CN115448391A - Heat purification all-in-one machine and heating control method thereof - Google Patents

Heat purification all-in-one machine and heating control method thereof Download PDF

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Publication number
CN115448391A
CN115448391A CN202211066430.4A CN202211066430A CN115448391A CN 115448391 A CN115448391 A CN 115448391A CN 202211066430 A CN202211066430 A CN 202211066430A CN 115448391 A CN115448391 A CN 115448391A
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booster pump
heating body
flow
heating
back pressure
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CN202211066430.4A
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CN115448391B (en
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陈建华
邓愿
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Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/005—Valves
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/40—Liquid flow rate

Abstract

The invention relates to a heat-purifying integrated machine, comprising: the water purification module comprises a first pipeline and a filter element assembly arranged on the first pipeline, wherein the filter element assembly comprises an input end and an output end, and the input end of the filter element assembly is provided with a booster pump; the heating module comprises a second pipeline and a heating body arranged in the second pipeline, the second pipeline is provided with a water inlet and a water outlet, the water inlet is communicated with the output end of the filter element assembly, and the heating body is positioned between the water inlet and the water outlet; the method is characterized in that: further comprising: and the throttle valve is arranged on the second pipeline and is positioned between the water inlet of the second pipeline and the heating body. The heating control method of the heat purifying and heating integrated machine is also disclosed. Has the advantages that: the throttle valve is used behind the filter element assembly to replace part of the waterway component, so that the problem of secondary pollution caused by the existence of a water purifying tank is avoided; meanwhile, the volume part of the water purifying tank is removed, so that the volume of the purification system can be greatly increased, and the flow can be greatly improved.

