CN206092452U - Automatic energy -conserving centrifugal water pump of speed governing - Google Patents
Automatic energy -conserving centrifugal water pump of speed governing Download PDFInfo
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- CN206092452U CN206092452U CN201621100884.9U CN201621100884U CN206092452U CN 206092452 U CN206092452 U CN 206092452U CN 201621100884 U CN201621100884 U CN 201621100884U CN 206092452 U CN206092452 U CN 206092452U
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Abstract
The utility model provides an automatic energy -conserving centrifugal water pump of speed governing utilizes brushless DC motor's rotational speed and the characteristics that voltage was directly proportional, locates sensor installation (3) at pump body delivery port, and sensor (3) electric connection to motor control system (18), it is back that the user sets for good regulation operating panel (19), the duty cycle of PWM signal is controlled to the signal that gathered according to sensor (3) motor control system (18) to can adjust the rotational speed of brushless DC motor (1) along with medium temperature or pipe -line system hinder the average voltage that the several coil winding of stator (15) was controlled to the force variation, reduce the energy consumption.
Description
Technical field
This utility model is related to pump technology field, more particularly to a kind of automatic speed regulation energy-saving centrifugal water pump.
Background technology
Water pump (Pump) be it is a kind of be convection cell acting machinery, for increasing the pressure of liquid, make liquid transport flow.
In commercial production and daily life, water pump is used for conveying the liquid of clear water and other physics, chemical property similar to water, its
Using relatively broad, such as public waterworks, Air-conditioning Cycle Hydraulic Projects, boiler water supply, pressurized water supply, spraying system of fire fighting, irrigation,
The fields such as power station, industrial water supply system, shipping industry and petroleum refining industry.
Water pump is divided into multiclass according to operation principle, wherein just including centrifugal water pump.Before centrifugal water pump starts, first by pump chamber and
Water inlet pipe fills water, and after operating, in the presence of the centrifugal force for rotating at a high speed in impeller and producing, the water in impeller channel is thrown toward
Surrounding, impeller eye forms vacuum, and extraneous water is inhaled into along water inlet pipe supplements this space at atmosheric pressure, inhales then
The water for entering is thrown away by impeller and enters outlet pipe again, therefore centrifugal water pump rotates at a high speed the effect of produced centrifugal force in impeller
Under, can continuously absorb water, press water, complete the conveying to water.
According to JBT9804-2014 technical standards, centrifugal pump of the input power less than (containing) 3KW is little Minitype centrifugal water pump.
The structure of traditional little Minitype centrifugal water pump including AC induction motor 100 and by AC induction motor 100 as shown in figure 1, drive
The dynamic pump housing 200.The AC induction motor 100 includes shell 110, the main shaft 120 in shell 110, supports main shaft 120
Bearing 130, the rotor 140 that is set on main shaft 120 and be surrounded on the periphery of rotor 140 and be fixed on the inner peripheral surface of shell 110
On stator 150；The pump housing 200 is including pump case 210, in the interior impeller being set on the end of the main shaft 120 of pump case 210
The mechanical sealing member 230 in gap between 220 and sealing main shaft 120 and impeller 220.
The course of work of little Minitype centrifugal water pump is shown in Fig. 1：The copper cash of stator 150 produces magnetic field, rotor 140 after being powered
Rotate under the influence of a magnetic field, drive main shaft 120 to rotate, and then rotated by the impeller 220 of main shaft 120, by Jie in pump chamber
Matter is continuously sent.
The little Minitype centrifugal water pump can be used for the places such as HVAC, refrigeration, and water pump to tubing provides flow, when being
When the resistance of system is constant, the flow of water pump, lift are constant, and the output of motor is constant, and energy consumption immobilizes；When the temperature of medium
When degree changes, the output of motor is constant, and energy consumption is constant.Therefore, the little Minitype centrifugal water pump can not be with tubing
Resistance, the change of medium temperature carry out speed governing, and the waste of energy consumption is caused to a certain extent.For example make for northern winter heating
Hot-water circulating pump, the hot water deposited in boiler is sent in the pipeline in each room, usual boiler and is deposited
The water temperature (such as 60 DEG C) of hot water be above water temperature (such as 40 DEG C) needed for tubing, in this case water pump due to
Speed governing is unable to, is worked in rated speed all the time, energy consumption is fixed, and will cause the waste of energy consumption.
