CN114857783A - Control method capable of setting different power outputs of heating and bathroom and heating water heater - Google Patents
Control method capable of setting different power outputs of heating and bathroom and heating water heater Download PDFInfo
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- CN114857783A CN114857783A CN202210539502.6A CN202210539502A CN114857783A CN 114857783 A CN114857783 A CN 114857783A CN 202210539502 A CN202210539502 A CN 202210539502A CN 114857783 A CN114857783 A CN 114857783A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 200
- 239000008236 heating water Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 110
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000003111 delayed effect Effects 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000004200 deflagration Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 91
- 238000003287 bathing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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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)
- Central Heating Systems (AREA)
Abstract
The invention discloses a control method capable of setting different power outputs of heating and bathroom and a heating water heater thereof, wherein the control method comprises the steps of obtaining a water flow signal fed back by a water flow sensor, starting a bathroom mode if the water flow signal exists, executing a bathroom gear under the maximum output power of the bathroom, otherwise, starting a heating mode, and executing a heating gear under the maximum output power of the heating, wherein the maximum output power of the bathroom is greater than the maximum output power of the heating; after the execution mode is determined, the ignition program is started to be executed, and the system water is heated to be within the set temperature range. According to the control method, the heating furnace can change the output power of the heating furnace according to the type of starting of the heating furnace by setting the different output powers of the heating furnace and the bathroom, so that the best power output state is achieved when the heating furnace is used, the heating furnace and the bathroom are matched with each other in different powers, energy and gas can be saved more, and the comfort of a user can be improved.
Description
Technical Field
The invention relates to the technical field of intelligent control of gas heating water heaters, in particular to a control method capable of setting different power outputs of heating and bathroom and a gas heating water heater thereof.
Background
At present, the maximum heating output power of a gas heating water heater is the same as the maximum bathroom output power, and the maximum heating output power and the maximum bathroom output power are not controlled respectively. The power of the common gas heating stove is generally 18-36kW, and the living area of the common family is 90-150m 2 On the left and right sides, the area heat index of residential buildings, office buildings and the like is 70-105W/m according to the area heat index of the buildings 2 Is suitable, therefore, the heating power can reach 18kW for ordinary households, and the requirements of most households can be basically met.
However, when using a heating stove for domestic hot water, more power is needed to meet the demand, especially in northern areas. This results in the following problems:
1) because the required power of the bathroom is larger than the required power of heating, the heating and bathroom power are not respectively controlled in the prior art, the maximum heating output is the same as the maximum heating output of the bathroom, so that the maximum heating output exceeds the power actually required by heating, and when the heating is used, the natural gas consumption is large, and energy is not saved.
2) Because the temperature difference is big in the southern and northern area, the cold water difference in temperature of ground water is great, and the northern needs hanging stove possess bigger hot water production rate, consequently, is not big when user's house type, when using low-power hanging stove, can appear that the heating demand can satisfy, but bathroom power is not enough, hot water production rate ability is not enough, the travelling comfort is poor scheduling problem during the bathing.
Disclosure of Invention
In order to overcome the defects of the prior art, an object of the present invention is to provide a control method capable of setting different power outputs for heating and bathroom, so as to solve the above-mentioned conventional problems.
The invention also aims to provide a gas heating water heater adopting the control method capable of setting different power outputs of heating and bathroom.
One of the purposes of the invention is realized by adopting the following technical scheme:
a control method capable of setting different power outputs of heating and bathroom comprises the following steps:
s1: starting a gas heating water heater;
s2: acquiring a water flow signal fed back by a water flow sensor, starting a bathroom mode if the water flow signal exists, executing a bathroom gear under the maximum output power of a bathroom, otherwise, starting a heating mode, and executing a heating gear under the maximum output power of heating, wherein the maximum output power of the bathroom is greater than the maximum output power of heating;
s3: and after the executed mode is determined, starting to execute an ignition program, and heating the system water according to the corresponding gear of the intelligent module to enable the system water to be heated to a set temperature range.
