CN105241069A - Time sequence control method for quickly starting short front cleaning forced-ventilation water heater - Google Patents
Time sequence control method for quickly starting short front cleaning forced-ventilation water heater Download PDFInfo
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- CN105241069A CN105241069A CN201510656804.1A CN201510656804A CN105241069A CN 105241069 A CN105241069 A CN 105241069A CN 201510656804 A CN201510656804 A CN 201510656804A CN 105241069 A CN105241069 A CN 105241069A
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Abstract
The invention discloses a time sequence control method for quickly starting a short front cleaning forced-ventilation water heater. The time sequence control method comprises the following steps: (A) electrifying and initializing; (B) entering a standby state; (C) detecting water flow signals, entering the next step if the water flow signals are detected, or continuing to detect; (D) setting the time sequence, defining interval time from the last shutdown of the water heater to the startup of this time as T, and defining T0 as a threshold of the interval time T; and (E) detecting the time sequence, operating a normal start mode including a front cleaning process by the water heater if T is greater than or equal to T0 or the water heater is electrified and primarily started, or operating the short-time front cleaning process and directly entering a rapid start mode, thereby quickly starting under the condition that the water heater is shut down in the midway. Through the time sequence control method for quickly starting the short front cleaning forced-ventilation water heater, the start time of the water heater is reduced; the sudden rise and the sudden fall of the water temperature are avoided; the comfort in use of users is improved.
Description
Technical field
The present invention relates to electric heater, the sequential control method that especially a kind of short front cleaning forced-ventilated water heater starts fast.
Background technology
Forced-ventilated water heater is developed into from Water heater for flue, while solution product gas heater use safety problem, also defect had some by band: in water heater use procedure, if midway close water, again heat water valve time, water heater needs the long period could ignition operation, thus occurs, because water cut-off temperature-rising reason, leaving water temperature short time raise fast, then dropping sharply to close to cold water temperature, leaving water temperature slowly rises again, this section of middle cold water, user can be made to feel very uncomfortable.This situation is not obvious to customer impact in summer, but when winter, cold water temperature was very low, likely causes user to catch a cold, even cause other diseases, in order to avoid this situation occurs, major part user generally selects to be not related to water, and waste water, electricity, gas, also cause inconvenience to the user simultaneously.
Water heater for flue combustion system adopts open architecture, even if water heater has a small amount of gas leakage, also can not rest on water heater housing inside, when water heater starts, pulser discharges, immediately after of short duration time delay, magnetic valve is opened, and completes rapidly Water heater igniting process.Pass, midway water opens water valve again, only there will be water cut-off temperature-rising, and leaving water temperature can raise rapidly afterwards, there will not be too low temperature cold water.
For forced-ventilated water heater, situation just differs widely.Forced-ventilated water heater combustion system adopts semi-open structure, and water heater has a small amount of gas leakage, just may rest on water heater housing inside, once run into spark, will detonation immediately, and cause serious consequence.In order to avoid this situation occurs, when water heater starts, as shown in Figure 1, first by blower fan fast turn-around 2 to 3 seconds, carry out front cleaning, water heater internal gas to be discharged, and then after determining that blast switch is normal, pulser just starts electric discharge, after of short duration time delay, magnetic valve is opened, and completes Water heater igniting process.According to this program, pass, midway water opens water valve again, first occurs water cut-off temperature-rising, and then after several seconds cold water, leaving water temperature starts to rise again.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide the sequential control method that a kind of short front cleaning forced-ventilated water heater starts fast.
The technical solution used in the present invention is:
The sequential control method that before short, cleaning forced-ventilated water heater starts fast, comprises the following steps (A) power-up initializing; (B) holding state is entered; (C) detect water-flow signal, if water-flow signal detected, enter next step, otherwise continue to detect; (D) timing settings: to define front water heater shutdown to interval time of this start be T, T0 is the threshold value of this interval time of T; (E) time-series rules: if T >=T0, or water heater powers on first unlatching, the normal startup mode of cleaning flow process before water heater carries out comprising, otherwise carry out the front cleaning flow process of short time and directly enter fast attack mode.