Utility model content
The purpose of this utility model is to provide a kind of automatic speed regulation energy-saving centrifugal water pump, can with medium temperature or
The change of tubing resistance carries out speed governing, reducing energy consumption.
For achieving the above object, this utility model provides a kind of automatic speed regulation energy-saving centrifugal water pump, including brushless dc
Machine, the pump housing driven by brshless DC motor and the sensor installed in pump housing water outlet；
The brshless DC motor include shell, the main shaft located inside the shell, the rotor being set on main shaft, be surrounded on turn
Sub- periphery and the stator being fixed on shell inner peripheral surface, the photoelectric control components that are electrically connected with located inside the shell and with stator or suddenly
Your control element, located inside the shell and be electrically connected with photoelectric control components or Hall control element electric machine control system and
It is fixed on housing outward end face and is electrically connected with the regulation guidance panel of electric machine control system；The photoelectric control components or Hall
Rectifier bridge is configured in control element, is unidirectional current by AC conversion；The rotor itself contains the permanent magnetism material of high magnetic flux density
Material；The stator includes several coil windings, and the photoelectric control components or Hall control element control several coils of stator
Winding is connected unidirectional current to change the sense of current of coil windings by rule, forms rotating excitation field；
The pump housing includes pump case and the impeller being set in pump case on the main shaft end；
The sensor is electrically connected to electric machine control system；User is set after regulation guidance panel, the motor control
System processed according to sensor acquisition to signal controlling the dutycycle of pwm signal, so as to control several coil windings of stator
Average voltage, adjust brshless DC motor rotating speed.
Digital processing unit or single-chip microcomputer are set in the electric machine control system；The digital processing unit or single-chip microcomputer include
PWM generation modules and time base module；The time base module is posted including special 16 time base counters and a period of time radix word
Storage；The PWM generation modules include a programmable digital depositor and a comparator；
The time base counter to timer clock count, when radix word register according to adjust guidance panel setting insert
Determining cycle of pwm signal, time base counter is from the sensor acquisition signal and starts after counting, its meter for one preset number
Numerical value with when radix word register in the preset number inserted compare, when both are consistent, export the pwm signal of same period；Two
When person is inconsistent, when radix word register in numeral change, it is corresponding to change the counting cycle, so as to change pwm signal
Frequency；
The programmable digital register root inserts another preset number to determine that PWM believes according to the setting for adjusting guidance panel
Number dutycycle, time base counter from the sensor acquisition signal and start counting after, comparator by its count value with can compile
The preset number inserted in number of passes word register compares, and the waveform saltus step of pwm signal is produced, so as to change accounting for for pwm signal
Sky ratio so that the rotating speed of brshless DC motor is improved or reduced.
The regulation guidance panel is rounded, is provided with index scale, adjusting key, acknowledgement key, return key and water pump operation
Display lamp.
The sensor is temperature sensor or pressure transducer.
The brshless DC motor is also including the bearing of supports main shaft；The pump housing is also included between sealing main shaft and impeller
The mechanical sealing member in gap.
The permanent magnet material of the high magnetic flux density is neodymium, ferrum, the heap stack combination of boron.
The stator includes three coil windings, and three coil windings adopt Y-connection, constitute six grades of three-phase.
The automatic speed regulation energy-saving centrifugal water pump adopts horizontal installation, and the bearing of trend of the main shaft is parallel to horizontal plane.
The automatic speed regulation energy-saving centrifugal water pump adopts vertical installation, the main shaft to extend perpendicularly to horizontal plane；
The pump case is fixed on flange.
