CN109931707B - Anti-blocking method for gas water heater - Google Patents
Anti-blocking method for gas water heater Download PDFInfo
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- CN109931707B CN109931707B CN201711371327.XA CN201711371327A CN109931707B CN 109931707 B CN109931707 B CN 109931707B CN 201711371327 A CN201711371327 A CN 201711371327A CN 109931707 B CN109931707 B CN 109931707B
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Abstract
The invention relates to an anti-blocking method for a gas water heater, which comprises a water inlet pipeline, wherein a water pump is arranged on the water inlet pipeline, and the anti-blocking method is characterized in that: the water pump is a direct-current water pump; the water pump is connected with the control circuit through an electric signal; the control circuit is also connected with an alarm device through an electric signal; when the control circuit detects that the rotating speed of the direct-current water pump is lower than a limit value, the control circuit closes the direct-current water pump and controls the water pump to enter a diagnosis and obstacle removal program; repeating the diagnostic and troubleshooting procedure at least twice; and if the rotating speed of the water pump detected by the third diagnosis and obstacle removing program is lower than the limit value during normal operation voltage, the control circuit closes the water pump and sends a prompt signal through the alarm device. The invention can directly detect the running condition of the water pump so as to accurately identify the locked rotor or the idle rotation of the water pump and discharge partial faults.
Description
Technical Field
The invention relates to the field of gas water heaters, in particular to an anti-blocking method for a gas water heater.
Background
At present, most household pipelines are long and complex in design, and when a gas water heater is used, the water heater can be discharged after cold water which is originally filled in the pipeline is discharged, so that water resources are wasted, and hot water waiting time is wasted. Therefore, a plurality of built-in circulating water heaters with water pumps appear on the market, and water in a pipeline is preheated before being extracted, so that the hot water end can be heated when being opened by water.
In the prior art, an alternating-current water pump is generally used, the alternating-current water pump only has a power supply end and does not have a feedback end, the rotating speed of the water pump and the information of the current of the water pump cannot be known in real time, the water pump can be ensured to be in safe operation, whether the water pump idles or stalls can only be indirectly judged through a water flow sensor in a pipeline, and the operation condition of the water pump cannot be truly reflected.
Disclosure of Invention
The invention aims to solve the technical problem of providing an anti-blocking method for a gas water heater, which can directly detect the running condition of a water pump so as to accurately identify the blocking or idling of the water pump and discharge partial faults.
The technical scheme adopted by the invention for solving the technical problems is as follows: the anti-blocking method of the gas water heater comprises a water inlet pipeline, wherein a water pump is arranged on the water inlet pipeline, and the anti-blocking method of the gas water heater is characterized in that:
the water pump is a direct-current water pump; the water pump is connected with the control circuit through an electric signal; the control circuit is also connected with an alarm device through an electric signal;
when the control circuit detects that the rotating speed of the direct-current water pump is lower than a limit value, the control circuit closes the direct-current water pump and controls the water pump to enter a diagnosis and obstacle removal program;
the diagnostic and troubleshooting procedure is as follows:
the control circuit controls the water pump to perform a first time period at a first rotating speed, then the control circuit directly raises the rotating speed of the water pump to a second rotating speed to operate for a second time period, and then the control circuit stops the operation of the water pump;
after a third time period, the control circuit starts the water pump according to the conventional operation voltage and detects whether the rotating speed of the water pump is lower than a limit value; if the rotating speed of the water pump reaches the normal operating rotating speed, the control circuit jumps out of the diagnosis and obstacle removal program and enters the normal operating program of the water pump; if the rotating speed of the water pump is still lower than the limit value, the diagnosis and obstacle elimination procedure is repeated;
repeating the diagnostic and troubleshooting procedure at least twice;
and if the rotating speed of the water pump detected by the third diagnosis and obstacle removing program is lower than the limit value during normal operation voltage, the control circuit closes the water pump and sends a prompt signal through the alarm device.
Preferably the diagnostic and troubleshooting procedure is repeated three times;
the first time period is 8-15 seconds, and the second time period is 3-5 seconds; the third time period is 50-100 seconds.
Preferably, the first rotational speed is a rotational speed at a low set voltage, and the second rotational speed is a rotational speed at a high set voltage.
