CN108757504A - A kind of water pump control method - Google Patents
A kind of water pump control method Download PDFInfo
- Publication number
- CN108757504A CN108757504A CN201810508632.7A CN201810508632A CN108757504A CN 108757504 A CN108757504 A CN 108757504A CN 201810508632 A CN201810508632 A CN 201810508632A CN 108757504 A CN108757504 A CN 108757504A
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- Prior art keywords
- water pump
- experimental starting
- pump body
- starting
- controller
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
It includes step S1 that the present invention, which discloses a kind of water pump control method, when starting mode of pump, is started with attempting normally to rotate forward by setup parameter, controller judges water pump body operating condition；S2, when the water pump normally can not rotate forward startup by the setup parameter, the controller controls the water pump body and enters experimental starting pattern；The experimental starting pattern includes increasing the number of starts, increasing water pump torque, the reversion of water pump axis body；Controller of the present invention is according to the operating status of the water pump body, the water pump stuck probability of the water pump body internal incrustation caused by water quality inferiority is reduced by increasing the number of starts, increasing the control modes such as water pump torque, the reversion of water pump axis body, extends the service life of the water pump.
Description
Technical field
The present invention relates to pump technical fields, and in particular to a kind of water pump control method.
Background technology
Currently, air energy heat pump generally uses canned motor pump, but due to actually using to ensure low noise, low-power consumption
In the process if water quality is harder, Ca2+, Mg2+ ion is exceeded to easily lead to that pump body gets rusty or the crystallization of pump housing salinity leads to water pump
The pump housing is stuck, to influence the use of unit.
Water pump is stuck in order to prevent, and related technical personnel propose new material with processing technology to prevent water pump stuck,
It is this to be improved by material or processing technology to be the advantages of preventing water pump stuck method：Sealing effect is good, prevents salinity knot
Brilliant stuck water pump, delayed the crystallization of salinity on water flow passage face, and extended the service life of water pump.
However, the prior art is when solving the problems, such as that water pump is anti-jamming, due to substantially by using new material or increasing
Add the methods of processing technology to solve, therefore, these methods increase cost and the processing of water heater product in which can not avoid
Complexity.
Invention content
In view of this, the present invention is directed to propose a kind of water pump control method, is produced with solving existing water pump for anti-jamming increase
The problem of product cost and processing complexity.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of water pump control method, including step：
S1 is started by setup parameter with attempting normally to rotate forward, controller judges that water pump body runs feelings when starting mode of pump
Condition；
S2, when the water pump normally can not rotate forward startup by the setup parameter, the controller controls the water pump
Ontology enters experimental starting pattern；
The experimental starting pattern includes increasing the number of starts, increasing water pump torque, the reversion of water pump axis body.
Preferably, in the experimental starting pattern, the driving moment by successively increasing the water pump body carries out several
Secondary reinforcing experimental starting, to be stepped up shaft rotation power；In the adjacent reinforcing experimental starting, the previous reinforcing experimental starting is starting
The water pump body is in stuck state after time, then the driving force of the water pump body is improved when the rear reinforcing experimental starting
Square.
Preferably, testing time is arranged in the reinforcing experimental starting；The number of the reinforcing experimental starting is in the testing time
It is interior, and when the water pump body normal rotation, the water pump normally rotates forward rotation by the setup parameter；The reinforcing experimental starting
Number be more than the testing time, the water pump body is adjusted step still in stuck state, the controller.
Preferably, the water pump body is set as velocity fluctuation pump, the set-up procedure is that the controller stops increasing institute
Driving moment is stated, and controls the water pump body and carries out reversion experimental starting.
It is inverted several times preferably, the reversion experimental starting is the controller control water pump body, it is described
The duration of reversion experimental starting is set as 2S；It is divided into 10S, the reversion experimental starting between the adjacent reversion experimental starting
Number be set as 3 times.
Preferably, the water pump body is set as constant speed water pump, the set-up procedure is controller reporting water pump event
Barrier.
