Utilizing a Piezo-Electric Bimorph to reach Frequently ...
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- Piezoelectric Pump series - Lk063a Liquid Pump BIMOR PUMP Series Utilizing a Piezo-Electric Bimorph to reach New Standards in Pumping Technology Applications For water supply and drainage For cooling water circulation For chemical injection For liquid sampling ・ ・ ・ ・ Piezoelectric Bimorph Outlet Valve Suction Discharge Driving power: Piezoelectric Bimorph Bending Principle/Structure Principle Frequently Asked Questions Flow adjustment methods Durability of Piezoelectric pump The durability of the pump is affected by the compatibility between the wetted material and the liquid. Please check to confirm the suitability against the specfic application/conditions. Viscosity of liquid At internal lab test, the flow rate is halved at a viscosity of 30 mPa . s. The viscosity of fluids such as lubricating oil can change considerably with temperature. By narrowing the discharge port, the discharge pressure rises and the flow rate linearly decreases. Even if the discharge port is in a closed condition, the oscillator amplitude will only decrease and not burn out like a motor driven pump. The flow rate of the piezoelectric pump can be adjusted by the following three methods. Pressure - Flow characteristics Voltage - Flow characteristics Frequency - Flow characteristics Pressure ［kPa］ voltage ［V］ Frequency ［Hz］ Flow ［ mL/min ］ Flow ［ mL/min ］ Discharge pressure ［ kPa ］ Discharge pressure ［ kPa ］ Flow ［ mL/min ］ 600 500 400 300 200 100 0 10 20 30 40 600 500 400 300 200 100 50 40 30 20 10 0 0 20 40 60 80 100 700 600 500 400 300 200 100 50 40 30 20 10 0 0 20 40 60 80 100 120 Flow Discharge pressure Flow Discharge pressure V AC ＋ 0 − The Bimorph deforms like a bowl when applied with AC voltage, positive and reverse deformation is achieved by alternating frequency from + to −. Discharge volume can be adjusted by controlling the number of amplitude of power supply. (50 Hz = 50 times / sec. 60 Hz = 60 times / sec.) ＜Bimorph vibrator ＞ The BIMOR pump’ s driving force, the bimorph, comprises two parallel piezoelectric wafers. Self-priming power : The power the pump requires to draw water. 1 kPa = the power to draw up 25℃ water 10 cm. The discharge pressure of the bimorph pump is the measurement value when the suction head is zero, so the discharge pressure = the total head. Dischage pressure : The force to pressurize the liquid. 30 kPa = the power to pressurize 25℃ water 3 m. Piezoelectric pump Total head Suction head Discharge head Piezoelectric element Elastic metal plate (Shim)* *Elastic metal plate (Shim): Where ceramic is affixed. ・ ・ Shrink Shrink Expand 1. Narrowing the discharge port or piping The flow rate and discharge pressure linearly decrease with the voltage drop. Please do not exceed the rated voltage since the thickness of the piezoelectric element is designed close to the withstand voltage. 2. Lowering the drive voltage The flow rate varies with the frequency, but the discharge pressure is constant. It is effective for changing the flow rate without being affected by discharge pressure. The maximum flow rate varies depending on model, but it occurs at about 100 to 120 Hz. 3. Varying the drive frequency BPS/BPH/BPHS/BPF type Inlet Valve *The flow characteristics of 120 V and 240 V models are equivalent. Printed in Japan 19LX00- 1 Specifications and designs are subject to change at any time without notice. DISTRIBUTED BY Head Office 9-4, Nakaikegami 2-chome, Ohta-ku, Tokyo 146-8555, Japan Tel : +81-3-3755-1111 Fax : +81-3-3753-8791 E-mail : [email protected] www.nitto-kohki.co.jp/e Web This catalog is printed using environmentally friendly paper and vegetable oil inks. ISO 9001 ISO 14001 ISO9001 JQA-2025 ISO14001 JQA-EM4057 H.Q./R&D Lab NITTO KOHKI CO., LTD.