The low set voltage is preferably 5-10V, and the high set voltage is 5-10V lower than the rated voltage of the water pump.
Compared with the prior art, the anti-blocking method for the gas water heater adopts the direct-current water pump, can know the information of the rotating speed of the water pump and the current of the water pump in real time by utilizing the feedback end of the direct-current water pump, and can automatically discharge small blocking faults through specific diagnosis and fault removal steps so that the water pump enters a normal operation program; for the blockage fault which cannot be discharged, warning information is prompted, so that the water pump is ensured to run safely; the method provided by the invention can accurately identify the locked rotor or the idle rotation of the water pump, greatly reduce the failure rate of the water pump and improve the user experience.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a control flow chart of the embodiment of the present invention
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 and 2, a water inlet pipe 1 of the gas water heater is provided with a direct-current water pump 2; the direct current water pump 2 is connected with a control circuit (not shown in the figure) through an electric signal, and the control circuit is connected with an alarm device through an electric signal.
The alarm device can be used for text prompt and can also be used for sound-light alarm. Any one of the prior art may be selected as desired.
In the embodiment, the running voltage of the direct current water pump is 0-40V, the normal working voltage is 30V, the low set voltage is 10V, and the high set voltage is 35V; the first time period is 10 seconds, the second time period is 3 seconds, and the third time period is 60 seconds.
The specific method comprises the following steps:
when the water pump works, when the control circuit detects that the rotating speed of the direct-current water pump is lower than a limit value, the control circuit closes the water pump and controls the water pump to enter a diagnosis and obstacle removal program;
the specific method of the diagnostic and troubleshooting procedure is as follows:
the control circuit line controls the water pump to rotate at the first rotating speed for a first time period, namely after the water pump operates at the voltage of 10V for 10 seconds, the control circuit directly raises the voltage to 35V, controls the water pump to operate at the second rotating speed at 35V for a second time period, namely 4 seconds, and then stops the water pump.
The water pump and the pipeline are cleaned by the low-speed running and the high-speed running of the water pump, and small blockage faults can be flushed away along with water flow under the high-speed action after the low speed.
After a third time period, namely 1 minute, the control circuit starts the water pump at a normal operating voltage, namely 30V, and detects whether the rotating speed of the water pump is lower than a limit value; if the rotating speed of the water pump reaches the normal rotating speed range, the diagnosis and troubleshooting program is skipped, and the normal water pump operation program is entered; if the rotating speed of the water pump is still lower than the limit value, recording the number of locked-rotor times and adding 1; and after stopping for 1 minute, the control circuit controls the water pump to enter the diagnosis and troubleshooting program again.
After starting the water pump again under normal voltage, if the rotating speed of the water pump is still lower than the limit value, the diagnosis and fault removal program is started again after stopping for 1 minute.
After the third diagnosis and obstacle removing procedure, if the rotating speed of the water pump is still lower than the limit value, the water pump or the pipeline is judged to be blocked, at the moment, the control circuit closes the water pump, and sends out a prompt signal through the alarm device to remind a user of water pump failure and manual intervention.
Claims (4)
1. The anti-blocking method of the gas water heater comprises a water inlet pipeline, wherein a water pump is arranged on the water inlet pipeline, and the anti-blocking method of the gas water heater is characterized in that:
the water pump is a direct-current water pump; the water pump is connected with the control circuit through an electric signal; the control circuit is also connected with an alarm device through an electric signal;
when the control circuit detects that the rotating speed of the direct-current water pump is lower than a limit value, the control circuit closes the direct-current water pump and controls the water pump to enter a diagnosis and obstacle removal program;
the diagnostic and troubleshooting procedure is as follows:
the control circuit controls the water pump to perform a first time period at a first rotating speed, then the control circuit directly raises the rotating speed of the water pump to a second rotating speed to operate for a second time period, and then the control circuit stops the operation of the water pump;
after a third time period, the control circuit starts the water pump according to the conventional operation voltage and detects whether the rotating speed of the water pump is lower than a limit value; if the rotating speed of the water pump reaches the normal operating rotating speed, the control circuit jumps out of the diagnosis and obstacle removal program and enters the normal operating program of the water pump; if the rotating speed of the water pump is still lower than the limit value, recording the number of locked-rotor times plus 1, and repeating the diagnosis and obstacle elimination procedures;
repeating the diagnostic and troubleshooting procedure at least twice;
and if the rotating speed of the water pump detected by the third diagnosis and obstacle removing program is lower than the limit value during normal operation voltage, the control circuit closes the water pump and sends a prompt signal through the alarm device.
