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Information of Pump for the Air Heater (Blower)
The following air pumps can be used for hot air heaters (air heaters).
Air compressors are generally used, but power saving is preferable considering running cost and CO2 emission reduction. Rotary blowers and electromagnetic blowers require only 1/5 to 1/10 of the power consumption of the air compressor and should be considered when applicable. Based on consultation, Fintech can help you to select a suitable pump.
| Type |
Air pressure
100kPa ≒ 1 atm |
Running cost
Air volume obtained with 341.21BTU/hr (100 W) power |
Initial cost
Equipment cost for obtaining air volume of 26.41 gal (100 L/min). |
Suitable air heater |
| Straight open type (A type) |
Tip aperture type (B to C type) |
| Compressor |
Approximately 800 kPa |
Approximately 12 L/min |
Approximately 80,000 yen. |
◎ Usable |
◎ Usable |
| Rotary blower |
Approximately 50 kPa |
Approximately 80 L/min |
Approximately 35,000 yen. |
◎ Usable |
○ Usable in many cases |
| Electromagnetic blower linear pump |
Approximately 15 kPa |
Approximately 100 L/min |
Approximately 25,000 yen |
○ Usable in many cases |
△ Somewhat insufficient pressure |
| Ring blower |
Approximately 5 kPa |
Approximately 120 L/min |
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X Insufficient pressure (SAH)
△ CLH type can be selected depending on the conditions |
X Insufficient pressure |
Air compressor (reciprocating type, screw type, and scroll type)
Suitable for all Fintech hot air heaters.
Most factories and laboratories have piping (72.5 psi to 116.03 psi (500 to 800 kPa)) to supply air from compressors, which can be used easily, and this model can be used when small capacity air heaters are used. However, air pressure is higher than required, usability is good but running costs increase.
This is not recommended when a new air source dedicated to air heater is to be prepared. → The running cost is 5 to 10 times that of other methods. Also, equipment to remove oil and moisture (such as air dryers) is required.
Generally generates a high noise, but screw and scroll types are relatively silent.
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Example of screw compressor
MEIJI AIR COMPRESSOR MFG.CO.,LTD. MAS4PKD
116.236 gal/min (440 L/min), 123.28 psi (850 kPa) 12624.92 Btu/hr (3.7 kW), 363.763 pounds (165 Kg)
Approximately 450,000 yen.
Built-in air dryer
Noise 53dB/m"
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Rotary blower
Suitable for almost all Fintech hot air heaters.
This pump is made for large size septic tanks, can withstand continuous use, runs silently and has a long service life. Since the pressure is about 7.25psi (50 kPa), in most cases it can be used as air source for air heaters. There are many products in the range 39.62 to 79.25 gal/min (150 to 300 L/min)
The cost is approximately 100,000 yen.
Many of the models use oil, and having an oil trap is preferred. Depending on usage conditions, water droplets may be generated, so an air dryer may be necessary in some cases. Since there are cases in which the pressure increases and the pump malfunctions when adjusting the flow rate using a valve. Therefore, the air flow rate to the air heater should be adjusted by discharging the air to the atmosphere. However, if possible, the rotation speed of the motor should be controlled by using an inverter.
Recommended manufacturers
Tohin Co., Ltd http://www.tohin.co.jp
Models such as rotary blower FD type of this company
TAIKO KIKAI INDUSTRIES CO., LTD. http://www.taiko-kk.com/index.html
Models such as Roots type rotary blower TSS type, and TSA type
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Example of rotary blower
Tohin Co., Ltd FD-300
79.25 gal/min (300L/min), 5.80 psi (40 kPa), 1364.85 Btu/hr (400 W), 116.84 lbs (53 Kg)
Cost is approximately 110,000 yen.
Example of inverter for above
Fuji Electric FRN0.75C1S-6J
3 phase 200 V motor can be used with single phase 100 V
Suitable motor Up to 2559.10 Btu/hr (0.75 kW)
Size 3.14 x 4.72 x 4.72 in (80 x 120 x 120 mm) 3.30 lbs (1.5 kg)
Actual price Approx. 27,000 yen
Cost is approximately 37,000 yen for a 7506.71 Btu/hr (2.2 kW) motor.
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Reference: Inverter recommended for rotary blower is Frenic-mini from Fuji Electric
Fuji Electric Frenic-mini
http://www.fujielectric.co.jp/fcs/jpn/new/frenic-mini/index.htm
If this device is used, 3 phase AC motor with general power supply (single phase 2 wire type AC 100 V or AC 200 V power supply) can be used, and it can be run at any rotation speed. In other words, the volume of air discharge from the rotary blower can be freely controlled to any flow rate.
According to Fintech experiments, adequate control was possible from 1 to 2 Hz, the rotation at that time was also smooth and sufficient torque was generated.
The air tank attached to the rotary blower is small, pulsation of the air pressure increases if the rotational speed is decreased. In such cases, pulsation can be reduced by providing a flow control valve and reducing the air flow appropriately (pump outlet pressure increases).