Description

Heat purification all-in-one machine and heating control method thereof
Technical Field
The invention relates to the technical field of water purification equipment, in particular to a heat purification all-in-one machine and a heating control method thereof.
Background
The net hot all-in-one is a collection water purification and heating function in novel water purifier of an organic whole, and present net hot all-in-one, main working process is: the water of former water tank passes through the booster pump pressure boost, and pressure boost back water is sent to the filter core and is filtered, and the water storage after filtering is in the water purification case, when the user needs to use, takes the water purification out from the water purification case through the suction pump, then gets into the heating member, flows out again after heating through the heating member. This net hot all-in-one adopts the mode of instant heating to heat the water purification that flows through this heating member, and in practical application, this kind of net hot all-in-one's water purification flow is less, can't satisfy user's demand.
To solve the above technical problem, for example, the chinese utility model with patent number ZL202121434001.9 (publication number CN 215161123U) discloses a desktop water purifier, which comprises: the water purifying device comprises a water purifying main body, wherein a filter element assembly is arranged in the water purifying main body; the heating device is connected to the water purifying main body; and the water storage device is detachably arranged on the heating device, the heating device is used for heating the water storage device, and the water outlet of the filter element component is communicated with the water storage device when the water storage device is arranged on the heating device. Because the water storage device exists in the water purifier, the flow of the filtering system of the front waterway can be properly reduced, and the cost and the volume of the filtering system are saved. Meanwhile, due to the existence of the water storage device, a relatively large space is inevitably occupied; in addition, the volume of the water purification system is necessarily compressed, otherwise, the effects of large flow and small volume cannot be achieved. Further improvements to existing clean and hot all-in-one machines are needed.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a heat and water purifying integrated machine which can reduce the volume and increase the water flow rate.
The second technical problem to be solved by the present invention is to provide a control method for the heat-purifying all-in-one machine in view of the above prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a thermal all-in-one machine comprising:
the water purification module comprises a first pipeline and a filter element assembly arranged on the first pipeline, wherein the filter element assembly comprises an input end and an output end, and the input end of the filter element assembly is provided with a booster pump;
the heating module comprises a second pipeline and a heating body arranged in the second pipeline, the second pipeline is provided with a water inlet and a water outlet, the water inlet is communicated with the output end of the filter element assembly, and the heating body is positioned between the water inlet and the water outlet;
the method is characterized in that: further comprising:
and the throttle valve is arranged on the second pipeline and is positioned between the water inlet of the second pipeline and the heating body.
Preferably, the throttle valve is a back pressure valve.
In order to realize the detection of the water inlet temperature and the water outlet temperature of the heating body, the water inlet temperature detection device further comprises a first temperature detection module for detecting the water inlet temperature of the heating body and a second temperature detection module for detecting the water outlet temperature of the heating body.
The device also comprises a flowmeter for detecting the water inflow of the heating body.
In order to realize the water outlet temperature and flow control of the heat and water purifying integrated machine, the first preferred mode in the invention is as follows: the valve opening of the back pressure valve is fixed, and the power supply voltage of the booster pump is adjustable.
In order to realize the outlet water temperature and flow control of the heat and water purifying integrated machine, the second preferred mode in the invention is as follows: the valve opening of the back pressure valve is adjustable, and the power supply voltage of the booster pump is fixed.
In order to realize the outlet water temperature and flow control of the heat and water purifying integrated machine, the preferable third mode in the invention is as follows: the valve opening of the back pressure valve is adjustable, and the power supply voltage of the booster pump is adjustable.
The technical scheme adopted by the invention for solving the second technical problem is as follows: a heating control method of the heat purifying and heating integrated machine is characterized by comprising the following steps:
step 1, acquiring the water inlet temperature of the heating body and the power of the heating body, and calculating to obtain the initial heating flow F of the heating body according to the water inlet temperature of the heating body, the preset water outlet temperature of the heating body and the power of the heating body 0 ；
Step 2, setting the estimated trapped flow F of the back pressure valve Preparing According to the trapped flow F Preparation of Calculating to obtain the maximum valve opening value of the back pressure valve;
step 3, according to the initial heating flow F of the heating body 0 Flow F expected to be trapped by the back-pressure valve Preparing Calculating to obtain the quantitative flow F of the booster pump 1 And acquiring the quantitative flow F of the booster pump according to the relation between the flow of the booster pump and the power supply voltage of the booster pump 1 The corresponding booster pump power supply voltage;
