CN110926033A - Anti-sticking control method for zero-cold-water gas hot water built-in water pump - Google Patents
Anti-sticking control method for zero-cold-water gas hot water built-in water pump Download PDFInfo
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- CN110926033A CN110926033A CN201911088358.3A CN201911088358A CN110926033A CN 110926033 A CN110926033 A CN 110926033A CN 201911088358 A CN201911088358 A CN 201911088358A CN 110926033 A CN110926033 A CN 110926033A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 419
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 230000001186 cumulative effect Effects 0.000 claims description 4
- 230000002265 prevention Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
The invention belongs to the technical field of zero-cold water gas water heaters, and discloses a control method for preventing a built-in water pump of a zero-cold water gas water heater from being stuck, which comprises the following steps: collecting accumulated running stop time t of the built-in water pump; judging whether t meets the condition of anti-jamming operation; if yes, the accumulated stop running time t is reset, and the built-in water pump is set to a first power threshold value P0Starting, detecting the instantaneous rotating speed V of the built-in water pump after the first time threshold value of operation0Whether or not: v0> first rotational speed threshold V0'; if not, the built-in water pump uses a second power threshold value P1Operating, detecting the instantaneous rotating speed V of the built-in water pump after the third time threshold value of operation1Whether or not: v1Greater than second speed threshold V1'; and if not, after the built-in water pump runs for a fifth time threshold at the rated power P, the zero-cold-water gas water heater exits from the anti-jamming state. The method of the invention can start the built-in water pump with low power, not only can solve the problem of jamming, but also can reduce noise.
Description
Technical Field
The invention belongs to the technical field of zero-cold-water gas water heaters, and particularly relates to a control method for preventing a built-in water pump of a zero-cold-water gas water heater from being stuck.
Background
As shown in fig. 1, after the zero-cold-water gas water heater starts the zero-cold-water function, the built-in water pump of the water heater starts, after the start, the hot water pipeline water flows up and flows out through the water outlet pipe of the water heater, the outflow water flows back to the water heater through the water return pipeline to form a circulation pipeline, after the water heater detects a water flow signal, the burner is started, after the normal water circulation is carried out for 3-5 minutes, the water in the whole circulation pipeline can be completely heated to the temperature set by a user, when the user bathes, hot water exists in a shower head, and cold water cannot flow out first, namely zero cold water.
That is to say, the built-in water pump of the existing zero-cold water gas water heater is mainly used for circulating preheating, so that the water in the internal pipeline flows circularly, but the circulating function is mainly used in winter, and in summer, because the hot water demand per se is less, the function is less or basically not used, so that the built-in water pump does not operate for a long time, the water in the circulating pipeline does not flow for a long time, the rotor bearing of the built-in water pump is possibly attached by impurities in the water, and the built-in water pump cannot be restarted due to clamping stagnation.
Disclosure of Invention
In view of this, in order to solve the problem that the built-in water pump of the existing zero-cold water gas water heater is stuck due to long-term stagnation, the invention provides an anti-sticking control method for the built-in water pump of the zero-cold water gas water heater.
The technical scheme adopted by the invention is as follows: a control method for preventing a built-in water pump of a zero-cold-water gas water heater from being stuck comprises the following steps:
s1, electrifying the zero-cold-water gas water heater, and collecting the accumulated running stop time t of the built-in water pump;
s2, judging whether the accumulated stop operation time t meets the condition of anti-jamming operation of the zero-cold-water gas water heater; if not, returning to S1; if yes, clearing the accumulated stop operation time t, and performing S3;
s3, setting a water pump with first powerThreshold value P0Starting, detecting the instantaneous rotating speed V of the built-in water pump after the first time threshold value of operation0Whether or not: v0> first rotational speed threshold V0', wherein V0' less than a first power threshold P0A corresponding maximum rotational speed; if yes, the built-in water pump uses a first power threshold value P0After the operation for the second time threshold, the zero-cold-water gas water heater exits the anti-jamming state; if not, go to S4;
s4, setting the water pump in the water pump and setting a second power threshold value P1In operation, wherein P1＞P0Detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates for a third time threshold1Whether or not: v1Greater than second speed threshold V1’，V1' less than second Power threshold P1A corresponding maximum rotational speed; if yes, the built-in water pump uses a second power threshold value P1After the fourth time threshold value is operated, the zero-cold-water gas water heater exits the anti-blocking state; if not, go to S5;
and S5, after the built-in water pump runs for a fifth time threshold at the rated power P, the zero-cold-water gas water heater exits from the anti-jamming state.
