, the output power of the combustion device 2, etc., calculate or give a preset flow rate with the best parameter ratio to output the output of the combustion device 2 Limited to the first output power range.
  • the control device 4 can adjust the operating flow rate of the water pump 3 according to the preset flow rate. K For example, the preset flow rate is 3L/MIN.
  • the water pump 3 can increase the flow rate of water in the circulation line until it reaches 3 L/MIN.
  • the water pump 3 can reduce the flow rate of water in the circulation line until it reaches 3 L/MIN. It is calculated that the preset flow range can be 2-5L/MIN.
  • the sound emitted by the gas water heater can be low, such as less than 46 decibels, thereby improving the user experience.
  • a shock pad (such as a rubber pad) may be disposed between the casing 8 and the water pump 3, thereby the water pump 3 and The sound emitted between the housings 8 is lowered.
  • a shock absorbing member such as a hose 7, may also be provided between the line connected to the water pump 3 and the water pump 3, thereby completely isolating the water pump 3 from the entire machine.
  • the hose 7 can have a pressure resistance and a high temperature resistance effect, and can also absorb the vibration generated by the water pump 3, thereby greatly reducing the noise during the preheating cycle and improving the user experience.
  • the combustion device 2 comprises a distributor 6 having at least two chambers 61, at least one of which has a chamber 61 corresponding to the fire row of one or two or three burners 2.
  • the dispenser 6 has three chambers 61 and three solenoid valves 62.
  • the three chambers 61 respectively correspond to a solenoid valve 62 capable of operating the chamber 61 of the distributor 6 in accordance with the needs of the combustion device 2, for example, the three solenoid valves 62 can make this
  • the three chambers 61 are in operation or respectively at the same time.
  • One of the three chambers 61 is a preheating chamber (generally the smallest chamber 61, which may also share two chambers 61), which corresponds to two fire rows.
  • the distributor 6 When the gas hot water heater is in the preheat cycle mode, the distributor 6 has only the preheating chamber in communication with the proportional valve. At this time, two fire rows corresponding to the preheating chamber are in an operating state, and the output power of each fire row is approximately 1 kilowatt, and the output power of the combustion device 2 is approximately 2 KW (kilowatt).
  • the preheating cycle mode includes: when the control device 4 controls the heating device 2 to heat the water in the heat exchanger 1 to a preset range, the control device 4 controls The combustion device 2 heats the water in the heat exchanger 1 in the first mode of operation and causes the water temperature of the water in the heat exchanger 1 to approach the preheating target temperature.
  • the warm-up target temperature may be lower than the water target temperature or the same as the water target temperature.
  • the water target temperature can At 46 degrees Celsius
  • the corresponding preheat target temperature can be 43 degrees Celsius.
  • the combustion device 2 can increase the water temperature of the water in the heat exchanger 1 or the water temperature of the water in the circulation line to a preset range, such as 38-43 degrees Celsius, and then at the first In the working mode, the water in the heat exchanger 1 or the water in the circulation line gradually tends to preheat the target temperature. Due to the lower power of the combustion device in the first mode of operation, the water in the circulation line can be slightly heated and gradually heated to the preheating target temperature.
  • the combustion device 2 can exchange heat in the second mode of operation.
  • the water temperature of the water in the vessel 1 or the water temperature of the water in the circulation line is increased to a preset range.
  • the warm-up target temperature may be 43 degrees Celsius
  • the preset range may be 38 degrees Celsius to 42 degrees Celsius.
  • the combustion device 2 can be in the second operation mode, that is, the output power of the combustion device 2 is greater than 4 KW, the water temperature of the water in the heat exchanger 1 or the water temperature of the water in the circulation line is rapidly increased.
  • the combustion device 2 can raise the water temperature of the water in the heat exchanger 1 or the water temperature of the water in the circulation line (water driven by the water pump) to a preset range in the first operation mode. Thereby, the combustion device 2 can bring the water temperature of the water in the heat exchanger 1 or the water temperature of the water in the circulation line to a maximum value of the preset range without instantaneously exceeding the target temperature of the preheating cycle.
