CN105864014B - Water pump control method, apparatus and system - Google Patents
Water pump control method, apparatus and system Download PDFInfo
- Publication number
- CN105864014B CN105864014B CN201610261187.XA CN201610261187A CN105864014B CN 105864014 B CN105864014 B CN 105864014B CN 201610261187 A CN201610261187 A CN 201610261187A CN 105864014 B CN105864014 B CN 105864014B
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- Prior art keywords
- power
- pump
- motor
- water pump
- pump motor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The embodiment of the invention discloses a kind of water pump control method, apparatus and system.The water pump control method includes：Obtain the hydraulic pressure at water pump pump house；Hydraulic pressure at the water pump pump house is converted to the power of pump motor；According to the power of the pump motor, the motor operating state of the water pump is controlled.When the technical scheme of the embodiment of the present invention solves current pump motor power appearance exception, there is provided a kind of safety, the water pump control method saved for the problem of there is power consumption height and there is potential safety hazard.
Description
Technical field
The present embodiments relate to water pump control technology, more particularly to a kind of water pump control method, apparatus and system.
Background technology
Water pump is a kind of mechanical device for being mainly used to transports liquid.In daily production and life, it is often necessary to water
The motor operating state of pump carries out control promptly and accurately.
At present, when the power of motor of water pump is less than predetermined power or during more than the upper limit of the power, otherwise the motor of water pump after
Continuous bringing onto load operating, otherwise shut down immediately.And when the power of motor of water pump occurs abnormal, if the motor of water pump continues band
Load runs well, and not only consumes energy, and easily burn motor；If the motor of water pump shuts down immediately, on the one hand it can not make
Operating personnel accurately recognize that the reason for this kind of motor is stalled is due to that power is extremely caused, on the other hand, the motor of water pump
After stalling, because the electric capacity in motor also stores electric current, thus there is potential safety hazard to maintenance personal.
The content of the invention
The present invention provides a kind of water pump control method, apparatus and system, to provide a kind of safety, the water pump controlling party of energy-conservation
Method.
In a first aspect, the embodiments of the invention provide a kind of water pump control method, including：
Obtain the hydraulic pressure at water pump pump house；
Hydraulic pressure at the water pump pump house is converted to the power of pump motor；
According to the power of the pump motor, the motor operating state of the water pump is controlled.
Alternatively, the power according to the pump motor, controls the motor operating state of the water pump, including：
Judge whether the power of the pump motor is less than predetermined power；
When the power of the pump motor is less than the predetermined power, alarm signal is generated；
Receive the alarm signal and display alarm；
The motor operating state of the water pump is controlled to idle mode.
Alternatively, the power according to the pump motor, controls the motor operating state of the water pump, including：
Judge whether the power of the pump motor is more than the default upper limit of the power；
When the power of the pump motor is more than the upper limit of the power, alarm signal is generated；
Receive the alarm signal and display alarm；
The motor operating state of the water pump is controlled to idle mode.
Alternatively, after motor operating state to the idle mode of the control water pump, in addition to：
Motor is waited to restart preset time；
After waiting the motor to restart preset time, judge whether the power of the pump motor is more than or equal to institute
State predetermined power and less than the default upper limit of the power；
If the power of the pump motor is more than or equal to the predetermined power and less than the default upper limit of the power, start institute
Pump motor is stated to normal operation mode；
If the power of the pump motor is less than the predetermined power, the return execution wait motor is restarted pre-
If the step of time.
Second aspect, the embodiment of the present invention additionally provides a kind of pump control unit, and the pump control unit includes：
Hydraulic pressure acquisition module, for obtaining the hydraulic pressure at water pump pump house；
Hydraulic pressure modular converter, the power for the hydraulic pressure at the water pump pump house to be converted to pump motor；
Pump motor control module, for the power according to the pump motor, controls the motor operation shape of the water pump
State.
Alternatively, the pump motor control module, including：
First judging unit, for judging whether the power of the pump motor is less than predetermined power；
First alarm signal generation unit, for when the power of the pump motor is less than the predetermined power, generating
Alarm signal；
First alarm unit, for receiving the alarm signal and display alarm；
First running status control unit, for controlling the motor operating state of the water pump to idle mode.
Alternatively, the pump motor control module, including：
Second judging unit, for judging whether the power of the pump motor is more than the default upper limit of the power；
Second alarm signal generation unit, for when the power of the pump motor is more than the upper limit of the power, generating
Alarm signal；
Second alarm unit, for receiving the alarm signal and display alarm；
Second running status control unit, for controlling the motor operating state of the water pump to idle mode.