Preferably, S5 further includes the steps of:
s51, detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates for the fifth time threshold at rated power2Whether or not: v2Greater than third speed threshold V2’，V2' less than the maximum rotating speed corresponding to the rated power of the built-in water pump; if so, the zero-cold-water gas water heater exits the anti-jamming state; if not, go to S52;
s52, detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates at the rated power for the sixth time threshold3Whether or not: v3＞V2'; if so, the zero-cold-water gas water heater exits the anti-jamming state; if not, the zero-cold-water gas water heater reports the fault and exits from the anti-jamming state.
Preferably, the conditions for the anti-sticking operation of the zero-cold-water gas water heater in the step S2 are as follows: the cumulative downtime t is 0 s.
Preferably, the conditions for the anti-sticking operation of the zero-cold-water gas water heater in the step S2 are as follows: the accumulated stopping time t is more than or equal to an accumulated stopping time threshold t ', wherein the accumulated stopping time threshold t' is more than 0 s.
Preferably, the cumulative outage threshold t' is 15 days or 30 days.
Preferably, in S3, the first power threshold P0＝(0.4～0.6)×P，V0’＝(0.7～0.9)×R0Wherein R is0The maximum rotating speed corresponding to the first power threshold value is obtained, and P is the rated power of the built-in water pump.
Preferably, in S4, P1＝(0.7～0.9)×P，V1’＝(0.7～0.9)×R1Wherein R is1And the maximum rotating speed corresponding to the second power threshold value is obtained, and the P is the rated power of the built-in water pump.
Preferably, in S51 and S52, the V2’＝(0.4～0.6)×R2Wherein R is2The maximum rotating speed is corresponding to the rated power of the built-in water pump.
Preferably, the zero-cold-water gas water heater enters an anti-blocking state at the cleaning stage after combustion, and the built-in water pump is started.
Preferably, the gas water heater is not ignited when the anti-sticking state is performed.
Compared with the prior art, the invention adopting the scheme has the beneficial effects that:
firstly, the accumulated running stop time t of the built-in water pump is used as a judgment condition for judging whether the zero-cold-water gas water heater needs to perform anti-blocking running or not; if not, the zero-cold-water gas water heater does not need to enter the anti-jamming state; if so, indicating that the zero-cold-water gas water heater does not need to enter the anti-jamming state;
when the zero-cold-water gas water heater enters the anti-blocking state, the built-in water pump firstly uses a first power threshold value P smaller than the rated power P0Starting the water pump by judging the instantaneous rotating speed V of the built-in water pump after the first time threshold value of operation0Whether or not: v0> first rotational speed threshold V0', wherein V0' less than a first power threshold P0A corresponding maximum rotational speed; if yes, the description is built-inThe water pump is not blocked or the blocking state of the built-in water pump is solved, the built-in water pump enters a state capable of normally running after a first time threshold, and at the moment, the built-in water pump is in a first power threshold P0After the operation for the second time threshold, the zero-cold-water gas water heater exits the anti-jamming state;
if not, the situation that the built-in water pump is still in a stuck state after the built-in water pump operates for the first time threshold value is shown, and the built-in water pump needs to be in the ratio P at the moment0Large second power threshold P1In operation, wherein P0＜P1Less than P, and detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates for a third time threshold1Whether or not: v1Greater than second speed threshold V1’，V1' less than second Power threshold P1A corresponding maximum rotational speed; if yes, the problem that the built-in water pump is blocked is solved, and therefore the built-in water pump is controlled to be at a second power threshold value P1After the fourth time threshold value is operated, the zero-cold-water gas water heater exits the anti-blocking state;
if not, the internal water pump is still in a stuck state after the internal water pump operates for the third time threshold, the internal water pump needs to operate at the rated power P again, and the internal water pump directly operates at the rated power P, so that the problem that the internal water pump is stuck can be solved under the condition that the internal water pump is normal, and the zero-cold-water gas water heater exits from the stuck state after the internal water pump operates for the fifth time threshold.
