CN115183473B - Control method of hot water outlet device - Google Patents
Control method of hot water outlet device Download PDFInfo
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- CN115183473B CN115183473B CN202210755993.8A CN202210755993A CN115183473B CN 115183473 B CN115183473 B CN 115183473B CN 202210755993 A CN202210755993 A CN 202210755993A CN 115183473 B CN115183473 B CN 115183473B
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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
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
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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
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
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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
- F24H15/335—Control of pumps, e.g. on-off control
- F24H15/34—Control of the speed of pumps
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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
- F24H15/355—Control of heat-generating means in heaters
- F24H15/37—Control of heat-generating means in heaters of electric heaters
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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
- F24H15/395—Information to users, e.g. alarms
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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
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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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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
In order to solve the problem of matching the working power of the instant heating body and the water pump to correspondingly realize multi-gear temperature adjustment, the application provides a control method of the hot water outlet device, which comprises the water pump, the hot water storage device and the instant heating body, wherein the control method comprises the steps that the water pump is provided with a multi-power gear, namely the heating body is provided with a multi-power gear, and the hot water storage device has a heat preservation temperature T0; determining a water taking temperature T1; according to the water taking temperature T1, the working power of the water pump and the working power of the instant heating body are obtained, and the actual water outlet temperature T2 is detected; and adjusting the working power of the water suction pump and the instant heating body according to the actual water outlet temperature T2. According to the method, the instant heating body and the water pump are subjected to gear division according to the temperature difference between the water taking temperature and the actual water outlet temperature, the working modes of the instant heating body and the water pump are primarily judged according to the comparison of the water taking temperature and the actual water outlet temperature, and then specific power adjustment is performed on the instant heating body and the water pump according to the temperature difference. When the water taking temperature is higher than the heat preservation temperature, the working power of the water pump is adjusted according to the power gear, and when the water taking temperature is lower than the heat preservation temperature, the working power of the heating body is adjusted according to the power gear.
Description
Technical Field
The invention relates to the field of household water purification, in particular to a control method of a hot water outlet device.
Background
Because no air exists in the environment in a vacuum state, the air temperature does not exist, and the air temperature cannot be detected by means of gas molecular movement, the stability of temperature detection of the equipment in the vacuum environment is poor, the phenomenon that the contact and detection of flowing liquid can be better improved is adopted for drinking water equipment, but the condition that feedback is slower still exists in the temperature detection of the flowing liquid in the vacuum environment, and the equipment is slow in action and inaccurate in temperature regulation possibly exists according to the action of temperature regulation equipment.
At present, a plurality of water purifiers integrating heat purification exist, the water purifiers can heat in a machine body, the heated purified water is stored in a water storage tank, when a user needs hot water, the water is directly discharged from the water storage tank, along with the improvement of user experience, the water purifiers integrating heat purification need to realize a multi-gear water outlet function, in order to ensure water yield, a hot water storage tank with heat preservation temperature is generally arranged in the machine body, and the working power of a heating body and a water pump is regulated according to the temperature difference between the heat preservation temperature and the required water taking temperature. The temperature difference is large and small, the working power of the instant heating body and the water pump to be regulated can be regulated for a plurality of times, and the situation that the actual water outlet temperature and the water taking temperature are excessively different can occur. How to realize accurate adjustment of the actual outlet water temperature according to the temperature difference becomes a technical problem to be solved
The applicant invents a water supply device for a space capsule based on space kitchen projects participating in research and development, solves the water supply requirement of spacecrafts in the space capsule, and further researches the application of the water supply device to household water purification products, and particularly aims at a power adjustment scheme of a water suction pump, namely a heating body, in a hot water outlet device with a heating function corresponding to different temperatures.
Disclosure of Invention
In order to solve the problem that the working power of the water pump and the working power of the water pump are correspondingly matched to realize multi-gear temperature adjustment in the background technology, the application provides a control method of the hot water outlet device, which comprises the water pump, the hot water storage device and the hot water outlet device, wherein the control method comprises the steps that the water pump is provided with a multi-power gear, the hot water storage device is provided with a multi-power gear, and the hot water storage device has a heat preservation temperature T0; determining a water taking temperature T1; according to the water taking temperature T1, the working power of the water pump and the working power of the instant heating body are obtained, and the actual water outlet temperature T2 is detected; and adjusting the working power of the water suction pump and the instant heating body according to the actual water outlet temperature T2.
Optionally, the method for obtaining the working power of the water pump and the working power of the instant heating body according to the water taking temperature T1 comprises the following steps: executing a full outflow water program when the water taking temperature T1 is less than or equal to the heat preservation temperature T0; executing a speed control water outlet program when the water taking temperature T1 is more than the heat preservation temperature T0; in the whole outflow water procedure, the water pump works at the maximum power Pmax of the water pump, namely the heating body is closed; in the speed control water outlet program, the working power of the water pump and the instant heating body is adjusted in gear.
Optionally, in the speed control water outlet program, the method for adjusting the working power of the water pump and the instant heating body in gear comprises executing the working power of the water pump and the working power of the instant heating body at the water taking temperature T1, comparing the detected actual water outlet temperature T2 with the water taking temperature T1, and reducing the working power of the instant heating body according to the gear when the actual water outlet temperature T2 is greater than the water taking temperature T1; when the actual water outlet temperature T2 is less than the water taking temperature T1, the working power of the instant heating body is increased, and/or the working power of the water pump is reduced.
Optionally, when the actual water outlet temperature T2 is less than the water intake temperature T1, the method for increasing the working power of the instant heating element and/or reducing the working power of the water pump includes preferentially increasing the working power of the instant heating element according to the gear when the actual water outlet temperature T2 is less than the water intake temperature T1, detecting that the actual water outlet temperature T2 is still less than the water intake temperature T1 when the instant heating element is increased to the maximum power Wmax, and reducing the working power of the water pump according to the gear.
Optionally, the method for executing the working power of the water pump and the working power of the instant heating body at the water taking temperature T1 comprises the steps that the water pump starts to work at the maximum power Pmax of the water pump at any water taking temperature T1, and the heating body starts to work at the middle gear power.