Alternatively, the pump motor control module, in addition to：
Preset time waits unit, for waiting motor to restart preset time；
3rd judging unit, for after waiting the motor to restart preset time, judging the work(of the pump motor
Whether rate is more than or equal to the predetermined power and less than the default upper limit of the power；
Motor restarts unit, for being more than or equal to the predetermined power and less than pre- when the power of the pump motor
If the upper limit of the power when, start the pump motor to normal operation mode；
Return and perform step unit, for when the power of the pump motor is less than the predetermined power, returning and performing
The step of wait motor restarts preset time.
The third aspect, the embodiment of the present invention additionally provides a kind of control system of water pump, and the control system of water pump includes this hair
The pump control unit that bright any embodiment is provided；The control system of water pump also includes：
Sensor, is arranged on the water inlet of pump house, for gathering the hydraulic pressure at the water pump pump house；
The pump control unit configuration is in the processor or mobile terminal of pump motor；
Executive component, the instruction for being produced according to the pump control unit controls the motor operating state of water pump.
The present invention is by obtaining the hydraulic pressure at water pump pump house；Hydraulic pressure at the water pump pump house is converted into pump motor
Power；According to the power of the pump motor, the motor operating state of the water pump is controlled, current pump motor power is solved
When occurring abnormal, there is provided a kind of safety, the water pump control method of energy-conservation for the problem of there is power consumption height and there is potential safety hazard.
Brief description of the drawings
Fig. 1 is a kind of flow chart of water pump control method in the embodiment of the present invention one；
Fig. 2 is a kind of flow chart of water pump control method in the embodiment of the present invention two；
Fig. 3 is a kind of flow chart of water pump control method in the embodiment of the present invention three；
Fig. 4 is a kind of structure chart of pump control unit in the embodiment of the present invention four.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment one
Fig. 1 is a kind of flow chart for water pump control method that the embodiment of the present invention one is provided, and the present embodiment is applicable to need
The situation of pump motor running status control is carried out, this method can be performed by pump control unit, and wherein the device can
So that by software and/or hardware realization, with reference to Fig. 1, the water pump control method that the present embodiment is provided specifically may include steps of：
Hydraulic pressure at S110, acquisition water pump pump house.
Wherein, the hydraulic pressure at the water pump pump house can be obtained by the sensor installed in pump house water inlet, described to pass
The preferred pressure sensor of sensor.When water level at water pump pump house is low, pressure of the water pump in water is just small；At water pump pump house
When water level is high, pressure of the water pump in water is just big.The water at water pump pump house can be collected precisely in real time using sensor
Pressure.
S120, the power that the hydraulic pressure at the water pump pump house is converted to pump motor.
Specifically, changed by A/D, the hydraulic pressure at water pump pump house is converted into digital quantity；The digital quantity through processor at
Reason can be converted into the power of pump motor.
S130, the power according to the pump motor, control the motor operating state of the water pump.
Specifically, according to the size of the pump motor performance number, the motor operating state of the water pump is controlled.
The technical scheme of the present embodiment is changed the hydraulic pressure at the water pump pump house by obtaining the hydraulic pressure at water pump pump house
For the power of pump motor, according to the power of the pump motor, the motor operating state of the water pump is controlled, is solved at present
When pump motor power occurs abnormal, there is provided the water of a kind of safety, energy-conservation for the problem of there is power consumption height and there is potential safety hazard
Method for controlling pump.
Embodiment two
The present embodiment provides a kind of water pump control method there is provided one kind according to motor work(based on above-described embodiment
The preferred scheme of rate controlled motor running status.Fig. 2 is a kind of flow chart of water pump control method in the embodiment of the present invention two,
With reference to Fig. 2, the water pump control method that the present embodiment is provided can include as follows：
Hydraulic pressure at S210, acquisition water pump pump house.
S220, the power that the hydraulic pressure at the water pump pump house is converted to pump motor.
S230, judge the pump motor power whether be less than predetermined power, if so, S240 is then performed, if it is not, then not
Give processing.
Specifically, the predetermined power can be the 85% of pump motor rated power.If for example, pump motor is specified
Power is 100W, then predetermined power is 85W.
S240, the pump motor power be less than the predetermined power when, generate alarm signal.
S250, the reception alarm signal and display alarm.