Preferably, starting the time described in the reinforcing experimental starting is set as 2S；Between the adjacent reinforcing experimental starting
It is set to 10S, the testing time of the reinforcing experimental starting is set as 3 times.
Preferably, pressure sensor is arranged in the water pump, the pressure sensor is connect with the controller, the control
Pressure threshold is arranged in device, and the pressure sensor detects the driving moment corresponding pressure value of the water pump body, works as detection
To the pressure value reach the pressure threshold when, the controller stops increasing the driving moment, and in the reinforcing
The water pump body is controlled in experimental starting, and experimental starting is carried out with nominal drive torque.
Preferably, the controller includes the master control borad being connected with the water pump body and is connected with the master control borad
Timer；The timer is used for timing, and the water pump is timed startup during inoperative by the experimental starting pattern.
Preferably, when the master control borad judges that current time h reaches opening for setting according to the timing result of the timer
After dynamic time H, starts the water pump, and after by the experimental starting pattern, the water is kept in the operation duration T of setting
The normal rotating forward operation of pump；When the controller judges that the run time of the water pump is super according to the timing result of the timer
After crossing operation duration T, it is out of service to control the water pump.
Preferably, the startup time H is set as starting time point, the current time h reaches the startup time point H
Afterwards, the master control borad starts the water pump body with the experimental starting pattern, and normally rotates forward startup in the water pump body
After time reaches the operation duration T, the water pump body is turned off.
Preferably, the startup time H is set as starting the period, at least one can be set in the startup period H
A operation duration T, and the interval N is equipped between the adjacent operation duration T；Judge in the master control borad
The current time h then starts the water pump body in the startup period H with the experimental starting pattern, is normally rotating forward
After run time reaches the operation duration T, the water pump body is closed；Until the current time h is not in the startup
Between in section H
Compared with the existing technology, the structure of temperature probe holder of the present invention has the advantage that：
The controller by the increase number of starts, increases water pump torque, water according to the operating status of the water pump body
The control modes such as pump shaft body reversion reduce stuck several of water pump water pump body internal incrustation caused by water quality inferiority
Rate extends the service life of the water pump.
Description of the drawings
Fig. 1 is the structure chart of the water pump；
Fig. 2 is the water pump control method flow chart of adjustable speed water pump；
Fig. 3 is the water pump control method flow chart of constant speed water pump.
Digital representation in figure：
1- controllers；2- water pump bodies；3- pressure sensors；11- master control borads；12- timers.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In addition, the directionality instruction being previously mentioned in an embodiment of the present invention, then directionality instruction is only used for explaining
Relative position relation, motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if the particular pose
When changing, then directionality instruction also correspondingly changes correspondingly.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment one
Water pump of the present invention includes controller 1 and water pump body 2.
Specifically, the water pump body 2 is connected with the controller 1, and by the control of the controller 1, the water pump
Ontology 2 can attempt that the water pump body 2 is allowed to start on startup by way of setting, and the setting means such as increases water pump
The number of starts, increasing water pump torque, the reversion of water pump axis body etc., reduce water pump water pump body caused by water quality inferiority
The stuck probability of 2 internal incrustations, extends the service life of the water pump.
The water pump body 2 may be configured as velocity fluctuation pump or constant speed water pump.
Specifically, water pump control method of the present invention includes step：
S1 is started by setup parameter with attempting normally to rotate forward, the controller 1 judges described when the starting mode of pump
2 operating condition of water pump body；
S2, when the water pump normally can not rotate forward startup by the setup parameter, the controller 1 controls the water pump
Ontology 2 enters experimental starting pattern.
Specifically the experimental starting mode process is：
When the water pump body 2 is set as adjustable speed water pump or velocity fluctuation pump, by successively increasing the water pump body 2
Driving moment reinforced experimental starting several times, to be stepped up the Relative Movement Force between incrustation scale and axis, i.e., the described water pump
The shaft rotation power of ontology 2；When the Relative Movement Force is more than the frictional force of the incrustation scale and axis, the water pump body 2 can be just
Often rotation；When the Relative Movement Force is less than the frictional force of the incrustation scale and axis, the water pump body 2 is in stuck state.