Further, in described step e, normal startup mode comprises (E1) front cleaning: the blower fan high-speed rotation T1 time, discharges water heater internal gas; (E2) detect blast switch whether to close, if be closed into next step, otherwise stop blower fan after the T2 time; (E3) control impuls igniter electric discharge, time delay T3, Controlling solenoid valve and proportioning valve are opened, and control blower fan low cruise or stop power supply; (E4) detect in burner whether have flame, if there is flame, enter next step, otherwise when exceeding fire defector time T4, shut electromagnetic valve and proportioning valve, stop pulse igniter discharge; (E5) stop pulse igniter electric discharge; (E6), water heater normal regulating export hot water; (E7) detect water-flow signal whether to close, then enter next step if close, otherwise return step e 5; (E8) clean afterwards, shut electromagnetic valve and proportioning valve, blower fan runs up after the T5 time and has stopped rear cleaning; (E9) holding state is returned; Described fast attack mode comprises: carry out short front cleaning with the time being less than T1, then directly enter E2 ~ E9 step of normal startup mode.
Further; water heater working state-detection link is provided with between described step e 6 and E7; this link comprise detect inductive needle have one-way conduction and with surrounding metal without short circuit, temperature protection switch is in closure state, whether blast switch closes; if water heater working state-detection link is normally, enter step e 7, otherwise shut electromagnetic valve and proportioning valve.
Further, in described step e 4 and water heater working state-detection link after shut electromagnetic valve and proportioning valve, after detecting that water flow switch is closed, through after clean after return holding state.
Especially; self-inspection link is provided with between described step D and step e; this self-inspection link comprise detect inductive needle and surrounding metal without short circuit, magnetic valve and proportioning valve without open circuit, temperature protection switch is in closure state, temp probe resistance is in normal condition, blast switch is in off-state; if self-inspection link is normally, enter step e, otherwise detect water flow switch close after, through after clean after return holding state.
In addition, in described step e 4, self-inspection link and water heater working state-detection link, if water-flow signal is closed, enter rear cleaning, namely blower fan runs up after the T5 time and stops, otherwise continues to detect water-flow signal and close; Holding state is entered after cleaning after completing.
Beneficial effect of the present invention:
Initiating switchup after water heater shuts down by sequential control method of the present invention for a long time, close water with midway to open water valve promoter region again and separate, during initiating switchup, start by normal, cleaning program before the band long period, and water is closed when opening water valve again in midway, adopt rapid-ignition start-up mode, after fan starting, through short time time delay, after all switches of confirmation are normal, pulser starts electric discharge immediately, after of short duration time delay, magnetic valve and gas ratio valve are opened, complete Water heater igniting process, thus start fast under realizing midway power down condition, reduce water heater start-up time, water temperature is avoided to rise sharply rapid drawdown, promote user's comfort.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
Fig. 1 is the control method flow chart that existing forced-ventilated water heater starts;
Fig. 2 is the control method flow chart that forced-ventilated water heater of the present invention starts fast.
Detailed description of the invention
Central scope of the present invention is: when pass, midway water opens water valve again, because interval time is extremely short, even if there is a small amount of gas leakage, detonation can not be caused when also not reaching fuel gas buring concentration, igniting, thus the front cleaning of short time is only needed, therefore again start, before can shortening, the time of cleaning link is to solve technical problem of the present invention.
As shown in Figure 2, be the sequential control method that a kind of short front cleaning forced-ventilated water heater of the present invention starts fast, comprise the following steps:
(A) power-up initializing;
(B) holding state is entered;
(C) detect water-flow signal, if water-flow signal detected, enter next step, otherwise continue to detect;
(D) timing settings: to define front water heater shutdown to interval time of this start be T, T0 is the threshold value of this interval time of T;
Self-inspection link; this self-inspection link comprise detect inductive needle and surrounding metal without short circuit, magnetic valve and proportioning valve without open circuit, temperature protection switch is in closure state, temp probe resistance is in normal condition, blast switch is in off-state; if self-inspection link is normally, enter step e, otherwise detect water flow switch close after, through after clean after return holding state.