Transcript of Utilizing a Piezo-Electric Bimorph to reach Frequently ...
-Piezoelectric Pump series -
Lk063a
Liquid Pump
BIMOR PUMP Series
Utilizing a Piezo-Electric Bimorph to reachNew Standards in Pumping TechnologyUtilizing a Piezo-Electric Bimorph to reachNew Standards in Pumping Technology
Applications
For water supply and drainageFor cooling water circulationFor chemical injectionFor liquid sampling
・・・・
Piezoelectric Bimorph
Outlet Valve
Suction Discharge
Driving power: Piezoelectric Bimorph BendingPrinciple/Structure
Principle
Frequently Asked Questions Flow adjustment methodsDurability of Piezoelectric pumpThe durability of the pump is affected by the compatibility between the wetted material and the liquid. Please check to confirm the suitability against the specfic application/conditions.
Viscosity of liquidAt internal lab test, the flow rate is halved at a viscosity of 30 mPa.s. The viscosity of fluids such as lubricating oil can change considerably with temperature.
By narrowing the discharge port, the discharge pressure rises and the flow rate linearly decreases. Even if the discharge port is in a closed condition, the oscillator amplitude will only decrease and not burn out like a motor driven pump.
The flow rate of the piezoelectric pump can be adjusted by the following three methods.
Pressure - Flow characteristics
Voltage - Flow characteristics
Frequency - Flow characteristics
Pressure［kPa］
voltage［V］
Frequency［Hz］
Flow［
mL/
min］
Flow［
mL/
min］
Dis
char
ge p
ress
ure ［
kPa ］
Dis
char
ge p
ress
ure ［
kPa ］
Flow［
mL/
min］
600
500
400
300
200
100
0 10 20 30 40
600
500
400
300
200
100
50
40
30
20
10
00 20 40 60 80 100
700
600
500
400
300
200
100
50
40
30
20
10
00 20 40 60 80 100 120
FlowDischarge pressure
FlowDischarge pressure
V AC＋
0
−
The Bimorph deforms like a bowl when applied with AC voltage, positive and reverse deformation is achieved by alternating frequency from + to −.
Discharge volume can be adjusted by controlling the number of amplitude of power supply.(50 Hz = 50 times / sec. 60 Hz = 60 times / sec.)
＜Bimorph vibrator＞ The BIMOR pump’s driving force, the bimorph, comprises two parallel piezoelectric wafers.
Self-priming power :The power the pump requires to draw water. 1 kPa = the power to draw up 25℃ water 10 cm.
The discharge pressure of the bimorph pump is the measurement value when the suction head is zero, so the discharge pressure = the total head.
Dischage pressure :The force to pressurize the liquid.30 kPa = the power to pressurize 25℃ water 3 m.
Piezoelectricpump
Tota
l hea
d
Suct
ion
head
Dis
char
ge h
ead
Piezoelectric element
Elastic metal plate (Shim)*
*Elastic metal plate (Shim): Where ceramic is affixed.
・
・Shrink
Shrink
Expand
1. Narrowing the discharge port or piping
The flow rate and discharge pressure linearly decrease with the voltage drop. Please do not exceed the rated voltage since the thickness of the piezoelectric element is designed close to the withstand voltage.
2. Lowering the drive voltage
The flow rate varies with the frequency, but the discharge pressure is constant. It is effective for changing the flow rate without being affected by discharge pressure. The maximum flow rate varies depending on model, but it occurs at about 100 to 120 Hz.
3. Varying the drive frequency
BPS/BPH/BPHS/BPF type
Inlet Valve
*The flow characteristics of 120 V and 240 V models are equivalent.
Printed in Japan 19LX00- 1Specifications and designs are subject to change at any time without notice.