The beneficial effects of the utility model：A kind of automatic speed regulation energy-saving centrifugal water pump that this utility model is provided, using nothing
The characteristics of rotating speed of brushless motor is directly proportional to voltage, in pump housing water outlet install sensor, sensor is electrically connected to
Electric machine control system, user is set after regulation guidance panel, the signal that the electric machine control system is arrived according to sensor acquisition
To control the dutycycle of pwm signal such that it is able to as the change of medium temperature or tubing resistance controls the several of stator
The average voltage of coil windings, adjusts the rotating speed of brshless DC motor, reducing energy consumption.
Description of the drawings
In order to be able to be further understood that feature of the present utility model and technology contents, refer to new below in connection with this practicality
The detailed description of type and accompanying drawing, but accompanying drawing only provides with reference to and illustrates to use, not for being any limitation as to this utility model.
In accompanying drawing,
Fig. 1 is the half-sectional structural representation of traditional little Minitype centrifugal water pump；
Fig. 2 is the half-sectional structural representation of horizontal automatic speed regulation energy-saving centrifugal water pump in this utility model；
Fig. 3 is the half-sectional structural representation of vertical automatic speed regulation energy-saving centrifugal water pump in this utility model；
Fig. 4 is the front view of the regulation guidance panel of automatic speed regulation energy-saving centrifugal water pump of the present utility model.
Specific embodiment
Further to illustrate technological means and its effect that this utility model taken, below in conjunction with of the present utility model
Preferred embodiment and its accompanying drawing are described in detail.
Please refer to Fig. 2 and Fig. 4, or Fig. 3 and Fig. 4, this utility model provides a kind of automatic speed regulation energy-saving centrifugal water pump,
Automatic speed regulation energy-saving centrifugal water pump wherein shown in Fig. 2 adopts horizontal installation, the automatic speed regulation energy-saving centrifugal water pump shown in Fig. 3 to adopt
Use vertical installation.
As shown in Fig. 2 or Fig. 3, no matter using horizontal installation or vertical installation, automatic speed regulation energy-conservation of the present utility model
Centrifugal water pump includes brshless DC motor 1, the pump housing 2 by the driving of brshless DC motor 1 and installed in the water outlet of the pump housing 2
Sensor 3.
Wherein, the sensor 3 is temperature sensor or pressure transducer, for sensing, gathering the water outlet of the pump housing 2
Temperature or pressure.
The brshless DC motor 1 include shell 11, the main shaft 12 in shell 11, the bearing 13 of supports main shaft 12,
The rotor 14 that is set on main shaft 12, be surrounded on the periphery of rotor 14 and be fixed on the inner peripheral surface of shell 11 stator 15, located at outer
The photoelectric control components being electrically connected with shell 11 and with stator 15 or Hall control element 17, in shell 11 and it is electrically connected with
The electric machine control system 18 of photoelectric control components or Hall control element 17 and it is fixed on the outer face of shell 11 and electrically connects
Connect the regulation guidance panel 19 of electric machine control system 18.The stator 17 includes several coil windings.
The sensor 3 is electrically connected to electric machine control system 18.
The pump housing 2 includes pump case 21, leads in the interior impeller 22 being set on the end of the main shaft 12 of pump case 21 and sealing
The mechanical sealing member 23 in gap between axle 12 and impeller 22.
Put down for the bearing of trend of horizontally-mounted automatic speed regulation energy-saving centrifugal water pump, the main shaft 12 is adopted shown in Fig. 2
Row is in horizontal plane；For the automatic speed regulation energy-saving centrifugal water pump shown in Fig. 3 using vertical installation, the bearing of trend of the main shaft 12
Perpendicular to horizontal plane, and the pump case 21 is fixed on flange 25.
This utility model is based on the rotating speed of brshless DC motor and is proportional to voltage, changes the amplitude of stator winding voltage
Motor speed this feature can be changed, using pulse width modulation (Pulse Width Modulation, PWM) control technology
To adjust, controlled motor rotating speed：User is set after regulation guidance panel 19, and the electric machine control system 18 is according to sensor 3
The signal for collecting so as to control the average voltage of several coil windings of stator 15, is adjusted controlling the dutycycle of pwm signal
The rotating speed of brshless DC motor 1.