  • the control device 4 receives user usage rules, and the control device 4 controls the gas hot water device to perform a warm-up cycle mode based on the user usage rules. For example, based on the user usage rules, the control device 4 knows that the water consumption of the gas hot water device is low or the water frequency is low from 9:00 to 11:00 during the day. To save power, the control device 4 can prevent the gas water heater from entering.
  • the preheating cycle mode that is, the water pump 3 and the combustion device 2 of the gas water heater are in a stopped state. For another example, based on the user usage rule, the control device 4 obtains the peak of the water consumption of the gas hot water device at 22 o'clock in the evening or the water frequency is high.
  • control device 4 can make the gas hot water device at night 22 Enter the preheat cycle mode before the point (such as 21 o'clock in the evening). In this way, when the user needs water, the water that meets the user's requirements can be obtained immediately.
  • the embodiment of the present application discloses a gas hot water system including a heat exchanger 1 having a water inlet and a water outlet; a hot water pipeline 12 connected to the water outlet of the heat exchanger 1; a water line 9 connected to the water inlet; a hot water line 12, a return water line 9 and a heat exchanger 1 are connectable to form a circulation line; and a combustion device 2 for heating water in the heat exchanger
  • the combustion device 2 has a first operational mode of a first output power range and a second operational mode of a second output power range; the first output power range is less than 4 kilowatts; communicating with the heat exchanger 1 a water pump 3; a control device 4 connected to the combustion device 2 and the water pump 3; the gas water heating system There is a preheat cycle mode, the control device 4 controlling the water pump 3 to drive water flow in the heat exchanger 1, and controlling the combustion device 2 to be in a first mode of operation.
  • the gas hot water system in the embodiment of the present application has a preheating cycle mode.
  • the control device 4 in the gas hot water system can cause the water pump 3 to drive the water flow in the heat exchanger 1, thereby the water and the circulation line in the heat exchanger 1.
  • the water in the circulation is circulating.
  • the control device 4 in the gas hot water system can also operate the combustion device 2 in the first mode of operation, i.e., operate the combustion device 2 at a lower output power (such as 1-3 kW).
  • the gas water heater system can also make the water temperature of the water in the circulation line or the water temperature of the water in the heat exchanger 1 approach the preheating target temperature during the preheating cycle.
  • the water pump 3 is continuously in operation, and the combustion device 2 can also be kept in operation.
  • the water temperature of the water in the circulation line or the water in the heat exchanger 1 can also be maintained at the preheating target temperature for a long time, and the fluctuation of the water temperature of the water in the circulation line or the water in the heat exchanger 1 is also small. Since the sound of the gas hot water device is higher when the combustion device 2 is ignited and the water pump 3 is started, the gas water heater in the embodiment of the present application reduces the number of ignitions of the combustion device 2 and the number of starts of the water pump 3, and thus Correspondingly, the sound of the gas hot water system during the preheating cycle is reduced.
  • the control device 4 controls the combustion device 2 to heat the water in the heat exchanger 1 to a predetermined range
  • the control device 4 controls the combustion device 2
  • the water in the heat exchanger 1 is heated in the first mode of operation and the water temperature of the water in the heat exchanger 1 is brought to a preheating target temperature. That is, in the case of the preheating cycle mode, the combustion device 2 can increase the water temperature of the water in the heat exchanger 1 or the water temperature of the water in the circulation line to a preset range in the first working mode or the second working mode. Then, in the first working mode, the water in the heat exchanger 1 or the water in the circulation line gradually tends to preheat the target temperature.
  • the gas hot water system may further include a water mode in which the control device 4 can control the combustion device 2 to be in the second mode of operation, that is, the output power of the combustion device 2 is higher.
  • Large e.g., greater than 4 kW
  • the control device 4 controls the output power of the combustion device 2 so that the outlet water temperature of the heat exchanger 1 approaches the water target temperature.
  • the water target temperature is higher than the user set temperature. For example, when the user sets the temperature to 43 degrees Celsius, the water target temperature may be slightly higher in order to make the water temperature of the water mixed by the mixing valve 11 in accordance with the user set temperature, for example, the water target temperature may be 46 degrees Celsius. .