Drawings
FIG. 1 is a schematic diagram of the water flow direction of a prior zero cold water gas water heater, wherein the arrows indicate the water flow direction;
FIG. 2 is a flow chart of a control method for preventing a built-in water pump of a zero-cold-water gas water heater from being stuck according to an embodiment of the invention;
FIG. 3 is another flow chart of a control method for preventing the internal water pump of the zero-cold-water gas water heater from being stuck according to the embodiment of the invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a control method for preventing a built-in water pump of a zero-cold-water gas water heater from being stuck, and as shown in fig. 2, the method comprises the following steps:
s1, electrifying the zero-cold-water gas water heater, and collecting the accumulated running stop time t of the built-in water pump;
s2, judging whether the accumulated stop operation time t meets the condition of anti-jamming operation of the zero-cold-water gas water heater; if not, returning to S1; if yes, clearing the accumulated stop operation time t, and performing S3;
s3, setting a water pump to perform a first power threshold value P0Starting, detecting the instantaneous rotating speed V of the built-in water pump after the first time threshold value of operation0Whether or not: v0> first rotational speed threshold V0', wherein V0' less than a first power threshold P0A corresponding maximum rotational speed; if yes, the built-in water pump uses a first power threshold value P0After the operation for the second time threshold, the zero-cold-water gas water heater exits the anti-jamming state; if not, go to S4;
s4, setting the water pump in the water pump and setting a second power threshold value P1In operation, wherein P1＞P0Detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates for a third time threshold1Whether or not: v1Greater than second speed threshold V1', said V1' less than second Power threshold P1A corresponding maximum rotational speed; if yes, the built-in water pump uses a second power threshold value P1After the fourth time threshold value is operated, the zero-cold-water gas water heater exits the anti-blocking state; if not, go to S5;
and S5, after the built-in water pump runs for a fifth time threshold at the rated power P, the zero-cold-water gas water heater exits from the anti-jamming state.
In the embodiment, firstly, the accumulated stop operation time t of the built-in water pump is used as a judgment condition for judging whether the zero-cold-water gas water heater needs to perform anti-blocking operation; if not, the zero-cold-water gas water heater does not need to enter the anti-jamming state; if so, indicating that the zero-cold-water gas water heater does not need to enter the anti-jamming state;
when the zero-cold-water gas water heater enters the anti-blocking state, the built-in water pump firstly uses a first power threshold value P smaller than the rated power P0Starting the water pump by judging the instantaneous rotating speed V of the built-in water pump after the first time threshold value of operation0Whether or not: v0> first rotational speed threshold V0', wherein V0' less than a first power threshold P0A corresponding maximum rotational speed; if yes, the built-in water pump is indicated not to be clamped, or the clamping stagnation state of the built-in water pump is indicated to be solved, the built-in water pump enters a state capable of normally running after a first time threshold value, and at the moment, the built-in water pump is enabled to run at a first power threshold value P0After the operation for the second time threshold, the zero-cold-water gas water heater exits the anti-jamming state;
if not, the situation that the built-in water pump is still in a stuck state after the built-in water pump operates for the first time threshold value is shown, and the built-in water pump needs to be in the ratio P at the moment0Large second power threshold P1In operation, wherein P0＜P1Less than P, and detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates for a third time threshold1Whether or not: v1Greater than second speed threshold V1’，V1' less than second Power threshold P1A corresponding maximum rotational speed; if yes, the problem that the built-in water pump is blocked is solved, and therefore the built-in water pump is controlled to be at a second power threshold value P1After the fourth time threshold value is operated, the zero-cold-water gas water heater exits the anti-blocking state;
if not, the internal water pump is still in a stuck state after the internal water pump operates for the third time threshold, the internal water pump needs to operate at the rated power P again, and the internal water pump directly operates at the rated power P, so that the problem that the internal water pump is stuck can be solved under the condition that the internal water pump is normal, and the zero-cold-water gas water heater exits from the stuck state after the internal water pump operates for the fifth time threshold.
The existing problem that a built-in water pump is stuck is solved, and usually, after a zero-cold-water gas water heater enters an anti-sticking state, the built-in water pump is directly started at rated power, so that the water pump is relatively high in noise in the operation process, and is easily perceived by a user especially at night, and even the rest of the user is influenced.
While the anti-sticking control method of the embodiment solves the problem of anti-sticking of the built-in water pump, the built-in water pump is not directly started at the rated power, but is firstly started at the first power threshold value P smaller than the rated power0Starting, realizing anti-jamming with low power, and ensuring low noise; if the problem of jamming can not be solved by low power, the power is further increased, the effectiveness of jamming prevention is ensured, and the experience of a user is further improved.