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Single-phase series
| Item |
Specifications |
| Power series |
Single-phase 200V |
Single-phase 100 V (*12) |
| Format (FRN _____ C1S-____) |
FRN0.1
C1S-7J |
FRN0.2
C1S-7J |
FRN0.4
C1S-7J |
FRN0.75
C1S-7J |
FRN1.5
C1S-7J |
FRN2.2
C1S-7J |
FRN0.1
C1S-6J |
FRN0.2
C1S-6J |
FRN0.4
C1S-6J |
FRN0.75
C1S-6J |
| Standard applicable motor [kW] (*1) |
0.1 |
0.2 |
0.4 |
0.75 |
1.5 |
2.2 |
0.1 |
0.2 |
0.4 |
0.75 |
| Output rating |
Rated capacity kVA (*2) |
0.3 |
0.57 |
1.1 |
1.9 |
3.0 |
4.1 |
0.26 |
0.53 |
0.95 |
1.6 |
| Voltage V (*3) |
3-phase, 200V/50Hz, 200V, 220V, 230V/60Hz |
| Rated Current [A] (*4) |
0.8
(0.7) |
1.5
(1.4) |
3.0
(2.5) |
5.0
(4.2) |
8.0
(7.0) |
11.0
(10.0) |
0.7 |
1.4 |
2.5 |
4.2 |
| Overload current rating |
150% -1 min, 200% - 0.5 s of rated output current |
| Rated frequency Hz |
50/60 Hz |
| Input power supply |
Number of phases, voltage, and frequency |
Single-phase, 200 V to 240 V, 50Hz/60Hz |
Single-phase, 100 V to 120 V, 50Hz/60Hz |
| Voltage and frequency tolerance variation |
Voltage: +10 to -10% Frequency: +5 to -5% |
| Instantaneous voltage drop toleration amount (* 5) |
Continue to run above 165 V. If the voltage drops from the rated input state to less than 165 V, continue operation for 15 ms. |
Continue to run above 85 V. If the voltage drops from the rated input state to less than 85 V, continue operation for 15 ms. |
| Rated input current A (* 6) |
(With DCR) |
1.1 |
2.0 |
3.5 |
6.4 |
11.6 |
17.5 |
2.2 |
3.8 |
6.4 |
12.0 |
| (Without DCR) |
1.8 |
3.3 |
5.4 |
9.7 |
16.4 |
24.8 |
3.6 |
5.9 |
9.5 |
16.1 |
| Required rated capacity kVA (*7) |
0.3 |
0.4 |
0.7 |
1.3 |
2.4 |
3.5 |
0.3 |
0.5 |
0.7 |
1.3 |
| Braking |
Braking torque % (* 8) |
150 |
100 |
50 |
30 |
150 |
100 |
| Braking torque % (* 9) |
- |
150 |
- |
150 |
| DC braking |
Braking start frequency: 0.0 to 60.0 Hz, braking time: 0.0 to 30.0 s, braking operation level: 0 to 100% |
| Protective structure (IEC60529) |
IP 20 closed type, UL open type (* 11) |
IP20 |
| Cooling method |
Self-cooling |
Fan cooled |
Self-cooling |
| Mass Kg |
0.6 |
0.6 |
0.6 |
0.8 |
1.7 |
2.3 |
0.6 |
0.6 |
0.7 |
1.2 |
(*1) The standard applicable motor shown is when the Fuji Electric 4-pole standard motor is used.
(*2) Rated capacity is calculated with output rated voltage of 440 V in case of three phase 200 V, single phase 200 V, single phase 100 V series 220 V, three phase 400 V series.
(*3) The output voltage cannot be higher than the power supply voltage.
(*4) When the carrier frequency setting is 4 kHz or more (F26 = 4 to 15) or when the ambient temperature exceeds 104ºF (40ºC), use with the current value given in brackets ().
(*5) The tests are conducted with standard load conditions (load equivalent to 85% at standard applied electric motor) set by the JEMA committee.
(*6) This value is calculated based on the conditions set by Fintech.
(*7) Indicates the value when DC reactor (DCR) (optional) is used.
(*8) This is the numerical value of the average braking torque when the AVR control is OFF with only the motor. (Varies depending on the efficiency of the motor.)
(*9) This is the numerical value of the average braking torque when an external braking resistor (optional (standard type)) is used.
(*10) When phase unbalance rate [%] = maximum voltage [V] - minimum voltage [V]/3 phase average voltage [V] x 67 (in accordance with IEC 61800-3 (5.2.3)) 2 to 3%, use the AC reactor (ACR).
(*11) NEMA 1 kit (option) is required for TYPE1 (NEMA1) of UL standard.
Further, please use the ambient temperature in the range 14ºF (-10ºC) to 104ºF (40ºC).
(*12) With single phase 100 V, the following are the limitations on the shaft output and maximum torque with 100 V power supply voltage.
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Brake horsepower (%) |
Maximum torque (%) |
| Without DC reactor (DCR) |
90 |
150 |
| With DC reactor (DCR) |
85 |
120 |
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