2. The gas water heater anti-clogging method of claim 1, wherein:
the diagnostic and troubleshooting procedure was repeated three times;
the first time period is 8-15 seconds, and the second time period is 3-5 seconds; the third time period is 50-100 seconds.
3. The gas water heater blockage prevention method according to claim 1 or 2, wherein the first rotation speed is a rotation speed at a low set voltage, and the second rotation speed is a rotation speed at a high set voltage.
4. The anti-blocking method for the gas water heater according to claim 3, wherein the low set voltage is 5-10V, and the high set voltage is 5-10V lower than the rated voltage of the water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711371327.XA CN109931707B (en) | 2017-12-19 | 2017-12-19 | Anti-blocking method for gas water heater |
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| CN201711371327.XA CN109931707B (en) | 2017-12-19 | 2017-12-19 | Anti-blocking method for gas water heater |
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| CN109931707A CN109931707A (en) | 2019-06-25 |
| CN109931707B true CN109931707B (en) | 2020-10-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926033B (en) * | 2019-11-08 | 2021-07-16 | 华帝股份有限公司 | Anti-sticking control method for zero-cold-water gas hot water built-in water pump |
| CN111054688B (en) * | 2019-12-31 | 2020-08-04 | 浙江万得凯流体设备科技股份有限公司 | Control method of ultrasonic cleaning device |
| CN114200301B (en) * | 2020-09-16 | 2024-04-16 | 芜湖美的厨卫电器制造有限公司 | Motor locked rotor detection method, detection device, water heater and readable storage medium |
| CN113719457A (en) * | 2021-11-03 | 2021-11-30 | 华能（天津）煤气化发电有限公司 | Method for quickly switching multistage centrifugal cryogenic liquid pump of air separation device |
| CN115477345A (en) * | 2022-03-28 | 2022-12-16 | 青岛海尔施特劳斯水设备有限公司 | Control method for water purifier and water purifier |
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| JP4041035B2 (en) * | 2003-08-06 | 2008-01-30 | リンナイ株式会社 | Hot water circulation heat source machine |
| DE102004016270B4 (en) * | 2004-04-02 | 2006-02-23 | Boesche Marketing Gmbh | Cleaning device with at least one cleaning area, preferably dishwasher |
| CN2823067Y (en) * | 2005-08-04 | 2006-10-04 | 李小红 | Automatic cooling controlling device for automobile hub |
| CN201461357U (en) * | 2009-08-21 | 2010-05-12 | 石家庄强大机电设备制造有限公司 | System for intelligently controlling water pump |
| CN102536770B (en) * | 2010-12-31 | 2015-03-25 | 陈俊平 | Water pump with self-protection function |
| CN202187895U (en) * | 2011-06-30 | 2012-04-11 | 深圳市钜泰泵业有限公司 | Submersible pump control circuit and submersible pump with self-protection function |
| JP2013228117A (en) * | 2012-04-24 | 2013-11-07 | Mitsubishi Electric Corp | Storage type water heater |
| CN104141603B (en) * | 2014-06-24 | 2016-06-29 | 赛莱默(中国)有限公司 | There is the control system of water pump of energy-conserving action |
| CN206609140U (en) * | 2017-01-09 | 2017-11-03 | 中山市威世曼供热设备有限公司 | A kind of burnt gas wall hanging furnace with circulation self-checking function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3171979B2 (en) * | 1993-02-26 | 2001-06-04 | 東陶機器株式会社 | Circulating warm water heater |
| JP5259536B2 (en) * | 2009-09-09 | 2013-08-07 | 株式会社コロナ | Heat pump water heater |
| CN105275791A (en) * | 2015-11-13 | 2016-01-27 | 皇明太阳能股份有限公司 | Automatic water pump operation fault removal and control method |
| CN205875275U (en) * | 2016-03-30 | 2017-01-11 | 唐若权 | Take hot water supply's intelligent water supply system |
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| CN109931707A (en) | 2019-06-25 |
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