Optionally, in the full outflow water program, the actual outlet water temperature T2' is detected, the temperature difference Δt2 between the actual outlet water temperature T2' and the intake water temperature T1 is determined, whether the temperature difference Δt2 is greater than a second preset temperature difference threshold is determined, and when the temperature difference Δt2 is greater than the second preset temperature difference threshold, the instant heating body is selectively turned on according to the actual outlet water temperature T2 '.
Optionally, when the temperature difference Δt2 is greater than a second preset temperature difference threshold, selectively starting the instant heating body according to the actual water outlet temperature T2', wherein when the actual water outlet temperature T2' < the water taking temperature T1, starting the instant heating body to work, and heating the water source in the pipeline; and when the actual water outlet temperature T2 'is larger than the water taking temperature T1, alarming the actual water outlet temperature T2'.
Optionally, when the temperature difference Δt2 is greater than a second preset temperature difference threshold, an alarm is given to the actual outlet water temperature T2'.
Optionally, the gear adjustment of the working power of the water pump and the instant heating body is performed according to the actual water outlet temperature T2, which includes determining a temperature difference Δt1 between the actual water outlet temperature T2 and the water intake temperature T1, and determining a gear adjustment mode of the working power of the water pump and the instant heating body according to the Δt1.
Optionally, when the temperature difference DeltaT 1 is within a first preset temperature difference threshold, the working power of the water pump and the instant heating body is sequentially adjusted in a gear progressive mode; when the temperature difference delta T1 is larger than a first preset temperature difference threshold value, the working power of the water pump and the instant heating body is subjected to gear jump adjustment.
The application provides a method for adjusting power of a water pump and an instant heating body according to water taking temperature. The water pump comprises a full-outflow water program and a speed-control water outlet program, when the water taking temperature is greater than or equal to the heat preservation temperature, the full-outflow water is executed, the water pump is regulated to the maximum power, the effect of reducing the water taking temperature is achieved, when the water taking temperature is less than the heat preservation temperature, the speed-control water outlet program is executed, and gear adjustment is carried out for the working power of the water pump and the instant heating body. According to the method, the instant heating body and the water pump are subjected to gear division according to the temperature difference between the water taking temperature and the actual water outlet temperature, the working modes of the instant heating body and the water pump are primarily judged according to the comparison of the water taking temperature and the actual water outlet temperature, and then specific power adjustment is performed on the instant heating body and the water pump according to the temperature difference. When the water taking temperature is higher than the heat preservation temperature, the working power of the water pump is adjusted according to the power gear, and when the water taking temperature is lower than the heat preservation temperature, the working power of the heating body is adjusted according to the power gear.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a waterway diagram of a hot water outlet device according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of matching temperature adjustment of a hot water outlet device, namely a heating body and a water suction pump according to an embodiment of the invention.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this embodiment, as shown in fig. 1, fig. 1 is a heating circulation water path, including a water pump 221, a hot water storage device 21, an instant heating body 222, a water supplementing valve 231, a water inlet and outlet path 4 and a water outlet path 30, wherein the instant heating body 222, the water pump 221, the hot water storage device 21 and the water inlet valve 231 are connected by water paths, and a closed circulation water path 20 is formed. The water enters the closed circulation waterway from the water inlet and outlet waterway 4, firstly enters the hot water storage tank 21 through the water supplementing valve 231, then is sent into the instant heating body 222 through the water suction pump 221 for heating, the heated water has two flow paths, namely, enters the hot water storage device 21 again through the water supplementing valve 231 for storage, and flows into the water outlet waterway 30 through the water inlet and outlet waterway 4, and the path is an outflow path directly flowing out of the hot water outlet device.
The control method of the hot water outlet device comprises the following steps: as shown in the figure 2 of the drawings,
s202, the water suction pump is provided with a multi-power gear, namely the heating body is provided with the multi-power gear, the hot water storage device has a heat preservation temperature T0, and the water taking temperature T1 is determined.
S204, according to the water taking temperature T1, the working power of the water pump and the working power of the instant heating body are obtained, the actual water outlet temperature T2 is detected, and according to the actual water outlet temperature T2, the working power of the water pump and the instant heating body is subjected to gear adjustment.
In this embodiment, different temperatures respectively correspond to different working powers of the water pump and the instant heating element, so the water pump and the instant heating element are respectively provided with various power gears, and different water taking temperatures are controlled and output by adjusting the power gears of the water pump and the instant heating element. In this embodiment, a hot water storage device is further provided, water in the hot water storage device has a heat preservation temperature T0, and when the water taking temperature T1 is determined, the working power of the water pump and the instant heating body is respectively adjusted according to the heat preservation temperature T0 of the hot water storage device. Specifically, the instant heating body and the water pump are subjected to power grading setting, the water outlet temperature obtained by checking the highest power of the instant heating body and the lowest power of the water pump is determined to be TG, wherein TG is the highest temperature reached by the hot water outlet device, the water outlet temperature obtained by checking the lowest power of the instant heating body and the highest power of the water pump is determined to be TD, the TD is the lowest temperature reached by the hot water outlet device, and a temperature adjustable interval [ TD, TG ] is established, so that if the required water outlet temperature is located in the temperature adjustable interval [ TD, TG ], the required water outlet temperature can be reached by adjusting the instant heating body and the water pump.
As an exemplary embodiment, the step of obtaining the working power of the water pump and the working power of the instant heating body according to the water taking temperature T1 includes executing a full outflow water program when the water taking temperature T1 is less than or equal to the heat preservation temperature T0; executing a speed control water outlet program when the water taking temperature T1 is more than the heat preservation temperature T0; in the whole outflow water procedure, the water pump works at the maximum power Pmax of the water pump, namely the heating body is closed; in the speed control water outlet program, the working power of the water pump and the instant heating body is adjusted in gear.
In this embodiment, the water intake temperature is compared with the heat preservation temperature, if the water intake temperature is less than or equal to the heat preservation temperature in the hot water storage device, the temperature in the hot water storage device is too high, and at this time, the whole water outflow procedure is executed, so that the water intake quantity of the water pump can be increased, the temperature is reduced, and the instant heating body is closed. If the water taking temperature is higher than the heat preservation temperature, the temperature in the hot water storage device is lower, the instant heating body needs to be started for cyclic heating, and the working power of the instant heating body is independently increased, so that the water taking temperature can not be guaranteed to be reached, and the water storage device and the instant heating body need to be regulated together according to the water suction pump.