The reinforcing experimental starting and water pump body 2 is still in stuck state after being kept for a period of time, then next time
The driving moment that the water pump body 2 is further increased when the reinforcing experimental starting, to attempt that the Relative Movement Force is made to be more than
The frictional force of the incrustation scale and axis realizes the normal rotation of the water pump body 2.The driving is kept in the reinforcing experimental starting
The time of torque is traditionally arranged to be 2S；10S is divided between the adjacent reinforcing experimental starting described twice, the reinforcing experimental starting
Testing time is traditionally arranged to be 3 times.
If in the testing time of the reinforcing experimental starting, 2 normal rotation of the water pump body, then the water pump is by described
Setup parameter normally rotates forward rotation.
If the testing time of the reinforcing experimental starting is more than 3 times, the water pump body 2 is still in stuck state, then described
Controller 1 stops increasing the driving moment, and controls the water pump body and carry out reversion experimental starting.The reversion experimental starting tool
Body is that the control water pump body is inverted several times, so as to reverse power be generated in the water pump body 2, to attempt to overcome
Frictional force between the incrustation scale and axis.
Since the water pump is when in use generally to rotate forward state rotation, when using reversion rotation, water described in destructible
Connection structure between the dirty and described axis, the water pump body 2 caused by avoiding the incrustation scale are stuck.
The duration of the reversion experimental starting is traditionally arranged to be 2S；Interval between the adjacent reversion experimental starting described twice
Testing time for 10S, the reversion experimental starting is traditionally arranged to be 3 times.
If it is described reversion experimental starting testing time in, the water pump body 2 normally reversion rotation, then the water pump with
Inverted status runs stop reverse after a period of time, and normally rotates forward rotation by the setup parameter；The fortune of the inverted status
The row time is traditionally arranged to be 5S.
If the testing time of the reversion experimental starting is more than 3 times, the water pump body 2 is still in stuck state, then described
Controller 1 reports the fault of water pump to user.
When the water pump body 2 is set as constant speed water pump, by successively increase the driving moment of the water pump body 2 into
Row reinforces experimental starting several times, to be stepped up the Relative Movement Force between incrustation scale and axis；When the Relative Movement Force is more than institute
When stating the frictional force of incrustation scale and axis, the water pump body 2 can normal rotation；When the Relative Movement Force is less than the incrustation scale and axis
Frictional force when, the water pump body 2 is in stuck state.
The reinforcing experimental starting and water pump body 2 is still in stuck state after being kept for a period of time, then next time
The driving moment that the water pump body 2 is further increased when the reinforcing experimental starting, to attempt that the Relative Movement Force is made to be more than
The frictional force of the incrustation scale and axis realizes the normal rotation of the water pump body 2.The driving is kept in the reinforcing experimental starting
The time of torque is traditionally arranged to be 2S；10S is divided between the adjacent reinforcing experimental starting described twice, the reinforcing experimental starting
Testing time is traditionally arranged to be 3 times.
If in the testing time of the reinforcing experimental starting, 2 normal rotation of the water pump body, then the water pump is by described
Setup parameter normally rotates forward rotation.
If the testing time of the reinforcing experimental starting is more than 3 times, the water pump body 2 is still in stuck state, then described
Controller 1 reports the fault of water pump to user.
Preferably, pressure sensor 3 is arranged in the water pump, the pressure sensor 3 obtains the water pump sheet for detecting
The driving moment of body 2, to ensure under the experimental starting pattern, 2 ever-increasing driving moment of the water pump body is reasonable
Within the scope of.
The pressure sensor 3 is connect with the controller 1, and pressure threshold, the pressure sensing is arranged in the controller 1
Device 3 detects the driving moment corresponding pressure value of the water pump body 2, when the pressure value detected reaches the pressure
When threshold value, the controller 1 stops increasing the driving moment, and controls the water pump body 2 and attempted with nominal drive torque
Start.The nominal drive torque setting is the corresponding water pump driving moment of the pressure threshold, the generally described water pump
Permitted maximum drive torque under normal operating conditions.