step 4, opening the valve opening of the back pressure valve to the maximum value in the step 2, then supplying power to the booster pump by using the voltage of the booster pump in the step 3, and detecting the data of the flow meter in real time after the booster pump supplies power;
step 5, judging whether the flowmeter has data, if so, starting a heating body, and turning to step 6; if not, continuing to detect the flowmeter and continuing to the step 5;
step 6, adjusting the power of the heating body through a PID algorithm;
step 7, detecting the water outlet temperature of the heating body in real time, judging whether the water outlet temperature of the heating body reaches the preset water outlet temperature of the heating body in the step 1 or not after the water outlet temperature of the heating body is stable, and if so, turning to the step 8; if not, the step 10 is carried out;
step 8, adjusting the current valve opening of the back pressure valve to be larger, and then adjusting the power supply voltage of the booster pump through a PID algorithm;
step 9, judging whether the current valve opening of the back pressure valve reaches the maximum value, if so, recording numerical values corresponding to the current power of the heating body, the valve opening of the back pressure valve and the power supply voltage of the booster pump as reference parameters of the heat and power purification integrated machine at the next time; if not, go to step 6;
and step 10, adjusting the valve opening of the backpressure valve through a PID algorithm, and turning to step 6.
In order to solve the problem that enough flow allowance is left after the booster pump passes through the filter element assembly, the booster pump quantitative flow F in the step 3 1 The calculation formula of (c) is:
F 1 ＝(F preparing +F 0 )*N；
Wherein N is a preset coefficient, and N is more than 1.
In order to obtain the relationship between the flow rate of the booster pump and the power supply voltage of the booster pump, in the step 3, the valve opening of the back pressure valve is opened to the maximum in advance, and the flow rate of the booster pump under different values is obtained by recording the power supply voltage of the booster pump, so that the relationship between the flow rate of the booster pump and the power supply voltage of the booster pump is obtained.
Compared with the prior art, the invention has the advantages that: a throttle valve is used behind the filter element assembly to replace part of the waterway component, so that the problem of secondary pollution caused by the existence of a water purifying tank is avoided; meanwhile, the volume part of the water purifying tank is removed, so that the volume of the purification system can be greatly increased, and the flow can be greatly improved; and because the purified water tank is removed and directly passes through the purification system to directly heat or discharge water, the cost is saved without the limitation of the water tank.
Drawings
FIG. 1 is a schematic diagram of a thermal cleaning and cleaning integrated machine according to an embodiment of the invention;
fig. 2 is a heating control flow diagram of the heat and air purifying integrated machine in the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the all-in-one heat purifier in this embodiment includes a water purifying module 1 and a heating module 2. The water purification module 1 comprises a first pipeline 11 and a filter element assembly 12 arranged on the first pipeline 11, wherein the filter element assembly 12 is a composite filter element which is common in the prior art, and the description is omitted; the filter element assembly 12 comprises an input end and an output end, and the input end of the filter element assembly 12 is provided with a booster pump 13; the heating module 2 comprises a second pipeline 21 and a heating body 22 arranged in the second pipeline 21, the second pipeline 21 is provided with a water inlet and a water outlet, the water inlet is communicated with the output end of the filter element assembly 12, and the heating body 22 is positioned between the water inlet and the water outlet; furthermore, a throttle 23 is mounted on the second line 21, the throttle 23 being located between the inlet of the second line 21 and the heating body 22. In this embodiment, the throttle valve 23 is a back pressure valve.
Certainly, the water purification module 1 also comprises a water storage tank 14, a flushing electromagnetic valve 15 and a first one-way valve 16; in order to realize the heating control of the heat purifying and heating integrated machine, the heat purifying and heating integrated machine further comprises a first temperature detection module 24 for detecting the water inlet temperature of the heating body, a second temperature detection module 25 for detecting the water outlet temperature of the heating body and a flowmeter 26 for detecting the water inlet flow of the heating body. In this embodiment, the first temperature detection module 24 and the second temperature detection module 25 are conventional temperature sensors. Of course, the second pipe 21 is also fitted with a moisture separation module 26 and a second check valve 27 adjacent the water outlet.
The whole waterway workflow process of the heat and water purifying all-in-one machine comprises the following steps: (1) opening a flushing electromagnetic valve 15, closing a back pressure valve, opening a booster pump 13, and flushing the filter element assembly 12, wherein the flushing electromagnetic valve is mainly used in a plurality of scenes such as initial electrification, after water outlet use, regular use and the like; (2) opening a back pressure valve, closing a flushing electromagnetic valve 15, opening a booster pump 13 and directly discharging cold water; (3) the flushing electromagnetic valve 15 is closed, the valve opening degree of the backpressure valve is adjusted, the voltage of the booster pump 13 is adjusted, the heating body 22 is opened, the temperature and the flow are respectively fed back through the first temperature detection module 24, the second temperature detection module 25 and the flow meter 26, and hot water is discharged through a control algorithm.