  • the variable frequency pump increases the preset flow rate to the intermediate flow
  • the control device 4 controls the output power of the combustion device 2.
  • Heat exchange The outlet water temperature of the device 1 tends to the water target temperature; the variable frequency pump continues to increase the intermediate flow rate to the influent flow rate of the water pump 3, and the control device 4 controls the output power of the combustion device 2 to cause the exchange
  • the outlet temperature of the heater 1 tends to the target temperature of water.
  • the output of the combustion device 2 needs to match the operating flow of the variable frequency pump.
  • the matching of the output power of the combustion device 2 with the operating flow of the variable frequency pump has a certain retardation.
  • one or more intermediate flow rates may be set, and the control device 4 controls the water pump 3
  • the control device 4 increases the output power of the combustion device 2 such that the output power of the combustion device 2 matches the intermediate flow rate of the water pump 3 when the combustion After the output power of the device 2 is matched with the intermediate flow rate of the water pump 3, the flow rate of the water pump 3 can be further increased to the next intermediate flow rate or increased to the operating mode of the water usage mode, and the output power of the combustion device 2 can be further increased, so that the combustion device The output power of 2 matches the next intermediate flow of the pump 3 or the operating flow of the water mode.
  • the control device 4 controls the variable frequency pump to reduce the flow rate to the intermediate flow rate, and the control device 4 controls the The output power of the combustion device 2 causes the outlet water temperature of the heat exchanger to approach the preheating target temperature; the variable frequency pump continues to reduce the intermediate flow rate to the preset flow rate, and the control device 4 controls the combustion The output power of the device 2 causes the outlet water temperature of the heat exchanger to approach the preheat target temperature.
  • the control device 4 of the gas hot water system can also cause the variable frequency pump to use water therein.
  • the mode runs under running traffic.
  • the control device 4 of the gas hot water system can also stop the variable frequency pump.
  • the combustion device 2 stops heating.
  • a temperature detecting means may be provided at the water inlet and the water outlet of the heat exchanger 1 or other circulation lines.
  • a flow rate detecting device may be provided at the outlet of the water pump 3 or other circulation line.
  • the gas hot water system includes a water mixing valve 11 having a hot water end and a cold water end.
  • the hot water end of the mixing valve 11 is in communication with the hot water pipe 12, and the cold water end of the mixing valve 11 can communicate with the water source through the cold water pipe 13; the water inlet of the heat exchanger 1 is connected to the water source; a portion 10, the hot water pipe 12 and the cold water pipe 13 may be connected when the control portion 10 is opened; the cold water pipe 13, the control portion 10 forms the water return pipe 9; After the water pump 3 is started, the control unit 10 is opened to allow the circulation line to communicate.
  • the gas water heater is for the case where the user does not have the return water pipe 9 installed in the home. That is, the gas hot water system can cause the hot water line 12, the control unit 10, the cold water pipe 13, and the heat exchanger 1 to form a circulation line through the control unit 10, thereby realizing a warm-up cycle mode.
  • This method solves the need for the hot water supply function without the return water pipe user.
  • the control portion 10 can be turned on based on the pressure signal supplied from the water pump 3.
  • the water pump 3 outputs a pressure signal to the control unit 10, thereby opening the control unit 10 so that the circulation line is connected.
  • the control unit 10 is a constant pressure switch device
  • the constant pressure switch device includes: a valve body having a flow passage therein; the flow passage having an inlet and an outlet; and a seal capable of mutually attracting each other a blocking member and a smokable member; the blocking member having a blocking position separating the inlet from the outlet and a communicating position connecting the inlet and the outlet at a predetermined distance;
  • the blocking member can move to the communication position; the blocking member The blocking member is movable toward the blocking position when a pressure difference between the two sides of the inlet to the outlet direction is less than an attractive force between the blocking member and the smokable member.
  • the control device 4 controls the variable frequency pump to give the constant pressure switch device a continuous starting pressure (such as 0.04-0.1 MPA), and the blocking member is along the inlet under the continuous action of the starting pressure.
  • the pressure difference between the two sides of the outlet direction is greater than the attraction between the blocking member and the smokable member, and the blocking member can continue to move toward the communication position, thereby reaching the communication position to open the constant pressure switch device.