Specifically, in the electric machine control system 18 arrange digital processing unit (Digital Signal Processor,
) or single-chip microcomputer DSP；The digital processing unit or single-chip microcomputer include PWM generation modules and time base module；The time base module bag
Include special 16 time base counters and a period of time radix word register；The PWM generation modules are posted including a programmable digital
Storage and a comparator.
The regulation guidance panel 19 is rounded, is provided with index scale, adjusting key, acknowledgement key, return key and water pump fortune
Row display lamp.
The PWM generation modules produce the waveform of pwm signal.Pre-set different rotating speeds distinguish corresponding pwm signal
Dutycycle, example is done as temperature sensor with the sensor 3, for water temperature at 40 DEG C, the rotating speed of brshless DC motor 1 is
The dutycycle of 3000 revs/min of specific pwm signals of correspondence one, the rotating speed of brshless DC motor 1 is 2500 revs/min then corresponding another
The dutycycle of specific pwm signal.
The time base counter to timer clock count, when radix word register according to adjust guidance panel 19 setting put
Enter a preset number to determine the cycle of pwm signal, time base counter is from the sensor acquisition signal and starts after counting, its
Count value with when radix word register in the preset number inserted compare, when both are consistent, export the pwm signal of same period；
When both are inconsistent, when radix word register in numeral change, it is corresponding to change the counting cycle, so as to change pwm signal
Frequency.
The programmable digital register root inserts another preset number to determine PWM according to the setting for adjusting guidance panel 19
The dutycycle of signal, time base counter from the sensor acquisition signal and start counting after, comparator by its count value with can
The preset number inserted in program numbers depositor compares, and the waveform saltus step of pwm signal is produced, so as to change pwm signal
Dutycycle so that the rotating speed of brshless DC motor 1 is improved or reduced.
Still example is done as temperature sensor with the sensor 3, then the index scale on the regulation guidance panel 19
Be worth for temperature value, as shown in figure 4, give on the regulation guidance panel 19 35 DEG C, 40 DEG C, 45 DEG C, 50 DEG C, 55 DEG C, 60 DEG C,
65 DEG C of this 7 scale values, user can be selected according to actual needs.Assume each corresponding brushless direct-current of design temperature numerical value
The rotating speed of motor 1 is 3000 revs/min, so that it is determined that the flow of water pump, lift operating point during each temperature value.User sets water
, when a certain temperature value (such as 40 DEG C) works, the programmable digital depositor is i.e. according to the setting for adjusting guidance panel 19 for pump
Insert preset number to determine the dutycycle of pwm signal, time base counter is from temperature sensor collecting temperature signal and starts meter
After number, comparator compares the preset number that its count value is inserted in programmable digital depositor, if temperature changes
(being higher or lower than 40 DEG C), then produce the waveform saltus step of pwm signal, so as to change the dutycycle of pwm signal so that brushless direct-current
The rotating speed of motor 1 is improved or reduced, and pump capacity increases or reduces, it is ensured that water temperature is at 40 DEG C or so.
In the same manner, when the sensor 3 is pressure transducer, the index scale value on the regulation guidance panel 19 is pressure
Force value, sensor acquisition pressure signal produces the waveform saltus step of pwm signal, so as to change pwm signal if pressure changes
Dutycycle so that the rotating speed of brshless DC motor 1 is improved or reduced.
Automatic speed regulation energy-saving centrifugal water pump of the present utility model is suitable as the hot water circuit water that northern winter heating is used
Pump, sends the hot water deposited in boiler into the pipeline in each room.If user sets 40 DEG C of water temperatures for needed for it, then
When tubing water temperature is higher than 40 DEG C, the rotating speed of brshless DC motor 1 declines, and output declines, and input power declines, electricity
Function depletion is few, has reached the purpose of energy-conservation；When system water temperature is less than 40 DEG C, the rotating speed of brshless DC motor 1 is improved, so that
Tubing reaches the temperature of 40 DEG C of setting.Generally, the water temperature (such as 60 DEG C) of the hot water deposited in boiler is above
Water temperature (such as 40 DEG C) needed for tubing, in this case the water pump most of the time is in the state of less than rated speed
Work, energy consumption reduces obvious.