(E) time-series rules: if T >=T0, this state is defined as binary digit 1, or water heater powers on first unlatching, the normal startup mode of cleaning flow process before water heater carries out comprising; If T < is T0, this state is defined as binary numeral 0, carries out the front cleaning flow process of short time and directly enter fast attack mode under this state.The present embodiment T0 is 5 minutes, and especially, when system reboot after power-off, controller is automatically made normal startup mode.
Concrete, normal startup mode comprises:
(E1) front cleaning: blower fan high-speed rotation T1 time (3S), discharges water heater internal gas;
(E2) detect blast switch whether close, if be closed into next step, otherwise the T2 time (5S) stop blower fan afterwards;
(E3) control impuls igniter electric discharge, time delay T3(0.2S), Controlling solenoid valve and proportioning valve are opened, and control blower fan low cruise or stop power supply;
(E4) detect in burner whether have flame, if there is flame, enter next step, otherwise when exceeding fire defector time T4, shut electromagnetic valve and proportioning valve, stop pulse igniter discharge, detect that water flow switch is closed afterwards, through after clean after return holding state;
(E5) stop pulse igniter electric discharge;
(E6) water heater normal regulating export hot water;
Water heater working state-detection link; this link comprise detect inductive needle have one-way conduction and with surrounding metal without short circuit, temperature protection switch is in closure state, whether blast switch closes; if water heater working state-detection link is normally, enter step e 7, otherwise shut electromagnetic valve and proportioning valve.
(E7) detect water-flow signal whether to close, then enter next step if close, otherwise return step e 5;
(E8) clean afterwards, shut electromagnetic valve and proportioning valve, blower fan T5 time (20S) that runs up has stopped rear cleaning afterwards;
(E9) holding state is returned;
And fast attack mode comprises: carry out short front cleaning with the time being less than T1, then directly enter E2 ~ E9 step of above-mentioned normal startup mode.
In addition, in described step e 4 and water heater working state-detection link after shut electromagnetic valve and proportioning valve, the detection whether ingoing stream signal closes.In step e 4, self-inspection link and water heater working state-detection link, if water-flow signal is closed, enter rear cleaning, namely blower fan runs up T5(20S) stop after the time, otherwise continue to detect water-flow signal and close; Holding state is entered after cleaning after completing.
As mentioned above, initiating switchup after water heater shuts down by sequential control method of the present invention for a long time, closes water with midway and opens water valve again and start, can pass through pulser internal timer signal distinguishing.After water heater shutdown, after timer starts to record water heater shutdown, to the time next time between startup, this time, when being less than setting-up time, default was fast attack mode, during more than setting-up time, default is normal startup mode, thus determine whether to save the front cleaning time, to avoid the technical problem of conventional water heaters " pass, midway water opens water valve again, first occurs water cut-off temperature-rising; then after several seconds cold water, and leaving water temperature starts to rise again ".
The foregoing is only preferred embodiments of the present invention, the present invention is not limited to above-mentioned embodiment, as long as the technical scheme realizing the object of the invention with basic same approach all belongs within protection scope of the present invention.
Claims (6)
1. the short front sequential control method cleaning forced-ventilated water heater and start fast, is characterized in that: comprise the following steps (A) power-up initializing; (B) holding state is entered; (C) detect water-flow signal, if water-flow signal detected, enter next step, otherwise continue to detect; (D) timing settings: to define front water heater shutdown to interval time of this start be T, T0 is the threshold value of this interval time of T; (E) time-series rules: if T >=T0, or water heater powers on first unlatching, the normal startup mode of cleaning flow process before water heater carries out comprising, otherwise carry out the front cleaning flow process of short time and directly enter fast attack mode.