Preferably, in step S2, the specific operation steps of executing the bathroom gear under the bathroom maximum output power are: and executing a fan rotating speed current value gear and a gas valve opening current value gear under the limitation of the maximum output power of the bathroom gear.
Preferably, in step S2, the specific operation steps of executing the heating gear at the heating maximum output power are as follows: and executing a fan rotating speed current value gear and a gas valve opening current value gear under the heating gear under the limitation of the maximum output power of the heating gear.
Preferably, in the heating mode or the bathroom mode, the fan comprises a constant-speed fan, a two-gear variable-speed fan and a stepless speed-regulating fan;
when the fan is a constant-speed fan, the fan rotating speed current value gears of the fan in a heating or bathroom mode are the same, and the maximum gas valve opening current value gear in bathroom is larger than the maximum gas valve opening current value gear in heating;
when the fan is a two-gear variable speed fan, the high-gear rotating speed of the fan is executed when the bathroom mode is started, and the low-gear rotating speed of the fan is executed when the heating mode is started;
when the fan is a stepless speed regulating fan, the maximum current value gear of the fan rotating speed in the bathroom mode is larger than the maximum current value gear of the fan rotating speed in the heating mode.
Preferably, between step S1 and step S2, S12 is further included:
and acquiring the target temperature of the bathroom and the heating.
Preferably, between step S1 and step S2, S13 is further included:
acquiring the maximum output power of the bathroom and the maximum output power of heating;
according to the maximum output power of the bathroom, calculating the maximum current value gear of a bathroom fan and the maximum current value gear of a bathroom gas valve in a bathroom mode;
and calculating the maximum current value gear of the heating fan and the maximum current value gear of the heating gas valve in the heating mode according to the maximum heating output power.
Preferably, in step S3, when the bathroom mode is executed, the frequency signal fed back by the water flow sensor is obtained, and the bathroom water flow is calculated; acquiring the bathroom outlet water temperature fed back by the bathroom outlet water NTC, and comparing the bathroom outlet water temperature with the bathroom target temperature;
when the bathroom outlet water temperature is lower than the bathroom target temperature and the bathroom water flow is greater than the rated water flow of 1/2, executing the fan rotating speed and the gas valve opening degree under the bathroom maximum output power to perform fire burning;
when the bathroom outlet water temperature is lower than the bathroom target temperature and the bathroom water flow is less than the rated water flow of 1/2, executing the fan rotating speed and the gas valve opening degree under the bathroom maximum output power of 2/3, and carrying out middle fire combustion;
and when the bathroom outlet water temperature is higher than or close to the bathroom target temperature, executing the fan rotating speed and the gas valve opening degree under the bathroom output power corresponding to the bathroom outlet water temperature, and performing small-fire combustion.
Preferably, in step S3, when the heating mode is executed, the heating outlet water temperature fed back by the heating outlet water NTC or the heating inlet water temperature fed back by the heating inlet water NTC is obtained;
when the heating water outlet temperature or the heating water inlet temperature is lower than the heating target temperature, executing the fan rotating speed and the gas valve opening degree under the maximum heating output power, and performing big fire combustion;
and when the heating water outlet temperature or the heating water inlet temperature is higher than or close to the heating target temperature, executing the fan rotating speed and the gas valve opening degree under the heating output power corresponding to the heating water outlet temperature or the heating water inlet temperature, and performing small fire combustion.
Preferably, step S3 is followed by step S4:
acquiring whether a mode signal is released or not; if the mode is the release mode, closing the gas valve, blowing and removing residual air and gas in the combustion chamber after the fan to prevent deflagration, and stopping the water pump after delayed operation; otherwise, the operation of the steps is continuously executed to maintain the operation.
The second purpose of the invention is realized by adopting the following technical scheme:
the utility model provides a gas heating water heater, includes stove body, the control unit, fan, gas valve and detecting element, the control unit includes intelligent object, intelligent object is used for carrying out at the gear control of bathroom maximum output power and heating maximum output power, the control unit all with fan, gas valve, detecting element electric connection, detecting element includes that the heating is intake NTC, the heating is gone out water NTC, bathroom and is gone out water NTC and rivers sensor, the control unit still include the above-mentioned control method that can set up different power output of heating and bathroom.