It also should be noted that：The photoelectric control components or Hall control element 17 control several lines of stator 15
Circle winding is connected unidirectional current to change the sense of current of coil windings by rule, rotating excitation field is formed, because rotor 14 contains itself
There is the permanent magnet material of high magnetic flux density, be a pair of magnetic poles, rotor field produces pulling force and makes with the rotating excitation field interaction of stator
Obtain rotor 14 to rotate, rotor 14 drives main shaft 12 to rotate, and the impeller 22 coaxial with rotor 14 is driven in rotation, pump working,
Water in pump chamber is continuously sent.
Specifically, the permanent magnet material of the high magnetic flux density is preferably neodymium (Nd), ferrum (Fe), the heap stack combination of boron (B), when
So, it is also possible to from other suitable materials with high magnetic flux density.
The stator 15 preferably includes three coil windings, is similar to that the stator of AC three-phase motor, described three
Coil windings adopt Y-connection, constitute six grades of three-phase.The Hall control element 17 controls three coil windings by rule
Rule connects unidirectional current to change the sense of current of coil windings, forms rotating excitation field.The sense of current is changed and be once referred to as a step,
Often walk in three coil windings, a winding inflow current, a winding flows out electric current, and a remaining winding is not turned on, and
Often change a step only one coil windings by commutation.For the stator 17 including three coil windings, its rotation for being formed
Magnetic field often walks 60 degree of rotation, rotates a circle per 6 steps.
Compared to prior art, automatic speed regulation energy-saving centrifugal water pump configuration brshless DC motor of the present utility model can be carried
The high whole efficiency of pump, also plays energy-conserving action.
In sum, automatic speed regulation energy-saving centrifugal water pump of the present utility model, using rotating speed and the electricity of brshless DC motor
The characteristics of being pressed into direct ratio, in pump housing water outlet install sensor, sensor is electrically connected to electric machine control system, user's setting
Adjust well after guidance panel, the electric machine control system according to sensor acquisition to signal controlling the dutycycle of pwm signal,
So as to the average voltage of medium temperature or several coil windings of the change control stator of tubing resistance, adjust
The rotating speed of section brshless DC motor, reducing energy consumption.
The above, for the person of ordinary skill of the art, can according to the technical solution of the utility model and
Technology design makes other various corresponding changes and deformation, and all these changes and deformation should all belong to this utility model power
The protection domain that profit is required.
Claims (9)
1. a kind of automatic speed regulation energy-saving centrifugal water pump, it is characterised in that including brshless DC motor (1), by brshless DC motor
(1) pump housing (2) for driving and the sensor (3) installed in the pump housing (2) water outlet；
The brshless DC motor (1) including shell (11), the main shaft (12) in shell (11), be set on main shaft (12)
Rotor (14), be surrounded on rotor (14) periphery and be fixed on shell (11) inner peripheral surface stator (15), located at shell (11)
Photoelectric control components that are interior and being electrically connected with stator (15) or Hall control element (17), connect in the shell (11) and electrically
Connect the electric machine control system (18) of photoelectric control components or Hall control element (17) and be fixed on shell (11) outer face
And it is electrically connected with the regulation guidance panel (19) of electric machine control system (18)；The photoelectric control components or Hall control element
(17) configuration rectifier bridge in, is unidirectional current by AC conversion；The rotor (15) itself contains the permanent magnetism material of high magnetic flux density
Material；The stator (17) includes several coil windings, the photoelectric control components or Hall control element (17) control stator
(15) several coil windings are connected unidirectional current to change the sense of current of coil windings by rule, form rotating excitation field；
The pump housing (2) is set in the impeller (22) on the main shaft (12) end including pump case (21) and in pump case (21)；
The sensor (3) is electrically connected to electric machine control system (18)；User is set after regulation guidance panel (19), described
The signal that electric machine control system (18) is collected according to sensor (3) controlling the dutycycle of pwm signal, so as to control stator
(15) average voltage of several coil windings, adjusts the rotating speed of brshless DC motor (1).