The heating flow of the heat purification and integration machine comprises the following schemes:
according to the scheme I, the opening degree of a valve of a back pressure valve is fixed, and the power supply voltage of a booster pump is adjustable;
according to the scheme II, the valve opening of the back pressure valve is adjustable, and the power supply voltage of the booster pump is fixed;
and in the third scheme, the valve opening of the back pressure valve is adjustable, and the power supply voltage of the booster pump is adjustable.
In the first scheme and the second scheme, only the power supply voltage of the single booster pump and the valve opening of the back pressure valve are used for further adjusting the water outlet flow, and in the third scheme, the water outlet flow is finally adjusted according to the fact that the valve opening of the back pressure valve and the power supply voltage of the booster pump are adjustable, so that the effect of the third scheme is better than that of the first scheme and the second scheme.
As shown in fig. 2, the heating control method of the heat and air purifying integrated machine according to the third embodiment includes the following steps:
step 1, acquiring the water inlet temperature of the heating body and the power of the heating body, and calculating to obtain the initial heating flow F of the heating body according to the water inlet temperature of the heating body, the preset water outlet temperature of the heating body and the power of the heating body 0 ；
The method comprises the following specific steps:
the method comprises the following steps that the temperature difference delta T = Tset-NTC1 before and after a heating body, the Tset is preset water outlet temperature, the NTC1 is water inlet temperature, the power of the heating body is Pmax, and the initial heating flow is calculated through a specific heat capacity formula of water:
pmax T = C M Δ T (formula 1);
c is the specific heat capacity of water and is generally set to be 4.2X10^3; m is the mass of water, and can also be the flow F multiplied by the time t;
step 2, setting the estimated trapped flow F of the back pressure valve Preparation of According to the trapped flow F Preparing Calculating to obtain the maximum valve opening value of the back pressure valve;
step 3, according to the initial heating flow F of the heating body 0 Flow F expected to be trapped by the back-pressure valve Preparing Calculating to obtain the quantitative flow F of the booster pump 1 And according to the relationship between the flow rate of booster pump and booster pump power supply voltage obtaining booster pump quantitative flow rate F 1 The corresponding booster pump power supply voltage;
step 3, booster pump quantitative flow F 1 The calculation formula of (c) is:
F 1 ＝(F preparing +F 0 )*N；
Wherein N is a preset coefficient, and N is more than 1; n =1.5 in this example;
opening the valve of the back pressure valve to the maximum in advance, and recording the booster pump flow under different values of the booster pump power supply voltage to obtain the relation between the booster pump flow and the booster pump power supply voltage;
step 4, opening the valve opening of the back pressure valve to the maximum value in the step 2, then supplying power to the booster pump by using the voltage of the booster pump in the step 3, and detecting the data of the flow meter in real time after the booster pump supplies power;
step 5, judging whether the flowmeter has data, if so, starting a heating body, and turning to step 6; if not, continuing to detect the flowmeter and continuing to the step 5;
step 6, adjusting the power of the heating body through a PID algorithm;
the PID algorithm, i.e., the probability Integral Differential algorithm, also called proportional-Integral-derivative control algorithm, belongs to a mature prior art in the control field, and is not described herein in detail; the corresponding heating body power can be obtained according to the outlet water temperature through a PID algorithm;
step 7, detecting the water outlet temperature of the heating body in real time, judging whether the water outlet temperature of the heating body reaches the preset water outlet temperature of the heating body in the step 1 or not after the water outlet temperature of the heating body is stable, and if so, turning to the step 8; if not, the step 10 is carried out;
step 8, adjusting the current valve opening of the back pressure valve to be larger, and then adjusting the power supply voltage of the booster pump through a PID algorithm;
in the step, the current valve opening of the back pressure valve is increased according to a certain proportion each time, for example: the scale-up ratio can be 1%;
step 9, judging whether the current valve opening of the back pressure valve reaches the maximum value, if so, recording numerical values corresponding to the current power of the heating body, the valve opening of the back pressure valve and the power supply voltage of the booster pump as reference parameters of the heat and power purification integrated machine at the next time; if not, go to step 6;
and step 10, adjusting the valve opening of the backpressure valve through a PID algorithm, and turning to step 6.
In this embodiment, the flow calibration of the booster pump at the maximum opening of the back pressure valve, that is, the flow values of the filtered water obtained at different power supply voltages, is performed in advance, and an approximate relationship between the increase and decrease of the power supply voltage and the increase and decrease of the flow of the booster pump within a certain range can be obtained.
In order to facilitate understanding of the heating control method in the present application, in this embodiment, the heating flow rate of the heating body may be roughly calculated according to the highest temperature of the outlet water; such as: according to the outlet water temperature of 100 ℃, the maximum power of 2200W and the inlet water temperature of 25 ℃, the heating flow of the heating body is calculated by using the formula 1, and the calculation formula is as follows:
2200w × 60s =4200 × f (heating flux) — (100 ℃ -25 ℃); the heating flow F =0.419L/min is obtained by calculation, the flow is approximate to 400ml/min at the moment, the power supply voltage of the booster pump is set by taking the flow (400 + 200) =1.5 = 900ml/min) of the back pressure valve as a standard for quantitative filtering output flow, the valve opening of the back pressure valve is adjusted at the moment, the valve opening of the back pressure valve is made according to data of the flowmeter, and the change data of the heating flow under different valve openings of the back pressure valve, namely the relationship between the valve opening of the back pressure valve and the increase and decrease of the heating flow, is obtained. When the outlet water temperature is highest, the flow is minimum, and the accuracy requirement on the flow is also highest.
When heating control is executed, firstly, the flow rate of a booster pump is (400 + 200) = 1.5=900ml/min as the quantitative filtering output flow rate as a standard, the power supply voltage of the booster pump is set, the requirement of initial flow rate during heating is met, and the maximum value of a back pressure valve is opened at the moment; after the booster pump is started, the flow is output, the valve opening of the back pressure valve is the maximum value, and at the moment, the flow meter can detect a signal to indicate that the flow is started and simultaneously starts to detect the flow; the heating body starts after the flowmeter detects the signal, and water starts to be heated after the heating body starts; the power of the heating body is adjusted through PID, after the temperature is stable, whether the flow is reduced is determined through whether the temperature reaches the standard, and under the condition that the temperature does not reach the standard, the power adjusted through PID is judged to be the full power, and at the moment, the flow is too large and needs to be adjusted to be small; when the temperature reaches a set value, the flow rate is small enough, at this time, the power is completely used up, if the power is not used much (for example, the idle power is more than 5%, the power is used for heating PID adjustment), the flow rate is inevitably small, and at this time, the flow rate needs to be increased.
The valve opening of the back pressure valve is preferentially adjusted when the flow is adjusted, and the speed is high; and adjusting the valve opening of the back pressure valve according to the relationship between the valve opening of the back pressure valve and the flow calibrated before so as to meet the flow. The incremental formula is Δ U1 (t) = Kp1 × (e (t) -e (t-1)) + Ki1 × e (t) + Kd1 × (e (t) -2 × e (t-1) + e (t-2)). U1 (t) is flow rate needing to be adjusted, e (t) is current temperature deviation, e (t-1) is last temperature deviation, e (t-2) is last temperature deviation, kp1, ki1 and Kd1 are coefficients of PID respectively, temperature and flow rate are mainly correlated, and numerical values of the Kp, ki and Kd coefficients can be confirmed according to experience and actual adjusting effect. And calculating delta U (t) as a flow change value, and adjusting the valve opening of the back pressure valve according to the relation between the valve opening and the flow through the data calibrated by the back pressure valve.
The composite requirement of power and flow is met, namely, the temperature is stable and the flow is also stable under the maximum power, and the maximum flow is also under the composite requirement. Whether the booster pump has redundant filtering flow or not is considered, and the optimal state is that the filtering flow of the booster pump is minimum and the valve opening of the backpressure valve is maximum in terms of flow; because the output filtering flow rate at the front of the booster pump is larger, and the back pressure valve is throttled, the originally excessive flow rate of the booster pump is completely discharged by waste water.
The incremental formula of the power supply voltage of the booster pump is as follows:
△U2(t)＝Kp2*(e(t)-e(t-1))+Ki2*e(t)+Kd2*(e(t)–2*e(t-1)+e(t-2))；
wherein, U2 (t) is the flow rate required to be adjusted, e (t) is the current flow rate deviation, namely the calibration flow rate of the booster pump under the current power supply voltage and the actual flow rate of the flowmeter, and the reason for the deviation is the throttling of the back pressure valve; e (t-1) is the last flow deviation, e (t-2) is the last flow deviation, and Kp2, ki2, and Kd2 are the coefficients of PID, respectively. After calculating U2 (t), the flow rate is adjusted by adjusting the voltage of the booster pump.
Under the condition of ensuring that the outlet water temperature reaches the standard and reaches full power, the power and the heating flow of the heating body need to be adjusted, so the valve opening of the back pressure valve is adjusted firstly. After the water outlet temperature, power and heating flow of the heating body meet, secondary adjustment is carried out again, the filtering flow of the booster pump is adjusted, and after the booster pump is adjusted, the output flow of the backpressure valve has influence, so the valve opening of the backpressure valve is adjusted again, the adjustment is carried out in turn, finally, the minimum voltage of the booster pump is the filtering flow, and simultaneously, the valve opening of the backpressure valve is the maximum, the 2 devices ensure the flow optimization, meanwhile, the heating flow, the full power and the water outlet temperature are also optimized, at the moment, the optimal state of a purification and heating system is obtained, at the moment, data is recorded and serves as default setting parameters under the same condition at the next time, so the current state can be quickly reached during the next heating, the optimization of continuous iteration can be carried out, the inconsistency of batch parameters is avoided, and quick adjustment can be carried out when the environment changes.