  • the control device 4 controls the variable frequency pump to drive the water in the heat exchanger 1 to operate in order to operate at a lower and more suitable power consumption. Set the flow to run. Since the sealing member needs to be under the constant starting pressure, the constant pressure switch device can be opened, so that errors such as false start due to fluctuations in the water pressure of the pipeline can be avoided.
  • the gas hot water system includes a plurality of mixing valves 11, and the two ends of the control portion 10 are respectively respectively connected to the hot water end of the mixing valve 11 farthest from the heat exchanger 1.
  • the cold water ends are directly connected.
  • the return water line 9 when the return water line 9 is turned on, the water in the most hot water line 12 and the cold water pipe 13 can be circulated, and the route of the circulation line can be made longest.
  • the mixing valves 11 is opened, the water temperature of each corresponding user end can also meet the requirements.
  • a return water line 9 has been installed in the user's home, i.e., a return water line 9 is provided between the hot water end of the mixing valve 11 and the water inlet.
  • the embodiment of the present application discloses a gas water heater including a heat exchanger 1 having a water inlet and a water outlet; and a combustion for heating the water in the heat exchanger 1 Device 2; said combustion
  • the device 2 has a first operational mode of a first output power range and a second operational mode of a second output power range; the first output power range is less than 4 kilowatts; disposed downstream of the combustion device 2 in the direction of combustion smoke a stepless speed control fan 5; a water pump 3 in communication with the heat exchanger 1; a control device 4 connected to the combustion device 2, the water pump 3 and the stepless speed control fan 5; a thermal cycle mode, the preheating cycle mode comprising: the control device 4 controls the water pump 3 to drive water flow in the heat exchanger 1, controls the combustion device 2 to be in a first mode of operation, and controls the stepless The speed of the speed control fan 5 matches the first mode of operation of the combustion device 2.
  • control device 4 can control the heating device 2 to heat the water temperature of the water in the heat exchanger 1 to a preset range
  • the control device 4 controls the combustion device 2 at the The water in the heat exchanger 1 is heated in an operating mode, and the water temperature of the water in the heat exchanger 1 is brought to a preheating target temperature.
  • the control device 4 can control the rotation speed of the stepless speed control fan 5, that is, control the stepless speed control fan 5
  • the output of the combustion device 2 is operated at a matching speed, so as to satisfy the air volume condition required by the combustion device 2, the sound emitted by the stepless speed control fan 5 is minimized to further reduce the gas water heater in the preheating cycle.
  • the specific operation process can be referred to as a low noise gas fast water heater, patent No. ZL201210051343.1, and the control device 4 controls the combustion device to heat the burner group in a suitable low-decibel combustion load region.
  • the water temperature of the water in the heat exchanger reaches a preset range, and the rotation speed of the stepless speed control fan 5 is controlled to match the combustion of the suitable burner group.
  • the stepless speed regulating fan 5 in the present application may be located above the gas water heater, and the stepless speed regulating fan 5 is an upper drawing type fan. Since the combustion flue gas expands and expands itself, under the same combustion load, the fan speed of the upper exhaust technology is lower, and the generated combustion noise is correspondingly lower, so that the user experience is better.
  • the combustion device 2 comprises at least two groups of burners that can be controlled to burn separately or simultaneously in a low-decibel combustion load region, the control device 4 controlling the combustion device 2 to a suitable low
  • the burner group of the decibel combustion load region heats the water temperature of the water in the heat exchanger 1 to a preset range, and controls the rotation speed of the stepless speed control fan 5 to match the combustion of the suitable burner group.
  • the combustion load region of each combination is different according to the number of burner groups, and the noise regions corresponding to the combustion load regions of each combination are substantially the same.
  • the combustion load area corresponding to the low-noise area of different combination forms a continuous low-noise combustion load area of the gas rapid water heater, so that the noise of the gas fast water heater operating in the low-noise combustion load area is always kept in a low noise range, The user is no longer noisy because of the noise of the gas fast water heater when using water in the kitchen, and has achieved unexpected results.
  • the rotational speed of the stepless speed control fan 5 is controlled to match the amount of air required for combustion of the suitable burner group.