2. automatic speed regulation energy-saving centrifugal water pump as claimed in claim 1, it is characterised in that in the electric machine control system (18)
Digital processing unit or single-chip microcomputer are set；The digital processing unit or single-chip microcomputer include PWM generation modules and time base module；It is described
Time base module includes special 16 time base counters and a period of time radix word register；The PWM generation modules can including one
Program numbers depositor and a comparator；
The time base counter to timer clock count, when radix word register according to adjust guidance panel (19) setting insert
Determining cycle of pwm signal, time base counter is from the sensor acquisition signal and starts after counting, its meter for one preset number
Numerical value with when radix word register in the preset number inserted compare, when both are consistent, export the pwm signal of same period；Two
When person is inconsistent, when radix word register in numeral change, it is corresponding to change the counting cycle, so as to change pwm signal
Frequency；
The programmable digital register root inserts another preset number to determine that PWM believes according to the setting for adjusting guidance panel (19)
Number dutycycle, time base counter from the sensor acquisition signal and start counting after, comparator by its count value with can compile
The preset number inserted in number of passes word register compares, and the waveform saltus step of pwm signal is produced, so as to change accounting for for pwm signal
Sky ratio so that the rotating speed of brshless DC motor (1) is improved or reduced.
3. automatic speed regulation energy-saving centrifugal water pump as claimed in claim 2, it is characterised in that the regulation guidance panel (19) is in
Circle, is provided with index scale, adjusting key, acknowledgement key, return key and water pump operation display lamp.
4. automatic speed regulation energy-saving centrifugal water pump as claimed in claim 2, it is characterised in that the sensor (3) is that temperature is passed
Sensor or pressure transducer.
5. automatic speed regulation energy-saving centrifugal water pump as claimed in claim 1, it is characterised in that the brshless DC motor (1) is also
Including the bearing (13) of supports main shaft (12)；The pump housing (2) also includes gap between sealing main shaft (12) and impeller (22)
Mechanical sealing member (23).
6. automatic speed regulation energy-saving centrifugal water pump as claimed in claim 1, it is characterised in that the permanent magnetism material of the high magnetic flux density
Expect for neodymium, ferrum, boron heap stack combination.
7. automatic speed regulation energy-saving centrifugal water pump as claimed in claim 1, it is characterised in that the stator (17) is including three lines
Circle winding, three coil windings adopt Y-connection, constitute six grades of three-phase.
8. the automatic speed regulation energy-saving centrifugal water pump as described in any one of claim 1 to 6, it is characterised in that using horizontal installation,
The bearing of trend of the main shaft (12) is parallel to horizontal plane.
9. the automatic speed regulation energy-saving centrifugal water pump as described in any one of claim 1 to 6, it is characterised in that using vertical installation,
The main shaft (12) extends perpendicularly to horizontal plane；The pump case (21) is fixed on flange (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621100884.9U CN206092452U (en) | 2016-09-30 | 2016-09-30 | Automatic energy -conserving centrifugal water pump of speed governing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621100884.9U CN206092452U (en) | 2016-09-30 | 2016-09-30 | Automatic energy -conserving centrifugal water pump of speed governing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206092452U true CN206092452U (en) | 2017-04-12 |
Family
ID=58482629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621100884.9U Active CN206092452U (en) | 2016-09-30 | 2016-09-30 | Automatic energy -conserving centrifugal water pump of speed governing |
Country Status (1)
| Country | Link |
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| CN (1) | CN206092452U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224258A (en) * | 2016-09-30 | 2016-12-14 | 克奥兹泵业（深圳）有限公司 | Automatic speed regulation energy-saving centrifugal water pump |
-
2016
- 2016-09-30 CN CN201621100884.9U patent/CN206092452U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224258A (en) * | 2016-09-30 | 2016-12-14 | 克奥兹泵业（深圳）有限公司 | Automatic speed regulation energy-saving centrifugal water pump |
| CN106224258B (en) * | 2016-09-30 | 2018-05-25 | 克奥兹泵业（深圳）有限公司 | Automatic speed regulation energy-saving centrifugal water pump |
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