In the present embodiment, the first power threshold P0And a second power threshold P1For presetting a value in advance in a controller of a zero-cold-water gas water heater, and P0And P1Are all smaller than the rated power P of the built-in water pump.
In this embodiment, the first time threshold, the second time threshold, the third time threshold, the fourth time threshold and the fifth time threshold are all values preset in advance in a controller of the zero-cold-water gas water heater.
For example, in this embodiment, the first time threshold and the third time threshold are both smaller than the second time threshold and the fourth time threshold; the first and third time thresholds may be 1s, while the second time threshold may be 7s, and the fourth and fifth time thresholds may both be 6 s;
in the embodiment, the duration of the zero-cold-water gas water heater from entering the anti-blocking state to exiting the anti-blocking state can be 8s, namely the duration of the built-in water pump from starting to stopping can be 8 s.
The controller in this embodiment may adopt various units that can implement adjustable digital signals, such as various unit machines, microcontrollers, DSPs (digital signal processors), and FPGAs (field programmable gate arrays).
In this embodiment, the controller can adopt a single chip microcomputer, and various control functions can be realized by programming the single chip microcomputer, for example, in this embodiment, functions such as judgment, control and processing are realized, mutual switching among various functions of the zero-cold-water gas water heater can be realized, the starting or stopping of the built-in water pump can be realized, and the single chip microcomputer has the advantages of facilitating interface calling and facilitating control.
In a specific embodiment, S5 further includes the following steps, as shown in fig. 3:
s51, detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates at the rated power P for a fifth time threshold2Whether or not: v2Greater than third speed threshold V2’，V2' less than the maximum rotating speed corresponding to the rated power P of the built-in water pump; if so, the zero-cold-water gas water heater exits the anti-jamming state; if not, go to S52;
s52, detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates at the rated power for the sixth time threshold3Whether or not: v3＞V2'; if so, the zero-cold-water gas water heater exits the anti-jamming state; if not, the zero-cold-water gas water heater reports the fault and exits from the anti-jamming state.
Generally, when the internal water pump is started at the rated power of the internal water pump, the anti-blocking problem of the internal water pump can be solved, but if the internal water pump fails, the anti-blocking problem cannot be solved, and at the moment, if the internal water pump is continuously operated, the internal water pump may cause irrecoverable damage to the internal water pump, so in the embodiment, after the internal water pump is operated at the rated power P for the fifth time threshold, the instantaneous rotating speed V after the internal water pump is operated for the fifth time threshold is detected again2Whether or not: v2Greater than third speed threshold V2’，V2' less than the maximum rotating speed corresponding to the rated power of the built-in water pump; if yes, the built-in water pump is in a normal running state, and meanwhile, the clamping stagnation problem of the built-in water pump is solved, so that the zero-cold-water gas water heater exits from a clamping stagnation prevention state;
if not, judging the instantaneous rotating speed V after the built-in water pump operates again at the rated power P for the sixth time threshold3Whether or not: v3＞V2'; if yes, the built-in is indicatedThe water pump can still be in a normal running state, and the problem of clamping stagnation of the built-in water pump is solved, so that the zero-cold-water gas water heater exits from the clamping stagnation prevention state;
if not, the built-in water pump is judged to be out of order, so that the zero-cold-water gas water heater reports the failure and exits from the anti-jamming state.
Therefore, the situation that the built-in water pump is still in a failure state and the operation is still prevented from being blocked, and the built-in water pump or the irreparable damage of the zero-cold-water gas water heater is caused can be effectively avoided.
In a specific embodiment, the conditions for the anti-sticking operation of the zero-cold-water gas water heater in S2 are as follows: the accumulated stop operation time t is 0 s;
because some users can directly pull out the power supply of the water heater when the zero-cold-water gas water heater is used up, and the accumulated running stop time t of the built-in water pump cannot be collected by the water heater at the moment, in this embodiment, the situation is considered as t being 0s, that is, after the users plug the water heater again, the water heater enters the anti-jamming state.
In a specific embodiment, the conditions for the anti-sticking operation of the zero-cold-water gas water heater in S2 are as follows: the accumulated stopping time t is more than or equal to an accumulated stopping time threshold t ', wherein the accumulated stopping time threshold t' is more than 0 s.