Compared with the prior art, the invention has the beneficial effects that:
according to the control method, the heating furnace can change the output power of the heating furnace according to the starting type of the heating furnace by setting different output powers of the heating furnace and the bathroom, so that the optimal power output state is achieved when the heating furnace is used, the heating furnace and the bathroom are matched in different powers, energy and gas can be saved, and the use comfort of a user can be improved.
The control method of the invention enables the fan and the gas valve to have different maximum current values in the heating function or the bathroom function by limiting the maximum output power of the bathroom gear and the heating gear, wherein the maximum current values of the fan and the gas valve of the heating function are smaller than the maximum current values of the fan and the gas valve of the bathroom function; when the heating furnace operates the heating function, the controller can give the current value of the heating function of the fan and the gas valve, limit the maximum output power of heating to enable the operation power to be more in line with the heating requirement, and avoid the problem that the heating power exceeds the actual required power when the heating furnace operates the heating, so that the gas consumption is large and the energy is not saved; when the heating furnace operates the bath function, the controller can give current values of the fan and the gas valve for the bath function, so that the heating furnace can operate at the maximum power configured by the heating furnace when the bath function is started; therefore, the heating with low power can be realized, and the requirement for generating hot water can be provided for users.
Drawings
FIG. 1 is a first flowchart of a control method for setting different power outputs of heating and bathroom equipment according to the present invention, wherein the fan is a constant speed fan;
fig. 2 is a second flowchart of the control method for setting different power outputs of heating and bathroom equipment according to the present invention, wherein the fan is a two-speed variable speed fan or a stepless speed-regulating fan.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description of the present invention, it should be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.
Referring to fig. 1 and 2, a flow chart of a control method for setting different power outputs of heating and bathroom equipment according to a preferred embodiment of the present invention is shown, the control method includes the following steps:
s1: starting the gas heating water heater, performing self-checking verification, judging whether a starting condition is met or not, starting a safety protection program if the starting condition is not met, entering a standby state and triggering alarm, and entering the next step if the starting condition is met;
in the step, after the gas heating water heater is started and a starting signal is received in the system, initial self-checking is firstly carried out, such as whether temperature and pressure detection equipment is in normal detection, whether the water level of a heating water path system is in a normal range and the like, and when conditions are found not to meet requirements, the starting is prohibited and an alarm message is sent out to inform a user of processing.
S2: acquiring a bathroom target temperature and a heating target temperature;
in this step, a target temperature of the bathroom is inputted on a panel of the controller, so that the bathroom is heated to the set temperature in the bathroom mode. The target heating temperature is input to the panel of the controller, and the panel is heated to the set temperature in the heating mode. This step can also be skipped with an internal setting as the master and no user setting required.
S3: acquiring the maximum output power of the bathroom and the maximum output power of heating; according to the maximum output power of the bathroom, calculating the maximum current value gear of the bathroom fan and the maximum current value gear of the bathroom gas valve in the bathroom mode; and calculating the maximum current value gear of a heating fan and the maximum current value gear of a heating gas valve in a heating mode according to the maximum heating output power, wherein the maximum bathroom output power is greater than the maximum heating output power. In this embodiment, the maximum output power of the bathroom is 1.2-2 times of the maximum output power of the heating.
In this step, it can be understood that the maximum bathroom output power is the maximum bathroom fan power + the maximum bathroom gas valve power, and the maximum bathroom output power can be obtained by controlling the current values of the fan and the gas valve according to P-U-I, since the voltage is the rated voltage. Similarly, the maximum heating output power is equal to the maximum power of the fan during heating plus the maximum power of the gas valve during heating. Through this setting, the user can set for the maximum output power of bathroom or heating (nevertheless can not exceed the maximum rated power of heating stove self, generally can set up the biggest parameter value of heating and bathroom mode according to leaving the factory, go to propose the setting) according to building area and comfort in use requirement, when satisfying heating or bathroom demand, saves the gas, can improve the bathing travelling comfort simultaneously.