Wherein, the mode of the display alarm can be sound and light alarm mode.
S260, the motor operating state of the control water pump are to idle mode.
Specifically, so that rated power is 100W pump motor as an example, the power bracket that motor is under idle mode is
8.5W~15W.
In the present embodiment, after S260, it can also include：
A, wait motor restart preset time；
Wherein, the motor restarts preset time and could be arranged to 5S~10S.
B, after waiting the motor to restart preset time, judge whether the power of the pump motor is more than or equal to
The predetermined power and less than the default upper limit of the power；
Wherein, the upper limit of the power can be the 120% of pump motor rated power.If for example, pump motor is specified
Power is 100W, then the upper limit of the power is 120W.
If the power of C, the pump motor is more than or equal to the predetermined power and less than the default upper limit of the power, start
The pump motor is to normal operation mode；
If the power of D, the pump motor is less than the predetermined power, returns to the execution wait motor and restart
The step of preset time.
The technical scheme of the present embodiment is changed the hydraulic pressure at the water pump pump house by obtaining the hydraulic pressure at water pump pump house
For the power of pump motor, judge whether the power of the pump motor is less than predetermined power, in the power of the pump motor
During less than the predetermined power, alarm signal is generated, the alarm signal and display alarm is received, the motor of the water pump is controlled
Running status is to idle mode, when solving current pump motor power appearance exception, there is power consumption height and there is potential safety hazard
The problem of there is provided a kind of safety, the water pump control method of energy-conservation, and when pump motor power occurs abnormal, realize
Real-time, the accurate alarm of motor abnormality situation.
Embodiment three
The present embodiment provides a kind of water pump control method based on above-described embodiment, specifically there is provided a kind of power
Processing scheme when larger.Fig. 3 is a kind of flow chart of water pump control method in the embodiment of the present invention three, with reference to Fig. 3, this reality
Apply example offer water pump control method can include it is as follows：
Hydraulic pressure at S310, acquisition water pump pump house.
S320, the power that the hydraulic pressure at the water pump pump house is converted to pump motor.
S330, judge whether the power of the pump motor is more than the default upper limit of the power, if so, then perform S340, if
It is no, then disregard.
Specifically, the upper limit of the power can be the 120% of pump motor rated power.If for example, the volume of pump motor
Power is determined for 100W, then the upper limit of the power is 120W.
S340, when the pump motor power be more than the upper limit of the power when, generate alarm signal.
S350, the reception alarm signal and display alarm.
Wherein, the mode of the display alarm can be sound and light alarm mode.
S360, the motor operating state of the control water pump are to idle mode.
Specifically, so that rated power is 100W pump motor as an example, the power bracket that motor is under idle mode is
8.5W~15W.
In the present embodiment, after S360, it can also include：
A, wait motor restart preset time；
Wherein, the motor restarts preset time and could be arranged to 5S~10S.
B, after waiting the motor to restart preset time, judge whether the power of the pump motor is more than or equal to
The predetermined power and less than the default upper limit of the power；
Specifically, the predetermined power can be pump motor rated power 85%, if for example, pump motor it is specified
Power is 100W, then predetermined power is 85W.The upper limit of the power can be the 120% of pump motor rated power, for example,
If the rated power of pump motor is 100W, the upper limit of the power is 120W.
If the power of C, the pump motor is more than or equal to the predetermined power and less than the default upper limit of the power, start
The pump motor is to normal operation mode；
If the power of D, the pump motor is less than the predetermined power, returns to the execution wait motor and restart
The step of preset time.
The technical scheme of the present embodiment is changed the hydraulic pressure at the water pump pump house by obtaining the hydraulic pressure at water pump pump house
For the power of pump motor, judge whether the power of the pump motor is more than the default upper limit of the power, when the pump motor
Power when being more than the upper limit of the power, generate alarm signal, receive the alarm signal and display alarm, control the water pump
Motor operating state to idle mode, when solving current pump motor power and occurring abnormal, there is power consumption high and there is peace
Entirely there is provided a kind of safety, the water pump control method of energy-conservation the problem of hidden danger, and when pump motor power occurs abnormal,
Realize real-time, the accurate alarm of motor abnormality situation.