As an exemplary embodiment, in the full outflow water program, the actual outflow water temperature T2' is detected, the temperature difference Δt2 between the actual outflow water temperature T2' and the intake water temperature T1 is determined, whether the temperature difference Δt2 is greater than a second preset temperature difference threshold is determined, and when the temperature difference Δt2 is greater than the second preset temperature difference threshold, the instant heating body is selectively turned on according to the actual outflow water temperature T2 '.
As an exemplary embodiment, when the temperature difference Δt2 is greater than a second preset temperature difference threshold, the instant heating body is selectively turned on according to the actual water outlet temperature T2', including, when the actual water outlet temperature T2' < the water intake temperature T1, turning on the instant heating body to work, and heating the water source in the pipeline; and when the actual water outlet temperature T2 'is larger than the water taking temperature T1, alarming the actual water outlet temperature T2'.
As an exemplary embodiment, when the temperature difference Δt2 is greater than a second preset temperature difference threshold, and the actual outlet water temperature T2' is alarmed.
When the heat preservation temperature T0 is obtained, the water taking temperature and the heat preservation temperature are subjected to preliminary temperature treatment, and then whether the water suction pump is independently regulated or the heating body and the water suction pump are required to be correspondingly regulated together is determined. When the water intake temperature is smaller than the heat preservation temperature, full-outflow water is executed, the water intake pump works at full power, at the moment, the actual water intake temperature is detected again, the temperature difference between the actual water intake temperature and the water intake temperature is checked, if the temperature difference is too large, on the basis of the water intake pump working at full power, the actual water intake temperature is still larger than the water intake temperature, the water intake pump can be considered to be at the maximum power, the actual temperature cannot be lowered, and at the moment, machine alarm is carried out. Here, it is determined that the machine has failed, and the cause of the failure needs to be checked. If the temperature difference is too large, and the actual outlet water temperature is smaller than the intake water temperature on the basis of the full-power operation of the water pump, the heating power of the instant heating body is considered to be insufficient due to the full-power operation of the water pump, so that the heating power of the instant heating body needs to be improved.
As an exemplary embodiment, in the speed-controlled water outlet program, the method for adjusting the working power of the water pump and the instant heating element in gear includes executing the working power of the water pump and the working power of the instant heating element at the water taking temperature T1, comparing the detected actual water outlet temperature T2 with the water taking temperature T1, and reducing the working power of the instant heating element according to the gear when the actual water outlet temperature T2 is greater than the water taking temperature T1; when the actual water outlet temperature T2 is less than the water taking temperature T1, the working power of the instant heating body is increased, and/or the working power of the water pump is reduced.
As an exemplary embodiment, when the actual water outlet temperature T2 is smaller than the water intake temperature T1, the working power of the instant heating body is preferentially increased according to the gear, and when the instant heating body is increased to the maximum power Wmax, the actual water outlet temperature T2 is still smaller than the water intake temperature T1, and the working power of the water pump is reduced according to the gear.
In this embodiment, if the water intake temperature T1 is greater than the insulation temperature in the hot water storage tank, it is necessary to perform the speed control water outlet program and adjust the instant heating body and the water suction pump. Firstly, working power of a water pump and an instant heating body is determined according to water taking temperature T1, the water pump and the instant heating body are respectively operated at the working power, the actual water outlet temperature is detected after a certain time, the actual water outlet temperature is compared with the water taking temperature, and when the actual water outlet temperature is greater than the water taking temperature set in the earlier stage, the working power of the instant heating body is reduced according to gears. In the above description, different temperatures correspond to different working powers of the instant heating body and the water pump, and when the actual water outlet temperature exceeds the water taking temperature, the heating power of the instant heating body is considered to be too high, and the working power of the instant heating body needs to be reduced according to units. If the actual water outlet temperature is smaller than the water taking temperature, the heating power of the instant heating body is considered to be insufficient or the water pumping power of the water pumping pump is too high, and the working power of the instant heating body or the working power of the smaller water pumping pump is required to be increased or the working power of the instant heating body is increased and the working power of the water pumping pump is reduced. Specifically, when the actual water outlet temperature is smaller than the water taking temperature, the working power of the instant heating body is preferentially increased according to the gear, if the working power of the instant heating body reaches the maximum power, if the actual water outlet temperature is still smaller than the water taking temperature, the water suction pump needs to be regulated, and the working power of the water suction pump is reduced according to the gear. The reason for firstly ensuring the constant pumping power of the water pump and regulating the working power of the instant heating body is to ensure the water yield, the water yield is preferentially ensured on the basis of being capable of reaching the water taking temperature, and the instant heating body is regulated on the basis of effectively ensuring the water yield.
As an exemplary embodiment, the method for executing the operation power of the water pump and the operation power of the instant heating body at the water intake temperature T1 includes that the water pump starts to operate at the water pump maximum power Pmax at any water intake temperature T1, i.e. the heating body starts to operate at the middle gear power.
In this embodiment, when determining the water intake temperature, the water pump pumps water with maximum power by default first, so as to ensure that the water output is satisfied, then the working power of the instant heating element is adjusted to be in a middle gear, and the actual temperature is checked after a certain time. Specifically, before the specific corresponding relation between the specific temperature and the working power of the water pump, namely the heating body is not obtained, the situation of the actually obtained water outlet temperature is checked under the conditions that the working power of the water pump is maximum, namely the working power of the heating body is equal, and then the water pump, namely the heating body is regulated correspondingly according to the obtained actual temperature. The power gear of the water pump is divided into three gears of low, medium and high, namely the power gear of the heating body is divided into three gears of low, medium and high, then the water pump power of the high gear is matched with the instant heating body power of the low gear to obtain the lowest water outlet temperature Td, the water pump power of the low gear is matched with the instant heating body power of the high gear to obtain the highest water outlet temperature Tg, an adjustable water taking temperature interval [ Td, tg ] is obtained, and if the water taking temperature is in the interval, the required water taking temperature can be obtained by correspondingly adjusting the instant heating body and the water pump.