In the same way, understandably, the maximum current value gear of the fan and the maximum current value gear of the gas valve of the heating or bathroom can be set according to the inside of the product using area when the heating furnace leaves the factory, and the heating or bathroom is not required to be reset by the user, or the step is selected to be skipped, and the maximum current value gear of the fan and the maximum current value gear of the gas valve of the heating or bathroom set inside are operated.
S4: acquiring a water flow signal fed back by a water flow sensor, starting a bathroom mode if the water flow signal exists, executing a bathroom gear under the maximum output power of the bathroom gear, executing a rotating speed current value gear of a fan and an opening current value gear of a gas valve under the bathroom gear under the limitation of the maximum output power of the bathroom gear, otherwise, starting a heating mode, executing a heating gear under the maximum output power of heating, and executing a rotating speed current value gear of the fan and an opening current value gear of the gas valve under the heating gear under the limitation of the maximum output power of the heating gear, wherein the maximum output power of the bathroom is greater than the maximum output power of heating;
in the step, whether a water flow signal exists or not is detected to determine a starting mode (a bathroom mode or a heating mode), and according to the corresponding mode, the controller executes a fan current value gear at a fan maximum current value gear in the corresponding mode and a gas valve current value gear at a gas valve maximum current value gear. The opening degree of the gas valve is related to the rotating speed of the fan, the larger the rotating speed of the fan is, the larger the opening degree of the gas valve is, the smaller the rotating speed of the fan is, the smaller the opening degree of the gas valve is, so that the gas valve is matched with the fan to convey proper gas to be mixed with air, and the relationship between the rotating speed of the fan and the opening degree of the gas valve is input into a controller of the water heater in advance.
If in the bathroom mode, the fan starts the maximum rotating speed of the fan at the current value under the bathroom maximum current value, and the gas valve starts the maximum opening of the gas valve at the current value under the bathroom maximum current value, so that the maximum output power of the bathroom is controlled. Understandably, in the bathroom mode, the output power of the bathroom is enabled not to exceed the maximum output power by limiting the bathroom maximum output power, and the rotating speed of the fan and the opening degree of the gas valve are adjusted according to the temperature of the bathroom water. When bathroom temperature is less than the settlement temperature, the fan rotates with the maximum rotational speed of maximum current value gear, and the gas valve is opened with the maximum aperture of maximum current value gear to guarantee that the heating stove burns with the big fire under the maximum power of injecing, make low temperature bathroom water rapid heating up, and do not exceed the bathroom maximum power value of settlement. When the bathroom water temperature is higher than or equal to or close to the set temperature, the fan rotates at the rotating speed lower than the maximum current value gear, the gas valve is opened at the opening lower than the maximum current value gear, namely, the gas valve is adjusted according to the temperature difference (can be controlled according to the original temperature control mode), and the gas valve is changed from big-fire combustion to small-fire combustion so as to maintain the set temperature value, so that the bathroom water temperature has better comfort during bathing. When the water heater operates the bath function, the controller can give current values of the fan and the gas valve for the bathroom function, so that the water heater can operate at the maximum power configured for the water heater when the bathroom function is started; therefore, the heating with low power can be realized, and the requirement for generating the live hot water can be provided for users.
If in the heating mode, the fan starts the maximum rotating speed of the fan at the maximum heating current value, and the gas valve starts the maximum opening of the gas valve at the maximum heating current value, so as to control the maximum output power of heating. Understandably, in the heating mode, the rotating speed of the fan and the opening degree of the gas valve are adjusted according to the temperature of the heating water by limiting the maximum heating output power so that the output power of the heating is not more than the maximum output power. When the water heater operates a heating function, the controller can give the current value of the heating function of the fan and the gas valve, the maximum output power of heating is limited, the operation power of the water heater is enabled to meet the heating requirement, and the problem that the gas consumption is large and energy is not saved due to the fact that the heating power exceeds the actual required power when the water heater operates the heating is avoided.