Claims (10)

1. A net heat all-in-one machine comprising:
the water purification module comprises a first pipeline and a filter element assembly arranged on the first pipeline, wherein the filter element assembly comprises an input end and an output end, and the input end of the filter element assembly is provided with a booster pump;
the heating module comprises a second pipeline and a heating body arranged in the second pipeline, the second pipeline is provided with a water inlet and a water outlet, the water inlet is communicated with the output end of the filter element assembly, and the heating body is positioned between the water inlet and the water outlet;
the method is characterized in that: further comprising:
and the throttle valve is arranged on the second pipeline and is positioned between the water inlet of the second pipeline and the heating body.
2. The net heat all-in-one machine of claim 1, wherein: the throttle valve is a backpressure valve.
3. The net heat all-in-one machine of claim 2, wherein: the water heater further comprises a first temperature detection module for detecting the water inlet temperature of the heating body and a second temperature detection module for detecting the water outlet temperature of the heating body.
4. A net heat all-in-one machine according to claim 3, wherein: the device also comprises a flowmeter for detecting the water inflow of the heating body.
5. A machine according to any one of claims 2 to 4, wherein: the valve opening of the back pressure valve is fixed, and the power supply voltage of the booster pump is adjustable.
6. A machine according to any one of claims 2 to 4, wherein: the valve opening of the back pressure valve is adjustable, and the power supply voltage of the booster pump is fixed.
7. A machine according to any one of claims 2 to 4, wherein: the valve opening of the back pressure valve is adjustable, and the power supply voltage of the booster pump is adjustable.
8. A heating control method of the all-in-one machine as claimed in claim 7, characterized by comprising the following steps:
step 1, acquiring the water inlet temperature of the heating body and the power of the heating body, and calculating to obtain the initial heating flow F of the heating body according to the water inlet temperature of the heating body, the preset water outlet temperature of the heating body and the power of the heating body 0 ；
Step 2, setting the estimated trapped flow F of the back pressure valve Preparing According to the trapped flow F Preparation of Calculating to obtain the maximum valve opening value of the back pressure valve;
step 3, according to the initial heating flow F of the heating body 0 Flow F expected to be trapped by the back pressure valve Preparation of Calculating to obtain the quantitative flow F of the booster pump 1 And according to the relationship between the flow rate of booster pump and booster pump power supply voltage obtaining booster pump quantitative flow rate F 1 The corresponding booster pump power supply voltage;
step 4, opening the valve opening of the back pressure valve to the maximum value in the step 2, then supplying power to the booster pump by using the voltage of the booster pump in the step 3, and detecting the data of the flow meter in real time after the booster pump supplies power;
step 5, judging whether the flowmeter has data, if so, starting a heating body, and turning to step 6; if not, continuing to detect the flowmeter and continuing to the step 5;
step 6, adjusting the power of the heating body through a PID algorithm;
step 7, detecting the water outlet temperature of the heating body in real time, judging whether the water outlet temperature of the heating body reaches the preset water outlet temperature of the heating body in the step 1 or not after the water outlet temperature of the heating body is stable, and if so, turning to the step 8; if not, the step 10 is carried out;
step 8, adjusting the current valve opening of the back pressure valve to be larger, and then adjusting the power supply voltage of the booster pump through a PID algorithm;
step 9, judging whether the current valve opening of the back pressure valve reaches the maximum value, if so, recording numerical values corresponding to the current power of the heating body, the valve opening of the back pressure valve and the power supply voltage of the booster pump as reference parameters of the heat and power purification integrated machine at the next time; if not, go to step 6;
and step 10, adjusting the valve opening of the backpressure valve through a PID algorithm, and turning to step 6.
9. The heating control method according to claim 8, characterized in that: step 3, the quantitative flow F of the booster pump 1 The calculation formula of (c) is:
F 1 ＝(F preparation of +F 0 )*N；
Wherein N is a preset coefficient, and N is more than 1.
10. The heating control method according to claim 9, characterized in that: in the step 3, the valve opening of the back pressure valve is opened to the maximum in advance, and the booster pump flow under different values is obtained by recording the booster pump power supply voltage, so that the relation between the booster pump flow and the booster pump power supply voltage is obtained.
CN202211066430.4A 2022-08-31 2022-08-31 Heat-purifying all-in-one machine and heating control method thereof Active CN115448391B (en)

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CN202211066430.4A CN115448391B (en) 2022-08-31 2022-08-31 Heat-purifying all-in-one machine and heating control method thereof

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Application Number Priority Date Filing Date Title
CN202211066430.4A CN115448391B (en) 2022-08-31 2022-08-31 Heat-purifying all-in-one machine and heating control method thereof

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Publication Number Publication Date
CN115448391A true CN115448391A (en) 2022-12-09
CN115448391B CN115448391B (en) 2023-10-20

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