As an exemplary embodiment, the method for adjusting the working power of the water pump and the instant heating element according to the actual outlet water temperature T2 includes determining a temperature difference Δt1 between the actual outlet water temperature T2 and the inlet water temperature T1, and determining a gear adjusting mode of the working power of the water pump and the instant heating element according to the Δt1. When the temperature difference delta T1 is within a first preset temperature difference threshold value, the working power of the water pump and the instant heating body is sequentially adjusted in a gear progressive mode; when the temperature difference delta T1 is larger than a first preset temperature difference threshold value, the working power of the water pump and the instant heating body is subjected to gear jump adjustment.
Specifically, working power of the instant heating body and working power of the water pump are respectively divided according to gear, for example, the adjusting method of the water pumping power of the water pump is to adjust duty ratio, water pumping quantity is adjusted according to the duty ratio, namely rated power of the heating body is 2100w, the water pumping pump and the instant heating body are divided into 10 gears, and the first gear is that: the working power of the heating body is set to 210w, and the duty ratio of the water pump is set to 10%; second gear: namely, the working power of the heating body is set to 420w, and the duty ratio of the water pump is set to 20%; third gear: namely, the working power of the heating body is set to 630w, and the duty ratio of the water pump is set to 30%; fourth gear: namely, the working power of the heating body is set to 840w, and the duty ratio of the water pump is set to 40%; fifth gear: namely, the working power of the heating body is set to 1050w, and the duty ratio of the water pump is set to 50%; sixth gear: namely, the working power of the heating body is set to 1260w, and the duty ratio of the water pump is set to 60%; seventh gear: namely, the working power of the heating body is 1470w, and the duty ratio of the water pump is 70%; the working power of the eighth gear, namely the heating body, is set to 1680w, and the duty ratio of the water pump is set to 80%; the working power of the ninth gear, namely the heating body, is set to 1890w, and the duty ratio of the water pump is set to 90%; the tenth gear, i.e. the working power of the heating element, is set to 2100w and the duty cycle of the suction pump is set to 100%. Then, determining a temperature variation difference value between each gear, wherein the temperature variation difference value is a first preset temperature difference threshold value, and it is understood that the first preset temperature difference threshold value is related to the numerical value of gear division, namely: namely, the temperature change difference value between the hot body and each gear of the water suction pump is set as a first preset temperature difference threshold value. The specific first preset temperature difference threshold may be an average value of temperature differences of each gear, which is not limited herein. If the temperature difference delta T1 between the actual water outlet temperature T2 and the water taking temperature T1 is within the temperature change difference, the working power of the water pump and the instant heating body is sequentially regulated according to the gear. If the temperature difference DeltaT 1 is larger than the set temperature change difference, the working power of the water pump, namely the heating body, needs to be regulated by a gear jump.
In this embodiment, the water in the hot water storage device needs to have a certain temperature, as shown in fig. 1, that is, a closed circulation water path is formed among the hot body, the water pump, the hot water storage device and the water supplementing valve, and a heating circulation water path is also formed in the closed circulation water path, that is, between the hot body and the hot water outlet device. The water temperature detection of the water outlet of the instant heating body is set at the water outlet position of the instant heating body, the water temperature detection in the tank is set in the hot water storage device, the heat preservation temperature T0 is set in the heating circulation waterway, when the water temperature of the water outlet of the instant heating body reaches the heat preservation temperature T0, the instant heating body is firstly closed, and then the water suction pump is closed after a certain time, so that the instant heating body is prevented from dry heating, and the service life of the instant heating body is shortened. When the water temperature in the tank of the hot water outlet device is lower than the heat preservation temperature T0, the circulating heating is considered to be required to be started. Specifically, the water suction pump is started first, water in the closed circulation waterway is moved, water in the hot water storage tank is fully mixed, then the tank bottom temperature of the hot water storage tank is detected again, if the tank bottom temperature is lower than the heat preservation temperature T0, the heating circulation is considered to be started, and the instant heating body is started.
Preferably, the in-tank water temperature detection device is arranged at the bottom of the hot water storage tank, and the water inlet of the hot water storage tank is arranged above, namely the water outlet of the heating body is connected with the water inlet of the hot water storage tank, so that hot water in the hot water storage tank is generally stored above, and cold water is stored below, so that the position with the lowest in-tank water temperature is at the bottom of the hot water outlet tank. The soak temperature may be a user-defined temperature. Of course, the temperature of the hot water outlet tank can be regarded as the water inlet temperature of the instant heating body, so the temperature detection can also be arranged at the water inlet position of the instant heating body.
Specifically, in this embodiment, the heating water storage device is a heat preservation tank, the heating circulation water path includes a circulation preheating mode, the temperature of the bottom of the heat preservation tank determines whether to enter the circulation preheating mode, that is, the outlet water temperature of the heating body determines whether to jump out of the circulation preheating mode. Because the water flow is guided, in the circulating waterway, except for the condition that the heat preservation tank is filled with water for the first time, the water inlet of the heat preservation tank is connected with the water outlet of the heat preservation tank, and the water outlet of the heat preservation tank is connected with the water inlet of the heat preservation tank, so that the water heated by the heat preservation tank enters from the upper part of the heat preservation tank, the water temperature at the tank bottom in the heat preservation tank is the lowest, and the temperature detection is selected to be arranged at the tank bottom of the heat preservation tank. The water outlet end of the heating body is communicated with the water inlet of the heat preservation tank and is also connected with the water outlet waterway 30 through the inlet and outlet pipeline 4. In this embodiment, the inlet and outlet pipe 4 is a water inlet pipe that communicates the water inlet module with the thermal insulation tank when replenishing water into the thermal insulation tank, and is a water outlet pipe that communicates the water outlet module with the thermal insulation tank when delivering water to the water outlet module.
As an exemplary embodiment, the water supply system further comprises a first water supply mode, wherein the first water supply mode is entered when the instant heating water dispenser is powered on for the first time, a water supply valve is opened, and the first water supply mode is completed and the circulating preheating mode is entered when the heat preservation tank is in a water full state. When a user takes hot water, the water supplementing valve is closed, and the water pump pumps the water in the heat preservation tank into the inlet and outlet pipelines, and then the water enters the water outlet waterway through the inlet and outlet pipelines.