In one embodiment, the fan comprises a constant-speed fan, a two-gear variable-speed fan and a stepless speed-regulating fan.
As shown in fig. 1, when the fan is a constant speed fan, the constant speed fan indicates that the fan has only one rotation speed, the rotation speed of the fan is the same when in a heating or sanitary mode, only the gas valve current value in the corresponding starting mode is executed in the program at this time, the maximum opening of the gas valve is controlled by setting the current value of the gas valve in two modes, and then the maximum output power of heating and sanitary is controlled, namely, the maximum power of the fan when in sanitary is equal to the maximum power of the fan when in heating, and the maximum power of the gas valve when in sanitary is greater than the maximum power of the gas valve when in heating or the maximum current gear of the gas valve opening when in sanitary is greater than the maximum current gear of the gas valve opening when in heating.
As shown in fig. 2, when the fan is a two-gear variable speed fan, the two-gear variable speed fan means that the fan can output two rotating speeds, and the controller executes a current value gear with a high-gear rotating speed of the fan and a large opening degree of the gas valve when the bathroom mode is started; when the heating mode is started, the controller executes current value gears with low-gear rotating speed of the fan and low opening degree of the gas valve, namely the current value gears of the rotating speed of the fan are divided into a current value of the rotating speed of the fan at a high gear and a current value of the rotating speed of the fan at a low gear,
when the fan is a stepless speed regulating fan, the stepless speed regulating fan means that the rotating speed of the fan can be changed along with the change of a current value, a bathroom mode controller is started to execute the current values of the fan and a gas valve at a bathroom gear, and a heating mode controller is started to execute the current values of the fan and the gas valve at a heating gear; the maximum output power of the heating and the bathroom can be respectively controlled by adjusting the rotating speed of the fan and controlling the opening degree of the gas valve by giving current values to the fan and the gas valve under corresponding modes to the controller of the heating and bathroom modes; the maximum current value gear of the fan rotating speed in the normal bathroom mode is larger than that in the heating mode.
S5: and after the executed mode is determined, starting to execute an ignition program, and heating the system water according to the corresponding gear of the intelligent module and the acquired data to enable the system water to be heated to a set temperature range.
In this step, the ignition procedure: the water pump, the fan, the gas valve and the ignition module are sequentially executed, and after ignition is successful, system water (heating water or bath water) is heated.
The specific operation steps of the step are as follows:
s50: when the bathroom mode is executed, frequency signals fed back by the water flow sensor are obtained, and the bathroom water flow is calculated; acquiring the bathroom outlet water temperature fed back by the bathroom outlet water NTC, and comparing the bathroom outlet water temperature with the bathroom target temperature; when the bathroom outlet water temperature is lower than the bathroom target temperature and the bathroom water flow is greater than the rated water flow of 1/2, executing the fan rotating speed and the gas valve opening degree under the bathroom maximum output power to perform fire burning; when the bathroom outlet water temperature is lower than the bathroom target temperature and the bathroom water flow is less than the rated water flow of 1/2, executing the fan rotating speed and the gas valve opening degree under the bathroom maximum output power of 2/3, and carrying out middle fire combustion; when the bathroom outlet water temperature is higher than or close to a bathroom target temperature (such as the bathroom outlet water temperature is +/-2-5 ℃), executing the fan rotating speed and the gas valve opening degree under the bathroom output power (the bathroom output power is smaller than the bathroom maximum output power) corresponding to the bathroom outlet water temperature, carrying out small-fire combustion, and maintaining the combustion at the bathroom target temperature.
In this step, the relationship between frequency and flow rate in the water flow sensor is an empirical formula of the pulse signal frequency: f is 8.1q -3 Wherein, f: frequency of pulse signal, H 2 (ii) a q: water flow, L/min; according to the detection of water flow and the bathroom outlet water temperature, different bathroom output power changes are adjusted, so that the outlet water temperature is stable, meanwhile, the power section is not changed by the inlet water temperature, and the requirement of high-power bathrooms is met.