Specifically, when the water pump has just enter into the experimental starting pattern, the pressure sensor 3 detects the water pump
It has been under the nominal drive torque state, then the controller 1 described in the reinforcing experimental starting is with the nominal drive
Torque experimental starting.
It keeps the time of the driving moment to start the time in the reinforcing experimental starting and is traditionally arranged to be 2S；It is adjacent twice
10S is divided between the reinforcing experimental starting, the testing time of the reinforcing experimental starting is traditionally arranged to be 3 times.
If in the testing time of the reinforcing experimental starting, 2 normal rotation of the water pump body, then the water pump is by described
Setup parameter normally rotates forward rotation.
If the testing time of the reinforcing experimental starting is more than 3 times, the water pump body 2 is still in stuck state, then described
Controller 1 stops increasing the driving moment and controlling the water pump body carrying out reversion experimental starting or to described in user's report
Fault of water pump.
Embodiment two
Preferably, the controller 1 include the master control borad 11 being connected with the water pump body 2 and with the master control borad 11
Connected timer 12.By the water pump during inoperative start by set date, in start by set date the water pump by it is described examination open
Dynamic model formula is timed startup.
By water pump described in the start by set date during inoperative, it can effectively avoid the water pump because of the water pump body 2
Get rusty, crystallize, fouling the case where occur, the long-time accumulation of iron rust under off working state, crystalline solid, dirt is avoided, to anti-
Only the water pump is stuck, extends the service life of the water pump.
The timer 12 is used for timing, when the master control borad 11 judges currently according to the timing result of the timer 12
After time h reaches the startup time H of setting, start the water pump, and after by the experimental starting pattern, in the operation of setting
The normal rotating forward operation of the water pump is kept in duration T；When the controller 1 judges according to the timing result of the timer 12
After the run time of the water pump has been more than operation duration T, it is out of service to control the water pump.
The water pump of the embodiment of the present invention as a result, controls the water pump sheet during inoperative by the controller 1
2 timing of body is started with the experimental starting pattern, can effectively be destroyed iron rust, crystalline solid, dirt etc. and be caused the water pump body 2 stuck
Institutional framework ensure that the job stability of the water pump to prevent the water pump body 2 stuck and extend described
The service life of water pump.
Embodiment three
The startup time H is set as starting time point, described after the current time h reaches the startup time point H
Master control borad 11 starts the water pump body 2 with the experimental starting pattern, and the time started is normally rotated forward in the water pump body 2
After reaching the operation duration T, the water pump body 2 is turned off.Preferably, the operation duration T is set as 1-2 minutes.
Specifically, when with one cycle period in day, several startup time point H are set in 24 hours, such as often
A startup time point H is arranged in a 6 hours.The mode of this start by set date water pump is more suitable for for a long time using the water pump
Situation.
By being uniformly arranged multiple startup time point H in one day, or according to described in the setting of the frequency of use of the water pump
Start time point H, an operation duration T is run with water pump body described in start by set date 2 and every time with normal rotation, it can
Achieve the effect that preferable pre- waterproof pump is stuck.
On the startup time point H, the operating condition of the water pump can be detected by the experimental starting pattern,
Detect whether the water pump body 2 is stuck, is convenient for grasp of the user to the water pump actual conditions, improving the water pump makes
Safety.
Example IV
The startup time H is set as starting the period, and at least one fortune can be set in the startup period H
Row duration T, and the interval N is equipped between the adjacent operation duration T.
Judge the current time h in the startup period H then with the experimental starting pattern in the master control borad 11
Start the water pump body 2, after normally rotating forward run time and reaching the operation duration T, closes the water pump body 2；?
The counter timing cycle time reaches the interval N and the current time h is still within the startup period H
When interior, then the water pump body 2 is started with the experimental starting pattern again, when normally rotating forward run time reaches the operation
Long T, until the current time h is not in the startup period H.