Optionally, the outlet water temperature of the instant heating element is also provided with a second preset temperature value, if the outlet water temperature of the instant heating element exceeds the second preset temperature value, the instant heating element is considered to have abnormal heating, the inlet water outlet water of the instant heating element is also provided with a temperature threshold interval, the temperature threshold interval is 20-40 ℃, and when the temperature difference exceeds the temperature threshold, the instant heating element is considered to have faults.
In this embodiment, the control method of the hot water outlet device further includes a method for adjusting the preset power of the instant heating body and the water pump based on voltage change. The specific method comprises the following steps: acquiring a water inlet temperature and a target water outlet temperature; determining a first calibrated heating power of the instant heating body and a first calibrated pumping power of the pumping device based on the water inlet temperature, the target water outlet temperature and a corresponding preset calibration result; water is discharged by the first calibration heating power and the first calibration pumping power, and a water outlet temperature parameter in the water outlet process is obtained; adjusting the first calibrated heating power and/or the first calibrated pumping power based on the water outlet temperature parameter to obtain actual heating power and/or actual pumping power so that the water outlet temperature parameter approaches to a preset temperature parameter; the preset temperature parameter is determined based on the first calibrated heating power and the first calibrated pumping power.
Optionally, testing the heating power of the instant heating device and the pumping power of the pumping device from a plurality of different preset temperatures to the instant heating device corresponding to a plurality of different target water outlet temperatures before leaving the factory, and storing the determined relation between the heating power of the instant heating device and the pumping power of the pumping device, which are heated to the plurality of different target water outlet temperatures, in a memory as a calibration result; optionally, the preset relation may include a table determined based on a preset temperature, a heating power of the instant heating device corresponding to the target water outlet temperature, and a pumping power of the pumping device, and the table is used as a preset calibration result; the method can also comprise the step of taking the function relation determined based on the preset temperature, the heating power of the instant heating device corresponding to the target water outlet temperature and the water pumping power of the water pumping device as a preset calibration result; the heating power and the water pumping power corresponding to each preset heating interval in the heating process can be determined based on the preset temperature, the heating power of the instant heating device corresponding to the target water outlet temperature and the water pumping power of the water pumping device, and the heating power and the water pumping power corresponding to each preset heating interval in the heating process are determined to be used as preset calibration results; the heating power and the pumping power corresponding to each preset time interval when each time length value in the heating process is the preset time length value can be determined based on the preset temperature, the heating power of the instant heating device corresponding to the target water outlet temperature and the pumping power of the pumping device; it can be understood that the heating power and the pumping power may be average heating power and average pumping power in a period of time, or may be instantaneous heating power and instantaneous pumping power acquired based on time sequence, which is not particularly limited herein; when the instant heating water outlet machine is used for discharging water, the target water outlet temperature and the water inlet temperature of the instant heating water outlet machine are obtained, and the first calibrated heating power of the instant heating device and the first calibrated pumping power of the pumping device are determined based on the water inlet temperature, the target water outlet temperature and corresponding preset calibration results. The preset heating interval can be 5-10 ℃ and preferably 5 ℃, so that the whole target water outlet time can be subdivided and zoned as much as possible, and the water outlet temperature possibly required by a user can be covered as much as possible. Checking the adjustment conditions of heating power and pumping power in a certain heating interval, and compartmentalizing and regionalizing the target outlet water temperature, so that each temperature section has the corresponding heating power and pumping power, and the power adjustment of the whole heating process is perfected.
When the water outlet heating rate is greater than the preset heating rate, increasing the pumping power of the pumping device to obtain the actual pumping power; when the water outlet heating rate is smaller than the preset heating rate, increasing the heating power of the instant heating device to obtain the actual heating power; the technical effect that the outlet water temperature parameter approaches to the preset temperature parameter is achieved.
As an alternative embodiment, said increasing the power of the pumping device comprises: determining a temperature rise rate value of the discharged water; increasing the adjusting gradient of the pumping power of the pumping device. As an alternative embodiment, the step of increasing the gradient of adjustment of the pumping power of the pumping device comprises: determining a second calibrated pumping power of the pumping device corresponding to the current water outlet temperature rise rate value based on the water outlet temperature rise rate value and referring to the preset calibration result; and taking the difference value of the second calibrated pumping power and the first calibrated pumping power as an adjustment gradient of the pumping power of the pumping device, and adjusting the pumping power of the pumping device at least once.
With the technical scheme, when the water outlet temperature rising rate is larger than the preset temperature rising rate, the water outlet temperature rising rate value is determined. After determining the water outlet heating rate value, as an optional embodiment, the water outlet heating rate value may be substituted into calibration results of a plurality of calibration pumping powers of the instant heating device generated by the water inlet temperature and the target water outlet temperature to determine a second calibration pumping power corresponding to the current water outlet heating rate value, where it is understood that the second calibration pumping power is smaller than the first calibration pumping power; in order to enable the water outlet temperature parameter to approach to a preset temperature parameter, the difference value of the second calibrated water pumping power and the first calibrated water pumping power is used as an adjusting gradient for increasing the water pumping power of the water pumping device, and the water pumping power of the water pumping device is adjusted at least once so that the water outlet heating rate approaches to a preset heating rate.
When the water outlet heating rate is larger than the preset heating rate, checking the pumping power of the pumping device corresponding to the water outlet heating rate, and setting the pumping power as the second calibrated pumping power. It can be understood that the preset calibration result can be a table established in the corresponding relation between the water outlet temperature rising rate and the water pumping power and heating power, or a table established in the corresponding relation between the water outlet temperature and the water pumping power and heating power. In this embodiment, the preset calibration result is a table of the corresponding relationship between the outlet water temperature and the pumping power, and the heating power.
Specifically, firstly, determining the pumping power and the heating power corresponding to the pumping device and the instant heating device according to the target water outlet temperature, wherein the pumping power is taken as the first calibration pumping power, when the first calibration pumping power is acted on the pumping device, then, finding that the actual water outlet temperature is higher than the target water outlet temperature after a certain time, searching the pumping power corresponding to the actual water outlet temperature in a preset calibration result, positioning the pumping power to the second calibration pumping power, and taking the pumping power into consideration, wherein the added adjustment gradient is the difference value between the second calibration pumping power and the first calibration pumping power. It can be understood that the high water outlet temperature corresponds to low pumping power, so that the actual water outlet temperature is higher than the target water outlet temperature, so that the second calibrated pumping power corresponding to the preset calibration result is smaller than the first calibrated pumping power, and the difference value of the two is taken as the adjustment gradient, and the pumping power of the pumping device is increased. Therefore, the reverse regulation is performed for the actual water outlet temperature that is too high, and the higher the actual water outlet temperature is, the more the pumping power needs to be increased. Through the technical scheme, the technical effect that the outlet water temperature parameter approaches to the preset temperature parameter is achieved.