Example IV
Fig. 4 is a kind of structure chart of pump control unit in the embodiment of the present invention four, and the present embodiment is applicable to needs
Carry out the situation of pump motor running status control.With reference to Fig. 4, the structure for the pump control unit that the present embodiment is provided specifically may be used
With as follows：
Hydraulic pressure acquisition module 410, for obtaining the hydraulic pressure at water pump pump house；
Hydraulic pressure modular converter 420, the power for the hydraulic pressure at the water pump pump house to be converted to pump motor；
Pump motor control module 430, for the power according to the pump motor, controls the motor operation of the water pump
State.
Further, the pump motor control module 430, including：
First judging unit, for judging whether the power of the pump motor is less than predetermined power；
First alarm signal generation unit, for when the power of the pump motor is less than the predetermined power, generating
Alarm signal；
First alarm unit, for receiving the alarm signal and display alarm；
First running status control unit, for controlling the motor operating state of the water pump to idle mode.
Further, the pump motor control module 430, including：
Second judging unit, for judging whether the power of the pump motor is more than the default upper limit of the power；
Second alarm signal generation unit, for when the power of the pump motor is more than the upper limit of the power, generating
Alarm signal；
Second alarm unit, for receiving the alarm signal and display alarm；
Second running status control unit, for controlling the motor operating state of the water pump to idle mode.
Further, the pump motor control module 430, in addition to：
Preset time waits unit, for waiting motor to restart preset time；
3rd judging unit, for after waiting the motor to restart preset time, judging the work(of the pump motor
Whether rate is more than or equal to the predetermined power and less than the default upper limit of the power；
Motor restarts unit, for being more than or equal to the predetermined power and less than pre- when the power of the pump motor
If the upper limit of the power when, start the pump motor to normal operation mode；
Return and perform step unit, for when the power of the pump motor is less than the predetermined power, returning and performing
The step of wait motor restarts preset time.
The pump control unit that the present embodiment is provided, the water pump control method provided with any embodiment of the present invention belongs to
Same inventive concept, can perform the water pump control method that any embodiment of the present invention is provided, possesses execution water pump control method
Corresponding functional module and beneficial effect.Not ins and outs of detailed description in the present embodiment, reference can be made to the present invention is any real
The water pump control method of example offer is provided.
Embodiment five
The present embodiment also provides a kind of control system of water pump.The system includes the water pump that any embodiment of the present invention is provided
Control device, in addition to：
Sensor, is arranged on the water inlet of pump house, for gathering the hydraulic pressure at the water pump pump house；
The pump control unit configuration is in the processor or mobile terminal of pump motor；
Executive component, the instruction for being produced according to the pump control unit controls the motor operating state of water pump.
Specifically, the mobile terminal that pump control unit is configured, can transfer to operating personnel, water pump pump house is carried out remote
Range monitoring is managed.
Said system can perform the method that any embodiment of the present invention is provided, and possess the corresponding functional module of execution method
And beneficial effect.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art it is various it is obvious change,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (5)
1. a kind of water pump control method, it is characterised in that including：
Obtain the hydraulic pressure at water pump pump house；
Hydraulic pressure at the water pump pump house is converted to the power of pump motor；
Judge whether the power of the pump motor is less than predetermined power；It is less than the default work(in the power of the pump motor
During rate, alarm signal is generated；Receive the alarm signal and display alarm；The motor operating state of water pump is controlled to the mould that dallies
Formula；Or
Judge whether the power of the pump motor is more than the default upper limit of the power；Described in being more than when the power of the pump motor
During the upper limit of the power, alarm signal is generated；Receive the alarm signal and display alarm；Control the motor operating state of the water pump
To idle mode.
2. a kind of water pump control method according to claim 1, it is characterised in that the motor fortune of the control water pump
After row state to idle mode, in addition to：
Motor is waited to restart preset time；
After waiting the motor to restart preset time, judge the power of the pump motor whether more than or equal to described pre-
If power and less than the default upper limit of the power；
If the power of the pump motor is more than or equal to the predetermined power and less than the default upper limit of the power, start the water
Pump motor is to normal operation mode；
If the power of the pump motor is less than the predetermined power, when the return execution wait motor restarts default
Between the step of.
3. a kind of pump control unit, it is characterised in that including：
Hydraulic pressure acquisition module, for obtaining the hydraulic pressure at water pump pump house；
Hydraulic pressure modular converter, the power for the hydraulic pressure at the water pump pump house to be converted to pump motor；
Pump motor control module, the pump motor control module includes the first judging unit, for judging the water pump electricity
Whether the power of machine is less than predetermined power；First alarm signal generation unit, is less than institute for the power in the pump motor
When stating predetermined power, alarm signal is generated；First alarm unit, for receiving the alarm signal and display alarm；First fortune
Row status control unit, for controlling the motor operating state of the water pump to idle mode；Or
The pump motor control module includes the second judging unit, for judging it is pre- whether the power of the pump motor is more than
If the upper limit of the power；Second alarm signal generation unit, for when the pump motor power be more than the upper limit of the power when,
Generate alarm signal；Second alarm unit, for receiving the alarm signal and display alarm；The control of second running status is single
Member, for controlling the motor operating state of the water pump to idle mode.