2. according to claim 1 a kind of short before the sequential control method that starts fast of cleaning forced-ventilated water heater, it is characterized in that: in described step e, normal startup mode comprises (E1) front cleaning: the blower fan high-speed rotation T1 time, discharge water heater internal gas; (E2) detect blast switch whether to close, if be closed into next step, otherwise stop blower fan after the T2 time; (E3) control impuls igniter electric discharge, time delay T3, Controlling solenoid valve and proportioning valve are opened, and control blower fan low cruise or stop power supply; (E4) detect in burner whether have flame, if there is flame, enter next step, otherwise when exceeding fire defector time T4, shut electromagnetic valve and proportioning valve, stop pulse igniter discharge; (E5) stop pulse igniter electric discharge; (E6), water heater normal regulating export hot water; (E7) detect water-flow signal whether to close, then enter next step if close, otherwise return step e 5; (E8) clean afterwards, shut electromagnetic valve and proportioning valve, blower fan runs up after the T5 time and has stopped rear cleaning; (E9) holding state is returned; Described fast attack mode comprises: carry out short front cleaning with the time being less than T1, then directly enter E2 ~ E9 step of normal startup mode.
3. according to claim 2 a kind of short before the sequential control method that starts fast of cleaning forced-ventilated water heater; it is characterized in that: between described step e 6 and E7, be provided with water heater working state-detection link; this link comprise detect inductive needle have one-way conduction and with surrounding metal without short circuit, temperature protection switch is in closure state, whether blast switch closes; if water heater working state-detection link is normally, enter step e 7, otherwise shut electromagnetic valve and proportioning valve.
4. according to claim 3 a kind of short before the sequential control method that starts fast of cleaning forced-ventilated water heater, it is characterized in that: in described step e 4 and water heater working state-detection link after shut electromagnetic valve and proportioning valve, detect water flow switch close after, through after clean after return holding state.
5. according to claim 1 a kind of short before the sequential control method that starts fast of cleaning forced-ventilated water heater; it is characterized in that: between described step D and step e, be provided with self-inspection link; this self-inspection link comprise detect inductive needle and surrounding metal without short circuit, magnetic valve and proportioning valve without open circuit, temperature protection switch is in closure state, temp probe resistance is in normal condition, blast switch is in off-state; if self-inspection link is normally, enter step e, otherwise detect water flow switch close after, through after clean after return holding state.
6. the sequential control method that a kind of short front cleaning forced-ventilated water heater starts fast according to claim 4 or 5, it is characterized in that: in described step e 4, self-inspection link and water heater working state-detection link, if water-flow signal is closed, enter rear cleaning, namely blower fan runs up after the T5 time and stops, otherwise continues to detect water-flow signal and close; Holding state is entered after cleaning after completing.
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| CN201510656804.1A CN105241069B (en) | 2015-10-13 | 2015-10-13 | A kind of short preceding sequential control method for cleaning forced-ventilated water heater and quickly starting |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105674576A (en) * | 2016-03-10 | 2016-06-15 | 广东超人节能厨卫电器有限公司 | Control method for realizing quick starting of water heater through gas concentration detection |
| CN105910290A (en) * | 2016-05-10 | 2016-08-31 | 广东超人节能厨卫电器有限公司 | Control method for achieving fast start of direct-current water heater through fuel gas concentration detection |
| CN106016755A (en) * | 2016-05-10 | 2016-10-12 | 广东超人节能厨卫电器有限公司 | Time sequence control method for quick starting of direct-current strong suction gas water heater |
| CN106895587A (en) * | 2017-02-17 | 2017-06-27 | 广东万家乐燃气具有限公司 | A kind of fast constant temperature gas heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106895587A (en) * | 2017-02-17 | 2017-06-27 | 广东万家乐燃气具有限公司 | A kind of fast constant temperature gas heater |
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