S51: when the heating mode is executed, acquiring the heating water outlet temperature fed back by the heating water outlet NTC or the heating water inlet temperature fed back by the heating water inlet NTC; when the heating water outlet temperature or the heating water inlet temperature is lower than the heating target temperature, executing the fan rotating speed and the gas valve opening degree under the maximum heating output power, and performing big fire combustion; when the heating water outlet temperature or the heating water inlet temperature is higher than or close to the heating target temperature (such as the heating water outlet temperature or the heating water inlet temperature is plus or minus (2-5 ℃) of the heating target temperature), executing the fan rotating speed and the gas valve opening degree under the heating output power (the heating output power is smaller than the maximum heating output power) corresponding to the heating water outlet temperature or the heating water inlet temperature, and performing small fire combustion to maintain the heating target temperature combustion.
S6: acquiring whether a mode signal is released or not according to the requirement executed by a user; if the mode is a release mode, closing the gas valve, blowing and removing residual air and gas in the combustion chamber after the fan to prevent deflagration, and stopping the water pump after the water pump operates in a delayed mode (such as delayed for 1-3 min); otherwise, the operation of the steps is continuously executed to maintain the operation.
In another embodiment, the present invention further provides a gas-fired water heater, including a furnace body, a control unit, a fan, a gas valve, an igniter, a circulating water pump, a burner, a plate heat exchanger, and a detection unit, where the control unit includes an intelligent module, the intelligent module is used to execute gear control of maximum output power and maximum output power of heating in a bathroom, the control unit is electrically connected to the fan, the gas valve, the detection unit, the igniter, and the circulating water pump, the detection unit includes a heating water inlet NTC, a heating water outlet NTC, a bathroom water outlet NTC, and a water flow sensor, and the control unit further includes the control method capable of setting different power outputs of heating and bathroom.
During the use, when the bathroom demand, bathroom play water NTC gathers bathroom play water temperature to according to current play water temperature match carry out under the bathroom mode fan rotational speed and the gas valve aperture of maximum output, through giving the fan of heating and bathroom function and the different maximum current value of gas valve respectively in the controller procedure, wherein the fan of heating function and the maximum current value of gas valve will be less than the maximum current value of bathroom. When the heating stove operates the heating function, the controller can give the current value of fan and gas valve heating function, and the maximum output power who restricts the heating makes its operating power more accord with the heating demand, and heating power surpasss actual demand power and leads to the big not energy-conserving problem of gas consumption when avoiding operating the heating. When the heating furnace operates the bath function, the controller can give current values of the fan and the gas valve for the bath function, so that the heating furnace can operate at the maximum power configured by the heating furnace when the bath function is started; therefore, the heating with low power can be realized, and the requirement for generating the live hot water can be provided for users.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A control method capable of setting different power outputs of heating and bathroom is characterized by comprising the following steps:
s1: starting a gas heating water heater;
s2: acquiring a water flow signal fed back by a water flow sensor, starting a bathroom mode if the water flow signal exists, executing a bathroom gear under the maximum output power of a bathroom, otherwise, starting a heating mode, and executing a heating gear under the maximum output power of heating, wherein the maximum output power of the bathroom is greater than the maximum output power of heating;
s3: and after the executed mode is determined, starting to execute an ignition program, and heating the system water according to the corresponding gear of the intelligent module to enable the system water to be heated to a set temperature range.
2. The method as claimed in claim 1, wherein the step S2 includes the following steps: and executing a fan rotating speed current value gear and a gas valve opening current value gear under the limitation of the maximum output power of the bathroom gear.
3. The method for controlling different power outputs of heating and bathroom facilities as claimed in claim 2, wherein in step S2, the specific operation steps of performing the heating stage at the maximum heating output power are as follows: and executing a fan rotating speed current value gear and a gas valve opening current value gear under the heating gear under the limitation of the maximum output power of the heating gear.