According to the temperature control device, the situation that the device is slow in action and inaccurate in temperature control possibly exists according to the action of the temperature control device in the prior art is improved, the action state of the device is improved through optimization of an electric control program, the temperature control accuracy of the liquid split device in a vacuum environment is improved, the temperature detection method is applied to household drinking water products by the aid of the temperature control device, the temperature detection method can be more accurate under the air environment, reasonable adaptation of the action and the temperature rising state of the device can be achieved after liquid temperature feedback, and the temperature control accuracy of the household drinking water products is effectively improved.
As an alternative embodiment, increasing the heating power of the instant heating device comprises: determining a current heating gear based on the first heating power; and lifting the heating gear at least once by the current heating gear.
For the above technical solution, the final outlet water temperature may be lower than the target outlet water temperature set by the user; therefore, when the water outlet heating rate is larger than the preset heating rate, the heating gear of the instant heating device corresponding to the current first heating power is determined. After the heating gear of the instant heating device corresponding to the current first heating power is determined, the current heating gear is used for at least lifting the heating gear once, so that the heating power of the instant heating device is increased, the instant heating device supplies more heat to water under the current water outlet power, and the water outlet heating rate is increased, so that the water outlet heating rate approaches to the preset heating rate. Through the technical scheme, the technical effect that the outlet water temperature parameter approaches to the preset temperature parameter is achieved.
In this embodiment, a method for calculating the water quantity of the hot water storage device is further included. As an alternative embodiment, the working power of the water pump determines the water amount of water pumping, that is, the working power of the heat body determines the heating temperature, and the working powers of the water pump and the heat body can be matched according to the required water taking temperature, wherein different working powers are respectively applied to different water taking temperatures, that is, the working power to be applied is the preset power w. It is understood that the preset power w of the water pump, i.e. the heating body, includes the preset power of the water pump and the preset power of the heating body, and the preset power may include the applied voltage, current, etc. affecting the working parameters of the water pump, i.e. the heating body.
The method comprises the steps of determining preset power w of a water pump and an instant heating body according to water taking temperature T1, applying the preset power w to the instant heating body and the water pump, and giving a certain early reaction time to the water pump and the instant heating body, wherein the early reaction time ensures that the water pump and the instant heating body can normally work at the preset power w, and the early reaction time is a first preset time T3 which can be 3-8s, preferably 5s. After the first preset time, namely the outlet water temperature of the heating body tends to be stable, checking the actual temperature T2 at the moment, and if the actual temperature is not equal to the pre-preset water taking temperature T1, considering that the preset power applied to the heating body and the water suction pump needs to be adjusted, and checking the actual temperature of the outlet water of the heating body after the adjustment.
When the hot water outlet device outputs water, timing is started, and at the moment, although the actual temperature of the hot water outlet of the hot water body does not reach the water taking temperature, the water outlet of the hot water storage device is also in the process of continuously adjusting the hot water body and the water suction pump, so that the water quantity in the process of adjusting the power of the hot water body and the water suction pump is needed to be calculated in order to calculate the water quantity accurately, and at the moment, the timing is needed to be started when the hot water outlet device outputs water. It can be understood that under different water outlet temperatures, the working power of the water pump is also different, and the water outlet rate of the hot water outlet device is also different when the working power of the water pump is different, so that the hot water outlet device starts timing, the time that the water pump works at different working powers under different water outlet temperatures needs to be recorded, and the water outlet amount can be conveniently calculated respectively.
When the actual temperature T2 of the outlet water of the instant heating body is equal to the water taking temperature T1, the current adjusting time of the water suction pump is recorded as T1. The adjusting time refers to the time when the actual water outlet temperature is not equal to the water taking temperature, and the water in the adjusting time can flow out of the hot water outlet device even though the water outlet temperature of the heating body is not equal to the water taking temperature. Because the water is pumped out from the hot water storage device by the water pump, then is sent into the instant heating body to be heated and then directly flows out through the water outlet of the instant heating body, the temperature measurement can be carried out at the water outlet of the instant heating body, the water pump, the instant heating body, also carry out the adjustment of the working power in the process of adjusting the actual water outlet temperature, and the water quantity recording is also needed in the process. When the hot water outlet device starts to outlet water, the hot water outlet device is marked to start to outlet water, the water outlet quantity of the hot water outlet device can be regarded as the water pumping quantity of the water pumping pump, and the working time of the water pumping pump under different working powers is required to be recorded before the actual outlet water temperature is not equal to the preset temperature, wherein the adjusting time t1 comprises the working time of the water pumping pump before the actual outlet water temperature is equal to the preset temperature, and the total pumping quantity of the water pumping pump is Q1 in the adjusting time t1. The Q1 is obtained by multiplying the corresponding pumping time of the pumping pump under different pumping powers, namely different pumping flow rates. When the actual temperature T2' is equal to the water taking temperature T1, the working time T2 of the water pump is recorded again, and the water pumping quantity Q2 is obtained by multiplying the water pumping rate by T2. At this time, the water extraction amount q=q1+q2 at the single intake temperature T1 means the sum of the adjustment flow rate in the actual temperature adjustment process and the outflow flow rate when the intake temperature is maintained. Accumulating for multiple times The amount of water to be pumped Σq=q+q' +q "+ … … +q at the water temperature T1 n The method comprises the steps of carrying out a first treatment on the surface of the When the water pumping quantity sigma Q of the water pumping pump reaches the preset water quantity Q, the hot water storage device starts to supplement water.