  • the embodiment of the present application also discloses a hot water device including a heat exchanger having a water inlet and a water outlet; a heating device for heating water in the heat exchanger; a water pump 3 connected to the heat exchanger; a control device 4 connected to the heating device and the water pump 3; the hot water device having a preheat cycle mode, the preheat cycle mode comprising: the control device 4 controlling the The water pump 3 drives the flow of water in the heat exchanger 1 to control the heating device to be in a first mode of operation, the heating power of the first mode of operation being less than 4 kW.
  • the hot water device is an electric water heater, and the heating device is an electric heating device.
  • the hot water device may also be other hot water devices with heating functions having the same or similar effects.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

L'invention concerne un dispositif de chauffage d'eau à gaz, un système de chauffage d'eau à gaz, un chauffe-eau à gaz et un dispositif de chauffage d'eau. Le dispositif de chauffage d'eau à gaz comprend : un échangeur de chaleur (1) ayant une entrée d'eau et une sortie d'eau ; un dispositif de combustion (2) servant à chauffer l'eau dans l'échangeur de chaleur (1), le dispositif de combustion (2) ayant un premier mode de fonctionnement dans une première plage de puissance de sortie et un second mode de fonctionnement dans une seconde plage de puissance de sortie, la première plage de puissance de sortie étant inférieure à 4 000 kW ; une pompe à eau (3) qui communique avec l'échangeur de chaleur (1) ; et un dispositif de commande (4) connecté au dispositif de combustion (2) et à la pompe à eau (3). Le dispositif de chauffage d'eau possède un mode de circulation de préchauffage. Selon le mode de circulation de préchauffage : le dispositif de commande (4) ordonne à la pompe à eau (3) d'amener l'eau à circuler dans l'échangeur de chaleur (1) ; et le dispositif de combustion (2) passe dans le premier mode de fonctionnement. Le dispositif de chauffage d'eau à gaz peut réduire le nombre de démarrages du dispositif de combustion et de la pompe à eau, réduire ses propres bruits et permettre à la température de l'eau ainsi fournie de rester stable.
PCT/CN2016/098279 2016-02-01 2016-09-07 Dispositif de chauffage d'eau à gaz, système de chauffage d'eau à gaz, chauffe-eau à gaz et dispositif de chauffage d'eau WO2017133241A1 (fr)

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CN201610071146.4 2016-02-01

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CN110793187A (zh) * 2019-12-09 2020-02-14 珠海格力电器股份有限公司 燃气热水系统及其控制方法
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CN112484316A (zh) * 2020-12-11 2021-03-12 万家乐热能科技有限公司 具备热水增压功能的零冷水壁挂炉及控制方法
CN114811947A (zh) * 2022-04-08 2022-07-29 广东万和新电气股份有限公司 燃气热水器的控制方法及燃气热水器
CN115200226A (zh) * 2022-08-26 2022-10-18 杭州老板电器股份有限公司 燃气加热设备预热控制方法、装置及燃气加热设备

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CN108317732A (zh) * 2017-12-29 2018-07-24 中山百得厨卫有限公司 一种自动混水的调温装置及燃气热水器
CN110793187A (zh) * 2019-12-09 2020-02-14 珠海格力电器股份有限公司 燃气热水系统及其控制方法
CN110793187B (zh) * 2019-12-09 2023-10-31 珠海格力电器股份有限公司 燃气热水系统及其控制方法
CN111912114A (zh) * 2020-07-09 2020-11-10 华帝股份有限公司 一种燃气热水器的控制方法
CN111912114B (zh) * 2020-07-09 2023-12-15 华帝股份有限公司 一种燃气热水器的控制方法
CN112484316A (zh) * 2020-12-11 2021-03-12 万家乐热能科技有限公司 具备热水增压功能的零冷水壁挂炉及控制方法
CN114811947A (zh) * 2022-04-08 2022-07-29 广东万和新电气股份有限公司 燃气热水器的控制方法及燃气热水器
CN114811947B (zh) * 2022-04-08 2024-04-12 广东万和新电气股份有限公司 燃气热水器的控制方法及燃气热水器
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