DISTRIBUTED BY
Head Office9-4, Nakaikegami 2-chome, Ohta-ku, Tokyo 146-8555, JapanTel : +81-3-3755-1111 Fax : +81-3-3753-8791E-mail : [email protected]/eWeb
This catalog is printed using environmentally friendly paper and vegetable oil inks.
ISO 9001ISO 14001
ISO9001JQA-2025ISO14001JQA-EM4057H.Q./R&D Lab
NITTO KOHKI CO., LTD.
-Piezoelectric Pump series -
BPS type
BPH type
BPS-215i
BPH-214E
BPH-214G
BPH-414E
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15
15
30
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3
8
7
12
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30
350
350
500
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15
18
17
35
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7.5
7.5
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15
15
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8
7
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10
10
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350
350
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400
400
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18
17
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35
35
PP
PP
PP
PP
PPS
PPS
40
140
140
140
170
170
PP
PP
PTFE
PP
PTFE
PTFE
IIR
EPDM
FKM
EPDM
FKM
FFKM/FEP
Voltage(AC) 240 V 60 Hz
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BPH-214E
BPH-214G
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BPH-474G
BPH-474P
Material of Wetted Parts
Valve / O-ringLiquidContact SheetHousing
Weight(g)
Voltage(AC) 120 V 60 Hz
The BIMOR pump's driving force, the bimorph, comprises two parallel piezoelectric wafers. Their nature is to expand or contract depending on the direction of the voltage. Therefore when an alternating current is applied, one wafer expands then contracts while the other contracts then expands, causing the bimorph to bend. Repeating the cycle creates the pumping action.
Revolutionary piezoelectric bimorph technology
BPHS-414i/E/G
Voltage(AC) 120 V 60 Hz
Current(mA)
Self-primingPressure
(kPa)Flow Rate(mL/min)
DischargePressure
(kPa)Model Current
(mA)Self-priming
Pressure(kPa)
Flow Rate(mL/min)
DischargePressure
(kPa)Model
Material of Wetted Parts
Valve / O-ringLiquidContact SheetHousing
Weight(g)Current
(mA)Self-priming
Pressure(kPa)
Flow Rate(mL/min)
DischargePressure
(kPa)Model Current
(mA)Self-priming
Pressure(kPa)
Flow Rate(mL/min)
DischargePressure
(kPa)Model
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BPH-214i
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BPH-414D
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BPH-414G
BPH-474G
BPH-474P
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BPF-465P
BPS-215i
BPS-235G
BPH-214i
BPH-214D
BPH-414i
BPH-414D
BPH-414E
BPH-414G
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BPHS-414i
BPHS-414E
BPHS-414G
BPHS-474G
BPHS-474P
BPF-465P
Voltage(AC) 240 V 60Hz
These models are made-to-order models.Please send a request for quotation to your nearest distributor.
240V models are newly redesined.The flow rate is increased by about 160 %.