4. a kind of pump control unit according to claim 3, it is characterised in that the pump motor control module, also
Including：
Preset time waits unit, for waiting motor to restart preset time；
3rd judging unit, for after waiting the motor to restart preset time, judging the power of the pump motor to be
It is no to be more than or equal to the predetermined power and less than the default upper limit of the power；
Motor restarts unit, for being more than or equal to the predetermined power and less than default when the power of the pump motor
During the upper limit of the power, start the pump motor to normal operation mode；
Return and perform step unit, for when the power of the pump motor is less than the predetermined power, returning to execution described
Wait the step of motor restarts preset time.
5. a kind of control system of water pump, it is characterised in that including：Any described pump control unit of claim 3 or 4；
Also include：
Sensor, is arranged on the water inlet of pump house, for gathering the hydraulic pressure at the water pump pump house；
The pump control unit configuration is in the processor or mobile terminal of pump motor；
Executive component, the instruction for being produced according to the pump control unit controls the motor operating state of water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610261187.XA CN105864014B (en) | 2016-04-25 | 2016-04-25 | Water pump control method, apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610261187.XA CN105864014B (en) | 2016-04-25 | 2016-04-25 | Water pump control method, apparatus and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105864014A CN105864014A (en) | 2016-08-17 |
| CN105864014B true CN105864014B (en) | 2017-10-13 |
Family
ID=56628334
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610261187.XA Active CN105864014B (en) | 2016-04-25 | 2016-04-25 | Water pump control method, apparatus and system |
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| CN (1) | CN105864014B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332102B (en) * | 2019-07-23 | 2021-08-20 | 珠海格力电器股份有限公司 | Control method and device of automatic emptying water pump, corresponding equipment and storage medium |
| CN117846949A (en) * | 2020-07-17 | 2024-04-09 | 安徽威灵汽车部件有限公司 | Dry rotation detection method and device of electronic water pump, electronic equipment and storage medium |
| CN113180572A (en) * | 2021-03-16 | 2021-07-30 | 青岛海尔洗碗机有限公司 | Control method of dish-washing machine and dish-washing machine |
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| 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 |
| CN203081721U (en) * | 2013-01-10 | 2013-07-24 | 爱环吴世(苏州)环保有限公司 | Water pump energy-saving system |
| CN204851614U (en) * | 2015-07-28 | 2015-12-09 | 山东圣凯节能投资有限公司 | Energy -efficient water pump economizer |
| CN204984822U (en) * | 2015-08-22 | 2016-01-20 | 杨文德 | High pressure water pump control box |
| CN105490462A (en) * | 2015-12-23 | 2016-04-13 | 卧龙电气集团股份有限公司 | Intelligently controlled integrated variable frequency motor system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0333495A (en) * | 1989-06-29 | 1991-02-13 | Toshiba Corp | Control device for condensate pump |
| JP3291007B2 (en) * | 1991-08-13 | 2002-06-10 | 株式会社荏原製作所 | Variable speed water supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN203081721U (en) * | 2013-01-10 | 2013-07-24 | 爱环吴世(苏州)环保有限公司 | Water pump energy-saving system |
| CN204851614U (en) * | 2015-07-28 | 2015-12-09 | 山东圣凯节能投资有限公司 | Energy -efficient water pump economizer |
| CN204984822U (en) * | 2015-08-22 | 2016-01-20 | 杨文德 | High pressure water pump control box |
| CN105490462A (en) * | 2015-12-23 | 2016-04-13 | 卧龙电气集团股份有限公司 | Intelligently controlled integrated variable frequency motor system |
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|---|---|
| CN105864014A (en) | 2016-08-17 |
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Denomination of invention: Water pump control method, device and system Effective date of registration: 20220616 Granted publication date: 20171013 Pledgee: Industrial and Commercial Bank of China Limited Raoping sub branch Pledgor: GUANGDONG BOYU GROUP Co.,Ltd. Registration number: Y2022980008023 |