The embodiment of the application discloses a water quantity calculation method for respectively executing a water taking method at a single water taking temperature according to the preset requirements of a water pump, namely a heating body at different water taking temperatures, wherein the water quantity calculation method comprises the step of correcting the water quantity before the required temperature is reached. The water intake procedure includes: firstly, determining preset power of a water pump, namely a heating body according to a set water taking temperature, setting the water pump, namely the heating body, working with the preset power, checking the actual temperature of water after a certain preset time, continuously adjusting the working power of the water pump, namely the heating body according to the difference between the actual temperature and the preset temperature, and detecting the temperature again until the actual temperature is equal to the preset temperature. Simultaneously calculating water yield in the temperature regulation process of water taking, and setting the water yield in the regulation process before the actual temperature reaches the preset temperature as Q 1 The water yield after reaching the actual temperature is set as Q 2 Thus, the single water intake quantity comprises the sum of the water output quantity when the temperature does not reach the preset temperature and the water output quantity when the temperature reaches the preset temperature, and when the single water intake quantity reaches a certain water quantity, the water supplementing program of the hot water storage device is started. The method adopted by the method does not need to set electrical elements such as a water quantity detection device or a flowmeter, only needs to calculate the actual water yield, and avoids water quantity false detection caused by failure of the water meter and the electric element. And the water quantity correction of the actual water outlet quantity is added, so that the water quantity leakage meter which only obtains the water quantity when the water outlet temperature reaches the required temperature is prevented. Normally, for the demand of different water intaking temperatures, the hot water outlet device can all possess real-time temperature regulation function, and the condition that the early initial water outlet temperature did not reach preset temperature can appear at temperature regulation's in-process, so in calculating hot water storage device's actual play water, take into account the regulation flow when early temperature did not reach, add the play water flow when the temperature reached on the basis of regulation flow and decide to actual single play water flow, further accurate hot water storage device's play water flow.
The method for adjusting the working power of the water pump, namely the heating body according to the actual temperature and detecting the actual temperature T2' again comprises the steps of comparing the actual temperature with the water taking temperature after checking the actual temperature of water discharged by the heating body, and determining the temperature deviation delta T3; and on the preset power w of the water taking temperature, acquiring preset power w1 under the temperature deviation delta T3, adjusting the preset power w1 to the preset power w in combination with the temperature deviation delta T3, taking the adjusted power as working power w ', and adopting working parameters of a water pump and an instant heating body under the working power w' to achieve the water temperature of the water taking temperature. The actual temperature obtained according to the preset power of the water pump and the instant heating body is not the preset water taking temperature, so that the working power of the water pump and the instant heating body also needs to be adjusted, the obtained actual temperature is checked, the temperature difference between the actual temperature and the preset water taking temperature is determined, and the corresponding adjusting power of the instant heating body and the water pump is determined according to the temperature difference. Here, in this embodiment, the power adjustment gradients of the heating element and the water pump are determined according to the temperature difference, and only the determined adjustment gradients are required to be added to the preset power, or the adjustment gradients are reduced on the preset power, so that the operational power of the heating element and the water pump is prevented from being adjusted integrally again. It will be appreciated that either or both may be adjusted separately or simultaneously during the adjustment process for both. When one of the two independent adjustments is selected, the working power of the instant heating body can be controlled to be unchanged, the working power of the water pump is adjusted, if the temperature is higher, the working power of the water pump is increased, and if the temperature is lower, the working power of the water pump is reduced.
As an exemplary embodiment, the method for adjusting the preset power w1 to the preset power w according to the preset power w1 under the temperature deviation Δt and combining the temperature deviation Δt, and taking the adjusted power as the working power w' includes, when Δt=t2-T1 > 0, increasing the working power of the water pump, and/or decreasing the working power of the instant heating body; when DeltaT=T2-T1 is less than 0, the working power of the instant heating body is increased, and/or the working power of the water suction pump is reduced; when Δt=t2-t1=0, operate at the preset power w of the water intake temperature T1. The method for increasing the working power of the instant heating element and/or reducing the working power of the water pump when DeltaT=T2-T1 is less than 0 comprises the steps of increasing the working power of the instant heating element with the gradient of temperature deviation DeltaT, and reducing the working power of the water pump when the working power of the instant heating element is maximum and the increasing value of the working power of the instant heating element does not meet the gradient of temperature deviation DeltaT.
As an exemplary embodiment, a maximum water output Q of the hot water storage device is determined max The water pumping quantity Q reaches the maximum water output Q at the single water taking temperature T1 max And when the water taking program at the single water taking temperature T1 is stopped, the hot water storage device starts to supplement water. When the sigma Q reaches the first preset water quantity Q, the water taking program at the single water taking temperature T1 is not completed, and after the water taking program at the single water taking temperature T1 is executed, the hot water storage device starts water supplementing. The preset water quantity Q is the maximum water yield Q max The maximum water yield Qmax is 1.5-5L.
In this embodiment, the hot water outlet device includes two water replenishing modes, a half tank water replenishing mode and a forced water replenishing mode. The half-tank water supplementing mode comprises the steps that when the water quantity in the hot water storage device reaches 50% of the total capacity of the water storage device, if the hot water outlet device does not outlet water, the water supplementing mode is carried out, and if the hot water outlet device is discharging water, the water supplementing mode is carried out after the water outlet is finished. It is understood that the preset water quantity Q is provided in the present application, wherein the preset water quantity Q can be 10% -90% of the total capacity of the water storage device, namely the maximum water yield Q max In the embodiment, the preset water yield q is 50%. The forced water replenishing mode comprises that a lowest water level detection is arranged in the hot water storage device, when the water in the hot water storage device is at the lowest water level, no water exists in the hot water storage device by default, and no matter whether the hot water outlet device is discharging water or not, forced water replenishing is needed to be carried out on the hot water storage device. When the single water intake exceeds the maximum water output Q max And the hot water outlet device does not discharge water any more, and the hot water storage device directly enters a water supplementing mode. In the embodiment, although the hot water storage device has no heating function, water in the hot water storage device is pumped into the instant heating body to prevent the instant heating body from generating dry heating phenomenon It is necessary to ensure that a certain amount of water is always maintained in the hot water storage device. When the single water outlet exceeds the maximum water outlet quantity Q max In order to ensure the quantity of hot water in the hot water storage tank, the water outlet must be interrupted and the water supplementing mode must be started.