For the water heater always in the power-on state, the accumulated stop operation time t of the built-in water pump can be collected, and therefore the accumulated stop operation time t needs to be compared with an accumulated stop operation time threshold t' to determine whether the water heater needs to enter the anti-blocking state or not. In the implementation, if the accumulated stop operation time t is larger than or equal to the accumulated stop operation time threshold t', the water heater enters the anti-jamming state.
The accumulated operation stop time threshold t' is a value preset in the water heater controller in advance, and can be 24h (one day), 48h (two days), seven days and the like.
In particular embodiments, the cumulative outage threshold t' is 15 days or 30 days.
In a specific embodiment, in S3First power threshold value P0＝(0.4～0.6)×P，V0’＝(0.7～0.9)×R0Wherein R is0The maximum rotating speed corresponding to the first power threshold value is obtained, and P is the rated power of the built-in water pump.
In this embodiment, in order to ensure that the built-in water pump is not only able to solve the problem of the jamming of the built-in water pump, but also to ensure that the built-in water pump is started with a smaller power so as to ensure that the noise is smaller when the problem of the jamming is solved, the first power threshold P in this embodiment is used0The problem of built-in water pump jamming can be solved, noise can be ensured to be low, and the first power threshold value P is preferably selected0＝0.5×P；
The built-in water pump uses a first power threshold value P0Instantaneous speed V after a first time threshold after start-up0If it is too small, there may be a problem that the sticking problem of the built-in water pump is not solved, so V is required0’＝(0.7～0.9)×R0Preferred is V0’＝0.8×R0Then at this time only V0＞V0' if yes, the built-in water pump is indicated to be at a first power threshold value P0The problem that the built-in water pump is blocked after starting can be solved.
In this embodiment, R0May be 1000 r/min.
In a specific embodiment, in S4, P1＝(0.7～0.9)P，V1’＝(0.7～0.9)×R1Wherein R is1And P is the maximum rotating speed corresponding to the second power threshold, and is the rated power of the built-in water pump.
In this embodiment, in order to ensure that the built-in water pump is not only able to solve the problem of the jamming of the built-in water pump, but also to ensure that the built-in water pump is started with a smaller power so as to ensure that the noise is smaller when the problem of the jamming is solved, the second power threshold P in this embodiment is used1P is (0.7 to 0.9) and P1＞P0Therefore, the problem of clamping stagnation of the built-in water pump can be solved, and the first power threshold value P which is low in noise and is preferred can be ensured1＝0.8×P；
The built-in water pump is used for controlling the second power threshold value P1Instantaneous speed V after a third time threshold after start-up1If it is too small, the problem of the built-in water pump may be stuck and still not solved, so V is required1’＝(0.7～0.9)×R1Preferred is V1’＝0.8×R1Then at this time only V1＞V1' if yes, the built-in water pump is indicated to have a second power threshold value P1The problem that the built-in water pump is blocked after starting can be solved.
In this embodiment, R1May be 2000 r/min.
In a specific embodiment, V in S51 and S522’＝(0.4～0.6)×R2Wherein R is2The maximum rotating speed is corresponding to the rated power of the built-in water pump; if the built-in water pump runs at rated power for the instant rotating speed V after the fifth time threshold2Satisfy V2＞(0.4～0.6)×R2If the water pump is in the normal operation state, the built-in water pump can still normally operate and does not have a fault; and if V2Does not satisfy V2＞(0.4～0.6)×R2If the internal water pump is in the sixth time threshold, judging that the internal water pump is in the sixth time threshold, and judging that the internal water pump is in the sixth time threshold, wherein the internal water pump is in the sixth time threshold, and judging that the internal water pump is in the sixth time threshold3Whether or not to satisfy V3＞(0.4～0.6)×R2(ii) a If the condition is met, the built-in water pump can still normally operate, and no fault occurs; if the internal water pump is still not satisfied, the internal water pump is indicated to be in failure; preferably, V2’＝0.5×R2。
In this embodiment, R2May be 4000 r/min.
In a specific embodiment, the zero-cold-water gas water heater enters an anti-blocking state at the cleaning stage after combustion, and a built-in water pump is started; because the noise of the zero-cold-water gas water heater is high in the cleaning stage after combustion, when the zero-cold-water gas water heater enters the anti-blocking state, a user can basically not perceive the noise caused by blocking.
In a specific embodiment, the gas water heater is not ignited when in a clamping stagnation prevention state; since the water in the circulation line is heated if ignited, and this part of the hot water may not be needed by the user, which results in a waste of gas.