The mode of the present embodiment start by set date water pump is more suitable for the case where using the water pump once in a while, and such as water pump is white
It needs normal use, then set start period H be at night 11 points to 6 points of the next morning, it is interior during this period to open at least once
The dynamic water pump body 2, avoid the water pump under night off working state when, the long-time accumulation of iron rust, crystalline solid, dirt
To cause the stuck of the water pump body 2.
The water pump according to the ... of the embodiment of the present invention as a result, passes through the multiple short time startup in the startup period H
The water pump body 2 can achieve the effect that the best prevention water pump is stuck, when in addition will not be long because of the water pump
Between start and keep the water pump body 2 impaired or energy consumption waste.
The startup period H, the operation duration T and the interval N can need voluntarily to carry out according to user
It is adjustable；Preferably, the startup period H is set as 1-2 hours, the operation duration T is set as 1-2 minutes, the fortune
Between-line spacing N is set as 20-120 minutes.
In the startup period H, the operating condition of the water pump can be carried out by the experimental starting pattern several
Secondary detection detects whether the water pump body 2 is stuck, be convenient for grasp of the user to the water pump actual conditions, improves institute
State the safety that water pump uses.
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive
's.Those skilled in the art understand that in the spirit and scope defined by the claims in the present invention many changes can be carried out to it,
It changes or even equivalent, but falls in protection scope of the present invention.
Claims (12)
1. a kind of water pump control method, which is characterized in that including step：
S1 is started by setup parameter with attempting normally to rotate forward, controller (1) judges that water pump body (2) is run when starting mode of pump
Situation；
S2, when the water pump normally can not rotate forward startup by the setup parameter, the controller (1) controls the water pump sheet
Body (2) enters experimental starting pattern；
The experimental starting pattern includes increasing the number of starts, increasing water pump torque, the reversion of water pump axis body.
2. water pump control method as described in claim 1, which is characterized in that in the experimental starting pattern, by increasing successively
The driving moment of the water pump body (2) is added to be reinforced experimental starting several times, to be stepped up shaft rotation power；Add described in adjacent
In power experimental starting, the rear water pump body (2) is in stuck state between the previous reinforcing experimental starting on startup, then rear institute
State the driving moment that the water pump body (2) are improved when reinforcing experimental starting.
3. water pump control method as claimed in claim 2, which is characterized in that testing time is arranged in the reinforcing experimental starting；Institute
The number of reinforcing experimental starting is stated in the testing time, and when the water pump body (2) normal rotation, the water pump is by described
Setup parameter normally rotates forward rotation；The number of the reinforcing experimental starting is more than the testing time, and the water pump body (2) is still located
In stuck state, the controller (1) is adjusted step.
4. water pump control method as claimed in claim 3, which is characterized in that the water pump body (2) is set as velocity fluctuation pump,
The set-up procedure is that the controller (1) stops increasing the driving moment, and controls the water pump body and carry out reversion examination
Start.
5. water pump control method as claimed in claim 4, which is characterized in that the reversion experimental starting is the controller (1)
It controls the water pump body to be inverted several times, the duration of the reversion experimental starting is set as 2S；The adjacent reversion
10S is divided between experimental starting, the number of the reversion experimental starting is set as 3 times.
6. water pump control method as claimed in claim 3, which is characterized in that the water pump body (2) is set as constant speed water pump,
The set-up procedure is that the controller (1) reports fault of water pump.
7. water pump control method as claimed in claim 3, which is characterized in that the startup time described in the reinforcing experimental starting sets
It is set to 2S；It is set to 10S, the testing time setting of the reinforcing experimental starting between the adjacent reinforcing experimental starting
It is 3 times.
8. water pump control method as claimed in claim 2, which is characterized in that the water pump setting pressure sensor (3) is described
Pressure sensor (3) is connect with the controller (1), and pressure threshold, the pressure sensor (3) is arranged in the controller (1)
Detect the driving moment corresponding pressure value of the water pump body (2)；When the pressure value detected reaches the pressure
When threshold value, the controller (1) stops increasing the driving moment, and controls the water pump body in the reinforcing experimental starting
(2) experimental starting is carried out with nominal drive torque.