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15
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30
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30
30
30
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30
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12
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10
10
10
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10
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350
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500
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450
400
400
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400
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18
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35
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32
35
35
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35
1.8
1.8
7.5
7.5
15
15
15
15
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15
15
15
15
15
15
30
30
350
350
500
500
500
450
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700
700
700
500
500
400
3
1.5
8
8
12
12
12
10
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12
12
12
10
10
10
15
15
18
18
35
35
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32
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35
35
35
35
35
35
PP
POM
PP
PP
PP
PP
PP
PP
PPS
PPS
PP
PP
PP
PPS
PPS
PFA
40
40
130
130
140
140
140
140
170
170
160
160
160
180
180
350
PP
PTFE
PP
PP
PP
PP
PP
PTFE
PTFE
PTFE
PP
PP
PTFE
PTFE
PTFE
PTFE
IIR
FKM
IIR
VMQ
IIR
VMQ
EPDM
FKM
FKM
FFKM/FEP
IIR
EPDM
FKM
FKM
FFKM/FEP
FFKM/FEP
Examples of suitable chemical liquids Examples of unsuitable chemical liquids
Ethanol,Dilute hydrochloric acid,Sodium carbonate,Benzaldehyde,Formalin
BPS-215iBPH-214iBPH-414iBPHS-414i
BPH-214GBPH-414GBPHS-414G
BPH-474G BPHS-474G
BPH-474PBPHS-474P
BPF-465P
BPH-214EBPH-414EBPHS-414E
BPS-235G
BPH-214DBPH-414D
Ammonia water, Ethanol, Dilute hydrochloric acid, Caustic potash, Caustic soda, Methanol
Ethanol, Xylene, Silicone oil, Kerosene, Toluene, Benzene
Caustic soda, Carbon tetrachloride, Silicone oil, Trichloroethylene, Toluene, Benzene
Ammonia water, Ethanol, Sodium hypochlorite, Methanol
Ethanol, Hydrogen peroxide, Mineral oil, Sodium hypochlorite
Ethanol, Xylene, Carbon tetrachloride, Silicone oil, Trichloroethylene
Model
Ethanol, Chloroform, Glacial acetic acid, Benzene, Methyl ethyl ketone
Fluorine oil, CFC 112, CFC 113Ethanol, Aqua regia, Ozone, Carbon tetrachloride,Concentrated nitric acid, Concentrated sulfuric acid,Fuming sulfuric acid
Xylene, Mineral oil, Carbon tetrachloride,Trichloroethylene, Toluene, Benzene
Acetone, Ammonia water, Glacial acetic acid, Hydrofluoric acid, Formalin
Acetone, Ammonia water, Chlorosulfonic acid, Glacial acetic acid, Hydrofluoric acid, Formalin
Chlorosulfonic acid, Fluorine oil, CFC 112, CFC 113
Ammonia water, Hydrochloric acid, Hydrogen peroxide, Sodium hypochlorite, Nitric acid, Sulfuric acid
BPHS-474G/P
Bimorphvibrator
Elastic moldLiquid contact sheet
Check valves
[Cross section]
O-ring O-ring
When installing, make sure the outlet is at the top and the inlet is at the bottom.
BPS type
BPS type
Install the pump so that the IN / OUT display is in the correct orientation.
BPH,BPHS,BPF type
BPH, BPHS, BPF type
IN OUTe.g. :If installed on the bottom of a device, the performance may deteriorate.
Outlet
Inlet
Made to order models
Specifications
Specifications
Suitable/unsuitable chemical liquids
Depending on the direction of installation, sufficient performance may not be obtained.
AttentionHow to install Please install the pump to a flat side.
BPF type
EPDMFEPFFKMFKMIIRPFAPOMPPPPSPTFE
VMQ
Ethylene Propylene RubberFluoroethylene PropylenePerfluoroelastomer Fluorine RubberButyl RubberFluororesin (Perfluoroalkoxy)PolyacetalPolypropylenePolyphenylene Sulfide Tetrafluororesin (Polytetrafluoroethylene)Dimethyl Silicon Rubber
Ambient temperatureAmbient humidityFluid temperature
5 to 50℃ *1
35 to 85％ *2
5 to 50℃ *1) No Freezing*2) No condensation
Material Description The meaning of each letter in the model name
Condition of UseHousing material
Pump type
Diaphragm type
BP H 4 1 4 D
i : Butyl Rubber (IIR)D : Dimethyl Silicon Rubber (VMQ)E : Ethylene Propylene Rubber (EPDM)G : Fluorine Rubber (FKM)P : Perfluoroelastomer (FFKM)
1: Polypropylene (PP)2: Polyacetal (POM)6: Fluororesin (Perfluoroalkoxy) (PFA)7: Polyphenylene Sulfide (PPS)
2: Single4: Double
S : Small typeH: Dismantlable typeF : Chemical-resistant typeHS : High flow type
Pump type4: Dismantlable type5: Chemical-resistant type and small type
Rubber material (Valve, O-ring)