The working process is as follows:
s1, electrifying the zero-cold-water gas water heater, and collecting the accumulated stop operation time t (for example, 0S or 15 days) of the built-in water pump;
s2, judging whether the accumulated stop operation time t meets the condition of anti-jamming operation of the zero-cold-water gas water heater, for example, whether t is equal to 0S or not, or whether t is more than or equal to 15 days or not;
if not, returning to S1; if yes, clearing the accumulated stop operation time t, and performing S3;
s3, setting a water pump to perform a first power threshold value P0Start up, wherein P0The power is 0.5 multiplied by P, and P is the rated power of the built-in water pump; detecting the instantaneous speed V of the internal water pump after a first time threshold (for example 1s) of operation0Whether or not: v0> first rotational speed threshold V0', wherein V0’＝0.8R0，R0Is a first power threshold value P0A corresponding maximum rotational speed;
if yes, a built-in water pump is used for pumping water by P0After the operation for the second time threshold (7s), the zero-cold-water gas water heater exits the anti-jamming state;
if not, go to S4;
s4, setting the water pump in the water pump and setting a second power threshold value P1Operation wherein said P1Detecting the instantaneous speed V of the built-in water pump after a third time threshold (for example, 1s) of operation1Whether or not: v1Greater than second speed threshold V1', wherein V1’＝0.8R1Said R is1Is P1A corresponding maximum rotational speed;
if yes, the built-in water pump uses a second power threshold value P1After a fourth time threshold (for example, 6s) is operated, the zero-cold-water gas water heater exits the anti-jamming state;
if not, go to S5;
s5, after the built-in water pump operates for a fifth time threshold (for example, 6S) at the rated power P, detecting the instantaneous rotating speed V after the built-in water pump operates for the fifth time threshold (for example, 6S) at the rated power2；
S51, judging the instantaneous speed V2Whether or not: v2Greater than third speed threshold V2', wherein V2’＝0.5R2，R2The maximum rotating speed corresponding to the rated power of the built-in water pump;
if so, the zero-cold-water gas water heater exits the anti-jamming state;
if not, go to S52;
s52, after the built-in water pump runs for a sixth time threshold (for example, 8S) at rated power, detecting the instantaneous rotating speed V of the built-in water pump at the sixth time threshold (for example, 8S)3Whether or not: v3＞V2', wherein V2’＝0.5R2，R2The maximum rotating speed corresponding to the rated power of the built-in water pump;
if so, the zero-cold-water gas water heater exits the anti-jamming state;
if not, the zero-cold-water gas water heater reports the fault and exits from the anti-jamming state.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A control method for preventing the built-in water pump of a zero-cold water gas water heater from being blocked is characterized by comprising the following steps:
s1, electrifying the zero-cold-water gas water heater, and collecting the accumulated running stop time t of the built-in water pump;
s2, judging whether the accumulated stop operation time t meets the condition of anti-jamming operation of the zero-cold-water gas water heater; if not, returning to S1; if yes, clearing the accumulated stop operation time t, and performing S3;
s3, setting the built-in water pump to be at a first power threshold value P0Starting, detecting the instantaneous rotating speed V of the built-in water pump after the first time threshold value of operation0Whether or not:V0> first rotational speed threshold V0', wherein said V0' less than the first power threshold P0A corresponding maximum rotational speed; if yes, the built-in water pump uses a first power threshold value P0After the operation for the second time threshold, the zero-cold-water gas water heater exits the anti-blocking state; if not, go to S4;
s4, setting the built-in water pump to be at a second power threshold value P1Operation wherein said P1＞P0Detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates for a third time threshold1Whether or not: v1Greater than second speed threshold V1', said V1' less than the second power threshold P1A corresponding maximum rotational speed; if yes, the built-in water pump uses a second power threshold value P1After the fourth time threshold value is operated, the zero-cold-water gas water heater exits the anti-blocking state; if not, go to S5;
and S5, after the built-in water pump runs for a fifth time threshold at the rated power P, the zero-cold-water gas water heater exits from the anti-jamming state.