9. water pump control method as described in claim 1, which is characterized in that the controller (1) includes and the water pump sheet
The timer (12) body (2) connected master control borad (11) and be connected with the master control borad (11)；The timer (12) is used for
Timing, the water pump are timed startup during inoperative by the experimental starting pattern.
10. water pump control method as claimed in claim 9, which is characterized in that when the master control borad (11) is according to the timing
After the timing result of device (12) judges the startup time H that current time h reaches setting, start the water pump, and by described
After experimental starting pattern, the normal rotating forward of the water pump is kept to run in the operation duration T of setting；When the controller (1) root
After judging that the run time of the water pump is more than operation duration T according to the timing result of the timer (12), the water pump is controlled
It is out of service.
11. water pump control method as claimed in claim 10, which is characterized in that the startup time H is set as starting the time
Point, after the current time h reaches the startup time point H, the master control borad (11) is with described in experimental starting pattern startup
Water pump body (2), and after the water pump body (2) time that normally rotating forward starts reaches the operation duration T, turn off institute
State water pump body (2).
12. water pump control method as claimed in claim 10, which is characterized in that the startup time H is set as starting the time
Section, can set at least one operation duration T, and between the adjacent operation duration T in the startup period H
Equipped with the interval N；Judge the current time h in the startup period H then with institute in the master control borad (11)
It states experimental starting pattern and starts the water pump body (2), after normally rotating forward run time and reaching the operation duration T, close institute
State water pump body (2)；Until the current time h is not in the startup period H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508632.7A CN108757504A (en) | 2018-05-24 | 2018-05-24 | A kind of water pump control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508632.7A CN108757504A (en) | 2018-05-24 | 2018-05-24 | A kind of water pump control method |
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| CN108757504A true CN108757504A (en) | 2018-11-06 |
Family
ID=64005489
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| CN201810508632.7A Pending CN108757504A (en) | 2018-05-24 | 2018-05-24 | A kind of water pump control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109634200A (en) * | 2018-11-30 | 2019-04-16 | 邯郸市邯钢集团信达科技有限公司 | A kind of timing sequence control method counting realization multiple devices |
| CN110080998A (en) * | 2019-05-17 | 2019-08-02 | 苏州玲珑汽车科技有限公司 | Stall removing method, device and the storage medium of electronic water pump for automobile |
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| CN1829068A (en) * | 2005-02-25 | 2006-09-06 | 国际整流器公司 | Synchronous motor startup lock detection circuit and method |
| CN101351588A (en) * | 2005-11-04 | 2009-01-21 | 菲舍尔和佩克尔应用有限公司 | Washing machine pump control for water drainage, ventilation, dislodging blockage and recirculation |
| CN102102741A (en) * | 2009-12-22 | 2011-06-22 | 重庆科技学院 | Pump belt tensioning mechanism with torque detection function |
| CN103925702A (en) * | 2013-01-11 | 2014-07-16 | 广东美的暖通设备有限公司 | Heat pump water heater and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10267432A (en) * | 1997-03-24 | 1998-10-09 | Mitsubishi Heavy Ind Ltd | Actuation control device of air conditioner |
| JP2000064966A (en) * | 1998-08-19 | 2000-03-03 | Heishin Engineering & Equipment Co Ltd | Uniaxial eccentric screw pump |
| CN1829068A (en) * | 2005-02-25 | 2006-09-06 | 国际整流器公司 | Synchronous motor startup lock detection circuit and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109634200A (en) * | 2018-11-30 | 2019-04-16 | 邯郸市邯钢集团信达科技有限公司 | A kind of timing sequence control method counting realization multiple devices |
| CN110080998A (en) * | 2019-05-17 | 2019-08-02 | 苏州玲珑汽车科技有限公司 | Stall removing method, device and the storage medium of electronic water pump for automobile |
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Application publication date: 20181106 |