4. The method for controlling different power outputs of heating and bathroom equipment according to claim 3, wherein in the heating mode or the bathroom mode, the fans comprise a constant speed fan, a two-gear variable speed fan and a stepless speed regulating fan;
when the fan is a constant-speed fan, the fan rotating speed current value gears of the fan in a heating or bathroom mode are the same, and the maximum gas valve opening current value gear in bathroom is larger than the maximum gas valve opening current value gear in heating;
when the fan is a two-gear variable speed fan, the high-gear rotating speed of the fan is executed when the bathroom mode is started, and the low-gear rotating speed of the fan is executed when the heating mode is started;
when the fan is a stepless speed regulating fan, the maximum current value gear of the fan rotating speed in the bathroom mode is larger than the maximum current value gear of the fan rotating speed in the heating mode.
5. The method for controlling different power outputs of configurable heating and bathroom facilities of claim 1, further comprising, between the step S1 and the step S2, the step S12:
and acquiring the target temperature of the bathroom and the heating.
6. The method for controlling different power outputs of configurable heating and bathroom facilities of claim 1, further comprising, between the step S1 and the step S2, the step S13:
acquiring the maximum output power of the bathroom and the maximum output power of heating;
according to the maximum output power of the bathroom, calculating the maximum current value gear of the bathroom fan and the maximum current value gear of the bathroom gas valve in the bathroom mode;
and calculating the maximum current value gear of the heating fan and the maximum current value gear of the heating gas valve in the heating mode according to the maximum heating output power.
7. The method of claim 1, wherein in step S3, when the bathroom mode is executed, the method obtains a frequency signal fed back by a water flow sensor to calculate a bathroom water flow; acquiring the bathroom outlet water temperature fed back by the bathroom outlet water NTC, and comparing the bathroom outlet water temperature with the bathroom target temperature;
when the bathroom outlet water temperature is lower than the bathroom target temperature and the bathroom water flow is greater than the rated water flow of 1/2, executing the fan rotating speed and the gas valve opening degree under the bathroom maximum output power to perform fire burning;
when the bathroom outlet water temperature is lower than the bathroom target temperature and the bathroom water flow is less than the rated water flow of 1/2, executing the fan rotating speed and the gas valve opening degree under the bathroom maximum output power of 2/3, and carrying out middle fire combustion;
and when the bathroom outlet water temperature is higher than or close to the bathroom target temperature, executing the fan rotating speed and the gas valve opening degree under the bathroom output power corresponding to the bathroom outlet water temperature, and performing small-fire combustion.
8. The method of claim 1, wherein in step S3, when the heating mode is executed, the method obtains the temperature of the outlet water fed back by the NTC or the temperature of the inlet water fed back by the NTC;
when the heating water outlet temperature or the heating water inlet temperature is lower than the heating target temperature, executing the fan rotating speed and the gas valve opening degree under the maximum heating output power to perform big fire combustion;
and when the heating water outlet temperature or the heating water inlet temperature is higher than or close to the heating target temperature, executing the fan rotating speed and the gas valve opening degree under the heating output power corresponding to the heating water outlet temperature or the heating water inlet temperature, and performing small fire combustion.
9. The method for controlling different power outputs of configurable heating and bathroom facilities of claim 1, further comprising step S4 after step S3:
acquiring whether a mode signal is released or not; if the mode is the release mode, closing the gas valve, blowing and removing residual air and gas in the combustion chamber after the fan to prevent deflagration, and stopping the water pump after delayed operation; otherwise, the operation of the steps is continuously executed to maintain the operation.
10. A gas heating water heater comprises a heater body, a control unit, a fan, a gas valve and a detection unit, wherein the control unit comprises an intelligent module, the intelligent module is used for executing gear control on the maximum output power of a bathroom and the maximum output power of heating, the control unit is electrically connected with the fan, the gas valve and the detection unit, the detection unit comprises a heating water inlet NTC, a heating water outlet NTC, a bathroom water outlet NTC and a water flow sensor, and the gas heating water heater is characterized in that the control unit further comprises the control method capable of setting different power outputs of heating and bathroom according to any one of claims 1 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115406101A (en) * | 2022-08-26 | 2022-11-29 | 合肥美的暖通设备有限公司 | Gas device, energy demand control method, electronic equipment and storage medium |
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