2. The control method for preventing the seizure of the built-in water pump of the zero-cold-water gas water heater as claimed in claim 1, wherein said S5 further comprises the steps of:
s51, detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates at the rated power for a fifth time threshold2Whether or not: v2Greater than third speed threshold V2', said V2' less than the maximum rotating speed corresponding to the rated power of the built-in water pump; if so, the zero-cold-water gas water heater exits the anti-jamming state; if not, go to S52;
s52, detecting the instantaneous rotating speed V of the built-in water pump after the built-in water pump operates at the rated power for the sixth time threshold3Whether or not: v3＞V2'; if so, the zero-cold-water gas water heater exits the anti-jamming state; if not, the zero-cold-water gas water heater reports the fault and exits from the anti-jamming state.
3. The anti-sticking control method for the built-in water pump of the zero-cold-water gas water heater as claimed in claim 1, wherein the anti-sticking operation conditions of the zero-cold-water gas water heater in S2 are as follows: the cumulative stop operation time t is 0 s.
4. The anti-sticking control method for the built-in water pump of the zero-cold-water gas water heater as claimed in claim 1, wherein the anti-sticking operation conditions of the zero-cold-water gas water heater in S2 are as follows: the accumulated stop operation time t is more than or equal to an accumulated stop operation time threshold t ', wherein the accumulated stop operation time threshold t' is more than 0 s.
5. The method for controlling the anti-sticking of the water pump built-in of the zero-cold-water gas water heater as claimed in claim 4, wherein the accumulated operation stop time threshold t' is 15 days or 30 days.
6. The method for controlling anti-sticking of a built-in water pump of a zero-cold-water gas water heater as claimed in claim 1, wherein in said S3, said first power threshold P0＝(0.4～0.6)×P，V0’＝(0.7～0.9)×R0Wherein R is0And the maximum rotating speed is corresponding to the first power threshold, and the P is the rated power of the built-in water pump.
7. The method for controlling anti-sticking of a built-in water pump of a zero-cold-water gas water heater as claimed in claim 1, wherein in S4, P is1＝(0.7～0.9)×P，V1’＝(0.7～0.9)×R1Wherein R is1And the maximum rotating speed corresponding to the second power threshold value is obtained, and the P is the rated power of the built-in water pump.
8. The method as claimed in claim 2, wherein in said S51 and S52, said V is set to be equal to or greater than V2’＝(0.4～0.6)×R2Wherein R is2The maximum rotating speed is corresponding to the rated power of the built-in water pump.
9. The anti-sticking control method for the built-in water pump of the zero-cold-water gas water heater as claimed in any one of claims 1 to 8, characterized in that the built-in water pump is started when the zero-cold-water gas water heater enters an anti-sticking state in a cleaning stage after combustion.
10. The method for controlling anti-sticking of a built-in water pump of a zero-cold-water gas water heater as claimed in any one of claims 1 to 8, wherein the gas water heater is not ignited in the anti-sticking state.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR940010706B1 (en) * | 1991-12-12 | 1994-10-24 | Gold Star Co | Anti-noise apparatus for gas boiler |
| CN105736343A (en) * | 2016-02-23 | 2016-07-06 | 沈云明 | Water pump control system and control method for preventing rusting and blocking and realizing small-flow work |
| CN106403292A (en) * | 2016-09-05 | 2017-02-15 | 广东万家乐燃气具有限公司 | Hot-water circulation device with direct-flow pump |
| CN109236676A (en) * | 2018-10-11 | 2019-01-18 | 长沙迪沃机械科技有限公司 | A kind of anti-clogging control method of floating pump |
| CN109931707A (en) * | 2017-12-19 | 2019-06-25 | 宁波方太厨具有限公司 | Gas heater anti-blocking method |
-
2019
- 2019-11-08 CN CN201911088358.3A patent/CN110926033B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR940010706B1 (en) * | 1991-12-12 | 1994-10-24 | Gold Star Co | Anti-noise apparatus for gas boiler |
| CN105736343A (en) * | 2016-02-23 | 2016-07-06 | 沈云明 | Water pump control system and control method for preventing rusting and blocking and realizing small-flow work |
| CN106403292A (en) * | 2016-09-05 | 2017-02-15 | 广东万家乐燃气具有限公司 | Hot-water circulation device with direct-flow pump |
| CN109931707A (en) * | 2017-12-19 | 2019-06-25 | 宁波方太厨具有限公司 | Gas heater anti-blocking method |
| CN109236676A (en) * | 2018-10-11 | 2019-01-18 | 长沙迪沃机械科技有限公司 | A kind of anti-clogging control method of floating pump |
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