As an exemplary embodiment, the method for obtaining the pumping water quantity q=q1+q2 at the single intake temperature T1 includes calculating the pumping water quantity Q1 at a first preset time T1 and the working power of the pumping pump at a preset power w; and calculating the water pumping quantity Q2 according to the working power of the water pumping pump under the working power w' and the first preset time t 2. After the hot water storage device supplements water, the water in the hot water storage device is kept at a heat preservation temperature T0, and the preset power w required by the water pump, namely the heating body, at different water taking temperatures is determined according to the heat preservation temperature T0. It can be understood that the working power of the water pump is related to the water pumping rate, so that at different water taking temperatures, the working power of the water pump is different, the corresponding water pumping rates are different, and the water pumping rate corresponding to different working powers can be obtained by finding the water quantity within a certain time and removing the water quantity according to the water pumping rate.
Claims (10)
1. The control method of the hot water outlet device is characterized by comprising a water suction pump, a hot water storage device and an instant heating body, and comprises the following steps of: the water suction pump is provided with a multi-power gear, and the instant heating body is provided with a multi-power gear;
The hot water storage device has a heat preservation temperature T0;
determining a water taking temperature T1;
according to the water taking temperature T1, the working power of the water pump and the working power of the instant heating body are obtained, and the actual water outlet temperature T2 is detected;
the working power of the water suction pump and the instant heating body is subjected to gear adjustment according to the actual water outlet temperature T2;
when the hot water outlet device outputs water, acquiring a water taking temperature T1 and a heat preservation temperature T0 of the hot water outlet device, and determining a first calibrated heating power of the instant heating body and a first calibrated pumping power of the water pump based on the heat preservation temperature T0, the water taking temperature T1 and corresponding preset calibration results;
obtaining a water outlet heating rate according to the actual water outlet temperature T2, and increasing the pumping power of the pumping pump when the water outlet heating rate is greater than a preset heating rate, wherein the increasing the pumping power of the pumping pump comprises the following steps: determining a water outlet heating rate value, and increasing the adjustment gradient of the pumping power of the pumping pump;
the step of increasing the gradient of adjustment of the pumping power of the pumping pump comprises the following steps: determining a second calibrated pumping power of the pumping pump corresponding to the current water outlet temperature rise rate value based on the water outlet temperature rise rate value and referring to the preset calibration result; and taking the difference value of the second calibrated pumping power and the first calibrated pumping power as the adjustment gradient of the pumping power of the pumping pump.
2. The control method according to claim 1, wherein the obtaining of the operating power of the pump and the operating power of the instant heating body according to the intake temperature T1 includes executing a total outflow program when the intake temperature T1 is equal to or less than a heat preservation temperature T0;
executing a speed control water outlet program when the water taking temperature T1 is more than the heat preservation temperature T0;
in the whole outflow water program, the water pump works at the maximum power Pmax of the water pump, and the instant heating body is closed;
in the speed control water outlet program, the working power of the water suction pump and the instant heating body is subjected to gear adjustment.
3. The control method according to claim 2, characterized in that in the speed control water outlet program, the working powers of the water pump and the instant heating element are adjusted in gear, comprising, executing the working powers of the water pump and the instant heating element at the water intake temperature T1, comparing with the water intake temperature T1 according to the detected actual water outlet temperature T2, reducing the working power of the instant heating element in gear when the actual water outlet temperature T2 > water intake temperature T1, increasing the working power of the instant heating element when the actual water outlet temperature T2 < water intake temperature T1, in particular determining the current heating gear based on the first heating power, lifting the heating gear at least once with the current heating gear, and/or reducing the working power of the water pump; and in the gear adjusting process, the pumping power of the water pump is ensured to be unchanged, and the working power of the instant heating body is preferentially adjusted.
4. A control method according to claim 3, characterized in that when the actual water outlet temperature T2 < water intake temperature T1, the working power of the instant heating body is increased, and/or the working power of the water pump is decreased, comprising, when the actual water outlet temperature T2 < water intake temperature T1, preferentially increasing the working power of the instant heating body in terms of gear, when the instant heating body is increased to the maximum power Wmax, detecting that the actual water outlet temperature T2 is still smaller than the water intake temperature T1, decreasing the working power of the water pump in terms of gear, and the water pump pumping power is adjusted by adjusting the water pumping amount according to the duty ratio.
5. A control method according to claim 3, wherein the operation power of the water pump and the operation power of the instant heating body are performed at the water intake temperature T1, and wherein the water pump starts to operate at the water pump maximum power Pmax and the instant heating body starts to operate at the intermediate range power at any water intake temperature T1.
6. The control method according to claim 2, wherein in the total outflow water program, an actual outflow water temperature T2' is detected, a temperature difference Δt2 between the actual outflow water temperature T2' and the intake water temperature T1 is determined, whether the temperature difference Δt2 is greater than a second preset temperature difference threshold is determined, and when the temperature difference Δt2 is greater than the second preset temperature difference threshold, the instant heating element is selectively turned on according to the actual outflow water temperature T2 '.
7. The control method according to claim 6, wherein when the temperature difference Δt2 is greater than a second preset temperature difference threshold, the instant heating body is selectively turned on according to the actual outlet water temperature T2', and when the actual outlet water temperature T2' < the intake water temperature T1, the instant heating body is turned on to operate, and the water source in the pipeline is heated and warmed;
and when the actual water outlet temperature T2 'is larger than the water taking temperature T1, alarming the actual water outlet temperature T2'.
8. The control method according to claim 6, characterized in that when the temperature difference Δt2 is greater than a second preset temperature difference threshold, and the actual outlet water temperature T2' is alerted.
9. The control method according to any one of claims 1 to 8, characterized in that the step adjustment of the operating power of the water pump and the instant heating element is performed according to the actual water outlet temperature T2, comprising determining a temperature difference Δt1 between the actual water outlet temperature T2 and the water intake temperature T1, and determining a step adjustment manner of the operating power of the water pump and the instant heating element according to Δt 1.
10. The control method according to claim 9, wherein,
when the temperature difference delta T1 is within a first preset temperature difference threshold, the working power of the water pump and the working power of the instant heating body are sequentially adjusted in a gear progressive mode;
When the temperature difference delta T1 is larger than a first preset temperature difference threshold value, the working power of the water pump and the instant heating body is subjected to gear jump adjustment.
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